CN208686972U - A kind of step's flux type injection valve of multistage pressure control - Google Patents
A kind of step's flux type injection valve of multistage pressure control Download PDFInfo
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- CN208686972U CN208686972U CN201820829919.5U CN201820829919U CN208686972U CN 208686972 U CN208686972 U CN 208686972U CN 201820829919 U CN201820829919 U CN 201820829919U CN 208686972 U CN208686972 U CN 208686972U
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Abstract
A kind of step's flux type injection valve of multistage pressure control, including guide's valve pocket, positioning ring, pilot valve at different levels, reset spring, main valve plug, main valve housing；In use, by the first order to the mobile stepped opening degree for generating main valve plug of third level pilot valve step type, and then forming Q when different pilot control pressure acts in pilot valve0、Qa、Qab、QabcThe flow of four specifications, positioning ring define the upward range of three pilot valves；The utility model have the advantages that switch speed it is fast, it is low to environmental requirement, be easily installed and safeguard, can according to rolling mill practice need export needed for class flow the advantages of.
Description
Technical field
The utility model relates to fluid flow control technology fields, and in particular to a kind of step's flux of multistage pressure control
Type injection valve.
Background technique
Metal thick plate band supplied materials is rolled by metal sheet strip using multi roller band milling train in metallurgy industry, such as producing
Copper strips, punching press aluminium strip, autobody sheet of electric elements etc..Spray technology lubrication is needed to be situated between during milled sheet band
Matter (ROLLING OIL or emulsion) is lubricated and cools down with band to roll, will cause in the operation of rolling when greasy property deficiency
The thickness of strip fluctuation aggravation that required rolling power increases, roll and band contact surface coefficient of friction increase, roll out,
The increase of skin-friction coefficient causes roller surface temperature to increase, roller consumption is aggravated；Roll table can not only be made when cooling performance deficiency
The temperature in face increases, and also results in the raising of the temperature of band and then the intensity of band and plasticity is caused to change, correctly
It controls the flow of cooling medium and the Bu Tong part that eject position can make roll generates different degrees of realization of expanding with heat and contract with cold to plate
The control of shape.The flow by adjusting technological lubrication cooling medium along barrel length direction is rolled with controlling in modern times rolling industry
Important process side of the means of strip shape as plate shape in a kind of adjustment operation of rolling after the convexity of roller and then improvement rolling
Method.Hot at present, used on technological lubrication cooling injection beam in cold-rolling mill injection valve is switch valve, using compressed air, electricity
Magnet carries out opening or closing control.It can only be automatically adjusted by changing the regulating valve opening degree being connected in main pipe rail with spray beam
The total flow in some area, can not adjust the rate of discharge of single injection valve in entire spray beam or spray beam.It is watched in view of using
Narrow installation maintenance space in leaching pendular ring border and memorial archway locating for the expensive price of dress system, spray beam, thus, it is necessary to
A kind of step's flux type injection valve for the multistage pressure control that class flow needed for exporting can be needed according to rolling mill practice.
Utility model content
In order to overcome the disadvantages of the above prior art, the purpose of this utility model is to provide a kind of controls of multistage pressure
Step's flux type injection valve can need to export according to rolling mill practice the flow of different class.
In order to achieve the above object, the technical solution that the utility model is taken are as follows:
A kind of step's flux type injection valve of multistage pressure control, including valve body 10 are provided with valve deck 1 at the top of valve body 10,
Main valve housing 9, guide's valve pocket 2 are mounted on valve body 10 by connector by valve deck 1, and guide's valve pocket 2 is pressed on main valve housing 9, pilot valve
Positioning ring 3 is provided in set 2, the pilot valves at different levels that setting is successively arranged in positioning ring 3, inner most pilot valve and multiple
Position spring 7 is pressed in 8 upper end of main valve plug together, and main valve plug 8 is located in main valve housing 9；Pilot valve upper ends at different levels connect pilot control
Oily inlet port X, 8 lower end of main valve plug connect working media inlet port P, the input end of the side connection nozzle of main valve plug 8.
Further, the pilot valves at different levels being successively arranged include third level pilot valve 4, and third level pilot valve 4 is set
It sets in positioning ring 3, second level pilot valve 5, setting first in second level pilot valve 5 is set in third level pilot valve 4
Grade pilot valve 6, first-stage pilot valve core 6 and reset spring 7 are pressed in 8 upper end of main valve plug.
Further, the stroke of the third level pilot valve 4, second level pilot valve 5 and first-stage pilot valve core 6
Respectively a, a+b, a+b+c, the opening degree of main valve plug 8 are a, a+b, a+b+c, form Q0、Qa、Qab、QabcThe stream of four specifications
Amount.
The utility model has the beneficial effects that
1, the utility model uses multi-stage guide valve core, can be provided containing zero delivery according to process requirement in interior plurality of specifications
Flow.
2, the utility model remains that oil liquid exists in pilot control part, and pilot pressure conversion speed is fast, difference rule
It can be achieved to be switched fast between lattice flow.
3, safe and reliable in spray environment without the electrical component more demanding to temperature and humidity in memorial archway.
4, it occupies little space in memorial archway, is easily installed and safeguards.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.
Shown in referring to Fig.1, a kind of step's flux type injection valve of multistage pressure control, including valve body 10,10 top of valve body
It is provided with valve deck 1, main valve housing 9, guide's valve pocket 2 are mounted on valve body 10 by connector by valve deck 1, and guide's valve pocket 2 is pressed in main valve
On set 9, it is provided with positioning ring 3 in guide's valve pocket 2, third level pilot valve 4, third level pilot valve 4 are set in positioning ring 3
Interior setting second level pilot valve 5, is arranged first-stage pilot valve core 6 in second level pilot valve 5, first-stage pilot valve core 6 with
Reset spring 7 is pressed in 8 upper end of main valve plug, and main valve plug 8 is located in main valve housing 9；Connection pilot control oil in pilot valve upper end at different levels
Inlet port X, 8 lower end of main valve plug connect working media inlet port P, the input end of the side connection nozzle of main valve plug 8.
Working principle of the utility model is:
By taking the control of level Four pilot pressure as an example, and px1> px2> px3> px4。
With AnIndicate that pilot control pressure acts on the effective active area in n-th grade of pilot valve, third level pilot valve
The stroke of core 4, second level pilot valve 5 and first-stage pilot valve core 6 is respectively a, a+b, a+b+c, with FuIndicate main valve plug to
Suffered viscous friction when upper movement, axial rub resistance caused by frictional force, hydraulic card clamping force at sealing, main valve plug 8
The resultant force of inertia force indicates the coefficient of elasticity of reset spring 7, working media inlet pressure p with k1Act on having on main valve plug 8
Effect active area is Amd, nozzle inlet pressure p2The effective active area acted on main valve plug 8 is Amc, when main valve plug 8 is opened
Steady-state fluid force suffered by main valve plug is respectively F when mouth is a, a+b, a+b+csa、Fsab、Fsabc；
Due between pilot valve or pilot valve and the positioning viscous friction of interannular, hydraulic card clamping force, axial friction,
The inertia force of pilot valve is much smaller than Fu, therefore ignore.
When work, it is mounted in spray beam by installing attachment 11, pilot control oil first control oil inlet port X at different levels
Pilot valve upper end；Working media enters 8 lower end of main valve plug through working media inlet port P, with inlet pressure p1, nozzle import
Pressure p2It is respectively acting on main valve plug upwards.Work as px=px1When, due to px1·A1≥p1·Amd+p2·Amc+Fu-k·x0,
Pilot control pressure px1Under the action of third level pilot valve 4 and second level pilot valve 5 be crushed on guide's valve pocket 2, first
Main valve plug 8 is pressed on main valve housing 9 by grade pilot valve 6 and reset spring 7 together, and main valve plug 8 is closed, the flow Q of injection valve0=
0；Work as px=px2When, due to px2·(A1+A2)≥p1·Amd+p2·Amc-Fu-Fsa-k(x0+ a) and px2·A1≤ p1·Amd+
p2·Amc+Fu-Fsa-k(x0+ a), at this time in pilot control pressure px2Under the action of third level pilot valve 4 and second level guide
Spool 5 is crushed on guide's valve pocket 2, while first-stage pilot valve core 6 is withstood in second level pilot valve 5 by main valve plug 8, main valve
The opening degree of core 8 is a, the flow of injection valve is Qa；Work as px=px3When, due to px3·(A1+A2+A3)≥ p1·Amd+p2·Amc-
Fu-Fsab-k(x0+ a+b) and px3·(A1+A2)≤ p1·Amd+p2·Amc+Fu-Fsab-k(x0+ a+b), at this time in pilot control pressure
Power px3Under the action of third level pilot valve 4 be crushed on guide's valve pocket 2, while second level pilot valve 5 is by first order guide
Spool 6 is withstood on 4 in third level pilot valve, and first-stage pilot valve core 6 is withstood in second level pilot valve 5 by main valve plug 8, main valve
The opening degree of core 8 is equal to a+b, the flow of injection valve is Qab；Work as px=px4When, due to px4·(A1+A2+A3)≤ p1·Amd+
p2·Amc-Fu-Fsabc-k·(x0+ a+b+c), third level pilot valve 4 withstands on positioning ring 3 by second level pilot valve 5 at this time
On, second level pilot valve 5 is withstood in third level pilot valve 4 by first-stage pilot valve core 6, and first-stage pilot valve core 6 is led
Spool 8 is withstood in second level pilot valve 5, and the opening degree of main valve plug 8 is a+b+c, the flow of injection valve is Qabc, main valve at this time
The opening degree of core is maximum, injection valve reaches maximum stream flow.
Claims (3)
1. a kind of step's flux type injection valve of multistage pressure control, which is characterized in that including valve body (10), valve body (10) top
It is provided with valve deck (1), main valve housing (9), guide's valve pocket (2) are mounted on valve body (10), guide's valve pocket by connector by valve deck (1)
(2) it is pressed on main valve housing (9), is provided with positioning ring (3) in guide's valve pocket (2), setting is successively arranged at different levels in positioning ring (3)
Pilot valve, inner most pilot valve and reset spring (7) are pressed in main valve plug (8) upper end together, and main valve plug (8) is located at main valve
It covers in (9)；Pilot valve upper ends at different levels connect pilot control oil inlet port X, and main valve plug (8) lower end connects working media inlet port
P, the input end of the side connection nozzle of main valve plug (8).
2. a kind of step's flux type injection valve of multistage pressure control according to claim 1, which is characterized in that successively cover
If pilot valves at different levels include third level pilot valve (4), third level pilot valve (4) setting is in positioning ring (3), third
Second level pilot valve (5) are set in grade pilot valve (4), first-stage pilot valve core is set in second level pilot valve (5)
(6), first-stage pilot valve core (6) and reset spring (7) are pressed in main valve plug (8) upper end.
3. a kind of step's flux type injection valve of multistage pressure control according to claim 2, which is characterized in that described
The stroke of third level pilot valve (4), second level pilot valve (5) and first-stage pilot valve core (6) is respectively a, a+b, a+b+
C, the opening degree of main valve plug (8) are a, a+b, a+b+c, form Q0、Qa、Qab、QabcThe flow of four specifications.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820829919.5U CN208686972U (en) | 2018-05-30 | 2018-05-30 | A kind of step's flux type injection valve of multistage pressure control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820829919.5U CN208686972U (en) | 2018-05-30 | 2018-05-30 | A kind of step's flux type injection valve of multistage pressure control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208686972U true CN208686972U (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820829919.5U Active CN208686972U (en) | 2018-05-30 | 2018-05-30 | A kind of step's flux type injection valve of multistage pressure control |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488395A (en) * | 2018-05-30 | 2018-09-04 | 中国重型机械研究院股份公司 | A kind of step's flux type injection valve of multistage pressure control |
-
2018
- 2018-05-30 CN CN201820829919.5U patent/CN208686972U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488395A (en) * | 2018-05-30 | 2018-09-04 | 中国重型机械研究院股份公司 | A kind of step's flux type injection valve of multistage pressure control |
| CN108488395B (en) * | 2018-05-30 | 2024-04-02 | 中国重型机械研究院股份公司 | Stepped flow type injection valve controlled by multistage pressure |
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