CN204083438U - A kind of ball valve drive unit of gas ratio valve - Google Patents
A kind of ball valve drive unit of gas ratio valve Download PDFInfo
- Publication number
- CN204083438U CN204083438U CN201420547967.7U CN201420547967U CN204083438U CN 204083438 U CN204083438 U CN 204083438U CN 201420547967 U CN201420547967 U CN 201420547967U CN 204083438 U CN204083438 U CN 204083438U
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- China
- Prior art keywords
- valve
- ball valve
- stepper motor
- drive unit
- screw thread
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Abstract
The utility model provides a kind of ball valve drive unit of gas ratio valve, belong to the technical field of the gas ratio valve of Thermostatic water heaters, solve the problem of solenoid valve Proportional valve gas flow control accuracy and stability, it is characterized in that: the root of described tape spool ball valve is screw thread movement rod, the end of described screw thread movement rod is connected with ball valve drive unit, the stepper motor chamber of described ball valve drive unit is fixed on described Proportional valve end cap, stepper motor is provided with in described stepper motor chamber, reduction gear is provided with between described stepper motor and described screw thread movement rod, the tertiary gear bottom center groove of described reduction gear is precession thread cavity, described tertiary gear and described screw thread movement rod closely cooperate, described stepper motor is connected with control terminal.The combustion gas that the utility model device achieves gas ratio valve precisely controls, and tape spool ball valve and drive unit are Hard link, and ball valve length travel responds synchronous with driving stepper motor, and gas flow is stablized and saved combustion gas.
Description
Technical field
The utility model belongs to the technical field of the gas ratio valve of Thermostatic water heaters, especially a kind of ball valve drive unit of gas ratio valve.
Background technique
Thermostatic water heaters major part is in the market the electromagnetic proportional valve using movable magneto.Its working principle is by changing input gas ratio valve curtage size, change valve opening size, thus to reach the adjustment of gas flow size to ensure the change of water temperature, mainly there is following defect: the motion of gas ratio valve valve opening is having cooperatively interacted by the magnetic jacking force between Proportional valve assembly and ball valve core.Be connected with certain distance between them, belong to and be flexible coupling.When gaseous-pressure and size of current change, easily there is skew and swing in the valve rod of ball valve core, the mobile position of ball valve core is uncertain.When gaseous-pressure and size of current exist unstable, little time large when can cause the aperture of Proportional valve, Returnning spring resets and regulates time of occurrence poor, there is the unresponsive phenomenon of electromagnetic proportional valve, be difficult to the accurate control realizing gas flow, ball valve shutoff end also easily occurs that gas shakes and phenomenon of uttering long and high-pitched sounds simultaneously, makes the appearance fluctuating temperature of water heater, constant temperature effect is poor, can not meet the requirement of accurate temperature control.
Model utility content
The purpose of this utility model is the problems referred to above existed for existing technology, provide a kind of ball valve drive unit of gas ratio valve, solve the problem of solenoid valve Proportional valve gas flow control accuracy and stability, the combustion gas realizing gas ratio valve precisely controls, tape spool ball valve and drive unit are Hard link, ball valve length travel responds synchronous with driving stepper motor, and gas flow is stablized and saved combustion gas.
For this reason, the technical solution that the utility model is taked is:
A kind of ball valve drive unit of gas ratio valve, comprise switch valve, Proportional valve valve seat, Proportional valve end cap, Proportional valve back shroud, combustion gas gas circuit, Returnning spring, tape spool ball valve, the end of described tape spool ball valve is Proportional valve shutoff end, the middle part of described tape spool ball valve is the hollow valve shaft of ball valve, middle part and the root joint of described tape spool ball valve are provided with black box epithelium, the root of described tape spool ball valve is screw thread movement rod, the middle part of described screw thread movement rod is fixed with described Proportional valve end cap, the end of described screw thread movement rod is connected with ball valve drive unit, the stepper motor chamber of described ball valve drive unit is fixed on described Proportional valve end cap, stepper motor is provided with in described stepper motor chamber, reduction gear is provided with between described stepper motor and described screw thread movement rod, the tertiary gear bottom center groove of described reduction gear is precession thread cavity, described tertiary gear and described screw thread movement rod closely cooperate, described stepper motor is connected with control terminal.
As preferred further, described reduction gear is double-reduction gear, and described reduction gear is engaged formed by one-level gear, secondary gear, described tertiary gear.
