Filter element seat structure in filter cartridge

Abstract

The utility model discloses a filter element seat structure in a filter cartridge, which comprises a filter cartridge, a tray and a filter element seat, the tray and the filter element seat are mounted in the filter cartridge, a filter cavity is arranged in the filter cartridge, a water inlet and a water outlet are respectively arranged at the bottom of the filter cavity, and the water inlet is communicated with the water outlet sequentially through an external flow passage and an internal flow passage; the external flow channel is arranged at the edge of the bottom of the filter cavity, the bottom of the external flow channel is communicated with the water inlet, one side of the external flow channel is the inner wall of the filter cartridge, the other side of the external flow channel is the outer surface of the tray and the filter element seat, and a plurality of notch channels and flow expanding holes are formed in the top of the filter element seat; the internal flow channel is vertically arranged in the tray and the filter element seat, the inlet end of the internal flow channel is a flow inlet formed in the top of the filter element seat, and the outlet end of the internal flow channel is a water outlet formed in the bottom of the filter cavity. According to the utility model, the top of the filter element seat is provided with a plurality of notch channels and flow expanding holes, the bottom of the filter cartridge is provided with the internal flow channel which is vertically connected with the flow outlet of the filter element, and the tray is internally provided with the flow adjusting hole, so that the problems of insufficient flow and fluidity and unstable pressure drop in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the field of filtering devices, in particular to a filter element seat structure in a filtering cartridge. Background Art

[0002] In the filtering equipment, the filter cartridge and the filter element seat are both key components.

[0003] The filter cartridge is a structure used to accommodate the filter element. It is usually composed of a shell with a filter element installed inside. Its function is to protect the filter element, support the filter element, and provide an interface for connecting the pipeline.

[0004] The filter seat is a component installed at the bottom of the filter cartridge to fix and support the filter element. The design of the filter seat can vary according to the type and size of the filter element, ensuring that the filter element can be properly installed inside the filter cartridge and providing stable support.

[0005] For example, the patent document with patent number 201210458015.3 discloses an integrally formed filter cartridge, which includes a filter cartridge, a filter element tray arranged at the bottom of the filter cartridge, and a filter element seat arranged on the filter element tray, wherein the filter element tray and the filter element seat are threadedly connected; the filter element tray and the filter cartridge are separately arranged; a through hole is arranged at the bottom of the filter cartridge, a threaded column matching the through hole is arranged at the lower part of the filter element tray, a nut matching the threaded column is arranged on the threaded column, and the filter element tray is fixed to the filter cartridge by the nut; a positioning block is arranged on the outer side of the filter element tray, and the filter cartridge is provided with a positioning groove matching the positioning block; a top column is arranged on the filter element tray, and the top column abuts against the filter element seat.

[0006] In the above scheme, after the fluid to be filtered is introduced into the interior through the inlet at the bottom of the filter cartridge, it needs to pass through the flow channel between the outer edge of the filter element seat and the inner wall of the filter cartridge, and then enter the filter element (usually installed on the filter element seat) for filtration, and finally reach the water outlet of the filter cartridge through the water outlet of the filter element for discharge.

[0007] However, the above solution still has the following problems:

[0008] 1) During the filtration process, the flow channel between the outer edge of the filter element seat and the inner wall of the filter cartridge is affected by the filter element seat, and the size of the flow channel is limited, resulting in a small flow rate of the fluid introduced, and the rated filtration power of the filter element cannot be fully utilized.

[0009] 2) A flow channel needs to be set between the water outlet of the filter element and the water outlet of the filter cartridge. Generally, the water outlet of the filter element and the water outlet of the filter cartridge are connected by a pipeline to realize the transmission of the fluid. However, this solution is difficult to meet the flow rate, fluidity and pressure drop of the fluid at the same time.

[0010] If the flow rate is insufficient, the fluid flow rate will be small, and the rated filtering power of the filter element cannot be fully utilized. If the fluidity is insufficient, it cannot ensure that the fluid can flow smoothly from the water outlet of the filter element to the water outlet of the filter cartridge, and the fluid may be blocked and accumulated, affecting the normal operation of the system. If the pressure drop of the fluid during the flow process is too large, the pump needs to provide additional kinetic energy, and low energy consumption cannot be achieved.

[0011] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0012] The utility model aims to provide a filter element seat structure in a filter cartridge to solve the defects in the prior art.

[0013] The above technical objectives of the utility model are achieved through the following technical solutions:

[0014] A filter cartridge seat structure in a filter cartridge, comprising a filter cartridge, and a tray and a filter cartridge seat installed in the filter cartridge, wherein a filter chamber is provided inside the filter cartridge, and a water inlet and a water outlet are provided at the bottom of the filter chamber, respectively, and the water inlet is connected to the water outlet through an external flow channel and an internal flow channel in sequence;

[0015] The external flow channel is arranged at the bottom edge of the filter cavity, the bottom of the external flow channel is connected to the water inlet, one side of the external flow channel is the inner wall of the filter cartridge, the other side of the external flow channel is the outer surface of the tray and the filter element seat, and a plurality of notched channels and expansion holes are opened on the top of the filter element seat;

[0016] The internal flow channel is vertically arranged inside the tray and the filter element seat, the inlet end of the internal flow channel is the inlet port arranged at the top of the filter element seat, and the outlet end of the internal flow channel is the water outlet arranged at the bottom of the filter cavity.

[0017] A mounting groove is provided at the bottom of the filter cartridge, the water outlet is located in the mounting groove, an internal connecting thread is provided on the side wall of the mounting groove, and a plurality of reinforcing ribs are provided at the bottom of the mounting groove. The reinforcing ribs are radially distributed with the water outlet as the center point, and the gaps between adjacent reinforcing ribs constitute a diversion channel connected to the water outlet.

[0018] The tray comprises a disc-shaped body, a central hole is formed on the disc-shaped body, and a plurality of through-flow holes and flow regulating holes are formed on the outer side of the central hole;

[0019] A limiting ring is provided along the outer edge of the top surface of the disc-shaped body, the limiting ring and the disc-shaped body form an open structure, and an internal connecting thread is provided on the inner surface of the limiting ring;

[0020] The bottom surface of the disc-shaped body is provided with a concentric connecting ring and a flow ring, a plurality of limit blocks are evenly distributed along the outer side of the connecting ring, a plurality of flow guide columns are provided on the inner circumference of the connecting ring, the two ends of the flow guide columns extend to the inner circumference of the connecting ring and the outer circumference of the flow ring respectively, and the space between the connecting ring and the flow ring is divided into a plurality of flow ports, and an external connecting thread is provided along the outer circumference of the connecting ring;

[0021] The outlet end of the flow hole is located between the outer circumferential surface of the connecting ring and the inner circumferential surface of the flow ring, and the outlet end of the flow regulating hole is located inside the flow ring.

[0022] The aperture of the flow regulating hole is smaller than the aperture of the flow hole, and a bolt for blocking the flow regulating hole is arranged in the flow regulating hole.

[0023] The guide columns are radially distributed with the central hole as the center, and the flow outlets between any two adjacent guide columns are all distributed with an outlet end of the flow hole.

[0024] The filter element seat includes a mounting plate and a connecting portion, a connecting end is provided at the bottom of the mounting plate, the outer diameter of the end of the connecting portion is adapted to the tray, and an external connecting thread is provided at the end of the connecting portion; the notch channel and the expansion hole are distributed along the outer edge of the mounting plate, the inlet is arranged at a middle position between the mounting plate and the connecting portion, the filter element is arranged on the mounting plate, and the outlet of the filter element is connected to the inlet.

[0025] A filter cartridge filter seat flow method, comprising the following steps:

[0026] 1) The fluid to be filtered is introduced into the filter chamber inside the filter cartridge through the water inlet. After entering the filter chamber, the fluid to be filtered enters the filter element arranged on the mounting plate through the external flow channel to complete the filtration. The filtered fluid enters the tray and the internal flow channel in the filter element seat through the inlet, and is finally discharged through the water outlet at the bottom of the filter chamber;

[0027] 2) When the fluid flows through the external flow channel, if the flow rate is too large, part of the fluid to be filtered will enter the filter cavity through the several notched channels and expansion holes opened on the top of the filter element seat to meet the flow demand of the filter element set on the filter element seat;

