CN110017381A - A kind of pilot valve for pressure reducing valve - Google Patents
A kind of pilot valve for pressure reducing valve Download PDFInfo
- Publication number
- CN110017381A CN110017381A CN201910272602.5A CN201910272602A CN110017381A CN 110017381 A CN110017381 A CN 110017381A CN 201910272602 A CN201910272602 A CN 201910272602A CN 110017381 A CN110017381 A CN 110017381A
- Authority
- CN
- China
- Prior art keywords
- hole
- valve body
- pole
- center
- pressure reducing
- 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.)
- Pending
Links
- 230000008676 import Effects 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- 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
- F16K1/42—Valve seats
-
- 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
- F16K1/46—Attachment of sealing rings
- F16K1/465—Attachment of sealing rings to the valve seats
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
-
- 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
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
-
- 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
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1223—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being acted upon by the circulating fluid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to a kind of pilot valves for pressure reducing valve, it includes upper valve body and lower valve body, the top of upper valve body is provided with regulating device, the lower end of regulating device, which is located in upper valve body, is provided with compressed spring, inlet and outlet is offered in lower valve body, vertical through-hole is provided in the middle part of the lower valve body, center-pole is slidably connected in through-hole, the lower end of center-pole is provided with throttling set, the upper end of the lower valve body is wholely set vertical sleeve, piston is equipped in sleeve, the lower end of compressed spring is connected to the upper surface of piston, the upper end of center-pole is connected to the lower surface of piston；The import is connected to the middle part of through-hole, and outlet is connected to by throttling set with the lower end of through-hole, and outlet is in the lower end of sleeve.The present invention has the effect of improving its service life.
Description
Technical field
The present invention relates to a kind of technical fields of structure of relief pressure valve, more particularly, to a kind of pilot valve for pressure reducing valve.
Background technique
Pressure reducing valve is common pressure control valve in hydraulic system, is a kind of pressure-regulating valve, is commonly used for stablizing oil circuit
Operating pressure.Pressure reducing valve can be divided into direct acting pressure and piloted reducer by structure and working principle difference.Pilot-operated type subtracts
Pressure valve is needed using pilot valve, and for pilot valve as a kind of control mechanism for control bound, pilot valve is control outside pressure reducing valve
The functional part of tubulation road core, for adjusting the unlatching of main valve and the size of closure, to realize to main valve downstream pressure
Control.
A kind of pilot valve for pressure reducing valve is disclosed in the patent document that Authorization Notice No. is CN202812359U, including
Upper valve body and lower valve body；The top of the upper valve body is equipped with internal thread part, and pressure setting screw is equipped in the internal thread part；Institute
It states lower valve body and is equipped with the upstream and downstream pipe for being connected to its inner cavity；It further include the linkage closing on center line
System, the system include the center-pole that lower end is pierced by from the upstream, are from top to bottom successively worn on the center-pole
Equipped with spring, diaphragm and baffle, the spring is located at the top of center-pole, and the diaphragm is fixed in center-pole by fixture block
Portion, its edge are located between the upper valve body and lower valve body, and the baffle is fixed on upstream tube described in center-pole bottom end, face
The nozzle on road；It is additionally provided with briquetting on the top of the spring, the bottom end of the pressure setting screw is against the briquetting.
Diaphragm is fixed on center-pole in such structure, when work, due to carrying out under the action of the spring in center-pole
It vibrates up and down and adjusts pressure, so that center-pole drives diaphragm vibration, since diaphragm is easy aging during continuously selling off, subtract
Its few service life.
Summary of the invention
The object of the present invention is to provide a kind of pilot valve for pressure reducing valve, have the effect of improving its service life.
Foregoing invention purpose of the invention has the technical scheme that
A kind of pilot valve for pressure reducing valve, including upper valve body and lower valve body, the top of upper valve body are provided with regulating device, adjust
The lower end of device, which is located in upper valve body, is provided with compressed spring, offers inlet and outlet in lower valve body, in the lower valve body
Portion is provided with vertical through-hole, and center-pole is slidably connected in through-hole, and the lower end of center-pole is provided with throttling set, the lower valve
The upper end of body is wholely set vertical sleeve, and piston is equipped in sleeve, and the lower end of compressed spring is connected to piston
The upper end of upper surface, center-pole is connected to the lower surface of piston；The import is connected to the middle part of through-hole, and outlet passes through throttling dress
It sets and is connected to the lower end of through-hole, and outlet is in the lower end of sleeve.
By using above-mentioned technical proposal, the sleeve being arranged between upper valve body and lower valve body is provided with piston in sleeve, out
Mouth is connected to the lower end of sleeve, and the lower end of compressed spring is connected to piston, and dividing sleeve by piston is two parts, makes piston
The fluid connection of lower surface and outlet outflow, outlet are also connected to the lower end of through-hole by throttling set, thus in import into
After entering the liquid with pressure, after the fluid pressure variation in exit, liquid pushes piston and slides up and down in sleeve, to make
It is slided up and down by piston, and then improves its service life.
The present invention is further arranged to: venthole is offered on the side wall of the upper valve body, venthole is connected to sleeve
Upper end.
By using above-mentioned technical proposal, venthole is opened up on the side wall of upper valve body, venthole can make the upper end of sleeve
With extraneous atmosphere, it is easier moving up and down for piston in the process.
The present invention is further arranged to: the piston includes ontology and sealing ring, and ontology is the cylindrical inner wall with sleeve
Cooperate, offers annular groove one on the side wall of the ontology, sealing ring is located in annular groove one, and the inner wall of sealing ring and sleeve
Contradict sealing.
By using above-mentioned technical proposal, the inner wall of ontology and sleeve cooperates, and opens up annular groove one on the side wall of ontology, close
Seal is located in annular groove one, and annular groove one is located on ontology, keeps the processing of annular groove one more convenient, on the other hand makes ontology
The better tightness between sleeve, and the service life is longer in annular groove one for sealing ring.
The present invention is further arranged to: the position of the center-pole and through-hole cooperation offers annular groove two, annular groove two
It is inside provided with O-ring, O-ring contradicts on the inner walls of the via.
By using above-mentioned technical proposal, the position of center-pole and through-hole cooperation opens up annular groove two, due to annular groove two
It is inside provided with O-ring, so that O-ring be made to be located in annular groove two, makes better tightness of the center-pole in through-hole.
The present invention is further arranged to: the throttling set includes top cap, squeezes spring and centrally disposed bar lower end
Tapered surface, tapered surface is located at the lower end of through-hole and the outside diameter of tapered surface and the diameter of through-hole are equal；Top cap is threaded in
The lower end of lower valve body squeezes spring and is connected between top cap and center-pole, and the length direction for squeezing spring is vertically arranged.
By using above-mentioned technical proposal, top cap is connected in lower valve body, makes to accompany extruding bullet between top cap and center-pole
Spring provides the thrust moved up to center-pole by extruding spring, to make tapered surface during center-pole moves up
With the space change between through-hole lower end, throttle to the lower end position of through-hole.
The present invention is further arranged to: sealing-plug is provided between the center-pole and extruding spring, sealing-plug includes plug
Body and seal receptacle, cock body vertical sliding are connected in top cap, and the upper end of cock body offers embedding hole, and seal receptacle is located in embedding hole, and
And the middle part of seal receptacle is run through in the lower end of center-pole, the lower end of tapered surface is against on seal receptacle, and the upper surface of seal receptacle is for blocking up
In the lower end of through-hole.
By using above-mentioned technical proposal, cock body is slidably connected in top cap, is made the lower end of center-pole and is capable of cock body
It is oriented under effect, so that center-pole holding be made to be vertically arranged in through-hole.
The present invention is further arranged to: the seal receptacle is made of vulcanizing treatment rubber.
By using above-mentioned technical proposal, on the one hand seal receptacle increases seal receptacle made of the rubber of vulcanizing treatment
Intensity, on the other hand make the connection of seal receptacle and cock body more can jail, reduce falling off for seal receptacle.
The present invention is further arranged to: the circumferential direction on the lower end surface of the through-hole along through-hole is provided with flange, seal receptacle
For being connected to flange.
By using above-mentioned technical proposal, flange is set, seal receptacle is convex by being connected on flange on the lower end surface of through-hole
Edge, which increases the deformation of seal receptacle, to exist, so as to increase seal receptacle to the close property of through-hole lower end,.
The present invention is further arranged to: the regulating device includes briquetting and screw rod, and screw rod is vertically arranged, and screw flight connects
It connects on upper valve body, briquetting is pressed in the upper end of compressed spring, and the lower end of screw rod is connected to the upper surface of briquetting.
By using above-mentioned technical proposal, briquetting is arranged in the lower end of screw rod, opposite between briquetting and screw rod when rotating screw rod
Rotation reduces bounce of the compressed spring in adjustment process so that briquetting be made to be against the upper end of compressed spring.
The present invention is further arranged to: the lower end of the screw rod is provided with taper, and the upper surface of briquetting offers bellmouth,
The lower end of screw rod is inserted in bellmouth.
By using above-mentioned technical proposal, the lower end setting of screw rod is tapered and is inserted in bellmouth, to make briquetting
Center is overlapped with the center of screw rod, prevents briquetting and screw rod from misplacing.
In conclusion advantageous effects of the invention are as follows:
1. being provided with piston in sleeve by the sleeve being arranged between upper valve body and lower valve body, outlet and the lower end of sleeve connect
Logical, the lower end of compressed spring is connected to piston, and dividing sleeve by piston is two parts, flows out the lower surface of piston and outlet
Fluid connection, outlet also be connected to the lower end of through-hole by throttling set, to enter the liquid for having pressure in import
Afterwards, after the fluid pressure variation in exit, liquid pushes piston and slides up and down in sleeve, to make it through the upper and lower of piston
Sliding, and then improve its service life；
2. cooperating by the inner wall of ontology and sleeve, annular groove one is opened up on the side wall of ontology, sealing ring is located in annular groove one,
Annular groove one is located on ontology, keeps the processing of annular groove one more convenient, on the other hand makes between ontology and sleeve leakproofness more
It is good, and the service life is longer in annular groove one for sealing ring；
3. being made by the rubber that seal receptacle is carried out to vulcanizing treatment, on the one hand increases the intensity of seal receptacle, on the other hand make close
The connection for sealing seat and cock body more can be firm, reduces falling off for seal receptacle.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the partial enlargement diagram of part A in Fig. 1.
In figure, 1, upper valve body；11, venthole；2, lower valve body；21, import；22, it exports；23, sleeve；24, through-hole；3, in
Core bar；31, annular groove two；32, O-ring；4, piston；41, ontology；42, sealing ring；43, annular groove one；5, compressed spring；6,
Regulating device；61, briquetting；62, screw rod；63, bellmouth；7, throttling set；71, top cap；72, spring is squeezed；73, tapered surface；
74, pilot hole；75, sealing-plug；751, cock body；752, seal receptacle；753, embedding hole；8, flange.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
It is a kind of pilot valve for pressure reducing valve disclosed by the invention, including upper valve body 1 and lower valve body 2 with reference to Fig. 1, under
Sleeve 23 is provided on valve body 2 with the junction of upper valve body 1, sleeve 23 is integrally disposed upon in lower valve body 2, on the outer wall of sleeve 23
External screw thread is offered, upper valve body 1 is threaded on the outer wall of sleeve 23.It is vertical to offer in the center of lower valve body 2
The center line of through-hole 24, through-hole 24 is overlapped with the center line of sleeve 23, and center-pole 3 is provided in through-hole 24, and center-pole 3 is vertical
It is slidably connected in through-hole 24, center-pole 3 can be slided along the length direction of through-hole 24, and the upper surface of center-pole 3 is connected to work
The lower surface of plug 4.Piston 4 is provided in sleeve 23, sleeve 23 is cylinder, and piston 4 is equipped in sleeve 23, piston
4 include ontology 41 and sealing ring 42, and ontology 41 is that cylindrical and ontology 41 diameter is equal with the diameter of sleeve 23, in ontology 41
Side wall on offer annular groove 1, sealing ring 42 is embedded into annular groove 1, and sealing ring 42 is connected to sleeve 23
Inner wall on, the better tightness between piston 4 and the inner wall of sleeve 23.The upper surface of piston 4 is provided with compressed spring 5,
Compressed spring 5 is vertically arranged, and the center line of compressed spring 5 is overlapped with the center line of sleeve 23, and the lower end of compressed spring 5 is against work
The upper surface of plug 4, upper end are provided with regulating device 6, and regulating device 6 is used to adjust the elastic force of compressed spring 5.
With reference to Fig. 1, import 21 and outlet 22 are offered in lower valve body 2, the diameter of 3 upper end of center-pole is straight with through-hole 24
Diameter is equal, and annular groove 2 31 is offered on the side wall of the upper end of center-pole 3, and O-ring 32, O is provided in annular groove 2 31
Type circle 32 contradicts on the inner wall of through-hole 24；The diameter of 3 lower end of center-pole is less than the diameter of through-hole 24, import 21 and through-hole 24
Middle part connection, import 21 and the connection of through-hole 24 are located in the lesser position of 3 diameter of center-pole.The lower end of center-pole 3 is arranged
There is throttling set 7, throttling set 7 is located at the lower end outlet 22 of through-hole 24；Outlet 22 passes through under throttling set 7 and through-hole 24
End connection, makes the fluid pressure flowed into import 21 be greater than the fluid pressure of 22 outflow of outlet, and outlet 22 is also connected to sleeve 23
Lower end；Venthole 11 is offered on the side wall of upper valve body 1, venthole 11 is connected to the upper end of sleeve 23.At outlet 22
When liquid fluid power increases, the fluid pressure at outlet 22 is flowed into the lower end of sleeve 23, the liquid that the lower surface of piston 4 is subject to
Body pressure rises, thus keep the throttling set 7 positioned at 3 lower end of center-pole mobile, thus make the increase amount of restriction of throttling set 7,
To make the pressure of outlet 22 reduce.
With reference to Fig. 1 and Fig. 2, throttling set 7 includes top cap 71, the taper for squeezing spring 72 and 3 lower end of centrally disposed bar
Face 73, top cap 71 is located at the lower end of lower valve body 2, and top cap 71 is threaded in lower valve body 2, is detachably connected top cap 71
In lower valve body 2, pilot hole 74, the center line of pilot hole 74 and the center line weight of through-hole 24 are offered in the inside of top cap 71
It closes, sealing-plug 75 is equipped in pilot hole 74, sealing-plug 75 includes cock body 751 and seal receptacle 752, and the sliding of cock body 751 connects
It connects in pilot hole 74, the upper end of cock body 751 offers embedding hole 753, and seal receptacle 752 is embedded in embedding hole 753, and seal receptacle
752, by vulcanizing treatment, make seal receptacle 752 be bonded together with cock body 751, reduce seal receptacle 752 and fall off from cock body 751.
