CN2319570Y - Insertion hydraulic prop controlling valve - Google Patents

Abstract

The utility model relates to an insertion hydraulic support operating valve, which is composed of a valve body, a valve core component and an operating device. The valve body is in a flat board shape whose longitudinal direction is provided with a left valve hole and a right valve hole whose upper parts and lower parts are communicated in mutual parallel. The two valve holes are simultaneously communicated with a liquid inlet hole and a liquid return hole. The inner parts of the left valve hole and the right valve hole are respectively provided with a set of valve core component. The structures of the two sets of the valve core components are same. Each set of valve core component comprises an end joint, a big spring, a valve core, a protective sleeve, a valve seat, a pressing spiral plug, a pressing ring and a push rod from the lower part to the upper part. The match surface of each valve core component is provided with a sealing ring. The utility model has the advantages of light weight, long service life, maintenance time decrease and labor intensity decrease. The utility model can be repaired and the components can be replaced under a well in the failure.

Description

Plug-in hydraulic support control valve

The utility model relates to the coal mine fully-mechanized mining support apparatus, specifically a kind of novel control valve of hydraulic support.

A kind of control valve with first load self-insurance is disclosed in utility model patent CN85205289, be CF-PZ125/320 control valve and ZC control valve, shortcomings such as these valves have complex structure because of design factor, and in addition the number of packages amount is many, and application life is short, maintenance load is big as:

1. weight is big, monolithic valve weight 5.5kg.

2. working hole is in the two sides of valve, and shared installing space is big.And working hole and valve body are an integral body, and its working hole is non-exchange once making, and use very flexible.

3. liquid return hole is opened and is relied on back hydraulic coupling and flow size, and time liquid is unreliable, has fraud to press phenomenon often.

4. return liquid sealing and pay employing metal and polyformaldehyde sealing, reliability and anti-liquid contamination ability are relatively poor

5. the feed liquor sealing is paid and is in when working under the rated pressure flow, and flow rate of liquid is higher, and sealing mat is short application life, opens and closes number of times about 5000 times.

6. the number of packages amount is many in addition, processing and assembling trouble, and workload is big.Fault has been arranged, can not change valve part in addition in the down-hole, complete set of valves or valve block must have been transported to aboveground place under repair, it is rack-mount again it to be transported to the down-hole after fixing.Dismantling and installing and needing to pay heavy manual labor in the transportation up and down, labour intensity is big.

The purpose of this utility model is to overcome above-mentioned deficiency, and it is in light weight to provide a kind of plug-in hydraulic support control valve to have, and long service life has had fault to repair and to change other part in the down-hole, reduces maintenance time and reduces labor intensity.

The purpose of this utility model is achieved in that

A kind of plug-in hydraulic support control valve is made up of valve body, core assembly and manipulation device, and manipulation device comprises the briquetting that is contained in the lid, cam and handgrip; It is characterized in that:

Valve body is flat plate shape, and it vertically has left and right two valve openings that communicate up and down that are parallel to each other, and its positive middle part has inlet opening and hole for back flow to communicate with left and right valve opening simultaneously;

One group of core assembly respectively is housed in left and right valve opening, and the structure of two groups of core assemblies is identical, and every group of core assembly is followed successively by from bottom to top:

End joint is threadedly connected to valve opening in addition;

Big spring is loaded between the terrace and hold-down ring lower surface in the big shoulder hole of end joint;

Spool, the ladder endoporus of its underpart ladder cylindrical and valve body matches; Its post jamb has some radial direction through hole to communicate with the advancing of valve body, liquid return hole respectively after sliding;

Sheath, its cylindrical and valve body inner bore match;

Valve seat, its cylindrical ladder cylinder respectively with valve body inner bore, the recess on sheath endoporus and spool top matches, and the large rectangle joint ring is housed in the annular groove of its lower end cylindrical;

Compress screw plug, be connected with the valve body screw with external screw thread, its lower surface and valve seat upper surface join;

Hold-down ring cooperates with the inner bolt hole of spool with external screw thread, between its cylindrical top and spool endoporus little rectangular seal is housed;

Push rod is contained in spool and compresses in the endoporus of screw plug, and the thin bar in this top stretches out in the little shoulder hole of screw plug, and there is radial hole at its middle part with central blind hole and the communication of spool endoporus annular groove; On the convex hole limit on push rod top and the push rod cylindrical between the spool upper surface, be set with little spring, have the protuberance of recess and hold-down ring upper end corresponding in the peritreme of the blind hole of its cylinder lower end;

At working hole and advance, on the path between the hole for back flow, on the fitting face of each core assembly, be equipped with and prevent the sealing ring that leaks.

The utility model has following actively useful effect:

1. the two-bit triplet spool of this valve is designed to the plug-in structure, and dismounting is very convenient, particularly can keep in repair at mining face under mine, needn't tear the just replaceable spool of valve body open, valve pads etc. are part in addition, and the heavy manual labor of go into the well in the minimizing transportation and dismounting valve can reduce the pollution to system again.

2. advance back liquid sealing and pay and all adopt rubber pad, improved the antifouling property of valve.

3. key component adopts stainless steel and chemical nickel plating to improve the whole resistance to corrosion of valve.

4. reduce the feed liquor sealing and pay the flow velocity at place, reduce washing away of liquid stream, improved the application life of sealing mat significantly, open and close number of times and can reach more than 10000 times.

5. working hole adopts rear-mounted being threaded, and is convenient to change the sebific duct that adapts to different-diameter and connects.

6. back fluid spool has back-moving spring, the liquid fraud can not take place back press phenomenon.

7. this valve body is long-pending little in light weight, simple in structure, and the number of packages amount is few in addition, is easy for installation and maintenance.

This valve compares with the CF-PZ125/320 control valve

The title project	The utility model	CF-PZ125/320
			Monolithic valve weight	5kg	5.5kg
Two-position three-way valve is number of packages in addition	6	11
			Working hole is arranged	Rear-mounted, replaceable	Bilateral type, not interchangeable
Return the liquid reset mode	Spring reset, reliable	Reset by returning hydraulic coupling, unreliable
			Advance back the liquid sealing form	Be rubber seal	Feed liquor is a rubber pad, returns liquid polyformaldehyde in addition
The two-bit triplet valve arrangement	The plug-in down-hole is easily changed	Non-plug-in

Now in conjunction with the accompanying drawings with preferred embodiment:

Fig. 1 is a structural representation of the present utility model, for partly cuing open elevation.

Fig. 2 is the design of part figure of spool among Fig. 1.

Fig. 3 is the design of part figure of valve seat among Fig. 1.

Fig. 4 is the design of part figure of push rod among Fig. 1.

Plug-in hydraulic support control valve of the present utility model is made up of valve body, core assembly and manipulation device, and its structure please refer to Fig. 1.

Valve body 3 is flat plate shape, and it vertically has left and right two valve openings that communicate up and down that are parallel to each other, and its positive middle part has inlet opening 19 and hole for back flow 20 to communicate with left and right valve opening simultaneously;

One group of core assembly respectively is housed in left and right valve opening, and the structure of two groups of core assemblies is identical, and every group of core assembly is followed successively by from bottom to top:

End joint 1 for the tubular body of ladder centre bore is arranged, is threadedly connected to valve opening in addition, and sealing ring is equipped with in the junction;

Big spring 2 is loaded between the lower surface of terrace in the big shoulder hole of end joint 1 and hold-down ring 4;

Spool 6 please refer to Fig. 2, and for the cylinder of ladder cylindrical and ladder endoporus is arranged, the ladder endoporus of its underpart ladder cylindrical and valve body 1 matches; Described spool has some radial direction through hole 601 to communicate with the advancing of valve body, hole for back flow 19,20 respectively after sliding, and is provided with the joint ring that is contained in the annular groove 602 between the fitting face of the valve body inner bore of these radial hole 601 upper and lower both sides and spool cylindrical;

Sheath 18 is the open circles annular, and its cylindrical and valve body inner bore match;

Valve seat 17 please refer to Fig. 3, for cylindrical has the ladder post, interior circle has the circle cover of shoulder hole, its cylindrical ladder cylinder respectively with the endoporus of valve body 3, the recess on the endoporus of sheath 18 and spool 6 tops matches, and in the annular groove 171 of its lower end cylindrical large rectangle joint ring 8 is housed;

Compress screw plug 9, for the round casing of ladder endoporus is arranged, be connected with the valve body screw with external screw thread, the upper surface of its lower surface and valve seat 17 joins, and is provided with the sealing ring that is contained in the annular groove between the endoporus of its cylindrical and valve body 3 and between the upper surface of cylindrical lower surface and valve seat 17;

Hold-down ring 4 for the round casing of taper type endoporus is arranged, cooperates with the inner bolt hole of external screw thread with spool 6, and little rectangular seal 5 is housed between the endoporus of its cylindrical top and spool 6;

Push rod 7 please refer to Fig. 4, for there is thin bar 701 on the top, lower central has the cylinder of blind hole 702, is contained in spool 6 and compresses in the endoporus of screw plug 9, the thin bar 701 in this top stretches out in the little shoulder hole of screw plug 9, and its middle part has radial hole 703 that central blind hole and spool endoporus annular groove are linked up; In the annular groove between valve opening outside the upper-lower position of this annular groove and push rod cylindrical upper and lower joint ring is housed respectively; On the convex hole limit on push rod top and the push rod cylindrical between the spool upper surface, be set with little spring 16, peritreme in the blind hole of its cylinder lower end has the protuberance of recess and hold-down ring upper end corresponding, when push rod moved down, this recess was inserted in the protuberance of hold-down ring and by the sealing of the upper sealing ring of hold-down ring cylindrical;

Manipulation device is by the briquetting 10 that is contained in the lid, and cam 11 and handgrip 13 are formed;

Briquetting 10 has left and right two, is the long flat bodily form, and each is articulated in the lid with bearing pin 15, the inclined-plane, base of every briquetting just with core assembly in the thin bar that from compress the screw plug endoporus, stretches out of push rod align mutually;

Cam 11 is articulated in the lid with camshaft 14, this camshaft connects the outer handle 13 of gland, the cam and arranged on left and right sides respectively has outstanding projection to align the limit of stretching out of briquetting 10, handle left/turn right when moving, this left and right projection stir respectively that push rod that left and right briquetting 10 makes in two groups of core assemblies one group moves and the working hole 19,20 that makes its center respectively with advance, one of liquid return hole is communicated with.

Operating principle of the present utility model:

This valve inlet 19 is connected with the hydraulic pump high-pressure outlet, and liquid return hole 20 is connected with the hydraulic pump liquid return hole.Working hole 21,22 is communicated with the plunger shaft and the rod end chamber of hydraulic cylinder (jack) respectively by pipeline.Its course of work is, driving cam promotion briquetting left when handgrip is moved moves down push rod, at first be pressed on the little rectangular seal pad, closed the path of liquid return hole, when push rod continues to move down, push rod promotion hold-down ring moves down (this moment, big little spring was compressed) simultaneously together with spool so the large rectangle sealing mat is left in the upper end of spool, produce the gap, highly pressurised liquid in the inlet 19 is entered in the groove by the gap at this moment, enter the push rod centre bore by the circular hole on the push rod circumference again and flow to working hole 21, the plunger shaft or the rod end chamber that lead to hydraulic cylinder (jack) by connecting line, jack is moved, the liquid in another chamber of jack flows to another working hole 22 of control valve by pipeline at this moment, this moment, the two-position three-way valve on the right was in meta, return sap cavity and communicate with liquid return hole 20, the liquid that therefore flows to working hole 22 flows back in the hydraulic pump fuel tank through liquid return hole 20 by returning sap cavity.After the jack action is finished, move handgrip to centre position, left side two-position three-way valve is owing to be returned to initial position under the elastic force effect of big little spring at this moment, and inlet has been closed at this moment in the position as shown, has opened liquid return hole simultaneously.Desire to make the jack counteragent, only need handgrip is moved to other direction, its operating principle is same as described above.

Claims (1)

1, a kind of plug-in hydraulic support control valve is made up of valve body, core assembly and manipulation device, and manipulation device comprises the briquetting that is contained in the lid, cam and handgrip; It is characterized in that:

Valve body is flat plate shape, and it vertically has left and right two valve openings that communicate up and down that are parallel to each other, and its positive middle part has inlet opening and hole for back flow to communicate with left and right valve opening simultaneously;

One group of core assembly respectively is housed in left and right valve opening, and the structure of two groups of core assemblies is identical, and every group of core assembly is followed successively by from bottom to top:

End joint is threadedly connected to valve opening in addition;

Big spring is loaded between the terrace and hold-down ring lower surface in the big shoulder hole of end joint;

Spool, the ladder endoporus of its underpart ladder cylindrical and valve body matches; Its post jamb has some radial direction through hole to communicate with the advancing of valve body, liquid return hole respectively after sliding;

Sheath, its cylindrical and valve body inner bore match;

Valve seat, its cylindrical ladder cylinder respectively with valve body inner bore, the recess on sheath endoporus and spool top matches, and the large rectangle joint ring is housed in the annular groove of its lower end cylindrical;

Compress screw plug, be connected with the valve body screw with external screw thread, its lower surface and valve seat upper surface join;

Hold-down ring cooperates with the inner bolt hole of spool with external screw thread, between its cylindrical top and spool endoporus little rectangular seal is housed;

Push rod is contained in spool and compresses in the endoporus of screw plug, and the thin bar in this top stretches out in the little shoulder hole of screw plug, and there is radial hole at its middle part with central blind hole and the communication of spool endoporus annular groove; On the convex hole limit on push rod top and the push rod cylindrical between the spool upper surface, be set with little spring, have the protuberance of recess and hold-down ring upper end corresponding in the peritreme of the blind hole of its cylinder lower end;

At working hole and advance, on the path between the hole for back flow, on the fitting face of each core assembly, be equipped with and prevent the sealing ring that leaks.

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