CN2517933Y

CN2517933Y - Energy elimination check valve

Info

Publication number: CN2517933Y
Application number: CN 01252446
Authority: CN
Inventors: 任育才
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-11-15
Filing date: 2001-11-15
Publication date: 2002-10-23
Anticipated expiration: 2011-11-15

Abstract

The utility model relates to an energy dissipating inverted valve which aims to prevent the abuse caused by inverse flow of liquid in a water feed and drain pipeline. The utility model comprises a valve body, a valve plate, a valve ball, and a guide rail mechanism and is characterized in that an energy dissipating device which can reduce the effect of the liquid inverse flow is arranged on the valve plate. The utility model can solve the problem produced by the inverse flow of the liquid such as water hammer, noise, and water head loss, etc.

Description

The energy dissipating safety check

Technical field

The utility model relates to valve used on the water supply and sewerage pipeline, the particularly a kind of energy dissipating safety check that can cut down adverse effect that liquid return causes.

Background technique

At present, used safety check mainly contains rotary-open type and slow-closing butterfly type on the water supply and sewerage pipeline.The vibrating noise that the former can not eliminate the generation of water hammer fully and produce when closing.The latter also can't extensively promote with costing an arm and a leg because of mechanism is complicated.

Summary of the invention

The purpose of this utility model is to provide a kind of energy dissipating safety check that can eliminate adverse effect that liquid return is made, thereby solves the problems such as water hammer, noise and loss of head because of liquid return produced.

In order to realize the purpose of this utility model, intend taking following technological scheme:

It includes valve body, valve plate, valve ball and guide rail mechanism thereof, and unique distinction is:

On valve plate 1, also be provided with the energy dissipator 20 that to eliminate the withdrawing fluid adverse effect.

Above-mentioned energy dissipator 20, its valve seat 16 1 ends are located on the valve plate 1, are provided with valve block 19 and spring 18 in the valve seat 16, are provided with in valve seat 16 the other ends to regulate bolt 17, have discharge orifice d3 on the valve seat sidewall.

Advantage of the present utility model is simple in structure, and is reasonable in design, makes easily, with low cost.Range ability by the energy dissipator in it 20 and strict control valve ball 8,9 and valve plate 1 all can be cut down water hammer and noise that liquid return produces with the shortest time throttle down.It presses the fluid mechanics appropriate design, is curve connection as circular ball valve 8,9 with relevant runner parts such as valve plate 1 flowing holes, makes it can reduce ducted loss of head.

Description of drawings

Fig. 1 is an overall structure schematic representation of the present utility model.

Fig. 2 is the plane structure schematic representation of valve plate 1 among Fig. 1.

Fig. 3 is the structure enlarged view of energy dissipator 20 among Fig. 1.

Embodiment

The disclosed structure of above accompanying drawing is an embodiment of the present utility model.Among the figure, 1 for being welded on the valve plate on the valve body, has on it discharge orifice, is convenient to be provided with valve ball 8,9 and energy dissipator 20; 2 is the flange plate that joins with valve plate 1; 3 is the flange plate that joins with external pipe; 4-7 is a valve outer wall structure part, and wherein 4,6,7 is short tube, and 5 is reducer; 8 is the valve ball corresponding with hole d1; 9 is the valve ball (8) of hole d2 correspondence, and the two is the keying parts of valve; 10 is big trim ring; 11 is little trim ring; 12 is the guide rail bar; 13 is lead rail axis; 14 is nut; 15 is the packing ring of nut below, constitutes the valve ball guide rail mechanism with upper-part 10-15; 16 is passive valve seat, has 4 discharge orifice d3 on it; 17 are pressure adjusting bolt; 18 is pressure control spring; 19 are the valve block that blocks water; 20 for to constitute energy dissipator by parts 16-19.

During proper functioning, pressured fluid through valve plate hole d1, d2, is walked around valve ball 8,9 by inlet to the utility model in pipeline, arrives outlet.After the loss of power accident took place, flowing backwards can appear in liquid, makes its valve ball 8,9 get back to valve plate hole d1, d2 place rapidly, and with valve closing, this moment, water hammer did not form as yet.Along with the enhancing of backflow ripple, highly pressurised liquid will enter in the valve seat 16 of energy dissipator, sets limiting value if pressure surpasses, and liquid will press off valve block 19, makes highly pressurised liquid let out back I district (see figure 3) by hole d3.Water hammer is just eliminated automatically like this.When II district pressure was lower than setting value, the valve block 19 of energy dissipator can be closed energy dissipator automatically by the effect of spring 18.

Claims

1, a kind of energy dissipating safety check includes valve body, valve plate, valve ball and guide rail mechanism thereof, it is characterized in that: also be provided with the energy dissipator (20) that can eliminate the withdrawing fluid adverse effect on valve plate (1).

2, energy dissipating safety check according to claim 1, it is characterized in that: above-mentioned energy dissipator (20), its valve seat (16) one ends are located on the valve plate (1), be provided with valve block (19) and spring (18) in the valve seat (16), be provided with in valve seat (16) the other end and regulate bolt (17), have discharge orifice d3 on the valve seat sidewall.