CN203202372U - Self-lock device of adjusting valve for central air-conditioning system - Google Patents
Self-lock device of adjusting valve for central air-conditioning system Download PDFInfo
- Publication number
- CN203202372U CN203202372U CN 201320044134 CN201320044134U CN203202372U CN 203202372 U CN203202372 U CN 203202372U CN 201320044134 CN201320044134 CN 201320044134 CN 201320044134 U CN201320044134 U CN 201320044134U CN 203202372 U CN203202372 U CN 203202372U
- Authority
- CN
- China
- Prior art keywords
- self
- lock device
- valve rod
- central air
- turbine
- 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.)
- Expired - Lifetime
Links
Landscapes
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model discloses a self-lock device of an adjusting valve for a central air-conditioning system. The self-lock device is arranged between a gear reducing mechanism and a valve rod and comprises a worm and worm gear which are engaged with each other, wherein the worm is connected at a power output end of the gear reducing mechanism, and the worm gear is fixed onto the valve rod. The self-lock device has the advantages that the self-lock device is simple in structure, better in self-lock effect, high in transmission ratio and low in overall energy consumption, torque can only be unidirectionally transferred, and the transmission structure is simplified.
Description
Technical field
The utility model relates to a kind of modulating valve structure, especially relates to the self-locking device in the modulating valve.
Background technique
Central air-conditioning system comprises freezing unit, chilled water circulation loop, cooling water circulation loop and each end-equipment, the chilled water circulation loop is delivered to end-equipment with the cold that freezing unit produces, the temperature controller that is connected by end-equipment is according to the comparison of desired temperature and actual temperature value, valve to the chilled water pipeline is regulated control, thereby realizes the control to the output of end-equipment heat exchange amount.In order to guarantee the needs of each end-equipment heat exchange amount, the pressure of chilled water circulation pipe network need be taken into account the supply pressure of distal-most end, and in addition, each end-equipment is not to need to carry out heat exchange simultaneously, therefore always there is the modulating valve at part end-equipment place to close, causes local pressure reduction higher.
Existing modulating valve actuator generally includes controller, drive motor, reduction gears mechanism and self-locking spring, the power intake of reduction gears mechanism connects the rotating shaft of drive electrode, clutch end connects valve rod, controller output control signal, the control drive motor rotates, drive valve rod and rotate by the reduction gears mechanism back of slowing down, realize valve opening, the operation regulating the flow size and close.One end of self-locking spring is connected on the valve body, the other end is connected on the valve rod, direction of rotation when its elastic force direction and valve rod are driven, when controller output reset signal, the drive motor dead electricity, valve rod rotates under the effect of self-locking spring automatically, guarantees that modulating valve is in normally open or normally closed state.Because the local pressure reduction at end-equipment return piping modulating valve place is bigger, valve rod is promoted by spool easily, and reduction gears mechanism and drive motor also can be servo-actuated, when if pressure reduction surpasses the torsion of self-locking spring, can promote the spool displacement, cause occurring leaking, cause the loss of cold, if but the torsion of increase self-locking spring can need drive electrode that bigger moment of torsion is provided when opening again, certainly will increase power and the energy consumption of drive motor.
Summary of the invention
The purpose of this utility model provides a kind of central air-conditioner modulating valve self-locking device of self-locking better effects if.
Technical solution of the present utility model is: a kind of central air-conditioner modulating valve self-locking device, be arranged between reduction gears mechanism and the valve rod, it is made up of intermeshing worm screw and turbine, wherein worm screw is connected on the clutch end of described reduction gears mechanism, and turbine is fixed on the described valve rod.
In worm screw and the worm gear drive pair, moment can only be transmitted from worm screw to the turbine direction, can not be passed to worm screw by turbine, therefore the clutch end with reduction gears mechanism is connected on the worm screw, and turbine is fixed on the valve rod, the power that no matter acts on the valve rod has much, all can not make turbine drive worm screw and rotate, therefore can realize good self-locking effect in any position, the velocity ratio between worm screw and the turbine is bigger in addition, the power of corresponding drive motor can also reduce, and energy consumption also can reduce.
Described turbine is fan-shaped.Simplified structure, the volume that when guaranteeing self-locking, reduces to take.
The utility model has the advantages that: simple in structure, moment can only unidirectional delivery, the self-locking better effects if, and velocity ratio is big, has simplified drive mechanism, and whole energy consumption is lower.
Description of drawings
Accompanying drawing 1 is the structural representation under the utility model embodiment closed condition,
Accompanying drawing 2 is the structural representation under the utility model embodiment opening state;
1, drive motor, 2, reduction gears mechanism, 3, worm screw, 4, turbine, 5, valve rod.
