CN201475443U

CN201475443U - Adjustable automatic non-return valve

Info

Publication number: CN201475443U
Application number: CN2009202307979U
Authority: CN
Inventors: 丁永芝; 袁斌; 翁刚
Original assignee: JIANGSU HEHAI SUPPLY AND DRAINAGE WHOLE SET EQUIPMENT CO Ltd
Current assignee: JIANGSU HEHAI SUPPLY AND DRAINAGE WHOLE SET EQUIPMENT CO Ltd
Priority date: 2009-09-08
Filing date: 2009-09-08
Publication date: 2010-05-19
Anticipated expiration: 2019-09-08

Abstract

The utility model relates to an adjustable automatic non-return valve, comprising a valve seat and a valve gate arranged in the front of the valve seat, wherein one side of the valve seat is provided with a rocker-bar bearing that is connected with a lateral side of the valve gate through a hinge shaft, the rocker-bar bearing is connected with a valve-seat bearing through a bolt, the angle alpha between the rotation axis of the hinge shaft and the axial vertical face of the valve gate ranges from 3 to 23 degrees, the angle beta between the closed face of the valve gate and the radial cross section of the valve gate ranges from 3 to 21 degrees, the valve gate is a round or rectangular single-leaf gate or a double-leaves gate composed of a left gate and a right gate, and the axial cross section of the valve seat is of a round shape or a rectangular shape. The adjustable automatic non-return valve has the advantages of simple structure, great valve opening angle, small medium resistance, large flow capacity, low utilization cost, low energy consumption and high safety factor, can realize automatic opening and closing of the valve gate without starting devices, and is applied to irrigation and drainage pumping stations of dike-like buildings for rivers and lakes.

Description

Adjustable automatic check valve

Technical field

The utility model relates to a kind of safety check, is the closed intensity of a kind of adjustable gate and valve seat, the safety check of automatic on-off specifically.

Background technique

Drainage and irrigation station for rivers lake dike protective embankment all is to adopt the suspension type flap valve both at home and abroad, and its opening angle is little, resistance of medium is big, energy consumption is many, and unit efficiency is low, and particularly large-scale flap valve must be equipped with hydraulic hoist and use, and also has problems such as impact force and water hammer.

The safety check that is usually used in irrigation and drainage at present, the center line of its valve overlaps with the valve seat longitudinal center line, the vertical setting of closed of valve and valve seat, in the opening-closing process of valve, opening speed is slow, consuming time many, be applied to quick unlatching, when closing the occasion of partition, need equally to be equipped with and help pass mechanism or increase to help the power that closes mechanism, complex structure, the operating cost height, Applicable scope is little.

Summary of the invention

Little in order to solve irrigation and drainage are used in the prior art valve mechanism complexity, opening angle, need to be equipped with and help pass mechanism or increase to help the power of pass mechanism to realize valve closing, energy consumption is many, the high deficiency of operating cost, the purpose of this utility model provides a kind of simple in structure, opening angle is big, user cost is low, and energy saving utilizes valve deadweight component to realize the adjustable automatic check valve that valve is closed automatically.

The technical solution adopted in the utility model is: adjustable automatic check valve comprises valve seat and is positioned at the valve of this valve seat front end, technical characterstic is that described valve seat one side is provided with the valve seat bearing, valve one side is connected with rocker bar bearing through hinge axis, rocker bar bearing is connected through bolt with the valve seat bearing, the axial vertical guide angle of the axis of rotation of described hinge axis and valve seat is α, 3 °≤α≤23 °, the closed of described valve seat and valve seat radial cross section angle are β, 3 °≤β≤21 °.Rocker bar bearing is connected through bolt with the valve seat bearing of valve seat one side, and adjustable bolt seals valve and valve seat closed fully, guarantees that water does not reflux, good seal performance, and help increasing the valve opening angle, and reduce resistance to medium, improved flow; The closed of the axial vertical guide of the axis of rotation of hinge axis and valve seat, valve seat and valve seat radial cross section be angled angle respectively, the cross component force of valve deadweight can be used as closes a power, valve is closed automatically, solved the problem that traditional flap valve need be equipped with start-stop device, reduce user cost, energy saving.

Further, described valve is the two-door of simple gate or left valve and right valve composition; Described valve is circle or rectangle, and the axial cross section of described valve seat is circle or rectangle.In valve applications during in different occasions or different drainage and irrigation station flow size requirements, can select the adjustable automatic check valve of suitable simple gate or two-door, circle or rectangular configuration, rationally improve the irrigation and drainage ability, pumping plant irrigation and drainage in flood season safety coefficient height.

The utility model adopts the hinge axis axis of rotation and the axial vertical guide of valve seat of valve, the closed of valve seat and valve seat radial cross section are angle α respectively, the double fastener corner structure of β, utilize valve from focusing on α, separation on the β angle is as closing gate action power, it is simple in structure, the valve opening angle is big, resistance of medium is little, and flow is big, need not be equipped with start-stop device and can realize the valve automatic on-off, user cost is low, energy saving, the drainage and irrigation station that is fit to rivers lake dike protective embankment uses irrigation and drainage safety coefficient height, compare with traditional suspension type flap valve, opening angle is big by 2/3, and flow is big by 1/2, and flow velocity improves 1/3, irrigation and drainage efficient improves 1/3, energy saving 22.5%.

Description of drawings

Fig. 1 is the utility model embodiment one a structural representation;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1;

Fig. 4 is the utility model embodiment two a structural representation;

Fig. 5 is the utility model embodiment three a structural representation.

Among the figure: hoisting ring 1, handle 2,

valve

3,31,32,

valve seat

4,41,42, valve seat bearing 43,44,45, rocker bar bearing 5, hinge axis 6, seal ring 7, limiting stopper 8.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1-3 illustrated embodiment one, adjustable automatic check valve is formed the simple gate structure by a circular valve 3 and a circular valve seat 4.Valve seat 4 upper side edges are provided with hoisting ring 1, and valve seat 4 right edge are provided with upper and lower two valve seat bearings 43 and limiting stopper 8, and the closed of valve seat 4 is provided with the annular seal groove of band seal ring 7; Valve 3 is provided with handle 2, valve 3 right edge connect upper and lower two rocker bar bearings 5 through hinge axis 6, rocker bar bearing 5 is connected through bolt with valve seat bearing 43 respectively makes valve 3 realize opening and closure around hinge axis 6 rotations, hinge axis 6 axle center and valve seat 4 axial vertical guide angles are α, 3 °≤α≤23 °, the closed of valve seat 4 and valve seat 4 radial cross section angles are β, 3 °≤β≤21 °, preferred α=5 °, β=6 °.

Before adjustable automatic check valve uses, adjust bolt and make valve and valve seat closed realize sealing fully; During use, water impact is towards the valve of valve seat, and valve is realized opening automatically; After using end, along under the component effect on angle α, the β angle, close automatically by the realization valve at self gravitation for valve.

Embodiment illustrated in fig. 4 two, adjustable automatic check valve is the two-door structure of being made up of two halves circular valve 31 and valve seat 41, and the dual-side of valve seat 41 is equipped with upper and lower two valve seat bearings 44; The circular arc side of two halves circular valve 31 all connects upper and lower two rocker bar bearings 5 through hinge axis 6, the rocker bar bearing 5 of semicircle valve 31 connects valve seat bearing 44 through bolt makes two halves circular valve 31 around unlatching and the closure of hinge axis 6 rotation realization two halves circular valves 31 with valve seat 41, and hinge axis 6 axle center are identical with embodiment one with valve seat 41 radial cross section angles with the closed of valve seat 41 axial vertical guide angles, valve seat 41.

Embodiment illustrated in fig. 5 three, adjustable automatic check valve is the two-door structure of being made up of two rectangle valves 32 and rectangle valve seat 42, and the dual-side of rectangle valve seat 42 is equipped with upper and lower two valve seat bearings 45; The circular arc side of two rectangle valves 32 all connects upper and lower two rocker bar bearings 5 through hinge axis 6, the rocker bar bearing 5 of rectangle valve 32 connects valve seat bearing 45 through bolt makes two rectangle valves 32 around unlatching and the closure of hinge axis 6 rotation realizations two rectangle valves 32 with rectangle valve seat 42, and hinge axis 6 axle center are identical with embodiment one with valve seat 42 radial cross section angles with the closed of valve seat 42 axial vertical guide angles, valve seat 42.

Protection domain of the present utility model is not limited to the shape of valve and valve seat in the foregoing description, can select difform valve and valve seat for use, to reach better irrigation and drainage by different use occasions and drainage and irrigation station discharge capacity demand.

Claims

1. adjustable automatic check valve, comprise valve seat (4) and be positioned at the valve (3) of this valve seat front end, it is characterized in that: described valve seat one side is provided with rocker bar bearing (5), the valve side is connected with rocker bar bearing through hinge axis (6), rocker bar bearing is connected through bolt with valve seat bearing (43), and the axial vertical guide angle of the axis of rotation of described hinge axis and valve seat is α, 3 °≤α≤23 °, the closed of described valve seat and valve seat radial cross section angle are β, 3 °≤β≤21 °.

2. adjustable automatic check valve according to claim 1 is characterized in that: described valve is a simple gate.

3. adjustable automatic check valve according to claim 1 is characterized in that: described valve is the two-door of left valve and right valve composition.

4. according to claim 1 or 2 or 3 described adjustable automatic check valves, it is characterized in that: described valve is circle or rectangle, and the axial cross section of described valve seat is circle or rectangle.