Built-in motor valve of gas meter

Abstract

The utility model relates to a gas meter built-in motor valve which comprises a valve body, a valve middle plate and a machine shell, a planetary device is installed between the machine shell and the valve middle plate, a sealing device is arranged between the valve body and the valve middle plate, the planetary device comprises a motor arranged in the machine shell, a planet carrier is arranged outside the motor, and a driving gear is arranged at the output end of the motor. The driving gear is meshed with a planet gear, the output end of the planet gear is meshed with an inner gear connected to the outer end of the planet carrier, a screw penetrates through the inner gear, an inner gear boss is arranged at the outer end of the inner gear, and a screw boss used in cooperation with the inner gear boss is arranged at the lower end of the screw. According to the principle that the motor drives the planetary gear to work, the sealing device is driven to move up and down in the valve body while the screw rod moves up and down, so that the purposes of reliable movement and low cost of a switching valve are achieved while the valve of a large-torque switching valve mechanism is achieved and the size of the valve is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent gas meters, in particular to a gas meter built-in motor valve. Background Art

[0002] At present, valves are often used in the process of using gas meters. The valve is crucial for a gas meter. When we encounter arrears during the use of the gas meter, the valve will be closed. When there are scenarios such as gas use safety (leakage, overpressure), the electronic sensor senses the pressure, and after software identification, the valve is controlled to open or close. However, in some existing gas meter valves, due to the small space inside the gas meter, the transmission mechanism and transmission ratio are small, so the transmission torque is not large. When using, occasionally due to rust and impurities in the pipeline, when the resistance during the valve opening and closing movement is greater than the torque, the valve cannot be closed tightly or the valve opening is not in place. Content of the Utility Model

[0003] The purpose of the utility model is to provide a gas meter built-in motor valve, which uses the principle of planetary gear operation to achieve a valve with a large torque switching mechanism. While reducing the volume of the valve, it realizes the reliable movement of the valve opening and closing and the purpose of low cost.

[0004] To solve the above technical problems, the utility model is solved by the following technical solutions: A gas meter built-in motor valve includes a valve body, a valve intermediate plate, and a housing. A planetary device is installed between the housing and the valve intermediate plate. A sealing device connected to the output end of the planetary device is provided between the valve body and the valve intermediate plate. The planetary device includes a motor disposed in the housing. A planetary carrier is provided outside the motor. A driving gear is provided at the output end of the motor. The driving gear meshes with a planetary gear. The output end of the planetary gear meshes with an internal gear. A screw rod passes through the internal gear. An internal gear boss is provided at the outer end of the internal gear. A screw rod boss that cooperates with the internal gear boss is provided at the lower end of the screw rod. The sealing device is connected to the upper part of the screw rod.

[0005] Preferably, the sealing device includes a valve sealing component with one end passing through the valve intermediate plate and a sealing capsule sleeved on the outer wall of the valve intermediate plate. A limiting member is sleeved outside the sealing capsule.

[0006] More preferably, the valve sealing component includes a screwing sleeve that is screwed with the screw rod. A valve sealing plate extending into the valve body is provided at the upper end of the screwing sleeve. A connecting tooth for detachably connecting with the connecting hole is provided at one end of the screwing sleeve.

[0007] More preferably, a sealing gasket is provided between the valve body and the valve intermediate plate, and an O-ring is provided between the valve intermediate plate and the housing.

[0008] Further preferably, the valve intermediate plate includes an outer frame connected to the valve body. An inner collar is provided inside the outer frame. An inner sheath for facilitating the passing of the screw rod is provided inside the inner collar. A rear collar is provided at the lower end of the outer frame. The sealing gasket is provided inside the outer frame, and the O-ring is provided inside the rear collar.

[0009] Further preferably, external teeth are provided on the outer frame, internal teeth are provided on the outer wall of the inner collar, and rear teeth are provided on the outer wall of the rear collar. An external locking block that cooperates with and is snap-connected to the external teeth is provided on the valve body. An internal locking hole that cooperates with and is snap-connected to the internal teeth is provided on the limiting member. A rear slot that cooperates with and is snap-connected to the rear teeth is provided at the upper end of the casing.

[0010] Further preferably, the planet carrier includes an internal gear connecting shaft and a planetary gear connecting shaft. A notch for facilitating the meshing of the planetary gear with the internal gear is formed on one side of the planet carrier corresponding to the planetary gear. A plurality of buckling teeth for connecting the motor are evenly distributed at the rear end of the planet carrier. A wire passing hole is further provided at the rear end of the planet carrier, and a wire passing plug is connected to the wire passing hole.

[0011] The beneficial effects of the present utility model are as follows: It includes a valve body, a valve intermediate plate, and a casing. A planetary device is installed between the casing and the valve intermediate plate. A sealing device connected to the output end of the planetary device is provided between the valve body and the valve intermediate plate. The planetary device includes a motor provided inside the casing. A planet carrier is provided outside the motor. A driving gear is provided at the output end of the motor. The driving gear meshes with a planetary gear. The output end of the planetary gear meshes with an internal gear. A screw rod passes through the internal gear. An internal gear boss is provided at the outer end of the internal gear. A screw rod boss that cooperates with the internal gear boss is provided at the lower end of the screw rod. The sealing device is connected to the upper part of the screw rod. By utilizing the principle of driving the planetary gear to work by the motor, while the screw rod moves up and down, the sealing device is driven to move up and down inside the valve body, achieving a valve of a large-torque switching valve mechanism, reducing the volume of the valve, and simultaneously realizing the reliable movement and low cost of the valve for opening and closing. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the present utility model.

[0013] Figure 2 is a cross-sectional view of the gas meter valve in the closed state of the present utility model.

[0014] Figure 3 is a cross-sectional view of the gas meter valve in the open state of the present utility model.

[0015] Figure 4 is a schematic structural diagram of the valve intermediate plate of the present utility model.

[0016] Figure 5This is a schematic structural view of the planet carrier of the present utility model.

[0017] Figure 6 This is a schematic structural view of the planet carrier of the present utility model from another angle. Detailed implementation mode

[0018] The present utility model will be further described in detail below in conjunction with the drawings and embodiments.

[0019] As Figure 1-6 shown, a gas meter built-in motor 4 valve includes a valve body 1, a valve intermediate plate 2 and a casing 3. A planetary device is installed between the casing 3 and the valve intermediate plate 2. A sealing device connected to the output end of the planetary device is provided between the valve body 1 and the valve intermediate plate 2. The planetary device includes a motor 4 arranged in the casing 3. A planet carrier 5 is arranged outside the motor 4. A driving gear 6 is provided at the output end of the motor 4. The driving gear 6 meshes with a planetary gear 7. The output end of the planetary gear 7 meshes with an internal gear 8. A screw 9 passes through the internal gear 8. An internal gear boss 10 is provided at the outer end of the internal gear 8. A screw boss 11 cooperating with the internal gear boss 10 is provided at the lower end of the screw 9. The sealing device is connected to the upper part of the screw 9. When the motor 4 is powered on and the driving gear 6 rotates, it drives the meshing planetary gear 7 to rotate, and then drives the internal gear 8 to rotate, so that the internal gear boss 10 drives the screw boss 11 to rotate concentrically around the internal gear 8 of the planet carrier 5 during rotation. Therefore, the screw 9 rotates synchronously with the internal gear 8. The rotation of the screw 9 drives the valve seal assembly 12 to move up and down along the axial direction of the screw 9, realizing the valve opening and closing function. By using the principle of driving the planetary gear 7 by the motor 4, while the screw 9 moves up and down, the sealing device is driven to move up and down in the valve body 1, achieving a valve with a large torque switching valve mechanism, reducing the volume of the valve, and realizing the reliable movement and low cost of the valve opening and closing.

[0020] As Figure 1 described, in this embodiment, the sealing device includes a valve seal assembly 12 with one end passing through the valve intermediate plate 2 and a sealing capsule 13 sleeved on the outer wall of the valve intermediate plate 2. A limiting member 14 is sleeved outside the sealing capsule 13. The valve seal assembly 12 includes a screwing sleeve 121 screwed with the screw 9, a valve seal plate 122 extending into the valve body 1 at the upper end of the screwing sleeve 121, and a connecting tooth 123 detachably connected to the connecting hole at one end of the screwing sleeve 121. The valve seal plate 122 and the screwing sleeve 121 are detachably connected, facilitating the replacement of the valve seal plate 122. When the screw 9 rotates synchronously with the internal gear 8, it drives the valve seal assembly 12 to move up and down along the axial direction of the screw 9, realizing the valve opening and closing function.

[0021] As Figure 1 、 4As described above, in this embodiment, a gasket 15 is provided between the valve body 1 and the valve intermediate plate 2, and an O-ring 16 is provided between the valve intermediate plate 2 and the housing 3. The valve intermediate plate 2 includes an outer frame 21 connected to the valve body 1. An inner collar 22 is provided inside the outer frame 21. An inner sheath 23 facilitating the passing of the screw 9 is provided inside the inner collar 22. A rear collar 24 is provided at the lower end of the outer frame 21. The gasket 15 is provided inside the outer frame 21. The O-ring 16 is provided inside the rear collar 24. Outer engaging teeth 25 are provided on the outer frame 21. Inner engaging teeth 26 are provided on the outer wall of the inner collar 22. Rear engaging teeth 27 are provided on the outer wall of the rear collar 24. An outer engaging block 28 engaged with the outer engaging teeth 25 is provided on the valve body 1. An inner engaging hole 29 engaged with the inner engaging teeth 26 is provided on the limiting member 14. A rear engaging groove 210 engaged with the rear engaging teeth 27 is provided at the upper end of the housing 3. The detachable connection between the valve body 1 and the valve intermediate plate 2 is facilitated by the engaging connection between the outer engaging teeth 25 and the outer engaging block 28. The detachable engaging connection between the limiting member 14 and the sealing capsule 13 is facilitated by the engaging connection between the inner engaging teeth 26 and the inner engaging hole 29. The engaging connection between the housing 3 and the valve intermediate plate 2 is facilitated by the engaging connection between the rear engaging teeth 27 and the rear engaging groove 210, and the detachable engaging connection between the valve body 1 and the valve intermediate plate 2 is also facilitated.

