Oblique lever eccentric half ball valve

Abstract

The utility model relates to the technical field of ball valve discloses inclined rod eccentric half ball valve, including pneumatic actuator, pneumatic actuator sets up at the top of valve body, the output fixedly connected with coupling of pneumatic actuator, the bottom of coupling is through valve body and is in close fit with ball valve piece, the top fixedly connected with upper cover of valve body, the top of upper cover is provided with O type ring, the inside all around of O type ring is provided with bolt one, O type ring is in close fit with valve body through bolt one, the inside of O type ring is provided with packing gland, in the utility model, when dismantling and replacing pneumatic actuator, first dismantle bolt one and bolt two in proper order, take off O type ring and packing gland, make coupling and ball valve piece separate, can take off old actuator from the top of valve body, and the reverse operation is installed new actuator, and the O type ring and packing gland are fixed with bolt one and bolt two again after resetting component and complete replacement.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a slanted rod eccentric hemispherical valve. Background Technology

[0002] A ball valve is a type of valve whose opening and closing element is a ball. The ball rotates around the center line of the valve body to achieve opening and closing. It has a simple structure and small size, and features low flow resistance, good sealing performance and easy operation. It is suitable for water, gas and oil media, and is widely used in chemical, petroleum and municipal fields. It can quickly cut off or regulate the flow of media in pipelines. In order to facilitate the adjustment of ball valves, a slanted rod eccentric hemispherical valve is required.

[0003] The eccentric hemispherical valve with slanted stem is a special type of ball valve with an eccentric centerline between the ball and the valve body. It is opened and closed by rotating the ball through an eccentric valve stem. This reduces friction on the sealing surface, improves sealing reliability and service life, and is suitable for complex media such as high viscosity and particles. It is widely used in metallurgy, mining and sewage treatment.

[0004] Currently available eccentric hemispherical valves consist of a valve body and an eccentric hemispherical valve core. During operation, the rotation of the eccentric rod drives the valve core to deflect, facilitating the opening and closing of the medium and flow regulation. To improve the sealing accuracy between the valve core and the valve body, existing technologies optimize the eccentricity design of the eccentric rod and the valve core for efficient sealing. Furthermore, to simplify the disassembly and assembly process of the actuator, existing technologies use flange connections to fix the actuator and valve stem for replacing pneumatic actuators. However, this method makes it difficult to guarantee the coaxiality of the actuator and valve stem after disassembly and assembly, and the smoothness during positioning is insufficient, affecting the stability of the valve's opening and closing action and thus reducing the reliability of the device. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a slanted rod eccentric hemispherical valve, which aims to improve the problem of ensuring the coaxiality of the actuator and valve stem after disassembly and assembly in the existing slanted rod eccentric hemispherical valve.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a slanted rod eccentric hemispherical valve, including a valve body, an installation groove is provided on the lower inner side of the valve body, a ball valve component is rotatably connected to the inner side of the installation groove, a replacement mechanism is provided on the top of the valve body, the replacement mechanism facilitates the replacement of the device, and an installation mechanism is provided on the outside of the valve body, the installation mechanism is used to facilitate the installation of the device.

[0007] The replacement mechanism includes a pneumatic actuator, which is located on the top of the valve body. The output end of the pneumatic actuator is fixedly connected to a coupling. The bottom of the coupling passes through the valve body and engages with the ball valve component. A top cover is fixedly connected to the top of the valve body. An O-ring is provided on the top of the top cover. Pins 1 are provided around the inside of the O-ring. The O-ring engages with the valve body through the pins 1. A packing gland is provided inside the O-ring. Pins 2 are provided around the inside of the packing gland. The packing gland engages with the valve body through the pins 2. A separator assembly is provided on the outside of the ball valve component.

[0008] As a further description of the above technical solution:

[0009] The mounting mechanism includes a spring washer located on the inner left side of the valve body. Each circumference of the inner side of the spring washer is threaded with a screw, which connects the spring washer to the valve body. A sealing cover is located at the bottom of the valve body, and a second screw engages with the inner side of the sealing cover, thus engaging the sealing cover with the valve body. A valve stem is fixedly connected to the inner side of the sealing cover. A protective assembly is located on the outer side of the valve body, and a mounting assembly is located on the outer side of the pneumatic actuator.

[0010] As a further description of the above technical solution:

[0011] The separation assembly includes a sealing gasket, which is located on the outside of the ball valve component, and the upper and lower sides of the sealing gasket are fixedly connected with connecting grooves.

[0012] As a further description of the above technical solution:

[0013] The replacement mechanism also includes threaded grooves, with multiple threaded grooves respectively opened on the left and right sides of the valve body.

[0014] As a further description of the above technical solution:

[0015] The replacement mechanism also includes a flat key, which is fixedly connected to the top outer side of the coupling.

[0016] As a further description of the above technical solution:

[0017] The replacement mechanism also includes a controller, which is fixedly connected to the bottom right side of the pneumatic actuator and electrically connected to the pneumatic actuator.

[0018] As a further description of the above technical solution:

[0019] The protective component includes a first protective pad, which is fixedly connected to the top of the outer side of the valve body, and second protective pads are fixedly connected to both the left and right sides of the outer side of the valve body.

[0020] As a further description of the above technical solution:

[0021] The mounting assembly includes a plug rod, which is fixedly connected to the top of the pneumatic actuator, and a rubber ring is fixedly connected to the bottom outer side of the plug rod.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by sequentially disassembling pin one and pin two, and then removing the O-ring and packing gland, the coupling will naturally separate from the ball valve. After completing these steps, the pneumatic actuator can be easily removed from the top of the valve body. When installing a new pneumatic actuator, the steps are reversed. First, the relevant components are reset, and then the O-ring and packing gland are re-fixed using pin one and pin two. This completes the replacement of the pneumatic actuator, thereby improving the reliability of the device.

[0024] 2. In this utility model, the spring washer is firmly fixed to the valve body by screw one. This operation can effectively enhance the stability of the connection part and play a good buffering effect. Then, screw two is used to lock the sealing cover to the valve body. At the same time, the valve stem is precisely assembled with the valve body with the help of the sealing cover. The whole device cleverly uses a combination of threaded connection and locking structure, which greatly simplifies the installation process and improves the installation efficiency. Attached Figure Description

[0025] Figure 1 This is a structural cross-sectional view of the mechanism of the eccentric hemispherical valve with inclined rod proposed in this utility model;

[0026] Figure 2 This is a front view of the eccentric hemispherical valve with a slanted rod proposed in this utility model;

[0027] Figure 3 This is a top view of the eccentric hemispherical valve with inclined rod proposed in this utility model;

[0028] Figure 4 This is a perspective view of the eccentric hemispherical valve with inclined rod proposed in this utility model;

[0029] Figure 5 This is a partial structural schematic diagram of the eccentric hemispherical valve with inclined rod proposed in this utility model.

[0030] Legend:

[0031] 1. Valve body; 2. Replacement mechanism; 21. O-ring; 22. Pin 1; 23. Packing gland; 24. Pin 2; 25. Top cover; 26. Pneumatic actuator; 27. Coupling; 28. Controller; 29. ​​Separation assembly; 291. Sealing gasket; 292. Connecting groove; 210. Threaded groove; 211. Flat key; 3. Mounting mechanism; 31. Screw 1; 32. Spring washer; 33. Sealing cover; 34. Screw 2; 35. Valve stem; 36. Protective assembly; 361. Protective gasket 1; 362. Protective gasket 2; 37. Mounting assembly; 371. Insert rod; 372. Rubber ring; 4. Mounting groove; 5. Ball valve component. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 2 and Figure 4 An embodiment of this utility model is provided: a slanted rod eccentric hemispherical valve, including a valve body 1, an installation groove 4 is provided on the lower side of the interior of the valve body 1, a ball valve component 5 is rotatably connected to the inner side of the installation groove 4, the ball valve component 5 can rotate flexibly in the installation groove 4 to realize the on-off control of the pipeline, a replacement mechanism 2 is provided on the top of the valve body 1, the replacement mechanism 2 can facilitate the replacement of the device, and an installation mechanism 3 is provided on the outside of the valve body 1, the installation mechanism 3 is used to facilitate the installation of the device;

[0034] The replacement mechanism 2 includes a pneumatic actuator 26, which provides power output for opening and closing the ball valve. The pneumatic actuator 26 is located on the top of the valve body 1. A coupling 27 is fixedly connected to the output end of the pneumatic actuator 26, which transmits power. The bottom of the coupling 27 passes through the valve body 1 and engages with the ball valve component 5. The engagement structure enables direct power transmission. A top cover 25 is fixedly connected to the top of the valve body 1, which protects the internal components. An O-ring 21 is provided on the top of the top cover 25 to enhance the sealing between the top cover 25 and the valve body 1. The O-ring 21 has pins 22 on all four sides inside, which provide a detachable connection for fixing the O-ring 21. The O-ring 21 is engaged with the valve body 1 through the pins 22. The packing gland 23 is provided on the inner side of the O-ring 21. The packing gland 23 is used to compress the sealing packing. The packing gland 23 has pins 24 on all four sides inside, which provide a detachable connection for fixing the packing gland 23. The packing gland 23 is engaged with the valve body 1 through the pins 24. The ball valve component 5 has a partition component 29 on the outer side. The partition component 29 is used to isolate the media in different areas inside the valve body 1.

