CN201401519Y - Gas control valve unit for rotary membrane type gas meters - Google Patents
Gas control valve unit for rotary membrane type gas meters Download PDFInfo
- Publication number
- CN201401519Y CN201401519Y CN2009200203513U CN200920020351U CN201401519Y CN 201401519 Y CN201401519 Y CN 201401519Y CN 2009200203513 U CN2009200203513 U CN 2009200203513U CN 200920020351 U CN200920020351 U CN 200920020351U CN 201401519 Y CN201401519 Y CN 201401519Y
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- shaft
- positioning
- gear
- valve gap
- valve
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Abstract
The utility model relates to a gas control valve unit for rotary membrane type gas meters, which comprises a valve seat, a valve cap, a positioning part, a driving part and a gear support, the valve seat is hermetically fixed on a core shell, the valve cap is rotatably matched with the valve seat, the gear support is assembled on the core shell, the driving part consists of a driving gear, a driving shaft and a shifting shaft, the driving shaft and the shifting shaft are eccentrically positioned on both ends of the driving gear, and the shifting shaft is positioned in a shifting socket of thevalve cap. The unit is characterized in that the valve cap is provided with a positioning counter bore, the upper support body of the gear support is provided with a positioning through hole, the positioning part consists of a first positioning shaft and a second positioning shaft which are positioned between the driving gear and the shifting shaft and sequentially arranged coaxial with the driving gear, the first positioning shaft is assembled in the positioning through hole of the gear support, the lower end surface of the first positioning shaft axially limits the valve cap, the second positioning shaft is assembled in the positioning counter bore of the valve cap, and the valve cap rotates around the second positioning shaft, and is radially limited by the second positioning shaft. Theutility model has the advantages that the structure is simple, the parts can be easily machined, and the metering precision of a gas meter is high.
Description
Technical field
The utility model relates to a kind of gate valve or guiding valve that rotary type closure member, closure member have flat sealing surface that have, especially a kind of air control valve door device that is applicable to the revolution diaphragm gas meter.
Background technique
As everyone knows, the core section of diaphragm gas meter is made up of core housing, diaphragm measuring room, air control valve door device, link gear driving mechanism, and wherein the air control valve door device is made up of valve gap, valve seat, locating piece and driving component.And diaphragm gas meter is exactly different according to relative movement mode between valve gap and the valve seat, and is divided into slip diaphragm gas meter and revolution diaphragm gas meter.The valve seat of revolution diaphragm gas meter be sealing and fixing on core body, its valve gap is positioned on the valve seat by locating piece, and does rotation motion under the drive of driving component on valve seat, and continuous air inlet and the exhaust that realizes the diaphragm measuring room arranged.Based on the function of above-mentioned valve gap and valve seat, should guarantee to turn round smooth and easy between valve gap and the valve seat, have good air-tightness again.Therefore to keep in the assembly process valve gap on radial and axial spacing accurately, numerous for this reason technician have proposed a plurality of technological schemes.For example: in the CN2418313Y China utility model patent specification of bulletin on February 7 calendar year 2001, disclose a kind of " gas meter changeover valve device ", it is made of valve seat, air intake valve, axle sleeve, central shaft, central shaft is pegged graft with the mandrel in being fixedly mounted on the core housing and is fixedlyed connected, valve base sealing is fixedly connected on core shell upper end, axle sleeve is inserted in the center hole of valve, and the endoporus sleeve of axle sleeve is on central shaft, and groove or the shaft shoulder decometer groove offered on the underpart of axle sleeve is provided with inside barb or flange and central shaft cooperate.It is by the axial float of central shaft restriction axle sleeve, and valve had both guaranteed by axle sleeve restrictive axial play that the rotation of valve was flexible, again operative constraint the axial position of valve.And for example: at the CN2750294Y China utility model patent specification disclosed " axial limiting mechanism of rotary type gas meter slide valve cover and central eccentric gear shaft " of bulletin on January 4th, 2006, it comprise with core body all-in-one-piece slide valve seat on slide valve cover and center eccentricity gear, central shaft and the gear stand of the mutual socket of installing, be equipped with big idle wheel on the gear stand; The wherein mutually slide valve cover of socket and top that the center eccentricity gear is positioned at slide valve seat and around the central shaft rotation, big idle wheel is assemblied in the upper end of gear stand, be meshed with the center eccentricity gear, rotate, and the lower end surface of center eccentricity gear is intervened.It is by big idle wheel lower end surface in the gas meter movement lower end surface of center eccentricity gear to be intervened, stop that the center eccentricity gear is to top offset, the lower end surface of center eccentricity gear stops the slide valve cover of the coaxial below play that makes progress again, makes slide valve cover, center eccentricity gear can reach the purpose of axial limiting again thus when central shaft rotates.Though all valve gap has been kept accurate spacing on it is radial and axial in the above-mentioned disclosed technological scheme.But in such scheme, its central shaft all is to be fixedly mounted in the core housing, its driving component (sleeve of axle sleeve or center eccentricity gear) is to be inserted in the center hole of valve gap, and be socketed on the central shaft, valve gap is rotatably assorted on valve seat, and and driving component together around central shaft rotation, central shaft has played and has connect location core housing, valve seat, valve gap three's effect, make the axial length of central shaft long, the central shaft of this structure with the fixing process of core housing in be prone to crooked, thereby caused valve gap to produce, thereby influenced the measuring accuracy of gas meter, and on core housing and valve gap, to produce the positioning boss of central shaft respectively, increase technology difficulty; Positioning boss has taken the sectional area of blast tube simultaneously, has increased the pressure loss of gas meter.
Summary of the invention
For the preparation process difficulty of the central shaft assembly technology that overcomes gas meter in the prior art and component big, influenced the deficiency of the measuring accuracy of gas meter, the air control valve door device of a kind of simple in structure, assembling is easy, part is easy to process revolution diaphragm gas meter of the utility model.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of air control valve door device that turns round diaphragm gas meter, comprise one with the fixing valve seat of core housing seal, one valve gap that is rotatably assorted on valve seat, positioning piece, one driving component and one is assemblied in the gear stand on the core housing, described driving component is by a driving gear and a transmission shaft that is positioned at the driving gear two ends and is provided with this gear off-centre, one shifting shaft is formed, wherein shifting shaft is positioned at the allocating slot of valve gap, the upper frame of described gear stand is positioned at the top of valve gap, it is characterized in that: on described valve gap upper-end surface, be shaped on the location counterbore, location counterbore on corresponding valve gap on the upper frame of described gear stand has positioning through hole, described locating piece is made up of first positioning shaft and second positioning shaft, this first positioning shaft, second positioning shaft is between driving gear and shifting shaft, and with the coaxial successively setting of driving gear, first positioning shaft is matched with in the positioning through hole of gear stand, axial limiting is carried out to valve gap in its lower end surface, second positioning shaft is assemblied in the location counterbore of valve gap upper-end surface, valve gap is stirred around the rotation of second dead axle by shifting shaft, and by first locating piece, second positioning shaft carries out radially spacing.
Described by a driving gear be positioned at the driving gear two ends and make integrated with the locating piece that the eccentric transmission shaft that is provided with of this gear, driving component and first positioning shaft and second positioning shaft that a shifting shaft is formed are formed.
Locating piece of the present utility model is made up of first positioning shaft and second positioning shaft, and successively with the coaxial setting of driving gear, first positioning shaft is matched with in the positioning through hole of gear stand, second positioning shaft is assemblied in the location counterbore of valve gap upper-end surface, valve gap by first positioning shaft and gear stand positioning through hole cooperate and second positioning shaft carries out radially spacing, axial limiting is carried out in lower end surface by first positioning shaft, and the valve gap revolution is steady, reliable operation.Locating piece compared with prior art, the axial length of its positioning shaft shortens, arming distribution transforming shape problem.The utility model also removed the core housing non-and valve gap on positioning boss, the preparation process difficulty of component is little, has increased the sectional area of gas channel simultaneously, has reduced the pressure loss of gas meter, has improved the performance of table.Transmission shaft, driving gear, shifting shaft, first positioning shaft and second positioning shaft can injection moldeds, and part is easy to processing.
The beneficial effects of the utility model are, and are simple in structure, assembling is easy, part is easy to processing, the measuring accuracy height of gas meter.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further.
Accompanying drawing is a kind of structure master's sectional view of the present utility model.
1. core housings among the figure, 2. valve seat, 3. valve gap, 301. allocating slots, 302. location counterbores, 4. gear stand, 401. upper frames, 402. positioning through hole, 501. driving gears, 502. connected bodies, 503. transmission shaft, 504. connected bodies, 505. shifting shafts, 601. first positioning shafts, 602. second positioning shafts.
Embodiment
As shown in drawings, a kind of air control valve door device that turns round diaphragm gas meter comprises a valve seat 2.This valve seat 2 is by the top of sealer sealing and fixing at core housing 1.
The utility model also comprises a valve gap 3.As shown in drawings, this valve gap 3 is to be rotatably assorted on valve seat 2, has flat sealing surface between valve gap 3 and the valve seat 2.In the accompanying drawings, on the upper-end surface of valve gap 2, be shaped on the location counterbore 302 of non-perforation valve gap end face, be shaped on allocating slot 301 in the side end face of valve gap 2.
The utility model also comprises a gear stand 4.This gear stand 4 fixedly is assemblied on the core housing 1 by set screw.As shown in drawings, the upper frame 401 of gear stand 1 is positioned at the top of valve gap 3, and the location counterbore 302 on the corresponding valve gap 3 has positioning through hole 402 on the support body 401 thereon.
The utility model also comprises a driving component.As shown in drawings, this driving component is made up of a driving gear 501 and the transmission shaft 503, the shifting shaft 505 that are positioned at driving gear 501 two ends, its transmission shaft 503 is positioned at the upper end of driving gear 501 and by a connected body 502 and 501 eccentric connections of driving gear, shifting shaft 505 is positioned at the lower end of driving gear 501.Wherein transmission shaft 503 can be carried out with the link gear driving mechanism (not providing among the figure) of gas meter movement part and be in transmission connection, and shifting shaft 505 is assemblied in the allocating slot 301 of valve gap 3.
The utility model also comprises positioning piece.As shown in drawings, this locating piece is made up of first positioning shaft 601 and second positioning shaft 602, this first positioning shaft 601, second positioning shaft 602 are between driving gear 501 and shifting shaft 505, and successively with driving gear 501 coaxial settings, shifting shaft 505 is realized eccentric the connection by a connected body 504 and first positioning shaft 601.
In order component easily to be realized process and to be reduced assembly technology between component, transmission shaft 503, connected body 502, driving gear 501, first positioning shaft 601, second positioning shaft 602, connected body 504 and 505 injection moldeds of shifting shaft.
In the accompanying drawings, first positioning shaft 601 is matched with in the positioning through hole 402 of gear stand 4, and its lower end surface is pressed against the upper-end surface of valve gap 3, and valve gap 3 is carried out axial limiting.Second positioning shaft 602 is assemblied in the location counterbore 302 of valve gap 3 upper-end surfaces, valve gap 3 is stirred around the rotation of second dead axle 602 by shifting shaft 505, and by reach first positioning shaft 601 and cooperating of gear stand positioning through hole 402 under the effect of second positioning shaft 602, carry out radially spacing.
During the gas meter movement running, driving gear 501 is carried out with the link gear driving mechanism of core section through transmission shaft 503 and is in transmission connection, and stirs valve gap 3 around 602 rotations of second positioning shaft with the shifting shaft 505 that driving gear 501 is wholely set.Valve gap 3 has prevented its play diametrically under the cooperation of first positioning shaft 601 and gear stand positioning through hole 402 and under the effect of second positioning shaft 602, valve gap 3 has been realized radially spacing.The lower end surface of first positioning shaft 601 is pressed on the upper-end surface of valve gap 3, has stopped the play that valve gap 3 makes progress, and has reached the purpose of valve gap 3 axial limitings.Valve gap 3 on radial and axial spacing accurately, revolution steadily, reliable operation has improved the measuring accuracy of gas meter.
Need to prove: above embodiment is only in order to the explanation the technical solution of the utility model.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, can also make amendment or be equal to replacement the utility model, it all should fall into protection domain of the present utility model.
Claims (2)
1, a kind of air control valve door device that turns round diaphragm gas meter, comprise one with the fixing valve seat of core housing seal, one valve gap that is rotatably assorted on valve seat, positioning piece, one driving component and one is assemblied in the gear stand on the core housing, described driving component is by a driving gear and a transmission shaft that is positioned at the driving gear two ends and is provided with this gear off-centre, one shifting shaft is formed, wherein shifting shaft is positioned at the allocating slot of valve gap, the upper frame of described gear stand is positioned at the top of valve gap, it is characterized in that: on described valve gap upper-end surface, be shaped on the location counterbore, location counterbore on corresponding valve gap on the upper frame of described gear stand has positioning through hole, described locating piece is made up of first positioning shaft and second positioning shaft, this first positioning shaft, second positioning shaft is between driving gear and shifting shaft, and with the coaxial successively setting of driving gear, first positioning shaft is matched with in the positioning through hole of gear stand, axial limiting is carried out to valve gap in its lower end surface, second positioning shaft is assemblied in the location counterbore of valve gap upper-end surface, valve gap is stirred around the rotation of second dead axle by shifting shaft, and by first locating piece, second positioning shaft carries out radially spacing.
2, a kind of air control valve door device that turns round diaphragm gas meter according to claim 1 is characterized in that: described by a driving gear be positioned at the driving gear two ends and make integrated with the locating piece that the eccentric transmission shaft that is provided with of this gear, driving component and first positioning shaft and second positioning shaft that a shifting shaft is formed are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200203513U CN201401519Y (en) | 2009-04-01 | 2009-04-01 | Gas control valve unit for rotary membrane type gas meters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200203513U CN201401519Y (en) | 2009-04-01 | 2009-04-01 | Gas control valve unit for rotary membrane type gas meters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201401519Y true CN201401519Y (en) | 2010-02-10 |
Family
ID=41661316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200203513U Expired - Lifetime CN201401519Y (en) | 2009-04-01 | 2009-04-01 | Gas control valve unit for rotary membrane type gas meters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201401519Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539207A (en) * | 2009-04-01 | 2009-09-23 | 荣成市宇翔实业有限公司 | Gas control valve device of revolution film type fuel gas meter |
| CN113029445A (en) * | 2019-12-24 | 2021-06-25 | 沈阳新松机器人自动化股份有限公司 | Gas table core reveals accredited testing organization |
-
2009
- 2009-04-01 CN CN2009200203513U patent/CN201401519Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539207A (en) * | 2009-04-01 | 2009-09-23 | 荣成市宇翔实业有限公司 | Gas control valve device of revolution film type fuel gas meter |
| CN113029445A (en) * | 2019-12-24 | 2021-06-25 | 沈阳新松机器人自动化股份有限公司 | Gas table core reveals accredited testing organization |
| CN113029445B (en) * | 2019-12-24 | 2022-05-17 | 沈阳新松机器人自动化股份有限公司 | Gas table core reveals accredited testing organization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100210 |
|
| CX01 | Expiry of patent term |