CN2040538U - Three purpose valve - Google Patents
Three purpose valve Download PDFInfo
- Publication number
- CN2040538U CN2040538U CN 88208141 CN88208141U CN2040538U CN 2040538 U CN2040538 U CN 2040538U CN 88208141 CN88208141 CN 88208141 CN 88208141 U CN88208141 U CN 88208141U CN 2040538 U CN2040538 U CN 2040538U
- Authority
- CN
- China
- Prior art keywords
- plunger
- valve
- safety valve
- triple
- spring
- 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.)
- Withdrawn
Links
Landscapes
- Safety Valves (AREA)
Abstract
The utility model discloses a three purpose valve on a single hydraulic prop which is used to support roofs in coal mines, wherein, the safety valve which is a plunger piston type medium flow safety valve has the characteristics of long service life and large overflow quantity. The utility model with the advantages of high reliability and high strength can provide reliable roof control and is especially suitable for the environment with large roof pressure and bad conditions.
Description
The utility model is the triple-use valve on a kind of hydraulic prop that is used for supporting roof under the coal mine.
Publish in June, 87 in the Coal Industry Press, put down in writing in " hydraulic prop " book of being write by material supply office of Ministry of Coal Industry in the triple-use valve that present China produces, and generally is made up of one way valve, feather valve, safety valve.The maximum spillway discharge of its safety valve is 3L/min, far can not satisfy the real work needs, when top board sharply sinks suddenly; pressure in the individual prop sharply rises; safety valve has little time unloading, causes the overload of triple-use valve and individual prop to damage, and pillar is not had the safeguard protection effect.
Secondly, safety valve is to adopt flat seal, makes safety valve descend valve pad to be subjected to the effect of pre-pressure of the spring all the time in off position, and spool and valve pad are bondd, and causes opening pressure of safety valve to increase, and can not guarantee that the pillar operating characteristic is constant.
Again secondly, safety valve is short application life.Because subsurface environment is abominable, the top board load change is frequent, safety valve often is in frequent open and close state, emergency valve seat is as drift impact safety valve pad, form overlap around making safe valve pad, sealing surface damages, the safety valve seepage, cause that pillar descends, and can not reach the purpose of effective support top board.
The purpose of this utility model is to avoid above-mentioned weak point of the prior art and a kind of triple-use valve is provided, and its safety valve partly is a flow safety valve in the plunger type, effectively controls the lifting of pillar and plays the safeguard protection effect.
The purpose of this utility model can reach by following measure: the safety valve of this triple-use valve is a plunger-type structure, the plunger-type structure that it is made of safety valve housing, plunger, plunger bushing, screen pack, seal valve, spring base, spring.Plunger pair is packed in the safety valve body, and plunger bushing is provided with O RunddichtringO groove, and the end also is provided with garden shape screen pack, elimination dirt.One axial hole is arranged on the plunger and be communicated with several radial holes on the plunger.Plunger end has a spherical structure, with the spring base self-centering.By the compression spring, make the safety valve operate as normal during work.
The drawing of accompanying drawing is described as follows:
Sequence number is among the figure: left valve cylinder 1, fluid injection valve body 2, one way valve pad 3, unidirectional valve seat 4, gland nut 5, steel ball 6, volute spring 7, unloading valve pad 8, feather valve spring 9, connecting screw rod 10, safety valve body 11, screen pack 12, O RunddichtringO 13,14, plunger 15, plunger bushing 16, O RunddichtringO 17,18, right valve cylinder 19, spring base 20, safety valve spring 21, pressure regulating screw 22.
Fig. 1 is the section of structure of triple-use valve, and it is to be combined by one way valve, feather valve, safety valve.Wherein, triple-use valve is that the threaded connection by left and right sides valve cylinder 1,19 is fixed on the hydraulic prop, and 17 sealings of O RunddichtringO are arranged.Safety valve in the triple-use valve and one way valve are fixed in the left and right sides valve cylinder 1,19 by connecting screw rod 10.Fluid injection valve body 2 is connected with connecting screw rod 10, and feather valve is assemblied on the left valve cylinder 1.
Fig. 2 is the safety valve structure sectional drawing, and it is to be made of plunger 15, plunger bushing 16, screen pack 12, sealing ring 13,14,18, spring 20 and spring base 21.Plunger bushing 16 is provided with O RunddichtringO groove, and the end also is provided with garden shape screen pack 12, an axial hole is arranged on the plunger 15 and is communicated with several radial holes on the plunger 15, and there are a spherical structure and spring base 21 self-centerings in plunger 15 ends.
The utility model is described in further detail below in conjunction with accompanying drawing:
During work, highly pressurised liquid is with one-way valve opens, and high pressure liquid enters the pillar cavity of resorption, and the post of living raises roof supporting.
When the pressure in the pillar surpasses the safety valve rated pressure, promote plunger 15 and move axially, make that radial hole slips over sealing ring 18 on the plunger 15, liquid spill, when the pressure in the post be lower than the safety valve rated pressure 90% the time, plunger 15 is under the spring force effect, get back to original position, safety valve cuts out.
When falling post, rotate triple-use valve unloading handgrip, promote valve pocket and move axially.Feather valve is opened, and the emulsion in the pillar is excessive, and the post of living bounces back under deadweight and action of reset spring.
The utility model has following advantage compared to existing technology:
1. because safety valve adopts plunger-type structure, strengthened the liquid in-out latus rectum, inflow-rate of water turbine increases, and the pressure loss reduces, and when top board sharply sank, safety valve can in time unload, and pillar is played the safeguard protection effect. Its safety valve spillway discharge is increased to 16L/min-32L/min, meets the middle flow dynamics test requirements document of regulation in Ministry of Coal Industry's " MT119-85 mine hydraulic bracket valve-type formula test specification ".
2. safety valve structure is a plunger type, adopts radial seal, and sealing ring is directly spring-loaded not, and not fragile, it is little to wear and tear.Therefore higher sealing, flexible movements, reliable operation, long service life are arranged.
3. safety valve adopts the plunger pair structure, and independent plunger and plunger bushing are arranged, and good manufacturability is convenient to install, be convenient to dismounting.
Claims (5)
1, a kind of triple-use valve of being made up of one way valve, feather valve, safety valve is characterized in that safety valve is the plunger-type structure that plunger, plunger bushing constitute.
2, by the described triple-use valve of claim 1, it is characterized by the plunger-type structure that safety valve is made of safety valve housing 11, plunger 15, plunger bushing 16, screen pack 12, sealing ring 13,14,18, spring 21.
3, by claim 1 and 2 described triple-use valves, it is characterized by safety valve and adopt the radial seal of special type O RunddichtringO, plunger bushing 16 is provided with O RunddichtringO groove.
4, by claim 1 and 2 described triple-use valves, it is characterized by the safety valve end and be provided with garden shape screen pack 12, an axial hole is arranged on the plunger 15 and be communicated with several radial holes on the plunger.
5, by claim 1 and 2 described triple-use valves, it is characterized by safety valve plunger 15 ends has and spring base 20 self centering spherical structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88208141 CN2040538U (en) | 1988-07-12 | 1988-07-12 | Three purpose valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88208141 CN2040538U (en) | 1988-07-12 | 1988-07-12 | Three purpose valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2040538U true CN2040538U (en) | 1989-07-05 |
Family
ID=4842022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88208141 Withdrawn CN2040538U (en) | 1988-07-12 | 1988-07-12 | Three purpose valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2040538U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191944A (en) * | 2011-05-09 | 2011-09-21 | 巨隆集团芜湖兴隆液压有限公司 | Inserted medium flow upright post hydraulic control one-way valve |
-
1988
- 1988-07-12 CN CN 88208141 patent/CN2040538U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191944A (en) * | 2011-05-09 | 2011-09-21 | 巨隆集团芜湖兴隆液压有限公司 | Inserted medium flow upright post hydraulic control one-way valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201037425Y (en) | Safety valve | |
| CN204677215U (en) | A kind of liquids double-rows pilot-operated type high-flow safety valve | |
| CN2040538U (en) | Three purpose valve | |
| CN203515616U (en) | 500L/min safety valve used for coal mine hydraulic support | |
| CN2242988Y (en) | Guiding-type safety valve | |
| CN2302379Y (en) | Single-body hydraulic prop three-purpose valve | |
| CN217632381U (en) | Controllable plunger for drainage and gas production of gas well based on digital oil field construction | |
| CN2300752Y (en) | Hydraulic cylinder load balance locking device | |
| CN201280413Y (en) | Lifting jack | |
| CN211009050U (en) | Hydraulic circuit breaker exhaust apparatus | |
| CN2467833Y (en) | Compound sealing double-water draining safety valve | |
| CN2304760Y (en) | Two speed separate hydraulic jack pump | |
| CN209294437U (en) | A kind of hydraulic valve easily debugged | |
| CN2326819Y (en) | Nitrogen filling vehicle | |
| CN201396173Y (en) | Safety valve with nominal flow of 500L/min | |
| CN201884355U (en) | Hydraulic controlled high flow lifting distribution valve for large-sized mining electric wheel dumper | |
| CN2818957Y (en) | High-pressure float valve | |
| CN212079260U (en) | Well head flat valve | |
| CN2327849Y (en) | Passive butterfly check valve | |
| CN219588194U (en) | Hydraulic control one-way valve | |
| CN2363138Y (en) | Filter piston type hydraulic control valve | |
| CN2032653U (en) | Three-purpose high pressure valve | |
| CN2059680U (en) | Three-purpose valve for high flow manometry | |
| CN2361893Y (en) | Fuel contents controllable multi-stage hydraulic cylinder | |
| CN220687363U (en) | Elastic anti-impact device for single telescopic upright post |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |