CN207661185U

CN207661185U - Shut-off valve

Info

Publication number: CN207661185U
Application number: CN201721773912.8U
Authority: CN
Inventors: 安丽珍
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-12-18
Filing date: 2017-12-18
Publication date: 2018-07-27
Anticipated expiration: 2027-12-18

Abstract

The utility model provides a kind of shut-off valve, the shut-off valve include end valve body, the cock body that is contained in the cut-off valve body and can be moved back and forth along the central axes direction of the cut-off valve body, the adjustment spring being contained in the cock body and one end are connect with the cock body and the other end and the control spring for ending valve body and connecting.Compared with the relevant technologies, the utility model can regulate and control the elastic force of adjustment spring, to achieve the purpose that promote the durability of shut-off valve.

Description

Shut-off valve

Technical field

The utility model is related to valve technology field more particularly to a kind of shut-off valves.

Background technology

Shut-off valve is also known as pipe valve valve, belongs to forced seal formula valve, when valve is closed, it is necessary to apply pressure to spool, It is not leaked with forced seal face.

In the related technology, shut-off valve includes cut-off valve body, is contained in the intrinsic cock body of shut-off valve and is contained in cock body Interior adjustment spring, cut-off valve body include valve body and are connected to the spool and control mechanism with inlet opening at valve body both ends, When medium enters valve body by spool, operating force must pull against to spool pressure applied, and then medium could enter valve In body.It is typically that pressure is applied toward the cock body for being internally provided with adjustment spring by control mechanism to spool pressure applied, makes Cock body is obtained to abut to be formed to spool pressure applied with spool.

However in the related technology, the elastic force of adjustment spring with flexible number the extruding for increasing and deforming, elastic force by It is decrescence few, the problems such as causing dielectric leakage so as to cause the pressure reduction applied to spool.

Therefore, it is necessary to provide a kind of new shut-off valve come to solve the above problems.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of shut-off valves that can promote durability.

To solve the above problems, the utility model provides a kind of shut-off valve.The shut-off valve includes cut-off valve body, receives Be dissolved in the cock body that can be moved back and forth in the cut-off valve body and along the central axes direction of the cut-off valve body, be contained in it is described The control spring that adjustment spring and one end in cock body are connect with the cock body and the other end is connect with the cut-off valve body.

Preferably, the cut-off valve body includes having the valve body of receiving space and set on described valve body one end and tool inlet Spool, institute's cock body is contained in the receiving space, and the cock body includes and the spaced top plug of the spool and is set to The both ends of piston far from described spool one end, the adjustment spring are separately connected the top plug and the piston.

Preferably, the valve body includes sequentially connected rear end sleeve, intermediate sleeve, front end pedestal and control piece, described Spool is contained in the rear end sleeve.

Preferably, to include one end connect with the top plug connection and the other end with the spool control spring first Control spring.

Preferably, the valve core outer surface is equipped with external screw thread, and the rear end sleeve interior surface is equipped with internal thread, the spool It is connect with the rear end bush whorl.

Preferably, the front end pedestal and the piston surround storage space, and the control piece is pneumatic operated valve, by described Pneumatic operated valve controls the volume of the storage space.

Preferably, the control spring includes that one end is connect and the other end and the control piece connect the with the piston Two control springs.

Preferably, the control piece is solenoid valve, and the intermediate sleeve inner surface is equipped with internal thread, outside the front end pedestal Surface is equipped with external screw thread, is threadedly coupled between the intermediate sleeve and the front end pedestal.

Preferably, to include one end connect with the top plug connection and the other end with the spool control spring first Control spring and one end are connect with the piston and the second control spring of the other end and control piece connection.

Preferably, the control piece is jackscrew, and the jackscrew outer surface is equipped with external screw thread, and the front end base inner surface is set There is internal thread, is threadedly coupled between the jackscrew and the front end pedestal.

