Filling device for PVC color paste

Abstract

The utility model relates to a PVC color paste filling device which comprises a stirring box, a constant temperature box, a conveying hopper, a discharging pipe and a sealing block, a stirring mechanism is arranged in the stirring box, a rotating motor is arranged at the top of the stirring box, a liquid pumping mechanism is arranged on one side of the stirring box, an annular plate is arranged on the outer side wall of the sealing block in a sleeved mode, and a round pipe is fixedly connected to the bottom of the annular plate. A thread groove is formed in the inner side wall of the circular pipe; a thread is arranged on the outer side wall of the circular ring plate; a connecting block abuts against the bottom of the sealing block; a limiting column is fixedly connected to the top of the connecting block, a limiting block is fixedly connected to the top of the limiting column, and a sliding groove is formed in the bottom of the circular ring plate; a first annular groove is formed in the inner side wall of the sliding groove. The PVC color paste connecting device has the advantages that PVC color paste can enter a container without leakage, a worker can conveniently disassemble and assemble the connecting block on the device, and the worker can conveniently install the container on the device.

Description

Technical Field

[0001] This utility model relates to the field of PVC equipment technology, specifically to a filling device for PVC color paste. Background Technology

[0002] PVC color paste refers to the addition of a certain proportion of coloring pigments to PVC resin. After the color paste is prepared, it is added to the PVC resin and stirred to blend. PVC color paste is widely used for coloring various PVC products. PVC color paste has good color reproducibility, uniform coloring, fine pigment particles, and high coloring power, so it has a wide range of applications. After the PVC color paste is produced, it needs to be filled. However, current PVC color paste filling equipment not only has the problem of easy leakage, which can easily lead to resource waste, but may also fail to guarantee the activity of PVC color paste during filling.

[0003] To address these technical issues, existing technology CN220701414U provides a leak-proof PVC color paste filling device. This device involves connecting a connecting block to the filling container, then connecting a sealing block to the connecting block. A limiting block is inserted into a limiting groove, and the connecting block is rotated to lock the limiting block and groove in place. A silicone gasket is then used to seal the connection. PVC color paste is then introduced into the inlet of the device. The valve is then opened, allowing the PVC color paste to flow into the sealing block and connecting block, and subsequently into the container. This design effectively prevents PVC color paste leakage. Furthermore, by inserting a suction pipe into the PVC color paste and then driving a suction pump, the PVC color paste is further leaked. The C-color paste is drawn into the guide pipe and then flows into the mixing tank. The motor then drives the transmission rod, causing the mixing block to move and thoroughly mix the PVC color paste, preventing sedimentation. The baffle is then pulled out, and the PVC color paste flows into the constant temperature chamber. The heating wire is then activated, and the temperature control device is adjusted to maintain a constant temperature, preserving the activity of the PVC color paste. The paste then passes through a filter screen into the conveying hopper and then into the discharge port. The connecting block and the container are then installed, followed by the sealing block. Finally, the valve is opened to allow the PVC color paste to be filled. This process maintains the activity of the PVC color paste and improves its coloring power.

[0004] However, certain technical problems may arise during its use. For example, when connecting the sealing block and the connecting block, the sealing block needs to be rotated to allow the limiting block to rotate and install within the limiting groove. Then, a silicone gasket is used to seal the connection. This requires the operator to apply upward force to squeeze the silicone gasket while rotating the sealing block, so that the limiting block can rotate and install within the limiting groove, thus achieving a sealing effect at the connection. To separate the sealing block from the connecting block, the operator also needs to apply upward force to squeeze the silicone gasket while rotating the sealing block in the opposite direction. The coupling of rotation and axial force can easily increase the complexity of the operator's work, especially in space-constrained conditions. This may cause inconvenience for the operator when assembling and disassembling the connecting block on the device, making it difficult for the operator to install containers on the device. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a PVC color paste filling device that not only allows PVC color paste to enter the container without leakage, but also facilitates the installation and disassembly of the connecting blocks on the device by operators, making it convenient for operators to install the container on the device.

[0006] This utility model is achieved through the following technical solution: a filling device for PVC color paste is provided, comprising a mixing tank, a constant temperature chamber, a conveying hopper, a feeding pipe, and a sealing block arranged and fixedly connected from top to bottom. A mixing mechanism is installed inside the mixing tank, and a rotary motor is installed at the top of the mixing tank to rotate the mixing mechanism within the mixing tank. A liquid extraction mechanism is installed on one side of the mixing tank. An annular plate rotatably connected to the sealing block is fitted onto the outer wall of the sealing block. A circular tube coaxial with the sealing block is fixedly connected to the bottom of the annular plate. An annular plate fitted against the outer wall of the sealing block is installed inside the circular tube. A limiting groove is formed at the top of the annular plate, and a limiting groove is provided within the limiting groove. A limiting rod is fixedly connected to the outer wall of the sealing block. A threaded groove is formed on the inner wall of the circular tube. A thread is formed on the outer wall of the annular plate that is threaded to the threaded groove. A connecting block is abutted against the bottom of the sealing block. A limiting post is fixedly connected to the top of the connecting block. A limiting block is fixedly connected to the top of the limiting post. A sliding groove adapted to the limiting block is formed at the bottom of the annular plate. A first annular groove adapted to the limiting block is formed on the inner wall of the sliding groove. A second annular groove adapted to the limiting post is formed at the bottom of the annular plate. The second annular groove communicates with the first annular groove and the sliding groove respectively. The limiting block is located in the first annular groove, and the limiting post is located in the second annular groove.

[0007] In use, this utility model comprises a mixing tank, a constant temperature chamber, a conveying hopper, a feeding pipe, and a sealing block arranged and fixedly connected from top to bottom. The mixing tank contains a mixing mechanism, and a rotating motor is mounted on the top of the mixing tank to rotate the mixing mechanism within the tank. A liquid extraction mechanism is located on one side of the mixing tank. An annular plate, rotatably connected to the sealing block, is fitted onto the outer wall of the sealing block. A circular tube, coaxial with the sealing block, is fixedly connected to the bottom of the annular plate. An annular plate, fitted against the outer wall of the sealing block, is located inside the circular tube. A limiting groove is formed at the top of the annular plate, and a limiting rod, fixedly connected to the outer wall of the sealing block, is located within the limiting groove. A threaded groove is formed on the inner wall of the circular tube, and a threaded connection is provided on the outer wall of the annular plate to the threaded groove. The sealing block has a connecting block at its bottom, a limiting post fixed to its top, and a limiting block fixed to its top. The bottom of the annular plate has a sliding groove adapted to the limiting block, and the inner wall of the sliding groove has a first annular groove adapted to the limiting block. The bottom of the annular plate has a second annular groove adapted to the limiting post. The second annular groove communicates with both the first annular groove and the sliding groove. The limiting block is located in the first annular groove, and the limiting post is located in the second annular groove. When using the device, the operator must first start the pumping mechanism to draw the PVC pigment into the mixing tank, and then start the rotating motor to drive the mixing mechanism to rotate within the mixing tank, thereby stirring the PVC pigment that has entered the mixing tank. Its internal components are not prone to sedimentation. The PVC color paste from the mixing tank is then transferred to a constant temperature chamber for insulation, and then fed into the discharge pipe via a conveyor hopper. If the operator wants to fill the PVC color paste, they need to first control the circular tube to rotate forward, thereby causing the annular plate to rotate on the sealing block. This causes the threaded groove to rotate along with the annular plate on its threads. At this time, because the annular plate is relatively fixed to the sealing block by the limiting rod, it does not rotate with the circular tube. Instead, driven by the rotation of the threaded groove and threads, it moves downwards within the circular tube, causing the limiting rod to move within the limiting groove. Through the transmission of the limiting block and the limiting post, this drives the connecting block to move downwards as well, thus preventing the connecting block from contacting the sealing block. The process begins with controlling the connecting block to rotate forward, causing the limiting post and limiting block to move from the second and first annular grooves into the sliding groove, respectively. Then, controlling the connecting block to move downwards disengages the limiting block and limiting post from the sliding groove, facilitating the installation of the container onto the connecting block. After the container is installed, controlling the connecting block to move upwards causes the limiting block and limiting post to re-enter the sliding groove. Next, controlling the connecting block to rotate in the reverse direction causes the limiting post and limiting block to re-enter the second and first annular grooves, respectively. Finally, controlling the circular tube to rotate in the reverse direction causes the annular plate to rotate on the sealing block, causing the threaded groove to rotate along with the annular plate on the threaded surface of the annular plate.At this point, the annular plate is relatively fixed to the sealing block by the limiting rod. The annular plate does not rotate with the circular tube, but instead moves upward within the circular tube driven by the rotation of the threaded groove and threads. This causes the limiting rod to move within the limiting groove, which, through the transmission of the limiting block and limiting post, drives the connecting block to move upward as well. This causes the connecting block to re-abut against the sealing block, thus sealing the connection between them. Afterward, by opening the discharge pipe, the PVC pigment paste flows into the container leak-free through the sealing block and connecting block. This not only ensures leak-free entry of the PVC pigment paste into the container but also facilitates the installation and removal of the connecting block on the device, making container installation easier for the operator.

[0008] Preferably, both the sealing block and the bottom of the circular tube are fixedly connected to a silicone pad that abuts against the top of the connecting block. By fixing silicone pads to both the sealing block and the bottom of the circular tube that abut against the top of the connecting block, the stability between the sealing block and the connecting block can be improved during use.

[0009] Preferably, the stirring mechanism includes a transmission rod disposed within a stirring tank and a stirring block mounted on the transmission rod. The transmission rod extends vertically upward through the stirring tank and is coaxially fixed to the output shaft of the rotating motor. When the device is in use, the rotating motor is turned on, causing the output shaft of the rotating motor to drive the transmission rod to rotate within the stirring tank. This causes the stirring block to rotate along with the transmission rod within the stirring tank, thereby stirring the PVC pigment entering the stirring tank and preventing its internal components from settling.

[0010] Preferably, the liquid extraction mechanism includes a liquid extraction pump fixedly installed on the outer wall of the mixing tank. The input end of the liquid extraction pump is provided with a liquid extraction pipe, and the output end of the liquid extraction pump is provided with a guide pipe communicating with the interior of the mixing tank. In use, by turning on the liquid extraction pump, PVC pigment is transported from the liquid extraction pipe to the guide pipe, and then enters the mixing tank from the guide pipe.

[0011] Preferably, the constant temperature chamber is equipped with a heating wire inside, and a temperature control device electrically connected to the heating wire is fixedly installed on the outer wall of the constant temperature chamber. By installing a heating wire inside the constant temperature chamber and fixing a temperature control device electrically connected to the heating wire on the outer wall of the constant temperature chamber, the heating wire is kept at a constant temperature, thereby maintaining the temperature of the constant temperature chamber and keeping the PVC pigment paste entering the constant temperature chamber warm.

[0012] Preferably, a filter screen is provided on the inner wall of the conveying hopper, located below the heating wire. By providing a filter screen on the inner wall of the conveying hopper, PVC pigment paste can be filtered for particles.

[0013] Preferably, a valve is installed on the outer wall of the feeding pipe. By installing a valve on the outer wall of the feeding pipe, operators can easily open or close the feeding pipe.

[0014] Preferably, a through groove is formed on the outer wall of the mixing tank, and a baffle located below the mixing mechanism is slidably connected within the through groove. By forming a through groove on the outer wall of the mixing tank and slidably connecting the baffle located below the mixing mechanism within the through groove, the device can open or close the channel between the constant temperature chamber and the mixing tank by dragging the baffle within the through groove during use. This facilitates the operator in mixing the PVC pigment entering the mixing tank, and after mixing, controls the baffle to open the channel between the constant temperature chamber and the mixing tank, allowing the mixed PVC pigment to enter the constant temperature chamber.

