CN105889588A - Lining fluorine self-operated double-seat pressure adjusting valve - Google Patents
Lining fluorine self-operated double-seat pressure adjusting valve Download PDFInfo
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- CN105889588A CN105889588A CN201610251093.4A CN201610251093A CN105889588A CN 105889588 A CN105889588 A CN 105889588A CN 201610251093 A CN201610251093 A CN 201610251093A CN 105889588 A CN105889588 A CN 105889588A
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- valve
- pressure
- rod
- fluorine
- seater
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/44—Details of seats or valve members of double-seat valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Abstract
The invention relates to valves and provides a lining fluorine self-operated double-seat pressure adjusting valve. The lining fluorine self-operated double-seat pressure adjusting valve comprises a valve body, a valve rod and an actuating mechanism. The valve body is provided with a flow channel and a membrane cavity. The membrane cavity is provided with a valve closing membrane. The flow channel is provided with two valve seats with throttling holes, and the two valve seats are distributed in the axial direction of the valve rod. The flow channel is divided into a valve front section and a valve back section through the valve seats. The throttling holes communicate with the valve front section and the valve back section. The valve back section communicates with the membrane cavity. The valve rod is slidably connected in the valve body. One end of the valve rod is connected with the valve closing membrane, and valve cores used for sealing the throttling holes are connected to the other end of the valve rod. Fluorine layers are arranged in the parts, making contact with a medium passing through the flow channel, of the valve body, the valve rod and the valve cores. According to the provided lining fluorine self-operated double-seat pressure adjusting valve small in unbalanced force, the medium is transmitted to the actuating mechanism through the valve rod, and the problem that the pressure cannot be accurately controlled due to the fact that when an existing lining fluorine self-operated pressure adjusting valve is used, the unbalanced force applied to a valve core is completely transmitted to an actuating element actuating, and thus the pressure is higher or the caliber is larger is solved.
Description
Technical field
The present invention relates to valve, particularly relate to a kind of Fluorine-lined self-operated type two-seater pressure-regulating valve.
Background technology
The kind of valve has a lot, China Patent No. be 2014207986021, grant number is CN204592322U, i.e. discloses a kind of existing dedusting butterfly valve in the patent document of entitled " a kind of copper blast furnace off-gas dedusting butterfly valve ".Self-contained pressure regulator is to need not any external energy, utilizes the valve being automatically adjusted by tune medium self-energy.The maximum feature of self-contained pressure regulator is exactly to use in the place without electricity, depletion of QI, has saved again the energy simultaneously.Self-contained pressure regulator is applied widely, almost relate to all trades and professions, so that self-contained pressure regulator can be applied to the occasion that medium is strong acid and strong base, have devised Fluorine-lined self-contained pressure regulator, in valve, fluorine layer will be set with the part of medium contact.Existing Fluorine-lined self-contained pressure regulator can only do control valve before (pressure release type) and use at upstream pressure less than within 0.1MPa or bore less (less than DN50), because uprising once pressure or bore becoming big out-of-balance force the most greatly, after out-of-balance force is big, then pressure the most just cannot accurately control.
Summary of the invention
The invention provides a kind of medium and pass to, by valve rod, the Fluorine-lined self-operated type two-seater pressure-regulating valve that the out-of-balance force of actuator is little, solve that the out-of-balance force that when existing Fluorine-lined self-contained pressure regulator uses, spool is subject to can all pass to perform mechanism of unit and pressure cannot accurately control time the pressure that causes uprises or bore becomes big problem.
More than technical problem is that and solved by following technical proposal: a kind of Fluorine-lined self-operated type two-seater pressure-regulating valve, including valve body, valve rod and the actuator of regulation downstream pressure maximum, described valve body is provided with runner and diaphragm chamber, described diaphragm chamber is provided with conjunction valve film, described runner is provided with the valve seat of band throttle orifice, runner is divided into valve leading portion and valve back segment by described valve seat, described throttle orifice connects described valve leading portion and valve back segment, described valve back segment connects with described diaphragm chamber, described valve stem slides is connected in described valve body, one end of described valve rod links together with described conjunction valve film, the other end connects the spool for closing described throttle orifice, described valve body, the part that valve rod contacts with the medium flowing through runner with spool is designed with fluorine layer, it is characterized in that, described valve seat has two, said two valve seat is along the axial distribution of valve rod.Valve back segment after communicating valve leading portion and two valve seats axial distribution along valve rod is carried out by arranging two valve seats, the direction making the out-of-balance force that medium acts on two spools corresponding to valve seat is contrary, and such out-of-balance force can cancel each other to pass to the out-of-balance force of actuator through valve rod little by even zero.
As preferably, the sliding sleeve being made by strong alkali-acid resistance corrosion material it is provided with in described valve body, described valve stem slides is arranged in described valve pocket, and described valve back segment and diaphragm chamber are positioned at the two ends of described valve pocket, and described valve back segment is connected with described diaphragm chamber by the lie being arranged in described valve pocket.Can be by carrying out convenience during preservative treatment.
As preferably, described actuator includes valve opening spring that one end links together with described valve rod, the extrusion spring other end that is rotationally connected with valve body and adjust the pressure regulation bar of the elastic force of spring.Simple in construction, makes easy to use.
As preferably, described actuator also includes the holding rod being connected to pressure regulation bar, motor and powershift mechanism, described motor includes motor casing and motor shaft, described motor casing is fixed together with described holding rod, described pressure regulation bar is connected to one end of described motor shaft, described powershift mechanism includes the switch starting described motor, drive the pressing lever of described switch, the insertion spring that the latch being slidably connected in holding rod linked together with holding rod by motor shaft and driving latch are inserted in motor shaft, described latch is between described switch and pressing lever, described latch is provided with dodges hole, described hole of dodging is provided with the driving inclined-plane departing from motor shaft to drive described latch with the cooperation of described pressing lever.The technical program can either go to drive pressure regulation bar to rotate by manual rotation's holding rod, also be able to drive pressure regulation bar to rotate by motor.When driving pressure regulation bar to rotate by motor, pressing pressing lever, while pressing lever translates towards switch, pressing drives inclined-plane that latch translation is departed from motor shaft, pressing lever move to through dodge hole be pressed into switch or be switched on and off sense time (then sensing if inductive switch) time, from motor shaft, abjection makes holding rod disconnect with motor shaft to latch and motor is started completely, and electric motor starting rear drive pressure regulation bar rotates and realizes being threadedly coupled in screwed hole thread segment.When extracting pressing lever, switch off and motor is stopped, owing to pressing lever loses the Intercepting effects to latch, under the effect inserting spring, latch is inserted in motor shaft again, motor shaft can be driven to rotate when now rotating holding rod, motor shaft drives pressure regulation bar to rotate, namely can carry out manual rotation.
As preferably, described holding rod is arranged with handle sleeve, the elastic adjusting mechanism of the elastic force being provided with between described holding rod and handle sleeve between regulation handle sleeve and holding rod, described elastic adjusting mechanism includes the base tube being set in outside holding rod and being located in handle sleeve and is looped around the holding sheet outside described base tube, described holding sheet is constituted along the circumferentially distributed fricting strip of base tube by some pieces, described fricting strip is provided with some slide bars radially extended along base tube, described sliding bar is arranged in described base tube, the inner of described slide bar is provided with shift-in outside driving slide bar and drives fricting strip to be connected to spring together with handle sleeve, described elastic adjusting mechanism is additionally provided with the pretightning force adjustment structure of the pretightning force regulating described spring.During use, rotation pressure regulation bar is gone to drive spool to translate by gripping handle sleeve.Holding rod in the technical program has elasticity, thus comfortableness when improving use, the elastic effect in the technical program can also change, to adapt to different needs.The concrete regulation process of holding rod elasticity is, by pretightning force adjustment structure driving spring moving radially along base tube, so that fricting strip changes with the normal pressure of handle sleeve, thus realizing the change of pretightning force so that the size of the power that handle sleeve rocks relative to holding rod changes the elastic effect reaching different.
As preferably, described pretightning force adjustment structure includes the conical head of two tubular structures being supported on outside holding rod by base tube, drive conical head move axially and can make conical head stop at setting position driving structure and some push rods, said two conical head is slidably connected in the two ends of described base tube in the way of miner diameter end is arranged oppositely, the two ends of described push rod are shelved on the conical surface of said two conical head, the all of described slide bar of same fricting strip passes through described spring supporting on same described push rod, the described slide bar of each piece of fricting strip is respectively supported by a described push rod.During regulation, realize push rod moving radially thus realize the push rod change along base tube radial position along base tube by the position of axially varying conical head, thus realize the change of initial tension of spring.Convenience during regulation is good.
As preferably, described driving structure includes the jacking block in two two ends being threaded in described base tube, and said two conical head is between said two jacking block.Driving conical head to realize regulation by rotating jacking block, regulation puts in place, is automatically positioned, and convenience during use is more preferable.
As preferably, described motor is provided with binding post, described binding post includes insulator and is arranged at the wiring Copper Foil of insulator, described wiring Copper Foil is electrically connected with the coil of described motor, described wiring Copper Foil is provided with the wiring hole penetrated in described insulator, described wiring hole slidably connects sleeve, described sleeve includes the conductive segment together with being connected to of the insulating segment along sleeve axial distribution with wiring Copper Foil, be provided with in described insulator air cavity that the heat produced by wiring Copper Foil carries out heating and by the gas expansion in air cavity be driven for the overload response cylinder driving conductive segment to stagger with described wiring Copper Foil.During to motor wiring, power line is inserted and sleeve realizes with the electrical connection of sleeve, be that conductive segment links together with wiring Copper Foil and conducts during normal condition.Circuit can produce temperature rise when the load, gas in air cavity can produce expansion, overload response cylinder generation action during the gas expansion of air cavity and drive sleeve to slide in wiring hole, response air cylinder driven of then transshipping when temperature rise to design temperature slides into conductive segment to sleeve and staggers with wiring Copper Foil, thus realizes power-off；When after Failure elimination, temperature can decline, temperature declines the contraction of gas in then air cavity, the result shunk is that when temperature returns to normal value, then conductive segment links together with wiring Copper Foil again thus realizes automatically reseting so that sleeve slides towards the direction that same temperature rise phase is anti-in wiring hole.
As preferably, described overload response cylinder includes overload response cylinder block and overload response cylinder piston, described overload response cylinder block is divided into closing chamber and open cavity by described overload response cylinder piston, described closing chamber connects with described air cavity, and described overload response cylinder piston is linked together with described sleeve by connecting rod.Simple in construction.Easy to make.
As preferably, the axis of described overload response cylinder piston is parallel with the axis of described adapter sleeve.Reliability when overload response air cylinder driven sleeve moves can be improved and improve structural compactness further.
As preferably, described wiring hole is vertically extending, and described wiring Copper Foil is positioned at the lower end of described wiring hole, and described insulating segment is positioned at the lower section of described conductive segment, and described insulating segment is sealed connected together with described wiring hole, is filled with conductive liquid in described wiring hole.It can be avoided that repeatedly action produces sparking when producing electrical contact bad phenomenon after producing abrasion and prevent action.
As preferably, described insulating segment is provided with the exterior seal ring being sealed connected together with wiring hole by insulating segment and is used for the inner seal ring being sealed connected together with power line by insulating segment.Can both ensure that sleeve is reliably sealed connected together with wiring Copper Foil, and resistance when can reduce mobile.
As preferably, the inner peripheral surface of described insulating segment is provided with support ball.Resistance when can reduce mobile further, to improve sensitivity during dynamic overload response.
As preferably, the inner peripheral surface of described conductive segment is provided with the inner support shell fragment that radially-inwardly arches upward along conductive segment, outer peripheral face is provided with the outer support shell fragment radially outward arched upward along conductive segment.Can either improve reliability during relay contacts, resistance when can reduce mobile again is to improve response sensitivity.
The present invention has an advantage that the amount that upstream pressure and downstream pressure are conducted to actuator through valve rod is little, when making to be made as Large Diameter Pipeline from pressure-regulating valve and be applicable to the place of big pressure, actuator also is able to accurately control, make Fluorine-lined self-operated type two-seater pressure-regulating valve, not pressure (voltage stabilizing, pressure release) before luminous energy control valve, also can control downstream pressure (decompression, voltage stabilizing).
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of the present invention one.
Fig. 2 is the schematic diagram of the actuator in the embodiment of the present invention two.
Fig. 3 is the cross sectional representation of the holding rod in Fig. 2.
Fig. 4 is the axial cross-sectional schematic of the holding rod in Fig. 2.
Fig. 5 is the close-up schematic view at the A of Fig. 2.
Fig. 6 is the enlarged diagram of binding post.
Fig. 7 is binding post schematic diagram when linking together with power line.
nullIn figure: valve body 1、Runner 11、Valve leading portion 111、Valve back segment 112、Valve seat 12、Throttle orifice 13、Lie 15、Diaphragm chamber 17、Close valve film 171、Sliding sleeve 18、Fluorine layer 19、Powershift mechanism 2、Switch 21、Pressing lever 22、Latch 23、Dodge hole 231、Drive inclined-plane 232、Insert spring 24、Locking hole 25、Binding post 3、Wiring Copper Foil 31、Wiring hole 32、Air-vent 321、Insulator 33、Sleeve 34、Insulating segment 341、Conductive segment 342、Exterior seal ring 343、Inner seal ring 344、Support ball 345、Inner support shell fragment 346、Outer support shell fragment 347、Air cavity 35、Overload response cylinder 36、Overload response cylinder block 361、Close chamber 3611、Open cavity 3612、Pore 3613、Overload response cylinder piston 362、Connecting rod 363、Air flue 37、Power line 38、Actuator 4、Pressure regulation bar 41、Spring base 42、Valve opening spring 43、Motor 5、Motor casing 51、Motor shaft 52、Reductor 53、Holding rod 6、Handle sleeve 61、Spool 7、、Elastic adjusting mechanism 8、Base tube 81、Holding sheet 82、Fricting strip 821、Slide bar 822、Spring 823、Pretightning force adjustment structure 83、Conical head 831、Push rod 832、Drive structure 833、Jacking block 8331、Valve rod 9.
Detailed description of the invention
The present invention is further illustrated with embodiment below in conjunction with the accompanying drawings.
Embodiment one, sees Fig. 1, and a kind of Fluorine-lined self-operated type two-seater pressure-regulating valve, including valve body 1, valve rod 9 and actuator 4.Valve body 1 is made for rustless steel.Valve body 1 is provided with runner 11, diaphragm chamber 17 and sliding sleeve 18.Diaphragm chamber 17 is provided with conjunction valve film 171.Runner 11 is provided with two valve seats 12.Two valve seats 12 are along the axial distribution of valve rod 9.Valve seat 12 is provided with throttle orifice 13.Runner 11 is divided into valve leading portion 111 and valve back segment 112 by valve seat 12.Valve leading portion 111 is connected by two throttle orifices 13 with valve back segment 112 simultaneously.Sliding sleeve 18 is made by strong alkali-acid resistance corrosion material.Sliding sleeve 18 is between valve back segment 112 and diaphragm chamber 17.Sliding sleeve 18 is provided with lie 15.Valve back segment 112 is connected by lie 15 with diaphragm chamber 17.Valve rod 9 is slidably connected to sliding sleeve 18.The Ji Tuzhong lower end, one end of valve rod 9 is provided with two spools 7 simultaneously closing off two throttle orifices 13 correspondingly.The other end of valve rod 9 links together with closing valve film 171.The part that valve body 1, valve rod 9 contact with the medium flowing through runner with spool 7 is designed with fluorine layer 19.
Actuator 4 includes pressure regulation bar 41, spring base 42 and the valve opening spring 43 set gradually from the top down.Pressure regulation bar 41 is threadedly connected to valve body 1.One end of pressure regulation bar 41 is connected to the upside of spring base 42.Spring base 42 is pressed against the upper end of valve opening spring 43.The lower end of valve opening spring 43 is connected to the upper end of valve rod 9.
During use, on two spools produced out-of-balance force of circulating after fluid and valve before valve in opposite direction it is thus possible to cancel out each other so that the out-of-balance force passing to actuator 4 through valve rod 9 is little.
The present invention carries out pressure controlled process: the upstream pressure of valve leading portion 111 medium passes to valve back segment 112 through throttle orifice 13 and forms downstream pressure, and downstream pressure passes to close valve film 171 through lie 15, and involutory valve film 171 produces and upwards pressure.Along with the rising of downstream pressure, the power upwards producing diaphragm is increasingly greater than greatly the power of valve opening spring 43, thus overcomes the pressure of valve opening spring 43 to make to close valve film 171 and drive valve rod 9 to rise.When downstream pressure reaches the maximum set, two spools 7 are all brought together into closes two throttle orifices 13 on valve seat 12 so that downstream pressure stops rising.
When downstream pressure is gradually lowered, downstream pressure is less than the elastic force of valve opening spring 43 to the active force of diaphragm, valve opening spring 43 makes valve rod 9 move down and drive spool 7 to separate with valve seat 12, and now throttle orifice 13 is opened so that downstream pressure rises to the maximum set again.
The maximum of downstream pressure P2 extrudes valve opening spring 43 by rotation pressure regulation bar 41 and realizes regulating downstream pressure maximum with the elastic force changing valve opening spring 43.
Embodiment two, with the difference of embodiment one be:
Seeing Fig. 2, actuator 4 also includes holding rod 6, motor 5 and powershift mechanism 2.Pressure regulation bar 41 and holding rod 6 link together in " T " font.Holding rod 6 is provided with handle sleeve 61.Motor 5 includes motor casing 51 and motor shaft 52.Motor casing 51 is fixed together with holding rod 6.Motor casing 51 is provided with binding post 3.Pressure regulation bar 41 is connected to one end of motor shaft 52 by reductor 53.The other end of motor shaft 52 is located in holding rod 6.
See Fig. 3, between holding rod 6 and handle sleeve 61, be provided with elastic adjusting mechanism 8.Elastic adjusting mechanism 8 includes base tube 81, holding sheet 82 and pretightning force adjustment structure 83.Base tube 81 is set in outside holding rod 6.Base tube 81 is located in handle sleeve 61.Holding sheet 82 is made up of some pieces of fricting strips 821.Fricting strip 821 is circumferentially distributed along base tube 81.Fricting strip 821 is provided with some slide bars 822 radially extending axial distribution along base tube.Slide bar 822 slides and is arranged in base tube 81.The inner of slide bar 822 is provided with spring 823.Spring 823 drives fricting strip to be connected to together with handle sleeve 61 by slide bar.The pretightning force adjustment structure 83 of outer shifting includes two conical heads 831 and some push rods 832.Conical head 831 is tubular structure.Base tube 81 is linked together in being set on holding rod 6 and be located in base tube 81 by conical head 831 with holding rod 6.Conical head 831 is only slidably connected in base tube 81.Circumferentially distributed axially extending along base tube 81 of push rod 832.The all of slide bar 822 of same fricting strip 821 is supported on same push rod 832 by spring 823, and the slide bar of each piece of fricting strip is respectively supported by a push rod.
Seeing Fig. 4, two conical heads 831 are slidably connected in the two ends of base tube 81 in the way of miner diameter end is arranged oppositely.The two ends of push rod 832 are shelved on the conical surface of two conical heads 831.Pretightning force adjustment structure 83 also includes driving structure 833..Jacking block 8331 in driving structure 833 to include two two ends being threaded in base tube 81.Jacking block 8331 is set on holding rod 6.Two conical heads 831 are between two jacking blocks 8331.
Seeing Fig. 5, powershift mechanism 2 includes switching 21, pressing lever 22, latch 23 and insertion spring 24.Switch 21 and pressing lever 22 are positioned at the both sides of latch 23.Switch 21 is fixed in holding rod 6.Switch 21 is by compressing switch, owing to controlling motor 5 start and stop.Pressing lever 22 is located in holding rod 6.Latch 23 is slidably connected in holding rod 6.Motor shaft 52 is provided with the locking hole 25 inserted for latch 23.Latch 23 is provided with dodges hole 231.Dodge hole 231 for pressing lever 22 exceed latch 23 go drive switch 21.Dodge hole 231 and be provided with driving inclined-plane 232 towards one end of pressing lever 22.Insert spring 24 for driving latch 23 to be inserted in the locking hole 25 in motor shaft 52.
Seeing Fig. 6, binding post 3 includes insulator 33 and is arranged at the wiring Copper Foil 31 of insulator surface.Insulator 33 is fixed together with motor casing 51.Wiring Copper Foil 31 is electrically connected with the coil of motor.Wiring Copper Foil 31 is provided with wiring hole 32.Wiring hole 32 penetrates in insulator 33.Wiring hole 32 is the blind hole of vertically extending upper end closed.Wiring Copper Foil 31 is positioned at the lower end i.e. opening of wiring hole 32.Wiring hole 32 slidably connects sleeve 34.Sleeve 34 includes insulating segment 341 and conductive segment 342.Insulating segment 341 and conductive segment 342 are along sleeve 34 axial distribution.Insulating segment 341 is positioned at the lower section of conductive segment 342.Air cavity 35 and overload response cylinder 36 it is provided with in insulator 33.Wiring Copper Foil 31 constitutes a part for the wall of air cavity 35.Overload at least two, cylinder 36 of response.Overload response circumferentially distributed along sleeve 34 of cylinder 36.Overload response cylinder 36 includes overload response cylinder block 361 and overload response cylinder piston 362.Overload response cylinder block 361 is divided into closing chamber 3611 and open cavity 3612 by overload response cylinder piston 362.Close chamber 3611 to be connected with air cavity 35 by air flue 37.Open cavity 3612 is provided with pore 3613, i.e. realizes with atmosphere open by pore 3613.Overload response cylinder piston 362 is linked together with the insulating segment 341 in sleeve 34 by connecting rod 363.The axis of overload response cylinder piston 362 is parallel with the axis of sleeve 34.
Insulating segment 341 is arranged with exterior seal ring 343.Exterior seal ring 343 is rubber ring.Insulating segment 341 is sealed connected together by exterior seal ring 343 with wiring Copper Foil 31.Insulating segment 341 inner peripheral surface is provided with inner seal ring 344 and some support balls 345.The inner peripheral surface of conductive segment 342 is provided with inner support shell fragment 346.Inner support shell fragment 346 is the domes radially-inwardly arched upward along conductive segment.The outer peripheral face of conductive segment 342 is provided with outer support shell fragment 347.Outer support shell fragment 347 is the domes radially outward arched upward along conductive segment.Conductive segment 342 is connected to together with wiring Copper Foil 31 by outer support shell fragment 347.The upper end of wiring hole 32 is provided with air-vent 321.
See Fig. 7, when the power supply that induces one is to motor, one end that power line 38 is positioned at wiring Copper Foil 31 from wiring hole 32 is inserted sleeve 34.Insulating segment 341 is sealed connected together by inner seal ring 344 with power line 38.Inner support shell fragment 346 is connected to conductive segment 342 and power line 38 electric conductivity be linked together together with power line 38 elasticity.Conductive liquid is added in wiring hole 32.
Wiring Copper Foil 31 can produce temperature rise when the load, gas in air cavity 35 can produce expansion and iodine produces distillation and the air pressure in air cavity 35 is raised, and the structure that air pressure raises is that the gas inlet road 37 in air cavity 35 flows to close in chamber 3611 and drives (pressure in open cavity 3612 remains identical with atmospheric pressure) overload response cylinder piston 362 to move up.Overload response cylinder piston 362 by connecting rod 363 drive sleeve 34 wiring hole 32 on shifting.The response cylinder 36 that then transships when temperature rise to design temperature drive sleeve to slide into conductive segment 342 staggers with wiring Copper Foil 31 and insulating segment 341 contacts with wiring Copper Foil 31, thus realize power-off.When after Failure elimination, temperature can decline, temperature declines, and contraction of gas in air cavity 35 and iodine become solid-state and the air pressure in air cavity 36 is declined, the result declined is for making sleeve 34 slide downward in wiring hole 32, and when temperature returns to normal value, then conductive segment 342 links together with wiring Copper Foil 31 again thus realizes automatically reseting.
See Fig. 5, the present embodiment carries out the process of powershift: when pressing lever 22 is in and extracts state, under the effect inserting spring 24, latch 23 is inserted into dodge and holding rod 6 and motor shaft 52 is linked together in hole 231, now switch 21 is off, motor 5 is stopping, can only manual rotation, the most manually grip handle sleeve 61 and rotate holding rod 6, holding rod 6 drives motor shaft 52 to rotate together by latch 23, drives pressure regulation bar 41 to rotate and realize driving valve rod 9 to lift when motor shaft 52 rotates.
Need to carry out motor when driving, press pressing lever 22, pressing lever 22 move down while under the effect driving inclined-plane 232, latch 23 is extracted and is dodged the sheathed of hole 231 and make by pressing spring 24 energy storage.When pressing lever 22 is applied to switch 21, latch 23 complete to extract dodge hole 231 i.e. motor shaft 52 disconnect with holding rod 6, now motor 5 electric and start, electric motor starting rear motor axle 52 rotates and drives pressure regulation bar 41 to rotate.When extracting pressing lever 22 and make pressing lever lose the effect to switch 21, motor dead electricity stops.
See Fig. 3 and Fig. 4, the process of the elastic effect adjusting handle sleeve is: drive conical head 831 axially moving along base tube 81 by rotating jacking block 8331, conical head 831 drives push rod 832 moving radially along base tube 81, push rod 832 extrusion spring 823 and change pretightning force.
Claims (10)
1. a Fluorine-lined self-operated type two-seater pressure-regulating valve, including valve body, valve rod and the actuator of regulation downstream pressure maximum, described valve body is provided with runner and diaphragm chamber, described diaphragm chamber is provided with conjunction valve film, described runner is provided with the valve seat of band throttle orifice, runner is divided into valve leading portion and valve back segment by described valve seat, described throttle orifice connects described valve leading portion and valve back segment, described valve back segment connects with described diaphragm chamber, described valve stem slides is connected in described valve body, one end of described valve rod links together with described conjunction valve film, the other end connects the spool for closing described throttle orifice, described valve body, the part that valve rod contacts with the medium flowing through runner with spool is designed with fluorine layer, it is characterized in that, described valve seat has two, said two valve seat is along the axial distribution of valve rod.
Fluorine-lined self-operated type two-seater pressure-regulating valve the most according to claim 1, it is characterized in that, the sliding sleeve being made by strong alkali-acid resistance corrosion material it is provided with in described valve body, described valve stem slides is arranged in described valve pocket, described valve back segment and diaphragm chamber are positioned at the two ends of described valve pocket, and described valve back segment is connected with described diaphragm chamber by the lie being arranged in described valve pocket.
Fluorine-lined self-operated type two-seater pressure-regulating valve the most according to claim 1 and 2, it is characterized in that, described actuator includes valve opening spring that one end links together with described valve rod, the extrusion spring other end that is rotationally connected with valve body and adjust the pressure regulation bar of the elastic force of spring.
Fluorine-lined self-operated type two-seater pressure-regulating valve the most according to claim 3, it is characterized in that, described actuator also includes the holding rod being connected to pressure regulation bar, motor and powershift mechanism, described motor includes motor casing and motor shaft, described motor casing is fixed together with described holding rod, described pressure regulation bar is connected to one end of described motor shaft, described powershift mechanism includes the switch starting described motor, drive the pressing lever of described switch, the insertion spring that the latch being slidably connected in holding rod linked together with holding rod by motor shaft and driving latch are inserted in motor shaft, described latch is between described switch and pressing lever, described latch is provided with dodges hole, described hole of dodging is provided with the driving inclined-plane departing from motor shaft to drive described latch with the cooperation of described pressing lever.
Fluorine-lined self-operated type two-seater pressure-regulating valve the most according to claim 4, it is characterized in that, described holding rod is arranged with handle sleeve, the elastic adjusting mechanism of the elastic force being provided with between described holding rod and handle sleeve between regulation handle sleeve and holding rod, described elastic adjusting mechanism includes the base tube being set in outside holding rod and being located in handle sleeve and is looped around the holding sheet outside described base tube, described holding sheet is constituted along the circumferentially distributed fricting strip of base tube by some pieces, described fricting strip is provided with some slide bars radially extended along base tube, described sliding bar is arranged in described base tube, the inner of described slide bar is provided with shift-in outside driving slide bar and drives fricting strip to be connected to spring together with handle sleeve, described elastic adjusting mechanism is additionally provided with the pretightning force adjustment structure of the pretightning force regulating described spring.
Fluorine-lined self-operated type two-seater pressure-regulating valve the most according to claim 5, it is characterized in that, described pretightning force adjustment structure includes the conical head of two tubular structures being supported on outside holding rod by base tube, drive conical head move axially and can make conical head stop at setting position driving structure and some push rods, said two conical head is slidably connected in the two ends of described base tube in the way of miner diameter end is arranged oppositely, the two ends of described push rod are shelved on the conical surface of said two conical head, the all of described slide bar of same fricting strip passes through described spring supporting on same described push rod, the described slide bar of each piece of fricting strip is respectively supported by a described push rod.
Fluorine-lined self-operated type two-seater pressure-regulating valve the most according to claim 6, it is characterised in that described driving structure includes the jacking block in two two ends being threaded in described base tube, and said two conical head is between said two jacking block.
Fluorine-lined self-operated type two-seater pressure-regulating valve the most according to claim 4, it is characterized in that, described motor is provided with binding post, described binding post includes insulator and is arranged at the wiring Copper Foil of insulator, described wiring Copper Foil is electrically connected with the coil of described motor, described wiring Copper Foil is provided with the wiring hole penetrated in described insulator, described wiring hole slidably connects sleeve, described sleeve includes the conductive segment together with being connected to of the insulating segment along sleeve axial distribution with wiring Copper Foil, be provided with in described insulator air cavity that the heat produced by wiring Copper Foil carries out heating and by the gas expansion in air cavity be driven for the overload response cylinder driving conductive segment to stagger with described wiring Copper Foil.
Fluorine-lined self-operated type two-seater pressure-regulating valve the most according to claim 8, it is characterized in that, described overload response cylinder includes overload response cylinder block and overload response cylinder piston, described overload response cylinder block is divided into closing chamber and open cavity by described overload response cylinder piston, described closing chamber connects with described air cavity, and described overload response cylinder piston is linked together with described sleeve by connecting rod.
Fluorine-lined self-operated type two-seater pressure-regulating valve the most according to claim 8, it is characterized in that, described wiring hole is vertically extending, described wiring Copper Foil is positioned at the lower end of described wiring hole, described insulating segment is positioned at the lower section of described conductive segment, described insulating segment is sealed connected together with described wiring hole, is filled with conductive liquid in described wiring hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610251093.4A CN105889588A (en) | 2016-04-21 | 2016-04-21 | Lining fluorine self-operated double-seat pressure adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610251093.4A CN105889588A (en) | 2016-04-21 | 2016-04-21 | Lining fluorine self-operated double-seat pressure adjusting valve |
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| CN105889588A true CN105889588A (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610251093.4A Pending CN105889588A (en) | 2016-04-21 | 2016-04-21 | Lining fluorine self-operated double-seat pressure adjusting valve |
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| CN111570426A (en) * | 2020-05-24 | 2020-08-25 | 江山市发发科技有限公司 | Pre-assembled medical flusher |
| CN112524312A (en) * | 2020-12-30 | 2021-03-19 | 山西建工申华暖通设备有限公司 | Self-operated flow control valve with piston structure |
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Application publication date: 20160824 |