Filter sealing structure

Abstract

The utility model belongs to the technical field of filters, and particularly relates to a filter sealing structure which comprises a filter main body consisting of an outer shell and a filter element, water permeable holes are uniformly formed in the outer shell, a top plate and a bottom plate are respectively fixed at the top end and the bottom end of the filter element, a water inlet hole is formed in the top plate, and the filter sealing structure also comprises a top cover, the top cover is fixedly connected with the top plate through the fixing mechanism; a positioning ring sleeve; the first rubber sealing ring is positioned in the positioning ring sleeve; the positioning insertion pipe is fixed on the bottom surface of the top cover and is embedded into the positioning ring sleeve; the top cover is fixedly connected with the top plate through the fixing mechanism, the connection stability of the outer shell and the filter element can be improved, after the top cover is installed, a positioning insertion pipe is embedded into a positioning ring sleeve and extrudes a first rubber sealing ring, the top cover extrudes a second rubber sealing ring, a water retaining convex ring is matched, the connection sealing performance of the outer shell and the filter element is greatly improved, and water leakage is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of filters, and in particular relates to a filter sealing structure. Background Art

[0002] The filter is an indispensable device on the pipeline conveying the medium. It is usually installed at the inlet end of the pressure reducing valve, pressure relief valve, water level valve and other equipment of the filter.

[0003] At present, commonly used filters, such as the Chinese utility model patent with authorization announcement number CN219517977U, discloses "a filter element assembly for water purification equipment", including an outer shell, a lower connecting plate and a top cover. A lower connecting plate is arranged at the bottom end of the inner part of the outer shell, a drain outlet is fixed on one side of the bottom end of the outer shell, and a sewage discharge structure is arranged at the bottom end of the lower connecting plate. Positioning structures are arranged on both sides of the upper connecting plate to facilitate the cleaning of blocked impurities and ensure the sewage discharge effect.

[0004] Although the filters in the prior art are easy to clean, in actual use, the sealing performance at the connection port between the filter element body and the shell is poor. After long-term use, under the impact of the fluid, it is easy to cause the filter element body and the shell to shift, resulting in sewage leakage.

[0005] In order to solve the above problems, a filter sealing structure is proposed in the present application. Utility Model Content

[0006] In order to solve the above problems existing in the prior art, the utility model provides a filter sealing structure, which has the characteristics of easy use and good sealing effect.

[0007] To achieve the above object, the utility model provides the following technical solution: a filter sealing structure, comprising a filter body composed of an outer shell and a filter element, wherein water permeable holes are evenly opened on the outer shell, a top plate and a bottom plate are respectively fixed to the top and bottom ends of the filter element, and a water inlet hole is opened on the top plate, and further comprising:

[0008] A top cover, which is detachably mounted on the top of the outer shell and is provided with a water inlet;

[0009] A fixing mechanism, wherein the top cover is fixedly connected to the top plate by means of the fixing mechanism;

[0010] A positioning ring sleeve, wherein a positioning ring hole is opened on the top plate, and the positioning ring sleeve is fixed on the bottom surface of the top plate at a position corresponding to the positioning ring hole;

[0011] A No. 1 rubber sealing ring, the No. 1 rubber sealing ring is located in the positioning ring sleeve;

[0012] A positioning cannula is fixed to the bottom surface of the top cover and embedded in the positioning ring sleeve.

[0013] As a preferred technical solution of the utility model, the fixing mechanism includes:

[0014] An internally threaded sleeve, the internally threaded sleeve being fixed on the top plate;

[0015] A locking bolt is inserted through the top cover and then screwed into the internal threaded sleeve by thread engagement.

[0016] As a preferred technical solution of the utility model, the cross-section of the positioning ring sleeve is "U"-shaped, and the width of the positioning ring hole is equal to the groove width of the positioning ring sleeve, and the outer wall of the positioning tube fits the inner wall of the positioning ring hole and the positioning ring sleeve.

[0017] As a preferred technical solution of the utility model, it also includes:

[0018] A water retaining convex ring is fixed on the top plate, and a No. 2 rubber sealing ring is fixed on the top end of the water retaining convex ring.

[0019] As a preferred technical solution of the utility model, the top cover is installed on the top of the outer shell by screwing.

[0020] As a preferred technical solution of the utility model, anti-slip patterns are provided on the circumferential surface of the top cover.

[0021] As a preferred technical solution of the utility model, a hollow positioning convex sleeve protruding upward is provided on the bottom plate, and a positioning convex block is fixed on the inner bottom surface of the outer shell and embedded in the positioning convex sleeve.

[0022] As a preferred technical solution of the utility model, the outer shell is a stainless steel cylindrical member, and the top end of the outer shell is an open end and the bottom end is a closed end.

[0023] As a preferred technical solution of the utility model, the filter element is one of polypropylene ultrafine fiber, polytetrafluoroethylene or stainless steel fiber sintered felt.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] In the utility model, the top cover is fixedly connected to the top plate by a fixing mechanism, which can improve the stability of the connection between the outer shell and the filter element. After the top cover is installed, the positioning tube is embedded in the positioning ring sleeve and squeezes the No. 1 rubber sealing ring. The top cover squeezes the No. 2 rubber sealing ring and cooperates with the water retaining convex ring, which greatly improves the sealing of the connection between the outer shell and the filter element and avoids water leakage.

[0026] Other additional advantages and beneficial effects of the present application will be given in part in the following description, and in part will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 It is a structural schematic diagram of the utility model;

[0029] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0030] Figure 3 For this utility model Figure 2 A in the figure is an enlarged structural diagram.

[0031] In the figure: 1. filter body; 11. outer shell; 111. water permeable hole; 112. positioning convex block; 12. top cover; 121. water inlet; 122. anti-slip pattern; 123. positioning insert; 13. filter element; 131. top plate; 1311. water inlet; 1312. positioning ring hole; 1313. positioning ring sleeve; 1314. water retaining convex ring; 132. bottom plate; 1321. positioning convex sleeve; 2. fixing mechanism; 21. locking bolt; 22. internal threaded sleeve; 3. No. 1 rubber sealing ring; 4. No. 2 rubber sealing ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Example 1

[0034] See also Figure 1-Figure 3 The utility model provides the following technical solutions: a filter sealing structure, including a filter body 1 composed of an outer shell 11 and a filter element 13, water permeable holes 111 are evenly opened on the outer shell 11, a top plate 131 and a bottom plate 132 are respectively fixed at the top and bottom ends of the filter element 13, and a water inlet hole 1311 is opened on the top plate 131, and also includes: a top cover 12, a fixing mechanism 2, a positioning ring sleeve 1313, a No. 1 rubber sealing ring 3 and a positioning insert 123.

[0035] Specifically, by Figure 1-Figure 3 As shown, the top cover 12 is detachably mounted on the top of the outer shell 11, and a water inlet 121 is provided on the top cover 12. The top cover 12 is fixedly connected to the top plate 131 by a fixing mechanism 2. A positioning ring hole 1312 is provided on the top plate 131. A positioning ring sleeve 1313 is fixed to the bottom surface of the top plate 131 at a position corresponding to the positioning ring hole 1312. The No. 1 rubber sealing ring 3 is located in the positioning ring sleeve 1313. The positioning insert 123 is fixed to the bottom surface of the top cover 12 and embedded in the positioning ring. Therefore, when connecting the outer shell 11 and the filter element 13, the filter element 13 is placed in the outer shell 11, and then the top cover 12 is installed on the top of the outer shell 11. At this time, the positioning tube 123 is embedded in the positioning ring sleeve 1313 and squeezes the No. 1 rubber sealing ring 3, which greatly improves the sealing performance of the connection between the outer shell 11 and the filter element 13 and avoids water leakage. Finally, the fixing mechanism 2 is used to fix the top cover 12 and the top plate 131 to improve the stability of the connection between the outer shell 11 and the filter element 13.

[0036] Optionally, by Figure 1-Figure 3 As shown, in this embodiment, the fixing mechanism 2 includes: an internal threaded sleeve 22 and a locking bolt 21. The internal threaded sleeve 22 is fixed on the top plate 131. The locking bolt 21 penetrates the top cover 12 and is screwed into the internal threaded sleeve 22 by threaded engagement. Tightening the locking bolt 21 can stably connect the top cover 12 and the top plate 131.

[0037] Preferably, by Figure 1-Figure 3 As shown, in this embodiment, the cross-section of the positioning ring sleeve 1313 is "U"-shaped, and the width of the positioning ring hole 1312 is equal to the groove width of the positioning ring sleeve 1313, and the outer wall of the positioning tube 123 fits the inner wall of the positioning ring hole 1312 and the positioning ring sleeve 1313, ensuring that the positioning tube 123 will not be displaced after being embedded in the positioning ring sleeve 1313, further improving the stability of the connection between the outer shell 11 and the filter element 13.

[0038] Preferably, by Figure 1-Figure 3 As shown, in this embodiment, it also includes: a water retaining convex ring 1314, which is fixed on the top plate 131, and a No. 2 rubber sealing ring 4 is fixed on the top of the water retaining convex ring 1314. The water retaining convex ring 1314 can prevent sewage from overflowing. After the top cover 12 is installed, the top cover 12 will compress the No. 2 rubber sealing ring 4, further improving the sealing performance of the connection between the outer shell 11 and the filter element 13 to avoid water leakage.

[0039] Optionally, by Figure 1 and Figure 2 As shown, in this embodiment, the top cover 12 is installed on the top of the outer shell 11 by screwing, which is convenient to assemble, has high stability, and is also easy to disassemble the top cover 12.

[0040] Preferably, by Figure 1and Figure 2 As shown, in this embodiment, the circumferential surface of the top cover 12 is provided with anti-slip grooves 122 to increase the friction between the hand and the circumferential surface of the top cover 12, making the rotation of the top cover 12 more stable and preventing the hand from slipping.

[0041] Optionally, by Figure 1-Figure 3 As shown, in this embodiment, the outer shell 11 is a stainless steel cylindrical member, and the top end of the outer shell 11 is an open end, the bottom end is a closed end, and the top end of the outer shell 11 is a water inlet end.

[0042] It should be noted that the filter body 1 shown in the accompanying drawings of the present invention is only for illustrative purposes and is not intended to limit the present invention. The filter body 1 may also be of other shapes and materials. For example, the filter body 1 may also be square. When the filter body 1 is square, cylindrical components may be added to the top and bottom ends of the filter body 1 to continue to realize the threaded installation of the top cover 12. The top cover 12 may also be fixed in other conventional ways, such as using bolts.

[0043] Optionally, by Figure 1 and Figure 2 As shown, in this embodiment, the filter element 13 is one of polypropylene ultrafine fiber, polytetrafluoroethylene or stainless steel fiber sintered felt. The user can select a suitable type of filter element 13 according to actual use needs. The polypropylene ultrafine fiber filter element 13 is also called PP filter element 13, which can intercept impurities of different particle sizes. The polytetrafluoroethylene filter element 13 has the advantages of small size, large filtration area, high precision, etc. The stainless steel fiber sintered felt filter element 13 is conducive to use in ultra-low temperature, high temperature and high pressure environments.

[0044] Example 2

[0045] Optionally, by Figure 1 and Figure 2 As shown, in this embodiment, a hollow positioning boss 1321 protruding upward is provided on the bottom plate 132, and a positioning boss 112 is fixed to the inner bottom surface of the outer shell 11 and embedded in the positioning boss 1321. When the outer shell 11 and the filter element 13 are assembled, the positioning boss 112 is embedded in the positioning boss 1321 to position the filter element 13 and further improve the stability of the installation of the filter element 13.

[0046] It should be noted that the positioning protrusion 112 can be fixed by welding. For the production of the positioning protrusion 1321, a hole can be firstly opened on the base plate 132, and then the hollow positioning protrusion 1321 can be welded at the position of the hole. When the size of the hollow positioning protrusion 1321 is not large, the hollow positioning protrusion 1321 can also be directly stamped.

[0047] Components not described in detail herein are prior art.

[0048] Working principle and use process of the utility model: The filter sealing structure of the utility model, when connecting the outer shell 11 and the filter element 13, the filter element 13 is placed in the outer shell 11, and then the top cover 12 is installed on the top of the outer shell 11. At this time, the positioning cannula 123 is embedded in the positioning ring sleeve 1313 and squeezes the No. 1 rubber sealing ring 3, which greatly improves the sealing performance of the connection between the outer shell 11 and the filter element 13 to avoid water leakage. Finally, the fixing mechanism 2 is used to fix the top cover 12 and the top plate 131 to improve the stability of the connection between the outer shell 11 and the filter element 13;

[0049] In addition, after the top cover 12 is installed, the top cover 12 will compress the second rubber seal ring 4, further improving the sealing performance of the connection between the outer shell 11 and the filter element 13 to prevent water leakage;

[0050] After the outer shell 11 and the filter element 13 are connected, the locking bolt 21 passes through the top cover 12 and is screwed into the internal threaded sleeve 22 by threading. Tightening the locking bolt 21 can stably connect the top cover 12 and the top plate 131, and the positioning protrusion 112 is embedded in the positioning protrusion 1321 to position the filter element 13, thereby improving the stability of the installation of the filter element 13 and improving the filter element 13's ability to resist fluid impact.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A filter sealing structure, comprising a filter body (1) consisting of an outer shell (11) and a filter element (13), wherein water permeable holes (111) are evenly opened on the outer shell (11), a top plate (131) and a bottom plate (132) are respectively fixed at the top and bottom ends of the filter element (13), and a water inlet hole (1311) is opened on the top plate (131), characterized in that: Also includes: A top cover (12), the top cover (12) being detachably mounted on the top end of the outer shell (11), and a water inlet (121) being provided on the top cover (12); A fixing mechanism (2), wherein the top cover (12) is fixedly connected to the top plate (131) by means of the fixing mechanism (2); A positioning ring sleeve (1313), wherein a positioning ring hole (1312) is opened on the top plate (131), and the positioning ring sleeve (1313) is fixed on the bottom surface of the top plate (131) at a position corresponding to the positioning ring hole (1312); A first rubber sealing ring (3), the first rubber sealing ring (3) being located inside the positioning ring sleeve (1313); A positioning cannula (123), wherein the positioning cannula (123) is fixed to the bottom surface of the top cover (12) and embedded in the positioning ring sleeve (1313).

2. A filter sealing structure according to claim 1, characterized in that: The fixing mechanism (2) comprises: An internally threaded sleeve (22), wherein the internally threaded sleeve (22) is fixed on the top plate (131); A locking bolt (21), wherein the locking bolt (21) penetrates the top cover (12) and is screwed into the internal thread sleeve (22) by means of a threaded screwing method.

3. A filter sealing structure according to claim 1, characterized in that: The cross section of the positioning ring sleeve (1313) is "U"-shaped, and the width of the positioning ring hole (1312) is equal to the groove width of the positioning ring sleeve (1313), and the outer wall of the positioning tube (123) fits the inner wall of the positioning ring hole (1312) and the positioning ring sleeve (1313).

4. A filter sealing structure according to claim 1, characterized in that: Also includes: A water retaining convex ring (1314), wherein the water retaining convex ring (1314) is fixed on the top plate (131), and a No. 2 rubber sealing ring (4) is fixed on the top end of the water retaining convex ring (1314).

5. A filter sealing structure according to claim 1, characterized in that: The top cover (12) is installed on the top end of the outer shell (11) by means of threaded engagement.

6. A filter sealing structure according to claim 5, characterized in that: The top cover (12) has anti-slip grooves (122) on its circumferential surface.

7. A filter sealing structure according to claim 1, characterized in that: The bottom plate (132) is provided with a hollow positioning convex sleeve (1321) protruding upward, and a positioning convex block (112) is fixed on the inner bottom surface of the outer shell (11) and embedded in the positioning convex sleeve (1321).

8. A filter sealing structure according to claim 1, characterized in that: The outer shell (11) is a stainless steel cylindrical member, and the top end of the outer shell (11) is an open end and the bottom end is a closed end.

9. A filter sealing structure according to claim 1, characterized in that: The filter element (13) is one of polypropylene ultrafine fibers, polytetrafluoroethylene or stainless steel fiber sintered felt.

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