CN105864495B - A kind of dynamic differential pressure control valve - Google Patents
A kind of dynamic differential pressure control valve Download PDFInfo
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- CN105864495B CN105864495B CN201610387207.8A CN201610387207A CN105864495B CN 105864495 B CN105864495 B CN 105864495B CN 201610387207 A CN201610387207 A CN 201610387207A CN 105864495 B CN105864495 B CN 105864495B
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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
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to a kind of dynamic differential pressure control valve.The present invention includes valve body, the valve body is provided with fluid intake, fluid issuing, the fluid intake communicates with controlled system low-pressure end, the valve seat for coordinating control valve aperture with valve element is provided with the valve inner runner, pressure-sensitive diaphragm is provided with the valve body, the pressure-sensitive diaphragm two sides are respectively water supply high pressure chest and backwater low pressure chamber, the water supply high pressure chest communicates with controlled system high-pressure side, the spool end is provided with the conduction hole for introducing fluid in the inner flow passage in backwater low pressure chamber, the spring assembly for pressure difference between automatic controlling water supplying high pressure chest and backwater low pressure chamber is additionally provided with the valve body.The present invention on spool end by directly opening up conduction hole, realize and fluid in the valve inner runner is incorporated into the purpose in backwater low pressure chamber, the differential pressure control valve avoids opens up flow guiding structure again on valve body so that valve body structure is simplified, and is easily installed.
Description
Technical field
The invention belongs to differential pressure control valve field, is specifically related to a kind of dynamic differential pressure control valve.
Background technology
Dynamic differential pressure control valve is a kind of can to automatically adjust the constant water of controlled system both ends pressure difference without external impetus
Force control valve door, it is mainly used in air-conditioning system and heating system tail end air conditioner case, Fresh air handling units, various plate type heat exchangers, sky
Adjust in chilled water system branch road pipe network.
The needs that existing domestic differential pressure control valve product has open up independent with controlled system low-pressure end phase outside valve body
Logical flow guiding structure, cause valve body structure complicated.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of dynamic differential pressure control valve.
In order to realize the purpose of the present invention, present invention employs following technical scheme：
A kind of dynamic differential pressure control valve, including valve body, the valve body are provided with fluid intake, fluid issuing, the fluid
Entrance is communicated with controlled system low-pressure end, and the valve seat for coordinating control valve aperture with valve element is provided with the valve inner runner,
It is provided with pressure-sensitive diaphragm in the valve body, the pressure-sensitive diaphragm two sides are respectively water supply high pressure chest and backwater low pressure chamber, the confession
Water high pressure chest communicates with controlled system high-pressure side, and the spool end is provided with fluid introducing backwater in the inner flow passage is low
The conduction hole of intracavitary is pressed, the bullet for pressure difference between automatic controlling water supplying high pressure chest and backwater low pressure chamber is additionally provided with the valve body
Spring component.
Further technical scheme：The dynamic differential pressure control valve includes upper valve rod, lower valve rod and on valve body
Bonnet, the spring assembly include the spring spool coaxially arranged with upper valve rod, spring fastening, spring and locking gland,
The spring fastening is located in the spring spool, and the spring spool first end is fixed with locking gland, and the spring is located at
For in the spring spool and both ends difference elastic reaction in the spring fastening with locking on gland, the upper valve rod passes through locking
Gland simultaneously coordinates with the spring fastening screw thread, and the lower valve rod is located at outside the spring spool and consolidated with the end of spring spool second
Determine and drive the valve element to act, the pressure-sensitive diaphragm is the mounting surface that ring plate shape and outer side edges are pressed on the bonnet and valve body
Upper, inner side edge is fixed with the spring spool circumferential seal, and the valve body installing port inner circumferential for installing the bonnet seals solid
Surely there is valve element cylinder, the valve element, which is located in valve element cylinder and forms sealing with valve element cylinder, to be slidably matched, the valve element, valve element
Cylinder, pressure-sensitive diaphragm, which enclose, forms the backwater low pressure chamber, and the bonnet is provided with the impulse communicated with controlled system high-pressure side
Hole.
Further technical scheme：The guide sleeve coaxially arranged with upper valve rod, the guide sleeve are fixed with the bonnet
Through locking gland and it is set on the spring fastening, the upper valve rod can be manually rotated realization by instrument and be axially moveable.
Further technical scheme：The barrel side face of the spring spool enters provided with some along spring spool length direction
Row set strip engraved structure, the spring spool its be arranged on the barrel at the second end be fixed with diaphragm pressing plate, with
And the diaphragm wedge fixed with diaphragm pressing plate, the diaphragm wedge are formed with diaphragm pressing plate and gripped on the inside of the pressure-sensitive diaphragm
The fixture on side.
Further technical scheme：The bonnet is provided with the shoulder for being used for supporting the guide sleeve, is gone back on the bonnet
The fixes sleeve coaxial with upper valve rod is threaded with, the guide sleeve is fixed on described by the fixes sleeve by rotating
The sealing disc being set on upper valve rod is provided with shoulder, between the fixes sleeve and guide sleeve, the drive mechanism includes set
The valve stem nut being located on the upper valve rod and the back-up ring fixed on the inside of valve stem nut and with valve stem nut, the gear
Circle is fixed with upper valve rod, and the valve stem nut is located in the fixes sleeve and coordinated with fixes sleeve screw thread, the valve rod spiral shell
Female rotation handwheel with outside bonnet is fixed, and the valve stem nut is driven by the rotation handwheel and along the fixes sleeve
Axial movement.
Further technical scheme：Its one end being located at outside bonnet of the upper valve rod uses the hexagonal knot for being easy to turn
Structure.
Further technical scheme：The valve inner runner is direct current runner, and the valve seat is diagonally disposed described straight
Flow in runner.
Further technical scheme：The contact surface of the valve element and the valve element cylinder is provided with the first O-ring seals, institute
State and the second O-ring seals are provided between valve element cylinder and the valve body installing port.
Further technical scheme：The 3rd O-ring seals are provided between the diaphragm wedge and the spring spool, it is described
Be provided with the 4th O-ring seals between sealing disc and the guide sleeve, provided with the between the sealing disc and the upper valve rod
Five O-ring seals, the 6th O-ring seals are provided between the valve seat and valve flowing channel, are provided between the guide sleeve and shoulder
Seal washer.
The beneficial effects of the present invention are：
(1) present invention is realized fluid in the valve inner runner by directly opening up conduction hole on spool end
The purpose being incorporated into backwater low pressure chamber, the differential pressure control valve avoids opens up flow guiding structure again on valve body so that valve body knot
Structure is simplified, and is easily installed.In the use of the present invention, when the pressure P1 of water supply high pressure chest rises, pressure-sensitive diaphragm band is moved
Spring sleeve and valve element move downward so that the aperture of valve reduces, and now flow resistance increases in valve inner runner so that backwater is low
Pressure cavity pressure P2 is also improved, so that it is guaranteed that pressure difference P1-P2's is constant；When the pressure P1 declines of water supply high pressure chest, pressure-sensitive
Diaphragm drives spring spool and valve element to move upwards so that and the aperture increase of valve, now flow resistance reduces in valve inner runner,
So that backwater low pressure cavity pressure P2 is also declined, so that it is guaranteed that pressure difference P1-P2's is constant.
(2) valve is that bar is combined by upper valve rod, lower valve rod and formed in the present invention, and spring assembly of the present invention can be with upper valve rod
Coordinate the pressure difference for adjusting controlled system both ends, the spring fastening coordinates with the upper valve rod screw thread can be used for adjusting bullet
Spring decrement, the size of amount of spring compression are the size for the pressure difference for determining controlled system both ends, it is assumed that the pressure-sensitive diaphragm
Area is A, then size F ≈ (P1-P2) × A of spring force.On the premise of amount of spring compression is set, by controlling upper valve
The axial movement of bar can dynamic regulation controlled system both ends pressure size, the upper valve rod be axially moved can band move
Spring bearing, spring spool, pressure-sensitive diaphragm, lower valve rod, valve element are acted and realize the regulation of valve opening size together.This hair
Bright upper valve rod, lower valve rod independently cause upper valve rod and the spring assembly during adjustment control pressure difference, not to interfere with lower valve rod
With the connection status of valve element, it is ensured that the stability of valve working.
