Low-temperature valve actuator capable of automatically adding lubricating oil

Abstract

The utility model is applicable to the technical field of valve actuators, and provides a low-temperature valve actuator capable of automatically adding lubricating oil, which comprises a box body, a transmission component and an execution component arranged in the box body, and an automatic oil adding component arranged at the top of the box body, the automatic oil adding assembly comprises a connecting pipe communicated with the box body, an oil storage cavity formed in one side of the connecting pipe, a sealing mechanism and a jacking mechanism, wherein the sealing mechanism and the jacking mechanism are arranged in the connecting pipe, and the jacking mechanism comprises an upper jacking pipe and a lower jacking pipe which are symmetrically arranged. The device solves the problem that the service life of the valve actuator is shortened due to the fact that the probability of damage of parts in the valve actuator is increased to a certain extent when the valve actuator is frequently opened to add lubricating oil in a low-temperature environment, and achieves the effects that the lubricating oil can be automatically added without opening the valve actuator in the low-temperature environment, and the service life of the valve actuator is prolonged. And the damage probability of internal parts caused by frequent opening and closing of the actuator is effectively prevented from being increased.

Description

Technical Field

[0001] The utility model relates to the technical field of valve actuators, and more particularly to a low-temperature valve actuator capable of automatically adding lubricating oil. Background Art

[0002] A valve actuator is a device used in industrial automation to control the opening and closing of valves. It converts energy into mechanical motion to manipulate the position of the valve, thereby regulating the flow, pressure and direction of the fluid.

[0003] Valve actuators operating in low-temperature environments require not only lubrication with specially formulated grease, but also more frequent lubrication to reduce wear on internal components, extend equipment life, and maintain performance. However, frequently opening the valve actuator to add lubricant in low-temperature environments increases the risk of damage to internal components, thereby shortening the life of the valve actuator.

[0004] Therefore, it is necessary to provide a device that can store lubricating oil inside the valve actuator. When lubricating oil needs to be frequently added in low-temperature environments, the lubricating oil can be automatically added without opening the valve actuator. This effectively avoids the problem of frequent opening and closing of the actuator, which increases the probability of damage to the actuator's internal components and reduces the life of the valve actuator. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the purpose of the utility model is to provide a low-temperature valve actuator that automatically adds lubricating oil without opening the valve actuator in a low-temperature environment, effectively avoiding the increased probability of damage to the internal components of the actuator caused by frequent opening and closing of the actuator.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A low-temperature valve actuator that automatically adds lubricating oil includes a housing, a transmission assembly and an actuator assembly arranged inside the housing, and an automatic oil-refilling assembly arranged on the top of the housing. The automatic oil-refilling assembly includes a connecting pipe connected to the housing, an oil storage chamber arranged on one side of the connecting pipe, and a sealing mechanism and a lifting mechanism arranged inside the connecting pipe. The lifting mechanism includes an upper lifting pipe and a lower lifting pipe arranged symmetrically, and a second lifting rod arranged inside the upper lifting pipe.

[0008] The utility model is further configured as follows: the connecting pipe is arranged on the top of the box body, the lifting mechanism is arranged on the side of the connecting pipe close to the box body, and the sealing mechanism is arranged on the side away from the box body, and the interior of the oil storage cavity is communicated with the interior of the connecting pipe.

[0009] The utility model is further configured as follows: the upper jacking pipe and the lower jacking pipe are configured as hollow circular tube structures with the same structure; the outer side walls of the upper jacking pipe and the lower jacking pipe are each provided with a group of clamp rings, and the clamp rings are provided through the side walls of the connecting pipe.

[0010] The utility model is further configured as follows: an oil filling through hole is opened inside the lower lifting pipe, the oil filling through hole is connected to the inside of the box body, an oil filling sleeve with a hollow circular tube structure is provided inside the upper lifting pipe, and the second lifting rod is inserted into the oil filling sleeve.

[0011] The utility model is further configured as follows: the top of the second lifting rod is connected to the sealing mechanism, and the bottom is connected to a lifting block, the lifting block is configured as a conical structure with a larger upper portion and a smaller lower portion, and the shape of the lifting block is adapted to the shape of the oil refilling through hole.

