CN203656337U

CN203656337U - Combined valve execution device

Info

Publication number: CN203656337U
Application number: CN201320827076.2U
Authority: CN
Inventors: 黄很
Original assignee: Wengfu Group Co Ltd
Current assignee: Wengfu Group Co Ltd
Priority date: 2013-12-11
Filing date: 2013-12-11
Publication date: 2014-06-18
Anticipated expiration: 2023-12-11

Abstract

The utility model discloses a combined valve execution device. The combined valve execution device comprises an air cylinder sleeve, a piston, a gland, a push rod and a drive frame. One end face of the push rod is connected with the piston, and the other end of the push rod is movably assembled into a hole in the top of the gland. The lower end of the gland is connected with the air cylinder sleeve. The piston is arranged in the air cylinder sleeve. A compression spring is arranged on the push rod, the upper end of the compression spring is fixed to the inner wall of the gland, and the lower end of the compression spring is fixed to the piston. The drive frame is arranged on the periphery of the air cylinder sleeve and gland, the upper end of the drive frame is connected with the push rod, and the lower end of the drive frame is connected with a valve rod. The valve rod is connected with a pipeline valve core. An air pipe is arranged on the lower end face of the air cylinder sleeve. According to the combined valve execution device, because neither clearance fit nor sealing between the push rod and the air cylinder sleeve is required, working efficiency of the air-to-open adjustment valve execution mechanism is improved, faults caused by poor airtightness of the execution device are reduced, and the service life of a pneumatic single-seat valve is prolonged.

Description

A kind of combined valve actuating device

Technical field

The utility model relates to combined valve and carries out machine.

Background technique

The structure majority of the single seat gas force open type combined valve actuating device now using is the top mounting spring of piston, bottom is that piston connects valve rod package assembly form, its working principle is in the time of original state, the original position of valve is by the spring extruding on top, the piston that valve rod connects seals spool and valve seat, causes valve closing, the circulation of cut-off medium, in the time that needs are opened valve, the active force that the piston of bottom overcomes upper springs in the Driving force of inlet air source is worked.

Former valve is carried out machine in valve event, and the face of trend up and down of valve rod and cylinder liner pilot hole need to be sealed and matched, just can regular event, and like this, existing actuating device is high to seal request, fragile, and working life is low, and regular maintenance difficulty.

Summary of the invention

For the deficiencies in the prior art part, the utility model aims to provide a kind of combined valve actuating device, guarantees that the valve rod of actuating device and cylinder liner, without sealing surface requirement, improve the working life of combined valve actuating device.

The technical solution adopted in the utility model: a kind of combined valve actuating device, comprise cylinder liner, piston, gland, push rod, driver framework, one end face of push rod connects with piston, the other end activity of push rod is assemblied in the hole at gland top, gland lower end connects cylinder liner, Piston assembling is in cylinder liner, on push rod, be equipped with Compress Spring, gland top inner wall is fixed in Compress Spring upper end, Compress Spring lower end is fixed on piston, in cylinder liner and gland periphery, driver framework is set, driver framework upper end connects with push rod, driver framework lower end connects with valve rod, valve rod connecting pipe spool, on cylinder liner lower end surface, be also provided with tracheae.

Adopt technique scheme, when passing into pressurized air in tracheae, pressurized air promotes piston and moves upward, piston actuated push rod moves up, and push rod drives driver framework to move up, and moving driver framework band ovable valve stem moves up, combined valve is opened, when discharging pressurized air in tracheae, piston drives and moves down at Compress Spring, and combined valve is closed.

This device has reduced between original valve actuator push rod and cylinder liner and coordinates seal ring need to be installed, make to coordinate requirement without moving between push rod and cylinder liner, do not need sealing, better improve the working efficiency of gas force open type regulating-valve actuator, and reduce the fault that actuating device causes due to tightness, with this, do not need the maintenance of actuating device sealing surface, improve the working life of Pneumatic single-seat valve.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation;

In accompanying drawing: 1 cylinder liner 2 piston 3 Compress Spring 4 gland 5 driver framework 6 push rod 7 valve rod 8 spool 9 tracheaes.

Embodiment

As shown in Figure 1, a kind of combined valve actuating device, comprise cylinder liner 1, piston 2, gland 4, push rod 6, driver framework 5, one end face of push rod 6 connects with piston 2, the other end activity of push rod 6 is assemblied in the hole at gland 4 tops, be that push rod 6 can move by easy on and off in the hole at gland 4 tops, gland 4 lower ends connect cylinder liner 1, piston 2 is assemblied in cylinder liner 1, on push rod 6, be equipped with Compress Spring 3, gland 4 top inner wall are fixed in Compress Spring 3 upper ends, Compress Spring 3 lower ends are fixed on piston 2, Compress Spring 3 plays reset role, in cylinder liner 1 and gland 4 peripheries, driver framework 5 is set, driver framework 5 upper ends connect with push rod, driver framework 5 lower ends connect with valve rod 7, valve rod 7 connecting pipe spools 8, on cylinder liner 1 lower end surface, be also provided with tracheae 9, tracheae 9 is connected cylinder liner 1 inner chamber, like this, in the time that tracheae 9 passes into pressurized air, piston 2 promotes push rod 6 and moves up, push rod 6 is with ovable valve stem 7 to move up, cause spool 8 to move up, pipeline valve is opened, in the time that tracheae 9 is discharged in cylinder liner 1 air, spool 8 moves down, pipeline valve cuts out.

Claims

1. a combined valve actuating device, comprise cylinder liner (1), piston (2), gland (4), push rod (6), driver framework (5), it is characterized in that: an end face of push rod (6) connects with piston (2), the other end activity of push rod (6) is assemblied in the hole at gland (4) top, gland (4) lower end connects cylinder liner (1), piston (2) is assemblied in cylinder liner (1), on push rod (6), be equipped with Compress Spring (3), gland (4) top inner wall is fixed in Compress Spring (3) upper end, Compress Spring 3 lower ends are fixed on piston (2), in cylinder liner (1) and gland (4) periphery, driver framework (5) is set, driver framework (5) upper end connects with push rod, driver framework (5) lower end connects with valve rod (7), valve rod (7) connecting pipe spool (8), on cylinder liner (1) lower end surface, be also provided with tracheae (9).