Gear motor for valve actuator

Abstract

The utility model relates to the technical field of valves, and discloses a gear motor for a valve actuator, which comprises a fixing plate, a lubricating oil tank is mounted at the top of the fixing plate, a hollow frame is mounted at the top end of the lubricating oil tank, and a turbine worm reducer is mounted in an inner cavity of the hollow frame. According to the gear motor for the valve actuator, in the working process, lubricating oil drips on the worm, the lubricating oil on the worm continues to fall on the worm gear, and therefore in the working process of the gear motor, the lubricating oil can be dropwise added to the worm gear end and the worm end, the lubricating oil can fill tiny gaps between tooth grooves of a gear, and the lubricating oil is prevented from falling off. Lubricating oil forms a lubricating film between the tooth surfaces, on one hand, direct contact between the worm gear and the worm is reduced, friction and abrasion are effectively reduced, on the other hand, the gear is smoother during operation, lubricating oil does not need to be added after the speed reduction motor is disassembled, and convenience is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a reduction motor for a valve actuator. Background Art

[0002] The valve actuator is an essential and important part of the automatic control system. Its function is to receive the control signal sent by the controller, change the size of the controlled medium, and thus maintain the controlled variable at the required value or within a certain range. The driving source of the valve actuator is usually controlled by a reduction motor.

[0003] Prior art, such as publication number: CN213305154U discloses a reduction motor for a valve actuator, including a base plate and a reduction motor, the reduction motor including a reduction gear box and a motor, and the reduction gear box is located directly above the base plate, and a sleeve is vertically fixedly connected to the top of the base plate, and there are four sleeves that are arranged in parallel. The utility model avoids excessive heat of the motor, resulting in excessive wear on the reduction motor, reducing its service life, and thus increasing the service life of the reduction motor.

[0004] With respect to the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: if the valve needs to be opened and closed frequently, the reduction motor needs to be started and stopped frequently, which will increase the wear of the reduction motor, especially the gear transmission end of the reduction motor, which will suffer greater wear and tear. The meshing relationship between the gears will be affected, resulting in a decrease in the deceleration effect and shortening the service life of the reduction motor. Utility Model Content

[0005] In view of the above-mentioned existing problem that if the valve needs to be opened and closed frequently, the reduction motor needs to be started and stopped frequently, which will increase the wear of the reduction motor, especially the gear transmission end of the reduction motor, which has greater wear and tear, and the meshing relationship between the gears will be affected, resulting in a decrease in the deceleration effect and a shortened service life of the reduction motor, the present utility model is proposed.

[0006] Therefore, the utility model aims to provide a reduction motor for a valve actuator, the purpose of which is to alleviate the wear between gears and increase the service life of the reduction motor.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a reduction motor for a valve actuator, comprising a fixed plate, a lubricating oil tank is installed on the top of the fixed plate, a hollow frame is installed on the top of the lubricating oil tank, a worm gear reducer is installed in the inner cavity of the hollow frame, a worm end of the worm gear reducer is fixedly connected to the driving end of a servo motor, and the servo motor is installed on the right side of the hollow frame, a lubrication assembly is installed on the left side of the hollow frame, and the liquid inlet end of the lubrication assembly is connected to the liquid outlet of the lubricating oil tank, and at the same time, the liquid outlet end of the lubrication assembly is located inside the worm gear reducer and directly above the worm gear;

[0008] The lubrication assembly includes a lubricating oil pump installed on the left side of the hollow frame, and an outer protective shell installed on the left side of the hollow frame and covering and protecting the lubricating oil pump. The liquid inlet end of the lubricating oil pump is installed with a liquid inlet pipe, and the liquid inlet end of the liquid inlet pipe is fixed at the left liquid outlet of the lubricating oil tank. The liquid outlet end of the lubricating oil pump is installed with a liquid outlet pipe, and the liquid outlet end of the liquid outlet pipe is fixedly connected to an arc-shaped bin, and an oil discharge hole is provided on the arc-shaped surface of the bottom of the arc-shaped bin.

[0009] As a preferred solution of the reduction motor for a valve actuator described in the utility model, support columns are welded between the four corners of the top of the lubricating oil tank and the four corners of the bottom of the hollow frame, recovery ports are penetrated through the worm gear reducer and directly below the bottom of the hollow frame, a recovery bin is welded at the position of the recovery port at the bottom of the hollow frame, and the liquid outlet of the recovery bin is fixedly connected to the liquid inlet at the top of the lubricating oil tank.

[0010] As a preferred solution of the reduction motor for a valve actuator described in the utility model, a connecting pipe is welded at the liquid inlet on the top of the arc-shaped bin, and the liquid inlet end of the connecting pipe is connected to the liquid outlet end of the liquid outlet pipe.

[0011] As a preferred solution of the reduction motor for a valve actuator described in the utility model, the lubrication assembly also includes an oil equalizing assembly installed on one side of the worm gear reducer, and the bristle end of the oil equalizing assembly is in contact with the tooth surface of the worm gear.

[0012] As a preferred solution of a reduction motor for a valve actuator described in the utility model, the oil balancing assembly includes an empty box installed inside a worm gear reducer, a connecting plate is provided on the rear side of the empty box, a brush plate is detachably installed on the side of the connecting plate away from the empty box, silicone bristles are installed on the side of the brush plate away from the connecting plate, and the silicone bristles are in contact with the tooth surface of the worm gear.

[0013] As a preferred solution for a reduction motor for a valve actuator described in the utility model, sliding holes are penetrated on both sides of the empty box close to the connecting plate, and two T-shaped movable columns are slidably installed on the empty box through the sliding holes, and a spring is sleeved on the outer wall surface of the movable column.

[0014] As a preferred solution of the reduction motor for a valve actuator described in the utility model, wherein: fixed cavities are opened on both sides of the connecting plate away from the spring, magnets are installed inside the fixed cavities, and iron blocks are installed on both sides of the brush plate away from the silicone bristles, and the opposite surfaces of the iron block and the magnet are in a magnetic attraction state.

[0015] Beneficial effects of the utility model:

[0016] 1. The utility model shortens the distance between the connecting plate and the empty box and expands the distance between the connecting plate and the worm gear when installing the silicone bristles, thereby facilitating the fixing of the bristle plate on the connecting plate. At the same time, the bristle plate is installed by magnetic adsorption between a magnet and an iron block, which further facilitates the assembly and disassembly of the bristle plate and the replacement of the silicone bristles.

[0017] 2. In the utility model, during the operation, the lubricating oil pump draws out the lubricating oil in the lubricating oil tank through the liquid inlet pipe, and the drawn out lubricating oil enters the interior of the arc-shaped bin through the liquid outlet pipe and the connecting pipe, and drips downward from the bottom of the oil outlet hole, and the dripping lubricating oil just drips on the worm, and the lubricating oil on the worm will continue to fall onto the worm wheel, so that during the operation of the reduction motor, lubricating oil can also be dripped on the worm wheel end, and the lubricating oil can fill the tiny gap between the gear tooth grooves, and the lubricating oil forms a lubricating film between the tooth surfaces. On the one hand, the direct contact between the worm wheel and the worm is reduced, and the friction and wear are effectively reduced. On the other hand, the gears are made to run more smoothly, and there is no need to disassemble the reduction motor to add lubricating oil, which is very convenient.

[0018] 3. In the utility model, when lubricating oil is dripped onto the worm gear, the lubricating oil adheres to the worm gear. When the worm gear rotates, the silicone bristles come into contact with the inclined surface of the tooth of the worm gear. The silicone bristles will brush the lubricating oil on the inclined surface of the tooth, thereby facilitating the lubricating oil to be evenly brushed onto the tooth end surface of the worm gear, so that the lubricating oil can contact the worm gear more fully and evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 The utility model is a schematic diagram of the overall structure of a reduction motor for a valve actuator.

[0021] Figure 2 The utility model is a schematic diagram of the structure of a lubrication component of a reduction motor for a valve actuator.

[0022] Figure 3 The utility model is a schematic diagram of the bottom view of the arc-shaped chamber structure of a reduction motor for a valve actuator.

[0023] Figure 4 The utility model is a schematic diagram of the explosion structure of the oil equalization component of the reduction motor for the valve actuator.

[0024] Figure 5 The utility model is a schematic diagram of the structure of a connecting plate of a reduction motor for a valve actuator.

[0025] Description of reference numerals:

[0026] 1. Fixed plate; 2. Lubricating oil tank; 3. Recovery bin; 4. Support column; 5. Hollow frame; 6. Worm reducer; 7. Servo motor; 8. Lubrication assembly; 81. Outer casing; 82. Liquid outlet pipe; 83. Liquid inlet pipe; 84. Arc bin; 85. Connecting pipe; 86. Oil equalization assembly; 861. Empty box; 862. Movable column; 863. Spring; 864. Connecting plate; 865. Fixed cavity; 866. Iron block; 867. Brush plate; 868. Silicone brush; 869. Magnet; 87. Oil outlet hole; 88. Lubricating oil pump. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] Example 1

[0029] Reference Figure 1-5, which is the first embodiment of the utility model, provides a reduction motor for a valve actuator, and this reduction motor for a valve actuator includes a fixing plate 1, and fixing holes are opened at the four corners of the top of the fixing plate 1, a lubricating oil tank 2 is installed on the top of the fixing plate 1, and lubricating oil is arranged inside the lubricating oil tank 2, a hollow frame 5 is installed on the top of the lubricating oil tank 2, a worm gear reducer 6 is installed in the inner cavity of the hollow frame 5, the worm end of the worm gear reducer 6 is fixedly connected to the driving end of the servo motor 7, and the servo motor 7 is installed on the right side of the hollow frame 5, and a lubrication component 8 is installed on the left side of the hollow frame 5, and the liquid inlet end of the lubrication component 8 is connected to the liquid outlet of the lubricating oil tank 2, and at the same time, the liquid outlet end of the lubrication component 8 is located inside the worm gear reducer 6 and directly above the worm gear;

[0030] The lubrication assembly 8 includes a lubricating oil pump 88 installed on the left side of the hollow frame 5, and an outer protective shell 81 installed on the left side of the hollow frame 5 and covering and protecting the lubricating oil pump 88. The liquid inlet end of the lubricating oil pump 88 is installed with a liquid inlet pipe 83, and the liquid inlet end of the liquid inlet pipe 83 is fixed at the left liquid outlet of the lubricating oil tank 2. The liquid outlet end of the lubricating oil pump 88 is installed with a liquid outlet pipe 82, and the liquid outlet end of the liquid outlet pipe 82 is located on the upper side of the inside of the worm gear reducer 6. The liquid outlet end of the liquid outlet pipe 82 is fixedly connected to an arc-shaped bin 84, and an oil discharge hole 87 is provided on the arc-shaped surface at the bottom of the arc-shaped bin 84.

[0031] The lubricating oil pump 88 draws the lubricating oil from the lubricating oil tank 2 through the liquid inlet pipe 83, and the drawn lubricating oil enters the interior of the arc-shaped bin 84 through the liquid outlet pipe 82 and the connecting pipe 85, and drips downward from the bottom of the oil outlet hole 87, and the dripping lubricating oil just drips on the worm, and the lubricating oil on the worm will continue to fall onto the worm wheel, so that during the operation of the reduction motor, lubricating oil can also be dripped on the worm wheel end, and the lubricating oil can fill the tiny gaps between the gear tooth grooves, and the lubricating oil forms a lubricating film between the tooth surfaces. On the one hand, it reduces the direct contact between the worm wheel and the worm, effectively reducing friction and wear. On the other hand, it makes the gears run more smoothly. In addition, there is no need to disassemble the reduction motor to add lubricating oil, which is very convenient.

[0032] Support columns 4 are welded between the four corners of the top of the lubricating oil tank 2 and the four corners of the bottom of the hollow frame 5. Recovery ports are penetrated and opened directly below the worm gear reducer 6 and the bottom of the hollow frame 5. A recovery bin 3 is welded at the position of the recovery port at the bottom of the hollow frame 5, and the liquid outlet of the recovery bin 3 is fixedly connected to the liquid inlet at the top of the lubricating oil tank 2. The lubricating oil dripping downwards will enter the interior of the recovery bin 3 through the recovery port, and will return to the interior of the lubricating oil tank 2 after being guided by the recovery bin 3, thereby realizing the recovery and utilization of the lubricating oil.

[0033] A connecting pipe 85 is welded at the liquid inlet on the top of the arc-shaped bin 84 , and the liquid inlet end of the connecting pipe 85 is connected to the liquid outlet end of the liquid outlet pipe 82 .

[0034] During use, the servo motor 7 drives the shaft end of the worm gear reducer 6 to rotate. During operation, the lubricating oil pump 88 draws the lubricating oil inside the lubricating oil tank 2 through the liquid inlet pipe 83. The drawn lubricating oil enters the interior of the arc bin 84 through the liquid outlet pipe 82 and the connecting pipe 85, and drips downward from the bottom of the oil outlet hole 87. The dripping lubricating oil just drips on the worm, and the lubricating oil on the worm will continue to fall onto the worm wheel.

[0035] Example 2

[0036] Reference Figure 1-5 , which is the second embodiment of the utility model, and this embodiment is different from the first embodiment in that:

[0037] The lubrication assembly 8 further includes an oil balancing assembly 86 installed on one side of the interior of the worm gear reducer 6 , and the bristle end of the oil balancing assembly 86 is in contact with the tooth surface of the worm gear.

[0038] The oil balancing component 86 includes an empty box 861 installed inside the turbine worm reducer 6, and a connecting plate 864 is provided on the rear side of the empty box 861. A brush plate 867 is detachably installed on the side of the connecting plate 864 away from the empty box 861, and silicone bristles 868 are installed on the side of the brush plate 867 away from the connecting plate 864, and the silicone bristles 868 are in contact with the tooth surface of the worm wheel. When lubricating oil is dripped onto the worm and worm gear, the lubricating oil adheres to the worm gear and worm, and when the worm gear rotates, the silicone bristles 868 will contact the inclined surface of the tooth of the worm gear, and the silicone bristles 868 will brush the lubricating oil on the inclined surface of the tooth, thereby facilitating the lubricating oil to be evenly brushed onto the tooth end surface of the worm wheel, so that the lubricating oil can be more fully and evenly contacted with the worm wheel.

[0039] Sliding holes are provided on both sides of the empty box 861 close to the connecting plate 864, and two T-shaped movable columns 862 are slidably installed on the empty box 861 through the sliding holes. At the same time, the connecting plate 864 is fixed between one end of the two movable columns 862, and a spring 863 is sleeved on the outer wall of the movable column 862. When the silicone bristles 868 are installed, the distance between the connecting plate 864 and the empty box 861 is shortened, and the distance between the connecting plate 864 and the worm gear is expanded, which helps to facilitate the fixing of the bristle plate 867 on the connecting plate 864.

[0040] Fixed cavities 865 are provided on both sides of the connecting plate 864 away from the spring 863, and magnets 869 are installed inside the fixed cavities 865. Iron blocks 866 are installed on both sides of the brush plate 867 away from the silicone bristles 868, and the opposing surfaces of the iron block 866 and the magnet 869 are in a magnetic attraction state. The brush plate 867 is installed by magnetic attraction between the magnet 869 and the iron block 866, which further facilitates the assembly and disassembly of the brush plate 867, and also facilitates the replacement of the silicone bristles 868.

[0041] During use, the installation process of silicone bristle 868 is as follows:

[0042] The handheld connecting plate 864 is pulled in the direction of the empty box 861 to retract the movable column 862 into the interior of the empty box 861. The connecting plate 864 compresses the spring 863 to shorten the distance between the connecting plate 864 and the empty box 861. Then, the iron block 866 on the bristle plate 867 is inserted into the interior of the fixed cavity 865. The iron block 866 contacts and is magnetically attracted to the magnet 869, thereby fixing the bristle plate 867 on the connecting plate 864. Then, the pulling force applied to the connecting plate 864 is released to move the bristle plate 867 toward the direction of the worm gear, so that the silicone bristles 868 are in full contact with the tooth surface of the worm gear.

[0043] The remaining structures are the same as those of Example 1.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A reduction motor for a valve actuator, comprising a fixing plate (1), characterized in that: A lubricating oil tank (2) is installed on the top of the fixed plate (1), a hollow frame (5) is installed on the top of the lubricating oil tank (2), a worm gear reducer (6) is installed in the inner cavity of the hollow frame (5), the worm end of the worm gear reducer (6) is fixedly connected to the driving end of a servo motor (7), and the servo motor (7) is installed on the right side of the hollow frame (5), and a lubricating assembly (8) is installed on the left side of the hollow frame (5), and the liquid inlet end of the lubricating assembly (8) is connected to the liquid outlet of the lubricating oil tank (2), and at the same time, the liquid outlet end of the lubricating assembly (8) is located inside the worm gear reducer (6) and directly above the worm gear; The lubrication assembly (8) comprises a lubricating oil pump (88) installed on the left side of the hollow frame (5), and an outer protective shell (81) installed on the left side of the hollow frame (5) and covering and protecting the lubricating oil pump (88); a liquid inlet pipe (83) is installed at the liquid inlet end of the lubricating oil pump (88), and the liquid inlet end of the liquid inlet pipe (83) is fixed at the left liquid outlet of the lubricating oil tank (2); a liquid outlet pipe (82) is installed at the liquid outlet end of the lubricating oil pump (88), and the liquid outlet end of the liquid outlet pipe (82) is fixedly connected to an arc-shaped bin (84), and an oil discharge hole (87) is provided on the arc-shaped surface at the bottom of the arc-shaped bin (84).

2. A reduction motor for a valve actuator according to claim 1, characterized in that: Support columns (4) are welded between the four corners of the top of the lubricating oil tank (2) and the four corners of the bottom of the hollow frame (5); recovery ports are provided through the worm gear reducer (6) and directly below the bottom of the hollow frame (5); a recovery bin (3) is welded at the location of the recovery port at the bottom of the hollow frame (5); and the liquid outlet of the recovery bin (3) is fixedly connected to the liquid inlet at the top of the lubricating oil tank (2).

3. A reduction motor for a valve actuator according to claim 2, characterized in that: A connecting pipe (85) is welded to the liquid inlet at the top of the arc-shaped bin (84), and the liquid inlet end of the connecting pipe (85) is connected to the liquid outlet end of the liquid outlet pipe (82).

4. A reduction motor for a valve actuator according to claim 3, characterized in that: The lubrication assembly (8) also includes an oil balancing assembly (86) installed on one side of the interior of the worm gear reducer (6), and the bristle end of the oil balancing assembly (86) is in contact with the tooth surface of the worm gear.

5. A reduction motor for a valve actuator according to claim 4, characterized in that: The oil balancing component (86) comprises an empty box (861) installed inside the worm gear reducer (6); a connecting plate (864) is provided on the rear side of the empty box (861); a brush plate (867) is detachably installed on the side of the connecting plate (864) away from the empty box (861); silicone bristles (868) are installed on the side of the brush plate (867) away from the connecting plate (864), and the silicone bristles (868) are in contact with the tooth surface of the worm gear.

6. A reduction motor for a valve actuator according to claim 5, characterized in that: Sliding holes are provided on both sides of the empty box (861) close to the connecting plate (864), and two T-shaped movable columns (862) are slidably mounted on the empty box (861) through the sliding holes, and springs (863) are sleeved on the outer wall surfaces of the movable columns (862).

7. A reduction motor for a valve actuator according to claim 6, characterized in that: The connecting plate (864) is provided with a fixing cavity (865) on both sides of a side away from the spring (863), and a magnet (869) is installed inside the fixing cavity (865). The bristle plate (867) is provided with an iron block (866) on both sides of a side away from the silicone bristles (868), and the opposing surfaces of the iron block (866) and the magnet (869) are in a magnetic attraction state.

Images