High-recovery-rate bag type filter
By setting a first platform and matching grooves and protrusions in the capsule filter, the problem of low liquid recovery rate caused by large dead volume is solved, and a balance between high liquid recovery rate and filtration efficiency is achieved.
Patent Information
- Application Number
- CN202520033634.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Existing capsule filters have a large dead volume, resulting in low liquid recovery rate.
By setting a first platform in the filter, making its surface level with or substantially level with the bottom edge of the through hole closest to the base, the dead volume at the bottom of the flow cavity between the filter element housing and the filter housing is reduced, and welding quality and sealing are ensured by welding with a matching groove and protrusion structure.
Without affecting filtration efficiency, it significantly reduces dead volume space, improves liquid recovery rate, and reduces liquid waste, especially when liquid is expensive or scarce, resulting in significant economic benefits.
Smart Images
Figure CN223788339U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to filter filter technical field, especially, relate to a high recovery rate capsule filter. BACKGROUND
[0002] The existing capsule filter is also called integrated filter, adopts the folding filter membrane, and has large filter surface area, is suitable for filtering large volume solution, at present, the widely used capsule filter on market mostly has a closed container, is equipped with two joints on the container respectively, is used for liquid inlet and liquid outlet respectively, and additionally is equipped with exhaust, channel of material overflow. In actual use process, such as the capsule filter and preparation method thereof disclosed by Chinese patent publication No. CN115970385A, in order to filter the liquid entering the capsule filter clean to the greatest extent, after filtering is completed, the liquid in the filter is filtered to the greatest extent in the way of liquid inlet from directly above and liquid outlet from directly below. In the above technical scheme, the liquid passes through the outer sleeve from the flow cavity, is filtered by the filter core, and the filtered liquid enters the inside of the filter core, passes through the inner sleeve, flows out from the liquid outlet of the filter core bottom cover through the liquid outlet channel, the liquid that cannot be filtered by the filter core flows out through the backflow channel of the filter bottom cover and is collected. Since the flow cavity includes the area below the lowest hole position of the outer sleeve, the area cannot be filtered and becomes the dead volume of the capsule filter. The space of the dead volume is large, and the corresponding lost material liquid is also large, which reduces the recovery rate of the material liquid and causes economic loss to the user. CONTENT OF THE UTILITY MODEL
[0003] The utility model provides a high recovery rate capsule filter, through setting up first platform and the height position of first platform and the through -hole closest to base, under the premise of not affecting filter filter efficiency, obviously reduce the space of dead volume, improve the recovery rate of material liquid.
[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:
[0005] The application discloses a high-recovery capsule filter which comprises a filter shell, a filter core arranged in the filter shell and a base connected with the filter shell and the filter core respectively, the filter core shell is provided with a plurality of through holes, one end of the filter core towards the base is provided with an interface end cover, the base is provided with a liquid outlet interface, the interface end cover is provided with a filter core liquid outlet interface communicated with the liquid outlet interface, the base is provided with a first groove and a first platform located at the outer periphery of the first groove, the interface end cover is in sealing connection with the first groove, and the surface of the first platform is consistent or basically consistent with the bottom edge of the through hole closest to the base. The liquid entering into the filter shell enters into the filter core through the through holes of the filter core shell. The first platform is arranged on the base, the surface of the first platform is consistent or basically consistent with the bottom edge of the through hole closest to the base, and the first platform can effectively fill the dead volume at the bottom of the flow cavity between the filter core shell and the filter shell, so that the recovery rate of the liquid is improved, and the waste of the liquid can be effectively reduced when the liquid is less or the liquid is expensive. Meanwhile, the first platform plays a guiding role on the liquid flowing to the through hole, and the liquid can flow to the filter core smoothly, so that the filtering efficiency is ensured. Since the connection process of the filter core and the base cannot guarantee that the surface of the first platform is completely consistent with the bottom edge of the through hole closest to the base, when the height difference between the surface of the first platform and the bottom edge of the through hole closest to the base is not more than 3 mm, the surface of the first platform is basically consistent with the bottom edge of the through hole closest to the base.
[0006] As preferred, the shape of the first groove is matched with the shape of the interface end cover. The matching of the shape of the first groove with the shape of the interface end cover can reduce the cavity between the interface end cover and the first groove and reduce the dead volume.
[0007] As preferred, a gap is arranged between the side wall of the first groove and the outer surface of the filter core shell, and the width of the gap is 0.2-2 mm. The gap between the side wall of the first groove and the filter core shell can guarantee that the filter core shell does not interfere with the first groove in the welding process, and the welding quality is improved.
