CN207333910U - A kind of ultra micro presses pilot-operated regulator - Google Patents
A kind of ultra micro presses pilot-operated regulator Download PDFInfo
- Publication number
- CN207333910U CN207333910U CN201721306839.3U CN201721306839U CN207333910U CN 207333910 U CN207333910 U CN 207333910U CN 201721306839 U CN201721306839 U CN 201721306839U CN 207333910 U CN207333910 U CN 207333910U
- Authority
- CN
- China
- Prior art keywords
- valve
- pilot
- main valve
- auxiliary
- connecting pipe
- 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 - Fee Related
Links
Abstract
A kind of ultra micro pressure pilot-operated regulator is the utility model is related to, is mainly made of including main valve, pilot valve valve and connecting pipe, main valve main valve body, bottom cover, main valve plug, main valve seat, seal sleeve, stent and main valve film room；Pilot valve valve is made of boring cover, auxiliary valve body, auxiliary-seat, control film room, auxiliary valve core, adjusting spring, adjustment disk, the cover, adjusting nut, plane ball bearing and connector.The sealing surface of the auxiliary valve core of the pilot valve valve is the fluorubber sealing block being press-fitted in its lower end, and edge of a knife shape cone is processed into the auxiliary-seat upper end；In the adjustment disk of the pilot valve valve plane ball bearing is equipped with adjusting nut；Limitation control diaphragm is set to move up and down the gag lever post of position in the control film room of the pilot valve valve.The advantages that with tightness and good operating stability, degree of regulation and high sensitivity is sealed, the ultra micro especially suitable for nitrogen seal device in various industrial equipments press adjustment control.
Description
Technical field
The utility model belongs to valve technology field, and in particular to a kind of ultra micro pressure pilot valve manipulation type self-operated type is adjusted
Valve.
Background technology
Pilot-operated regulator, using pilot valve structure design, using pressure medium after valve as power source, draws
Enter to pilot valve valve film room, act on to control the spool position of pilot valve on control diaphragm, change flows through pilot valve valve seat
Pressure medium and flow, end pressure keeps precise constant after making valve.
But there are unreasonable part, such as secondary valve for the structure design of the pilot-operated regulator of the prior art
The contact area of core and auxiliary-seat sealing surface is small, and sealing tightness is poor；Easily cause during adjustment setting pressure and adjust spring torsion, lead
Cause control spool kinematic accuracy to be deteriorated, and influence the degree of regulation and job stability of valve, it is impossible to be well adapted for setting
Pressure 0.5kPa and following ultra micro pressure adjustment control.
The content of the invention
For shortcoming existing in the prior art, the purpose of this utility model is that design provides a kind of ultra micro pressure pilot valve behaviour
Make type direct-operated regulator.
The technical solution of the utility model is：A kind of ultra micro presses pilot-operated regulator, including master
Connecting pipe after connecting pipe 2, filtering pressure reducer 3, pilot valve valve 4, pilot valve valve connecting pipe 5, adjusting needle valve 6 and valve before valve 1, valve
7；Main valve 1 is made of bottom cover 11, main valve body 12, main valve plug 13, main valve seat 14, seal sleeve 15, stent 16 and main film room 17；Refer to
Device valve 4 is waved by boring cover 41, auxiliary valve body 42, auxiliary-seat 43, control film room 44, auxiliary valve core 45, adjusting spring 46, adjustment disk 47, cover
Lid 48, adjusting nut 49, plane ball bearing 50 and connector composition.Pilot valve valve 4 is installed on the top of main valve 1, main valve inlet
End is connected by connecting pipe before valve 2 with 4 left port of pilot valve valve, and Main valve outlet end passes through connecting pipe after valve 7 and main valve film room
Lower film room D is communicated, and 4 right output port of pilot valve valve is communicated by connecting pipe 5 with 6 upper port of adjusting needle valve, 6 lower end of adjusting needle valve
Mouth F is communicated by connecting pipe with the upper film chamber C of main valve film room 17, and Main valve outlet end pressure tappings pass through connecting pipe and control film room 44
Upper film chamber A be connected, it is characterised in that：The sealing surface of the auxiliary valve core 45 of the pilot valve valve is the fluorubber being press-fitted in its lower end
Sealing block 451,43 upper end of auxiliary-seat process coning edge of a knife shape.
In the technical program, plane ball axis is added between the adjustment disk 47 and adjusting nut 49 of the pilot valve valve
Hold 50.
In the technical program, the cover 48 is moulding.
In the technical program, limitation control diaphragm is set to move up and down position in the control film room of the pilot valve valve
Gag lever post.
The beneficial effect that the utility model is brought is：The auxiliary valve core of pilot valve valve and the edge of a knife that auxiliary-seat is fluorubber material
Shape plane linear sealing, seal pressure is big, tightness and good operating stability is sealed, so as to improve what valve controlled ultra-miniature pressure
Reaction sensitivity.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the schematic enlarged-scale view of the auxiliary valve core of pilot valve valve and auxiliary-seat in the utility model.
Embodiment
The embodiment of the utility model is described further below in conjunction with the accompanying drawings.
Connecting pipe 2, mistake before a kind of ultra micro pressure pilot-operated regulator, including main valve 1, valve as depicted
Connecting pipe 7 after filter pressure reducer 3, pilot valve valve 4, pilot valve valve connecting pipe 5, adjusting needle valve 6 and valve；Main valve 1 is by bottom cover 11, master
Valve body 12, main valve plug 13, main valve seat 14, seal sleeve 15, stent 16 and main film room 17 form；Pilot valve valve 4 is by boring cover 41, pair
Valve body 42, auxiliary-seat 43, control film room 44, auxiliary valve core 45, adjust spring 46, be adjustment disk 47, the cover 48, adjusting nut 49, flat
Face ball bearing 50 and connector composition.Pilot valve valve 4 is installed on the top of main valve 1, main valve inlet end by connecting pipe before valve 2 with
4 left port of pilot valve valve is connected, and Main valve outlet end is communicated by connecting pipe after valve 7 with the lower film room D of main valve film room, pilot valve valve
4 right output ports are communicated by connecting pipe 5 with 6 upper port of adjusting needle valve, and 6 lower port F of adjusting needle valve passes through connecting pipe and main valve
The upper film chamber C of film room 17 is communicated, and Main valve outlet end pressure tappings are connected by connecting pipe with the upper film chamber A of control film room 44, it is special
Sign is：The sealing surface of the auxiliary valve core 45 of the pilot valve valve is the fluorubber sealing block 451 being press-fitted in its lower end, the pair valve
43 upper ends of seat process coning edge of a knife shape 431.By auxiliary valve core and the conical surface sealing structure of auxiliary-seat, fluorubber material is improved to
Auxiliary valve core plane soft sealing face, with auxiliary-seat edge of a knife shape sealing surface formed planar line sealing structure, pilot valve can be obviously improved
The sealing tightness of valve, so as to improve the reaction sensitivity that valve controls ultra-miniature pressure.
Plane ball bearing 50 is added between the adjustment disk 47 and adjusting nut 49 of the pilot valve valve, is being adjusted with improving
Cause during whole setting pressure and adjust spring torsion, cause the fault of construction for controlling spool kinematic accuracy to be deteriorated, so as to effectively carry
The degree of regulation and job stability of high valve.
The cover 48 uses moulding, makes the steel protection cover-cap of original product into moulding, not only light and handy beautiful, but also can
Save manufacture cost.
Set limitation control diaphragm to move up and down the gag lever post of position in the control film room 44 of the pilot valve valve, play
The motion amplitude scope of limitation control diaphragm, can effectively improve its service life.
Its operation principle is：Main valve is in closure before work, pilot valve valve is in opening.When medium is by the direction of arrow
Main valve is flowed into, pilot valve valve is entered by connecting pipe before valve 2, then connecting pipe 7, adjusting needle valve 6 enter film on main valve after valve
Room C, main valve plug 13 move down, and open main valve, medium flows out after throttling.When downstream pressure P2 raises to above pilot valve
When valve initially sets pressure, downstream pressure P2 enters main valve lower film room D, promotes main valve plug 13 to move up, makes main valve plug and main valve seat
Between circulation area reduce so that downstream pressure reduce（Coarse adjustment）.Downstream pressure P2 enters pilot valve valve upper film chamber A at the same time, passes through
The sensing amplification of diaphragm is controlled, promotes auxiliary valve core 45 to move down, progressively closes off pilot valve valve, medium flows through the throttling of pilot valve valve
Resistance increases so that and power source pressure Ps reduces, and accordingly reduces into main valve upper film chamber pressure medium, and main valve further turns down,
Downstream pressure continues to reduce（Accurate adjustment）, finally tend to balance, downstream pressure P2 is maintained at setting value.
When downstream pressure P2, which decreases below pilot valve valve, initially sets pressure, action direction is contrary to the above, passes through
Main valve coarse adjustment and the accurate adjustment of pilot valve valve, increase P2, and finally tending to balance makes outlet pressure be maintained at setting value.
The initial setting pressure of main valve is according to upstream pressure scope, by the film room or not for selecting different effective active areas
Pneumatic spring with rigidity is determined, the initial setting pressure of pilot valve valve can by adjusting adjust the pretightning force of spring 46 into
Row setting.
The content not being described in detail in this specification, belongs to the prior art known to those skilled in the art.
Claims (4)
1. connecting pipe, filtering pressure reducer, commander before a kind of ultra micro pressure pilot-operated regulator, including main valve, valve
Connecting pipe after device valve, pilot valve valve connecting pipe, adjusting needle valve and valve；Main valve is by main valve body, bottom cover, main valve plug, main valve seat, close
Big envelope cylinder, stent and main valve film room form；Pilot valve valve is by boring cover, auxiliary valve body, auxiliary-seat, control film room, auxiliary valve core, adjusting bullet
Spring, adjustment disk, the cover, adjusting nut, plane ball bearing and connector composition；Pilot valve valve is installed on the top of main valve, main valve
Input end is connected by connecting pipe before valve with pilot valve valve left port, and Main valve outlet end passes through connecting pipe after valve and main valve film room
Lower film room communicates, and pilot valve valve right output port is communicated by connecting pipe with adjusting needle valve upper port, and adjusting needle valve lower port is led to
The upper film chamber that connecting pipe is crossed with main valve film room communicates, and Main valve outlet end pressure tappings pass through connecting pipe and upper film chamber's phase of control film room
Even, it is characterised in that：The sealing surface of the auxiliary valve core of the pilot valve valve is the fluorubber sealing block being press-fitted in its lower end, the pair
Valve seat upper end processes coning edge of a knife shape.
A kind of 2. ultra micro pressure pilot-operated regulator according to claim 1, it is characterised in that：Described
Plane ball bearing is added between the adjustment disk and adjusting nut of pilot valve valve.
A kind of 3. ultra micro pressure pilot-operated regulator according to claim 1, it is characterised in that：The cover
Lid is moulding.
A kind of 4. ultra micro pressure pilot-operated regulator according to claim 1, it is characterised in that：Described
Limitation control diaphragm is set to move up and down the gag lever post of position in the control film room of pilot valve valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721306839.3U CN207333910U (en) | 2017-10-11 | 2017-10-11 | A kind of ultra micro presses pilot-operated regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721306839.3U CN207333910U (en) | 2017-10-11 | 2017-10-11 | A kind of ultra micro presses pilot-operated regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207333910U true CN207333910U (en) | 2018-05-08 |
Family
ID=62368395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721306839.3U Expired - Fee Related CN207333910U (en) | 2017-10-11 | 2017-10-11 | A kind of ultra micro presses pilot-operated regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207333910U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139997A (en) * | 2018-09-29 | 2019-01-04 | 乐山市前沿油气设备制造有限公司 | Pressure regulator valve |
-
2017
- 2017-10-11 CN CN201721306839.3U patent/CN207333910U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139997A (en) * | 2018-09-29 | 2019-01-04 | 乐山市前沿油气设备制造有限公司 | Pressure regulator valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180508 Termination date: 20191011 |