KR102036483B1 - Filtration and adsorption device for painting booth in automobile repair shop - Google Patents

Abstract

The present invention relates to a filtration and adsorption device for a painting booth in an automobile repair shop. The filtration and adsorption device for a painting booth in an automobile repair shop comprises: a cabinet including an upper space and a lower space communicated with each other, and a door which covers the lower space so that the lower space is opened and closed in a lateral direction, and configured to intake external air to the inside of the lower space through a filtration collecting unit; an exhaust fan installed in the upper space and configured to induce the air in the lower space to be moved upward so that the air is exhausted outside the cabinet; a plurality of barriers vertically fixed in the lower space and configured to partition the lower space into a plurality of flow fields, and induce the air, introduced by passing through the filtration collecting unit, to the upper space through the flow fields; a plurality of adsorption units installed in the flow fields, configured to purify the air which has passed through the flow fields, wherein each adsorption unit is formed in a plate shape having a predetermined thickness, and the adsorption units are inclined to have an acute angle with respect to a vertical line; and a fixing means configured to fix the adsorption units in the flow fields. According to the present invention, the filtration and adsorption device for a painting booth in an automobile repair shop is configured such that an acute angle is formed between a streamline of air and one adsorption unit so that a contact area of the adsorption unit and the air is expanded, and accordingly, a load of the adsorption unit per each unit area is reduced. Thus, efficiency of air purification is higher. In addition, both surfaces of the adsorption unit are usable, and thus, maintenance costs are reduced.

Description

Filtration and adsorption device for painting booth in automobile repair shop}

The present invention relates to a filtration adsorption device for a paint booth of an automobile maintenance factory, and more particularly, by using a filter dust collector and an adsorption unit, by simultaneously removing particulate contaminants such as dust and volatile organic substances, painting of an automobile maintenance factory with excellent purification ability. It relates to a filtration adsorption device for a booth.

Air pollutants from a variety of pollutants, from auto repair shops to chemical plants and large-scale coal plants, are the main pollutants that greatly exacerbate the atmosphere around us.

Also, in recent years, fine dust coming from the wind in China has caused a big problem recently appeared as a social issue. The fine dust is so small that it can penetrate the body through the skin or the respiratory tract and reach the end cells through the blood vessels, which can cause diseases ranging from respiratory diseases to cancer. Or higher for children. This is the reason why high performance air purifiers with various purification methods and performances are rapidly spreading in recent years.

On the other hand, the paint booth of the automobile maintenance factory emits not only fine dust but also a large amount of volatile organic substances. These air pollutants have to be discharged through an appropriate purification treatment system, but in many maintenance shops, the cost problem is not enough to operate the purification treatment equipment.

The installation and installation of the filter booth for painting booths are often unsuitable for the design standards of the Air Quality Preservation Act, and are installed by general facility companies, not specialized air environment contractors. There is a problem that it does not work. There is a filtration adsorption device, but mana.

Domestic Patent Publication No. 10-1457063 (Air purifier and air purifying method using the air purifier) Registered Korean Patent Publication No. 10-1400250 (Air purifier with an optical fiber layer and air cleaner including the same)

The present invention has been made to solve the above problems, by arranging the filter dust collector and the adsorption unit can remove the volatile organic substances such as fine dust at the same time, the adsorption unit filter adsorption booth for the paint booth of the automobile maintenance shop is protected by the filter dust collector The purpose is to provide.

In addition, an object of the present invention is to provide a filtration adsorption device for a paint booth having an excellent automotive treatment plant excellent treatment capacity by maximizing the specific surface area of the activated activated carbon layer.

Filtration adsorption device for automobile booth paint booth of the present invention as a means for solving the problem for achieving the above object, having the upper space and the lower space communicating with each other to receive the outside air into the lower space through the filter dust collecting unit, A cabinet having a door to cover the lower space in a lateral direction; An exhaust fan installed in the upper space and exhausting air from the lower space to the outside of the cabinet; A plurality of partition walls fixed vertically in the lower space to partition the lower space into a plurality of flow fields, and guide air introduced through the filter dust collector to the upper space through the flow field; A plurality of adsorption parts installed in the flow field to purify the air passing through the flow field, taking a form of a plate having a predetermined thickness and inclined to have an acute angle with respect to a vertical line; And fixing means for fixing the adsorption portion in the flow field.

