Security filter

Abstract

The utility model provides a security filter which comprises a filter cartridge body and a large-flux folding filter element, a lower sealing partition plate is fixedly mounted at the lower part in the filter cartridge body, and two valve element mounting seats are uniformly distributed and fixedly mounted on the lower sealing partition plate; a sealing cover is detachably and fixedly mounted at the top end of the filter cylinder; the large-flux folding filter element is detachably and fixedly mounted in the filter cylinder body through the sealing cover and the valve element mounting seat, and the top end of the large-flux folding filter element is connected with the sealing cover in a pulling and inserting manner; the large-flux folding filter element is communicated with the corresponding valve element mounting seat; when the large-flux folding filter element is disassembled and assembled, the pressing plate does not need to be disassembled and assembled, and the filter element can be disassembled and assembled by opening the sealing cover, so that the disassembling and assembling steps are reduced, and the working procedures are simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to the field of filters, in particular to a security filter. Background Art

[0002] A security filter is located at the end of the pretreatment stage and before membrane treatment in a water treatment system. It is used to remove fine particulate matter from the water to protect subsequent water treatment equipment such as reverse osmosis membranes, ultrafiltration membranes, and ion exchange resin beds from contamination and damage. Its primary function is to capture and remove suspended solids in the water, such as sediment, colloids, algae fragments, microorganisms, and filter media debris that was not completely removed during the pretreatment stage (such as broken resin particles and activated carbon powder).

[0003] However, when replacing the filter element of the existing safety filter, the pressure plate needs to be disassembled and assembled, which increases the operation steps and thus affects the replacement efficiency.

[0004] Therefore, it is very necessary to invent a security filter. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a technical solution adopted by a security filter: a security filter, comprising a filter cylinder and a large-flux folded filter element, wherein: a lower sealing partition is fixedly installed at the lower inside of the filter cylinder, and two valve core mounting seats are evenly fixedly installed on the lower sealing partition; a sealing cover is detachably fixedly installed on the top of the filter cylinder; the large-flux folded filter element is detachably fixedly installed in the filter cylinder through the sealing cover and the valve core mounting seat, and the top of the large-flux folded filter element is connected to the sealing cover by plugging and unplugging; the large-flux folded filter element is connected to the corresponding valve core mounting seat.

[0006] Preferably, a support sleeve corresponding to the large-flux pleated filter element is fixedly installed inside the sealing cover, and the support sleeve is plugged in and connected to the top end of the corresponding large-flux pleated filter element. The support sleeve is used to support and position the large-flux pleated filter element to ensure the stability of the large-flux pleated filter element after installation.

[0007] Preferably, an annular groove is provided on the inner circumferential surface of the valve core mounting seat, and a lower notch is provided on each side of the upper port of the valve core mounting seat; the lower notch is located above the annular groove, and the lower notch is connected to the annular groove; the bottom end of the large-flux folded filter element is rotatably clamped between the lower notch and the annular groove.

[0008] Preferably, the top end of the large-flux pleated filter element is a closed end, and the bottom end of the large-flux pleated filter element is fixedly installed with a connecting ring, which is connected to the interior of the large-flux pleated filter element; the interior of the large-flux pleated filter element is detachably fixed with a filter element skeleton, and the bottom end of the filter element skeleton extends from the connecting ring, and the bottom end of the filter element skeleton is threadedly connected to the valve core mounting seat; the connecting ring and the valve core mounting seat are clamped together.

[0009] Preferably, a lower tooth plate is fixedly mounted on each side of the bottom end of the connecting ring, and the lower tooth plate is engaged with the ring groove through a lower notch.

[0010] Preferably, an external threaded joint is fixedly installed on the bottom end of the filter element skeleton, and the filter element skeleton is detachably fixedly connected to the valve core mounting seat through the external threaded joint.

[0011] Preferably, a water inlet is fixedly installed on one side above the filter cylinder, and a water outlet is fixedly installed on one side below the filter cylinder; a baffle is fixedly installed at a position inside the filter cylinder corresponding to the water inlet; the water inlet and the water outlet are both connected to the inside of the filter cylinder, and the water inlet is above the lower sealing partition, and the water outlet is below the lower sealing partition; the water outlet is connected to the valve core mounting seat.

[0012] Preferably, an integrated socket is provided at the port of the sealing cover, and the socket is connected to the top end of the filter cylinder by plugging and unplugging.

[0013] Preferably, a socket corresponding to the plug is provided at the top end of the filter cylinder, and the plug is plugged into the socket.

