Torque amplifying structure of valve actuating mechanism

Abstract

The utility model discloses a torque amplifying structure of a valve actuating mechanism, and relates to the technical field of valves. The top end of the valve body is fixedly connected with a mounting seat; the top end of a rotating shaft of the valve plate extends to the top end of the mounting seat and is fixedly connected with a gear I; one side, close to the gear I, of the top end of the mounting seat is rotatably connected with a gear II; the gear I is meshed with the gear II; a fixed cover is fixedly connected to the top end of the mounting base, and a worm is rotationally connected between the two sides of the inner wall of the fixed cover and located above the second gear; through the arrangement of the worm gear and the worm, the worm gear obtains torque larger than that of the worm during rotation, so that the valve executing mechanism is driven to work more easily, the diameter of the second gear is set to be larger than that of the first gear, and under the condition that the transmission ratio is certain, the larger second gear can provide larger output torque; and the valve actuating mechanism is further conveniently driven to work.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve actuator torque amplification structure. Background Art

[0002] A valve is a device used to control the flow of fluids (such as water, oil, gas, etc.) and has multiple functions such as switching, regulating, diverting, preventing backflow, stabilizing pressure, and diverting. It opens or closes the pipeline by rotating or lifting the valve disc and other components, thereby achieving precise control and regulation of fluid flow, pressure, temperature and other parameters. Valves are widely used in various industrial, civil and scientific research fields. Valves achieve actuator torque amplification through lever transmission.

[0003] However, traditional valve actuators have deficiencies in torque amplification, resulting in difficult operation and low efficiency. To address the above problems, the inventors propose a valve actuator torque amplification structure to solve the above problems. Utility Model Content

[0004] In order to solve the problem that a valve actuator has insufficient torque amplification and is difficult to operate, the purpose of the utility model is to provide a valve actuator torque amplification structure.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a valve actuator torque amplification structure, including a valve body, a valve plate is rotatably installed inside the valve body, the top of the valve body is fixedly connected to a mounting seat, the top of the valve plate rotation shaft extends to the top of the mounting seat and is fixedly connected to gear one, the top of the mounting seat is rotatably connected to gear two on the side close to gear one, gear one and gear two are meshed together, the diameter of gear two is larger than the diameter of gear one, the top of the mounting seat is fixedly connected to a fixed cover, a worm is rotatably connected between the two sides of the inner wall of the fixed cover and above gear two, a worm is fixedly connected to the outside of the gear two rotation shaft with a worm wheel, the worm wheel is meshed with the worm, and one end of the worm rotation shaft extends to the outside of the fixed cover and is fixedly connected to a turning handle.

[0006] Preferably, the turning handle includes a sleeve, and a telescopic plate is slidably engaged inside the sleeve, and the top of the telescopic plate is fixedly connected to the rotating shaft of the worm, and one side of the top of the sleeve is fixedly connected to two symmetrically distributed fixed plates, and a pressing plate is rotatably connected between the two fixed plates, and the pressing plate is fixedly connected to the side of the telescopic plate close to the telescopic plate. The side of the telescopic plate close to the fixed plate is provided with equidistantly distributed slots, and the inserting rod is movably inserted in the slot, and the outer sides of the rotating shafts on both sides of the pressing plate are movably sleeved with torsion springs, and the two ends of the torsion spring are respectively fixedly connected to the pressing plate and the fixed plate, and the diameter of the slot gap is larger than the diameter of the inserting rod.

[0007] Preferably, bearings are provided at the places where the outer sides of the rotating shafts at both ends of the worm contact the fixed cover.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] 1. Through the setting of the worm gear, the worm gear obtains a greater torque than the worm when rotating, making it easier to drive the valve actuator to work. In addition, the diameter of gear 2 is set to be larger than the diameter of gear 1. Under the condition of a certain transmission ratio, the larger gear 2 can provide a greater output torque, further facilitating the driving of the valve actuator to work;

[0010] 2. By adjusting the extension length of the telescopic plate along the inside of the sleeve, the length of the lever arm of the handle is adjusted, and the extension length of the telescopic plate is fixed by the cooperation between the plug rod and the slot, so that the operator can open or close the valve with less force, reducing the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model.

[0014] Figure 3 It is a structural schematic diagram of the transfer handle of the present utility model.

[0015] Figure 4 For this utility model Figure 3 Enlarged view of point A in the middle.

[0016] In the figure: 1. Valve body; 2. Valve plate; 3. Mounting seat; 4. Gear 1; 5. Gear 2; 6. Worm gear; 7. Worm; 8. Fixed cover; 9. Turning handle; 91. Telescopic plate; 92. Sleeve; 93. Slot; 94. Fixed plate; 95. Pressing plate; 96. Insert rod; 97. Torsion spring; 10. Bearing. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example: Figure 1-4 As shown, the utility model provides a valve actuator torque amplification structure, including a valve body 1, a valve plate 2 is rotatably installed inside the valve body 1, the top of the valve body 1 is fixedly connected to a mounting seat 3, the top of the valve plate 2 rotation shaft extends to the top of the mounting seat 3 and is fixedly connected to a gear 1 4, the top of the mounting seat 3 is rotatably connected to a gear 2 5 near the side of the gear 1 4, the gear 1 4 and the gear 2 5 are meshed together, the top of the mounting seat 3 is fixedly connected to a fixed cover 8, a worm 7 is rotatably connected between the two sides of the inner wall of the fixed cover 8 and above the gear 2 5, a worm gear 6 is fixedly connected to the outside of the rotating shaft of the gear 2 5, the worm gear 6 is meshed with the worm 7, and one end of the rotating shaft of the worm 7 extends to the outside of the fixed cover 8 and is fixedly connected to a turning handle 9.

[0019] The turning handle 9 includes a sleeve 92 , and a telescopic plate 91 is slidably engaged inside the sleeve 92 . The top of the telescopic plate 91 is fixedly connected to the rotating shaft of the worm 7 .

[0020] By adopting the above technical solution, the extension length of the telescopic plate 91 is adjusted along the inside of the sleeve 92, thereby adjusting the length of the lever arm of the turning handle 9, so that the operator can open or close the valve with less force, reducing the difficulty of operation.

[0021] Two symmetrically distributed fixed plates 94 are fixedly connected to one side of the top of the sleeve 92, and a pressing plate 95 is rotatably connected between the two fixed plates 94. An insertion rod 96 is fixedly connected to the side of the pressing plate 95 close to the telescopic plate 91. Equally spaced slots 93 are provided on the side of the telescopic plate 91 close to the fixed plate 94, and the insertion rod 96 is movably inserted into the slot 93. Torsion springs 97 are movably sleeved on the outer sides of the rotating shafts on both sides of the pressing plate 95, and the two ends of the torsion spring 97 are respectively fixedly connected to the pressing plate 95 and the fixed plate 94.

[0022] By adopting the above technical solution, by pressing the pressing plate 95 toward one side of the telescopic plate 91, away from the end of the insertion rod 96, the pressing plate 95 is driven to rotate, and the torsion spring 97 is compressed, so that the insertion rod 96 is disengaged from the inside of the slot 93, and the restriction on the sliding of the telescopic plate 91 along the inside of the sleeve 92 is released. When the handle 9 is adjusted to the appropriate length, by loosening the pressing plate 95, the elastic force of the torsion spring 97 is used to make the insertion rod 96 inserted into the corresponding slot 93, thereby fixing the relative position of the telescopic plate 91 and the sleeve 92, thereby facilitating the adjustment of the length of the telescopic plate 91.

[0023] The diameter of gear 2 5 is larger than the diameter of gear 1 4 .

[0024] By adopting the above technical solution, by setting the diameter of gear 2 5 to be larger than that of gear 1 4, under the condition of a certain transmission ratio, the larger gear can provide a larger output torque, thereby making it easier to drive the valve actuator to work.

[0025] The diameter of the slot 93 is larger than the diameter of the insertion rod 96 .

[0026] By adopting the above technical solution, by setting the diameter of the gap of the slot 93 to be larger than the diameter of the insertion rod 96 , the insertion rod 96 can be better inserted into the slot 93 .

[0027] Bearings 10 are provided at the contact points between the outer sides of the rotating shafts at both ends of the worm 7 and the fixed cover 8 .

[0028] By adopting the above technical solution and providing the bearing 10 , it is easier to rotate the adjustment handle 9 .

[0029] Working principle: When the valve uses the actuator, by turning the handle 9, the worm 7 is driven to rotate, and the worm wheel 6 and the worm 7 are meshed and connected, which drives the gear 2 5 and the worm wheel 6 to rotate at the same time. The self-locking function between the worm wheel 6 and the worm 7 is used to prevent the valve from opening or closing by itself when no external force is applied. The worm gear mechanism also has a certain torque amplification function. Due to the design of the meshing angle and the gear ratio of the worm and the worm wheel, the worm wheel can obtain a greater torque than the worm when rotating, making it easier to drive the valve actuator to work.

[0030] Gear 2 5 is meshed with gear 1 4 to drive gear 1 4 and valve plate 2 to rotate, thereby controlling the opening and closing of valve plate 2. The diameter of gear 2 5 is set to be larger than that of gear 1 4. Under a certain transmission ratio, the larger gear 2 5 can provide a greater output torque, further facilitating the operation of the valve actuator.

[0031] At the same time, by adjusting the extended length of the telescopic plate 91 along the inside of the sleeve 92, the length of the lever arm of the turning handle 9 is adjusted, and the extended length of the telescopic plate 91 is fixed by utilizing the cooperation between the insertion rod 96 and the slot 93, so that the operator can open or close the valve with less force, reducing the difficulty of operation.

[0032] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A valve actuator torque amplification structure, comprising a valve body (1), characterized in that: The valve body (1) is internally rotatably mounted with a valve plate (2), the top end of the valve body (1) is fixedly connected to a mounting seat (3), the top end of the valve plate (2) rotation axis extends to the top end of the mounting seat (3) and is fixedly connected to a gear one (4), the top end of the mounting seat (3) is rotatably connected to a gear two (5) on a side close to the gear one (4), the gear one (4) and the gear two (5) are meshingly connected, the top end of the mounting seat (3) is fixedly connected to a fixed cover (8), a worm (7) is rotatably connected between the two sides of the inner wall of the fixed cover (8) and located above the gear two (5), the outer side of the gear two (5) rotation axis is fixedly connected to a worm wheel (6), the worm wheel (6) is meshingly connected to the worm wheel (7), one end of the worm wheel (7) rotation axis extends to the outer side of the fixed cover (8) and is fixedly connected to a turning handle (9).

2. A valve actuator torque amplification structure according to claim 1, characterized in that: The turning handle (9) comprises a sleeve (92), a telescopic plate (91) is slidably engaged inside the sleeve (92), and the top of the telescopic plate (91) is fixedly connected to the rotating shaft of the worm (7).

3. A valve actuator torque amplification structure according to claim 2, characterized in that: One side of the top of the sleeve (92) is fixedly connected to two symmetrically distributed fixing plates (94), a pressing plate (95) is rotatably connected between the two fixing plates (94), a plugging rod (96) is fixedly connected to the side of the pressing plate (95) close to the telescopic plate (91), and a side of the telescopic plate (91) close to the fixing plate (94) is provided with slots (93) distributed at equal intervals, and the plugging rod (96) is movably inserted into the slots (93).

4. A valve actuator torque amplification structure according to claim 3, characterized in that: Torsion springs (97) are movably sleeved on the outer sides of the rotating shafts on both sides of the pressing plate (95), and the two ends of the torsion spring (97) are fixedly connected to the pressing plate (95) and the fixing plate (94) respectively.

5. The valve actuator torque amplification structure according to claim 1, characterized in that: The diameter of the gear 2 (5) is greater than the diameter of the gear 1 (4).

6. A valve actuator torque amplification structure according to claim 3, characterized in that: The diameter of the slot (93) gap is larger than the diameter of the insertion rod (96).

7. The valve actuator torque amplification structure according to claim 1, characterized in that: Bearings (10) are provided at the contact points between the outer sides of the rotating shafts at both ends of the worm (7) and the fixed cover (8).

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