CN201396488Y

CN201396488Y - Novel check valve

Info

Publication number: CN201396488Y
Application number: CN2009201850050U
Authority: CN
Inventors: 卢旭华
Original assignee: Taizhou Baile Pump Industry Co Ltd
Current assignee: Taizhou Baile Pump Industry Co Ltd
Priority date: 2009-05-13
Filing date: 2009-05-13
Publication date: 2010-02-03
Anticipated expiration: 2019-05-13

Abstract

The utility model relates to a check valve, which belongs to the technical field of water pump. The check valve comprises a valve body. The valve body is connected with a valve seat component to forma liquid channel. A clipping seat is arranged on the inner wall on one side of a liquid outlet, a discoid movable valve core is positioned on the clipping seat, a water channel is arranged between thevalve core and the clipping seat, a valve seat is positioned on the inner wall of the valve body between the valve core and the liquid inlet, and the liquid channel between the liquid inlet and the liquid outlet can be blocked when the valve moving to the valve seat. The check valve has the advantages that the area of the double-layer structure and the sealing member of the novel valve core are large, the closing is during the combination of the valve core and the valve seat is tight, and the return effect is good; the valve body, the circlip, the valve core and the valve seat are manufactured in split way, and the manufacture, the disassembly and the cleaning are convenient; the return during the checking is good, the sealing performance is good, the service life is long, therefore the check valve is suitable for large flow water pump.

Description

A kind of non-return valve

Technical field:

The utility model belongs to the pump technology field, refers in particular to a kind of pipe line check valve.

Background technique:

The safety check that existing water pump uses is divided into two types of rotary-open type and rise-fall types with the action form of spool.Wherein Swing check valve mainly is to stir to open and close by the spool in the valve body to realize one-directional fluid flow and shutoff.Equally, Lift check valve then is to open and cover the mobile and shutoff that realizes that fluid is unidirectional up and down by the lifting spool in the valve body, its deficiency is: the safety check of said structure uses in the water pump of big flow, be prone to that to cover the bad sealing that causes is poor, structural reason causes working life short, not maintenance easy to assemble etc.

Summary of the invention:

The purpose of this utility model provides and suits to use in the water pump of big flow, during non-return return accurately, a kind of safety check of good airproof performance, long service life, maintenance easy to assemble.

The utility model is achieved in that

A kind of non-return valve, comprise valve body and valve seat, valve body and valve seat combination form a fluid passage, the inwall of the valve body of liquid outlet one side is provided with deck, be placed with the movably spool of plate-like on the deck, be provided with flow channel between spool and the deck, be positioned with valve seat on the inwall of the valve body between spool and the liquid entering hole, spool moves to the fluid passage that can cut off on the valve seat between liquid entering hole and the liquid outlet.

Above-mentioned deck is the step that circumferentially is evenly equipped with at least three projectioies on the inwall of valve body, forms the flow channel of normal open between the adjacent step.

Above-mentioned valve seat is the double-layer structure of band center hole, and leaning on a side of spool is plastic layer, and another layer is a metal layer.

Above-mentioned is to utilize jump ring to be stuck on the draw-in groove on the valve interior wall being positioned with valve seat on the valve interior wall, cooperates the step on the valve interior wall that valve seat is located.

Corresponding circular groove and the annular protrusion that is provided with the mutual fastening of sealing usefulness on above-mentioned spool and the valve seat.

The interior warp of the water intake of above-mentioned valve body is greater than the interior warp of water outlet.

Be provided with the lifting rope hook at the middle part of the outer surface of above-mentioned valve body.

The outstanding compared to existing technology advantage of the utility model is:

1, the area of the double layer construction of spool of the present utility model and Sealing is big, spool and valve seat in conjunction with the time closed tight, non-return is respond well;

2, valve body of the present utility model, jump ring, spool and valve seat split are made, and are convenient to make and the dismounting cleaning.

3, monomer intensity of the present utility model is big, during non-return return accurately, good airproof performance, long service life, suit in the water pump of big flow, to do safety check and use.

Description of drawings:

Fig. 1 is a sectional view of the present utility model;

Fig. 2 is the sectional view of spool of the present utility model;

Fig. 3 is the sectional view of valve seat of the present utility model;

Fig. 4 is the sectional view of jump ring of the present utility model.

Embodiment:

With specific embodiment the utility model is further described below, referring to Fig. 1-4:

A kind of non-return valve, comprise valve body 10 and valve seat 20, valve body 10 and valve seat 20 are combined to form a fluid passage, the inwall of the valve body 10 of liquid outlet 102 1 sides is provided with deck 50, be placed with the movably spool 30 of plate-like on the deck 50, be provided with flow channel between spool 30 and the deck 50, be positioned with valve seat 20 on the inwall of the valve body 10 between spool 30 and the liquid entering hole 101, spool 30 moves to the fluid passage that can cut off on the valve seat 20 between liquid entering hole 101 and the liquid outlet 102.

Above-mentioned deck 50 is the steps that circumferentially are evenly equipped with four projectioies on the inwall of valve body 10, forms the flow channel of normal open between the adjacent step.

Above-mentioned valve seat 20 is the double-layer structure of band center hole 202, and leaning on a side of spool 30 is plastic layer 22, and another layer is a metal layer 21.

Above-mentioned is to utilize jump ring 40 to be stuck on the draw-in groove 104 on valve body 10 inwalls being positioned with valve seat 20 on valve body 10 inwalls, cooperates step 105 on valve body 10 inwalls with valve seat 20 location.

Corresponding circular groove 201 and the annular protrusion 301 that is provided with the mutual fastening of sealing usefulness on above-mentioned spool 30 and the valve seat 20.

The interior warp of the water intake 101 of above-mentioned valve body 10 is greater than the interior warp of water outlet 102.

Be provided with lifting rope hook 103 at the middle part of the outer surface of above-mentioned valve body 10.

When pump motor shuts down, current all can fall after rise with spool 30,301 of the annular protrusions of spool 30 are buckled on the circular groove 201 on the plastic layer 22, because plastic layer 22 is softer, closure will compare closely like this, whole water intake can be sealed like this greater than metal layer 21 in plastic layer 22 peripheries, reaches the purpose that prevents that current from refluxing.

The foregoing description only is one of preferred embodiment of the present utility model; be not to limit practical range of the present utility model with this; so: all equivalences of doing according to shape of the present utility model, structure, principle change, and all should be covered by within the protection domain of the present utility model.

Claims

1, a kind of non-return valve, comprise valve body and valve seat, valve body and valve seat combination form a fluid passage, it is characterized in that: the inwall of the valve body of liquid outlet one side is provided with deck, be placed with the movably spool of plate-like on the deck, be provided with flow channel between spool and the deck, be positioned with valve seat on the inwall of the valve body between spool and the liquid entering hole, spool moves to the fluid passage that can cut off on the valve seat between liquid entering hole and the liquid outlet.

2, a kind of non-return valve according to claim 1 is characterized in that: described deck is the step that circumferentially is evenly equipped with at least three projectioies on the inwall of valve body, forms the flow channel of normal open between the adjacent step.

3, a kind of non-return valve according to claim 1 is characterized in that: described valve seat is the double-layer structure of band center hole, and leaning on a side of spool is plastic layer, and another layer is a metal layer.

4, a kind of non-return valve according to claim 1 is characterized in that: described is to utilize jump ring to be stuck on the draw-in groove on the valve interior wall being positioned with valve seat on the valve interior wall, cooperates the step on the valve interior wall that valve seat is located.

5, a kind of non-return valve according to claim 1 is characterized in that: corresponding circular groove and the annular protrusion that is provided with the mutual fastening of sealing usefulness on described spool and the valve seat.

6, a kind of non-return valve according to claim 1, it is characterized in that: the internal diameter of the water intake of described valve body is greater than the internal diameter of water outlet.

7, a kind of non-return valve according to claim 1 is characterized in that: be provided with the lifting rope hook at the middle part of the outer surface of described valve body.