CN202047860U - Automatic Y-type differential pressure relief valve - Google Patents
Automatic Y-type differential pressure relief valve Download PDFInfo
- Publication number
- CN202047860U CN202047860U CN2011200591785U CN201120059178U CN202047860U CN 202047860 U CN202047860 U CN 202047860U CN 2011200591785 U CN2011200591785 U CN 2011200591785U CN 201120059178 U CN201120059178 U CN 201120059178U CN 202047860 U CN202047860 U CN 202047860U
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- valve body
- valve
- piston
- cabin
- cylindrical hole
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Abstract
The utility model relates to an automatic Y-type differential pressure relief valve comprising a valve body, two guide sleeves, a valve rod and a piston, wherein the upper end of the outer part of the valve body is provided with an outer screw thread, and the upper part of the inner side of the valve body is provided with a cylindrical hole, and the lower part of the valve body is provided with a horn hole, an axial slender hole is arranged on the side wall, one end of the axial slender hole is communicated with the atmosphere outside a cabin, and the other end is connected with an air chamber enclosed by the valve body and a piston; a radial air outlet is arranged on the side wall, and one end of the radial air outlet is communicated with air inside the cabin, and the other end is connected with an air chamber enclosed by the valve body and the valve core; the cylindrical hole face and the upper end face of the valve body are intersected into a sealing line; the guide sleeves are in clearance fit in the cylindrical hole of the valve body and are positioned at the upper part and the lower part of the radial air outlet respectively, and a plurality of axial air vents are arranged on the wall of the upper guide sleeve; the valve rod is in clearance fit in the upper guide sleeve and the lower guide sleeve; and the piston is a deformable elastic plate, and the upper end of the valve rod is provided with a frustum-shaped valve core, and the lower part of the valve rod is connected with the piston. The automatic Y-type differential pressure relief valve has the advantages of simple and reasonable structure, and automatic and flexible pressure relief, and the pressure relief valve is convenient and fast to install, etc.
Description
Technical field
The utility model relates to a kind of Y type differential pressure relief valve, relates in particular to a kind of form of structure of Y type differential pressure automatic decompression valve, is specially adapted to the automatic adjusting of mining survival capsule inner air pressure, belongs to gas-pressure component manufacturing technology field.
Background technology
Be in the positive confinement state in the cabin in mining survival capsule because during hedging, for satisfying hedging personnel's oxygen uptake needs, oxygen cylinder that has been equipped with in the cabin or oxygen generator must constantly provide the oxygen of needed by human body, thereby the air pressure in the cabin will constantly increase.For guaranteeing that the air pressure in the cabin is in normal condition all the time, existing mining survival capsule is provided with cabin inner air pressure display list and manual relief valve, when the hedging personnel find that from air manometer air pressure in the cabin exceeds normal range (NR), can discharge air to out of my cabin by manual control relief valve, thereby the air pressure in the cabin is returned in the normal range (NR).Such control method is cumbersome and must arrange the special messenger to note the reading of air manometer at any time, and this has increased by one heavy psychological burden undoubtedly again for being in high-strung hedging personnel.Therefore it is necessary designing a kind of can self-relieving relief valve being used in the mining survival capsule.
Summary of the invention
Can not self-regulating defective at present mining survival capsule inner air pressure, the utility model provides a kind of Y type differential pressure automatic decompression valve, to realize the automatic adjusting purpose of mining survival capsule inner air pressure.
To achieve these goals, the utility model takes following technical scheme to implement: it comprises a valve body, the valve body outer upper ends is shaped on external screw thread, inside upper part is provided with cylindrical hole, the bottom is provided with bellmouth orifice, sidewall is provided with an axial elongated hole, one end of this axial elongated hole communicates with atmosphere out of my cabin, the other end links to each other with the air chamber that valve body and piston surround, also be provided with radially venthole on the sidewall, radially gas communicates in an end and the cabin of venthole, the other end links to each other with the air chamber that valve body and spool surround for this; Described cylindrical hole face and valve body upper surface intersect potted line; Two matched in clearance are in the valve body cylindrical hole and lay respectively at the radially fairlead of venthole upper and lower, and the wall of last fairlead is provided with many axial air vents; The valve rod of one matched in clearance in upper and lower fairlead; One piston; One trim ring; A plurality of trip bolts, it is characterized in that described piston be one can deformation elastic plate, it presses by a trim ring and a plurality of trip bolt and is sealed on the baseplane of valve body bellmouth orifice; The upper end of described valve rod is provided with a frustum spool, the middle part is provided with fine thread, be rotary with adjusting nut and fastening screw nut on the fine thread, be provided with a spring between adjusting nut and the last fairlead, stem lower portion is passed piston and by backing plate, pad and holding screw compression seal and be connected on the piston.But the utility model is by the dull and stereotyped generation of the deformation elasticity sex change between two air chambers of pressure differential driving of two air chambers of valve inner, thereby drive valve rod and make axially reciprocating, realize the logical of two air chambers and close, reach gases at high pressure in the cabin to the purpose of pressure release out of my cabin.
The utlity model has advantages such as simple and reasonable, quick and easy for installation, that pressure release is flexible automatically.
Description of drawings
Accompanying drawing 2 is the utility model left side sectional structure schematic diagram.
In attached Fig. 1 and 2: fairlead on 1 valve body, 2 spools, 3 valve rods, 4,5 jump rings, 6 adjusting nuts, 7 star-like sealing rings, 8 holding screws, 9 rubber pistons, 10 trip bolts, 11 pads, 12 trim rings, 13 backing plates, 14O RunddichtringO, 15 times fairleads, 16 fastening screw nuts, 17 ventholes, 18 springs, 19 elongated hole
The specific embodiment
Shown in accompanying drawing 1,2, upper outside at valve body 1 is provided with external screw thread, inside upper part is provided with cylindrical hole, the bottom is provided with bellmouth orifice, axial elongated hole 19, venthole 17 radially are set on the sidewall, and make that cylindrical hole and bellmouth orifice are coaxial to communicate, axially elongated hole 19 is from the straight-through bellmouth orifice in the upper surface of valve body 1; The cylindrical hole face of valve body 1 and the intersection, upper surface of valve body 1 are ground to form potted line; Rubber piston 9 is pressed by trim ring 12 and trip bolt 10 and be sealed on the inboard baseplane of bellmouth orifice; Many axial air vents are set on the wall of last fairlead 4, with last fairlead 4, down fairlead 15 matched in clearance in the cylindrical hole of valve body 1 and the upper and lower part that lays respectively at venthole radially with jump ring 5 axial location, and between fairlead 15 and the valve body 1 O RunddichtringO 14 is being set down; Valve rod 3 matched in clearance in upper and lower fairlead 4 and 15, and are provided with star-like sealing ring 7 between valve rod 3 and following fairlead 15; In the upper end of valve rod 3 frustum spool 2 is set, the middle part is provided with fine thread, screw adjusting nut 6 and fastening screw nut 16 on the screw thread, between the lower end of the upper end of adjusting nut 6 and last fairlead 4, spring 18 is set, and screws adjusting nut 6 and the precompression of spring 18 is adjusted in the scope of regulation again by fastening screw nut 16 and tight; Rubber piston 9 is passed in the bottom of valve rod 3 and grip and be sealed on the rubber piston 9 by backing plate 13, pad 11 and holding screw 8, so form an air chamber that surrounds between the frustum face, valve rod 3 of last plane, the spool 2 of cylindrical hole and last fairlead 4 in air chamber surrounding between the baseplane, valve rod 3 of bellmouth orifice and rubber piston 9, time fairlead 15 in the valve body 1 and the valve body 1, wherein the former air chamber with communicate out of my cabin, link to each other in latter's air chamber and the cabin.On any wall of mining survival capsule, load onto the utility model, and make bellmouth orifice on the valve body 1 in the cabin by the external screw thread on the valve body 1.When the inside and outside gas pressure in cabin was in equilibrium state, valve rod 3 was close on the potted line of valve body 1 all the time at spool 2 conical surfaces of its upper end under the effect of spring 18, in the cabin, gas out of my cabin is isolated fully.When the oxygen cylinder in the cabin or oxygen generator provide oxygen in the cabin, gas pressure in the cabin constantly raises thereupon, when this gas pressure that constantly raises can overcome the elastic force of spring 18, this gas pressure that constantly raises will be oppressed rubber piston 9 and be heaved to the air chamber inner elastomeric at place, valve body 1 inside trumpet hole, the air chamber gas at place, valve body 1 inside trumpet hole is discharged by axial elongated hole 19, thereby making rubber piston 9 drive valve rod 3 moves upward, frustum spool 2 on the valve rod 3 is thrown off with the potted line on the valve body 1, the air chamber here communicates thereupon with out of my cabin, cabin inner high voltage gas is by venthole 17 on the valve body 1, air vent on last fairlead 4 walls, discharge with the sealed airspace on the potted line, the air pressure in the cabin reduces.When the air pressure in the cabin with out of my cabin air pressure during near balance, valve rod 3 moves downward under the spring power effect of spring 18, comes back to original position, valve rod 3 drives frustum spools 2 and fits tightly on the potted line of valve body 1, the inside and outside gas in cabin is isolated once again.So never equilibrate to the constantly conversion automatically of relative equilibrium, realized that the air pressure in the mining survival capsule is in the state of controlled range all the time.
Claims (2)
1. Y type differential pressure automatic decompression valve, it comprises a valve body, the valve body outer upper ends is shaped on external screw thread, inside upper part is provided with cylindrical hole, the bottom is provided with bellmouth orifice, sidewall is provided with an axial elongated hole, one end of described axial elongated hole communicates with atmosphere out of my cabin, the other end links to each other with the air chamber that valve body and piston surround, sidewall is provided with radially venthole, gas communicates in one end of described radially venthole and the cabin, the other end links to each other with the air chamber that valve body and spool surround, and cylindrical hole face and valve body upper surface intersect potted line; Two matched in clearance are in the valve body cylindrical hole and lay respectively at the radially fairlead of venthole upper and lower, and the wall of last fairlead is provided with many axial air vents; The valve rod of one matched in clearance in upper and lower fairlead; One piston; One trim ring; A plurality of trip bolts, it is characterized in that described piston be one can deformation elastic plate, it presses by a trim ring and a plurality of trip bolt and is sealed on the baseplane of valve body inner bore; The upper end of described valve rod is provided with a frustum spool, and the bottom is connected with piston.
2. a kind of Y type differential pressure automatic decompression valve as claimed in claim 1 is characterized in that described valve rod middle part is provided with fine thread, is rotary with adjusting nut and fastening screw nut on the fine thread, is provided with a spring between adjusting nut and the last fairlead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200591785U CN202047860U (en) | 2011-03-05 | 2011-03-05 | Automatic Y-type differential pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200591785U CN202047860U (en) | 2011-03-05 | 2011-03-05 | Automatic Y-type differential pressure relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202047860U true CN202047860U (en) | 2011-11-23 |
Family
ID=44988171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200591785U Expired - Fee Related CN202047860U (en) | 2011-03-05 | 2011-03-05 | Automatic Y-type differential pressure relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202047860U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434197A (en) * | 2011-12-19 | 2012-05-02 | 中国矿业大学 | Automatic pressure relief device of refuge chamber or rescue capsule |
| CN102678984A (en) * | 2011-03-05 | 2012-09-19 | 江苏中煤机电科技有限公司 | Differential pressure type automatic relief valve |
| CN114212389A (en) * | 2021-11-26 | 2022-03-22 | 山西江淮重工有限责任公司 | Telescopic pumping and inflating device and sealed storage container |
-
2011
- 2011-03-05 CN CN2011200591785U patent/CN202047860U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678984A (en) * | 2011-03-05 | 2012-09-19 | 江苏中煤机电科技有限公司 | Differential pressure type automatic relief valve |
| CN102434197A (en) * | 2011-12-19 | 2012-05-02 | 中国矿业大学 | Automatic pressure relief device of refuge chamber or rescue capsule |
| CN114212389A (en) * | 2021-11-26 | 2022-03-22 | 山西江淮重工有限责任公司 | Telescopic pumping and inflating device and sealed storage container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20160305 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |