A high torque rotary valve machine body

Abstract

The utility model provides a high torque rotary valve door body relates to valve technical field, including valve body, still include: high torque rotation subassembly, high torque rotation subassembly includes the connecting piece of being connected in valve body top, the valve stem is rotatably supported on the connecting piece, the top of valve stem is connected with hand wheel, the bottom of valve stem is connected with driving gear, in the utility model, rotate hand wheel drive valve stem rotation, the driving gear of valve stem bottom engages drive driven gear, driven gear and the gear ring of shell inner wall engage transmission, pass to the shell after torque amplification, drive valve core rotates in valve body valve cavity, realize medium on -off, in locking assembly, the third rotation block supports the limit block, its integral moulding limit protruding joint access hand wheel's limit clamping groove, can fix hand wheel position, prevent valve core malfunction, realize high torque accurate opening and closing medium, locking prevent malfunction, the valve operation control effect of unlocking convenient.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a high-torque rotary valve body. Background Technology

[0002] High-torque rotary valve bodies are mainly used in valve devices in fluid control systems, especially for valves that need to operate under high load, high pressure or complex conditions. Traditional valves are prone to poor sealing, damage or difficulty in operation under high torque requirements. Therefore, the design requirements for the body are more stringent. The use of new materials and structural optimization can effectively improve the performance of the valve and ensure its reliability and long-term stable operation under harsh conditions.

[0003] However, in actual use, the following shortcomings still exist. For example, the existing valve body cannot achieve high torque for precise opening and closing of media, lock-up to prevent accidental operation, and convenient unlocking for valve operation control. In high-pressure and high-viscosity media transportation scenarios, insufficient torque leads to opening and closing jams, making it impossible to accurately control the media flow rate. This can easily cause fluctuations in transportation pressure, affecting the stability of subsequent processes. For example, unstable feeding in chemical reactors can lead to a decrease in product purity. The lack of a reliable locking mechanism can easily cause accidental operation. Accidental opening under high-pressure conditions may lead to media spraying, causing equipment damage or personnel injury. Accidental closing in critical processes will interrupt production. Inconvenient unlocking increases emergency handling time. In case of failure, the inability to quickly open and close the valve exacerbates accident losses. In addition, incomplete opening and closing due to insufficient torque can easily lead to media leakage, increasing environmental risks and material losses. Frequent maintenance of locking and opening / closing mechanisms increases labor and spare parts costs. At the same time, production interruptions caused by downtime for maintenance further aggravate economic losses, seriously restricting the safety, stability, and economy of industrial production.

[0004] Therefore, this utility model proposes a high-torque rotary valve body to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and propose a high-torque rotary valve body.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-torque rotary valve body, comprising a valve body, and further comprising: A high-torque rotary assembly includes a connector connected to the top of a valve body, a valve stem rotatably supported on the connector, a handwheel connected to the top of the valve stem, a drive gear connected to the bottom of the valve stem, the drive gear meshing with a driven gear, the driven gear being rotatably connected to the inside of the connector via a rotating shaft, a housing rotatably connected to the bottom of the connector, a gear ring meshing with the outside of the driven gear, the gear ring being connected to the inner wall of the housing, and a valve core coaxially connected to the bottom end of the housing, the valve core extending into the valve cavity of the valve body; A locking assembly includes a fixing block connected to a connector, a third rotating block rotatably connected to the top of the fixing block, a limiting block rotatably connected to the top of the third rotating block, a limiting protrusion integrally formed on the side of the limiting block facing the handwheel, a limiting groove adapted to the limiting protrusion being opened on the outer peripheral wall of the handwheel, and the limiting protrusion being engaged in the limiting groove.

[0007] Furthermore, a bracket is connected to the top of the connector, and the valve stem is rotatably connected to the central hole of the bracket via a bearing.

