CN2604199Y

CN2604199Y - Fire hydrant with rotary body

Info

Publication number: CN2604199Y
Application number: CN 02294084
Authority: CN
Inventors: 牟金泉; 杨文焕
Original assignee: PUHUI ELECTROMECHANICAL TECHNOLOGY DEVETOPMENT Co HAIDIAN DISTRICT BEIJING
Current assignee: PUHUI ELECTROMECHANICAL TECHNOLOGY DEVETOPMENT Co HAIDIAN DISTRICT BEIJING
Priority date: 2002-12-26
Filing date: 2002-12-26
Publication date: 2004-02-25
Anticipated expiration: 2012-12-26

Abstract

The utility model relates to a fire hydrant with rotatable suppository body. A rotation device at the bottom of the suppository body comprises a valve seat, a ball, a seal ring and a base. It is characterized in that the valve seat is inserted into a via at the bottom of the suppository body. A chute is provided on the inner side of the via and outside ring of the valve seat which is coincidence with each other. The ball is disposed in the chute. A seal groove is disposed on the outside ring of the valve seat. The seal ring is arranged in the seal groove to ensure the effective sealness between the valve seat and a valve body. The lower half part of the valve seat is thread connected by combining to the base, so the fire hydrant with rotatable suppository body is composed.

Description

The rotatable fire hydrant of a kind of key

Technical field

The utility model relates to a kind of fire-fighting fire hydrant, particularly relates to the rotatable fire hydrant of a kind of key.

Background technology

At present, the rotational structure of known rotary-type fire hydrant or rotation decompression voltage stabilizing fire hydrant roughly is divided into two types, a kind of valve seat that is whirligig by the key bottom, base and ball, formations such as sealing ring, the applicant once disclosed a kind of " rotatable fire hydrant " utility model patent (patent No.: 022331794) just belong to this structure at Chinese patent, there is the outer shroud of a projection upper end in the valve seat outside in this structure, the upper end of key bottom through-hole has constituted ball slideway by the cannelure that an internal diameter is slightly larger than the valve seat outer shroud, ball is placed between ball slideway and the valve seat outer shroud bottom surface, sealing ring places on the medial surface of the side of valve seat outer shroud and key bottom annular recess, valve seat is connected for deciding together with base, so when being implemented in sealing key relatively valve seat rotate together with base, its defective is the more difficult high accuracy processing of the circular trough internal diameter of key bottom through-hole upper end, be difficult to satisfy sealing and with the requirement of through hole concentricity, working (machining) efficiency is low, cost increases, if on the key bottom through-hole, cancel cannelure, so only process through hole and just be easy to many.The another kind of structure of rotary-type fire hydrant is below common fire hydrant valve seat, a bottom outlet is arranged at the key bottom, sidecar has sliding channel in the bottom outlet, in bottom outlet, insert a base, sliding channel is also arranged on the cylindrical of base, it with the key bottom outlet in sliding channel overlap, ball is installed in it, between base cylindrical and key bottom outlet, sealing ring is housed also, also can realize the rotation of the relative base of key: defective is when fire hydrant time spent not at ordinary times, flap can be closed valve seat, but be positioned at the rotatory sealing and the sliding position of valve seat below, be subjected to the crowded of the higher hydraulic pressure of pipe network all the time, sealing device is very easily impaired to cause leakage.

Summary of the invention

At above problem, the utility model provides a kind of key rotatable, at ordinary times not the time spent rotary seal structure be not subjected to influence of hydraulic pressure, simple structure, high reliability is convenient to large quantities of processings, cheap rotation fire hydrant.

Technical solution adopted in the utility model:

The utlity model has handwheel, stopper, adjusting rod, flap and key, the bottom of key has the whirligig that is made of valve seat, ball, sealing ring and base, one through hole is arranged at the bottom that it is characterized in that key, there is a chute at the middle part of through hole inboard, the outside of key bottom has an installing hole and chute to connect, and installing hole is used for placing ball in chute; The center of valve seat is the current through hole, and the valve seat cylindrical first half has sealed groove and chute, and sealed groove is positioned at the top of chute, and the Lower Half in the valve seat outside is an external screw thread; The valve seat of suit sealing ring in the sealed groove is inserted the key bottom through-hole, chute in chute and the key through hole on the valve seat is overlapped, thereby constitute a complete ball slideway, ball can be packed in the slideway by the installing hole on the key, can be with pin with the installing hole shutoff, ball has the flexibility of revolution of enhancing and makes valve seat be connected spacing function with key; The center of base also is a through hole, and the first half car of through hole has the internal thread that cooperates with the valve seat external screw thread, base is connected with valve seat, and adorns a sealing ring at the externally threaded root of valve seat, or smear fluid sealant on screw thread, and the assurance junction can not leaked.

Can above or below valve seat cylindrical chute, increase a sealed groove and sealing ring again, improve the reliability of sealing.

Sealed groove and sealing ring can be arranged on the top of the chute in the key bottom through-hole.

When being arranged on sealed groove and sealing ring in the key bottom through-hole, can also above or below the chute in the key bottom through-hole, increase a sealed groove and a sealing ring again.

Description of drawings

Accompanying drawing: the example structure figure of the rotatable fire hydrant of a kind of key.

In the accompanying drawing: (1) base, (2) valve seat, (3) pin, (4) key, (5) flap, (6) go up sealing ring, (7) ball, (8) lower seal.

The specific embodiment

The rotatable fire hydrant of key as shown in drawings, the whirligig of key bottom is realized as follows: with key (4) bottom processing one through hole of casting, car system chute in middle part in the through hole, the installing hole that brill one and chute connect on key (4); Make a valve seat (2), there is a through hole at the center of valve seat (2), the cylindrical side car of valve seat (2) has two sealed grooves and a chute, chute is between two sealed grooves, respectively put a sealing ring (6) and (8) in each sealed groove, the Lower Half car of valve seat (2) has external screw thread; Make a base (1) again, center car one through hole of base (1), the first half car of through hole have the internal thread with valve seat (2) external screw thread coupling, internal thread that links to each other with water inlet pipe of Lower Half car; Valve seat (2) is inserted in the through hole of key (4) bottom together with cover sealing ring (6) and (8) thereon, chute in chute and key (4) bottom through-hole on the valve seat (2) is just overlapped, constitute a ball slideway, installing hole from key is positioned over ball in the ball slideway, with a pin (3) with the installing hole shutoff; On valve seat (2) external screw thread, smear fluid sealant, base (1) is connected on valve seat (2) screw thread, can guarantee that the junction can not leak.The parts such as handwheel, adjusting rod, flap, stopper and interface identical with common fire hydrant packed into successively, thereby constituted a rotatable fire hydrant of complete key.Its operation principle is: the opening and closing device that has constituted fire hydrant by the upper port and the flap (5) of valve seat (2), when flap (5) when closing, current can not enter in the key (4), sealing ring (6) and (8) and ball (4) are in anhydrous state, fire hydrant sealing ring and ball (4) when long-term idle can not damaged, improved the reliability of device; When flap (5) was opened, when fire hydrant was in opening, current can be from valve seat (2) water; The current through hole enters key (4), because sealing ring (6) and (8) sealing are arranged between key (4) and valve seat (2), can guarantee can not leak when key (4) rotates arbitrarily under connected water band traction.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model simple modification, equivalent variations and modification that above embodiment did.

The utlity model has following characteristics:

1. adopt this technical scheme of the described whirligig of the utility model, solved the technology difficulty of processing, improve working (machining) efficiency, reduce cost, be suitable for batch production and produce in enormous quantities.Also accomplished simultaneously fire hydrant for a long time not the time spent rotary seal structure be not subjected to influence of hydraulic pressure, sealing ring is difficult for impaired, product is difficult for leaking.

2. the utility model is not only realized the rotatable of common fire hydrant key, when the decompression stable-pressure device of key inside or delivery port and multiple structure mates, the key of fire hydrant that can also realize having decompression is rotatable, therefore, the utlity model has higher expansion and practicality, market prospects are wide.

Claims

1. rotatable fire hydrant of key, the whirligig of key bottom is to be made of valve seat, ball, sealing ring and base, and it is characterized in that: a through hole is arranged at the bottom of key, and there is a chute through hole inboard, the outside of key bottom has an installing hole and chute to connect, and a pin is arranged in the installing hole; In the key through hole, valve seat is housed, the center of valve seat is the current through hole, the top of valve seat cylindrical is provided with sealed groove and chute, sealed groove is positioned at the top of chute, chute in chute on the valve seat and the key through hole overlaps, ball is housed therebetween, sealing ring is housed in sealed groove, the Lower Half of valve seat has external screw thread; The center of base also is a through hole, and the first half car of through hole has the internal thread that cooperates with the valve seat external screw thread; Base is connected in the bottom of valve seat, and a sealing ring is arranged in the junction or scribble fluid sealant on screw thread.

2. the rotatable fire hydrant of key according to claim 1 is characterized in that setting up a sealed groove and a sealing ring again above or below valve seat cylindrical chute.

3. the rotatable fire hydrant of key according to claim 1 is characterized in that sealed groove and sealing ring can being arranged in the through hole of key bottom, the top of chute.

4. the rotatable fire hydrant of key according to claim 3 is characterized in that setting up a sealed groove and a sealing ring again above or below the chute in the key bottom through-hole.