CN201474710U - Large-flow relief valve - Google Patents

Large-flow relief valve Download PDF

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Publication number
CN201474710U
CN201474710U CN2009201503182U CN200920150318U CN201474710U CN 201474710 U CN201474710 U CN 201474710U CN 2009201503182 U CN2009201503182 U CN 2009201503182U CN 200920150318 U CN200920150318 U CN 200920150318U CN 201474710 U CN201474710 U CN 201474710U
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CN
China
Prior art keywords
valve
spool
spring
flow safety
chamfering
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 - Fee Related
Application number
CN2009201503182U
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Chinese (zh)
Inventor
王润宏
杨万朝
马怀勇
王力
鲁和平
刘海东
Original Assignee
王润宏
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 王润宏 filed Critical 王润宏
Priority to CN2009201503182U priority Critical patent/CN201474710U/en
Application granted granted Critical
Publication of CN201474710U publication Critical patent/CN201474710U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a large-flow relief valve for a fully-mechanized hydraulic support. The large-flow relief valve comprises a valve body, a valve core and a valve housing, wherein the valve body has a liquid inlet and an overflow port; the valve core with a chamfer arranged at the front end is arranged in the valve body and can slide therein; a chamfer matched with the chamfer of the valve core is formed between the liquid inlet and the overflow port; a valve base, a spring base and a pressure spring are arranged in the valve housing; the valve base is arranged between the valve core and the pressure spring; and the spring base is arranged at the rear end of the valve housing. Through the chamfer at the front end of the valve core and the matched chamfer between the liquid inlet and the overflow port, the valve core can achieve cone seal under the action of the spring force. The large-flow relief valve has the advantages of simple structure, reliable use, long service life, high open-close characteristic, and strong adaptability, and can be used for liquid and gas devices.

Description

High-flow safety valve
Technical field
The utility model relates to a kind of comprehensive mining hydraulic bracket high-flow safety valve.
Background technology
At present, the home and abroad is provided in comprehensive mining hydraulic bracket at last safety valve, no matter be one-level opening structure or secondary opening structure, complex structure almost all constitutes the opening device main body by overfall that bores and rubber seal on the circumference of hollow spool.Because the frictional force between hollow spool and the sealing ring increases with the increase of system pressure, be difficult to satisfy " open and shut characteristic " when high pressure, big flow, manufacture difficulty is big; The hollow spool impact resistance is poor; The scouring capability of the anti-highly pressurised liquid of rubber seal is poor, is easy to cause safety valve to damage and loses efficacy, and influences the security reliability of comprehensive mining hydraulic bracket.
The utility model content
The utility model has overcome above-mentioned shortcoming, provide a kind of simple and compact for structure, intensity is high, shock resistance, comprehensive mining hydraulic bracket high-flow safety valve that " open and shut characteristic " is good.
The technical scheme in the invention for solving the technical problem is: a kind of high-flow safety valve, comprise valve body, spool and valve casing, described valve body has inlet and overfall, described spool is arranged in the valve body and can slides in described valve body, front end is provided with chamfering, be provided with the chamfering that the chamfering with described spool is complementary between described inlet and the overfall, be provided with valve seat, spring base and compression spring in the described valve casing, described valve seat is arranged between described spool and the compression spring, and described spring base is arranged on the rear end of described valve casing.
Also be set with valve pad in the described valve body, described spool is arranged in the described valve pocket and can slides in described valve pocket, is provided with liquid pass hole corresponding to the overfall place on the valve pocket.
Also be set with valve pocket in the described valve body, described valve pad rear end is provided with chamfering, is complementary with the chamfering of the front end setting of described spool.
Described spool rear end is provided with the bulb end, and is corresponding with the dimple that described valve seat front end is provided with.
Also be provided with the safeguard protection cap on the described valve body on the excircle of corresponding overfall.
The excircle of described spool is provided with dust-proof seal ring.
The excircle of described spool is provided with lubrication groove.
Described valve casing rear end is provided with internal thread, and described spring base is for having externally threaded rotating missile spring abutment.
Described rotating missile spring abutment is provided with interior hexagonal cylinder end clamping fixed screw.
The chamfering that the utility model is provided with by described spool front end, and the chamfering that is provided with between described inlet and the overfall is complementary, under the effect of spring force, make spool realize conical surface seal, described spool front end is when being subjected to fluid pressure above the spring counter-force, in valve casing, move, produce the slit at spool Leading end chamfer conical surface place, liquid that inlet goes out is outwards drained to overfall through the slit, when described spool forefront pressure is lower than setting value, under the effect of compression spring, close the overflow ducts of inlet and overfall, the pressure that the maintenance system needs, safe and reliable.The utility model is simple in structure, reliable, the life-span is long, " open and shut characteristic ", compliance are strong, can be widely used in the pressure relief safety valve of the device of liquid, gas.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
As shown in fig. 1, valve body 1 in the utility model has inlet 12 and overfall 13, be set with valve pad 2 and valve pocket 5 in the described valve body, the spool 6 that is slidingly matched is arranged in valve pocket 5, the front end of described spool 6 is provided with chamfering, be complementary with the chamfering of described valve pad 2 rear ends, be provided with liquid pass hole 51 corresponding to overfall place 13 on the valve pocket 5, also be provided with valve seat 7 and corresponding compression spring 8 in the valve casing 9, the bulb end 61 of described spool 6 rear ends realizes that corresponding to the dimple 71 of valve seat 7 front ends self adaptation cooperates, under the effect of spring force, make spool 6 and valve pad 2 realize conical surface seal; Because valve body 1 adopts the higher stainless steel material of hardness to make usually, and valve pad 2 can adopt softer copper product to make, thereby guarantees the sealing performance between spool 6 and the valve pad 2.Also be provided with safeguard protection cap 3 on the excircle of corresponding overfall 13 on the described valve body 1, guarantee that the outer spray of drainage do not hurt sb.'s feelings; Have lubrication groove 62 and dust-proof seal ring 4 on the described spool 6, the sealing by sealing ring 4 prevents that drainage from entering spring housing, constitutes dustless spring housing, guarantees that spring is not polluted by dirt.
Based on said structure, the course of work of the present utility model is as follows, high-pressure emulsion acts on the front end of spool 6 through inlet 12, when the counter-force of the pressure overpressure spring 8 of liquid, emulsion is passed spool 6 to the direction away from valve pad 2, tractional force is during greater than the setting power of spring 8, spool 6 moves in valve casing 9 along valve pocket 5, produce the slit between the chamfering conical surface of the chamfering conical surface of valve pad 2 rear ends and spool 6 front ends, at this moment, the emulsion at inlet 12 places is through the slit, flow to overfall 13 from the liquid pass hole 51 of valve pocket 5, through hard hat 3 stop turn to after, outwards drainage reduces system liquid pressure.When system pressure is lower than setting value, under the effect of compression spring 8, spool 6 is passed to the direction near valve pad 2, close the overflow ducts of inlet 12 and overfall 13, stop emulsion to leak again, the pressure that the maintenance system needs, safe and reliable.
Have lubrication groove 62 on the solid-cone bottom valve core 6 of present embodiment, lubrication groove 62 places are filled with sliding agent, force of sliding friction and system pressure, the flow of spool 6 in valve pocket 5 has nothing to do, therefore, frictional force is very little, controlled, open and close very sensitive rapidly, flexibly, reliable, be easy to realize 90% " open and shut characteristic " requirement at big flow condition.And solid spool 6 anti-impact forces are strong, and the size of drainage flow is by the size decision that produces the slit between the conical surface of the conical surface of valve pad 2 and spool 6, and gap size depends on the height of overload value, and the overload value is big more, and the slit is big more, and flow is big more, realizes big flow; Otherwise, as the same, realize low discharge.It is the safety valve of the large and small flow of a kind of self adaptation.In addition, change opening pressure if desired, can be arranged on the rotating missile spring abutment 10 of valve casing 9 rear ends, the pressure of adjusting compression spring 8 with interior hexagonal cylinder end clamping fixed screw 11 lockings, is avoided changing spring pressure because of vibrations to desired value then.
More than high-flow safety valve provided by the utility model is described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.

Claims (9)

1. high-flow safety valve, comprise valve body, spool and valve casing, described valve body has inlet and overfall, it is characterized in that: described spool is arranged in the valve body and can slides in described valve body, front end is provided with chamfering, be provided with the chamfering that the chamfering with described spool is complementary between described inlet and the overfall, be provided with valve seat, spring base and compression spring in the described valve casing, described valve seat is arranged between described spool and the compression spring, and described spring base is arranged on the rear end of described valve casing.
2. high-flow safety valve according to claim 1 is characterized in that: also be provided with the safeguard protection cap on the described valve body on the excircle of corresponding overfall.
3. high-flow safety valve according to claim 1 is characterized in that: described valve casing rear end is provided with internal thread, and described spring base is for having externally threaded rotating missile spring abutment.
4. high-flow safety valve according to claim 1 is characterized in that: also be set with valve pad in the described valve body, described spool is arranged in the described valve pocket and can slides in described valve pocket, is provided with liquid pass hole corresponding to the overfall place on the valve pocket.
5. high-flow safety valve according to claim 1 is characterized in that: also be set with valve pocket in the described valve body, described valve pad rear end is provided with chamfering, is complementary with the chamfering of the front end setting of described spool.
6. high-flow safety valve according to claim 1 is characterized in that: described spool rear end is provided with the bulb end, and is corresponding with the dimple that described valve seat front end is provided with.
7. high-flow safety valve according to claim 1 is characterized in that: the excircle of described spool is provided with dust-proof seal ring.
8. high-flow safety valve according to claim 1 is characterized in that: the excircle of described spool is provided with lubrication groove.
9. high-flow safety valve according to claim 3 is characterized in that: described rotating missile spring abutment is provided with interior hexagonal cylinder end clamping fixed screw.
CN2009201503182U 2009-04-30 2009-04-30 Large-flow relief valve Expired - Fee Related CN201474710U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201503182U CN201474710U (en) 2009-04-30 2009-04-30 Large-flow relief valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201503182U CN201474710U (en) 2009-04-30 2009-04-30 Large-flow relief valve

Publications (1)

Publication Number Publication Date
CN201474710U true CN201474710U (en) 2010-05-19

Family

ID=42410958

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009201503182U Expired - Fee Related CN201474710U (en) 2009-04-30 2009-04-30 Large-flow relief valve

Country Status (1)

Country Link
CN (1) CN201474710U (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105298527A (en) * 2015-11-26 2016-02-03 巨隆集团芜湖兴隆液压有限公司 Opening and closing mechanism of overflowing safety valve
CN105386783A (en) * 2015-11-26 2016-03-09 巨隆集团芜湖兴隆液压有限公司 Valve core assembly of overflow safety valve
CN105422157A (en) * 2016-01-25 2016-03-23 巨隆集团芜湖兴隆液压有限公司 Safety valve
CN105422159A (en) * 2016-01-25 2016-03-23 巨隆集团芜湖兴隆液压有限公司 Large flow overflow safety valve
CN105422158A (en) * 2016-01-25 2016-03-23 巨隆集团芜湖兴隆液压有限公司 Switching mechanism of safety valve
CN105464687A (en) * 2016-01-25 2016-04-06 巨隆集团芜湖兴隆液压有限公司 Safety valve
CN105484780A (en) * 2015-11-26 2016-04-13 巨隆集团芜湖兴隆液压有限公司 Overflow safety valve
CN105484785A (en) * 2016-01-25 2016-04-13 巨隆集团芜湖兴隆液压有限公司 Valve core assembly of safety valve
CN105484784A (en) * 2016-01-25 2016-04-13 巨隆集团芜湖兴隆液压有限公司 Overflow safety valve
CN105507932A (en) * 2016-01-25 2016-04-20 巨隆集团芜湖兴隆液压有限公司 Safety valve
CN105545338A (en) * 2016-01-25 2016-05-04 巨隆集团芜湖兴隆液压有限公司 Switching mechanism for safety valve
CN105545339A (en) * 2016-01-25 2016-05-04 巨隆集团芜湖兴隆液压有限公司 Switching mechanism for large-flow overflow safety valve
CN105604587A (en) * 2016-01-25 2016-05-25 巨隆集团芜湖兴隆液压有限公司 Opening/closing mechanism of safety valve
CN105604586A (en) * 2016-01-25 2016-05-25 巨隆集团芜湖兴隆液压有限公司 Valve element assembly of safety valve
CN105604585A (en) * 2016-01-25 2016-05-25 巨隆集团芜湖兴隆液压有限公司 Safety valve
CN105673053A (en) * 2016-01-25 2016-06-15 巨隆集团芜湖兴隆液压有限公司 Safety valve
CN105673057A (en) * 2016-01-25 2016-06-15 巨隆集团芜湖兴隆液压有限公司 Opening and closing mechanism of safety valve
CN105715284A (en) * 2016-01-25 2016-06-29 巨隆集团芜湖兴隆液压有限公司 Switching on and switching off mechanism of safety valve

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105484780A (en) * 2015-11-26 2016-04-13 巨隆集团芜湖兴隆液压有限公司 Overflow safety valve
CN105386783A (en) * 2015-11-26 2016-03-09 巨隆集团芜湖兴隆液压有限公司 Valve core assembly of overflow safety valve
CN105298527A (en) * 2015-11-26 2016-02-03 巨隆集团芜湖兴隆液压有限公司 Opening and closing mechanism of overflowing safety valve
CN105507932A (en) * 2016-01-25 2016-04-20 巨隆集团芜湖兴隆液压有限公司 Safety valve
CN105422158A (en) * 2016-01-25 2016-03-23 巨隆集团芜湖兴隆液压有限公司 Switching mechanism of safety valve
CN105464687A (en) * 2016-01-25 2016-04-06 巨隆集团芜湖兴隆液压有限公司 Safety valve
CN105422159A (en) * 2016-01-25 2016-03-23 巨隆集团芜湖兴隆液压有限公司 Large flow overflow safety valve
CN105484785A (en) * 2016-01-25 2016-04-13 巨隆集团芜湖兴隆液压有限公司 Valve core assembly of safety valve
CN105484784A (en) * 2016-01-25 2016-04-13 巨隆集团芜湖兴隆液压有限公司 Overflow safety valve
CN105422157A (en) * 2016-01-25 2016-03-23 巨隆集团芜湖兴隆液压有限公司 Safety valve
CN105545338A (en) * 2016-01-25 2016-05-04 巨隆集团芜湖兴隆液压有限公司 Switching mechanism for safety valve
CN105545339A (en) * 2016-01-25 2016-05-04 巨隆集团芜湖兴隆液压有限公司 Switching mechanism for large-flow overflow safety valve
CN105604587A (en) * 2016-01-25 2016-05-25 巨隆集团芜湖兴隆液压有限公司 Opening/closing mechanism of safety valve
CN105604586A (en) * 2016-01-25 2016-05-25 巨隆集团芜湖兴隆液压有限公司 Valve element assembly of safety valve
CN105604585A (en) * 2016-01-25 2016-05-25 巨隆集团芜湖兴隆液压有限公司 Safety valve
CN105673053A (en) * 2016-01-25 2016-06-15 巨隆集团芜湖兴隆液压有限公司 Safety valve
CN105673057A (en) * 2016-01-25 2016-06-15 巨隆集团芜湖兴隆液压有限公司 Opening and closing mechanism of safety valve
CN105715284A (en) * 2016-01-25 2016-06-29 巨隆集团芜湖兴隆液压有限公司 Switching on and switching off mechanism of safety valve

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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
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100519

Termination date: 20130430