CN87206338U - Three-purpose valve with throttle discharging - Google Patents
Three-purpose valve with throttle discharging Download PDFInfo
- Publication number
- CN87206338U CN87206338U CN 87206338 CN87206338U CN87206338U CN 87206338 U CN87206338 U CN 87206338U CN 87206338 CN87206338 CN 87206338 CN 87206338 U CN87206338 U CN 87206338U CN 87206338 U CN87206338 U CN 87206338U
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- China
- Prior art keywords
- valve
- triple
- fluid injection
- unloading
- feather
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Abstract
The utility model discloses a three-purpose valve with the functions of throttle and unload of a monomer hydraulic pressure support post under a coal mine well, belonging to the field of mechanical engineering. The three-purpose valve comprises a liquor inlet one-way valve, a safety valve and an unloading valve. The additional arrangement of a filter improves the anti-soil ability of a valve and reduces the abrasion of three purpose valve body and the monomer hydraulic pressure support post caused by the soil. Simultaneously, the filter has the advantages of easy detach, convenient cleaning and repeatable use. The utility model is provided with an annular throttling gap, so that the scouring force of working fluid flowing through the valve pad of the unloading valve is decreased. Therefore, the service life of the three-purpose valve is prolonged, the hydraulic impact at the time of unloading is reduced, and the security of the overall system is enhanced.
Description
The present invention relates to a kind of is the matched triple-use valve of hydraulic prop under the coal mine, belongs to mechanical engineering field.
At present, hydraulic prop at home and abroad is widely used, triple-use valve be hydraulic prop when setting prop feed liquor, when overload protection, unload when falling post must use element, the triple-use valve of usefulness is made up of three parts usually.That is: feed liquor one way valve, safety valve and feather valve, its structure is chewed main parts in addition such as (4), feather valve valve pad (5), feather valve spring (7), safety valve (9), left valve cylinder (1) and right valve cylinder (10) by one-way valve seat (2), steel ball (3), fluid injection and is constituted as shown in Figure 1.Its operating principle is: during setting prop, the fluid injection gun muzzle is enclosed within fluid injection and chews on (4), after the high-pressure emulsion that fluid injection gun penetrates is washed steel ball (3) open, enters individual prop through via hole (8), makes pillar rise roof supporting.After fluid injection gun was extracted, feather valve valve pad (5) tightly was pressed on the plane (6) of left valve cylinder under feather valve spring and s acting in conjunction, prevents that highly pressurised liquid from leaking.Steel ball (3) has higher sealability also being pressed under the highly pressurised liquid effect on the one-way valve seat (2).When crushing, individual prop loads, and as surpassing the permission pressure-bearing scope of individual prop, safety valve (9) drainage is discharged a part of liquid, makes the setting of the pressure maintenance safety valve in the individual prop, to guarantee the safety of system.When falling post, force safety valve (9) to move to left by special tool, compression feather valve spring (7), making fluid injection chew (4) separates together with the plane (6) of feather valve valve pad (5) with left valve cylinder, high pressure liquid stream penetrates from the slit on feather valve valve seat (5) and plane (6), and individual prop unloading whole work period is finished.
There is following shortcoming in existing triple-use valve: high velocity liquid stream directly washes away feather valve valve pad (5) and makes its very quick-wearing and cause losing efficacy during unloading; Chew the not process filtration of liquid that (4) enter individual prop from fluid injection, be mingled in the dirts such as coal dust in the working solution, enter pillar inside, stick on one-way valve seat (2) and the feather valve valve pad (5), make seal failure in company with working solution.Dirt causes support piston bar and wear of piston-rings simultaneously, and pillar was lost efficacy.
At above weak point, the objective of the invention is: on the basis of original triple-use valve, set up part, improve the cleanliness factor of working solution, make the stain resistance of valve strengthen; Change structure, the gap throttling of setting up feather valve improves the life-span, reduces hydraulic shock, thereby improves the condition of work of hydraulic system.
The present invention proposes a kind of new construction, as shown in Figure 2.Strainer (11) is placed on fluid injection and chews between (4) and the one-way valve seat (2), according to certain cooperation, chews in fluid injection and forms one section torus knot ebb interval between (4) and the left valve cylinder (1); Safety valve (9) in the triple-use valve adopts the encapsulating method of various ways, as: flat seal, spherical sealing, conical surface seal and plunger seal.The one way valve form of triple-use valve can be used sphere, taper, plane and plunger type.Its pattern of the strainer that this structure adopted (11) also can be multiple, as filter net type, refill formula and sintered type.
Below in conjunction with embodiment, the present invention is described in detail: according to certain cooperation, chew in fluid injection and form one section torus knot ebb interval between (4) and the left valve cylinder (1), the length of throttle clearance is 0.5～4 millimeter.Gap width is between 0.01～0.4 millimeter.Make that flow was controlled when pillar inner high voltage liquid was discharged, the controlled liquid stream of this flow, when the plane of flow through feather valve valve pad (5) and left valve cylinder (1) and the slit between plane (6), flow velocity is much littler, thereby alleviated washing away to feather valve valve pad (5), also alleviate hydraulic shock simultaneously, guaranteed security of system.Prolonged the life-span of triple-use valve.Chew in fluid injection and place a net type filter (11) between (4) and the one-way valve seat (2), so dirt can not enter individual prop inside in the working solution, the stain resistance of triple-use valve has strengthened, and is also convenient during while dismounting strainer (11), needn't take the inner part in addition of valve apart.
This " triple-use valve with throttle discharging " compares with former triple-use valve, and it is long to have a life-span, and stain resistance is strong, reduces hydraulic shock, guarantees security of system, anti abrasive advantage. The economic benefit height.
Claims (4)
1, a kind of " triple-use valve with throttling unloading " chewed (4), feather valve valve pad (5), feather valve spring (7), safety valve (9), left valve cylinder (1) and right valve cylinder (10) etc. by strainer (11), one-way valve seat (2), steel ball (3), fluid injection and formed; It is characterized in that: chew in (4) in fluid injection, one-way valve seat (2) is equipped with strainer (11) before; Chew in fluid injection between (4) and the left valve cylinder (1) by certain cooperating, form the torus knot ebb interval, the sealing of its safety valve and one way valve is sphere, taper, plane and plunger type.
2, triple-use valve according to claim 1 is characterized in that: strainer (11) is filter net type, refill formula and sintered type.
3, triple-use valve according to claim 1 is characterized in that: (4) and left valve cylinder (1) torus knot ebb interval are before chewed in fluid injection, and its gap width is between 0.01～0.4 millimeter.
4, triple-use valve according to claim 1 is characterized in that: the chock length of annular gap is between 0.5～4 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87206338 CN87206338U (en) | 1987-04-09 | 1987-04-09 | Three-purpose valve with throttle discharging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87206338 CN87206338U (en) | 1987-04-09 | 1987-04-09 | Three-purpose valve with throttle discharging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87206338U true CN87206338U (en) | 1988-04-13 |
Family
ID=4821931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87206338 Withdrawn CN87206338U (en) | 1987-04-09 | 1987-04-09 | Three-purpose valve with throttle discharging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87206338U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101766863A (en) * | 2008-12-29 | 2010-07-07 | 北京谊安医疗系统股份有限公司 | Safety overflow valve |
| CN102330560A (en) * | 2011-09-20 | 2012-01-25 | 中煤北京煤矿机械有限责任公司 | Mine hydraulic support stand column with tight-pressing resistance device |
| CN102588724A (en) * | 2012-03-09 | 2012-07-18 | 三一重机有限公司 | Pressure-controllable oiling device for tension device |
-
1987
- 1987-04-09 CN CN 87206338 patent/CN87206338U/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101766863A (en) * | 2008-12-29 | 2010-07-07 | 北京谊安医疗系统股份有限公司 | Safety overflow valve |
| CN102330560A (en) * | 2011-09-20 | 2012-01-25 | 中煤北京煤矿机械有限责任公司 | Mine hydraulic support stand column with tight-pressing resistance device |
| CN102330560B (en) * | 2011-09-20 | 2013-12-18 | 中煤北京煤矿机械有限责任公司 | Mine hydraulic support stand column with tight-pressing resistance device |
| CN102588724A (en) * | 2012-03-09 | 2012-07-18 | 三一重机有限公司 | Pressure-controllable oiling device for tension device |
| CN102588724B (en) * | 2012-03-09 | 2014-10-01 | 三一重机有限公司 | Pressure-controllable oiling device for tension device |
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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 |