CN201330613Y - High-pressure large-flow-rate safety valve - Google Patents
High-pressure large-flow-rate safety valve Download PDFInfo
- Publication number
- CN201330613Y CN201330613Y CNU2008202235162U CN200820223516U CN201330613Y CN 201330613 Y CN201330613 Y CN 201330613Y CN U2008202235162 U CNU2008202235162 U CN U2008202235162U CN 200820223516 U CN200820223516 U CN 200820223516U CN 201330613 Y CN201330613 Y CN 201330613Y
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- relief hole
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Abstract
The utility model relates to a high-pressure large-flow-rate safety valve, which belongs to the control valve for a coal mine underground hydraulic supporting device, and aims at solving the contradiction of the prior art between the unloading pressure and the structure size, and comprises a dipyramid oil-inlet-outlet connector which is connected with an outer wall of a shell in a threading way, and the dipyramid oil-inlet-outlet connector is sealed with the outer wall through a first static gasket ring; a protection cover is movably sleeved outside the shell, and the wall of the shell is provided with a pressure relief hole, and the inner wall of the shell is movably provided with a valve core in a sealing way; the wall of the valve core is also provided with the pressure relief hole which is communicated with hollow part of the valve core; a valve seat is connected with the shell in the sealing way, and a pushing rod of the valve core is contacted with a spring seat through the valve seat; the valve seat is arranged inside a spring sleeve, and a spring is arranged inside the spring sleeve and is arranged on a rear end projection of the spring seat, and the other end of the spring is pushed against by a threaded connector which is connected with the spring sleeve in the threading way, and the valve core is integrated with the pushing rod into a whole body, and the end surface which is arranged on the periphery of the pushing rod of the valve core is provided with inclined holes which are communicated with the hollow part and are uniformly distributed, and a first dynamic gasket ring is arranged between the outer wall of the valve core and the inner wall of the shell.
Description
Technical field
The utility model belongs to the control valve of hydraulic prop equipment under the coal mine, particularly a kind of high-pressure high-flow safety valve.
Background technology
At present, the safety valve that is used for the coal mine fully-mechanized mining working hydraulic support, constitute by valve casing, valve body, voltage regulation screw, spring base, spring, spool, strainer etc., have spout hole on the valve casing and seal by gum cover, have the overflow aperture on the spool, because strainer is a planar, metered flow is little, general upward metered flow is 160L/min, can not satisfy requirement of actual application.
When hydraulic system pressure reaches more than the 50MPa; require the off-load ability to reach 2000L/min when above; the safety valve of protection system adds the cylinder spring structure by traditional single drain charge will make physical dimension become very huge; and generally adopt high pressure gas to satisfy above-mentioned requirements as compression spring in order to reduce physical dimension, its shortcoming is:
1) owing to having adopted high pressure gas, its traffic condition to become badly, because of it belongs to the high pressure explosive material;
2) gas easily leaks, the seal request height;
3) range of regulation can not be adjusted;
4) difficult in maintenance, when gas leakage, must use the special equipment aerating.
The utility model content
The purpose of this utility model is to solve the contradiction of prior art between drain charge pressure and physical dimension, a kind of high-pressure high-flow safety valve is provided, under the situation that does not adopt high pressure gas as compression spring, physical dimension is little, and can realize the valve control of high-pressure high-flow.
The purpose of this utility model realizes by following technical proposals:
The high-pressure high-flow safety valve, comprise bipyramid oil inlet and outlet joint, shell, the first static seal circle, spool, over cap, valve seat, spring base, spring housing, spring, nipple, bipyramid oil inlet and outlet joint is connected with the outer wall spiral of shell, between the two by the first static seal circle (" first " in this manual before the component names, " second " etc., only be in order to express easily, do not have special implication) sealing; The over cap movable set offers relief hole on the wall of shell outside shell, the inner wall sealing kink of shell has spool; Also offer the relief hole that communicates with its hollow part on the wall of spool; Valve seat is connected with body seal, and the push rod of spool passes valve seat and contacts with spring base; Spring base is arranged in the spring housing, spring is loaded in the spring housing and is sleeved on the rear end lug boss of spring base, the nipple that the other end of spring is connected with the spring housing spiral withstands, described spool and push rod thereof are structure as a whole, the end face that is positioned at the push rod periphery on the spool offers the inclined hole that communicates with its hollow part, evenly arrange, the hollow part of spool communicates with the hollow part of the hollow part of shell, bipyramid oil inlet and outlet joint, is provided with first dynamic seal ring between the outer wall of spool and the inwall of shell.
Be provided with the static seal circle between the inwall of described shell and the valve seat.
