CN205013427U - Novel pressure reducing valve - Google Patents
Novel pressure reducing valve Download PDFInfo
- Publication number
- CN205013427U CN205013427U CN201520794729.0U CN201520794729U CN205013427U CN 205013427 U CN205013427 U CN 205013427U CN 201520794729 U CN201520794729 U CN 201520794729U CN 205013427 U CN205013427 U CN 205013427U
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- Prior art keywords
- valve
- valve body
- main valve
- main
- liquid outlet
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- Expired - Fee Related
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Abstract
The utility model relates to a hydraulic control valve technical field especially relates to the relief pressure valve, specific relief pressure valve that has the security performance of saying so. By valve body, main valve, unload liquid mouth, inlet P, liquid outlet A, runner, safety device and liquid outlet T and constitute, the main valve is established on the valve body intermediate position, it all establishes on the valve body to unload liquid mouth, inlet P, liquid outlet A and liquid outlet T, the runner is established on the valve body, safety device establishes at the valve body lower extreme. A novel pressure reducing valve, simple structure has, easy maintenance, the spillage is low, responds advantages such as fast. Realized simultaneously in time protecting the relief pressure valve through safety device when the load is broken down, and then realized the function of protection hydraulic circuit and equipment.
Description
Technical field
The utility model relates to hydraulic control valve technical field, particularly relates to reduction valve, specifically a kind of reduction valve with Safety performance.
Background technique
Outlet pressure is made to be called reduction valve lower than the control valve of inlet pressure by the method for throttling, the effect of reduction valve controls outlet pressure, difference according to Rule adjusting can be divided into 3 types: (1) Fixed pressure reducing valve, the steady pressure lower than inlet pressure is obtained in outlet, this reduction valve is the most conventional, is sometimes directly called reduction valve; (2) Fixed differential reducing valve, keeps the pressure difference imported and exported to be definite value; (3) Proprutioning pressure reducing valve, keeps the pressure ratio of import and export constant.The basic principle of reduction valve is that variable restrictor and pressure differential pressure feed back.Wherein definite value and Fixed differential reducing valve compare effect by the feedback of pressure differential pressure and input quantity, and automatically regulate the size of the valve port orifice size that reduces pressure, incoming pressure, delivery pressure are fixing at the area of spool effect.By the feedback of delivery pressure and comparing of incoming pressure, the orifice size of automatic regulating valve mouth is that the ratio active area of constrained input pressure is close, kept stable.
But in actual use, if reduction valve exports the unexpected stop motion of load connected, can produce a reverse load, namely reduction valve outlet pressure can constantly increase, the spool of reduction valve can on move and use oral fluid body and cannot reversely get rid of, thus accident occurs to cause equipment impaired etc.
The reduction valve of a kind of new structure that the utility model provides, by this new structure, achieves and protects reduction valve when load is broken down in time by safety installations, and then realizes the function of protection oil hydraulic circuit and equipment.Performance has simultaneously leakage rate little, respond the advantages such as fast, more excellent in traditional effect separately using valve.
Summary of the invention
Technical problem to be solved in the utility model makes up the deficiencies in the prior art, provides a kind of structure simple, easy to maintenance, respond fast novel compositions valve.
Technical problem to be solved in the utility model realizes by following technological scheme.
By a kind of Depressure valve provided by the utility model, by valve body, main valve, unload liquid mouth, liquid entering hole P, liquid outlet A, runner, safety installations and liquid outlet T and form, described main valve is located on valve body neutral position; Described liquid mouth, liquid entering hole P, liquid outlet A and the liquid outlet T of unloading all is located on valve body; Described runner is located on valve body; Described safety installations is located at valve body lower end.
Described main valve is made up of main valve plug, main spool spring and main valve adjusting bolt, and described main valve plug is located on valve body, and upper end has groove, and lower end acts on runner; Described main spool spring is located in valve body, and one end acts in main valve plug groove, and one end is connected with main valve adjusting bolt; Described main valve adjusting bolt is located on the upside of main valve, is connected with main spool spring.
Described safety installations is made up of safe spool, safety spring and safe adjusting bolt, and described safe spool is located on the downside of valve body, one end effect runner, and one end is connected with safety spring; Described safety spring is located in the middle of safety installations, connection safety valve core and safe adjusting bolt; Described safe adjusting bolt is located on the downside of valve body.
Safe spool in safety installations described in the utility model preferentially selects taper valve core.
Main valve plug described in the utility model preferentially selects sliding valve structure, adopts the motion mode moved up and down.Main valve plug lower end is connected with safety installations by runner, when load is broken down time, protect main valve plug in time by safety installations, and then realizes the function of protection oil hydraulic circuit and equipment.
The utility model provides a kind of Depressure valve, the lower end of this new structure at main valve plug compared with traditional is provided with safety installations, when main valve plug lower end fluid pressure is excessive, safety installations can realize decompression function, solve when load is broken down, cause liquid to flow out, cause reduction valve internal pressure excessive and the problem causing valve body to damage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1. valve body; 2. main valve; 3. unload liquid mouth; 4. liquid entering hole P; 5. liquid outlet A; 6. runner; 7. safety installations; 8. liquid outlet T; 21. main valve plugs; 22. main spool springs; 23. main valve adjusting bolts; 71. safe spools; 72. safety springs; 73. safe adjusting bolts.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
Be illustrated in figure 1 a kind of Depressure valve structural representation of the utility model, by valve body 1, main valve 2, unload liquid mouth 3, liquid entering hole P4, liquid outlet A5, runner 6, safety installations 7 and liquid outlet T8 and form, described main valve 2 is located on valve body 1 neutral position; Described liquid mouth 3, liquid entering hole P4, liquid outlet A5 and the liquid outlet T8 of unloading all is located on valve body 1; Described runner 6 is located on valve body 1; Described safety installations 7 is located at valve body 1 lower end.
As shown in Figure 1, described main valve 2 is made up of main valve plug 21, main spool spring 22 and main valve adjusting bolt 23, and described main valve plug 21 is located on valve body 1, and upper end has groove, and lower end acts on runner 6; Described main spool spring 22 is located in valve body 1, and one end acts in main valve plug 21 groove, and one end is connected with main valve adjusting bolt 23; Described main valve adjusting bolt 23 is located on the upside of main valve 2, is connected with main spool spring 22.
As shown in Figure 1, described safety installations 7 is made up of safe spool 71, safety spring 72 and safe adjusting bolt 73, and described safe spool 71 is located on the downside of valve body 1, one end effect runner 6, and one end is connected with safety spring 72; Described safety spring 72 is located in the middle of safety installations 7, connection safety valve core 71 and safe adjusting bolt 73; Described safe adjusting bolt 73 is located on the downside of valve body 1.
The spring force of described main spool spring 22 is regulated by main valve adjusting bolt 23.
The spring force of described safety spring 72 is arranged by safe adjusting bolt 73, and its value is arranged between safety pressure and working pressure.
Its specific works process is as follows:
Normal using process: the fluid from oil hydraulic pump enters in main valve 2 from liquid entering hole P4, normally open valve mouth through between the lower end cylinder shoulder and valve body 1 of main valve plug 21 flows into liquid outlet A5, main valve plug 21 lower end fluid can flow in runner 6 simultaneously, and the fluid in runner 6 can act on bottom main valve plug 21 with on the safe spool 71 in safety installations 7.When the pressure of fluid matasomatism bottom main valve plug 21 is less than the spring force of main spool spring 22 pairs of main valve plugs 21, main valve plug 21 is in least significant end, and fluid can constantly flow in liquid outlet A5 from liquid entering hole P5 through valve port.When the pressure of fluid matasomatism bottom main valve plug 21 is greater than the spring force of main spool spring 22 pairs of main valve plugs 21, main valve plug 21 can move up under the effect of lower end hydrodynamic pressure, the valve port opening of main valve plug 21 lower end cylinder shoulder and valve body 1 is reduced, and then make to reduce from liquid entering hole P4 to the flow of liquid outlet A5, cause the reduction of liquid outlet A5 place pressure.Because secondary oil pocket does not take back mailbox, so unload liquid mouth 3 place must take back fuel tank separately.When flow reduces, the pressure of main valve plug 21 lower end fluid can reduce, and when hydrodynamic pressure is less than spring force, under the spring-force driven dual of main spool spring 22, main valve plug 21 can move down again, main valve plug 21 is increased, augmented flow with the valve port opening of valve body 1.Like this by the pressure reduction change between hydrodynamic pressure and the spring force of main spool spring 22, utilize main valve plug 21 to move up and down and repeatedly regulate, realize the stable of outlet pressure.
