Intelligent gas quick-closing valve

Abstract

The present invention relates to an intelligent gas quick-closing valve, which is designed to solve the technical problems of the existing similar products, such as large volume, inconvenient production and assembly, poor stability and high power consumption. A valve sealing assembly is arranged in the valve body of the quick-closing valve, and the valve sealing assembly is meshed with the gear column through the drive shaft, the shaft core, and the gear of the gear assembly in the reduction assembly, and the drive shaft and the shaft core are driven by the motor and the reduction assembly to move upward to seal the air inlet of the valve body; the key points are that one end of the drive shaft is connected to the valve sealing assembly in the valve body, one end of the shaft core is inserted into the drive shaft, and the outer diameter of the other end of the shaft core extending out of the drive shaft is provided with a spring, and this end of the shaft core is fixed to the motor box, the center of the output tooth in the reduction assembly is fixed to the reduction inner bracket, the spring is arranged in the reduction gear cavity where the reduction gear cover and the reduction inner bracket are buckled, the cylinder of the output tooth is inserted into the guide wheel groove of the drive shaft, and the tooth opening on the other side of the edge of the output tooth is meshed with the gear of the gear assembly in the reduction assembly.

Description

Technical Field

[0001] The invention relates to a motor valve, which is an intelligent gas quick-closing valve. Background Art

[0002] Motor valve, also known as electric valve, can not only control the opening and closing of the valve, but also adjust the size of the valve opening and closing amount. The electric valve is generally driven by a motor. It takes a certain amount of time to complete the opening or closing action. It can be adjusted. It is relatively resistant to voltage shock. The states are open, closed, half-open, and half-closed. It can control the flow of the medium in the pipeline. Some electric valves also have opening and closing amounts. For example, the application number 201710803869.3 disclosed in the Chinese patent literature, the authorization announcement date is 2017.11.14, and the utility model name is "a smart gas meter built-in fast-closing motor valve"; for example, the application number 201922183760.1 disclosed in the Chinese patent literature, the authorization announcement date is 2020.10.30, and the utility model name is "a smart gas meter instant closing motor valve". However, the existing motor valve technology has problems such as large size and high power consumption. The main reason is caused by the installation method of the deceleration. Usually, the deceleration is assembled in the forward direction with the screw rod, so the axial height is greatly increased, and the space in the gas meter is originally very small, which will cause the problem of not being able to be installed in the gas meter. Meanwhile, the valve port seal of the existing motor valve is wrapped on the sealing bracket. When there is air pressure at the air inlet after the valve is closed, it is easy to push open the valve port seal, so the power consumption is large. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide an intelligent gas quick-closing valve to the art, so as to solve the technical problems of existing similar products, such as large volume, inconvenient production and assembly, poor stability, and high power consumption. The purpose is achieved through the following technical solutions.

[0004] A smart gas quick-closing valve, a valve sealing assembly is provided in the valve body of the quick-closing valve, an air outlet is provided at the top of the sealing cavity at the valve seal of the valve sealing assembly in the valve body, an air inlet is provided on one side of the sealing cavity of the valve body, the valve sealing assembly is meshed with the gear column through the drive shaft, the shaft core, and the gear of the gear assembly in the reduction assembly, and the drive shaft and the shaft core are driven by the motor and the reduction assembly to move upward to seal the air inlet of the valve body, the gear column is connected to the gear sleeve of the motor, the motor is arranged in the motor box, the outlet end of the motor box is provided with an outlet plug, and the motor is connected to the controller through the outlet plug. The key points of its structural design are that one end of the drive shaft is connected to the valve sealing assembly in the valve body, one end of the shaft core is inserted into the drive shaft, and a spring is provided on the outer diameter of the other end of the shaft core extending out of the drive shaft, and this end of the shaft core is fixed to the motor box, the center of the output tooth in the reduction assembly is fixed to the reduction inner bracket, the spring is arranged in the reduction gear cavity where the reduction gear cover and the reduction inner bracket are buckled, and the spring is against the shaft hole at the other end of the drive shaft; a guide wheel groove is provided on one side of the spring end of the drive shaft, and a raised cylinder is provided on one side of the edge of the output tooth, the cylinder of the output tooth is inserted into the guide wheel groove of the drive shaft, and the tooth opening on the other side of the edge of the output tooth is meshed with the gear of the gear assembly in the reduction assembly. Therefore, the reduction assembly of the quick-closing valve is reversely meshed with the drive shaft through the output teeth, and the reduction assembly and the valve body are installed in reverse; a motor and a reduction assembly are arranged in the reduction box cavity, and the motor drives the reduction assembly to realize the opening and closing of the valve body; the output teeth drive the drive shaft to rotate the valve mouth bracket of the valve sealing assembly to seal, and the spring supports the valve mouth bracket to prevent loosening; the quick-closing valve mainly solves the problem that existing similar products increase the reduction torque to overcome air leakage.

[0005] A clutch assembly is provided in the reduction gear cavity, and the clutch assembly includes a ratchet, a pawl and a clutch frame. The output tooth is fixed to the reduction inner bracket by a first locating pin. A ratchet is provided at one end of the ratchet, and a tooth opening larger than the diameter of the ratchet is provided at the other end of the ratchet. One end of the pawl is V-shaped, and a spring sheet extending outward is provided on one side of the V-shaped end of the pawl, and a raised pointed head is provided on the other side of the V-shaped end of the pawl. The other end of the pawl is fixed to one end of the clutch frame for swinging and is provided with a raised locking block. The pointed head of the pawl abuts against the ratchet teeth of the ratchet wheel for locking, and the tooth opening of the ratchet wheel meshes with the gear and the tooth opening of the output tooth of the gear assembly in the reduction assembly. The spring sheet of the pawl abuts against the limit column of the reduction inner bracket on the other side of the symmetrical pointed head, and the through hole at the other end of the clutch frame is arranged at the outer diameter of the gear column.

[0006] The clutch assembly is located at one side of the top opening of the reduction gear cover, and a cover buckle on one side of the reduction gear cover is buckled and fixed with a limit block on one side of the reduction inner bracket.

[0007] The frame buckle on the other side of the deceleration inner bracket is buckled and fixed with the outer diameter groove of the motor in the motor box, and the cover buckle of the motor cover is buckled and fixed with the box buckle of the outer diameter of the motor box. Thus, the valve body adopts a full buckle structure, and each part is fastened in place by a bow buckle and a hook buckle.

[0008] The center of the output tooth in the reduction assembly is fixed to the reduction inner bracket through a first locating pin, and one end of the spring of the shaft core is fixed to the motor box through a second locating pin. The circular transmission device includes an output tooth, a shaft core, a drive shaft and a second locating pin.

[0009] The center of the output tooth in the reduction assembly is fixed to the reduction inner bracket through a first positioning pin, and one end of the spring of the shaft core is fixed to the motor box through a second positioning pin.

[0010] The internal gear assembly of the reduction assembly includes output teeth, a ratchet, a pawl, a clutch frame, a reduction inner bracket, a gear column, a first gear shaft, a first duplex gear, a second gear shaft, a second duplex gear, a third gear shaft, a third duplex gear and a reduction gear cover. The first duplex gear, the second duplex gear and the third duplex gear are respectively fixed by the first gear shaft, the second gear shaft and the third gear shaft. The large and small gears of the first duplex gear, the second duplex gear and the third duplex gear are respectively meshed with each other and then meshed with the teeth of the ratchet and the gear column.

[0011] The valve sealing assembly includes a valve port seal, a valve port bracket and a drive shaft. The valve port seal is back-pressure mounted on the valve port bracket. The outer diameter of the valve port bracket is wrapped with the valve port seal. The valve port bracket and the valve port seal are arranged in a sealing cavity between the valve body and the cover plate. The valve port bracket is fixed to one end of the drive shaft.

[0012] A cover plate sealing gasket is provided at the connection between the motor box and the cover plate where the driving shaft of the motor box extends out, and the buckle groove of the cover plate is buckled with the valve buckle of the valve body.

[0013] A switch assembly is fixedly arranged on one side of the motor cover of the outer diameter of the reduction gear cover, and the switch plug of the switch assembly plugs the plug hole on one side of the switch body. The control line of the switch assembly passes through the switch plug and comes out from the outlet hole of the motor cover. The switch body is provided with a moving spring and a fixed spring, and the moving spring contacts the outer diameter of the driving shaft. The switch assembly is used to detect the opening and closing of the quick closing valve.

[0014] The invention has reasonable structural design, is convenient to use, install and produce, has large and stable torque, occupies a small volume and has simple wiring; it is suitable for use as an intelligent gas quick-closing valve in a gas meter, and is a structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the exploded structure of the present invention, in which the clutch assembly is framed and enlarged.

[0016] Figure 2 It is a schematic cross-sectional structural diagram of the present invention, in which the clutch assembly is framed and enlarged.

[0017] Figure 3 yes Figure 2 Schematic diagram of the top view structure.

[0018] Figure 4 It is a schematic diagram of the structure of the speed reduction inner bracket in the motor box of the present invention.

[0019] Figure 5 It is a schematic diagram of the top view of the deceleration assembly position of the present invention.

[0020] Figure 6 yes Figure 5 Schematic diagram of the three-dimensional structure.

[0021] Figure 7 yes Figure 1 Schematic diagram of the improved explosion structure.

[0022] Figure 8 yes Figure 7 Schematic diagram of further explosion structure at the middle switch assembly.

[0023] Serial number and name of the attached drawings: 1. Valve body, 101. Mounting ear, 2. Valve port seal, 3. Valve port bracket, 4. Cover plate, 5. Cover plate seal, 6. Drive shaft, 601. Guide wheel groove, 7. Shaft core, 8. Output tooth, 9. First positioning pin, 10. Ratchet, 11. Ratchet pawl, 12. Clutch frame, 13. Speed ​​reduction inner bracket, 1301. Frame buckle, 1302. Limit block, 14. Motor, 15. Motor box, 1501. Box buckle , 16. Wire outlet plug, 17. Gear column, 18. First gear shaft, 19. First double gear, 20. Second gear shaft, 21. Second double gear, 22. Third gear shaft, 23. Third double gear, 24. Spring, 25. Second locating pin, 26. Reduction gear cover, 27. Motor cover, 2701, Cover buckle, 28. Air outlet, 29. Air inlet, 30. Switch body, 31. Switch plug, 32. Plug hole. DETAILED DESCRIPTION

[0024] Now, the structure and use of the present invention will be further described in conjunction with the accompanying drawings. Figure 1-Figure 6As shown, a valve sealing assembly is provided in the valve body 1 of the quick-closing valve, an air outlet 28 is provided at the top of the sealing cavity at the valve seal of the valve sealing assembly in the valve body, an air inlet 29 is provided on one side of the sealing cavity of the valve body, the valve sealing assembly is meshed with the gear column 17 through the drive shaft 6, the shaft core 7, and the gear of the gear assembly in the reduction assembly, and the drive shaft and the shaft core are driven by the motor and the reduction assembly to move upward to seal the air inlet of the valve body, the gear column is connected to the gear sleeve of the motor 14, the motor is arranged in the motor box 15, the outlet end of the motor box is provided with an outlet plug 16, and the motor is connected to the controller through the outlet plug. Its specific structure is as follows: one end of the drive shaft is connected to the valve seal assembly in the valve body, one end of the shaft core is inserted into the drive shaft, and the outer diameter of the other end of the shaft core extending out of the drive shaft is provided with a spring 24, and this end of the shaft core is fixed to the motor box 15 through the second positioning pin 25, and the center of the output tooth 8 in the reduction assembly is fixed to the reduction inner bracket 13 through the first positioning pin 9, and the spring is arranged in the reduction gear cavity where the reduction gear cover 26 and the reduction inner bracket are buckled, and the spring is against the shaft hole at the other end of the drive shaft; a guide wheel groove 601 is provided on one side of the spring end of the drive shaft, and the edge of the output tooth A raised cylinder is provided on one side, and the cylinder of the output tooth is inserted into the guide wheel groove of the drive shaft. The tooth mouth on the other side of the edge of the output tooth is meshed with the gear of the gear assembly in the reduction assembly. The output tooth is a half tooth. The circular transmission device includes an output tooth, a shaft core, a drive shaft and a second locating pin; the valve sealing assembly includes a valve port seal 2, a valve port bracket 3 and a drive shaft. The valve port seal is back-pressure mounted on the valve port bracket. The outer diameter of the valve port bracket is wrapped with a valve port seal. The valve port bracket and the valve port seal are arranged in a sealing cavity between the valve body and the cover plate 4, and the valve port bracket is fixed to one end of the drive shaft.

[0025] The above-mentioned reduction gear cavity is provided with a clutch assembly, which includes a ratchet 10, a pawl 11 and a clutch frame 12. The output teeth are fixed to the reduction inner bracket through a first positioning pin. A ratchet is provided at one end of the ratchet, and a tooth opening larger than the diameter of the ratchet is provided at the other end of the ratchet. One end of the pawl is V-shaped, and a spring sheet extending outward is provided on one side of the V-shaped end of the pawl. A protruding tip is provided on the other side of the V-shaped end of the pawl. The other end of the pawl is fixed to one end of the clutch frame for swinging and is provided with a protruding locking block. The tip of the pawl is locked against the ratchet teeth of the ratchet, and the tooth opening of the ratchet is meshed with the gear and the tooth opening of the output teeth of the gear assembly in the reduction assembly. The spring sheet of the pawl is locked against the limit column of the reduction inner bracket on the other side of the symmetric tip, and the through hole at the other end of the clutch frame is set at the outer diameter of the gear column. The clutch assembly is located on the top opening side of the reduction gear cover 26, and the cover buckle of one side of the reduction gear cover is buckled and fixed with the limit block 1302 on one side of the reduction inner bracket. The frame buckle 1301 on the other side of the speed reduction inner bracket is buckled and fixed with the outer diameter groove of the motor in the motor box, and the cover buckle 2701 of the motor cover is buckled and fixed with the box buckle 1501 on the outer diameter of the motor box.

[0026] The gear assembly inside the reduction assembly includes an output tooth, a ratchet, a pawl, a clutch frame, a reduction inner bracket, a gear column, and a first gear shaft 18, a first double gear 19, a second gear shaft 20, a second double gear 21, a third gear shaft 22, a third double gear 23 and a reduction gear cover. The first double gear, the second double gear and the third double gear are fixed by the first gear shaft, the second gear shaft and the third gear shaft respectively. The large and small gears of the first double gear, the second double gear and the third double gear are respectively meshed with each other and then meshed with the teeth of the ratchet and the gear column. A cover plate sealing gasket 5 is provided at the connection between the motor box and the cover plate where the drive shaft of the motor box extends, and the buckle groove of the cover plate is buckled with the valve clip of the valve body.

[0027] The quick-closing valve is composed of a valve body, a valve port sealing assembly, a cover plate assembly, a circular transmission device, a motor cover, a reduction assembly, a clutch assembly, a motor, and a reduction box. The quick-closing valve rotates the reduction assembly 180 degrees and then cooperates with the drive shaft through the output gear, which saves a lot of space in the axial height. At the same time, for the convenience of assembly, the valve seal is embedded in the valve body. This structure is exactly the opposite of the structure of existing similar products. Therefore, when the valve is closed, the sealing performance is better when the air inlet pressure is high, because the valve port seal is back-pressed onto the valve port bracket. When there is pressure, the air pressure will force the valve port seal to deform and fit tightly with the valve port bracket, so that it is not easy to leak and the deceleration torque can also be reduced, thereby saving power consumption.

[0028] The working principle of the quick-closing valve is as follows: when the output teeth rotate clockwise, the cylinder on the output teeth drives the guide wheel groove under the drive shaft core to move upward, overcoming the spring torque to open the valve; after opening, since the output teeth are half-teeth, the gear above the ratchet engages with the last tooth on the output teeth to achieve the slipping function and prevent the gear from being damaged. When the valve is opened, the deceleration component drives the clutch component, and the clutch component drives the circular transmission device to rotate the valve port bracket upward to achieve the valve opening function. When the valve is closed, the deceleration component drives the clutch component, and the clutch component drives the circular transmission device to rotate the valve port bracket downward to achieve the valve closing function.

[0029] According to the above structural characteristics, such as Figure 7 and Figure 8 As shown, a switch assembly can also be fixedly provided on one side of the motor cover of the outer diameter of the reduction gear cover, the switch plug 31 of the switch assembly plugs the plug hole 32 on one side of the switch body 30, the control line of the switch assembly passes through the switch plug and comes out from the outlet hole of the motor cover, the switch body is provided with a moving reed and a fixed reed, the moving reed is in contact with the outer diameter of the drive shaft, so that the opening and closing of the quick closing valve are detected through the switch assembly.

[0030] The highlights of this quick-closing valve are as follows: 1. There is a clutch assembly in the reduction box: a. The clutch assembly is located below the No. 3 gear; b. The pawl, ratchet and clutch frame form a clutch assembly; c. The pawl is tightly matched with the ratchet by plastic deformation springs. In the old technology, existing products generally use torsion springs to achieve this function; d. When the No. 3 gear rotates clockwise, the pawl and ratchet slide against each other, and the gear above the ratchet is closely meshed with the output teeth for transmission; e. When the No. 3 gear rotates counterclockwise, the clutch assembly leaves the output teeth, and when the locking block of the pawl hits the limit block, the ratchet starts to idle to prevent the gear from being damaged; f. After the clutch assembly drives the ratchet to disengage the output teeth, the spring on the drive shaft pushes the drive shaft and the valve port sealing assembly to quickly close the valve. 2. The valve sealing assembly consists of a valve port seal, a valve port bracket and a drive shaft. 3. The circular transmission device consists of an output tooth, a shaft core, a drive shaft and a second positioning pin.

Claims

1. An intelligent gas quick-closing valve, wherein a valve sealing assembly is provided in a valve body (1) of the quick-closing valve, an air outlet (28) is provided at the top of the sealing cavity of the valve sealing member of the valve sealing assembly in the valve body, an air inlet (29) is provided on one side of the sealing cavity of the valve body, the valve sealing assembly is meshed with a gear column (17) through a drive shaft (6), a shaft core (7), and a gear of a gear assembly in a reduction assembly, and the drive shaft and the shaft core are driven by a motor and a reduction assembly to move upward to seal the air inlet of the valve body, the gear column is connected to a gear sleeve of a motor (14), the motor is arranged in a motor box (15), an outlet plug (16) is provided at the outlet end of the motor box, and the motor is connected to a controller through the outlet plug; characterized in that One end of the driving shaft (6) is connected to the valve seal assembly in the valve body (1), one end of the shaft core (7) is inserted into the driving shaft, and the outer diameter of the other end of the shaft core extending out of the driving shaft is provided with a spring (24), and the end of the shaft core is fixed to the motor box (15), and the center of the output tooth (8) in the reduction assembly is fixed to the reduction inner bracket (13), and the spring is arranged in the reduction gear cavity where the reduction gear cover (26) and the reduction inner bracket are buckled, and the spring is against the shaft hole at the other end of the driving shaft; a guide wheel groove (601) is provided on one side of the spring end of the driving shaft, and a protruding cylinder is provided on one side of the edge of the output tooth, and the cylinder of the output tooth is inserted into the guide wheel groove of the driving shaft, and the tooth opening on the other side of the edge of the output tooth is meshed with the gear of the gear assembly in the reduction assembly, and the output tooth is a half tooth; A clutch assembly is provided in the reduction gear cavity, the clutch assembly comprises a ratchet (10), a pawl (11) and a clutch frame (12); an output tooth (8) in the reduction assembly is fixed to the reduction inner frame (13) through a first positioning pin (9); a ratchet tooth is provided at one end of the ratchet wheel, and a tooth opening larger than the diameter of the ratchet wheel is provided at the other end of the ratchet wheel; one end of the pawl is V-shaped, and a spring sheet extending outward is provided on one side of the V-shaped end of the pawl, and a protruding pointed head is provided on the other side of the V-shaped end of the pawl; the other end of the pawl is fixed to one end of the clutch frame for swinging and is provided with a protruding locking block; the pointed head of the pawl abuts against the ratchet tooth of the ratchet wheel for locking; the tooth opening of the ratchet wheel meshes with the gear of the gear assembly in the reduction assembly and the tooth opening of the output tooth (8) in the reduction assembly; the spring sheet of the pawl abuts against the limit column of the reduction inner frame on the other side of the pointed head; and a through hole at the other end of the clutch frame is provided at the outer diameter of the gear column (17); The gear assembly inside the reduction assembly comprises an output tooth (8) inside the reduction assembly, a ratchet (10), a ratchet pawl (11), a clutch frame (12), a reduction inner bracket (13), a gear column (17), a first gear shaft (18), a first double gear (19), a second gear shaft (20), a second double gear (21), a third gear shaft (22), a third double gear (23) and a reduction gear cover (26); the first double gear, the second double gear and the third double gear are fixed by the first gear shaft, the second gear shaft and the third gear shaft respectively; the large and small gears of the first double gear, the second double gear and the third double gear are respectively meshed with each other and then meshed with the tooth opening of the ratchet (10) and the gear column (17).

2. The intelligent gas quick-closing valve according to claim 1 is characterized in that: The clutch assembly is located on one side of the top opening of the reduction gear cover (26), and a cover buckle on one side of the reduction gear cover is buckled and fixed to a limit block (1302) on one side of the reduction inner bracket (13).

3. The intelligent gas quick-closing valve according to claim 2 is characterized in that: The frame buckle (1301) on the other side of the speed reducing inner bracket (13) is buckled and fixed to the outer diameter groove of the motor (14) in the motor box (15), and the cover buckle (2701) of the motor cover (27) is buckled and fixed to the box buckle (1501) on the outer diameter of the motor box (15).

4. The intelligent gas quick-closing valve according to claim 1 is characterized in that: The center of the output tooth (8) in the reduction assembly is fixed to the reduction inner bracket (13) through a first positioning pin (9), and one end of the spring (24) of the shaft core (7) is fixed to the motor box (15) through a second positioning pin (25).

5. The intelligent gas quick-closing valve according to claim 1 is characterized in that: The valve sealing assembly comprises a valve port seal (2), a valve port bracket (3) and a drive shaft (6); the valve port seal is back-pressure mounted on the valve port bracket; the outer diameter of the valve port bracket is wrapped with the valve port seal; the valve port bracket and the valve port seal are arranged in a sealing cavity between the valve body (1) and the cover plate (4); the valve port bracket is fixed to one end of the drive shaft (6).

6. The intelligent gas quick-closing valve according to claim 1, characterized in that: A cover plate sealing gasket (5) is provided at the connection between the motor box and the cover plate (4) where the driving shaft (6) of the motor box (15) protrudes, and the buckle groove of the cover plate is buckled with the valve buckle of the valve body.

7. The intelligent gas quick-closing valve according to claim 1, characterized in that: A switch assembly is fixedly provided on one side of the motor cover (27) on the outer diameter of the reduction gear cover (26); a switch plug (31) of the switch assembly plugs a plug hole (32) on one side of the switch body (30); a control line of the switch assembly passes through the switch plug and comes out from the outlet hole of the motor cover; a movable spring and a fixed spring are provided on the switch body; and the movable spring contacts the outer diameter of the drive shaft.

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