CN206647115U - A kind of reversal valve - Google Patents
A kind of reversal valve Download PDFInfo
- Publication number
- CN206647115U CN206647115U CN201720376246.8U CN201720376246U CN206647115U CN 206647115 U CN206647115 U CN 206647115U CN 201720376246 U CN201720376246 U CN 201720376246U CN 206647115 U CN206647115 U CN 206647115U
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- CN
- China
- Prior art keywords
- valve
- holes
- swivel nut
- spring
- valve body
- 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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Abstract
A kind of reversal valve, it includes valve body, joint, core assembly, operating mechanism, two identical working chambers are provided with valve body, core assembly is respectively charged into two working chambers, A holes and B holes, the logical upper working chamber in A holes, the logical lower working chamber in B holes are provided with the middle part of valve body, twist-on working hole swivel nut, joint connection working hole swivel nut are distinguished in A holes and B holes.It is applied to coal mine hydraulic supporting.
Description
Technical field
It the utility model is related to a kind of reversal valve (manipulation valve), particularly a kind of commutation applied to coal mine hydraulic supporting
Valve.
Background technology
Chinese patent, which once disclosed, sends out hydraulic chock running valve (201220340374.4) a kind of, and valve element is changed to by valve element loose mail
Component, valve rod are placed in valve body hole, and valve rod left end is installed in the centre bore of joint, and the He of back-up ring six is housed between joint and valve rod
O-ring seven is sealed, and spring is housed on the valve rod excircle between joint right side and valve rod shoulder, is equipped between valve rod and valve body
Rectangular loop seals, and is set with valve pocket on valve rod right-hand member excircle, back-up ring three, O-ring four, back-up ring are respectively provided between valve rod and valve pocket
2nd, O-ring three seals, and valve pocket right-hand member shoulder leans against the endoporus shoulder upper limit of valve body, and valve rod right-hand member installs push rod, hydraulic pressure in hole
Support manipulates valve and is easy to assemble, and technique is more simple, and maintenance of underground is more convenient, significantly reduces back liquid resistance, improves
The operating efficiency of hydraulic system.
The applicant once designed a kind of reversal valve (201620130366.5), and it includes valve body, joint, core assembly, behaviour
Mechanism is indulged, is provided with two identical working chambers on valve body, core assembly is by liquid return valve jacket, back fluid spool, feed liquor spool, sealing
Pad, feed liquor valve pocket, spring are formed, back fluid spool insertion liquid return valve jacket, and spring is put into feed liquor valve pocket, feed liquor spool insertion liquid feed valve
Set, liquid return valve jacket screw up with feed liquor valve pocket, have sealing gasket between liquid return valve jacket and feed liquor valve pocket, feed liquor spool stretches into back liquid valve
Set, spring one end is against on liquid return valve jacket, the other end is against in feed liquor spool, and two core assemblies are as an overall plug connector
Two working chambers are respectively charged into, two joints screw in two working chambers as independent component respectively, and operating mechanism is fixed by screw
On valve body.
In fact, at present there is following defect in the reversal valve applied to coal mine underground hydraulic support frame：
1st, valve body and working hole are Contiuum types, high material consumption, low production efficiency；
2nd, there is liquid return valve jacket and upper valve sleeve, assembly technology is loaded down with trivial details；
3rd, the cam in operating mechanism and camshaft are to be connected by screw, for a long time in the presence of external force, screw meeting
Loosen, cause cam to be relatively rotated with camshaft, not only influence the function of reversal valve, and significantly shorten the use of operating mechanism
Life-span.
Utility model content
The purpose of this utility model is to overcome drawbacks described above existing for prior art, there is provided one kind is applied to underground coal mine
The reversal valve of hydraulic support, its production efficiency is high, and assembly technology simplifies.
To reach above-mentioned purpose, the solution that the utility model is taken is：A kind of reversal valve, it include valve body, joint,
Core assembly, operating mechanism, two identical working chambers are provided with valve body, core assembly is respectively charged into two working chambers, valve body
Middle part is provided with A holes and B holes, and the logical upper working chamber in A holes, B holes lead to lower working chamber, distinguish twist-on working hole swivel nut in A holes and B holes, connect
Head connection working hole swivel nut.
Described core assembly by hold set, spring, spring base, sealed steel ball, valve seat, middle valve pocket, push rod, time liquid swivel nut,
Back fluid spool is formed, and places spring and spring base in the set of end, and spring one end is against that end is put, the other end is against on spring base, bullet
Spring abutment contacts with sealed steel ball, returns liquid swivel nut and is sequentially inserted into back fluid spool and push rod from a left side, returns in having between liquid swivel nut and valve seat
Valve pocket, valve seat contact with end set.
Cam in described operating mechanism holds together with camshaft.
The utility model compared with prior art, has the positive effect that：
1st, relative to the reversal valve of current mine hydraulic bracket, valve body and the working hole of the valve use split type connection, and one
Aspect can save material, and another aspect valve body can be produced in enormous quantities, effectively improve production efficiency；
2nd, the liquid return valve jacket of former reversal valve and upper valve sleeve are held together and return liquid swivel nut by the reversal valve, simplify dress
With technique；
3rd, the cam of former commutation valve operating mechanism and camshaft are to be connected by screw, for a long time in the presence of external force,
Screw can loosen, and cause cam to be relatively rotated with camshaft, not only influence the function of reversal valve, and significantly shorten operating mechanism
Service life.The cam of the commutation valve operating mechanism holds together with camshaft, avoids split-type structural assembling institute
The error brought, while the service life of cam can be improved.
Brief description of the drawings
Fig. 1 is the structural representation of the present embodiment.
Fig. 2 is the structural representation of core assembly.
Fig. 3 is the structural representation of operating mechanism.
In figure：1st, end set, 2, spring, 3, valve body, 4, spring base, 5, sealed steel ball, 6, valve seat, 7, joint, 8, middle valve pocket,
9th, push rod, 10, return liquid swivel nut, 11, back fluid spool, 12, operating mechanism, the 13, first O-ring seal, the 14, second O-ring seal,
15th, the 3rd O-ring seal, the 16, the 4th O-ring seal, 17, working hole swivel nut, 121, cam, 122, camshaft.
Embodiment
The utility model is described again with reference to embodiment and its accompanying drawing.
Referring to Fig. 1, a kind of reversal valve, it includes valve body 3, joint 7, core assembly, operating mechanism 12, is provided with valve body 3
Two identical working chambers, core assembly are respectively charged into two working chambers, and the middle part of valve body 3 is provided with A holes and B holes, the logical upper work in A holes
Chamber, B holes lead to lower working chamber, twist-on working hole swivel nut 17 are distinguished in A holes and B holes, and joint 7 connects working hole swivel nut 17.
Referring to Fig. 1 and Fig. 2, described core assembly is by end set 1, spring 2, spring base 4, sealed steel ball 5, valve seat 6, middle valve
Set 8, push rod 9, time liquid swivel nut 10, back fluid spool 11 are formed, and place spring 2 in end set 1 and spring base 4, the one end of spring 2 are against end
On set 1, the other end be against on spring base 4, spring base 4 contacts with sealed steel ball 5, and time liquid swivel nut 10 is sequentially inserted into back liquid valve from a left side
Core 11 and push rod 9, returning has middle valve pocket 8 between liquid swivel nut 10 and valve seat 6, and valve seat 6 contacts with end set 1.
Referring to Fig. 1 and Fig. 3, the cam 121 in described operating mechanism 12 holds together with camshaft 122.
The present embodiment is FHS160/31.5 reversal valves (manipulation valve)：(1) nominal pressure 31.5MPa, (2) nominal flow rate >=
160L/min, (3) operating torque≤20NM, 125 μm of (4) working media precision, (5) cleannes≤10mg, (6) perform standard
《MT419-1995 the valve for roof support》.
Claims (3)
1. a kind of reversal valve, it includes valve body (3), joint (7), core assembly, operating mechanism (12), and valve body is provided with two on (3)
Individual identical working chamber, core assembly are respectively charged into two working chambers, it is characterized in that：A holes and B holes, A are provided with the middle part of valve body (3)
The logical upper working chamber in hole, B holes lead to lower working chamber, and twist-on working hole swivel nut (17), joint (7) connection working hole are distinguished in A holes and B holes
Swivel nut (17).
2. a kind of reversal valve according to claim 1, it is characterized in that：Described core assembly by end set (1), spring (2),
Spring base (4), sealed steel ball (5), valve seat (6), middle valve pocket (8), push rod (9), time liquid swivel nut (10), back fluid spool (11) structure
Into placement spring (2) and spring base (4) in end set (1), spring (2) one end is against on end set (1), the other end is against spring base
(4) on, spring base (4) contacts with sealed steel ball (5), returns liquid swivel nut (10) and is sequentially inserted into back fluid spool (11) and push rod from a left side
(9), returning between liquid swivel nut (10) and valve seat (6) has middle valve pocket (8), and valve seat (6) contacts with end set (1).
3. a kind of reversal valve according to claim 1, it is characterized in that：Cam (121) in described operating mechanism (12)
Held together with camshaft (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720376246.8U CN206647115U (en) | 2017-04-05 | 2017-04-05 | A kind of reversal valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720376246.8U CN206647115U (en) | 2017-04-05 | 2017-04-05 | A kind of reversal valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206647115U true CN206647115U (en) | 2017-11-17 |
Family
ID=60274575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720376246.8U Expired - Fee Related CN206647115U (en) | 2017-04-05 | 2017-04-05 | A kind of reversal valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206647115U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026876A (en) * | 2018-08-30 | 2018-12-18 | 安徽恒立通液压气动技术有限公司 | A kind of two position and four-way reversing valves for emulsion |
| CN109057838A (en) * | 2018-07-26 | 2018-12-21 | 鑫矿液压科技有限公司 | A kind of 500 liters of flow diverter valves |
-
2017
- 2017-04-05 CN CN201720376246.8U patent/CN206647115U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057838A (en) * | 2018-07-26 | 2018-12-21 | 鑫矿液压科技有限公司 | A kind of 500 liters of flow diverter valves |
| CN109026876A (en) * | 2018-08-30 | 2018-12-18 | 安徽恒立通液压气动技术有限公司 | A kind of two position and four-way reversing valves for emulsion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20171117 Termination date: 20180405 |