[0035] Specifically, when it is necessary to replace the pneumatic actuator 26, the operation procedure is very simple: just remove the first pin 22 and the second pin 24, remove the O-ring 21 and the packing gland 23, and separate the coupling 27 from the ball valve component 5. The pneumatic actuator 26 can then be easily removed from the top of the valve body 1. When installing a new pneumatic actuator 26, follow the reverse steps and re-fix the O-ring 21 and the packing gland 23 with the first pin 22 and the second pin 24 to complete the replacement.

[0036] Reference Figure 2 , Figure 3 and Figure 5 The mounting mechanism 3 includes a spring washer 32, which provides cushioning during connection and reduces the impact of vibration on the connection structure. The spring washer 32 is located on the inside left side of the valve body 1. Screws 31 are threaded around the inside of the spring washer 32, securing it to the valve body 1. A sealing cap 33 is located at the bottom of the valve body 1 to close the mounting opening and prevent media leakage. Screw 34 is engaged on the inner side of 3. Screw 34 provides a detachable connection for fixing the sealing cover 33. The sealing cover 33 is engaged with the valve body 1 by screw 34. A valve stem 35 is fixedly connected to the inner side of the sealing cover 33. The valve stem 35 is used to transmit torque and control the rotation of the ball valve 5. A protective component 36 is provided on the outside of the valve body 1. The protective component 36 is used to protect the outside of the valve body 1 from damage. A mounting component 37 is provided on the outside of the pneumatic actuator 26. The mounting component 37 facilitates the connection and fixation of the pneumatic actuator 26 with external equipment.

[0037] Specifically, during the installation process, the spring washer 32 is fixed to the valve body 1 by screw 31, which can enhance the stability of the connection and play a buffering role; the sealing cover 33 is engaged and fixed to the valve body 1 by screw 34, and the valve stem 35 is assembled with the valve body 1 through the sealing cover 33. The overall design adopts a combination of threaded connection and engagement structure, which effectively simplifies the installation process.

[0038] Reference Figure 1 and Figure 4 The separating component 29 includes a sealing gasket 291, which is made of elastic material and can tightly fit the contact surface between the ball valve component 5 and the valve body 1. The sealing gasket 291 is located on the outside of the ball valve component 5. The upper and lower sides of the inside of the sealing gasket 291 are fixedly connected with connecting grooves 292. The connecting grooves 292 are used to enhance the connection strength between the sealing gasket 291 and the ball valve component 5 and prevent the sealing gasket 291 from falling off. The replacement mechanism 2 also includes a threaded groove 210. The size of the threaded groove 210 conforms to the general thread standard. Multiple threaded grooves 210 are respectively located on the left and right sides of the outside of the valve body 1.

[0039] Specifically, the sealing gasket 291 is tightly connected to the ball valve component 5 through the connecting groove 292, which enhances the sealing between the ball valve component 5 and the valve body 1 and prevents media leakage. The threaded groove 210 provides a threaded interface for the connection between the valve body 1 and external components, which facilitates the fixing of the valve body 1 or the connection with other pipelines by bolts and other connecting parts.

[0040] Reference Figure 1 , Figure 2 and Figure 4 The replacement mechanism 2 also includes a flat key 211, the shape of which matches the keyway of the output end of the coupling 27 and the pneumatic actuator 26. The flat key 211 is fixedly connected to the top outer side of the coupling 27. The replacement mechanism 2 also includes a controller 28, which has a built-in control program and can receive external control signals. The controller 28 is fixedly connected to the bottom right side of the pneumatic actuator 26 and is electrically connected to the pneumatic actuator 26. The controller 28 achieves precise control of the pneumatic actuator 26 through electrical signals.

[0041] Specifically, the key 211 is used to enhance the connection strength between the coupling 27 and the output end of the pneumatic actuator 26, ensuring stable power transmission. The controller 28 controls the start, stop and action of the pneumatic actuator 26 through electrical connection, realizing precise control of the opening and closing of the ball valve 5.

[0042] Reference Figure 1 , Figure 3 and Figure 5The protective component 36 includes a first protective pad 361, which is made of wear-resistant material and covers the contact area between the top of the valve body 1 and other components. The first protective pad 361 is fixedly connected to the top outer side of the valve body 1. The second protective pad 362 is fixedly connected to the left and right outer sides of the valve body 1. The thickness of the second protective pad 362 is adapted to the parts of the valve body 1 that are prone to impact. The mounting component 37 includes a plug rod 371. The diameter of the plug rod 371 matches the size of the external mounting hole. The plug rod 371 is fixedly connected to the top of the pneumatic actuator 26. A rubber ring 372 is fixedly connected to the bottom outer side of the plug rod 371. The rubber ring 372 can fill the gap when plugged in, enhancing the sealing and stability of the connection.

