CN202158233U

CN202158233U - Check valve of range hood

Info

Publication number: CN202158233U
Application number: CN2011202469627U
Authority: CN
Inventors: 李年平; 王军元
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2011-07-12
Filing date: 2011-07-12
Publication date: 2012-03-07
Anticipated expiration: 2021-07-12

Abstract

The utility model discloses a check valve of a range hood, which comprises a valve shell and a valve piece consisting of a first valve piece and a second valve piece, wherein the first valve piece and the second valve piece are respectively fixed with a first rotating shaft and a second rotating shaft. The check valve of the range hood is characterized in that a first gear and a second gear are fixedly connected at the positions corresponding to the first rotating shaft and the second rotating shaft, and the first gear is meshed with the second gear, therefore, the two valve pieces of the valve body can be linked, and the normal work of the range hood can be guaranteed.

Description

A kind of kitchen ventilator check valve

Technical field

The utility model relates to a kind of check valve that is used for kitchen ventilator, especially a kind of check valve that can effectively open and close.

Background technique

Existing kitchen ventilator check valve is generally by a cylindrical case, built-in two valve blocks, two valve block coaxial rotation; After kitchen ventilator is opened; By the pressure of blower fan generation valve block is opened, after kitchen ventilator is closed, valve block is closed by the power that spring between two valve blocks and valve block deadweight produce.

Like notice of authorization number is the disclosed a kind of smoke evacuation check valve agent structure of Chinese patent of CN201412567Y, is provided with valve body and baffle plate, is provided with support ring in the valve body, at the support ring top sideboard is set, and is connected with Returnning spring on the baffle plate; When opening kitchen ventilator, the row of wind of kitchen ventilator provides power, blows two baffle plates open, and when kitchen ventilator quit work, the spring-back force of Returnning spring made the baffle plate return on the half-turn support ring.

Yet such kitchen ventilator is when kitchen ventilator is opened; If one of them baffle plate is opened in advance,, cause the another one baffle plate normally not open because pressure reduction reduces in the valve body; This moment, kitchen ventilator reduced owing to air-out area, caused the lampblack absorbing deleterious, and noise increases; When kitchen ventilator is closed,, cause one of them baffle plate to be closed because external resistance is inhomogeneous in advance; This moment, two baffle plate angles enlarged; Spring force reduces, and causes this spring force that another baffle plate is normally closed, and this moment is because poorly sealed; To cause the oil smoke in the flue to seal in the user kitchen, influence kitchen environment.

The model utility content

The utility model technical problem to be solved provides a kind of kitchen ventilator check valve, and two valve blocks interlock through valve body makes check valve effectively to open, to guarantee the proper functioning of kitchen ventilator.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of kitchen ventilator check valve; Comprise valve shell and the valve block of forming by first valve block and second valve block; Said first valve block and said second valve block are fixed with first rotating shaft and second rotating shaft respectively; It is characterized in that, be fixedly connected with first gear and second gear on said first rotating shaft and the corresponding position of said second rotating shaft, said first gear and said second gear engagement.

Be set with the Returnning spring that said valve block is applied spring-back force in said first rotating shaft or said second rotating shaft.

Said Returnning spring is a torsion spring; Comprise first section and second section; Said first section pushes against on the upper surface of said first valve block, and said second section pushes against on the upper surface of said second valve block, can better assist the valve block return by the spring-back force of spring thus.

Said first valve block and said second valve block are all angled with level, to reduce the stroke of opening, closing.

When said check valve cut out, the outer rim of said valve block was shelved on the upper edge of madial wall of said valve shell, and the radian of the upper edge of said madial wall is consistent with the radian of said valve block outer rim.

Compared with prior art, the advantage of the utility model is: gear engagement is passed through in the rotating shaft of two valve blocks, when a valve block rotates, can be driven another valve block and open or close, to guarantee the kitchen ventilator proper functioning; Through valve block being arranged to the angle certain, to reduce the stroke of opening, closing with horizontal tilt.