[0008] The beneficial effects of adopting the above-mentioned further solution are: the bracket at the top of the connector provides stable support for the valve stem, its central hole is adapted to the bearing installation, the valve stem is rotatably connected through the bearing, the bearing can reduce the frictional resistance when the valve stem rotates, ensure the coaxiality of the valve stem during high torque transmission, avoid torque loss caused by uneven wear, and at the same time disperse the radial load borne by the valve stem, improving the smoothness of valve stem rotation and service life under high torque conditions.

[0009] Furthermore, a sealing groove is provided on the outer peripheral wall of the valve core, and a rubber sealing ring is embedded in the sealing groove. The rubber sealing ring is interference-fitted with the inner wall of the valve cavity of the valve body.

[0010] The beneficial effects of adopting the above-mentioned further solution are: the sealing groove on the outer peripheral wall of the valve core is used to fix the rubber sealing ring, the sealing ring and the inner wall of the valve body cavity adopt an interference fit, after assembly the sealing ring undergoes elastic deformation, tightly fits the inner wall of the valve cavity, blocks the medium leakage channel, the interference fit ensures that there is no gap in the sealing surface under high pressure and high torque conditions, effectively blocks the medium penetration, ensures the valve sealing reliability, and adapts to the sealing requirements of various fluid transportation scenarios.

[0011] Furthermore, the rubber sealing ring has a U-shaped structure, the material of the rubber sealing ring is hydrogenated nitrile rubber, and the outer peripheral wall of the rubber sealing ring is provided with micron-level anti-slip texture.

[0012] The beneficial effects of adopting the above-mentioned further solution are: the hydrogenated nitrile rubber sealing ring with U-shaped structure has both excellent elasticity and oil resistance. The U-shaped cavity can generate a self-tightening effect under the action of medium pressure. The higher the pressure, the tighter the seal. The micron-level anti-slip texture of the outer peripheral wall can enhance the friction between the sealing ring and the inner wall of the valve cavity, avoiding the sealing failure caused by the valve core sliding when rotating at high torque. At the same time, the texture can store a small amount of lubricating medium, reduce the wear of the sealing surface, and extend the sealing life.

[0013] Furthermore, a servo motor is mounted on the fixed block, and the output shaft of the servo motor is connected to a first rotating block. The end of the first rotating block away from the servo motor is rotatably connected to a second rotating block via a pin, and the end of the second rotating block away from the first rotating block is rotatably connected to the bottom of the limiting block via a pin.

[0014] The beneficial effects of adopting the above-mentioned further solution are: the servo motor on the fixed block provides power for the locking action, the motor output shaft drives the first rotating block to rotate, drives the second rotating block to swing through the pin shaft, and then drives the limit block to rotate around the third rotating block. The pin shaft connection method ensures that the transmission of each component is flexible, the servo motor can accurately control the rotation angle, realize the precise engagement and disengagement of the limit protrusion and the limit slot, and improve the automation level and control accuracy of locking and unlocking.

[0015] Furthermore, a telescopic spring is connected inside the second rotating block, and the other end of the telescopic spring extends into the third rotating block and is connected to the third rotating block.

[0016] The beneficial effect of adopting the above-mentioned further solution is that the telescopic spring between the second rotating block and the third rotating block is in a pre-compressed state, providing a continuous elastic pre-tightening force for the locking mechanism. When locking, the telescopic spring force pushes the second rotating block, causing the limiting protrusion to be tightly engaged in the limiting slot, preventing disengagement.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, rotating the handwheel drives the valve stem to rotate. The driving gear at the bottom of the valve stem meshes with the driven gear, which in turn meshes with the gear ring on the inner wall of the housing to transmit torque amplified to the housing. This drives the valve core to rotate within the valve body and valve cavity, thus controlling the flow of the medium. In the locking assembly, the third rotating block supports the limiting block, and its integrally formed limiting protrusion engages with the limiting slot of the handwheel to fix the handwheel position and prevent the valve core from moving accidentally. When unlocking, rotating the third rotating block causes the limiting block to swing, disengaging the limiting protrusion from the limiting slot. This achieves high-torque, precise opening and closing of the medium, locking to prevent accidental movement, and convenient unlocking for valve operation control. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a high-torque rotary valve body according to the present invention; Figure 2 This is a schematic diagram of the high-torque rotary assembly structure of a high-torque rotary valve body according to this utility model; Figure 3 This is a structurally disassembled schematic diagram of the high-torque rotary assembly of a high-torque rotary valve body according to this utility model; Figure 4 This is a schematic diagram of the locking assembly structure of a high-torque rotary valve body according to the present invention; Figure 5 This is a structurally disassembled schematic diagram of the locking assembly of a high-torque rotary valve body according to this utility model.

[0019] Figure label: 1. Valve body; 2. High-torque rotating assembly; 21. Connector; 22. Bracket; 23. Valve stem; 24. Handwheel; 25. Drive gear; 26. Driven gear; 27. Housing; 28. Gear ring; 29. ​​Valve core; 210. Rubber sealing ring; 3. Locking assembly; 31. Fixing block; 32. Servo motor; 33. First rotating block; 34. Second rotating block; 35. Limiting block; 36. Third rotating block; 37. Telescopic spring; 38. Limiting protrusion; 39. Limiting slot. Detailed Implementation

[0020] 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.

[0021] like Figures 1-5 As shown, this embodiment provides a technical solution: a high-torque rotary valve body, including a valve body 1, and further comprising: The high-torque rotating assembly 2 includes a connector 21 connected to the top of the valve body 1. A valve stem 23 is rotatably supported on the connector 21. A handwheel 24 is connected to the top of the valve stem 23. A drive gear 25 is connected to the bottom of the valve stem 23. The drive gear 25 meshes with a driven gear 26. The driven gear 26 is rotatably connected to the inside of the connector 21 via a rotating shaft. A housing 27 is rotatably connected to the bottom of the connector 21. A gear ring 28 meshes with the outside of the driven gear 26. The gear ring 28 is connected to the inner wall of the housing 27. A valve core 29 is coaxially connected to the bottom of the housing 27. The valve core 29 extends into the valve cavity of the valve body 1. Locking assembly 3 includes a fixing block 31 connected to the connector 21. A third rotating block 36 is rotatably connected to the top of the fixing block 31. A limiting block 35 is rotatably connected to the top of the third rotating block 36. A limiting protrusion 38 is integrally formed on the side of the limiting block 35 facing the handwheel 24. A limiting groove 39 adapted to the limiting protrusion 38 is opened on the outer peripheral wall of the handwheel 24. The limiting protrusion 38 is engaged in the limiting groove 39. Rotating the handwheel 24 drives the valve stem 23 to rotate. The driving gear 25 at the bottom of the valve stem 23 meshes with and drives the driven gear 26. The driven gear 26 and the housing The gear ring 28 on the inner wall of the housing 27 engages and transmits the torque amplified to the housing 27, driving the valve core 29 to rotate within the valve cavity of the valve body 1, thus achieving the opening and closing of the medium. In the locking assembly 3, the third rotating block 36 supports the limiting block 35, and its integrally formed limiting protrusion 38 is engaged with the limiting slot 39 of the handwheel 24, which can fix the position of the handwheel 24 and prevent the valve core 29 from moving accidentally. When unlocking, the limiting block 35 is swung by rotating the third rotating block 36, causing the limiting protrusion 38 to disengage from the limiting slot 39, thus achieving high torque for precise opening and closing of the medium, locking to prevent accidental movement, and convenient unlocking for valve operation control.

[0022] like Figures 1-2 as well as Figure 4 As shown, a bracket 22 is connected to the top of the connector 21. The valve stem 23 is rotatably connected to the center hole of the bracket 22 via a bearing. The bracket 22 at the top of the connector 21 provides stable support for the valve stem 23. Its center hole is adapted for bearing installation. The valve stem 23 is rotatably connected via the bearing. The bearing can reduce the frictional resistance when the valve stem 23 rotates, ensure the coaxiality of the valve stem 23 during high torque transmission, avoid torque loss caused by uneven wear, and at the same time distribute the radial load borne by the valve stem 23, improving the smoothness and service life of the valve stem 23 rotation under high torque conditions. A sealing groove is opened on the outer peripheral wall of the valve core 29. A rubber sealing ring 210 is embedded in the sealing groove. The rubber sealing ring 210 is interference-fitted with the inner wall of the valve cavity of the valve body 1. The sealing groove on the outer peripheral wall of the valve core 29 is used to fix the rubber sealing ring 210. The sealing ring and the inner wall of the valve cavity of the valve body 1 are interference-fitted, and the seal is sealed after assembly. The ring undergoes elastic deformation, tightly fitting the inner wall of the valve cavity, blocking the medium leakage channel. The interference fit ensures that there are no gaps on the sealing surface under high pressure and high torque conditions, effectively preventing medium penetration and ensuring the reliability of valve sealing. It is suitable for the sealing requirements of various fluid transportation scenarios. The rubber sealing ring 210 has a U-shaped ring structure and is made of hydrogenated nitrile rubber. The outer peripheral wall of the rubber sealing ring 210 is provided with micron-level anti-slip texture. The U-shaped structure of the hydrogenated nitrile rubber sealing ring 210 has excellent elasticity and oil resistance. The U-shaped cavity can generate a self-tightening effect under the action of medium pressure. The higher the pressure, the tighter the seal. The micron-level anti-slip texture on the outer peripheral wall can enhance the friction between the sealing ring and the inner wall of the valve cavity, avoiding the sealing failure caused by the valve core 29 sliding the sealing ring when rotating at high torque. At the same time, the texture can store a small amount of lubricating medium, reduce the wear of the sealing surface, and extend the sealing life. like Figure 1 as well as Figures 4-5 As shown, a servo motor 32 is mounted on the fixed block 31. The output shaft of the servo motor 32 is connected to a first rotating block 33. The end of the first rotating block 33 away from the servo motor 32 is rotatably connected to a second rotating block 34 via a pin. The end of the second rotating block 34 away from the first rotating block 33 is rotatably connected to the bottom of the limit block 35 via a pin. The servo motor 32 on the fixed block 31 provides power for the locking action. The motor output shaft drives the first rotating block 33 to rotate, and drives the second rotating block 34 to swing via the pin, thereby driving the limit block 35 to rotate around the third rotating block 36. The pin connection method ensures flexible transmission of each component. The servo motor 32 can precisely control the rotation angle, enabling precise engagement and disengagement of the limiting protrusion 38 and the limiting slot 39, thus improving the automation and control precision of locking and unlocking. A telescopic spring 37 is connected inside the second rotating block 34, and the other end of the telescopic spring 37 extends into the third rotating block 36 and connects to it. The telescopic spring 37 between the second rotating block 34 and the third rotating block 36 is in a pre-compressed state, providing a continuous elastic pre-tightening force for the locking mechanism. When locking, the telescopic spring 37 pushes the second rotating block 34 with its elastic force, causing the limiting protrusion 38 to be tightly engaged in the limiting slot 39, preventing disengagement.

