CN220185981U - Quick-closing ball valve of gas meter - Google Patents

Abstract

The utility model relates to the field of gas meter valves, and discloses a gas meter quick-closing ball valve, which comprises the following components: the gas-fired boiler comprises a shell, wherein a motor, a gas channel, a valve core and a valve rod connected with the valve core are arranged on the shell, the valve core is arranged in the gas channel and used for opening/closing the gas channel, a gear reduction assembly is arranged between an output wheel of the motor and the valve rod, a clutch mechanism is arranged at the output wheel and comprises a transmission part and a clutch gear meshed with the output wheel, the transmission part is used for driving the clutch gear to be connected with/separated from the gear reduction assembly, and the gear reduction assembly is connected with an elastic piece. The quick-closing ball valve of the gas meter drives the valve core to be closed through the elastic piece, the valve closing is quick, the requirement of quick cutting off of the valve under emergency condition is met, and the valve closing is reliable.

Description

Quick-closing ball valve of gas meter

Technical Field

The utility model relates to the field of gas meter valves, in particular to a gas meter quick-closing ball valve.

Background

The intelligent gas meter generally adopts a motor ball valve as an actuating mechanism to control the opening and closing of the gas meter. The existing intelligent gas meter motor ball valve generally adopts a slow-closing type structure, and a motor shaft drives the valve ball to rotate at a slow speed after being decelerated by a gear reduction assembly so as to realize the function of closing the ball valve; when the slow-closing motor valve is used for closing the valve, the valve can not meet the requirement of quick cutting-off of the valve in emergency due to slow action, so that the valve is not reliably closed.

Disclosure of Invention

First, the technical problem to be solved

The utility model aims to solve the problem of providing the quick-closing ball valve of the gas meter, which drives the valve core to be closed through the elastic piece, and the valve closing is quick, so that the requirement of quick cutting off of the valve under emergency conditions is met, and the valve closing is reliable.

(II) technical scheme

In order to solve the technical problems, the utility model provides a gas meter quick-closing ball valve, which comprises: the gas meter comprises a shell, wherein a motor, a gas channel, a valve core and a valve rod connected with the valve core are arranged on the shell, the valve core is arranged in the gas channel and is used for opening/closing the gas channel, one end of the gas channel is communicated with a gas inlet pipe, and the other end of the gas channel is communicated with an inner cavity of the gas meter; a gear reduction assembly is arranged between an output wheel of the motor and the valve rod, a clutch mechanism is arranged at the output wheel, the clutch mechanism comprises a transmission part and a clutch gear meshed with the output wheel, the transmission part is used for driving the clutch gear to be connected with/separated from the gear reduction assembly, and the gear reduction assembly is connected with an elastic piece; when the fuel gas channel is opened, the motor drives the output wheel to rotate positively, the clutch gear is driven by the transmission part to be meshed with the input gear of the gear reduction assembly, so as to drive the valve rod and the valve core to rotate and open, and at the moment, the gear reduction assembly rotates positively and drives the elastic piece to store elastic potential energy; when the gas channel is closed, the output wheel reversely rotates, the clutch gear is driven by the transmission part to be separated from the input gear of the gear reduction assembly, and at the moment, the elastic piece releases elastic potential energy to drive the gear reduction assembly to reversely rotate so as to drive the valve core to be rapidly closed; the quick-closing ball valve of the gas meter drives the valve core to be closed through the elastic piece, the valve closing is quick, the requirement of quick cutting off of the valve under emergency condition is met, and the valve closing is reliable.

Further, the elastic piece is a coil spring, one end of the elastic piece is connected with the gear reduction assembly, and the other end of the elastic piece is connected with the shell.

Further, the gear reduction assembly comprises an input gear, an output gear and an intermediate gear connected between the input gear and the output gear, the transmission part is used for driving the clutch gear to be connected with/separated from the input gear, the output gear is connected with the valve rod, one end of the elastic piece is connected with the intermediate gear, and the other end of the elastic piece is connected with the shell.

