CN106224599A

CN106224599A - Multi-stage check valve

Info

Publication number: CN106224599A
Application number: CN201610744907.8A
Authority: CN
Inventors: 钱向阳
Original assignee: Johnston Flow Technologies Wuxi Co ltd
Current assignee: Wuxi Lamoton Technology Co ltd
Priority date: 2016-08-29
Filing date: 2016-08-29
Publication date: 2016-12-14
Anticipated expiration: 2036-08-29
Also published as: CN106224599B

Abstract

The invention discloses a multistage check valve which comprises a valve shell, wherein the valve shell comprises a first shell, a second shell and a third shell, the first shell is L-shaped, one end of the first shell is fixedly connected with the top end of the second shell, the second shell is round table-shaped, the bottom end of the second shell is fixedly connected with the surface of the third shell, the inner wall of the first shell is fixedly connected with a spring seat, an annular block and a guide pipe from left to right, the side surface of the spring seat is fixedly connected with a spring, one end of the spring is fixedly connected with a valve clack, and the surface of the valve clack is provided with a rubber ring. According to the invention, the spring, the valve clack and the annular block are arranged, so that when the water pressure of the water inlet end in the first shell is higher than the water pressure of the water outlet end, liquid pushes the valve clack open to compress the spring, the liquid flows out from the water outlet end, and when the water pressure of the water inlet end is lower than the water pressure of the water outlet end, the spring pushes the valve clack to be tightly attached to the annular block, so that the check valve can prevent the liquid from flowing.

Description

A kind of multistage check-valves

Technical field

The present invention relates to valve technology field, a kind of multistage check-valves.

Background technology

Valve is to apply to zero component common in fluid science and technology, and valve is divided into many types according to use, wherein non-return Valve is a kind of a kind of valve preventing ex vivo from flowing backwards and to use；Check-valves on market generally uses hydraulic pressure principle, works as water inlet end When hydraulic pressure is more than water side hydraulic pressure, flap is under pressure and is opened, water body proper flow, when water inlet end hydraulic pressure is less than water side water During pressure, flap is closed, and prevents the backflow of liquid；But this kind of check-valves can not effectively prevent press water from arm reflux to main And the backflow phenomenon occurred, if being applied in domestic water water supply network, occur backflow pollution then can endanger human health greatly.

Summary of the invention

It is an object of the invention to provide a kind of multistage check-valves, the advantage possessing the anti-backflow of multistage subsection, solve Conventional check valves can not effectively prevent the problem that liquid refluxes.

For achieving the above object, the present invention provides following technical scheme: a kind of multistage check-valves, including valve housing, institute State valve housing and include that the first housing, the second housing and the 3rd housing, the profile of described first housing are L-shaped, described first shell One end of body is fixing with the top of the second housing to be connected, and the profile of described second housing is truncated cone-shaped, the end of described second housing End is fixed with the surface of the 3rd housing and is connected, and the inwall of described first housing has from left to right been fixedly connected sequentially spring base, ring Shape block and guide pipe, the side of described spring base is fixedly connected with spring, and one end of described spring is fixedly connected with flap, described The surface configuration of flap has rubber ring, the one side of described flap to be fixedly connected with guide post, and described guide post is socketed in guiding The inside of pipe, the inwall of described second housing is fixedly connected with the first rubber layer, described second housing be internally provided with ball float, The inwall of described 3rd housing is fixedly connected with rubber membrane.

Preferably, described ring block includes block rubber and ring set, and one end of described block rubber is fixing with one end of ring set even Connect, and ring block generally streamlined structure.

Preferably, the surface configuration of described ball float has the second rubber layer, and ball float is the plastic sphere of hollow sealing.

Preferably, the surface of described rubber membrane is cut with cross crotch.

Preferably, the upper surface area of described second housing is 2 times of lower surface area, the maximum secting area of described ball float It it is 1.5 times of the second housing lower surface area.

Compared with prior art, beneficial effects of the present invention is as follows:

1, the present invention is by arranging flap, ball float and rubber membrane, has reached the effect of multistage anti-backflow.

2, the present invention is by arranging spring, flap and ring block, makes in the first housing the hydraulic pressure of water inlet end more than water side During hydraulic pressure so that liquid pushes flap open, by spring-compressed, liquid is flowed out by water side, when the hydraulic pressure of water inlet end is less than water side During hydraulic pressure, spring promotes flap to be close to ring block, makes check-valves that liquid can be stoped to reflux, by arranging ball float, the second shell Body and the first rubber layer, make the liquid of the second housing bottom be held up by ball float, make fluid flow paths open, if fluid pressure mistake Low, then ball float is pressed by under gravity, contacts with the second housing, is closed by fluid flow paths, by arranging rubber membrane, rubber membrane Surface is cut with cross crotch, is backed down by rubber membrane by hydraulic pressure, flows liquid into, and hydraulic pressure is too low, then rubber membrane leans on natural resiliency Produce elastic recovery, make liquid to flow into.

Accompanying drawing explanation

Fig. 1 is the cross-sectional view of front view of the present invention.

In figure: 1 valve housing, 101 first housings, 102 second housings, 103 the 3rd housings, 2 spring bases, 3 ring blocks, 31 Block rubber, 32 ring sets, 4 guide pipes, 5 springs, 6 flaps, 7 rubber rings, 8 guide posts, 9 first rubber layers, 10 ball floats, 11 rubber Film, 12 second rubber layers.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise Embodiment, broadly falls into the scope of protection of the invention.

Referring to Fig. 1, a kind of multistage check-valves, including valve housing 1, valve housing 1 includes the first housing 101, second Housing 102 and the 3rd housing 103, the profile of the first housing 101 is L-shaped, one end of the first housing 101 and the second housing 102 Top is fixing to be connected, and the profile of the second housing 102 is truncated cone-shaped, and the upper surface area of the second housing 102 is the 2 of lower surface area Times, the bottom of the second housing 102 is fixing with the surface of the 3rd housing 103 to be connected, and the inwall of the first housing 101 is the most successively Being fixedly connected with spring base 2, ring block 3 and guide pipe 4, ring block 3 includes block rubber 31 and ring set 32, one end of block rubber 31 Fix with one end of ring set 32 and be connected, and ring block 3 generally streamlined structure, block rubber 31 is set, makes device obturation effect More preferably, and ring block 3 generally streamlined, make the liquid loss of flood peak reduce, the side of spring base 2 is fixedly connected with spring 5, bullet One end of spring 5 is fixedly connected with flap 6, and the surface configuration of flap 6 has rubber ring 7, by arranging spring 5, flap 6 and ring block 3, when making that the hydraulic pressure of water inlet end is more than water side hydraulic pressure in the first housing 101 so that liquid pushes flap 6 open, is compressed by spring 5, Liquid is flowed out by water side, and when the hydraulic pressure of water inlet end is less than water side hydraulic pressure, spring 5 promotes flap 6 to be close to ring block 3, Making it close, stop liquid backflow, the one side of flap 6 is fixedly connected with guide post 8, and guide post 8 is socketed in the interior of guide pipe 4 Portion, arranges guide post 8 and guide pipe 4, makes the flap 6 can be along linear motion, it is to avoid owing to the skew of flap 6 makes poorly sealed Real, the inwall of the second housing 102 is fixedly connected with the first rubber layer 9, the second housing 102 be internally provided with ball float 10, ball float The surface configuration of 10 has the second rubber layer 12, and ball float 10 is the plastic sphere of hollow sealing, and ball float 10 is hollow sealing plastics Ball makes its weightening finish of will not intaking, and the buoyancy of needs is relatively low, reduces the loss of flood peak, and the maximum secting area of ball float 10 is the second housing 1.5 times of 102 lower surface areas, by arranging ball float the 10, second housing 102 and the first rubber layer 9, made for second housing 102 end Ball float 10 is held up by the liquid in portion, makes fluid flow paths open, if fluid pressure is too low, then ball float 10 is pressed by under gravity, with Second housing 102 contacts, and is closed by fluid flow paths, and the inwall of the 3rd housing 103 is fixedly connected with rubber membrane 11, rubber membrane The surface of 11 is cut with cross crotch, and by arranging rubber membrane 11, the surface of rubber membrane 11 is cut with cross crotch, by hydraulic pressure by rubber Glued membrane 11 backs down, and flows liquid into, and hydraulic pressure is too low, then rubber membrane 11 produces elastic recovery by natural resiliency, makes liquid to flow Enter.

During use, liquid is flowed into by water inlet end, makes rubber membrane 11 open by hydraulic pressure, and liquid flows into the second housing 102, will Ball float 10 holds up, and continues to flow into the first housing 101, and hydraulic pressure is more than then compression spring 5, water side, makes flap 6 open, so that liquid Body flows out, when water feeding pressure is less than water side hydraulic pressure, and spring 5 promotes flap 6, makes rubber ring 7 be in close contact with block rubber 31, and will Pathway closure, ball float 10 is pressed under relying on gravity simultaneously so that it is second rubber layer 12 on surface is combined closely with the first rubber layer 9, Avoiding the backflow of water, the film lobe elastic deformation of rubber membrane 11 simultaneously to reply, multistage fluid stopping prevents liquid from refluxing.

In sum: this multistage check-valves, by arranging flap 6, ball float 10 and the multistage non-return structure of rubber membrane 11, solve The problem of usual check-valves non-return poor effect.

Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible Understand and these embodiments can be carried out multiple change without departing from the principles and spirit of the present invention, revise, replace And modification, the scope of the present invention be defined by the appended.

Claims

1. a multistage check-valves, including valve housing (1), it is characterised in that: described valve housing (1) includes the first housing (101), the second housing (102) and the 3rd housing (103), the profile of described first housing (101) is L-shaped, described first housing (101) one end is fixing with the top of the second housing (102) to be connected, and the profile of described second housing (102) is truncated cone-shaped, described The bottom of the second housing (102) is fixing with the surface of the 3rd housing (103) to be connected, and the inwall of described first housing (101) is from a left side Be fixedly connected sequentially spring base (2), ring block (3) and guide pipe (4) to the right side, and the side of described spring base (2) is fixing to be connected Having spring (5), one end of described spring (5) to be fixedly connected with flap (6), the surface configuration of described flap (6) has rubber ring (7), the one side of described flap (6) is fixedly connected with guide post (8), and described guide post (8) is socketed in the interior of guide pipe (4) Portion, the inwall of described second housing (102) is fixedly connected with the first rubber layer (9), and the inside of described second housing (102) is arranged Ball float (10), the inwall of described 3rd housing (103) is had to be fixedly connected with rubber membrane (11).

The multistage check-valves of one the most according to claim 1, it is characterised in that: described ring block (3) includes block rubber (31) and ring set (32), one end of described block rubber (31) is fixing with one end of ring set (32) to be connected, and ring block (3) is generally Streamlined structure.

The multistage check-valves of one the most according to claim 1, it is characterised in that: the surface configuration of described ball float (10) has Two rubber layers (12), and ball float (10) is the plastic sphere of hollow sealing.

The multistage check-valves of one the most according to claim 1, it is characterised in that: the surface of described rubber membrane (11) is cut with Cross crotch.

The multistage check-valves of one the most according to claim 1, it is characterised in that: the upper surface of described second housing (102) Area is 2 times of lower surface area, and the maximum secting area of described ball float (10) is the 1.5 of the second housing (102) lower surface area Times.