CN205877289U

CN205877289U - Swing check valve

Info

Publication number: CN205877289U
Application number: CN201620612811.1U
Authority: CN
Inventors: 郑德宠
Original assignee: JIUTONG GROUP Co Ltd
Current assignee: JIUTONG GROUP Co Ltd
Priority date: 2016-06-21
Filing date: 2016-06-21
Publication date: 2017-01-11
Anticipated expiration: 2026-06-21

Abstract

The utility model relates to a swing check valve, including the check valve body, check valve body left end is provided with the water inlet, be provided with sealed slider in the water inlet, sealed slider right -hand member passes through spring coupling in the right -hand member portion of water inlet, the upper and lower lateral wall of water inlet afterbody is provided with the weeping mouth, check valve body right -hand member is provided with the delivery port, the upper end of check valve body is through the fixed upper end cover that is provided with of bolted construction, the beneficial effects of the utility model are that: through setting up spring, sealed slider, realize that when sealed slider atress, the weeping mouth exposes out to the switch closure of weeping mouth, flow into in the liquid follow weeping mouth, replaced the rocking arm formula check valve among the prior art through the spring structure, avoided the shortcoming of rocking arm formula.

Description

A kind of swing check valve

Technical field

This utility model relates to valve technology field, particularly relates to a kind of swing check valve.

Background technology

Swing check valve is typically made up of valve body, valve seat, flap, valve gap, valve rod, rocking arm, the flap back side by rocking arm, Valve rod is installed with on valve body, and flap front is provided with the sealing surface cooperated with valve seat, utilizes pressure medium to promote flap to rotate Opening, when buffer brake is more than positive pressure, flap is closed under deadweight and reverse media pressure effect, is prevented medium from flowing backwards Damage equipment.The major defect of existing swing check valve is: can produce rotation sealing during lid is turned on and off, impact Seal the quality of fit with water inlet when lid is closed, reduce sealing property；And rocking arm needs to bear the deadweight sealing lid, for warp Often for the rocking arm of motion, there is abrasion to a certain extent, decrease service life.

Based on above reason, a kind of Novel swing check valve is needed to be devised, by arranging spring, sealing and slide Block, it is achieved closing the switch of leakage mouth, when sealing slide block stress, leakage mouth is exposed out, and liquid flows into from leakage mouth, Instead of rocker-arm check-valves of the prior art by spring structure, it is to avoid the shortcoming of rocker-arm, i.e. a kind of swing type is only Return valve.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of swing check valve.

This utility model is to be achieved through the following technical solutions: a kind of swing check valve, including check-valves body, described Check-valves body left end is provided with water inlet, is provided with sealing slide block in described water inlet, and described sealing slide block right-hand member passes through bullet Spring is connected in the right part of water inlet, and the top and bottom sidewall of described water inlet afterbody is provided with leakage mouth；Described check-valves body Right-hand member is provided with outlet；The upper end of described check-valves body is fixedly installed upper end cover by bolt arrangement.

Further, the length of described leakage mouth is more than the length of sealing slide block, when sealing slide block and being in compressive state, Expose leakage mouth, make liquid flow into from leakage mouth.

Further, described water inlet, outlet are flange-interface, and are fixed on check-valves body by welding manner Two ends.

Further, the diameter of described water inlet, more than the diameter of outlet, improves discharge pressure.

Compared with prior art, the beneficial effects of the utility model are: this utility model simple in construction, reasonable in design, By arranging spring, sealing slide block, it is achieved closing the switch of leakage mouth, when sealing slide block stress, leakage mouth is exposed out, Liquid flows into from leakage mouth, instead of rocker-arm check-valves of the prior art by spring structure, it is to avoid rocker-arm Shortcoming.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

In figure: 1, check-valves body, 2, water inlet, 3, outlet, 4, seal slide block, 5, leakage mouth, 6, spring, 7, on End cap, 8, bolt arrangement.

Detailed description of the invention

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain This utility model, is not used to limit this utility model.

Referring to Fig. 1, Fig. 1 is structural representation of the present utility model.

A kind of swing check valve, including check-valves body 1, described check-valves body 1 left end is provided with water inlet 2, institute Being provided with sealing slide block 4 in stating water inlet 2, described sealing slide block 4 right-hand member is connected in the right part of water inlet 2 by spring 6, The top and bottom sidewall of described water inlet 2 afterbody is provided with leakage mouth 5；Described check-valves body 1 right-hand member is provided with outlet 3；Described The upper end of check-valves body 1 is fixedly installed upper end cover 7 by bolt arrangement 8；The length of described leakage mouth 5 is more than sealing slide block The length of 4；Described water inlet 2, outlet 3 are flange-interface, and are fixed on the two of check-valves body 1 by welding manner End；The diameter of described water inlet 2 is more than the diameter of outlet 3.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model Protection domain within.

Claims

1. a swing check valve, including check-valves body (1), it is characterised in that: described check-valves body (1) left end is arranged Having water inlet (2), be provided with sealing slide block (4) in described water inlet (2), described sealing slide block (4) right-hand member is by spring (6) even Being connected in the right part of water inlet (2), the top and bottom sidewall of described water inlet (2) afterbody is provided with leakage mouth (5)；Described check-valves Body (1) right-hand member is provided with outlet (3)；The upper end of described check-valves body (1) is fixedly installed by bolt arrangement (8) End cap (7).

A kind of swing check valve the most according to claim 1, it is characterised in that: the length of described leakage mouth (5) is more than Seal the length of slide block (4).

A kind of swing check valve the most according to claim 1, it is characterised in that: described water inlet (2), outlet (3) It is flange-interface, and is fixed on the two ends of check-valves body (1) by welding manner.

A kind of swing check valve the most according to claim 1, it is characterised in that: the diameter of described water inlet (2) is more than The diameter of outlet (3).