[0012] By adopting the above technical solution, the second lifting rod moves upward in the vertical direction, which can synchronously drive the oil-replenishing sleeve and the lifting block to move upward, thereby separating the lifting block from the oil-replenishing through hole, and realizing the connection between the box body, the oil-replenishing through hole and the oil storage chamber, so that the lubricating oil can flow from the inside of the oil storage chamber to the inside of the box body, thereby adding lubricating oil to the inside of the box body.

[0013] The utility model is further configured as follows: the sealing mechanism includes a first lifting rod arranged at the top of the lifting mechanism, the top of the first lifting rod passes through the connecting pipe, and a locking piece is connected to its end, an adjusting spring is arranged around the outside of the first lifting rod, the locking piece is installed on the top of the connecting pipe, and a locking rocker is rotatably installed on one end of the first lifting rod.

[0014] By adopting the above technical solution, the locking member can be synchronously driven to rotate by rotating the locking rocker arm. During the rotation of the locking member, the lifting rod and the lifting rod can be synchronously driven to move in the vertical direction, and finally the lifting block is separated from the oil refilling hole, so that the lubricating oil inside the oil storage chamber can flow into the inside of the box.

[0015] The utility model is further configured as follows: the transmission assembly includes a motor and a handwheel arranged on both sides of the box body and an active worm arranged inside the box body, the output end of the motor is connected to a worm wheel, and the worm wheel and the active worm wheel are meshed with each other.

[0016] The utility model is further configured as follows: a plurality of sets of mating gears are arranged around the lower part of the active worm, a transmission worm is arranged on the outside of the plurality of sets of mating gears, the active worm and the mating gears, the mating gears and the transmission worm are meshed with each other, and the side wall of the handwheel is meshed with the transmission worm.

[0017] The utility model is further configured as follows: the execution assembly includes a rotating valve rod that passes through the active worm and the transmission worm. The rotating valve rod is coaxial with the active worm and the transmission worm, and a rotating disk is connected to the bottom of the rotating valve rod.

[0018] The beneficial effects of the utility model are:

[0019] 1. When the valve actuator is in a low-temperature environment and lacks lubricating oil, the lifting block is separated from the oil-replenishing hole to transfer the lubricating oil from the oil storage chamber to the inside of the box, and lubricating oil is added to the box in time to prevent the valve actuator from affecting the operation of internal parts due to lack of lubricating oil in a low-temperature environment.

[0020] 2. When the valve actuator is in a low-temperature environment, the lifting block can be manually separated from the oil refilling hole by rotating the locking rocker, so that the lubricating oil inside the oil storage chamber can flow into the box body, thereby achieving the purpose of adding lubricating oil to the valve actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a structural diagram of a low-temperature valve actuator that automatically adds lubricating oil according to the utility model.

[0023] Figure 2 for Figure 1 The schematic diagram of the structure of the automatic oil filling component is shown.

[0024] Figure 3 for Figure 2 Schematic diagram of the internal structure of the automatic oil filling component.

[0025] Figure 4 for Figure 3 Front view of the automatic oil refill assembly shown.

[0026] Figure 5 for Figure 3 A partial schematic diagram of another state of the automatic oil filling component is shown.

[0027] Figure 6 for Figure 1 Schematic diagram of the exploded structure of the box, transmission assembly and actuator assembly shown.

[0028] Figure 7 for Figure 1 Schematic diagram of the structure inside the box.

