A high viscosity aramid pulp filter

Abstract

The utility model discloses a kind of high sticky aramid pulp filters, it is related to filtering technical field, including filter shell, filter shell inside is provided with filter core, quick-release assembly is clamped on filter core, quick-release assembly includes filter head, filter head is clamped on filter shell upper end, filter head inside is provided with flower board, filter core is clamped on flower board upper end, and the position of protruding of filter head two sides is provided with connecting bolt, and connecting thread is passed through filter head and is connected with filter outer thread connection.This utility model when filter core in filter inside is ineffective due to pulp adhesion, impurity blockage, the connecting bolt of filter plate head two sides setting is removed, after removal, filter head is pulled out filter shell inside, simultaneously, since filter head is fixedly connected with flower board, filter core can be directly taken out after filter head is removed, reduce the damage of filter core due to improper operation, improve the efficiency of filter core replacement simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of filtration technology, and in particular to a high-viscosity aramid slurry filter. Background Technology

[0002] In the spinning process of polymers, filters are often used to remove impurities or gel particles from the slurry in order to improve the spinning performance of the melt or slurry, extend equipment life, increase output, and ensure product quality.

[0003] Existing filters typically use a single unit. However, during the filtration of high-viscosity aramid slurry, the filter element is prone to failure due to slurry adhesion and impurity clogging, requiring frequent replacement to maintain filtration accuracy. However, existing filters require complete disassembly, impacting replacement efficiency. Furthermore, disassembly increases the difficulty of seal alignment during reassembly and accelerates seal wear. Therefore, a new...

[0004] A high-viscosity aramid slurry filter. Utility Model Content

[0005] The purpose of this invention is to solve the problems of existing filters that require complete disassembly during disassembly, which affects the efficiency of replacement. Furthermore, disassembly and reinstallation increases the difficulty of seal alignment and accelerates the wear of seals. Therefore, this invention proposes a high-viscosity aramid slurry filter.

[0006] To address the problems existing in the prior art, the present invention adopts the following technical solution:

[0007] A high-viscosity aramid slurry filter includes a filter housing, a filter element disposed inside the filter housing, and a quick-release assembly snapped onto the filter element;

[0008] The quick-release assembly includes a filter head, which is snapped onto the upper end of the filter housing. A perforated plate is provided inside the filter head, and the filter element is snapped onto the upper end of the perforated plate. The filter elements are arranged in a circular array around the axis of the perforated plate. Connecting bolts are provided at the protruding positions on both sides of the filter head, and the connecting threads penetrate the filter head and are threadedly connected to the filter housing.

[0009] Preferably, a connector is provided at the connection between the filter head and the tube sheet, and the connector and the tube sheet are on the same horizontal plane.

[0010] Preferably, an upper gasket for the filter chamber is provided between the upper end of the filter head and the filter housing, and a lower gasket for the filter chamber is provided between the bottom of the filter head and the filter housing.

[0011] Preferably, a lifting ring is provided at the upper end of the filter head near the center.

[0012] Preferably, a filter cylinder is fixedly disposed inside the filter housing, and the filter element is located inside the filter cylinder.

[0013] Preferably, a filter jacket is provided between the filter cylinder and the filter housing.

[0014] Preferably, the filter housing has an inlet and an outlet on both sides, and the inlet and outlet are equipped with a pressure gauge interface and a heat transfer medium inlet for the insulation jacket at the top. Additionally, a discharge port is provided at the bottom of the end closest to the inlet.

[0015] Preferably, an ear seat is provided on the outer wall of the filter housing near the center, and a nitrogen inlet is provided on the filter housing above the ear seat.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: When the filter element inside the filter fails due to slurry adhesion and impurity blockage, the connecting bolts on both sides of the filter plate end cap can be removed. After removal, the filter end cap can be pulled out of the filter housing. Since the filter end cap is fixedly connected to the tube sheet, the filter element can be directly removed after removing the filter end cap. There is no obstruction during cleaning and no jamming during replacement, which reduces filter element damage caused by improper operation, reduces consumable replacement costs, and improves the efficiency of filter element replacement. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

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

[0019] Figure 2 This is a schematic diagram of the quick-release component structure of this utility model;

[0020] Figure 3 This is a top view of the filter cylinder structure of this utility model;

[0021] Figure 4 This is a top view of the filter structure of this utility model.

[0022] In the diagram, the numbers represent: 1. Filter housing; 11. Inlet; 12. Outlet; 13. Nitrogen inlet; 14. Discharge outlet; 15. Heat transfer medium inlet of insulation jacket; 16. Lug; 2. Pressure gauge interface;

[0023] 3. Quick-release assembly; 31. Filter head; 32. Connecting bolts; 33. Tube plate; 34. Connecting parts; 35. Lower gasket of filter chamber; 36. Upper gasket of filter chamber; 37. Lifting ring;

[0024] 4. Filter element; 41. Filter housing; 42. Filter jacket. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example: This example provides a high-viscosity aramid slurry filter, see [link to example]. Figure 1-4 Specifically, it includes a filter housing 1, a filter element 4 is provided inside the filter housing 1, and a quick-release assembly 3 is snapped onto the filter element 4;

[0028] The quick-release assembly 3 includes a filter head 31, which is snapped onto the upper end of the filter housing 1. A perforated plate 33 is provided inside the filter head 31. The filter element 4 is snapped onto the upper end of the perforated plate 33 and is arranged in a ring array around the axis of the perforated plate 33. Connecting bolts 32 are provided at the protruding positions on both sides of the filter head 31, and the connecting threads pass through the filter head 31 and are threadedly connected to the filter housing 1.

[0029] In this optional embodiment, when the filter element inside the filter fails due to slurry adhesion and impurity blockage, the connecting bolts 32 on both sides of the filter plate end cap are removed. After removal, the filter end cap 31 is pulled out of the filter housing 1. Since the filter end cap 31 is fixedly connected to the tube sheet 33, the filter element 4 can be directly taken out after removing the filter end cap 31. There is no obstruction during cleaning and no jamming during replacement, which reduces damage to the filter element 4 due to improper operation, reduces the cost of consumable replacement, and improves the efficiency of filter element 4 replacement.

[0030] Optionally, a connector 34 is provided at the connection between the filter head 31 and the tube sheet 33, and the connector 34 and the tube sheet 33 are on the same horizontal plane;

[0031] In this optional embodiment, the filter head 31 is connected to the tube sheet 33 by the connector 34, ensuring that when the filter head 31 is disassembled, the tube sheet 33 and the filter element 4 clipped to the bottom of the tube sheet 33 can be pulled out at the same time. Since the core characteristics of high-viscosity aramid slurry are "high viscosity, poor fluidity, and easy adhesion and solidification", if there are protrusions or gaps around the connection between the tube sheet 33 and the filter head 31, dead zones of the flow field are easily formed, and the slurry will stagnate and solidify here. This will not only block the flow channel and reduce the filtration flow rate, but also form stubborn residues during subsequent cleaning, increasing the difficulty of maintenance. The connector 34 and the tube sheet 33 are on the same horizontal plane, avoiding gaps between the tube sheet 33 and the filter head 31, and reducing the difficulty of maintenance.

[0032] Optionally, an upper gasket 36 for the filter chamber is provided between the upper part of the filter head 31 and the filter housing 1, and a lower gasket 35 for the filter chamber is provided between the bottom of the filter head 31 and the filter housing.

[0033] In this optional embodiment, the joint between the upper extension of the filter head 31 and the outer shell is the path through which the slurry overflows upward under pressure. The upper gasket 36 of the filter chamber can fill the tiny gap here, forming the first sealing line to prevent the slurry from seeping out from the upper gap due to the increase in filtration pressure, thus preventing waste of raw materials and external contamination of the equipment. Secondly, the lower gasket 35 of the filter chamber is provided on the contact surface between the bottom of the filter head 31 and the outer shell, which can make the contact surfaces of the two fit tightly together, forming the second sealing line. Even if a small amount of slurry seeps in, the gasket can block its further penetration, preventing the slurry from entering other parts inside the equipment.

[0034] Optionally, a lifting ring 37 is provided at the upper end of the filter head 31 near the center;

[0035] In this optional embodiment, by setting a lifting ring 37 at the upper end of the filter head 31, the entire unit can be easily lifted and moved by simply hooking the lifting ring 37 with a lifting tool, which greatly reduces the physical exertion of the operator. At the same time, since the filter head 31 has a circular structure, the center is its force balance point. With the lifting ring 37 installed in the center, the pulling force can be evenly transmitted to the entire head during lifting, avoiding the instability of the lifting due to excessive local stress on the head caused by the offset of the lifting point.

[0036] Optionally, a filter housing 41 is fixedly installed inside the filter housing 1, and the filter element is located inside the filter housing 41.

[0037] In this optional embodiment, when the high-viscosity slurry enters the filter, it needs to flow into the annular cavity between the outer shell and the cylinder through the feed inlet 11 first, and then slowly enter the cylinder through the preset flow holes on the wall of the filter cylinder 41 to contact the filter element instead of directly impacting the surface of the filter element. This secondary flow can greatly reduce the impact pressure of the slurry, avoid the filter element from being deformed or damaged due to long-term impact, or the filter element skeleton from bending, and directly extend the replacement cycle of the filter element.

[0038] Optionally, a filter jacket 42 is provided between the filter cylinder 41 and the filter housing 1;

[0039] In this optional embodiment, the filter housing is in direct contact with the external environment, while the filter cylinder 41 is the core component that carries the filter element and the medium. The jacket can form a buffer protective layer between the two. If the equipment is in a working condition with vibration or collision, the jacket can absorb some of the external impact through its own structure, avoid the cylinder from being directly subjected to force and causing deformation, and protect the sealing and filtration accuracy of the internal filter element.

[0040] Optionally, the filter housing 1 has an inlet 11 and an outlet 12 on both sides, and the inlet 11 and the outlet 12 are both equipped with a pressure gauge interface 2 and a heat transfer medium inlet 15. Additionally, a discharge port 14 is provided at the bottom of the end closest to the inlet 11.

[0041] In this optional embodiment, the slurry is filtered through the inlet 11 and outlet 12 located on both sides. Pressure gauges are internally connected to the pressure gauge interfaces 2 located at the upper ends of the inlet 11 and outlet 12. During normal filtration, the pressure difference between the inlet and outlet ends remains stable. If the filter element gradually becomes clogged due to trapped impurities, the pressure at the inlet end will increase, and the pressure at the outlet end will decrease, increasing the pressure difference. The pressure difference change can be visually read through the pressure gauges, reminding operators to replace the filter element 4 in a timely manner to avoid filter element rupture or excessive pressure on the outer shell due to excessive pressure difference. The heat transfer medium inlet 15 of the insulation jacket maintains the temperature of the inlet 11 and outlet 12 consistent with that inside the filter cylinder 41, ensuring the medium flows smoothly from "upstream conveying → filtration → downstream discharge". The entire process is stable and does not affect filtration efficiency or media quality. Secondly, the discharge port 14 at the bottom of the filter housing 1 will discharge unfiltered slurry inside the housing when the filter needs to be shut down for filter element replacement or maintenance. The discharge port 14 at the bottom can completely discharge the residual slurry by gravity. The discharged slurry can be recycled and reused, reducing material waste. At the same time, it prevents the residual slurry from deteriorating and clumping inside the housing, which would contaminate the slurry for the next filtration.

[0042] Optionally, an ear seat 16 is provided on the outer wall of the filter housing 1 near the center, and a nitrogen inlet 13 is provided on the filter housing 1 at the upper end of the ear seat 16;

[0043] In this optional embodiment, since the filter housing 1 itself has a certain weight and is filled with the slurry to be filtered during operation, the total weight is relatively large. By placing the ear seat 16 near the center, the center of gravity of the equipment can be basically aligned with the support point, avoiding uneven stress on the housing due to the offset of the support point, thus extending the service life of the equipment. At the same time, the support at the center can ensure that the filter is level after installation, avoiding misalignment of the internal filter element or blockage of the flow channel due to tilting. Nitrogen gas is then introduced into the filter housing 1 through the nitrogen inlet 13, which can gradually replace the air inside the housing, so that the filter element and the slurry are always in a nitrogen protective atmosphere to prevent the slurry from oxidizing, and at the same time prevent oxidation products from contaminating the filtered medium, thus ensuring the quality of the final product.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-viscosity aramid slurry filter, comprising a filter housing (1), characterized in that: The filter housing (1) is provided with a filter element (4) inside, and a quick-release assembly (3) is snapped onto the filter element (4). The quick-release assembly (3) includes a filter head (31), which is snapped onto the upper end of the filter housing (1). A perforated plate (33) is provided inside the filter head (31). The filter element (4) is snapped onto the upper end of the perforated plate (33). The filter elements (4) are arranged in a ring array around the axis of the perforated plate (33). Connecting bolts (32) are provided at the protruding positions on both sides of the filter head (31). The connecting bolts pass through the filter head (31) and are threadedly connected to the filter housing (1).

2. The high-viscosity aramid slurry filter according to claim 1, characterized in that: A connector (34) is provided at the connection between the filter head (31) and the tube sheet (33), and the connector (34) and the tube sheet (33) are on the same horizontal plane.

3. A high-viscosity aramid slurry filter according to claim 2, characterized in that: A filter chamber upper gasket (36) is provided between the upper part of the filter head (31) and the filter shell (1), and a filter chamber lower gasket (35) is provided between the bottom of the filter head (31) and the filter shell.

4. A high-viscosity aramid slurry filter according to claim 3, characterized in that: A lifting ring (37) is provided at the upper end of the filter head (31) near the center.

5. A high-viscosity aramid slurry filter according to claim 1, characterized in that: The filter housing (1) is fixedly provided with a filter cylinder (41), and the filter element is located inside the filter cylinder (41).

6. A high-viscosity aramid slurry filter according to claim 5, characterized in that: A filter jacket (42) is provided between the filter cylinder (41) and the filter housing (1).

7. A high-viscosity aramid slurry filter according to claim 1, characterized in that: The filter housing (1) has an inlet (11) and an outlet (12) on both sides. The inlet (11) and outlet (12) are both equipped with a pressure gauge interface (2) and a heat insulation jacket heat medium inlet (15) at the upper end. The bottom of the end near the inlet (11) is equipped with a discharge port (14).

8. A high-viscosity aramid slurry filter according to claim 1, characterized in that: The filter housing (1) has an ear seat (16) near the center of its outer wall, and a nitrogen inlet (13) is provided on the filter housing (1) above the ear seat (16).

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