CN208518990U - A kind of hydraulic directional valve - Google Patents
A kind of hydraulic directional valve Download PDFInfo
- Publication number
- CN208518990U CN208518990U CN201821101838.XU CN201821101838U CN208518990U CN 208518990 U CN208518990 U CN 208518990U CN 201821101838 U CN201821101838 U CN 201821101838U CN 208518990 U CN208518990 U CN 208518990U
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- valve body
- end cap
- spool
- piston
- spring
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Abstract
The utility model discloses a kind of hydraulic directional valve, including valve body, spool and end cap, spool is set in valve body, valve body two sides are provided with end cap, and L-type through-hole is provided on end cap, and piston is arranged in the side that L-type through-hole is connect with valve body, spool both ends are connect with piston respectively, side of the piston far from spool and be located at end cap inner wall on be provided with spring base, spring is provided on spring base, spring is connect with piston, the junction of end cap and valve body is provided with seal plug, and 4 hydraulic fluid ports are provided on valve body.By the way that L-type through-hole is arranged to end cap, it control reversal valve can by pressure oil to the movement of spool, and then control the unlatching and closure of executive component, it is easy to operate, using flexible, when not working, reversal valve keeps middle position under the action of the spring force of both ends, and executive component remains static, good seal, securely and reliably, production efficiency is not only improved, but also reduces maintenance cost.
Description
Technical field
The utility model belongs to Hydraulic Field more particularly to a kind of hydraulic directional valve.
Background technique
Hydraulic directional valve in hydraulic control valve is a kind of Hydraulic Elements of specific use in direction valve, and common side
To control valve, due to being control of surging, so purposes occasion is different, it is mainly used in the hydraulic device hydraulic pressure system of mine hoist
The disadvantages of in system, however hydraulic directional valve has that structure is complicated during the work time, inconvenient, low efficiency, to production process
It exerts a certain influence.
Utility model content
In order to solve problem above, the utility model provides a kind of hydraulic directional valve.
The utility model is realized in this way: a kind of hydraulic directional valve, including valve body, spool and end cap, the spool are set
It is placed in valve body, the valve body two sides are provided with end cap, L-type through-hole are provided on the end cap, the L-type through-hole is in end cap table
The side in face is screw thread mouth structure, for being directly threadedly coupled the wire terminal of pilot control oil pipe, the L-type through-hole and the valve body
The side of connection is provided with piston, and the spool both ends are connect with piston respectively, side of the piston far from spool and is located at
It is provided with spring base on end cap inner wall, spring is provided on the spring base, the spring is connect with piston, the end cap and valve
The junction of body is provided with seal plug, guarantees the sealing performance of valve, and 4 hydraulic fluid ports, respectively P/T/A/ are provided on the valve body
B, P are oil inlet, and T is oil return opening, and A/B hydraulic fluid port connects operation element.
Preferably, the end cap is provided with soket head cap screw far from the side of valve body, the soket head cap screw by end cap with
Valve body is fixedly connected.
Preferably, it is provided with O-ring seal on the hydraulic fluid port, it is even closer with the connection of operation element, prevent pressure release from leaking
The generation of oily accident.
Preferably, it is provided with label on the valve body, plays mark action, the label is fixed by screws on valve body.
Preferably, it is provided with protective plate on the valve body, valve body is protected.
The beneficial effects of the utility model are: making reversal valve can be by pressure oil to valve by the way that L-type through-hole is arranged to end cap
The movement of core is controlled, and then controls the unlatching and closure of executive component, easy to operate, using flexible, when not working, commutation
Valve keeps middle position under the action of the spring force of both ends, and executive component remains static, good seal, securely and reliably, both
Production efficiency is improved, and reduces maintenance cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the positional structure schematic diagram of spool and hydraulic fluid port when the utility model does not work；
Fig. 3 is the positional structure schematic diagram of spool and hydraulic fluid port when the utility model spool moves right；
Fig. 4 is the positional structure schematic diagram of spool and hydraulic fluid port when the utility model spool is moved to the left；
In figure: 1. valve bodies；2. spool；3. end cap；4.L type through-hole；5. piston；6. spring base；7. spring；8. seal plug；
9. soket head cap screw；10.O type sealing ring；11. label；12. screw；13. protective plate；P. oil inlet；T. oil return opening.
Specific embodiment
It is further to the utility model with reference to the accompanying drawing in order to be more clearly understood that the technical solution of the utility model
Explanation.
A kind of hydraulic directional valve as Figure 1-Figure 4, including valve body 1, spool 2 and end cap 3, the spool 2 are set to
In valve body 1,1 two sides of valve body are provided with end cap 3, are provided with L-type through-hole 4 on the end cap 3, and the L-type through-hole 4 is in end cap
The side on 3 surfaces be screw thread mouth structure, for directly threaded connection the wire terminal of pilot control oil pipe, the L-type through-hole 4 with it is described
The side that valve body 1 connects is provided with piston 5, and 2 both ends of spool are connect with piston 5 respectively, and the piston 5 is far from spool 2
Side and it is located on 3 inner wall of end cap and is provided with spring base 6, is provided with spring 7 on the spring base 6, the spring 7 and piston 5
The junction of connection, the end cap 3 and valve body 1 is provided with seal plug 8, guarantees the sealing performance of valve, is provided on the valve body 1
4 hydraulic fluid ports, respectively P/T/A/B, P are oil inlet, and T is oil return opening, and A/B hydraulic fluid port connects operation element.
The end cap 3 is provided with soket head cap screw 9 far from the side of valve body 1, and the soket head cap screw 9 is by end cap 3 and valve
Body 1 is fixedly connected.
O-ring seal 10 is provided on the hydraulic fluid port, it is even closer with the connection of operation element, prevent pressure release oil accident
Generation.
It is provided with label 11 on the valve body 1, plays mark action, the label 11 is fixed on valve body 1 by screw 12.
It is provided with protective plate 13 on the valve body 1, valve body 1 is protected.
After L-type through-hole 4 when left end pours into pressure oil, spool 2 is pushed to move right, pressure oil passes through oil inlet P and oil
Mouth A enters executive component working chamber, and circuit oil liquid is returned to fuel tank through hydraulic fluid port B and oil return inlet T, formed by another chamber of executive component
Oil hydraulic circuit, executive component are started to work；After the L-type through-hole 4 of right end pours into pressure oil, spool 2 is pushed to be moved to the left, pressure
Oil enters executive component working chamber by oil inlet P and hydraulic fluid port B, and another chamber of executive component is by circuit oil liquid through hydraulic fluid port A, communication port
And intermediate duct and oil return inlet T return to fuel tank, form oil hydraulic circuit, executive component is started to work；When 4 no pressure of L-type through-hole
When oil pours into, spool 2 restores the cavity in middle position, oil inlet P and oil return inlet T and valve body 1 under the action of both ends spring 7
Not connected, executive component remains static.
The above description is only a preferred embodiment of the present invention, therefore all according to described in the utility model patent application range
The equivalent change or modification done of structure, feature and principle, be included in the scope of the utility model patent application.
Claims (5)
1. a kind of hydraulic directional valve, including valve body, spool and end cap, which is characterized in that the spool is set in valve body, described
Valve body two sides are provided with end cap, and L-type through-hole is provided on the end cap, and the L-type through-hole is screw thread in the side of end cover surface
Mouth structure, for being directly threadedly coupled the wire terminal of pilot control oil pipe, the side that the L-type through-hole is connect with the valve body is arranged
Have piston, the spool both ends are connect with piston respectively, side of the piston far from spool and be located at end cap inner wall on be arranged
There is spring base, spring is provided on the spring base, the spring is connect with piston, the junction setting of the end cap and valve body
There is seal plug, 4 hydraulic fluid ports are provided on the valve body, respectively P/T/A/B, P are oil inlet, and T is oil return opening, and A/B hydraulic fluid port connects
Connect operation element.
2. a kind of hydraulic directional valve according to claim 1, which is characterized in that the end cap is arranged far from the side of valve body
There is soket head cap screw, end cap is fixedly connected with the valve body by the soket head cap screw.
3. a kind of hydraulic directional valve according to claim 1, which is characterized in that be provided with O-ring seal on the hydraulic fluid port.
4. a kind of hydraulic directional valve according to claim 1, which is characterized in that label is provided on the valve body, it is described
Label is fixed by screws on valve body.
5. a kind of hydraulic directional valve according to claim 1, which is characterized in that be provided with protective plate on the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821101838.XU CN208518990U (en) | 2018-07-12 | 2018-07-12 | A kind of hydraulic directional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821101838.XU CN208518990U (en) | 2018-07-12 | 2018-07-12 | A kind of hydraulic directional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208518990U true CN208518990U (en) | 2019-02-19 |
Family
ID=65335636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821101838.XU Active CN208518990U (en) | 2018-07-12 | 2018-07-12 | A kind of hydraulic directional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208518990U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852976A (en) * | 2020-07-16 | 2020-10-30 | 中国石油大学(北京) | Two-position three-way hydraulic change valve |
-
2018
- 2018-07-12 CN CN201821101838.XU patent/CN208518990U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852976A (en) * | 2020-07-16 | 2020-10-30 | 中国石油大学(北京) | Two-position three-way hydraulic change valve |
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