Air-defense wear-resistant structure of valve transmission shaft system

Abstract

The utility model discloses a valve transmission shaft system air-defense wear-resisting structure, which relates to the technical field of valve transmission shaft systems, and comprises a driving shaft and a lubricating component, the end part of the driving shaft is connected with a worm, one side of the worm is meshed with a worm gear, a valve rod is fixed in the worm gear, and the outer side of the lower end of the valve rod is rotatably connected with a shell; the lubricating assembly is arranged on one side of the middle of the valve rod. According to the air-defense wear-resistant structure of the valve transmission shaft system, through the arrangement of the lubricating assembly, in the using process of the valve transmission shaft system, the top cover is opened firstly, a certain amount of lubricating oil is added into the shell, in the subsequent using process, the oil can lubricate the portion between the worm and the worm wheel, abrasion is reduced, and meanwhile in the rotating process of the valve rod, the valve rod is prevented from being damaged. At the moment, the spring can push the piston plate to enable the ejector rod to be attached to the cam all the time, and therefore the piston plate can move left and right in the cam rotating process.

Description

Technical Field

[0001] The utility model relates to the technical field of valve transmission shaft systems, in particular to an air-proof and wear-resistant structure of a valve transmission shaft system. Background Art

[0002] The valve transmission shaft system refers to the mechanical part used to control the opening and closing action of the valve during valve operation. It includes a series of mechanical components, such as handwheels, gears, chains, sprocket wheels, worm gears, motors, pneumatic actuators, hydraulic actuators, etc. These components are connected in different ways to form a complete transmission system, allowing operators to control the opening and closing of the valve. In the long-term operation of the valve transmission shaft system, due to factors such as medium erosion, corrosion, and self-movement wear, or reduced sealing leading to the entry of impurities carried by air, it will affect the normal operation and service life of the equipment. Therefore, it is very important to design a reasonable air-proof and wear-resistant structure.

[0003] For example, the utility model with application number CN202022586782.5 discloses a worm gear reduction structure for a valve with signal feedback. The utility model uses a worm gear reduction structure, and aims at large-diameter valves with an inner diameter greater than 250 mm. By setting a worm gear structure, the difficulty of opening and closing the valve for the operator is reduced. However, in the actual use of such valves, due to the large wear of the worm gear transmission, manual inspection and maintenance are required on a regular basis, which increases the overall cost.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and an air-proof and wear-resistant structure of the valve transmission shaft system is provided. Utility Model Content

[0005] The utility model aims to provide an air-proof and wear-resistant structure for a valve transmission shaft system to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a valve transmission shaft system air-proof and wear-resistant structure, comprising a driving shaft and a lubrication assembly, wherein a worm is connected to the end of the driving shaft, and a worm wheel is meshed on one side of the worm, a valve stem is fixed inside the worm wheel, and a housing is rotatably connected to the outer side of the lower end of the valve stem, and the lubrication assembly is arranged on one side of the middle part of the valve stem, and the lubrication assembly comprises a cam, a push rod, a piston plate, a spring, a fixed cylinder, a one-way valve 1, a suction pipe, a filter plate, a one-way valve 2, a connecting pipe and a nozzle, a push rod is slidably connected to one side of the cam, and a piston plate is fixed to one end of the push rod, a spring is arranged on one side of the piston plate, and a fixed cylinder is arranged on the outer side of the spring, a one-way valve 1 is arranged on one side of the fixed cylinder, and a suction pipe is connected to one side of the one-way valve 1, a filter plate is slidably connected to the inside of the housing, a one-way valve 2 is arranged on the other side of the fixed cylinder, and a connecting pipe is arranged at one end of the one-way valve 2, and a nozzle is arranged at the upper bottom end of the connecting pipe.

[0007] Furthermore, the cam is fixedly connected to the valve stem, and the cam is rhombus-shaped.

[0008] Furthermore, the fixing cylinder is fixedly connected to the housing, and the fixing cylinder is slidably connected to the piston plate.

[0009] Furthermore, the push rod is slidably connected to the shell, and the interior of the shell is connected to the interior of the straw.

[0010] Furthermore, a sealing strip is provided on the top of the shell, and a top cover is placed on the top of the sealing strip.

[0011] Furthermore, a sealing component 1 is provided on the outer side of the middle portion of the driving shaft, and the sealing component 1 includes a fixing ring and a sealing ring. A fixing ring is provided on the outer side of the middle portion of the driving shaft, and a sealing ring is connected to one side of the fixing ring.

[0012] Furthermore, the sealing assembly 1 also includes a sealing plate and bolts, the other side of the fixing ring is connected to the sealing plate, and the outer end of the sealing plate is internally provided with bolts.

[0013] Furthermore, a sealing component 2 is arranged on the outer side of the middle part of the valve stem, and the structure of the sealing component 2 is substantially consistent with the structure of the sealing component 1.

[0014] The utility model provides an air-proof and wear-resistant structure for a valve transmission shaft system, which has the following beneficial effects:

[0015] 1. The utility model sets a lubricating component. When using the valve transmission shaft system, the top cover is first opened and a certain amount of lubricating oil is added into the housing. In the subsequent use, the oil will lubricate the worm and the worm wheel to reduce wear. At the same time, the cam will be driven to rotate during the rotation of the valve stem. At this time, the spring will push the piston plate so that the push rod is always in contact with the cam, so that the piston plate can move left and right during the rotation of the cam. When the piston plate moves to the right, the oil inside the housing will enter the fixed cylinder through the suction pipe and the one-way valve. When the piston plate moves to the left, the oil will be sprayed from the nozzle to the worm through the one-way valve and the connecting pipe, so that the worm can be lubricated when the oil level is lowered. At the same time, during the process of oil suction by the suction pipe, the filter plate can be used to filter impurities in the oil to avoid aggravating the wear of the worm wheel and the worm due to the presence of worn particles in the oil.

[0016] 2. The utility model arranges sealing component 1 and sealing component 2. During installation, bolts and sealing plates can be used to limit one side of the fixing ring so that it presses the sealing ring on the side of the shell. The sealing ring can be used to improve the sealing performance between the fixing ring and the shell to prevent air from entering from the connection between the drive shaft and the shell. Similarly, sealing component 2 can be used to enhance the sealing performance between the valve stem and the shell to avoid leakage. At the same time, the sealing strip can also be used to seal the top cover and the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the external structure of the housing of the air-proof and wear-resistant structure of the valve transmission shaft system of the utility model;

[0018] Figure 2 It is a three-dimensional structural diagram of the sealing plate of the air-proof and wear-resistant structure of the valve transmission shaft system of the utility model;

[0019] Figure 3 The utility model is a schematic diagram of the internal cross-sectional structure of the fixed cylinder of the air-proof and wear-resistant structure of the valve transmission shaft system.

[0020] In the figure: 1. drive shaft; 2. worm; 3. worm wheel; 4. valve stem; 5. housing; 6. sealing strip; 7. top cover; 8. lubrication assembly; 801. cam; 802. push rod; 803. piston plate; 804. spring; 805. fixing cylinder; 806. one-way valve 1; 807. suction pipe; 808. filter plate; 809. one-way valve 2; 810. connecting pipe; 811. nozzle; 9. sealing assembly 1; 901. fixing ring; 902. sealing ring; 903. sealing plate; 904. bolt; 10. sealing assembly 2. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] like Figures 1 to 3 As shown, the valve transmission shaft system has an air-proof and wear-resistant structure, including a driving shaft 1 and a lubrication assembly 8. A worm 2 is connected to the end of the driving shaft 1, and a worm wheel 3 is meshed on one side of the worm 2. A valve stem 4 is fixed inside the worm wheel 3, and a housing 5 is rotatably connected to the outer side of the lower end of the valve stem 4. A sealing strip 6 is provided on the top of the housing 5, and a top cover 7 is placed on the top of the sealing strip 6. The sealing strip 6 is used to seal the top cover 7 and the housing 5. The lubrication assembly 8 is arranged on one side of the middle of the valve stem 4. The lubrication assembly 8 includes a cam 801, a push rod 802, a piston plate 803, a spring 804, a fixing cylinder 805, One-way valve 806, suction pipe 807, filter plate 808, one-way valve 809, connecting pipe 810 and nozzle 811, one side of cam 801 is slidably connected with push rod 802, and one end of push rod 802 is fixed with piston plate 803, cam 801 is fixedly connected with valve stem 4, and cam 801 is diamond-shaped, and during the rotation of valve stem 4, cam 801 is also driven to rotate, one side of piston plate 803 is provided with spring 804, and the outer side of spring 804 is provided with fixed cylinder 805, fixed cylinder 805 is fixedly connected with housing 5, and fixed cylinder 805 is slidably connected with piston plate 803 , the spring 804 will push the piston plate 803 so that the push rod 802 is always in contact with the cam 801, a one-way valve 806 is arranged on one side of the fixed cylinder 805, and a suction pipe 807 is connected to one side of the one-way valve 806, the push rod 802 is slidably connected to the shell 5, and the interior of the shell 5 is connected to the interior of the suction pipe 807. When the cam 801 rotates, the piston plate 803 moves left and right, and when the piston plate 803 moves right, the oil inside the shell 5 enters the fixed cylinder 805 through the suction pipe 807 and the one-way valve 806, and the interior of the shell 5 is slidably connected to the filter plate 808. A one-way valve 809 is arranged on the other side of the fixed cylinder 805, and a connecting pipe 810 is arranged at one end of the one-way valve 809, and a nozzle 811 is arranged at the upper bottom end of the connecting pipe 810. When the piston plate 803 moves to the left, the oil will pass through the one-way valve 809 and the connecting pipe 810 and spray from the nozzle 811 to the worm 2, and the oil will lubricate the worm 2 and the worm wheel 3 to reduce wear. At the same time, during the process of oil suction by the suction pipe 807, the filter plate 808 can be used to filter impurities in the oil to avoid aggravating the wear of the worm wheel 3 and the worm 2 due to the presence of worn particles in the oil.

[0023] like Figure 2As shown, a sealing component 9 is provided on the outer side of the middle part of the driving shaft 1, and the sealing component 9 includes a fixing ring 901 and a sealing ring 902. A fixing ring 901 is provided on the outer side of the middle part of the driving shaft 1, and a sealing ring 902 is connected to one side of the fixing ring 901, and the sealing ring 902 is used to improve the sealing performance between the fixing ring 901 and the housing 5 to prevent air from entering from the connection between the driving shaft 1 and the housing 5. The sealing component 9 also includes a sealing plate 903 and a bolt 904. A sealing plate 903 is connected to the other side of the fixing ring 901, and a bolt 904 is arranged inside the outer end of the sealing plate 903. The bolt 904 and the sealing plate 903 are used to limit one side of the fixing ring 901 so that it presses the sealing ring 902 on the side of the housing 5. A sealing component 2 10 is provided on the outer side of the middle part of the valve stem 4, and the structure of the sealing component 2 10 is substantially consistent with that of the sealing component 9. Similarly, the sealing component 2 10 is used to enhance the sealing performance between the valve stem 4 and the housing 5 to avoid leakage.

[0024] In summary, the valve transmission shaft system has an air-proof and wear-resistant structure. When using it, first follow the Figure 1 , Figure 2 and Figure 3 In the structure shown in , when using the valve transmission shaft system, first open the top cover 7 and add a certain amount of lubricating oil into the shell 5. Secondly, after closing the top cover 7, the sealing strip 6 can be used to seal the top cover 7 and the shell 5. At the same time, the bolt 904 and the sealing plate 903 are used to limit one side of the fixing ring 901 so that it presses the sealing ring 902 on the side of the shell 5. The sealing ring 902 can be used to improve the sealing performance between the fixing ring 901 and the shell 5. Similarly, the sealing component 10 can also be used to enhance the sealing performance between the valve stem 4 and the shell 5. Then, when the drive shaft 1 is controlled to rotate by the hand wheel, the valve stem 4 is driven to rotate through the worm 2 and the worm wheel 3 to control the opening and closing of the valve plate below. During this process, the valve stem 4 will drive the cam 801 to rotate. At this time, the spring 804 will push the piston plate 803 so that the push rod 802 is always in contact with the cam 801, so that the piston plate 803 can move left and right during the rotation of the cam 801. Then, when the piston plate 803 moves to the right, the oil inside the housing 5 will enter the fixed cylinder 805 through the suction pipe 807 and the one-way valve 806. During this process, the filter plate 808 is used to filter impurities in the oil. Finally, when the piston plate 803 moves to the left, the oil will pass through the one-way valve 809 and the connecting pipe 810 from the nozzle 811 to the worm 2. The oil will lubricate the worm 2 and the worm wheel 3, making the overall mechanism more wear-resistant.

[0025] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A valve transmission shaft system air-proof and wear-resistant structure, comprising a drive shaft (1) and a lubrication assembly (8), characterized in that: The end of the drive shaft (1) is connected to a worm (2), and one side of the worm (2) is meshed with a worm wheel (3), a valve stem (4) is fixed inside the worm wheel (3), and the outer side of the lower end of the valve stem (4) is rotatably connected to a housing (5), the lubrication assembly (8) is arranged on one side of the middle part of the valve stem (4), and the lubrication assembly (8) comprises a cam (801), a push rod (802), a piston plate (803), a spring (804), a fixed cylinder (805), a one-way valve (806), a suction pipe (807), a filter plate (808), a one-way valve (809), a connecting pipe (810) and a nozzle (811), and one side of the cam (801) is slidably connected to a push rod (802), and a piston plate (803) is fixed to one end of the push rod (802), a spring (804) is arranged on one side of the piston plate (803), and a fixed cylinder (805) is arranged on the outer side of the spring (804), a one-way valve (806) is arranged on one side of the fixed cylinder (805), and a suction tube (807) is connected to one side of the one-way valve (806), a filter plate (808) is slidably connected to the inside of the shell (5), a one-way valve (809) is arranged on the other side of the fixed cylinder (805), and a connecting pipe (810) is arranged at one end of the one-way valve (809), and a nozzle (811) is arranged at the upper bottom end of the connecting pipe (810).

2. The valve transmission shaft system air-proof and wear-resistant structure according to claim 1 is characterized in that: The cam (801) is fixedly connected to the valve stem (4), and the cam (801) is in a rhombus shape.

3. The valve transmission shaft system air-proof and wear-resistant structure according to claim 1 is characterized in that: The fixed cylinder (805) is fixedly connected to the housing (5), and the fixed cylinder (805) is slidably connected to the piston plate (803).

4. The valve transmission shaft system air-proof and wear-resistant structure according to claim 1, characterized in that: The push rod (802) is slidably connected to the shell (5), and the interior of the shell (5) is connected to the interior of the suction tube (807).

5. The valve transmission shaft system air-proof and wear-resistant structure according to claim 1, characterized in that: A sealing strip (6) is provided on the top of the housing (5), and a top cover (7) is placed on the top of the sealing strip (6).

6. The valve transmission shaft system air-proof and wear-resistant structure according to claim 1, characterized in that: A sealing assembly (9) is provided on the outer side of the middle portion of the drive shaft (1), and the sealing assembly (9) comprises a fixing ring (901) and a sealing ring (902). A fixing ring (901) is provided on the outer side of the middle portion of the drive shaft (1), and a sealing ring (902) is connected to one side of the fixing ring (901).

7. The valve transmission shaft system air-proof and wear-resistant structure according to claim 6, characterized in that: The sealing assembly (9) further comprises a sealing plate (903) and bolts (904); the other side of the fixing ring (901) is connected to the sealing plate (903), and the outer end of the sealing plate (903) is internally provided with bolts (904).

8. The valve transmission shaft system air-proof and wear-resistant structure according to claim 7 is characterized in that: A sealing component 2 (10) is arranged on the outer side of the middle part of the valve stem (4), and the structure of the sealing component 2 (10) is substantially consistent with the structure of the sealing component 1 (9).

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