CN203051878U - Self-operated pressure regulating valve used for micro flow control in micro-pressure - Google Patents
Self-operated pressure regulating valve used for micro flow control in micro-pressure Download PDFInfo
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- CN203051878U CN203051878U CN 201320021557 CN201320021557U CN203051878U CN 203051878 U CN203051878 U CN 203051878U CN 201320021557 CN201320021557 CN 201320021557 CN 201320021557 U CN201320021557 U CN 201320021557U CN 203051878 U CN203051878 U CN 203051878U
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- pressure
- baffle plate
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Abstract
The utility model relates to the field of self-operated regulating valves, in particular to a self-operated pressure regulating valve used for micro flow control in micro-pressure. The self-operated pressure regulating valve comprises a valve body, an actuator and a valve rod, and is characterized in that the lower end of the valve rod is in threaded connection with one end of a connecting piece, a flat baffle is arranged at the other end of the connecting piece, the flat baffle is placed in a throttling accommodating cavity, a nozzle is arranged on the valve body, a nozzle inner hole is respectively connected with a valve body inner channel and the throttling accommodating cavity, and the nozzle and the flat baffle form an end face sealing structure. A reset spring is arranged between the back side of a sealing face of the flat baffle and a lower cover of the throttling accommodating cavity. The sealing face where the flat baffle and the nozzle contact is provided with a rubber layer. The diameter of the nozzle inner hole is 1-5mm. Compared with the prior art, the self-operated pressure regulating valve has the advantages of being capable of carrying out regulation of media in micro-flow, namely CV<0.03, stable and reliable in control, long in service life, fast in stabilization, and capable of achieving constant pressure in a dynamic mode and long-term on-line reliable operation.
Description
Technical field
The utility model relates to the direct-operated regulator field, particularly a kind of self-contained pressure regulator for tiny flow quantity control under the minute-pressure.
Background technique
The present workplace that the medium of tiny flow quantity is controlled under to the minute-pressure operating mode, the minute-pressure self-contained pressure regulator product of conventional structure is difficult to meet the demands, and sees Fig. 1.Because conventional minute-pressure direct-operated regulator main structure is the trim composite structure form of plunger (17)+valve seat (16), the minimum diameter of its plunger is about 6mm, if being used for tiny flow quantity regulates, the diameter of its spool will reach below the 3mm, this must cause spool self intensity to descend, and present in addition manufacturing process also is difficult to guarantee its machining accuracy and coaxality requirement.Therefore, in order to realize the effective control under slight pressure and the tiny flow quantity stack operating mode, the mode that adopts open channels at the bigger spool of diameter is arranged, but owing to self laying particular stress on of spool, can cause controlled effect bad, the dynamic constant pressure effect is stablized in influence, therefore never searches out the control problem that suitable way and break-through point solve tiny flow quantity under the minute-pressure.
Summary of the invention
The purpose of this utility model provides a kind of self-contained pressure regulator for tiny flow quantity control under the minute-pressure, overcome the deficiencies in the prior art, solve under the minute-pressure condition adjusting of tiny flow quantity (CV=0.03 is following) medium is controlled, guarantee self dynamic constant pressure, the degree of regulation height, the dynamic response sensitivity, reliable by pressure regulation power and stability of flow.
In order to achieve the above object, the utility model adopts following technological scheme to realize:
The self-contained pressure regulator that is used for tiny flow quantity control under the minute-pressure, comprise valve body, actuator and valve rod, the valve rod lower end is connected with the threaded one end of link, the other end of link is provided with the plane baffle plate, the plane baffle plate is positioned at the throttling cavity volume, nozzle is located on the valve body, and the nozzle endoporus connects valve inner runner and throttling cavity volume respectively, and nozzle and plane baffle plate form end face seal structure.
Be provided with Returnning spring between the dorsal part of the sealing surface of described plane baffle plate and the lower cover of throttling cavity volume.
The sealing surface that described plane baffle plate contacts with nozzle is provided with rubber layer.
Described nozzle diameter of bore is 1～5mm.
Compared with prior art, the beneficial effects of the utility model are:
1) compact structure is reasonable, is skillfully constructed and modern design.
2) adopt nozzle+plane soft seal baffle arrangement, can carry out the adjusting of the following tiny flow quantity medium of CV=0.03, and control reliable and stable, soft sealing structure, can guarantee effectively that trim closes sealing effect, improve on-the-spot control effect and control quality.
3) regulate for tiny flow quantity and the dual stack medium of slight pressure, the fast and dynamic constant pressure of stable state can long-term online reliable operation.
4) can online dismounting and maintenance, reduce maintenance man's working strength and day-to-day maintenance.
Description of drawings
Fig. 1 is the trim composite structure schematic representation of plunger+valve seat in the prior art;
Fig. 2 is the utility model example structure schematic representation;
Fig. 3 is the interior partial enlarged drawing of throttling cavity volume among Fig. 2.
