CN201715058U - Diaphragm-type flow regulating valve with circulating system - Google Patents
Diaphragm-type flow regulating valve with circulating system Download PDFInfo
- Publication number
- CN201715058U CN201715058U CN2010202566514U CN201020256651U CN201715058U CN 201715058 U CN201715058 U CN 201715058U CN 2010202566514 U CN2010202566514 U CN 2010202566514U CN 201020256651 U CN201020256651 U CN 201020256651U CN 201715058 U CN201715058 U CN 201715058U
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- valve
- valve core
- diaphragm
- conical
- valve piece
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Abstract
The utility model discloses a diaphragm-type flow regulating valve with a circulating system. A bottom cover is provided with a liquid inlet and a circulating liquid outlet which are communicated by a liquid runner, and a liquid cavity is communicated with the liquid runner; a first valve block is provided with a conical inner cavity, the lower end of the first valve block is provided with the liquid cavity, and the conical inner cavity is communicated with a flow regulating outlet on the valve block; a conical valve core is arranged in the conical inner cavity, a large cylinder body on the upper end passes through a first diaphragm hole and reaches into a second valve block, the upper end of a spherical valve core is propped against the lower end of a conical valve core supporting rod, and the shoulder surface of the conical valve core is propped against the lower end of the first diaphragm; the second valve block is provided with an air cavity which is communicated with a control air inlet on the valve block, and the middle part of the second diaphragm is arranged at the upper part of the air cavity of the valve block; and a nut inner hole in the air cavity of the second valve block is matched with the upper end of the conical valve core, the lower end of a nut is propped against the upper end of the first diaphragm and the upper end thereof is connected with the second diaphragm. The valve effectively prevents small particles in liquid from blocking the valve body and has compact structure under the circumstance of ensuring the enough flow regulation scope.
Description
Technical field
The utility model relates to flow control valve, relates in particular to a kind of circuit membrane type flow quantity adjusting valve that has.
Background technique
Flow control valve begins development in the seventies in last century.This is because flow control valve can not only be used for closed loop control, can also be used for open-loop control system; In addition, the machining accuracy of flow control valve has reduced cost of production significantly far below servovalve.In most of industrial control systems, its control accuracy and dynamic performance can both meet the demands.
At present, the flow control valve on the market is mainly based on magnetic slide valve formula structure.It is by proportion electro-magnet, spool, valve pocket, main valve body, compositions such as base and feedback spring.Its working principle is: during reset mode, spring is compressed, and spool is subjected to the pressure of spring to be pressed in valve pocket to export; During work, the proportion electro-magnet energising produces magnetic field, and moving iron core is lifted and spool is produced the thrust opposite with spring force; When the control electric current increases when making thrust greater than initial tension of spring gradually, proportion electro-magnet promotes spool, and flow control valve is opened.Work as coil losing electricity, moving iron core returns to original state under the effect of spring force, compresses the valve pocket outlet.There is following some deficiency in above-mentioned sliding valve style flow control valve: in order to guarantee the oil circuit sealing, the gap between the sliding sealing surface is very little, causes spool stuck easily, causes the Flow-rate adjustment defective valve; Electricity-the mechanical characteristic of proportion electro-magnet and the mechanics-placement property of spring have determined the precision of sliding valve style flow control valve, so in open system, the precision of sliding valve style flow control valve is mainly determined by the electricity-mechanics precision of electromagnet; Installation precision is had relatively high expectations, and not being suitable for needs the often occasion of dismounting.
Summary of the invention
At the deficiency that prior art exists, the purpose of this utility model is to provide a kind of circuit membrane type flow quantity adjusting valve that has, and has solved the flow control valve stability in use, compact structure under the situation of assurance enough accuracy.
The technical solution adopted in the utility model is:
The utility model is connected in sequence by bottom, the first valve piece, primary diaphragm, the second valve piece, secondary diaphragm and top cover; Wherein:
1) both sides of bottom have the liquid inlet P that is connected by flow channel for liquids
3With circulating liquid outlet P
4, having the big and little secondary shoulder hole liquid container in lower end in upper end on the bottom, the liquid container lower end is connected with described flow channel for liquids; The small end of secondary shoulder hole is equipped with spring, and the spherical valve core lower end that is contained in the middle part of secondary shoulder hole withstands on the spring;
2) have the big and little conical internal cavity in lower end in upper end on the first valve piece, conical internal cavity has oil groove, the lower end of conical internal cavity has little and the secondary shoulder hole that the lower end is big in upper end, the bottom and the first valve interblock are installed the collar, respectively with second seal ring and the sealing of first seal ring, the Flow-rate adjustment on the conical internal cavity and the first valve piece exports P to the collar up and down
2Be communicated with, the primary diaphragm middle part is positioned at the big stomidium top of conical internal cavity; In the described conical internal cavity taper valve core is housed, the large cylinder of taper valve core upper end passes in primary diaphragm mider hole to the second valve piece, and the spherical valve core upper end withstands on the lower end of taper valve core strut, and the circular bead surface of taper valve core withstands on the primary diaphragm lower end;
3) have air chamber on the second valve piece, the control gas inlet P on the air chamber and the second valve piece
1Be communicated with, the secondary diaphragm middle part is positioned at the air chamber top of the second valve piece; In the air chamber of the second valve piece nut is housed, the cylindrical body of nut inner hole and taper valve core upper end is a screw-thread fit, and the lower end of nut withstands on the primary diaphragm upper end, and the upper end of nut is connected by screw with secondary diaphragm;
4) lower end surface of top cover has air chamber, and air chamber is communicated with runner on the top cover, and runner cooperates with plug.
The outer diameter D of described spring
1Less than the spherical valve core outer diameter D
2The described second seal ring minimum-value aperture d
2Less than the spherical valve core outer diameter D
2The minimum-value aperture d of the described collar
1Greater than the spherical valve core outer diameter D
2Taper valve core strut bar footpath D
3Less than the first valve piece minimum-value aperture d
3The cone angle of the taper valve core conical surface
1Cone angle greater than the first valve piece conical surface
2
The beneficial effect that the utlity model has is:
The elastic force that the utility model produces when adopting length of spring compressed has guaranteed that spool has enough sealing loads to nozzle; The spherical valve core of spool has and is partially submerged in the collar that has cone tank, guarantees to have sealed closely the circulating liquid outlet; Diaphragm type structure effectively prevents small particles in liquid obstruction valve body; The circulating liquid outlet has prevented that paint from waiting liquid frozen plug valve body; The valve core structure Rational Parameters under the situation that guarantees enough flow adjustment range, makes the membrane type flow quantity adjusting valve compact structure.Be mainly used in the low pressure occasion.
Description of drawings
Fig. 1 is a structural principle sectional view of the present utility model.
Fig. 2 is the sectional view of the utility model primary diaphragm.
Fig. 3 is the sectional view of the utility model secondary diaphragm.
Fig. 4 is the partial schematic diagram of the utility model spool part.
Output flow was regulated the indicatrix of rate of discharge Q when Fig. 5 was input air pressure P and zero load.
Among the figure: 1, bottom; 2, the first valve piece; 3, the second valve piece; 4, top cover; 5, spring; 6, spherical valve core; 7, taper valve core; 8, nut; 9, the collar; 10, first seal ring; 11, second seal ring; 12, primary diaphragm; 13, secondary diaphragm; 14, plug; 15, two screws; 16, liquid container; 17, oil groove; 18, air chamber; P
1, control gas inlet; P
2, Flow-rate adjustment outlet; P
3, the liquid inlet; P
4, circulating liquid outlet.
Embodiment
By following drawings and Examples the utility model is further described.
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, be connected in sequence by bottom 1, the first valve piece 2, primary diaphragm 12, the second valve piece 3, secondary diaphragm 13 and top cover 4; Wherein:
1) both sides of bottom 1 have the liquid inlet P that is connected by flow channel for liquids
3With circulating liquid outlet P
4, having the big and little secondary shoulder hole liquid container 16 in lower end in upper end on the bottom 1, the liquid container lower end is connected with described flow channel for liquids; The small end of secondary shoulder hole is equipped with spring 5, and spherical valve core 6 lower ends that are contained in the middle part of secondary shoulder hole withstand on the spring 5;
2) have the big and little conical internal cavity in lower end in upper end on the first valve piece 2, conical internal cavity has oil groove 17, the lower end of conical internal cavity has little and the secondary shoulder hole that the lower end is big in upper end, 2 of the bottom 1 and the first valve pieces are installed the collar 9, the collar 9 is up and down respectively with second seal ring 11 and 10 sealings of first seal ring, the Flow-rate adjustment outlet P on the conical internal cavity and the first valve piece 2
2Be communicated with, primary diaphragm 12 middle parts are positioned at the big stomidium top of conical internal cavity; Taper valve core 7 is housed in the described conical internal cavity, the large cylinder of taper valve core 7 upper ends passes in primary diaphragm 12 mider hole to the second valve pieces 3, spherical valve core 6 upper ends withstand on the lower end of taper valve core 7 struts, and the circular bead surface of taper valve core 7 withstands on primary diaphragm 12 lower ends;
3) have air chamber 18 on the second valve piece 3, the control gas inlet P on the air chamber 18 and the second valve piece 3
1Be communicated with, secondary diaphragm 13 middle parts are positioned at air chamber 18 tops of the second valve piece 3; In the air chamber 18 of the second valve piece 3 nut 8 is housed, the cylindrical body of nut 8 endoporus and taper valve core 7 upper ends is a screw-thread fit, and the lower end of nut 8 withstands on primary diaphragm 12 upper ends, and the upper end of nut 8 is connected by screw 15 with secondary diaphragm 13;
4) lower end surface of top cover 4 has air chamber, and air chamber is communicated with runner on the top cover 4, and runner cooperates with plug 14.
