CN204200248U - A kind of coal mine hydraulic supporting column pilot operated check valve - Google Patents

A kind of coal mine hydraulic supporting column pilot operated check valve Download PDF

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Publication number
CN204200248U
CN204200248U CN201420669460.9U CN201420669460U CN204200248U CN 204200248 U CN204200248 U CN 204200248U CN 201420669460 U CN201420669460 U CN 201420669460U CN 204200248 U CN204200248 U CN 204200248U
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CN
China
Prior art keywords
valve
valve core
core
push rod
cover
Prior art date
Application number
CN201420669460.9U
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Chinese (zh)
Inventor
赵雪祥
陆立东
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乐清市东风煤矿设备有限公司
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Priority to CN201420669460.9U priority Critical patent/CN204200248U/en
Application granted granted Critical
Publication of CN204200248U publication Critical patent/CN204200248U/en

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Abstract

A kind of coal mine hydraulic supporting column pilot operated check valve, it comprises valve body and core assembly, a step valve pocket is provided with in valve body, core assembly integrally plug connector loads in valve pocket, core assembly is by valve pocket, little spring, big valve core, small valve core, cover for seat, big spring, push rod forms, little spring is loaded in valve pocket, big valve core and small valve core, big valve core cover small valve core, valve pocket is withstood in little spring one end, the other end gos deep into small valve core endoporus and withstands small valve core, small valve core withstands big valve core seal and forms potted line, small valve core and the small-bore ring packing of big valve core, big valve core withstands cover for seat seal and forms potted line, big spring is enclosed within push rod, push rod loads in cover for seat, circlip for hole blocks push rod, make push rod spacing, cover for seat step is withstood in big spring one end, the other end withstands push rod step, small valve core and cover for seat seal firmly, valve pocket and cover for seat thread connection, push rod tail end and valve body contact.

Description

A kind of coal mine hydraulic supporting column pilot operated check valve

Technical field

The utility model relates to a kind of column pilot operated check valve, specifically a kind of coal mine hydraulic supporting column pilot operated check valve.

Background technology

Chinese patent once disclosed a kind of plug-in conical surface and firmly sealed hydraulic control one-way valve (CN203463121U), it comprises valve body, core assembly and hydraulic control joint, the valve pocket of about one through step is provided with in valve body, valve body is provided with the A mouth, A1 mouth, A2 mouth, P1 mouth, P2 mouth, K1 mouth, the K2 mouth that communicate with valve pocket, valve pocket right-hand member loads a set of core assembly, valve pocket left end loads a hydraulic control joint, and hydraulic control joint is provided with A3 hole.

Chinese patent once disclosed a kind of hydraulic support hydraulic control one-way valve (CN203515637U), it comprises valve body, inlet P is had above valve body, liquid outlet A, control mouth K, valve body horizontal direction establishes a working chamber, piston is placed in working chamber, push rod spring is placed in piston, the step of push rod is withstood in push rod spring one end, the other end withstands separation sleeve, separation sleeve and valve seat close contact, spool is placed in valve pocket, spool and valve seat sphere seal firmly, valve core spring is placed in spool, spool is withstood in valve core spring one end, the other end withstands swivel nut, swivel nut coordinates with valve body screw thread, screw plug coordinates with valve body screw thread, screw plug and piston contact.

Chinese patent once disclosed a kind of novel mass flow hydraulic control one-way valve (CN203441509U), it comprises valve body, valve pocket, core assembly, valve seat and push rod, valve seat was provided with sap cavity, the head of push rod stretches in the sap cavity excessively of valve seat, the afterbody of push rod is positioned at outside valve seat, on push rod, also cover has return spring, the head shaft of push rod is provided with external screw thread, the position that the inside of valve seat is adjacent with crossing sap cavity is provided with limited block, limited block is provided with through hole, the inwall of through hole is provided with the internal thread with this adaptation of external screw thread on push rod, return spring one end is against on limited block, the other end is against the afterbody of push rod.

Chinese patent once disclosed a kind of cantilever support plug-in type pilot controlled check valve (CN103291343A), it comprises valve body, valve body and plinth welding, valve body has valve pocket, A1 mouth, A2 mouth, A3 mouth, P1 mouth, P2 mouth, K1 mouth, K2 mouth, K3 mouth, A1 mouth, A2 mouth, A3 mouth, P1 mouth, P2 mouth, K1 mouth, K2 mouth communicates with valve pocket, nonreturn valve core and the valve seat conical surface seal firmly, swivel nut, push rod, big spring, middle cover, valve seat, nonreturn valve core, little spring, valve pocket forms core assembly by trip bolt, core assembly integrally plug connector loads in valve pocket.

Summary of the invention

The purpose of this utility model is to provide a kind of coal mine hydraulic supporting column pilot operated check valve, and it is plug-in type hard seal structure, has precision high, reliable operation, dismounting, easy to maintenance, the advantage of long service life, life-span number of times is not less than 30,000 times.

For achieving the above object, the solution that the utility model is taked is: a kind of coal mine hydraulic supporting column pilot operated check valve, it comprises valve body and core assembly, a step valve pocket is provided with in valve body, core assembly integrally plug connector loads in valve pocket, core assembly is by valve pocket, little spring, big valve core, small valve core, cover for seat, big spring, push rod forms, little spring is loaded in valve pocket, big valve core and small valve core, big valve core cover small valve core, valve pocket is withstood in little spring one end, the other end gos deep into small valve core endoporus and withstands small valve core, small valve core withstands big valve core seal and forms potted line, small valve core and the small-bore ring packing of big valve core, big valve core withstands cover for seat seal and forms potted line, big spring is enclosed within push rod, push rod loads in cover for seat, circlip for hole blocks push rod, make push rod spacing, cover for seat step is withstood in big spring one end, the other end withstands push rod step, small valve core and cover for seat seal firmly, valve pocket and cover for seat thread connection, push rod tail end and valve body contact.

This kind of coal mine hydraulic supporting column pilot operated check valve is compared with existing coal mine hydraulic supporting column pilot operated check valve; design ingenious; there is following characteristics: adopt double spool to combine; small valve core and big valve core adopt small-bore ring packing; push rod uses less pressure to open small valve core; reduce hydraulic control one-way valve and open and close pressure oscillation, reduce the impact of highly pressurised liquid, protective valve core assembly part and Hydraulic Elements effectively.Due to plug-in type hard seal structure, therefore there is precision high, reliable operation, dismounting, easy to maintenance, the advantage of long service life, life-span number of times is not less than 30,000 times.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present embodiment.

Fig. 2 be the present embodiment stereogram.

Fig. 3 be the present embodiment right view.

Fig. 4 is the stereogram of core assembly.

Fig. 5 is the structural representation of core assembly.

In figure: 1, valve pocket, 2, little spring, 3, big valve core, 4, small valve core, 5, cover for seat, 6, big spring, 7, push rod, 8,36 × 31 × 1.5 back-up rings, 9,36 × 3.1O RunddichtringO, 10,34 × 2.4O RunddichtringO, 11,34 × 30 × 1.25 back-up rings, 12,15 × 1.9O RunddichtringO, 13,32 × 2.4O RunddichtringO, 14,32 × 28 × 1.25 back-up rings, 15,22 × 18 × 1.25 back-up rings, 16,22 × 2.4O RunddichtringO, 17, circlip for hole, 18, valve body, 19, core assembly.

Detailed description of the invention

Below in conjunction with embodiment and accompanying drawing thereof, description is remake to the utility model.

See Fig. 1-5, a kind of coal mine hydraulic supporting column pilot operated check valve, it comprises valve body 18 and core assembly 19, a step valve pocket is provided with in valve body 18, core assembly 19 integrally plug connector loads in valve pocket, core assembly 19 is by valve pocket 1, little spring 2, big valve core 3, small valve core 4, cover for seat 5, big spring 6, push rod 7 forms, little spring 2 is loaded in valve pocket 1, big valve core 3 and small valve core 4, big valve core 3 overlaps small valve core 4, valve pocket 1 is withstood in little spring 2 one end, the other end gos deep into small valve core 4 endoporus and withstands small valve core 4, small valve core 4 withstands big valve core 3 seal and forms potted line, small valve core 4 and the small-bore ring packing of big valve core 3, big valve core 3 withstands cover for seat 5 seal and forms potted line, big spring 6 is enclosed within push rod 7, push rod 7 loads in cover for seat 5, circlip for hole 17 blocks push rod 7, make push rod 7 spacing, cover for seat 5 step is withstood in big spring 6 one end, the other end withstands push rod 7 step, small valve core 4 and cover for seat 5 seal firmly, valve pocket 1 and cover for seat 5 thread connection, push rod 7 tail end contacts with valve body 18.

See Fig. 1 and Fig. 5, described valve pocket 1 clamps 36 × 3.1O RunddichtringO 9 and 36 × 31 × 1.5 back-up ring 8,36 × 3.1O RunddichtringO 9 and 36 × 31 × 1.5 back-up ring 8 and contact with valve body 18.

See Fig. 1 and Fig. 5, described cover for seat 5 clamps respectively 34 × 2.4O RunddichtringO 10 and 234 × 30 × 1.25 back-up ring 11 and 32 × 2.4O RunddichtringO 13 and 32 × 28 × 1.25 back-up ring 14,34 × 2.4O RunddichtringO 10 and 234 × 30 × 1.25 back-up ring 11 contacts with valve body 18 respectively with 32 × 2.4O RunddichtringO 13 and 32 × 28 × 1.25 back-up ring 14.

See Fig. 5, described cover for seat 5 inwall clamps 15 × 1.9O RunddichtringO 12,15 × 1.9O RunddichtringO 12 and contacts with push rod 7.

See Fig. 5, described push rod 7 clamps 22 × 2.4O RunddichtringO 16 and 22 × 18 × 1.25 back-up ring 15,22 × 2.4O RunddichtringO 16 and 22 × 18 × 1.25 back-up ring 15 and contact with cover for seat 5.

This kind of coal mine hydraulic supporting column pilot operated check valve spring used all adopts stainless steel material, improves the anti-corrosion capability of spring in the harsh medium of down-hole, ensures reliability and the high life of this valve use procedure.Rated pressure 50MPa, metered flow >=400L/min, life-span number of times is not less than 30,000 times.

Claims (5)

1. a coal mine hydraulic supporting column pilot operated check valve, it comprises valve body (18) and core assembly (19), a step valve pocket is provided with in valve body (18), core assembly (19) integrally plug connector loads in valve pocket, it is characterized in that: core assembly (19) is by valve pocket (1), little spring (2), big valve core (3), small valve core (4), cover for seat (5), big spring (6), push rod (7) forms, little spring (2) is loaded in valve pocket (1), big valve core (3) and small valve core (4), big valve core (3) cover small valve core (4), valve pocket (1) is withstood in little spring (2) one end, the other end gos deep into small valve core (4) endoporus and withstands small valve core (4), small valve core (4) withstands big valve core (3) seal and forms potted line, small valve core (4) and big valve core (3) small-bore ring packing, big valve core (3) withstands cover for seat (5) seal and forms potted line, big spring (6) is enclosed within push rod (7), push rod (7) loads in cover for seat 5, circlip for hole (17) blocks push rod (7), make push rod (7) spacing, cover for seat (5) step is withstood in big spring (6) one end, the other end withstands push rod (7) step, small valve core (4) and cover for seat (5) seal firmly, valve pocket (1) and cover for seat (5) thread connection, push rod (7) tail end contacts with valve body (18).
2. a kind of coal mine hydraulic supporting column pilot operated check valve according to claim 1, it is characterized in that: described valve pocket (1) clamps 36 × 3.1O RunddichtringO (9) and 36 × 31 × 1.5 back-up rings (8) thereof, 36 × 3.1O RunddichtringO (9) and 36 × 31 × 1.5 back-up rings (8) thereof contact with valve body (18).
3. a kind of coal mine hydraulic supporting column pilot operated check valve according to claim 1, it is characterized in that: described cover for seat (5) clamps respectively 34 × 2.4O RunddichtringO (10) and 234 × 30 × 1.25 back-up rings (11) thereof and 32 × 2.4O RunddichtringO (13) and 32 × 28 × 1.25 back-up rings (14) thereof, 34 × 2.4O RunddichtringO (10) and 234 × 30 × 1.25 back-up rings (11) thereof contact with valve body (18) respectively with 32 × 2.4O RunddichtringO (13) and 32 × 28 × 1.25 back-up rings (14) thereof.
4. a kind of coal mine hydraulic supporting column pilot operated check valve according to claim 1, it is characterized in that: described cover for seat (5) inwall clamps 15 × 1.9O RunddichtringO (12), and 15 × 1.9O RunddichtringO (12) contacts with push rod (7).
5. a kind of coal mine hydraulic supporting column pilot operated check valve according to claim 1, it is characterized in that: described push rod (7) clamps 22 × 2.4O RunddichtringO (16) and 22 × 18 × 1.25 back-up rings (15) thereof, 22 × 2.4O RunddichtringO (16) and 22 × 18 × 1.25 back-up rings (15) thereof contact with cover for seat (5).
CN201420669460.9U 2014-11-05 2014-11-05 A kind of coal mine hydraulic supporting column pilot operated check valve CN204200248U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420669460.9U CN204200248U (en) 2014-11-05 2014-11-05 A kind of coal mine hydraulic supporting column pilot operated check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420669460.9U CN204200248U (en) 2014-11-05 2014-11-05 A kind of coal mine hydraulic supporting column pilot operated check valve

Publications (1)

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CN204200248U true CN204200248U (en) 2015-03-11

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107762541A (en) * 2017-10-26 2018-03-06 鸿大智能机械有限公司 The automatic unloading device of hydraulic control one-way valve
CN107842380A (en) * 2017-10-26 2018-03-27 鸿大智能机械有限公司 The core assembly of automatic unloading hydraulic control one-way valve
CN107842382A (en) * 2017-10-27 2018-03-27 鸿大智能机械有限公司 Hydraulic control one-way valve
CN107842381A (en) * 2017-10-26 2018-03-27 鸿大智能机械有限公司 Automatic unloading hydraulic control one-way valve
CN107859524A (en) * 2017-10-27 2018-03-30 鸿大智能机械有限公司 The core assembly of hydraulic control one-way valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107762541A (en) * 2017-10-26 2018-03-06 鸿大智能机械有限公司 The automatic unloading device of hydraulic control one-way valve
CN107842380A (en) * 2017-10-26 2018-03-27 鸿大智能机械有限公司 The core assembly of automatic unloading hydraulic control one-way valve
CN107842381A (en) * 2017-10-26 2018-03-27 鸿大智能机械有限公司 Automatic unloading hydraulic control one-way valve
CN107842382A (en) * 2017-10-27 2018-03-27 鸿大智能机械有限公司 Hydraulic control one-way valve
CN107859524A (en) * 2017-10-27 2018-03-30 鸿大智能机械有限公司 The core assembly of hydraulic control one-way valve

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