CN111392434A - Elastic polymer receiving device and dynamic discharging method - Google Patents

Abstract

The invention relates to an elastic gathering material receiving device and a dynamic discharging method, and adopts the technical scheme that a rectangular frame which slides up and down along the height direction is arranged in a box body, an upper bag body is arranged between the upper part of the rectangular frame and the inner wall of a top plate of the box body, a lower bag body is hung at the lower part of the rectangular frame, a charging space is enclosed by the upper bag body, the rectangular frame and the lower bag body together, a charging hole which is communicated with the inside and the outside is formed in the center of the top plate of the box body where the charging space is positioned, a driving sleeve is inserted on the charging hole in a rotating manner, a torsion spring which is used for storing or releasing the torque between the upper sleeve body and the lower sleeve body is arranged between the upper sleeve body and the lower sleeve body, a steel wire rope is connected to the four corners of the rectangular frame, the upper end of the steel wire rope winds around a fixed pulley which corresponds to one, is an innovation on a powder material loading and transporting device.

Description

Elastic polymer receiving device and dynamic discharging method

technical field

The invention relates to an elastic aggregate collecting device and a dynamic discharging method for powder (granular material) shipping.

Background technique

Most industrial powder materials have small particles, strong fluidity, easy loss and pollution. At present, such powder materials are often shipped through truck boxes and ship warehouses. The discharge channel sucks out the powder material under the action of the fan. When the material is discharged by the wind, the powder material that is far away from the discharge channel remains and is difficult to be sent out. Usually the final residual amount reaches 10%-30% of the total amount, which requires manual labor in the later stage. It is time-consuming and laborious to enter the carriage for cleaning, and the overall collection speed is slow and the efficiency is low. Its improvement and innovation are imperative.

SUMMARY OF THE INVENTION

In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide an elastic aggregate material receiving device and a dynamic discharging method, which can effectively solve the problems of large residual volume and low discharging efficiency of the carriage by wind power.

The technical scheme solved by the present invention is:

An elastic polymer material receiving device comprises a box body, the box body is a hollow structure, a rectangular frame sliding up and down along the height direction is arranged in the box body, an upper bag body is arranged between the upper part of the rectangular frame and the inner wall of the box body top plate, and the upper bag body is provided. The upper edge of the body is sealingly connected to the inner wall of the top plate of the box body, the lower edge of the upper bag body is sealingly connected to the rectangular frame, the lower bag body is suspended from the lower part of the rectangular frame, and the lower bag body is a hollow structure with an upper opening, and its upper opening is connected to the lower part of the rectangular frame. Sealed connection, the upper bag body, the rectangular frame and the lower bag body together form a charging space. The center of the top plate of the box where the charging space is located has a material opening that is connected to the inside and outside. The material opening is rotated and inserted with a driving sleeve. There is a feeding channel that runs through the upper and lower sides. The lower end of the driving sleeve extends into the charging space along the material opening. The outer wall of the protruding part of the driving sleeve is fixedly connected with an upper sleeve body that protrudes away from the axis. The lower part of the upper sleeve body is sleeved. There is a lower sleeve body that rotates relatively. The inner edge of the lower sleeve body is separated from the driving sleeve. The outer wall of the lower sleeve body is provided with a wire winding groove. The upper sleeve body and the lower sleeve body are used for storing or releasing the upper and lower sleeves. The torsion spring of the torque between the sleeves, the inside of the upper bag body, is connected with a steel wire rope at the four corners of the rectangular frame, the lower end of the steel wire rope is fixed with the rectangular frame, the upper end of the steel wire rope bypasses the one-to-one corresponding fixed pulley and then is installed on the lower sleeve body In the winding groove on the outer wall, the upper surface of the box outside the material port is provided with an upwardly protruding limit pipe, a ratchet wheel is fixed on the outer wall of the driving sleeve extending out of the material port, and a ratchet wheel is rotated on the inner wall of the limit pipe. The corresponding pawls constitute the unidirectional rotation structure of the drive sleeve.

A method for dynamically discharging powder materials using the above elastic polymer receiving device, comprising the following steps:

1. Loading

Load the powder material into the charging space from the material channel in the center of the drive sleeve, and then install the sealing cover matching the upper opening of the limit pipe to seal to complete the charging;

Second, the torsion spring preload

After the box body is transported to the destination, open the sealing cover, rotate the drive sleeve clockwise, and drive the upper sleeve body to rotate clockwise. Due to the heavy weight of the powder material and the tight wire rope, the lower sleeve body cannot rotate, so the rotation of the upper sleeve body In the process, the torsion spring between the upper and lower sleeve bodies is pre-tightened, and finally the ratchet wheel is clamped by the pawl, so that the upper sleeve body cannot rotate counterclockwise to release the pre-tightening force of the torsion spring and complete the pre-tightening of the torsion spring;

3. Unloading

Insert the feeding pipeline into the charging space from the feeding channel in the center of the drive sleeve, and start the exhaust fan on the feeding pipeline at the same time. The lower port of the feeding pipeline is sent out. As the powder material is sent out, the powder material in the center of the charging cavity is first sent out, so that a groove is gradually formed in the center. At the same time, the feeding pipeline is continuously moved downward during the discharging process. The grooves increase, and the surrounding powder materials continue to concentrate in the middle. Since the thickness of the surrounding powder materials in the vertical direction continues to shrink, that is, the weight of the surrounding powder materials continues to decrease, and the elastic pre-tightening force of the torsion spring is released through the wire rope. Drive the lower sleeve to rotate, drive the wire rope to continuously rotate and wrap in the winding groove of the lower sleeve, pull up the rectangular frame, and finally the lower bag body around it is lifted up under the traction of the rectangular frame, so that it can be pulled up from the surrounding of the loading space. A downward slope is formed toward the center, and the powder material is continuously concentrated and sent from the lower port of the feeding pipeline along the slope surface to the center, so that the powder material in the charging cavity is completely cleaned, so that there is no residue in the receiving material.

The invention has novel and unique structure, is simple and reasonable, easy to produce, and easy to operate. By arranging a torsion spring between the relatively rotatable upper sleeve body and the lower sleeve body, the rotation of the sleeve body is skillfully limited by the gravity of the powder material itself. Therefore, the torsion spring is pre-tightened by the rotation of the upper sleeve body, and the bag body is retracted and stored by the pre-tightening force; the upper bag body, the rectangular frame and the lower bag body form a closed loading space, so that the wind can be compressed by air pressure. As the material is collected, the weight of the surrounding powder material decreases continuously, the elastic preload of the torsion spring is released through the wire rope, the rectangular frame is pulled up, and a downward slope is formed from the periphery of the loading space to the center. On the surface, the powder material is continuously concentrated to the center along the slope and sent out from the lower port of the feeding pipeline, so that all the powder material in the charging space is cleaned up, so that there is no residue in the collection. There are 10%-30% residues, which need to be cleaned manually. The technical solution of the present application achieves almost no residues, which greatly improves the efficiency of unloading, compresses the time for unloading, saves the cost of unloading, and is convenient to use and effective. Well, an innovation in the powder material handling unit.

Description of drawings

FIG. 1 is a cross-sectional front view of the present invention.

2-4 are sectional front views of the use state of the material receiving process of the present invention in sequence. Among them, the rectangular frame in Figure 2 and Figure 3 is not lifted up and is located at the lower limit position, and the rectangular frame in Figure 4 is lifted up and is located at the upper limit position

5 is a cross-sectional bottom view of the box of the present invention.

6 is a cross-sectional top view of the rectangular frame of the present invention.

FIG. 7 is a partial enlarged view of A in FIG. 6 of the present invention.

FIG. 8 is a partial enlarged cross-sectional view of the drive sleeve of the present invention.

9 and 10 are top views of the ratchet wheel of the present invention. Figure 9 shows that the pawl is stuck in the tooth slot of the ratchet wheel, and Figure 10 shows that the pawl is disengaged from the tooth slot of the ratchet wheel.