In addition, each of the adsorption unit, having a predetermined thickness and adsorbs a diamond block having a shape of a hollow square plate and having a plurality of air holes, and a contaminant that is filled in the diamond block and passes through the diamond block in a thickness direction. Comprising activated carbon, and the inner wall surface of the partition and the cabinet, a plurality of engaging grooves are formed at regular intervals in the vertical direction, the fixing means is fixed to the upper end and the lower end of the panel, respectively, coupled to the panel The holder body is provided on one side of the holder body, the hook is fitted to the engaging groove, a panel holder including a magnet provided on the other side of the holder body, the suction unit forms a pair of two, the top panel The holders are coupled to each other by the magnetic force of the magnet, and the lower panel holder is inserted into the locking groove and opened downward. Take the state, or take the form took place in the upper panel and the top holder is fitted in the engaging groove bottom of the panel holder are coupled to each other by the magnetic force of the magnet.

In addition, the adsorption portion is formed in a straight line in a state in which a plurality of adsorption is in close contact with each other, one end of each of the adsorption portion, to grasp the state of adhesion between the adsorption portion, provided at one end of the diamond block A housing having a space, a piezoelectric sensor fixed in the accommodation space of the housing and generating electricity by a pressure applied from the outside, a part of which is exposed to the outside of the housing while being supported by the housing, being pressed into the housing by an external force A close detection unit having a movable pusher for pressurizing a sensor, a spring elastically supporting the movable pusher to the outside of the housing, and a communication module connected to the piezoelectric sensor and outputting a signal to the outside when the piezoelectric sensor is pressed, the cabinet On the side of, the first lamp and the piezoelectric sensor is turned on when the piezoelectric sensor is pressed The second lamp that is turned on in the non-state is disposed.

In addition, a plurality of pedestals having a predetermined interval in the vertical direction is fixed to the inner surface of the partition wall and the cabinet, the panel structure is detachably mounted to each of the pedestal, the panel structure is a frame having a skeleton structure of the cube And a panel plate which is installed in the frame and has a rectangular plate shape, the two forming one pair, the upper ends closely contact each other, and the lower ends being opened. A plurality of adsorptions including a diamond block having a predetermined thickness and having a hollow square plate and having a plurality of air holes, and activated carbon adsorbed to the inside of the diamond block and adsorbing contaminants passing through the diamond block in the thickness direction. And a restraint frame for accommodating the adsorption part in a straight line to keep the adsorption parts in close contact with each other.

The filter adsorption device for a paint booth of an automobile maintenance factory of the present invention having the above-described structure is capable of simultaneously removing volatile organic substances such as fine dust by arranging a filter dust collector and an adsorption unit, so that the adsorption unit is protected by the filter dust collector. Performance is kept long.

In addition, the specific surface area of the built-in activated carbon layer is large, so that the ability to treat volatile organic materials is good.

1 is a perspective view of a filter adsorption device for a paint booth of a car maintenance factory according to an embodiment of the present invention.
2 is a view for explaining the internal configuration of the filter adsorption device for a paint booth of a car maintenance factory according to an embodiment of the present invention.
3 is a cutaway perspective view of the adsorption unit shown in FIG. 2 separately;
4A and 4B are views for explaining the configuration and operation of the adhesion detecting unit included in the adsorption unit shown in FIG. 3.
5 is a view for explaining a method of using the purification device shown in FIG.
6 is a view showing another embodiment of the filter adsorption device for a paint booth of a car maintenance factory according to an embodiment of the present invention.
7 is a perspective view of the panel structure of FIG. 6.
FIG. 8 is a perspective view separately showing a panel plate constituting the panel structure shown in FIG. 7.
9 is a view for explaining the method of using the filter adsorption apparatus for the paint booth of the automobile maintenance shop shown in FIG.

Hereinafter, one embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

The filter adsorption device for a paint booth of an automobile maintenance factory of the present invention is capable of simultaneously removing particulate contaminants such as fine dust and volatile organic materials by applying a filter dust collector and an adsorption portion, and in particular, the adsorption portion is protected by the filter dust collector. The life of wealth is greatly extended, resulting in low maintenance costs.

In addition, by arranging the adsorption portion in the flow passage, that is, the flow field, in an inclined manner, the area of the adsorption portion responsible for the removal of contaminants in the unit cross-sectional area of the air passing through the flow field is greatly expanded, thereby lowering the filter load and eventually filtering It has a structure with improved effect.

Figure 1 is a perspective view showing the external appearance of the filter booth 10 for paint booth of automobile maintenance factory according to an embodiment of the present invention, Figure 2 is to explain the internal configuration of the filter booth for paint booth of automotive repair shop It is for the drawing. 3 is a cutaway perspective view separately showing the adsorption unit shown in FIG. 2, and FIGS. 4A and 4B are views for explaining a configuration and an operation method of the adhesion sensing unit included in the adsorption unit. In addition, Figure 5 is a view for explaining how to use the filter adsorption apparatus for the paint booth of the automobile maintenance shop shown in FIG.

As shown, the filter adsorption device 10 for the paint booth of the automobile repair shop according to the present embodiment includes a box-type cabinet 11, an exhaust fan 19, a plurality of partitions 21, an adsorption unit 30, and a fixed box. Means;

The cabinet 11 is a case through which air to be purified passes, and is divided into an upper space 10a and a lower space 10c based on the passage 10b. The air flows through the lower space and is purified, and then exhausted to the outside through the exhaust fan 19 of the upper space.

The door 13 is installed at one side of the cabinet 11. The door 13 is a blocking plate covering the lower space 10c and is fixed to the cabinet body through a plurality of fixing screws 13b. When the fixing screw 13b is loosened, the door 13 is opened and the lower space 10c is opened. Maintenance of the adsorption part filled in the lower space 10c can be easily performed. Reference numeral 13a denotes a handle.

In addition, the airtight confirmation unit 17 is installed above the door 13. The confidentiality checking unit 17 includes a first lamp 17a and a second lamp 17b. The first lamp 17a is a lamp that is turned on when the piezoelectric sensor 35f, which will be described later, is pressed to generate electricity. In addition, the second lamp 17b is a lamp that is turned on when the piezoelectric sensor 35f does not operate. Through the airtight confirmation unit 17, it is possible to check the adhesion state of the adsorption unit 30 to be described later in real time. In addition, the control unit 15 is located on the front surface of the cabinet 11. The controller 15 controls the overall operation of the filtration adsorption device 10.

The support base 12 is positioned below the cabinet 11. The support base 12 supports the cabinet 11 vertically and simultaneously secures a space under the cabinet 11 so that outside air flows into the lower space 10c through the bottom of the cabinet 11.

In addition, the filter bag 25 is installed in the center of the bottom of the lower space (10c). The filter dust collecting part 25 passes the air flowing into the lower space 10c and is primarily purified to have a support bracket 25a at its edge. Mounting of the filter dust collecting part 25 is made by fitting the support bracket 25a to the installation opening (not shown) formed in the bottom part of the cabinet 11.

The filter dust collecting part 25 plays a role of catching sand or other particulate contaminants in the contaminated air flowing into the lower space 10c. The life of the adsorption | suction part 30 becomes long by applying the filter dust collecting part 25 in this way. This is because the adsorption portion is not contaminated by particulate contaminants. As will be described later, activated carbon is embedded in the adsorption unit 30. When activated carbon is contaminated by particulate contaminants, the effective surface area is narrowed, and the ability to remove volatile organic matters is greatly reduced.

The exhaust fan 19 has an intake hood 19a, a fan body 19b, a rotor 19c, a motor 19d, and an exhaust duct 19e. The intake hood 19a is a passage that guides the air in the lower space 10c to the upper side. The purified air passing through each flow field 10d constituting the lower space 10c is collected while passing through the intake hood 19a and discharged through the exhaust duct 19e via the rotor 19c. The motor 19d is controlled by the control unit 15 and rotates the rotor 19c. The sound absorbing panel 18 is mounted on the inner wall surface of the cabinet 11 constituting the upper space 10a to absorb and remove noise generated when the exhaust fan 19 operates.

 On the other hand, the partition wall 21 is fixed vertically inside the lower space 10c to partition the lower space into a plurality of flow fields 10d, and guides the air introduced through the filter dust collector 25 upward in the vertical direction. It plays a role. The stream line of air is guided in the vertical direction by the partition wall 21, so that the angle of incidence of the air to the adsorption part 30 may have an acute angle θ. The angle is between 20 degrees and 45 degrees.

In addition, a plurality of engaging grooves 21a and 11a are formed on both surfaces of each partition wall 21 and inwardly facing surface of the cabinet 11. The locking grooves 11a and 21a are grooves for fixing and holding the adsorption portion 30 to form a predetermined interval in the vertical direction.

Reference numeral 23 is a differential pressure gauge. The differential pressure gauge 23 checks the pressure inside each flow field 10d and transmits the pressure to the control unit 15 so that the control unit outputs an appropriate control signal and confirms replacement and maintenance of consumables. The number and location of installation of the differential pressure gauge can vary.

The adsorption part 30 is paired two by one in the left and right direction, and three pairs are vertically spaced apart from each inside the flow field 10d. The air flowing into the lower portion of each flow field 10d passes through the adsorption portion 30 blocking the flow field 10d in order and is purified, and then discharged through the exhaust fan 19.

The adsorption part 30 is shown separately in FIG.

As shown, the adsorption | suction part 30 consists of the diamond block 31 and the activated carbon 33. As shown in FIG. The diamond block 31 is a porous case accommodating activated carbon 33, and the activated carbon 33 adsorbs and removes volatile organic materials passing through the adsorption part 30 while being filled in the diamond block 31.

The diamond block 31 has a predetermined thickness, takes the form of a hollow square plate, and has a plurality of air holes 31a through which air is passed. The air passing through the flow field 10d flows in through one air hole 31a and then exits through the activated carbon 33 to the opposite air hole 31a. In the meantime, the volatile contaminants are removed as described above.

When the volume of the lower space 10c is large, the adsorption portion 30 may be used by connecting a plurality of the suction portions 30 in the longitudinal direction (a direction in FIG. 3). What is important when using a large number of adsorption sections 30 is that the space between the adsorption sections 30 does not occur. If there is a gap between the contaminants pass through as it is because the air purification is not achieved.

For this reason, it is important to always monitor whether the adsorption portion 30 is in close contact in the longitudinal direction, and for this purpose, the adhesion detection unit 35 is applied. The adhesion detecting unit 35 is always detecting means for grasping the gap between the adsorbing units 30 adjacent to each other in the longitudinal direction.

The adhesion detecting unit 35 is shown in detail in FIGS. 4 and 5. FIG. 4 shows a state in which the neighboring adsorption unit 30 is open, and FIG. 5 shows a state in which the adsorption unit is in close contact and maintains airtightness.

The adhesion detecting unit 35 includes a housing 35a having a receiving space 35b, a support bracket 35k, a movable pusher 35c, a piezoelectric sensor 35f, a spring 35e, and a communication module 35g. .

The housing 35a is a hexahedral-shaped case and is located at one lower end of the suction part 30. It goes without saying that a groove (without reference numeral) to which the housing is fitted is provided on the outside of the adsorption part 30 so that the housing 35a can be installed. The housing 35a may be fixed to the diamond block 31 in various ways.

The support bracket 35k is fixed in the accommodation space 35b of the housing 35a to support the piezoelectric sensor 35f, the spring 35e and the movable pusher 35c. As long as it can perform this function, the shape of the support bracket may vary.

The piezoelectric sensor 35f is a known piezo element that generates electricity when a pressure is applied from the outside. It stands by being fixed to the support bracket 35k and is operated by the movable pusher 35c pushed in the direction of arrow z by the neighboring adsorption unit 30.

The movable pusher 35c is held in the housing 35a and is partially exposed to the outside of the housing by the action of the spring 35e, and is pushed into the housing 35a when the arrow z direction force is applied. To press the piezoelectric sensor 35f.

The communication module 35g is connected to the piezoelectric sensor 35f and amplifies a signal output from the piezoelectric sensor and wirelessly transmits the signal to the control unit 15. The control unit 15 determines whether the piezoelectric sensor 35f is currently being pushed by the movable pusher 35c through the communication module 35g, that is, whether the neighboring adsorption unit 30 is in close contact with each other. The first and second lamps 17a and 17b of the confirmation unit 17 are turned on and off.

On the other hand, the fixing means includes a panel holder 37. The panel holder 37 is a member fixed to the upper end and the lower end of each adsorption part 30, and the panel holders 37 are coupled to each other (by the magnetic force of the magnet 37d) or to the locking grooves 11a and 21a. Is fitted.

The panel holder 37 includes a holder body 37a, a hook 37c, and a magnet 37d.

The holder body 37a has a fitting space 37b for accommodating the end of the suction part 30. The upper end and the lower end of the adsorption part 30 are coupled to the holder body 37a in a state of being inserted into the fitting space 37b.

In addition, the hook (37c) is integrally provided on one side of the holder body (37a) and is fitted into the engaging groove (11a, 21a) serves to receive the supporting force from the partition wall 21 or the inner wall surface of the cabinet (11). . In addition, the magnet (37d) is fixed to the other side of the holder body (37a), that is, the opposite side of the hook (37c), by combining with the magnet (37d) of the mating panel holder 37, the pair of adsorption portion 30 is Keep inclined.

In FIG. 2, the panel holder 37 fixed to the upper end of the pair of adsorption part 30 is closely attached by the magnet 37d, and the panel holder 37 at the lower end is caught by the locking grooves 11a and 21a. Stay supported.

In contrast, the adsorption part 30 shown in FIG. 5 takes the form of a V shape. That is, the panel holder 37 fixed to the lower end of each adsorption part 30 is in close contact with the magnetic force of the magnet 37d, and the panel holder 37 at the upper end is fitted into and supported by both locking grooves 11a and 21a. will be.

Changing the installation pattern of the adsorption part 30 from the state of FIG. 2 to the state of FIG. 5 is easily performed through a simple rearrangement process.

As described above, the opening of the adsorption part 30 to the lower part as shown in FIG. 2 or the opening of the adsorption part 30 to the upper part as shown in FIG. 5 is considered in consideration of the utility of the adsorption part 30.

In general, the filtration adsorption tower for a paint booth is installed with a filter and activated carbon horizontally, so that the specific surface area of the activated carbon does not satisfy the design criteria. In this embodiment, the adsorption unit 30 is inclined so that the flow field is 10d. By having a large treatment area compared to the vertical cross-sectional area (flow area of the air) of the), the specific surface area of the activated carbon is maximized, thereby improving the treatment efficiency of volatile organic substances.

In addition, there is also an object for maximizing use of both surfaces of the adsorption unit 30. If only one side of the adsorption portion 30 is used as the surface that collides with air, the opposite side is rarely used and discarded, which is a waste of the activated carbon 33.

In the case of this embodiment, the adsorption part 30 is set in the manner shown in Fig. 2, and the lower half of the adsorption part 30 (based on the thickness direction) is used, and after a certain time of use, Likewise, the position of the adsorption part 30 can be switched so that the unused upper half can collide with the air. In other words, the adsorption part 30 can be used upside down.

6 is a view showing another embodiment of the filter adsorption device 10 for a paint booth of a car maintenance factory according to an embodiment of the present invention, and FIG. 7 is a perspective view of the panel structure 50 of FIG. In addition, Figure 8 is a perspective view separately showing the individual panel plate constituting the panel structure, Figure 9 is a view for explaining how to use the filter adsorption apparatus for paint booth of the automobile maintenance shop shown in FIG.

Hereinafter, the same reference numerals as the above reference numerals denote the same members having the same function.

As shown in FIG. 6, a plurality of panel structures 50 may be mounted inside each flow field 10d. The panel structure 50 has the structure shown in FIG. 7 and is horizontally spread over both side surfaces of the partition wall 21 and the pedestal 21b protruding from the inward surface of the cabinet 11. The pedestal 21b serves to support both lower ends of the panel structure 50.

The panel structure 50 is slidable while being supported by the pedestal 21b. For example, the panel structure 50 can be pulled out of the cabinet 11 (as if the drawer is opened) with the door 13 open. Therefore, the panel structure 50 used as shown in FIG. 6 is completely drawn out, rotated in a 180 degree direction, and then used again in the cabinet 11 to be used in the state of FIG. 9. As mentioned above, both surfaces of the activated carbon 33 can be used.

The panel structure 50 is composed of a frame 51 having a skeleton structure of a hexahedron, and a panel plate 40 installed inside the frame 51. The panel plate 40 is packaged by tying three adsorption units 30 to form a rectangular plate as a whole. In addition, the upper end of the panel plate 40 in the drawing is coupled to each other and the lower end is as wide as possible.

The panel plate 40 consists of three adsorption | suction parts 30 connected in the longitudinal direction, and the restraint frame 41 surrounding the periphery of the adsorption | suction part 30. As shown in FIG. The restraint frame 41 accommodates the three adsorption parts 30 therein and prevents the adsorption parts 30 from being opened. That is, the adsorption part 30 is to maintain the state in close contact with each other.

The restraint frame 41 is composed of a fixed beam 41a having an approximately C-shape and having one end open, and an opening and closing beam 41b connected to the open portion of the fixed beam 41a through a support pin 41c. . The opening and closing beam 41b can be rotated in the direction of the arrow k or the opposite direction using the support pin 41c as the rotation axis.

At the free end of the opening and closing beam 41b, a pin hole 41d is formed, and a pin hole 41e is also provided at the end of the fixed beam 41a. The pinholes 41d and 41e coincide in the state where the opening and closing beam 41b is rotated as far as possible in the direction of the arrow k, and the locking pin 41f passes. The locking pin 41f maintains the fixed state of the opening and closing beam 41b with respect to the fixed beam 41a. By coupling the opening and closing beam 41b to the fixed beam 41a, the adsorption part 30 accommodated inside the fixed beam 41a is in close contact with each other, and air is not leaked therebetween.

As mentioned above, although this invention was demonstrated in detail through the specific Example, this invention is not limited to the said Example, A various deformation | transformation is possible for a person with ordinary knowledge within the scope of the technical idea of this invention.

10: filtration adsorption device 10a: upper space 10b: passage
10c: subspace 10d: flow field 11: cabinet
11a: latching groove 12: support base 13: door
13a: Handle 13b: Fixing Screw 15: Control Unit
17: Confidentiality Confirmation Unit 17a: First Lamp 17b: Second Lamp
18: Absorption panel 19: Exhaust fan 19a: Intake hood
19b: fan body 19c: rotor 19d: motor
19e: Exhaust duct 21: Bulkhead 21a: Jamming groove
21b: Base 23: Differential pressure gauge 25: Filtration dust collecting part
25a: support bracket 30: adsorption part 31: diamond block
31a: air hole 33: activated carbon 35: adhesion sensor
35a: housing 35b: accommodation space 35c: movable pusher
35e: spring 35f: piezoelectric sensor 35g: communication module
35k: Support bracket 37: Panel holder 37a: Holder body
37b: Fitting space 37c: Hook 37d: Magnet
40: panel plate 41: binding frame 41a: fixed beam
41b: Opening and closing beam 41c: Support pin 41d, 41e: Pin hole
41f: Locking pin 50: Panel structure 51: Frame

Claims (4)

delete A cabinet having an upper space and a lower space communicating with each other and receiving outside air into the lower space through the bag filter, and having a door configured to cover the lower space in a lateral direction; An exhaust fan installed in the upper space and exhausting air from the lower space to the outside of the cabinet; A plurality of partition walls fixed vertically in the lower space to partition the lower space into a plurality of flow fields, and guide air introduced through the filter dust collector to the upper space through the flow field; A plurality of adsorption parts installed in the flow field to purify the air passing through the flow field, taking a form of a plate having a predetermined thickness and inclined to have an acute angle with respect to a vertical line; Fixing means for fixing the adsorption portion in the flow field,
Each of the adsorption units has a predetermined thickness and has a shape of a hollow rectangular plate and has a plurality of air holes, and activated carbon for adsorbing contaminants filled in the diamond blocks and passing through the diamond blocks in a thickness direction. To include, the partition wall and the inner wall surface of the cabinet, a plurality of engaging grooves are formed at regular intervals in the vertical direction,
The fixing means is fixed to each of the upper end and the lower end of the adsorption unit, the holder body to be coupled to the adsorption unit, provided on one side of the holder body and the hook is fitted to the engaging groove, the other side of the holder body is provided It is a panel holder including a magnet,
The adsorption unit forms a pair of two, the upper panel holder is coupled to each other by the magnetic force of the magnet and the lower panel holder is inserted into the locking groove to take the form of the lower portion, or the upper panel holder is inserted into the locking groove The upper and lower panel holders are coupled to each other by the magnetic force of the magnets, and the filter adsorption device for a paint booth of a car maintenance factory takes the form of opening. The method of claim 2,
The adsorption unit forms a set in a straight line in a state where a plurality of the in close contact with each other,
At one end of each adsorption part, the contact state between the adsorption parts is grasped. The housing is provided at one end of the diamond block and has an accommodation space, and electricity is generated by pressure applied from the outside and fixed in the accommodation space of the housing. A piezoelectric sensor to be exposed to the outside of the housing while being supported by the housing, a pusher pushed into the housing by an external force to pressurize the piezoelectric sensor, a spring elastically supporting the movable pusher to the outside of the housing, and the piezoelectric It is connected to the sensor and the close detection unit having a communication module for outputting a signal to the outside when the piezoelectric sensor is pressurized,
On the side of the cabinet, the first lamp is turned on in the state that the piezoelectric sensor is pressurized, and the second lamp is turned on when the piezoelectric sensor is not pressurized filter adsorption booth for the paint shop. delete

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