[0014] Preferably, a plurality of sealing rings are evenly distributed and fixedly mounted on the outer peripheral surface of the socket, and the sealing rings are inserted into the socket along with the socket to ensure the sealing between the sockets after being plugged in.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] When disassembling and assembling the large-flow pleated filter element, you only need to open the sealing cover to disassemble and assemble the filter element, avoiding the trouble of disassembling and assembling the pressure plate, thereby reducing the disassembly and assembly steps and making the process simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the sealing cover opening structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the large-flux folded filter element removal structure of the utility model.

[0019] Figure 3 It is a schematic diagram of the partial cross-section structure of the filter cylinder of the present utility model.

[0020] Figure 4 It is a schematic diagram of the filter element skeleton removal structure of the utility model.

[0021] Figure 5 It is a schematic diagram of the structure of the large-flux pleated filter element of the utility model.

[0022] Figure 6 It is a partial enlarged structural diagram of point A of the present invention.

[0023] Figure 7 It is a partial enlarged structural diagram of point B of the present utility model.

[0024] In the picture:

[0025] Filter cylinder 1, lower sealing baffle 2, valve core mounting seat 3, ring groove 31, lower notch 32, O-ring 33, support sleeve 4, filter element frame 5, external threaded joint 51, large-flow pleated filter element 6, handle 61, support plate 62, connecting ring 63, lower tooth plate 64, socket 7, socket 8, water inlet 9, water outlet 10, ball valve 11, support leg 12, baffle 13, pressure device assembly 14, handle 15, lifting eye bolt fastener 16, sealing cover 17, sealing ring 18. DETAILED DESCRIPTION

[0026] In order to help those skilled in the art better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0027] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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, an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0028] The present invention will be further described below with reference to the accompanying drawings: Example

[0029] Reference Figure 1-7 , a security filter, comprising a filter cylinder 1 and a large flux pleated filter element 6, wherein: a lower sealing partition 2 is fixedly installed at the bottom of the filter cylinder 1, and the lower sealing partition 2 is provided to separate the water inlet 9 from the water outlet 10 and the DN25 pipe, so that filtration is performed through the large flux pleated filter element 6, and two valve core mounting seats 3 are evenly fixedly installed on the lower sealing partition 2, so that the large flux pleated filter element 6 can be positioned and disassembled through the valve core mounting seats 3; a sealing cover 17 is detachably fixedly installed on the top of the filter cylinder 1 through an eye bolt fastener 16, The eyebolt fastener 16 is provided to facilitate the disassembly and assembly of the sealing cover 17; the large-flux folded filter element 6 is detachably fixed in the filter cylinder 1 through the sealing cover 17 and the valve core mounting seat 3, so that the large-flux folded filter element 6 is supported and positioned by the sealing cover 17 and the valve core mounting seat 3 to ensure the stability of the large-flux folded filter element 6 inside the filter cylinder 1, and the top end of the large-flux folded filter element 6 is connected to the sealing cover 17 for the later disassembly and assembly of the large-flux folded filter element 6; the large-flux folded filter element 6 is connected to the corresponding valve core mounting seat 3.

[0030] A supporting sleeve 4 corresponding to the large-flux folded filter element 6 is fixedly installed inside the sealing cover 17, and the supporting sleeve 4 is plugged in and out of the top end of the corresponding large-flux folded filter element 6. The supporting sleeve 4 is used to support and position the large-flux folded filter element 6 to ensure the stability of the large-flux folded filter element 6 after installation. Moreover, through the setting of the supporting sleeve 4, the large-flux folded filter element 6 can be disassembled and assembled by opening the sealing cover 17, which is convenient and quick. At the same time, the disassembly and assembly steps can be reduced during later maintenance.

[0031] The inner circumference of the valve core mounting seat 3 is provided with an annular groove 31 to provide a screw connection space for the lower tooth plate 64 through the annular groove 31, and a lower notch 32 is provided on both sides of the upper port of the valve core mounting seat 3; the lower notch 32 is above the annular groove 31, and the lower notch 32 is connected to the annular groove 31. Through the setting of the lower notch 32, the lower tooth plate 64 can enter the annular groove 31 for locking when the large-flux pleated filter element 6 is rotated, or the lower tooth plate 64 can be moved out of the annular groove 31; an O-ring 33 is fixedly installed inside the valve core mounting seat 3, and the O-ring 33 is below the annular groove 31, and the O-ring 33 is in sealing contact with the bottom end of the large-flux pleated filter element 6; the bottom end of the large-flux pleated filter element 6 is rotatably engaged with the annular groove 31 through the lower notch 32 to ensure the stability between the large-flux pleated filter element 6 and the valve core mounting seat 3 after installation.

[0032] The top of the large-flux folded filter element 6 is a closed end, and the bottom end of the large-flux folded filter element 6 is fixedly installed with a connecting ring 63 so that the large-flux folded filter element 6 can be docked with the valve core mounting seat 3, and the connecting ring 63 is connected to the interior of the large-flux folded filter element 6; the interior of the large-flux folded filter element 6 is detachably fixed with a filter element skeleton 5 so that the large-flux folded filter element 6 is supported by the filter element skeleton 5 to prevent the large-flux folded filter element 6 from becoming deflated during operation, and the bottom end of the filter element skeleton 5 extends from the connecting ring 63, and the bottom end of the filter element skeleton 5 is threadedly connected to the valve core mounting seat 3 to ensure the stability between the filter element skeleton 5 and the valve core mounting seat 3 after installation; the connecting ring 63 is clamped with the valve core mounting seat 3, and the outer ring of the connecting ring 63 contacts the inner ring of the O-ring 33 to ensure the sealing between the connecting ring 63 and the valve core mounting seat 3.

[0033] A handle 61 is fixedly installed on the top surface of the large-flux pleated filter element 6 to provide a force point for the operator when disassembling and assembling the large-flux pleated filter element 6; a number of support plates 62 are evenly distributed and fixedly installed on the bottom surface of the large-flux pleated filter element 6, and the bottom end of the support plate 62 is in contact with the upper surface of the lower sealing partition 2.

[0034] An annular cavity corresponding to the O-ring 33 is provided on the outer peripheral surface of the connecting ring 63 so as to provide contact space for the O-ring 33 through the annular cavity, and a lower tooth plate 64 is fixedly installed on both sides of the bottom end of the connecting ring 63. Through the setting of the lower tooth plate 64, when the large-flux pleated filter element 6 is installed, it can move into the annular groove 31 through the lower notch 32 as the large-flux pleated filter element 6 rotates, thereby locking the lower tooth plate 64 through the annular groove 31 to prevent the large-flux pleated filter element 6 from loosening. The lower tooth plate 64 is clamped with the annular groove 31 through the lower notch 32.

[0035] An external threaded joint 51 is fixedly mounted on the bottom end of the filter element skeleton 5 , and the filter element skeleton 5 is detachably fixedly connected to the valve core mounting seat 3 via the external threaded joint 51 , so that the filter element skeleton 5 and the valve core mounting seat 3 can be disassembled and assembled.

[0036] A water inlet 9 is fixedly installed on one side above the filter cylinder 1, and a water outlet 10 is fixedly installed on one side below the filter cylinder 1. An L-shaped DN25 sewage pipe with a ball valve 11 is fixedly installed on the bottom of the filter cylinder 1; a number of support legs 12 are evenly fixedly installed on the bottom of the filter cylinder 1; a baffle 13 is fixedly installed at a position corresponding to the water inlet 9 inside the filter cylinder 1; the water inlet 9, the water outlet 10 and the DN25 pipe are all connected to the inside of the filter cylinder 1, and the water inlet 9 is above the lower sealing partition 2, and the water outlet 10 and the DN25 pipe are both below the lower sealing partition 2; the water outlet 10 and the DN25 pipe are both connected to the valve core mounting seat 3.

[0037] The pressure device assembly 14 and the handle 15 are fixedly mounted on the sealing cover 17 , and a hole communicating with the pressure device assembly 14 is provided on the sealing cover 17 .

[0038] An integrated socket 7 is provided at the port of the sealing cover 17, and the socket 7 is connected to the top of the filter cylinder 1 by plugging and unplugging; a socket 8 corresponding to the socket 7 is provided at the top of the filter cylinder 1, and the socket 7 is plugged into the socket 8. Through the arrangement of the socket 7 and the socket 8, the sealing cover 17 can be supported and positioned when the sealing cover 17 is installed, preventing the sealing cover 17 from deviating when the sealing cover 17 is fixed by the eye bolt fastener 16, and at the same time, the contact area between the sealing cover 17 and the filter cylinder 1 can be increased, thereby improving the sealing performance between the sealing cover 17 and the filter cylinder 1.

[0039] Several sealing rings 18 are evenly distributed and fixedly mounted on the outer circumference of the socket 7, and the sealing rings 18 are inserted into the socket 8 along with the socket 7 to ensure the sealing between the socket 7 and the socket 8 after plugging.

[0040] In this embodiment, when installing the large-flux pleated filter element 6, open the eyebolt fastener 16, remove the sealing cover 17, and allow the lower tooth plate 64 of the large-flux pleated filter element 6 to coincide with the lower notch 32; then press down the large-flux pleated filter element 6 so that the lower tooth plate 64 passes through the lower notch 32 and enters the annular groove 31. At this time, the large-flux pleated filter element 6 is rotated clockwise by the handle 61, so that the lower tooth plate 64 is screwed tightly into the annular groove 31;

[0041] Then put on the sealing cover 17. While putting on the sealing cover 17, insert the support sleeve 4 into the top end of the corresponding large-flux pleated filter element 6 until the upper sealing cover 17 contacts the filter cylinder 1.

[0042] Finally, the eyebolt fastener 16 is fixed to complete the installation of the large-flux pleated filter element 6 .

[0043] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the scope of protection of the utility model.

Claims

1. A security filter, characterized by: The invention comprises a filter cylinder (1) and a large-flux folded filter element (6), wherein: a lower sealing partition (2) is fixedly installed at the lower part of the filter cylinder (1), and two valve core mounting seats (3) are evenly fixedly installed on the lower sealing partition (2); a sealing cover (17) is detachably fixedly installed at the top end of the filter cylinder (1); the large-flux folded filter element (6) is detachably fixedly installed in the filter cylinder (1) through the sealing cover (17) and the valve core mounting seat (3), and the top end of the large-flux folded filter element (6) is connected to the sealing cover (17) by plugging and unplugging; the large-flux folded filter element (6) is connected to the corresponding valve core mounting seat (3).

2. A security filter according to claim 1, characterized in that: A support sleeve (4) corresponding to the large-flux folded filter element (6) is fixedly installed inside the sealing cover (17), and the support sleeve (4) is plug-in connected to the top end of the corresponding large-flux folded filter element (6). The support sleeve (4) is used to support and position the large-flux folded filter element (6) to ensure the stability of the large-flux folded filter element (6) after installation.

3. A security filter according to claim 2, characterized in that: An annular groove (31) is provided on the inner peripheral surface of the valve core mounting seat (3), and a lower notch (32) is provided on each side of the upper end of the valve core mounting seat (3); the lower notch (32) is located above the annular groove (31), and the lower notch (32) is communicated with the annular groove (31); the bottom end of the large-flux folded filter element (6) is rotatably engaged with the annular groove (31) through the lower notch (32).

4. A security filter according to any one of claims 1 to 3, characterized in that: The top end of the large-flux folded filter element (6) is a closed end, and a connecting ring (63) is fixedly installed at the bottom end of the large-flux folded filter element (6), and the connecting ring (63) is communicated with the interior of the large-flux folded filter element (6); a filter element skeleton (5) is detachably fixedly installed inside the large-flux folded filter element (6), and the bottom end of the filter element skeleton (5) extends from the connecting ring (63), and the bottom end of the filter element skeleton (5) is threadedly connected to the valve core mounting seat (3); the connecting ring (63) and the valve core mounting seat (3) are clamped together.

5. A security filter according to claim 4, characterized in that: A lower tooth plate (64) is fixedly mounted on each side of the bottom end of the connecting ring (63), and the lower tooth plate (64) is engaged with the ring groove (31) via the lower notch (32).

6. A security filter according to claim 4, characterized in that: An external threaded joint (51) is fixedly mounted on the bottom end of the filter core skeleton (5), and the filter core skeleton (5) is detachably fixedly connected to the valve core mounting seat (3) via the external threaded joint (51).

7. The security filter according to claim 1, wherein: A water inlet (9) is fixedly mounted on one side above the filter cylinder (1), and a water outlet (10) is fixedly mounted on one side below the filter cylinder (1); a baffle (13) is fixedly mounted at a position corresponding to the water inlet (9) inside the filter cylinder (1); the water inlet (9) and the water outlet (10) are both communicated with the interior of the filter cylinder (1), and the water inlet (9) is located above the lower sealing partition (2), and the water outlet (10) is located below the lower sealing partition (2); the water outlet (10) is communicated with the valve core mounting seat (3).

8. A security filter according to claim 1 or 7, characterized in that: An integrated socket (7) is provided at the port of the sealing cover (17), and the socket (7) is connected to the top end of the filter cylinder (1) by plugging and unplugging.

9. The security filter according to claim 8, characterized in that: A socket (8) corresponding to the socket (7) is provided at the top end of the filter cylinder (1), and the socket (7) and the socket (8) are plugged into each other.

10. The security filter according to claim 9, characterized in that: A plurality of sealing rings (18) are evenly distributed and fixedly sleeved on the outer peripheral surface of the socket (7), and the sealing rings (18) are inserted into the socket (8) following the socket (7) to ensure the sealing between the socket (7) and the socket (8) after plugging.

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