[0029] Description of reference numerals: 1. box body;

[0030] 2. Transmission assembly; 21. Motor; 22. Worm gear; 23. Active worm; 24. Mating gear; 25. Transmission worm; 26. Handwheel;

[0031] 3. Actuator; 31. Rotate the valve stem; 32. Rotate the disc;

[0032] 4. Automatic oil refilling assembly; 41. Connecting pipe; 42. Oil storage chamber; 43. Sealing mechanism; 431. Locking piece; 432. First lifting rod; 433. Adjusting spring; 434. Locking rocker; 44. Lifting mechanism; 441. Upper lifting pipe; 442. Lower lifting pipe; 443. Oil refilling hole; 444. Oil refilling sleeve; 445. Second lifting rod; 446. Lifting block; 447. Clamp ring. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is now described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basics of the present invention in an illustrative manner, and therefore only shows the structures related to the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Please refer to Figure 1-7 A low-temperature valve actuator with automatic lubrication includes a housing 1, a transmission assembly 2 and an actuator 3 disposed within the housing 1, and an automatic lubrication assembly 4 disposed on top of the housing 1. The housing 1 is connectable to a valve. The transmission assembly 2 within the housing 1 drives the actuator 3 to rotate, thereby controlling the opening and closing of the valve. The automatic lubrication assembly 4 adds lubricating oil to the balance housing 1.

[0035] Please refer to Figure 1 and Figure 6-7 The transmission assembly 2 includes a motor 21 and a handwheel 26 arranged on both sides of the box body 1 and an active worm 23 arranged inside the box body 1. The motor 21 is arranged in the horizontal direction, and its output end is arranged on the side close to the center of the box body 1. The output end of the motor 21 passes through the box body 1 inward, and the output end of the motor 21 is connected to a worm gear 22. The worm gear 22 is coaxially arranged with the motor 21, and the worm gear 22 and the active worm gear 23 are provided with mutually meshing threads, so that the worm gear 22 and the active worm gear 23 can be meshed. The motor 21 can drive the worm gear 22 to rotate, and further through the meshing between the worm gear 22 and the active worm gear 23, the active worm gear 23 is synchronously driven to rotate.

[0036] Please refer to Figure 1 and Figure 6-7The lower part of the active worm 23 is surrounded by multiple sets of mating gears 24. The mating gears 24 are all provided with threads that mesh with the threads on the active worm 23, so that the active worm 23 and the mating gears 24 can mesh. A transmission worm 25 is provided on the outside of the multiple sets of mating gears 24. The transmission worm 25 is located at the bottom of the active worm 23 and its position corresponds to the position of the handwheel 26. The side wall of the transmission worm 25 is provided with threads that mesh with the threads on the mating gears 24. The active worm 23 and the mating gears 24, and the mating gears 24 and the transmission worm 25 are meshed with each other. The rotation of the active worm 23 can synchronously drive the multiple sets of mating gears 24 meshing with it to rotate synchronously, and then the meshing between the mating gears 24 and the transmission worm 25 drives the transmission worm 25 to rotate. The hand wheel 26 passes through the side wall of the box body 1 and is provided with a thread on the side wall close to the center of the box body 1 that engages with the thread on the transmission worm 25. The transmission worm 25 can also be driven to rotate by rotating the hand wheel 26.

[0037] Please refer to Figure 1 and Figure 6-7 The actuator 3 includes a rotating valve stem 31 that extends through the driving worm 23 and the transmission worm 25. The rotating valve stem 31 is coaxial with the driving worm 23 and the transmission worm 25 and rotates synchronously with the driving worm 23 and the transmission worm 25. Whether the driving worm 23 is driven by the motor 21 or the transmission worm 25 is driven by the handwheel 26, the rotating valve stem 31 can be rotated. A rotating disk 32 is connected to the bottom of the rotating valve stem 31. Rotation of the rotating valve stem 31 synchronously drives the rotating disk 32 to rotate, thereby controlling the opening and closing of the valve using the rotating disk 32.

[0038] Please refer to Figure 1-5 The automatic oil-refilling assembly 4 includes a connecting pipe 41 in communication with the housing 1, an oil storage chamber 42 provided on one side of the connecting pipe 41, and a sealing mechanism 43 and a lifting mechanism 44 provided inside the connecting pipe 41. The connecting pipe 41 is provided at the top of the housing 1, and a lifting mechanism 44 is provided on the side of the connecting pipe 41 close to the housing 1, and a sealing mechanism 43 is provided on the side away from the housing 1. The connecting pipe 41 is in communication with the interior of the oil storage chamber 42, and the opening and closing of the lifting mechanism 44 can realize the communication between the interior of the housing 1 and the oil storage chamber 42. When the interior of the housing 1 lacks lubricating oil, the lifting mechanism 44 opens, and the lubricating oil inside the oil storage chamber 42 can enter the interior of the housing 1 through the lifting mechanism 44.

[0039] Please refer to Figure 1-5The lifting mechanism 44 includes a symmetrically arranged upper lifting tube 441 and lower lifting tube 442, and a second lifting rod 445 disposed within the upper lifting tube 441. The upper lifting tube 441 and the lower lifting tube 442 are configured as hollow circular tubes with identical structures. The upper lifting tube 441 is located on top of the lower lifting tube 442, with a certain distance between them. A set of clamp rings 447 are respectively provided on the outer walls of the upper lifting tube 441 and the lower lifting tube 442. The clamp rings 447 extend through the side walls of the connecting tube 41. The two sets of clamp rings 447 can secure the upper lifting tube 441 and the lower lifting tube 442 to the connecting tube 41.

[0040] Please refer to Figure 1-5 The upper lifting tube 441 is provided with an oil refilling sleeve 444 with a hollow circular tube structure. The outer diameter of the oil refilling sleeve 444 matches the inner diameter of the upper lifting tube 441 and can move vertically inside the upper lifting tube 441. The second lifting rod 445 is inserted into the oil refilling sleeve 444. The top of the second lifting rod 445 is connected to the sealing mechanism 43, and the bottom is connected to the lifting block 446. The lower lifting tube 442 is provided with an oil refilling through hole 443, and the oil refilling through hole 443 is connected to the interior of the box body 1. The lifting block 446 is set as a conical structure with a larger upper part and a smaller lower part. The shape of the lifting block 446 matches the shape of the oil refilling through hole 443. The second lifting rod 445 moves upward in the vertical direction, which can synchronously drive the oil-replenishing sleeve 444 and the lifting block 446 to move upward, thereby separating the lifting block 446 from the oil-replenishing hole 443, and realizing the connection between the box body 1, the oil-replenishing hole 443 and the oil storage chamber 42, so that the lubricating oil can flow from the inside of the oil storage chamber 42 to the inside of the box body 1, thereby adding lubricating oil to the inside of the box body 1.

[0041] When the valve actuator is in a low-temperature environment and lacks lubricating oil, the lifting block 446 is separated from the oil-replenishing hole 443 to enable the lubricating oil to flow from the inside of the oil storage chamber 42 to the inside of the box body 1, so that lubricating oil is added to the inside of the box body 1 in time to prevent the valve actuator from affecting the operation of internal parts due to lack of lubricating oil in a low-temperature environment.

[0042] Please refer to Figure 1-5The sealing mechanism 43 includes a first lifting rod 432 arranged at the top of the lifting mechanism 44. The first lifting rod 432 is coaxially arranged with the second lifting rod 445 and can move synchronously with the second lifting rod 445. The top of the first lifting rod 432 is set through the connecting pipe 41, and a locking member 431 is connected to its end. The locking member 431 is installed on the top of the connecting pipe 41, and a locking rocker 434 is rotatably installed on one end of the locking member. The side wall of the locking rocker 434 abuts against the end of the locking member 431. By rotating the locking rocker 434, the locking member 431 can be synchronously driven to rotate. During the rotation of the locking member 431, the first lifting rod 432 and the second lifting rod 445 can be synchronously driven to move in the vertical direction, and finally the lifting block 446 is separated from the oil refilling hole 443. An adjustment spring 433 is arranged around the outer side of the first lifting rod 432. The adjustment spring 433 can provide a buffer for the first lifting rod 432 during its movement, thereby extending the service life of the first lifting rod 432 in a low temperature environment.

[0043] When the valve actuator is in a low temperature environment, the lifting block 446 can be manually separated from the oil filling hole 443 by rotating the locking rocker 434, so that the lubricating oil inside the oil storage chamber 42 can flow into the inside of the box body 1, thereby achieving the purpose of adding lubricating oil to the valve actuator.

[0044] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections; they may refer to direct connections or indirect connections through an intermediate medium; they may refer to internal communication between two components or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0045] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] The above description is based on the ideal embodiment of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the scope of the present invention. The technical scope of this utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A cryogenic valve actuator with automatic lubricating oil addition, characterized by: The invention comprises a housing (1), a transmission assembly (2) and an execution assembly (3) arranged inside the housing (1), and an automatic oil-refilling assembly (4) arranged on the top of the housing (1); the automatic oil-refilling assembly (4) comprises a connecting pipe (41) connected to the housing (1), an oil storage chamber (42) arranged on one side of the connecting pipe (41), and a sealing mechanism (43) and a lifting mechanism (44) arranged inside the connecting pipe (41); the lifting mechanism (44) comprises an upper lifting pipe (441) and a lower lifting pipe (442) arranged symmetrically, and a second lifting rod (445) arranged inside the upper lifting pipe (441).

2. The low-temperature valve actuator with automatic lubricating oil addition according to claim 1, characterized in that: The connecting pipe (41) is arranged on the top of the box body (1); the lifting mechanism (44) is arranged on the side of the connecting pipe (41) close to the box body (1), and the sealing mechanism (43) is arranged on the side away from the box body (1); the interior of the oil storage cavity (42) is communicated with the interior of the connecting pipe (41).

3. The low-temperature valve actuator with automatic lubricating oil addition according to claim 1, characterized in that: The upper lifting pipe (441) and the lower lifting pipe (442) are configured as hollow circular tube structures with the same structure. The outer side walls of the upper lifting pipe (441) and the lower lifting pipe (442) are each provided with a group of clamp rings (447), and the clamp rings (447) are provided through the side wall of the connecting pipe (41).

4. The low-temperature valve actuator with automatic lubricating oil addition according to claim 3, characterized in that: An oil refilling hole (443) is provided inside the lower lifting pipe (442), and the oil refilling hole (443) is communicated with the inside of the box (1). An oil refilling sleeve (444) with a hollow circular tube structure is provided inside the upper lifting pipe (441), and the second lifting rod (445) is inserted into the oil refilling sleeve (444).

5. The low-temperature valve actuator with automatic lubricating oil addition according to claim 4, characterized in that: The top of the second lifting rod (445) is connected to the sealing mechanism (43), and the bottom is connected to a lifting block (446). The lifting block (446) is configured as a conical structure with a larger upper portion and a smaller lower portion. The shape of the lifting block (446) is adapted to the shape of the oil refilling through hole (443).

6. The low-temperature valve actuator with automatic lubricating oil addition according to claim 1, characterized in that: The sealing mechanism (43) includes a first lifting rod (432) arranged at the top of the lifting mechanism (44), the top of the first lifting rod (432) passes through the connecting tube (41), and the end thereof is connected to a locking member (431), an adjusting spring (433) is arranged around the outside of the first lifting rod (432), the locking member (431) is installed at the top of the connecting tube (41), and a locking rocker (434) is rotatably installed at one end thereof.

7. The low-temperature valve actuator with automatic lubricating oil addition according to claim 1, characterized in that: The transmission assembly (2) comprises a motor (21) and a handwheel (26) arranged on both sides of the box (1), and an active worm (23) arranged inside the box (1); the output end of the motor (21) is connected to a worm wheel (22), and the worm wheel (22) and the active worm (23) are meshed with each other.

8. The low-temperature valve actuator with automatic lubricating oil addition according to claim 7, characterized in that: The lower part of the active worm (23) is surrounded by a plurality of sets of mating gears (24), and a transmission worm (25) is provided outside the plurality of sets of mating gears (24). The active worm (23) and the mating gears (24), and the mating gears (24) and the transmission worm (25) are meshed with each other, and the side wall of the hand wheel (26) is meshed with the transmission worm (25).

9. The low-temperature valve actuator with automatic lubricating oil addition according to claim 8, characterized in that: The actuator assembly (3) comprises a rotating valve stem (31) that passes through the active worm (23) and the transmission worm (25). The rotating valve stem (31) is coaxially arranged with the active worm (23) and the transmission worm (25), and a rotating disk (32) is connected to the bottom of the rotating valve stem (31).

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