CN2874168Y

CN2874168Y - Non-return valve of smoke discharge gas

Info

Publication number: CN2874168Y
Application number: CN 200520143647
Authority: CN
Inventors: 王晓东; 燕启峰; 王胜男
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-22
Filing date: 2005-12-22
Publication date: 2007-02-28
Anticipated expiration: 2015-12-22

Abstract

The utility model discloses a check valve for the venting of flue gas. The main body of the check valve is a bend pipe; a horizontal or a longitudinal check valve plate is positioned in the bend pipe; nuts that can fix together the check valve and the flue pipe is set in the bend pipe. The airflow passage of this utility model is an arc bend pipe; an air intake is connected with the vent pipe of the horizontal ventilator; an air outlet is set in the vertical direction similar to that of the airflow, so as to avoid the hedging of air flows in the pipeline and ensure that the residual oil fume and contaminated gas would be discharged completely. Because the sealing in between the axis of the check valve and the wall of bend pipe that contacts relatively with the valve is effective, the cross and back blow of the oil fume and waste gas can be prevented. This utility model, with simple structure, is able to discharge the waste gas smoothly, purify the indoor air and improve the living environment of people. The check valve in this utility model can be made of high-intensity flame retardant plastic or PVC materials. Besides, this utility model has the advantages of simple installation, convenient cleaning, lower cost and longer service life.

Description

Non-return valve of smoke discharge gas

Technical field: the utility model relates to a kind of check valve, relates in particular to a kind of Non-return valve of smoke discharge gas that is used on the indoor gas exhaust duct.

Background technique: the user is by the oil smoke in the flue gas exhaust pipeline drain chamber in the present residential building, dirty gas, peculiar smell waits the living environment of improving people, existing purging system volume is excessive, complex structure, little and the exhaust of air displacement has some setbacks, be prone to phenomenons such as taint of odour smoke blowing and flue gas pour in down a chimney between the user, although some smoke-ejecting pipe is equipped with check valve and is used for the phenomenon of avoiding flue gas to pour in down a chimney, yet the airflow direction in the air outlet airflow direction of this check valve and the fume pipe liquidates, and forms whirlpool easily, causes smoke evacuation to have some setbacks, because the sealing effect of this check valve is very poor, also causes flue gas to pour in down a chimney easily.

Summary of the invention: in order to overcome the deficiency that above technology exists, the purpose of this utility model provides that a kind of volume is little, simple in structure, air displacement is big, smooth and easy, the non-return effective Non-return valve of smoke discharge gas of exhaust.

The technical solution of the utility model realizes in the following manner:

A kind of Non-return valve of smoke discharge gas, this check valve main body is a bend pipe, and contrary valve block of horizontal stop or vertical non-return valve block are installed in the bend pipe, has the set screw nut that Non-return valve of smoke discharge gas and flue gas exhaust pipeline are fixed together outside the bend gas intake mouth.

Be connected with one below the check valve and connect the lubricating cup that connects of containing the maimed oil that condenses in the bend pipe.

Non-return valve block is two semicircle valve blocks, two semicircle check valve sheets on same axle or on two axles and two axles contact relatively, the two ends of axle are fixed on the bend pipe wall.

Non-return valve block is two half elliptic check valve sheets, two square valve blocks or two quadrant shape valve blocks.

Non-return valve block is square multi-disc valve block, and the check valve bobbin contacts relatively, and the two ends of axle are fixed on the bend pipe wall convex edge.

Non-return valve block is the monolithic valve block.

The contrary valve block of horizontal stop places near the bend pipe air outlet, and the contrary valve block edge of horizontal stop coincide up and down with bend pipe wall convex edge and tightly contacts.

Vertical non-return valve block places near the bend gas intake mouth, and coincideing about vertical non-return valve block edge and bend pipe wall convex edge tightly contacts.

Non-return valve block places between bend gas intake mouth and the air outlet.

Directly over the check valve bobbin, be fixed with positive stop on the bend pipe wall.

Good effect of the present utility model is:

1, simple in structure, can make the smooth and easy discharge of waste gas, the air in the purifying chamber improves people's living environment.

2, the air-flow path of check valve is a curve bend, suction port is connected with the range hood outlet pipe of substantially horizontal, the air outlet is identical with airflow direction and straight up, avoid with pipeline in air-flow liquidate, guarantee that residual oil smoke or the dirty gas in the purging system can fully be discharged.

3, the obturation effect between contrary valve block of counter stop and the bend pipe wall is fine because the axle of non-return valve block connects, therefore the phenomenon that can avoid oil flue waste gas to go here and there mutually and pour in down a chimney.

4, check valve can be used high-strength fire-retarding plastics, PVC, metal or the dirty material of other oily dirt frees, install simple and convenient, easily removable and washable, cheap, long service life.

Description of drawings:

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

Fig. 2 is two semicircle valve structure schematic representation for the non-return valve block of the utility model.

Fig. 3 is two half elliptic valve structure schematic representation for the non-return valve block of the utility model.

Fig. 4 is two square valve structure schematic representation for the non-return valve block of the utility model.

Fig. 5 is two quadrant shape valve structure schematic representation for the non-return valve block of the utility model.

Fig. 6 is square multi-sheet structure schematic representation for the non-return valve block of the utility model.

Fig. 7 is a half elliptic monolithic structure schematic representation for the non-return valve block of the utility model.

Embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing:

As seen from Figure 1, the utility model is that main body is a bend pipe, and horizontal check valve or vertical check valve 2 are installed in the bend pipe, has the set screw nut 3 that check valve and flue gas exhaust pipeline are fixed together outside bend gas intake mouth 4.

It can also be seen that by Fig. 1, be connected with below the check valve one connect contain the maimed oil that condenses in the bend pipe connect lubricating cup 5.

On the bend pipe wall,, be used for preventing when air-flow is excessive the excessive phenomenon of upset when non-return valve block 2 upwards stacks over against positive stop 6 of upper fixed of check valve bobbin 7.

As seen from Figure 2, non-return valve block 2 is two semicircle valve blocks, two semicircle check valve sheets on same axle or on two axles and two axles 7 contact relatively, spools 7 two ends are fixed on the bend pipe wall.

By Fig. 3, Fig. 4, Fig. 5 as can be seen, non-return valve block 2 is two half elliptic valve blocks, two square valve blocks or two quadrant shape valve blocks.

As seen from Figure 6, non-return valve block 2 is square multi-disc valve block, and check valve bobbin 7 contacts relatively, and the two ends of axle 7 are fixed on the bend pipe wall.

As seen from Figure 7, non-return valve block 2 is the monolithic valve block.

When waste gas when the check valve, non-return valve block superimposed the opening that make progress automatically under the effect of air-flow makes check valve be in the complete opening state, waste gas is discharged from after changing airflow direction by check valve smoothly.

After waste gas was discharged from, range hood quit work, and the non-return valve block of check valve is because the effect of the gravity of self separately drops down onto original state from the trend both sides, close the check valve current path, at this moment, check valve is in air-tight state, has avoided smoke blowing, the taint of odour between family and the family and has poured in down a chimney phenomenon.

Claims

1, a kind of Non-return valve of smoke discharge gas, this check valve main body is a bend pipe, it is characterized in that: contrary valve block of horizontal stop or vertical non-return valve block (2) are installed in the bend pipe, outside bend gas intake mouth (4), have the set screw nut (3) that Non-return valve of smoke discharge gas and flue gas exhaust pipeline are fixed together.

2, Non-return valve of smoke discharge gas according to claim 1 is characterized in that: be connected with below the check valve one connect contain the maimed oil that condenses in the bend pipe connect lubricating cup (5).

3, Non-return valve of smoke discharge gas according to claim 2, it is characterized in that: non-return valve block (2) is two semicircle valve blocks, two semicircle check valve sheets are on same axle or on two axles and two axles (7) contact relatively, and the two ends of axle (7) are fixed on the bend pipe wall.

4, Non-return valve of smoke discharge gas according to claim 2 is characterized in that: check valve (2) sheet is two half elliptic check valve sheets, two square valve blocks or two quadrant shape valve blocks.

5, Non-return valve of smoke discharge gas according to claim 2 is characterized in that: non-return valve block (2) is square multi-disc valve block, and check valve bobbin (7) is contact relatively, and the two ends of axle (7) are fixed on the bend pipe wall.

6, Non-return valve of smoke discharge gas according to claim 2 is characterized in that: non-return valve block (2) is the monolithic valve block.

7, according to the described arbitrary Non-return valve of smoke discharge gas of claim 1-6, it is characterized in that: the contrary valve block of horizontal stop places near the bend pipe air outlet (1), identically about the contrary valve block edge of horizontal stop and bend pipe wall convex edge tightly contacts.

8, according to the described arbitrary Non-return valve of smoke discharge gas of claim 1-6, it is characterized in that: vertical non-return valve block places near the bend gas intake mouth (4), and coincideing about vertical non-return valve block edge and bend pipe wall convex edge tightly contacts.

9, according to the described arbitrary Non-return valve of smoke discharge gas of claim 1-6, it is characterized in that: non-return valve block places between bend gas intake mouth (4) and air outlet (1).

10, Non-return valve of smoke discharge gas according to claim 9 is characterized in that: on the bend pipe wall over against the positive stop of upper fixed (6) of check valve bobbin (7).