Filtering ball valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a filtering ball valve. Comprising a valve body, a valve ball, a valve rod, valve ball sealing rings located on the two sides of the valve ball and axially arranged in the valve body and a filtering pipe body obliquely arranged on the valve body, a filtering assembly is inserted into the filtering pipe body, and the filtering assembly comprises an inner filtering cylinder, a folding filtering cylinder and an outer filtering cylinder which are sequentially arranged in a sleeved mode from inside to outside; wherein a first positioning ring groove is formed in the water outlet, the folding filter cartridge is of a barrel-shaped structure which is continuously folded in an S shape, a plurality of positioning grooves are formed in the folding filter cartridge, and a first elastic sealing ring and a second elastic sealing ring are clamped to the two ends of the filter assembly respectively; media are sequentially filtered through the inner filter cartridge, the folding filter cartridge and the outer filter cartridge, the filtering effect of the media is improved, the filtering area is increased through the folding filter cartridge, and the filtering speed is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and in particular relates to a filtering ball valve. Background Art

[0002] At present, some ball valves are equipped with filter components at an angle to filter impurities in the flowing medium, improve the cleanliness of the medium, and prevent impurities in the medium from accumulating on the valve ball sealing ring, causing rotational wear of the valve ball sealing ring.

[0003] In the prior art, the filter assembly of the ball valve is usually a layer of cylindrical filter screen, which has poor filtering effect. The existing filter assembly also has a structure with multiple layers of filter screens to improve the filtering effect, but the multiple layers of filter screens will increase the flow resistance of the medium and slow the filtering speed. Utility Model Content

[0004] The purpose of the utility model is to provide a filter ball valve to solve the above-mentioned technical problems, which improves the filtering effect of the medium by filtering the medium through an inner filter cylinder, a folded filter cylinder and an outer filter cylinder in sequence, and the folded filter cylinder increases the filtering area and improves the filtering speed.

[0005] In view of this, the utility model provides a filter ball valve, comprising a valve body, a valve ball arranged in the valve body, a valve stem connected to the valve ball, valve ball sealing rings located on both sides of the valve ball and axially arranged in the valve body, and a filter tube body obliquely arranged on the valve body, a filter assembly is inserted in the filter tube body, and the filter assembly comprises an inner filter cartridge, a folded filter cartridge and an outer filter cartridge which are sequentially sleeved from the inside to the outside;

[0006] Among them, a water inlet is arranged on the side wall of the filter tube body, a water outlet is arranged on the top of the filter tube body, a first positioning ring groove is arranged on the water outlet, the folded filter cartridge is a cylindrical structure with a continuous S-shaped folding arrangement, and is formed with a plurality of positioning grooves, and the two ends of the filter assembly are respectively clamped with a first elastic sealing ring and a second elastic sealing ring, the first elastic sealing ring is arranged in the first positioning ring groove, and the second elastic sealing ring abuts against the bottom of the filter tube body, and a plurality of positioning protrusions are arranged on the bottom of the first elastic sealing ring and the top of the second elastic sealing ring, and the positioning protrusions are inserted into the positioning grooves of the folded filter cartridge.

[0007] In the above scheme, further, two first arc-shaped convex ring portions are arranged on the outer circumferential walls of the first elastic sealing ring and the second elastic sealing ring in sequence from top to bottom, and the two first arc-shaped convex ring portions are both in contact with the inner circumferential wall of the filter tube body, and a first arc-shaped concave ring portion is formed between the two first arc-shaped convex ring portions.

[0008] In the above scheme, further, second positioning ring grooves are respectively provided on both sides of the inner wall of the valve body close to the valve ball, the valve ball is arranged in the second positioning ring grooves, and a second arc-shaped convex ring portion that contacts the surface of the valve ball is provided on one side of the valve ball sealing ring close to the valve ball.

[0009] In the above solution, further, a third arc-shaped convex ring portion is provided on the outer peripheral wall of the valve ball sealing ring, which abuts against the inner peripheral wall of the second positioning ring groove.

[0010] In the above scheme, further, two fourth arc-shaped convex ring portions are sequentially arranged from inside to outside on the side of the valve ball sealing ring away from the valve ball, and the two fourth arc-shaped convex ring portions both abut against the side of the second positioning ring groove away from the valve ball, and a second arc-shaped concave ring portion is formed between the two fourth arc-shaped convex ring portions.

[0011] In the above scheme, further, the inner circumferential walls at both ends of the inner filter cylinder are hinged with a sheet body through a hinge shaft, the hinge shaft is provided with a torsion spring, the sheet body is provided with a clamping block, the inner circumferential walls of the first elastic sealing ring and the second elastic sealing ring are provided with clamping grooves, and the clamping block is clamped in the clamping groove.

[0012] In the above solution, further, a plurality of magnet pieces are arranged on the inner wall of the tube body.

[0013] The beneficial effects of the utility model are:

[0014] 1. The medium is filtered through the inner filter cartridge, folded filter cartridge and outer filter cartridge in sequence, which improves the filtering effect of the medium. The folded filter cartridge increases the filtering area and improves the filtering speed.

[0015] 2. The two first arc-shaped convex ring parts are arranged on the first elastic sealing ring and the second elastic sealing ring to improve the sealing performance between the two ends of the filter assembly and the peripheral wall of the filter tube body;

[0016] 3. The valve ball sealing ring is provided with a second arc-shaped convex ring portion, a third arc-shaped convex ring portion and a third arc-shaped convex ring portion, which can increase the sealing between the valve ball and the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the top view of the structure of the filter assembly of the utility model being clamped on the second elastic sealing ring;

[0020] Figure 4 The utility model Figure 2 A schematic diagram of the structure at A;

[0021] Figure 5 The utility model Figure 2 Schematic diagram of the structure at B.

[0022] The symbols in the figure are:

[0023] 1. Valve ball sealing ring; 2. Filter tube body; 3. Filter assembly; 31. Inner filter cartridge; 32. Folding filter cartridge; 33. Outer filter cartridge; 4. Water inlet; 5. Water outlet; 6. Positioning ring groove; 7. Positioning groove; 8. First elastic sealing ring; 9. Second elastic sealing ring; 10. Positioning convex portion; 11. First arc-shaped convex ring portion; 12. First arc-shaped concave ring portion; 13. Second positioning ring groove; 14. Second arc-shaped convex ring portion; 15. Third arc-shaped convex ring portion; 16. Fourth arc-shaped convex ring portion; 17. Second arc-shaped concave ring portion; 18. Articulated shaft; 19. Sheet body; 20. Torsion spring; 21. Snap-in block; 22. Snap-in groove; 23. Magnet sheet. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0025] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0026] Embodiment 1:

[0027] This embodiment provides a filter ball valve, including:

[0028] It includes a valve body, a valve ball disposed in the valve body, a valve stem connected to the valve ball, a valve ball sealing ring 1 located on both sides of the valve ball and axially disposed in the valve body, and a filter tube body 2 obliquely disposed on the valve body, a filter assembly 3 is inserted in the filter tube body 2, and the filter assembly 3 includes an inner filter cartridge 31, a folded filter cartridge 32 and an outer filter cartridge 33 which are sequentially sleeved from the inside to the outside;

[0029] Among them, a water inlet 4 is arranged on the side wall of the filter tube body 2, a water outlet 5 is arranged on the top of the filter tube body 2, a first positioning ring groove 6 is arranged on the water outlet 5, the folded filter cartridge 32 is a cylindrical structure with a continuous S-shaped folding arrangement, and is formed with a plurality of positioning grooves 7, and the two ends of the filter assembly 3 are respectively clamped with a first elastic sealing ring 8 and a second elastic sealing ring 9, the first elastic sealing ring 8 is arranged in the first positioning ring groove 6, and the second elastic sealing ring 9 is in contact with the bottom of the filter tube body 2, and a plurality of positioning protrusions 10 are arranged at the bottom of the first elastic sealing ring 8 and the top of the second elastic sealing ring 9, and the positioning protrusions 10 are inserted into the positioning grooves 7 of the folded filter cartridge 32.

[0030] In this technical solution, if Figure 2 As shown, the valve stem is rotated to rotate the valve ball, and the flowing medium enters the filter assembly 3 from the water inlet 4. An annular cavity is formed between the outer filter cartridge 33 and the filter tube body 2. The medium is filtered in sequence through the annular cavity, the outer filter cartridge 33, the folded filter cartridge 32 and the inner filter cartridge 31. The filtered flowing medium enters the inner filter cartridge 31 and flows out of the valve body from the water outlet 5. The valve ball sealing ring 1 is used to seal between the valve ball and the valve body to prevent leakage of the medium when the ball valve is closed.

[0031] The inner filter cartridge 31 and the outer filter cartridge 33 can both be cylindrical stainless steel filter screens, which not only play a filtering role but also play a supporting role for the pleated filter cartridge 32. The pore sizes of the inner filter cartridge 31, the pleated filter cartridge 32 and the outer filter cartridge 33 increase in sequence, and the medium is filtered through three layers, which improves the cleanliness of the medium and the filtering effect of the medium.

[0032] The folded filter cartridge 32 can be a multi-layer sintered metal mesh, and the folded filter cartridge 32 is a cylindrical structure with continuous S-shaped folding, which increases the filtration area, improves the filtration speed and filtration effect. The folded filter cartridge 32 can also be a cylindrical structure with continuous Z-shaped folding.

[0033] The first elastic sealing ring 8 and the second elastic sealing ring 9 are used to seal the two ends of the filter assembly 3 and also seal the filter assembly 3 and the inner peripheral wall of the filter tube body 2. The first elastic sealing ring 8 and the second elastic sealing ring 9 can be made of polytetrafluoroethylene.

[0034] like Figure 4As shown, snap ring grooves can be set at both ends of the first elastic sealing ring 8 and the second elastic sealing ring 9, and both ends of the outer filter cartridge 33 and the inner filter cartridge 31 can be snapped to the first elastic sealing ring 8 and the second elastic sealing ring 9 through the snap ring grooves, thereby fixing the outer filter cartridge 33 and the inner filter cartridge 31 and facilitating the installation, disassembly, replacement and cleaning of the first elastic sealing ring 8 and the second elastic sealing ring 9.

[0035] like Figure 3 As shown, the folded filter cartridge 32 is inserted into the cavity between the outer filter cartridge 33 and the inner filter cartridge 31, and a plurality of positioning protrusions 10 are provided at the bottom of the first elastic sealing ring 8 and the top of the second elastic sealing ring 9. The positioning protrusions 10 are inserted into the positioning grooves 7 of the folded filter cartridge 32 to position the folded filter cartridge 32, prevent the folded filter cartridge 32 from rotating between the outer filter cartridge 33 and the inner filter cartridge 31, and facilitate the installation, disassembly, replacement and cleaning of the folded filter cartridge 32.

[0036] Embodiment 2:

[0037] This embodiment provides a filter ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0038] Two first arcuate convex ring portions 11 are sequentially arranged on the outer circumferential walls of the first elastic sealing ring 8 and the second elastic sealing ring 9 from top to bottom. The two first arcuate convex ring portions 11 are both in contact with the inner circumferential wall of the filter tube body 2, and a first arcuate concave ring portion 12 is formed between the two first arcuate convex ring portions 11.

[0039] In the present technical solution, the surface of the first arc-shaped convex ring portion 11 is arc-shaped, which can reduce the friction between the first arc-shaped convex ring portion 11 and the inner peripheral wall of the filter tube body 2, and is easy to install.

[0040] A first arc-shaped concave ring portion 12 is formed between the two first arc-shaped convex ring portions 11, which can increase the radial deformation degree of the first elastic sealing ring 8 and the second elastic sealing ring 9. The first elastic sealing ring 8 is arranged in the first positioning ring groove 6, and the second elastic sealing ring 9 abuts against the bottom of the filter tube body 2, so that the first elastic sealing ring 8 and the second elastic sealing ring 9 generate elastic repulsion, thereby improving the sealing performance.

[0041] Embodiment 3:

[0042] This embodiment provides a filter ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0043] The inner wall of the valve body is provided with second positioning ring grooves 136 on both sides close to the valve ball. The valve ball is arranged in the second positioning ring grooves 136. The valve ball sealing ring 1 is provided with a second arc-shaped convex ring portion 14 which abuts against the surface of the valve ball on one side close to the valve ball.

[0044] In the present technical solution, the surface of the second arc-shaped convex ring portion 14 that contacts the valve ball is an arc-shaped surface, which can reduce the contact area between the valve ball and the second arc-shaped convex ring portion 14, reduce friction, and reduce the resistance to the rotation of the valve ball. It can also increase the elastic repulsion of the valve ball sealing ring 1 in the axial direction, thereby improving the sealing performance between the valve ball sealing ring 1 and the valve ball.

[0045] Embodiment 4:

[0046] This embodiment provides a filter ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0047] The outer peripheral wall of the valve ball sealing ring 1 is provided with a third arc-shaped convex ring portion 15 which abuts against the inner peripheral wall of the second positioning ring groove 136 .

[0048] In the present technical solution, the surface of the third arc-shaped convex ring portion 15 is an arc-shaped surface, and the outer circumferential wall of the valve ball sealing ring 1 is provided with a contact with the inner circumferential wall of the second positioning ring groove 136, which can increase the elastic repulsive force of the valve ball sealing ring 1 in the axial direction, thereby improving the sealing between the valve ball sealing ring 1 and the second positioning ring groove 136.

[0049] Embodiment 5:

[0050] This embodiment provides a filter ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0051] The valve ball sealing ring 1 is provided with two fourth arc-shaped convex ring parts 16 from inside to outside on the side away from the valve ball. The two fourth arc-shaped convex ring parts 16 both abut against the side of the second positioning ring groove 136 away from the valve ball, and a second arc-shaped concave ring part 17 is formed between the two fourth arc-shaped convex ring parts 16.

[0052] In the present technical solution, the surfaces of the two fourth arc-shaped convex ring portions 16 are both arc-shaped surfaces, and the two fourth arc-shaped convex ring portions 16 are in contact with the side of the second positioning ring groove 136 away from the valve ball, which can increase the radial elastic repulsion of the valve ball sealing ring 1, thereby improving the sealing between the valve ball sealing ring 1 and the second positioning ring groove 136.

[0053] Embodiment 6:

[0054] This embodiment provides a filter ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0055] The inner circumferential walls at both ends of the inner filter cartridge 31 are hinged with a sheet body 19 via a hinge shaft 18, the hinge shaft 18 is provided with a torsion spring 20, the sheet body 19 is provided with a clamping block 21, the inner circumferential walls of the first elastic sealing ring 8 and the second elastic sealing ring 9 are provided with a clamping groove 22, and the clamping block 21 is clamped in the clamping groove 22.

[0056] In the present technical solution, the inner circumferential walls at both ends of the inner filter cartridge 31 are hinged to the sheet body 19 via a hinge shaft 18, on which a torsion spring 20 is provided. The torsion spring 20 includes two extended ends, which respectively abut against the inner circumferential wall of the inner filter cartridge 31 and the inner side of the sheet body 19, so that the sheet body 19 can be reset after being pressed.

[0057] The clamping block 21 is clamped in the clamping groove 22 to fix the first elastic sealing ring 8 and the second elastic sealing ring 9 on the inner filter cartridge 31 , and the filter assembly 3 can also be taken out of the filter tube body 2 as a whole.

[0058] The sheet 19 is pressed on one end away from both ends of the inner filter cartridge 31 to rotate the sheet 19 on the hinge shaft 18. At this time, the clamping block 21 is disengaged from the clamping groove 22, and the first elastic sealing ring 8 and the second elastic sealing ring 9 can be removed.

[0059] Embodiment 7:

[0060] This embodiment provides a filter ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0061] A plurality of magnet pieces 23 are arranged on the inner wall of the tube.

[0062] In the present technical solution, a receiving groove can be provided on the inner wall of the tube body, and a plurality of magnet pieces 23 can be pasted in the receiving groove. The plurality of magnet pieces 23 are used to absorb magnetic impurities in the medium, such as iron metal impurities.

[0063] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A filter ball valve, characterized in that: The invention comprises a valve body, a valve ball arranged in the valve body, a valve stem connected to the valve ball, valve ball sealing rings (1) located on both sides of the valve ball and axially arranged in the valve body, and a filter tube body (2) obliquely arranged on the valve body, wherein a filter assembly (3) is inserted in the filter tube body (2), and the filter assembly (3) comprises an inner filter cartridge (31), a folded filter cartridge (32), and an outer filter cartridge (33) which are sequentially sleeved from the inside to the outside; The filter tube body (2) is provided with a water inlet (4) on its side wall, the filter tube body (2) is provided with a water outlet (5) on its top end, the water outlet (5) is provided with a first positioning ring groove (6), the folded filter cartridge (32) is a cylindrical structure folded in a continuous S shape and formed with a plurality of positioning grooves (7), the two ends of the filter assembly (3) are respectively clamped with a first elastic sealing ring (8) and a second elastic sealing ring (9), the first elastic sealing ring (8) is arranged in the first positioning ring groove (6), the second elastic sealing ring (9) abuts against the bottom of the filter tube body (2), the bottom of the first elastic sealing ring (8) and the top of the second elastic sealing ring (9) are both provided with a plurality of positioning protrusions (10), the positioning protrusions (10) are inserted into the positioning grooves (7) of the folded filter cartridge (32).

2. A filter ball valve according to claim 1, characterized in that: Two first arc-shaped convex ring portions (11) are arranged on the outer peripheral walls of the first elastic sealing ring (8) and the second elastic sealing ring (9) in sequence from top to bottom, the two first arc-shaped convex ring portions (11) are both in contact with the inner peripheral wall of the filter tube body (2), and a first arc-shaped concave ring portion (12) is formed between the two first arc-shaped convex ring portions (11).

3. A filter ball valve according to claim 1, characterized in that: Second positioning ring grooves (13) are respectively arranged on both sides of the inner peripheral wall of the valve body close to the valve ball, the valve ball is arranged in the second positioning ring grooves (13), and a second arc-shaped convex ring portion (14) that contacts the surface of the valve ball is arranged on one side of the valve ball sealing ring (1) close to the valve ball.

4. A filter ball valve according to claim 3, characterized in that: The outer peripheral wall of the valve ball sealing ring (1) is provided with a third arc-shaped convex ring portion (15) which abuts against the inner peripheral wall of the second positioning ring groove (13).

5. A filter ball valve according to claim 3, characterized in that: The valve ball sealing ring (1) is provided with two fourth arc-shaped convex ring parts (16) in sequence from the inside to the outside on the side away from the valve ball, and the two fourth arc-shaped convex ring parts (16) both abut against the side of the second positioning ring groove (13) away from the valve ball, and a second arc-shaped concave ring part (17) is formed between the two fourth arc-shaped convex ring parts (16).

6. A filter ball valve according to claim 1, characterized in that: The inner circumferential walls at both ends of the inner filter cartridge (31) are hingedly connected to a sheet body (19) via a hinge shaft (18), the hinge shaft (18) is provided with a torsion spring (20), the sheet body (19) is provided with a clamping block (21), the inner circumferential walls of the first elastic sealing ring (8) and the second elastic sealing ring (9) are provided with clamping grooves (22), and the clamping block (21) is clamped in the clamping groove (22).

7. A filter ball valve according to claim 1, characterized in that: A plurality of magnet pieces (23) are arranged on the inner wall of the tube.

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