The middle part of seal receptacle 752 is run through in the lower end of center-pole 3, and the big end of tapered surface 73 is connected to the upper table of seal receptacle 752 downward
Face.Tapered surface 73 is located at outside the lower end of through-hole 24, and the diameter of 73 big end of tapered surface is equal to the lower diameter of 24 lower end of through-hole.Work as cone
During moving up with center-pole 3, tapered surface 73 and the flow area that can reduce through-hole 24 make liquid in shape face 73
It throttles at tapered surface 73.It squeezes spring 72 to be located in pilot hole 74, and squeezes spring 72 and be vertically arranged, squeeze spring
72 lower end is connected to the lower end of pilot hole 74, and the upper end for squeezing spring 72 is against on cock body 751, makes cock body 751 by seal receptacle
752 are extruded in the big end of tapered surface 73.
With reference to Fig. 2, the circumferential direction of through-hole 24 is provided with flange 8 on the end face of the lower end of through-hole 24, seal receptacle 752
Upper surface is corresponding with flange 8, and when the pressure of the liquid entered in import 21 is smaller, the upper surface of seal receptacle 752 is extruded in convex
On edge 8, it is sealed seal receptacle 752 to the lower end of through-hole 24.
With reference to Fig. 1, regulating device 6 includes briquetting 61 and screw rod 62, and screw rod 62 is vertically arranged, and the lower end of screw rod 62 is arranged to
Taper is provided with briquetting 61 in the lower end of screw rod 62, and the upper surface of briquetting 61 offers bellmouth 63, and the lower end of screw rod 62 is inserted in
In bellmouth 63, and the upper end of compressed spring 5 is against on the lower surface of briquetting 61.Screw rod 62 is threaded on upper valve body 1.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of pilot valve for pressure reducing valve, including upper valve body (1) and lower valve body (2), the top of upper valve body (1) are provided with tune
Regulating device (6), the lower end of regulating device (6), which is located in upper valve body (1), to be provided with compressed spring (5), and lower valve body offers on (2)
Import (21) and outlet (22), it is characterised in that: be provided with vertical through-hole (24), through-hole in the middle part of the lower valve body (2)
(24) in slidably connect center-pole (3), the lower end of center-pole (3) is provided with throttling set (7), the lower valve body (2) it is upper
End is wholely set vertical sleeve (23), is equipped with piston (4) in sleeve (23), and the lower end of compressed spring (5) abuts
In the upper surface of piston (4), the upper end of center-pole (3) is connected to the lower surface of piston (4)；The import (21) and through-hole (24)
Middle part connection, outlet (22) is connected to by throttling set (7) with the lower end of through-hole (24), and is exported (22) and be connected to sleeve
(23) lower end.
2. a kind of pilot valve for pressure reducing valve according to claim 1, it is characterised in that: the side of the upper valve body (1)
It is offered on wall venthole (11), venthole (11) is connected to the upper end of sleeve (23).
3. a kind of pilot valve for pressure reducing valve according to claim 1 or 2, it is characterised in that: the piston (4) includes
Ontology (41) and sealing ring (42), ontology (41) are that the cylindrical inner wall with sleeve (23) cooperates, the side wall of the ontology (41)
On offer annular groove one (43), sealing ring (42) is located in annular groove one (43), and sealing ring (42) and sleeve (23) is interior
Wall contradicts sealing.
4. a kind of pilot valve for pressure reducing valve according to claim 3, it is characterised in that: the center-pole (3) and logical
The position of hole (24) cooperation offers annular groove two (31), is provided with O-ring (32) in annular groove two (31), O-ring (32) supports
Touching is on the inner wall of through-hole (24).
5. a kind of pilot valve for pressure reducing valve according to claim 1, it is characterised in that: throttling set (7) packet
The tapered surface (73) for including top cap (71), squeezing spring (72) and centrally disposed bar (3) lower end, tapered surface (73) are located at through-hole
(24) outside diameter of lower end and tapered surface (73) is equal with the diameter of through-hole (24)；Top cap (71) is threaded in lower valve body
(2) lower end squeezes spring (72) and is connected between top cap (71) and center-pole (3), and the length direction for squeezing spring (72) is perpendicular
Straight setting.
6. a kind of pilot valve for pressure reducing valve according to claim 5, it is characterised in that: the center-pole (3) and squeeze
It is provided between pressing spring (72) sealing-plug (75), sealing-plug (75) includes cock body (751) and seal receptacle (752), cock body (751)
Vertical sliding is connected on top cap (71), and the upper end of cock body (751) offers embedding hole (753), and seal receptacle (752) is located at embedding hole
(753) in, and the middle part of seal receptacle (752) is run through in the lower end of center-pole (3), and the lower end of tapered surface (73) is against seal receptacle
(752) on, the upper surface of seal receptacle (752) is used to get lodged in the lower end of through-hole (24).
7. a kind of pilot valve for pressure reducing valve according to claim 6, it is characterised in that: the seal receptacle (752) is
Made of vulcanizing treatment rubber.
8. a kind of pilot valve for pressure reducing valve according to claim 5 or 6, it is characterised in that: the through-hole (24)
It is provided with flange (8) on lower end surface along the circumferential direction of through-hole (24), seal receptacle (752) is for being connected to flange (8).
9. a kind of pilot valve for pressure reducing valve according to claim 1, it is characterised in that: regulating device (6) packet
Briquetting (61) and screw rod (62) are included, screw rod (62) is vertically arranged, and screw rod (62) is threaded on upper valve body (1), briquetting (61)
It is pressed in the upper end of compressed spring (5), the lower end of screw rod (62) is connected to the upper surface of briquetting (61).
10. a kind of pilot valve for pressure reducing valve according to claim 9, it is characterised in that: under the screw rod (62)
End is provided with taper, and the upper surface of briquetting (61) offers bellmouth (63), and the lower end of screw rod (62) is inserted in bellmouth (63).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910272602.5A CN110017381A (en) | 2019-04-04 | 2019-04-04 | A kind of pilot valve for pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910272602.5A CN110017381A (en) | 2019-04-04 | 2019-04-04 | A kind of pilot valve for pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110017381A true CN110017381A (en) | 2019-07-16 |
Family
ID=67190634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910272602.5A Pending CN110017381A (en) | 2019-04-04 | 2019-04-04 | A kind of pilot valve for pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110017381A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075937A (en) * | 2019-12-19 | 2020-04-28 | 上海百图低温阀门有限公司 | Large-drift-diameter piston type pressure regulating valve |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3348573A (en) * | 1965-04-19 | 1967-10-24 | Grove Valve & Regulator Co | Fluid pressure regulator having a guided pressure responsive member |
| RU2406903C1 (en) * | 2009-09-17 | 2010-12-20 | Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт автоматики им. Н.Л. Духова" (ФГУП "ВНИИА") | Reducing valve |
| CN102678994A (en) * | 2012-05-17 | 2012-09-19 | 浙江维卫电子洁具有限公司 | Novel automatic decompression voltage and current stabilizer |
| CN203686285U (en) * | 2014-01-17 | 2014-07-02 | 宁波星箭航天机械有限公司 | Constant pressure reducing valve |
| CN203730774U (en) * | 2014-01-17 | 2014-07-23 | 宁波星箭航天机械有限公司 | High pressure gas pressure reducing valve |
| CN204878756U (en) * | 2015-08-20 | 2015-12-16 | 宁波市华益气动工程有限公司 | Seal structure of relief pressure valve |
| CN207514319U (en) * | 2017-11-10 | 2018-06-19 | 瑞立集团瑞安汽车零部件有限公司 | A kind of pressure reducing valve |
| CN108506544A (en) * | 2018-04-26 | 2018-09-07 | 中煤科工集团重庆研究院有限公司 | Pressure adjustable type high pressure Pressure reducing valve for hot water |
| CN208687045U (en) * | 2018-08-02 | 2019-04-02 | 浙江豪能阀门制造有限公司 | A kind of spring piston type pressure reducing valve |
| CN209818764U (en) * | 2019-04-04 | 2019-12-20 | 北消安全设备(北京)有限公司 | Pilot valve for pressure reducing valve |
-
2019
- 2019-04-04 CN CN201910272602.5A patent/CN110017381A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3348573A (en) * | 1965-04-19 | 1967-10-24 | Grove Valve & Regulator Co | Fluid pressure regulator having a guided pressure responsive member |
| RU2406903C1 (en) * | 2009-09-17 | 2010-12-20 | Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт автоматики им. Н.Л. Духова" (ФГУП "ВНИИА") | Reducing valve |
| CN102678994A (en) * | 2012-05-17 | 2012-09-19 | 浙江维卫电子洁具有限公司 | Novel automatic decompression voltage and current stabilizer |
| CN203686285U (en) * | 2014-01-17 | 2014-07-02 | 宁波星箭航天机械有限公司 | Constant pressure reducing valve |
| CN203730774U (en) * | 2014-01-17 | 2014-07-23 | 宁波星箭航天机械有限公司 | High pressure gas pressure reducing valve |
| CN204878756U (en) * | 2015-08-20 | 2015-12-16 | 宁波市华益气动工程有限公司 | Seal structure of relief pressure valve |
| CN207514319U (en) * | 2017-11-10 | 2018-06-19 | 瑞立集团瑞安汽车零部件有限公司 | A kind of pressure reducing valve |
| CN108506544A (en) * | 2018-04-26 | 2018-09-07 | 中煤科工集团重庆研究院有限公司 | Pressure adjustable type high pressure Pressure reducing valve for hot water |
| CN208687045U (en) * | 2018-08-02 | 2019-04-02 | 浙江豪能阀门制造有限公司 | A kind of spring piston type pressure reducing valve |
| CN209818764U (en) * | 2019-04-04 | 2019-12-20 | 北消安全设备(北京)有限公司 | Pilot valve for pressure reducing valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075937A (en) * | 2019-12-19 | 2020-04-28 | 上海百图低温阀门有限公司 | Large-drift-diameter piston type pressure regulating valve |
| CN111075937B (en) * | 2019-12-19 | 2021-02-05 | 上海百图低温阀门有限公司 | Large-drift-diameter piston type pressure regulating valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205244488U (en) | Bulldoze six passageway valves of formula of opening and close | |
| US1932992A (en) | Plunger control device | |
| CN110017381A (en) | A kind of pilot valve for pressure reducing valve | |
| US2673706A (en) | Pilot controlled main valve with cushioning means | |
| US2869570A (en) | Air line automatic drain valve | |
| CN207333735U (en) | A kind of novel pneumatic regulating valve | |
| CN202834255U (en) | Flow control valve | |
| US4905744A (en) | Liquid-flow control apparatus | |
| US20130268091A1 (en) | Adjustment-free multi-stage prosthesis air cylinder and multi-stage air pressure valve thereof | |
| CN209034710U (en) | A kind of high-precision controllable lift suck back valve | |
| CN203857103U (en) | Pressure reducing valve | |
| CN209305933U (en) | A kind of filling valve arrangement | |
| CN209818764U (en) | Pilot valve for pressure reducing valve | |
| CN205136171U (en) | Hydraulic pressure pressure regulating device | |
| CN108361404A (en) | A kind of Remote Hydraulic control septum valve | |
| CN210950060U (en) | Ultrahigh pressure hydraulic safety valve | |
| EP0234102B1 (en) | Liquid-flow control apparatus | |
| US9920835B2 (en) | Piston device and pressure regulator using same | |
| CN203770800U (en) | Compact bidirectional flow control valve | |
| CN208919436U (en) | Throttling stop valve | |
| US2143229A (en) | Control device | |
| CN109931425B (en) | Leak protection emptying devices | |
| CN206846013U (en) | Mud special safety valve | |
| GB589458A (en) | Filters | |
| CN104373649A (en) | Pressure-limiting valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |