External quick-closing ball valve

Abstract

The utility model relates to an external quick-closing ball valve which aims at solving the technical problems that a speed reducer assembly of an existing similar product is large in size, inconvenient to produce and assemble, poor in stability, large in power consumption and poor in torque transmission structure and linkage limiting structure. The quick-closing ball valve is characterized in that a first tension spring is arranged at a lower rotating shaft at the bottom of a ball body in a valve body of the quick-closing ball valve, an upper rotating shaft at the top of the ball body sequentially extends out of the valve body, a top cover and a top seat and is connected with a speed reducer assembly in an outer cover, and a motor shaft at a motor in the speed reducer assembly is connected with an output gear at the upper rotating shaft through a gear coil spring assembly; a one-way bearing is arranged at the axis of a first gear of the gear coil spring assembly, and the first gear and a second gear are meshed and arranged at the two ends of the connector respectively. The coil spring is arranged on a coil spring gear shaft at the axis of the coil spring gear, a gear ring at one end of the coil spring gear shaft at the bottom of the coil spring gear is meshed with the output gear, and a second tension spring of a connector at one end of the first gear drives the first gear to reset and is meshed with the coil spring gear.

Description

Technical Field

[0001] The utility model relates to a motor valve, in particular to an externally-mounted quick-closing ball valve. Background Art

[0002] A motor valve, also known as an electric valve, can not only control the opening and closing of a valve, but also adjust the magnitude of the valve opening and closing amount. The drive of an electric valve is generally a motor, and it takes a certain amount of time for the opening or closing action to complete, which can be adjusted, and it is relatively resistant to voltage impact. The states include open, closed, half-open, and half-closed, and it can control the flow rate of the medium in the pipeline. Some existing motor valves are provided with a spring-type elastic member, such as the patent application No. 202310914435.6 disclosed in the Chinese patent literature, the application publication date is October 13, 2023, and the invention name is "A quick-closing ball valve for a gas meter"; some existing motor valves are provided with a speed reduction mechanism and a battery, such as the patent application No. 202220647423.2 disclosed in the Chinese patent literature, the authorization announcement date is July 29, 2022, and the utility model name is "A floating ball valve for a flow meter"; however, the reducer assemblies of the above products and similar products are relatively large in volume, inconvenient for production and assembly, poor in stability, high in power consumption, and the torque transmission structure and the linkage limit structure are not good enough, and further improvement and perfection are needed. Summary of the Invention

[0003] To overcome the above deficiencies, the purpose of the present utility model is to provide an externally-mounted quick-closing ball valve to the art, so as to solve the technical problems of the relatively large volume of the reducer assembly of existing similar products, inconvenient production and assembly, poor stability, high power consumption, and poor torque transmission structure and linkage limit structure. The purpose is achieved by the following technical solutions.

[0004] An external quick - closing ball valve. A sphere is arranged inside the valve body of the quick - closing ball valve. One side plane of the sphere abuts and seals against the channel on one side of the air outlet inside the valve body. A sealing ring is arranged at the inner hole of the valve body at the abutting and sealing position, or a sealing ring is arranged at the edge of the circumferential surface of the plane of the sphere. At the central axes at the top and bottom of the sphere, the two ends of the transmission shaft are respectively provided with an upper rotating shaft and a lower rotating shaft, and the lower rotating shaft of the sphere is arranged in the rotating shaft hole at the bottom inside the valve body. The key point of the structural design is that a first tension spring is arranged at the lower rotating shaft at the bottom of the sphere inside the valve body. One end of the first tension spring is buckled on the ball valve, and the other end is buckled on the stop post on one side of the lower rotating shaft; the upper rotating shaft at the top of the sphere inside the valve body sequentially extends out of the valve body, the top cover, and the top seat, and is connected to the reducer assembly inside the outer cover. The motor shaft at the motor in the reducer assembly is connected to the output gear at the upper rotating shaft through a gear - disc spring assembly. The manual column on one side of the connecting cover of the outer diameter of the motor is connected to the hexagon socket head screw at the top of the outer cover. The outer cover and the top seat are connected to form an inner cavity for arranging the reducer assembly. A battery is arranged on the circuit board in the inner cavity, and the motor is connected to the circuit board through a wire. The hexagon socket head screw of the above - mentioned outer cover is a wrench insertion hole for manual operation. The gear - disc spring assembly plays the role of clutch and energy storage, facilitating energy storage during the valve - opening process and energy release during the valve - closing process, and cooperating with the first tension spring to achieve quick valve - closing at the sphere.

[0005] The gear - disc spring assembly of the reducer assembly includes a connector, a first gear, a disc - spring gear, a disc - spring winding, a second tension spring, a gear cover, a disc - spring tooth shaft, and a second gear. The connector, the first gear, the disc - spring gear, the disc - spring winding, the second gear, and the output gear are arranged inside the gear cover. A one - way bearing is arranged at the center of the first gear. One side of the first gear inside the gear cover meshes with one side of the disc - spring gear. The first gear meshes with the second gear and is respectively arranged at both ends of the connector; the disc - spring winding is arranged on the disc - spring tooth shaft at the center of the disc - spring gear. The disc - spring winding is integrated with the disc - spring gear through the disc - spring tooth shaft. The bottom of the disc - spring tooth shaft is fixedly arranged on the top seat. At the same time, the tooth ring at one end of the disc - spring tooth shaft at the bottom of the disc - spring gear or the fixedly arranged transmission gear meshes with the output gear; the motor shaft of the motor is integrated with the center of the second gear at the connector inside the gear cover. The output gear at the upper rotating shaft of the sphere rotates synchronously with the second gear through the disc - spring tooth shaft, the disc - spring gear, the disc - spring winding, and the first gear; during the valve - opening process, the motor and the output gear respectively drive the disc - spring gear to rotate through the first gear at the same time, winding the disc - spring winding tightly. After the valve - opening is in place, the first tension spring is stretched; during the valve - closing process, the motor drives the reducer assembly to rotate in the reverse direction. The first gear bounces outwards and disengages from the disc - spring gear. The disc - spring winding and the first tension spring release their elastic forces simultaneously, and the valve at the sphere quickly closes in place. The first gear is driven by the second tension spring at one end of the connector to reset and mesh with the disc - spring gear.

[0006] While one side of the second gear of the gear disc spring assembly meshes with one side of the disc spring gear through one side of the first gear inside the gear cover, one end of the connector of the first gear and the second gear is connected to one end of the second pull spring on the outer diameter side of the gear cover through a pull spring post. The other end of the second pull spring is fixed to the outer diameter of the gear cover, and the pull spring post of the connector exposes or extends out of the sliding hole on one side of the gear cover. The above is the specific connection structure design of one end of the second pull spring and the connector.

[0007] The disc spring mainspring of the gear disc spring assembly is arranged on the top of the disc spring gear and is integrated through the disc spring tooth shaft. At the same time, a disc spring cover plate fixed to the top hole on one side of the gear cover by two screws along the edge is provided on the top of the disc spring mainspring. The other end of the second pull spring is fixed to one of the screws on the outer diameter of the gear cover; while one end of the inner ring of the disc spring mainspring is fixed to the opening groove at the disc spring tooth shaft, the other end of the outer ring of the disc spring mainspring extends out and is fixed to the fixing hole of the gear cover. The above is the specific connection structure design of the fixing method of the other end of the second pull spring, and the specific connection structure design of the disc spring mainspring, the disc spring gear, and the disc spring tooth shaft.

[0008] The disc spring gear and the disc spring mainspring of the gear disc spring assembly are arranged in the side chamber protruding on one side of the gear cover above the output gear. The output gear is arranged in the bottom opening of the main chamber of the gear cover. The connector, the first gear, and the second gear are arranged in the top opening of the main chamber of the gear cover. There are notches at the connection of the second pull spring at one end of the connector at the top of the main chamber of the gear cover and one end of the microswitch at the bottom of the main chamber of the gear cover respectively. The above is the specific connection structure design of the gear cover and the specific installation positions of the corresponding components at the gear cover.

[0009] The microswitch is arranged on one side of the speed reducer assembly on the inner top seat of the outer cover. When the switch post on one side of the top circle surface of the output gear extends out of the gear cover, the rotation of the output gear drives the switch post of the output gear to abut against the moving piece of the microswitch to trigger. According to the above structural characteristics, another microswitch can also be added to monitor the other working state position of the quick closing ball valve in real time.

[0010] The upper rotating shaft at the top of the sphere extends out of the valve body, the top cover, and the top seat in sequence through the transmission shaft. While one end of the transmission shaft at the top of the sphere is integrated with the output gear of the speed reducer assembly through the first shaft pin, the other end of the transmission shaft inside the valve body is provided with a second shaft pin. One end of the second shaft pin extends out of one side of the transmission shaft. When the sphere rotates, the extended end of the second shaft pin is limited to the limiting edge protruding from the bottom side of the inner top cover of the valve body. Thus, the first position limit of the sphere is realized.

[0011] On the sphere top at the symmetric other side of the extended end of the second shaft pin, there is a convex post protruding from the notch on one side of the end circle surface of the top cover. When the sphere rotates, the convex post of the sphere is limited to the limiting edge protruding from the bottom side of the inner top cover of the valve body. Thus, the second position limit of the sphere is realized.

[0012] On one side of the connecting cover, there is a flat key surface on the outer diameter of the manual column. The connecting cover is sleeved correspondingly with the flat key edge on the outer diameter of the motor housing of the motor through the flat key surface on one side. Thus, it is convenient to manually drive the connecting cover to deflect through the hexagon socket head cap screws on the outer cover, drive the connector and the first gear at the connection of the motor and the second gear of the connecting cover to deflect, that is, make the first gear bounce outwards to disengage from the disc spring gear manually, and the disc spring mainspring and the first tension spring release the elastic force simultaneously, and the valve at the elastic sphere closes quickly to the in-place.

[0013] Replace the hexagon socket head cap screws with wiring sleeves, omit the battery on the circuit board, and the circuit is externally connected to a power supply through a circuit.

[0014] The structure of the present utility model is reasonably designed, convenient for use, installation and production, with large and stable torque, small occupied volume and simple wiring; it is suitable for use as an internal and external quick closing ball valve of a gas meter and the structural improvement of similar products. Description of the Drawings

[0015] Figure 1 It is a partial cross-sectional structural schematic diagram of an embodiment of the present utility model. The dotted line in the figure is the outer cover, and the circuit board and the battery are omitted.

[0016] Figure 2 is Figure 1 The top view structural schematic diagram of.

[0017] Figure 3 is Figure 1 The partial exploded structural schematic diagram of.

[0018] Figure 4 is Figure 3 The three-dimensional structural schematic diagram after assembly of. The dotted line in the figure is the internal structure of the outer cover.

[0019] Figure 5 is Figure 4 The structural schematic diagram with the outer cover opened of. The dotted line in the figure is the internal structure of the valve body.

[0020] Figure 6 is Figure 4 The bottom view structural schematic diagram of. The dotted line in the figure is the valve body structure.

[0021] Reference Numerals and Names of the Drawings: 1. Valve body; 2. Sphere; 201. Convex column; 3. Stop post; 4. First tension spring; 5. Transmission shaft; 6. Top cover; 601. Limiting edge; 7. Top seat; 8. Microswitch; 9. Connector; 901. Tension spring post; 10. First gear; 11. Outer cover; 12. Allen screw; 13. Motor; 14. Connecting cover; 1401. Manual column; 15. Disc spring gear; 16. Disc spring strip; 17. Second tension spring; 19. Gear cover; 20. Output gear; 2001. Switch post; 21. Disc spring tooth shaft; 22. Disc spring cover plate; 23. Second gear; 24. First pin; 25. Second pin. Embodiment

[0022] Now in combination with the drawings, the structure and use of the present utility model will be further described. As Figures 1-6 shown, a sphere 2 is provided inside the valve body 1 of the quick - closing ball valve. One side plane of the sphere abuts and seals against the channel on one side of the air outlet inside the valve body. A sealing ring is provided at the inner hole of the valve body at the abutting and sealing position, or a sealing ring is provided at the edge of the circular surface of the plane of the sphere. At both ends of the transmission shaft at the central axis of the top and bottom of the sphere, an upper rotating shaft and a lower rotating shaft are respectively provided. The lower rotating shaft of the sphere is arranged in the rotating shaft hole at the bottom inside the valve body; a first tension spring 4 is provided at the lower rotating shaft at the bottom of the sphere inside the valve body. One end of the first tension spring is buckled on the ball valve, and the other end is buckled on the stop post 3 on one side of the lower rotating shaft; the upper rotating shaft at the top of the sphere inside the valve body sequentially extends out of the valve body, the top cover 6, and the top seat 7, and is connected to the speed reducer assembly inside the outer cover 11. At the motor 13 in the speed reducer assembly, the motor shaft is connected to the output gear 20 at the upper rotating shaft through a gear - disc spring assembly. The manual column 1401 on one side of the connecting cover 14 with the outer diameter of the motor is connected to the Allen screw 12 at the top of the outer cover. The outer cover is connected to the top seat to form an inner cavity for arranging the speed reducer assembly. A battery is provided on the circuit board in the inner cavity, and the motor is connected to the circuit board through a circuit.

[0023] The gear disc spring assembly of the above-mentioned reducer assembly includes a connector 9, a first gear 10, a disc spring gear 15, a disc spring spring 16, a second tension spring 17, a gear cover 19, a disc spring gear shaft 21 and a second gear 23. The connector, the first gear, the disc spring gear, the disc spring spring, the second gear and the output gear are arranged in the gear cover. A one-way bearing is provided at the axis of the first gear. One side of the first gear in the gear cover is meshed with one side of the disc spring gear. The first gear is meshed with the second gear and is respectively arranged at both ends of the connector; the disc spring spring is arranged on the disc spring gear shaft at the axis of the disc spring gear. The disc spring spring is connected to the disc spring gear through the disc spring gear shaft. The bottom of the disc spring gear shaft is fixedly arranged on the top seat. At the same time, the disc spring gear shaft at the bottom of the rotation spring gear The gear ring or fixed transmission gear at one end is meshed with the output gear; the motor shaft of the motor is connected to the axis of the second gear at the connector in the gear cover, and the output gear at the upper rotating shaft of the sphere rotates synchronously through the disc spring gear shaft, the disc spring gear, the disc spring spring, the first gear and the second gear; during the valve opening process, the motor and the output gear respectively drive the disc spring gear to rotate through the first gear at the same time, tighten the disc spring spring, and after the valve is opened, the first tension spring is stretched; during the valve closing process, the motor drives the reducer assembly to rotate in the opposite direction, the first gear bounces outward and disengages from the disc spring gear, the disc spring spring and the first tension spring release the elastic force at the same time, and the valve at the sphere is quickly closed, and the first gear is reset and meshed with the disc spring gear through the second tension spring of the connector at one end of the first gear.

[0024] When one side of the second gear of the gear disc spring assembly meshes with one side of the disc spring gear through one side of the first gear in the gear cover, one end of the connector of the first gear and the second gear is connected to one end of the second tension spring on the outer diameter side of the gear cover through the tension spring column 901, and the other end of the second tension spring is fixed to the outer diameter of the gear cover, and the tension spring column of the connector is exposed from the gear cover or extends out of the sliding hole on one side of the gear cover. The disc spring spring of the gear disc spring assembly is arranged on the top of the disc spring gear and connected as a whole through the disc spring gear shaft. The top of the disc spring spring is provided with a disc spring cover plate 22 fixed to the top opening of one side of the gear cover through two screws along the edge, and the other end of the second tension spring is fixed to one of the screws on the outer diameter of the gear cover; while one end of the inner ring of the disc spring spring is fixed to the open groove at the disc spring gear shaft, the other end of the outer ring of the disc spring spring extends out and is fixed to the fixing hole of the gear cover. The coil spring gear and coil spring spring of the gear coil spring assembly are arranged in a side chamber protruding on one side of the gear cover above the output gear, the output gear is arranged in the bottom opening of the main chamber of the gear cover, the connector, the first gear and the second gear are arranged in the top opening of the main chamber of the gear cover, and the second tension spring connection at one end of the connector at the top of the main chamber of the gear cover and the end of the micro switch at the bottom of the main chamber of the gear cover are respectively provided with notches. The micro switch is arranged on one side of the reducer assembly on the top seat in the outer cover, and when the switch column 2001 on one side of the top ring surface of the output gear extends out of the gear cover, the output gear rotates to drive the switch column of the output gear to collide with the dynamic spring of the micro switch to trigger.

[0025] The upper rotating shaft at the top of the above-mentioned sphere extends out of the valve body, the top cover, and the top seat in sequence through the transmission shaft. One end of the transmission shaft at the top of the sphere is integrally connected with the output gear of the reducer assembly through the first pin 24. At the same time, the other end of the transmission shaft in the valve body is provided with a second pin 25. One end of the second pin shaft extends out of one side of the transmission shaft. When the sphere rotates, the extended end of the second pin is limited to the limiting edge 601 protruding from the bottom side of the top cover in the valve body. On the side of the sphere at the top symmetric to the extended end of the second pin, there is a convex column 201 protruding from the notch on one side of the end face of the outer ring of the top cover 6. When the sphere rotates, the convex column of the sphere is limited to the above-mentioned limiting edge protruding from the bottom side of the top cover in the valve body. The flat key surface on the outer diameter of the manual column on one side of the connecting cover. The connecting cover is correspondingly sleeved with the flat key edge on the outer diameter of the motor housing of the motor through the flat key surface on one side.

[0026] According to the above structural characteristics, the hexagon socket head cap screw can also be replaced with a wiring sleeve, the circuit board omits the battery, and the circuit is externally connected to a power supply through a circuit; or after omitting the battery, a wiring hole is provided on one side of the outer cover for externally connecting a power supply.

[0027] The working principle of this quick-close ball valve is as follows: The motor drives the reducer assembly to work, the output gear drives the transmission shaft, and the transmission shaft drives the sphere to move backward. The output gear rotates 180°, and then drives the sphere to rotate 90° to open the valve. During the valve opening process, the output gear drives the disc spring gear to rotate, and winds up the disc spring; after the valve opening is in place, the first tension spring is also stretched. When closing the valve, the motor drives the reducer assembly to rotate in the reverse direction, the first gear (equipped with a one-way bearing) pops outwards, and the disc spring and the first tension spring release their elastic forces simultaneously, and the valve at the sphere quickly closes in place; One end of the second tension spring is buckled on the connector to ensure that the first gear can quickly reset after popping out.

Claims

1. An external quick-closing ball valve, wherein a ball (2) is arranged in a valve body (1) of the quick-closing ball valve, a plane on one side of the ball abuts against a channel on one side of an air outlet in the valve body to seal, an upper rotating shaft and a lower rotating shaft are respectively arranged at both ends of a transmission shaft at the center axis of the top and bottom of the ball, and the lower rotating shaft of the ball is arranged in a rotating shaft hole at the bottom of the valve body; characterized in that A first tension spring (4) is provided at the lower rotating shaft at the bottom of the ball body (2) in the valve body (1), one end of the first tension spring is buckled on the ball valve, and the other end is buckled on the retaining column (3) on one side of the lower rotating shaft; the upper rotating shaft at the top of the ball body in the valve body extends out of the valve body, the top cover (6), and the top seat (7) in sequence, and is connected to the reducer assembly in the outer cover (11); the motor shaft at the motor (13) in the reducer assembly is connected to the output gear (20) at the upper rotating shaft through the gear disc spring assembly; the manual column (1401) on one side of the connecting cover (14) on the outer diameter of the motor is connected to the hexagon socket screw (12) on the top of the outer cover; the outer cover and the top seat are connected to form an inner cavity for setting the reducer assembly; the circuit board of the inner cavity is provided with a battery, and the motor is connected to the circuit board through a line.

2. The external quick-closing ball valve according to claim 1 is characterized in that The gear coil spring assembly of the reducer assembly comprises a connector (9), a first gear (10), a coil spring gear (15), a coil spring mainspring (16), a second tension spring (17), a gear cover (19), a coil spring gear shaft (21) and a second gear (23). The connector, the first gear, the coil spring gear, the coil spring mainspring, the second gear and the output gear (20) are arranged in the gear cover. A one-way bearing is arranged at the axis of the first gear. One side of the first gear in the gear cover meshes with one side of the coil spring gear. The first gear meshes with the second gear and is respectively arranged at two ends of the connector. The coil spring mainspring is arranged on the coil spring gear shaft at the axis of the coil spring gear. The coil spring mainspring is connected to the coil spring gear through the coil spring gear shaft. The bottom of the coil spring gear shaft is fixedly arranged on the top seat (7). The gear ring or the fixed transmission gear at one end of the bottom disc spring gear shaft is meshed with the output gear; the motor shaft of the motor (13) is connected to the axis of the second gear at the connector in the gear cover as a whole, and the output gear at the upper rotating shaft of the sphere (2) rotates synchronously through the disc spring gear shaft, the disc spring gear, the disc spring spring, the first gear and the second gear; during the valve opening process, the motor and the output gear respectively drive the disc spring gear to rotate simultaneously through the first gear, tighten the disc spring spring, and after the valve is opened, the first tension spring (4) is stretched; during the valve closing process, the motor drives the reducer assembly to rotate in the opposite direction, the first gear bounces outward and disengages from the disc spring gear, the disc spring spring and the first tension spring release elastic force at the same time, and the valve at the sphere is quickly closed, and the second tension spring of the connector at one end of the first gear drives the first gear to reset and mesh with the disc spring gear.

3. The external quick-closing ball valve according to claim 2 is characterized in that One side of the second gear (23) of the gear disc spring assembly meshes with one side of the disc spring gear (15) through one side of the first gear (10) in the gear cover (19), and one end of a connector (9) between the first gear and the second gear is connected to one end of a second tension spring (17) on one side of the outer diameter of the gear cover through a tension spring column (901), and the other end of the second tension spring is fixed to the outer diameter of the gear cover, and the tension spring column of the connector is exposed from the gear cover or extends out of a sliding hole on one side of the gear cover.

4. The external quick-closing ball valve according to claim 3 is characterized in that The coil spring spring (16) of the gear coil spring assembly is arranged on the top of the coil spring gear (15) and is connected as a whole through the coil spring gear shaft (21). The top of the coil spring spring is provided with a coil spring cover plate (22) fixed to the top hole of one side of the gear cover (19) through two screws along the edge. The other end of the second tension spring (17) is fixed to the outer diameter of the gear cover. One end of the inner ring of the coil spring spring is fixed to the open groove at the coil spring gear shaft, and the other end of the outer ring of the coil spring spring extends out and is fixed to the fixing hole of the gear cover.

5. The external quick-closing ball valve according to claim 2 is characterized in that The coil spring gear (15) and the coil spring spring (16) of the gear coil spring assembly are arranged in a side chamber protruding on one side of the gear cover (19) above the output gear (20), the output gear is arranged in the bottom opening of the main chamber of the gear cover, the connector (9), the first gear (10), and the second gear (23) are arranged in the top opening of the main chamber of the gear cover, and the connection point of the second tension spring (17) at one end of the connector at the top of the main chamber of the gear cover and the end of the micro switch (8) at the bottom of the main chamber of the gear cover are respectively provided with notches.

6. The external quick-closing ball valve according to claim 5, characterized in that The micro switch (8) is arranged on one side of the reducer assembly on the top seat (7) inside the outer cover (11). When the switch column (2001) on one side of the top ring surface of the output gear (20) extends out of the gear cover (19), the output gear rotates to drive the switch column of the output gear to contact with the movable spring of the micro switch to trigger.

7. The external quick-closing ball valve according to claim 1, characterized in that The upper rotating shaft at the top of the sphere (2) extends out of the valve body (1), the top cover (6), and the top seat (7) in sequence through the transmission shaft (5). One end of the transmission shaft at the top of the sphere is connected to the output gear (20) of the reducer assembly through a first shaft pin (24). At the same time, a second shaft pin (25) is provided at the other end of the transmission shaft in the valve body. One end of the second shaft pin extends out of one side of the transmission shaft. When the sphere rotates, the extended end of the second shaft pin is limited to a raised limiting edge (601) on one side of the bottom of the top cover (6) in the valve body.

8. The external quick-closing ball valve according to claim 7, characterized in that A convex column (201) extending out of a notch on one side of the end ring surface of the top cover (6) is provided on the top of the spherical body (2) symmetrically on the other side of the protruding end of the second axle pin (25). When the spherical body rotates, the convex column of the spherical body is limited to the protruding limiting edge (601) on one side of the bottom of the top cover (6) in the valve body.

9. The external quick-closing ball valve according to claim 1, characterized in that The manual column (1401) on one side of the connection cover (14) has a flat key surface on one side of the outer diameter, and the connection cover is correspondingly fitted with a flat key edge on one side of the outer diameter of the motor housing of the motor (13) through the flat key surface on one side.

10. The external quick-closing ball valve according to claim 1, characterized in that The circuit is externally connected to a power supply through a line.

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