CN207701859U - A kind of extra small flow direct-operated regulator - Google Patents
A kind of extra small flow direct-operated regulator Download PDFInfo
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- CN207701859U CN207701859U CN201721606157.4U CN201721606157U CN207701859U CN 207701859 U CN207701859 U CN 207701859U CN 201721606157 U CN201721606157 U CN 201721606157U CN 207701859 U CN207701859 U CN 207701859U
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- guide sleeve
- circulation passage
- medium circulation
- extra small
- small flow
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Abstract
The utility model provides a kind of extra small flow direct-operated regulator, and for solving the problem of direct-operated regulator in the prior art, it is impossible to meet high temperature, high pressure, High Pressure Difference operating mode or even High Pressure Difference, extra small flow rate working conditions.It includes valve body, upper elastic pressed piece, upper valve core, lower elastic pressed piece, bottom spool, the upper valve core and the bottom spool at the cooperation of top to being equipped with valve seat, the upper surface of the valve seat is equipped with upper guide sleeve, the lower face of the valve seat is equipped with lower guide sleeve, the upper valve core kink is in the upper guide sleeve, and the bottom spool kink is in the lower guide sleeve；The lower guide sleeve is equipped with the first medium circulation passage being connected to the flow of media entrance of the valve body, the first medium circulation passage runs through the side wall of the lower guide sleeve, and the position of the first medium circulation passage and the variable-diameter structure position of the bottom spool correspond to；The upper valve core is equipped with and the second medium circulation passage of the flow of media outlet of the valve body.
Description
Technical field
The utility model is related to a kind of self-supporting regulation valves, more particularly to a kind of extra small flow direct-operated regulator.
Background technology
Direct-operated regulator relies primarily on the pressure for flowing through medium itself in valve as driven by energy valve automatic work, no
External power supply, air source are needed, commonly used in no electricity without the unattended place of gas, not only facilitates but also saved the energy, by adjusting silk
Bar (231) disposably sets parameter needed for operating mode, also saves a large amount of manpowers；Self-operated type pressure divides external and built-in pressure
Structure；External pressure needs drill before valve on (or after valve) pipeline pressure, and installation space is big needed for this kind of structure；It is built-in
Formula pressure is then directly by valve loaded on pressure at once on pipeline, delicate structure, and required installation space is small.
No matter external or built-in pressure, direct-operated regulator all can be used for the tune of flow, pressure, temperature etc.
Section, as shown in Figure 1, for existing built-in self-supporting regulation valve structure, the common big multipotency of Self-operated valve meet room temperature,
Normal pressure, low voltage difference, flow coefficient C V>1 regulatory function, but for high temperature, high pressure, High Pressure Difference operating mode or even High Pressure Difference, extra small
(according to the definition of valve, small flow valve refers to flow coefficient C V to flow<1 situation, extra small flow refer to flow coefficient C V<0.01)
Operating mode, common valve are just difficult to meet, and reason has the following：1, external pressure is executed using diaphragm type mostly
Device, the diaphragm material are that nitrile rubber presss from both sides nylon cloth, and it is low to bear pressure and temperature, even if increasing by one between actuator and pipeline
Drainer, bearing temperature and pressure are also limited, and since pressure-bearing temperature increases, its bearing capacity further declines, it is difficult to
Meet duty requirements；2, since the flow coefficient C V of small flow valve is small, but the leakage of common valve can only meet IV in normal pressure
~V grades, if in High Pressure Difference operating mode, leakage rate will reach the flow required by operating mode, cannot meet regulation performance completely.
3, because pressure difference is bigger, sizable impact force can be caused when medium flows through spool (5) up and down, valve when due to small flow
Core is required for being designed smaller, and impact resistance is poor, and bottom spool (5) can be usually destroyed in High Pressure Difference relative to valve seat
(6) concentricity eventually leads to spool valve seat (6) seal failure, and leakage increases, and does not fully meet the adjusting requirement of extra small flow
Invention content
In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide a kind of extra small flow self-operated types
Regulating valve, for solving direct-operated regulator in the prior art, it is impossible to meet high temperature, high pressure, High Pressure Difference operating modes, or even height
The problem of pressure difference, extra small flow rate working conditions.
In order to achieve the above objects and other related objects, the utility model provides a kind of extra small flow direct-operated regulator packet
It includes valve body, the upper valve core that the upper elastic pressed piece in the valve body is fixedly connected with the upper elastic pressed piece, be located at institute
State the bottom spool that the lower elastic pressed piece in valve body is fixedly connected with the lower elastic pressed piece, the upper valve core and it is described under
For spool to being equipped with valve seat at the cooperation of top, the upper valve core, the bottom spool and the valve seat abutting end are variable-diameter structure,
The upper surface of the valve seat is equipped with upper guide sleeve, and the lower face of the valve seat is equipped with lower guide sleeve, the upper valve core
Kink is in the upper guide sleeve, and the bottom spool kink is in the lower guide sleeve；
The lower guide sleeve is equipped with first medium circulation passage, and the first medium circulation passage runs through the lower guiding
The side wall of set, the position of the first medium circulation passage and the variable-diameter structure position of the bottom spool correspond to, and described first is situated between
Mass flow circulation passage is connected to the flow of media entrance of the valve body；
The upper valve core is equipped with second medium circulation passage, and the entrance of the second medium circulation passage is located on described
The varying diameter portion of spool, the outlet of the second medium circulation passage and the flow of media outlet of the valve body.
Preferably, it is equipped with damping regulating part in the flow of media entrance of the valve body and/or flow of media outlet.
Preferably, the damping regulating part is bushing.
Preferably, the damping regulating part is cylindrical structure, and the peripheral surface of the cylinder is equipped with spiral-shaped Jie
Mass flow circulation passage.
Preferably, the upper elastic pressed piece includes piston, upper spring and pallet, the upper spring be located at the piston and
Between the pallet, the piston is fixedly connected with the upper valve core, is equipped with above the pallet and is adjusted lead screw, the adjusting silk
The end face of bar and the cooperation of the end face of the pallet.
Preferably, it is equipped with thrust ball bearing at the adjusting lead screw and the pallet cooperation.
Preferably, the circumferential surface of the pallet is equipped with guide pin, and the valve body is equipped with guide groove, the guide pin and institute
State guide groove cooperation.
Preferably, the bottom spool lower end is multidiameter structure, and the lower elastic pressed piece includes lower spring, the lower bullet
Spring is sleeved on the multi-diameter shaft, and the lower end movement of the lower spring is limited.
As described above, a kind of extra small flow direct-operated regulator of the utility model, has the advantages that：
One, the circulating resistance for increasing medium by damping regulating part realizes extra small flow tune to reduce flow coefficient C V
Section；
Two, spool valve seat uses metal to metal seal, so 10.0MPa pressure differences can be withstood up to, bearing capacity is significantly
Increase, while service life is also improved.
Three, since pressure-containing member uses metallic piston formula, the high pressure of PN16.0MPa can be born, while sealing ring is using new
Type sealing material such as high temperature resistant perfluoroelastomer etc. can bear 300 DEG C of high temperature；
Four, since upper valve core and bottom spool have external force to allow it always to top always, in order to reduce external force to bottom spool radial direction
Active force, and also to reduce operation torque, therefore plane bearing is increased between lead screw and pallet；
Five, a guide pin is increased on pallet；Avoid the possibility that spring reverses under frictional force；
Six, built-in pressure keeps valve mechanism compacter, installation space smaller；
Seven, the motion parts of entire regulating valve are run in valve body, are wrapped up by shell, are not only suitable for indoor use, more
It is suitble to wild environment, it is only necessary to can be adjusted voltage stabilized range by adjusting lead screw.
Description of the drawings
Fig. 1 is shown as the schematic diagram of regulating valve in the prior art.
Fig. 2 is shown as the schematic diagram of the extra small flow direct-operated regulator of the utility model.
Structural schematic diagram when Fig. 3 is the formation spiral media circulation passage for damping regulating part 7.
Specific implementation mode
Illustrate that the embodiment of the utility model, those skilled in the art can be by these by particular specific embodiment below
Content disclosed by specification understands other advantages and effect of the utility model easily.
It please refers to Fig.1 to Fig.3.It should be clear that structure, ratio, size etc. depicted in this specification institute accompanying drawings, only to
Coordinate the revealed content of specification, so that those skilled in the art understands and reads, is not limited to the utility model
Enforceable qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size
Adjustment, in the case where not influencing the effect of the utility model can be generated and the purpose that can reach, should all still fall in the utility model
Revealed technology contents obtain in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", " left side ",
The term on " right side ", " centre " and " one " etc. is merely convenient to being illustrated for narration, rather than enforceable to limit the utility model
Range, relativeness are altered or modified, enforceable when being also considered as the utility model in the case where changing technology contents without essence
Scope.
Fig. 2, Fig. 3 are please referred to, a kind of extra small flow direct-operated regulator of the utility model offer includes valve body 1, is located at institute
It states upper valve core 3 that the upper elastic pressed piece 2 in valve body 1 is fixedly connected with the upper elastic pressed piece 2, be located in the valve body 1
The bottom spool 5 that is fixedly connected with the lower elastic pressed piece 4 of lower elastic pressed piece 4, the upper valve core 3 and the bottom spool 5
To being equipped with valve seat 6 at the cooperation of top, the upper valve core 3, the bottom spool 5 and 6 abutting end of the valve seat are variable-diameter structure,
The upper surface of the valve seat 6 is equipped with upper guide sleeve 61, and the lower face of the valve seat 6 is equipped with lower guide sleeve 62, described
3 kink of upper valve core is in the upper guide sleeve 61, and 5 kink of the bottom spool is in the lower guide sleeve 62；
The lower guide sleeve 62 is equipped with first medium circulation passage 621, and the first medium circulation passage 621 runs through institute
State the side wall of lower guide sleeve 62, the position of the first medium circulation passage 621 and the variable-diameter structure position pair of the bottom spool 5
It answers, the first medium circulation passage 621 is connected to the flow of media entrance 11 of the valve body 1；
The upper valve core 3 is equipped with second medium circulation passage 31, and the entrance of the second medium circulation passage 31 is located at
The varying diameter portion of the upper valve core 3, the outlet of the second medium circulation passage 31 and the flow of media outlet 12 of the valve body 1 connect
It is logical.
Please refer to Fig. 2, Fig. 3, a kind of embodiment, flow of media entrance 11 and/or the flow of media outlet of the valve body 1
Damping regulating part 7 is equipped in 12.The damping regulating part 7 is bushing.
Please refer to Fig. 2, Fig. 3, a kind of embodiment, the damping regulating part 7 is cylindrical structure, and the periphery of the cylinder
Face is equipped with spiral-shaped flow of media channel.
Fig. 2, Fig. 3, a kind of embodiment are please referred to, the upper elastic pressed piece 2 includes piston 21, upper spring 22 and pallet
23, the upper spring 22 between the piston 21 and the pallet 23, fix and connect by the piston 21 and the upper valve core 3
It connects, 21 peripheral surface of the piston is equipped with annular groove, and sealing ring 211 is equipped in the annular groove, and 23 top of the pallet is equipped with
Adjust lead screw 231, the end face cooperation of the end face for adjusting lead screw 231 and the pallet 23.The adjusting lead screw 231 and described
Thrust ball bearing 232 is equipped at 23 cooperation of pallet.The circumferential surface of the pallet 23 is equipped with guide pin 233, and the valve body 1 is equipped with
Guide groove, the guide pin 233 and guide groove cooperation.
Fig. 2, Fig. 3, a kind of embodiment are please referred to, 5 lower end of the bottom spool is multidiameter structure, the lower elastic compression
Part 4 includes lower spring, and on the multi-diameter shaft, the lower end movement of the lower spring is limited the lower spring pocket.
In conclusion the utility model is in order in extra small flow rate working conditions, medium rushing to bottom spool 5 when reducing High Pressure Difference
Break up it is bad, then as possible increase bottom spool 5 adjust diameter, while 1 inlet and outlet of valve body increase damping element, it is well known that
When damping bigger, the negotiability of valve is opposite to be weakened, i.e., discharge coefficient will reduce, while hole may be used in the damping element
Plate perforating type can also use screw-shaped flow paths, increase the circulating resistance of medium, to reduce flow coefficient C V, realize extra small
Flow-rate adjustment；
The utility model spool valve seat 6 uses metal to metal seal, it is preferable that spool, valve seat 6 all built-up welding cobalt-baseds close
The alloy materials such as gold, nickel-base alloy, so 10.0MPa pressure differences can be withstood up to, bearing capacity greatly increases, while service life
Also it is improved；Bottom spool 5 according to operating mode needs, can design be in line, equal percentage, parabola, even client specify
Control characteristic.
The utility model can bear the high pressure of PN16.0MPa since upper elastic pressed piece 2 uses 21 formula of metallic piston, excellent
Selection of land, sealing ring 211 can bear 300 DEG C of high temperature using sealing material such as high temperature resistant perfluoroelastomer etc.；
The utility model is since upper valve core 3 and bottom spool 5 have external force to allow it always to top always, in order to reduce external force under
The radial active force of spool 5, and also to reduce operation torque, therefore increases plane bearing between lead screw and pallet 23；
Pallet 23 rotates the utility model in the case where adjusting 231 active force of lead screw in order to prevent, while under the force effect that rubs
Spring torsion is driven again, therefore a guide pin 233 is increased on pallet 23；Avoid the possibility that spring reverses under frictional force.
The built-in pressure of the utility model, keeps valve mechanism compacter, installation space smaller；
The valve body 1 of the utility model is divide into upper part and lower part, and upper part is dust cover, and upper elastic compression component is hidden
Gear, is not only suitable for indoor use, is more suitable for wild environment, it is only necessary to can be adjusted voltage stabilized range by adjusting lead screw 231；
The function of self-operated type valve is realized：According to working condition requirement, lead screw 231 is adjusted by rotation and is adjusted to specified pressure,
After downstream pressure increases, upper valve core 3 moves up, and bottom spool 5 also moves up under the effect of lower spring, leads to bottom spool 5
Orifice size between valve seat 6 reduces, and simultaneously flows through the flow-reduction of valve seat 6, downstream pressure is made gradually to be increased, until
Return to specified pressure；When downstream pressure reduces, upper valve core 3 moves down, and the orifice size between bottom spool 5 and valve seat 6 increases,
The flow for simultaneously flowing through valve seat 6 increases, and downstream pressure is made gradually to be increased, until returning to specified pressure.
So the utility model effectively overcomes various shortcoming in the prior art and has high industrial utilization.
The above embodiments are only illustrative of the principle and efficacy of the utility model, new not for this practicality is limited
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications completed under refreshing and technological thought or change, should be covered by the claim of the utility model.
Claims (8)
1. a kind of extra small flow direct-operated regulator, including valve body (1), the upper elastic pressed piece in the valve body (1)
(2) upper valve core (3) being fixedly connected with the upper elastic pressed piece (2), the lower elastic pressed piece being located in the valve body (1)
(4) bottom spool (5) being fixedly connected with the lower elastic pressed piece (4), the upper valve core (3) and the bottom spool (5) are to top
Valve seat (6) is equipped at cooperation, the upper valve core (3), the bottom spool (5) and the valve seat (6) abutting end are variable-diameter structure,
It is characterized in that：
The upper surface of the valve seat (6) is equipped with upper guide sleeve (61), and the lower face of the valve seat (6) is equipped with lower guide sleeve (62),
Upper valve core (3) kink is in the upper guide sleeve (61), and bottom spool (5) kink is in the lower guide sleeve (62)；
The lower guide sleeve (62) is equipped with first medium circulation passage (621), and the first medium circulation passage (621) is run through
The side wall of the lower guide sleeve (62), the reducing knot of the position and the bottom spool (5) of the first medium circulation passage (621)
Structure position corresponds to, and the first medium circulation passage (621) is connected to the flow of media entrance (11) of the valve body (1)；
The upper valve core (3) is equipped with second medium circulation passage (31), the entrance position of the second medium circulation passage (31)
Varying diameter portion in the upper valve core (3), the flow of media of the outlet and the valve body (1) of the second medium circulation passage (31)
Export (12) connection.
2. a kind of extra small flow direct-operated regulator according to claim 1, it is characterised in that：Jie of the valve body (1)
Mass flow is passed through in mouth (11) and/or flow of media outlet (12) and is equipped with damping regulating part (7).
3. a kind of extra small flow direct-operated regulator according to claim 2, it is characterised in that：The damping regulating part
(7) it is bushing.
4. a kind of extra small flow direct-operated regulator according to claim 2, it is characterised in that：The damping regulating part
(7) it is cylindrical structure, and the peripheral surface of the cylinder is equipped with spiral-shaped flow of media channel.
5. a kind of extra small flow direct-operated regulator according to claim 1, it is characterised in that：The upper elastic pressed piece
(2) include piston (21), upper spring (22) and pallet (23), the upper spring (22) is located at the piston (21) and the pallet
(23) between, the piston (21) is fixedly connected with the upper valve core (3), is equipped with above the pallet (23) and adjusts lead screw
(231), the end face cooperation of the end face for adjusting lead screw (231) and the pallet (23).
6. a kind of extra small flow direct-operated regulator according to claim 5, it is characterised in that：The adjusting lead screw
(231) and at the pallet (23) cooperation it is equipped with thrust ball bearing (232).
7. a kind of extra small flow direct-operated regulator according to claim 5, it is characterised in that：The week of the pallet (23)
Face is equipped with guide pin (233), and the valve body (1) is equipped with guide groove, the guide pin (233) and guide groove cooperation.
8. a kind of extra small flow direct-operated regulator according to claim 1, it is characterised in that：Under the bottom spool (5)
End is multidiameter structure, and the lower elastic pressed piece (4) includes lower spring, and the lower spring pocket is described on the multi-diameter shaft
The lower end movement of lower spring is limited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721606157.4U CN207701859U (en) | 2017-11-27 | 2017-11-27 | A kind of extra small flow direct-operated regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721606157.4U CN207701859U (en) | 2017-11-27 | 2017-11-27 | A kind of extra small flow direct-operated regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207701859U true CN207701859U (en) | 2018-08-07 |
Family
ID=63023864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721606157.4U Active CN207701859U (en) | 2017-11-27 | 2017-11-27 | A kind of extra small flow direct-operated regulator |
Country Status (1)
| Country | Link |
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| CN (1) | CN207701859U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006283A (en) * | 2017-11-27 | 2018-05-08 | 重庆昂宇自控仪表有限公司 | Direct-operated regulator |
| CN110328068A (en) * | 2019-07-30 | 2019-10-15 | 华南农业大学 | A kind of self-adjustable adaptive stepless variable spray head in outflow port aperture section |
| CN110420370A (en) * | 2019-08-22 | 2019-11-08 | 河南科技大学第一附属医院 | A kind of Anesthesia machine |
-
2017
- 2017-11-27 CN CN201721606157.4U patent/CN207701859U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006283A (en) * | 2017-11-27 | 2018-05-08 | 重庆昂宇自控仪表有限公司 | Direct-operated regulator |
| CN110328068A (en) * | 2019-07-30 | 2019-10-15 | 华南农业大学 | A kind of self-adjustable adaptive stepless variable spray head in outflow port aperture section |
| CN110420370A (en) * | 2019-08-22 | 2019-11-08 | 河南科技大学第一附属医院 | A kind of Anesthesia machine |
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