CN2479412Y

CN2479412Y - Air curtain type air-suction cover

Info

Publication number: CN2479412Y
Application number: CN 01221573
Authority: CN
Inventors: 许富昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-14
Filing date: 2001-04-14
Publication date: 2002-02-27
Anticipated expiration: 2011-04-14

Abstract

The utility model relates to an airy curtain-style sniff cover, wherein a set of air curtain facility on the basis of the common exhaust cover is added and the two parts are combined organically to be designed into a novel sniff cover. The cover generates a sealing air curtain when in use to restrict the harmful gas in the space of the cover, and the harmful gas is discharged by the exhaust system, and the harmful gas is prevented spreading out of the cover by the sub-pressure that is formed in the cover when discharging. At the same time because the sealing curtain is formed by the air current, which does not hamper the normal operation and continuous manufacture of the device, the cover adopts a novel ideal environmental protection technology for opening space and gathering partial harmful gas.

Description

A kind of air curtain formula air-suction cover

The utility model relates to a kind of air curtain formula air-suction cover that open space is collected local pernicious gas that is used for.

In the sewage disposal process of municipal sewage plant, the difference of sewage technological process all can give out certain foul smell, and these foul smell are not generally handled in the past, directly are discharged in the atmosphere.Along with the raising of environmental protection demand for development and the progress of environmental science and technology; at present the improvement of sewage treatment plant's foul smell has been put on the agenda; especially resemble between the grid of sewage treatment plant, pumping plant etc. produces the more serious place of foul smell; as not administering, workman's working environment and the physical and mental health that influences them will be worsened.But sewage treatment plant produces place or the operating point of mechanical work or the open space of foul smell, does not allow under the multiple situation or does not have condition to adopt the way of enclosed hood to carry out collection and treatment.Handle as the foul smell to operating points such as the grid between grid, spiral tapping machines, mostly the past is to adopt workshop general ventilation ventilation or handles with the method for open hood exhaust.This method, not only capacity big, strengthened the engineering cost investment.And main be treatment effect bad, can not tackle the problem at its root.

At above-mentioned situation, our research and design a kind of air curtain formula air-suction cover, be used for collecting the foul smell that local foul smell (source) distributes, obtained more satisfactory effect.Found a kind of being used for not allow to adopt enclosed hood to collect the feasible method of local pernicious gas.This air curtain formula air-suction cover, profile is similar with common hood, and different is: be on the basis of common hood, set up the facility of a cover generation air curtain, and itself and original hood are organically combined, constitute a complete air curtain air-suction cover.This air-suction cover is installed to the suitable place of odor source, again it is linked the odor treatment system.Like this, when the air curtain air-suction cover is worked, can form the air curtain of a sealing around cover, and local foul smell (source) is closed itself and ambient atmosphere are isolated, the foul smell that is closed is delivered to the improvement of foul smell processor via gas extraction system again.

Develop above-mentioned air curtain air-suction cover and be based on following thinking: design an air curtain foul smell (source) is closed, limit the space that exists of foul smell.The negative pressure that forms in the cover when utilize getting rid of foul smell again, prevent foul smell to around diffusion, so not only reached the purpose of collecting the discharging foul smell, but also fundamentally ensured air quality all around.Because heavy curtain is formed by air stream, just can not influence the normal running and the operation of production equipment simultaneously yet.And this method has been because of having improved the concentration of emission of collecting foul smell, thereby also just reduced its capacity, and this can directly cause dwindling the scale and the construction investment of odor treatment system again, and improve this systems technology economic benefit.Therefore say that this application technology is feasible more advanced.

Below in conjunction with drawings and Examples, the utility model is described in further detail:

Fig. 1 air curtain air-suction cover top view, front view

Fig. 2 air curtain air-suction cover N-N sectional drawing, Adjustable air port drawing.

Fig. 3 air curtain air-suction cover fundamental diagram

By Fig. 1 find out the air curtain air-suction cover by cover body 1, exhaust outlet 2, ventilation blower 3, ajutage 4, blower fan seat board 5, girth member 6, surge tank 7, surge tank dividing plate 8, air outlet 9, the air port is adjustable wall 10, regulate bolt 11, guide vane 12 etc. and constitute.It is to have set up an annular surge tank 7 to be provided with blower fan 3 and the ajutage 4 that is connected with annular surge tank 7 with annular air supply mouth 9, on cover body 1 around general exhaust cover body 1, like this, when ventilation blower 3 work, air is sent into annular surge tank 7 by ajutage 4, send via annular air supply mouth 9 again, hood around form a sealing air curtain 16, constituted an air curtain formula air-suction cover with exhaust cover body 1.Wherein surge tank dividing plate 8 is divided into 2 with donought one, utilizes girth member 6, being arranged in to reinforce, to guarantee the firm and steady operation in air port in conjunction with the air port again.

By Fig. 2 air curtain air-suction cover sectional drawing and Adjustable air port drawing find out with annular surge tank 7 annular tuyere 9 that designs and produces that combines be adjustable.It is to ensure the critical component that forms even air curtain.Adjustable air port 9 is located at the outside around the bottom surface of annular surge tank 7, is made of parts such as fixed wall and movable wall 10, guide vanes 12.Air port cross dimensions S between movable wall 10 and fixed wall can regulate by the adjustable bolt 11 that a wing bolt is made, and is used for changing the intensity and the sphere of action of air curtain.

Being used for the fundamental diagram of gathering screw mucking machine foul smell by Fig. 3 air curtain air-suction cover finds out; Discharge when smelly slag that mucking machine 17 will be carried 14 and to drop in the process of the car 13 that gathers materials, one strong foul smell 15 will be given out, the air curtain 16 that these foul smell (source) are produced by the air curtain air-suction cover is closed and makes it and isolates all around, delivers to the foul smell treatment system via discharge duct then and administers.This embodiment has demonstrated fully following distinguishing feature: keep negative pressure at first it covers in pumping process, prevented that foul smell to the diffusion of the cover external space, both having reached the purpose of collecting foul smell, improved the ambient air quality again, the workshop condition situation is clearly better.Secondly because the heavy curtain of sealing foul smell (source) is the formation of air stream, and it does not influence the propelling of the car that gathers materials and releases operation, has ensured the continuous production of mucking machine, this is the characteristics that other any solid air-suction cover does not have.Moreover, increased the concentration of collecting foul smell because foul smell (source) is closed in the limited local space, make the capacity of collecting foul smell reduce to 1/4～1/5 of original open hood.Effectively dwindle the scale and the construction investment of odor treatment facility, and improved their technical economic benefit.Practice shows that this method is feasible, success, advanced.

Find out that by the foregoing description it is representative that this foul smell collection method has certain typical case, can promote the use of fully in other industrial production field.This be because: shape of (1) this kind air-suction cover and big I design and produce according to the process conditions of odor source, and size is changeable, and shape or side or circle can satisfy the difference in functionality conditional request.(2) the ventilation blower facility of this air-suction cover both can be made with the hood global design that combines, and also can install according to producing the independent flexible design of physical condition, satisfy the specific instructions for use of different user.(3) because the intensity and the sphere of action of air curtain are adjustable, enlarged the setting height(from bottom) range of application, so general factory all can effectively use.Therefore this method can promote the use of the local collection and treatment that produces the pernicious gas pollution sources in all open spaces.Thereby this practical technique has brilliant market developing prospect and good economic benefit.Simultaneously again because it is an environmental protection application technology, so its exploitation and apply, will bring good benefits in environment and social benefit again.

Claims

1 one kinds of air curtain formula air-suction covers, it is characterized in that on a common hood basis, setting up a cover air curtain facility and make the two organically combine air curtain air-suction cover of formation, when its work, produce the air curtain of a sealing all around and pernicious gas (source) is limited to the confined space in the cover.

2 according to claim 1 described air curtain air-suction cover, it is characterized in that being provided with around this air-suction cover an annular surge tank.

3 according to claim 1,2 described air curtain air-suction covers, it is characterized in that being provided with around this air-suction cover an annular Adjustable air port that combines with surge tank.