CN2573808Y - Blade guide type check valve for common exhaust duct for dwelling - Google Patents

Abstract

The utility model discloses a blade guide type check valve, which relates to the technical field of a valve structure for blast control. The utility model is characterized in that the valve forms an arc shape, and vanes are symmetrically arranged on both sides of the valve. When an exhauster blows air, the valve is opened, and air flow is guided to smoothly transit from a horizontal direction to a vertical direction and than is exhausted upwards. When the exhauster does not blow air, the valve is closed under the action of the gravitational moment of the vanes, and therefore, smoke gas in an exhaust passage is prevented from refluxing and flowing back.

Description

The blade flow guide type check valve of the shared air outlet flue of dwelling house

1. technical field:

The utility model relates to the field of control blow valve door.

2. background technique:

At present, be used for the check valve of the shared air outlet flue of dwelling house,, can be divided into two kinds according to the position difference of valve hinges.A kind of is that rotating shaft is positioned at valve top (for example eccentric check valve); Another kind is that rotating shaft is positioned at valve bottom (for example heavy hammer type check valve).The eccentric check valve structure is simple, but when air displacement hour, the oblique below of water conservancy diversion direction of valve, the air-flow of discharge is upwards discharging swimmingly inadequately.As for the heavy hammer type check valve, its deficiency is:

(1) weight is positioned on the air-flow main passage, influences air-flow and discharges.

(2) valve is a slab construction, and the meeting steering flow bumps against and forms eddy current on the jet pipe.

(3) dismounting, cleaning, installation are all inconvenient.

3. summary of the invention: 3.1 technical problem to be solved in the utility model

(1) reduces sending into the resistance of air-flow.

(2) overcome and send into the formed vortex phenomenon of air-flow.

(3) dismounting, cleaning, installation are all made things convenient for.3.2 the technical solution adopted in the utility model

In order to solve above-mentioned technical problem, the utility model mainly carries out following improvement from valve, valve body aspect:

(1) valve

A. the curved shape of valve is positioned at valve body back port place, and bottom is connected with the hinge of valve body lower portion.

B. there is the blade of symmetry the valve both sides, blade for the gravitational moment perseverance of articulating point greater than the gravitational moment of valve for articulating point.

(2) valve body

A. valve body lower portion has hinge.

B. under any circumstance, no matter how the thickness of the outside decorating layer of air outlet flue changes, and can guarantee that valve is positioned at air outlet flue all the time, can cause front valve shell and rear valve body two-part to valve body, forward and backward two-part can entangle mutually, the flexible connection that can do to stretch.

C. in order to prevent that the liquid greasy dirt from flowing in the air outlet flue,, outage and catchment cup can be set in the front valve shell bottom in order to avoid discharging impacts to air-flow.3.3 the beneficial effects of the utility model.

(1) guide vane of two symmetries is set in the valve both sides, blade not only can make valve under action of gravity, close voluntarily, and, can be as the air flow guiding plate, steering flow flows forward, and the air-flow that suction fan is sent into can not cause resistance.

(2) valve adopts arcuate structure, and air-flow can very successfully be discharged straight up along the taintor valve surface, can not form eddy current.

(3) can with the supporting use of adjustable flow guide device (patent No. ZL01242039.5) of our invention, form coupling type between the two and connect, disassembly, cleaning are all very convenient.

(4) because valve body length is adjustable, therefore, can adjust valve body length according to the thickness of the outside decorating layer of air outlet flue, make valve be positioned at air outlet flue all the time, smooth and easy to guarantee exhaust; Suction fan short tube interface on the valve body is positioned at outside the decorating layer all the time, is connected with the exhaust hose of suction fan with convenient.

(5) the liquid greasy dirt will enter in the transparent catchment cup by outage, and the liquid greasy dirt of catchment cup is removed easily, can not impact the discharging of the air-flow in the air outlet flue.

4. accompanying drawing and embodiment

Fig. 1 is the side schematic view according to a kind of structural type that the utility model proposes.

Structural representation when Fig. 2 is valve open exhaust among Fig. 1.

Fig. 3 is before the valve body among Fig. 1, the structural representation when back two-part draw back.

Fig. 4 is that present embodiment cooperates that flow guide device is installed on the air outlet flue, the schematic representation during the valve open exhaust.

Fig. 5 is that present embodiment is directly installed on the air outlet flue, the schematic representation during the valve open exhaust.

With reference to accompanying drawing 1 and accompanying drawing 2, present embodiment is made up of following each several part:

1-valve 2-blade 3-valve body 4-front valve shell 5-rear valve body

6-decorative sheet 7-catchment cup 8-outage 9-suction fan air-supply short tube interface

The 14-hinge

In accompanying drawing 4, the 10th, exhaust duct, the 11st, decorating layer, the 12nd, present embodiment, the 13rd, flow guide device.

In the present embodiment, decorative sheet 6, catchment cup 7, outage 8, suction fan air-supply short tube interface 9, hinge 14 etc. are all same with known technology.Outage 8 wherein and catchment cup 7 are arranged on the bottom of front valve shell 4.Now only the structural feature and the assembly relation of valve 1, valve body 3 is further described.

(1) valve 1

Valve 1 is positioned at valve body 3 back port places, and bottom is connected with the hinge 14 of valve body 3 bottoms.The shape of valve 1 is like cydariform, and is similar to the shape that the aircarrier aircraft roof rack luggage rack is called.Valve 1 both sides burn-on respectively the symmetry sector 2, the center of gravity of blade 2 is positioned at the front of hinge 14 all the time.The center of gravity of valve 1, can swing on both sides, hinge 14 front and back: when valve 1 was opened, the center of gravity of valve 1 was positioned at the back of hinge 14; When valve 1 was closed, the center of gravity of valve 1 was positioned at the front of hinge 14.So just can guarantee that valve 1 is opened when suction fan is blown under wind blows, and steering flow carries out the transition to upwards discharge of vertical direction sleekly by substantially horizontal.When suction fan was not blown, valve 1 was closed under the gravitational moment effect of blade voluntarily, prevented that the smoke backflow in the air outlet flue from pouring in down a chimney.

(2) valve body 3

Valve body 3 is cavitys, and there is a hinge 14 in bottom.What it was identical with known technology is that inlet end is circular sanction face, can socket-connect with the exhaust hose of resident family suction fan, and exhaust end is the inequilateral hexagonal section.With known technology inequality be that exhaust cavity is made up of ante-chamber and back cavity, promptly form by front valve shell 4 and rear valve body 5; The back cavity bottom is little to tilt to the back upper place, and forward and backward two-part are the flexible connections that can do to stretch.

Claims (3)

1. a blade flow guide type check valve is made up of valve, valve body, it is characterized in that:

(1) the curved shape of valve is positioned at end, valve body rear portion, and bottom is connected with the hinge of valve body lower portion

(2) there is the blade of symmetry the valve both sides, blade for the gravitational moment perseverance of articulating point greater than the gravitational moment of valve for articulating point.

2. blade flow guide type check valve as claimed in claim 1 is characterized in that valve body is made up of front valve shell and rear valve body two-part, and forward and backward valve body entangles mutually, the flexible connection that can do to stretch.

3. one kind as claim 1 and 2 described blade flow guide type check valves, it is characterized in that in the front valve shell bottom outage and catchment cup being set.

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