Detailed ways

The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

1-10, the present invention includes a box body 1, the box body 1 is a hollow structure, the box body 1 is provided with a rectangular frame 8 that slides up and down along the height direction, and the upper part of the rectangular frame 8 is arranged between the inner wall of the box top plate There is an upper bag body 9a, the upper edge of the upper bag body 9a is sealingly connected with the inner wall of the top plate of the box body, and the lower edge of the upper bag body 9a is sealingly connected with the rectangular frame 8, the lower part of the rectangular frame 8 is hung with a lower bag body 9b, the lower bag body 9b It is a hollow structure with an upper opening, and its upper opening is sealed with the lower part of the rectangular frame 8. The upper bag body 9a, the rectangular frame 8 and the lower bag body 9b together form a charging space 9, and the center of the top plate of the box where the charging space 9 is located is open. There is a material port 1a that communicates with the inside and outside. The material port 1a is rotatably inserted with a drive sleeve 2. The center of the drive sleeve 2 has a feed channel 2a that runs through the upper and lower sides. The outer wall of the drive sleeve that extends into the part is fixedly connected with an upper sleeve body 4 extending in a direction away from the axis. The lower sleeve body 5 is sleeved at the lower part of the upper sleeve body 4 with a relatively rotating lower sleeve body. Phase separation, the outer wall of the lower sleeve body 5 is provided with a winding groove 5a, the upper sleeve body 4 and the lower sleeve body 5 for storing or releasing the torsion spring 6 between the upper and lower sleeve bodies, the upper bag body 9a On the inner side, the four corners of the rectangular frame 8 are connected with a wire rope 12, the lower end of the wire rope 12 is fixed with the rectangular frame, and the upper end of the wire rope 12 goes around the one-to-one corresponding fixed pulley 11 and then winds around the winding groove 5a on the outer wall of the lower sleeve. Inside, the upper surface of the box outside the material port 1a is provided with a limit pipe 13 protruding upward, a ratchet wheel 3 is fixed on the outer wall of the drive sleeve 2 extending out of the material port, and a ratchet wheel 3 is rotated on the inner wall of the limit pipe 13. The corresponding pawl 7 constitutes a one-way rotation structure of the drive sleeve.

In order to ensure the use effect, the upper bag body and the lower bag body are made of airtight and variable materials, such as rubber tarpaulin, aramid cloth covered with rubber and other deformable and airtight materials. After the rectangular frame rises, the upper bag body will be compressed and deformed; the box body is a rectangular parallelepiped carriage, which can be made of steel plates.

The sealing connection between the upper end of the upper bag body 9a and the box body can be suspended in the box body by glue connection, and the sealing connection between the lower edge of the upper bag body and the upper edge of the lower bag body and the rectangular frame can be connected by glue.

The drive sleeve 2 includes a drive sleeve main body 21 and a limiting top plate 22 fixedly connected to the top outer wall of the drive sleeve main body. The drive sleeve main body 21 is inserted into the loading space 9 along the material opening 1a, and the upper sleeve body 4 is connected to the insertion device. The outer walls of the main body of the driving sleeve in the material space are fixed together; the limiting top plate 22 falls on the surface of the box body, the main body of the driving sleeve is inserted along the material opening and the outer diameter of the main body of the driving sleeve is smaller than the inner diameter of the material opening, so the driving sleeve can be relative to the material opening. Rotation, in order to facilitate the relative rotation of the two, in actual production, guide components, such as annular guide rails, sliders, pulleys, etc., can also be set between the limit top plate and the surface of the box.

A rotating handle 18 extending upward is fixed on the limiting top plate 22; open the sealing cover 14, enter from the limiting pipe 13, and hold the rotating handle to rotate the drive sleeve 2 relative to the material port, thereby driving the upper sleeve body 4 to rotate , which is convenient for torsion spring preload operation.

A vertically arranged rotating shaft 71 is fixed between the inner wall of the limiting pipe 13 and the ratchet wheel 3, the ratchet pawl 7 is rotatably connected to the rotating shaft 71, and one side of the ratchet claw 7 is provided with a limit block 72 fixed on the drive sleeve; Move the pawl, insert the stop pawl at the end of the pawl into the tooth slot of the ratchet (as shown in Figure 9), turn the drive sleeve clockwise by rotating the handle, the stop pawl of the pawl slides on the tooth back of the ratchet, It does not affect its clockwise rotation, so as to pre-tighten the torsion spring between the upper and lower sleeve bodies. After the pre-tightening is completed, since the pawl is close to the limit block, and the pawl is stuck in the tooth groove of the ratchet wheel, the drive The sleeve cannot be turned counterclockwise. After receiving the material, move the pawl outward to make the pawl disengage from the tooth slot of the ratchet (as shown in Figure 10), then the drive sleeve can be released, and the rectangular frame can be lowered and reset.

The four corners of the rectangular frame 8 are provided with rollers 17 that roll in the vertical direction, the inner walls on both sides of the box body 1 are equipped with rails 15 arranged in the vertical direction, and the rollers are placed in the rails and slide up and down along the length direction. A guide structure for sliding up and down along the periphery of the lower bag body is formed.

The four corners of the rectangular frame 8 are respectively connected with roller support plates 171 . The rollers 17 are rotatably connected to the roller support plates 171 through a rotating shaft, and the rollers 17 are slidably arranged in the rails 15 .

The inner four corners of the upper bag body 9a are respectively fixed with hooks 18 for fixedly connecting the wire ropes, and the lower ends of the wire ropes 12 are fixedly connected to the hooks. The fixed pulley is fixed on the top plate of the box through the pulley support plate.

A sealing cover 14 for sealing the upper opening of the limiting pipe 13 is screwed on the upper opening.

A feeding pipeline 16 extending into the charging space 9 is inserted in the center of the feeding channel 2a, and an exhaust fan is installed at one end of the feeding pipeline 16 extending out of the box.

A powder flow meter can be set on the feeding pipeline 16 to monitor its flow. With the progress of discharging, the feeding pipeline can be moved downward, which can be manually lifted or lowered, or a conventional clamping mechanism can be set outside the box. For example, a guide sleeve is set for the clamping mechanism of the manipulator and hydraulic cylinder. The feeding pipeline passes through the center hole of the guide sleeve and is clamped by the telescopic rod of the hydraulic cylinder. The powder flow meter can monitor the flow of powder materials in real time, which is an existing technology. For example, the powder flow meter of HDLDG-06 sold by Wuhan Huadelin Technology Co., Ltd. can be used to pass the powder flow rate. The flow meter monitors the flow to judge the lift. If the flow continues to decrease, lower the feeding pipeline to keep a small distance (3-5cm) from the surface of the material to ensure the release of pressure and facilitate the discharge.

The height of the lower limit position of the rectangular frame 8 is 1/3 of the total height of the inner cavity of the box, and the height of the upper limit position of the rectangular frame 8 is 2/3 of the total height of the inner cavity of the box; this limit position is determined by the length and height of the rail 15. The position is determined, and the height position is defined as a preferred embodiment. The initial state is shown in Figures 1 and 2. The lower bag body falls on the bottom of the box body, and the rectangular frame lifts the lower bag body from the height of the box body. 1/3 position lift. When the height is 2/3, the upper edge of the lower bag body can be lifted up, forming a slope (a large upper and a small trapezoid at the bottom), and the surrounding powder materials can be concentrated along the slope to the center.

A method for dynamically discharging powder materials using the above elastic polymer receiving device, comprising the following steps:

1. Loading

The powder material 10 is loaded into the charging space 9 from the material channel 2a in the center of the driving sleeve 2, and then the sealing cover 14 matching the upper opening of the limit pipe 13 is installed to seal, and the charging is completed;

Second, the torsion spring preload

After the box body is transported to the destination, open the sealing cover 14, rotate the driving sleeve 2 clockwise, and drive the upper sleeve body 4 to rotate clockwise. Due to the heavy weight of the powder material 10, the wire rope is compressed, so that the lower sleeve body 5 cannot rotate. During the rotation of the upper sleeve body, the torsion spring between the upper sleeve body and the lower sleeve body is pre-tightened, and finally the ratchet wheel is caught by the pawl, so that the upper sleeve body 4 cannot be rotated counterclockwise to release the pre-tightening force of the torsion spring, and the torsion spring is completed. preload;

3. Unloading

Insert the feeding pipeline 16 into the charging space 9 from the feeding channel 2a in the center of the drive sleeve 2, and start the exhaust fan on the feeding pipeline 9 at the same time. Under the action of negative pressure, it is sent out from the lower port of the feeding pipeline 9. As the powder material is sent out, the powder material in the center of the charging cavity is first sent out, so that a groove is gradually formed in the center (as shown in Figure 3). During the discharging process, the feeding pipeline is continuously moved downward. As the groove increases, the surrounding powder materials continue to concentrate in the middle. Since the thickness of the surrounding powder materials in the vertical direction continues to shrink, that is, the surrounding powder materials continue to decrease in weight. Small, the elastic pre-tightening force of the torsion spring is released by the wire rope, which drives the lower sleeve to rotate, and drives the wire rope to continuously rotate and wrap in the winding groove 5a of the lower sleeve, and pulls the rectangular frame upwards. Finally, the surrounding lower bag body is in a rectangular shape. The frame is lifted up under the traction, and the middle part is not lifted due to the heavy weight of the powder material, and at the same time, it is not lifted under the limit of the lower end of the feeding pipeline, thus forming a downward slope from the periphery of the loading space to the center (as shown in the figure). 4), the powder material is continuously concentrated to the center along the slope and sent out from the lower port of the feeding pipeline, so that the powder material in the charging cavity is completely cleaned, so that there is no residue in the receiving material.

Compared with the prior art, the present invention has the following advantages:

1. By arranging a torsion spring between the relatively rotatable upper sleeve body and the lower sleeve body, the rotation of the lower sleeve body is limited by the gravity of the powder material itself, so as to preload the torsion spring through the rotation of the upper sleeve body , the bag body is retracted and retracted by the pre-tightening force;

2. The upper bag body, the rectangular frame and the lower bag body form a closed charging space, so that the wind can be collected by the air pressure. The tension is released through the wire rope, and the rectangular frame is pulled up to form a downward slope from the periphery of the loading space to the center. The powder materials in the material space are all cleaned up, so that there is no residue in the collection. When the traditional wind feeding method is used for collection, there are often 10%-30% residues, which need to be cleaned manually. The technical solution of the present application achieves almost no residue. residue.

3. Since the bag body is lifted up by wind pressure to form a slope, the efficiency of material collection is greatly improved. After practical application, the same or similar technical effects have been achieved. Taking 60 tons of alumina powder as an example, it takes more than 80- It takes 90 minutes to complete the unloading, and the time for collecting the material through the dynamic airbag aggregation and collecting device of the present application is 20-25 minutes, which greatly improves the efficiency of unloading, compresses the time for unloading, and saves the cost of unloading;

4. Only one material port is set on the top of the box, taking into account both loading and unloading;

5. The discharge pipeline is disassembled and does not need to be transported with the vehicle, and it does not need to be fixed on the discharge port all the time, which also avoids the risk of blockage of the discharge pipeline during transportation.

The applicant also needs to point out that the above-mentioned point of this application is only an embodiment, and is not intended to limit the protection scope of this application. All technical solutions belong to the protection scope of this application.

Claims (9)