Description of drawings

Fig. 1 is the perspective view of the check valve of the utility model;

Fig. 2 is the partial enlarged drawing of the check valve of the utility model;

Fig. 3 be Fig. 1 A-A to sectional view.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Referring to Fig. 1 and Fig. 3, a kind of kitchen ventilator check valve comprises the valve shell 1 and valve block 2 of tubular.Valve block 2 is positioned at valve shell 1, is made up of two equal semicirculars in shape of valve block first valve block 21 and second valve block 22.First valve block 21 and second valve block 22 are fixing with first rotating shaft 23 and second rotating shaft 24 respectively, can realize fixing through the first rotating shaft connecting sheet 25 and the second rotating shaft connecting sheet 26 respectively, and each valve block all rotates through rotating shaft separately.First rotating shaft 23 and second rotating shaft 24 two ends separately are pivotally connected to respectively on the rotating shaft support block 12 of valve shell 1 madial wall 11.

Each valve block all has a certain degree with level, with the stroke that reduces to open, close.When check valve cut out, the outer rim of valve block 2 was shelved on the upper edge of madial wall 11, and correspondingly, the upper edge of madial wall 11 is not a level, and its radian is consistent with the outer rim of valve block 2.

Referring to Fig. 2; Returnning spring 3 is fixedly installed in first rotating shaft 23 or second rotating shaft 24, and in the present embodiment, Returnning spring 3 is a torsion spring 3; Comprise two-part; Push against on the upper surface of first valve block 21 for first section 31 and second sections 32, the first sections 31, second section 32 pushes against on the upper surface of second valve block 22.Thus, make 3 pairs of valve blocks 2 of torsion spring apply a spring-back force that its return is closed all the time.Be fixedly connected with in first rotating shaft 23 and be fixedly connected with second gear 28 corresponding in 27, the second rotating shafts 23 of first gear with first gear, 27 positions.The end of first valve block 21 is stuck between two teeth of first gear 27, between two teeth of end card second gear 28 of second valve block 22, and

first gear

27 and 28 engagements of second gear.Preferably, torsion spring 3 all is axial symmetry with respect to first, second rotating

shaft

23,24 respectively with first,

second gear

27,28.

The principle and the working procedure of the utility model are following:

When kitchen ventilator was opened, the row of wind of kitchen ventilator provided power, blew first and

second valve blocks

21,22 open, and it is outdoor that oil smoke is discharged smoothly; When kitchen ventilator quits work, under the deadweight effect of the spring-back force of torsion spring 3 and valve block 2, make valve block 2 returns.Because first gear 27 and second gear, 28 engagement driving; Can open or close so that one of them valve block drives another valve block; Even under the uneven situation of external resistance, the problem that one of them valve block can't normally open and close can not occur yet, effectively guarantee the kitchen ventilator proper functioning.

The above is merely the preferred implementation of the utility model; Should be pointed out that for those of ordinary skill in the art, do not breaking away under the principle prerequisite of the utility model; Can also make various deformation and improvement, this also should be regarded as the protection domain of the utility model.

Claims

1. kitchen ventilator check valve; Comprise valve shell (1) and the valve block of forming by first valve block (21), second valve block (22) (2); Said first valve block (21) and said second valve block (22) are fixing with first rotating shaft (23) and second rotating shaft (24) respectively; It is characterized in that, be fixedly connected with first gear (27) and second gear (28) on said first rotating shaft (23) and the corresponding position of said second rotating shaft (24), said first gear (27) and said second gear (28) engagement.

2. check valve as claimed in claim 1 is characterized in that, is set with the Returnning spring (3) that said valve block (2) is applied spring-back force in said first rotating shaft (23) or said second rotating shaft (24).

3. check valve as claimed in claim 2; It is characterized in that; Said Returnning spring (3) is torsion spring (3); Comprise first section (31) and second section (32), said first section (31) push against on the upper surface of said first valve block (21), and said second section (32) push against on the upper surface of said second valve block (22).

4. like each described check valve among the claim 1-3, it is characterized in that said first valve block (21) and said second valve block (22) are all angled with level.

5. check valve as claimed in claim 4; It is characterized in that; When said check valve cut out, the outer rim of said valve block (2) was shelved on the upper edge of madial wall (11) of said valve shell (1), and the radian of the upper edge of said madial wall (11) is consistent with the radian of said valve block (2) outer rim.