CN2244541Y

CN2244541Y - Redusting hood with gas curtain type closed face

Info

Publication number: CN2244541Y
Application number: CN 95227020
Authority: CN
Inventors: 周杭生; 周廷军; 陈云龙
Original assignee: HANGZHOU OXYGEN MAKING MACHINE GROUP CO
Current assignee: HANGZHOU OXYGEN MAKING MACHINE GROUP CO
Priority date: 1995-11-16
Filing date: 1995-11-16
Publication date: 1997-01-08
Anticipated expiration: 2005-11-16

Abstract

The utility model relates to a dust removing device capable of preventing from harmful gas or outward diffusion of dust in operation, which is especially suitable for vibratory shakeout of a casting. The device comprises a casing of a suction pipe connected with a dust remover, an open at the bottom of the casing, a mounting hole arranged on the top, an observing hole on the side wall; a suction opening is positioned on one side of the mounting hole, and a blowing hole communicated with a blowing pipe is arranged on the other side wall remotely corresponding to the mounting hole. An air curtain formed between the blowing opening and the suction opening can effectively block hot air with dust to diffuse upwards, and the hot air is guided into a suction dust removing system, so that solves the problems that the existing dust removing hood has inconvenient operation, can not monitor operation process, causes the casting to has over vibration, has large equipment investment, is not durable, etc.

Description

The dust excluding hood of band air-curtain type sealing surface

The utility model relates to a kind of dusting equipment that can prevent the pernicious gas in the operation or harmful dust to external diffusion, especially for the dusting equipment of foundry goods vibrating shakeout.

As everyone knows, foundry goods under the severe jolt of vibratory shakeout machine, depend on its surperficial temperature up to the molding sand of several Baidu will break, defeated and dispersed, produced a large amount of harmful dusts and pernicious gas thus.The dusting equipment that is used to prevent its diffusion at present has two kinds on side-draught hood and totally-enclosed cover.Side-draught hood is an opened type housing that is connected with the air draught dust pelletizing system, and it places the side of vibratory shakeout machine.Its shortcoming is that voice is big, efficiency of dust collection is low, and when source of pollution are big more apart from cover mouthful distance, the gas stream of pollution that the quilt cover mouth is caught accounts for a ratio of covering mouth exhausting amount will be more little, and for example the air-flow velocity on the axis of one times of diameter of air suctiton inlet has dropped to 10% of inlet scoop wind speed.Totally-enclosed cover has comprised separable two parts case, and wherein a part of case is fixed and is connected with dust collecting system, partly then can moves in orbit in addition, and vibratory shakeout machine is installed in the cover.During totally-enclosed cover work, movably this part case is removed, cover is opened, by driving foundry goods is hung onto on the shake out machine then, hold after foundry goods breaks off relations, driving is left away, mobile again case closes up cover, and around at this moment covering and top is closed entirely, and the dust that vibrating shakeout produced is pumped in the dust pelletizing system.Though totally-enclosed cover has dust removing effects and noise reduction preferably, but still has following shortcoming: 1) foundry goods needs to break off relations with its driving of handling, and case needs folding simultaneously, so inconvenient operation and time-consuming; 2) can not monitor the knockout situation of foundry goods, so cause the mistake of foundry goods to shake easily; 3) floor area is big, investment is big and movement parts is fragile, maintenance load is big.

The purpose of this utility model is to overcome above-mentioned shortcoming of the prior art: provide a kind of good dedusting effect, noise process low, easy and simple to handle, that can conveniently observe vibrating shakeout to shake to prevent that foundry goods from crossing, and equipment investment is low, the dust excluding hood of the band air-curtain type sealing surface of long service life.

The dust excluding hood of band air-curtain type sealing surface is a case that has the aspiration channel that links to each other with dust exhaustor, its feature is that the case bottom has inspection door with sidewall uncovered, that the case top has installing port, case, the opening of aspiration channel, be the side that the inlet scoop is positioned at installing port, be provided with a blowing mouth that is communicated with the blowing pipeline of band air curtain blower fan on the sidewall in addition with the distant right installing port in inlet scoop.

The dust excluding hood of band air-curtain type sealing surface is by its uncovered vibratory shakeout machine that covers in bottom, the foundry goods for the treatment of knockout hangs on the interior shake out machine of cover from the front by the mouth on the case, the wind that blowing mouth blows out forms the sealing surface of air-curtain type on installing port, and is sucked by the inlet scoop together with pernicious gas, the harmful dust that the vibrating shakeout process generates.The air-flow that sucks is introduced the dust exhaustor dedusting by air-suction duct, last exhaust to atmosphere.

The utility model dust excluding hood can be provided with a secondary inlet scoop above the inlet scoop, and the end in addition that makes the air curtain aspiration channel that is communicated with it is connected to the inlet end of air curtain blower fan, so that curtain air flow forms circulation, that is the wind that air curtain blower fan exit end is sent blows out through blowing pipeline, blowing mouth with becoming air-curtain type, sucked by secondary inlet scoop again then, get back to the air curtain blower fan through the air curtain aspiration channel.

Inlet scoop in the utility model dust excluding hood, secondary inlet scoop and blowing mouth preferably adopt the width of the length of flat opening and opening near installing port, so that air curtain is positioned at a plane, and can evenly cover installing port.

To and contrast accompanying drawing by embodiment below, the utility model will be further described below.Have in the accompanying drawing:

Fig. 1-Fig. 4 is the constructional drawing of the utility model dust excluding hood first embodiment, and wherein Fig. 1 is a block diagram, and Fig. 2 and Fig. 3 are respectively its front elevation and birds-eye vieies, and Fig. 4 is the A-A cutaway view among Fig. 2;

Fig. 5-Fig. 7 is the constructional drawing of second embodiment of the utility model dust excluding hood, and wherein Fig. 5 is a block diagram, and Fig. 6 and Fig. 7 are respectively its front elevation and birds-eye vieies.

First embodiment of the utility model dust excluding hood can see from Fig. 1-Fig. 4, have an aspiration channel 3 that is connected with dust exhaustor 4 on the case, its top has installing port 11, the front has inspection door 10, inlet scoop 2 is positioned at the side of installing port, and blowing mouth 5 is arranged on the side and distant right with inlet scoop 2 in addition of installing port.The termination in addition of the blowing pipeline 6 that is communicated with blowing mouth has air curtain blower fan 7.The bottom of case 1 is uncovered, it can cover vibratory shakeout machine 13 (vibratory shakeout machine among the figure is represented with long and two-short dash line), foundry goods 12 (also representing with long and two-short dash line among the figure) is hung in the case by driving, when vibratory shakeout machine is worked, then can open air curtain blower fan 7, at this moment from blowing mouth 5, blow out wind by blowing pipeline 6, thereby on installing port, formed from blowing mouth 5 to the inlet scoop 2 gas hood, installing port is sealed, so harmful dust that is produced in the case, pernicious gas rises with the thermal current of high hot-cast part, after being obstructed on the air curtain sealing surface promptly in company with the deflection of air curtain sense of motion, and inhaled volume by air curtain and bring inlet scoop 2 in, change dust exhaustor 4 over to by air-suction duct 3 at last.Whole knockout process can monitor from the top view hole of case, in case foundry goods is done unnecessary vibration; Simultaneously also because sweeping across of caused thermal current that makes progress of high temperature foundry goods and curtain air flow can not be overflowed harmful dust, pernicious gas from inspection door.

Second embodiment of the utility model dust excluding hood can see from Fig. 5-Fig. 7.It with embodiment one difference is: on inlet scoop 2, also be provided with secondary inlet scoop 2 ', and secondary inlet scoop connects by the entrance point of air curtain aspiration channel 8 with air curtain blower fan 7, the curtain air flow of cleaning is recycled, thereby reduced the processing air quantity of air draught dust pelletizing system and cut down the consumption of energy.

The shape of the inlet scoop in the utility model dust excluding hood, blowing mouth, secondary inlet scoop is oblong, and short transverse becomes flat opening widely less than its length, and its length a approaches the width b of installing port.

The advantage of the dust excluding hood of band air-curtain type sealing surface is: 1) because case band installing port and inspection door, the foundry goods turnover is convenient and do not need and its driving of handling is broken off relations, and is therefore easy to operate, save time and laborsaving; 2) the vibrating shakeout process can monitor from inspection door, therefore can guarantee the quality of foundry goods desanding and foundry goods is crossed to shake; 3) efficiency of dust collection height, the air curtain that especially is provided with on installing port can stop effectively that the dust-laden thermal current upwards spreads and induces it to enter the inlet scoop; 4) compare with existing totally-enclosed cover, it does not have moving member, and therefore firm in structure, durable, maintenance load is little, and equipment investment is low, floor area is little.

Claims

1, a kind of dust excluding hood of band air-curtain type sealing surface of the case (1) that includes an aspiration channel (3) that links to each other with dust exhaustor (4), it is characterized in that: the case bottom has inspection door (10) with the sidewall of uncovered, case top band installing port (11), case, the opening of aspiration channel is the side that inlet scoop (2) is positioned at installing port, is provided with a blowing mouth (5) that is communicated with the blowing pipeline (6) of band air curtain blower fan (7) on the sidewall in addition with the distant right installing port in inlet scoop.

2, dust exhaustor as claimed in claim 1 is characterized in that: on said inlet scoop (2) a secondary inlet scoop (2 ') can be set, and make the end in addition of the air curtain aspiration channel (8) that is communicated with it be connected to the inlet end of air curtain blower fan (7).

3, dust excluding hood as claimed in claim 1 or 2 is characterized in that: said inlet scoop (2), secondary inlet scoop (2 '), blowing mouth (5) all can adopt flat opening.