(3) guide sleeve of the present invention can play a part of guiding to spring spool and spring fastening simultaneously, it is ensured that
The stability of spring in the course of work.
(4) spring spool of engraved structure of the present invention can effectively ensure the stability of spring, reduce integral valve
Door weight；The spring spool component, pressure-sensitive diaphragm can be completed outside valve body respectively, greatly reduce the difficulty of installation,
Be advantageous to the replacing of internal part and the maintenance of valve simultaneously.
(5) present invention drives the valve stem nut to rotate by rotating handwheel, due to valve stem nut and the fixes sleeve
Screw thread coordinates, and the valve stem nut moves relative to fixes sleeve along the axial direction of upper valve rod, the valve stem nut movement
While drive the back-up ring that is secured to and the upper valve rod fixed with back-up ring to move, final indirect belt movable valve plug action, realize
Closing to valve.
(6) hexagonal structure of upper valve boom end of the present invention is easy to can be manually rotated upper valve rod and spring by instrument
Bearing is coordinated, to adjust amount of spring compression and realize the setting of the magnitude of pressure differential at controlled system both ends.
(7) negotiability of straight-through runner of the present invention is stronger, and flow resistance coefficient is small, and it is small that valve produces noise；In addition originally
O sealing rings and seal washer are added in invention in corresponding component so that valve seal effect is more preferable, pressure difference regulation and control
It is more accurate.The present invention is more traditional, and differential pressure control valve is compared, and valve overall structure is attractive in appearance compact.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the structural representation that the present invention is arranged in controlled system pipeline.
Fig. 3 is spring spool structural representation in the present invention.
Fig. 4 is spring bearing structure illustration in the present invention.
Fig. 5 is valve core structure schematic diagram in the present invention.
The implication marked in figure is as follows：
The O-ring seals 3- valve body 4- measured hole plug 5- diaphragm pressing plates of 1- valve seats 2- the 6th
The O-ring seals 9- bonnet 10- guide sleeves of 6- pressure-sensitive diaphragm 7- diaphragm wedges 8- the 3rd
The O-ring seals of the O-ring seals 13- of 11- seal washers 12- the 4th sealing discs 14- the 5th
15- rotates handwheel 16- valve stem nut 17- back-up ring 18- fixes sleeves 19- locking glands
20- spring 21- spring spool 22- spring fastening 23- upper valve rods
24- the second O-ring seals 25- valve element cylinder 26- lower valve rod 27- valve elements
28- the first O-ring seals 29- hex nut 30- conduction hole 31- tracting pressuring holes
32- engraved structure A- water supply high pressure chest B- backwater low pressure chambers
Embodiment
Technical solution of the present invention is explained below in conjunction with the accompanying drawings：
The present invention includes valve body 3, and the valve body 3 is provided with fluid intake, fluid issuing, the fluid intake and controlled system
System low-pressure end is communicated, and the valve seat 1 for coordinating control valve aperture with valve element 27, the valve body 3 are provided with the inner flow passage of valve body 3
Interior to be provided with pressure-sensitive diaphragm 6, the two sides of pressure-sensitive diaphragm 6 are respectively water supply high pressure chest A and backwater low pressure chamber B, and the water supply is high
Pressure chamber A communicates with controlled system high-pressure side, and the end face of valve element 27 is provided with fluid introducing backwater in the inner flow passage is low
The conduction hole 30 in chamber B is pressed, is additionally provided with the valve body 3 for balancing pressure difference between water supply high pressure chest A and backwater low pressure chamber B
Spring assembly.By directly opening up conduction hole 30 on the end face of valve element 27, realizing will flow the present invention in the inner flow passage of valve body 3
Body is incorporated into the purpose in backwater low pressure chamber B, and the differential pressure control valve avoids opens up flow guiding structure again on valve body 3 so that valve
The structure of body 3 is simplified, and is easily installed.
Valve rod includes upper valve rod 23, lower valve rod 26 and the bonnet 9 on valve body 3, the groups of springs in the present invention
Part includes the spring spool 21 coaxially arranged with upper valve rod 23, spring fastening 22, spring 20 and locking gland 19, the bullet
Spring bearing 22 is located in the spring spool 21, and the first end of spring spool 21 is fixed with locking gland 19, the spring 20
In the spring spool 21 and both ends difference elastic reaction in the spring fastening 22 and is locked on gland 19, the upper valve
Bar 23 coordinates through locking gland 19 and with the screw thread of spring fastening 22, and the lower valve rod 26 is located at outside the spring spool 21
And fixed with the end of spring spool 21 second and drive the valve element 27 to act, the pressure-sensitive diaphragm 6 is ring plate shape and outer side edges pressure
Be located at the bonnet 9 with the mounting surface of valve body 3, inner side edge fixed with the circumferential seal of spring spool 21, for installing
The valve body installing port inner circumferential sealing for stating bonnet 9 is fixed with valve element cylinder 25, the valve element 27 be located at valve element cylinder 25 it is interior and with
Valve element cylinder 25 forms sealing and is slidably matched, and it is low that the valve element 27, valve element cylinder 25, pressure-sensitive diaphragm 6 enclose the composition backwater
Chamber B is pressed, the bonnet 9 is provided with the tracting pressuring hole 31 communicated with controlled system high-pressure side.In the present invention valve rod by upper valve rod 23, under
The combination of valve rod 26 is formed, and spring assembly of the present invention can coordinate the pressure difference for adjusting controlled system both ends with upper valve rod 23,
The spring fastening 22 and the screw thread of upper valve rod 23, which coordinate, can be used for adjusting the decrement of spring 20, the decrement of spring 20 it is big
The size of the small pressure difference for determining controlled system both ends, it is assumed that the area of the pressure-sensitive diaphragm 6 is A, then spring 20 acts on
Size F ≈ (P1-P2) × A of power.On the premise of the decrement of spring 20 is set, by the axial movement for controlling upper valve rod 23
Can dynamic regulation controlled system both ends pressure size, the upper valve rod 23 be axially moved can drive spring fastening 22,
Spring spool 21, pressure-sensitive diaphragm 6, lower valve rod 26, valve element 27 are acted and realize the regulation of valve opening size together, specifically
Regulation process is：When water supply high pressure chest A pressure P1 rises, pressure-sensitive diaphragm 6 drives spring spool 21 and valve element 27 to move downward,
So that the aperture of valve reduces, now flow resistance increases in valve inner runner so that pressure P2 is also carried in backwater low pressure chamber B
Height, so that it is guaranteed that pressure difference P1-P2's is constant；When water supply high pressure chest A pressure P1 declines, pressure-sensitive diaphragm 6 drives spring spool 21
And valve element 27 moves upwards so that the aperture increase of valve, now flow resistance reduces in valve inner runner so that backwater low pressure chamber
Pressure P2 is also declined in B, so that it is guaranteed that pressure difference P1-P2's is constant.Upper valve rod 23 of the present invention, lower valve rod 26 independently cause
Upper valve rod 23 during adjustment control pressure difference, does not interfere with the connection status of lower valve rod 26 and valve element 27, really with spring assembly
The stability of valve working is protected.
The guide sleeve 10 coaxially arranged with upper valve rod 23 is fixed with the bonnet 9, the guide sleeve 10 is pressed through locking
Lid 19 is simultaneously set on the spring fastening 22, and the upper valve rod 23 is axially moveable by drive mechanism driving realization.The present invention
The guide sleeve 10 can play a part of guiding to spring spool 21 and spring fastening 22 simultaneously, it is ensured that the course of work is hit by a bullet
The stability of spring 20.
The barrel side face of the spring spool 21 is provided with some strips being configured along the length direction of spring spool 21
Shape engraved structure 32, the spring spool 21 its be arranged on the barrel at the second end and be fixed with diaphragm pressing plate 5 and and diaphragm
The diaphragm wedge 7 that pressing plate 5 is fixed, the diaphragm wedge 7 form with diaphragm pressing plate 5 and grip the inner side edge of pressure-sensitive diaphragm 6
Fixture.The spring spool 21 of engraved structure 32 of the present invention can effectively ensure the stability of spring 20, reduce whole
Body valve weight；The spring assembly, pressure-sensitive diaphragm 6 can be completed outside valve body, greatly reduce the difficulty of installation, simultaneously
Be advantageous to the replacing of internal part and the maintenance of valve.
The bonnet 9, which is provided with, to be used to support the shoulder of the guide sleeve 10, be also threaded with the bonnet 9 with it is upper
The guide sleeve 10 is fixed on the shoulder by the coaxial fixes sleeve 18 of valve rod, the fixes sleeve 18 by rotating, institute
The sealing disc 13 for being provided with and being set on upper valve rod 23 between fixes sleeve 18 and guide sleeve 10 is stated, the drive mechanism includes set
The valve stem nut 16 being located on the upper valve rod 23 and the back-up ring fixed on the inside of valve stem nut 16 and with valve stem nut 16
17, the back-up ring 17 is fixed with upper valve rod 23, the valve stem nut 16 be located in the fixes sleeve 18 and with fixes sleeve 18
Screw thread coordinates, and the valve stem nut 16 is fixed with the rotation handwheel 15 outside bonnet 9, and the valve stem nut 16 is by described turn
Start to take turns 15 drivings and moved axially along the fixes sleeve 18.I.e. the present invention drives the valve stem nut by rotating handwheel 15
16 rotate, and because valve stem nut 16 and the screw thread of fixes sleeve 18 coordinate, the valve stem nut 16 can be relative to fixed cover
Cylinder 18 moves along the axial direction of upper valve rod 23, driven while the valve stem nut 16 moves be secured to back-up ring 17, with
And the upper valve rod 23 fixed with back-up ring 17 moves, final indirect belt movable valve plug 27 acts, and realizes controlling opening of valve.
Its one end being located at outside bonnet 9 of the upper valve rod 23 uses the hexagonal structure for being easy to turn.On of the present invention
The hexagonal structure of the end of valve rod 23 is easy to can be manually rotated upper valve rod 23 by instrument to be coordinated with spring fastening 22, to
The regulation decrement of spring 20 simultaneously realizes the setting of the magnitude of pressure differential at controlled system both ends.
The valve inner runner is direct current runner, and the valve seat 1 is diagonally disposed in the direct current runner.Institute of the present invention
State that the negotiability of straight-through runner is stronger, and flow resistance coefficient is small, it is small that valve produces noise.
The contact surface of the valve element 27 and the valve element cylinder 25 is provided with the first O-ring seals 28, the valve element cylinder
The second O-ring seals 24 are provided between 25 and the valve body installing port.Set between the diaphragm wedge 7 and the spring spool 21
There are the 3rd O-ring seals 8, the 4th O-ring seals 12, the sealing are provided between the sealing disc 13 and the guide sleeve 10
The 5th O-ring seals 14 are provided between disc 13 and the upper valve rod 23, the 6th O is provided between the valve seat 1 and valve flowing channel
Shape sealing ring 2, seal washer 11 is provided between the guide sleeve 10 and shoulder.It is close that O is added in the present invention in corresponding component
Seal and seal washer so that valve seal effect is more preferable, and pressure difference regulation is more accurate with controlling.The more traditional pressure difference control of the present invention
Valve processed is compared, and valve overall structure is attractive in appearance compact.
Claims (8)
- A kind of 1. dynamic differential pressure control valve, it is characterised in that：Including valve body (3), the valve body (3) is provided with fluid intake, stream Body exports, and the fluid intake communicates with controlled system low-pressure end, is provided with valve body (3) inner flow passage and matches somebody with somebody with valve element (27) The valve seat (1) of control valve aperture is closed, pressure-sensitive diaphragm is provided with the valve body (3), the pressure-sensitive diaphragm two sides are respectively to supply Water high pressure chest (A) and backwater low pressure chamber (B), the water supply high pressure chest (A) communicate with controlled system high-pressure side, the valve element (27) End face is provided with the conduction hole (30) for introducing fluid in the inner flow passage in backwater low pressure chamber (B), is gone back in the valve body (3) Provided with the spring assembly for pressure difference between automatic controlling water supplying high pressure chest (A) and backwater low pressure chamber (B)；Control valve includes valve rod, and valve rod includes upper valve rod (23), lower valve rod (26) and the bonnet on valve body (3) (9), the spring assembly include the spring spool (21) coaxially arranged with upper valve rod (23), spring fastening (22), spring (20), And locking gland (19), the spring fastening (22) are located in the spring spool (21), the spring spool (21) first End is fixed with locking gland (19), and the spring (20) is located in the spring spool (21) and elastic reaction is distinguished in institute in both ends State spring fastening (22) with locking gland (19), the upper valve rod (23) through locking gland (19) and with the spring fastening (22) screw thread coordinates, and the lower valve rod (26) is located at the spring spool (21) outside and fixed simultaneously with the end of spring spool (21) second The valve element (27) is driven to act, the pressure-sensitive diaphragm (6) is ring plate shape and outer side edges are pressed on the bonnet (9) and valve body (3) on mounting surface, inner side edge fixed with the spring spool (21) circumferential seal, for installing the valve body of the bonnet (9) The sealing of installing port inner circumferential is fixed with valve element cylinder (25), the valve element (27) be located at valve element cylinder (25) it is interior and with valve element cylinder (25) form sealing to be slidably matched, the valve element (27), valve element cylinder (25), pressure-sensitive diaphragm (6) enclose that to form the backwater low Chamber (B) is pressed, the bonnet (9) is provided with the tracting pressuring hole (31) communicated with controlled system high-pressure side.
- 2. dynamic differential pressure control valve as claimed in claim 1, it is characterised in that：It is fixed with the bonnet (9) and upper valve rod (23) coaxially arranged guide sleeve (10), the guide sleeve (10) is through locking gland (19) and is set in the spring fastening (22) on, the upper valve rod (23) can be manually rotated realization by instrument and be axially moveable.
- 3. dynamic differential pressure control valve as claimed in claim 2, it is characterised in that：On the barrel side face of the spring spool (21) Provided with some strip engraved structures (32) being configured along spring spool (21) length direction, the spring spool (21) its It is arranged on the barrel at the second end and is fixed with diaphragm pressing plate (5) and the diaphragm wedge (7) fixed with diaphragm pressing plate (5), institute State diaphragm wedge (7) and the fixture for gripping the pressure-sensitive diaphragm (6) inner side edge is formed with diaphragm pressing plate (5).
- 4. dynamic differential pressure control valve as claimed in claim 3, it is characterised in that：The bonnet (9), which is provided with, to be used to support institute The shoulder of guide sleeve (10) is stated, the fixes sleeve coaxial with upper valve rod (18) is also threaded with the bonnet (9), it is described solid Determine sleeve (18) guide sleeve (10) is fixed on the shoulder by rotating, the fixes sleeve (18) and guide sleeve (10) the sealing disc (13) being set on upper valve rod (23) is provided between, drive mechanism includes being set in the upper valve rod (23) On valve stem nut (16) and the back-up ring (17) fixed on the inside of the valve stem nut (16) and with valve stem nut (16), it is described Back-up ring (17) is fixed with upper valve rod (23), and the valve stem nut (16) is located in the fixes sleeve (18) and and fixes sleeve (18) screw thread coordinates, the valve stem nut (16) and fixed, the valve stem nut positioned at the outside rotation handwheel (15) of bonnet (9) (16) driven by the rotation handwheel (15) and moved axially along the fixes sleeve (18).
- 5. dynamic differential pressure control valve as claimed in claim 1, it is characterised in that：The upper valve rod (23) its be located at bonnet (9) Outside one end is using the hexagonal structure for being easy to turn.
- 6. dynamic differential pressure control valve as claimed in claim 1, it is characterised in that：The valve inner runner is direct current runner, The valve seat (1) is diagonally disposed in the direct current runner.
- 7. dynamic differential pressure control valve as claimed in claim 1, it is characterised in that：The valve element (27) and the valve element cylinder (25) contact surface is provided with the first O-ring seals (28), is provided between the valve element cylinder (25) and the valve body installing port Second O-ring seals (24).
- 8. dynamic differential pressure control valve as claimed in claim 4, it is characterised in that：The diaphragm wedge (7) and the spring housing The 3rd O-ring seals (8) are provided between cylinder (21), the 4th O is provided between the sealing disc (13) and the guide sleeve (10) Shape sealing ring (12), the 5th O-ring seals (14), the valve are provided between the sealing disc (13) and the upper valve rod (23) Seat (1) is provided with the 6th O-ring seals (2) between valve flowing channel, and the guide sleeve (10) is provided with seal washer between shoulder (11)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610387207.8A CN105864495B (en) | 2016-05-30 | 2016-05-30 | A kind of dynamic differential pressure control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610387207.8A CN105864495B (en) | 2016-05-30 | 2016-05-30 | A kind of dynamic differential pressure control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105864495A CN105864495A (en) | 2016-08-17 |
| CN105864495B true CN105864495B (en) | 2018-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610387207.8A Active CN105864495B (en) | 2016-05-30 | 2016-05-30 | A kind of dynamic differential pressure control valve |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425318A (en) * | 2019-08-28 | 2019-11-08 | 浙江工业大学 | A kind of Pressure reducing valve for hot water |
| CN112120160B (en) * | 2020-09-28 | 2022-03-11 | 三亚汉莎航空食品有限公司 | Rice ball forming machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201615269U (en) * | 2009-12-24 | 2010-10-27 | 中业阀门集团有限公司 | Reverse-flow internal spray hole depressurizing and pressure-stabilizing valve |
| CN201827476U (en) * | 2010-09-19 | 2011-05-11 | 卓旦春 | Dynamic pressure differential balance valve |
| CN202091585U (en) * | 2011-06-23 | 2011-12-28 | 欧文托普阀门***(北京)有限公司 | Differential pressure regulating valve for heating and air-conditioning system |
| CN205036932U (en) * | 2015-10-15 | 2016-02-17 | 北京海林绿建节能技术有限公司 | Differential pressure balance valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003108234A (en) * | 2001-09-28 | 2003-04-11 | Yoshitake Inc | Pressure reducing valve |
-
2016
- 2016-05-30 CN CN201610387207.8A patent/CN105864495B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201615269U (en) * | 2009-12-24 | 2010-10-27 | 中业阀门集团有限公司 | Reverse-flow internal spray hole depressurizing and pressure-stabilizing valve |
| CN201827476U (en) * | 2010-09-19 | 2011-05-11 | 卓旦春 | Dynamic pressure differential balance valve |
| CN202091585U (en) * | 2011-06-23 | 2011-12-28 | 欧文托普阀门***(北京)有限公司 | Differential pressure regulating valve for heating and air-conditioning system |
| CN205036932U (en) * | 2015-10-15 | 2016-02-17 | 北京海林绿建节能技术有限公司 | Differential pressure balance valve |
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| Publication number | Publication date |
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| CN105864495A (en) | 2016-08-17 |
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