Among the figure: the 1-valve body 2-nozzle 3-plane baffle plate 4-nut 5-connecting rod 6-Returnning spring 7-screw 8-lower cover 9-sealing gasket 10-valve rod 11-stub (tube) 12-13-of actuator rubber layer 14-throttling cavity volume 15-valve inner runner 16-valve seat 17-plunger
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
As Fig. 2, Fig. 3, it is the self-contained pressure regulator example structure schematic representation that the utility model is used for tiny flow quantity control under the minute-pressure, comprise valve body 1, actuator 12 and valve rod 10, link to each other by stub (tube) 11 between actuator 12 and the valve body 1, be provided with sealing gasket 9 between stub (tube) 11 and the valve body 1, valve rod 10 lower ends are connected with the threaded one end of link 5, the other end of link 5 is provided with plane baffle plate 3, plane baffle plate 3 is positioned at throttling cavity volume 14, the plane baffle plate is effectively locked by nut 4, guarantee assembling effect and self stiffness and strength of plane baffle plate 3, nozzle 2 is located on the valve body 1 by screw thread, stop internal leakage, nozzle 1 endoporus connects valve inner runner 15 and throttling cavity volume 14 respectively, and nozzle 2 forms end face seal structure with plane baffle plate 3.The utility model has been used in the 1/4D of nozzle+baffle plate Throttle Principle and fast katal and has been linear adjustable correlation theory, and the adjusting of the following tiny flow quantity medium of CV=0.03 is achieved.Baffle plate 3 materials in plane are lightweight materials such as aluminum alloy, and effectively weight reduction improves response time and induction sensitivity.Throttling cavity volume 14 is made up of valve body 1 and lower cover 8, and lower cover is fastening by screw 7, is convenient to assembling and on-line maintenance, reduces maintenance man's working strength and day-to-day maintenance expenditure.
Consider from minute-pressure adjusting and transient equiliblium time angle, be provided with Returnning spring 6 between the lower cover 8 of the dorsal part of the sealing surface of plane baffle plate 3 and throttling cavity volume, effectively slow down the overshoot of plane baffle plate knee-action, the thrust that produces with machine system inside reaches transient equiliblium rapidly, effectively reduces the stable state time.
The sealing surface that plane baffle plate 6 contacts with nozzle 2 is provided with the rubber layer 13 of fluorine rubber, in order to guarantee the inner sealing effect when closing, leakage rate can reach the VI level.
Nozzle 2 diameter of bores are 1～5mm, and it both can guarantee the requirement of throttling element intensity, can satisfy the demand that tiny flow quantity is regulated again.
Claims (4)
1. the self-contained pressure regulator that is used for tiny flow quantity control under the minute-pressure, comprise valve body, actuator and valve rod, it is characterized in that, the valve rod lower end is connected with the threaded one end of link, the other end of link is provided with the plane baffle plate, and the plane baffle plate is positioned at the throttling cavity volume, and nozzle is located on the valve body, the nozzle endoporus connects valve inner runner and throttling cavity volume respectively, and nozzle and plane baffle plate form end face seal structure.
2. the self-contained pressure regulator for tiny flow quantity control under the minute-pressure according to claim 1 is characterized in that, is provided with Returnning spring between the dorsal part of the sealing surface of described plane baffle plate and the lower cover of throttling cavity volume.
3. the self-contained pressure regulator for tiny flow quantity control under the minute-pressure according to claim 1 is characterized in that the sealing surface that described plane baffle plate contacts with nozzle is provided with rubber layer.
4. the self-contained pressure regulator for tiny flow quantity control under the minute-pressure according to claim 1 is characterized in that described nozzle diameter of bore is 1～5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320021557 CN203051878U (en) | 2013-01-16 | 2013-01-16 | Self-operated pressure regulating valve used for micro flow control in micro-pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320021557 CN203051878U (en) | 2013-01-16 | 2013-01-16 | Self-operated pressure regulating valve used for micro flow control in micro-pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203051878U true CN203051878U (en) | 2013-07-10 |
Family
ID=48734831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320021557 Expired - Lifetime CN203051878U (en) | 2013-01-16 | 2013-01-16 | Self-operated pressure regulating valve used for micro flow control in micro-pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203051878U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644342A (en) * | 2013-11-25 | 2014-03-19 | 大连元利流体技术有限公司 | Pneumatic-control pollution-resistant zero-leakage cartridge pressure reducing valve |
-
2013
- 2013-01-16 CN CN 201320021557 patent/CN203051878U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644342A (en) * | 2013-11-25 | 2014-03-19 | 大连元利流体技术有限公司 | Pneumatic-control pollution-resistant zero-leakage cartridge pressure reducing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BAI JIN Free format text: FORMER OWNER: ANSHAN BELL AUTOMATIC CONTROLLING CO., LTD. Effective date: 20130923 Owner name: BAI GE BAI HONGWEI Effective date: 20130923 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 114014 ANSHAN, LIAONING PROVINCE TO: 114004 ANSHAN, LIAONING PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130923 Address after: 114004, 56-16 East Green Street, Liaoning, Anshan Patentee after: Bai Jin Patentee after: Bai Ge Patentee after: Bai Hongwei Address before: 114014, science and technology road, Anshan, Liaoning hi tech Zone (East), No. 58 Patentee before: ANSHAN BELL AUTOMATIC CONTROLLING Co.,Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: ANSHAN BELL AUTOMATIC CONTROLLING CO., LTD. Free format text: FORMER OWNER: BAI JIN Effective date: 20140310 Free format text: FORMER OWNER: BAI GE BAI HONGWEI Effective date: 20140310 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 114004 ANSHAN, LIAONING PROVINCE TO: 114014 ANSHAN, LIAONING PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140310 Address after: 114014, science and technology road, Anshan, Liaoning hi tech Zone (East), No. 58 Patentee after: ANSHAN BELL AUTOMATIC CONTROLLING Co.,Ltd. Address before: 114004, 56-16 East Green Street, Liaoning, Anshan Patentee before: Bai Jin Patentee before: Bai Ge Patentee before: Bai Hongwei |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |