Anti-wear hydraulic sealing type butterfly ball valve

Abstract

The utility model relates to the technical field of butterfly ball valves, in particular to an anti-wear hydraulic sealing type butterfly ball valve which comprises a valve body, a water inlet and a water outlet are formed in the two ends of the valve body, a rotatable spherical valve element is arranged in the valve body and used for sealing the interior of the valve body, and the valve body is provided with an anti-wear hydraulic sealing type butterfly ball valve. An elastic ring and a sealing ring are arranged in the valve body, the elastic ring and the sealing ring are fixedly arranged in the valve body, the spherical valve element is arranged in the elastic ring, a rotatable butterfly plate is arranged in the spherical valve element, the butterfly plate is used for sealing the interior of the spherical valve element, and the sealing rings are fixedly arranged in the valve body and located on the two sides of the spherical valve element. And after the sealing ring is abraded, the sealing ring is pushed through the tension of the elastic ring, so that the sealing ring can be tightly attached to the spherical valve element all the time, the sealing ring is more resistant to abrasion, the sealing performance between the spherical valve element and the valve body is greatly improved, and the service life of the butterfly ball valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly ball valves, in particular to an anti-wear hydraulic sealing butterfly ball valve. Background Art

[0002] A ball valve is a valve whose opening and closing part (ball) is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for fluid regulation and control.

[0003] In the prior art, a butterfly ball valve as proposed in patent application number "CN201420501529.7" includes a valve body, a ball, a valve stem, a valve stem sleeve and a valve stem joint. An empty groove is provided between the valve stem joint and the valve stem sleeve, and a roller is provided in the empty groove.

[0004] However, in order to ensure the sealing performance of the ball valve, a sealing gasket is provided in the prior art for use with the ball valve to improve the sealing ability of the valve. However, as the ball valve rotates, the sealing gasket will be worn. After being worn, the sealing gasket cannot fit the ball valve. After long-term use, the sealing performance of the sealing ring will deteriorate, affecting the service life of the ball valve. Utility Model Content

[0005] The utility model aims to provide an anti-wear hydraulic sealing butterfly ball valve to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A wear-resistant hydraulic sealing butterfly ball valve comprises a valve body, with a water inlet and a water outlet arranged at both ends of the valve body, a rotatable spherical valve core arranged in the valve body, the spherical valve core being used to seal the interior of the valve body, and a rotatable butterfly plate arranged inside the spherical valve core being used to seal the interior of the spherical valve core.

[0008] A sealing ring is fixedly installed inside the valve body and on both sides of the spherical valve core, an elastic ring is fixedly installed inside the valve body and on the side of the sealing ring away from the spherical valve core, a fixing ring is fixedly connected inside the valve body and above the spherical valve core, a valve stem is arranged in the fixing ring, the bottom of the valve stem is fixedly connected to the top of the spherical valve core, a control rod is arranged in the valve stem, and the bottom of the control rod is fixedly connected to the top of the butterfly plate.

[0009] Preferably, the top of the valve stem extends to the outside of the valve body and is fixedly connected with an operating handle, and the valve stem is sleeved on the outer surface of the control rod.

[0010] Preferably, an outer ring is fixedly connected to the outer surface of the valve stem and located inside the fixing ring, a limiting arc groove is provided on the outer ring, and a limiting convex rod used in conjunction with the limiting arc groove is fixedly connected to the inner surface of the fixing ring.

[0011] Preferably, a cylindrical groove is opened in the valve stem, a limiting axis is fixedly connected in the cylindrical groove, a spring is fixedly connected to the inner top of the cylindrical groove, a positioning sleeve is arranged in the cylindrical groove, and a positioning ring is fixedly connected to the outer surface of the positioning sleeve.

[0012] Preferably, the positioning sleeve is mounted on the top of the control rod, a rectangular groove is formed on the control rod, and a rectangular plate is fixedly connected inside the positioning sleeve.

[0013] Preferably, two positioning holes are provided on the external ring, an L-shaped flow channel is provided in the valve body, a closed plug is provided at the horizontal end of the L-shaped flow channel, one end of the closed plug is fixedly connected to the pulling shaft, a sealing tube is fixedly connected to the valve body, and the sealing tube is sleeved on the outer surface of the pulling shaft.

[0014] Beneficial effects of the utility model:

[0015] The utility model discloses installing elastic ring and sealing ring in the valve body, the sealing ring realizes the sealing between the spherical valve core and the inside of the valve body; after the sealing ring is worn, the tension of the elastic ring is used to push the sealing ring, so that the sealing ring can always be closely fitted with the spherical valve core, making the sealing ring more wear-resistant, greatly improving the sealing performance between the spherical valve core and the valve body, and prolonging the service life of the butterfly ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

[0018] Figure 2 This utility model Figure 1 A schematic diagram of the structure of the fixed ring part;

[0019] Figure 3 This utility model Figure 1 Schematic diagram of the structure of the middle valve stem;

[0020] Figure 4 This utility model Figure 3 A cross-sectional view of the middle valve stem;

[0021] Figure 5 This utility model Figure 3 Cross-sectional view of the retaining ring.

[0022] The reference numerals in the figures are as follows:

[0023] 1. Valve body, 101. L-shaped flow channel, 2. Water inlet, 3. Water outlet, 4. Spherical valve core, 5. Butterfly plate, 6. Sealing ring, 7. Elastic ring, 8. Fixing ring, 9. Valve stem, 10. Control rod, 11. Operating handle, 12. External ring, 13. Limit arc groove, 14. Limit convex rod, 15. Cylindrical groove, 16. Limit shaft, 17. Spring, 18. Positioning sleeve, 19. Positioning ring, 20. Rectangular groove, 21. Rectangular plate, 22. Positioning hole, 23. Closing plug, 24. Pulling shaft, 25. Sealing tube, 26. Limiting convex plate, 27. Limiting groove. DETAILED DESCRIPTION

[0024] 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 of 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.

[0025] A wear-resistant hydraulic sealing butterfly ball valve comprises a valve body 1, with a water inlet 2 and a water outlet 3 provided at both ends of the valve body 1, a rotatable spherical valve core 4 provided inside the valve body 1, the spherical valve core 4 is used to close the interior of the valve body 1, and a rotatable butterfly plate 5 is provided inside the spherical valve core 4, the butterfly plate 5 is used to close the interior of the spherical valve core 4.

[0026] A sealing ring 6 is fixedly installed inside the valve body 1 and on both sides of the spherical valve core 4, an elastic ring 7 is fixedly installed inside the valve body 1 and on the side of the sealing ring 6 away from the spherical valve core 4, a fixing ring 8 is fixedly connected inside the valve body 1 and above the spherical valve core 4, a valve stem 9 is arranged in the fixing ring 8, the bottom of the valve stem 9 is fixedly connected to the top of the spherical valve core 4, a control rod 10 is arranged in the valve stem 9, and the bottom of the control rod 10 is fixedly connected to the top of the butterfly plate 5.

[0027] like Figure 1 There is an opening on the spherical valve core 4, which can connect the water inlet 2 and the water outlet 3. The butterfly plate 5 is located in the opening of the spherical valve core 4. When the valve stem 9 rotates, the spherical valve core 4 can be driven to rotate. The bottom of the control rod 10 passes through the spherical valve core 4 and is connected to the butterfly plate 5, so that when the control rod 10 rotates, the butterfly plate 5 can be driven to rotate.

[0028] The top of the valve stem 9 extends to the outside of the valve body 1 and is fixedly connected with an operating handle 11 . The valve stem 9 is sleeved on the outer surface of the control rod 10 .

[0029] like Figure 1 and Figure 3 When the operating handle 11 moves, the valve stem 9 can be driven to move.

[0030] The outer surface of the valve stem 9 is fixedly connected to an outer ring 12 located inside the fixing ring 8 , and a limiting arc groove 13 is provided on the outer ring 12 . The inner surface of the fixing ring 8 is fixedly connected to a limiting convex rod 14 used in conjunction with the limiting arc groove 13 .

[0031] like Figure 3 , Figure 4 and Figure 5 By utilizing the cooperation of the limiting arc groove 13 and the limiting convex rod 14, the rotation angle of the circumscribed ring 12 and the valve stem 9 can be limited, so that the rotation angle of the valve stem 9 does not exceed 90 degrees. A limiting convex plate 26 is fixedly connected to the control rod 10, and a limiting groove 27 is provided on the inner side of the valve stem 9. By utilizing the cooperation of the limiting convex plate 26 and the limiting groove 27, the rotation of the control rod 10 relative to the valve stem 9 does not exceed 90 degrees.

[0032] The valve stem 9 is provided with a cylindrical groove 15 , in which a limiting shaft 16 is fixedly connected, a spring 17 is fixedly connected to the inner top of the cylindrical groove 15 , a positioning sleeve 18 is provided in the cylindrical groove 15 , and a positioning ring 19 is fixedly connected to the outer surface of the positioning sleeve 18 .

[0033] like Figure 3 , Figure 4 and Figure 5 The limiting shaft 16 passes through the bottom of the positioning sleeve 18, so that the positioning sleeve 18 cannot rotate, and the spring 17 presses down the positioning ring 19 to ensure the stability of the positioning ring 19 and the positioning sleeve 18.

[0034] The positioning sleeve 18 is sleeved on the top of the control rod 10 . The control rod 10 is provided with a rectangular groove 20 . A rectangular plate 21 is fixedly connected inside the positioning sleeve 18 .

[0035] like Figure 3 and Figure 4 The rectangular plate 21 passes through the rectangular groove 20 . By passing the rectangular plate 21 through the rectangular groove 20 , relative rotation between the positioning sleeve 18 and the control rod 10 can be avoided. The positioning sleeve 18 protrudes outside the valve stem 9 .

[0036] The external ring 12 is provided with two positioning holes 22, an L-shaped flow channel 101 is provided in the valve body 1, a closing plug 23 is provided at the horizontal end of the L-shaped flow channel 101, one end of the closing plug 23 is fixedly connected to a pulling shaft 24, a sealing tube 25 is fixedly connected to the valve body 1, and the sealing tube 25 is sleeved on the outer surface of the pulling shaft 24.

[0037] like Figure 1 , Figure 2 and Figure 5The sealing tube 25 can provide a seal for the surface of the pulling shaft 24, so that the pulling shaft 24 can move without water leaking to the outside of the valve body 1. There is an opening on the fixing ring 8, so that one end of the closing plug 23 can pass through the fixing ring 8 and be inserted into the positioning hole 22, and the L-shaped flow channel 101 is connected to the water inlet 2.

[0038] The working principle of the anti-wear hydraulic sealing butterfly ball valve provided by the utility model is as follows:

[0039] When it is necessary to open or close the spherical valve core 4 and open or close the valve body 1, the pulling shaft 24 can be pulled toward the outside of the valve body 1 to drive the closing plug 23 and the positioning hole 22 to separate. At this time, the valve stem 9 can be rotated to drive the spherical valve core 4 to rotate and open or close the spherical valve core 4. After releasing the pulling shaft 24, the water inside the water inlet 2 enters the L-shaped flow channel 101, and the closing plug 23 is pushed by the liquid, and the closing plug 23 is inserted into the positioning hole 22 to position the valve stem 9 and the spherical valve core 4.

[0040] When the butterfly plate 5 needs to be rotated to close or open the spherical valve core 4, the positioning sleeve 18 can be pulled upward, and the positioning sleeve 18 and the limit shaft 16 are separated. At this time, the positioning sleeve 18 can be rotated, and the positioning sleeve 18 drives the control rod 10 to rotate through the rectangular plate 21, and the control rod 10 drives the butterfly plate 5 to rotate.

[0041] Compared with the related art, the anti-wear hydraulic sealing butterfly ball valve provided by the utility model has the following beneficial effects:

[0042] The utility model installs an elastic ring 7 and a sealing ring 6 in the valve body 1, and the sealing ring 6 realizes the sealing between the spherical valve core 4 and the inside of the valve body 1. After the sealing ring 6 is worn, the tension of the elastic ring 7 is used to push the sealing ring 6, so that the sealing ring 6 can always fit tightly with the spherical valve core 4, making the sealing ring 6 more wear-resistant, greatly improving the sealing between the spherical valve core 4 and the valve body 1, and prolonging the service life of the butterfly ball valve.

[0043] 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, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An anti-wear hydraulic sealing butterfly ball valve, comprising a valve body (1), wherein both ends of the valve body (1) are provided with a water inlet (2) and a water outlet (3), characterized in that: The valve body (1) is provided with a rotatable spherical valve core (4), the spherical valve core (4) is used to seal the interior of the valve body (1), and the spherical valve core (4) is provided with a rotatable butterfly plate (5), the butterfly plate (5) is used to seal the interior of the spherical valve core (4); A sealing ring (6) is fixedly installed inside the valve body (1) and on both sides of the spherical valve core (4); an elastic ring (7) is fixedly installed inside the valve body (1) and on the side of the sealing ring (6) away from the spherical valve core (4); a fixing ring (8) is fixedly connected inside the valve body (1) and above the spherical valve core (4); a valve stem (9) is arranged inside the fixing ring (8); the bottom of the valve stem (9) is fixedly connected to the top of the spherical valve core (4); a control rod (10) is arranged inside the valve stem (9); the bottom of the control rod (10) is fixedly connected to the top of the butterfly plate (5).

2. The wear-resistant hydraulic sealing butterfly ball valve according to claim 1 is characterized in that: The top of the valve stem (9) extends to the outside of the valve body (1) and is fixedly connected to an operating handle (11); the valve stem (9) is sleeved on the outer surface of the control rod (10).

3. The wear-resistant hydraulic sealing butterfly ball valve according to claim 2 is characterized in that: An outer ring (12) is fixedly connected to the outer surface of the valve stem (9) and is located inside the fixing ring (8). A limiting arc groove (13) is provided on the outer ring (12). A limiting convex rod (14) used in conjunction with the limiting arc groove (13) is fixedly connected to the inner surface of the fixing ring (8).

4. The wear-resistant hydraulic sealing butterfly ball valve according to claim 3 is characterized in that: The valve stem (9) is provided with a cylindrical groove (15), a limiting axis (16) is fixedly connected in the cylindrical groove (15), a spring (17) is fixedly connected to the inner top of the cylindrical groove (15), a positioning sleeve (18) is provided in the cylindrical groove (15), and a positioning ring (19) is fixedly connected to the outer surface of the positioning sleeve (18).

5. The wear-resistant hydraulic sealing butterfly ball valve according to claim 4 is characterized in that: The positioning sleeve (18) is sleeved on the top of the control rod (10), a rectangular groove (20) is provided on the control rod (10), and a rectangular plate (21) is fixedly connected inside the positioning sleeve (18).

6. The wear-resistant hydraulic sealing butterfly ball valve according to claim 3 is characterized in that: The external connecting ring (12) is provided with two positioning holes (22); an L-shaped flow channel (101) is provided in the valve body (1); a closed plug (23) is provided at the horizontal end of the L-shaped flow channel (101); one end of the closed plug (23) is fixedly connected to a pulling shaft (24); a sealing tube (25) is fixedly connected to the valve body (1); and the sealing tube (25) is sleeved on the outer surface of the pulling shaft (24).

Images