CN2416308Y

CN2416308Y - Horizontal & vertical two-purpose silient check valve

Info

Publication number: CN2416308Y
Application number: CN 00226289
Authority: CN
Inventors: 管云初
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-12
Filing date: 2000-04-12
Publication date: 2001-01-24
Anticipated expiration: 2010-04-12

Abstract

The utility model belongs to a check valve for pipelines, and particularly relates to a silence check valve with horizontal and vertical two purposes for pipelines. The utility model comprises a valve body, a valve seat, a sealing ring, a valve clack and a spring. The utility model is characterized in that the valve body is fixedly connected with a flow guide body; an inner cavity of the flow guide cavity is connected with a guide shaft; the interior of the guide shaft is sheathed with a valve clack; the valve clack is sheathed with a spring; the valve seat is provided with a sealing ring; the sealing ring is pressed with a fixed ring; the fixed ring is fixed on the valve body. The utility model has the advantages of small internal resistance, low noise, and long service life.

Description

Upright double-purpose DRV crouches

The utility model belongs to a kind of pipeline safety check, particularly founds the double-purpose DRV with crouching about pipeline.

Original pipeline safety check is slat belt and lifting structure, these structures easily produce water hammer when liquid speed is big, time one is long bigger to the pipeline equipment infringement, the utility model patent that 98232441.3 of the patent No.s are called the horizontal-vertical double-purpose safety check discloses a kind of safety check of eliminating the water hammer horizontal-vertical double-purpose, but there is the gate upright of pressure to be pressed on the seal ring on its structure, so just cause the interior flow resistance of valve chamber big, produce unnecessary pressure and noise; And more foreign material are arranged in the pipeline circulation vector, and as the chemical reaction of media and pipeline, hot water produces iron rust in steel pipe, and water dirt that the production boiler produces or the like foreign material are by flowing of media.Former safety check has the pressure gate upright, and the gap of flap and pressure gate upright is very little, is easy to cause flap and pressure gate upright or seal ring gap to be blocked by assorted dirt, makes the leakage of flap and seal ring damage threshold.

The purpose of this utility model is: a kind of upright double-purpose DRV that crouches is provided, and its internal resistance is little, and noise is little, long service life.

The technical solution of the utility model is: design a kind of upright double-purpose DRV that crouches, it improves on the product basis of the former patent No. 98232441.3, it comprises that valve body, valve seat, seal ring, flap, spring constitute, it is characterized in that: be fixedly connected with deflector on the valve body, the deflector inner chamber connects the axis of guide, be with flap in the axis of guide, be with spring on the flap; Be placed with seal ring on the valve seat, be pressed with retainer ring on the seal ring, retainer ring is fixed on the valve body.

Described deflector is fixedlyed connected with valve rear end, is with the corrosion resistant lining in the axis of guide that the deflector inner chamber connects; The rear end part of flap is enclosed within the lining, and the cambered surface of flap is towards fluid inlet; Spring one end withstands on the guiding axle head and pushes up an end and withstand on the flap.

Described deflector shell is streamlined.

Characteristics of the present utility model are: the safety check of the utility model design will press the hurdle to make deflector into, the shell of deflector adopts airflow design, the flow resistance of fluid is diminished, and when the flap non-return, fluid has bigger impact force action on flap unlike former patented product, seal ring is the blocking problem very close to each other that compresses with retainer ring, and the impact force of flap and seal ring reduces greatly, has increased the working life and the quiet effect of product.

Below in conjunction with embodiment's accompanying drawing the utility model is described further.

Accompanying drawing 1 is the example structure schematic representation.

Among the figure: 1, valve body; 2, seal ring; 3, retainer ring; 4, flap; 5, spring; 6, corrosion resistant lining; 7, the axis of guide; 8, deflector; 9, valve seat.

As shown in the figure: deflector 8 is fixedlyed connected with valve body 1 rear end, and deflector 8 inner chambers connect the axis of guide 7, are connected with corrosion resistant lining 6 in the axis of guide 7.The rear end part of flap 4 is enclosed within 6 li of corrosion resistant linings, spring 5 one ends withstand on guiding axle head top, one end withstands on the flap 4, seal ring 2 is placed on the valve seat 9, retainer ring 3 is fixed together with valve body 1, and retainer ring 3 is pressed on the seal ring 2, and deflector 8 is connected and composed by support and housing, under the enough situation of intensity, reduce flow resistance as far as possible.Since the utility model be on the basis of former 98232441.3 patent No. products, carry out improved, the improvement of its structure just is flow resistance in reducing and gap obstruction, and the structure of other valve body 1, valve seat 9, seal ring 2, flap 4, spring 5 is identical with the patented product of the former patent No. 98232441.3 with working principle.Gapped between the bar of flap 4 and the corrosion resistant lining 6, make the flap bar can freely move up and down and should not allow water enter, no matter safety check founds dress dress still for sleeping in during use, the hydrodynamic pressure entrance region is greater than outlet area when driving valve, when the pressure flap 4 that acquires a certain degree leaves seal ring 2, this moment, fluid was from the entrance region to the outlet area.When closing valve, the pressure of outlet area fluid is greater than entrance region, and the elastic force of spring 5 and hydrodynamic pressure hold out against non-return on the seal ring with flap 4.

Claims

1, a kind of upright double-purpose DRV that crouches, it comprises that valve body, valve seat, seal ring, flap, spring constitute, and is characterized in that: be fixedly connected with deflector on the valve body, the deflector inner chamber connects the axis of guide, is with flap in the axis of guide, is with spring on the flap; Be placed with seal ring on the valve seat, be pressed with retainer ring on the seal ring, retainer ring is fixed on the valve body.

2, a kind of upright double-purpose DRV that crouches according to claim 1, it is characterized in that: described deflector is fixedlyed connected with valve rear end, is with the corrosion resistant lining in the axis of guide that the deflector inner chamber connects; The rear end part of flap is enclosed within the lining, and the cambered surface of flap is towards fluid inlet; Spring one end withstands on the guiding axle head and pushes up an end and withstand on the flap.

3, a kind of upright double-purpose DRV that crouches according to claim 1, it is characterized in that: described deflector shell is streamlined.