CN201412566Y

CN201412566Y - A check valve

Info

Publication number: CN201412566Y
Application number: CN2009201850065U
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: 2010-02-24
Anticipated expiration: 2019-05-13

Abstract

The utility model pertains to the field of water pump pipe technology, especially relates to a check valve which includes a valve body, a valve core, and a valve seat. The valve seat is disposed in the middle of the hollow valve body, the valve core is disposed on the valve seat. The head portion of the valve core is covered on the valve seat on the fluid outlet side, the tail portion extrudes from the fluid outlet side of the valve seat after passing through the valve seat. A projecting spring seat is disposed on the tail end, and a spring is disposed between the spring seat and the valve seat on the fluid inlet side. The check valve has advantages of light weight, great checking effect, convenient detaching and cleaning, so that the valve can be applied as the check valve on water pumpswith large diameter.

Description

A kind of safety check

Technical field:

The utility model relates to the water pump pipeline technical 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 lifting spool in the valve body.

But, when the Lift check valve level is installed, when outlet has a down dip and installs with Swing check valve, spool closure and lose check function naturally takes place in the capital, simultaneously, there is the narrow limitation of pipe arrangement setting angle in actual use in above-mentioned two kinds of safety check, and its volume is big, Heavy Weight is not easy to dismounting and cleans.

Summary of the invention:

The purpose of this utility model provides a kind of in light weight, and non-return is effective, and disassembly, cleaning are safety check easily.

The utility model is achieved in that

A kind of safety check, comprise valve body, spool and valve seat, middle part in hollow valve body is provided with valve seat, spool is arranged on the valve seat, the head of spool is fastened on the valve seat of fluid output side, afterbody passes the fluid inlet side that the center hole of valve seat stretches out valve seat, and tail end is provided with the spring seat of evagination, and spring is arranged between the valve seat of spring seat and fluid inlet side.

The head of above-mentioned spool is a hemisphere, its diameter is greater than the diameter of valve base center hole, the end that the afterbody of spool supports with the body of rod in the middle of being is that installation position, the other end are spring seat, and the head of spool is connected with screw or bolt with the attachment hole of the installation position of afterbody by the middle part.

Above-mentioned spool is made of plastic materials.

Above-mentioned valve body arranged outside has bolt to hang the hook that lifting rope is used.

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

1, the utility model adopts the horizontal moving type spool, and the spool closure can displacement, and non-return is effective, and in two sub-sections, makes disassembly, cleaning convenient;

2, spool of the present utility model selects for use plastics to make, and is in light weight, reduces the resistance to current, guarantees that current are unobstructed, saves cost;

3, valve body of the present utility model is provided with the lifting rope hook outward, and convenient the extension got;

4, the utility model suits to do the safety check application on bigbore water pump.

Description of drawings:

Fig. 1 is that check valve structure described in the utility model cuts open figure;

Fig. 2 is that check valve structure described in the utility model cuts open figure

Embodiment:

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

A kind of safety check, comprise valve body 1, spool 3 and valve seat 2, at the middle part of hollow valve body 1 valve seat 2 is set, spool 3 is arranged on the valve seat 2, the head 31 of spool 3 is fastened on the valve seat 2 of fluid output side, afterbody 32 passes the fluid inlet side that the center hole of valve seat 2 stretches out valve seat 2, and the tail end of afterbody 32 is provided with the spring seat 321 of evagination, and spring 4 is arranged between the valve seat 2 of spring seat 321 and fluid inlet side.

The head 31 of above-mentioned spool 3 is hemispheres, its diameter is greater than the diameter of valve seat 2 center holes, the end that the afterbody 32 of spool 3 supports with the body of rod 322 in the middle of being is that installation position 323, the other end are spring seat 321, and the head 31 of spool 3 is connected with screw 6 or bolt with the attachment hole of the installation position 323 of afterbody 32 by the middle part.

Above-mentioned spool 3 usefulness plastic materialss are made.

Above-mentioned valve body 1 arranged outside has bolt to hang the hook 5 that lifting rope is used.

Application of the present utility model: the water intake that model utility is installed in water pump, be suspended in the water with lifting rope hook 5, behind the starting mode of pump, water pump is to the water supercharging, water extruding spool 3 after the supercharging and pressure spring 4 make on the spool 3 and move, current flow through from the space between spool 3 and the valve seat 2, spray from water outlet; After water pump shut down, water pump disappeared to the pressure of water, and under the effect of spring 4 reposition forces, the head 31 of spool 3 is fastened on the valve seat 2 of fluid output side and implements sealing, has cut off the backflow of water, the so just real purpose of unidirectional non-return.

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 safety check, comprise valve body, spool and valve seat, it is characterized in that: the middle part in hollow valve body is provided with valve seat, spool is arranged on the valve seat, the head of spool is fastened on the valve seat of fluid output side, afterbody passes the fluid inlet side that the center hole of valve seat stretches out valve seat, and tail end is provided with the spring seat of evagination, and spring is arranged between the valve seat of spring seat and fluid inlet side.

2, safety check according to claim 1, it is characterized in that: the head of described spool is a hemisphere, its diameter is greater than the diameter of valve base center hole, the end that the afterbody of spool supports with the body of rod in the middle of being is that installation position, the other end are spring seat, and the head of spool is connected with screw or bolt with the attachment hole of the installation position of afterbody by the middle part.

3, safety check according to claim 1 is characterized in that: described spool is made of plastic materials.

4, safety check according to claim 1 is characterized in that: described valve body arranged outside has bolt to hang the hook that lifting rope is used.