CN203730849U - Direct acting reducing valve - Google Patents
Direct acting reducing valve Download PDFInfo
- Publication number
- CN203730849U CN203730849U CN201420031088.9U CN201420031088U CN203730849U CN 203730849 U CN203730849 U CN 203730849U CN 201420031088 U CN201420031088 U CN 201420031088U CN 203730849 U CN203730849 U CN 203730849U
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- China
- Prior art keywords
- valve body
- valve
- piston
- main spring
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 210000004907 gland Anatomy 0.000 claims abstract description 10
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Abstract
The utility model provides a direct acting reducing valve. The direct acting reducing valve comprises a hand wheel, a threaded rod, a sleeve, a main spring base, a main spring, a piston, a valve body, ejector rods, a main valve body, an auxiliary spring base, an auxiliary spring and a gland. An air inlet through hole communicated with an air inlet connector and an air outlet connector is formed in an inner cavity of the valve body. The two ejector rods are both located below the piston and are symmetrically arranged along the longitudinal center line of the valve body. The auxiliary spring base is arranged on the main valve body in an ejecting mode. The auxiliary spring is supported between the auxiliary spring base and the gland. The top portion of the main valve body is tightly pressed and sealed at the position of the air inlet through hole. The bottom of the sleeve is connected with the upper portion of the valve body. The main spring is supported between the main spring base and the piston. The threaded rod is connected with the sleeve. The upper portion of the threaded rod is connected with the hand wheel. The bottom of the threaded rod is pressed on the main spring base. A longitudinal through hole is formed in the inner cavity of the valve body. The top of each ejector rod is connected with the piston in an interference fit mode. The bottom of each ejector rod penetrates through the longitudinal through hole and then is tightly attached to the top of the main valve body. According to the direct acting reducing valve, the structure is compact, guiding is not needed when the ejector rods conduct reciprocating movement, when the ejector rods push the main valve body, it can be guaranteed that the main valve body can be evenly opened, and inclination of the main valve body is avoided.
Description
Technical field:
The utility model relates to a kind of valve, is specifically that a kind of being arranged on carried on the pipeline of gas, for the pressure of source of the gas being reduced pressure and being stabilized to the Direct acting reducing valve of a definite value.
Background technique:
So-called Direct acting reducing valve refers to that the opening direction of valve is identical with the flow direction of air-flow, there is in the market a kind of Direct acting reducing valve, when its work, mainly rely on piston to promote two push rods and open valve, two push rods are all positioned at piston below and are symmetrical arranged along the vertical center line of valve body, push rod bottom is arranged in the cooperation through hole that body cavity has, in the time that moving up and down, push rod leads by this cooperation through hole, for accurate guiding, coordinate the machining accuracy of through hole and push rod generally all to require higher, and in actual production process, this precision is difficult for ensureing, in addition, the length of two push rods add be difficult to man-hour accomplish in full accord, be subject to the impact of above-mentioned two kinds of factors, piston often there will be valve to be pushed up inclined to one side phenomenon by push rod in the time that two push rods of promotion are opened valve, the valve of deflection sometimes still can be in deflected condition after reset, cause the sealability of valve to decline, cause gas leakage.
Model utility content:
The technical problems to be solved in the utility model is, a kind of compact structure is provided, and in the time of push rod to-and-fro motion, without guiding, and in the time that push rod promotes valve, can ensure that valve is evenly backed down, and avoids the Direct acting reducing valve of valve generation deflection.
Technical solution of the present utility model is, provide a kind of Direct acting reducing valve with following structure: comprise handwheel, screw rod, sleeve, main spring seat, main spring, piston, valve body, push rod, valve, auxiliary spring seat, auxiliary spring and be connected to the gland of valve body bottom, valve body is provided with intake interface and the interface of giving vent to anger, in body cavity, have the air inlet through hole that is communicated with intake interface and the interface of giving vent to anger, push rod has two and be all arranged in body cavity, two push rods are all positioned at piston below and are symmetrical arranged along the vertical center line of valve body, valve is positioned at body cavity bottom, auxiliary spring seat withstands on valve, auxiliary spring withstands between auxiliary spring seat and gland, valve top compression seal is in air inlet through hole, piston can slide up and down and be connected with body cavity, sleeve bottom is connected with valve body top, main spring seat and main spring are all arranged in barrel bore, main spring withstands between main spring seat and piston, screw rod is connected with bush whorl, screw rod top is connected with handwheel, screw rod bottom is pressed on main spring seat through after sleeve, wherein, in body cavity, have the longitudinal hole that two push rods of two confessions pass respectively, two push rod tops are all connected with piston interference fit, two push rod bottoms are close to valve top surface through after longitudinal hole.
Direct acting reducing valve described in the utility model, wherein, screw rod bottom is provided with the first cone boss, main spring seat top is provided with the first taper shrinkage pool inserting for the first cone boss, auxiliary spring seat top is provided with the second cone boss, and valve is provided with the second taper shrinkage pool inserting for the second cone boss.
Adopt after above structure, compared with prior art, the utility model Direct acting reducing valve has the following advantages: be difficult to accomplish in full accord with the length of two push rods in prior art Direct acting reducing valve, and it is different in the time of its to-and-fro motion, to need again to coordinate through hole to lead, the utility model is connected the top of two push rods with piston interference fit, make it after assembling, become as a whole, in the time of the length of following process push rod, direct labor can take them together on grinding machine and grinding be carried out in the bottom of two push rods simultaneously, the bottom grinding of two push rods is equally flat the most at last, the length that has ensured two push rods is consistent, in the time of its work, just valve evenly can be backed down, avoid valve generation deflection, just because two push rod tops are connected with piston interference fit, in the time of push rod to-and-fro motion, also just do not need original cooperation through hole to lead, the utility model Direct acting reducing valve changes original cooperation through hole only for two longitudinal holes that push rod passes into, like this, in the time of processing push rod and longitudinal hole, just do not have degree of precision to require yet.
The first cone boss can be adjusted main spring Zuo center automatically with coordinating of the first taper shrinkage pool, and this can guarantee all the time that thrust is delivered on main spring reposefully in the time that screw rod presses down main spring seat; The center that can automatically adjust valve that coordinates of the second cone boss and the second taper shrinkage pool, ensures the perpendicularity of valve top surface and valve body vertical center line, has further improved the sealability of valve.
Brief description of the drawings:
Fig. 1 is that the master of the utility model Direct acting reducing valve looks sectional structure schematic diagram.
Embodiment:
Below in conjunction with the drawings and specific embodiments, the utility model Direct acting reducing valve is described in further detail:
As shown in Figure 1, in this embodiment, the utility model Direct acting reducing valve comprises handwheel 2, screw rod 3, sleeve 22, main spring seat 6, main spring 21, piston 7, valve body 8, push rod 20, valve 17, auxiliary spring seat 16, auxiliary spring 14 and be connected to the gland 13 of valve body 8 bottoms, between gland 13 and valve body 8, be provided with packing ring 15, valve body 8 is provided with intake interface 18 and the interface 9 of giving vent to anger, in valve body 8 inner chambers, have the air inlet through hole 10 that is communicated with intake interface 18 and the interface 9 of giving vent to anger, push rod 20 has two and be all arranged in valve body 8 inner chambers, two push rods 20 are all positioned at piston 7 belows and are symmetrical arranged along the vertical center line of valve body 8, valve 17 is positioned at valve body 8 inner chamber bottoms, auxiliary spring seat 16 withstands on valve 17, auxiliary spring seat 16 tops are provided with the second cone boss 12, valve 17 is provided with the second taper shrinkage pool 11 inserting for the second cone boss 12, auxiliary spring 14 withstands between auxiliary spring seat 16 and gland 13, valve 17 top compression seals are at air inlet through hole 10 places, piston 7 can slide up and down and be connected with valve body 8 inner chambers, between piston 7 and valve body 8, be provided with seal ring, in valve body 8 inner chambers, have the longitudinal hole 19 that two push rods 20 of two confessions pass respectively, two push rod 20 tops are all connected with piston 7 interference fit, two push rod 20 bottoms through longitudinal hole 19 after and valve 17 top surfaces be close to, sleeve 22 bottoms are threaded with valve body 8 tops, main spring seat 6 and main spring 21 are all arranged in sleeve 22 inner chambers, main spring 21 withstands between main spring seat 6 and piston 7, screw rod 3 is threaded with sleeve 22, screw rod 3 tops are connected with handwheel 2 by gland nut 23, handwheel 2 tops are connected with handwheel cover 1, screw rod 3 bottoms are pressed on main spring seat 6 through after sleeve 22, screw rod 3 bottoms are provided with the first cone boss 5, main spring seat 6 tops are provided with the first taper shrinkage pool 4 inserting for the first cone boss 5.
The working principle of the utility model Direct acting reducing valve is: as shown in Figure 1, when work, rotation hand wheel 2, screw rod 3 presses down main spring seat 6, main spring seat 6 presses down main spring 21, main spring 21 promotes piston 7 and moves downward, push rod 20 is followed piston 7 and is moved together, valve 17 is evenly backed down by push rod 20, between the boss at valve 17 and air inlet through hole 10 places, form small gap, pressurized gas are by pressure decreased after this small gap, post-decompression gas flows out through the interface 9 of giving vent to anger, in this process, post-decompression gas also acts on the bottom of piston 7, to balance each other with the elastic force of main spring 21.
Above-described embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skill in the art make the technical solution of the utility model, all should fall in the definite protection domain of the utility model claims.
Claims (2)
1. a Direct acting reducing valve, comprise handwheel (2), screw rod (3), sleeve (22), main spring seat (6), main spring (21), piston (7), valve body (8), push rod (20), valve (17), auxiliary spring seat (16), auxiliary spring (14) and be connected to the gland (13) of valve body (8) bottom, valve body (8) is provided with intake interface (18) and the interface of giving vent to anger (9), in valve body (8) inner chamber, have the air inlet through hole (10) that is communicated with intake interface (18) and the interface (9) of giving vent to anger, push rod (20) has two and be all arranged in valve body (8) inner chamber, two push rods (20) are all positioned at piston (7) below and are symmetrical arranged along the vertical center line of valve body (8), valve (17) is positioned at valve body (8) inner chamber bottom, auxiliary spring seat (16) withstands on valve (17), auxiliary spring (14) withstands between auxiliary spring seat (16) and gland (13), valve (17) top compression seal is located at air inlet through hole (10), piston (7) can slide up and down and be connected with valve body (8) inner chamber, sleeve (22) bottom is connected with valve body (8) top, main spring seat (6) and main spring (21) are all arranged in sleeve (22) inner chamber, main spring (21) withstands between main spring seat (6) and piston (7), screw rod (3) is threaded with sleeve (22), screw rod (3) top is connected with handwheel (2), screw rod (3) bottom is pressed on main spring seat (6) through after sleeve (22), it is characterized in that: in described valve body (8) inner chamber, have the longitudinal hole (19) that two push rods of two confessions (20) pass respectively, two push rods (20) top is all connected with piston (7) interference fit, longitudinal hole (19) is passed afterwards in two push rods (20) bottom and valve (17) top surface is close to.
2. Direct acting reducing valve according to claim 1, it is characterized in that: described screw rod (3) bottom is provided with the first cone boss (5), described main spring seat (6) top is provided with the first taper shrinkage pool (4) inserting for the first cone boss (5), described auxiliary spring seat (16) top is provided with the second cone boss (12), and described valve (17) is provided with the second taper shrinkage pool (11) inserting for the second cone boss (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420031088.9U CN203730849U (en) | 2014-01-17 | 2014-01-17 | Direct acting reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420031088.9U CN203730849U (en) | 2014-01-17 | 2014-01-17 | Direct acting reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730849U true CN203730849U (en) | 2014-07-23 |
Family
ID=51200924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420031088.9U Expired - Lifetime CN203730849U (en) | 2014-01-17 | 2014-01-17 | Direct acting reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730849U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709018A (en) * | 2018-07-23 | 2018-10-26 | 扬州市泰克管道机械有限公司 | A kind of compact constant supporting spring hanger |
-
2014
- 2014-01-17 CN CN201420031088.9U patent/CN203730849U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709018A (en) * | 2018-07-23 | 2018-10-26 | 扬州市泰克管道机械有限公司 | A kind of compact constant supporting spring hanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: Xiyang village, Shiqi street, Haishu District, Ningbo City, Zhejiang Province Patentee after: NINGBO XINGJIAN SPACE MACHINERY Co.,Ltd. Address before: No. 369, Wanxing Road, Shiqi street, Yinzhou District, Ningbo City, Zhejiang Province Patentee before: NINGBO XINGJIAN SPACE MACHINERY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |