CN101992426B

CN101992426B - Blast room

Info

Publication number: CN101992426B
Application number: CN201010250996.3A
Authority: CN
Inventors: 间濑惠二; 菊地亮司
Original assignee: Fuji Manufacturing Co Ltd
Current assignee: Fuji Manufacturing Co Ltd
Priority date: 2009-08-10
Filing date: 2010-08-09
Publication date: 2015-09-09
Anticipated expiration: 2030-08-09
Also published as: TWI500483B; US20110034119A1; JP5401206B2; TW201105462A; JP2011036950A; KR20110016392A; CN101992426A

Abstract

A kind of blast room, provides the unit ventilators (30) that a collecting unit of dust (20) and one one master unit (10) being ventilated at sandblasting duration of work makes a master unit ventilate during a painting step.One sidewall (11) of described master unit possesses the opened/closed parts (11b) of entrance described in an entrance (11a) and an opened/closed, there is provided described collecting unit of dust so that outstanding to a base plate (16) from a top board (15) in the position closer to relative another sidewall (12) of sidewall therewith, to separate the inside of master unit, and a working space (10a) and a ventilation shaft (10b) are defined in master unit.One top board (15) be positioned at above a working space has the suction hole (17) be formed at wherein, and provides an inlet port be communicated with between described collecting unit of dust with described ventilation shaft (22).Described sidewall possesses an opening be communicated with between unit ventilators with ventilation shaft (12a), and during blasting craft, utilize collecting unit of dust to ventilate when entrance is closed, and during painting, utilize when entrance is opened this unit ventilators to ventilate.

Description

Blast room

Technical field

The present invention about a kind of blast room for blasting craft or operating room (in this manual, referred to as " blast room "), and in specific words, the blast room of working space is formed about a kind of inside, described working space is enough large to make when carrying out blasting craft to the relatively large-sized workpiece for process, and one or more worker can enter and carry out work together with workpiece; And described working space is through adjusting with by not only allowing to carry out blasting craft but also also allow to paint to workpiece in the same space after blasting craft and be suitable for blasting craft and japanning.

In the present invention, term " blasting craft (blasting process) " is with most broad sense application; It comprises all kinds technique, such as be called that dry-type jetting or projection (hereinafter referred to as " spray (ejection) ", also comprise projection) they's technique, wherein abrasive material is to spray with the fluid-mixing form of compressed air etc., is such as called they's technique that sandblasting and pearl hit; And in addition, described term comprises and wherein projects material and sprayed by centrifugal force, abrasive material or projection material by impact rotary blade to spray etc. in technique any one.

In addition, according to above-mentioned blasting craft, except for polishing or cutting object abrasive grains and other abrasive material except, abrasive material of the present invention also extensively comprises the what is called " shot (shot) " of spraying for the object of imparting workpiece residual stress, such as steel ball, bead/plastic bead/ceramic bead etc., and powder or particle matter, the kind shell such as sprayed for other object various or plant core.

Background technology

The blasting craft to workpiece pulverized powder or particle matter is utilized in various field, such as abrasive material and workpiece is made to collide to cut or the technique of clean workpiece by abrasive blasting, or by the they's technique making the shot of such as steel ball and workpiece collide to give workpiece residual stress.

When this blasting craft, because of institute's abrasive blasting diffusion or collide by abrasive material and workpiece dust that powder etc. that the crushing powder, the cut workpiece that produce produce forms and can cause pollution to working environment.Because need to carry out collecting to recycle abrasive material after use abrasive material, so usually form the operating room isolated with its complementary space, and carry out work in this working space.

In addition, during painting, evaporation etc. because of the solvent contained by the diffusion paint particles that sprayed by sprayer etc. or paint also can cause the pollution to surrounding environment, and simultaneously, contrary with this situation, if the impurity such as such as powder dust particle enter working space from surrounding environment and are adhered to paint, then the quality of painting can reduce greatly.Therefore, in order to prevent above situation, forming the operating room isolated with its complementary space, and carry out painting step in this working space.

When above-mentioned blasting craft is carried out as the step before japanning, a kind of equipment structure that can carry out painting step after blasting craft is also proposed.As can to an embodiment of the equipment of the high-pressure gas container such as such as LP gas container (cylinder) japanning, after reexamining container and and then after removing and being infected with, a kind of equipment is also proposed, it possesses cell for carrying out blasting craft and for carrying out the cell of painting, and through construction with while making the workpiece carried by conveyer or its analog stand blasting craft, workpiece, by blasting craft cell, carries out paint (No. H08-28793rd, Japanese Unexamined Patent Publication (case)) subsequently after being delivered to japanning cell.

As in ' 28793 above-mentioned, if relatively little for the workpiece of process, there is same shape, and need same treatment, as LP cylinder, be then provided for respectively blasting craft cell and for the cell of painting and by workpiece is delivered to different cell carry out each step can be relatively easy to carry out described technique.

But, if such as workpiece is comparatively large and for manufacturing article on a small scale, be then usually different in each technique for the material of process workpiece or shape and process detail; And worker usually manually carries out technique by each workpiece of standardization flow process process to being not suitable on the assembly line of such as above-mentioned conveyer.

Therefore, when carrying out technique to this kind for the workpiece of process, needing worker can enter together with workpiece and carrying out the large scale operating room being equipped with relatively large working space of work.Therefore, if provide independent operating room to blasting craft and japanning respectively, be then necessary to guarantee very big installing space and the equipment prepared needed for each technique, and therefore, will larger initial investment be needed.Therefore, in tiiese cases, carry out blasting craft by having the blasting craft supplier be suitable for facility or equipment that large workpiece carries out blasting craft respectively, and paint by having the painter being suitable for facility or the equipment of painting to large workpiece, both carry out with cooperation mode.

But, if work is shared by this way between the different process supplier of individual steps, then all must carry/shift workpiece for each job step, thus produce loss correlation time or financial burden.

In addition, if expend longer carrying or transfer time between blasting craft and japanning, then may cause on the surface of the workpiece and be infected with, and in addition, the pollutant of such as grease or its analog also may be adhered on surface of the work due to workpiece and the contact between worker, conveyer etc. during carrying or transfer.When cause in this way be infected with or adhesion pollution thing time, need to carry out before painting removing and be infected with or the work of pollutant.

According to mentioned above, when carrying out blasting craft to large workpiece as pretreatment before japanning, if can to paint in the same operating room carrying out blasting craft after carrying out blasting craft to workpiece and without the need to mobile or transfer workpiece, then this is favourable.

But, be present in the operating room carrying out blasting craft for the abrasive material of blasting craft or the dust etc. that causes during blasting craft, and therefore, paint to workpiece when any measure if do not take in this operating room, then abrasive material or dust may be adhered on paint as impurity.The adhesion of impurity can reduce the quality of japanning greatly, and in some cases, may have to repeat japanning.

In addition, when the abrasive material sprayed in collection also recirculated work room, if this abrasive material is painted pollution, then may occur owing to painting the adhesion caused between the painted of abrasive material or abrasive particle, and may collect after use abrasive material and recycle abrasive material.

In addition, because the inside of operating room is atomized diffusion dust or the particulate contamination of paint during blasting craft with japanning, so need to make operating room ventilate to make it keep clean.Need discharge from operating room to remove before contaminated air the dust of paint or the fact of particulate (it is cause the material of pollution) for the operating room carrying out blasting craft and japanning common.

But, the pollution during blasting craft in working space by by comminution material or cut workpiece the dust that forms of the powder etc. that produces cause, and in addition, the pollution during painting in working space causes by by spraying the particulate waiting the atomization of spraying to paint.Because the material polluted is different as described above, so be suitable for the method for material that the method for ventilating and seizure pollute is different between blasting craft from japanning.

Because what time above, so blasting craft and japanning are not carried out in same operating room, and in addition, not yet propose through construction to make it possible to carry out the operating room of both blasting craft and japanning.

Dream up the present invention to overcome the problem in above-mentioned known technology, and used the present invention, likely in same operating room, sequentially carry out blasting craft and japanning.

Summary of the invention

The object of the invention is to, a kind of blast room that can be reached ventilation by applicable method of ventilation and the method being suitable for catching in each step of blasting craft and japanning the material polluted is provided, therefore allows to paint after blasting craft in the same space.

Reference number used in general introduction of the present invention and detailed description of the invention will be described below.These reference numbers are for illustrating the correspondence between the description in claim and the description in detailed description of the invention, and certainly, it is also not used in the technology category explaining claim of the present invention with ways to restrain.

In order to reach above target, blast room 1 of the present invention comprises:

Master unit 10;

Collecting unit of dust 20; And

Unit ventilators 30,

Wherein master unit 10 uses sidewall 11 to 14, top board 15 and base plate 16 to define the space with rectangular shape etc.,

Any one sidewall 11 of master unit 10 possesses permission and workpiece W is transported and transported and allows worker M to enter and leave the entrance 11a of this chamber and the opened/closed parts 11b (such as door or gear door etc.) of opened/closed entrance 11a,

There is provided partition wall 25, it is configured so that outstanding to make the lower end 25a of wall 25 can separate from base plate 16 in predetermined high position to base plate 16 from top board 15 with the side of another sidewall 12 of the relative d of sidewall 11 in master unit 10,

Between a sidewall 11 and partition wall 25, working space 10a is formed by separating the space in master unit 10 with partition wall 25,

Between partition wall 25 and another sidewall 12, form ventilation shaft 10b, its lower end side is communicated with working space 10a,

Form many suction holes 17 in top board 15 above working space 10a, extraneous air is introduced in working space 10a by it,

Collecting unit of dust 20 and unit ventilators 30 are respectively communicated with ventilation shaft 10b,

Collecting unit of dust 20 operates at sandblasting duration of work, it is through arranging to make the wind speed that enters in ventilation shaft 10b be less than with the floating velocity of the abrasive material of maximum use, aspirate the air in the dust and master unit 10 suspended in master unit 10, and pure air is discharged after catching the dust in air, and

Unit ventilators 30 operates during painting step, with the predetermined air entered in the paint particles and master unit 10 suspended in wind speed suction master unit 10, and discharges the pure air removing paint particles after catching the paint particles in air.

In the blast room 1 of above-mentioned structure, by any one (being collecting unit of dust 20 in instantiation) in configuration collecting unit of dust 20 or unit ventilators 30 to give prominence in master unit 10 and to form partition wall 25, and on the surface of the partition wall 25 relative with another sidewall 12, form the inlet port (being the inlet port 22 of collecting unit of dust 20 in instantiation) of the collecting unit of dust 20 or unit ventilators 30 forming partition wall 25.

Another sidewall 12 can have the opening 12a be formed at wherein, and its another one in collecting unit of dust 20 or unit ventilators 30 (being unit ventilators 30 in instantiation) is communicated with between ventilation shaft 10b.

Preferably, per minutely 1.5 times that airflow rate is equal to or greater than the volume of master unit 10 are entered by collecting unit of dust 20.

In addition, preferably, the air velocity in the working space 10a ventilating produced by unit ventilators 30 is equal to or greater than 0.4m/s, and/or

Preferably, be by collecting unit of dust 20 2 to 7 times that enter airflow rate by the airflow rate that enters of unit ventilators 30.

Can provide abrasive material collector unit 40, it is made up of following: abrasive material collection conduit 41, and working space 10a is led at the lower end position place of any one sidewall (being another sidewall 12 in instantiation) of master unit 10 in its one end; Cyclone 42, its entrance 42a is communicated with the other end of collection conduit 41; And discharge duct 43, its one end is communicated with the gas outlet 42b of cyclone 42 and its other end is communicated with ventilation shaft 10b,

Allow/stop the second opened/closed component 44 be communicated with between discharge duct 43 and the inlet port 22 of collecting unit of dust 20, and

The 3rd opened/closed component 45 being communicated with the flow path below position in opened/closed ventilation shaft 10b between collecting unit of dust 20 with unit ventilators 30.

According to the structure of the invention described above, during blasting craft, blast room of the present invention can use collecting unit of dust 20 according to the pollution situation in operating room 1 during blasting craft, is undertaken ventilating and catching dust by closing entrance 11a and operate collecting unit of dust 20 and open entrance 11a and operate unit ventilators 30 during painting during blasting craft.During painting, blast room can use unit ventilators 30 to carry out ventilating and catching paint particles according to the pollution situation in operating room 1 during painting, and therefore can be applicable to using same operating room 1 for blasting craft and japanning.

In addition, according to the structure of above-mentioned operating room 1, during the blasting treatment carried out when entrance 11a closes, because extraneous air is introduced in operating room 1 via the suction hole 17 formed in the top board 15 of master unit 10, and apply to aspirate to working space 10a via the ventilation shaft 10b be communicated with working space 10a with the relatively low position between base plate 16 at the lower end 25a of partition wall 25, as as shown in the Fig. 1 as an example, produce in operating room 1 and act on the abrasive material that sprays in working space 10a or dust (such as grinding the comminuted powder of the abrasive material that dirt and blasting craft produce) it to be pushed into the downdraught of base plate 16 side downwards, therefore, because the pollution caused that suspends of abrasive material or dust can be resolved in early days.Abrasive material or dust are not easily adhered to top board 15 or sidewall 11 to 14 etc., and therefore, also prevent from being adhered to the abrasive material of described position or dust and to drop on paint and the adverse effect caused with its adhesion during follow-up japanning.

In addition, enter wind speed with the floating velocity making the wind speed in ventilation shaft 10b be less than abrasive material by what arrange collecting unit of dust 20, can prevent abrasive material from sucking in collecting unit of dust 20 during being ventilated by collecting unit of dust 20, and can collect separately and recycle abrasive material.

In addition, unit ventilators 30 is used to ventilate by when opening entrance 11a during painting, and as shown in Figure 3, during painting, the air-flow flowed in working space 10a to the right by the left side produced in figure, can make paint particles mobile relatively long distance in working space 10a; Paint particles will become dry during this period, and be easy to catch the paint particles in unit ventilators 30.

In addition, ventilate by when opening entrance 11a, large quantity of air to be introduced in working space 10a and is made the inside of working space 10a keep clean and the environment of health.

Therefore, even if when blasting craft and japanning are all by when using single operating room to carry out, also optimal ventilation can be carried out during blasting craft and japanning.

By forming the above-mentioned partition wall 25 be configured in outstanding mode in master unit 10 with any one (be collecting unit of dust 20 at the instantiation) in collecting unit of dust 20 or unit ventilators 30, compared with the situation being all configured at master unit 10 outside with collecting unit of dust 20 and unit ventilators 30, operating room 1 can be construed as compacter on the whole.

Herein, when being ventilated via the opening 12a be provided in another sidewall 12 by unit ventilators 30 during painting in illustrated instantiation, as shown in the white arrow in Fig. 3, because be introduced into unit ventilators 30 side via opening 12a from the air-flow of working space 10a before inlet port 22 side of introducing collecting unit of dust 20, so make paint particles be difficult to introduce in collecting unit of dust 20 side, even if be also like this when being ventilated by unit ventilators 30 while the inlet port 22 opening collecting unit of dust 20.

On the other hand, when being ventilated by collecting unit of dust 20 during blasting craft, as shown in the white arrow in Fig. 1, because air in working space 10a to be introduced in ventilation shaft 10b and is introduced in inlet port 22 after air-flow and another sidewall 12 collide and deflected by this another sidewall 12 subsequently, if so ventilate while opening the opening 12a be provided in another sidewall 12, then contained in this air-flow dust is via seizure component 32 (the such as baffle plate 32a of opening 12a and unit ventilators 30, aflter-fillter 32b etc.) collision, and the filter life catching component 32 may be shortened thus.

But, by providing as described above for opening and the first opened/closed component 12b (in instantiation for for opening and the cover plate of closing any opening 12a) of closing any opening 12a, when being ventilated by collecting unit of dust 20, dust can not be introduced in unit ventilators 30 by use first opened/closed component 12b closing openings 12a, and therefore, prevent the filtering function of the seizure component 32 (such as baffle plate 32a, aflter-fillter 32b etc.) be provided in as described above in unit ventilators 30 from reducing.

But, in illustrated structure, during being ventilated by unit ventilators 30, can not prevent paint particles from entering the inlet port 22 of collecting unit of dust 20 completely, and therefore, goodly also provide opened/closed component at inlet port 22 place of collecting unit of dust 20, and the inlet port 22 of collecting unit of dust 20 can be closed during being ventilated by unit ventilators 30.

In the structure that the position of collecting unit of dust 20 and unit ventilators 30 and illustrated instantiation are put upside down, if provide the first opened/closed component 12b at opening 12a place, then air is introduced in collecting unit of dust 20 during being ventilated by unit ventilators 30, and the lost of life of collecting unit of dust 20 can be prevented, and in the case, the opened/closed component opening and close its inlet port can be provided for further in unit ventilators 30 side.

Arrange 1.5 times that are equal to or greater than the volume of master unit 10 by by the airflow rate that enters by collecting unit of dust 20 per minute, even if dust or its analog produce within the relatively short time, working space 10a also can ventilate and keep clean.

Catch under component 32 is equipped with the structure of baffle plate 32a being provided in the paint particles in unit ventilators 30, because catching paint particles by colliding with baffle plate 32a, so as when filtering particle, there will not be the problem causing entering wind speed reduction due to blocking, and therefore, can keep stable for a long time and ventilate.

In addition, because using baffle plate 32a to catch paint particles by dry method, so need not carry out such as wet type method for catching (that is, catch the method for paint particles by making the air of discharge by the water come together in tank) needed for the complex work such as process waste water, and the relatively simple work changing baffle plate 32a can be used to safeguard.

In addition, by the air velocity of being undertaken by unit ventilators 30 in working space 10a ventilating produced arrange be equal to or greater than 0.4m/s maybe by by unit ventilators 30 enter airflow rate be placed through collecting unit of dust 20 enter the structure of 2 to 7 times of airflow rate under, even if when opening entrance 11a, also can prevent paint particles from leaking to working space 10a from entrance 11a outside.In addition, the inside of working space 10a can be made to remain clean room by being introduced in working space 10a by a large amount of extraneous air.Shift paint particles by with this air-flow, more reliably paint particles can be introduced unit ventilators 30 and its to drop on base plate 16 and with its adhesion before caught.

In addition, thering is provided collector unit and under the structure of the second opened/closed component 44 and the 3rd opened/closed component 45 is provided, second opened/closed component 44 is communicated with between discharge duct 43 and the inlet port 22 of collecting unit of dust 20, and the flow path of the 3rd opened/closed component 45 in the inlet port 22 closed downwards ventilation shaft 10b of collecting unit of dust 20.Simultaneously, by operation collecting unit of dust 20, by collecting unit of dust 20, suction is applied via ventilation shaft 10b, discharge duct 43, cyclone 42 and collection conduit 41 couples of working space 10a, and therefore, the abrasive material of collection work space 10a and dust can be come by cleaning with broom or its analog the abrasive material that is arranged on base plate 16 and dust and the opening portion loading collection conduit 41.Wherein collect the abrasive material for recirculation by cyclone 42.

In addition, the flexible pipe 47 of opening portion abrasive material being collected into collection conduit 41 is used for extend collection conduit 41 by connection, openend abrasive material can being collected flexible pipe 47 moves to appropriate location in working space 10a to aspirate abrasive material on base plate 16 or dust: therefore, worker M need not carry out similar broom or its analog of using as described above and clean the work of abrasive material or the dust be positioned on base plate 16.

Under being to be formed between base plate 16 and porous plate 61 structure of abrasive material collection space 62, the collector unit 40 ' comprising the dust arrester 50 being equipped with air-ejecting fan 51 is provided, and during being provided in painting step, close the closure member 63 of the opening in porous plate 61, can abrasive material collection be carried out simultaneously by using the air-ejecting fan 51 of dust arrester 50 to carry out suction in collection space 62 and by collecting unit of dust 20, working space 10a is ventilated during blasting craft, and working space 10a can be made to keep even cleaner.

In addition, opening in porous plate 61 is closed by using closure member 63 during painting, can prevent paint particles from entering collection space 62 and prevent abrasive material from being painted pollution: even if when abrasive material or dust residue in collection space 62, also suitably anti-abrasive material or dust are upwards blown and are polluted paint here.

Accompanying drawing explanation

Target of the present invention and advantage will be described in detail as follows from below in conjunction with drawings and Examples, wherein:

Fig. 1 is the key diagram of the state of blast room of the present invention (the first instantiation) during displaying blasting craft;

Fig. 2 is the sectional view of Fig. 1 that II-II along the line obtains;

Fig. 3 is the key diagram of state when being illustrated in the first instantiation floating coating;

Fig. 4 is the perspective view of unit ventilators;

Fig. 5 is the key diagram of state when being illustrated in blasting craft in the second instantiation;

Fig. 6 is the key diagram of state when being illustrated in abrasive material collection in the second instantiation;

Fig. 7 is the key diagram of state when being illustrated in the second instantiation floating coating;

The key diagram of state when Fig. 8 is for being illustrated in blasting craft in the 3rd instantiation (collect with abrasive material and combinationally use); And

Fig. 9 is the key diagram of state when being illustrated in the 3rd instantiation floating coating.

Detailed description of the invention

Below with reference to accompanying drawing, blast room 1 of the present invention is described.

First instantiation

Total structure

Reference number 1 in Fig. 1 to Fig. 3 is blast room of the present invention.As shown in Figures 1 and 2, although its overall shape is not particularly limited, but manufacture this operating room 1 can enter to make worker M together with workpiece W and carry out work, and operating room 1 possesses the master unit 10 in fact in box-shaped surrounded by sidewall 11 to 14, top board 15 and base plate 16; The collecting unit of dust 20 that master unit 10 ventilates is made during blasting craft; And the unit ventilators 30 making master unit 10 ventilate during painting.

Master unit

The above-mentioned master unit 10 that forms operating room 1 of the present invention is for being formed by two pairs of opposing sidewalls (11 and 12 and 13 and 14), top board 15 and base plate 16 by such as metal box-shaped room.This master unit 10 has through being formed the working space 10a that worker M can enter to carry out blasting craft and japanning together with workpiece W.

On the top board 15 of this master unit 10, better evenly and the suction hole 17 of many working space 10a for extraneous air being introduced master unit 10 is provided on the top board 15 be arranged in above working space 10a with equal intervals.When being undertaken ventilating by collecting unit of dust 20 and following japanning exhaust unit 30 and apply suction to the space in master unit 10, via the above-mentioned suction hole 17 be provided on top board 15, extraneous air is introduced downwards in master unit 10.

In addition, the sidewall 11 of a pair (11 and 12) forming in above-mentioned two pairs of opposing sidewalls 11 and 12 and 13 and 14 possesses and allows workpiece W to transport and transport and the worker of permission M enters and leave the entrance 11a of master unit 10.Be provided for the opened/closed parts 11b opening and close this entrance 11a, it is door or gear door etc.

In addition, another sidewall 12 relative with sidewall 11 possesses opening 12a, and applies suction through opening 12a thus to master unit 10 by following unit ventilators 30.

This opening 12a possesses the first opened/closed component 12b, and it is for opening and the cover plate of closing any opening 12a, and uses this first opened/closed component 12b, can during blasting craft closing any opening 12a and opening 12a can be opened during painting.

In the illustrated embodiment, although unit ventilators 30 is communicated with through opening 12a thus, substitutes this structure, opening 12a can be provided to be communicated with following collecting unit of dust 20, and the configuration of collecting unit of dust 20 and unit ventilators 30 can be put upside down with illustrated structure.

In above-mentioned master unit 10, the position be provided in closer to another sidewall 12 above-mentioned configures, so that outstanding to base plate 16 from top board 15, with the partition wall 25 making lower end 25a be positioned at the predetermined high position place relative to base plate 16 with spacing.

As shown in Figure 2, the width of this partition wall 25 corresponds to the distance between sidewall 13 and 14 that the sidewall 11 perpendicular to the 11a that provides access configures above, and space in master unit 10 thus partition wall 25 separate.In master unit 10, form worker M to enter together with workpiece W and worker M carries out the working space 10a of work in inside in sidewall 11 side of this partition wall 25, and at the ventilation shaft 10b that another formation lower end, sidewall 12 side of partition wall 25 is communicated with working space 10a.

As shown in Figures 1 and 3, the end portion of another sidewall 12 of master unit is tilted so that in a downward direction close to working space 10a, and when being applied suction in ventilation shaft 10b by following collecting unit of dust 20 or unit ventilators 30, the air-flow in working space 10a side inflow ventilation shaft 10b can be introduced in ventilation shaft 10b reposefully.

In illustrated instantiation, by forming following collecting unit of dust 20 to form above-mentioned partition wall 25 to project in master unit 10, and this partition wall 25 also serves as the shell of collecting unit of dust 20.Therefore, the assembly (such as filter (not shown) etc.) of collecting unit of dust 20 is contained in the wall thickness of partition wall 25.

In illustrated instantiation, although form partition wall 25 by the shell of collecting unit of dust 20, completely independently can form partition wall 25 and collecting unit of dust 20, and such as, ventilation shaft 10b can with the open communication be formed on the sidewall of master unit 10.

In addition, substitute illustrated structure, configuration collecting unit of dust 20 and unit ventilators 30 can be put upside down as described above, and partition wall 25 can be formed to project in master unit 10 by configuration unit ventilators 30.

Can by porous plate (not shown), better relatively thick porous plate (such as grid or its analog) is placed on the base plate 16 of master unit 10, to make to fall and the abrasive material sprayed during blasting craft arriving base plate 16 or the dust that produced by abrasive blasting are retained in the opening formed in this porous plate, easily prevent its settling flux etc. thus.

In the case, can simply porous plate be placed on base plate 16, can be easy to make it remove; And during abrasive material is collected, this porous plate can remove from base plate 16, and the abrasive material that base plate 16 deposits can be collected by such as cleaning with broom or its analog.

Collecting unit of dust

As above the master unit 10 constructed possesses the collecting unit of dust 20 of the ventilation carrying out master unit 10 during blasting craft.

This collecting unit of dust 20 by the air operating the air-ejecting fan 21 provided in this collecting unit of dust 20 and come in the 10a of suction operation space, and is discharging air by the air aspirated from working space 10a is caught component (not shown) (such as filter or its analog) by the inner dust provided via above-mentioned ventilation shaft 10b after it removes dust.As described above, in illustrated instantiation, in master unit 10, configure this collecting unit of dust 20 by the mode outstanding from top board 15 side, the shell of collecting unit of dust 20 also serves as above-mentioned partition wall 25.

As shown in Figure 2, the side of the ventilation shaft 10b side of the partition wall 25 of the shell as this collecting unit of dust 20 provides inlet port 22, and by operation air-ejecting fan 21, via ventilation shaft 10b by the air of working space 10a inside since then inlet port 22 introduce in collecting unit of dust 20.

Although do not provide in illustrated structure, goodly provide following and during being ventilated by collecting unit of dust 20, open inlet port 22 and during being ventilated by unit ventilators 30, be closed into the opened/closed component of mouth 22, such as cover plate or its analog.

The air-ejecting fan 21 provided in collecting unit of dust 20 is set, the floating velocity of abrasive material used is no more than (in other words to make the wind speed that enters in ventilation shaft 10b, be not equal to or greater than floating velocity), in order to avoid the abrasive material that the base plate 16 of working space 10a deposits is sucked in collecting unit of dust 20 when making working space 10a ventilate via ventilation shaft 10b; And better use generation per minute be preferably 1.5 times or higher of operating room 1 internal volume enter airflow rate the air-ejecting fan that working space 10a ventilates can be made within the relatively short time.

Unit ventilators

Reference number in Fig. 1, Fig. 3 and Fig. 4 is the unit ventilators making master unit 10 ventilate during painting; Unit ventilators to be communicated with the ventilation shaft 10b in master unit 10 via the opening 12a provided on another sidewall 12 of above-mentioned master unit 10 and air in ventilation shaft 10b suction operation space 10a thus.

This unit ventilators 30 is aspirated the air in the working space 10a of master unit 10 by operation air-ejecting fan 31, air is introduced the seizure component 32 of the paint particles contained by being used for catching in this air to catch with the paint particles that spray pattern exists in air, and discharge pure air.

In this instantiation, the aflter-fillter 32b providing baffle plate (primary filter) 32a and be configured at these baffle plates 32a downstream is as the above-mentioned seizure component 32 for catching paint particles.

In these assemblies, the plate of baffle plate 32a for uprightly providing in the middle of air flow path as shown in Figure 4.In this instantiation, the baffle plate 32a of configuration cross section in the direction of the width in U-shaped in fact formation, so that engagement alternating with each other in the opposite direction, with make can by air-flow with the mode of crawling illustrated by the arrow in such as this figure by baffle plate 32a between while the spacing that formed, make the surface collision of paint particles and baffle plate 32a to catch most paint particles in air.

The micro-paint particles residued in air do not caught by baffle plate 32a by the aflter-fillter filtering being configured at baffle plate 32a downstream on the pumping direction of air-ejecting fan 31, described aflter-fillter is the filter of known type, such as formed by adhesive-bonded fabric etc.

As the above-mentioned air-ejecting fan 31 be provided in this unit ventilators 30, use can produce the air-ejecting fan of the air velocity being equal to or greater than 0.4m/s, and in addition, better use produce enter the air-ejecting fan that enter 2 to 7 times of airflow rate of air-ejecting fan of airflow rate for providing in above-mentioned collecting unit of dust 20; Thus, before arriving the bottom surface in working space etc. sucking-off institute spray paint particulate and with the seizure of japanning exhaust unit.

In this instantiation, because the surface of above-mentioned baffle plate 32a is through specially treated, to improve the capturing efficiency of paint particles, so the efficiency that above-mentioned baffle plate 32a catches paint particles is higher, and by use combination above-mentioned baffle plate 32a and aflter-fillter 32b double filtering system, can reach for melamine paint be equal to or greater than 90% and priming paint is equal to or greater than 85% high capturing efficiency.

Under catching the structure of this instantiation of paint particles by combination baffle 32a (it is primary filter) in this way and aflter-fillter 32b, because most of paint particles is caught by baffle plate 32a, only a small amount of paint particles is caught by aflter-fillter 32b, and therefore, not easily there is the blocking of aflter-fillter 32b; Therefore, even if aflter-fillter 32b continues to use the relatively long time, the entering wind speed and also can not reduce of unit ventilators 30, and successfully carry out the ventilation of operating room.

In addition, by use dry method, baffle plate 32a and aflter-fillter 32b is such as used to catch paint particles, need not carry out such as processing the complex work such as the water for catching when wet type method for catching (catching paint particles to carry out by the water come together in tank in water by by the air of discharge), and there is the advantage can being undertaken by the simple work changing baffle plate 32a or aflter-fillter 32b safeguarding.

Operation etc.

By for by using 1 pair, the operating room of the present invention workpiece W as above constructed to carry out blasting craft, and the situation of painting to this workpiece after this blasting craft describes the operation of the part out of the ordinary of operating room 1.

Before process workpiece W, the opened/closed parts 11b be provided on the sidewall 11 of the master unit 10 of operating room 1 opens, and to transport in working space 10a via described opened/closed parts for the workpiece W of process and the worker M carrying out work enters working space 10a via described opened/closed parts.

In the following description, although all work carried out workpiece W is all performed being interpreted as by worker M, but such as, work can be carried out with alternative worker M by working robot or its analog being transported together with workpiece W in working space 10a in unmanned working space 10a.

As shown in Figure 1, when carrying out blasting craft to workpiece W, the entrance 11a be formed on sidewall 11 is closed to prevent abrasive material or dust from leaking out from operating room 1 by opened/closed parts 11b.

When being provided in the opening 12a in another sidewall 12 and being closed by the first opened/closed component 12b, the air-ejecting fan 21 of collecting unit of dust 20 is opened, and the air-ejecting fan 31 of unit ventilators 30 cuts out, the worker M in working space 10a is injected into desired location on the surface of workpiece W to carry out blasting craft by the abrasive material supplied by the device for feeding (not shown) of being pressurizeed by abrasive material from hand-held sand-blasting gun (hand held blast gun).

By opening the air-ejecting fan 21 that is provided in collecting unit of dust 20, collecting unit of dust 20 via ventilation shaft 10b from the air of 10a inside, inlet port 22 suction operation space and to be expelled to master unit 10 outside; Thus, as illustrated by the arrows in fig. 1, extraneous air introduced via the suction hole 17 be provided on the top board 15 of master unit 10 suction that applies due to this collecting unit of dust 20 downwards and produce in the working space 10a of negative pressure.

Spacing between the base plate 16 of the air independent unit 10 of working space 10a inside and the lower end 25a of partition wall 25 is sucked in the inlet port 22 of collecting unit of dust 20 via ventilation shaft 10b, and discharges pure air remove dust contained in air in collecting unit of dust 20 after.

In this instantiation, as the air-ejecting fan 21 be provided in collecting unit of dust 20, use the air-ejecting fan with the ability of the airflow rate that can produce the volume of air making it possible to spatial volume 1.5 times in discharge master unit 10 per minute as an example, and therefore, the dust etc. that blasting craft produces can be removed immediately, and make working space 10a keep clean and comfortable.

Because reach via the suction hole 17 be formed in top board 15 and extraneous air introduced working space 10a, and the air of 10a inside, suction operation space is reached in this way via the ventilation shaft 10b formed at the position place close to base plate 16, so as illustrated by the arrows in fig. 1, in working space 10a, produce the downdraught of the base plate 16 that to lead from top board 15.

Therefore, the abrasive material sprayed and the dust produced during blasting craft move, so that air-flow is pushed base plate 16 to and fallen and be deposited within the relatively short time on base plate 16 thus; Therefore, once the abrasive material fallen, dust etc. are deposited on base plate 16, then its not easily by ventilated the air-flow that produces upwards blow and settling flux in air.

As mentioned above, after terminating blasting craft, remove by such as cleaning with broom or its analog abrasive material and dust that base plate 16 deposits on demand.As described above, if be placed on base plate 16 by porous plate (such as grid), then can collect abrasive material and dust that the surface of base plate 16 deposits after temporarily removing this porous plate.

When in this way by such as with broom or its analog clean remove abrasive material and dust time, because the dust likely base plate 16 deposited etc. will during this technique settling flux and pollute working space, so better closed entrance 11a, opening 12a is kept to close with the first opened/closed component 12b, keep the air-ejecting fan 21 of collecting unit of dust 20 to open (keeping the air-ejecting fan 31 of unit ventilators 30 to close), and continue working space 10a is ventilated.

Substitute the collection carrying out this abrasive material; such as by deposit above covering with such as baffle etc. abrasive material and dust base plate 16 (if or put the porous plate of such as grid or its analog; then porous plate for this reason); can prevent the dust etc. that base plate deposits from polluting paint because of settling flux; and prevent from painting the abrasive material polluting and base plate deposits, this abrasive material will be collected after a while and recycle during next step is painted.

After blasting craft terminates, complete removing and/or under state that base plate 16 has covered with baffle or its analog, workpiece W being painted of abrasive material that base plate 16 deposits and dust as described above.

During painting, as shown in Figure 3, the opening 12a be provided on another sidewall 12 of master unit is opened by operation first opened/closed component 12b, unit ventilators 30 is communicated with ventilation shaft 10b, the air-ejecting fan 31 provided in unit ventilators 30 is provided, and the air-ejecting fan 21 provided in collecting unit of dust 20 is provided, cause unit ventilators 30 makes working space 10a ventilate.

Now, the opened/closed parts 11b provided on the sidewall 11 of master unit 10 opens, and entrance 11a opens, and as shown in the white arrow of Fig. 3, when producing the air-flow flowed to opening 12a from entrance 11a, by spraying the japanning of painting and carrying out workpiece W.

As described above, when the air-ejecting fan 31 provided in unit ventilators 30 is opened, when entrance 11a opens simultaneously, not only introduce extraneous air via the suction hole 17 that top board 15 provides, and also via entrance 11a, a large amount of extraneous air is introduced in working space 10a, and as shown in the white arrow of Fig. 3, in working space 10a, produce the air-flow flowed to the right in the left side in figure.

Herein, because the paint sprayed in working space 10a is fine-particle state and have weight low compared with abrasive material etc., so paint be easy to by by unit ventilators 30 in working space 10a the air-flow that produces blow, and therefore, even if when entrance 11a stays open, paint particles also can not leak to master unit 10 outside by the air-flow producing guide openings 12a side from entrance 11a.In addition, paint particles therewith air-flow together by before arrival base plate 16 by working space 10a and ventilation shaft 10b and via in opening 12a suction ventilation unit 30, and caught by above-mentioned baffle plate 32a and aflter-fillter 32b, and pure air is expelled to outside.

In addition, paint particles tends to become dry when mobile, because paint particles moves relatively long distance in working space 10a to opening 12a side from entrance 11a side, and therefore, the capturing efficiency of unit ventilators 30 is improved.

In addition, as described above, because produce the air-flow flowing to opening 12a side from entrance 11a side in working space 10a, even if so still uncollected abrasive material and dust etc. residue on base plate 16, abrasive material and dust also can move along base plate 16 and not easily upwards be blown.Therefore, paint can be prevented to be subject to abrasive material and dust pollution.

In specific words, because the air-ejecting fan 31 provided in unit ventilators 30 enter 2 to 7 times that enter airflow rate that airflow rate is set to be greater than the air-ejecting fan 21 provided in such as collecting unit of dust 20, so working space 10a can be made to keep clean and prevent paint particles from leaking via entrance 11a by a large amount of extraneous air of introducing.In addition, paint particles is introduced do not make it arrive base plate 16 in unit ventilators 30 to become possibility more reliably.

Second instantiation

Another embodiment structure (the second instantiation) of operating room 1 of the present invention describes with reference to Fig. 5 to 7.

The operating room 1 of this instantiation shown in Fig. 5 to 7 possesses the collector unit 40 constructed by collection conduit 41, cyclone 42 and discharge duct 43.This operating room 1 is in ventilation shaft 10b, provide the second opened/closed component 44 and the 3rd opened/closed component 45 with the difference above referring to figs. 1 to the operating room 1 of the first instantiation described in 4.All the other structures are identical with the operating room 1 referring to figs. 1 to the first instantiation described in 4, and therefore, will save the description to total part.

The cyclone 42 forming above-mentioned collector unit 40 produces vortex flow wherein by by inner air-flow, thus by the abrasive material making to have relative higher weight because centrifugal force drops in air-flow, to be separated and to fall and collect described abrasive material, and be separated and collect by with the air-flow dust that delivery ratio abrasive material is light together for the abrasive material that recycles.

The lower end of this cyclone 42 can possess the abrasive material storage tank 42c for collecting collected abrasive material, and in addition, cyclone 42 can possess the abrasive material pressurization feeding member (not shown) etc. for the abrasive material be collected in this storage tank 42c pressurization being fed to the sand-blasting gun be placed in working space 10a.

As shown in Figures 5 to 7, the entrance 42a of this cyclone 42 is communicated with working space 10a via collection conduit 41.The gas outlet 42b of cyclone 42 is communicated with the above-mentioned ventilation shaft 10b formed in master unit 10 via discharge duct 43.

In this instantiation, working space 10a is led in the lower end of the opening portion of collection conduit 41, to be in phase co-altitude with the base plate 16 of master unit 10, and as shown in Figure 6, the abrasive material that base plate 16 deposits and dust can use broom or its analog abrasive material and dust to be swept in the opening portion of collection conduit 41 by worker M, and suck in collection conduit 41.

In addition, the discharge duct 43 be communicated with the gas outlet 42b of cyclone 42 is communicated with above-mentioned ventilation shaft 10b via the top board 15 of master unit 10.

In ventilation shaft 10b, provide above-mentioned second opened/closed component 44 and the 3rd opened/closed component 45.Wherein, second opened/closed component 44 for open and closed row feed channel 43 and collecting unit of dust 20 inlet port 22 between flow path, and in this instantiation, the position opened/closed ventilation shaft 10b of the second opened/closed component 44 in plate-shaped member above the inlet port 22 of collecting unit of dust 20, thus allow/stop the inlet port 22 of collecting unit of dust 20 and being communicated with between discharge duct 43.

In addition, above-mentioned 3rd opened/closed component is used for position all lower for inlet port 22 and the opening 12a for collecting unit of dust 20 and opens and close flow path in ventilation shaft 10b, and this 3rd opened/closed component controls air flows to collecting unit of dust 20 from working space 10a.

As shown in Figure 6, as routine once revision for execution, the opening portion of above-mentioned collection conduit 41 collects flexible pipe 47 through construction to make can to connect pliability via joint 46 grade.So, the opening portion of collection conduit 41 can be made to extend.Extend the opening portion of collection conduit 41 in this way, make it possible to realize following structure: can by by collect the openend of flexible pipe 47 move to deposit abrasive material and dust position to carry out the collection of abrasive material, and without the need to cleaning the abrasive material and dust that are deposited on the base plate 16 of master unit 10.

As shown in Figure 5, in the operating room 1 of this instantiation as above constructed, settle the second opened/closed component 44 to block being communicated with between discharge duct 43 and the inlet port 22 of collecting unit of dust 20, and settle the 3rd opened/closed component to open ventilation shaft 10b during blasting craft.

At this closed entrance 11a, with under the first opened/closed component 12b closing any opening 12a, the air-ejecting fan 21 opening collecting unit of dust 20 and the state of air-ejecting fan 31 of closing unit ventilators 30, as the operating room of the first instantiation described in reference diagram 1, carried out the ventilation of working space 10a by collecting unit of dust 20.

After terminating blasting craft, if the abrasive material that the base plate 16 of wish collection work space 10a deposits and dust, then as shown in Figure 6, operate the second opened/closed component 44 to be communicated with the inlet port 22 of collecting unit of dust 20 to make discharge duct 43, and operation the 3rd opened/closed component 45 is with the flow path in enclosed ventilation pipeline 10b.

Now, keep opening 12a to close by the first opened/closed component 12b, and keep the air-ejecting fan 21 of collecting unit of dust 20 open and keep the air-ejecting fan 31 of unit ventilators 30 to close.

When the inlet port 22 being closed collecting unit of dust 20 by the 3rd opened/closed component 45 is in this way with being communicated with between working space 10a, cannot directly apply suction via ventilation shaft 10b to working space 10a by collecting unit of dust 20, but but form being communicated with between discharge duct 43 and the inlet port 22 of collecting unit of dust 20; Thus collecting unit of dust 20 starts to apply suction via discharge duct 43, cyclone 42 and collection conduit 41 couples of working space 10a.

Therefore, when by such as to clean etc. the abrasive material that base plate 16 deposits and dust are loaded in the opening portion of collection conduit 41 time, via collection conduit 41, loaded abrasive material and dust are introduced in cyclone 42 together with the air of working space 10a inside.Remove and collect contained abrasive material by the vortex flow produced in cyclone 42 and be collected in the storage tank 42c be provided in below cyclone 42.

On the other hand, will the air of the dust having removed and collected abrasive material be contained via in the gas outlet 42b introducing discharge duct 43 of cyclone 42, and introduce in collecting unit of dust 20 via ventilation shaft 10b.

In addition, in this collecting unit of dust 20, remove dust and pure air is expelled to outside.

After terminating the collection of abrasive material in this way, when painting to workpiece W after blasting craft, as shown in Figure 7, settle the second opened/closed component 44 to close being communicated with between discharge duct 43 and the inlet port 22 of collecting unit of dust 20, and settle the 3rd opened/closed component 45 to open ventilation shaft 10b.

In addition, open closed by the first opened/closed component 12b opening 12a and open entrance 11a, and also closing the air-ejecting fan 21 of collecting unit of dust 20, and opening the air-ejecting fan 31 of unit ventilators 30.Thus, during painting, successfully carry out the ventilation of working space 10a, as the first instantiation described in reference diagram 3.Then caught the paint particles sprayed by the baffle plate 32a be provided in unit ventilators 30 and aflter-fillter 32b, and pure air is expelled to outside.

As described above, by providing above-mentioned collector unit 40 and the first opened/closed component 44 and the 3rd opened/closed component 45 in this instantiation, abrasive material and dust that the base plate 16 of working space 10a deposits can be easily removed by the negative pressure utilizing collecting unit of dust 20 to produce, relatively easily collect wherein contained recycled abrasive material, and discharge removes by collecting unit of dust 20 dust residuing in and collect in the air of abrasive material in addition.

3rd instantiation

As described above, with reference in the second instantiation described in figure 5 to 7, although make working space 10a ventilate and collect abrasive material via collector unit 40 and can hocket by collecting unit of dust 20 via ventilation shaft 10b, from working space 10a collect abrasive material can with by above-mentioned collecting unit of dust 20, working space 10a is ventilated to carry out simultaneously.

As the 3rd instantiation, an embodiment structure of the operating room 1 constructed in this way is described with reference to figure 8 and Fig. 9.

In Fig. 8 and instantiation illustrated in fig. 9, except collection conduit 41 ', cyclone 42 ' and discharge duct 43 ', collector unit 40 ' also possesses the dust arrester 50 being equipped with air-ejecting fan 51, and discharge duct 43 ' therewith dust arrester 50 inlet port be communicated with.

By being placed on the base plate 16 of master unit 10 with preset space length by porous plate 61 (such as grid or its analog), form the collection space 62 catching abrasive material and the dust fallen between base plate 16 and porous plate 61.

Under the structure of this instantiation operating room 1 shown in Fig. 8 and Fig. 9, do not provide the parts of the second opened/closed component 44 and the 3rd opened/closed component 45 provided in the ventilation shaft 10b corresponded to reference to the second instantiation operating room 1 described in figure 5 to Fig. 7.

In the operating room 1 of this instantiation as above constructed, during blasting craft, as shown in Figure 8, with the first opened/closed component 12b closing any opening 12a, open the air-ejecting fan 21 of collecting unit of dust 20 and the air-ejecting fan 51 of dust arrester 50 simultaneously, and close the air-ejecting fan of unit ventilators 30; Thus, by collecting unit of dust 20, carry out via ventilation shaft 10b the ventilation that working space 10a inside is suspended with the air of dust.The negative pressure produced by dust arrester 50, is falling within the abrasive material be collected in collection space 62 and dust via the opening in porous plate 61 after on base plate 16 in introducing collector unit 40 ', and is being collected in the cyclone 42 ' of collector unit 40 ' by abrasive material.

Via discharge duct 43 ', the air containing the dust having collected abrasive material is introduced in dust arrester 50, dust by this dust arrester 50 the filters trap that provides, and the pure air removing dust is expelled to outside.

On the other hand, during painting, by such as covering porous plate 61 with baffle or its analog, so that under the state preventing paint particles from entering collection space 62 and make working space 10a and collection space 62 separate, with the first opened/closed component 12b closing any opening 12a, close the air-ejecting fan 21 of collecting unit of dust 20 and the air-ejecting fan 51 of dust arrester 50 simultaneously, and open the air-ejecting fan 31 of unit ventilators 30; Thus, suitably can be carried out the ventilation of working space 10a by unit ventilators 30, as the situation described in first and second instantiation.

In the above description; although working space 10a and collection space 62 are described to by covering porous plate 61 with baffle and separate; but two spaces can through construction; such as to be separated by the gear gate-shaped parts being provided in porous plate 61 slid underneath; and in addition, separating of two spaces can be carried out automatically.

When operating room 1 of this instantiation as above constructed, need not be provided for removing after becoming japanning from blasting craft and the step of abrasive material in the 10a of collection work space, this is favourable, because can paint immediately after blasting craft, thus the processing time can be made to shorten further.

In addition, because suitably collect abrasive material and dust that base plate 16 deposits during blasting craft, so more easily prevent in working space 10a due to pollution that the abrasive material of deposition on base plate 16 and the settling flux of dust cause.

Although the details of eliminating, but can by providing abrasive material collecting mechanism to improve the efficiency of abrasive material and dust collection and not hinder the reduction of bottom plate heights in collection space 62, this is proposed by the applicant of No. 2009-95892nd, Japanese Unexamined Patent Publication (case), wherein base plate be divided into abrasive material by screen part, formed and there is the blast room of this screen part as bottom surface, at screen part lower straight arrangement a plurality of inverted in fact corners conical hopper, open with towards screen part to make its top, and the lower end of each funnel is communicated with aspiration means (not shown) (such as dust arrester or its analog) via collection conduit.

Therefore, the most extensive claim is not the machine for construction in a specific way below.Truth is, the most extensive claim is intended to core or the marrow of protecting this breakthrough invention.The present invention is novel and applicable undoubtedly.In addition, in view of being considered as overall prior art, when creating of the present invention, it is not apparent for general technology person.

In addition, in view of novelty of the present invention, it is pioneer invention undoubtedly.Therefore, from legal point of view, following right has the right to carry out a very wide range of explanation to protect core of the present invention.

Therefore visible, effectively can reach above-mentioned target and obvious they's target from description above, and change because can be made some when not departing from scope to above structure, so wish that contained in the description above or all key elements shown in accompanying drawing should be interpreted as illustrative and not have limited significance.

Also should be appreciated that, following right is intended to contain all general and special characteristics of the present invention as herein described, and can be described as all statements of the scope be in scope from language viewpoint.

Invention has been described now.

Claims

1. a blast room, it comprises:

One master unit;

One collecting unit of dust, it comprises air-ejecting fan; And

One unit ventilators, it comprises another air-ejecting fan;

Wherein said master unit defines a space with sidewall, a top board and a base plate;

One of them sidewall of the described sidewall of described master unit possesses a permission and one workpiece is transported and transported and allows a worker to enter and leave the opened/closed parts of entrance described in the entrance of described blast room and an opened/closed;

There is provided a partition wall, it is configured so that in described master unit, outstanding to described base plate from described top board in the side of relative another sidewall of this one of them sidewall with described sidewall, separates with described base plate to make a lower end of described partition wall;

Between a described sidewall and described partition wall, a working space is formed by with the space in described partition wall separately described master unit;

Between described partition wall and this another sidewall, form a ventilation shaft, one lower end is communicated with described working space;

Form many suction holes in described top board above described working space, extraneous air is introduced in described working space by it;

Described collecting unit of dust and described unit ventilators are communicated with described ventilation shaft respectively;

Described collecting unit of dust is at sandblasting duration of work with the wind speed setting operation in described ventilation shaft, and wherein said wind speed setting is less than the floating velocity for the abrasive material used; And

Described unit ventilators makes a reservation for enter wind speed with one during a painting step;

At sandblasting duration of work, the air-ejecting fan be arranged in collecting unit of dust is unlocked, and another air-ejecting fan be located in unit ventilators is closed; And

During painting step, this another air-ejecting fan be arranged in unit ventilators is unlocked, and the air-ejecting fan be located in collecting unit of dust is closed.

2. blast room as claimed in claim 1, wherein said partition wall so that outstanding and formed in described master unit, and forms the described collecting unit of dust of described partition wall or an inlet port of described unit ventilators is formed on the surface at one of the described partition wall relative with another sidewall described by configuring in described collecting unit of dust or described unit ventilators any one; And

Another sidewall described has an opening be communicated with between the opposite side of described ventilation shaft and described collecting unit of dust or described unit ventilators through being formed.

3. blast room as claimed in claim 2, it comprises the first opened/closed component of opening described in an opened/closed further.

4. the blast room as described in claim 1 or 3, wherein at sandblasting duration of work, be formed in entrance on one of them sidewall of master unit by opened/closed members close, the opening be located on another sidewall is closed by the first opened/closed component; And

During painting step, the opening be located on another sidewall of master unit is opened by operating the first opened/closed component, and to be communicated with ventilation shaft by unit ventilators, and the entrance be formed on one of them sidewall of master unit is unlocked.

5. blast room as claimed in claim 1, wherein per minutely enters 1.5 times that airflow rate is equal to or greater than a volume of institute's master unit by one of described collecting unit of dust.

6. blast room as claimed in claim 2, wherein said unit ventilators possesses a baffle plate as one for catching the component of paint particles.

7. blast room as claimed in claim 1, is equal to or greater than 0.4m/s by described unit ventilators carry out the ventilating speed of a produced air-flow in wherein said working space.

8. blast room as claimed in claim 2, is equal to or greater than 0.4m/s by described unit ventilators carry out the ventilating speed of a produced air-flow in wherein said working space.

9. blast room as claimed in claim 1, wherein entering airflow rate by one of described unit ventilators is entered airflow rate by one of described collecting unit of dust 2 to 7 times.

10. blast room as claimed in claim 2, wherein entering airflow rate by one of described unit ventilators is entered airflow rate by one of described collecting unit of dust 2 to 7 times.

11. blast rooms as claimed in claim 1, it comprises further:

One by the following abrasive material collector unit formed: an abrasive material collection conduit, and described working space is led at a lower end position place of described any one sidewall of master unit in its one end; One cyclone, one entrance is communicated with the other end of described abrasive material collection conduit; And a discharge duct, its one end is communicated with a gas outlet of described cyclone and its other end is communicated with described ventilation shaft;

One allows/stops the second opened/closed component be communicated with between described discharge duct and an inlet port of described collecting unit of dust; And

One a 3rd opened/closed component being communicated with the flow path below position in ventilation shaft described in opened/closed between described collecting unit of dust with described unit ventilators.

12. blast rooms as claimed in claim 11, it comprises once providing further so that flexible pipe collected by the pliability abrasive material that can be connected to an opening portion of described abrasive material collection conduit.

13. blast rooms as claimed in claim 11, it comprises a porous plate further, is placed on the base plate of working space with a preset space length by porous plate, and to form an abrasive material collection space, and a wherein end of abrasive material collection conduit is received space with abrasive material and is communicated with.

14. blast rooms as claimed in claim 13, close the closure member in the hole in described porous plate during it is included in painting step further.