CN2278123Y

CN2278123Y - Check vavle for fire fighting

Info

Publication number: CN2278123Y
Application number: CN 96247547
Authority: CN
Inventors: 唐隆华
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-12-05
Filing date: 1996-12-05
Publication date: 1998-04-08
Anticipated expiration: 2006-12-05

Abstract

The utility model discloses a check valve for fire fighting, which comprises a piston valve 1, a sleeve ring 2, a water stop sheet rubber 3, a duct 4, a buffer 5, a spring 6, an inspection hole 7, etc. The inspection hole 7 is arranged in the middle part of the utility model, a thread is arranged at a water outlet 8 of the utility model, the upper part of the buffer 5 is a threaded portion, and the lower part is a horn-shaped body 9. The duct 4 and the spring 6 are added at the upper part of the piston valve 1, a guide pillar 10 is added at the lower part, the horn-shaped body can absorb and relieve the pressure caused by instantly stopping flowing water in the utility model. The piston valve can be sealed at the water inlet part with pressure sealing of the spring, the guide pillar at the lower part can limit the piston valve to only vertically slide, so the utility model can be horizontally or vertically arranged in pipelines according to requirements. The middle part of the utility model is provided with the inspection hole so as to maintain at any moment.

Description

A kind of fire-fighting check valve

The utility model relates to a kind of fire-fighting check valve.

Fire-fighting check valve commonly used comprises stud shaft, piston valve, the collar, watertight rubber sheet etc., be to establish a piston valve with the stud shaft bolt to cover on the discharge orifice, be provided with the collar of water injection hole in the flowing water peritreme, this check valve is the weight sealing discharge orifice that utilizes piston valve, can't laterally install, and can't eliminate the pressure that moment causes when closing current, be prone to water leakage phenomenon.

The utility model be intended to propose a kind of can be laterally, the vertical installation, can reduce the instantaneous water flowing pressure, the fire-fighting check valve that can overhaul at any time.

The fire-fighting check valve that the table model utility proposes, comprise piston valve, the collar, watertight rubber sheet, conduit, buffer, spring and access opening etc., it is characterized in that offering access opening at the check valve middle part, the place offers screw thread at the check valve water outlet, buffer top is helical thread portion, the bottom is horn-like body, sets up conduit and spring on piston valve top, and guide pillar is set up in the bottom.

Because the fire-fighting check valve that the utility model proposes, its buffer top is helical thread portion, and the bottom is horn-like body, is connected check valve water outlet place, and horn-like body can absorb dissolves the pressure that causes when moment stops flowing water in the valve, is unlikely water leakage phenomenon to occur; Set up conduit and spring on piston valve top, guide pillar is set up in the bottom, piston valve is subjected to the pressure seal of spring in the water inlet, but the guide pillar limited piston valve of bottom is only done and is slided up and down, can not tilt to block, can laterally or vertically be installed in the pipeline as required so plant the fire-fighting check valve: owing to offer access opening at the check valve middle part, piston valve be to utilize to be threaded, so can overhaul at any time, change easily damaged parts.

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

Fig. 1 is the utility model embodiment three-dimensional exploded view;

Fig. 2 is the utility model embodiment stereogram.

With reference to Fig. 1, Fig. 2, the fire-fighting check valve that the utility model proposes, comprise piston valve 1, the collar 2, watertight rubber sheet 3, conduit 4, buffer 5, spring 6 and access opening 7 etc., it is characterized in that offering access opening 7 at the check valve middle part, 8 places offer screw thread at the check valve water outlet, buffer 5 tops are helical thread portion, the bottom is horn-like body 9, set up conduit 4 and spring 6 on piston valve 1 top, guide pillar 10 is set up in the bottom, because its buffer 5 tops are helical thread portion, the bottom is horn-like body 9, be connected check valve water outlet 8 places, horn-like body 9 can absorb dissolves the pressure that causes when moment stops flowing water in the valve, is unlikely water leakage phenomenon to occur; Set up conduit 4 and spring 6 on piston valve 1 top, guide pillar 10 is set up in the bottom, piston valve 1 is subjected to the pressure seal of spring 6 in the water inlet, but the guide pillar 10 limited piston valves of bottom are only done and are slided up and down, can not tilt to block, can laterally or vertically be installed in the pipeline as required so plant the fire-fighting check valve; Owing to offer access opening 7 at the check valve middle part, piston valve 1 is to utilize to be threaded, so can overhaul at any time, changes easily damaged parts.

Claims

1, a kind of fire-fighting check valve, comprise piston valve (1), the collar (2), watertight rubber sheet (3), conduit (4), buffer (5), spring (6) and access opening (7) etc., it is characterized in that offering access opening (7) at the check valve middle part locates to offer screw thread at check valve water outlet (8), buffer (5) top is helical thread portion, the bottom is horn-like body (9), set up conduit (4) and spring (6) on piston valve (1) top, guide pillar (10) is set up in the bottom.