Further, a clamping groove is formed in the intermediate gear, a protrusion is arranged on the shell, one end of the elastic piece is clamped with the clamping groove, a clamping ring corresponding to the protrusion is arranged at the other end of the elastic piece, and the protrusion is arranged in the clamping ring to limit.

Further, the input gear comprises a first gear and a second gear, the first gear is arranged on the upper side of the second gear, the number of teeth of the first gear is smaller than that of the second gear, and the transmission part is used for driving the clutch gear to be connected with/separated from the second gear; the intermediate gear is integrally formed and comprises a third gear and a fourth gear, the third gear is arranged on the upper side of the fourth gear, the number of teeth of the third gear is larger than that of teeth of the fourth gear, the third gear is meshed with the first gear, the fourth gear is meshed with the output gear, and the number of teeth of the output gear is larger than that of teeth of the fourth gear.

Further, the intermediate gear comprises a gear piece, a gear shaft, a gasket and a spring gasket, wherein the gear shaft is rotatably sleeved on the inner side of the gear piece, and the gear piece is tightly pressed between the gasket and the spring gasket.

Further, the clutch mechanism further comprises a ratchet wheel and a pawl piece matched with the ratchet wheel, the pawl piece is fixedly connected with the output wheel of the motor, the ratchet wheel is sleeved on the outer side of the pawl piece, and a mounting guide post for rotatably sleeving the clutch gear is eccentrically arranged on the ratchet wheel.

Further, the pawl comprises a body and a plurality of pawls integrally formed with the body, and deformation gaps for elastic deformation of the pawls are formed between the pawls and the body.

Further, a gear reduction box is connected between the output wheel and a motor shaft of the motor, and the gear reduction box comprises a plurality of meshed transmission gears.

Further, the fuel gas channel is communicated in a straight line direction, and the valve core is a hemispherical valve core.

(III) beneficial effects

According to the quick-closing ball valve for the gas meter, the valve core is driven to be closed through the elastic piece, so that the valve is quickly closed, the requirement of quick cutting off of the valve under emergency conditions is met, and the valve is reliable to close; the middle gear is provided with a clamping groove, the shell is provided with a bulge, one end of the elastic piece is clamped with the clamping groove, the other end of the elastic piece is provided with a clamping ring corresponding to the bulge, the bulge is arranged in the clamping ring to limit, and the elastic piece is stably installed and is not easy to fall off; the gear transmission with a plurality of different teeth numbers realizes the function of speed reduction, the function of small current valve opening of the motor and reliable use; when the valve is closed, the motor rotates reversely, the output wheel drives the pawl and the ratchet wheel to rotate synchronously, so as to drive the clutch gear to swing and separate from the input gear, the elastic piece releases elastic potential energy at the moment that the clutch gear is separated from the input gear, and the valve core is driven to rotate rapidly and close through the intermediate gear and the output gear, so that the action response is quick, and the valve closing is reliable; the gas channel is communicated in the straight line direction, and compared with a non-straight line channel such as a right angle, the gas channel has small gas pressure loss; the valve core is a hemispherical valve core, and the rotation force required by the valve rod during valve opening is small, so that the motor can realize valve opening action with smaller current.

Drawings

FIG. 1 is a perspective view of a gas meter quick-closing ball valve of the utility model;

FIG. 2 is a schematic diagram of the structure of the bump of the quick-closing ball valve of the gas meter;

FIG. 3 is a schematic diagram of the gear reduction set of the quick-closing ball valve of the gas meter;

FIG. 4 is a top view of the clutching mechanism portion of the quick-closing ball valve of the gas meter of the present utility model;

FIG. 5 is a schematic diagram of the intermediate gear part of the quick-closing ball valve of the gas meter;

FIG. 6 is a schematic diagram of the structure of the transmission gear part of the quick-closing ball valve of the gas meter;

FIG. 7 is a perspective view of a second intermediate gear of the embodiment of the quick-closing ball valve of the gas meter of the utility model;

FIG. 8 is a cross-sectional view of a second intermediate gear of the embodiment of the quick-closing ball valve of the gas meter of the present utility model;

the corresponding component names for each reference number in the figures are: 1 is a housing, 101 is a boss, 102 is a stopper, 2 is a motor, 201 is a motor shaft, 21 is an output wheel, 3 is a gas passage, 4 is a valve core, 5 is a valve rod, 6 is a clutch gear, 7 is an elastic member, 701 is a snap ring, 81 is an input gear, 811 is a first gear, 812 is a second gear, 82 is an output gear, 83 is an intermediate gear, 831 is a clamping groove, 832 is a third gear, 833 is a fourth gear, 834 is a gear member, 835 is a gear shaft, 836 is a gasket, 837 is a spring gasket, 91 is a ratchet wheel, 911 is a mounting guide post, 92 is a pawl member, 921 is a body, 922 is a pawl, 923 is a deformation gap, 10 is a gear reduction box, 11 is a transmission gear, 111 is a first transmission gear, 112 is a second transmission gear, and 113 is a third transmission gear.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

Embodiment one:

referring to fig. 1-6, a first embodiment of the present utility model provides a gas meter quick-closing ball valve, comprising: the gas meter comprises a shell 1, wherein a motor 2, a gas channel 3, a valve core 4 and a valve rod 5 connected with the valve core 4 are arranged on the shell 1, the valve core 4 is arranged in the gas channel 3 and is used for opening/closing the gas channel 3, one end of the gas channel 3 is communicated with a gas inlet pipe, and the other end of the gas channel 3 is communicated with an inner cavity of the gas meter; a gear reduction assembly is arranged between the output wheel 21 of the motor 2 and the valve rod 5, a clutch mechanism is arranged at the output wheel 21 and comprises a transmission part and a clutch gear 6 meshed with the output wheel 21, the transmission part is used for driving the clutch gear 6 to be connected with/separated from the gear reduction assembly, and the gear reduction assembly is connected with an elastic piece 7; when the fuel gas channel 3 is opened, the motor 2 drives the output wheel 21 to rotate positively, and the clutch gear 6 is driven by the transmission part to be meshed with the input gear of the gear reduction assembly so as to drive the valve rod 5 and the valve core 4 to rotate and open, and at the moment, the gear reduction assembly rotates positively and drives the elastic piece 7 to store elastic potential energy; when the gas channel 3 is closed, the output wheel 21 reversely rotates, the clutch gear 6 is driven by the transmission part to be separated from the input gear of the gear reduction assembly, at the moment, the elastic piece 7 releases elastic potential energy, and the gear reduction assembly is driven to reversely rotate so as to drive the valve core 4 to be rapidly closed; the quick-closing ball valve of the gas meter drives the valve core to be closed through the elastic piece, the valve closing is quick, the requirement of quick cutting off of the valve under emergency condition is met, and the valve closing is reliable.