[0023] Working principle: like Figures 1-5As shown, when the handwheel 24 drives the valve stem 23 to rotate, the driving gear 25 at the bottom of the valve stem 23 rotates synchronously, driving the driven gear 26 through gear meshing. The driven gear 26 then forms a secondary meshing transmission with the gear ring 28 on the inner wall of the housing 27. This multi-stage gear transmission structure greatly amplifies the input torque, transmitting power to the housing 27 and driving the coaxially connected valve core 29 to rotate within the valve cavity of the valve body 1. The rotation angle of the valve core 29 is adjusted to achieve the opening and closing of the medium. The sealing groove on the outer peripheral wall of the valve core 29 fixes a U-shaped sealing ring made of hydrogenated nitrile rubber, which is interference-fitted with the inner wall of the valve cavity. After assembly, the sealing ring elastically deforms and tightly fits the inner wall, blocking the leakage channel. When the medium pressure is applied, the U-shaped cavity generates a self-tightening effect. The higher the pressure, the tighter the seal. The micron-level anti-slip texture on the outer periphery of the sealing ring enhances the friction with the inner wall of the valve cavity and prevents the valve core from rotating under high torque. 29 causes the sealing ring to slide and fail, and can also store lubricating medium to reduce wear on the sealing surface, adapting to the sealing requirements of high-pressure working conditions. The locking component 3 realizes the valve's anti-misoperation control. When locking, the servo motor 32 on the fixed block 31 remains stationary, and the pre-compressed telescopic spring 37 between the second rotating block 34 and the third rotating block 36 provides a continuous elastic pre-tightening force, pushing the second rotating block 34 to drive the limit block 35 to deflect around the third rotating block 36, so that the limit protrusion 38 of the limit block 35 tightly engages with the limit slot 39 on the outer periphery of the handwheel 24, fixing the position of the handwheel 24 and thus locking the valve core 29. When unlocking, the servo motor 32 drives the first rotating block 33 to rotate, and drives the second rotating block 34 to swing through the pin, overcoming the pre-tightening force of the telescopic spring 37 to cause the limit block 35 to deflect in the opposite direction, the limit protrusion 38 to disengage from the limit slot 39, and the handwheel 24 returns to the operable state.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A high-torque rotary valve body, comprising a valve body (1), characterized in that, Also includes: A high-torque rotating assembly (2) includes a connector (21) connected to the top of the valve body (1), a valve stem (23) rotatably supported on the connector (21), a handwheel (24) connected to the top of the valve stem (23), a drive gear (25) connected to the bottom of the valve stem (23), a driven gear (26) meshing with the drive gear (25), the driven gear (26) rotatably connected to the inside of the connector (21) via a rotating shaft, a housing (27) rotatably connected to the bottom of the connector (21), a gear ring (28) meshing with the outside of the driven gear (26), the gear ring (28) connected to the inner wall of the housing (27), a valve core (29) coaxially connected to the bottom of the housing (27), and the valve core (29) extending into the valve cavity of the valve body (1). The locking assembly (3) includes a fixing block (31) connected to the connector (21). The top of the fixing block (31) is rotatably connected to a third rotating block (36). The top of the third rotating block (36) is rotatably connected to a limiting block (35). The limiting block (35) has an integrally formed limiting protrusion (38) facing the handwheel (24). The outer peripheral wall of the handwheel (24) is provided with a limiting groove (39) that matches the limiting protrusion (38). The limiting protrusion (38) is engaged in the limiting groove (39).

2. The high-torque rotary valve body according to claim 1, characterized in that: The top of the connector (21) is connected to a bracket (22), and the valve stem (23) is rotatably connected to the center hole of the bracket (22) via a bearing.

3. The high-torque rotary valve body according to claim 1, characterized in that: The outer peripheral wall of the valve core (29) is provided with a sealing groove, and a rubber sealing ring (210) is embedded in the sealing groove. The rubber sealing ring (210) is interference-fitted with the inner wall of the valve cavity of the valve body (1).

4. The high-torque rotary valve body according to claim 3, characterized in that: The rubber sealing ring (210) has a U-shaped structure and is made of hydrogenated nitrile rubber. The outer peripheral wall of the rubber sealing ring (210) is provided with micron-level anti-slip texture.

5. The high-torque rotary valve body according to claim 1, characterized in that: A servo motor (32) is mounted on the fixed block (31). The output shaft of the servo motor (32) is connected to a first rotating block (33). The end of the first rotating block (33) away from the servo motor (32) is rotatably connected to a second rotating block (34) via a pin. The end of the second rotating block (34) away from the first rotating block (33) is rotatably connected to the bottom of the limiting block (35) via a pin.

6. The high-torque rotary valve body according to claim 5, characterized in that: The second rotating block (34) is connected to a telescopic spring (37), and the other end of the telescopic spring (37) extends into the third rotating block (36) and is connected to the third rotating block (36).

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