Compared with the relevant technologies, shut-off valve advantageous effect provided by the utility model is：

One, the utility model enables adjustment spring to restore should have bullet by adding control spring compression adjustment spring Power improves the service life of shut-off valve.

Two, when adjustment spring fatigue, aging lose when answering elastic because being threadedly coupled between spool and rear end sleeve, Rotary spool can be passed through so that spool micro-shifting in end cap cylinder backward, to compress by the first control spring and top plug and adjust bullet It is elastic that spring makes adjustment spring recovery answer, and adjustment spring need not be replaced, so that globe valve durability obtains further Promotion.

Three, when adjustment spring fatigue, aging lose when answering elastic because between front end pedestal and intermediate sleeve screw thread connect It connects, pivot head pedestal can be passed through so that front end pedestal micro-shifting in intermediate sleeve, to pass through the second control spring and piston It is elastic that compression adjustment spring makes adjustment spring recovery answer, and adjustment spring need not be replaced, so that globe valve durability Further promoted.

Four, when adjustment spring fatigue, aging lose when answering elastic because between control piece and front end pedestal screw thread connect It connects, tary control member can be passed through so that control piece micro-shifting in the pedestal of front end, to be compressed by the second control spring and piston It is elastic that adjustment spring makes adjustment spring recovery answer, and adjustment spring need not be replaced, so that globe valve durability obtains It is further to be promoted.

Description of the drawings

Fig. 1 is the structural schematic diagram of the utility model shut-off valve embodiment one；

Fig. 2 is the structural schematic diagram of the utility model shut-off valve embodiment two；

Fig. 3 is the structural schematic diagram of the utility model shut-off valve embodiment three.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Lower obtained every other embodiment, shall fall within the protection scope of the present invention.

Embodiment one

Referring to Fig. 1, the utility model provides a kind of shut-off valve 1 comprising cut-off valve body 11 is contained in described cut Only the cock body 12 in valve body 11, the adjustment spring 13 that is contained in the cock body 12 and one end are connect and another with the cock body 12 The control spring 14 that one end is connect with the cut-off valve body 11.The cock body 12 can be along the 11 central axes side of cut-off valve body To being slided.

The cut-off valve body 11 includes the valve body 111 of tool receiving space and the spool set on 111 one end of the valve body 113, institute's cock body 12 is contained in the receiving space.

The valve body 111 includes rear end sleeve 1111, intermediate sleeve 1113, the front end pedestal for being sequentially connected and being total to central axes 1115 and control piece 1116.

1111 both ends of rear end sleeve have opening and inner hollow, the spool 113 are contained in the rear end sleeve 1111 far from 1113 one end of the intermediate sleeve.

The rear end sleeve 1111 includes set on its outer surface and through the fluid hole 1112 of its setting, the fluid hole 1112 are connected to the inner space and the external world that the rear end sleeve 1111 surrounds.

The rear end sleeve 1111 is equipped with internal thread and the close intermediate sleeve close to 113 one end inner surface of the spool 1113 one end outer surface are equipped with the interconnecting piece extended to form toward outside, and the interconnecting piece passes through rivet with the intermediate sleeve 1113 It is fixed to each other.

1113 both ends of the intermediate sleeve have opening and inner hollow.

The intermediate sleeve 1113 includes set on its outer surface and through the stomata 1114 of its setting, and the stomata 1114 will 1113 inner space of the intermediate sleeve is in communication with the outside.

1113 both ends outer surface of the intermediate sleeve is equipped with the fixed part extended to form toward outside, is located at the fixed part at both ends It is fastened to each other by rivet with the interconnecting piece of the rear end sleeve 1111 and the front end pedestal 1115 respectively.

There is opening and inner hollow, the front end pedestal 1115 to have one end of opening for described 1115 one end of front end pedestal It is connect with the intermediate sleeve 1113.

The front end pedestal 1115 is equipped with the connection extended to form outward close to 1113 one end outer surface of the intermediate sleeve The fixed part of block, the link block and the intermediate sleeve 1113 is fastened to each other by rivet.

The control piece 1116 is connect with the front end pedestal 1115 far from 1113 one end of the intermediate sleeve, and described Control piece 1116 runs through the front end pedestal 1115 along 1115 central axis direction of front end pedestal.

The control piece 1116 is past close to the spool 113 1 by the cock body 12 to give the cock body 12 to provide pressure End pushes.

Specifically, the control piece 1116 is pneumatic operated valve.Certainly, set-up mode is without being limited thereto, the control piece 1116 It can also be solenoid valve or even the control piece 1116 can also be jackscrew, connect the control plug with the cock body 12 by jackscrew The thrust etc. of body 12.

The spool 113 includes spool our department 1131, from described spool our department 1131 toward far from described spool our department 1131 The central axes direction extension 1133 extended to form and the inlet 1135 being arranged through 1131 central shaft of spool our department.

1133 outer surface of the extension is equipped with external screw thread, the external screw thread that the spool 113 passes through the extension 1133 It is threadedly coupled with the internal thread of the rear end sleeve 1111 and spool 113 is fixed in the rear end sleeve 1111 with this.

The inlet 1135 is connected to 1111 inner space of rear end sleeve, and liquid is entered by the inlet 1135 In 1111 inner space of rear end sleeve, and it is empty that 1111 inside of the rear end sleeve can be flowed out by the fluid hole 1112 Between.

The cock body 12 can be moved back and forth along the central axes direction of the valve body 111 to open or close the inlet 1135.It is specific as follows：

The cock body 12 can be by both direction opposite effect power, the fluid pressure from 1135 direction of the inlet F1 and air pressure F2 from 1116 direction of control piece.When the fluid pressure F1 is more than the air pressure F2, push The cock body 12 is moved toward far from 113 direction of the spool, opens the inlet 1135；When the fluid pressure F1 is less than institute When stating air pressure F2, pushes the cock body to be moved toward close to 113 direction of the spool, close the inlet 1135.

The cock body 12 includes filling in 121 with 113 spaced top of the spool and being disposed far from 113 one end of the spool Piston 123.

The top plug 121 is contained in the rear end sleeve 1111 and far from 113 one end of the spool.

Bearing surface between top plug described in the present embodiment 121 and the spool 113 is plane, passes through the pressure between plane Tightly so that the inlet 1135 is closed.Certainly, set-up mode is without being limited thereto, between the spool 113 and top plug 121 Bearing surface can be male and fomale(M＆F), the inlet 1135 is closed by the abutting between convex surface and concave surface.

The piston 123 is contained in the front end pedestal 1115.

The both ends of the adjustment spring 13 are separately connected the top plug 121 and the piston 123.

When the fluid pressure F1 is more than the air pressure F2, the top plug 121 squeezes the adjustment spring 13, from And make the adjustment spring 13 that the piston 123 be pushed to be moved toward far from 113 direction of the spool；As the fluid pressure F1 When less than the air pressure F2, the piston 123 squeezes the adjustment spring 13, so that the adjustment spring 13 pushes The top plug 121 is moved toward close to 113 direction of the spool.

In the present embodiment, the quantity of the control spring 14 is one comprising the first control spring 141, described the One 141 one end of control spring is connect with the spool 113 and the other end is connect with top plug 121.

The rear end sleeve 1111, the spool 113 and top plug 121 are enclosed one for accommodating liquid jointly Liquid storage space 15.The fluid hole 1112 is connected to the liquid storage space 15 to be connect with external equipment, by position Liquid in the liquid storage space 15 is delivered in external equipment.The first control spring 141 is set to the liquid In memory space 15.

The rear end sleeve 1111, top plug 121, the intermediate sleeve 1113, the front end pedestal 1115 and described Piston 123 is enclosed the collection space 16 of a receiving gas, the adjusting bullet close to described 1111 one end of rear end sleeve jointly Spring 13 is set in the collection space 16, and the collection space 16 is in communication with the outside by the stomata 1114.

The stomata 1114 is connected to the collection space 16 and the external world, can adjust the air pressure in the collection space 16 By force.

The front end pedestal 1115 is enclosed a receipts jointly with the piston 123 far from described 1111 one end of rear end sleeve Hold the storage space 17 of gas, the control piece 1116 is connected to the storage space 17.

The control piece 1116 is connected to the storage space 17, can adjust the atmospheric pressure in the storage space 17.

Specifically, the control piece 1116 can control the thrust to the piston 123, by the control piece 1116 toward institute State the thrust for being pressurized to achieve the effect that increase the piston 123 in storage space 17.

The piston 123 is abutted with 1115 inner wall of front end pedestal, by the collection space 16 and the storage space 17 isolations.

Preferably, compression seal is carried out by sealing ring between the piston 123 and the front end pedestal 1115.

More preferably, the sealing ring is fluorine-containing or carbon containing organic material sealing ring.

When the adjustment spring 13 using too long after there are aging conditions, elastic force increases and deforms with flexible number Extruding be gradually reduced, the shut-off valve 100 then will appear leakage situation at this time.By rotating the spool 113 so that described Spool 113 carries out micro movement in the rear end sleeve 10, and the spool 113 controls spring 141 by institute by described first Top plug 121 to be stated to squeeze toward far from 113 direction of the spool so that the top is filled in 121 pairs of adjustment springs 13 and is squeezed, from And the adjustment spring 13 is made to restore original elastic force.

Specifically, it is described first control spring 141 and the adjustment spring 13 mainly by chromium, silicon, nickel, aluminium, manganese, copper, Iron material is made, and mixes the elements such as a small amount of molybdenum, niobium, gallium, indium.With good corrosion resistance and good toughness.

The use state of shut-off valve 100 described in the present embodiment and use process：

Cut-off state：Liquid enters from the inlet 1135, when fluid pressure is smaller, the top can not be pushed to fill in 121 movements, fluid path keep cut-off state.

Circulation status：When hydraulic pressure is more than a certain limit value, the top plug 121 is moved to the direction far from the spool 113 It moves and squeezes the adjustment spring 13, the first control spring 141 is in tensional state at this time, and liquid passes through the spool Inlet 1135 described in 113 enter extraneous pipeline into the liquid storage space 15, and then from the fluid hole 1112 In.

Stress-relief process：The control piece 1116 is closed, the adjustment spring 13 resets, and the piston 123 is pulled to described 1115 bottom of front end pedestal；Liquid stops injection, and the first control spring 141 being extruded resets.

Adjustment process：When 13 aging of the adjustment spring can also push institute at this point, when Fluid pressure is less than rated pressure It states top plug 121 and squeezes the adjustment spring 13, liquid is by inlet 1135 described in the spool 113, into the liquid Memory space 15, and then enter in extraneous pipeline from the fluid hole 1112 and form leakage situation.It is described by rotating clockwise Spool 113, the inwardly micro movement of the spool 113, the first control spring 141 being connect with the spool 113 push institute Top plug 121 is stated to direction movement of the rear end sleeve 1111 far from the spool 113 and squeezes the adjustment spring 13, it is described Adjustment spring 13 is restored to holding and springy deformation power, recovery is answered to ensure specified hydraulic state.

Embodiment two

Referring to Fig. 2, present embodiments providing a kind of shut-off valve 2.The present embodiment and embodiment one are essentially identical, difference It is, the quantity of control spring 24 is two comprising one end and top are filled in 221 and connect and the other end is connect with spool 213 the One control spring 241, the second control spring that one end is connect with the piston 223 and the other end is connect with the control piece 2116 243。

In order to enable the second control spring 243 can pass through 223 squeeze adjustments spring 23 of the piston.

In the present embodiment, front end pedestal 2115 is sheathed in intermediate sleeve 2113, and the intermediate sleeve 2113 is close to institute It states 2115 one end inner surface of front end pedestal and is equipped with internal thread, the front end pedestal 2115 is outside 2113 one end of the intermediate sleeve Surface is equipped with external screw thread, and the intermediate sleeve 2113 and the front end pedestal 2115 are connected by screw thread between internal thread and external screw thread It connects, while control piece 2116 is solenoid valve in the present embodiment, passes through the second control bullet between the control piece 2116 and piston 223 Spring 243 connects, and the control piece 2116 controls the second control spring 243 to which control is to the thrust of the piston 223.

In the present embodiment, the top plug 221 and/or piston 223 are squeezed respectively by the two control springs 24 to regulate and control 23 elastic force of adjustment spring.

Certainly, in other embodiment, it can be provided only with the second control spring 243, by individually squeezing the piston 223 To realize regulation and control 23 elastic force of adjustment spring.

The use state of shut-off valve 2 described in the present embodiment and use process：

Cut-off state：Liquid enters from the inlet 2135, when fluid pressure is smaller, the top can not be pushed to fill in 221 movements, fluid path keep cut-off state.

Circulation status：When hydraulic pressure is more than a certain limit value, the top plug 221 is moved to the direction far from the spool 213 It moves and squeezes the adjustment spring 23, the first control spring 241 is in tensional state at this time, and liquid passes through the spool Inlet 2135 described in 213 enter extraneous pipeline into the fluid storage space 25, and then from the fluid hole 2112 In.

Stress-relief process：The control piece 2116 is closed, the first control spring 241 resets, and the adjustment spring 23 is multiple Position；Liquid stops injection, and the second control spring 243 being extruded resets.

Adjustment process：When 23 aging of the adjustment spring can also push institute at this point, when Fluid pressure is less than rated pressure It states top plug 221 and squeezes the adjustment spring 23, liquid is by inlet 2135 described in the spool 213, into the liquid Storage space 25, and then enter in extraneous pipeline from the fluid hole 2112 and form leakage situation.It is described by rotating clockwise Front end pedestal 2115, the micro movement into the intermediate sleeve 2113 of the front end pedestal 2115, the front end pedestal 2115 are logical Crossing the second control spring 243 pushes the piston 223 to squeeze the adjustment spring 23, and the adjustment spring 23 is restored to guarantor It holds and answers springy deformation power, recovery ensures specified hydraulic state.

Embodiment three

Referring to Fig. 3, present embodiments providing a kind of shut-off valve 3.The present embodiment and embodiment one are essentially identical, difference It is, the quantity of control spring 34 is two comprising one end and top are filled in 321 and connect and the other end is connect with spool 313 the One control spring 341, the second control spring that one end is connect with the piston 323 and the other end is connect with the control piece 3116 343。

In order to enable the second control spring 343 can pass through 323 squeeze adjustments spring 33 of the piston.

In the present embodiment, the control piece 3116 is jackscrew.The control piece 3116 leans on 3115 one end of front end pedestal Outer surface is equipped with external screw thread, while front end pedestal 3115 is close that internal thread, institute are equipped with 3116 one end junction of the control piece Control piece 3116 is stated with the front end pedestal 3115 by being threadedly coupled between external screw thread and internal thread, and the control piece 3116 are connect with piston 323 by the second control spring 343, are controlled by described second by rotating control piece 3116 Spring 343 processed pushes the piston 323.

In the present embodiment, the top plug 321 and/or piston 323 are squeezed respectively by the two control springs 34 to regulate and control 33 elastic force of adjustment spring.

Certainly, in other embodiment, both ends can be provided only with and be separately connected between the control piece 3116 and the piston 323 The second control spring 343, regulation and control 33 elastic force of adjustment spring can be realized by individually squeezing the piston 323 also.

The use state of shut-off valve 3 described in the present embodiment and use process：

Cut-off state：Liquid enters from the inlet 3135, when fluid pressure is smaller, can not push the top plug 321 Mobile, fluid path keeps cut-off state.

Circulation status：When hydraulic pressure is more than a certain limit value, the top plug 321 is moved to the direction far from the spool 313 It moves and squeezes the adjustment spring 33, the first control spring 341 is in tensional state at this time, and liquid passes through the spool Inlet 3135 described in 313 enter into liquid storage space 35, and then from fluid hole 3112 in extraneous pipeline.

Stress-relief process：Control piece 3116 described in reverse rotation, the first control spring 341 reset, the adjustment spring 33 It resets；Liquid stops injection, and the second control spring 343 being extruded resets.

Adjustment process：When 33 aging of the adjustment spring can also push institute at this point, when Fluid pressure is less than rated pressure It states top plug 321 and squeezes the adjustment spring 33, liquid is by inlet 3135 described in the spool 313, into the liquid Memory space 35, and then enter in extraneous pipeline from the fluid hole 3112 and form leakage situation.It is described by rotating clockwise Control piece 3116, the micro movement into the front end pedestal 3115 of the control piece 3116, the control piece 3116 pass through described Second control spring 343 pushes the piston 323 to squeeze the adjustment spring 33, and the adjustment spring 33, which is restored to holding, to be had The deformation power of elastic force, recovery ensure specified hydraulic state.

The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in Other relevant technical fields, are equally included in the patent within the scope of the utility model.

Claims

1. a kind of shut-off valve, the shut-off valve includes cut-off valve body, is contained in the cut-off valve body and can be along described section The cock body and the adjustment spring being contained in the cock body that only the central axes direction of valve body moves back and forth, it is characterised in that：Institute It further includes the control spring that one end is connect with the cock body and the other end is connect with the cut-off valve body to state shut-off valve.

2. shut-off valve according to claim 1, it is characterised in that：The cut-off valve body includes the valve body for having receiving space And set on described valve body one end and have the spool of inlet, institute's cock body is contained in the receiving space, the cock body include with The piston of described spool one end is filled in and is disposed far from the spaced top of spool, and the both ends of the adjustment spring are separately connected The top plug and the piston.

3. shut-off valve according to claim 2, it is characterised in that：The valve body include sequentially connected rear end sleeve, in Between sleeve, front end pedestal and control piece, the spool is contained in the rear end sleeve.

4. shut-off valve according to claim 3, it is characterised in that：The control spring includes that one end is connected with top plug And the first control spring that the other end is connect with the spool.

5. shut-off valve according to claim 4, it is characterised in that：The valve core outer surface is equipped with external screw thread, the rear end Sleeve interior surface is equipped with internal thread, and the spool is connect with the rear end bush whorl.

6. shut-off valve according to claim 5, it is characterised in that：It is empty that the front end pedestal and the piston surround storage Between, the control piece is pneumatic operated valve, and the volume of the storage space is controlled by the pneumatic operated valve.

7. shut-off valve according to claim 3, it is characterised in that：The control spring includes that one end is connect with the piston And the second control spring that the other end is connected with the control piece.

8. shut-off valve according to claim 7, it is characterised in that：The control piece is solenoid valve, in the intermediate sleeve Surface is equipped with internal thread, and the front end base outer surface is equipped with external screw thread, spiral shell between the intermediate sleeve and the front end pedestal Line connects.

9. shut-off valve according to claim 3, it is characterised in that：The control spring includes that one end is connected with top plug And the first control spring for being connect with the spool of the other end and one end is connect with the piston and the other end and the control piece Second control spring of connection.

10. shut-off valve according to claim 9, it is characterised in that：The control piece is jackscrew, and the jackscrew outer surface is set There are external screw thread, the front end base inner surface to be equipped with internal thread, be threadedly coupled between the jackscrew and the front end pedestal.