CN205592438U - High temperature air throttle - Google Patents

Abstract

The utility model discloses a high temperature air throttle, including normally opening chamber, normal close chamber, the bottom surface of gas accuse switching -over valve is provided with normally opens chamber venthole, normal close chamber venthole, and the top surface of gas accuse switching -over valve is provided with inlet port, normal close chamber exhaust hole, normally opens chamber exhaust hole, normally opens the front end intercommunication in chamber and normal close chamber, inlet port and the front end intercommunication of normally opening the chamber, normal close chamber exhaust hole, normally open chamber exhaust hole and set up respectively in the normal close chamber and the rear end of normally opening the chamber, normal close chamber, the middle part of normally opening the chamber set up an opening, the opening respectively through the pipeline with normal close chamber venthole, normally open chamber venthole intercommunication, all be provided with corresponding control lever in normally opening chamber, normal close chamber, be provided with corresponding piston on the control lever, control lever connection control valve. The utility model discloses simple structure, effectively compressed air's the utilization ratio and the range of application of valve member have been improved.

Description

A kind of high temperature air throttle

Technical field

This utility model relates to pneumatic control components technical field, particularly relates to a kind of high temperature air throttle.

Background technology

The control system of cylinder necessarily includes directional control valve, and directional control valve is for controlling the motion side of cylinder To.Directional control valve of the prior art generally includes an air inlet, two ventholes, two steam vents, Two of which venthole connects with ante-chamber, the back cavity of cylinder respectively；Cylinder expellant gas passes through direction controlling Steam vent on valve drains in air.Connecting line is complicated, owing to the airflow direction in pipeline is repeatedly to change , the longest use to source of the gas of pipeline is the most；Compressed air in cylinder is immediately discharged to air and also result in one Fixed waste.And existing control valve member can't adapt to the application under hot environment.

Summary of the invention

This utility model can not use in high temperature environments for existing control valve member, compressed air utilization rate The highest problem, develops a kind of high temperature air throttle, is effectively increased compressed-air actuated utilization rate and controls valve member Range of application.

This utility model solves the technical scheme of technical problem: a kind of high temperature air throttle, including normally opened chamber, Normally closed chamber, the bottom surface of Pneumatic reversal valve is provided with normally opened chamber venthole, normally closed chamber venthole, Pneumatic reversal valve End face be provided with air inlet, normally closed chamber steam vent, normally opened chamber steam vent, the front end in normally opened chamber and normally closed chamber Connection, air inlet connects with the front end in normally opened chamber；Normally closed chamber steam vent, normally opened chamber steam vent are separately positioned on Normally closed chamber and the rear end in normally opened chamber；Normally closed chamber, the middle part in normally opened chamber arrange an opening, and opening is respectively by pipe Road connects with normally closed chamber venthole, normally opened chamber venthole；Described normally opened chamber, normally closed chamber are both provided with correspondence Control bar, control to be provided with on bar the piston of correspondence, control bar and connect control valve.

Described control valve is pilot valve.

Described high temperature air throttle also includes spring, and spring is arranged on control bar upper semisection, spring one end and work Plug contact, the other end contact with the end face of valve insertion body.

The profile of described piston is set to taper with the contact position of valve internal cavity.

The beneficial effects of the utility model:

1. this utility model simple in construction, be effectively increased the application model of compressed-air actuated utilization rate and valve member Enclose, by controlling the actions of two control bars, the piston rod of cylinder can be realized when stretching out, normally opened chamber and normally closed chamber Connecting with air inlet, now cylinder ante-chamber, cylinder back cavity connect and are simultaneously connected with source of the gas simultaneously, at this moment due to The piston active area of cylinder back cavity is big, and piston rod stretches out, and the compressed air of cylinder ante-chamber enters cylinder back cavity, After the piston rod of cylinder stretches out a segment distance, control bar, make the compressed air of cylinder ante-chamber directly arrange To air, the piston rod of cylinder is made to possess movement velocity and the dynamics of needs, on the basis of reaching work requirements Save compressed air.Valve body components and structure can bear high temperature, can the most normally transport OK.

2. control bar by pilot valve, reduce the requirement to source of the gas, saved source of the gas.

3. the return realized controlling bar by spring is controlled, and piston can be made to automatically return to initial position, improves The stability of device, is suitable to run in hot environment.

4. the contact position of piston Yu valve internal cavity is set to taper, improves the sealing of valve inner Energy and reliability of operation.

Accompanying drawing explanation

Fig. 1 is the rear view of this utility model Pneumatic reversal valve.

Fig. 2 is the left view of this utility model Pneumatic reversal valve.

Fig. 3 is the Fig. 2 sectional view along A-A direction.

Fig. 4 is the top view of this utility model Pneumatic reversal valve.

Fig. 5 is the Fig. 4 sectional view along C-C direction.

Fig. 6 is the Fig. 4 sectional view along B-B direction.

Detailed description of the invention

In order to be more fully understood that this utility model, explain in detail enforcement of the present utility model below in conjunction with the accompanying drawings Mode.

Fig. 1 to Fig. 6 is a kind of embodiment of the present utility model, as it can be seen, a kind of high temperature air throttle, bag Including normally opened chamber 701, normally closed chamber 702, the bottom surface of Pneumatic reversal valve is provided with normally opened chamber venthole 703, normally closed Chamber venthole 704, the end face of Pneumatic reversal valve is provided with air inlet 705, normally closed chamber steam vent 706, normally opened Chamber steam vent 707, normally opened chamber 701 connects with the front end in normally closed chamber 702, air inlet 705 and normally opened chamber 701 Front end connection；Normally closed chamber steam vent 706, normally opened chamber steam vent 707 are separately positioned on normally closed chamber 702 with often Begin to speak 701 rear end；Normally closed chamber 702, the middle part in normally opened chamber 701 arrange an opening, and opening is respectively by pipe Road connects with normally closed chamber venthole 704, normally opened chamber venthole 703；Described normally opened chamber 701, normally closed chamber 702 In be both provided with the control bar 708 of correspondence, control to be provided with on bar 708 piston of correspondence, control bar 708 even Connect control valve 709.Described control valve 709 is pilot valve.Described high temperature air throttle also includes spring 710, Spring 710 is arranged in control bar 708 upper semisection, spring 710 one end and piston contact, the other end and valve The end face contact of cavity.The profile of described piston is set to taper with the contact position of valve internal cavity.

During use, by controlling the actions of two control bars, the piston rod of cylinder can be realized when stretching out, normally opened chamber Connecting with air inlet with normally closed chamber, now cylinder ante-chamber, cylinder back cavity connect and are simultaneously connected with source of the gas simultaneously, At this moment big due to the piston active area of cylinder back cavity, piston rod stretches out, and the compressed air of cylinder ante-chamber enters Cylinder back cavity, after the piston rod of cylinder stretches out a segment distance, controls bar, makes the compression of cylinder ante-chamber Air is immediately discharged to air, makes the piston rod of cylinder possess movement velocity and the dynamics of needs, and reaching work needs Compressed air has been saved on the basis of asking.Valve body components and structure can bear high temperature, can be at high temperature ring Under border properly functioning.Control bar by pilot valve, reduce the requirement to source of the gas, saved source of the gas. The return realized controlling bar by spring is controlled, and piston can be made to automatically return to initial position, improve device Stability, be suitable to hot environment run.The contact position of piston Yu valve internal cavity is set to taper, Improve sealing property and the reliability of operation of valve inner.

Although the detailed description of the invention of utility model is described by the above-mentioned accompanying drawing that combines, but not to this reality With the restriction of novel protected scope, on the basis of the technical solution of the utility model, those skilled in the art Need not to pay various amendments or deformation that creative work can make still at protection domain of the present utility model Within.

Claims (4)

1. a high temperature air throttle, it is characterised in that: include normally opened chamber (701), normally closed chamber (702), The bottom surface of Pneumatic reversal valve is provided with normally opened chamber venthole (703), normally closed chamber venthole (704), gas control The end face of reversal valve is provided with air inlet (705), normally closed chamber steam vent (706), normally opened chamber steam vent (707), Normally opened chamber (701) connects with the front end of normally closed chamber (702), air inlet (705) and normally opened chamber (701) Front end connection；Normally closed chamber steam vent (706), normally opened chamber steam vent (707) are separately positioned on normally closed chamber (702) with the rear end in normally opened chamber (701)；Normally closed chamber (702), the middle part of normally opened chamber (701) are arranged One opening, opening is respectively by pipeline with normally closed chamber venthole (704), normally opened chamber venthole (703) even Logical；Described normally opened chamber (701), normally closed chamber (702) are both provided with the control bar (708) of correspondence, control It is provided with the piston of correspondence on bar processed (708), controls bar (708) and connect control valve (709).

2. a kind of high temperature air throttle as claimed in claim 1, is characterized in that, described control valve (709) For pilot valve.

3. a kind of high temperature air throttle as claimed in claim 1, is characterized in that, described high temperature air throttle is also Including spring (710), spring (710) is arranged on control bar (708) upper semisection, spring (710) End contacts with the end face of valve insertion body with piston contact, the other end.

4. high temperature air throttle as claimed in claim 1 a kind of, is characterized in that, the profile of described piston with The contact position of valve internal cavity is set to taper.