CN209405862U - Environment-protective exhaust device - Google Patents

Abstract

The utility model relates to a kind of environment-protective exhaust devices, the problem of aiming to solve the problem that waste gas header exhaust gas recirculation, its key points of the technical solution are that: a kind of environment-protective exhaust device, including exhaust fan, exhaust pipe, filter, exhaust hose, check device, butterfly valve, hood, the hood is connected by hose with exhaust pipe, setting filter and exhaust fan in exhaust pipe, setting butterfly valve and check device above hood, butterfly valve is normally opened, when exhaust fan is opened, intraductal atmospheric pressure is reduced, check device is opened, exhaust gas enters exhaust pipe, intraductal atmospheric pressure restores normal when exhaust fan is closed, check device is automatically closed.

Description

Environment-protective exhaust device

Technical field

The utility model relates to the technical fields of environmental protection exhaust, more particularly, to a kind of station environment-protective exhaust device.

Background technique

In modern industrial production, it is often necessary to the techniques such as the welding for generating exhaust gas or cutting of attending the meeting, however in workshop The enclosure spaces such as interior can pollute air in workshop using the technique that can generate exhaust gas, open the exhaust equipment energy consumption of entire workshop too Greatly, effect is also very little, has at this moment just used the environment-protective exhaust device that can take the exhaust gas of a small range away, this device is all Be aggregated into a general pipeline, but when only have part environment-protective exhaust device to open on general pipeline and other devices be in close state when, Exhaust gas in general pipeline can be spread back in workshop from the device of closing, cause exhaust gas recirculation.

Utility model content

In view of the deficienciess of the prior art, can be arranged the purpose of this utility model is to provide a kind of with the environmental protection of non-return Device of air.

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of environmental protection with check function Exhaust apparatus can prevent exhaust gas recirculation.

The above-mentioned purpose of utility model of the utility model has the technical scheme that a kind of environmental protection exhaust Device, the bracket including exhaust apparatus ontology and the support exhaust apparatus ontology, the exhaust apparatus ontology includes successively connecting Exhaust pipe, exhaust hose, the hood connect, setting exhaust fan and filter in exhaust pipe, it is characterised in that: the hood with The exhaust hose junction is vertically arranged with check device.

By using above-mentioned technical proposal, when starting exhaust fan, exhaust gas enters hood and flows up along pipeline, leads to It is discharged after crossing filter filtering, when the device is closed, check device can be automatically prevented from the exhaust gas in general pipeline and be spread by device Workshop is returned, guarantees the cleaning of environment in workshop.

The utility model is further arranged to: the check device includes the cylinder being vertically arranged and is located in the cylinder Check ball, the cylinder lumen internal diameter is greater than the check ball outer diameter and the cylinder next week and along internal diameter is less than the check ball Outer diameter, the height of the cylinder are greater than the diameter of the sphere.

By using above-mentioned technical proposal, when starting exhaust fan, exhaust gas enters hood and flows up along pipeline, gives up Gas jacks up check ball during flowing, check ball and cylinder next week along separating, thus make exhaust gas from check ball and cylinder it Between gap be smoothly discharged, when closing blower, check ball self gravitation effect fall after rise, to make check ball and cylinder next week The contact surface of closed annular is formed between, to prevent the exhaust gas in general pipeline from spreading back workshop by device, is guaranteed in workshop The cleaning of environment.

The utility model is further arranged to: butterfly valve is arranged between the hood and check device.

By using above-mentioned technical proposal, butterfly valve can be turned off manually in check device failure, prevent exhaust gas recirculation, Butterfly valve can be closed when long when not used, uses opening butterfly valve often.

The utility model is further arranged to: limiting device is arranged on the butterfly valve folding handle.

By using above-mentioned technical proposal, the folding size of butterfly valve can choose, butterfly valve angle is carried out with limiting device Limitation prevents butterfly valve from changing folding angle under airflow function.

The utility model is further arranged to: the limiting device includes hinged upper handle and lower handle, is set about Handle is fixed on the axis that butterfly valve extends out, the convex block of upper handle end setting straight down, and position-arresting disk is arranged under lower handle, limits Position disk is equipped with several limit holes, and convex block is just inserted into limit hole.