Relief hole on described shell and the spool is respectively two rows of coupling.
Relief hole diameter on the described spool is 1.6mm～1.8mm.
First dynamic seal ring between described spool and the shell is provided with four roads, and the relief hole on the shell is two rows, and the both sides of every row's relief hole have first dynamic seal ring together respectively.
Relief hole on the described spool also is two rows, is complementary with relief hole on the shell, and the every row's quantity of the relief hole on the spool is 34～38.
The end that the push rod of described spool contacts with spring base adopts ball head structure, and seat surface is a cone structure to the one side of push rod.
The outside of described nipple is equipped with screw mandrel, to prevent the thread looseness of nipple.
Adopt the utility model of said structure; the emulsion that surpasses rated pressure in hydraulic support column promotes spool compression spring and moves; relief hole on the spool is by behind first dynamic seal ring; the emulsion of super-pressure is by relief hole on the spool and the ejection of the relief hole on shell pressure release; when pressure is let out less than spring setting rated pressure; spring back into original position by push rod with spool; relief hole on spool and the shell is closed because of dislocation; system comes back to rated pressure; its function had both been protected the safety of bracket upright post, kept the stable state of system held at high pressure again.
The beneficial effects of the utility model comprise following several aspect:
(1) safety valve structure of the present utility model under the little situation of valve core diameter, can obtain the area of passage of single row of holes twice owing to adopted two row's relief holes on spool, has satisfied the requirement of high-pressure high-flow.Show that by test its opening pressure can reach 50Mpa, flow can reach 1900～2100L/min.
(2) safety valve of the present utility model is when pressure progressively is elevated to specified the requirement, and spool moves, and first row's relief hole pressure release rises also then as pressure that second round adds pressure release, and it is maximum that whole pressure release flow reaches; This structure is active in one's movements safety valve, reacts and also can reach big flow pressure release requirement on the timely basis.
(3) spool of safety valve of the present utility model and push rod adopt integral structure, at spool end circumference uniform distribution inclined hole, make the spool two ends produce pressure reduction, are beneficial to the promotion spool and move, to open safety valve.
(4) the spool push rod of the utility model safety valve adopts ball head structure, and the spring base respective face adopts cone structure, so both can reduce difficulty of processing, because conical surface ball head structure has the automatic centering effect to spring, has improved the stability in use of spring simultaneously.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of spool in the utility model;
Number in the figure: the 1st, bipyramid oil inlet and outlet joint, the 2nd, shell, 3 is first static seal circles; the 4th, spool, the 5th, over cap, 6 is first dynamic seal rings; the 7th, valve seat, 8 is second dynamic seal rings, the 9th, spring base; the 10th, spring housing; the 11st, spring, the 12nd, nipple, the 13rd, screw mandrel; the 14th, inclined hole, 15 is second static seal circles.
The specific embodiment
Below in conjunction with specific embodiments and the drawings the utility model is further described.
As shown in Figure 1, the high-pressure high-flow safety valve of present embodiment mainly comprises bipyramid oil inlet and outlet joint 1, shell 2, spool 4, valve seat 7, spring base 9, spring housing 10, nipple 12, bipyramid oil inlet and outlet joint 1 is connected with the outer wall spiral of shell 2, between the two by 3 sealings of the first static seal circle; Over cap 5 movable sets offer relief hole on the wall of shell 2 outside shell 2, the inner wall sealing kink of shell 2 has spool 4; Also offer the relief hole that communicates with its hollow part on the wall of spool 4; Valve seat 7 is tightly connected by the second static seal circle 15 with shell 2, and the push rod of spool 4 passes valve seat 7 and contacts with spring base 9; Spring base 9 is arranged in the spring housing 10, spring 11 is loaded in the spring housing 10 and is sleeved on the rear end lug boss of spring base 9, the nipple that the other end of spring 11 is connected with spring housing 10 spirals withstands, spool 4 and push rod thereof are structure as a whole, the end face that is positioned at the push rod periphery on the spool 4 offers the inclined hole 14 (as shown in Figure 2) that communicates with its hollow part, evenly arrange, the hollow part of spool 4 communicates with the hollow part of shell 2, the hollow part of bipyramid oil inlet and outlet joint 1, is provided with first dynamic seal ring 6 between the inwall of the outer wall of spool 4 and shell 2.
The over cap 5 of the outside suit of shell 2 after liquid enters unloading cavity by high pressure chest, is pushed over cap 5 open liquid is flowed out, and carries out pressure release.
First dynamic seal ring 6 between spool 4 and the shell 2 is provided with four roads, and the relief hole on the shell 2 is two rows, and the both sides of every row's relief hole have first dynamic seal ring 6 together respectively; Relief hole on the spool 4 also is two rows, is complementary with relief hole on the shell 2, and the every row's quantity of the relief hole on the spool 4 is 34～38.
