CN106352128A - Automatic valve core component and differential pressure-independent type flow control valve - Google Patents
Automatic valve core component and differential pressure-independent type flow control valve Download PDFInfo
- Publication number
- CN106352128A CN106352128A CN201610941420.9A CN201610941420A CN106352128A CN 106352128 A CN106352128 A CN 106352128A CN 201610941420 A CN201610941420 A CN 201610941420A CN 106352128 A CN106352128 A CN 106352128A
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- adjusting spool
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- 239000008358 core component Substances 0.000 title abstract 4
- 230000006835 compression Effects 0.000 claims description 28
- 238000007906 compression Methods 0.000 claims description 28
- 230000009467 reduction Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 230000006870 function Effects 0.000 abstract description 18
- 230000001105 regulatory effect Effects 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 17
- 230000000694 effects Effects 0.000 description 16
- 238000001914 filtration Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
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
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
-
- 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
- F16K1/48—Attaching valve members to screw-spindles
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
- F16K3/267—Combination of a sliding valve and a lift valve
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
-
- 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
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fluid-Driven Valves (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention relates to an automatic valve core component and a differential pressure-independent type flow control valve and belongs to the technical field of balance valves. The automatic valve core component comprises a pressure-sensitive diaphragm, a compressing disc, a regulating valve core and a valve core sleeve, wherein the valve core sleeve is of a cylinder multi-boss sleeve structure, a water guiding hole is formed in the upper end face of the valve core sleeve, the regulating valve core is of a cylinder sleeve structure provided with steps, a thin-wall cutting edge is formed in the upper end face of the regulating valve core, a groove is formed in the lower end of the regulating valve core, the groove is matched with an intermediate hole boss of the pressure-sensitive diaphragm, and the groove runs through a center hole of the pressure-sensitive diaphragm to the compressing disc below the pressure-sensitive diaphragm; and the valve core sleeve sheathes on the outer wall of the regulating valve core. The automatic valve core component provided by the invention has the advantages of high regulation precision, small size, no influence on flow and guarantee of independent implementation of regulating and closing functions.
Description
Technical field
The present invention relates to a kind of automatic core assembly and pressure reduction independent type flow control valve, belong to balanced valve technical field.
Background technology
In fluid media (medium) pipeline control system, when the pressure oscillation in pipe-line system, for keeping rate of discharge stable, lead to
Flow control valve often can be used, in known product, patent No. zl201110033130.1 discloses a kind of operting differential pressure model
Enclose fixing flow control valve, the size of its operting differential pressure to be determined by fixing nonadjustable spring；Patent zl
201020285505 disclose a kind of by screw rod adjust spring change operting differential pressure variable differential pressure flow control valve.So
And these product generally existing problems with:
(1) after above-described flow control valve valve pilot port at valve outlet end, and be a pressure guide hole, before and after product press
During difference fluctuation, downstream pressure transmission is inconspicuous, and response speed is slow, affects degree of regulation.
(2) above-described flow rate control valve structure is complicated, manufactures processing difficulties, and fluid flows through resistance during valve body
Larger；Thus increased the resistance of whole tubing.
(3) adopt low in and high out above-described flow control valve more, or high in and low out structure, the volume of product is relatively
Greatly, structure is not compact.
(4) above-described flow control valve does not possess filtering function, needs to configure single defecator when using.
(5) above-described flow control valve manual modulation valve core only possesses regulatory function, does not possess turn-off function.
Based on this, make the application.
Content of the invention
For the drawbacks described above existing for existing control valve, the application provides a kind of degree of regulation height, small volume, no first
Impact flow, automatic core assembly easy to assembly.
For achieving the above object, the technical scheme that the application takes is as follows:
Automatically core assembly, including pressure-sensitive diaphragm, compression plate, adjusting spool and valve core housing, described valve core housing is that how convex cylinder is
Platform tube-in-tube structure, its upper surface is provided with water-guiding hole, and this water-guiding hole leads directly to the stepped hole of its lower surface, this stepped hole and valve element
Setting rectangular channel in set middle part communicates it is ensured that upstream medium passes through；Adjusting spool is cylindrical sleeves structure with the level, its upper surface
Setting thin-walled cutting edge, to adjust flow, setting step circular hole is run through in center, and arranges through hole in this step circular hole, to pass
Pass pressure, lower end arranges groove, and this groove is coordinated with the interstitial hole boss of pressure-sensitive diaphragm, and extends through the centre of pressure-sensitive diaphragm
The compression plate to pressure-sensitive diaphragm for the hole, compression plate lower end closed；Valve core housing is sleeved on adjusting spool outer wall.
Further, as preferred:
Cannelure is set, and valve core housing is sleeved in adjusting spool by this cannelure, to realize adjusting in the middle part of described adjusting spool
Section valve element is connected with the slide-and-guide of valve core housing.
It is provided with spring between described valve core housing and adjusting spool, play the effect of balance.
On described compression plate upper surface, pressure transmission groove is set, plays the effect of pressure transmission.
It is provided with drainage screen above described rectangular channel, plays the effect filtered and purify, it is to avoid impurity enters, extend valve
Core retainer plate and the service life of adjusting spool.
Meanwhile, present invention also provides one kind using above-mentioned automatic core assembly and is realized adjusting and closed two kinds of independent work(
Can pressure reduction independent type flow control valve, including automatic core assembly, bottom flange, valve body, linear flap, valve rod, bonnet, and
Gripper shoe, described automatic core assembly includes pressure-sensitive diaphragm, compression plate, adjusting spool and valve core housing, and valve core housing is that cylinder is many
Boss tube-in-tube structure, its upper surface is provided with water-guiding hole, and this water-guiding hole leads directly to the stepped hole of its lower surface, this stepped hole and valve
In the middle part of core retainer plate, setting rectangular channel communicates it is ensured that upstream medium passes through；Adjusting spool is cylindrical sleeves structure with the level, its upper end
Face arranges thin-walled cutting edge, and thin-walled cutting edge extends downwardly and runs through adjusting spool setting step circular hole, and sets in this step circular hole
Put through hole, pressure-sensitive diaphragm is run through to compression plate, compression plate lower end closed in lower end, and is compressed by bottom flange；Valve element set upper side and valve
Body connects, and remaining part is then sleeved on adjusting spool outer wall；Bonnet, upper end surface is provided with valve rod, and middle part is connected with electronic
Executor, to carry ovable valve stem to move up and down, bonnet, bottom is installed with valve body cooperation；Valve rod lower end is provided with gripper shoe, this
Fagging is located above adjusting spool, and linear flap is installed with gripper shoe cooperation.
Further, as preferred:
It is provided with spring one between described valve core housing and adjusting spool, during media flow, balanced valve core retainer plate and regulation
Valve element.
Described valve core housing outer wall setting cannelure, valve core housing is passed through this cannelure and is installed with valve body cooperation.
There is cylinder step described valve rod lower end, and equipped with gripper shoe on cylinder step, match with gripper shoe is linear valve
Lobe.
Described linear flap is frustum cone structure, and it is to threaded between valve rod, not only can achieve linear regulation but also energy
Realize closing function.
It is provided with cylinder step, spring two is set on valve rod by this cylinder step, in valve rod in the middle part of described valve rod
The cylinder step of portion's setting plays the effect of holddown spring two, it is furthermore preferred that described spring two is located in stop sleeve,
Support set cylinder has a through hole to match with valve rod, so that stop sleeve is sleeved on valve rod, its lower end is pressed on pad, and upper end is locking
Screw, lock screw is also cylindrical sleeves with the level, and locking nut lower end outside is provided with and bonnet, upper end female thread phase
The screw thread of cooperation, lower end endoporus is cylindrical with stop sleeve to match, equipped with o type between lock screw and stop sleeve upper surface
Circle, seals, the effect of being wrenched is acted, for hexahedron, in lock screw upper end, centre also has a through hole to match with valve rod, locking
Pad, stop sleeve are pressed on the step surface of bonnet, interstitial hole screw.
First purpose of the present invention is to change automatic core assembly and valve core structure, and pressure guide hole is arranged on regulating valve
After core, the pressure loss is little, and adopts four pressure guide holes, and before and after product during pressure-difference fluctuation, downstream pressure transmission is fast, response speed
Degree is slow, adjusts control accuracy high.
Second object of the present invention is that pressure-sensitive diaphragm is connected as a single entity with adjusting spool, and adjusting spool adopts thin-walled cutting edge to tie
Structure, compact conformation, small volume, noise during throttling is little, and vibration and collision are little, and regulation is sensitive to make whole product with compact structure, body
Amass and reduce, but negotiability is unaffected.
Third object of the present invention is passed through to increase drainage screen on valve element stock, plays filtering function, filters tiny miscellaneous
Matter, protection valve element automatically adjusts assembly.Reduce abrasion, so that the service life of product is strengthened,
Fourth object of the present invention is passed through using the linear adjustment structure of flow and motor switch valve element combinative structure, both can be complete
Linear adjustment effect can complete closing function again, adjust and can independently realize with closing function, be independent of each other, and compact conformation.
Therefore, the having the beneficial effect that of the application:
1) the automatic core assembly of this product and valve core structure, after pressure guide hole is arranged on adjusting spool, the pressure loss is little,
And adopt four pressure guide holes, compared with the adjustment structure of other flow control valves, before and after product during pressure-difference fluctuation, downstream pressure passes
Pass fast, response speed is slow, adjust control accuracy high.
2) pressure-sensitive diaphragm of this product and adjusting spool are connected as a single entity, and adjusting spool adopts thin-walled cutting edge structure, and structure is tight
Gather, small volume, noise during throttling is little, and vibration and collision are little, adjust sensitive make whole product with compact structure, volume-diminished, but
It is that negotiability is unaffected.
3) this product is passed through to increase drainage screen on valve element stock, plays filtering function, filters fine impurities, protects valve element
Automatically adjust assembly.Reduce abrasion, so that the service life of product is strengthened.
4) the automatic core assembly structure of this product becomes simple, and volume becomes less；Manufacture, assemble simple, low cost；
Install easily.
5) this product is passed through, using flow adjusting structure and motor switch valve element combinative structure, both to have completed linear regulation
Effect can complete closing function again, adjust and can independently realize with closing function, be independent of each other, and compact conformation.
Brief description
Fig. 1 is the overall structure diagram of the application；
Fig. 2 is the structural representation of core assembly automatically in the application；
Fig. 3 is the integrative-structure figure of pressure-sensitive diaphragm and adjusting spool in the application；
Fig. 4 is the top view of Fig. 3；
Fig. 5 is the top view of valve core housing in the application；
Fig. 6 is d-d directional profile figure in Fig. 5；
Fig. 7 is the combination assumption diagram of the linear adjustment structure of flow and motor switch valve element in the application；
Fig. 8 is the application medium internal flow directional diagram.
Wherein label: 1. drainage screen；2. pressure-sensitive diaphragm；3. bottom flange；4. compression plate；5. nut；6. packing ring；7.
Adjusting spool；7a. thin-walled cutting edge；7b. step circular hole；7c. through hole；7d. groove；8. o type sealing ring one；9. spring
One；10. valve core housing；10a. cannelure；10b. water-guiding hole；11. blanking covers；12. rectangular seals；13. valve bodies；14. o
Type sealing ring two；15. o type sealing rings three；16. linear flaps；17. valve rods；18. o type sealing rings four；19. locking screws
Female；20. stop sleevees；21. springs two；22. mouth sealing rings；23. pads；24. o type sealing rings five；25. bonnet,s；
26. gripper shoes.
Specific embodiment
A kind of the present embodiment pressure reduction independent type flow control valve, in conjunction with Fig. 1, including automatic core assembly, bottom flange 3, valve
Body 13, linear flap 16, valve rod 17, bonnet, 25 and gripper shoe 26, in conjunction with Fig. 2, Fig. 3 and Fig. 4, automatic core assembly includes feeling
Pressuring film plate 2, compression plate 4, adjusting spool 7 and valve core housing 10, in conjunction with Fig. 5 and Fig. 6, valve core housing 10 is that cylinder many boss sleeve is tied
Structure, its upper surface is provided with water-guiding hole 10b, and this water-guiding hole 10b leads directly to the stepped hole of its lower surface, this stepped hole and valve core housing
10 middle part setting rectangular channels communicate it is ensured that upstream medium passes through；Adjusting spool 7 is cylindrical sleeves structure with the level, its upper end
Face arranges thin-walled cutting edge 7a, and thin-walled cutting edge 7a extends downwardly and runs through adjusting spool 7 setting step circular hole 7b, and in this step circles
Through hole 7c is set in the 7b of hole, and pressure-sensitive diaphragm 2 is run through to compression plate 4 in adjusting spool 7 lower end, compression plate 4 lower end closed, and by lower valve
Lid 3 compression；Valve core housing 10 upper end is connected with valve body 13, and remaining part is then sleeved on adjusting spool 7 outer wall；Bonnet, 25 upper end
Valve rod 17 is installed at face, middle part is connected with YE, to carry ovable valve stem 17 to move up and down, bonnet, 25 bottom and valve body
13 cooperations are installed；Valve rod 17 lower end is provided with gripper shoe 26, and this gripper shoe 26 is located above adjusting spool 7, linear flap 16 with
Gripper shoe 26 cooperation is installed.
Wherein, it is provided with spring 1 between valve core housing 10 and adjusting spool 7, during media flow, balanced valve core retainer plate
10 with adjusting spool 7；Valve core housing 10 outer wall arranges cannelure 10a, and valve core housing 10 passes through this cannelure 10a and valve body 13 cooperation peace
Dress；In conjunction with Fig. 7, there is cylinder step valve rod 17 lower end, and equipped with gripper shoe 26 on cylinder step, match with gripper shoe 26 is line
Property flap 16, linear flap 16 is frustum cone structure, and it is to threaded between valve rod 17, not only can achieve that linear regulation again can reality
Existing closing function；It is provided with cylinder step, spring 2 21 is set on valve rod 17 by this cylinder step, valve rod in the middle part of valve rod 17
The cylinder step of 17 middle part settings plays the effect of holddown spring 2 21, and spring 2 21 is located in stop sleeve 20, stop sleeve
20 have a through hole to match with valve rod 17, so that stop sleeve 20 is sleeved on valve rod 17, its lower end is pressed on pad 23, and upper end is
Lock screw 19, lock screw 19 is also cylindrical sleeves with the level, and locking nut 19 lower end outside is provided with and bonnet, 25
The screw thread that upper end female thread matches, lower end endoporus is cylindrical with stop sleeve 20 to match, lock screw 19 and stop sleeve 20
Equipped with o type circle 4 18 between upper surface, seal, the effect of being wrenched is acted, for hexahedron, in lock screw 19 upper end, and centre also has
One through hole is matched with valve rod 17, and pad 23, stop sleeve 20 are pressed on the step of bonnet, 25 interstitial hole by lock screw 19
On face.
(1) automatic core assembly structure:
Adjusting spool 7 is cylindrical sleeves with the level, and excircle of sleeve and valve core housing 10 interstitial hole have coordinated slide-and-guide to act on,
There is a female cone thin-walled cutting edge 7a sleeve upper surface, acts the effect adjusting flow, there are a step circular hole 7b, step circular hole 7b in centre
The middle effect also having a through hole 7c, playing transmission pressure, there is a cannelure at the cylindrical middle part of adjusting spool 7, equipped with o in the middle of cannelure
Type sealing ring 1 is sealed with the cooperation of valve core housing 10 interstitial hole, and adjusting spool 7 lower end is a boss, and boss root has one
Groove 7d is coordinated with the boss of pressure-sensitive diaphragm 2 interstitial hole, and pressure-sensitive diaphragm 2 is disk-shaped structure, and there are a through hole and adjusting spool 7 in centre
The matching of lower end external cylindrical surface, match with pressure-sensitive diaphragm 2 lower surface is compression plate 4, and compression plate 4 is cylindrical sleeves knot
Structure, bottom is closed, and also there are a through hole and adjusting spool 7 lower end external cylindrical surface cooperation in centre, and centre, equipped with packing ring 6 and nut 5, is used
Cross nut 6 pressure-sensitive diaphragm 2 is linked together with compression plate 4, adjusting spool 7, at compression plate 4 upper end-face edge, have four rectangles
Groove, for transmitting pressure, pressure-sensitive diaphragm 2 is cylindrical to have a boss to coordinate with valve body 13 interstitial hole, the cylindrical seam in valve core housing 10 lower end,
Sealed by bottom flange 3 screw thread compression, the top of such pressure-sensitive diaphragm 2 is just divided into p2 as shown in Figure 8 and p3 two
Pressure area.Valve core housing 10 is cylinder many boss tube-in-tube structure, and there is cannelure 10a upper end on cylindrical side, equipped with o type circle 2 14
Match with valve body 13 and close sealing dress use, end face has four interior cylinder water-guiding hole 10b, the inner conical surface of straight-through valve core housing 10 lower end
Stepped hole, equipped with adjusting spool 7 in the middle of valve core housing 10, there is a cannelure at the cylindrical middle part of adjusting spool 7, equipped with o in the middle of cannelure
Type sealing ring 8, seals, and is also equipped with spring 1 in valve core housing 10 centre between cylinder table terrace and adjusting spool 7,
Play balanced action, the middle part of valve core housing 10 is provided with cylinder table rank hole in rectangular channel and valve core housing 10 centre and communicates, and makes upstream medium
Can pass through, four reinforcing rib structures of quad type of rectangular channel, positioning boss is provided with relative reinforcement, under positioning boss
Portion is a column structure, and top is a frustum cone structure, and the rectangular opening of drainage screen 1 and positioning round table have coordinated fixation, prevented
Drainage screen 1 play under a stream of water.
(2) pressure-sensitive diaphragm 2 and adjusting spool 7 integrative-structure.
Adjusting spool 7 is cylindrical sleeves with the level, and excircle of sleeve and valve core housing 10 interstitial hole have coordinated slide-and-guide
Effect, there is a female cone thin-walled cutting edge 7a sleeve upper surface, acts the effect adjusting flow, there are a step circular hole 7b, step in centre
Also have a through hole 7c in the middle of circular hole 7b, play the effect of transmission pressure, there is a cannelure at the cylindrical middle part of adjusting spool 7, in cannelure
Between seal equipped with the cooperation of o type sealing ring 1 and valve core housing 10 interstitial hole, adjusting spool 7 lower end is a boss, boss root
There is the boss cooperation of a groove 7d and pressure-sensitive diaphragm 2 interstitial hole in portion, and pressure-sensitive diaphragm 2 is disk-shaped structure, and there are a through hole and tune in centre
Save matching of valve element 7 lower end external cylindrical surface, match with pressure-sensitive diaphragm 2 lower surface is compression plate 4, compression plate 4 is cylinder
Tube-in-tube structure, bottom is closed, and also there are a through hole and adjusting spool 7 lower end external cylindrical surface cooperation in centre, and centre is equipped with packing ring 6 and spiral shell
Female 5, pressure-sensitive diaphragm 2 is linked together by used nut 6 with compression plate 4, adjusting spool 7, has 4 at compression plate 4 upper end-face edge
Bar rectangular channel, for transmitting pressure, pressure-sensitive diaphragm 2 is cylindrical to have a boss cylindrical only with valve body 13 interstitial hole, valve core housing 10 lower end
Mouth cooperation, is sealed by valve gap 3 screw thread compression, and the top of such pressure-sensitive diaphragm 2 is just divided into p2 and two pressure areas of p3.
(3) valve core housing:
Valve core housing 10 is cylinder many boss tube-in-tube structure, and there is cannelure 10a upper end on cylindrical side, equipped with o type circle 2 14 with
Valve body 13 matches and closes sealing dress use, and end face has 4 interior cylinder water-guiding hole 10b, the inner conical surface platform of straight-through valve core housing 10 lower end
Rank hole, equipped with adjusting spool 7 in the middle of valve core housing, there is a cannelure at the cylindrical middle part of adjusting spool 7, close equipped with o type in the middle of cannelure
Seal 1, seals, and is also equipped with spring 1 in valve core housing 10 centre between cylinder table terrace and adjusting spool 7, rises
Balanced action, the middle part of valve core housing 10 is provided with cylinder table rank hole in rectangular channel and valve core housing centre and communicates, and so that upstream medium is led to
Cross, four reinforcing rib structures of quad type of rectangular channel, positioning boss is provided with relative reinforcement, positioning boss bottom is
One column structure, top is a frustum cone structure, and the rectangular opening of drainage screen 1 and positioning round table have coordinated fixation, prevents from filtering
Net 1 play under a stream of water.
(4) combinative structure of the linear adjustment structure of flow and motor switch valve element
Bonnet, 25 is a multi-step cylindrical structure, and upper end has six fang platform ranks to tighten for valve gap, outside middle bench
There is screw thread to be used for connecting YE, outside lower step, also have screw thread and valve body 13, mouth sealing ring 22 coordinates, play fastening close
Envelope acts on, and has a through hole in the middle of bonnet, 25 upper end, and equipped with valve rod 17, there are cylinder step, cylinder in valve rod 17 lower end for centre
External screw thread is had on face, equipped with gripper shoe 27 on step, gripper shoe 27 lower plane has a groove equipped with o type sealing ring 3 15, with
What fagging 27 matched is linear flap 16.
Linear flap 16 is a frustum cone structure, centre have an endoporus be provided with nut match with the screw thread of valve rod 27 lower end by
Gripper shoe 27 and o type sealing ring 5 24 are pressed on valve rod, both can realize linear regulation and enable closing function, in valve rod
There is a cylinder step in portion, and the inside sequentially passes through valve rod 17 equipped with o type sealing ring 5 24, pad 23, spring 2 21, in the middle part of valve rod 17
Cylinder step plays the effect of holddown spring 2 21, has stop sleeve 20 outside spring 2 21, and stop sleeve 20 lower end is pressed in pad
On 23, a through hole in the middle of stop sleeve 20, is also had to match with valve rod 17, stop sleeve 20 upper end is lock screw 19, locking screw
Silk 19 is also cylindrical sleeves with the level, and lower end outside is provided with screw thread and is matched with the female thread of bonnet, 25 upper end, lower end
Endoporus is cylindrical with stop sleeve 20 to match, and equipped with o type circle 4 18 between lock screw 19 and stop sleeve 20 upper surface, rises close
Envelope acts on, and the effect of being wrenched is acted, for hexahedron, in lock screw 19 upper end, and centre also has a through hole to match with valve rod 17, lock screw
19 pad 23, stop sleeve 17 are pressed on the step surface of bonnet, 25 interstitial hole.
The operation principle of the present embodiment is as follows:
In conjunction with Fig. 8, flow automatic balance function, when medium enters this product from left end screwed hole, through valve core housing 10, is adjusted
Valve element 7, linear flap 16, reach the right-hand member outlet of valve, and fluid, in the presence of automatic core assembly, creates three sections of differences
Pressure area, from import to valve core housing between 10 region pressure highest, referred to as p1, flow through through valve core housing 10 and adjusting spool
7 reach pressure-sensitive diaphragm 2 top and valve core housing 10 is declined with the areal pressure of adjusting spool 7, referred to as p2；Flow through valve core housing 10 and line
Property flap 16 arrive valve right-hand member outlet areal pressure minimum, referred to as p3；4 water-guiding holes on valve core housing 10 for this pressure
10b reaches the region between pressure-sensitive diaphragm 2 bottom and bottom flange 3；React on pressure-sensitive diaphragm 2 with the elastic force one of spring 1
Bottom, when system pressure raises, p2 increases, and the power acting on pressure-sensitive diaphragm 2 top is greater than p3 with spring 1 in pressure sensitive film
What piece 2 lower section was formed makes a concerted effort, and pressure-sensitive diaphragm 2 drives adjusting spool 7 to move upwards, adjusting spool 7 and valve core housing 10 side 4
Distance between window reduces, and therefore water outlet open area reduces, and that is, the negotiability of valve-discharge coefficient kv value reduces, according to stream
Amount formula, flow can remain unchanged, and realizes new poised state；Vice versa, thus it is automatic to have reached flow
The purpose adjusting.
Flow linear regulating function and closing function: when needing to adjust flow, control panel gives YE one
During individual equal proportion Regulate signal, the push rod of YE pushes down on valve rod 17, and valve rod 17 overcomes the pretension of spring 2 21 to make
Gripper shoe 26 and linear flap 16 is firmly driven to move downward, the difference according to signal can make linear valve lobe 16 rest on difference
Position, realize the linear regulation of flow together with valve core housing 10 upper end hole, when need turn off when, control panel gives electronic holding
One shutdown signal of row device, the push rod of YE pushes down on valve rod 17 and drives gripper shoe 26, o type sealing ring 4 18 and line
Property flap 16 is made downwards o type sealing ring 4 18 be fitted completely with valve core housing 10 upper surface and completes closing function, otherwise ought electronic hold
Row device obtain an opening signal when, the push rod of YE moves upwards, valve rod 17 under the active force of spring 2 21 to
Upper motion is thus drive gripper shoe 26 and linear flap 16 to complete opening function upwards.
The present embodiment is applied to fluid media (medium) pipeline control system, not only adjusts during pressure oscillation in pipe-line system
High precision, keeps rate of discharge stable, and small volume, does not affect flow, and guarantees to adjust and can independently realize with closing function
The advantages of.
Above content be preferred implementation with reference to the invention provided technical scheme is made detailed further
Describe in detail bright it is impossible to assert that the invention is embodied as being confined to these explanations above-mentioned, the affiliated technology for the invention
For the those of ordinary skill in field, without departing from the concept of the premise of the invention, some simple deductions can also be made
Or replace, all should be considered as belonging to the protection domain of the invention.
Claims (10)
1. automatic core assembly it is characterised in that: include pressure-sensitive diaphragm, compression plate, adjusting spool and valve core housing, described valve element
Cover for cylinder many boss tube-in-tube structure, its upper surface is provided with water-guiding hole, this water-guiding hole leads directly to the stepped hole of its lower surface, should
Stepped hole is communicated it is ensured that upstream medium passes through with setting rectangular channel in the middle part of valve core housing；Adjusting spool is cylindrical sleeves with the level
Structure, its upper surface arranges thin-walled cutting edge, and to adjust flow, setting step circular hole is run through in center, and in this step circular hole
Setting through hole, to transmit pressure, lower end arranges groove, and this groove is coordinated with the interstitial hole boss of pressure-sensitive diaphragm, and extends through
The compression plate to pressure-sensitive diaphragm for the interstitial hole of pressure-sensitive diaphragm, compression plate lower end closed；Valve core housing is sleeved on outside adjusting spool
On wall.
2. as claimed in claim 1 automatically core assembly it is characterised in that: in the middle part of described adjusting spool, cannelure is set,
Valve core housing is sleeved in adjusting spool by this cannelure.
3. as claimed in claim 1 automatically core assembly it is characterised in that: arrange between described valve core housing and adjusting spool
There is spring.
4. as claimed in claim 1 automatically core assembly it is characterised in that: pressure transmission is arranged on described compression plate upper surface
Groove.
5. as claimed in claim 1 automatically core assembly it is characterised in that: be provided with drainage screen above described rectangular channel.
6. a kind of using as claimed in claim 1 automatically core assembly pressure reduction independent type flow control valve it is characterised in that: bag
Include automatic core assembly, bottom flange, valve body, linear flap, valve rod, bonnet, and gripper shoe, described automatic core assembly bag
Include pressure-sensitive diaphragm, compression plate, adjusting spool and valve core housing, valve core housing is cylinder many boss tube-in-tube structure, its upper surface is arranged
Have water-guiding hole, this water-guiding hole leads directly to the stepped hole of its lower surface, this stepped hole with the middle part of valve core housing setting rectangular channel communicate it is ensured that
Upstream medium passes through；Adjusting spool is cylindrical sleeves structure with the level, and its upper surface arranges thin-walled cutting edge, and thin-walled cutting edge is downward
Extend through adjusting spool setting step circular hole, and through hole is set in this step circular hole, pressure-sensitive diaphragm is run through to pressure in lower end
Tight disk, compression plate lower end closed, and compressed by bottom flange；Valve element set upper side is connected with valve body, and remaining part is then sleeved on regulation
On valve element outer wall；Bonnet, upper end surface is provided with valve rod, and middle part is connected with YE, to carry ovable valve stem to move up and down,
Bonnet, bottom is installed with valve body cooperation；Valve rod lower end is provided with gripper shoe, and this gripper shoe is located above adjusting spool, linear valve
Lobe is installed with gripper shoe cooperation.
7. as claimed in claim 6 a kind of pressure reduction independent type flow control valve it is characterised in that: described valve core housing and regulation
It is provided with spring one between valve element.
8. as claimed in claim 6 a kind of pressure reduction independent type flow control valve it is characterised in that: there is circle described valve rod lower end
Pylon rank, equipped with gripper shoe on cylinder step, match with gripper shoe is linear flap.
9. as claimed in claim 6 a kind of pressure reduction independent type flow control valve it is characterised in that: described linear flap be circle
Platform structure, it is to threaded between valve rod.
10. as claimed in claim 6 a kind of pressure reduction independent type flow control valve it is characterised in that: set in the middle part of described valve rod
It is equipped with cylinder step, spring two is set on valve rod by this cylinder step.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610941420.9A CN106352128B (en) | 2016-10-25 | 2016-10-25 | A kind of automatic core assembly and pressure difference independent type flow control valve |
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| CN201610941420.9A CN106352128B (en) | 2016-10-25 | 2016-10-25 | A kind of automatic core assembly and pressure difference independent type flow control valve |
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| CN106352128A true CN106352128A (en) | 2017-01-25 |
| CN106352128B CN106352128B (en) | 2018-09-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112460279A (en) * | 2020-11-25 | 2021-03-09 | 苏州德兰能源科技股份有限公司 | Self-feedback flow steady and constant regulating valve |
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|---|---|
| CN106352128B (en) | 2018-09-28 |
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Denomination of invention: Automatic valve core assembly and pressure difference independent flow control valve Effective date of registration: 20211220 Granted publication date: 20180928 Pledgee: Diankou sub branch of Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang deai Intelligent Control Technology Co.,Ltd. Registration number: Y2021980015397 |
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