By using above-mentioned technical proposal, upper handle and lower handle rotation drive butterfly valve rotation, and convex block is inserted into limit hole It is limited, operator can choose the folding angle of butterfly valve, and it is big to open and close the adjustable capacity of angle by control butterfly valve It is small.

The utility model is further arranged to: the filter be located at exhaust pipe and exhaust hose interface and exhaust fan it Between.

By using above-mentioned technical proposal, exhaust gas can be made to be filtered before through exhaust fan, prevent dust with air-flow It is moved in conveyance conduit, abrasion exhaust fan causes it to damage or be gathered in certain positions, influences the normal of environment-protective exhaust device Operation.

The utility model is further arranged to: the hood is the funnel-form that hollow cone adds hollow cylinder to form, and Hood bottom diameter is greater than upper-end inner diameter.

By using above-mentioned technical proposal, exhaust gas can be made more effectively to be absorbed and manufacture process simplicity.

The utility model is further arranged to: the bracket includes the center stand column being vertically arranged and is connected to the column Horizontally-supported column is connected with oblique pull column, the oblique pull column, horizontal branch between the horizontally-supported column and the center stand column end Dagger and center stand column connect into triangle.

Hood can be made more stable using the stability of triangle by using above-mentioned technical proposal.To sum up institute It states, the advantageous effects of the utility model are as follows:

1. effectively preventing the exhaust gas recirculation in general pipeline by the way that check device is arranged above hood；

2. by the way that butterfly valve and limiting device are arranged above hood so as to adjusting capacity size.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model.

Fig. 2 is the cross-sectional view of check device in Fig. 1.

Fig. 3 is the limit device structure schematic diagram of the utility model.

Fig. 4 is part A enlarged drawing in Fig. 3.

In figure: 1, hood；2, exhaust hose；3, exhaust pipe；4, butterfly valve；5, check device；6, check ball；7, it filters Device；8, exhaust fan；9, limiting device；10, position-arresting disk；11, upper handle；12, lower handle；13, limit hole；14, bracket；15, cylinder Body；131, convex block；141, center stand column；142, horizontally-supported column；143, oblique pull column.

Specific embodiment

With reference to the accompanying drawings and examples, the utility model is described in detail.

Environment-protective exhaust device, as shown in Figure 1, including exhaust apparatus ontology and the bracket for supporting the exhaust apparatus ontology 14, bracket 14 includes the center stand column 141 being vertically arranged and is connected to the horizontally-supported column 142 of the center stand column 141, the water Oblique pull column 143, the oblique pull column 143, horizontally-supported column are connected between 141 end of flat support column 142 and the center stand column 142 and center stand column 141 connect into triangle, exhaust apparatus ontology includes sequentially connected exhaust pipe 3, exhaust hose 2, exhaust Cover 1, the interior setting exhaust fan 8 of exhaust pipe 3 and filter 7, hood 1 are the funnel-form that hollow cone adds hollow cylinder to form, and 1 bottom diameter of hood is greater than upper-end inner diameter, and hood 1 and 2 junction of exhaust hose are vertically arranged with check device 5, When starting exhaust fan 8, exhaust gas enters hood 1 and flows up along pipeline, is discharged after being filtered by filter 7, filter 7 Between exhaust pipe 3 and 2 interface of exhaust hose and exhaust fan 8, when the device is closed, check device 5 can be automatically prevented from always Exhaust gas in pipe spreads back workshop by device, guarantees the cleaning of environment in workshop, and check device 5 includes the cylinder being vertically arranged 15 and the check ball 6 in the cylinder 15,15 inner cavity internal diameter of cylinder is greater than under 6 outer diameter of check ball and the cylinder 15 Week is less than 6 outer diameter of check ball along internal diameter, and the height of cylinder 15 is greater than the diameter of the check ball 6, and exhaust gas enters hood 1 And flowed up along pipeline, exhaust gas jacks up check ball 6 during flowing, and check ball 6 is separated with 15 next week of cylinder edge, thus Gap of the exhaust gas between check ball 6 and cylinder 15 is smoothly discharged, when closing exhaust fan 8, check ball 6 is made in self gravity With falling, to make check ball 6 and 15 next week of cylinder form the contact surface of closed annular between, to prevent useless in general pipeline Gas spreads back workshop by device, and 5 valve body of check device lower section is equipped with rubber sheet gasket, 6 He of check ball with 6 contact position of check ball Butterfly valve 4 can be arranged with better seal in rubber sheet gasket contact between hood 1 and check device 5, can be in check device failure When butterfly valve 4 is turned off manually, prevent exhaust gas recirculation, butterfly valve 4 can be closed when not used when long, use opening butterfly valve 4 often, butterfly valve 4 It opens and closes and limiting device 9 is set on handle.

Limiting device on butterfly valve is as shown in Figure 3 or Figure 4, and limiting device 9 includes hinged upper handle 11 and sets about Handle 12, lower handle 12 are fixed on the axis that butterfly valve extends out, and the convex block 131 of 11 end of upper handle setting straight down is set about Position-arresting disk 10 is set under handle, and position-arresting disk 10 is equipped with several limit holes 13, and convex block 131 is just inserted into limit hole 13, upper handle 11 and lower handle 12 rotation drive butterfly valve 4 rotate, convex block 131 be inserted into limit hole 13 in limited, operator can choose The folding angle of butterfly valve 4 opens and closes the adjustable capacity size of angle by control butterfly valve 4.

The embodiment of present embodiment is the preferred embodiment of the utility model, and not limitation is originally practical new according to this The protection scope of type, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by practical Within novel protection scope.

Claims (8)

1. a kind of environment-protective exhaust device, the bracket (14) including exhaust apparatus ontology and the support exhaust apparatus ontology is described Exhaust apparatus ontology includes sequentially connected exhaust pipe (3), exhaust hose (2), hood (1), setting exhaust in exhaust pipe (3) Fan (8) and filter (7), it is characterised in that: the hood (1) and the exhaust hose (2) junction are vertically arranged with only Return device (5).

2. environment-protective exhaust device according to claim 1, it is characterised in that: the check device (5) includes being vertically arranged Cylinder (15) and be located at the cylinder (15) in check ball (6), cylinder (15) the inner cavity internal diameter be greater than the check ball (6) outer diameter and the cylinder (15) next week are less than the check ball (6) outer diameter along internal diameter, and the height of the cylinder (15) is greater than institute State the diameter of check ball (6).

3. environment-protective exhaust device according to claim 1, it is characterised in that: the hood (1) and check device (5) it Between be arranged butterfly valve (4).

4. environment-protective exhaust device according to claim 3, it is characterised in that: limit is arranged on butterfly valve (4) the folding handle Position device (9).

5. environment-protective exhaust device according to claim 4, it is characterised in that: the limiting device (9) includes hinge connection Upper handle (11) and lower handle (12), lower handle (12) is fixed on the axis that butterfly valve extends out, and upper handle (11) end is set Convex block (131) straight down to be set, position-arresting disk (10) are set under lower handle, position-arresting disk (10) is equipped with several limit holes (13), Convex block (131) is just inserted into limit hole (13).

6. environment-protective exhaust device according to claim 1, it is characterised in that: the filter (7) be located at exhaust pipe (3) with Between exhaust hose (2) interface and exhaust fan (8).

7. environment-protective exhaust device according to claim 1, it is characterised in that: the hood (1) is that hollow cone adds sky The funnel-form of heart cylinder composition, and hood (1) bottom diameter is greater than upper-end inner diameter.

8. environment-protective exhaust device according to claim 1, it is characterised in that: the bracket (14) includes in being vertically arranged Heart column (141) and be connected to the center stand column (141) horizontally-supported column (142), the horizontally-supported column (142) with it is described It is connected with oblique pull column (143) between center stand column (141) end, the oblique pull column (143), horizontally-supported column (142) and center Column (141) connects into triangle.