Referring to fig. 2-5, the elastic member 7 is a coil spring, one end of the elastic member 7 is connected with one of the gears of the gear reduction assembly, and the other end of the elastic member 7 is connected with the housing 1, so that the elastic member 7 can be linked when the gear reduction assembly rotates; the gear reduction assembly includes an input gear 81, an output gear 82, and an intermediate gear 83 connected between the input gear 81 and the output gear 82, and the intermediate gear 83 of the present embodiment is provided as one or a plurality of intermediate gears; the transmission part is used for driving the clutch gear 6 to be connected with/separated from the input gear 81, the output gear 82 is connected with the valve rod 5 to drive the valve rod 5 to rotate, one end of the elastic piece 7 is connected with the intermediate gear 83, and the other end of the elastic piece 7 is connected with the shell 1; the middle gear 83 is provided with a straight-line clamping groove 831, the shell 1 is provided with a protrusion 101, one end of the elastic element 7 is clamped with the clamping groove 831, the other end of the elastic element 7 is provided with a clamping ring 701 corresponding to the protrusion 101, the protrusion 101 is arranged in the clamping ring 701 to limit, and the elastic element 7 is stably installed and is not easy to fall off; the input gear 81 comprises a first gear 811 and a second gear 812 which coaxially rotate, the first gear 811 is arranged on the upper side of the second gear 812, the number of teeth of the first gear 811 is smaller than that of the second gear 812, and the transmission part is used for driving the clutch gear 6 to be connected with/separated from the second gear 812; the intermediate gear 83 is integrated into one piece and includes coaxial rotatory third gear 832 and fourth gear 833, and third gear 832 is arranged in fourth gear 833 upside, and third gear 832 number of teeth is greater than fourth gear 833 number of teeth, and third gear 832 and first gear 811 meshing, fourth gear 833 and output gear 82 meshing, the number of teeth of output gear 82 are greater than fourth gear 833 number of teeth, through the gear drive of a plurality of different numbers of teeth, realize the function of slowing down, realize motor 2 small current valve opening function, use reliably.

Referring to fig. 3, 4 and 6, the clutch mechanism further includes a ratchet 91 and a pawl 92 engaged with the ratchet 91, the pawl 92 is fixedly connected with the output wheel 21 of the motor 2, the pawl 92 is disposed on the upper side of the output wheel 21, and the output wheel 21 and the pawl 92 rotate coaxially; the ratchet wheel 91 is sleeved outside the pawl 92, a cylindrical mounting guide column 911 for rotationally sleeving the clutch gear 6 is eccentrically arranged on the ratchet wheel 91, the mounting guide column 911 is arranged at the lower side of the ratchet wheel 91, and the clutch gear 6 can rotate around the axis of the mounting guide column 911; the pawl 92 comprises a body 921 and a plurality of pawls 922 integrally formed with the body 921, wherein the pawls 922 are provided with four pawls 922 and are distributed in an annular equidistant manner in the embodiment; a deformation gap 923 for elastic deformation of the pawl 922 is formed between the pawl 922 and the body 921, when the valve is opened, the motor 2 rotates positively, the output wheel 21 drives the pawl 92 and the ratchet 91 to rotate synchronously, so that the clutch gear 6 is swung to a position meshed with the input gear 81, at the moment, the output wheel 21 continues to rotate, the ratchet 91 cannot continue to rotate, the pawl 922 correspondingly deforms elastically, so that the pawl 92 continues to rotate relative to the ratchet 91, and the valve core 4 is driven to rotate for 90 degrees to open; when the valve is closed, the motor 2 rotates reversely, the output wheel 21 drives the pawl 92 and the ratchet 91 to rotate synchronously, so that the clutch gear 6 is driven to swing and separate from the input gear 81, the elastic member 7 releases elastic potential energy at the moment that the clutch gear 6 is separated from the input gear 81, and the valve core 4 is driven to rotate for 90 degrees rapidly through the intermediate gear 83 and the output gear 82 to close, so that the valve closing is fast in action response and reliable.

Referring to fig. 4, in a top view, the output wheel 21 rotates clockwise when the valve is opened; the output wheel 21 rotates anticlockwise when the valve is closed; the casing 1 is provided with a stopper 102 for blocking the clutch gear 6, so as to prevent the clutch gear 6 from swinging excessively counterclockwise.

Referring to fig. 3 and 6, a gear reduction box 10 is connected between an output wheel 21 and a motor shaft 201 of a motor 2 to reduce the rotation speed of the motor shaft 201 and increase the power output torque, so that the motor 2 can realize valve opening action with smaller current, and the reliability is improved; the gear reduction box 10 includes a plurality of meshed transmission gears 11, in this embodiment, three transmission gears 11 are provided, and a first transmission gear 111, a second transmission gear 112 and a third transmission gear 113 are sequentially provided along a transmission direction from the motor shaft 201 to the output wheel 21, the first transmission gear 111 is meshed with the motor shaft 201, and the third transmission gear 113 is meshed with the output wheel 21.

