CN220268475U - Gate valve of gas meter - Google Patents

Abstract

The utility model belongs to the technical field of gate valves and discloses a gas meter gate valve which comprises a shell, wherein an air outlet is formed in the top of the shell, an air inlet is formed in the bottom of the shell, a valve interface is arranged on the air inlet, a pin motor is arranged in the shell, the output end of the pin motor is connected with a screw rod through a speed reducing mechanism, a nut is sleeved on the screw rod, a screw rod sleeve is fixedly connected with the screw rod sleeve, one side of the screw rod sleeve is fixedly connected with a gate plate seat, the bottom of the gate plate seat is fixedly connected with a gate plate, one side of the gate plate is provided with a magnet, a reluctance signal switch and a switch pressing plate are further arranged on the shell, a small sealing ring and a pressing ring are further arranged in the speed reducing box, a fixing ring is further arranged on the shell and the nut, and a corrugated pipe is arranged between the two fixing rings. The utility model has novel structure, reduces the cost while reducing the pressure loss, improves the metering accuracy and prevents the influence on the air supply.

Description

Gate valve of gas meter

Technical Field

The utility model relates to the technical field of gate valves, in particular to a gas meter gate valve.

Background

The motor valve used in the existing industrial gas meter is generally a stop valve or a ball valve, and the stop valve is durable due to small friction force between sealing surfaces in the opening and closing process, has small opening height, is easy to manufacture and convenient to maintain, is not only suitable for medium and low pressure, but also suitable for high pressure, but has large pressure loss, so that the metering is inaccurate and the gas supply is influenced; the ball valve is a valve with an opening and closing piece (ball body) driven by a valve rod and rotating around the axis of the ball valve, and the ball valve has very small pressure loss but higher cost, so that the ball valve is not beneficial to people to use. For the related art problems, no solution has been proposed yet.

Disclosure of Invention

Aiming at the problems in the related art, the utility model provides a gas meter gate valve to overcome the technical problems in the prior art, and aims to reduce the cost, improve the metering accuracy and prevent the influence on gas supply while reducing the pressure loss.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a gas table flashboard valve, includes the casing, the gas outlet has been seted up at the top of casing, the air inlet has been seted up to the bottom of casing, install the valve interface on the air inlet, the inside of casing is provided with the pin motor, one side of pin motor is provided with membrane encapsulating lid, the output of pin motor is connected with the lead screw through reduction gears, the cover is equipped with the nut on the lead screw, nut and lead screw-thread fit, fixedly connected with lead screw cover on the nut, one side fixedly connected with flashboard seat of lead screw cover, the bottom fixedly connected with flashboard of flashboard seat, the one end of valve interface still is provided with big sealing ring, one side of flashboard is provided with magnet, still be provided with magnetic resistance signal switch and switch clamp plate on the casing.

Preferably, the inside of casing is provided with the reducing gear box, reduction gears sets up the inside at the reducing gear box, reduction gears includes motor gear, drive gear and output gear, motor gear and pin motor's output fixed connection, drive gear respectively with motor gear and output gear meshing, output gear fixed cover is established on the lead screw.

Preferably, the inside of reducing gear box still is provided with little sealing ring and clamping ring, the clamping ring sets up in one side of little sealing ring, little sealing ring and clamping ring all overlap the outside of establishing at the lead screw.

Preferably, the shell and the nut are further provided with fixing rings, and a corrugated pipe is arranged between the two fixing rings.

Preferably, the shell comprises an upper shell and a lower shell, the lower shell is arranged below the upper shell, and the upper shell and the lower shell are fixedly connected through screws.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model relates to a gas meter gate valve, which drives a motor gear, a transmission gear and an output gear to rotate by clockwise or anticlockwise rotation of a pin motor, so as to drive a screw rod to rotate, and the screw rod drives a nut matched with the screw rod to do linear motion leftwards or rightwards when rotating, a corresponding gate plate is separated from or contacted with a large sealing ring, when one side or the other side of a reluctance signal switch corresponds to the position of a magnet, the reluctance signal switch is connected with a signal and feeds back to a control circuit board, the circuit board stops supplying power to the pin motor, namely, the valve is completely opened or closed at the moment, the cost is reduced while the pressure loss is small, the metering accuracy is improved, and the influence on gas supply is prevented.

Drawings

FIG. 1 is a schematic view of the present utility model in elevation and cross section;

FIG. 2 is a schematic view of the structure of the housing of the present utility model;

fig. 3 is a schematic structural view of the shutter of the present utility model.

In the reference numerals: 1. a housing; 101. an upper case; 102. a lower case; 2. an air outlet; 3. a valve interface; 4. a pin motor; 5. film glue pouring cover; 6. a screw rod; 7. a motor gear; 8. a transmission gear; 9. an output gear; 10. a nut; 11. a screw rod sleeve; 12. a flashboard seat; 13. a flashboard; 14. a large seal ring; 15. a fixing ring; 16. a bellows; 17. a magnet; 18. a magneto-resistive signal switch; 19. a switch pressing plate; 20. a reduction gearbox; 21. a small seal ring; 22. and (5) pressing the ring.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

Examples

Referring to fig. 1-3, the present utility model proposes a technical solution for a gas meter gate valve: the utility model provides a gas table flashboard valve, including casing 1, specifically, casing 1 plays the effect of protection, and gas outlet 2 has been seted up at the top of casing 1, and the air inlet has been seted up to the bottom of casing 1, installs valve interface 3 on the air inlet, and the inside of casing 1 is provided with pin motor 4, specifically, pin motor 4 adopts the pin structure, welds the electric wire with the pin on the pin motor 4, directly welds with the electric wire, and one side of pin motor 4 is provided with membrane encapsulating lid 5, specifically, pours into the sealant into membrane encapsulating lid 5 into, makes its protection welding point and seal; the output end of the pin motor 4 is connected with a screw rod 6 through a speed reducing mechanism, a nut 10 is sleeved on the screw rod 6, the nut 10 is in threaded fit with the screw rod 6, a screw rod sleeve 11 is fixedly connected to the nut 10, a flashboard seat 12 is fixedly connected to one side of the screw rod sleeve 11, a flashboard 13 is fixedly connected to the bottom of the flashboard seat 12, and particularly, the flashboard 13 adopts ceramics, so that when the ceramic surface can achieve higher smoothness and flatness to enable friction with a sealing ring, friction force between the screw rod 6 and the screw rod is reduced, the smoothness is high, the sealing performance between a large sealing ring 14 can be better ensured, the service life is long, and common plastic materials are made into parts which are difficult to meet the technical requirements; one end of the valve interface 3 is also provided with a large sealing ring 14, and specifically, the large sealing ring 14 plays a role in sealing; one side of the shutter 13 is provided with a magnet 17, and the casing 1 is also provided with a reluctance signal switch 18 and a switch pressing plate 19.

Referring to fig. 1, further, a reduction gearbox 20 is disposed in the casing 1, a reduction mechanism is disposed in the reduction gearbox 20, the reduction mechanism includes a motor gear 7, a transmission gear 8 and an output gear 9, the motor gear 7 is fixedly connected with an output end of the pin motor 4, the transmission gear 8 is respectively meshed with the motor gear 7 and the output gear 9, and the output gear 9 is fixedly sleeved on the screw rod 6.

In this embodiment, the pin motor 4 drives the motor gear 7 to rotate when rotating clockwise or anticlockwise, the motor gear 7 drives the transmission gear 8 to rotate when rotating, and the transmission gear 8 drives the output gear 9 to rotate when rotating, so as to drive the screw rod 6 connected with the output gear 9 to rotate.

Referring to fig. 1, further, a small sealing ring 21 and a pressing ring 22 are further disposed inside the reduction gearbox 20, the pressing ring 22 is disposed at one side of the small sealing ring 21, and the small sealing ring 21 and the pressing ring 22 are both sleeved outside the screw rod 6.

In the present embodiment, the small seal ring 21 functions as a seal.

Referring to fig. 1-3, further, a fixing ring 15 is further disposed on the housing 1 and the nut 10, and a bellows 16 is disposed between the two fixing rings 15.

In this embodiment, the nut 10 moves to move the fixing ring 15 on the nut 10, so as to extend or retract the bellows 16.

Referring to fig. 1, further, the housing 1 includes an upper case 101 and a lower case 102, the lower case 102 is disposed below the upper case 101, and the upper case 101 and the lower case 102 are fixedly connected by screws.

The working principle of the utility model is as follows:

when the valve is opened:

the lead screw motor 4 is input with DC4.5V-6V forward voltage, the lead screw motor 4 drives the motor gear 7 to rotate when rotating clockwise, the motor gear 7 drives the transmission gear 8 to rotate when rotating, the transmission gear 8 drives the output gear 9 to rotate when rotating, thereby driving the lead screw 6 connected with the output gear 9 to rotate, the lead screw 6 rotates to drive the nut 10 matched with the lead screw 6 to do linear motion to the left, then the flashboard seat 12 and the flashboard 13 connected with the nut 10 are driven to do linear motion to the left together, the corresponding flashboard 13 is separated from the large sealing ring 14 and is slowly separated from the large sealing ring, when one side of the reluctance signal switch 18 corresponds to the position of the magnet 17, the reluctance signal switch 18 is connected with a signal and feeds back to the control circuit board, and the circuit board stops supplying power to the lead screw motor 4, namely, the valve is completely opened at the moment. The valve is in an open state. Opening the valve (namely, conducting air flow) is realized;

valve Guan Qishi:

the pin motor 4 is input with DC4.5V-6V reverse voltage, the pin motor 4 drives the motor gear 7 to rotate when rotating anticlockwise, the motor gear 7 drives the transmission gear 8 to rotate when rotating, the transmission gear 8 drives the output gear 9 to rotate when rotating, thereby driving the screw rod 6 connected with the output gear 9 to rotate, the screw rod 6 rotates to drive the nut 10 matched with the screw rod 6 to do linear motion to the right, then the flashboard seat 12 and the flashboard 13 connected with the nut 10 are driven to do linear motion to the right together, the corresponding flashboard 13 is gradually contacted with the large sealing ring 14, and finally, the corresponding flashboard is completely contacted, when the other side on the reluctance signal switch 18 corresponds to the position of the magnet 17, the reluctance signal switch 18 is connected with a signal and feeds back to the control circuit board, and the circuit board stops supplying power to the pin motor 4, namely, the valve is completely closed at the moment. The valve is in a closed state. Closing of the valve (i.e. blocking of the air flow) is achieved.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a gas table flashboard valve, its characterized in that, including casing (1), gas outlet (2) have been seted up at the top of casing (1), the air inlet has been seted up to the bottom of casing (1), install valve interface (3) on the air inlet, the inside of casing (1) is provided with pin motor (4), one side of pin motor (4) is provided with membrane encapsulating lid (5), the output of pin motor (4) is connected with lead screw (6) through reduction gears, the cover is equipped with nut (10) on lead screw (6), nut (10) and lead screw (6) screw-thread fit, fixedly connected with lead screw cover (11) on nut (10), one side fixedly connected with flashboard seat (12) of lead screw cover (11), the bottom fixedly connected with flashboard (13) of flashboard seat (12), one end of valve interface (3) still is provided with big sealing ring (14), one side of flashboard (13) is provided with magnet (17), still be provided with magnetic resistance signal switch (18) and switch clamp plate (19) on casing (1).

2. The gas meter gate valve according to claim 1, wherein a reduction gearbox (20) is arranged in the shell (1), the reduction gearbox is arranged in the reduction gearbox (20), the reduction gearbox comprises a motor gear (7), a transmission gear (8) and an output gear (9), the motor gear (7) is fixedly connected with the output end of the pin motor (4), the transmission gear (8) is respectively meshed with the motor gear (7) and the output gear (9), and the output gear (9) is fixedly sleeved on the screw rod (6).

3. The gas meter gate valve according to claim 2, wherein a small sealing ring (21) and a pressing ring (22) are further arranged in the reduction gearbox (20), the pressing ring (22) is arranged on one side of the small sealing ring (21), and the small sealing ring (21) and the pressing ring (22) are both sleeved outside the screw rod (6).

4. A gas meter gate valve according to claim 1, characterized in that the housing (1) and the nut (10) are further provided with a fixing ring (15), and a bellows (16) is arranged between the two fixing rings (15).

5. The gas meter gate valve according to claim 1, wherein the housing (1) comprises an upper shell (101) and a lower shell (102), the lower shell (102) is arranged below the upper shell (101), and the upper shell (101) and the lower shell (102) are fixedly connected through screws.