[0015] The beneficial effects of this utility model are as follows: A mixing tank, a constant temperature chamber, a conveying hopper, a feeding pipe, and a sealing block are arranged and fixedly connected from top to bottom. The mixing tank contains a mixing mechanism, and a rotating motor is installed at the top of the mixing tank to rotate the mixing mechanism within the mixing tank. A liquid extraction mechanism is installed on one side of the mixing tank. An annular plate, rotatably connected to the sealing block, is fitted onto the outer wall of the sealing block. A circular tube, coaxial with the sealing block, is fixedly connected to the bottom of the annular plate. An annular plate, fitted against the outer wall of the sealing block, is installed inside the circular tube. A limiting groove is formed at the top of the annular plate, and a limiting rod, fixedly connected to the outer wall of the sealing block, is installed within the limiting groove. A threaded groove is formed on the inner wall of the circular tube, and a threaded rod, threadedly connected to the threaded groove, is provided on the outer wall of the annular plate. The sealing block has a connecting block at its bottom, a limiting post fixed to its top, and a limiting block fixed to its top. The bottom of the annular plate has a sliding groove adapted to the limiting block, and the inner wall of the sliding groove has a first annular groove adapted to the limiting block. The bottom of the annular plate has a second annular groove adapted to the limiting post. The second annular groove communicates with both the first annular groove and the sliding groove. The limiting block is located in the first annular groove, and the limiting post is located in the second annular groove. When using the device, the operator must first start the pumping mechanism to draw the PVC pigment into the mixing tank, and then start the rotating motor to drive the mixing mechanism to rotate within the mixing tank, thereby stirring the PVC pigment that has entered the mixing tank. Its internal components are not prone to sedimentation. The PVC color paste from the mixing tank is then transferred to a constant temperature chamber for insulation, and then fed into the discharge pipe via a conveyor hopper. If the operator wants to fill the PVC color paste, they need to first control the circular tube to rotate forward, thereby causing the annular plate to rotate on the sealing block. This causes the threaded groove to rotate along with the annular plate on its threads. At this time, because the annular plate is relatively fixed to the sealing block by the limiting rod, it does not rotate with the circular tube. Instead, driven by the rotation of the threaded groove and threads, it moves downwards within the circular tube, causing the limiting rod to move within the limiting groove. Through the transmission of the limiting block and the limiting post, this drives the connecting block to move downwards as well, thus preventing the connecting block from contacting the sealing block. The process begins with controlling the connecting block to rotate forward, causing the limiting post and limiting block to move from the second and first annular grooves into the sliding groove, respectively. Then, controlling the connecting block to move downwards disengages the limiting block and limiting post from the sliding groove, facilitating the installation of the container onto the connecting block. After the container is installed, controlling the connecting block to move upwards causes the limiting block and limiting post to re-enter the sliding groove. Next, controlling the connecting block to rotate in the reverse direction causes the limiting post and limiting block to re-enter the second and first annular grooves, respectively. Finally, controlling the circular tube to rotate in the reverse direction causes the annular plate to rotate on the sealing block, causing the threaded groove to rotate along with the annular plate on the threaded surface of the annular plate.At this point, the annular plate is relatively fixed to the sealing block by the limiting rod. The annular plate does not rotate with the circular tube, but instead moves upward within the circular tube driven by the rotation of the threaded groove and threads. This causes the limiting rod to move within the limiting groove, which, through the transmission of the limiting block and limiting post, drives the connecting block to move upward as well. This causes the connecting block to re-abut against the sealing block, thus sealing the connection between them. Afterward, by opening the discharge pipe, the PVC pigment paste flows into the container leak-free through the sealing block and connecting block. This not only ensures leak-free entry of the PVC pigment paste into the container but also facilitates the installation and removal of the connecting block on the device, making container installation easier for the operator. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of part A in the middle;

[0018] Figure 3 This is a perspective view of the structure of this utility model;

[0019] Figure 4 for Figure 3 Schematic diagram of Part B in the middle section;

[0020] Figure 5 for Figure 4 Schematic diagram of the structure of part C;

[0021] Figure 6 for Figure 4 Sectional view of the structure 'aa' in the middle;

[0022] As shown in the figure:

[0023] 1. Guide pipe, 2. Liquid pump, 3. Liquid suction pipe, 4. Temperature control device, 5. Conveying hopper, 6. Valve, 7. Transmission rod, 8. Rotary motor, 9. Mixing box, 10. Baffle, 11. Constant temperature box, 12. Discharge pipe, 13. Annular plate, 14. Silicone pad, 15. Round tube, 16. Connecting block, 17. Filter screen, 18. Mixing block, 19. Through groove, 20. Heating wire, 21. Sealing block, 22. Limiting post, 23. Limiting block, 24. Limiting rod, 25. Threaded groove, 26. Thread, 27. Second annular groove, 28. Limiting groove, 29. First annular groove, 30. Circular plate, 31. Slide groove. Detailed Implementation

[0024] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to describe the solution.

[0025] like Figures 1-6The present invention discloses a filling device for PVC color paste, comprising, from top to bottom, a mixing tank 9, a constant temperature chamber 11, a conveying hopper 5, a feeding pipe 12, and a sealing block 21, which are arranged and fixedly connected. A mixing mechanism is installed inside the mixing tank 9, and a rotary motor 8 is installed at the top of the mixing tank 9 to rotate the mixing mechanism within the mixing tank 9. A liquid extraction mechanism is installed on one side of the mixing tank 9. An annular plate 13, rotatably connected to the sealing block 21, is fitted onto the outer wall of the sealing block 21. A circular tube 15, coaxial with the sealing block 21, is fixedly connected to the bottom of the annular plate 13. An annular plate 30, fitted against the outer wall of the sealing block 21, is installed inside the circular tube 15. A limiting groove 28 is formed at the top of the annular plate 30, and a limiting rod 2, fixedly connected to the outer wall of the sealing block 21, is installed within the limiting groove 28. 4. A threaded groove 25 is provided on the inner side wall of the circular tube 15, and a thread 26 is provided on the outer side wall of the annular plate 30 to be threadedly connected to the threaded groove 25. The bottom of the sealing block 21 abuts against the connecting block 16, and a limiting post 22 is fixedly connected to the top of the connecting block 16. A limiting block 23 is fixedly connected to the top of the limiting post 22. A sliding groove 31 adapted to the limiting block 23 is provided at the bottom of the annular plate 30. A first annular groove 29 adapted to the limiting block 23 is provided on the inner side wall of the sliding groove 31. A second annular groove 27 adapted to the limiting post 22 is provided at the bottom of the annular plate 30. The second annular groove 27 is connected to the first annular groove 29 and the sliding groove 31 respectively. The limiting block 23 is located in the first annular groove 29, and the limiting post 22 is located in the second annular groove 27.

[0026] By fixing silicone pads 14, which abut against the top of connecting block 16, to the bottom of both sealing block 21 and round tube 15, the stability between sealing block 21 and connecting block 16 can be improved during use. The stirring mechanism includes a transmission rod 7 disposed in the stirring tank 9 and a stirring block 18 mounted on the transmission rod 7. The transmission rod 7 extends vertically upward through the stirring tank 9 and is coaxially fixed to the output shaft of the rotating motor 8. When the device is in use, the rotating motor 8 is turned on, which causes the output shaft of the rotating motor 8 to drive the transmission rod 7 to rotate in the stirring tank 9, thereby causing the stirring block 18 to rotate with the transmission rod 7 in the stirring tank 9, thus stirring the PVC pigment entering the stirring tank 9 and preventing its internal components from settling. The liquid extraction mechanism includes a liquid extraction pump 2 fixedly installed on the outer wall of the mixing tank 9. The input end of the liquid extraction pump 2 is provided with a liquid extraction pipe 3, and the output end of the liquid extraction pump 2 is provided with a guide pipe 1 communicating with the inside of the mixing tank 9. In use, by turning on the liquid extraction pump 2, the PVC pigment is transported from the liquid extraction pipe 3 to the guide pipe 1, and then enters the mixing tank 9 from the guide pipe 1. An electric heating wire 20 is installed inside the constant temperature chamber 11, and a temperature control device 4 electrically connected to the electric heating wire 20 is fixedly installed on the outer wall of the constant temperature chamber 11. The temperature control device 4 keeps the electric heating wire 20 at a constant temperature, thus maintaining the temperature of the constant temperature chamber and keeping the PVC pigment entering the constant temperature chamber 11 warm. A filter screen 17 is installed on the inner wall of the conveying hopper 5, located below the electric heating wire 20, to filter the PVC pigment into particles. A valve 6 is installed on the outer wall of the discharge pipe 12, allowing operators to easily open or close the discharge pipe 12. A through groove 19 is provided on the outer wall of the mixing tank 9, and a baffle 10 located below the mixing mechanism is slidably connected within the through groove 19. During use, by dragging the baffle 10 within the through groove 19, the channel between the constant temperature chamber 11 and the mixing tank 9 can be opened or closed. This facilitates the mixing of the PVC pigment entering the mixing tank 9. After mixing, the baffle 10 is controlled to open the channel between the constant temperature chamber 11 and the mixing tank 9, allowing the mixed PVC pigment to enter the constant temperature chamber 11. The diameter of the limiting block 23 is larger than the diameter of the limiting post 22, which facilitates the insertion of the limiting block 23 and the limiting post 22 into the annular plate 30.

[0027] Combined with appendix Figure 1-6The method of using this utility model is as follows: First, the operator needs to turn on the pump 2 to transport the external PVC color paste through the pumping pipe 3 to the guide pipe 1, and then from the guide pipe 1 to the baffle 10 inside the mixing tank 9. Then, the operator starts the rotating motor 8, causing the output shaft of the rotating motor 8 to drive the transmission rod 7 to rotate inside the mixing tank 9. This causes the stirring block 18 to rotate with the transmission rod 7 inside the mixing tank 9, thereby stirring the PVC color paste entering the mixing tank 9 and preventing its internal components from settling. After stirring, the operator moves the baffle 10 in the channel 19 to open the channel between the constant temperature box 11 and the mixing tank 9, allowing the stirred PVC color paste to enter the constant temperature box 11 and be controlled by the temperature control device 4. Heating wire 20 is heated to maintain a constant temperature in the constant temperature chamber. The PVC color paste in mixing tank 9 is then transferred to constant temperature chamber 11 for insulation. The PVC color paste is then conveyed through conveyor hopper 5 into discharge pipe 12. During this process, the mixed PVC color paste passes through filter screen 17 for particle filtration. If the operator wants to fill the PVC color paste, they need to control the circular tube to rotate forward, thereby causing the annular plate 13 to rotate on the sealing block 21. This causes the threaded groove 25 to rotate along with the annular plate 13 on the thread 26 of the circular plate 30. At this time, because the circular plate 30 is relatively fixed to the sealing block 21 by the limiting rod 24, the circular plate 30 will not rotate with the circular tube, but will rotate on the threaded groove 25 and thread 26. Driven by rotation, the device moves downward within the circular tube, causing the limiting rod to move within the limiting groove 28. This, through the transmission of the limiting block 23 and the limiting post 22, drives the connecting block 16 downward as well, thus preventing the connecting block 16 from contacting the silicone gasket 14 on the sealing block 21. Then, by controlling the connecting block 16 to rotate forward, the limiting post 22 and the limiting block 23 move from the second annular groove 27 and the first annular groove 29 respectively into the sliding groove 31. Afterward, by controlling the connecting block 16 to move downward, the limiting block 23 and the limiting post 22 disengage from the sliding groove 31, facilitating the installation of the container on the connecting block 16. After the container is installed on the connecting block 16, by controlling the connecting block 16 to move upward, the container... The limiting block 23 and the limiting post 22 re-enter the slide groove 31. Then, by controlling the connecting block 16 to rotate in the opposite direction, the limiting post 22 and the limiting block 23, along with the connecting block 16, re-enter the second annular groove 27 and the first annular groove 29 respectively from the slide groove 31. Then, by controlling the circular tube to rotate in the opposite direction, the annular plate 13 rotates on the sealing block 21, causing the threaded groove 25 to rotate on the thread 26 of the annular plate 30 along with the annular plate 13. At this time, the annular plate 30 is kept relatively fixed to the sealing block 21 by the limiting rod 24. The annular plate 30 does not rotate with the circular tube, but moves upward in the circular tube under the rotation drive of the threaded groove 25 and the thread 26, and causes the limiting rod to move in the limiting groove 28.Through the transmission of the limiting block 23 and the limiting post 22, the connecting block 16 is also moved upward, causing the connecting block 16 to re-abut against the silicone gasket 14 on the sealing block 21, thus sealing the connection between the connecting block 16 and the sealing block 21. Then, the control valve 6 opens the discharge pipe 12, allowing the PVC pigment to enter the container leak-free through the sealing block 21 and the connecting block 16.

[0028] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A filling device for PVC color paste, comprising a mixing tank (9), a constant temperature chamber (11), a conveying hopper (5), a feeding pipe (12), and a sealing block (21) arranged and fixed from top to bottom, wherein a mixing mechanism is provided inside the mixing tank, a rotary motor (8) is provided on the top of the mixing tank to rotate the mixing mechanism inside the mixing tank, and a liquid pumping mechanism is provided on one side of the mixing tank, characterized in that: An annular plate (13) rotatably connected to the sealing block is fitted on the outer wall of the sealing block. A circular tube (15) coaxial with the sealing block is fixed to the bottom of the annular plate. An annular plate (30) fitted to the outer wall of the sealing block is provided inside the circular tube. A limiting groove (28) is opened at the top of the annular plate. A limiting rod (24) fixed to the outer wall of the sealing block is provided in the limiting groove. A threaded groove (25) is opened on the inner wall of the circular tube. A thread (26) threadedly connected to the threaded groove is provided on the outer wall of the annular plate. A connecting block (16) is abutted at the bottom. A limiting post (22) is fixedly connected to the top of the connecting block. A limiting block (23) is fixedly connected to the top of the limiting post. A sliding groove (31) adapted to the limiting block is opened at the bottom of the annular plate. A first annular groove (29) adapted to the limiting block is opened on the inner side wall of the sliding groove. A second annular groove (27) adapted to the limiting post is opened at the bottom of the annular plate. The second annular groove is connected to the first annular groove and the sliding groove respectively. The limiting block is located in the first annular groove and the limiting post is located in the second annular groove.

2. The filling device for PVC color paste according to claim 1, characterized in that: Both the sealing block and the bottom of the round tube are fixed with silicone pads (14) that abut against the top of the connecting block.

3. The filling device for PVC color paste according to claim 1, characterized in that: The stirring mechanism includes a transmission rod (7) disposed inside the stirring box and a stirring block (18) mounted on the transmission rod. The transmission rod extends vertically upward through the stirring box and is coaxially fixed to the output shaft of the rotating motor.

4. The filling device for PVC color paste according to claim 1, characterized in that: The pumping mechanism includes a pump (2) fixedly installed on the outer wall of the mixing tank. The pump has a pumping pipe (3) at its input end and a guide pipe (1) connected to the inside of the mixing tank at its output end.

5. The filling device for PVC color paste according to claim 4, characterized in that: The constant temperature chamber is equipped with an electric heating wire (20), and a temperature control device (4) electrically connected to the electric heating wire is fixedly installed on the outer wall of the constant temperature chamber.

6. The filling device for PVC color paste according to claim 4, characterized in that: A filter screen (17) is provided on the inner wall of the conveying hopper, located below the heating wire.

7. The filling device for PVC color paste according to claim 4, characterized in that: A valve (6) is installed on the outer wall of the feed pipe.

8. The filling device for PVC color paste according to claim 4, characterized in that: A through groove (19) is provided on the outer wall of the mixing tank, and a baffle (10) located below the mixing mechanism is slidably connected in the through groove.

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