[0043] Specifically, pad 1 361 and pad 2 362 protect the top and left and right sides of valve body 1 respectively, reducing damage to valve body 1 from external collisions. The plug rod 371 facilitates the plug-in installation of pneumatic actuator 26 with external equipment, and the rubber ring 372 enhances the sealing and connection stability of the plug-in joint.

[0044] Working principle: Before using this device, when it is necessary to replace the pneumatic actuator 26, simply remove the first pin 22 and the second pin 24, remove the O-ring 21 and the packing gland 23, and separate the coupling 27 from the ball valve component 5. Then the pneumatic actuator 26 can be removed from the top of the valve body 1. When installing a new pneumatic actuator 26, reverse the above steps and re-fix the O-ring 21 and the packing gland 23 with the first pin 22 and the second pin 24 to complete the replacement.

[0045] Furthermore, during installation, the spring washer 32 is fixed to the valve body 1 by screw 31 to enhance the stability of the connection and the buffering effect. The sealing cover 33 is engaged and fixed to the valve body 1 by screw 34. At the same time, the valve stem 35 is assembled with the valve body 1 through the sealing cover 33. The entire installation process is simplified by threaded connection and engagement structure.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An eccentric hemispherical valve with a slanted stem, comprising a valve body (1), characterized in that: The valve body (1) has an installation groove (4) on its lower inner side. A ball valve component (5) is rotatably connected to the inner side of the installation groove (4). A replacement mechanism (2) is provided on the top of the valve body (1). The replacement mechanism (2) facilitates the replacement of the device. An installation mechanism (3) is provided on the outside of the valve body (1). The installation mechanism (3) facilitates the installation of the device. The replacement mechanism (2) includes a pneumatic actuator (26), which is located on the top of the valve body (1). The output end of the pneumatic actuator (26) is fixedly connected to a coupling (27). The bottom of the coupling (27) passes through the valve body (1) and engages with the ball valve component (5). The top of the valve body (1) is fixedly connected to a top cover (25). An O-ring (21) is provided on the top of the top cover (25). A pin 1 (22) is provided around the inside of the O-ring (21). The O-ring (21) engages with the valve body (1) through the pin 1 (22). A packing gland (23) is provided on the inner side of the O-ring (21). A pin 2 (24) is provided around the inside of the packing gland (23). The packing gland (23) engages with the valve body (1) through the pin 2 (24). A separator component (29) is provided on the outer side of the ball valve component (5).

2. The eccentric hemispherical valve with a slanted stem according to claim 1, characterized in that: The mounting mechanism (3) includes a spring pad (32), which is located on the inside left side of the valve body (1). The inside of the spring pad (32) is threaded with screws (31) on all four sides. The spring pad (32) is threaded to the valve body (1) through screws (31). A sealing cover (33) is provided at the bottom of the valve body (1). Screws (34) are engaged on the inside of the sealing cover (33). The sealing cover (33) is engaged with the valve body (1) through screws (34). A valve stem (35) is fixedly connected to the inside of the sealing cover (33). A protective component (36) is provided on the outside of the valve body (1). An mounting component (37) is provided on the outside of the pneumatic actuator (26).

3. The eccentric hemispherical valve with a slanted stem according to claim 1, characterized in that: The separation assembly (29) includes a sealing gasket (291), which is located on the outside of the ball valve (5). The upper and lower sides of the sealing gasket (291) are fixedly connected with connecting grooves (292).

4. The eccentric hemispherical valve with a slanted stem according to claim 1, characterized in that: The replacement mechanism (2) also includes threaded grooves (210), and multiple threaded grooves (210) are respectively opened on the left and right sides of the valve body (1).

5. The eccentric hemispherical valve with a slanted stem according to claim 1, characterized in that: The replacement mechanism (2) also includes a flat key (211), which is fixedly connected to the top of the outer side of the coupling (27).

6. The eccentric hemispherical valve with a slanted stem according to claim 1, characterized in that: The replacement mechanism (2) also includes a controller (28), which is fixedly connected to the bottom right side of the pneumatic actuator (26) and is electrically connected to the pneumatic actuator (26).

7. The eccentric hemispherical valve with a slanted rod according to claim 2, characterized in that: The protective component (36) includes a first protective pad (361), which is fixedly connected to the top of the outer side of the valve body (1), and a second protective pad (362) is fixedly connected to the left and right sides of the outer side of the valve body (1).

8. The eccentric hemispherical valve with a slanted rod according to claim 2, characterized in that: The mounting assembly (37) includes a plug rod (371) which is fixedly connected to the top of the pneumatic actuator (26), and a rubber ring (372) is fixedly connected to the bottom outer side of the plug rod (371).

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