Referring to fig. 1, the gas channel 3 is penetrated in a straight line direction, and compared with a non-straight line channel such as a right angle, the gas channel has small gas pressure loss; the valve core 4 is a hemispherical valve core, and the rotation force required by the valve rod during valve opening is small, so that the motor 2 can realize valve opening action with smaller current.

Embodiment two:

referring to fig. 7 and 8, the second embodiment is different from the first embodiment in that: the middle gear 83 is of a split metal riveting structure, the middle gear 83 comprises a gear piece 834, a gear shaft 835, a gasket 836 and a spring gasket 837, the gear piece 834 comprises a third gear 832 and a fourth gear 833, the gear shaft 835 is rotationally sleeved on the inner side of the gear piece 834, and the gear shaft 835 and the gear piece 834 are coaxially arranged and can rotate relatively; the gear piece 834 is tightly pressed between the gasket 836 and the elastic gasket 837, the elastic piece 7 in a loose state is connected between the intermediate gear 83 and the shell 1 during assembly, at the moment, the clamping groove 831 at the upper end of the gear shaft 835 is screwed by a screwdriver, so that the gear shaft 835 rotates relative to the gear piece 834 and the gasket 836, sliding friction occurs between the elastic gasket 837 and the gear piece 834, and the elastic piece 7 is tightly regulated, so that the tightening is convenient; after the tightening is finished and in the valve opening and closing process, the gear piece 834 and the gear shaft 835 do not rotate relatively due to static friction force between the elastic gasket 837 and the gear piece 834, so that the gear is reliable in use and convenient to assemble; the elastic member 7 in the first embodiment needs to be kept in its pre-tightened state before being assembled with the housing 1, and the assembly difficulty is high.

The valve core of the gas meter quick-closing ball valve is a hemispherical valve core, and the rotation force required by the valve rod is small when the valve is opened, so that the valve opening action can be realized by smaller current; the valve core is driven to be closed by the elastic piece, so that the valve is closed rapidly, the requirement of rapidly cutting off the valve in emergency is met, and the valve closing is reliable; the middle gear is provided with a clamping groove, the shell is provided with a bulge, one end of the elastic piece is clamped with the clamping groove, the other end of the elastic piece is provided with a clamping ring corresponding to the bulge, the bulge is arranged in the clamping ring to limit, and the elastic piece is stably installed and is not easy to fall off; the gear transmission with a plurality of different teeth numbers realizes the function of speed reduction, the function of small current valve opening of the motor and reliable use; when the valve is closed, the motor rotates reversely, the output wheel drives the pawl and the ratchet wheel to rotate synchronously, so as to drive the clutch gear to swing and separate from the input gear, the elastic piece releases elastic potential energy at the moment that the clutch gear is separated from the input gear, and the valve core is driven to rotate rapidly and close through the intermediate gear and the output gear, so that the action response is quick, and the valve closing is reliable; the gas channel is communicated along the straight line direction, and compared with a non-straight line channel such as a right angle, the gas channel has small gas pressure loss.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims (10)

1. A gas meter quick-closing ball valve, comprising: the gas-fired valve comprises a shell (1), wherein a motor (2), a gas channel (3), a valve core (4) and a valve rod (5) connected with the valve core (4) are arranged on the shell (1), the valve core (4) is arranged in the gas channel (3) and is used for opening/closing the gas channel (3), a gear reduction assembly is arranged between an output wheel (21) of the motor (2) and the valve rod (5), a clutch mechanism is arranged at the output wheel (21), the clutch mechanism comprises a transmission part and a clutch gear (6) meshed with the output wheel (21), the transmission part is used for driving the clutch gear (6) to be connected with/separated from the gear reduction assembly, and the gear reduction assembly is connected with an elastic piece (7); when the fuel gas channel (3) is opened, the output wheel (21) rotates positively, the clutch gear (6) is driven by the transmission part to be connected with the gear reduction assembly so as to drive the valve core (4) to be opened, and the elastic piece (7) stores elastic potential energy; when the gas channel (3) is closed, the output wheel (21) reversely rotates, the clutch gear (6) is driven by the transmission part to be separated from the gear reduction assembly, and the elastic piece (7) releases elastic potential energy to drive the valve core (4) to be closed rapidly.

2. The gas meter quick-closing ball valve according to claim 1, wherein the elastic member (7) is a coil spring, one end of the elastic member (7) is connected with the gear reduction assembly, and the other end of the elastic member (7) is connected with the housing (1).

3. The gas meter quick-closing ball valve according to claim 1, wherein the gear reduction assembly comprises an input gear (81), an output gear (82) and an intermediate gear (83) connected between the input gear (81) and the output gear (82), the transmission part is used for driving the clutch gear (6) to be connected with/separated from the input gear (81), the output gear (82) is connected with the valve rod (5), and one end of the elastic piece (7) is connected with the intermediate gear (83).

4. A gas meter quick-closing ball valve according to claim 3, wherein a clamping groove (831) is formed in the intermediate gear (83), a protrusion (101) is formed in the housing (1), one end of the elastic member (7) is clamped with the clamping groove (831), a clamping ring (701) corresponding to the protrusion (101) is arranged at the other end of the elastic member (7), and the protrusion (101) is arranged in the clamping ring (701) to limit.

5. A gas meter quick-closing ball valve according to claim 3, wherein the input gear (81) comprises a first gear (811) and a second gear (812), the first gear (811) is arranged on the upper side of the second gear (812), the number of teeth of the first gear (811) is smaller than that of the second gear (812), and the transmission part is used for driving the clutch gear (6) to be connected with/separated from the second gear (812); the intermediate gear (83) comprises a third gear (832) and a fourth gear (833), the third gear (832) is arranged on the upper side of the fourth gear (833), the number of teeth of the third gear (832) is larger than that of the fourth gear (833), the third gear (832) is meshed with the first gear (811), the fourth gear (833) is meshed with the output gear (82), and the number of teeth of the output gear (82) is larger than that of the fourth gear (833).

6. A gas meter quick closing ball valve as claimed in claim 3, wherein said intermediate gear (83) comprises a gear member (834), a gear shaft (835), a spacer (836) and a spring spacer (837), said gear shaft (835) being rotatably mounted inside said gear member (834), said gear member (834) being compressed between said spacer (836) and said spring spacer (837).

7. The gas meter quick-closing ball valve according to claim 1, wherein the clutch mechanism further comprises a ratchet wheel (91) and a pawl piece (92) matched with the ratchet wheel (91), the pawl piece (92) is fixedly connected with the output wheel (21) of the motor (2), the ratchet wheel (91) is sleeved on the outer side of the pawl piece (92), and a mounting guide pillar (911) for rotatably sleeving the clutch gear (6) is eccentrically arranged on the ratchet wheel (91).

8. The gas meter quick-closing ball valve according to claim 7, wherein the pawl member (92) comprises a body (921) and a plurality of pawls (922) integrally formed with the body (921), and deformation gaps (923) for elastically deforming the pawls (922) are formed between the pawls (922) and the body (921).

9. The gas meter quick-closing ball valve according to claim 1, wherein a gear reduction box (10) is connected between the output wheel (21) and a motor shaft (201) of the motor (2), and the gear reduction box (10) comprises a plurality of meshed transmission gears (11).

10. The gas meter quick-closing ball valve according to any one of claims 1-9, wherein the gas channel (3) is through in a straight line direction, and the valve core (4) is a hemispherical valve core.