CN2463632Y - Large flow safety valve - Google Patents
Large flow safety valve Download PDFInfo
- Publication number
- CN2463632Y CN2463632Y CN 01201590 CN01201590U CN2463632Y CN 2463632 Y CN2463632 Y CN 2463632Y CN 01201590 CN01201590 CN 01201590 CN 01201590 U CN01201590 U CN 01201590U CN 2463632 Y CN2463632 Y CN 2463632Y
- Authority
- CN
- China
- Prior art keywords
- valve
- guiding valve
- sealing device
- spring
- utility
- 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 - Lifetime
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- Safety Valves (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
Abstract
The utility model relates to a large flow safety valve, which is particularly suitable for the hydraulic support on the coal face with an obvious pressure impacting head plate. The utility model is composed of a filter screen 1, a valve body 2, a slide valve 3, a sealing device 4, a spring seat 5, a spring barrel 6, a spring 7 and a pressure regulating screw 8, wherein, the sealing device 4 is a composite sealing device composed of an elastic sealing ring and a sheath made of special material, the slide valve 3 is provided with a safety limiting and liquid buffering balancing hole, and the cavity of the valve body is provided with a structure corresponding to the slide valve and the composite sealing device. The sealing device of the utility model is improved greatly, and the aperture of an overflow hole is enlarged, so the utility model can instantly unload big flow, and has improved sealing performance and extended service life of the valve.
Description
The utility model relates to a kind of coal mine hydraulic supporting high-flow safety valve, particularly is applicable to the safety valve of the coal-face hydraulic support of obvious surge pressure top board condition.
At present, because be subjected to the restriction of air-proof condition, the safety valve peak rate of flow of China only is 100L/min, the drainage ability is little, as strengthening outage again, not only seal life is low, and also extreme difference of the working stability of valve, and this valve is as using having under the obvious bump top board condition, when top board is pressed impact suddenly, can not very fast unloading, can cause the hydraulic support momentary overload and damage, also bring serious threat for personal safety.According to investigations, in India and domestic Datong District, mining areas such as Shen Fu, east victorys, Beipiao City can not satisfy technical requirements because of the relieving capacity of safety valve, repeatedly cause support to crush, oil cylinder cracking back timber pressure such as wears at accident.
The purpose of this utility model is for improving seal arrangement, strengthens the aperture of overflow hole, thereby reaches the moment unloading of big flow, the sealability and the life-span of improving valve.
A kind of high-flow safety valve, form by filter screen 1, valve body 2, guiding valve 3, seal arrangement 4, spring seat 5, spring strut 6, spring 7 and voltage regulation screw 8, it is characterized in that the combined sealed device that sheath that described seal arrangement 4 is made by elastic seal ring and special material is formed, guiding valve 3 has the spacing and fluid cushion equalizing orifice of safety, body cavity has the structure that adapts with guiding valve and combination sealing arrangement, there is the groove of an installation filter screen valve body 2 inner chamber outer ends, with guiding valve 3 smooth cylindrical cavity movingly, there is the groove of an installation combination sealing arrangement body cavity inner end.The spacing limited step that adopted of guiding valve 3 safety has the fluid cushion equalizing orifice that becomes angle to arrange with axis before the step, guiding valve 3 ends have a plurality of larger-diameter overflow hole of evenly arranging along circumference.The sheath that special material is made is the ring skeleton of being made by the very little macromolecular material of a kind of friction factor, and its endoporus cooperates with guiding valve 3, and outer rim is provided with the sealed groove O RunddichtringO of packing into and forms combined sealed device.
The utility model compared with prior art has following advantage: because the sheath that seal arrangement has adopted elastic seal ring and special material to make has improved sealability, improved the working life of valve 1..2. owing to adopted the sliding valve structure of the spacing and fluid cushion equalizing orifice of band safety, body cavity is designed to the structure that adapts with guiding valve and seal arrangement, makes it when instantaneous big flow unloading, reduces the power of surging effectively and impacts.
Fig. 1 is the structural representation of high-flow safety valve.
The setting of the utility model filter screen 1 is to prevent that pollutants such as dust and iron filings from entering the performance that guiding valve 3 influences valve.When outside when carrying the fluid pressure make in the controlled device and surpassing the set pressure of valve, guiding valve 3 moves axially at fluid pressure effect lower edge valve body 2 endoporus, pressure spring 7, overflow hole shifts out seal area, realize instantaneous fast discharging, after pressure balance, guiding valve 3 resets under spring 7 power effects, returns to former setting state.Can set up the unloading pressure value in advance according to the system pressure needs by voltage regulation screw 8, New-type safety valve can be to be threaded with being connected of controlled system, also can connect with the quick change inserting mode.
Successfully develop at present the high-flow safety valve series product of 160L/min to 1000L/min, to adapt to the needs of coal-face hydraulic support.
Claims (4)
1. high-flow safety valve, form by filter screen (1), valve body (2), guiding valve (3), seal arrangement (4), spring seat (5), spring strut (6), spring (7) and voltage regulation screw (8), it is characterized in that the combined sealed device that sheath that described seal arrangement (4) is made by elastic seal ring and special material is formed, guiding valve (3) has the spacing and fluid cushion equalizing orifice of safety, and body cavity has the structure that adapts with guiding valve and combination sealing arrangement.
2. high-flow safety valve as claimed in claim 1 is characterized in that there is the groove of an installation filter screen described valve body (2) inner chamber outer end, and with guiding valve (3) smooth cylindrical cavity movingly, there is the groove of an installation combination sealing arrangement body cavity inner end.
3. high-flow safety valve as claimed in claim 1, it is characterized in that the spacing limited step that adopted of described guiding valve (3) safety, the fluid cushion equalizing orifice that becomes angle to arrange with axis is arranged before the step, and guiding valve (3) end has a plurality of larger-diameter overflow hole of evenly arranging along circumference.
4. high-flow safety valve as claimed in claim 1, it is characterized in that the sheath that described special material is made is the ring skeleton of being made by the very little macromolecular material of a kind of friction factor, its endoporus cooperates with guiding valve (3), and outer rim is provided with the sealed groove O RunddichtringO of packing into and forms combined sealed device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01201590 CN2463632Y (en) | 2001-01-19 | 2001-01-19 | Large flow safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01201590 CN2463632Y (en) | 2001-01-19 | 2001-01-19 | Large flow safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2463632Y true CN2463632Y (en) | 2001-12-05 |
Family
ID=33623581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01201590 Expired - Lifetime CN2463632Y (en) | 2001-01-19 | 2001-01-19 | Large flow safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2463632Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758643A (en) * | 2012-06-21 | 2012-10-31 | 乐清市东风煤矿设备有限公司 | Safety valve |
| CN105298522A (en) * | 2015-11-20 | 2016-02-03 | 巨隆集团芜湖兴隆液压有限公司 | Safety valve |
| CN111637260A (en) * | 2020-06-10 | 2020-09-08 | 盐城支点机械制造有限公司 | Valve convenient for replacing filter screen |
-
2001
- 2001-01-19 CN CN 01201590 patent/CN2463632Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758643A (en) * | 2012-06-21 | 2012-10-31 | 乐清市东风煤矿设备有限公司 | Safety valve |
| CN105298522A (en) * | 2015-11-20 | 2016-02-03 | 巨隆集团芜湖兴隆液压有限公司 | Safety valve |
| CN111637260A (en) * | 2020-06-10 | 2020-09-08 | 盐城支点机械制造有限公司 | Valve convenient for replacing filter screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110119 Granted publication date: 20011205 |