As shown in Figure 4, the outer diameter D of described spring 5
1Less than spherical valve core 6 outer diameter D
2Described second seal ring, 11 minimum-value aperture d
2Less than spherical valve core 6 outer diameter D
2The minimum-value aperture d of the described collar 9
1Greater than spherical valve core 6 outer diameter D
2Taper valve core 7 strut bars footpath D
3Less than the first valve piece minimum-value aperture d
3The cone angle of the taper valve core conical surface
1Cone angle greater than the first valve piece conical surface
2
Specific embodiment 1:
Have the circuit membrane type flow quantity adjusting valve by the gas pressure adjusting spherical valve core of input air chamber and the position of taper valve core, realize regulating the first valve piece liquid outlet P
2The function of place's fluid flow size.
Control gas inlet P
1Connect the controlled source of the gas of pressure, the bleed pressure control range is preferentially selected 0～0.3MPa for use; Liquid inlet P
3Connect stable hydraulic power, hydraulic power pressure is no more than 0.6MPa; Flow-rate adjustment outlet P
2Connect the hydraulic unit that needs to regulate flow; Liquid circulation outlet P
4Get back to the hydraulic power of aforementioned stable through filtering, finish the oil circulation function.
The tensioning between spherical valve core and bottom of described spring; Length of spring compressed during original state, and in the movement process of spherical valve core, taper valve core, nut, spring remains compressive state.
As shown in Figure 1, spherical valve core, taper valve core and nut are closed Flow-rate adjustment outlet P under the effect of spring during original state
2, liquid is by liquid inlet P
3Input has the circuit membrane type flow quantity adjusting valve, and by circulating liquid outlet P
4Output; Along with control gas inlet P
1The increase of place's control air pressure P, spherical valve core, taper valve core and nut move downward gradually, and ball seat is opened gradually, Flow-rate adjustment outlet P
2Flow increase thereupon; When oil groove guaranteed taper valve core to extreme lower position, the valve port area of membrane type flow quantity adjusting valve inner chamber still can dependable flow adjusting outlet have enough fluid floies.
Control gas inlet P as shown in Figure 5
1Place's pressure P and Flow-rate adjustment outlet P
2The flow Q of place has variation in proper order: when pressure P reaches P
C0And increase to P gradually
C1The time, Flow-rate adjustment outlet P
2The flow Q of place increases to peak gradually by 0 beginning; When pressure by P
1Continue to increase to P
C2, flow Q descends gradually; When pressure greater than P
C2The time, in the pressure range that this membrane type flow quantity adjusting valve allows, output flow Q remains unchanged.
Specific embodiment 2:
Membrane type flow quantity adjusting valve described in the specific embodiment 1 exports P with circulating liquid in the use
3Block, form the flow control valve that does not have circulating liquid, this concrete enforcement does not influence Flow-rate adjustment outlet P
4Flow characteristics, but liquid inlet P
2Place's flow reduces greatly.
Specific embodiment 3:
Membrane type flow quantity adjusting valve described in the specific embodiment 1 will be controlled the gas inlet and close and will control gas access plug hole in the use, also can realize the control to the membrane type flow quantity adjusting valve flow, control gas inlet P
1Place's pressure P and Flow-rate adjustment outlet P
2The flow Q of place has similar variation.
Specific embodiment 4:
Membrane type flow quantity adjusting valve described in the specific embodiment 1 is opened the groove of a plurality of oil grooves or other shape on the conical surface of the first valve piece on the structure; Do not drive oil groove on the conical surface of the first valve piece, Flow-rate adjustment is exported P
2Aperture position at the first valve piece conical surface moves to the Line of contact that is lower than the taper valve core and the first valve piece conical surface, when guaranteeing that conical valve seat is closed, and Flow-rate adjustment outlet P
2Still can guarantee enough flow output.
Above-mentioned embodiment is used for the utility model of explaining; rather than the utility model limited; in the protection domain of spirit of the present utility model and claim, any modification and change to the utility model is made all fall into protection domain of the present utility model.
Claims (2)
1. one kind has the circuit membrane type flow quantity adjusting valve, it is characterized in that: be connected in sequence by bottom (1), the first valve piece (2), primary diaphragm (12), the second valve piece (3), secondary diaphragm (13) and top cover (4); Wherein:
1) both sides of bottom (1) have the liquid inlet P that is connected by flow channel for liquids
3Go out P with circulating liquid
4, having the big and little secondary shoulder hole liquid container (16) in lower end in upper end on the bottom (1), the liquid container lower end is connected with described flow channel for liquids; The small end of secondary shoulder hole is equipped with spring (5), and spherical valve core (6) lower end that is contained in the middle part of secondary shoulder hole withstands on the spring (5);
2) have the big and little conical internal cavity in lower end in upper end on the first valve piece (2), conical internal cavity has oil groove (17), the lower end of conical internal cavity has little and the secondary shoulder hole that the lower end is big in upper end, between the bottom (1) and the first valve piece (2) collar (9) is installed, the collar (9) is used second seal ring (11) and first seal ring (10) sealing up and down respectively, and the Flow-rate adjustment on the conical internal cavity and the first valve piece (2) goes out P
2Be communicated with, primary diaphragm (12) middle part is positioned at the big stomidium top of conical internal cavity; Taper valve core (7) is housed in the described conical internal cavity, the large cylinder of taper valve core (7) upper end passes in primary diaphragm (12) mider hole to the second valve piece (3), spherical valve core (6) upper end withstands on the lower end of taper valve core (7) strut, and the circular bead surface of taper valve core (7) withstands on primary diaphragm (12) lower end;
3) have air chamber (18) on the second valve piece (3), air chamber (18) is gone into P with the control gas on the second valve piece (3)
1Be communicated with, secondary diaphragm (13) middle part is positioned at air chamber (18) top of the second valve piece (3); In the air chamber (18) of the second valve piece (3) nut (8) is housed, the cylindrical body of nut (8) endoporus and taper valve core (7) upper end is a screw-thread fit, the lower end of nut (8) withstands on primary diaphragm (12) upper end, and the upper end of nut (8) is connected by screw (15) with secondary diaphragm (13);
4) lower end surface of top cover (4) has air chamber, and air chamber is communicated with runner on the top cover (4), and runner cooperates with plug (14).
2. a kind of circuit membrane type flow quantity adjusting valve that has according to claim 1 is characterized in that: the outer diameter D of described spring (5)
1Less than spherical valve core (6) outer diameter D
2Described second seal ring (11) minimum-value aperture d
2Less than spherical valve core (6) outer diameter D
2The minimum-value aperture d of the described collar (9)
1Greater than spherical valve core (6) outer diameter D
2Taper valve core (7) strut bar footpath D
3Less than the first valve piece minimum-value aperture d
3The cone angle of the taper valve core conical surface
1Cone angle greater than the first valve piece conical surface
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202566514U CN201715058U (en) | 2010-07-09 | 2010-07-09 | Diaphragm-type flow regulating valve with circulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202566514U CN201715058U (en) | 2010-07-09 | 2010-07-09 | Diaphragm-type flow regulating valve with circulating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201715058U true CN201715058U (en) | 2011-01-19 |
Family
ID=43461054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202566514U Expired - Lifetime CN201715058U (en) | 2010-07-09 | 2010-07-09 | Diaphragm-type flow regulating valve with circulating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201715058U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900213A (en) * | 2010-07-09 | 2010-12-01 | 杭州浙大精益机电技术工程有限公司 | Membrane type flow quantity adjusting valve with circulation |
| CN107725853A (en) * | 2017-11-14 | 2018-02-23 | 吉林大学 | Flow quantity self-adjusting section control valve based on pressure |
-
2010
- 2010-07-09 CN CN2010202566514U patent/CN201715058U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900213A (en) * | 2010-07-09 | 2010-12-01 | 杭州浙大精益机电技术工程有限公司 | Membrane type flow quantity adjusting valve with circulation |
| CN101900213B (en) * | 2010-07-09 | 2012-01-25 | 杭州浙大精益机电技术工程有限公司 | Membrane type flow quantity adjusting valve with circulation |
| CN107725853A (en) * | 2017-11-14 | 2018-02-23 | 吉林大学 | Flow quantity self-adjusting section control valve based on pressure |
| CN107725853B (en) * | 2017-11-14 | 2023-12-05 | 吉林大学 | Pressure-based flow self-regulating control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110119 Effective date of abandoning: 20120502 |