CN2679430Y

CN2679430Y - Electric angle valve

Info

Publication number: CN2679430Y
Application number: CN 200420034859
Authority: CN
Inventors: 张跃
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-01-12
Filing date: 2004-01-12
Publication date: 2005-02-16
Anticipated expiration: 2014-01-12

Abstract

The utility model relates to an electric angle valve, comprising a valve body, a valve plate, a valve shaft, a motor, and support frame used for supporting the motor. The valve body is provided with a liquid inlet pipe and a liquid outlet pipe, the output shaft of the motor is connected with the valve shaft through a transmission screw, the and of the output shaft of the motor is fixedly connected with a transmission nut, the transmission nut is connected with the transmission screw through threads, the end of the transmission screw is movably connected with the valve shaft, a guide plate which makes the transmission screw can not rotate is arranged on the middle part of the transmission screw, and the support frame is provided with a microstroke switch. One end head of the guide plate can contact with the contact points of the upper limiter and lower limiter of the microstroke switch. After the transmission nut rotates certain angle, the positive and reverse rotary movement of the output shaft of the motor is converted into the vertically reciprocal movement of the valve shaft through the transmission screw, and the relatively high reliability of the operation of the electric angle valve can be ensured through the control of the travel switch. The electric angle valve ahs the advantages of simple structure, easy installation, easy debugging, and small part abrasion, and in particular to the abrasion of the sealing elements is greatly decreased and then maintenance is reduced.

Description

A kind of Electric angle valve

Technical field

The utility model belongs to the mortor operated valve technical field, relates to a kind of Electric angle valve.

Background technique

Valve is mounted in liquid, the gas medium conveyance conduit, is the important device of controlling liquid, gas medium circulation.Mortor operated valve is present the most frequently used a kind of valve, and traditional mortor operated valve structure is very complicated, repeats to be provided with electronic protection and Machine guarding, causes the fault point to increase, and complexity is installed, and use is inconvenient, and amount of maintenance is big.

Summary of the invention

Technical problem to be solved in the utility model is the deficiency at mortor operated valve in the prior art, and a kind of simple in structure, not easy break-down, reliable, good seal performance, the low Electric angle valve of adjustment accuracy requirement are provided.

The technological scheme that solution the utility model technical problem is adopted is the support that this Electric angle valve comprises valve body, valve plate, valve shaft, motor, support motor, the feed liquor mouth of pipe and the fluid mouth of pipe are arranged on the valve body, the output shaft of motor is connected by drive screw with valve shaft, it is the fixedly connected transmission nut of output axle head of motor, transmission nut is threaded with drive screw, the end of drive screw adopts turning joint to be connected with valve shaft, and there is the guide plate that drive screw can not be rotated at the middle part of drive screw.Micro limit switch is installed on the support, and a termination of guide plate can touch with the upper and lower spacing device contact of this micro limit switch.

The utility model rotatablely moves the positive and negative of motor output shaft by the transmission nut rotating certain angle, be converted into the up-and-down movement of valve shaft again by drive screw, control by position limit switch, the mortor operated valve operation is had than higher reliability, and structure is very simple, and is easy for installation, be easy to debugging, component wear is little, and particularly the wearing and tearing of Sealing reduce greatly, reduces maintenance.

Description of drawings

Below in conjunction with embodiment's accompanying drawing the utility model is described in further detail.

Fig. 1 is the structural front view of the utility model when valve plate is opening state

Fig. 2 is the left side view of Fig. 1

Fig. 3 is the right side view of Fig. 2

Fig. 4 is the structural front view of the utility model when valve plate is closed condition

Fig. 5 is the left side view of Fig. 4

Fig. 6 is the right side view of Fig. 5

Among the figure: 1-motor 2-mounting plate 3-upper limit ring 4-goes up skidding 10-guide plate 11 under the skidding 5-transmission nut 6-support 7-lower limit cover 8-drive screw 9-, 32,35,39-Cross

Recess Head Screw

12,22,34,36,41,44-standard spring pad 13-nut 14-spring 15-valve shaft 16-

plastics king pad

17,24,25-O type circle 18-gland nut 19-axle sleeve 20-copper sheathing 21,43-hexagon socket cap head screw 22-standard spring pad 23-valve seat flange 26-valve flange 27-valve body 28-connecting ring 29-T RunddichtringO 30-valve plate 31-support stiffening plate 32-Cross Recess Head Screw 33-nut 37-micro limit switch 38-sensitive switch seat 40-nut 42-plain washer 45-feed liquor mouth of pipe 46-fluid mouth of pipe 47--snubber contact 48-drive screw connecting head 49-valve shaft connects groove

Embodiment

In the present embodiment, fixedly connected transmission nut (5) on the output shaft of motor (1), transmission nut (5) is threaded with drive screw (8), guide plate (10) and drive screw (8) are fixed as one by Cross Recess Head Screw (11) and nut (13) at drive screw (8) middle part, and limit by guide plate (10) drive screw (8) can not be rotated with transmission nut (5).Supporting plate (6) is passed in two terminations of guide plate (10), can move up and down in the opening slot of supporting plate.It is that the end of drive screw (8) is the drive screw connecting head (48) of retaining ring structure that the end of drive screw (8) is connected with the turning joint of valve shaft (15), and there is valve shaft groove (49) upper end of valve shaft (15), the groove bar portion of valve shaft groove (49) is inserted in the retaining ring of drive screw connecting head (48), has spring (14) to be enclosed within on the termination that enters valve shaft in the retaining ring (15) in the retaining ring of drive screw connecting head (48).When valve plate (30) is closed the fluid mouth of pipe (46), the common regulating action that constitutes valve plate pressure of the well width of spring (14) and valve shaft groove (49), reach seal request, help reducing control accuracy simultaneously to the motor rotation time, promptly do not need high stroke accuracy control, reduce the debugging requirement, make structural member not fragile, can reduce production costs greatly.Valve shaft (15) pass valve body (27) locate alternate multi-stage sealed of plastics king pad (16), O type circle (17) and and gland nut (18), axle sleeve (19), copper sheathing (20) be enclosed within valve shaft (15) and go up and form sealing configuration, because valve shaft only moves up and down rather than rotates in the sealing structure and moves up and down, therefore the wearing and tearing to seal ring reduce the maintenance in the minimizing work and the replacing of accessory greatly.On the sealing surface of valve plate (30), be embedded with T RunddichtringO (29).The upper and lower spacing device contact (47) that can touch with the termination of guide plate (10) is arranged on the micro limit switch of installing on the support (37).

During the utility model work, if mortor operated valve is in state shown in Figure 1, in the time will closing mortor operated valve, starting electrical machinery (1) then, motor output shaft drives transmission nut (5) rotation, the drive screw (8) that is threaded with transmission nut (5) is because of being subjected to the restriction of guide plate (10), can not rotate with transmission nut (5), can only do and move downward, valve plate (30) is closed, after valve plate (30) touched the fluid mouth of pipe (46), the termination of guide plate (10) touched the lower retainer contact (47) on the micro limit switch (37) simultaneously, with the power supply disconnection of motor, motor (1) stops operating, because valve shaft connects the groove of groove (49) certain width is arranged, even motor stops that certain hysteresis is arranged, the retaining ring of drive screw connecting head (48) can continue to move downward along groove, simultaneously spring (14) is compressed, so just can not damage moving element, the spring that is compressed is passed to valve shaft (15) with elastic force makes valve plate compress the sealing fluid mouth of pipe (46), seals reliable and stable.At this moment mortor operated valve is in closed condition shown in Figure 4.Under this state, if want Open valve, starting electrical machinery (1), at this moment motor backward rotation, motor output shaft drives nut and rotates, make the drive screw (8) that is threaded with transmission nut (5) because of being subjected to the restriction of guide plate (10), can not rotate with transmission nut (5), can only do and move upward, valve plate (30) open to be broken away from and the contacting of the fluid mouth of pipe (46), after the termination of guide plate (10) touches upper limit device contact (47) on the micro limit switch (37), the power supply of motor is disconnected, motor (1) stops operating.

Claims

1, a kind of Electric angle valve, comprise valve body (27), valve plate (30), valve shaft (15), motor (1), the support of support motor (6), the feed liquor mouth of pipe (45) and the fluid mouth of pipe (46) are arranged on the valve body (27), the output shaft that it is characterized in that motor (1) is connected by drive screw (8) with valve shaft (15), this connection is the fixedly connected transmission nut of the output axle head of motor (1) (5), transmission nut (5) is threaded with drive screw (8), the end of drive screw (8) adopts turning joint to be connected with valve shaft (15), and there is the guide plate (10) that drive screw can not be rotated at the middle part of drive screw (8).

2, Electric angle valve according to claim 1 is characterized in that being equipped with on the support micro limit switch (37), and a termination of guide plate (10) can touch with the upper and lower spacing device contact (47) of this micro limit switch.

3, Electric angle valve according to claim 1 and 2, it is that the end of drive screw (8) is the drive screw connecting head (48) of retaining ring structure that the end that it is characterized in that drive screw (8) is connected with the turning joint of valve shaft (15), and there is valve shaft groove (49) upper end of valve shaft (15), the groove bar portion of valve shaft groove (49) is inserted in the retaining ring of drive screw connecting head (48), has spring (14) to be enclosed within on the termination that enters valve shaft in the retaining ring (15) in the retaining ring of drive screw connecting head (48).

4, Electric angle valve according to claim 1 and 2, it is characterized in that valve shaft (15) pass valve body (27) locate alternate multi-stage sealed of plastics king pad (16), O type circle (17) and and gland nut (18), axle sleeve (19), copper sheathing (20) be enclosed within valve shaft (15) and go up and form sealing configuration.

5, Electric angle valve according to claim 1 and 2 is characterized in that being embedded with T RunddichtringO (29) on the sealing surface of valve plate (30).