As preferred further, described Proportional valve shutoff end, the hollow valve shaft of described ball valve and described screw thread movement rod are formed in one.
As preferred further, described tape spool ball valve is that plastics are made.
The beneficial effect of technique scheme is:
(1) drive unit of the present utility model is stepper motor, under non-overload condition, the revolution of motor, stop position only depends on exported pulse signal and umber of pulse, and not by the impact of load variations, and only have periodic error and without cumulative bad error, after energising, stepper motor drives reduction gear to rotate, the rotation of reduction gear makes the screw thread movement rod connected with it realize length travel, the displacement of screw thread movement rod makes to be connected to Returnning spring and produces telescopic displacement, under stepper motor and Returnning spring acting in conjunction, achieve the length travel of tape spool ball valve, thus achieve the aperture size controlling gas ratio valve,
(2) the utility model adopts reduction gear, make the stepper motor underdrive of high speed rotating, more powerful stepper motor can be used, also make reduction gear engage simultaneously and drive screw thread movement rod synchronous axial system, accurately can control gas flow with the change of combustion gas air pressure and magnitude of current size;
(3) ball valve drive unit of the present utility model and integrated ball valve screw thread movement rod achieve Hard link, close structure, the aperture size of tape spool ball valve is not subject to the impact of the instability of gaseous-pressure and size of current, all the time according to the gas flow size of set water temperature, the angular displacement of precise positioning stepper motor, gas flow precise control, the water temperature stability of Thermostatic water heaters is good, ball valve length travel responds synchronous with driving stepper motor, and gas flow is stablized, and saves gas quantity;
(4) the utility model structure is simple, and reduces the gross weight of gas ratio valve, is easy to manufacture.
Accompanying drawing explanation
Fig. 1 is the structural representation of the ball valve drive unit of gas ratio valve of the present utility model.
Fig. 2 is the exploded view of the ball valve drive unit of gas ratio valve of the present utility model.
In figure: 1, switch valve; 2, Proportional valve valve seat; 3, Proportional valve end cap; 4, Proportional valve back shroud; 5, combustion gas gas circuit; 6, Returnning spring; 7, tape spool ball valve; 8, ball valve drive unit; 501, gas inlet; 502, filter screen; 503, switch valve valve port; 504, gas outlet; 701, Proportional valve shutoff end; 702, the hollow valve shaft of ball valve; 703, epithelium; 704, screw thread movement rod; 801, stepper motor chamber; 802, stepper motor; 803, one-level gear; 804, secondary gear; 805, tertiary gear; 806, control terminal.
Embodiment
For making feature of the present utility model and advantage clearly, be described below in conjunction with specific embodiment.
As depicted in figs. 1 and 2, a kind of ball valve drive unit of gas ratio valve, comprise switch valve 1, Proportional valve valve seat 2, Proportional valve end cap 3, Proportional valve back shroud 4, combustion gas gas circuit 5, Returnning spring 6, tape spool ball valve 7, the end of described tape spool ball valve 7 is Proportional valve shutoff end 701, the middle part of described tape spool ball valve 7 is the hollow valve shaft 702 of ball valve, middle part and the root joint of described tape spool ball valve 7 are provided with black box epithelium 703, the root of described tape spool ball valve 7 is screw thread movement rod 704, the middle part of described screw thread movement rod 704 is fixed with described Proportional valve end cap 3, the end of described screw thread movement rod 704 is connected with ball valve drive unit 8, the stepper motor chamber 801 of described ball valve drive unit 8 is fixed on described Proportional valve end cap 3, stepper motor 802 is provided with in described stepper motor chamber 801, reduction gear is provided with between described stepper motor 802 and described screw thread movement rod 704, the tertiary gear 805 bottom center groove of described reduction gear is precession thread cavity, described tertiary gear 805 closely cooperates with described screw thread movement rod 704, described stepper motor 802 is connected with control terminal 806.
In the present embodiment, described reduction gear is double-reduction gear, described reduction gear is engaged formed by one-level gear 803, secondary gear 804, described tertiary gear 805, make the stepper motor underdrive of high speed rotating, more powerful stepper motor can be used, also make reduction gear engage simultaneously and drive screw thread movement rod 704 synchronous axial system, accurately can control gas flow with the change of combustion gas air pressure and magnitude of current size.
In the present embodiment, described Proportional valve shutoff end 701, the hollow valve shaft of described ball valve 702 and described screw thread movement rod 704 are formed in one, ball valve and drive unit is made to achieve Hard link, spool is not easy to occur the problems such as skew swings and position is uncertain, simultaneously also can not by the impact of Returnning spring difference resetting time, ball valve displacement and driving-response synchronization, there will not be cumulative bad error.
In the present embodiment, described tape spool ball valve 7 is made for plastics, make on the Material selec-tion of ball valve more extensive, molding and forming can be realized, reduce manufacture difficulty, similar gas ratio valve weight is all at about 750g in the market, and after implementing the utility model, the weight of gas ratio valve is reduced to 613g, reduce 18%, also reduce manufacture cost simultaneously.
During use, gaseous-pressure sensor and cooling-water temperature sensor testing signal, feed back to temperature-control circuit, temperature-control circuit connection control terminal 806, output pulse signal and umber of pulse Driving Stepping Motor rotate, synchronous drive reduction gear and screw thread movement rod 704, and screw thread movement rod 704 realizes length travel, drive the aperture of Proportional valve shutoff end 701, realize the accurate control of gas flow.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in protection domain of the present utility model.
Claims (4)
1. the ball valve drive unit of a gas ratio valve, comprise switch valve, Proportional valve valve seat, Proportional valve end cap, Proportional valve back shroud, combustion gas gas circuit, Returnning spring, tape spool ball valve, the end of described tape spool ball valve is Proportional valve shutoff end, the middle part of described tape spool ball valve is the hollow valve shaft of ball valve, middle part and the root joint of described tape spool ball valve are provided with black box epithelium, it is characterized in that: the root of described tape spool ball valve is screw thread movement rod, the middle part of described screw thread movement rod is fixed with described Proportional valve end cap, the end of described screw thread movement rod is connected with ball valve drive unit, the stepper motor chamber of described ball valve drive unit is fixed on described Proportional valve end cap, stepper motor is provided with in described stepper motor chamber, reduction gear is provided with between described stepper motor and described screw thread movement rod, the tertiary gear bottom center groove of described reduction gear is precession thread cavity, described tertiary gear and described screw thread movement rod closely cooperate, described stepper motor is connected with control terminal.
2. the ball valve drive unit of gas ratio valve according to claim 1, is characterized in that: described reduction gear is double-reduction gear, and described reduction gear is engaged formed by one-level gear, secondary gear, described tertiary gear.
3. the ball valve drive unit of gas ratio valve according to claim 1, is characterized in that: described Proportional valve shutoff end, the hollow valve shaft of described ball valve and described screw thread movement rod are formed in one.
4. the ball valve drive unit of gas ratio valve according to claim 1, is characterized in that: described tape spool ball valve is that plastics are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420547967.7U CN204083438U (en) | 2014-09-23 | 2014-09-23 | A kind of ball valve drive unit of gas ratio valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420547967.7U CN204083438U (en) | 2014-09-23 | 2014-09-23 | A kind of ball valve drive unit of gas ratio valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204083438U true CN204083438U (en) | 2015-01-07 |
Family
ID=52176159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420547967.7U Expired - Fee Related CN204083438U (en) | 2014-09-23 | 2014-09-23 | A kind of ball valve drive unit of gas ratio valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204083438U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061191A (en) * | 2017-11-22 | 2018-05-22 | 北京动力机械研究所 | A kind of valve motor drive mechanism |
| WO2021115233A1 (en) * | 2019-12-09 | 2021-06-17 | 浙江三花汽车零部件有限公司 | Electric valve |
-
2014
- 2014-09-23 CN CN201420547967.7U patent/CN204083438U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061191A (en) * | 2017-11-22 | 2018-05-22 | 北京动力机械研究所 | A kind of valve motor drive mechanism |
| CN108061191B (en) * | 2017-11-22 | 2019-05-10 | 北京动力机械研究所 | A kind of valve motor drive mechanism |
| WO2021115233A1 (en) * | 2019-12-09 | 2021-06-17 | 浙江三花汽车零部件有限公司 | Electric valve |
| JP2023503550A (en) * | 2019-12-09 | 2023-01-31 | 浙江三花汽車零部件有限公司 | electric valve |
| JP7315794B2 (en) | 2019-12-09 | 2023-07-26 | 浙江三花汽車零部件有限公司 | electric valve |
| EP4075032A4 (en) * | 2019-12-09 | 2023-12-06 | Zhejiang Sanhua Automotive Components Co., Ltd. | Electric valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20200923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |