CN201517654U

CN201517654U - Automatic electro-hydraulic resetting device

Info

Publication number: CN201517654U
Application number: CN200920044130XU
Authority: CN
Inventors: 张永林
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-19
Filing date: 2009-06-19
Publication date: 2010-06-30
Anticipated expiration: 2019-06-19

Abstract

The utility model provides an automatic electro-hydraulic resetting device, comprising a motor, an oil pump, an oil tank assembly, a one-way valve, an electromagnetic overflow valve, and a three-position four-way electromagnetic change valve set. The automatic electro-hydraulic resetting device also comprises an energy accumulator set, an interface of the energy accumulator group is connected with the electromagnetic overflow valve by a one-way valve, the pressure oil is injected into the energy accumulator to realize the energy storage, another interface of the energy accumulator group is connected with an oil return opening of the three-position four-way electromagnetic change valve set by a two-position three-way normally-open electromagnetic ball valve and a pilot-controlled check valve, when the current failure occurs, the energy accumulator releases the energy storage for the system, the oil cylinder automatic extends out, thus a gate is self-closed.

Description

Automatic reset electro-hydraulic device

Technical field

The utility model relates to a kind of electro-hydraulic device, relates in particular to a kind of automatic reset electro-hydraulic device.

Background technique

The blowing gate that industries such as coking, power plant, colliery, iron and steel are used, as Hubei Province formula gate, fan gate, bulkhgead gate, normal pneumatic cylinder or the Electrohydraulic push rod of adopting made drive unit, but because pneumatic cylinder noise height, impact force is big, pipeline is long, winter fraud such as easy freezing auspicious, when pneumatic cylinder or Electrohydraulic push rod are made drive unit when unexpected power failure or fault gate can't close the generation that easily causes the accident immediately.

The model utility content

The purpose of this utility model provides a kind of automatic reset electro-hydraulic device and makes gate driving device, and when unexpected power failure or fault, closed shutter is avoided the generation of accident automatically.

For solving the problems of the technologies described above, the utility model automatic reset electro-hydraulic device comprises motor, oil pump, fuel tank assembly parts, one-way valve, electromagnetic relief valve, 3-position 4-way solenoid directional control valve group, Pilot operated check valve, Solenoid ball valve, also comprises an accumulator group;

Accumulator group one interface is connected with the electromagnetic relief valve filler opening by an one-way valve, and pressure oil output during system start-up, electromagnetic relief valve regulating system working pressure be to setting value, realizes to accumulator injection pressure oil to setting value the realization energy storage simultaneously;

Another interface of accumulator group is connected with the return opening of two-position three way Solenoid ball valve open in usual with 3-position 4-way solenoid directional control valve group by one-way valve, Pilot operated check valve, Solenoid ball valve hydraulic fluid port open in usual is connected during outage, Pilot operated check valve is opened, and the return opening of accumulator group hydraulic fluid port and 3-position 4-way solenoid directional control valve group is connected system is discharged energy storage.

The oil return mouth of pipe is connected with a normally closed Solenoid ball valve of two-position three way with a Pilot operated check valve, this two-position three way Normally closed type Solenoid ball valve hydraulic fluid port is closed during outage, Pilot operated check valve on the return line is closed, and the return opening on the integrated valve platform is closed, and oil does not return into fuel tank.This moment, energy storage pressure oil was connected with three position four-way electromagnetic valve group return opening, utilized three position four-way electromagnetic valve meta J type function, and the oil-feed simultaneously of cylinder rod chamber and rodless cavity forms differential, and oil cylinder stretches out automatically, realizes automatic closed shutter.

Description of drawings

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

Fig. 1 is a plan view of the present utility model

Fig. 2 is a plan view of the present utility model

Fig. 3 is a left view of the present utility model

1 is fuel tank assembly among the figure, the 2nd, and integrated valve platform, the 3rd, electromagnetic relief valve, the 4th, 3-position 4-way solenoid directional control valve (the meta type is the J type), the 5th, Pilot operated check valve, the 6th, Normally closed type two-position three way Solenoid ball valve, the 7th, two-position three way Solenoid ball valve open in usual, the 8th, Pilot operated check valve, the 9th, accumulator group, 10 motors, 11 oil pumps, 12 one-way valves, 13 bypass ball valves, 14 one-way valves, 15 one-way valves, 16 return tubes, 17 oil inlet pipes;

Embodiment

As shown in the figure, the energy-storage type automatic reset electro-hydraulic device is by motor 10, oil pump 11, fuel tank assembly parts 1, integrated valve platform 2, accumulator group 9, some parts such as hydraulic services and pipeline are formed, integrated valve platform 2 comprises one-way valve 12, one-way valve 14, one-way valve 15, electromagnetic relief valve 3 open in usual, 3-position 4-way J type solenoid valve selector valve group 4, two-position three way Solenoid ball valve 7 open in usual, Normally closed type two-position three way Solenoid ball valve 6, Pilot operated check valve 5, Pilot operated check valve 8, accumulator group one interface is connected with electromagnetic relief valve oil inlet pipe 17 by one-way valve 15, during system start-up to accumulator group injection pressure oil, realize energy storage, another interface of accumulator group often leaves Solenoid ball valve 7 by two-position three way and is connected with 3-position 4-way solenoid directional control valve group return tube 16 with one-way valve 12 with Pilot operated check valve 8, and the accumulator group discharges energy storage to system during outage.

The oil return mouth of pipe is connected with the normally closed Solenoid ball valve 6 of Pilot operated check valve 5 and two-position three way, and this two-position three way Normally closed type Solenoid ball valve hydraulic fluid port is closed during outage, and the Pilot operated check valve 5 on the return line is closed, and the return opening on the integrated valve platform is closed, and oil does not return into fuel tank.

Working principle: driven by motor oil pump 11 pressure oil output, to the rated pressure value, accumulator is full of pressure oil to setting value simultaneously through one-way valve 14, electromagnetic relief valve 3, regulating system working pressure.Connecting arbitrary group or 4 commutations of several groups of solenoid directional control valves during work stretches out oil cylinder or withdraws and reach the function of regulating gate switch.

Normal working: connect two two-position three way

Solenoid ball valves

6,7 earlier, wherein two-position three way Solenoid ball valve 7 is open in usual, be to be used for controlling accumulator group 9 to be connected with system total return opening, accumulator group 9 pressure oils and return line disconnect when connecing electricity, accumulator group pressure oil is communicated with total return pipe during outage, makes the emergency power supply switching control pilot.Two-position three way Solenoid ball valve 6 is a Normally closed type, be to be used for controlling the control valve that usefulness was opened or disconnected to return opening, Solenoid ball valve is opened when connecing electricity, the direct oil sump tank of oil return, Solenoid ball valve is closed during outage, the total return opening of system is closed, and can't flow into fuel tank, unless manually opened standby emergency bypass ball valve 13 (closing under bypass ball valve 13 nominal situations).An end-coil pressure oil of connecting arbitrary group or several groups solenoid directional control valve according to working condition requirement during work enters an end of oil cylinder through high-pressure rubber pipe, valve opening, and hydraulic oil is discharged from the oil cylinder the other end, flows back to fuel tank, realizes even quick-opening valve.Otherwise connect the other end coil oil cylinder withdrawal valve closing of solenoid directional control valve.

During faults such as system's power failure suddenly, two Solenoid ball valves are because dead electricity, wherein a Normally closed type ball valve 6 is closed cut-out automatically and is always answered back, another open type ball valve 7 is opened automatically, accumulator group 9 pressure oils and the three position four-way electromagnetic valve group oil return mouth of pipe are connected, utilized the oil-feed simultaneously of 3-position 4-way solenoid directional control valve meta J type function cylinder rod chamber and rodless cavity to form differential cylinder and stretch out the effect that plays automatic closed shutter automatically.

Claims

1. an automatic reset electro-hydraulic device is characterized in that, comprises motor, oil pump, fuel tank assembly parts, one-way valve, electromagnetic relief valve, 3-position 4-way solenoid directional control valve group, Pilot operated check valve, Solenoid ball valve, also comprises an accumulator group;

Accumulator group one interface is connected with the electromagnetic relief valve filler opening by an one-way valve;

Another interface of accumulator group is connected with the return opening of two-position three way Solenoid ball valve open in usual with 3-position 4-way solenoid directional control valve group by one-way valve, Pilot operated check valve.