JP7411201B2 - Pushing device and pumping system - Google Patents

Description

The present invention relates to a pushing device for pushing a fluid, and a pumping system equipped with the pushing device.

BACKGROUND ART Conventionally, a pump such as a uniaxial eccentric screw pump disclosed in Patent Document 1 below has been suitably used, for example, in a pumping system for pumping a fluid. The uniaxial eccentric screw pump can suppress pulsation to a minimum and pump the fluid at a desired discharge rate, even if the fluid has characteristics such as high viscosity that are difficult to pump with other pumps.

Japanese Patent Application Publication No. 2016-142188

However, even if a high-performance pump such as the above-mentioned single-shaft eccentric screw pump is used, if the fluid is difficult to suck in with the pump's self-priming power alone, there is a risk of poor pumping. be. In order to suppress such problems, it is desirable to provide a pushing device that can push the fluid toward the pump. In addition to the above-mentioned pressure feeding system, when handling fluids that are difficult to move smoothly due to their high viscosity, it is easier to handle the fluids if there is a pushing device that can push the fluids. .

Therefore, an object of the present invention is to provide a pushing device that can smoothly push a fluid, and a pressure feeding system equipped with the pushing device.

The pushing device of the present invention provided to solve the above-mentioned problems has a hopper that accommodates a fluid and a rotating shaft, and rotates around the rotating shaft within the hopper to thereby close the bottom of the hopper. A rotary member capable of pushing the fluid toward a take-out portion provided on a side, and a drive device having an output shaft and rotationally driving the rotary member, the drive device comprising: The pushing device is arranged below or to the side of the hopper, and the rotating shaft is directly or indirectly connected to the output shaft.

In the pushing device of the present invention, a take-out portion is provided on the bottom side of the hopper. Further, the pushing device of the present invention includes a rotating member that rotates around a rotating shaft within the hopper, and is capable of pushing the fluid introduced into the hopper toward the extraction section. Therefore, in the pushing device of the present invention, in addition to the influence of gravity acting on the fluid, the pushing effect of the rotating member allows the fluid to be smoothly pushed toward the removal section.

Furthermore, in the pushing device of the present invention, the rotating shaft is directly or indirectly connected to the output shaft of the drive device. Therefore, even if the fluid introduced into the hopper is, for example, highly viscous, the rotating member can be driven to rotate and a pushing force can be applied to the fluid.

In the pushing device of the present invention, the drive device is disposed below or to the side of the hopper, and the drive device does not get in the way when introducing the fluid into the hopper. Therefore, the pushing device of the present invention can easily perform the operation of introducing the fluid into the hopper. Further, in the pushing device of the present invention, the driving device is provided below or to the side of the hopper, and there is no driving device above the hopper. Therefore, according to the pushing device of the present invention, it is possible to minimize the possibility that foreign matter will enter the fluid in the hopper from the drive machine. Further, in the pushing device of the present invention, the center of gravity of the pushing device is lower than that in the case where the driving device is provided above the hopper. Therefore, the pushing device of the present invention has high stability in the installed state. Therefore, according to the present invention, it is possible to provide a pushing device that facilitates the work of introducing the fluid into the hopper and that can operate in a stable installation state even during the pushing operation.

In the above-described pushing device of the present invention, it is further preferable that the hopper is detachably connected to the drive device.

According to this configuration, the hopper and the drive device can be disassembled as appropriate. Therefore, the pushing device of the present invention is highly convenient because maintenance such as cleaning and repair of the hopper can be performed by removing the hopper from the drive device.

In addition, in this specification, the phrase "connected to..." includes the case where one structure (for example, a drive device) is directly connected to another structure (for example, a hopper). In addition to this, cases where the connection is made indirectly with other members interposed are also included.

It is further preferable that the above-mentioned pushing device of the present invention has a support that is non-rotatably erected in the hopper, and that the rotating shaft is rotatably inserted into the support.

According to this configuration, exposure of the rotating shaft within the hopper can be suppressed, contributing to, for example, improving the safety of the pushing device. In addition, if the rotating shaft is exposed in the hopper and the rotating shaft comes into contact with the fluid, it is necessary to provide a shaft seal, but with the above configuration, it is possible to prevent contact with the fluid. By arranging the rotating shaft (by not allowing the rotating shaft to come into contact with liquid), it is possible to omit providing a shaft seal (rotating part seal).

It is further preferable that the above-mentioned pushing device of the present invention has a connecting member that connects the support column to the rotating shaft in a detachable manner.

According to this configuration, the support column and the rotating shaft can be disassembled as appropriate. Therefore, the pushing device of the present invention is highly convenient because maintenance such as cleaning and repair can be performed separately for the support column and the rotating shaft, for example.

The pushing device of the present invention described above preferably further includes a connecting member that connects the support column to the hopper in a detachable manner.

According to this configuration, the support column and the hopper can be disassembled as appropriate. Therefore, the pushing device of the present invention is highly convenient because maintenance such as cleaning and repair can be performed separately for the column and the hopper, for example.

In the above-described pushing device of the present invention, it is further preferable that a cover for closing an end of the support column is connected to the tip end side of the rotating shaft.

According to this configuration, it is possible to suppress foreign matter such as fluid from entering the inner side of the support from the end of the support.

In the above-mentioned pushing device of the present invention, the rotating member closes the end of the support column, and includes a cover connected to a distal end side of the rotating shaft, and a revolving body that rotates with rotation of the rotating shaft. It is further preferable that the revolving body is attached to the cover.

According to this configuration, it is possible to suppress foreign matter such as fluid from entering the inner side of the column from the end of the column with a compact configuration.

In the above-described pushing device of the present invention, if the rotating member includes a rotating body that rotates with the rotation of the rotating shaft, and is provided with a swing suppressing part that suppresses shake of the rotating body, Even better.

According to such a configuration, it is possible to suppress the swinging of the rotating body, and to prevent, for example, the rotating body from coming into contact with the support column, the inner wall of the hopper, etc., causing wear on various parts, and preventing the rotating body from rotating smoothly. .

The pushing device of the present invention described above is even better if the vibration suppressing portion is provided near the bottom of the hopper.

According to this configuration, it is possible to efficiently suppress vibration of the rotating member.

It is preferable that the above-mentioned pushing device of the present invention has a column that is non-rotatably erected in the hopper, and that the vibration suppressing part is a sleeve that is fitted into the column.

According to this configuration, it is possible to suppress vibration of the rotating member without requiring a complicated structure.

The pushing device of the present invention described above is preferably provided with a residual liquid reducing section that fills a space below the take-out section at the bottom of the hopper.

According to this configuration, it is possible to reduce the amount of fluid (residual liquid) remaining at the bottom of the hopper.

The pushing device of the present invention described above is provided with a residual liquid reducing part that fills a space below the extracting part at the bottom of the hopper, and the sleeve functions as the residual liquid reducing part. It may be.

According to this configuration, it is possible to suppress vibration of the rotating member and reduce residual liquid at the bottom of the hopper while suppressing an increase in the number of parts.

The pushing device of the present invention described above preferably includes a base on which the hopper is installed, the drive device is installed at a lower part of the base, and the base preferably has a drain discharge part.

According to this configuration, water and fluid can be efficiently discharged, and damage to the drive device due to intrusion of water and fluid can be suppressed.

It is preferable that the above-mentioned pushing device of the present invention has a support that is non-rotatably erected in the hopper, and that the support is extended to near the upper end of the hopper.

According to this configuration, it is possible to prevent fluid from entering between the support column and the rotating shaft.

The pressure feeding system of the present invention is characterized in that it has one of the above-mentioned pushing devices and a pressure feeding device capable of pumping a fluid, and the pressure feeding device is connected to the extraction section. .

The pressure-feeding system of the present invention can force-feed the fluid with the pressure-feeding device while smoothly pushing the fluid toward the take-out portion with the pushing device.

In the pumping system of the present invention, the pumping device has a pump casing, a cylindrical inner peripheral surface formed in a female thread shape, a first end and a second end, and the first end It is preferable that the pump is a uniaxial eccentric screw pump including a stator connected to the pump casing, and a rotor formed in a male thread shape and inserted into the stator.

According to this configuration, it is possible to provide a pumping system that can transfer fluids with high quantitative performance and stability.

In the pumping system of the present invention, it is further preferable that the stator is directly or indirectly connected to the take-out part at the second end.

According to this configuration, it is possible to provide a pumping system that can transfer fluids with high quantitative performance and stability.

Moreover, according to the above-mentioned structure, a long joint such as a flexible rod can be used in the pumping device without worrying about a decrease in the suction force of the fluid.

To explain in more detail, if the casing side (first end side) of the stator is connected to the extraction part and the fluid is sucked in from the opening on the casing side, the suction port (provided on the casing side) (the distance from the suction port to the pump section becomes longer). Therefore, if the opening (first end) on the casing side is connected to the extraction part, and if a long joint such as a flexible rod is used in the pressure feeding device, the casing will have to be long, and the suction The distance from the mouth to the pump section increases. As a result, there is a concern that the pushing force for the fluid is insufficient and the fluid cannot be smoothly sucked into the pump section.

On the other hand, as in the above configuration, by connecting the second end side (end stud side) of the stator to the ejection part and connecting the pressure feeding device and the pushing device (the end stud side is connected to the pressure feeding device (by connecting to the outlet of the pump), the distance from the suction port to the pump section (rotor/stator) can be shortened. In other words, according to the above-mentioned configuration, the part that serves as the starting point from which the fluid is pushed from the pushing device into the pressure-feeding device (the take-out portion) and the portion of the pressure-feeding device where the force for pumping the fluid acts (the end of the stator) This means that they are connected without going through the casing. Thereby, the fluid can be efficiently fed from the pushing device to the pumping device regardless of the length of the casing (the distance in the axial direction inside the casing). As a result, there is an advantage that a long joint such as a flexible rod can be used in the pumping device. In addition, flexible rods are more sanitary than pin joints, etc., and are easier to clean, as well as having less risk of joint wear. Therefore, if a flexible rod is employed in the pressure feeding device, the maintainability of the pressure feeding device can be improved.

According to the present invention, it is possible to provide a pushing device that can smoothly push a fluid, and a pressure feeding system equipped with the pushing device.

FIG. 1 is a side view showing a pushing device and a pressure feeding system including the pushing device according to an embodiment of the present invention. 2 is a cross-sectional view of the pumping system of FIG. 1; FIG. FIG. 2 is a sectional view showing the pushing device of FIG. 1; FIG. 2 is a cross-sectional view showing the pushing device of FIG. 1 in an exploded state. FIG. 2 is an exploded perspective view showing a rotating member, a column, and a sleeve of the pushing device of FIG. 1. FIG. FIG. 2 is a sectional view showing a cover of the pushing device of FIG. 1; FIG. 2 is a sectional view showing the vicinity of the bottom and the sleeve of the pushing device in FIG. 1; FIG. 2 is a sectional view showing a position where a drain discharge part of the pushing device of FIG. 1 is provided. FIG. 2 is a sectional view showing a pumping device of the pumping system of FIG. 1; A modification of the pushing device of FIG. 1 is shown. (a) shows a first modification, and (b) shows a second modification. 3 shows a third modification of the pushing device of FIG. 1; A modification of the pushing device of FIG. 1 is shown. (a) shows a fourth modification, (b) shows a fifth modification, (c) shows a sixth modification, and (d) shows a seventh modification. A modification of the pushing device of FIG. 1 is shown. (a) shows the eighth modification, and (b) shows the ninth modification. In the pumping system of FIG. 1, the second opening of the pumping device is shown connected to the extraction section. (a) is a schematic diagram when viewed from the right side, and (b) is a schematic diagram when viewed from above. FIG. 2 is a reference diagram for explaining the operation when attaching and detaching the pushing device and the pumping device of the pumping system shown in FIG. 1;

Hereinafter, a pressure feeding system S according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a pushing device 10 and a pressure feeding system S including the pushing device 10 according to an embodiment of the present invention. The pumping system S is used for transporting fluids.

As shown in FIGS. 1 and 2, the pressure feeding system S includes a pushing device 10 and a pressure feeding device 60. The pumping system S pushes the fluid that is difficult to suck in only by the self-suction force of the pumping device 60 toward the suction port of the pumping device 60 by operating the pushing device 10, thereby assisting the transfer of the fluid to the pumping device 60. be able to.

The fluid to be transferred by the pumping system S of this embodiment is, for example, a paste-like or cream-like food material, a cosmetic material, a high-viscosity liquid such as a sealant, and the like. Note that the fluid to be transferred by the pumping system S of the present invention is not limited to high viscosity liquid. The pressure feeding system S of the present invention may transfer a low viscosity liquid.

As shown in FIG. 2, the pushing device 10 can push a fluid downward from above in the installed state (see pushing direction X in FIG. 2). In addition, in the following description, the up-down direction in the state where the pushing device 10 is installed may be simply described as "up-down direction H." Further, the lower part of the state in which the pushing device 10 is installed may be simply referred to as "lower h1", and the upper part may be simply referred to as "upper h2".

The pushing device 10 is provided to assist in supplying the fluid to the pumping device 60. As shown in FIG. 2, the pushing device 10 includes a drive device 12, a base 14, a hopper 20, a rotating member 30, a support column 50, and a sleeve 54 (shake suppressing section, residual liquid reducing section). Further, as shown in FIG. 2, the pushing device 10 is provided with a plurality of (two in this embodiment) connecting members 58 and a controller 80 for connecting the hopper 20, the support column 50, and the like.

The drive device 12 is for rotating the rotating member 30. As shown in FIG. 2, in this embodiment, the drive device 12 is arranged below the hopper 20 h1. Further, as shown in FIG. 3, the drive device 12 has an output shaft 13. As shown in FIG. 3, a shaft 32 (rotating shaft), which will be described later, is connected to the output shaft 13. Moreover, in the pushing device 10 of this embodiment, the hopper 20 is detachably connected to the drive device 12. In addition, in this embodiment, the output shaft 13 (non-hollow shaft body) made into a rod-shaped shaft body was shown as an example, but the output shaft of the pushing device of the present invention is not limited to this embodiment, and is a hollow shaft body. It may be a shaft body (hollow shaft). Further, when the output shaft is a hollow shaft, the shaft (rotating shaft) may be housed in the hollow shaft and connected integrally therewith.

In addition, although the pushing device 10 of this embodiment will be described with reference to an example in which the drive device 12 is arranged below h1 of the hopper 20, the pushing device of the present invention is not limited to this embodiment. For example, in the pushing device of the present invention, the drive device 12 may be arranged on the side of the hopper 20 (see FIG. 10).

The base 14 is a box-shaped member that covers the drive device 12. As shown in FIG. 2, a hopper 20 is installed above the base 14 h2. As shown in FIG. 8, the base 14 is provided with a drain discharge section 15. The drain discharge part 15 is provided as a through hole for discharging water and the like from the upper h2 side of the base 14 toward the lower h1 side. Further, as shown in FIG. 8, the base 14 is provided with a shaft insertion hole 14a through which a shaft 32, which will be described later, is inserted.

As shown in FIGS. 2 and 8, the base 14 is arranged to cover the drive device 12. In other words, the drive device 12 is installed at the bottom of the base 14. To explain in more detail, the drive device 12 is attached to the inside of the base 14 via a fastening member (not shown) such as a bolt.

The hopper 20 is provided as a storage tank for storing fluid. As shown in FIG. 3, the upper end 20b of the hopper 20 is formed with a supply opening 23 that serves as a fluid receiving port. The hopper 20 can be supplied with fluid through a supply opening 23 . At the bottom of the hopper 20, a shaft insertion hole 28 is provided that penetrates in the axial direction. Further, the hopper 20 is provided with a take-out portion 26 at a position removed from the shaft insertion hole 28.

As shown in FIG. 3, the hopper 20 is formed with a tapered portion 22 having a tapered shape whose outer diameter decreases from the middle portion toward the bottom portion 24. Further, the bottom portion 24 of the hopper 20 has a short cylindrical shape. That is, the hopper 20 is formed with an internal space 21 that decreases in the radial direction from the supply opening 23 on the upper h2 side toward the bottom 24 on the lower h1 side.

As shown in FIG. 3, a take-out portion 26 for discharging the fluid from the inside of the hopper 20 is provided near the bottom portion 24 of the hopper 20. More specifically, the take-out portion 26 is formed on the lower h1 side of the tapered portion 22 and at a position closer to the upper h2 of the bottom portion 24. That is, the take-out portion 26 is formed near the bottom portion 24 on the side of the hopper 20 . A stator 64, which will be described later, is connected to the take-out portion 26. The take-out part 26 opens toward the outer side of the hopper 20, and can be directly or indirectly connected to a first opening 71 of a pressure feeding device 60, which will be described later.

In this way, the lower h1 of the hopper 20 is provided with a shaft insertion hole 28 through which the shaft 32 is inserted in the axial direction, and a take-out portion 26 which penetrates laterally. In other words, in the pushing device 10, the shaft 32 is inserted from the lower h1 side of the hopper 20, and the fluid is discharged toward the side of the hopper 20.

The rotating member 30 rotates around a shaft 32 (rotating shaft) within the hopper 20, and is capable of pushing the fluid toward a take-out portion 26 provided on the bottom 24 side of the hopper 20.

As shown in FIG. 3, the rotating member 30 includes a shaft 32 (rotating shaft), a cover 34a, and a rotating body 36. In the pushing device 10 of this embodiment, the rotating member 30 is an assembly of a plurality of members. In addition, as shown in FIG. 3 etc., the cover 34a is provided on the coupling body 34. As shown in FIG. 3, the connecting body 34 includes a cover 34a and a connecting portion 34b.

In the rotating member 30, rotational power is transmitted from the output shaft 13 of the drive device 12 to the shaft 32, and members such as the connecting body 34 and the rotating body 36 can rotate integrally around the shaft 32.

Further, as shown in FIG. 4, the rotating member 30 is capable of connecting and separating the coupling body 34 and the rotating body 36 to and from the shaft 32. More specifically, as shown in FIG. 6, in the rotating member 30, a connecting body 34 is connected to a shaft 32 via a mounting member 35. Further, as shown in FIG. 3, a screw portion 38 is attached to the connecting body 34 via a screw arm 37. Therefore, in the rotating member 30, the connecting body 34 and the rotating body 36 can be separated from the shaft 32 by removing the attachment member 35.

The shaft 32 (rotating shaft) is a shaft body for rotating the rotating body 36 (screw part 38, scraping part 42, etc.). The shaft 32 is connected to the output shaft 13 and is rotatably arranged within the hopper 20 . As shown in FIG. 3, the shaft 32 of the pushing device 10 of this embodiment is connected to the output shaft 13 at the end (base end 32a) on the lower h1 side. Therefore, the shaft 32 rotates as the power of the drive device 12 is transmitted from the lower h1 side.

In other words, the lower h1 side of the shaft 32 is connected to the drive device 12 which is a drive source. In the following description, the end of the shaft 32 on the drive device 12 side (lower h1 side) will be simply referred to as the "base end 32a", and the end on the upper h2 side will be simply referred to as the "tip 32b". There is.

As shown in FIG. 3, the shaft 32 is erected within the internal space 21 of the hopper 20. Further, the shaft 32 is installed so as to extend vertically in the vertical direction H in the internal space 21 of the hopper 20, and has a length such that its tip 32b reaches near the upper end 20b of the hopper 20.

Although the pushing device 10 of the present embodiment shows an example in which the shaft 32 is arranged in series and directly connected to the output shaft 13, the pushing device of the present invention is not limited to this. Not done. That is, the shaft (rotary shaft) of the pushing device of the present invention can be connected directly or indirectly to the output shaft. Further, the shaft of the pushing device of the present invention may be arranged in parallel to the output shaft as described later (see FIG. 10).

As shown in FIG. 3, the connecting body 34 is attached to the tip 32b of the shaft 32. The connecting body 34 includes a cover 34a and a connecting portion 34b, and is a member in which these are integrated. The cover 34a closes the end of the support column 50 on the upper h2 side on the tip 32b side (upper h2 side). In other words, the cover 34a functions as a lid material that closes off the internal space of the support column 50. Further, the connecting portion 34b functions as a member that connects the rotating body 36 to the shaft 32.

To explain in more detail, as shown in FIGS. 3 and 6, the connecting portion 34b of the connecting body 34 is attached to the tip 32b of the shaft 32 by an attachment member 35, and the rotating body 36 is attached to the connecting portion 34b. is installed. Therefore, the connecting body 34 rotates integrally with the rotation of the shaft 32 (rotating shaft). To explain from another point of view, in the pushing device 10, the revolving body 36 is attached to the cover 34a. The revolving body 36 may be attached directly or indirectly to the cover 34a. In the pushing device 10 of this embodiment, the revolving body 36 is attached to the cover 34a via the connecting portion 34b. Therefore, the cover 34a, the connecting portion 34b, and the rotating body 36 rotate integrally as the shaft 32 rotates. Further, as shown in FIGS. 3 and 56, the upper h2 side end of the support column 50 is fitted into the cover 34a. Thereby, the cover 34a functions as a cover material for the support column 50. In this embodiment, the connecting body 34 in which the cover 34a and the connecting portion 34b are integrated is shown as an example, but the pushing device of the present invention is not limited to this embodiment. Specifically, in the pushing device of the present invention, the cover and the connecting portion may be provided as separate bodies, and these may be detachable.

The rotating body 36 is a member having a screw portion 38, a scraping portion 42, and the like. As shown in FIG. 3, the revolving body 36 includes a screw arm 37 for connecting the screw part 38 to the connecting body 34, and a scraping part connecting arm 43 for connecting the scraping part 42 to the screw arm 37. , a ring member 40 connecting the plurality of screw arms 37 is provided. Rotational power is transmitted from the shaft 32 to the rotating body 36 via the connecting body 34, and the rotating body 36 is rotatable in the internal space 21 of the hopper 20.

The screw arm 37 is provided to support the screw portion 38 within the internal space 21 of the hopper 20. As shown in FIGS. 3, 5, etc., the rotating member 30 of this embodiment is provided with a plurality of (two in this embodiment) screw arms 37 that are rod-shaped members. As shown in FIG. 4, a screw portion 38 is attached to the screw arm 37. The screw arm 37 is arranged radially outward of the shaft 32 in a state where the rotating member 30 is arranged in the internal space 21 of the hopper 20 .

As shown in FIG. 5, the screw arm 37 has an end on the upper h2 side attached to the connecting body 34 (connection part 34b), and an annular ring member 40 is attached to the end on the lower h1 side. That is, the two screw arms 37 are connected via the connecting body 34 (connecting portion 34b) on the upper h2 side, and are connected via the ring member 40 on the lower h1 side. Further, as shown in FIG. 3, the screw arm 37 has a length that reaches the sleeve 54, and is arranged so that the ring member 40 attached to the end on the lower h1 side contacts the sleeve 54. .

The screw portion 38 is provided as a member (pushing member) that forms a flow of the fluid so as to push the fluid toward the removal portion 26 . As shown in FIG. 3, the screw portion 38 is a wing-shaped member spirally formed around the axis L1 of the shaft 32. As shown in FIG. The screw portion 38 is disposed at an intermediate portion of the rotating member 30, and is located toward the bottom from the intermediate portion of the internal space 21 of the hopper 20. Therefore, when the drive device 12 is operated to rotate the shaft 32, the screw portion 38 rotates within the hopper 20. Although the screw portion of this embodiment has a spiral shape as an example, the pushing device of the present invention is not limited to this, and a plurality of blade-like members may be arranged to form a screw. etc., can be selected as appropriate.

The screw portion 38 can push the fluid from the upper h2 toward the lower h1 by rotating in a predetermined direction (for example, the positive direction) around the axis L1 of the shaft 32 as the shaft 32 rotates (see FIG. (see 2). Therefore, in the pressure-feeding system S, the fluid stored in the hopper 20 can be efficiently supplied from the take-out portion 26 to the pressure-feeding device 60 by the action of the screw portion 38 .

The scraping section 42 is provided to scrape off fluid adhering to the inner wall surface 20a of the hopper 20. As shown in FIG. 4, the scraping part 42 is connected to the screw arm 37 via a scraping part connecting arm 43. Therefore, the scraping part 42 rotates around the axis L1 together with the screw part 38 as the shaft 32 rotates. In addition, although the pushing device 10 of this embodiment showed the example which provided the scraping part 42, the pushing device of this invention may not be provided with the scraping part.

As shown in FIGS. 4 and 5, the support column 50 is a hollow cylindrical member having a brim-shaped seat portion 52 formed at one end. The seat portion 52 is a short cylindrical (disc-shaped) portion provided at the end of the support column 50 on the lower h1 side. As shown in FIG. 3, the support column 50 extends to the vicinity of the upper end (upper end 20b) of the hopper 20 on the h2 side.

The support column 50 is erected in the hopper 20 in a non-rotatable manner. More specifically, the support column 50 is connected to the hopper 20 by a first clamp member 58a (connection member 58), which will be described later, and is attached to the hopper 20 so as not to rotate. A shaft 32 is rotatably inserted inside the support column 50.

As shown in FIG. 3, the support column 50 has a height that reaches near the upper end 20b in the internal space 21 of the hopper 20, and is closed by the cover 34a. Therefore, the pushing device 10 can prevent the fluid in the hopper 20 from entering the inside of the support column 50.

As shown in FIG. 5 and the like, the sleeve 54 (the vibration suppressing section 56 and the residual liquid reducing section 55) is an annular member having a predetermined thickness. As shown in FIG. 3, the sleeve 54 is fitted into the support column 50 and placed in the internal space 21 of the hopper 20. More specifically, the sleeve 54 is attached to the support column 50 and is disposed near the bottom 24 of the internal space 21 of the hopper 20 .

As shown in FIG. 5, the sleeve 54 of this embodiment is an annular member having two portions with different diameters, and a step is formed. More specifically, the sleeve 54 is formed with a first component 54a (residual liquid reducing portion 55) and a second component 54b (runout suppressing portion 56) having a smaller diameter than the first component 54a. A step is formed between the first component 54a and the second component 54b.

The sleeve 54 of this embodiment functions as a shake suppressing part 56 that suppresses shake caused by the rotation of the rotating member 30 (a shake suppressing function), and fills the internal space 21 of the bottom 24 of the hopper 20 to suppress the shake caused by the rotation of the rotating member 30. It has two functions: a function as a residual liquid reducing section 55 (residual liquid reducing function) that reduces the fluid (residual liquid) remaining in the liquid. Further, the sleeve 54 contacts the ring member 40 of the rotating body 36 to position the rotating body 36 laterally.

The function of the sleeve 54 as the deflection suppressing portion 56 will be explained in more detail. The sleeve 54 is disposed near the base end 32a of the shaft 32 while being attached to the support column 50 and disposed in the internal space 21 of the hopper 20. Further, when the rotating body 36 (rotating member 30) is disposed in the internal space 21 of the hopper 20, the ring member 40 is fitted into the second component 54b (swing suppressing portion 56). Therefore, the rotating member 30 rotates while the ring member 40 is guided by the outer peripheral surface of the second component 54b on the lower h1 side (the base side of the shaft 32). That is, the revolving body 36 (rotating member 30) rotates while the ring member 40 contacts the outer circumferential surface of the second component 54b on the lower h1 side, and movement in the radial direction is restricted. Thereby, the pushing device 10 can suppress vibration when the screw portion 38 and the like rotate around the shaft 32.

Next, the function of the sleeve 54 as the residual liquid reducing section 55 will be specifically explained. The sleeve 54 can fill the space below the take-out part 26 in the bottom part 24 of the hopper 20, thereby reducing the amount of liquid remaining in the bottom part 24 of the hopper 20. To explain in more detail, as shown in FIG. 7, when the sleeve 54 is attached to the support column 50 and arranged in the internal space 21 of the hopper 20, the first component 54a (residual liquid reducing part 55) is attached to the hopper 20. It is arranged so as to fill the internal space 21 of the bottom part 24 of. In other words, the second component 54b of the sleeve 54 is disposed on the bottom 24 of the hopper 20, raising the bottom of the hopper 20 so as to approach the position where the take-out portion 26 is provided. Thereby, the pushing device 10 can smoothly guide the fluid in the lower part of the hopper 20 toward the take-out part 26, and can reduce the fluid (residual liquid) staying in the vicinity of the bottom 24.

The connecting member 58 is provided to connect the members constituting the pushing device 10. The connection and separation of each component in the pushing device 10 of this embodiment will be explained in more detail. Due to the separation structure in the pushing device 10, the drive device 12, the base 14, and the shaft 32 will be temporarily referred to as "base side members". In the pushing device 10 of this embodiment, the hopper is 20, the support column 50, and the rotating body 36 (rotating member 30) can be separated.

When separating the rotating body 36 from the shaft 32 (base side member), it can be done by removing the attachment member 35, as described in detail above.

Further, as shown in FIGS. 2 and 4, the connecting member 58 of the pushing device 10 of this embodiment is provided as a clamping member that clamps a flange-shaped portion formed in each structure. Specifically, the pushing device 10 includes a first clamp member 58a (connection member) that removably connects the strut 50 and the hopper 20, and a second clamp member 58b (connection member) that removably connects the strut 50 and the base 14. A connecting member) is provided.

Note that the connecting member 58 of the pushing device 10 of the present invention is not limited to this embodiment. That is, in the pushing device of the present invention, one connecting member may be used as a dual-purpose connecting member that connects a plurality of structures (for example, a member that connects a hopper, a column, and a base), or it may be a separate connecting member. In addition, in the pushing device 10 according to the present embodiment, the column 50 and the hopper 20 can be attached and detached by the first clamp member 58a (connection member 58), and the column 50 and the base 14 can be attached and detached by the second clamp member 58b (connection member 58). Although an example has been shown in which it can be used in various ways, the pushing device of the present invention is not limited to this embodiment. For example, the pushing device of the present invention may be one in which the support and the hopper are integrated (which cannot be separated), or the support and the base may be integrated.

Next, the pressure feeding device 60 will be explained. The pumping device 60 is capable of pumping a fluid. Further, the pressure feeding device 60 is connected to the take-out section 26 .

The pumping device 60 of this embodiment employs a positive displacement rotary pump and a uniaxial eccentric screw pump. As shown in FIG. 2, the pressure feeding device 60 of this embodiment is arranged on the side of the pushing device 10 and near the bottom 24 in the entire pressure feeding system S. Moreover, in the pressure feeding system S of this embodiment, the pressure feeding device 60 is used in a posture in which the longitudinal direction is oriented horizontally.

As shown in FIGS. 2 and 9, the pumping device 60 includes a pump casing 62, a stator 64, a rotor 68, a power transmission section 74, and a drive section 78.

As shown in FIG. 9, of both ends of the stator 64 in the longitudinal direction, a first end 66a (first end) on the pump casing 62 side is connected to the pump casing 62. Further, an end stud 70 is provided at a second end 66b (second end) of the stator 64 opposite to the first end 66a.

As shown in FIG. 9, the pressure feeding device 60 is provided with two openings that function as a suction port and a discharge port for the fluid. Specifically, in the pumping device 60, a first opening 71 is formed in the end stud 70, and a second opening 72 is formed in the middle part of the pump casing 62.

The pressure feeding device 60 allows the first opening 71 to function as a suction port, and can transport the fluid at a predetermined flow rate. Further, the pressure feeding device 60 can cause the second opening 72 to function as a discharge port. Note that a transfer pipe (not shown) is connected to the second opening 72, and the fluid can be transferred to another container or the like via the transfer pipe.

By rotating the rotor 68 in the forward direction, the pressure feeding device 60 can cause the first opening 71 to function as a suction port and the second opening 72 to function as a discharge port. Further, by rotating the rotor 68 in the opposite direction, the pumping device 60 can suck the fluid from the second opening 72 and discharge the sucked fluid from the first opening 71.

The stator 64 is a member that is made of an elastic material such as rubber or resin, and has a substantially cylindrical external shape. The material of the stator 64 is appropriately selected according to the type and properties of the fluid to be transferred by the pressure feeding device 60. As shown in FIG. 9, an insertion hole 65 is formed in the stator 64, and an inner circumferential surface 64a has n-threaded female threads in a single-stage or multi-stage shape. In this embodiment, as shown in FIG. 9, the stator 64 is formed with an insertion hole 65 having a two-thread, multistage female thread shape.

In the pumping device 60 of this embodiment, the second end 66b of the stator 64 is connected to the take-out portion 26 via an end stud 70.

Note that, in the pressure feeding system S of the present invention, the second end portion 66b of the stator 64 is connected to the take-out portion 26 of the pushing device 10 via some member such as the end stud 70, as in the present embodiment. Alternatively, the stator 64 may be directly connected to the take-out portion 26 without using the end stud 70 or the like. That is, in the pumping system of the present invention, the second end of the stator can be directly or indirectly connected to the extraction section.

As shown in FIG. 9, the rotor 68 is a metal shaft body, and has a single-stage or multi-stage male screw shape with n-1 threads. In this embodiment, the rotor 68 has a single thread with an eccentric male thread. The rotor 68 has a substantially perfect circular cross-sectional shape at any position in the longitudinal direction. The rotor 68 is inserted into the insertion hole 65 formed in the stator 64 described above, and can freely eccentrically rotate inside the insertion hole 65.

As shown in FIG. 9, when the rotor 68 is inserted into the stator 64, the outer circumferential surface 68a of the rotor 68 and the inner circumferential surface 64a of the stator 64 come into close contact with each other on a tangent line, and the inner circumferential surface 64a of the stator 64 A fluid conveyance path 69 (cavity) is formed between the rotor 68 and the outer circumferential surface 68a of the rotor 68. The fluid conveyance path 69 extends spirally in the longitudinal direction of the stator 64 and the rotor 68.

When the rotor 68 is rotated within the insertion hole 65 of the stator 64, the fluid conveyance path 69 advances in the longitudinal direction of the stator 64 while rotating within the stator 64. Therefore, when the rotor 68 is rotated, fluid (fluid object) is sucked into the fluid transport path 69 from one end of the stator 64, and while the fluid is confined in the fluid transport path 69, the other end of the stator 64 is sucked into the fluid transport path 69. It is possible to transfer it toward one end and discharge it at the other end of the stator 64.

The power transmission section 74 is for transmitting power from the drive section 78 to the rotor 68 described above. The power transmission section 74 connects the drive shaft (not shown) of the drive section 78 and the rotor 68 so as to allow eccentric rotation. The power transmission section 74 of this embodiment uses a flexible rod 76. More specifically, as shown in FIG. 9, in the pressure feeding device 60, the axis L3 of the rotor 68 is eccentric with respect to the axis L2 of the drive shaft (not shown), and the power transmission unit 74 is connected to allow eccentric rotation of the rotor 68 with respect to the drive shaft. Note that the power transmission section 74 can be selected from various types such as a flexible rod and an Oldham joint.

<About the pressure feeding system>
Next, the pressure feeding system S will be explained.

In the pumping system S, the pumping device 60 and the pushing device 10 are connected by connecting the first opening 71 or the second opening 72 of the pumping device 60 to the extraction section 26 . Further, by removing the first opening 71 or the second opening 72 from the extraction portion 26, the pressure feeding device 60 and the pushing device 10 can be separated.

Here, in the pushing device 10, the take-out portion 26 opens toward the outer side of the hopper 20. Therefore, in the pressure feeding system S, for example, when the pressure feeding device 60 is an existing horizontal uniaxial eccentric screw pump, the pushing device 10 can be easily connected as a retrofit.

To explain in more detail, if the pushing device is to take out the fluid from the bottom of the hopper directly below (if the taking out part is provided along the axial direction of the hopper), the pushing device must be lifted up. Therefore, it is necessary to connect and disconnect the pushing device to the suction port of the pumping device. For example, as shown in FIG. 15(a), in a pushing device 210 in which the take-out portion 226 opens downward along the axial direction of the hopper 220, the pushing device 210 and the pressure feeding device 260 are connected and separated. When doing so, it is necessary to lift the hopper 220 from the pumping device 260.

On the other hand, as shown in FIG. 15(b), in the pressure feeding system S of this embodiment, it is not necessary to lift the pushing device 10, and the pushing device 60 is moved in the lateral direction. 60 can be connected and separated. In addition, in the pressure feeding system S, the pushing device 60 can be connected to and separated from the pushing device 10 while the pushing device 60 is in a horizontal position while the pushing device 10 is installed in a predetermined position (while being installed in a fixed position). . Therefore, in the pressure feeding system S, the pushing device 10 and the pressure feeding device 60 can be easily connected and separated.

As shown in FIG. 2, when the pushing device 10 is connected to the pressure feeding device 60, the pushing direction (pushing direction X) of the fluid in the pushing device 10 and the conveyance direction Y of the fluid in the pressure feeding device 60 are intersect. That is, while the pushing device 10 pushes the fluid from the upper h2 to the lower h1 (along the vertical direction H), the pumping device 60 pushes the fluid from the take-out part 26 in a substantially horizontal direction intersecting the pushing direction X. Transporting fluids.

In this way, in the pressure feeding system S, the pushing device 10 guides the fluid to the take-out section 26 provided near the bottom 24 of the hopper 20, and the push device 60 guides the fluid from the take-out section 26 to the side (in the conveying direction). It is possible to transport fluids (along Y). Therefore, in the pressure feeding system S, the height of the entire device and the height of the supply opening 23 of the hopper 20 can be made lower than in the case where the hopper of the pushing device is arranged above the pressure feeding device. As a result, in the pressure feeding system S, when an operator supplies a fluid to the hopper 20, the operator does not have to lift the container of the fluid very high, which reduces the burden required for the work of supplying the fluid. can.

Further, in the pushing device 10, the rotational power of the drive device 12 is transmitted to the shaft 32 from the lower h1 side of the hopper 20. Therefore, in the pushing device 10, the supply opening 23 of the hopper 20 is completely opened, and there are no parts that become obstacles when trying to supply the fluid, making it easy for the operator to perform the work of supplying the fluid. Further, in the pushing device 10, since the drive device 12 is arranged at the bottom of the hopper 20, even if parts of the drive device 12 fall off, there is no fear that they will fall into the inside of the hopper 20. can. Furthermore, in the pushing device 10, the shaft 32 is covered by the support column 50, which can improve safety and eliminate the provision of a shaft seal (shaft seal can be eliminated).

In the pressure feeding system S, the fluid is supplied from above the internal space 21 of the hopper 20, and is conveyed from the upper side h2 toward the lower side h1 (in the pushing direction X) by the rotation of the screw part 38. The fluid conveyed to the bottom part 24 of the hopper 20 is sucked into the pressure feeding device 60 from the take-out part 26.

Here, in the pressure feeding device 60, a force for sucking the fluid acts efficiently at both ends (first end 66a and second end 66b) of the stator 64. In the pumping system S, the second end 66b of the stator 64 is arranged adjacent to the take-out portion 26 via the end stud 70. In other words, in the pressure feeding system S, the extraction portion 26 is arranged adjacent to a portion where the suction force of the pump acts efficiently. Therefore, when feeding the fluid from the pushing device 10 to the pumping device 60, the pressure feeding system S can shorten the distance from the take-out portion 26 to the stator 64 and efficiently transport the fluid.

Further, the pushing device 10 is provided with a sleeve 54 having a deflection suppressing function and a residual liquid reducing function. Therefore, the pushing device 10 can support the rotating body 36 such as the screw portion 38 while being spaced apart from the shaft 32 in the radial direction, while suppressing rotational wobbling of the rotating body 36 such as the screw portion 38. Fluid (residual liquid) remaining at the bottom 24 of the hopper 20 can be reduced.

<About disassembly and cleaning of the pushing device>
As described above, the pushing device 10 allows the hopper 20, the strut 50, and the rotating body 36 (rotating member 30) to be attached to the base side members (base 14, shaft 32, etc.) by removing the connecting member 58. Can be easily disassembled. Therefore, it is possible to improve maintainability by disassembling and cleaning these members.

In addition, when the hopper 20, the strut 50, and the rotating body 36 (rotating member 30) are removed, the pushing device 10 can be sprayed with water or the like while the shaft 32 is connected to the drive device 12. Can be washed. Furthermore, the base 14 is provided with a drain discharge section 15 (see FIG. 8). Therefore, in the pushing device 10, when cleaning the shaft 32 with the shaft 32 exposed as described above, or when water or fluid enters between the support column 50 and the shaft 32, a drainage path is formed to remove water. By discharging water and the like, it is possible to prevent water and the like from remaining at the root of the shaft 32 (root region A in FIG. 8). As a result, the pushing device 10 can be used hygienically, and liquid leakage toward the drive device 12 can be suppressed.

<About modifications>
Next, modifications of the pushing device of the present invention will be described with reference to FIGS. 10 to 14. In the following description, components having the same configuration as the pushing device 10 and the like according to the above-described embodiment will be described using the same reference numerals as those given in the description of the pushing device 10.

In the pushing device 10 according to the above-described embodiment, the output shaft 13 and the shaft 32 (rotating shaft) of the drive device 12 are connected in series, and the drive device 12 is arranged at the lower part (directly below) of the hopper 20. Although shown, the pushing device of the present invention is not limited thereto.

For example, the drive device 12 may be arranged on the side of the hopper 20, as in the pushing device 100 shown in FIG. 10(a) and the pushing device 105 shown in FIG. 10(b).

Specifically, as in the pushing device 100 shown in FIG. It may also be transmitted to Specifically, the power transmission mechanism 102 may be configured by a pulley 102b provided on the output shaft 13, a pulley 102a provided on the shaft 32, and a transmission member 102c such as a belt. Further, a bearing 104 that supports the shaft 32 may be provided, and the drive device 12 may be stacked on a motor stand 103. Although FIG. 10A shows an example in which the power transmission mechanism 102 is arranged above the base 14, the shaft 32 and the output shaft 13 are passed through the base 14, and the power transmission mechanism 102 is arranged below the base 14. The mechanism 102 may be arranged.

Further, as in the pushing device 105 shown in FIG. 10(b), the shaft 32 is arranged so as to face in the vertical direction H within the hopper 20, and the output shaft 13 is arranged so as to intersect with the axis of the shaft 32. It may be. In this case, the power transmission mechanism 106 is configured by the pulley 106a, the pulley 106b, the roller 106d, the transmission member 106c, etc., and rotational power is transmitted toward the shaft 32 from the output shaft 13 arranged so that the axes thereof intersect. It may be something. Note that power may be transmitted from the output shaft 13 to the shaft 32 using a bevel gear or the like.

In the pushing device 10 according to the embodiment described above, an example was shown in which the hopper 20 etc. can be attached to and detached from the base side member such as the base 14 using the connecting member 58 which is a clamp member, but the pushing device 10 of the present invention The device is not limited to this. For example, as in a pushing device 110 shown in FIG. 11, a bolt 112 may be used as a fastening member to make the hopper 20' or the like detachable from a base member such as the base 14. In the pushing device 110 shown in FIG. 11, the column 50' can be attached to and detached from the base 14 using bolts 112b, and the column 50' and the hopper 20' can be attached and detached using bolts 112a.

In the pushing device 10 according to the above-described embodiment, an example was shown in which the sleeve 54 functions as the deflection suppressing section 56 and the residual liquid reducing section 55, but the pushing device of the present invention is not limited to this.

For example, like the pushing device 120 shown in FIG. 12(a), a sleeve 121 that functions as the shake suppressing part 56 and the residual liquid reducing part 55 is provided, and the sleeve 121 is provided integrally with the rotating body 36 (rotating member 30). It may be something that can be done.

Further, as in the pushing device 122 shown in FIG. 12(b), the ring member 40 is inserted through the support column 50, and the inner circumferential surface of the ring member 40 contacts the outer circumferential surface of the support column 50 to function as a deflection suppressing section 56. It may be something. Further, a sleeve 123 functioning as the residual liquid reducing section 55 may be provided. That is, the pushing device of the present invention may be one in which the remaining liquid reducing section 55 and the swing suppressing section 56 are provided separately, like the pushing device 122 shown in FIG. 12(b).

Furthermore, like the pushing device 124 shown in FIG. 12(c), an annular member 126 is inserted through the support column 50, and the inner circumferential surface of the annular member 126 contacts the outer circumferential surface of the support column 50 to function as a deflection suppressing portion 56. It may be something. Furthermore, an upper bottom portion 125 may be provided on the bottom portion 24 of the hopper 20, which functions as the residual liquid reducing portion 55.

Further, as in the pushing device 127 shown in FIG. 12(d), a sleeve 128 is provided, which includes a second component 128b functioning as a deflection suppressing section 56 and a first component 128a functioning as a residual liquid reducing section 55. The outer circumferential surface of the ring member 40 may be in contact with the sleeve 128 (second component 128b).

As described above, in the pushing device of the present invention, the shake suppressing section and the residual liquid reducing section may be provided as an integral member, or may be provided as separate members. Further, the vibration suppressing portion may be of any type as long as it allows rotation of a part of the rotating body 36 (for example, a ring member) in the circumferential direction while suppressing displacement in the radial direction. .

For example, like the pushing device 130 shown in FIG. 13(a), a sleeve 54 is provided which functions as a deflection suppressing part 56, and the screw part 38 is further brought into contact with the inner wall surface 20a of the hopper 20, so that the rotating body 36 is It may be possible to suppress positional deviation in the radial direction. In this case, it is desirable that the screw portion 38 be provided with a resin lining or the like.

In the pushing device 10 according to the embodiment described above, an example was shown in which the upper end of the shaft 32 and the support column 50 is near the upper end 20b of the hopper 20 and is lower than the upper end 20b, but the pushing device of the present invention is different from this. Not limited. For example, like the pushing device 140 shown in FIG. 13(b), the support 50 and the shaft 32 may have a height that is a position P2 above the height P1 of the upper end 20b of the hopper 20. . Thereby, it is possible to more reliably prevent fluid from entering between the support column 50 and the shaft 32.

Further, in the pressure-feeding system S of the above-described embodiment, an example was shown in which the first opening 71 of the pressure-feeding device 60 was connected to the take-out portion 26, but the pressure-feeding system of the present invention is not limited to this. For example, as shown in FIG. 14, the pump casing 62 side opening (second opening 72) of the pump casing 62 may be connected to the extraction section 26. That is, in the pressure feeding system S, the fluid is supplied from the extraction portion 26 to the second opening 72 (by sucking the fluid from the pump casing 62 side), and the fluid is discharged from the first opening 71 (the end stud 70 side). It may be used as such.

The present invention is not limited to the configuration described in the embodiments described above. The components of each of the embodiments and modifications described above may be arbitrarily selected and combined. Also, any component of each embodiment or modification, any component described in the means for solving the invention, or a component that embodies any component described in the means for solving the invention. It may be configured in any combination.

According to the present invention, it can be suitably used as a pushing device when conveying a high viscosity liquid or the like.

10 Pushing device 12 Drive device 13 Output shaft 14 Base 15 Drain discharge part 20 Hopper 20a Inner wall surface 20b Top end 24 Bottom part 26 Removal part 30 Rotating member 32 Shaft (rotating shaft, rotating member)
34a Cover (rotating member)
36 Swivel body (rotating member)
37 Screw arm (swivel body, rotating member)
38 Screw part (swivel body, rotating member)
40 Ring member (swivel body, rotating member)
50 Strut 50' Strut 54 Sleeve (residual liquid reduction part, vibration suppression part)
54a First component (residual liquid reduction part)
54b Second component (shake suppressing part)
55 Residual liquid reducing part 56 Runout suppressing part 58 Connection member 58a First clamp member (connection member)
58b Second clamp member (connection member)
60 Pressure feeding device 62 Pump casing 64 Stator 66a First end (first end)
66b Second end (second end)
68 Rotor 100 Pushing device 105 Pushing device 110 Pushing device 112 Bolt (connection member)
112a Bolt (connection member)
112b Bolt (connection member)
120 Pushing device 121 Sleeve (residual liquid reduction part, runout suppression part)
122 Pushing device 123 Sleeve (residual liquid reduction part)
125 Bottom upper part 126 Annular member (runout suppressing part)
127 Pushing device 128 Sleeve (residual liquid reducing part, runout suppressing part)
130 Pushing device 140 Pushing device S Pressure feeding system

Claims (16)

A hopper for storing fluid,
a rotating member having a rotating shaft and capable of pushing the fluid toward a take-out portion provided at a bottom side of the hopper by rotating around the rotating shaft within the hopper;
a drive device having an output shaft and for rotationally driving the rotating member;
It is equipped with
the drive device is disposed below or to the side of the hopper,
The rotating shaft is directly or indirectly connected to the output shaft,
The hopper has a flange-shaped seat that is non-rotatably arranged in the hopper and closes a shaft insertion hole provided in the hopper, and is located outside of the hopper at a point where the shaft insertion hole is blocked by the seat. It has an open post,
A pushing device characterized in that the rotating shaft is rotatably inserted into the support column through the opening , so that the rotating shaft is arranged so as not to come into contact with the fluid. The pushing device according to claim 1, wherein the hopper is detachably connected to the drive device. The pushing device according to claim 1 or 2, further comprising a connecting member that detachably connects the support column to the rotating shaft. The pushing device according to any one of claims 1 to 3, further comprising a connecting member that connects the support column to the hopper in a detachable manner. 5. The pushing device according to claim 1, wherein a cover that closes an end of the support column is connected to a distal end side of the rotating shaft. The rotating member is
a cover that closes an end of the support column and is connected to a distal end side of the rotating shaft;
and a revolving body that rotates with rotation of the rotating shaft,
The pushing device according to claim 5, wherein the revolving body is attached directly or indirectly to the cover. The rotating member includes a rotating body that rotates with rotation of the rotating shaft,
The pushing device according to any one of claims 1 to 6, further comprising a shake suppressing portion that suppresses shake of the rotating body. The pushing device according to claim 7, wherein the deflection suppressing portion is provided near the bottom of the hopper. It has a support that is non-rotatably erected within the hopper,
The pushing device according to claim 7 or 8, wherein the deflection suppressing portion is a sleeve that is fitted into the support column. 10. The pushing device according to claim 1, further comprising a residual liquid reducing section that fills a space below the take-out section at the bottom of the hopper. A residual liquid reducing part is provided at the bottom of the hopper to fill a space below the take-out part,
The pushing device according to claim 9, wherein the sleeve functions as the residual liquid reducing section. comprising a base on which the hopper is installed;
the driving device is installed at the bottom of the base;
The pushing device according to any one of claims 1 to 11, wherein the base has a drain discharge part. It has a support that is non-rotatably erected within the hopper,
The pushing device according to any one of claims 1 to 12, wherein the support column extends to near an upper end of the hopper. A pushing device according to any one of claims 1 to 13,
It has a pumping device capable of pumping a fluid,
A pressure-feeding system, wherein the pressure-feeding device is connected to the take-out section. The pressure feeding device
pump casing;
a stator having a cylindrical shape and an inner peripheral surface having a female thread shape, having a first end and a second end, the first end being connected to the pump casing;
15. The pumping system according to claim 14, wherein the pump is a uniaxial eccentric screw pump comprising a rotor formed in a male thread shape and inserted into the stator. 16. The pumping system according to claim 15, wherein the stator is connected directly or indirectly to the extraction section at the second end.

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