CN206257320U - The strong safety valve of stain resistance - Google Patents
The strong safety valve of stain resistance Download PDFInfo
- Publication number
- CN206257320U CN206257320U CN201621344397.7U CN201621344397U CN206257320U CN 206257320 U CN206257320 U CN 206257320U CN 201621344397 U CN201621344397 U CN 201621344397U CN 206257320 U CN206257320 U CN 206257320U
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure chamber
- input pressure
- stain resistance
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Safety Valves (AREA)
Abstract
The utility model discloses a kind of strong safety valve of stain resistance.Including valve body, control valve element and corresponding poppet valve core in the valve body, input pressure chamber and the poppet valve core cavity of mutual UNICOM are provided with the valve body, actuating valve seat is provided between the input pressure chamber and poppet valve core cavity, the control valve element and corresponding poppet valve core are located at the input pressure chamber and poppet valve core cavity by corresponding back-moving spring and pressure spring respectively, and the input pressure chamber is connected with the oil suction chamber of valve body.The strong safety valve structure of the stain resistance is compact, stain resistance is strong, fault rate is low, long service life.
Description
Technical field
The utility model is related to a kind of hydraulic construction machine.More particularly to it is a kind of strong for hydraulic construction machine stain resistance
Safety valve.
Background technology
In engineering machinery, deadweight safety valve is a kind of basic building block.At present, deadweight safety valve is using process
In, because hydraulic system association part is more, cleannes are difficult to control in perfect condition, it is to avoid not because the presence of bulky grain debris causes
Card valve phenomenon, to cause whole hydraulic system to break down.This phenomenon accounting in whole hydraulic system operation troubles statistics
It is larger.
Utility model content
The purpose of this utility model is directed to the deficiency of prior art presence, there is provided a kind of strong safety valve of stain resistance.
The strong safety valve structure of the stain resistance is compact, stain resistance is strong, fault rate is low, long service life.
The technical scheme of the strong safety valve of the utility model stain resistance includes valve body, the control valve in the valve body
Core and corresponding poppet valve core, are provided with input pressure chamber and the poppet valve core cavity of mutual UNICOM, the input pressure in the valve body
Actuating valve seat is provided between power chamber and poppet valve core cavity, the control valve element and corresponding poppet valve core are respectively by corresponding multiple
Position spring and pressure spring are located at the input pressure chamber and poppet valve core cavity, the oil suction chamber phase of the input pressure chamber and valve body
UNICOM.
Corresponding filter screen is provided between the input pressure chamber and the oil suction chamber of valve body.
The poppet valve core cavity is respectively equipped with corresponding oil outlet with oil suction chamber.
Its valve body of the strong safety valve of the utility model stain resistance forms isolated area with valve element, by high pressure chest（Oil suction chamber A,
Input pressure chamber B）With low pressure chamber（Poppet valve core cavity C）Separate, the processing of its valve body is simple, good processability, machining accuracy are high, institute
The related important spare part having is assembled in valve body, compact conformation, and processing and assembly precision are high.
Brief description of the drawings
Fig. 1 is the strong embodiment schematic diagram of safety valve one of the utility model stain resistance.
Specific embodiment
To further appreciate that the technical solution of the utility model, the utility model is made by embodiment and with reference to accompanying drawing now
Further illustrate book.
As shown in figure 1, in the present embodiment, the strong safety valve of its stain resistance includes valve body 1, filter screen 2, valve element 3, reset bullet
Spring 4, actuating valve seat 5, poppet valve core 6, pressure spring 7 etc..
Oil suction chamber A, input pressure chamber B and poppet valve core cavity C, oil suction chamber the A setting of mutual UNICOM are respectively equipped with valve body 1
In corresponding one end of valve body 1, the corresponding other ends of the poppet valve core cavity C located at valve body.Poppet valve core cavity and input pressure chamber B are logical
Cross actuating valve seat 5 mutually to separate, control valve element and corresponding poppet valve core pass through corresponding back-moving spring 4 and pressure spring 7 respectively
Located at input pressure chamber and poppet valve core cavity.
Oil suction chamber A is by controlling valve element damping hole and input pressure chamber B UNICOMs.Filter screen 2 is arranged at oil suction chamber A and is pressed with input
Control valve element damping hole porch between the B of power chamber.Poppet valve core cavity and oil suction chamber are respectively equipped with corresponding oil outlet a and fuel-displaced
Hole d.
Hydraulic oil enters input pressure chamber from oil suction chamber A chambers by filter screen, control valve element damping hole under pressure（I.e.
Control spool chamber）In B, filter screen precision is higher, and bulky grain thing is blocked in outside input pressure chamber, and input pressure chamber is with hydraulic pressure
Oily constantly feed pressure is stepped up, when power of the action of hydraulic force on poppet valve core acts on poppet valve core more than pressure spring
On power when, the e conical surfaces are opened with the K angles that valve seat formed are carried on poppet valve core, and hydraulic oil enters poppet valve from input pressure chamber
Core cavity simultaneously flows out from fuel-displaced a, and input pressure cavity pressure is also less than oil suction chamber therewith, and oil suction chamber and input pressure chamber moment form
Pressure difference, control valve element is moved under action of hydraulic force to valve seat end is carried, and oil suction chamber hydraulic oil just flows out from oil outlet d, enters
The pressure of oil pocket is also decreased, and is formed safety valve and is opened.Realize the effect of step-down.When input pressure chamber, action of hydraulic force exists
When power on poppet valve core acts on the power on poppet valve core less than pressure spring, poppet valve core forms K angles envelope with valve seat is carried
Oil, pressure spring produces compression, promotes control valve element to be moved to the left cut-out oil suction chamber hydraulic oil and is flowed out from oil outlet d, liquid
Force feed pressure regulating cavity is separated with low pressure chamber, forms safety valve oil circuit closure.
Claims (3)
1. a kind of strong safety valve of stain resistance, including valve body, control valve element and corresponding poppet valve in the valve body
Core, it is characterized in that be provided with input pressure chamber and the poppet valve core cavity of mutual UNICOM in the valve body, the input pressure chamber with carry
Be provided with actuating valve seat between movable valve plug chamber, the control valve element and corresponding poppet valve core respectively by corresponding back-moving spring and
Pressure spring is located at the input pressure chamber and poppet valve core cavity, and the input pressure chamber is connected with the oil suction chamber of valve body.
2. the strong safety valve of stain resistance according to claim 1, it is characterized in that the oil-feed of the input pressure chamber and valve body
Corresponding filter screen is provided between chamber.
3. the strong safety valve of stain resistance according to claim 1, it is characterized in that the poppet valve core cavity is distinguished with oil suction chamber
It is provided with corresponding oil outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621344397.7U CN206257320U (en) | 2016-12-08 | 2016-12-08 | The strong safety valve of stain resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621344397.7U CN206257320U (en) | 2016-12-08 | 2016-12-08 | The strong safety valve of stain resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206257320U true CN206257320U (en) | 2017-06-16 |
Family
ID=59029719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621344397.7U Expired - Fee Related CN206257320U (en) | 2016-12-08 | 2016-12-08 | The strong safety valve of stain resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206257320U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027345A (en) * | 2018-08-13 | 2018-12-18 | 武汉理工大学 | A kind of dust-proof safety valve of self-cleaning |
-
2016
- 2016-12-08 CN CN201621344397.7U patent/CN206257320U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027345A (en) * | 2018-08-13 | 2018-12-18 | 武汉理工大学 | A kind of dust-proof safety valve of self-cleaning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170616 Termination date: 20181208 |