JP7545179B2 - Discharge system and its extruder - Google Patents

Description

Related applications are cross-referenced.
This patent application claims priority to a Chinese patent application filed on August 6, 2020, bearing application number 2020107809366, and entitled "Discharge System and Extruder Thereof," the entire text of which is incorporated herein by reference.

Embodiments of the present invention relate to discharge equipment, in particular a discharge system and its extruder.

Patent document 1 (US5765723A) discloses a sealed liquid bag in which the main body is a sealed soft container made of PVC coated fabric and produced by hot melt welding or high frequency welding, and a liquid inlet valve and a liquid outlet valve are provided at both ends of the sealed soft container. This liquid liner bag is generally relatively effective when used with high flow rate, fluid liquids, but when discharging viscous liquids, the discharge of liquid is slow and inefficient.

Patent document 2 (IL156984A) discloses a sealed liquid bag in which the main body is a sealed soft container made of PVC coated cloth or PE film and produced by hot melt welding or high frequency welding, both ends of the sealed soft container are provided with a liquid inlet valve and a liquid outlet valve, the main body further includes an air bag to assist in discharge, and an air intake port is provided for filling the air bag with air. In the process of discharging the liquid, it is necessary to fill an auxiliary gas bag with air and discharge the viscous liquid by pushing it out with the gas. This is inefficient and increases costs.

Patent document 3 (US2015284181A1) discloses a sealed liquid bag in which the main body is a sealed soft container made of PVC coated cloth or PE film and produced by thermal welding or high frequency welding, and when discharging a viscous liquid, the medium-sized bulk container transporting the liquid uses a mechanical mechanism to tilt the bottom of the medium-sized bulk container so that the discharge outlet is at the lowest point. This operation is time-consuming, inefficient, and difficult to operate.

Patent document 4 (WO2011080402A1) discloses a liquid extrusion device for extruding a viscous liquid, which requires a sealed liquid bag to be suspended before extrusion, and then the suspended liquid bag is gradually pulled up as the extrusion progresses, gradually completing the extrusion. This extrusion equipment is costly, requires a large amount of space, and is complicated to operate, which is relatively time-consuming, inefficient, and difficult to operate.

U.S. Pat. No. 5,765,723 Israel Patent Application No. 156984 US Patent Application Publication No. 2015/284181 International Publication No. 2011/080402

The object of the present invention is to provide an ejection system and an extruder thereof that are simple in structure, easy to operate, and cost-saving.

In order to solve the above technical problems, an embodiment of the present invention is an extruder including an extrusion device having a pair of roll shafts, the pair of roll shafts operably holding a liner bag and applying an extrusion force to the liner bag when rotating in opposite directions relative to each other,
A transmission device connected to the roll shaft;
A guide bar is vertically installed and connected to the transmission device;
The present invention provides an extruder, further comprising a driving member connected to the guide bar for rotating the guide bar about its axis, wherein the guide bar drives the transmission device when rotating to rotate the pair of roll shafts in opposite directions relative to each other, and the guide bar and the extrusion device rise and fall in the axial direction of the guide bar.

An embodiment of the present invention further provides a discharge system including a container and a liner bag installed in the container, further including an extruder as described above, the drive member of the extruder being installed in the container.

Compared with the prior art, the embodiment of the present invention is provided with a transmission device, a guide bar, and a driving member, the driving member is connected to the guide bar, the guide bar is connected to the transmission device, the driving member drives the guide bar, the guide bar rotates around its axis, and the transmission device connected to the guide bar transmits the pair of roll shafts of the extrusion device to rotate in opposite directions relative to each other, thereby extruding the liner bag and extruding the liquid in the liner bag. At the same time, while the roll shafts are driven to extrude the liner bag, the roll shafts descend as the liquid in the liner bag decreases, and the guide bar descends together with the transmission device and the roll shafts, thereby realizing the extrusion of the liquid in the liner bag, and the structure of the extruder is simple, easy to operate, and cost-saving.

In one embodiment, the drive member comprises:
A connecting shaft is installed perpendicular to the guide bar;
a first direction changing gear fixedly fitted to the connecting shaft;
and a second direction change gear that is fitted to the guide bar and meshes with the first direction change gear, the guide bar being rotated when the second direction change gear is operably rotated, and the guide bar being installed so as to be slidable with the second direction change gear in its axial direction.

In one embodiment, a guide bush is fitted between the guide bar and the second direction change gear, the second direction change gear is fixed to the guide bush, and the guide bar is slidably connected to the guide bush in its axial direction.

In one embodiment, the inner wall of the guide bush is an inner polygonal wall surface,
The outer wall surface of the guide bar is an outer polygonal wall surface that matches the inner wall of the guide bush.

In one embodiment, a handwheel is provided on the connecting shaft.

In one embodiment, an electric power member is connected to the connecting shaft.

In one embodiment, the drive member further includes a deceleration box to which the connecting shaft and the guide bar are connected.

In one embodiment, the transmission comprises:
A transmission shaft connected to the guide bar;
A worm connected to the transmission shaft;
A worm wheel is fixed coaxially to any one of the roll shafts and meshes with the worm.

In one embodiment, a drive gear is coaxially fixed to the roll shaft on which the worm wheel is fitted, and a driven gear is coaxially fixed to the other roll shaft, and the driven gear meshes with the drive gear.

In one embodiment, the transmission comprises:
a transmission assembly coupled to any one of the roll shafts;
a flexible member connecting the transmission assembly and the guide bar.

One or more embodiments are illustratively described by corresponding figures in the drawings, and these illustrative descriptions do not constitute limitations of the embodiments, and elements having the same reference numerals in the drawings are represented as similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise specified.

FIG. 1 is a cross-sectional view (initial state) of an extruder according to an embodiment of the present invention extruding a liner bag into a container. FIG. 2 is a cross-sectional view (midway) of an extruder according to an embodiment of the present invention extruding a liner bag into a container. FIG. 3 is an enlarged view of a portion A in FIG. FIG. 4 is an enlarged view of a portion B in FIG. FIG. 5 is an exploded view of an extruder according to an embodiment of the present invention. FIG. 6 is a schematic diagram of a hook joint structure according to an embodiment of the present invention. FIG. 7 is a cross-sectional view showing an assembly of a guide bar and a guide bush according to an embodiment of the present invention. FIG. 8 is a cross-sectional view showing an assembly of a guide bar and a guide bush according to another embodiment of the present invention. FIG. 9 is a cross-sectional view of an extrusion device according to an embodiment of the present invention. 10 is a schematic diagram of a discharge system according to an embodiment of the present invention.

Among them, 1, extrusion device; 2, liner bag; 3, guide bar; 41, connecting shaft; 42, first direction change gear; 43, second direction change gear; 5, reduction box; 6, handle wheel; 7, guide bush; 81, transmission shaft; 82, worm; 83, worm wheel; 84, hook joint; 9, container; 110, driving gear; 120, driven gear; 11, roll shaft; 12, roll shaft.

In order to make the objectives, technical proposals and advantages of the embodiments of the present invention clearer, the following describes each embodiment of the present invention in detail in conjunction with the accompanying drawings. However, those skilled in the art can understand that many technical details are presented in each embodiment of the present invention to allow the reader to better understand the present application. However, the technical solution claimed for protection in this application can be realized without these technical details and various changes and modifications based on the following embodiments.

In the following description, for the purpose of explaining each disclosed embodiment, certain specific details are set forth in order to provide a thorough understanding of each disclosed embodiment. However, one skilled in the art should recognize that an embodiment may be practiced without one or more of these specific details. In other instances, well-known devices, structures, and techniques related to the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Unless the context otherwise requires, throughout the specification and claims, the word "comprises" and variations thereof, such as "including" and "having," are to be understood in an open and inclusive sense, i.e., to mean "including, but not limited to."

References throughout the specification to "one embodiment" or "one embodiment" mean that a particular feature, structure, or characteristic described in the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in one embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Also, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a," "an," and "said" include plural referents unless the context clearly dictates otherwise. The term "or" is generally used in its sense to include "and/or" unless the context clearly dictates otherwise.

In the following description, many directional terms are used to clearly indicate the configuration and operation of the present invention, but terms such as "front," "rear," "left," "right," "outside," "inside," "outward facing," "inward facing," "up," and "down" should be understood as terms of convenience rather than limitations.

Explanation of terms Medium-sized bulk container: Intermediate-sized bulk container (hereinafter referred to as IBC container) is a packaging turnaround container widely used in food, biochemistry, medicine, chemical industry and other industries in the international scope. IBC container barrels can be reused many times, which has obvious advantages in filling, storage and transportation. Compared with circular barrels, IBC container barrels can save 35% storage space, and the size meets ISO standards. Not only is it suitable for aseptic filling, but the box is compact and convenient for safe and efficient storage in large quantities, so it can be used in the transportation, packaging and storage processes of large quantities of liquid, granules, flakes and other materials. Currently, there are three types of specifications: 820L, 1000L, and 1250L, and the structure usually includes a plastic inner container (liner bag), a filling port, a discharge device (such as a valve or a simple discharge port), a side plate, a base, and a cover plate.

The extruder of the present invention includes at least a pair of extruding members, such as at least two roll shafts, and when it is necessary to discharge the liquid in the liner bag, the two roll shafts sandwich the liner bag and are driven by a driving member, and the pair of extruding members move relative to each other, for example so that the two roll shafts rotate in opposite directions relative to each other, to apply an extruding force to the liner bag, thereby extruding and discharging the liquid in the liner bag, and as the liquid in the liner bag decreases during liquid discharge, the two roll shafts automatically descend together with the liquid level due to the drive of the driving device, thereby extruding the liquid. In this text, the extruding force refers to a force that simultaneously produces a squeezing and pushing effect on the object on which the force acts, for example, the liner bag and the liquid contained therein.

In an embodiment of the present invention, the extruder includes an extrusion device 1 having a pair of roll shafts, a transmission device, a guide bar 3, and a driving member. The pair of roll shafts operably hold the liner bag 2, the driving member is connected to the guide bar 3 and drives the guide bar 3 to rotate around its axis, the transmission device is connected to the guide bar 3 and the roll shafts, and the rotation of the guide bar 3 transmits and drives the transmission device, and the transmission device rotates the pair of roll shafts in opposite directions relative to each other to extrude the liner bag 2. When the liquid in the liner bag 2 is pushed out and the weight of the liner bag 2 decreases, and the roll shafts and the liner bag 2 descend, the guide bar 3 moves downward due to its own gravity and the downward thrust applied to the guide bar 3 when the driving member is driven, and the guide bar 3 maintains the transmission force that drives the transmission device.

As can be seen from the above, a transmission device, a guide bar 3, and a driving member are provided, the driving member is connected to the guide bar 3, the guide bar 3 is connected to the transmission device, the driving member drives the guide bar 3, the guide bar 3 rotates around its axis, and the transmission device connected to the guide bar 3 transmits the pair of roll shafts of the extrusion device 1 to rotate in opposite directions relative to each other, thereby extruding the liner bag 2 and extruding the liquid in the liner bag 2. At the same time, while the roll shafts are driven to extrude the liner bag 2, the roll shafts descend as the liquid in the liner bag 2 decreases, and the guide bar 3 descends together with the transmission device with the downward movement of the roll shafts, thereby realizing the extrusion of the liquid in the liner bag 2, and the extruder has a simple structure, is easy to operate, and can reduce costs.

Specifically, the driving member includes a connecting shaft 41 that is installed perpendicular to the guide bar 3, a first direction change gear 42, and a second direction change gear 43. The connecting shaft 41 is inserted into the reduction box 5, and the connecting shaft 41 is fixed to the reduction box 5 by a bearing and a clamp spring. The first direction change gear 42 is fixedly fitted to one end of the connecting shaft 41 that is inserted into the reduction box 5, and the first direction change gear 42 is installed coaxially with the connecting shaft 41. The guide bar 3 passes through the reduction box 5, and the second direction change gear 43 is fitted to the guide bar 3, and the second direction change gear 43 is installed coaxially with the guide bar 3 and is located in the reduction box 5, and the second direction change gear 43 meshes with the first direction change gear 42. Rotation of the connecting shaft 41 rotates the first direction change gear 42, which rotates the second direction change gear 43, which rotates the guide bar 3. A handwheel 6 is provided on the connecting shaft 41. This allows the liner bag 2 to be pushed out and adjusted manually at any time from the side of the container 9, simplifies the structure, reduces weight, and makes it easier for people to operate.

The connecting shaft 41 may be installed in the same direction as the guide bar 3. In this case, the handle wheel 6 is fixed to the connecting shaft 41 and positioned at the upper end of the guide bar 3, and it can be understood that the user operates it from directly above, rotating the handle wheel 6 to drive the extruder.

Also, an electric power member may be connected to the connecting shaft 41, and the connecting shaft 41 may be driven and rotated by the electric power member. The electric power member may be a motor, and the main shaft of the motor is connected to the connecting shaft 41 via a shaft coupling. Of course, the electric power member may be another electric structure.

Furthermore, the guide bush 7 is fitted between the guide bar 3 and the second direction-changing gear 43, the guide bush 7 is fixed to the deceleration box 5 by a bearing and a clamp spring, the second direction-changing gear 43 is fixed to the guide bush 7, and the guide bar 3 is slidably connected to the guide bush 7 in its axial direction. The inner wall of the guide bush 7 is an inner polygonal wall surface, and the outer wall surface of the guide bar 3 is an outer polygonal wall surface that matches the inner wall of the guide bush 7. That is, if the guide bar 3 is a hexagonal column-shaped rod, the guide bush 7 is a hexagonal hole, the guide bar 3 passes through the guide bush 7, and when the guide bush 7 rotates, the guide bar 3 can be rotated and at the same time the guide bar 3 can be slid up and down, so that the guide bar 3 can always supply stable power to the transmission device. It can be understood that the guide bar 3 may be a pentagonal column-shaped rod, the guide bush 7 may be a pentagonal hole, and the guide bar 3 only needs to fit the guide bush 7. Also, a portion of the inner wall of the hole of the guide bush 7 may be flat, and a portion of the outer wall of the guide bar 3 may also be flat, with the flat surface of the outer wall of the guide bar 3 abutting against the flat surface of the inner wall of the guide bush 7, and the guide bush 7 may rotate to rotate the guide bar 3.

Furthermore, the transmission device includes a transmission assembly and a flexible member connecting the transmission assembly and the guide bar 3. The transmission assembly includes a transmission shaft 81, a worm 82, and a worm wheel 83. The transmission shaft 81 connects the flexible member and the worm 82, the worm wheel 83 meshes with the worm 82, and the worm wheel 83 is fixed coaxially to the roll shaft 11. The guide bar 3 rotates the flexible member, the flexible member rotates the transmission shaft 81, the worm 82 is driven by the transmission shaft 81, the worm 82 rotates the worm wheel 83, and the worm wheel 83 rotates the roll shaft. Meanwhile, a driving gear 110 is fixed coaxially to the roll shaft 11, and a driven gear 120 meshing with the driving gear 110 is fixed coaxially to the roll shaft 12. After the roll shaft 11 rotates, the driving gear 110 rotates to drive the driven gear 120, which also rotates the roll shaft 12, thereby realizing the rotation of the two roll shafts to push out the liner bag 2. This flexible member can be a hook joint 84. This prevents jamming in the flexible direction during operation, and the hook joint 84 can be used to solve problems such as jamming, and a spring can be fitted to the outside of the hook joint 84, allowing the hook joint 84 to operate within a certain flexibility range and prevent jamming, and the direction change dimension can be set to any gear ratio according to demand. It can be understood that the flexible member can also be a spring member, etc.

In some embodiments, the flexible member may not be required, and the transmission shaft 81 connects the guide bar 3 and the worm 82, the guide bar 3 rotates to rotate the transmission shaft 81, the worm 82 is driven by the transmission shaft 81, the worm 82 drives and rotates the worm wheel 83, and the worm wheel 83 rotates the roll shaft 11.

Another embodiment of the present invention relates to a discharge system including a container 9, a liner bag 2 installed in the container 9, and the above-mentioned extruder, in which the drive member of the extruder is installed on the container 9, a reducer is installed on the top of the container 9, a guide bar 3 passes through the reducer and extends downward within the container 9, and a handwheel 6 is attached to the outside of the side wall of the container 9.

Although preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to provide additional embodiments using aspects, features, and concepts of various patents, applications, and publications.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be considered limited to the specific embodiments disclosed in the description and claims, but should be understood to include all possible embodiments along with any equivalent scope to which these claims are entitled.

Those skilled in the art will understand that the above-described embodiments are specific examples for implementing the present invention, and that in actual applications, various changes in form and details are possible without departing from the spirit and scope of the present invention.

Claims (11)

An extruder comprising an extrusion device having a pair of roll shafts, the pair of roll shafts operably holding a liner bag and applying an extrusion force to the liner bag when rotating in opposite directions relative to each other,
A transmission device connected to the roll shaft;
A guide bar is vertically installed and connected to the transmission device;
a driving member connected to the guide bar for rotating the guide bar about its axis, wherein the guide bar drives the transmission device when rotating to rotate the pair of roll shafts in opposite directions relative to each other, and the guide bar and the extrusion device are raised and lowered in the axial direction of the guide bar. The driving member is
A connecting shaft is installed perpendicular to the guide bar;
a first direction changing gear fixedly fitted to the connecting shaft;
2. The extruder according to claim 1, further comprising: a second direction change gear fitted to the guide bar and meshing with the first direction change gear, wherein the second direction change gear rotates operably to rotate the guide bar, and the guide bar is slidably installed with the second direction change gear in its axial direction. The extruder according to claim 2, characterized in that a guide bush is fitted between the guide bar and the second direction change gear, the second direction change gear is fixed to the guide bush, and the guide bar is slidably connected to the guide bush in its axial direction. The inner wall of the guide bush is an inner polygonal wall surface,
4. The extruder according to claim 3, wherein the outer wall surface of the guide bar is an outer polygonal wall surface that matches the inner wall of the guide bush. The extruder according to claim 4, characterized in that a handwheel is provided on the connecting shaft. The extruder according to claim 2, characterized in that an electric power member is connected to the connecting shaft. The extruder according to claim 2, characterized in that the driving member further includes a deceleration box to which the connecting shaft and the guide bar are connected. The transmission device is
A transmission shaft connected to the guide bar;
A worm connected to the transmission shaft;
2. The extruder according to claim 1, further comprising: a worm wheel fixed coaxially to any one of the roll shafts and meshing with the worm. The extruder according to claim 8, characterized in that a drive gear is coaxially fixed to the roll shaft on which the worm wheel is fitted, and a driven gear is coaxially fixed to the other roll shaft, and the driven gear meshes with the drive gear. The transmission device is
a transmission assembly coupled to any one of the roll shafts;
2. The extruder of claim 1, further comprising a flexible member connecting said transmission assembly and said guide bar. 11. A discharge system comprising a container and a liner bag disposed within the container, further comprising an extruder as described in any one of claims 1 to 10, wherein a drive member of the extruder is disposed within the container.