The end that the push rod of spool 4 contacts with spring base 9 adopts ball head structure, and spring base 9 is a cone structure towards the one side of push rod.Seal by second dynamic seal ring 8 between the push rod of spool 4 and the valve seat 7.
For preventing the thread looseness of nipple 12, screw mandrel 13 is housed on nipple 12.
The operating principle of present embodiment is: as shown in Figure 1; the emulsion that surpasses rated pressure in the hydraulic support column promotes spool 4 and moves right; relief hole on the spool 4 is by behind first dynamic seal ring 6; spray pressure release the relief hole of the emulsion of super-pressure from spool 4 and on the shell 2; when pressure is let out less than spring 11 setting rated pressures; spring 11 back into original position by push rod with spool 4; relief hole on spool 4 and the shell 2 is closed because of dislocation; system comes back to rated pressure; its function had both been protected the safety of bracket upright post, kept system held at high pressure conditions again.
Claims (8)
1, high-pressure high-flow safety valve, comprise bipyramid oil inlet and outlet joint (1), shell (2), the first static seal circle (3), spool (4), over cap (5), valve seat (7), spring base (9), spring housing (10), spring (11), nipple (12), bipyramid oil inlet and outlet joint (1) is connected with the outer wall spiral of shell (2), between the two by the sealing of the first static seal circle (3); Over cap (5) movable set offers relief hole on the wall of shell (2) outside shell (2), the inner wall sealing kink of shell (2) has spool (4); Also offer the relief hole that communicates with its hollow part on the wall of spool (4); Valve seat (7) is tightly connected with shell (2), and the push rod of spool (4) passes valve seat (7) and contacts with spring base (9); Spring base (9) is arranged in the spring housing (10), spring (11) is loaded in the spring housing (10) and is sleeved on the rear end lug boss of spring base (9), the nipple that the other end of spring (11) is connected with spring housing (10) spiral withstands, it is characterized in that, described spool (4) and push rod thereof are structure as a whole, the end face that is positioned at the push rod periphery on the spool (4) offers and communicates with its hollow part, the even inclined hole of arranging (14), the hollow part of the hollow part of spool (4) and shell (2), the hollow part of bipyramid oil inlet and outlet joint (1) communicates, and is provided with first dynamic seal ring (6) between the inwall of the outer wall of spool (4) and shell (2).
2, high-pressure high-flow safety valve according to claim 1 is characterized in that, is provided with the static seal circle between the inwall of described shell (2) and the valve seat (7).
3, high-pressure high-flow safety valve according to claim 1 is characterized in that the relief hole on described shell (2) and the spool (4) is respectively two rows of coupling.
4, as high-pressure high-flow safety valve as described in claim 1 or 3, it is characterized in that the relief hole diameter on the described spool (4) is 1.6mm～1.8mm.
5, high-pressure high-flow safety valve according to claim 1, it is characterized in that, first dynamic seal ring (6) between described spool (4) and the shell (2) is provided with four roads, and the relief hole on the shell (2) is two rows, and the both sides of every row's relief hole have first dynamic seal ring (6) together respectively.
6, as high-pressure high-flow safety valve as described in the claim 5, it is characterized in that the relief hole on the described spool (4) also is two rows, be complementary that the every row's quantity of the relief hole on the spool (4) is 34～38 with relief hole on the shell (2).
7, high-pressure high-flow safety valve according to claim 1 is characterized in that, the end that the push rod of described spool (4) contacts with spring base (9) adopts ball head structure, and spring base (9) is a cone structure towards the one side of push rod.
8, high-pressure high-flow safety valve according to claim 1 is characterized in that the outside of described nipple (12) is equipped with screw mandrel (13), to prevent the thread looseness of nipple (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202235162U CN201330613Y (en) | 2008-12-18 | 2008-12-18 | High-pressure large-flow-rate safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202235162U CN201330613Y (en) | 2008-12-18 | 2008-12-18 | High-pressure large-flow-rate safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201330613Y true CN201330613Y (en) | 2009-10-21 |
Family
ID=41223991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202235162U Expired - Fee Related CN201330613Y (en) | 2008-12-18 | 2008-12-18 | High-pressure large-flow-rate safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201330613Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748041A (en) * | 2012-07-04 | 2012-10-24 | 巨隆集团芜湖兴隆液压有限公司 | Nitrogen safety valve for hydraulic support in coal mine fully mechanized mining |
| CN103348946A (en) * | 2013-07-21 | 2013-10-16 | 翟玉明 | Balance submerging and surfacing device for aquaculture net cage |
| CN103423720A (en) * | 2012-05-23 | 2013-12-04 | 海洋王照明科技股份有限公司 | Explosion-proof lamp and pressure regulating device thereof |
| CN104373141A (en) * | 2014-09-09 | 2015-02-25 | 深圳市神拓机电设备有限公司 | Safety valve with conical surface sealing structure |
| CN105569696A (en) * | 2016-03-04 | 2016-05-11 | 辽宁工程技术大学 | Extra-large flow high-pressure erosion-control pressure control valve for hydraulic support |
| CN111219382A (en) * | 2019-10-29 | 2020-06-02 | 北京天地玛珂电液控制系统有限公司 | High-flow safety valve for aqueous medium mine |
| CN112576565A (en) * | 2020-11-27 | 2021-03-30 | 北京天地玛珂电液控制系统有限公司 | Inflatable safety valve |
-
2008
- 2008-12-18 CN CNU2008202235162U patent/CN201330613Y/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423720A (en) * | 2012-05-23 | 2013-12-04 | 海洋王照明科技股份有限公司 | Explosion-proof lamp and pressure regulating device thereof |
| CN103423720B (en) * | 2012-05-23 | 2017-10-13 | 海洋王照明科技股份有限公司 | Explosion-proof lamp pressure-regulating device and explosion-proof lamp |
| CN103953371B (en) * | 2012-07-04 | 2016-02-10 | 巨隆集团芜湖兴隆液压有限公司 | A kind of nitrogen safety valve for colliery comprehensive mining hydraulic bracket |
| CN103953369B (en) * | 2012-07-04 | 2016-01-27 | 巨隆集团芜湖兴隆液压有限公司 | A kind of nitrogen safety valve for colliery comprehensive mining hydraulic bracket |
| CN103953372A (en) * | 2012-07-04 | 2014-07-30 | 巨隆集团芜湖兴隆液压有限公司 | Nitrogen safety valve used by coalmine fully-mechanized mining hydraulic bracket |
| CN103953371A (en) * | 2012-07-04 | 2014-07-30 | 巨隆集团芜湖兴隆液压有限公司 | Nitrogen safety valve used by coalmine fully-mechanized mining hydraulic bracket |
| CN103953370A (en) * | 2012-07-04 | 2014-07-30 | 巨隆集团芜湖兴隆液压有限公司 | Nitrogen safety valve used by coalmine fully-mechanized mining hydraulic bracket |
| CN102748041B (en) * | 2012-07-04 | 2014-10-01 | 巨隆集团芜湖兴隆液压有限公司 | Nitrogen safety valve for hydraulic support in coal mine fully mechanized mining |
| CN102748041A (en) * | 2012-07-04 | 2012-10-24 | 巨隆集团芜湖兴隆液压有限公司 | Nitrogen safety valve for hydraulic support in coal mine fully mechanized mining |
| CN103953369A (en) * | 2012-07-04 | 2014-07-30 | 巨隆集团芜湖兴隆液压有限公司 | Nitrogen safety valve used by coalmine fully-mechanized mining hydraulic bracket |
| CN103953370B (en) * | 2012-07-04 | 2016-01-27 | 巨隆集团芜湖兴隆液压有限公司 | A kind of nitrogen safety valve for colliery comprehensive mining hydraulic bracket |
| CN103953372B (en) * | 2012-07-04 | 2016-02-10 | 巨隆集团芜湖兴隆液压有限公司 | A kind of nitrogen safety valve for colliery comprehensive mining hydraulic bracket |
| CN103348946A (en) * | 2013-07-21 | 2013-10-16 | 翟玉明 | Balance submerging and surfacing device for aquaculture net cage |
| CN104373141A (en) * | 2014-09-09 | 2015-02-25 | 深圳市神拓机电设备有限公司 | Safety valve with conical surface sealing structure |
| CN105569696A (en) * | 2016-03-04 | 2016-05-11 | 辽宁工程技术大学 | Extra-large flow high-pressure erosion-control pressure control valve for hydraulic support |
| CN111219382A (en) * | 2019-10-29 | 2020-06-02 | 北京天地玛珂电液控制系统有限公司 | High-flow safety valve for aqueous medium mine |
| CN112576565A (en) * | 2020-11-27 | 2021-03-30 | 北京天地玛珂电液控制系统有限公司 | Inflatable safety valve |
| CN112576565B (en) * | 2020-11-27 | 2023-08-22 | 北京天玛智控科技股份有限公司 | Inflatable safety valve |
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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: 20091021 Termination date: 20151218 |
|
| EXPY | Termination of patent right or utility model |