Safety protection process: when load runs into fault, the fluid in main valve 2 can reverse outflow, and pressure constantly increases simultaneously.When main valve plug 21 times end pressures are greater than the spring force of main spool spring 22, main valve plug 21 will on move, block retrograde fluid head piece.The fluid at such liquid outlet A5 and runner 6 place cannot be got rid of in time, and build-up of pressure constantly increases.When the pressure of runner 6 inner fluid is greater than the safety pressure set by safety spring 72; safe spool 71 will be opened; fluid in liquid outlet A5 and runner 6 will flow into liquid outlet T8 by safe spool 71; thus the pressure reduced in valve body 1; avoid valve body 1 fluid pressure constantly raise and damage the consequence of reduction valve, thus realize the function of safety protection.
More than show and describe basic principle of the present utility model, major character and advantage.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. a Depressure valve, by valve body (1), main valve (2), unload liquid mouth (3), liquid entering hole P (4), liquid outlet A (5), runner (6), safety installations (7) and liquid outlet T (8) and form, it is characterized in that: described main valve (2) is located on valve body (1) neutral position; Described liquid mouth (3), liquid entering hole P (4), liquid outlet A (5) and the liquid outlet T (8) of unloading all is located on valve body (1); Described runner (6) is located on valve body (1); Described safety installations (7) is located at valve body (1) lower end.
2. a kind of Depressure valve according to right 1, described main valve (2) is made up of main valve plug (21), main spool spring (22) and main valve adjusting bolt (23), it is characterized in that: described main valve plug (21) is located on valve body (1), upper end has groove, and lower end acts on runner (6); Described main spool spring (22) is located in valve body (1), and one end acts in main valve plug (21) groove, and one end is connected with main valve adjusting bolt (23); Described main valve adjusting bolt (23) is located at main valve (2) upside, is connected with main spool spring (22).
3. a kind of Depressure valve according to right 1, described safety installations (7) is made up of safe spool (71), safety spring (72) and safe adjusting bolt (73), it is characterized in that: described safe spool (71) is located at valve body (1) downside, one end effect runner (6), one end is connected with safety spring (72); Described safety spring (72) is located in the middle of safety installations (7), connection safety valve core (71) and safe adjusting bolt (73); Described safe adjusting bolt (73) is located at valve body (1) downside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520794729.0U CN205013427U (en) | 2015-10-12 | 2015-10-12 | Novel pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520794729.0U CN205013427U (en) | 2015-10-12 | 2015-10-12 | Novel pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013427U true CN205013427U (en) | 2016-02-03 |
Family
ID=55212036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520794729.0U Expired - Fee Related CN205013427U (en) | 2015-10-12 | 2015-10-12 | Novel pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205013427U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113002783A (en) * | 2021-04-08 | 2021-06-22 | 安徽砺德特种动力科技有限公司 | Electric control type pump body, driving device for unmanned aerial vehicle and fluid transmission method |
-
2015
- 2015-10-12 CN CN201520794729.0U patent/CN205013427U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113002783A (en) * | 2021-04-08 | 2021-06-22 | 安徽砺德特种动力科技有限公司 | Electric control type pump body, driving device for unmanned aerial vehicle and fluid transmission method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160203 Termination date: 20161012 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |