CN200989468Y - Stepless output flow passage structure for flow proportional valve - Google Patents
Stepless output flow passage structure for flow proportional valve Download PDFInfo
- Publication number
- CN200989468Y CN200989468Y CN 200620109182 CN200620109182U CN200989468Y CN 200989468 Y CN200989468 Y CN 200989468Y CN 200620109182 CN200620109182 CN 200620109182 CN 200620109182 U CN200620109182 U CN 200620109182U CN 200989468 Y CN200989468 Y CN 200989468Y
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 239000011148 porous material Substances 0.000 claims description 10
- 239000012530 fluid Substances 0.000 abstract description 7
- 210000000664 rectum Anatomy 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000003502 gasoline Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
A stepless output flow channel structure for a flow proportional valve belongs to the technical field of fluid automatic control and mainly comprises a valve body (3), an inlet channel (A) and an outlet channel (C) which are arranged in the valve body (3), a guide column assembly (5) which is arranged in the outlet channel (C) and fixed in the middle of a diaphragm (9) and provided with a pressure relief small hole (10) and the like, wherein a fine adjustment conical surface (F) is arranged on the upper part of the inner wall of the outlet channel (C) in the valve body (3), and a main valve port (B) is formed between the fine adjustment conical surface (F) and a short cylindrical surface (D) on the outer diameter of the guide column assembly (5). The utility model discloses an exit channel's inner wall upper portion sets up a fine setting conical surface in the valve body, makes to finely tune the main valve mouth that forms stepless output between the short face of cylinder on conical surface and the guide post subassembly external diameter, has realized that the effective latus rectum of flow proportional valve is opening a little in the twinkling of an eye opened, has improved the preparation precision and the measurement accuracy of flow proportional valve.
Description
Technical field
The utility model relates to a kind of flow proportion valve with stepless delivery channel structure, belongs to the technical field of automatic control of fluid.
Background technique
Flow proportion valve is a kind ofly to obtain the electromagnetic flow valve of stepless output fluid flow by varying in size of input line solenoid valve loop current.The flow passage structure of existing flow proportion valve mainly contains two kinds: a kind of is single flow setting type passage, and another kind is that a big young waiter in a wineshop or an inn flow setting type passage is arranged.Before a kind of flow proportion valve, control the pressure reduction of diaphragm upper and lower cavity with electromagnetic priority valve, diaphragm opens and closes being swift in motion of primary valve, flow is bigger, for given working pressure, liquid measure of its outlet output need only be by decision current"on"time of electromagnetic priority valve.Yet to quantitatively control its output, must accurately control the actuation time of moving iron core in this electromagnetic priority valve, particularly work as liquid output amount more after a little while, the time of electromagnetic pilot opening of valves is shorter, and not only troublesome poeration is difficult to control, and the quantitative output prograin of liquid is low, on the other hand, owing to have only a kind of traffic channel, the overshoot of shutdown back liquid has also brought inaccuracy to metering.A kind of flow proportion valve in back though structurally adopt large and small two fluid passages, increases the metering of solenoid valve, but it has increased a small flow electromagnetic control system, the manufacturing process complexity of valve body increases difficulty of processing, and has only large and small two kinds of flows.
Along with development of science and technology, the flow control of flow proportion valve has been proposed requirements at the higher level, the metering accuracy of small flow not only to be arranged, but also want to adapt to the needs that dispose the multiple liquid of variable concentrations with two kinds of fluids according to a certain percentage.As in the oilling machine with a kind of gasoline and a kind of low-grade gasoline of high grade, two kinds of gasoline inject same fuel tank in different ratios, just can obtain the gasoline of multiple label.This flow proportion valve adopts the size that changes coil current to come the aperture of control flow rate valve port usually, thereby reaches flow stepless output from small to large.But when requiring flow big, the aperture of through-flow body is also bigger, just between the small flow certain numerical value is arranged zero in the moment that flow proportion valve is opened like this, i.e. the jump step that in a flash change of flow between zero and small flow.This jump step has a strong impact on the configuration proportion precision, is that this numerical value of flow proportion valve of Φ 20mm passage will be leapt to about 3 liters/minute from 0 as latus rectum, has influenced the precision preparation and the measuring accuracy of flow proportion valve.
Summary of the invention
It is a kind of reasonable in design that the purpose of this utility model is to provide, and compact structure can stepless output fluid, and the flow proportion valve that effectively improves the metering accuracy is with stepless delivery channel structure.
The utility model is a flow proportion valve with stepless delivery channel structure, comprise valve body, place the upper chamber cover of lumen pore on the band of valve body top, place upper chamber cover top by coil and moving iron core constitute the pilot valve assembly, place the diaphragm of band balance throttling pore between valve body and the upper chamber cover, place inlet passage and outlet passage in the valve body, place the directional post assembly of outlet passage internal fixation in the diaphragm middle part, the upper inside wall that it is characterized in that valve body inner outlet passage has a fine setting conical surface, form primary valve between the Short Cylinder Surface on this fine setting conical surface and the directional post assembly external diameter, also be provided with the release aperture on the directional post assembly, poppet port is formed on the bottom of release aperture and moving iron core.
Also can be provided with balance spring between the top of described upward lumen pore and the diaphragm.
Also can be provided with balance spring between the bottom of the bottom of described moving iron core and pilot valve assembly.
The utility model is provided with a fine setting conical surface by the upper inside wall at valve body inner outlet passage, make the primary valve that forms stepless output between the Short Cylinder Surface on the fine setting conical surface and the directional post assembly external diameter, realized that flow proportion valve is crack at the moment runner effective drift diameter of opening, solved flow proportion valve open moment flow by zero step blank to certain small flow, solve the jump step problem that flow changes in a flash effectively between zero and small flow, improved the precision preparation and the measuring accuracy of flow proportion valve.
Description of drawings
Fig. 1 is the overall structure sectional view under the utility model valve port closed condition;
Fig. 2 is the overall structure sectional view under the utility model valve port opening state;
Fig. 3 is the structure enlarged diagram of K part shown in Figure 2;
Fig. 4 is the structure enlarged diagram of P part shown in Figure 3.
Embodiment
The utility model is mainly by valve body 3, place the upper chamber cover 2 of lumen pore G on the valve body 3 top bands, place the pilot valve assembly on upper chamber cover 2 tops, place the diaphragm 9 of band balance throttling pore 6 between valve body 3 and the upper chamber cover 2, place inlet passage A and outlet passage C in the valve body 3, place the directional post assembly 5 of outlet passage C internal fixation, place the formations such as balance spring 7 between lumen pore G top and the diaphragm 9 in diaphragm 9 middle part band release apertures 10.The upper inside wall of valve body 3 inner outlet channel C has a fine setting conical surface F, forms primary valve B between the Short Cylinder Surface D on this fine setting conical surface F and directional post assembly 5 external diameters, and the release aperture 10 on the directional post assembly 5 forms poppet port E with the bottom of moving iron core 4.
The pilot valve assembly is made of coil 1 and moving iron core 4, is provided with balance spring 8 between the bottom of moving iron core 4 and the bottom of pilot valve assembly.
During coil 1 no electric circuit, under the effect of balance spring 8 elastic force, moving iron core 4 is close on the poppet port E of directional post assembly 5, and poppet port E is closed.When coil 1 feeds DC electrical source, coil 1 produces magnetic force, magnetic force compression balance spring 8 drives moving iron core 4 and moves upward, and opens poppet port E, pressure oil on this moment in the lumen pore G is discharged by release aperture 10, both sides up and down at diaphragm 9 form pressure difference, at the effect lower compression balance spring 7 of this pressure reduction, drive directional post assembly 5 and move up, primary valve B is opened, and fluid flows out rapidly to outlet passage C by inlet passage A and primary valve B along the direction of arrow shown in attached Fig. 1 and 2.Because the magnetic force that coil 1 produces is directly proportional with the electric current of feeding, promptly electric current hour magnetic force is less.The displacement of this magnetic force compression balance spring 8 is also less, and the aperture of poppet port E is corresponding less, causes diaphragm 9 upper and lower sides pressure reduction less.The aperture of primary valve B is less, and output flow is less.In like manner, when pilot valve coil 1 input current increased, the displacement of magnetic force compression balance spring 8 increased.The corresponding increase of the aperture of poppet port E, diaphragm 9 upper and lower sides pressure reduction increase, and the aperture of primary valve B increases, and output flow also increases.Because the electric current of coil 1 is stepless adjustable, so the aperture of poppet port E also is stepless adjustable, even flow proportion valve is realized stepless output.
When the electric current of coil 1 is very little, this moment, directional post assembly 5 under the effect of pressure reduction moved up, when the lower end of directional post assembly 5 moved to the lowest positions of outlet passage C upper inside wall fine setting conical surface F, at this moment the flow of flow proportion valve was mainly by the gap of the Short Cylinder Surface D of directional post assembly 5 and valve body 3 endoporus and finely tune the primary valve B that forms between conical surface F and the Short Cylinder Surface D and determined.Because it is very little that gap and fine setting conical surface F can do, so start-up flow also can be very little, and the primary valve B that forms between fine setting conical surface F and the Short Cylinder Surface D slowly increases along with the rising of directional post assembly 5, so flow is also along with slowly increase.
Claims (3)
1, a kind of flow proportion valve is with stepless delivery channel structure, comprise valve body (3), place the upper chamber cover (2) of lumen pore (G) on the band of valve body (3) top, place upper chamber cover (2) top by coil (1) and moving iron core (4) constitute the pilot valve assembly, place the diaphragm (9) of band balance throttling pore (6) between valve body (3) and the upper chamber cover (2), place inlet passage (A) and outlet passage (C) in the valve body (3), place the directional post assembly (5) of outlet passage (C) internal fixation in diaphragm (9) middle part, the upper inside wall that it is characterized in that valve body (3) inner outlet passage (C) has a fine setting conical surface (F), form primary valve (B) between the Short Cylinder Surface (D) on this fine setting conical surface (F) and directional post assembly (5) external diameter, also be provided with release aperture (10) on the directional post assembly (5), release aperture (10) forms poppet port (E) with the bottom of moving iron core (4).
2, by the described flow proportion valve of claim 1 with stepless delivery channel structure, it is characterized in that also being provided with balance spring (7) between the top of lumen pore (G) and the diaphragm (9) on described,
3, by the described flow proportion valve of claim 1 with stepless delivery channel structure, it is characterized in that also being provided with balance spring (8) between the bottom of the bottom of described moving iron core (4) and pilot valve assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620109182 CN200989468Y (en) | 2006-10-31 | 2006-10-31 | Stepless output flow passage structure for flow proportional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620109182 CN200989468Y (en) | 2006-10-31 | 2006-10-31 | Stepless output flow passage structure for flow proportional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200989468Y true CN200989468Y (en) | 2007-12-12 |
Family
ID=38940506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620109182 Expired - Lifetime CN200989468Y (en) | 2006-10-31 | 2006-10-31 | Stepless output flow passage structure for flow proportional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200989468Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805405A (en) * | 2016-05-24 | 2016-07-27 | 北京工业大学 | Seawater hydraulic proportional flow control valve |
| CN110621925A (en) * | 2017-05-17 | 2019-12-27 | Smc 株式会社 | Pilot-operated electromagnetic valve |
-
2006
- 2006-10-31 CN CN 200620109182 patent/CN200989468Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805405A (en) * | 2016-05-24 | 2016-07-27 | 北京工业大学 | Seawater hydraulic proportional flow control valve |
| CN110621925A (en) * | 2017-05-17 | 2019-12-27 | Smc 株式会社 | Pilot-operated electromagnetic valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071212 |
|
| EXPY | Termination of patent right or utility model |