CN2401745Y

CN2401745Y - Electric valve

Info

Publication number: CN2401745Y
Application number: CN 99257294
Authority: CN
Inventors: 叶立标
Original assignee: Ningbo Amico Copper Valves Manufacturing Co Ltd
Current assignee: Ningbo Amico Copper Valves Manufacturing Co Ltd
Priority date: 1999-12-15
Filing date: 1999-12-15
Publication date: 2000-10-18
Anticipated expiration: 2009-12-15

Abstract

The utility model discloses an electric valve composed of a driver which is composed of an upper shell, a lower shell, a motor, a crank shaft, a pulley wheel, a push rod mechanism, two metal sheets, etc., and a valve which is composed of a valve body, a valve cover, a valve rod, a spring, a piston, a piston frame, etc. The electric valve adopts the motor for driving and realizes transmission of power through the crank shaft and the pulley wheel. The starting and stopping of the valve adopts a piston type structure, so the utility model has the advantages of reasonable design, low manufacture cost, large driving force, reliable closure, no influence on the water pressure of a pipeline, convenient installation, etc.

Description

Mortor operated valve

The utility model relates to the valve arrangement of motor as driving force.

In heating, heating ventilation and air-conditioning system, temperature controlling generally adopts solenoid valve to realize, solenoid valve is to utilize electromagnetic induction principle, and the driving force of generation is little, and it is unreliable to close, and leakage phenomenon is often arranged, and makes users quite troublesome.Also have with mortor operated valve to replace solenoid valve, this mortor operated valve adopts hysteresis synchronous motor mostly, and with reduction gear transferring power opening/shutting valve, because the gear accuracy of manufacturing requires high, so cost is higher, also occurs often causing valve to close because of stuck phenomenon takes place accuracy of gear problem.

The purpose of this utility model is to overcome the defective of prior art and provides a kind of and improve driving force, closes reliable, as to reduce manufacture cost mortor operated valve.

According to above-mentioned purpose, embodiment of the present utility model is: on being arranged on, the driver of lower housing cavity and valve are formed, described valve comprises the valve body that is connected with lower shell body, the valve gap that is connected with valve seal, drive the keying element and the valve port that open and close valve port by valve rod and close the spring that resets, it is characterized in that described driver is a power with the motor that is fixed on the bracket I, on its output shaft, be provided with the bent axle that is in transmission connection, the other end of bent axle is bearing on the bracket I I, bent axle is provided with the pulley that is synchronized with the movement, promoted by pulley and along bracket I, on the II guide groove is done, following reciprocating transfer bar mechanism metallic rod, and be located at be in parallel in the electric motor loop order about the bimetal release SW1 and the SW2 of action by bent axle.

The keying element of described valve is the piston that is fastened on the valve rod lower end, and piston is made switching motion up and down along the piston shelf that is interlockingly connected with valve gap, and piston shelf is connected with valve body, valve gap, piston seal simultaneously.

The utility model substitutes Electromagnetic Drive with motor driving, has improved driving force, has strengthened the reliability of closing; Substitute gear transmission with bent axle, pulley transmission, make design more reasonable, manufacture cost reduces; The keying element of valve adopts piston cylinder operator, has eliminated the influence of pipeline hydraulic pressure, guarantees that valve closes; Remove this, also have the advantage of driver easy accessibility, if meet in case outage, removable drive and realize valve closing at any time.

Description of drawings.

Fig. 1 is the utility model structural representation.

Fig. 2 is circuit theory diagrams.

Below with reference to above-mentioned accompanying drawing the utility model embodiment is remake and to elaborate.

Shown in Fig. 1-2, mortor operated valve is made up of driver and valve.

Driver is arranged on the upper shell (8) and lower shell body (7) inner chamber of mutual snapping, bracket I (13) and bracket I I (14) snap onto, in the lower shell body, driver is a power with motor (10), motor is fixed on the bracket I, can be connected with external circuit by power line (15), the output shaft of motor is with the cross bent axle (11) that is in transmission connection, the other end of bent axle is bearing in the bracket I I axis hole, bent axle is provided with the pulley (12) that is synchronized with the movement, promoted by pulley and along bracket I, on the II guide groove is done, the following reciprocating spring-biased transfer bar mechanism metallic rod (9) that is subjected to, one end of transfer bar mechanism is hinged on bracket I, the last (not shown) of II, the transfer bar mechanism metallic rod is conflicted on valve rod (4), in electric motor loop, be provided with simultaneously be in parallel order about the bimetal release SW1 and the SW2 of action by bent axle.

Valve have one with the valve body lower shell body snapping and that have fluid inlet and outlet (1), the specific channel structure of valve body has worked to eliminate the pipeline influence of hydraulic pressure, the valve gap that is threaded with valve body (5), on its junction plane, be provided with " O " RunddichtringO, be provided with piston shelf (3) between bonnet lower and the valve body, the concavo-convex ring of piston shelf and valve gap is interlockingly connected, while and valve body, valve gap, piston is tightly connected with " O " RunddichtringO, be fastened on the valve rod lower end as the piston (2) that opens and closes element, drive the keying valve port by valve rod, and being the drawn stem mechanism urges, valve rod opens valve port, closing of valve port is subjected to spring (6) reset response to realize that another effect of spring makes the snapping of valve body and lower shell body more fastening.

This mortor operated valve is mainly used in the switch control of hot and cold water in heating, the heating ventilation and air-conditioning system, is used with temp controller (16).During normality, the bimetallic strip SW1 closure in the driver, after room temperature was set, blue line and brown line were connected power supply, and motor rotates, and drives bent axle, pulley rotation, and pulley drives piston by transfer bar mechanism metallic rod actuate valve stem again and moves downward, thereby opens valve port.Bent axle orders about bimetallic strip SW1 disconnection again simultaneously, and the SW2 closure disconnects power supply.When temperature reached setting value, blue line and black line were connected power supply, cooperated with SW2 to make electric motor starting once more, drive bent axle, pulley rotation, valve rod is moved upward under spring action, thus close port, simultaneously, the rotation of bent axle is ordered about bimetallic strip SW2 again and is disconnected, the SW1 closure, thus power supply is disconnected, when the temperature departure setting value, blue line and brown line are connected once more, repeat to realize the keying of valve according to this.

Claims

1. mortor operated valve, on being arranged on, lower shell body (8), (7) driver of inner chamber and valve are formed, described valve comprises the valve body (1) that is connected with lower shell body, the valve gap that is connected with valve seal (5), drive the keying element and the valve port that open and close valve port by valve rod (4) and close the spring (6) that resets, it is characterized in that described driver is a power with the motor (10) that is fixed on the bracket I (13), on its output shaft, be provided with the bent axle (11) that is in transmission connection, the bent axle the other end is bearing on the bracket I I (14), bent axle is provided with the pulley (12) that is synchronized with the movement, promoted by pulley and along bracket I, on the II guide groove is done, following reciprocating transfer bar mechanism metallic rod (9), and be located at be in parallel in the electric motor loop order about the bimetal release SW1 and the SW2 of action by bent axle.

2. mortor operated valve as claimed in claim 1, the keying element that it is characterized in that described valve is the piston (2) that is fastened on valve rod (4) lower end, piston is made switching motion up and down along the piston shelf (3) that is interlockingly connected with valve gap, and piston shelf is connected with valve body, valve gap, piston seal simultaneously.