CN204985890U

CN204985890U - Release valve

Info

Publication number: CN204985890U
Application number: CN201520641491.8U
Authority: CN
Inventors: 陈方明
Original assignee: Kuai Da Fire-Fighting Technology Co Ltd
Current assignee: Kuai Da Fire-Fighting Technology Co Ltd
Priority date: 2015-08-20
Filing date: 2015-08-20
Publication date: 2016-01-20
Anticipated expiration: 2025-08-20

Abstract

The utility model provides a release valve, adopts pressurization drive RAM structure, belongs to fire control control field, by: ejector pin, nut, piston, valve body, main shaft, sealed pad, box nut, output joint, O type circle, spring, drive sub, handle are constituteed, sealed pad inlays to be adorned in the box nut recess, screws up in the main shaft end, and O type snare is in main shaft, piston excircle recess, and the main shaft is screwed up through the screw thread with the piston, installs at the valve body downtheholely, the spring housing is between valve body and piston, and the nut is screwed in the valve body top, and the ejector pin is filled in in the nut, and the handle revolves at the ejector pin head, adopt pressurize drive, spring homing's action mechanism, the spring top pushes away the piston at ordinary times, makes sealed the pad and body seals bulge loop contact seal, during the action, will drive the medium and cause the piston upside, the sealed pad is opened under the piston action, release drive medium is closed by the spring force effect, solved the solenoid valve at the fire control water source mistake when undulant open, realized by low effect of calming the anger the control water under high pressure, has extensive application prospect in electric power, metallurgy, subway, tunnel.

Description

Relief valve

Technical field

The utility model relates to a kind of in water spray, fine water mist fire-extinguishing system, by pneumatic, Non-follow control, make fire water supply one direction flow into the relief valve of fire-fighting main control valve, adopt pressurised driving piston structure, adopt the action mechanism of pressurised driving, spring reset, belong to fire-fighting control field.

Background technique

Current relief valve, adopts solenoid valve or manual ball valve.When fire water supply fluctuates, solenoid valve is pushed open by peak pulse often, and opening by mistake when causing non-fire opens the accident of spurting, and impact just produces, causes serious water damage.Manual ball valve does not possess automatic control function and remote-controlled operation function, at large-scale zone of protections such as metallurgy, electric power, petrochemical industry, tunnel, subways, the place that fire water supply shares, troublesome maintenance, misoperation is spurted and is often occurred, and causes unnecessary economic loss.

Summary of the invention

In order to solve the misoperation control accident of solenoid valve, realizing pneumatic/manual and controlling; The utility model provides a kind of relief valve, and rated working pressure reaches 2.5MPa; Adopt the action mechanism of pressurised driving, spring reset; By: push rod (1), nut (2), piston (3), valve body (4), main shaft (5), sealing gasket (6), cap nut (7), out splice going splice (8), O type circle (9), spring (10), drive sub (11), handle (12) form.Sealing gasket is flush-mounted in cap nut groove, is tightened against main shaft end, and O type snare is in main shaft, outside piston groove, and main shaft and piston, by screwed tight, are arranged in valve body hole; Spring housing is between valve body and piston, and nut is in body top, and push rod plug is in nut, and handle is spun on push rod head; Spring push piston at ordinary times, makes sealing gasket contact with valve seal bulge loop and seals, isolation fire water supply; During action, driven medium caused on the upside of piston, sealing gasket is opened under piston action; Release driven medium, sealing gasket is closed by spring-force driven dual.

The utility model is achieved in that and is made up of push rod, nut, piston, valve body, main shaft, sealing gasket, cap nut, out splice going splice, O type circle, spring, drive sub, handle.Sealing gasket is flush-mounted in cap nut groove, is tightened against main shaft end, and O type snare is in main shaft, outside piston groove, and main shaft and piston, by screwed tight, are arranged in valve body hole; Spring housing is between valve body and piston, and nut is in body top, and push rod plug is in nut, and handle is spun on push rod head; Spring push piston at ordinary times, makes sealing gasket contact with valve seal bulge loop and seals; During action, driven medium caused on the upside of piston, sealing gasket is opened under piston action; Release driven medium, sealing gasket is closed by spring-force driven dual.

The beneficial effects of the utility model are: relief valve is when the big ups and downs of fire water supply pressure, sealing state can be remained, avoid seepage, open by mistake and open, decrease maintenance work amount, reach remote control function, improve rated working pressure, achieve the effect being controlled high pressure water by low pressure gas.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is sectional drawing of the present utility model.

Fig. 2 is the valve body sectional drawing in model utility.

Fig. 3 is the main shaft sectional drawing in the utility model.

Fig. 4 is the cap nut sectional drawing in the utility model.

Embodiment

Sealing gasket is flush-mounted in cap nut groove, is tightened against main shaft end, and O type snare is in main shaft, outside piston groove, and main shaft and piston, by screwed tight, are arranged in valve body hole; Spring housing is between valve body and piston, and nut, in body top, is sealed by O type circle; Push rod plug is in nut, and sealed by O type circle, push rod head inserts in piston counterbore; Handle is spun on push rod head; Drive sub is welded on valve body and drives mouth place, and out splice going splice is welded on valve body equipped at outlet port; Adopt the action mechanism of pressurised driving, spring reset, spring push piston at ordinary times, makes sealing gasket contact with valve seal bulge loop and seals, isolation fire water supply; During action, cause on the upside of piston by driven medium from driving interface, sealing gasket is opened under piston action, or press lower handle, sealing gasket is opened, and the space of fire water supply through the gap between sealing gasket and valve seal bulge loop, between main shaft and valve body, flows out from out splice going splice internal channel; Release driven medium, sealing gasket closes sealing by spring-force driven dual, isolation fire water supply.Inside the import screw thread of valve body, design machined sealing bulge loop, and stage casing machined vent, avoids piston to suppress resistance, top machined the screw thread with nut screw connection, center is spindle hole, piston hole, and spindle hole and piston hole keep concentric, and holes sectional area ratio is 3.5: 1.The center of cap nut is the screw coordinated with main shaft, end face is the groove of setting-in sealing gasket, and groove plane is provided with sealing groove, makes sealing gasket bear high pressure water flow strikes and not get loose, Excircle machining flat filament, is convenient to handling.The technical scheme in the invention for solving the technical problem is: by adopting the action mechanism of pressurised driving, spring reset, achieve pneumatic/hand to control by starting, solve the accident that solenoid valve misoperation is spurted, decrease maintenance workload, achieve the effect being controlled high pressure water by low pressure gas.

1) material: push rod, nut, piston, valve body, main shaft, cap nut, out splice going splice, drive sub, spring adopt 316 stainless steels, piston adopts aluminium bronze, and O type circle and sealing gasket adopt nitrile butadiene rubber, handle to adopt engineering nylon.

2) rated working pressure: 2.5MPa.

3) valve body hydraulic pressure intensity: 5.0MPa, non-leakage, indeformable.

4) opening time :≤10S; Reset shut-in time :≤5S.

5) driven medium: air, nitrogen.

6) driving pressure :≤1.0MPa.

Claims

1. a relief valve, it is characterized in that adopting pressurised driving piston structure, by pneumatic, Non-follow control, make fire water supply enter main control valve, relief valve by: push rod (1), nut (2), piston (3), valve body (4), main shaft (5), sealing gasket (6), cap nut (7), out splice going splice (8), O type circle (9), spring (10), drive sub (11), handle (12) form; Sealing gasket is flush-mounted in cap nut groove, is tightened against main shaft end, and O type snare is in main shaft, outside piston groove, and main shaft and piston, by screwed tight, are arranged in valve body hole; Spring housing is between valve body and piston, and nut is in body top, and push rod plug is in nut, and handle is spun on push rod head; Spring push piston at ordinary times, makes sealing gasket contact with valve seal bulge loop and seals; During action, driven medium caused on the upside of piston, sealing gasket is opened under piston action; Release driven medium, is closed by spring-force driven dual.

2. relief valve according to claim 1, is characterized in that valve body, and devise sealing bulge loop inside import screw thread, stage casing machined vent, and top machined the screw thread with nut screw connection, and center is spindle hole, piston hole.

3. relief valve according to claim 1, is characterized in that cap nut, and center is the screw coordinated with main shaft, end face is the groove of setting-in sealing gasket, and groove plane is provided with sealing groove, Excircle machining flat filament.