CN108194674A - A kind of self-operated flow regulator - Google Patents
A kind of self-operated flow regulator Download PDFInfo
- Publication number
- CN108194674A CN108194674A CN201711341051.0A CN201711341051A CN108194674A CN 108194674 A CN108194674 A CN 108194674A CN 201711341051 A CN201711341051 A CN 201711341051A CN 108194674 A CN108194674 A CN 108194674A
- Authority
- CN
- China
- Prior art keywords
- spool
- cavity body
- valve core
- port
- end cover
- 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.)
- Granted
Links
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
- 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
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Flow Control (AREA)
Abstract
The invention discloses a kind of self-operated flow regulator, including valve body, hand control valve core and automatic adjustment spool;Valve inner is in the cavity body of " people " font, the right output port of cavity body flows into end for fluid, the left port of cavity body is fluid outflow end, and hand control valve core is arranged at the centre position of cavity body with automatic adjustment spool and hand control valve core is protruded outward from the upper port of cavity body;The cylinder adjustment portion outside wall surface of hand control valve core is bonded with the upper port internal face of cavity body, and the annular stop slot part inside the lower end angular cutouts of cylinder adjustment portion and the upper port of cavity body abuts against cooperation;The adjusting rod of hand control valve core is stretched out from the upper port of cavity body and the upper end cover at the upper port with cavity body is nested;Spool nest card is automatically adjusted to close in the upper port of cavity body and positioned at the lower section of hand control valve core.The present invention improves the degree of regulation of fluid flow so that the heating power distribution in heat distribution pipe network is more balanced.
Description
Technical field
The invention belongs to heat distribution pipe network valve technology field more particularly to a kind of self-operated flow regulators.
Background technology
At present, the valve mechanism of existing heat distribution pipe network is simple, and function is single, and it is most of only can only be by manually adjusting
The opening degree of valve is saved, so that the adjusting about valve opening degree needs experienced operating personnel that can just be protected to operate
The stability of valve working is demonstrate,proved, and manual operation certainly will cause working efficiency low, and expend a large amount of artificial capital;In addition, by
It is single in the function of valve, so that the heating power distribution in heat distribution pipe network is uneven, so that the heating power in heat distribution pipe network is just
The phenomenon that remote cold near-thermal can be generated.
Invention content
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of self-operated flow regulator.
A kind of self-operated flow regulator, including valve body, hand control valve core and automatic adjustment spool;
The valve inner is in the cavity body of " people " font, and the right output port of the cavity body flows into end for fluid, described
The left port of cavity body is fluid outflow end, and the hand control valve core and automatic adjustment spool are arranged at the both ends of cavity body
Centre position and hand control valve core is protruded outward from the upper port of cavity body;
The hand control valve core includes a cylinder adjustment portion with angular cutouts and an operation cylinder adjustment portion
It rotates and along the outwardly extending adjusting rod of upper surface axis of cylinder adjustment portion;
The cylinder adjustment portion outside wall surface is bonded with the upper port internal face of cavity body, and the lower end of the cylinder adjustment portion is inclined
Annular stop slot part inside the upper port of angular cut and cavity body abuts against cooperation;The adjusting rod is from the upper end of cavity body
Mouth is stretched out and is nested with the upper end cover at the upper port of cavity body;
Here, rotation adjusting rod makes the lower end angular cutouts of cylinder adjustment portion be limited along the annular inside the upper port of cavity body
The opening degree that position slot rotates and then control the lower end angular cutouts of cylinder adjustment portion to flow into end with the fluid of cavity body right end reaches
To the manual effect for adjusting fluid flow;
The automatic adjustment spool nest card is closed in the upper port of cavity body and positioned at the lower section of hand control valve core, institute
It states automatic adjustment spool and includes upper valve core, middle spool, bottom spool and bottom end cover, the upper valve core, middle spool, bottom spool and lower end
Lid is the cylindrical structure with locking edge, and upper valve core, middle spool, bottom spool and bottom end cover are nested successively;On described
The cylinder side wall of spool offers multiple windows, and the cylinder side wall of middle spool also offers multiple windows, under the bottom end cover
End face is provided with recirculation hole;The lower spring of spool in support is provided in the bottom spool, support is provided in the middle spool
The upper spring of upper valve core.
Preferably, the lower external buckle edge nesting of the upper valve core is fastened in the upper internal buckle edge of middle spool, the middle spool
Lower external buckle edge nesting is fastened in the upper internal buckle edge of bottom spool, the lower port outside wall surface of the bottom spool and the internal face of bottom end cover
Fitting is fixed, and the upper external buckle edge support clamping close of the bottom end cover is below the annular spacing groove inside the upper port positioned at cavity body
Annular convex platform on.
Preferably, the cylinder side wall of the upper valve core is opened up there are four window, and the cylinder side wall of the middle spool offers
Two windows.
Preferably, the end that the adjusting rod stretches out upper end cover is conveniently operated adjusting rod equipped with turntable by turntable.
Preferably, the adjusting rod stretching rectangular port in end of upper end cover or D-shaped port, and matched turntable
It is provided with corresponding rectangular opening or D-shaped hole.
Preferably, the outer end face of the upper end cover is provided with dial for one week along adjusting rod, on the adjusting rod or turntable
It is corresponding to be furnished with debug point, when the debug point on adjusting rod or turntable, which is turned to, to be aligned with a certain scale on dial, represent
The opening degree that the lower end angular cutouts of the cylinder adjustment portion of this graduation indication flow into end with the fluid of cavity body right end, i.e., this moment
Spend the fluid flow of instruction.
Self-operated flow regulator provided by the invention, the course of work are as follows:
When the hot water of heat distribution pipe network is flowed into from the right output port of cavity body, can initial heat be adjusted with rotation manual spool
Water through-current capacity, and the dial on upper end cover can be used for observing the opening degree of manual spool.Upper and lower spring is equal during original state
There is certain preload amount, controlled by automatic spool bottom end cover, and original state can be set according to actual conditions.When in pipe network
Pressure change when, upper and lower spring can automatically adjust the length of itself according to the size of pressure change, be directly changed runner
Size, so as to change the size of hot water flow, to achieve the purpose that adjust hot water flow balance.Here, pressure change hour is only
It works there are one spring, i.e., is under pressure on automatic spool and first upper spring is compressed, change the runner size of side, after
And ensure the flow equilibrium of setting.When pressure change is big, after having compressed spring, lower spring is also compressed, i.e., upper and lower bullet
Spring works simultaneously, and then changes the runner size of side again, so as to change the size of hot water flow, this runner reduce from
And reduce hot water flow, achieve the purpose that adjust hot water flow balance.
Self-operated flow regulator provided by the invention, hand control valve core control the switch of valve and the entirety of runner
Opening degree, and be provided on upper end cover dial have the function of convenient for observation, adjust, measurement valve is opened and is spent, herein
The setting of dial can also allow user to set initial value, and then determine the opening degree of valve according to working site.In short, hand
Dynamic control spool has the effects that cut-off, adjusting, throttling, non-return, shunting or overflow release.It automatically adjusts spool and uses two-pass
Spring plays the role of balance system, and two springs are sectional-regulated to the position progress of spool, improve balance adjustment fluid
The precision of flow.It specifically, can be according to fluid flow, the variation of pressure and then by two-pass spring come the big of constant flow rate
It is small, so as to ensure the constant of fluid flow, realize thermodynamic equilibrium.
Self-operated flow regulator provided by the invention, the degree of regulation of fluid flow greatly increase, and realize thermal pipe
The thermodynamic equilibrium of net saves cost of labor debugging cost.
Description of the drawings
Fig. 1 is the structure diagram of self-operated flow regulator of the present invention;
Fig. 2 is the sectional view of self-operated flow regulator of the present invention;
Fig. 3 is the structure chart that spool is automatically adjusted in self-operated flow regulator of the present invention;
Fig. 4 is the sectional view that spool is automatically adjusted in self-operated flow regulator of the present invention.
Wherein:1. valve body;11. fluid flows into end;12. fluid outflow end;13. upper port;13a. annular spacing grooves;13b.
Annular convex platform;2. hand control valve core;21. cylinder adjustment portion;21a. angular cutouts;22. adjusting rod;3. automatically adjust spool;
31. upper valve core;Spool in 32.;33. bottom spool;34. bottom end cover;4. upper end cover;5. lower spring;Spring on 6..
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
As shown in Figs 1-4, a kind of self-operated flow regulator provided by the invention, including valve body 1, hand control valve
Core 2 and automatic adjustment spool 3;
Wherein 1 inside of valve body is in the cavity body of " people " font, and the right output port of cavity body flows into end 11, cavity for fluid
The left port of body is fluid outflow end 12, and hand control valve core 2 and automatic adjustment spool 3 are arranged in the both ends of cavity body
Between position and hand control valve core 2 protruded outward from the upper port 13 of cavity body;
Wherein hand control valve core 2 includes a cylinder adjustment portion 21 and an operation cylinder with angular cutouts 21a
Adjustment portion 21 rotates and along the outwardly extending adjusting rod 22 of upper surface axis of cylinder adjustment portion 21;
21 outside wall surface of cylinder adjustment portion is bonded with 13 internal face of upper port of cavity body, and under cylinder adjustment portion 21
Annular spacing groove 13a parts inside the upper port 13 of end angular cutouts 21a and cavity body abut against cooperation;The adjusting rod 22
It is stretched out from the upper port 13 of cavity body and the upper end cover 4 at the upper port 13 with cavity body is nested;
Here, rotation adjusting rod 22 makes the lower end angular cutouts 21a of cylinder adjustment portion 21 along the upper port 13 of cavity body
The annular spacing groove 13a in portion rotates and then controls the lower end angular cutouts 21a of cylinder adjustment portion 21 and the fluid of cavity body right end
The opening degree for flowing into end 11 has the function that adjust fluid flow manually;
Automatic adjustment 3 nesting of spool is fastened in the upper port 13 of cavity body and under hand control valve core 2
Side, it is described automatic adjustment spool 3 include upper valve core 31, middle spool 32, bottom spool 33 and bottom end cover 34, wherein upper valve core 31, in
Spool 32, bottom spool 33 and bottom end cover 34 are the cylindrical structure with locking edge, and upper valve core 31, middle spool 32, bottom spool
33 and bottom end cover 34 be nested successively;The cylinder side wall of the upper valve core 31 offers multiple windows, the cylinder of middle spool 32
Side wall also offers multiple windows, and the lower face of bottom end cover 34 is provided with recirculation hole;It is provided in support in the bottom spool 33
The lower spring 5 of spool 32, and the upper spring 6 of support upper valve core 31 is provided in middle spool 33.
Preferably, the lower external buckle edge nesting of the upper valve core 31 is fastened in the upper internal buckle edge of middle spool 32, and middle spool
32 lower external buckle edge nesting is fastened in the upper internal buckle edge of bottom spool 33, lower port outside wall surface and the bottom end cover 34 of bottom spool 33
Internal face fitting is fixed, the annular stop of the upper external buckle edge support clamping close of bottom end cover 34 inside the upper port 13 positioned at cavity body
On annular convex platform 13b below slot 13a.
Preferably, the cylinder side wall of the upper valve core 31 is opened up there are four window, and the cylinder side wall of middle spool 32 offers
Two windows.
Preferably, the end that the adjusting rod 22 stretches out upper end cover 4 is conveniently operated adjusting rod equipped with turntable by turntable
22。
Preferably, the adjusting rod 22 stretches out the rectangular port in end of upper end cover 4 or D-shaped port, and matched
Turntable is provided with corresponding rectangular opening or D-shaped hole.
Preferably, the outer end face of the upper end cover 4 is provided with dial for 22 1 weeks along adjusting rod, and adjusting rod 22 or turntable
Upper correspondence is furnished with debug point, when the debug point on adjusting rod 22 or turntable, which is turned to, to be aligned with a certain scale on dial,
The fluid of lower end angular cutouts 21a and cavity body right end that represent the cylinder adjustment portion 21 of this graduation indication flow into opening for end 11
It is right, i.e. the fluid flow of this graduation indication.
Self-operated flow regulator provided by the invention, the course of work are as follows:
When the hot water of heat distribution pipe network is flowed into from the right output port of cavity body, can initial heat be adjusted with rotation manual spool
Water through-current capacity, and the dial on upper end cover can be used for observing the opening degree of manual spool.Upper and lower spring is equal during original state
There is certain preload amount, controlled by automatic spool bottom end cover, and original state can be set according to actual conditions.When in pipe network
Pressure change when, upper and lower spring can automatically adjust the length of itself according to the size of pressure change, be directly changed runner
Size, so as to change the size of hot water flow, to achieve the purpose that adjust hot water flow balance.Here, pressure change hour is only
It works there are one spring, i.e., is under pressure on automatic spool and first upper spring is compressed, change the runner size of side, after
And ensure the flow equilibrium of setting.When pressure change is big, after having compressed spring, lower spring is also compressed, i.e., upper and lower bullet
Spring works simultaneously, and then changes the runner size of side again, so as to change the size of hot water flow, this runner reduce from
And reduce hot water flow, achieve the purpose that adjust hot water flow balance.
Self-operated flow regulator provided by the invention, hand control valve core control the switch of valve and the entirety of runner
Opening degree, and be provided on upper end cover dial have the function of convenient for observation, adjust, measurement valve is opened and is spent, herein
The setting of dial can also allow user to set initial value, and then determine the opening degree of valve according to working site.In short, hand
Dynamic control spool has the effects that cut-off, adjusting, throttling, non-return, shunting or overflow release.It automatically adjusts spool and uses two-pass
Spring plays the role of balance system, and two springs are sectional-regulated to the position progress of spool, improve balance adjustment fluid
The precision of flow.It specifically, can be according to fluid flow, the variation of pressure and then by two-pass spring come the big of constant flow rate
It is small, so as to ensure the constant of fluid flow, realize thermodynamic equilibrium.
Self-operated flow regulator provided by the invention, the degree of regulation of fluid flow greatly increase, and realize thermal pipe
The thermodynamic equilibrium of net saves cost of labor debugging cost.
In the description of the present invention, it is to be understood that term " on ", " in ", " under ", the sides of the instructions such as "left", "right"
Position or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of the description present invention and simplify description,
Rather than instruction or imply signified device or element must have specific orientation, with specific azimuth configuration and operation, because
This is not considered as limiting the invention.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (7)
1. a kind of self-operated flow regulator, which is characterized in that including valve body, hand control valve core and automatic adjustment spool;
The valve inner is in the cavity body of " people " font, and the right output port of the cavity body flows into end, the cavity for fluid
The left port of body is fluid outflow end, and the hand control valve core and automatic adjustment spool are arranged among the both ends of cavity body
Position and hand control valve core is protruded outward from the upper port of cavity body;
The hand control valve core includes a cylinder adjustment portion with angular cutouts and an operation cylinder adjustment portion rotation
And along the outwardly extending adjusting rod of upper surface axis of cylinder adjustment portion;
The cylinder adjustment portion outside wall surface is bonded with the upper port internal face of cavity body, and the lower end of the cylinder adjustment portion, which tilts, cuts
Mouth abuts against cooperation with the annular stop slot part inside the upper port of cavity body;The adjusting rod is stretched from the upper port of cavity body
Go out and be nested with the upper end cover at the upper port of cavity body;
The automatic adjustment spool nest card closes in the upper port of cavity body and positioned at the lower section of hand control valve core, it is described from
Dynamic adjusting spool includes upper valve core, middle spool, bottom spool and bottom end cover, and the upper valve core, middle spool, bottom spool and bottom end cover are equal
To carry the cylindrical structure of locking edge, and upper valve core, middle spool, bottom spool and bottom end cover are nested successively;The upper valve core
Cylinder side wall offer multiple windows, the cylinder side wall of middle spool also offers multiple windows, the lower face of the bottom end cover
It is provided with recirculation hole;The lower spring of spool in support is provided in the bottom spool, support upper valve is provided in the middle spool
The upper spring of core.
2. self-operated flow regulator as described in claim 1, which is characterized in that the lower external buckle edge nest card of the upper valve core
It closes in the upper internal buckle edge of middle spool, the lower external buckle edge nesting of the middle spool is fastened in the upper internal buckle edge of bottom spool, described
The lower port outside wall surface of bottom spool is bonded fixation with the internal face of bottom end cover, and the upper external buckle edge support clamping close of the bottom end cover is in place
On the annular convex platform below annular spacing groove inside the upper port of cavity body.
3. self-operated flow regulator as described in claim 1, which is characterized in that the cylinder side wall of the upper valve core offers
Four windows, the cylinder side wall of the middle spool open up that there are two windows.
4. self-operated flow regulator as described in claim 1, which is characterized in that the outer end face of the upper end cover is along adjusting rod
It is provided with dial within one week.
5. self-operated flow regulator as described in claim 1, which is characterized in that the adjusting rod stretches out the end of upper end cover
Equipped with turntable.
6. self-operated flow regulator as claimed in claim 5, which is characterized in that the adjusting rod stretches out the end of upper end cover
Rectangular port, and matched turntable is provided with corresponding rectangular opening.
7. self-operated flow regulator as claimed in claim 5, which is characterized in that the adjusting rod stretches out the end of upper end cover
D-shaped port, and matched turntable is provided with corresponding D-shaped hole.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711341051.0A CN108194674B (en) | 2017-12-14 | 2017-12-14 | A kind of self-operated flow regulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711341051.0A CN108194674B (en) | 2017-12-14 | 2017-12-14 | A kind of self-operated flow regulator |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108194674A true CN108194674A (en) | 2018-06-22 |
CN108194674B CN108194674B (en) | 2019-03-01 |
Family
ID=62574292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201711341051.0A Expired - Fee Related CN108194674B (en) | 2017-12-14 | 2017-12-14 | A kind of self-operated flow regulator |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108194674B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113958742A (en) * | 2021-09-29 | 2022-01-21 | 合肥通用机械研究院有限公司 | Two-stage tower type adjustable constant flow balance valve |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1888498A (en) * | 2006-07-26 | 2007-01-03 | 浙江大学 | Control valve core device for high-precision automatic flow balancing valve and producing method thereof |
CN202228737U (en) * | 2011-09-28 | 2012-05-23 | 湘潭瑞龙液压有限公司 | One-way throttle valve |
JP2015170722A (en) * | 2014-03-06 | 2015-09-28 | 東フロコーポレーション株式会社 | electromagnetic actuator |
CN204985904U (en) * | 2015-08-18 | 2016-01-20 | 绥中泰德尔自控设备有限公司 | Dynamic pressure differential balanced valve that has valve turnout function and digital display pressure differential setting value |
-
2017
- 2017-12-14 CN CN201711341051.0A patent/CN108194674B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1888498A (en) * | 2006-07-26 | 2007-01-03 | 浙江大学 | Control valve core device for high-precision automatic flow balancing valve and producing method thereof |
CN202228737U (en) * | 2011-09-28 | 2012-05-23 | 湘潭瑞龙液压有限公司 | One-way throttle valve |
JP2015170722A (en) * | 2014-03-06 | 2015-09-28 | 東フロコーポレーション株式会社 | electromagnetic actuator |
CN204985904U (en) * | 2015-08-18 | 2016-01-20 | 绥中泰德尔自控设备有限公司 | Dynamic pressure differential balanced valve that has valve turnout function and digital display pressure differential setting value |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113958742A (en) * | 2021-09-29 | 2022-01-21 | 合肥通用机械研究院有限公司 | Two-stage tower type adjustable constant flow balance valve |
CN113958742B (en) * | 2021-09-29 | 2023-12-19 | 合肥通用机械研究院有限公司 | Double-stage tower type adjustable constant flow balance valve |
Also Published As
Publication number | Publication date |
---|---|
CN108194674B (en) | 2019-03-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108194674B (en) | A kind of self-operated flow regulator | |
CN203857111U (en) | Numerically controlled intelligent constant temperature control mechanism for kitchen and bath water flow | |
ES2208574T3 (en) | MEBRANA HYDRAULIC VALVE FOR FLUID FLOW REGULATION. | |
CN201539611U (en) | Visual adjusting automatic water replenishing valve | |
CN206449038U (en) | Electromagnetic hydraulic pressure flow speed control valve | |
CN203797078U (en) | Integrated pressure and temperature reducing valve | |
US3349798A (en) | Allen variable valves | |
MX173876B (en) | CONSTRUCTION OF A SINGLE HANDLE VALVE WITH SAVINGS OF ENERGY ANTI-ESCALDADOS / ANTI-BURNS | |
CN208567007U (en) | A kind of variable-flow weighing apparatus temperature control valve | |
CN207975292U (en) | A kind of self-balanced flow valve | |
CN206972999U (en) | A kind of self-operated type constant-temperature difference control valve and its system | |
CN203979511U (en) | multi-functional flow control valve | |
CN208185546U (en) | A kind of dynamic differential pressure balanced type electric control valve | |
SE410803B (en) | APPARATUS FOR CONTROLLING THE FLOW OF AIR THROUGH A VENTILATION PASSAGE | |
CN204784858U (en) | Novel control by temperature change governing valve | |
WO2015199400A1 (en) | Automatic flow rate regulating bidet valve | |
CN206409651U (en) | A kind of double-current adjustable valve | |
CN205897507U (en) | Mechanical type gas heater who possesses gas voltage stabilizing function | |
CN205207874U (en) | Direction type single seat temperature -sensing valve | |
CN205036932U (en) | Differential pressure balance valve | |
CN210397847U (en) | Axial flow type voltage regulator | |
CN203176517U (en) | Low-temperature protective valve | |
CN203176516U (en) | Overheating protective valve | |
CN220082279U (en) | Temperature control valve knob | |
CN208951374U (en) | It is visual to adjust differential-pressure bypass valve |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190301 Termination date: 20201214 |