Three-piece type cast steel fixed ball valve

Abstract

The utility model discloses a three-piece cast steel fixed ball valve, which is applied to the field of fixed ball valves and comprises a valve body, a first connecting seat and a second connecting seat are respectively inserted on two sides of the valve body, a ball seat is slidably connected in the valve body, a bearing seat is integrally processed at the top of the valve body, and a bearing is arranged on the bearing seat. A rotating rod is rotationally connected to the interior of the bearing seat through a waterproof bearing, limiting protruding blocks are integrally machined on the surface of the first connecting seat and the surface of the second connecting seat, and limiting grooves are integrally formed in the two ends of the valve body. According to the fixed ball valve, the filter seat is mounted on the first connecting seat, and the frame body is clamped in the filter seat, so that when water flows through the fixed ball valve and a water body in the first connecting seat at the upstream flows into the valve body, impurities in the water body can be blocked through filtration of the filter screen, and the impurities are prevented from interacting with the ball seat; therefore, the service life of the ball seat is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of fixed ball valves, in particular to a three-piece cast steel fixed ball valve. Background Art

[0002] The three-piece cast steel trunnion-mounted ball valve has the characteristics of small fluid resistance and is mostly used in large pipelines.

[0003] At present, a Chinese utility model with the announcement number CN218267327U discloses a three-piece ball valve, which relates to the technical field of ball valves, and includes a valve tube, in which a ball is rotatably arranged, and a connecting hole is opened on the ball, and the connecting hole is connected with the valve tube; a valve shaft is arranged on the ball, and the valve shaft rotates through the valve tube, and a valve stem is arranged on the side of the valve shaft away from the ball; a plurality of limit blocks are slidably arranged on the side of the valve tube away from the ball, and a rotating column is arranged on the valve stem, and the rotating column is slidably arranged between adjacent limit blocks. This application has the effect of improving the working stability of the ball valve.

[0004] In summary, although the fixed ball valve can achieve the purpose of preventing the rotating column from rotating, there are still certain problems in its use. For example, the fixed ball valve lacks a filtering structure. After long-term use, the water inside the pipeline will carry certain impurities. If the impurities are not processed, it is easy to accelerate the wear of the ball seat and reduce its water-stopping performance. At the same time, the valve body and the connecting seat of the fixed ball valve are fixed with bolts, and a large number of bolts are used, so that during assembly, the staff needs to spend a lot of time on installation, and the assembly efficiency is low. Utility Model Content

[0005] The utility model aims to provide a three-piece cast steel fixed ball valve, which has the advantages of filtering impurities and high assembly efficiency.

[0006] The above-mentioned technical objective of the utility model is achieved through the following technical scheme: a three-piece cast steel fixed ball valve comprises a valve body, wherein two sides of the valve body are respectively plugged with a first connecting seat and a second connecting seat, a ball seat is slidably connected inside the valve body, a bearing seat is integrally processed on the top of the valve body, a rotating rod is rotatably connected inside the bearing seat through a waterproof bearing, a limiting protrusion is integrally processed on the surface of the first connecting seat and the second connecting seat, a limiting groove is integrally formed on both ends of the valve body, a clamping groove is formed on the surface of the limiting protrusion and the valve body, a clamping hoop clamped with the clamping groove is arranged between the limiting protrusion and the valve body, a filter seat is connected on the surface of the first connecting seat, a frame is clamped inside the filter seat, and a clamping groove clamped with the frame is provided inside the first connecting seat, one end of the frame passes through the clamping groove to the inside of the first connecting seat, a filter screen is installed inside the frame, and a sewage discharge chamber is connected at the bottom of the first connecting seat.

[0007] By adopting the above technical scheme, the utility model installs a filter seat on the first connecting seat, and the filter seat is internally clamped with a frame. When the fixed ball valve is running, the water inside the first connecting seat at the upstream flows into the valve body and is filtered by the filter net to block impurities in the water, thereby preventing the impurities from interacting with the ball seat to cause accelerated wear of the ball seat and improve the service life of the ball seat. By processing limiting protrusions on the first connecting seat and the second connecting seat, and cooperating with the limiting grooves on the valve body that are clamped with the limiting protrusions, when the first connecting seat and the second connecting seat are clamped into the interior of the valve body, the clamping hoop is clamped between the limiting protrusion and the clamping groove on the valve body, so as to achieve the purpose of fixing the first connecting seat and the second connecting seat to the valve body, thereby improving the convenience of installation.

[0008] The utility model is further configured as follows: the first connecting seat and the second connecting seat are both clamped with a sealing seat used in conjunction with a ball seat at one end close to the valve body.

[0009] The ball seat is sealed by adopting the technical solution.

[0010] The utility model is further configured as follows: a first sealing ring is installed between the first connecting seat and the sealing seat and between the second connecting seat and the sealing seat.

[0011] By adopting the above technical solution, the sealing performance between the first connecting seat, the second connecting seat and the sealing seat is improved.

[0012] The utility model is further configured as follows: a second sealing ring is installed between the first connecting seat and the valve body and between the second connecting seat and the valve body.

[0013] By adopting the above technical solution, the sealing performance between the first connecting seat, the second connecting seat and the valve body is improved.

[0014] The utility model is further configured as follows: one end of the rotating rod penetrates into the interior of the valve body and is fixedly sleeved with the ball seat, the other end of the valve body is fixedly sleeved with a rotating disk, and the surface of the rotating rod is threadedly connected with a locking nut block.

[0015] The adoption of the technical solution makes it convenient for the rotating rod to rotate and lock.

[0016] The utility model is further configured as follows: both ends of the clamping hoop are integrally processed with protrusions, and the two protrusions are bolted together by bolts.

[0017] The above technical solution is adopted to limit and fix the clamping hoop.

[0018] The utility model is further configured as follows: a fixing block is bolted on the top of the frame, a sealing gasket is clamped between the fixing block and the filter seat, and the fixing block and the filter seat are bolted together by bolts.

[0019] By adopting the above technical solution, the fixed block and the filter seat are sealed.

[0020] The utility model is further configured as follows: the bottom of the sewage discharge chamber is connected with a waste discharge pipe, and a valve is installed on the surface of the waste discharge pipe.

[0021] The above technical solution is adopted to facilitate the discharge of filtered impurities.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. The utility model has a filter seat installed on the first connecting seat, and a frame is clamped inside the filter seat. When the fixed ball valve is running, the water inside the first connecting seat at the upstream flows into the valve body, and the water is filtered by the filter net to block the impurities in the water, so as to prevent the impurities from interacting with the ball seat, causing accelerated wear of the ball seat, and prolonging the service life of the ball seat;

[0024] 2. The utility model processes limiting protrusions on the first connecting seat and the second connecting seat, and cooperates with the limiting grooves on the valve body to engage with the limiting protrusions. When the first connecting seat and the second connecting seat are inserted into the interior of the valve body, the locking hoop is inserted between the limiting protrusion and the locking groove on the valve body, thereby achieving the purpose of fixing the first connecting seat and the second connecting seat and the valve body together, thereby improving the convenience of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a partial structural cross-sectional view of the utility model;

[0027] Figure 3It is a structural schematic diagram of the clamping hoop in the utility model;

[0028] Figure 4 It is a structural schematic diagram of the valve body in the utility model;

[0029] Figure 5 It is a structural schematic diagram of the first connecting seat in the utility model.

[0030] Figure numerals: 1. valve body; 2. first connecting seat; 3. second connecting seat; 4. ball seat; 5. bearing seat; 6. rotating rod; 7. limiting protrusion; 8. limiting groove; 9. locking groove; 10. locking hoop; 11. filter seat; 12. frame; 13. filter screen; 14. sewage discharge chamber; 15. sealing seat; 16. first sealing ring; 17. second sealing ring; 18. rotating disk; 19. locking nut block; 20. protrusion; 21. fixing block; 22. sealing gasket; 23. waste discharge pipe. DETAILED DESCRIPTION

[0031] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0032] Embodiment 1:

[0033] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A three-piece cast steel fixed ball valve comprises a valve body 1, a first connecting seat 2 and a second connecting seat 3 are respectively inserted on both sides of the valve body 1, a ball seat 4 is slidably connected inside the valve body 1, a bearing seat 5 is integrally processed on the top of the valve body 1, a rotating rod 6 is rotatably connected to the inside of the bearing seat 5 through a waterproof bearing, a limiting protrusion 7 is integrally processed on the surface of the first connecting seat 2 and the second connecting seat 3, a limiting groove 8 is integrally formed on both ends of the valve body 1, and a clamping groove 9 is formed on the surface of the limiting protrusion 7 and the valve body 1, and a limiting protrusion 7 is integrally formed on the surface of the valve body 1. A locking clamp 10 engaged with the locking groove 9 is provided between the protrusion 7 and the valve body 1. By processing the limiting protrusion 7 on the first connecting seat 2 and the second connecting seat 3, and cooperating with the limiting groove 8 engaged with the limiting protrusion 7 on the valve body 1, when the first connecting seat 2 and the second connecting seat 3 are inserted into the inside of the valve body 1, the locking clamp 10 is inserted between the limiting protrusion 7 and the locking groove 9 on the valve body 1, so as to achieve the purpose of fixing the first connecting seat 2 and the second connecting seat 3 with the valve body 1, thereby improving the convenience of installation.

[0034] refer to Figure 2 The first connecting seat 2 and the second connecting seat 3 are both clamped with a sealing seat 15 used in conjunction with the ball seat 4 at one end close to the valve body 1. The ball seat 4 is sealed by providing the sealing seat 15.

[0035] refer to Figure 2A first sealing ring 16 is installed between the first connecting seat 2 and the sealing seat 15 and between the second connecting seat 3 and the sealing seat 15. By providing the first sealing ring 16, the sealing between the first connecting seat 2 and the second connecting seat 3 and the sealing seat 15 is improved.

[0036] refer to Figure 2 A second sealing ring 17 is installed between the first connecting seat 2 and the valve body 1 and between the second connecting seat 3 and the valve body 1. By providing the second sealing ring 17, the sealing between the first connecting seat 2 and the second connecting seat 3 and the valve body 1 is improved.

[0037] refer to Figure 1 One end of the rotating rod 6 passes through the interior of the valve body 1 and is fixedly sleeved with the ball seat 4, and the other end of the valve body 1 is fixedly sleeved with a rotating disk 18. The surface of the rotating rod 6 is threadedly connected with a locking nut block 19. By setting the rotating disk 18 and the locking nut block 19, the rotating rod 6 is convenient to rotate and lock.

[0038] refer to Figure 1 and Figure 3 Both ends of the clamping hoop 10 are integrally processed with protrusions 20, and the two protrusions 20 are bolted together. By providing the protrusions 20, the clamping hoop 10 is limited and fixed.

[0039] Brief description of the usage process: by processing the limiting protrusion 7 on the first connecting seat 2 and the second connecting seat 3, and cooperating with the limiting groove 8 opened on the valve body 1 to engage with the limiting protrusion 7, when the first connecting seat 2 and the second connecting seat 3 are inserted into the inside of the valve body 1, the clamping hoop 10 is clamped between the limiting protrusion 7 and the clamping groove 9 on the valve body 1, the purpose of fixing the first connecting seat 2 and the second connecting seat 3 and the valve body 1 together can be achieved, thereby improving the convenience of installation.

[0040] Embodiment 2:

[0041] refer to Figure 1 and Figure 2 A three-piece cast steel fixed ball valve, the surface of the first connecting seat 2 is connected with a filter seat 11, the interior of the filter seat 11 is clamped with a frame 12, and the interior of the first connecting seat 2 is provided with a slot clamped with the frame 12, one end of the frame 12 passes through the first connecting seat 2 through the slot, a filter screen 13 is installed inside the frame 12, and the bottom of the first connecting seat 2 is connected with a sewage discharge chamber 14. The filter seat 11 is installed on the first connecting seat 2, and the interior of the filter seat 11 is clamped with the frame 12. When the fixed ball valve is running, the water inside the first connecting seat 2 upstream flows into the valve body 1, and will be filtered by the filter screen 13 to block impurities in the water, prevent the impurities from interacting with the ball seat 4, causing accelerated wear of the ball seat 4, and improve the service life of the ball seat 4.

[0042] refer to Figure 1 and Figure 2 A fixing block 21 is bolted to the top of the frame 12, a sealing gasket 22 is clamped between the fixing block 21 and the filter seat 11, and the fixing block 21 and the filter seat 11 are bolted together by bolts. By setting the fixing block 21 and the sealing gasket 22, the fixing block 21 and the filter seat 11 are sealed.

[0043] refer to Figure 2 The bottom of the sewage discharge chamber 14 is connected to a waste discharge pipe 23, and a valve is installed on the surface of the waste discharge pipe 23. By setting the waste discharge pipe 23, it is convenient to discharge the filtered impurities.

[0044] A brief description of the usage process: a filter seat 11 is installed on the first connecting seat 2, and a frame 12 is clamped inside the filter seat 11. When the fixed ball valve is running, the water inside the first connecting seat 2 at the upstream flows into the valve body 1, and is filtered by the filter net 13 to block impurities in the water, thereby preventing the impurities from interacting with the ball seat 4 to cause accelerated wear of the ball seat 4 and improve the service life of the ball seat 4.

[0045] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A three-piece cast steel trunnion-mounted ball valve, comprising a valve body (1), characterized in that: The first connecting seat (2) and the second connecting seat (3) are respectively inserted into the two sides of the valve body (1); the valve body (1) is slidably connected to a ball seat (4); the top of the valve body (1) is integrally machined with a bearing seat (5); the inside of the bearing seat (5) is rotatably connected to a rotating rod (6) via a waterproof bearing; the surfaces of the first connecting seat (2) and the second connecting seat (3) are integrally machined with limiting protrusions (7); both ends of the valve body (1) are integrally provided with limiting grooves (8); the limiting protrusions (7) and the surfaces of the valve body (1) are provided with positioning grooves ( 9), a clamping hoop (10) clamped with the clamping groove (9) is arranged between the limiting protrusion (7) and the valve body (1), the surface of the first connecting seat (2) is connected to the filter seat (11), the interior of the filter seat (11) is clamped with a frame (12), and the interior of the first connecting seat (2) is provided with a clamping groove clamped with the frame (12), one end of the frame (12) passes through the interior of the first connecting seat (2) through the clamping groove, a filter screen (13) is installed inside the frame (12), and the bottom of the first connecting seat (2) is connected to a sewage discharge chamber (14).

2. A three-piece cast steel trunnion mounted ball valve according to claim 1, characterized in that: The first connecting seat (2) and the second connecting seat (3) are both clamped with a sealing seat (15) used in conjunction with the ball seat (4) at one end close to the valve body (1).

3. A three-piece cast steel trunnion mounted ball valve according to claim 2, characterized in that: A first sealing ring (16) is installed between the first connecting seat (2) and the sealing seat (15) and between the second connecting seat (3) and the sealing seat (15).

4. A three-piece cast steel trunnion mounted ball valve according to claim 1, characterized in that: A second sealing ring (17) is installed between the first connecting seat (2) and the valve body (1) and between the second connecting seat (3) and the valve body (1).

5. The three-piece cast steel trunnion-mounted ball valve according to claim 1, characterized in that: One end of the rotating rod (6) penetrates into the interior of the valve body (1) and is fixedly sleeved with the ball seat (4); the other end of the valve body (1) is fixedly sleeved with a rotating disk (18); and a locking nut block (19) is threadedly connected to the surface of the rotating rod (6).

6. A three-piece cast steel trunnion mounted ball valve according to claim 1, characterized in that: Both ends of the clamping hoop (10) are integrally machined with protrusions (20), and the two protrusions (20) are bolted together.

7. A three-piece cast steel trunnion mounted ball valve according to claim 1, characterized in that: A fixing block (21) is bolted to the top of the frame (12), a sealing gasket (22) is clamped between the fixing block (21) and the filter seat (11), and the fixing block (21) and the filter seat (11) are bolted together.

8. The three-piece cast steel trunnion mounted ball valve according to claim 1, characterized in that: The bottom of the sewage discharge chamber (14) is connected to a waste discharge pipe (23), and a valve is installed on the surface of the waste discharge pipe (23).

Images