CN2777308Y

CN2777308Y - Chimney check valve

Info

Publication number: CN2777308Y
Application number: CN 200520030104
Authority: CN
Inventors: 张保国
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-02
Filing date: 2005-03-02
Publication date: 2006-05-03
Anticipated expiration: 2015-03-02

Abstract

The utility model discloses a fume channel non-return valve and aims to provide a fume channel non-return valve with the advantages of convenient opening, favorable sealing performance and intelligent control. The utility model comprises a valve body (1) and a non-return plate (2), wherein the middle lower part of the non-return plate (2) is provided with a suction plate (13), a permanent magnet (4) is fixed at a position corresponding to the suction plate (13) at the outlet end of the valve body (1), and a mechanical driving mechanism composed of a miniature motor (5), a crank shaft (6) and a connecting rod (7) is installed on a bottom plate (3) of the valve body (1). The miniature motor is externally connected with a control circuit. The utility model has the characteristics of favorable sealing performance, convenient operation and compact structure and the intelligent control function. The utility model is a product which can replace the existing fume channel non-return valves.

Description

Check valve for flue

Technical field:

The utility model relates in a kind of civil building kitchen the device with the lampblack exhauster adapted, more particularly, relates to a kind ofly prevent that the flue gas in the public gas flue from returning the check valve for flue of string.

Background technique:

Be the protection urban environment; reduce pollution of atmosphere; " the Guangzhou dwelling house design tentative specification " and " Code for design of dwelling houses " of Ministry of Construction's promulgation in 1999 that help people's appearance in physically and mentally healthy 1997 all require the design specialized flue; reach that the secondary oil smoke separates and non-return effect, thereby device such as check valve for flue occurred.The effect of check valve for flue is reflected on the closed performance of the unlatching performance of retaining board and retaining board.

At present the check valve for flue that uses generally is divided into two kinds of pneumatic opening type and electric opening formulas.Pneumatic opening type check valve: when range hood was worked, the strength by wind blew retaining board open.When range hood quit work, retaining board was taken on the exhaust port that drops on valve body by the strength of deadweight, prevents that soot gas from returning string.Its shortcoming is: when greasy filth is too many, and the easy adhesion of retaining board and exhaust port, the wind-force of kitchen ventilator even can not blow it open does not have the effect of smoke exhaust.The way that solves is often to clean retaining board and exhaust port.Electric opening formula check valve: the similar butterfly valve principle of this valve.At ordinary times, retaining board is electricity consumption Magnetic force tracting retaining board during unlatching at the effect lower seal valve inner of return spring.This valve has the ability of opening preferably.But because retaining board is at valve inner, operating device is in the valve body outside, and the dual face seals of retaining board is relatively poor, and there is ventilative phenomenon in the between centers crack.In addition, could open retaining board when range hood is worked, will for power supply of check valve, cause range hood and check valve work asynchrony phenomenon.

The model utility content:

The purpose of this utility model is to overcome shortcoming of the prior art, provides that a kind of unlatching is convenient, closed performance is good, the check valve for flue with intelligent control.

For solving the problems of the technologies described above, the utility model is achieved through the following technical solutions:

Check valve for flue of the present utility model comprises valve body, barge board, and described barge board middle and lower part is provided with suction disc; The corresponding suction disc fixed-site of described valve outlet end has permanent magnet, on the base plate of valve body mechanical transmission mechanism is housed; Described mechanical transmission mechanism is made up of the link rod plate that micromachine, bent axle and an end have rectangular hole, and link rod plate is contained in and is positioned at valve body base plate box, and bent axle is connected with micromachine, and the bar on the bent axle inserts in the hole of link rod plate; Described micromachine connection control circuit.

Described control circuit is made up of relay, diode, resistance, electric capacity, power socket and limit switch etc.Described limit switch is contained in the rear side of link rod plate.

Described micromachine is a synchronous machine, and rotating speed is 33 rev/mins.

The utility model beneficial effect compared with prior art is:

1) good seal performance.Adopt permanent magnet absorption retaining board mode to seal exhaust port, it is watertight that its seal degree can reach.

2) easy to use.Be controlled under the effect of motor by smart circuit and push retaining board open, reached the purpose of oil extraction flue gas.When greasy filth was too many, magnetic force made greasy filth play the closely knit effect of filleting to the pressure of the suction-operated generation of retaining board on the contrary, has guaranteed the retaining board excellent sealing performance.Though the closely knit unlatching difficulty that has increased retaining board of the filleting of greasy filth is easy to push open retaining board under the effect of motor.

Description of drawings:

Fig. 1 is a structural representation of the present utility model

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

Fig. 3 is the right elevation of Fig. 1

Fig. 4 is the circuit diagram of control circuit of the present utility model

Embodiment:

The utility model will be further described below in conjunction with accompanying drawing.

In Fig. 1, Fig. 2 and Fig. 3, valve body 1 is made by plastic tube, its section configuration is circular or square, valve body 1 outlet end is equipped with retaining board 2, retaining board 2 can be metal material, also can be that plastics are made, and retaining board 2 adopts latch to flexibly connect with valve body 1, be fixed with suction disc 13 in retaining board 2 middle and lower parts, suction disc 13 is preferably irony.In corresponding suction disc 13 fixed-site of valve body 1 outlet end permanent magnet 4 is arranged, permanent magnet is connected with valve body 1 by support 10.At the middle part of valve body base plate 3 is housed, base plate 3 can be made into integration with valve body 1, also can be fixed on the valve body 1 in addition, on base plate 3 mechanical transmission mechanism is housed, mechanical transmission mechanism is made up of the link rod plate 7 that micromachine 5, bent axle 6 and an end have rectangular hole, and micromachine 5 is a synchronous machine, rotating speed is 33 rev/mins, link rod plate 7 is contained in the plate box 8 that is positioned at the valve body bottom inside, and the hole on the bent axle 6 is connected with the axle of micromachine 5, and the bar on the bent axle 6 inserts in the rectangular hole of link rod plate 7.Rear side near link rod plate 7 in plate box 8 is equipped with limit switch 9, and the contact of limit switch 9 and link rod plate 7 are done crash-active.Micromachine 5 external control circuits 11, control circuit is made up of relay, diode, resistance, electric capacity, power socket 12 and limit switch 9 etc., can intelligent control.

Retaining board is subjected to the effect of permanent magnet that the exhaust port of valve body is sealed at ordinary times.When range hood was worked, intelligence control circuit detected range hood power.If power is below 60 watts, smart circuit detects and is illumination condition, if power more than 150 watts, smart circuit detects and is the smoke pumping state.Smart circuit does not start mechanical transmission mechanism under illumination condition, and intelligence control circuit startup mechanical transmission mechanism is pushed retaining board open under the smoke pumping state, ensures that the range hood smoke evacuation is unobstructed.Retaining board is kept opening-wide state under the wind-force effect, the mechanical transmission mechanism link rod plate is pushed behind the retaining board back and forth return open.When range hood stopped to discharge fume, retaining board was taken downwards after losing the wind-force effect, was subjected to the effect of permanent magnet that the exhaust port of valve body is sealed again.

Be further described below in conjunction with 4 pairs of control circuits of accompanying drawing.

Control circuit is made up of relay, diode, resistance, electric capacity, power socket and limit switch etc.

Socket CZ is the specified power supply socket of range hood, when range hood is worked, produces voltage on the resistance R 1, is filtered into direct current by diode D1 commutation capacitor C1 and supplies with relay J 1.When range hood threw light on, power generally was not more than 60 watts, and the undertension that produces on the resistance R 1 is so that relay J 1 is moved, and power is generally more than 180 watts when range hood is discharged fume, and the voltage that produces on the resistance R 1 can make relay J 1 action.Motor DD is by J1, the conducting of J2 contact, and drive crank-driven link rod plate moves reciprocatingly and pushes retaining board open.Simultaneously, diode D2, resistance R 2, capacitor C 2, relay J 2 are formed about one second delay circuit.Because the conducting of J1 contact, the J2 contact will disconnect about one second, because of the action XK limit switch of link rod plate is closed already, guarantee that the J2 contact disconnects remaining in operation of back motor DD.XK limit switch contact XK disconnects behind link rod plate to-and-fro motion return, and motor shuts down.

Claims

1, a kind of check valve for flue comprises valve body (1), retaining board (2) and control circuit (11), it is characterized in that: described retaining board (2) middle and lower part is provided with suction disc (13); Corresponding suction disc (13) fixed-site of described valve body (1) outlet end has permanent magnet (4), on the base plate of valve body mechanical transmission mechanism is housed; Described mechanical transmission mechanism is made up of the link rod plate (7) that micromachine (5), bent axle (6) and an end have rectangular hole, link rod plate (7) is contained in and is positioned at valve body bottom part board box (8), bent axle (6) is connected with micromachine (5), and the bar on the bent axle (6) inserts in the hole of link rod plate (7); Described micromachine (5) connection control circuit (11).

2, check valve for flue according to claim 1 is characterized in that: described control circuit (11) is made up of relay, diode, resistance, electric capacity, power socket (12) and limit switch (9) etc.; Described limit switch (9) is contained in the rear side of link rod plate.

3, check valve for flue according to claim 1 is characterized in that: described micromachine (5) is a synchronous machine, and rotating speed is 33 rev/mins.