[0008] As preferred, the bottom surface of the first groove is provided with a first protrusion surrounding the liquid outlet interface and a second platform located outside the first protrusion, the height of the second platform is lower than that of the first platform, and the height of the first protrusion is lower than that of the first platform. The height difference between the first protrusion and the first platform and the second platform is formed, the first protrusion is connected with the filter core shell, the welding process does not affect the first platform and the second platform, and the stable welding quality is guaranteed.
[0009] As preferred, the height difference between the second platform and the first platform is 5-15 mm.
[0010] Preferably, the interface end cover is provided with a filter core connecting protrusion around the filter core liquid outlet, and the first protrusion is welded to the filter core connecting protrusion; and / or the base is provided with a second protrusion outside the first platform, and the second protrusion is welded to the filter shell.
[0011] Preferably, the base is provided with a backflow interface, and the second platform is provided with a third groove in communication with the backflow interface. The backflow interface is arranged to discharge a small amount of liquid that cannot be filtered.
[0012] Preferably, the interface end cover is provided with at least one sealing ring, and the filter core is sealingly fitted with the first groove through the interface end cover. The sealing ring can seal the connection to prevent the unfiltered material liquid from directly flowing into the liquid outlet interface.
[0013] Preferably, the base is provided with a backflow interface, and the first platform is provided with a backflow groove, and the backflow interface is in communication with the flow cavity between the filter core shell and the filter shell through the backflow groove. The backflow interface is arranged to discharge a small amount of liquid that cannot be filtered.
[0014] Preferably, the base and the filter shell are made of stainless steel, polypropylene, polyether sulfone, polytetrafluoroethylene or nylon. The utility model has the advantages that (1) the dead volume space is obviously reduced and the material liquid recovery rate is improved without affecting the flow and filtering efficiency of the filter; (2) the dead volume space can be effectively reduced for the filter core welded or inserted fixed, and the utility model has high adaptability; (3) the first platform can guide the material liquid to the through hole, and the flow and filtering efficiency can be ensured. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 Fig. 1 is a structural schematic diagram of an embodiment 1 of the utility model;
[0016] Figure 2 Fig. 2 is a structural schematic diagram of a base of the embodiment 1 of the utility model;
[0017] Figure 3 Fig. 3 is a structural schematic diagram of an embodiment 2 of the utility model;
[0018] Figure 4 Fig. 4 is a structural schematic diagram of a base of the embodiment 2 of the utility model;
[0019] Figure 5 Fig. 5 is a structural schematic diagram of an embodiment 3 of the utility model;
[0020] Figure 6 Fig. 6 is a structural schematic diagram of a base and a filter core of the embodiment 3 of the utility model;
[0021] Figure 7 is the structural schematic view of the base of the embodiment 3 of the utility model.
[0022] In the drawing: filter core 1, filter core shell 1a, through hole 11, through hole 11a closest to the base, interface end cover 12, filter core liquid outlet 12a, filter core connecting protrusion 12b, sealing ring 13, base 2, first platform 21, second protrusion 22, first recess 23, second platform 24, first protrusion 25, gap 26, third recess 27, liquid inlet recess 28, backflow recess 29, liquid outlet interface 2a, backflow interface 2c, filter shell 3, liquid inlet interface 3a, clamp 4. DETAILED DESCRIPTION
[0023] The utility model will be further described below in combination with the drawings and specific embodiments.
[0024] As Figure 1 shown in the embodiment, a high recovery rate bladder filter, comprising filter shell 3, filter core 1 and base 2, wherein the material of base 2 and filter shell 3 is polypropylene, polyether sulfone, polytetrafluoroethylene or nylon, both are connected to form an inner cavity, filter core 1 is arranged in the inner cavity formed by filter shell 3 and base 2, and filter core 1 is also connected with base 2. Filter core shell 1a of filter core 1 is provided with a plurality of through holes 11, one end of filter core 1 towards base 2 is provided with interface end cover 12, base 2 is provided with liquid outlet interface 2a, interface end cover 12 is provided with filter core liquid outlet 12a communicated with liquid outlet interface 2a, and the top of filter shell 3 is provided with liquid inlet interface 3a. The feed liquid enters into the inside of filter shell 3 from liquid inlet interface 3a, flows into the inside of filter core 1 through the through hole 11 of filter core shell 1a, the inside of filter core 1 is provided with a folding type filter membrane, the filter surface area is large, and the filtrate formed after the filtration of the feed liquid is discharged in turn through filter core liquid outlet 12a of interface end cover 12 and liquid outlet interface 2a of base 2.
[0025] In combination Figure 1 , Figure 2As shown, the base 2 is provided with a first recess 23 and a first platform 21 located at the periphery of the first recess 23, the first recess 23 is arranged around the liquid outlet interface 2a of the base 2, the bottom surface of the first recess 23 is provided with a first protrusion 25 surrounding the liquid outlet interface 2a and a second platform 24 located outside the first protrusion 25, the interface end cover 12 is provided with a filter core connecting protrusion 12b surrounding the filter core liquid outlet 12a, the surfaces of the first protrusion 25 and the filter core connecting protrusion 12b are both circular annular, the first protrusion 25 and the filter core connecting protrusion 12b are welded to be connected, so as to realize the sealed connection of the interface end cover 12 and the first recess 23. The fusion welding process can adopt one or more of heat welding, ultrasonic welding and eddy current welding. The height of the second platform 24 is lower than the height of the first platform 21, the height of the first protrusion 25 is lower than the height of the first platform 21, and the height of the first protrusion 25 is higher than the height of the second platform 24, so that the connecting part of the first protrusion 25 and the filter core connecting protrusion 12b, that is, the welding line, is fully melted during the process of contacting the heater, without heating the materials near the position, which can effectively ensure the welding quality.
[0026] The first platform 21 is located outside the filter core 1, the surface of the first platform 21 is consistent with the height of the bottom edge of the through hole 11a closest to the base, when the material liquid flows through the cavity between the filter core shell 1a and the filter shell 3, the first platform 21 can guide the flow of the material liquid, so that the material liquid can smoothly flow into the filter core 1 through the through hole 11a closest to the base 2. The first platform 21 can effectively fill the dead volume at the bottom of the flow cavity between the filter core shell 1a and the filter shell 3, so as to greatly reduce the dead volume, increase the material liquid flowing into the filter core 1, improve the recovery rate of the material liquid, and effectively reduce the waste of the material liquid.
[0027] As shown in Figure 1 The gap 26 between the side wall of the first recess 23 and the outer surface of the filter core shell 1a is 0.2-2mm. The smaller the gap 26 between the recess side wall and the filter core shell 1a, the smaller the dead volume will be, but in order to ensure that the filter core shell 1a does not interfere with the first recess 23 during the welding process, a minimum safety gap is set, and the appropriate width of the gap 26 can effectively position the filter core shell 1a and the first recess 23 to ensure the welding quality.
[0028] As shown in Figure 1 , Figure 2 The base 2 is provided with a second protrusion 22 located outside the first platform 21, the surface of the second protrusion 22 is circular annular, the second protrusion 22 is welded to be connected with the filter shell 3, and the fusion welding process can adopt one or more of heat welding, ultrasonic welding and eddy current welding.
[0029] In the actual filtering process, the feed liquid enters into the filter housing 3 from the liquid inlet interface 3a at the top of the filter housing 3, and then enters into the filter element 1 through the through hole 11 of the filter element shell 1a for filtering. The filtered filtrate is sequentially discharged outward through the filter element outlet 12a of the interface end cover 12 and the liquid outlet interface 2a of the base 2. In addition, the base 2 is also provided with a backflow interface 2c in communication with the inside of the filter element 1, which is used to discharge the remaining small amount of liquid that cannot be filtered.
[0030] Example 2
[0031] The difference between Example 2 and Example 1 is that, as shown in Figure 3 、 Figure 4 , the shape of the first recess 23 is matched with the shape of the interface end cover 12, the height of the second platform 24 is lower than the height of the first platform 21, the height of the first protrusion 25 is lower than the height of the first platform 21, and the height of the first protrusion 25 is lower than the height of the second platform 24, so as to facilitate the smooth installation of the interface end cover 12 of the filter element 1 into the first recess 23, and the cooperation between the first recess 23 and the interface end cover 12 is more compact, further reducing the dead volume between the interface end cover 12 and the first recess 23. The height difference between the second platform 24 and the first platform 21 is 5-15 mm. The base 2 is provided with a backflow interface 2c, and the second platform 24 is provided with a third recess 27 in communication with the backflow interface 2c, and the remaining small amount of liquid can be discharged outward through the third recess 27 and the backflow interface 2c.
[0032] Example 3
[0033] The difference between Example 3 and Example 1 is that, as shown in Figure 5 、 Figure 6 , the filter housing 3 and the base 2 are fixed by the clamp 4, and the materials of the base 2 and the filter housing 3 are stainless steel. The shape of the first recess 23 provided on the base 2 is matched with the shape of the interface end cover 12, the interface end cover 12 is provided with two surrounding sealing rings 13, the sealing rings 13 can be sleeved at the connection between the interface end cover 12 and the first recess 23, such as rubber rings, and the filter element 1 is inserted and sealed with the first recess 23 through the interface end cover 12, so as to realize the insertion and fixation between the filter element 1 and the base 2. After the fixation of the filter element 1 and the base 2 is completed, the surface of the first platform 21 is kept consistent with the height of the bottom edge of the through hole 11a closest to the base, so as to reduce the size of the dead volume inside the filter, improve the recovery rate of the feed liquid, and effectively reduce the waste of the feed liquid.
[0034] As shown in Figure 6 、 Figure 7As shown, the base 2 is provided with a liquid inlet interface 3a, and the first platform 21 is provided with a liquid inlet groove 28, and the liquid inlet interface 3a is communicated with the flow cavity between the filter core shell 1a and the filter housing 3 through the liquid inlet groove 28.
[0035] The above has carried out the detailed introduction to the embodiment of the utility model, the principle and implementation mode of the utility model have been set forth in this paper by applying specific examples, the above embodiment is only for helping understanding the method and its core thought of the utility model;Meanwhile, for the person skilled in the art, according to the thought of the utility model, there will be changes in specific implementation mode and application range, and the above-mentioned, the content of the specification should not be understood as the limitation of the utility model.
Claims
1. A high-recovery capsule filter, comprising a filter housing (3), a filter core (1) arranged in the filter housing (3), and a base (2) connected with the filter housing (3) and the filter core (1) respectively, wherein the filter core housing (1a) of the filter core (1) is provided with a plurality of through holes (11), one end of the filter core (1) facing the base (2) is provided with an interface end cover (12), the base (2) is provided with a liquid outlet interface (2a), and the interface end cover (12) is provided with a filter core liquid outlet (12a) in communication with the liquid outlet interface (2a), characterized in that, The base (2) is provided with a first recess (23) and a first platform (21) located at the periphery of the first recess (23), the interface end cover (12) is in sealing connection with the first recess (23), and the surface of the first platform (21) is consistent or substantially consistent with the height of the bottom edge of the through hole (11a) closest to the base.
2. A high recovery rate capsule filter according to claim 1, characterized in that, The shape of the first recess (23) is matched with the shape of the interface end cover (12).
3. A high recovery rate capsule filter according to claim 1, characterized in that, The side wall of the first recess (23) is provided with a gap (26) between the outer surface of the filter core shell (1a), and the width of the gap (26) is 0.2-2mm.
4. A high recovery rate capsule filter according to claim 1, wherein, The bottom surface of the first recess (23) is provided with a first protrusion (25) surrounding the outlet interface (2a) and a second platform (24) located outside the first protrusion (25), the height of the second platform (24) is lower than the height of the first platform (21), and the height of the first protrusion (25) is lower than the height of the first platform (21).
5. A high recovery rate capsule filter according to claim 4, wherein, The height difference between the second platform (24) and the first platform (21) is 5-15mm.
6. A high recovery rate capsule filter according to claim 4, wherein, The interface end cover (12) is provided with a filter core connecting protrusion (12b) surrounding the filter core outlet (12a), the first protrusion (25) is welded to the filter core connecting protrusion (12b); and / or, the base (2) is provided with a second protrusion (22) located outside the first platform (21), and the second protrusion (22) is welded to the filter shell (3).
7. A high recovery rate capsule filter according to claim 4, wherein, The base (2) is provided with a backflow interface (2c), and the second platform (24) is provided with a third recess (27) in communication with the backflow interface (2c).
8. A high recovery rate capsule filter according to claim 1, characterized in that, The interface end cover (12) is provided with at least one surrounding sealing ring (13), and the filter core (1) is in sealing fit with the first recess (23) through the interface end cover (12).
9. A high recovery rate capsule filter according to claim 8, characterized in that, The base (2) is provided with a backflow interface (2c), and the first platform (21) is provided with a backflow recess (29), and the backflow interface (2c) is in communication with the flow-through cavity between the filter core shell (1a) and the filter shell (3) through the backflow recess (29).
10. A high recovery rate capsule filter according to claim 1, characterized in that, The materials of the base (2) and the filter shell (3) are stainless steel, polypropylene, polyether sulfone, polytetrafluoroethylene or nylon.