CN208442334U - A kind of closed valve core type high-precision pressure regulator - Google Patents
A kind of closed valve core type high-precision pressure regulator Download PDFInfo
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- CN208442334U CN208442334U CN201821142197.2U CN201821142197U CN208442334U CN 208442334 U CN208442334 U CN 208442334U CN 201821142197 U CN201821142197 U CN 201821142197U CN 208442334 U CN208442334 U CN 208442334U
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- film
- regulating member
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Abstract
The utility model discloses a kind of closed valve core type high-precision pressure regulators, it is related to Gas Pressure Regulating Equipment technical field, the utility model includes valve body, inlet chamber is successively offered in valve body, valve port and outlet chamber, the main valve stem moving up and down being provided in valve body right above valve port, valve body upper end is removably connected with regulating member, main valve stem one end is protruded into regulating member, end cap is provided at the top of regulating member, cover internal surrounds plunger shaft, the main valve plug in plunger shaft is connected at the top of main valve stem, end cap inner top is provided with the adjustment spring with main valve plug cooperation, the utility model has structure simple, main valve plug is avoided to contact with the direct of gas, the advantages of long service life.
Description
Technical field
The utility model relates to Gas Pressure Regulating Equipment technical fields, more particularly to a kind of closed valve core type high-precision
Pressure regulator.
Background technique
Gas pressure regulator, governor is commonly called as pressure reducing valve, is to keep outlet gas and changing the gas flow through regulating valve automatically
The equipment of authorized pressure is generally divided into direct acting type and two kinds of indirect acting type.Direct acting type pressure regulator is by measuring cell
(film), transmission parts (main valve stem) and regulating mechanism (valve) composition, gas consumption behind outlet increases or inlet pressure drop
When low, outlet pressure just declines, at this moment by the pressure that connecting pipe reflects make to act on the power on the downside of film less than pouring weight on film (or
Spring) power, film decline, flap moves down also with main valve stem, opens valve greatly, and gas flow increases, outlet pressure recovery
To originally given numerical value, conversely, valve turns down, flow-reduction when the gas consumption reduction or inlet pressure behind outlet increase,
Still outlet pressure is made to be restored, the weight of exit pressure levels available adjustment pouring weight or spring force give.
Moving up and down come between the flap and valve port of control bound bar bottom by main valve stem in existing gas pressure regulator, governor
Gap size, so that outlet side air pressure size is controlled, and main valve plug is generally mounted in valve as the moving component for playing balanced action
On valve, i.e., main valve plug acts directly on main valve plug when coming out from valve port positioned at main valve stem bottom, gas, airflow scouring
Main valve plug causes main valve plug to be prone to wear, and product service life is low, while the intracorporal impurity of gas and dirt are accumulated in main valve plug table
Face causes entire pressure regulator operation insensitive and is not closed completely, is easy to appear failure and causes accident.
Therefore above-mentioned technical problem how is solved, there is very much realistic meaning to those skilled in the art.
Utility model content
The purpose of this utility model is that: it is arranged to solve the main valve plug in existing gas pressure regulator, governor in main valve stem bottom
Directly and air flow contacts, it be easy to cause main valve plug to wear, while the foreign matter in gas accumulates and is easy to cause tune in main valve wicking surface
Depressor is easy to appear the technical issues of failure, and the utility model provides a kind of closed valve core type high-precision pressure regulator.
The utility model specifically uses following technical scheme to achieve the goals above:
A kind of closed valve core type high-precision pressure regulator, including valve body successively offer inlet chamber, valve port and outlet in valve body
Chamber, the main valve stem moving up and down being provided in valve body right above valve port, valve body upper end is removably connected with adjustment portion
Part, main valve stem one end are protruded into regulating member, are provided with end cap at the top of regulating member, cover internal surrounds plunger shaft, main valve stem
Top is connected with the main valve plug in plunger shaft, and end cap inner top is provided with the adjustment spring with main valve plug cooperation.
Further, piston cavity wall be provided with main valve plug cooperation guide sleeve, main valve outer core be provided with a circle with
The sealing ring of guide sleeve contact.
Further, regulating member upper end is connected with pilot valve, and regulating member is internally provided with main film, main film both ends
It is fixed on regulating member, main film upper end is provided with pouring weight on film, and main valve stem passes through pouring weight on main film and film, and main valve stem can
For dismantling connection on main film and film on pouring weight, main valve stem bottom is connected with flap, and outlet chamber, which is connected with, to be protruded into regulating member
Be located at main film below signal pipe.
