A pa6 polymer filtering device

Abstract

The utility model relates to polymer filtering technical field, concretely is a kind of PA6 polymer filtering device, including shell and end cap, the shell is provided with filter cartridge, the inner peripheral wall of filter cartridge is slidably connected with movable ring, the movable ring is provided with feeding mechanism, the movable ring is equipped with annular cavity, the outer peripheral wall of movable ring is provided with multiple blowholes with annular cavity intercommunication. This PA6 polymer filtering device, the inside of filter cartridge is provided with the movable ring of slidable, by the up and down movement of movable ring, material can be extruded, improve filtering efficiency, the inside of movable ring is provided with annular cavity and blowhole, can in the process of movable ring up and down movement, by air pressure, the mesh of filter cartridge is cleared, increase the use time of filter screen, improve the efficiency of filtration.

Description

Technical Field

[0001] This utility model relates to the field of polymer filtration technology, specifically to a PA6 polymer filtration device. Background Technology

[0002] PA6 is a polymer compound formed by the polymerization of caprolactam. The production process of PA6 requires a polymerization reaction. After the polymer is discharged from the polymerization reactor, it needs to be filtered using a polymer filter. Currently, at least two sets of polymer filters are required on PA6 production lines. When one set becomes clogged, it is shut down and the other set of filters is activated. Subsequently, the filter screens are cleaned or replaced.

[0003] Existing polymer filters have some shortcomings in use. First, using multiple sets of filters alternately does not fundamentally solve the problem of filter clogging. Filter clogging, cleaning, and replacement increase labor costs and shorten filter lifespan. Furthermore, filter clogging also reduces filtration efficiency. Therefore, we propose a PA6 polymer filtration device. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a PA6 polymer filtration device that solves the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A PA polymer filtration device includes a housing and an end cap. A filter cylinder is disposed inside the housing. A movable ring is slidably connected to the inner peripheral wall of the filter cylinder. A feeding mechanism is disposed inside the movable ring. An annular cavity is provided inside the movable ring. A plurality of air blowing holes communicating with the annular cavity are opened on the outer peripheral wall of the movable ring.

[0007] Furthermore, an air intake pipe is fixedly connected to the movable ring, one end of which communicates with the annular cavity, and the other end of which slides through the end cap.

[0008] Furthermore, a groove is provided on the outer periphery of the movable ring, and a guide rod is fixedly connected to the inner peripheral wall of the filter cylinder, with the inner wall of the groove slidably connected to the surface of the guide rod.

[0009] Furthermore, clamps are connected to the two opposite inner walls of the groove by springs, and the two clamps are respectively attached to the two sides of the guide rod.

[0010] Furthermore, the feeding mechanism includes a three-way solenoid valve, which is installed inside the movable ring. The input end of the three-way solenoid valve is connected to a feeding pipe, and one end of the feeding pipe slides through the end cap.

[0011] Furthermore, both ends of the movable ring are fixedly connected to sealing plates, and both output ends of the three-way solenoid valve are connected to output pipes, with the opposite ends of the two output pipes passing through the two sealing plates respectively.

[0012] Furthermore, it also includes a pressure relief pipe, which is used to relieve pressure on the gas between the housing and the filter cartridge.

[0013] By employing the above technical solution, this utility model provides a PA6 polymer filtration device. It possesses at least the following beneficial effects:

[0014] (1) The PA6 polymer filter device has a sliding movable ring inside the filter cylinder. By moving the movable ring up and down, the material can be squeezed to improve the filtration efficiency. An annular cavity and an air blowing hole are set inside the movable ring. During the up and down movement of the movable ring, the mesh of the filter cylinder can be cleared by air pressure, which increases the service time of the filter screen and improves the filtration efficiency.

[0015] (2) The PA6 polymer filter device sets the feeding mechanism on the moving ring, so that the feeding mechanism can reciprocate in the filter cylinder with the moving ring, thereby making the material come into contact with different filter holes, reducing the clogging of the filter holes and ensuring the filtration effect.

[0016] (3) The PA6 polymer filter device changes the material feeding direction, so that the material can automatically push the moving ring to move in different directions during the feeding process, so that the sliding cleaning mechanism can automatically clean the filter holes at different positions. The structure is simple and the operation is convenient. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the filter cylinder in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the movable ring in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the spring and clamping plate in an embodiment of this utility model;

[0022] Figure 5 This is a schematic diagram of the feeding mechanism in an embodiment of the present invention.

[0023] In the diagram: 1. Housing; 2. End cap; 3. Filter cartridge; 4. Sliding cleaning mechanism; 401. Moving ring; 402. Air blowing hole; 403. Sealing plate; 404. Air inlet pipe; 405. Clamping plate; 406. Spring; 407. Groove; 5. Feeding mechanism; 501. Solenoid valve; 502. Feeding pipe; 503. Output pipe; 6. Pressure relief pipe; 7. Guide rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5 The present invention provides a technical solution as follows:

[0026] A PA6 polymer filtration device includes a housing 1, which is closed at the bottom and open at the top. An end cap 2 is detachably provided at the top of the housing 1 for sealing the interior. A filter cartridge 3 is disposed inside the housing 1. After a period of use, the filter pores of the filter cartridge 3 become clogged. To mitigate this phenomenon, a sliding cleaning mechanism 4 is provided inside the filter cartridge 3 in this embodiment, which can clean the filter pores without stopping the filtration device during operation, ensuring the filtration effect.

[0027] Specifically, the sliding cleaning mechanism 4 includes a movable ring 401, which is slidably connected to the inner wall of the filter cylinder 3. The movable ring 401 is annular and can move along the axis of the filter cylinder 3. An annular cavity is provided inside the movable ring 401, and multiple air holes 402 communicating with the annular cavity are opened on the outer peripheral wall of the movable ring 401. The diameter of the air holes 402 is smaller than the diameter of the filter holes in the filter cylinder 3. An air inlet pipe 404 is fixedly connected to the movable ring 401, and one end of the air inlet pipe 404 communicates with the annular cavity. The other end of 4 slides through the end cap 2 and is connected to the external air supply equipment. The air inlet pipe 404 is sealed to the end cap 2 to prevent material leakage. When the filter device is working, gas is introduced into the air inlet pipe 404 through the external air supply equipment. The gas enters the annular cavity through the air inlet pipe 404, which increases the air pressure in the annular cavity. Then, the gas is blown out through the air blowing hole 402. Since the air blowing hole 402 has a small diameter, the gas will be accelerated when it passes through. The accelerated high-pressure gas can clean the filter holes of the filter cylinder 3.

[0028] In a preferred embodiment, the PA6 polymer filter device further includes a pressure relief pipe 6, which is fixedly installed on the housing 1 or the end cap 2. One end of the pressure relief pipe 6 is inserted into the area between the housing 1 and the filter cartridge 3 to relieve the pressure of the gas between the housing 1 and the filter cartridge 3, so as to avoid excessive gas pressure in this area, which would cause filtration difficulties.

[0029] Combination Figure 3 and Figure 4 As shown, a groove 407 is provided on the outer periphery of the movable ring 401. A guide rod 7 is fixedly connected to the inner peripheral wall of the filter cylinder 3. The inner wall of the groove 407 is slidably connected to the surface of the guide rod 7. There are at least two grooves 407 and guide rods 7, which are used to limit the movable ring 401. A clamping plate 405 is connected to the two opposite inner walls of the groove 407 by a spring 406. The two clamping plates 405 are respectively attached to the two sides of the guide rod 7. There are multiple springs 406 on each clamping plate 405. The multiple springs 406 are distributed at equal intervals in a straight line along the length of the clamping plate 405. The springs 406 apply elastic force to the clamping plate 405, increasing the friction between the clamping plate 405 and the guide rod 7. The friction overcomes the gravity of the movable ring 401 and its internal structure, so that the movable ring 401 can remain relatively stationary with the filter cylinder 3 when the filter device is not working.

[0030] Please see Figure 5 The movable ring 401 is equipped with a feeding mechanism 5 for adding materials into the filtration device. The feeding mechanism 5 includes a three-way solenoid valve 501, which is installed inside the movable ring 401. The input end of the three-way solenoid valve 501 is connected to a feeding pipe 502. One end of the feeding pipe 502 slides through the end cover 2, and the feeding pipe 502 and the end cover 2 are sealed to prevent material leakage. The end of the feeding pipe 502 away from the three-way solenoid valve 501 extends outward from the end cover 2 for adding materials into the device. The feeding pipe 502 has a certain length to accommodate the up and down movement of the movable ring 401.

[0031] It is worth noting that both ends of the movable ring 401 are fixedly connected to sealing plates 403 to seal the internal space of the movable ring 401 and prevent materials from entering the movable ring 401. Both output ends of the three-way solenoid valve 501 are connected to output pipes 503. The opposite ends of the two output pipes 503 pass through the two sealing plates 403 respectively. Through the three-way solenoid valve 501, the material can be controlled to be discharged from one of the output pipes 503, thereby controlling the material to enter the filter cartridge 3 from above or below the movable ring 401.

[0032] In use, the PA6 polymer filter of this invention first closes the lower output pipe 503 and opens the upper output pipe 503 via the three-way solenoid valve 501. Material is added to the device through the feed pipe 502 and discharged through the top of the three-way solenoid valve 501 and the output pipe 503. The discharged material accumulates on the sealing plate 403 above the movable ring 401, which moves downwards under gravity. Due to the elasticity of the spring 406, the clamping plate 405 clamps the guide rod 7, increasing the resistance to the downward movement of the movable ring 401 and slowing its downward speed. During the movement of the movable ring 401, the air holes 402 on its surface align with different parts of the filter cylinder 3. The air inlet pipe 404 continuously adds gas to the annular cavity inside the movable ring 401, increasing the internal pressure. The gas is then blown out through the air outlet 402. Due to the small diameter of the air outlet 402, the gas is accelerated as it passes through, and the accelerated high-pressure gas cleans the filter pores of the filter cartridge 3. As the movable ring 401 moves downward, it cleans different parts of the filter cartridge 3. After the gas is discharged outside the filter cartridge 3, it is released through the pressure relief pipe 6 to prevent excessive pressure between the housing 1 and the filter cartridge 3, which could cause filtration difficulties.

[0033] When the movable ring 401 moves to the bottom of the filter cylinder 3, the lower output pipe 503 is opened and the upper output pipe 503 is closed by the three-way solenoid valve 501. At this time, the feed is discharged from the bottom of the movable ring 401. The discharged material accumulates at the bottom of the movable ring 401 and pushes the movable ring 401 upward, causing it to move upward. The movable ring 401 squeezes the unfiltered material at the top, increasing the pressure between the materials and accelerating the filtration speed. During the upward movement of the movable ring 401, air continuously blows air onto the filter holes on the surface of the filter cylinder 3, clearing blockages through air pressure. This achieves self-cleaning of the filter cylinder 3 without stopping the machine, ensuring the filtration effect.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PA6 polymer filter device, comprising a housing (1) and end caps (2), characterized in that, The housing (1) is provided with a filter cylinder (3), and a movable ring (401) is slidably connected to the inner peripheral wall of the filter cylinder (3). A feeding mechanism (5) is provided in the movable ring (401). An annular cavity is provided in the movable ring (401), and multiple air blowing holes (402) communicating with the annular cavity are opened on the outer peripheral wall of the movable ring (401).

2. The PA6 polymer filtration device according to claim 1, characterized in that, An air inlet pipe (404) is fixedly connected to the movable ring (401). One end of the air inlet pipe (404) is connected to the annular cavity, and the other end of the air inlet pipe (404) slides through the end cap (2).

3. The PA6 polymer filtration device according to claim 1, characterized in that, The outer periphery of the movable ring (401) is provided with a groove (407), and a guide rod (7) is fixedly connected to the inner periphery of the filter cylinder (3). The inner wall of the groove (407) is slidably connected to the surface of the guide rod (7).

4. The PA6 polymer filtration device according to claim 3, characterized in that, The groove (407) has two opposing inner walls connected by springs (406) with clamps (405), and the two clamps (405) are respectively attached to the two sides of the guide rod (7).

5. The PA6 polymer filtration device according to claim 1, characterized in that, The feeding mechanism (5) includes a three-way solenoid valve (501), which is installed inside the movable ring (401). The input end of the three-way solenoid valve (501) is connected to a feed pipe (502), and one end of the feed pipe (502) slides through the end cap (2).

6. The PA6 polymer filtration device according to claim 5, characterized in that, Both ends of the movable ring (401) are fixedly connected to sealing plates (403), and both output ends of the three-way solenoid valve (501) are connected to output pipes (503). The opposite ends of the two output pipes (503) pass through the two sealing plates (403) respectively.

7. The PA6 polymer filtration device according to claim 1, characterized in that, It also includes a pressure relief pipe (6) for relieving pressure on the gas between the housing (1) and the filter cylinder (3).

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