CN2221675Y

CN2221675Y - Long-life fluid electromagnetic control valve

Info

Publication number: CN2221675Y
Application number: CN 95239755
Authority: CN
Inventors: 周明
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-05-12
Filing date: 1995-05-12
Publication date: 1996-03-06
Anticipated expiration: 2005-05-12

Abstract

The utility model relates to a durable fluid electromagnetic control valve. A water gate of a water inlet path and a water outlet path in a valve body is arranged on the cavity wall of a flow cutoff cavity in which a sealing piston is arranged. The piston is provided with a return spring in a matching way, the valve body is provided with a pressure regulating cavity which is not only communicated with the flow cutoff cavity but also communicated with the water outlet path, the plug of a closed path in the pressure regulating cavity is a plug which is controlled by an electromagnet and the return spring, and the electromagnet which is used for controlling the plug is an electric magnet which is sealed in the whole magnetic path. The electromagnet presses down the plug when the voltage is communicated, the pressure difference pushes the piston away, and the water gate is smooth; when the electricity of the electromagnet is cut off, the plug returns and seals the path communicated with the water outlet path, and the piston returns to the primary place to seal the water gate. The utility model has the advantages of low electromagnetic power loss, light valve body heating and long service life of the electromagnetic valve.

Description

A kind of durable fluid solenoid electric valve

The utility model relates to the solenoid electric valve of a kind of control valve for fluids, particularly fluid.

Existing solenoid electric valve, the sluice gate that flows to passage and flow pass in the valve body is located on the shut-off chamber chamber wall of interior dress packed-piston, piston is furnished with Returnning spring, also be provided with the pressure regulating cavity that not only is communicated with but also is communicated with in the valve body with flow pass with shut-off chamber, the obstruction that can seal the shut-off chamber passage in the pressure regulating cavity is the obstruction of electromagnet and Returnning spring control, and electromagnet is the electromagnet that magnetic circuit does not seal.In electromagnet when energising, pick up obstruction, flows to the piston that the pressure difference of passage and flow pass pushes open in the shut-off chamber and make sluice gate unimpeded; During the electromagnet outage, the passage that leads to shut-off chamber is sealed in the effect that is blocked in Returnning spring down, and the Returnning spring in the shut-off chamber makes piston reset, seals the sluice gate that flows to passage and flow pass.The shortcoming that this structure exists is, the electromagnet magnetic circuit is not closed to cause heating, quick heating and height, and loss is big, and the continuous operation meeting burns out coil, and working life is short.

The utility model has proposed a kind of low-loss fluid solenoid electric valve of difficult heating at the deficiencies in the prior art.

Task of the present utility model is to realize like this, the utility model is a kind of solenoid electric valve of fluid, the sluice gate that flows to passage and flow pass in the valve body is located on the shut-off chamber chamber wall of interior dress packed-piston, piston is furnished with Returnning spring, also be provided with the pressure regulating cavity that not only is communicated with but also is communicated with in the valve body with flow pass with shut-off chamber, but the obstruction of closed channel is the obstruction of electromagnet and Returnning spring control in the pressure regulating cavity, and the electromagnet that is characterized in controlling obstruction is complete magnetic circuit closed electromagnet.During the electromagnet energising, depress obstruction, flow pass is communicated with shut-off chamber by pressure regulating cavity, flowing to the piston that the pressure difference of passage and flow pass pushes open in the shut-off chamber makes sluice gate unimpeded, during the electromagnet outage, the passage that leads to flow pass is sealed in the effect that is blocked in Returnning spring down, and the pressure difference that flows to passage and flow pass in the shut-off chamber disappears, Returnning spring makes piston reset, seals the sluice gate that flows to passage and flow pass.

The utility model compared with prior art adopts the electromagnet of magnetic circuit closure, has reduced the electromagnetic power loss, alleviates the valve body heating, heats up slowly, and continuous operation can not burn out circle yet.The life-span of solenoid valve prolongs ten times at least.Be active in one's movements.

Fig. 1 is a sectional structure schematic representation of the present utility model.

Fig. 2 is the sectional structure schematic representation of prior art.

Solenoid electric valve among Fig. 2 flows to passage 31 and flow pass in the valve body 28 29 sluice gate 30 is located on the shut-off chamber 26 chamber walls of in-built packed-piston 27, piston 27 Be furnished with back-moving spring 25, also be provided with in the valve body 28 not only be communicated with shut-off chamber 26 but also with stream Go out the pressure regulating cavity 23 that passage 27 is communicated with, can seal logical shut-off chamber passage in the pressure regulating cavity 23 Obstruction 24 are obstructions 24 of electromagnet 22 and back-moving spring 21 controls, electromagnet 22 It is the electromagnet 22 that magnetic circuit does not seal. During electromagnet 22 energising, pick up and stop up 24, Flow to passage 31 and the pressure differential of flow pass 29 and push piston 27 in the shut-off chamber 26 open Make sluice gate 30 unimpeded; During electromagnet 22 outage, stop up 24 works at back-moving spring 21 With the passage of the logical shut-off chamber of lower sealing, the back-moving spring 25 in the shut-off chamber 26 makes piston 27 reset, and seal the sluice gate 30 that flows to passage 31 and flow pass 29. Loss is big, Cause heating, can not long time continuous working, service life is short.

Further describe an embodiment of the present utility model according to Fig. 1 below.Fig. 1 is the fluid solenoid electric valve, the sluice gate 10 that flows to passage 11 and flow pass 9 in the valve body 8 is located on the shut-off chamber 6 chamber walls of interior dress packed-piston 7, piston 7 is furnished with Returnning spring 5, also be provided with the pressure regulating cavity 4 that not only is communicated with but also is communicated with in the valve body 8 with flow pass 9 with shut-off chamber 6, but the obstruction 3 of closed channel is the obstruction 3 of electromagnet 1 and Returnning spring 2 controls in the pressure regulating cavity 4, and the electromagnet 1 of control obstruction 3 is complete magnetic circuit closed electromagnet 1.During electromagnet 1 energising, depress and stop up 3, flow pass 9 is communicated with shut-off chamber 6 by pressure regulating cavity 4, flows to the piston 7 that the pressure difference of passage 11 and flow pass 9 pushes open in the shut-off chamber 6 and makes sluice gate 10 unimpeded; During electromagnet 1 outage, sealing is towards the passage of flow pass 9 under the effect of Returnning spring 2 to stop up 3, and the Returnning spring 5 in the shut-off chamber 6 resets piston 7, seals the sluice gate 10 that flows to passage 11 and flow pass 9.The electromagnetic power loss is few, and the valve body heating is light, and the life-span of solenoid valve is long.

Claims

1, a kind of solenoid electric valve of fluid, the sluice gate (10) that flows to passage (11) and flow pass (9) in the valve body (8) is located on shut-off chamber (6) the chamber wall of interior dress packed-piston (7), piston (7) is furnished with Returnning spring (5), also be provided with the pressure regulating cavity (4) that not only is communicated with but also is communicated with in the valve body (8) with flow pass (9) with shut-off chamber (6), pressure regulating cavity (4) but in the obstruction (3) of closed channel be the obstruction (3) of electromagnet (1) and Returnning spring (2) control, it is characterized in that it is complete magnetic circuit closed electromagnet (1) that the electromagnet (1) of (3) is stopped up in control.