Further, valve port upper end is provided with the valve port set with flap cooperation.
Further, body base is provided with the cutter for on-off valve port, and cutter includes protruding into the intracorporal position of valve
Cutting valve rod immediately below valve port, valve port lower end are provided with slip guiding sleeve, and slip guiding sleeve side wall offers several to be communicated with inlet chamber
Deflector hole, cutting valve stem top connects the piston valve core that can slide up and down in slip guiding sleeve, cuts off to be wound on valve rod and is located at
Closing spring between piston valve core and valve body.
Working principle: combustion gas enters valve body from inlet chamber, and when passing through valve port, the gap between flap and valve port set enters
Outlet chamber reaches depressurization, and the pressure of outlet chamber is transmitted in regulating member by signal pipe, then pilot valve is cooperated to act on,
Main film is driven to swing up and down, so that main valve stem be driven to move up and down, the gap for covering the flap of main valve stem bottom with valve port is followed
Increase or reduce to ring, thus make the stable gas pressure of outlet chamber in certain fluctuation range, during main valve stem moves up and down, band
Main valve plug at the top of dynamic main valve stem slides up and down in the guide sleeve in plunger shaft, and main valve plug constantly contradicts adjustment spring, in master
Balanced action is played to the movement of main valve stem under spool and adjustment spring collective effect.
The beneficial effects of the utility model are as follows:
1, main valve plug is changed from main valve stem bottom at the top of main valve stem, so that main valve plug is completely cut off gas completely and forms sealed shape
State during main valve stem moves up and down under gas pressure, drives the main valve plug at the top of main valve stem to slide up and down in plunger shaft,
Main valve plug constantly contradicts adjustment spring, plays balance to the movement of main valve stem under main valve plug and adjustment spring collective effect and makees
With while guaranteeing that main valve plug plays balanced action, and directly contacting for main valve plug and gas being avoided that, so as to avoid air-flow
Washing away main valve plug causes main valve plug to be prone to wear, and product service life is low, avoids the intracorporal impurity of gas and dirt is accumulated in master
Spool face and cause the operation of entire pressure regulator insensitive and be not closed completely, reduce the generation of failure.
2, piston cavity wall is provided with the guide sleeve with main valve plug cooperation, and main valve outer core is provided with a circle and guiding is socketed
The sealing ring of touching, main valve plug are slided up and down along guide sleeve inner wall, and the setting of guide sleeve can promote the robust motion of main valve plug,
It avoids main valve plug from directly contacting with piston cavity wall simultaneously, reduces the abrasion to main valve plug, improve service life.
3, body base is provided with the cutter for on-off valve port, and including protruding into, valve is intracorporal to be located at valve port just to cutter
The cutting valve rod of lower section, valve port lower end are provided with slip guiding sleeve, and slip guiding sleeve side wall offers several deflector holes communicated with inlet chamber,
Cutting valve stem top connects the piston valve core that can slide up and down in slip guiding sleeve, cut off be wound on valve rod positioned at piston valve core with
Closing spring between valve body, when blocking valve port by cutter, the executing agency's effect of cutter inside it is lower to be pushed
Valve rod is cut off close to valve port, while the piston valve core for cutting off valve stem top slides in slip guiding sleeve, until piston valve core is by slide guide
Deflector hole blocks on set, closes spring and piston valve core is pushed against on the step in slip guiding sleeve, so that valve port be made to be in envelope
Closed state, closure tightness is good, and cutting is stablized.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of closed valve core type high-precision pressure regulator of the utility model；
Fig. 2 is the partial enlargement structural representation in Fig. 1 at A；
Fig. 3 is the partial enlargement structural representation in Fig. 1 at B.
Appended drawing reference: 1- valve body, 2- inlet chamber, 3- valve port, 4- outlet chamber, 5- main valve stem, 6- regulating member, 7- end cap,
8- plunger shaft, 9- main valve plug, 10- adjustment spring, 11- guide sleeve, 12- sealing ring, 13- main film, pouring weight on 14- film, 15- valve
Valve, 16- signal pipe, 17- valve port set, 18- cutter, 19- cut off valve rod, 20- slip guiding sleeve, 20.1- deflector hole, 21- piston valve
Core, 22- close spring, 23- pilot valve.
Specific embodiment
In order to which those skilled in the art better understand the utility model, with reference to the accompanying drawing with following embodiment to this
Utility model is described in further detail.
Embodiment 1
As shown in Fig. 1 to 3, the present embodiment provides a kind of closed valve core type high-precision pressure regulator, including valve body 1, in valve body 1
Inlet chamber 2, valve port 3 and outlet chamber 4 are successively offered, the master moving up and down being provided with right above valve port 3 in valve body 1
Valve rod 5,1 upper end of valve body are removably connected with regulating member 6, and 5 one end of main valve stem is protruded into regulating member 6,6 top of regulating member
It is provided with end cap 7, plunger shaft 8 is surrounded inside end cap 7, the main valve plug 9 in plunger shaft 8, end cap are connected at the top of main valve stem 5
7 inner tops are provided with the adjustment spring 10 cooperated with main valve plug 9.
In the present embodiment, main valve plug is changed from main valve stem bottom at the top of main valve stem, main valve plug is made to completely cut off gas shape completely
At air-tight state, during main valve stem moves up and down under gas pressure, drive the main valve plug at the top of main valve stem in plunger shaft
It slides up and down, main valve plug constantly contradicts adjustment spring, rises under main valve plug and adjustment spring collective effect to the movement of main valve stem
To balanced action, while guaranteeing that main valve plug plays balanced action, and it is avoided that main valve plug is contacted with the direct of gas, to keep away
Having exempted from airflow scouring main valve plug causes main valve plug to be prone to wear, and product service life is low, avoids the intracorporal impurity of gas and dirt
Accumulate causes entire pressure regulator operation insensitive and is not closed completely in main valve wicking surface, reduces the generation of failure.
Embodiment 2
As shown in Fig. 1 to 2, the present embodiment is to be further optimized on the basis of embodiment 1, specifically, plunger shaft 8
Inner wall is provided with the guide sleeve 11 cooperated with main valve plug 9, and 9 outer wall of main valve plug is provided with the sealing ring that a circle is contacted with guide sleeve 11
12。
In the present embodiment, main valve plug is slided up and down along guide sleeve inner wall, and the setting of guide sleeve can promote the fortune of main valve plug
Dynamic stationarity, while main valve plug being avoided directly to contact with piston cavity wall, the abrasion to main valve plug is reduced, is improved service life.
Embodiment 3
As shown in figs. 1 and 3, the present embodiment is to be further optimized on the basis of embodiment 1, specifically, adjustment portion
6 upper end of part is connected with pilot valve 23, and regulating member 6 is internally provided with main film 13, and 13 both ends of main film are fixed on regulating member 6
On, 13 upper end of main film is provided with pouring weight 14 on film, and main valve stem 5 passes through pouring weight 14 on main film 13 and film, and main valve stem 5 is detachable
It is connected on main film 13 and film on pouring weight 14,5 bottom of main valve stem is connected with flap 15, and outlet chamber 4, which is connected with, protrudes into adjustment portion
The signal pipe 16 for being located at 13 lower section of main film in part 6,3 upper end of valve port are provided with the valve port set 17 cooperated with flap 15.
In the present embodiment, the pressure of outlet chamber is transmitted in regulating member by signal pipe, then pilot valve is cooperated to act on, band
Dynamic main film is swung up and down, so that main valve stem be driven to move up and down, the gap of the flap and valve port set that make main valve stem bottom is recycled
Ground increases or reduces, to make the stable gas pressure of outlet chamber in certain fluctuation range, the effect of pilot valve be no matter inlet chamber
Pressure limit arbitrarily changes, and all can preferably control outlet cavity pressure, so that outlet chamber pressure be made to stablize in certain value.
Embodiment 4
As shown in figs. 1 and 3, the present embodiment is to be further optimized on the basis of embodiment 1, specifically, 1 bottom of valve body
Portion is provided with the cutter 18 for on-off valve port 3, and cutter 18 includes protruding into valve body 1 to be located at cutting immediately below valve port 3
Disconnected valve rod 19,3 lower end of valve port are provided with slip guiding sleeve 20, and 20 side wall of slip guiding sleeve offers several deflector holes communicated with inlet chamber 2
20.1, the piston valve core 21 for connecting and capable of being slided up and down at the top of valve rod 19 in slip guiding sleeve 20 is cut off, cuts off and is wound on valve rod 19
Closing spring 22 between piston valve core 21 and valve body 1.
In the present embodiment, when blocking valve port by cutter, the executing agency's effect of cutter inside it is lower to be pushed
Valve rod is cut off close to valve port, while the piston valve core for cutting off valve stem top slides in slip guiding sleeve, until piston valve core is by slide guide
Deflector hole blocks on set, closes spring and piston valve core is pushed against on the step in slip guiding sleeve, so that valve port be made to be in envelope
Closed state, closure tightness is good, and cutting is stablized.
The above, the only preferred embodiment of the utility model, are not intended to limit the utility model, the utility model
Scope of patent protection be subject to claims, it is equivalent made by all specifications and accompanying drawing content with the utility model
Structure change similarly should be included in the protection scope of the utility model.
Claims (5)
1. a kind of closed valve core type high-precision pressure regulator, including valve body (1), valve body (1) is interior successively to offer inlet chamber (2), valve
Mouth (3) and outlet chamber (4), the interior main valve stem moving up and down (5) being provided with right above valve port (3) of valve body (1), valve body
(1) upper end is removably connected with regulating member (6), and main valve stem (5) one end is protruded into regulating member (6), which is characterized in that is adjusted
It is provided with end cap (7) at the top of component (6), is surrounded plunger shaft (8) inside end cap (7), is connected at the top of main valve stem (5) positioned at piston
Main valve plug (9) in chamber (8), end cap (7) inner top are provided with the adjustment spring (10) with main valve plug (9) cooperation.
2. a kind of closed valve core type high-precision pressure regulator according to claim 1, which is characterized in that plunger shaft (8) inner wall
Be provided with main valve plug (9) cooperation guide sleeve (11), main valve plug (9) outer wall be provided with a circle contacted with guide sleeve (11) it is close
Seal (12).
3. a kind of closed valve core type high-precision pressure regulator according to claim 1, which is characterized in that on regulating member (6)
End is connected with pilot valve (23), and regulating member (6) is internally provided with main film (13), and main film (13) both ends are fixed on adjustment portion
On part (6), main film (13) upper end is provided with pouring weight on film (14), and main valve stem (5) passes through pouring weight on main film (13) and film
(14), main valve stem (5) is detachably connected on main film (13) and film on pouring weight (14), and main valve stem (5) bottom is connected with flap
(15), outlet chamber (4) is connected with the signal pipe (16) being located at below main film (13) protruded into regulating member (6).
4. a kind of closed valve core type high-precision pressure regulator according to claim 3, which is characterized in that valve port (3) upper end is set
It is equipped with the valve port set (17) with flap (15) cooperation.
5. a kind of closed valve core type high-precision pressure regulator according to claim 1, which is characterized in that valve body (1) bottom is set
Be equipped with the cutter (18) for on-off valve port (3), cutter (18) include protrude into valve body (1) be located at valve port (3) just under
The cutting valve rod (19) of side, valve port (3) lower end are provided with slip guiding sleeve (20), and slip guiding sleeve (20) side wall offers several and inlet chamber
(2) deflector hole (20.1) communicated, the piston valve core that the connection of cutting valve rod (19) top can slide up and down in slip guiding sleeve (20)
(21), the closing spring (22) being wound between piston valve core (21) and valve body (1) on valve rod (19) is cut off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821142197.2U CN208442334U (en) | 2018-07-17 | 2018-07-17 | A kind of closed valve core type high-precision pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821142197.2U CN208442334U (en) | 2018-07-17 | 2018-07-17 | A kind of closed valve core type high-precision pressure regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208442334U true CN208442334U (en) | 2019-01-29 |
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ID=65085349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821142197.2U Active CN208442334U (en) | 2018-07-17 | 2018-07-17 | A kind of closed valve core type high-precision pressure regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208442334U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151399A (en) * | 2021-11-01 | 2022-03-08 | 广东鑫太自动化设备有限公司 | Electronic proportional control valve and control system |
-
2018
- 2018-07-17 CN CN201821142197.2U patent/CN208442334U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151399A (en) * | 2021-11-01 | 2022-03-08 | 广东鑫太自动化设备有限公司 | Electronic proportional control valve and control system |
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