JPH0255315B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention is a method for transporting highly viscous fillers, especially grease, stored in containers such as pails to the point of use or subdividing them into separate containers. The present invention relates to a discharging device using an attached suction pump for discharging, and more specifically, to its seal plate mechanism.

(Prior art) Highly viscous fillings such as grease, various creams, or miso contained in containers such as pails and drums are difficult to fluidize due to their high viscosity when being sucked out with a pump. Therefore, if the suction port of the pump is simply inserted into the container filled material, only the material near the suction port will be suctioned, and the portion of the material away from the suction port will be left behind in the container. Therefore, in many cases, it is not possible to remove the product. Furthermore, since the filling material adheres to the wall surface inside the container, it is likely to be left behind. For this reason, conventionally, as shown in FIG. 5, a central opening of a seal plate 14' is attached around the suction port 4c of the pump body 4, and the seal plate 14' is shaped to slide against the inner circumferential wall of the container A.
is inserted into the container A, contacts the filling, and seals the inside of the container A, and applies a forced downward force to the seal plate 14' by the weight of the pump, motor, etc., or by a pneumatic cylinder, etc. While acting,
A method is used in which the liquid is sucked up by the suction pump 1 and carried out to the outside of the container A. By the way, the structure of the seal plate 14' includes an elastic seal plate 31 having a diameter slightly larger than the inner diameter of the can (container) A;
A pair of upper and lower rigid plates 32 and 33, which have a diameter slightly smaller than the inner diameter of the can and are disposed to sandwich the upper and lower surfaces of the elastic seal plate 31, and a pump main body 4 provided in the center of these plates. A mounting port, a through hole 34 drilled through the plate, and a compressed air introduction pipe 35 connected to the through hole 34 and having an on-off valve (not shown) interposed therein.
It is composed of.

(Problems to be Solved by the Invention) When carrying out the grease etc. filled in the can A using the above-mentioned conventional carrying-out device using the seal plate, the suction pump is driven with the on-off valve closed. By inserting the seal plate portion into the can A and gradually lowering it, the peripheral edge of the elastic seal plate 31 bends slightly upward and comes into sliding contact with the inner circumferential wall surface of the can A, sealing the inside of the can A. Grease etc. are carried out via the pump in this state. and,
After all the grease, etc. in can A has been carried out, when pulling up the seal plate section and extracting it out of can A, even if you open the on-off valve to release it to the atmosphere and try to pull up the seal plate section, the lower part of the seal plate will be removed. The sealed space surrounded by the inner circumferential wall of can A and the elastic seal plate 31 is in a negative pressure state, and since grease and the like are attached, hardly any atmospheric air flows into the negative pressure closed space. . Further, as described above, the peripheral edge portion of the elastic seal plate 31 is bent in a direction that provides resistance in the pulling direction of the seal plate portion, and is in contact with the inner circumferential wall of the can A.

Therefore, when lifting the seal plate part, a large lifting force is required using a hydraulic jack, etc. However, if the seal plate part is simply pulled up using a large-capacity hydraulic jack etc., the can will deform and it will not be possible to reuse it. There is a risk that it may become unusable. Therefore, conventionally, compressed air was forcibly fed into the negative pressure closed space inside the can from the compressed air introduction pipe 35, but a compressed air source is required, and for this purpose,
The disadvantages are that the cost of the entire device increases and it requires a large installation space.

This invention was made in view of the above points,
When removing the contents inside the container, the inside of the container can be reliably sealed, and once all the contents have been removed, the container can be easily lifted with a small lifting force without using a conventional compressed air source. It is an object of the present invention to provide an unloading device equipped with a seal plate mechanism that can be pulled out more easily.

(Means for Solving the Problems) The present invention for achieving the above-mentioned object has a shape that is slightly smaller than the opening shape of a container such as a pail can. The tip of the suction port of the pump body is fixedly protruded downward, and an insertion hole is formed in the center of the lower plate, and a sealing member is inserted into the tip of the suction port of the pump body in the insertion hole. The upper and lower peripheral edges of the annular elastic seal packing are fitted so as to be slidably inserted through the upper plate, and the upper and lower peripheral edges of the annular elastic seal packing are attached so as to straddle between the peripheral edge of the upper plate and the lower plate, and the upper plate is brought closer to the lower plate. Accordingly, the elastic seal packing is configured to bulge outward.

(Function) According to the unloading device of the present invention, the seal plate fixed to the tip of the suction port at the lower end of the pump body is inserted into the container from the upper end opening, and the lower plate is brought into contact with the upper surface of the filling in the container. , by starting to drive the pump and pushing down the pump body and upper plate while suctioning from the suction port, the upper plate approaches the lower plate, the volume between the upper and lower plates decreases, and the internal pressure increases. The elastic seal packing bulges outward and comes into pressure contact with the inner circumferential wall of the container, sealing the inside of the container, and the filling inside the container is sucked through the suction port at the lower end of the pump and carried out. Then, as the filling is carried out, the pump main body and the plate portion gradually descend within the container. In this way, after all the contents in the container have been discharged, when the pump body is pulled up, the upper plate is pulled up together with the pump body and separated from the lower plate, so the volume between the upper and lower plates increases and the pressure increases. The elastic seal packing, which had been bulging outward, is contracted inward and separated from the inner peripheral wall of the container, creating a gap between the inner peripheral wall of the container and the seal packing. Since the liquid flows into the bottom of the container and the sealed space below the plate is opened, the plate can be pulled up from inside the container with a small force.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In FIG. 1, 1 is a suction pump, in which a drive device 2 at the upper end, a discharge casing 3 at the middle, and a pump body 4 at the lower end are integrally connected, and a rotor 4a of the pump body 4 is connected together. It is configured to be connected to the drive shaft of the drive device 2 via a connecting rod 4b that passes through the discharge casing 3.
Note that the pump main body 4 is usually a single-screw pump suitable for transporting highly viscous fillers.
A suction port 4c is connected to the lower end of the pump body 4, and a discharge pipe 3a is connected to a discharge port (not shown) provided in the discharge casing 3.

Reference numeral 5 denotes a trolley, on one end of which a lifting support column 6 is erected, and a mounting device 7 for suspending the upper end of the suction pump 1 is arranged along the support column 6 so as to be able to move up and down. There is. Reference numeral 8 denotes a lever for raising the mounting device 7. By swinging this lever 8 back and forth, the mounting device 7 is raised via a manual hydraulic jack 9. Reference numeral 10 denotes a valve opening lever for lowering the mounting device 7. By using this lever 10 to open and close an on-off valve (not shown) of the hydraulic jack 9, the mounting device 7 is lowered by its own weight.

12 is a mounting surface for containers A such as pail cans provided on the trolley 5, and near this mounting surface 12,
A lashing device 13 for container A is provided.

Reference numeral 14 denotes a seal plate portion as the gist of the present invention, and this seal plate portion 14 is attached to the tip of the suction port 4c of the pump body 4 by a mounting member 15.

2 and 3 show a first embodiment of the seal plate portion 14. FIG. In these figures, 21 and 22 are a pair of upper and lower corresponding disc-shaped plates having an outer diameter slightly smaller than the opening diameter of the container A, and the lower surface of the upper plate 21 has a recess 21b except for the peripheral flange 21a. A cylindrical mounting member 24 having a flange 24a projecting from its upper end protrudes downward and is integrally fixed to the opening 23 formed in the center thereof. The tip of the suction port 4c is attached. On the other hand, the upper surface of the lower plate 22 has a peripheral recess 22a.
The central portion 22b protrudes upward leaving behind, and an insertion hole 25 is bored in the central portion. A seal member 24b is provided around the lower end of the mounting member 24.
Further, a sealing member 22c is arranged around the upper end portion of the central portion 22b, and the mounting member 24
is slidably fitted into the insertion hole 25 on the lower plate 22 side, and the inner circumferential surface of the peripheral flange portion 21a is slidably fitted to the outer circumferential surface of the central portion 22b of the lower plate 22, thereby removing the upper and lower plates. 21, 22
are connected to each other so as to be freely accessible and detachable by a connecting member 26 which also serves as a rotation stopper. Further, the upper and lower peripheral edges of the annular elastic seal packing 27 are attached to the lower plate 22 so as to span between the upper edge of the upper plate 21 and the lower edge of the lower plate 22. The elastic seal packing 27 is configured to bulge outward by bringing the upper plate 21 closer together. The reference numeral 28 designates an atmosphere opening hole formed in the upper plate 21, and the reference numeral 29 designates a stopper device for regulating the adjacent positions of the upper and lower plates 21 and 22.

Next, the manner of use of the carrying out device of the embodiment having the above-mentioned configuration will be explained based on FIG. 1. First, the lifting operation lever 8 is operated to raise the suction pump 1 together with the mounting device 7 using the hydraulic jack 9, and the container A is placed on the mounting table 12 of the trolley 5 and fixed by the lashing device 13. Then, operate the lowering lever 10 to lower the suction pump 1 by its own weight, fit the seal plate part 14 into the container A from the upper end opening, and insert the lower plate 22 into the container A.
contact the top surface of the filling inside. In this state, the pump main body 4 starts to be driven, and the pump 1 and the upper plate 21 descend due to their own weight while suction is being drawn from the suction port 4c, so that the upper plate 21 approaches the lower plate 22 and the upper and lower plates 21,
22 The volume between the peripheries is reduced. Therefore, the internal pressure increases and the elastic seal packing 27 bulges outward and comes into pressure contact with the inner circumferential wall surface of the container A, sealing the inside of the filling storage part of the container A, and the filling inside the container A is transferred to the pump body 4. It is sucked in through the suction port 4c at the lower end and carried out from the discharge pipe. Then, as the filling is carried out, the remaining amount of the filling in the container A decreases, and the seal plate part 14 descends due to the weight of the pump 1, the drive device 2, etc., so the suction port of the pump body 4 The parts of the filling material away from the suction port 4c are also collected in the vicinity of the suction port 4c and are sequentially carried out. On the other hand, after all the contents in container A are removed as described above,
When the lifting operation lever 8 is operated again and the entire suction pump 1 is pulled up together with the mounting device 7 using the hydraulic jack 9, the upper plate 21 is pulled up together with the pump body 4 and gradually moves away from the lower plate 22, so that the upper and lower plates The volume between the peripheral edges 21 and 22 increases and the pressure decreases, and the elastic seal packing 27, which had bulged outward, contracts inward and is separated from the inner peripheral wall surface of the container A. As a result, a gap is created between the inner circumferential wall surface of the container A and the seal packing 27, through which the atmosphere flows into the bottom of the container A, and the sealed space below the seal plate portion 14 is opened. Therefore, the lift operation lever 8
If you continue to pull up the entire suction pump 1, the upper plate 21 and the lower plate 2
2 is pulled up from inside container A and extracted.

Next, FIG. 4 shows another embodiment of the seal plate portion of the present invention. The difference from the previous embodiment is that the atmosphere opening hole on the upper plate 21 side is closed, and the entire space between the upper and lower plates 21 and 22 is formed into a closed space. Therefore, in the case of this embodiment, the amount of outward bulge of the elastic seal packing 27 when the upper and lower plates 21, 22 approach each other is larger than that of the seal plate portion 14 of the previous embodiment. On the other hand, compared to the above embodiment, the upper and lower plates 2
Since the volume of the sealed space between 1 and 22 increases and only a small pressure acts per unit area of the seal plate portion 14, it is disadvantageous when the downward force of the upper plate 21 against the lower plate 22 is small.

Note that in the above two embodiments, the opening of the container A is circular, but by changing the shape of the seal plate portion 14, for example, the opening of the container A is circular.
It can also be applied even if the opening is square.

(Effects of the Invention) As explained above, since the unloading device of the present invention has the above-described configuration, it has the following effects.

(1) When inserting the seal plate part up to the top surface of the filling in the container, the outer shape of the seal plate part shrinks to be smaller than the container opening shape, so compared to the conventional seal plate device described above. It can be inserted easily and smoothly, and is particularly convenient because it can be inserted smoothly without requiring any other operation even when inserting the seal plate part with a part of the filling remaining in the container.

(2) When the seal plate is brought into contact with the top surface of the filling and the suction pump is used to transport the filling, the upper plate approaches the lower plate only by the weight of the pump, etc., and the sealed space between the upper and lower plates is pressurized. As a result, the outer shape of the seal plate part bulges outward and is pressed against the inner circumferential wall surface of the container, thereby sealing the inside of the container, so that the filling can be reliably carried out without leaving any contents in the container.

(3) When pulling up the seal plate part from the container after completing or in the middle of carrying out the filling, make sure that the upper plate and the pump body are As a result, the pressure in the upper and lower plate spaces decreases and the surrounding elastic seal packing contracts inward, allowing the negative pressure area on the lower surface of the seal plate to be easily released to atmospheric pressure. Since the outer surface of the plate part does not contact the inner circumferential wall surface of the container, the seal plate part can be pulled out of the container with a small pulling force. Therefore, when the seal plate portion is extracted from the container, it is not necessary to introduce compressed air into the container as in the conventional case, and a compressed air source such as a compressor is not required.

(4) Due to the effect of (3), a small capacity jack can be used as the pump lifting jack.

(5) Similarly, due to the effect of (3), deformation of the container is less likely to occur, and therefore, the number of reuses of the container is significantly increased compared to the conventional seal plate mechanism.

(6) As in the first embodiment, if the sealed space between the upper and lower plates is formed only at the periphery, the downward force applied to the upper plate will effectively act on the sealed space to pressurize or depressurize it. The inside of the container can be reliably sealed using only the weight of the pump, etc.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the unloading device of the present invention, Fig. 2 is an enlarged sectional view of the seal plate section in normal state (when the seal packing is contracted), and Fig. 3 is a seal when the seal packing is expanded. FIG. 4 is an enlarged cross-sectional view of the plate portion, FIG. 4 is a cross-sectional view in a normal state showing another embodiment of the seal plate portion, and FIG. FIG. DESCRIPTION OF SYMBOLS 1... Suction pump, 2... Drive device, 4... Pump body, 4c... Suction port, 9... Hydraulic jack, 14... Seal plate section, 21... Upper plate, 22... Lower plate, 24b ... Seal member, 25 ... Insertion hole, 27 ... Elastic seal packing, A ... Container.

Claims (1)

[Claims] 1. Of a pair of upper and lower corresponding plates each having a shape slightly smaller than the opening shape of a container such as a pail can, the tip of the suction port at the lower end of the pump body is made to protrude downward from the center of the upper plate. At the same time, an insertion hole is bored in the center of the lower plate, and the tip of the suction port at the lower end of the pump body is slidably inserted into the insertion hole via a sealing member. The upper and lower peripheral edges of the annular elastic seal packing are attached so as to span between the peripheral edge and the peripheral edge of the lower plate, and the elastic seal packing bulges outward by bringing the upper plate closer to the lower plate. A device for discharging a substance filled in a container, characterized in that it is configured to do so. 2. The container filling device according to claim 1, wherein the sealed space formed by the upper and lower plates and the elastic seal packing is provided only at the peripheral edge of the plate.