CN106763810A - The sensitive water servomechanism of one kind control - Google Patents
The sensitive water servomechanism of one kind control Download PDFInfo
- Publication number
- CN106763810A CN106763810A CN201611234725.2A CN201611234725A CN106763810A CN 106763810 A CN106763810 A CN 106763810A CN 201611234725 A CN201611234725 A CN 201611234725A CN 106763810 A CN106763810 A CN 106763810A
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- CN
- China
- Prior art keywords
- valve
- limit part
- stepped hole
- valve element
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The present invention relates to one kind sensitive water servomechanism of control, including valve body, valve rod is arranged in the valve pocket of valve body, and valve body is provided with positioned at the inlet opening of side wall and the apopore positioned at bottom；Servomotor drive connection valve rod, the lower end part of valve rod is provided with the valve element for closing apopore；It is characterized in that being provided with up big and down small stepped hole in the middle part of valve element, valve rod is located in stepped hole and has gap and the inwall of stepped hole between, gap connection valve pocket；Be sequentially provided with from top to bottom on valve rod upper limit part, for sealed step hole hypomere seal and lower limit part；Valve element is located between upper limit part and lower limit part, and the distance between upper limit part and lower limit part are more than the height of valve element；Epimere bore of the external diameter of seal less than stepped hole；Elastic component is additionally provided with valve pocket, the upper and lower ends of elastic component are contradicted on the roof and valve element of valve pocket respectively.
Description
Technical field
It is especially a kind of to control sensitive water servomechanism the present invention relates to water servomechanism.
Background technology
Water servo control mechanism is commonly provided with existing water-carrying capacity system, especially gas heater, water servomechanism energy
Enough bases go out hot water temperature, and the situation of change of hydraulic pressure, air pressure and inflow temperature automatically adjusts flow of inlet water, really realizes water, gas
Dual regulation, it is ensured that the precise constant of leaving water temperature.
But mostly to there is noise in existing water servomechanism big in the course of the work, and runoff investigation bar poor linearity etc. is asked
Topic, and most of water servo structures do not possess and completely close water function, occur weeping after shutdown；Or in order to avoid
Weeping, the tension that valve is closed, it is excessive to open torsion after causing to start shooting again, or the phenomenon such as cannot open, and influence is normal
Use function.
The content of the invention
The present situation that the technical problems to be solved by the invention are directed to prior art provides a kind of switch sensitive and sealing
The good sensitive water servomechanism of control.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：The sensitive water servomechanism of the control, including
Valve body, valve rod is arranged in the valve pocket of valve body, and the valve body is provided with positioned at the inlet opening of side wall and the apopore positioned at bottom；
Valve rod described in servomotor drive connection, the lower end part of the valve rod is provided with the valve element for closing the apopore；
It is characterized in that：
Be provided with up big and down small stepped hole in the middle part of the valve element, the valve rod be located in the stepped hole and with it is described
There is gap, the gap connects the valve pocket between the inwall of stepped hole；
Be sequentially provided with from top to bottom on the valve rod upper limit part, the seal of hypomere for sealing the stepped hole and
Lower limit part；The valve element is located between the upper limit part and lower limit part, and the upper limit part and lower limit part it
Between distance more than the valve element height；Epimere bore of the external diameter of the seal less than the stepped hole；
Be additionally provided with elastic component in the valve pocket, the upper and lower ends of the elastic component contradict respectively the valve pocket roof and
On the valve element.
It is preferred that the valve element includes pedestal and the sealing ring being connected on the pedestal, the stepped hole is arranged on the base
On seat.
Preferably, the pedestal can include the seat of honour being mutually butted and lower seat；The sealing ring is embedded at the seat of honour
And lower seat between, and convex flange under having on the bottom surface of the sealing ring；Accordingly, the inwall of the valve pocket is provided with convex
Rank, the flange is contradicted closes the apopore in the convex rank.The structure not only facilitates the assembling of valve element, and reduces
The accuracy of manufacture of sealing ring, while also improve the sealing property between sealing ring and delivery port.
As the further improvement of above-mentioned each scheme, turbine can be provided with the inlet opening.
Preferably, fair water sleeves can also be arranged with the apopore, along the hole of fair water sleeves described in water (flow) direction
Footpath is gradually reduced.Fair water sleeves in turbine and apopore in the program coordinate can form current turbulence structure, so as to keep away
Exempt from turbulent phenomenon and thus caused noise caused by hydraulic pressure release suddenly after current enter cavity from inlet opening.
Compared with prior art, water servomechanism provided by the present invention, can thoroughly close apopore, it is to avoid existing
The phenomenon of the current water clock after valve is closed in technology；And due to being two-stage valve opening, valve opening is not by influence of hydraulic pressure, it is entirely avoided water
The phenomenon that stream cannot be again turned on after closing, and runoff investigation good linearity, noise are small.
Brief description of the drawings
Fig. 1 is the longitudinal sectional view of the embodiment of the present invention；
Fig. 2 is longitudinal sectional plain-view drawing of embodiment of the present invention valve element standard-sized sheet；
Fig. 3 is longitudinal sectional plain-view drawing of embodiment of the present invention valve element half-open position；
Fig. 4 is longitudinal sectional plain-view drawing of embodiment of the present invention valve element closed mode；
Fig. 5 is valve element and the partial sectional view of valve rod cooperation in the embodiment of the present invention；
Fig. 6 is the sectional view schematic diagram of valve element in the embodiment of the present invention
Fig. 7 is the schematic perspective view of turbine in the embodiment of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in Figures 1 to 7, the sensitive water servomechanism of the control includes：
Valve body 1, is the housing of whole switch, and its side wall is provided with inlet opening 11, and its bottom is apopore 12；Apopore
Fair water sleeves 7 are arranged with 12, are gradually reduced along the aperture of water (flow) direction fair water sleeves 7, fair water sleeves 7 is interior in the present embodiment
Hole is taper.On the wall of valve pocket 13 convex rank 14 is provided with the top of fair water sleeves 7.Flow type turbine 6 is provided with inlet opening 11.
Valve rod 2, is arranged in valve pocket 13, servomotor (not shown) is connected, by the driving of servomotor in valve
Moved up and down in chamber 13.It is interval with upper limit part 21, seal 23 and lower limit part 22 on valve rod 2 successively from top to bottom.On
The height of the distance between locating part 21 and lower limit part 22 more than valve element 3.
Valve element 3, between upper limit part 21 and lower limit part 22, including pedestal and sealing ring 33, wherein pedestal includes
Coordinate the seat of honour 32 and lower seat 34 being mutually butted by step；Sealing ring 33 is embedded between the seat of honour 32 and lower seat 34, and close
Flange 35 convex under having on the bottom surface of seal 33.Flange 35 is contradicted closes apopore 12 in convex rank 14；Flange 35 with it is convex
Gap between rank 14 is one-level throttle orifice.
The seat of honour 32 is provided with the groove 36 for housing elastic component 5.
Be provided with up big and down small stepped hole 31 in the middle part of pedestal, valve rod 2 be located in stepped hole 31 and with stepped hole 31
There is gap 4, the connection of gap 4 valve pocket 13 between inwall；Gap 4 forms the two-step throttle hole of the water servomechanism.
The external diameter of seal 23 is less than the epimere bore of stepped hole 31, and can coordinate two grades of sections of closing with the hypomere of stepped hole
Discharge orifice.
Elastic component 5, the present embodiment is spring, is set on valve rod 2, and the upper and lower ends of elastic component 5 are contradicted in valve pocket respectively
On 13 roof and the seat of honour 32.
As depicted in figs. 1 and 2, in flow full-gear, lower seat is contradicted the water servomechanism under the pressure of elastic component
On lower limit part, current enter valve pocket via inlet opening, while into one-level throttle orifice and two-step throttle hole, then via water outlet
Flow out in hole.
When closing water outlet, servomotor drives valve rod to move down, and valve element is moved down with valve rod under the action of the spring, one-level section
Head piece is gradually reduced, and water flow is gradually reduced, after the flange on sealing ring is contradicted onto convex rank, one-level throttling bore closure, such as
Shown in Fig. 3；Now, sealing ring is contained in the upper sector hole of stepped hole, and without sealing function, two-step throttle hole remains in open shape
State, but water flow very little.
With valve rod continue move down, now, due to valve element contradict in convex rank, valve element is no longer moved down with valve rod, until
Upper limit part is contradicted onto the seat of honour, and sealing ring 3 enters the hypomere of stepped hole, as shown in figure 4, two-step throttle hole is closed, now, stream
Amount is completely closed.
When needing to open the water servomechanism, servomotor drives and moved on valve rod, and band dynamic seal ring first enters stepped hole
Two-step throttle hole is opened in epimere, the water servomechanism pressure release；Because two-step throttle hole flow is smaller, less power is releasable
The back pressure of valve element, therefore, even if valve element pass is very tight, external water stream pressure is larger, it is also possible to easily open very much two-step throttle
Hole, efficiently solves because valve opening pulling force is not enough caused by intake pressure is excessive, can not draw away the phenomenon of valve；With valve rod continue to
Upper movement, valve element is followed upwards in the presence of lower limit part, and one-level restriction is opened, and flow gradually increases.
In the prior art, under intake pressure high, current can cause the laminar flow of water rheology of stabilization by the restriction being mutated
Into turbulence state, under turbulence state, the water (flow) direction in cavity has no rule, mutually clashes into, each point in same cross section
Hydraulic pressure pressure size differs, and causes valve rod unbalance stress, forms resonance and noise, influences the rating curve of servo control mechanism.
In the present embodiment, the overall current flow-disturbing knot of fair water sleeves composition in the turbine and apopore in inlet opening is arranged on
Structure.Combing is carried out to water inlet current by turbine structure, current is entered valve pocket in vortex shape, prevent the formation of turbulent flow, while
Reduce impact of the water inlet current to valve element, it is ensured that the valve element stress balance in valve pocket；And fair water sleeves make apopore form one
Diminishing loudspeaker necking, flow rate of water flow difference and pressure difference in increase apopore and cavity, that is, reduce in valve pocket and water inlet
Differential water pressures between hole, form hydraulic pressure chamber high in valve pocket, it is to avoid hydraulic pressure is unexpected after current enter cavity from inlet opening
Turbulent phenomenon caused by release.
Claims (5)
1. a kind of sensitive water servomechanism of control, including valve body (1), valve rod (2) is arranged in the valve pocket (13) of valve body (1),
The valve body (1) is provided with positioned at the inlet opening (11) of side wall and the apopore (12) positioned at bottom；Servomotor drive connection
The valve rod (2), the lower end part of the valve rod (2) is provided with the valve element (3) for closing the apopore (12)；
It is characterized in that：
Up big and down small stepped hole (31) is provided with the middle part of the valve element (3), the valve rod (2) is located in the stepped hole (31)
Interior and have gap (4) and the inwall of the stepped hole (31) between, the gap (4) connects the valve pocket (13)；
Upper limit part (21), hypomere for sealing the stepped hole (31) are sequentially provided with the valve rod (2) from top to bottom
Seal (23) and lower limit part (22)；The valve element (3) between the upper limit part (21) and lower limit part (22), and
And the distance between the upper limit part (21) and lower limit part (22) are more than the height of the valve element (3)；The seal
(23) epimere bore of the external diameter less than the stepped hole (31)；
Elastic component (5) is additionally provided with the valve pocket (13), the upper and lower ends of the elastic component (5) are contradicted in the valve pocket respectively
(13) on roof and the valve element (2).
2. the sensitive water servomechanism of control according to claim 1, it is characterised in that the valve element (3) including pedestal and
The sealing ring (33) on the pedestal is connected to, the stepped hole (31) is arranged on the pedestal.
3. it is according to claim 2 to control sensitive water servomechanism, it is characterised in that the pedestal includes being mutually butted
The seat of honour (32) and lower seat (34)；The sealing ring (33) is embedded between the seat of honour (32) and lower seat (34), and described
Flange (35) convex under having on the bottom surface of sealing ring (33)；Accordingly, the inwall of the valve pocket (13) is provided with convex rank (14),
The flange (35) contradicts closes the apopore (12) in the convex rank (14).
4. the sensitive water servomechanism of control according to claims 1 to 3 any claim, it is characterised in that it is described enter
Turbine (6) is provided with water hole (11).
5. it is according to claim 4 to control sensitive water servomechanism, it is characterised in that to be arranged in the apopore (12)
There are fair water sleeves (7), be gradually reduced along the aperture of fair water sleeves described in water (flow) direction (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611234725.2A CN106763810B (en) | 2016-12-28 | 2016-12-28 | Water volume server with sensitive control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611234725.2A CN106763810B (en) | 2016-12-28 | 2016-12-28 | Water volume server with sensitive control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106763810A true CN106763810A (en) | 2017-05-31 |
| CN106763810B CN106763810B (en) | 2022-11-18 |
Family
ID=58924752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611234725.2A Active CN106763810B (en) | 2016-12-28 | 2016-12-28 | Water volume server with sensitive control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106763810B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011070420A (en) * | 2009-09-25 | 2011-04-07 | Keihin Corp | Pressure reducing valve |
| US20140326909A1 (en) * | 2013-05-01 | 2014-11-06 | Mks Instruments, Inc. | Pressure-balanced control valves |
| CN203948648U (en) * | 2014-06-19 | 2014-11-19 | 山东裕鸿阀门股份有限公司 | Duplex channel pressure medium sealing valve unit |
| CN204239768U (en) * | 2014-11-27 | 2015-04-01 | 高特自控阀门有限公司 | Self-contained pressure regulator |
| CN206290720U (en) * | 2016-12-28 | 2017-06-30 | 宁波方太厨具有限公司 | The sensitive water servomechanism of one kind control |
-
2016
- 2016-12-28 CN CN201611234725.2A patent/CN106763810B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011070420A (en) * | 2009-09-25 | 2011-04-07 | Keihin Corp | Pressure reducing valve |
| US20140326909A1 (en) * | 2013-05-01 | 2014-11-06 | Mks Instruments, Inc. | Pressure-balanced control valves |
| CN203948648U (en) * | 2014-06-19 | 2014-11-19 | 山东裕鸿阀门股份有限公司 | Duplex channel pressure medium sealing valve unit |
| CN204239768U (en) * | 2014-11-27 | 2015-04-01 | 高特自控阀门有限公司 | Self-contained pressure regulator |
| CN206290720U (en) * | 2016-12-28 | 2017-06-30 | 宁波方太厨具有限公司 | The sensitive water servomechanism of one kind control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106763810B (en) | 2022-11-18 |
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