Embodiment
Embodiment:
Consult Fig. 1-2, a kind of central air-conditioner modulating valve self-locking device is arranged between reduction gears mechanism 2 and the valve rod 5, and it is made up of intermeshing worm screw 3 and turbine 4, wherein worm screw 3 is connected on the clutch end of reduction gears mechanism 2, and turbine 4 is fixed on the valve rod 5.Turbine 4 is fan-shaped.
During normal running, the controller (not shown) of modulating valve control drive motor 2 rotates, and reduction gears mechanism 2 transfers to drive motor 1 power on the worm screw 3, drive fan-shaped turbine 4 swings by worm screw 3, valve rod 5 is servo-actuated, drives spool travel, realizes the adjusting of flow.When the controller of modulating valve resets, drive motor 2 dead electricity are out of service, this moment, worm screw 3 stopped operating, though turbine 4 can be with valve rod 5 swings, but because worm screw 3 is spacing, turbine 4 can't drive worm screw 3 and rotate, and spool rested on the current position and was fixed this moment, can realize the self-locking of present flow rate.Certainly, also can be by program setting when resetting in the controller, 2 time-delay operation a period of times of control drive motor, turn to reset position until valve rod 5, make spool be adjusted to the state of totally-enclosed or standard-sized sheet from current location, realize that modulating valve self-locking normally closed or that often open fixes.
Above-listed detailed description is specifying at one of the utility model possible embodiments, this embodiment is not in order to limit claim of the present utility model, allly do not break away from the equivalence that the utility model does and implement or change, all should be contained in the claim of this case.
Claims (2)
1. central air-conditioning system modulating valve self-locking device, be arranged between reduction gears mechanism and the valve rod, it is characterized in that: it is made up of intermeshing worm screw and turbine, and wherein worm screw is connected on the clutch end of described reduction gears mechanism, and turbine is fixed on the described valve rod.
2. a kind of central air-conditioning system modulating valve self-locking device according to claim 1, it is characterized in that: described turbine is fan-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320044134 CN203202372U (en) | 2013-01-25 | 2013-01-25 | Self-lock device of adjusting valve for central air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320044134 CN203202372U (en) | 2013-01-25 | 2013-01-25 | Self-lock device of adjusting valve for central air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203202372U true CN203202372U (en) | 2013-09-18 |
Family
ID=49146480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320044134 Expired - Lifetime CN203202372U (en) | 2013-01-25 | 2013-01-25 | Self-lock device of adjusting valve for central air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203202372U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108635713A (en) * | 2018-05-16 | 2018-10-12 | 西安工程大学 | A kind of Novel firefighting nozzle |
-
2013
- 2013-01-25 CN CN 201320044134 patent/CN203202372U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108635713A (en) * | 2018-05-16 | 2018-10-12 | 西安工程大学 | A kind of Novel firefighting nozzle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2520383A (en) | Contra-rotating open fan propulsion system | |
| CN103673198A (en) | Variable temperature and pressure control system of refrigerating media of central air-conditioner | |
| CN202325800U (en) | Cooling system for engine, and engineering machinery | |
| CN203202372U (en) | Self-lock device of adjusting valve for central air-conditioning system | |
| CN202577435U (en) | Heat radiating device for excavator | |
| CN206281096U (en) | A kind of new Regional Energy secondary pumping system of utilization transmission pipeline network accumulation of energy | |
| CN107905881A (en) | A kind of engineering machinery hydraulic independence cooling system | |
| CN202366004U (en) | Full-automatic medical temperature and pressure-regulating ice blanket | |
| CN201202521Y (en) | Electric control hydraulic drive fan heat system with finite pressure stop valve | |
| CN203041895U (en) | Pipeline machine | |
| CN102406524A (en) | Full-automatic medical temperature and voltage adjusting ice blanket | |
| CN105065613A (en) | Speed regulating type hydraulic coupling | |
| CN210686320U (en) | Flow-adjustable engine cooling water pump | |
| CN202521883U (en) | Electric water heater with intelligent water flow adjustment function | |
| CN204212844U (en) | Electric control variable flow amount engine cooling water pump | |
| CN210770637U (en) | Strong stability low temperature valve | |
| CN208845750U (en) | A kind of electromagnetic valve quantitatively adjusted | |
| CN203627325U (en) | Compressor inlet guide vane adjusting device | |
| CN202494257U (en) | Refrigerator ventilation door adjusting device | |
| CN201730667U (en) | Oil line system of clutch of silicone oil fan | |
| CN201858419U (en) | Control device for proportional valve in gas water heater | |
| CN202719704U (en) | Unpowered heat pipe refrigerating system | |
| CN202267294U (en) | Electric air door of refrigerator-freezer | |
| CN202083031U (en) | Temperature-controlled flow control valve | |
| CN201740284U (en) | Scale-restraint frost valve of solar water heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130918 |
|
| CX01 | Expiry of patent term |