[0022] As Figure 1 , 5 As described above, in this embodiment, the planet carrier 5 includes an internal gear connecting shaft 51 and a planetary gear connecting shaft 52. A notch 53 facilitating the meshing of the planetary gear 7 with the internal gear 8 is formed on one side of the planet carrier 5 corresponding to the planetary gear 7. A plurality of engaging teeth 54 for connecting the motor 4 are evenly distributed at the rear end of the planet carrier 5. A wire passing hole is further provided at the rear end of the planet carrier 5. A wire passing plug 55 is connected to the wire passing hole. The wire passing plug 55 is connected to the housing 3 to facilitate the series connection of the power cord. The meshing transmission between the planetary gear 7 and the internal gear 8 is facilitated by forming the notch 53. The connection between the motor 4 and the planet carrier 5 is facilitated by the engaging teeth 54, which is beneficial to the stable transmission between the driving gear 6 of the motor 4 and the planetary gear 7. The planet carrier 5 is provided with a planetary gear connecting shaft 52 and an internal gear connecting shaft 51. The axial positioning of the screw 9 is coaxial with the internal gear 8, which is also the central axis on the planet carrier 5. Through the above structure, multi-stage gear transmission can be fully realized in a small space, and a larger transmission ratio can be obtained. When the current of the motor 4 is required to be small, it has a larger transmission ratio, which can reduce the power consumption of the motor 4 valve.

[0023] According to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. A gas meter with a built-in motor valve, characterized in that: It includes a valve body, a valve middle plate and a casing, a planetary device is installed between the casing and the valve middle plate, a sealing device connected to the output end of the planetary device is provided between the valve body and the valve middle plate, the planetary device includes a motor arranged in the casing, a planetary carrier is provided outside the motor, a driving gear is provided at the output end of the motor, the driving gear is meshed with a planetary gear, the output end of the planetary gear is meshed with an internal gear, a screw is passed through the internal gear, an internal gear boss is provided at the outer end of the internal gear, a screw boss used in conjunction with the internal gear boss is provided at the lower end of the screw, and the sealing device is connected to the upper part of the screw.

2. A gas meter built-in motor valve according to claim 1, characterized in that: The sealing device comprises a valve sealing component with one end passing through the valve middle plate and a sealing bag sleeved on the outer wall of the valve middle plate, wherein a limiting piece is sleeved on the outer cover of the sealing bag.

3. A gas meter built-in motor valve according to claim 2, characterized in that: The valve sealing assembly includes a threaded sleeve threadedly connected to the screw rod, the upper end of the threaded sleeve extends into a valve sealing plate in the valve body, a connecting hole is opened in the middle of the valve sealing plate, and one end of the threaded sleeve is provided with connecting teeth that are detachably connected to the connecting hole.

4. A gas meter built-in motor valve according to claim 2, characterized in that: A sealing gasket is arranged between the valve body and the valve middle plate, and an O-ring is arranged between the valve middle plate and the casing.

5. A gas meter built-in motor valve according to claim 4, characterized in that: The valve middle plate includes an outer frame connected to the valve body, an inner ring is arranged inside the outer frame, an inner sleeve is arranged inside the inner ring for the screw to pass through, a rear ring is arranged at the lower end of the outer frame, the sealing gasket is arranged in the outer frame, and the O-ring is arranged in the rear ring.

6. A gas meter built-in motor valve according to claim 5, characterized in that: The outer frame is provided with external latching teeth, the outer wall of the inner ring is provided with internal latching teeth, the outer wall of the rear ring is provided with rear latching teeth, the valve body is provided with an external latching block that cooperates with the external latching teeth, the limit member is provided with an internal latching hole that cooperates with the internal latching teeth, and the upper end of the casing is provided with a rear latching groove that cooperates with the rear latching teeth.

7. A gas meter built-in motor valve according to claim 2, characterized in that: The planetary carrier includes an internal gear connecting shaft and a planetary gear connecting shaft. A notch is provided on one side of the planetary carrier corresponding to the planetary gear to facilitate the engagement of the planetary gear with the internal gear. A plurality of buckle teeth for connecting the motor are evenly distributed at the rear end of the planetary carrier. A wire passing hole is also provided at the rear end of the planetary carrier, and a wire passing plug is connected to the wire passing hole.

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