A detachable filter cartridge structure for solid-liquid separation of chemical raw materials

Abstract

The utility model relates to a related technical field of chemical production especially relates to a detachable filter cartridge structure for solid-liquid separation of chemical raw materials, including inner support cylinder, the filter main part cylinder of setting up in the outer side of inner support cylinder and the quick release type assembly of connecting inner support cylinder and filter main part cylinder. The quick release type assembly includes end cover, sealing O type ring, recess, press ring, outer lug, inner lug and through -hole, the utility model discloses through quick release type assembly and realizes the quick replacement of filter main part cylinder through the thread end cover, need not complex tool, and single-time dismounting time shortens to 5 10 minutes, and the downtime is reduced, simultaneously, the axial displacement of filter main part cylinder is jointly restricted by bottom limit lug and press ring, prevents the filter material inflation or deviation under the pressure fluctuation, and the positioning of filter main part cylinder and inner support cylinder is accurately matched through outer positioning groove and inner limit lug, avoids the alignment deviation when dismounting, and further improves the maintenance convenience.

Description

Technical Field

[0001] This utility model relates to the technical field of chemical production, and in particular to a detachable filter cartridge structure for solid-liquid separation of chemical raw materials. Background Technology

[0002] In chemical production, solid-liquid separation is one of the key processes. Its purpose is to remove solid particulate impurities from raw materials or recover valuable solid products to ensure the efficiency of subsequent reactions or the purity of products. Currently, most solid-liquid separation filter cartridges commonly used in the industry adopt flange bolt connections or welded structures. When replacing filter media, multiple fasteners need to be disassembled, which is time-consuming. Therefore, there is a particular need for a detachable filter cartridge structure for solid-liquid separation of chemical raw materials. Utility Model Content

[0003] The purpose of this utility model is to provide a detachable filter cartridge structure for solid-liquid separation of chemical raw materials, so as to solve the problem of the existing detachable filter cartridge structure for solid-liquid separation of chemical raw materials mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a detachable filter cartridge structure for solid-liquid separation of chemical raw materials, including an inner support cylinder, a filter body cylinder sleeved on the outside of the inner support cylinder, and a quick-release assembly connecting the inner support cylinder and the filter body cylinder. The quick-release assembly includes an end cap, a sealing O-ring, a groove, a pressure ring, an outer lug, an inner lug, and a through hole. The end cap, sealing O-ring, and pressure ring are each provided in two sets, respectively installed at the upper and lower ends of the inner support cylinder. The sealing O-ring is embedded in the groove of the end cap to achieve a seal, and the two sets of end caps are respectively threaded to the upper and lower ends of the inner support cylinder. The pressure ring is located between the end cap and the filter body cylinder, and abuts against the inner support cylinder by cooperating with the outer lug and the inner lug. A through hole is opened at the center of each end cap.

[0005] Preferably, the inner support cylinder has filter holes distributed circumferentially, the inner side of the inner support cylinder is provided with guide ribs extending axially, the outer side of the inner support cylinder is provided with an outer positioning groove, and the inner support cylinder is provided with a bottom limiting protrusion near the bottom of the outer positioning groove.

[0006] Preferably, the inner side of the filter body cylinder is provided with an inner limiting protrusion that matches the outer positioning groove, and the bottom of the filter body cylinder abuts against a bottom limiting protrusion.

[0007] Preferably, the guide ribs are evenly distributed along the circumference of the inner support cylinder, with a quantity of three, and the height does not exceed the inner sidewall of the filter body cylinder.

[0008] Preferably, the inner limiting protrusion and the outer positioning groove are in clearance fit, with a fit clearance of - mm.

[0009] Preferably, the sealing O-ring is made of fluororubber, and its cross-sectional diameter is larger than the groove depth by %-%.

[0010] Preferably, the pressure ring abutting at the top of the filter body cylinder is installed by the cooperation of the outer protrusion and the outer positioning groove, and the pressure ring abutting at the bottom of the filter body cylinder is installed by the cooperation of the inner concave ear and the bottom limiting protrusion.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The quick-release assembly allows for rapid replacement of the filter body cylinder via threaded end caps, eliminating the need for complex tools and reducing single disassembly and assembly time to 5-10 minutes, thus minimizing downtime. Simultaneously, the bottom limiting protrusion and pressure ring jointly constrain the axial displacement of the filter body cylinder, preventing filter media from bulging or shifting under pressure fluctuations. The positioning of the filter body cylinder and the inner support cylinder is precisely achieved through the outer positioning groove and the inner limiting protrusion, avoiding alignment deviations during disassembly and assembly, further enhancing maintenance convenience. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the disassembly structure of the quick-release component of this utility model; Figure 3 This is a schematic diagram of the internal support cylinder of this utility model; Figure 4 This is a schematic diagram of the structure of the filter body cylinder of this utility model.

[0013] In the diagram: 1. Inner support cylinder; 101. Filter hole; 102. Guide rib; 103. Outer positioning groove; 104. Bottom limiting protrusion; 2. Filter body cylinder; 201. Inner limiting protrusion; 3. Quick-release assembly; 301. End cap; 302. Sealing O-ring; 303. Groove; 304. Pressure ring; 305. Outer lug; 306. Inner concave lug; 307. Through hole. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0015] Example like Figure 1 , 3As shown in Figure 4, the device includes an inner support cylinder 1, a filter body cylinder 2 sleeved on the outside of the inner support cylinder 1, and a quick-release assembly 3 connecting the inner support cylinder 1 and the filter body cylinder 2. The inner support cylinder 1 has filter holes 101 distributed circumferentially. The inner side of the inner support cylinder 1 is provided with a guide rib 102 extending axially. The outer side of the inner support cylinder 1 is provided with an outer positioning groove 103. The inner support cylinder 1 is provided with a bottom limiting protrusion 104 near the bottom of the outer positioning groove 103. The inner side of the filter body cylinder 2 is provided with an inner limiting protrusion 201 that matches the outer positioning groove 103. The bottom of the filter body cylinder 2 abuts against the bottom limiting protrusion 104.

[0016] It should be noted that in this embodiment, the inner support cylinder 1 is an axially continuous cylindrical structure made of 316L stainless steel, resistant to chemical corrosion, with a wall thickness of 3-5mm. Filter holes 101 are evenly distributed circumferentially along the inner support cylinder 1, and are circular holes with a diameter of 8mm. Three guide ribs 102 are located inside the inner support cylinder 1, extending axially, and are used to guide the material inside the cylinder to flow towards the filter holes 101. The filter body cylinder 2 uses composite filter media, the pore size of which is smaller than the filter holes of the inner support cylinder, ensuring that only liquids can pass through the filter media, while solids... The particles are trapped inside the filter media. The inner limiting protrusion 201 and the outer positioning groove 103 are fitted with a 0.2mm gap to fix the filter body cylinder 2 to the outside of the inner support cylinder 1. The bottom limiting protrusion 104 restricts the axial displacement of the filter body cylinder 2 to prevent the filter body cylinder 2 from sliding downward due to factors such as raw material pressure during the filtration process. During the assembly and disassembly of the filter body cylinder 2, the protrusion 104 serves as the stop point for its axial movement. At the same time, during the filtration operation, the protrusion 104 can bear part of the weight of the filter body cylinder 2 and the axial load caused by the filtration pressure.

[0017] like Figure 2 As shown, the quick-release assembly 3 includes an end cap 301, a sealing O-ring 302, a groove 303, a pressure ring 304, an outer lug 305, an inner lug 306, and a through hole 307. The end cap 301, the sealing O-ring 302, and the pressure ring 304 are each provided in two sets, which are respectively installed at the upper and lower ends of the inner support cylinder 1. The sealing O-ring 302 is embedded in the groove 303 of the end cap 301 to achieve a seal, and the two sets of end caps 301 are respectively threaded to the upper and lower ends of the inner support cylinder 1. The pressure ring 304 is located between the end cap 301 and the filter body cylinder 2, and abuts against the inner support cylinder 1 by cooperating with the outer lug 305 and the inner lug 306. A through hole 307 is provided at the center of each end cap 301.

[0018] It should be noted that in this embodiment, the through hole 307 of the upper end cover 301 is the raw material inlet, and the through hole 307 of the lower end cover 301 can be used as a slag discharge port to facilitate the discharge of raw materials before disassembly and assembly, ensuring that the fluid flows along the preset path. In addition to pressing the end of the filter body cylinder 2, the pressure ring 304's interference fit with the filter body cylinder 2 prevents raw materials from leaking to the outside from the end gap. The sealing O-ring 302 is made of fluororubber and is embedded in the groove 303 of the end cover 301. Since the cross-sectional diameter is 10%-20% larger than the groove depth, it is compressed during assembly, and together with the pressure ring 304, it can effectively seal the end cover. The gap between end cap 301 and inner support cylinder 1 ensures the sealing of the filtration process. The groove 303 is opened inside the end cap 301 to provide precise installation space and positioning constraints for the sealing O-ring 302, preventing the O-ring from shifting or falling off during assembly or operation. The upper pressure ring 304 cooperates with the outer positioning groove 103 of the inner support cylinder 1 through the outer lug 305, and the lower pressure ring 304 abuts against the bottom limiting protrusion 104 through the inner concave lug 306. This can quickly achieve radial positioning and axial fixation of the pressure ring, preventing the pressure ring 304 from rotating or shifting during disassembly or operation, and improving quick disassembly efficiency. The lower through hole 307 can be sealed by a double seal of threaded engagement with the plug and fluororubber sealing ring. Since this is a conventional sealing technique, it is not shown in the figure and will not be described in detail here.

[0019] Working principle of this utility model: Refer to the instruction manual appendix Figure 1-4 The filter body cylinder 2 is sleeved on the outside of the inner support cylinder 1. The inner limiting protrusion 201 is embedded in the outer positioning groove 103 to achieve circumferential fixation. The bottom of the filter body cylinder 2 abuts against the bottom limiting protrusion 104. The upper and lower end caps 301 are connected to the inner support cylinder 1 by threads. The sealing O-ring 302 is compressed and sealed to prevent the raw material from leaking from the gap between the end cap 301 and the cylinder 1. The pressure ring 304 presses the two ends of the filter body cylinder 2 to ensure that it fits in close with the inner support cylinder 1 and prevents the raw material from flowing into the outer gap from the end. The chemical solid-liquid mixture to be separated enters the inner support cylinder 1 through the through hole 307 of the upper end cover 301. Under the action of the feeding pressure, it flows downward along the inner guide rib 102. When the raw material flows in the inner support cylinder 1, it flows into the inner gap between the inner support cylinder 1 and the filter body cylinder 2 through the circumferentially distributed filter holes 101. Since the pore size of the filter material in the filter body cylinder 2 is smaller than the solid particles in the raw material, the liquid passes through the filter material under the action of pressure difference and enters the space between the filter body cylinder and the external equipment. The solid particles are trapped inside the filter material. The liquid that passes through the filter material flows downward along the outer gap and is finally discharged from the interface between the bottom of the filter cylinder and the external equipment, thus completing the solid-liquid separation. When too much solids are trapped inside the filter media, causing the filtration resistance to increase: Close the feed, open the slag discharge port of the lower end cover 301 to discharge the residual raw material in the inner support cylinder 1, rotate the upper and lower end covers 301 to separate them from the threads of the inner support cylinder 1, remove the end cover and pressure ring 304, pull out the filter body cylinder 2 axially upward, replace with a new filter cylinder, assemble the filter cylinder in reverse, align and embed it, reset the pressure ring 304, tighten the end cover 301, and then restart the filtration.

[0020] 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 detachable filter cartridge structure for solid-liquid separation of chemical raw materials, characterized in that: It includes an inner support cylinder (1), a filter body cylinder (2) sleeved on the outside of the inner support cylinder (1), and a quick-release assembly (3) connecting the inner support cylinder (1) and the filter body cylinder (2). The quick-release assembly (3) includes an end cap (301), a sealing O-ring (302), a groove (303), a pressure ring (304), an outer lug (305), an inner lug (306), and a through hole (307). The end cap (301), the sealing O-ring (302), and the pressure ring (304) are each provided in two sets, which are respectively installed at the upper and lower ends of the inner support cylinder (1). The sealing O-ring (302) is embedded in the groove (303) of the end cap (301) to achieve sealing. The two sets of end caps (301) are respectively threaded to the upper and lower ends of the inner support cylinder (1). The pressure ring (304) is located between the end cap (301) and the filter body cylinder (2), and abuts against the inner support cylinder (1) by cooperating with the outer lug (305) and the inner lug (306). The end cap (301) is provided with a through hole (307) at the center position.

2. The detachable filter cartridge structure for solid-liquid separation of chemical raw materials according to claim 1, characterized in that: The inner support cylinder (1) has filter holes (101) distributed circumferentially. The inner side of the inner support cylinder (1) is provided with guide ribs (102) extending axially. The outer side of the inner support cylinder (1) is provided with an outer positioning groove (103). The inner support cylinder (1) is provided with a bottom limiting protrusion (104) near the bottom of the outer positioning groove (103).

3. The detachable filter cartridge structure for solid-liquid separation of chemical raw materials according to claim 1, characterized in that: The filter body cylinder (2) has an inner limiting protrusion (201) that is adapted to the outer positioning groove (103) on its inner side, and the bottom of the filter body cylinder (2) is abutted by a bottom limiting protrusion (104).

4. The detachable filter cartridge structure for solid-liquid separation of chemical raw materials according to claim 2, characterized in that: The guide ribs (102) are evenly distributed around the inner support cylinder (1), and there are three of them. The height of each rib does not exceed the inner wall of the filter body cylinder (2).

5. The detachable filter cartridge structure for solid-liquid separation of chemical raw materials according to claim 3, characterized in that: The inner limiting protrusion (201) and the outer positioning groove (103) are in clearance fit, with a fit clearance of 0.1-0.5mm.

6. The detachable filter cartridge structure for solid-liquid separation of chemical raw materials according to claim 1, characterized in that: The sealing O-ring (302) is made of fluororubber, and its cross-sectional diameter is 10%-20% larger than the depth of the groove (303).

7. The detachable filter cartridge structure for solid-liquid separation of chemical raw materials according to claim 1, characterized in that: The pressure ring (304) that abuts at the top of the filter body cylinder (2) is installed by the cooperation of the outer protrusion (305) and the outer positioning groove (103). The pressure ring (304) that abuts at the bottom of the filter body cylinder (2) is installed by the cooperation of the inner concave ear (306) and the bottom limiting protrusion (104).

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