1. An elastic aggregate material receiving device, comprising a box body (1), characterized in that the box body (1) is a hollow structure, and a rectangular frame (8) that slides up and down along the height direction is arranged in the box body (1) , an upper bag body (9a) is arranged between the upper part of the rectangular frame (8) and the inner wall of the top plate of the box body, the upper edge of the upper bag body (9a) is sealed and connected with the inner wall of the box body top plate, and the lower edge of the upper bag body (9a) is connected to the inner wall of the box body top plate. The rectangular frame (8) is sealed and connected, a lower bag body (9b) is suspended from the lower part of the rectangular frame (8), and the lower bag body (9b) is a hollow structure with an upper opening, and the upper opening of the lower bag body (9b) is sealed and connected to the lower part of the rectangular frame (8). The bag body (9a), the rectangular frame (8) and the lower bag body (9b) together form a charging space (9), and the center of the top plate of the box where the charging space (9) is located is provided with a material opening (1a) that penetrates the inside and outside ), a drive sleeve (2) is inserted and rotated on the material port (1a), the center of the drive sleeve (2) is provided with a feed channel (2a) that runs through up and down, and the lower end of the drive sleeve (2) extends into the material along the material port. In the space (9), the outer wall of the drive sleeve of the protruding part is fixedly connected with an upper sleeve body (4) extending in a direction away from the axis, and the lower part of the upper sleeve body (4) is sleeved with a relatively rotating lower sleeve body (5) , the inner edge of the lower sleeve body (5) is separated from the drive sleeve, the outer wall of the lower sleeve body (5) is provided with a wire winding groove (5a), and the upper sleeve body (4) and the lower sleeve body (5) The torsion spring (6) for storing or releasing the torque between the upper and lower sleeve bodies, inside the upper bag body (9a), is connected with a wire rope (12) at the four corners of the rectangular frame (8), and the lower end of the wire rope (12) is connected to the rectangular The frames are fixed together, the upper end of the wire rope (12) goes around the one-to-one corresponding fixed pulleys (11) and then is wound into the winding groove (5a) on the outer wall of the lower casing. There is a limit pipe (13) protruding upward, a ratchet (3) is fixed on the outer wall of the drive sleeve (2) extending out of the material port, and a ratchet (3) is rotated on the inner wall of the limit pipe (13). The corresponding pawl (7) constitutes a one-way rotation structure of the drive sleeve. 2 . The elastic polymer receiving device according to claim 1 , wherein the drive sleeve ( 2 ) comprises a drive sleeve body ( 21 ) and a limit top plate fixedly connected to the top outer wall of the drive sleeve body. 3 . (22), the main body (21) of the drive sleeve is inserted into the charging space (9) along the material opening (1a), and the upper sleeve body (4) is fixed together with the outer wall of the main body of the driving sleeve extending into the part of the charging space. 3 . The elastic polymer material receiving device according to claim 2 , wherein a rotating handle ( 18 ) extending upward is fixed on the limiting top plate ( 22 ). 4 . 4. The elastic aggregate material receiving device according to claim 1, characterized in that a vertically arranged rotating shaft (71) is fixed between the inner wall of the limit pipe (13) and the ratchet (3), and the ratchet ( 7) It is rotatably connected to the rotating shaft (71), and one side of the pawl (7) is provided with a limit block (72) fixed on the drive sleeve. 5 . The elastic aggregate receiving device according to claim 1 , wherein the four corners of the rectangular frame ( 8 ) are provided with rollers ( 17 ) that roll in the vertical direction, and the two sides of the box body ( 1 ) are provided with rollers ( 17 ). The inner wall of the bag is provided with a track (15) arranged in the vertical direction, and the roller is placed in the track and slides up and down along its length direction to form a guide structure that slides up and down around the lower bag body. 6 . The elastic polymer receiving device according to claim 1 , wherein a sealing cover ( 14 ) for sealing the upper opening of the limiting pipe ( 13 ) is screwed on the upper opening. 7 . 7 . The elastic polymer receiving device according to claim 1 , wherein a feeding pipeline ( 16 ) extending into the charging space ( 9 ) is inserted in the center of the feeding channel ( 2 a ), and feeding The end of the pipeline (16) extending out of the box body is provided with an exhaust fan. 8. The elastic aggregate material receiving device according to claim 1, characterized in that, the height of the lower limit position of the rectangular frame (8) is 1/3 of the total height of the inner cavity of the box, and the upper limit of the rectangular frame (8) is The height of the position is 2/3 of the total height of the box cavity. 9. A powder material dynamic discharging method adopting the elastic aggregate receiving device of claim 1 is characterized in that, comprising the following steps: 1. Loading Load the powder material (10) from the material channel (2a) in the center of the drive sleeve (2) into the charging space (9), and then install the sealing cover (14) matching the upper opening of the limit pipe (13) for sealing, complete the loading; Second, the torsion spring preload After the box body is transported to the destination, open the sealing cover (14), rotate the drive sleeve (2) clockwise, and drive the upper sleeve body (4) to rotate clockwise. Due to the heavy weight of the powder material (10), the steel wire rope is pressed tightly, causing the down The sleeve body (5) cannot be rotated, so the torsion spring between the upper and lower sleeve bodies is pre-tightened during the rotation of the upper sleeve body, and finally the ratchet wheel is caught by the pawl, so that the upper sleeve body (4) cannot be counterclockwise. Rotate to release the pre-tightening force of the torsion spring to complete the pre-tightening of the torsion spring; 3. Unloading Insert the feeding pipeline (16) into the charging space (9) from the feeding channel (2a) in the center of the drive sleeve (2), and start the exhaust fan on the feeding pipeline (9) at the same time. The powder material is formed in the negative pressure tumbling, and finally sent out from the lower port of the feeding pipeline (9) under the action of negative pressure. A groove, at the same time, the feeding pipeline is continuously moved downward during the discharging process. As the groove increases, the surrounding powder materials continue to concentrate in the middle. Because the thickness of the surrounding powder materials in the vertical direction continues to shrink, that is, the surrounding The weight of the powder material decreases continuously, and the elastic pre-tightening force of the torsion spring is released through the wire rope, which drives the lower casing to rotate, and drives the wire rope to continuously rotate and wind in the winding groove (5a) of the lower casing, pulling the rectangular frame upward, and finally The surrounding lower bag body is lifted up under the traction of the rectangular frame, so that a downward slope is formed from the surrounding of the charging space to the center, and the powder material is continuously concentrated to the center along the slope and sent out from the lower port of the feeding pipeline. Therefore, all the powder materials in the charging cavity are cleaned up, so that there is no residue in the receiving material.

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