[0028] 3) After the fluid to be filtered enters the filter element and is filtered, it will enter the internal flow channel vertically arranged in the tray and the filter element seat through the outlet at the bottom of the filter element. The outlet of the filter element is directly opposite to the inlet of the internal flow channel to ensure that the filtered fluid is discharged through the internal flow channel;

[0029] 4) When the fluid flows through the internal flow channel, the fluid will first enter the opening structure of the tray, and then enter the installation groove at the bottom of the filter cartridge through the flow hole and flow adjustment hole opened at the bottom of the opening structure. To ensure the stability of the pressure drop of the fluid during the flow process, a bolt for blocking is set in the flow adjustment hole as required to adjust the pressure drop of the fluid;

[0030] 5) When the fluid enters the installation groove, it will enter the diversion channel formed by the reinforcing rib limiter and be discharged through the outlet connected to the diversion channel. During the discharge process of the fluid, it will be guided by the inclined surface of the installation groove and the dual guiding effect of the reinforcing rib to ensure that the fluid will not form turbulence.

[0031] In summary, the utility model has the following beneficial effects:

[0032] A number of notched channels and expansion holes are opened on the top of the filter element seat to solve the problem of flow limitation caused by the space occupied by the filter element seat and the filter cartridge in the prior art. An internal flow channel vertically connected to the filter element outlet is provided at the bottom of the filter cartridge to solve the problem of insufficient fluidity of the flow channel due to too many turns in the prior art. A flow regulating hole is provided in the tray to solve the problem of excessive or insufficient pressure drop inside the filter element and the filter element seat in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is an exploded view of the filter element seat structure in the filter cartridge described in the utility model.

[0034] Figure 2 It is a connection schematic diagram of the tray and the filter cartridge described in the utility model.

[0035] Figure 3 It is an assembly cross-sectional view of the filter element seat structure described in the utility model.

[0036] Figure 4 It is a front schematic diagram of the tray described in the utility model.

[0037] Figure 5 It is a schematic diagram of the back side of the tray described in the utility model. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with illustrations and specific embodiments.

[0039] like Figures 1 to 5As shown, the filter cartridge seat structure in the filter cartridge proposed by the utility model comprises a filter cartridge 1, and a tray 2 and a filter cartridge seat 3 installed in the filter cartridge 1. A filter chamber 11 is provided inside the filter cartridge 1, and a water inlet 12 and a water outlet 13 are provided at the bottom of the filter chamber 11. The water inlet 12 is connected to the water outlet 13 through an external flow channel 14 and an internal flow channel 15 in sequence;

[0040] The external flow channel 14 is arranged at the bottom edge of the filter chamber 11, the bottom of the external flow channel 14 is connected to the water inlet 12, one side of the external flow channel 14 is the inner wall of the filter cartridge 1, and the other side of the external flow channel 14 is the outer surface of the tray 2 and the filter element seat 3, and a plurality of notched channels 31 and expansion holes 32 are opened on the top of the filter element seat 3;

[0041] The internal flow channel 15 is vertically arranged inside the tray 2 and the filter element seat 3 , the inlet end of the internal flow channel 15 is the inlet port 33 arranged at the top of the filter element seat 3 , and the outlet end of the internal flow channel 15 is the water outlet 13 arranged at the bottom of the filter cavity 11 .

[0042] The bottom of the filter cartridge 1 is provided with a mounting groove 16, the water outlet 13 is located in the mounting groove 16, an internal connecting thread is provided on the side wall of the mounting groove 16, and a plurality of reinforcing ribs 17 are provided at the bottom of the mounting groove 16. The reinforcing ribs 17 are radially distributed with the water outlet 13 as the center point, and the gaps between adjacent reinforcing ribs 17 constitute a diversion channel 18 connected to the water outlet 13.

[0043] The tray 2 includes a disc-shaped body 21, a central hole 22 is formed on the disc-shaped body 21, and a plurality of through-flow holes 23 and flow regulating holes 24 are formed on the outer side of the central hole 22;

[0044] A limiting ring 25 is provided along the outer edge of the top surface of the disc-shaped body 21. The limiting ring 25 and the disc-shaped body 21 form an open structure, and an inner connecting thread is provided on the inner surface of the limiting ring 25.

[0045] The bottom surface of the disc-shaped body 1 is provided with a concentric connecting ring 26 and a flow ring 27, a plurality of limit blocks 28 are evenly distributed along the outer side of the connecting ring 26, a plurality of flow guide columns 29 are provided on the inner circumference of the connecting ring 26, and the two ends of the flow guide columns 29 extend to the inner circumference of the connecting ring 26 and the outer circumference of the flow ring 27, respectively, and the space between the connecting ring 26 and the flow ring 27 is divided into a plurality of flow ports, and an external connecting thread is provided along the outer circumference of the connecting ring 26;

[0046] The outlet end of the flow hole 23 is located between the outer circumferential surface of the connecting ring 26 and the inner circumferential surface of the flow ring 27 , and the outlet end of the flow regulating hole 24 is located inside the flow ring 27 .

[0047] The diameter of the flow regulating hole 24 is smaller than the diameter of the flow hole 23 , and a bolt 20 for blocking the flow regulating hole 24 is provided in the flow regulating hole 24 .

[0048] The guide columns 29 are radially distributed with the central hole 22 as the center, and the flow outlet between any two adjacent guide columns 29 is distributed with an outlet end of a flow hole 23 .

[0049] The filter element seat 3 includes a mounting plate 34 and a connecting portion 35. A connecting end 35 is provided at the bottom of the mounting plate 34. The outer diameter of the end of the connecting portion 35 is adapted to the tray 2, and an external connecting thread is provided at the end of the connecting portion 35. The notch channel 31 and the expansion hole 32 are distributed along the outer edge of the mounting plate 34. The inlet 33 is arranged at a middle position between the mounting plate 34 and the connecting portion 35. The filter element is arranged on the mounting plate 34, and the outlet of the filter element is connected to the inlet 33.

[0050] A filter cartridge filter seat flow method, comprising the following steps:

[0051] 1) The fluid to be filtered is introduced into the filter chamber 11 inside the filter cartridge 1 through the water inlet 12. After entering the filter chamber 11, the fluid to be filtered enters the filter element disposed on the mounting plate 34 through the external flow channel 14 to complete filtering. The filtered fluid enters the tray 2 and the internal flow channel 15 in the filter element seat 3 through the inlet 33, and is finally discharged through the water outlet 13 at the bottom of the filter chamber 11;

[0052] 2) When the fluid flows through the external flow channel 14, if the flow rate is too large, part of the fluid to be filtered will enter the filter chamber 11 through the plurality of notched channels 31 and expansion holes 32 opened on the top of the filter element seat 3 to meet the flow demand of the filter element arranged on the filter element seat 3;

[0053] 3) After the fluid to be filtered enters the filter element and is filtered, it will enter the internal flow channel 15 vertically arranged in the tray 2 and the filter element seat 3 through the outlet at the bottom of the filter element. The outlet of the filter element is directly opposite to the inlet 33 of the internal flow channel 15 to ensure that the filtered fluid is discharged through the internal flow channel 15;

[0054] 4) When the fluid flows through the internal flow channel 15, the fluid first enters the opening structure of the tray 2, and enters the installation groove 16 provided at the bottom of the filter cartridge 1 through the flow hole 23 and the flow regulating hole 24 provided at the bottom of the opening structure. To ensure the stability of the pressure drop of the fluid during the flow process, a bolt 20 for blocking is provided in the flow regulating hole 24 as required to adjust the pressure drop of the fluid;

[0055] 5) When the fluid enters the installation groove 16, it will enter the diversion channel 18 formed by the reinforcing ribs 17, and be discharged through the water outlet 13 connected to the diversion channel 18. During the discharge process of the fluid, it will be guided by the inclined surface of the installation groove 16 and the reinforcing ribs 17 to ensure that the fluid will not form turbulence.

[0056] In this document, the directions or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", and "horizontal" are based on the directions or positional relationships shown in the accompanying drawings and are only for the clarity of the technical solution and the convenience of description. Therefore, they should not be understood as limitations on the present invention.

[0057] In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0058] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A filter cartridge seat structure in a filter cartridge, comprising a filter cartridge (1), and a tray (2) and a filter cartridge seat (3) installed in the filter cartridge (1), wherein a filter chamber (11) is provided inside the filter cartridge (1), and a water inlet (12) and a water outlet (13) are provided at the bottom of the filter chamber (11), respectively, and the water inlet (12) is connected to the water outlet (13) through an external flow channel (14) and an internal flow channel (15) in sequence; It is characterized in that The external flow channel (14) is arranged at the bottom edge of the filter chamber (11), the bottom of the external flow channel (14) is connected to the water inlet (12), one side of the external flow channel (14) is the inner wall of the filter cartridge (1), and the other side of the external flow channel (14) is the outer surface of the tray (2) and the filter element seat (3), and a plurality of notched channels (31) and expansion holes (32) are provided on the top of the filter element seat (3); The internal flow channel (15) is vertically arranged inside the tray (2) and the filter element seat (3); the inlet end of the internal flow channel (15) is an inlet (33) arranged at the top of the filter element seat (3); and the outlet end of the internal flow channel (15) is a water outlet (13) arranged at the bottom of the filter cavity (11).

2. The filter element seat structure in the filter cartridge according to claim 1, characterized in that: The bottom of the filter cartridge (1) is provided with a mounting groove (16), the water outlet (13) is located in the mounting groove (16), an internal connection thread is provided on the side wall of the mounting groove (16), and a plurality of reinforcing ribs (17) are provided at the bottom of the mounting groove (16), the reinforcing ribs (17) are radially distributed with the water outlet (13) as the center point, and the gaps between adjacent reinforcing ribs (17) constitute a diversion channel (18) connected to the water outlet (13).

3. The filter element seat structure in the filter cartridge according to claim 2, characterized in that: The tray (2) comprises a disc-shaped main body (21), a central hole (22) is formed on the disc-shaped main body (21), and a plurality of through-flow holes (23) and flow regulating holes (24) are formed on the outer side of the central hole (22); A limiting ring (25) is provided along the outer edge of the top surface of the disc-shaped main body (21); the limiting ring (25) and the disc-shaped main body (21) form an open structure; and an internal connecting thread is provided on the inner surface of the limiting ring (25); The bottom surface of the disc-shaped main body (21) is provided with a concentric connecting ring (26) and a flow ring (27), a plurality of limit blocks (28) are evenly distributed along the outer side of the connecting ring (26), a plurality of flow guide columns (29) are provided on the inner circumferential surface of the connecting ring (26), two ends of the flow guide columns (29) respectively extend to the inner circumferential surface of the connecting ring (26) and the outer circumferential surface of the flow ring (27), and the space between the connecting ring (26) and the flow ring (27) is divided into a plurality of flow ports, and an external connecting thread is provided along the outer circumferential surface of the connecting ring (26); The outlet end of the flow hole (23) is located between the outer circumferential surface of the connecting ring (26) and the inner circumferential surface of the flow ring (27), and the outlet end of the flow regulating hole (24) is located inside the flow ring (27).

4. The filter element seat structure in the filter cartridge according to claim 3, characterized in that: The diameter of the flow regulating hole (24) is smaller than the diameter of the flow hole (23), and a bolt (20) for sealing the flow regulating hole (24) is provided in the flow regulating hole (24).

5. The filter element seat structure in the filter cartridge according to claim 3, characterized in that: The guide columns (29) are radially distributed with the central hole (22) as the center, and the flow opening between any two adjacent guide columns (29) is distributed with an outlet end of a flow hole (23).

6. The filter element seat structure in the filter cartridge according to claim 1, characterized in that: The filter element seat (3) comprises a mounting plate (34) and a connecting portion (35); the connecting portion (35) is provided at the bottom of the mounting plate (34); the outer diameter of the end of the connecting portion (35) is adapted to the tray (2); and an external connecting thread is provided at the end of the connecting portion (35); the notch channel (31) and the expansion hole (32) are distributed along the outer edge of the mounting plate (34); the inlet (33) is provided through the mounting plate (34) and at a middle position between the connecting portion (35); the filter element is provided on the mounting plate (34); and the outlet of the filter element is communicated with the inlet (33).

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