CN213839622U - Rotary valve for gas meter - Google Patents

Rotary valve for gas meter Download PDF

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Publication number
CN213839622U
CN213839622U CN202022750208.9U CN202022750208U CN213839622U CN 213839622 U CN213839622 U CN 213839622U CN 202022750208 U CN202022750208 U CN 202022750208U CN 213839622 U CN213839622 U CN 213839622U
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China
Prior art keywords
valve
vent hole
valve seat
air outlet
rotary valve
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CN202022750208.9U
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Chinese (zh)
Inventor
韦雅玲
黎林
李波
刘琴
李筱雅
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CHONGQING SHANCHENG GAS EQUIPMENT CO LTD
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CHONGQING SHANCHENG GAS EQUIPMENT CO LTD
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Priority to CN202022750208.9U priority Critical patent/CN213839622U/en
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Abstract

The utility model relates to a rotary valve for gas table, include: a valve cover (11) and a valve seat (12); an air outlet (121) is formed in the valve seat (12), and four vent holes (122) are formed in an array surrounding the air outlet (121) at equal intervals; the valve cover (11) is provided with an air inlet (111), an air outlet cavity (112) and a communication cavity (113) communicated with the air outlet cavity (112); along the radial direction of the valve cover (11), the communication cavity (113) is positioned between the air inlet (111) and the air outlet cavity (112), and the air inlet (111) and the air outlet cavity (112) are arranged around the communication cavity (113) at equal intervals; when the valve cover (11) is rotated, the air inlet (111) is communicated with one vent hole (122), and the air outlet cavity (112) is communicated with the other vent hole (122) in a diagonal position. The utility model discloses a working property of rotary valve is stable high-efficient.

Description

Rotary valve for gas meter
Technical Field
The utility model relates to a rotary valve especially relates to a rotary valve for gas table.
Background
The diaphragm gas meter is a metering device for measuring the volume of gas through an inner membrane bin with the interior being flexible; it has the characteristics of accurate measurement, safety, reliability, long service life and the like. In the membrane type gas meter commonly used in China, a rotary valve is a key and important part of the membrane type gas meter. The rotary valve cover makes the air inlet and outlet ports communicated with the four metering chambers on the valve seat alternately open and close through rotary sliding on the valve seat, so that continuous and continuous alternate air inlet and exhaust of the four metering chambers are realized. Further, whether the air intake and exhaust processes are smoothly continuous or not is directly influenced by the rotary valve. Therefore, a rotary valve with a reasonable structure is needed to be designed for the diaphragm gas meter.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a rotary valve for gas table.
In order to realize the above utility model purpose, the utility model provides a rotary valve for gas table, include: a valve cover and a valve seat;
the valve seat is provided with an air outlet, and four vent holes are arranged in an array surrounding the air outlet at equal intervals;
the valve cover is provided with an air inlet, an air outlet cavity and a communicating cavity communicated with the air outlet cavity;
the communicating cavity is positioned between the air inlet and the air outlet cavity along the radial direction of the valve cover, and the air inlet and the air outlet cavity are arranged around the communicating cavity at equal intervals;
and when the valve cover is rotated, the air inlet is communicated with one vent hole, and the air outlet cavity is communicated with the other vent hole in the diagonal position.
According to one aspect of the present invention, a continuous ring is provided outside the valve cover in the radial direction of the valve cover;
and a notch is arranged on the bottom surface of the position of the circular ring corresponding to the air inlet along the axial direction of the valve cover.
According to an aspect of the utility model, follow the circumference of valve gap, the length of breach with the air inlet keeps unanimous at radial outside opening arc length.
According to one aspect of the present invention, a connecting column is disposed in the communicating chamber along the axial direction of the valve cover, and a connecting through hole penetrating through the valve cover is disposed on the connecting column;
the connecting through hole is a tapered hole, and the large-diameter end of the connecting through hole is adjacent to the valve seat.
According to the utility model discloses an aspect, four air vents on the disk seat are respectively: the first vent hole, the second vent hole, the third vent hole and the fourth vent hole;
a first conveying cavity is arranged on the valve seat corresponding to the first vent hole, a second conveying cavity is arranged corresponding to the second vent hole, and a third conveying cavity is arranged corresponding to the third vent hole;
and a limiting bayonet is arranged at the joint position of the outer side of the fourth vent hole and the first conveying cavity.
According to an aspect of the utility model the second carry the chamber with be provided with the locating plate on the lateral wall that the chamber is connected is carried to the third.
According to the utility model discloses an aspect, follows the axial of disk seat, being close to of locating plate one side of disk seat bottom surface is provided with the location breach, just the breach bottom surface of location breach is the inclined plane.
According to one aspect of the present invention, a first guiding plate is disposed on a side wall of the second ventilation hole adjacent to the third ventilation hole;
along the axial direction of the valve seat, one end of the first guide plate adjacent to the bottom surface of the valve seat extends in a bending mode along the direction far away from the side wall.
According to one aspect of the present invention, a second guiding plate is disposed on a side wall of the third ventilation hole adjacent to the second ventilation hole;
one end of the second guide plate adjacent to the bottom surface of the valve seat extends in a direction away from the side wall in a bending manner along the axial direction of the valve seat.
According to an aspect of the present invention, the first guide plate and the second guide plate are symmetrically disposed.
According to the utility model discloses a scheme sets up the ring in the radial outside of valve gap, and it makes the valve gap at ascending intensity in week effectively strengthened to it is favourable to the deformation that restraines the rotary valve, and then is favourable to the gas tightness of guaranteeing the valve gap. Set up the breach in the bottom of ring to the position that the ring that makes the valve gap outside and disk seat counterbalance lean on can constitute a passageway that runs through, thereby has played the effect that supplementary air inlet was admitted air, makes the utility model discloses a stable high efficiency of working property of rotary valve.
According to the utility model discloses a scheme sets up the length of breach in the air inlet and keeps unanimous, makes like this under the circumstances of having guaranteed ring bulk strength, has realized the maximize of air inlet air input, and it is favourable to have higher business turn over gas ability to guarantee to adopt the gas table of this rotary valve.
According to the utility model discloses a scheme is carried the chamber through the corresponding setting in the position of part air vent, makes the air vent be connected more convenient and fast with other structures like this, can effectively guarantee the gas tightness of connection moreover, and is favorable to the gas tightness of guaranteeing whole rotary valve.
According to the utility model discloses a scheme sets up spacing bayonet socket through the position at fourth pore and first transport chamber, has effectively just utilized the vacant space on the disk seat, and then is favorable to reducing the size of whole disk seat.
According to the utility model discloses a scheme through setting up the locating plate, can realize the equipment back, and other structures press to it and realize the fixed of whole rotary valve for whole rotary valve can fix a position fixedly to needs less structure, simple structure, and is with low costs. In addition, the positioning notch is arranged and the bottom surface of the notch is inclined, so that the whole rotary valve can be positioned only by simple-structure lap bearing during installation, and the flexibility of installation and positioning is improved.
According to the utility model discloses a scheme is crooked first deflector and second deflector through the setting of symmetry, can effectively play the effect of leading to gas for gas flow is more smooth, and then more favourable to the efficiency of whole business turn over gas process.
Drawings
Fig. 1 is a structural view schematically showing a rotary valve for a gas meter according to an embodiment of the present invention;
FIG. 2 is a block diagram schematically illustrating a valve seat according to an embodiment of the present invention;
fig. 3 is a structural view schematically illustrating a valve cover according to an embodiment of the present invention;
fig. 4 is a bottom view schematically illustrating a valve cover according to an embodiment of the present invention;
fig. 5 is a bottom view schematically illustrating a valve seat according to an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In describing embodiments of the present invention, the terms "longitudinal," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and other terms are used in an orientation or positional relationship shown in the associated drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, which are not repeated herein, but the present invention is not limited to the following embodiments.
As shown in fig. 1, according to the utility model discloses an embodiment, the utility model discloses a rotary valve for gas table, include: a valve cover 11 and a valve seat 12. In this embodiment, the valve seat 12 is provided with an air outlet 121, and four ventilation holes 122 are provided in an array equally spaced around the air outlet 121. In this embodiment, the outlet 121 is centrally located, surrounded by an annular wall, and connected to the body structure of the valve seat 12 by a connecting plate. In the present embodiment, the vent holes 122 are arranged in an array at equal intervals around the air outlet 121, so that the connecting plate for connecting the surrounding wall constituting the air outlet 121 and the main body structure of the valve seat 12 also defines the respective vent holes 122, that is, the connecting plate and the side wall of the main body structure of the valve seat 12 respectively surround the four vent holes 122. In the present embodiment, the opening areas of the four vent holes 122 are the same.
In the present embodiment, the valve cover 11 is provided with an air inlet 111, an air outlet chamber 112, and a communication chamber 113 communicating with the air outlet chamber 112. In the present embodiment, the communication chamber 113 is located between the inlet port 111 and the outlet chamber 112 in the radial direction of the valve cover 11, and the inlet port 111 and the outlet chamber 112 are disposed at equal intervals around the communication chamber 113. In the present embodiment, the gas inlet 111 penetrates the body of the valve cover 11, thereby allowing gas to pass through the valve cover 11. And the air outlet chamber 112 and the communication chamber 113 are connected chambers projecting in the axial direction on the valve cover 11. In the present embodiment, an opening is formed in a side wall of the communication chamber 113 adjacent to the outlet chamber 112, the communication chamber 113 and the outlet chamber 112 communicate with each other through the opening, and the side wall of the communication chamber 113 adjacent to the inlet port 111 divides the communication chamber 113 and the inlet port 111 to prevent the inlet port 111 from communicating with the communication chamber 113.
In the present embodiment, when the valve cover 11 is rotated, the air inlet 111 communicates with one of the air vents 122, and the air outlet chamber 112 communicates with the other air vent 122 located diagonally.
As shown in fig. 1, according to an embodiment of the present invention, a continuous ring 114 is provided on the outer side of the valve cover 11 in the radial direction of the valve cover 11. In the present embodiment, a notch 114a is provided in the bottom surface of the annular ring 114 at a position corresponding to the intake port 111 in the axial direction of the bonnet 11.
With the above arrangement, the annular ring 114 is provided on the radially outer side of the valve cover, which enables the strength of the valve cover in the circumferential direction to be effectively enhanced, thereby being advantageous in suppressing deformation of the rotary valve and further being advantageous in ensuring the airtightness of the valve cover. Set up the breach in the bottom of ring 114 to the position that the ring that makes the valve gap 11 outside leans on with the disk seat counterbalance can constitute a passageway that runs through, thereby has played the effect that supplementary air inlet 111 admits air, makes the utility model discloses a stable high efficiency of working property of rotary valve.
As shown in fig. 1, according to an embodiment of the present invention, the length of the notch 114a is consistent with the radial outermost opening arc length of the air inlet 111 along the circumferential direction of the valve cover 11.
Through the arrangement, the length of the notch is set to be consistent with that of the air inlet, so that under the condition of ensuring the overall strength of the circular ring, the air inlet amount of the air inlet is maximized, and the rotary valve is favorable for ensuring that the gas meter with the rotary valve has higher air inlet and outlet capacity.
As shown in fig. 1, according to an embodiment of the present invention, a connection post 115 is disposed in the connection cavity 113 along the axial direction of the valve cover 11, and a connection through hole 115a penetrating the valve cover 11 is disposed on the connection post 115. In the present embodiment, the connection through-hole 115a is a tapered hole, the large diameter end of which is adjacent to the valve seat 12.
As shown in fig. 1, according to an embodiment of the present invention, the four air vents 122 on the valve seat 12 are: a first vent hole 122a, a second vent hole 122b, a third vent hole 122c, and a fourth vent hole 122 d. In the present embodiment, the valve seat 12 is provided with a first conveyance chamber 122a1 corresponding to the first vent hole 122a, a second conveyance chamber 122b1 corresponding to the second vent hole 122b, and a third conveyance chamber 122c1 corresponding to the third vent hole 122 c. In the present embodiment, the stopper bayonet 13 is provided at a joint position with the first conveyance chamber 122a1 outside the fourth air vent 122 d.
Through the arrangement, the conveying cavities are correspondingly arranged at the positions of the partial vent holes, so that the vent holes are more convenient and quicker to connect with other structures, the connection air tightness can be effectively ensured, and the rotary valve is favorable for ensuring the air tightness of the whole rotary valve.
In addition, the limiting bayonets are arranged at the positions of the fourth vent hole and the first conveying cavity, so that the vacant space on the valve seat is effectively utilized, and the size reduction of the whole valve seat is facilitated.
As shown in fig. 1, according to an embodiment of the present invention, a positioning plate 14 is disposed on an outer sidewall where the second conveying chamber 122b1 and the third conveying chamber 122c1 are connected. In the present embodiment, the positioning plate 14 is provided with a positioning notch 141 on a side close to the bottom surface of the valve seat 12 in the axial direction of the valve seat 12, and a notch bottom surface 141a of the positioning notch 141 is an inclined surface.
Through setting up the locating plate, can realize the equipment back, other structures press the fixed of realizing whole rotary valve to it for whole rotary valve can fix a position fixedly to needs less structure, simple structure, and is with low costs. In addition, the positioning notch is arranged and the bottom surface of the notch is inclined, so that the whole rotary valve can be positioned only by simple-structure lap bearing during installation, and the flexibility of installation and positioning is improved.
As shown in fig. 1, according to an embodiment of the present invention, a first guide plate 122b2 is disposed on a side wall of the second ventilation hole 122b adjacent to the third ventilation hole 122 c. In the present embodiment, one end of the first guide plate 122b2 adjacent to the bottom surface of the valve seat 12 extends in a curved manner in the axial direction of the valve seat 12 in a direction away from the side wall.
As shown in fig. 1, according to an embodiment of the present invention, a second guide plate 122c2 is disposed on a side wall of the third ventilation hole 122c adjacent to the second ventilation hole 122 b. In the present embodiment, one end of the second guide plate 122c2 adjacent to the bottom surface of the valve seat 12 extends in a curved manner in a direction away from the side wall in the axial direction of the valve seat 12.
As shown in fig. 1, according to an embodiment of the present invention, the first guide plate 122b2 is symmetrically disposed with respect to the second guide plate 122c 2.
Through the arrangement, the first guide plate 122b2 and the second guide plate 122c2 which are bent are symmetrically arranged, so that the gas guide effect can be effectively realized, the gas flows more smoothly, and the efficiency of the whole gas inlet and outlet process is more favorable.
The foregoing is merely exemplary of embodiments of the present invention and reference should be made to the apparatus and structures herein not described in detail as it is known in the art to practice the same in general equipment and general methods.
The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A rotary valve for a gas meter, comprising: a valve cover (11) and a valve seat (12);
an air outlet (121) is formed in the valve seat (12), and four vent holes (122) are formed in an array surrounding the air outlet (121) at equal intervals;
the valve cover (11) is provided with an air inlet (111), an air outlet cavity (112) and a communication cavity (113) communicated with the air outlet cavity (112);
along the radial direction of the valve cover (11), the communication cavity (113) is positioned between the air inlet (111) and the air outlet cavity (112), and the air inlet (111) and the air outlet cavity (112) are arranged around the communication cavity (113) at equal intervals;
when the valve cover (11) is rotated, the air inlet (111) is communicated with one vent hole (122), and the air outlet cavity (112) is communicated with the other vent hole (122) in a diagonal position.
2. Rotary valve for gas meters according to claim 1, characterized in that a continuous ring (114) is arranged on the outside of the valve cover (11) in the radial direction of the valve cover (11);
and a notch (114a) is formed in the bottom surface of the position, corresponding to the air inlet (111), of the circular ring (114) along the axial direction of the valve cover (11).
3. The rotary valve for a gas meter according to claim 2, wherein the length of the notch (114a) is consistent with the outermost opening arc length of the gas inlet (111) in the radial direction in the circumferential direction of the valve cover (11).
4. A rotary valve for a gas meter according to any one of claims 1 to 3, wherein a connecting column (115) is provided in the communication chamber (113) in the axial direction of the valve cover (11), and a connecting through hole (115a) penetrating the valve cover (11) is provided in the connecting column (115);
the connecting through hole (115a) is a tapered hole, and the large-diameter end thereof is adjacent to the valve seat (12).
5. A rotary valve for a gas meter according to any one of claims 1 to 3, wherein the four vent holes (122) on the valve seat (12) are respectively: a first vent hole (122a), a second vent hole (122b), a third vent hole (122c), and a fourth vent hole (122 d);
a first delivery chamber (122a1) is provided in the valve seat (12) so as to correspond to the first vent hole (122a), a second delivery chamber (122b1) is provided so as to correspond to the second vent hole (122b), and a third delivery chamber (122c1) is provided so as to correspond to the third vent hole (122 c);
a limit bayonet (13) is arranged at the joint position of the outer side of the fourth vent hole (122d) and the first conveying cavity (122a 1).
6. The rotary valve for a gas meter according to claim 5, wherein a positioning plate (14) is provided on an outer side wall where the second transfer chamber (122b1) and the third transfer chamber (122c1) are connected.
7. The rotary valve for a gas meter according to claim 6, wherein a positioning notch (141) is provided on a side of the positioning plate (14) close to the bottom surface of the valve seat (12) in the axial direction of the valve seat (12), and a notch bottom surface (141a) of the positioning notch (141) is an inclined surface.
8. The rotary valve for a gas meter according to claim 5, wherein a first guide plate (122b2) is provided on a side wall of the second vent hole (122b) adjacent to the third vent hole (122 c);
one end of the first guide plate (122b2) adjacent to the bottom surface of the valve seat (12) extends in a curved manner in a direction away from the side wall in the axial direction of the valve seat (12).
9. The rotary valve for a gas meter according to claim 8, wherein a second guide plate (122c2) is provided on a side wall of the third vent hole (122c) adjacent to the second vent hole (122 b);
one end of the second guide plate (122c2) adjacent to the bottom surface of the valve seat (12) extends in a direction away from the side wall in the axial direction of the valve seat (12) in a curved manner.
10. The rotary valve for a gas meter according to claim 9, wherein the first guide plate (122b2) and the second guide plate (122c2) are provided symmetrically.
CN202022750208.9U 2020-11-24 2020-11-24 Rotary valve for gas meter Active CN213839622U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022750208.9U CN213839622U (en) 2020-11-24 2020-11-24 Rotary valve for gas meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022750208.9U CN213839622U (en) 2020-11-24 2020-11-24 Rotary valve for gas meter

Publications (1)

Publication Number Publication Date
CN213839622U true CN213839622U (en) 2021-07-30

Family

ID=76990783

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022750208.9U Active CN213839622U (en) 2020-11-24 2020-11-24 Rotary valve for gas meter

Country Status (1)

Country Link
CN (1) CN213839622U (en)

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