JP7333603B2 - working equipment - Google Patents

Description

The present invention relates to working devices.

For example, in workplaces where organic solvents are handled, a local exhaust system is provided to prevent workers from being exposed.

As this type of local exhaust system, as shown in Patent Documents 1 and 2, a system having a push-pull type ventilation system is known. A push-pull type ventilator has a push side (air supply side) device on the upstream side of the workbench and a pull side (intake side) device on the downstream side of the workbench. When a work object is to be treated with a treatment agent such as the above, rectified air is flowed toward the work table to prevent the operator from being exposed to the treatment agent.

JP 2013-174375 A JP 2017-146086 A

However, in the above conventional example, no consideration is given to the discharge of the air containing the processing agent, and there is a problem with the discharge.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a working device that can effectively exhaust air after being treated with a treating agent.

The features of the present invention are: a workbench through which rectified air flows; a foreign matter removing device provided on the downstream side of the workbench for removing foreign matter contained in the air flowing through the workbench; and a purifying device provided downstream of the device for purifying air from which foreign matter has been removed by the foreign matter removing device.

Preferably, an air-supply side device is provided upstream of the workbench, and the air-supply side device includes a blower unit in which a plurality of small blowers are arranged, and through which the air sent from the blower unit passes. A honeycomb plate having a honeycomb structure and a first air hole forming plate having a large number of air holes through which the air from the honeycomb plate passes are provided.

Preferably, the foreign matter removing device includes a second air hole forming plate provided on the workbench and having a large number of air holes formed therein, and a second air hole forming plate which is integrated with the air hole forming plate so that the air from the air hole forming plate passes through. It has a slit plate formed with a large number of slits extending in a direction, and an air flow changing part for changing the flow of air passing through the slit plate.

The air flow changing portion may include a top plate portion to which the air passing through the slit plate hits, and a side plate portion formed around the top plate portion and having a ventilation hole through which the air passes. good. Further, the air flow changing section may have a foreign matter discharge section for discharging foreign matter separated from the air that has passed through the ventilation hole.

Further, preferably, the purifying device may be of a photocatalytic type having a photocatalytic filter and a light source for applying light to the photocatalytic filter.

According to the present invention, since the air containing the processing agent is purified after the foreign matter is removed by the foreign matter removing device provided downstream of the work table, the air is efficiently purified by the purifying device. be able to.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows the outline of the working apparatus which concerns on embodiment of this invention. Fig. 2 is an exploded perspective view showing an air supply side device main body used in the embodiment of the present invention; 1 is a cross-sectional view showing a foreign matter removing device used in an embodiment of the present invention; FIG. 1 is an exploded perspective view showing a foreign matter removing device used in an embodiment of the present invention; FIG. 1 is a perspective view showing a purification device used in an embodiment of the present invention; FIG.

An embodiment of the present invention will be described based on the drawings.

FIG. 1 shows a working device 10 according to an embodiment of the invention. The work device 10 has a workbench 12 . The workbench 12 has a plate-shaped working portion 14 supported by legs 16 . A work object 18 using an organic solvent such as formalin is placed on the working unit 14, and the work object 18 is processed by an operator.

The upper portion of the working portion 14 of the workbench 12 has side surfaces open in three or four directions. Therefore, workers can work from three or four directions, and a plurality of workers can work from the sides.

An air supply side device 20 is provided above the workbench 12 . The air supply side device 20 is suspended from the ceiling via anchor bolts 22, for example. Further, the air supply side device 20 is provided with an air supply side device main body 24 .

As shown in FIG. 2, the air-supply-side device body 24 is constructed by vertically stacking an air blowing section 26, a first air hole forming plate 28, and a honeycomb plate 30. As shown in FIG.

The blowing unit 26 is configured by arranging a large number of blowers 32, which are axial fans, in the horizontal direction. The first air hole forming plate 28 is made of, for example, punching metal, and has a large number of circular first air holes 34 regularly formed in the left-right direction.

The honeycomb plate 30 has a honeycomb structure. Here, the honeycomb structure refers to a structure in which three-dimensional figures are arranged without gaps, and may be rectangular or hexagonal when viewed from above or below as in this embodiment. In this embodiment, a large number of square air passage chambers 36 are arranged in the horizontal direction when viewed from the vertical direction. The blowing area of the blower 32 is preferably 80% or more of the blowing area of the air passage chamber 36 .

The air blown by the blower 32, the first air hole forming plate 28 and the honeycomb plate 30 is rectified. Straightening is a highly directional flow in one direction, which in this embodiment causes the air to be directed toward the working portion 14 of the workbench 12 .

The thickness of the honeycomb plate 30 is, for example, 20-70 mm. Also, the distance between the honeycomb plate 30 and the first air hole forming plate 28 is, for example, 30 mm (±10 mm). Moreover, a plurality of first air hole forming plates 28 may be provided, and it is preferable that the respective air holes overlap in the vertical direction. Furthermore, the air blower 26 may be provided with an air volume adjustment function so that the air velocity can be maintained even if the blowing height of the air supply side device 20 changes.

A foreign matter removing device 38 is provided below the working section 14 of the working table 12, as shown in FIGS. This foreign matter removing device 38 is a device for removing foreign matter from the air containing the organic solvent and foreign matter that has passed through the workbench 12 . Here, foreign substances are substances other than air except for organic solvents, and include, for example, moisture, dirt, dust, and the like.

The foreign matter removing device 38 has a case 40 fixed to the working portion. The case 40 is integrally formed with the working portion 14 and has a side portion 42 extending downward and a bottom portion 44 extending obliquely downward toward the center from the side portion 42 . A support hole 48 for supporting a second air hole forming plate 46, which will be described later, is formed inside the side surface portion 42. As shown in FIG.

The foreign matter removing device 38 also has a second air hole forming plate 46 . The second air hole forming plate 46 is fitted in the support hole 48 so that the upper surface of the air hole forming plate 46 is aligned with the upper surface of the workbench 12 . Like the first air hole forming plate 30, the second air hole forming plate 46 is made of punching metal, for example, and has a large number of circular second air holes 50 regularly formed in the horizontal direction. The opening area of the second air hole 50 is desirably 1.3 times the opening area of the first air hole 36, but should be 1.1 times or more.

The foreign matter removing device 38 is provided so that the side surface portion 42 of the case 40 extends downward and the second air hole forming plate 46 faces the first air hole forming plate 30. The rectification of the air sent from the side device 20 is maintained even in the foreign matter removing device 36. - 特許庁

The foreign matter removing device 38 also has a slit plate 52 inside the side surface portion 42 of the case 40 . The slit plate 52 is formed with a large number of slits 54 extending in one direction and parallel to each other. Due to the slits 54 , the air passes through the slit plate 52 as parallel laminar flows. The slit plate 52 is detachable from the case 40 together with the second air hole forming plate 46 .

Further, the foreign matter removing device 38 is provided with an air flow changing portion 56 on the bottom portion 44 of the case 40 . The air flow changing portion 56 changes the flow of air containing foreign matter and organic solvent that has passed through the slits 54 of the slit plate 52 .

The air flow changing portion 56 is formed, for example, in a cylindrical shape and has a top plate portion 58 without holes and side plate portions 60 surrounding the top plate portion 58 and extending downward. Since no hole is formed in the top plate portion 58 , the air passing through the slit plate 52 hits the top plate portion 58 and changes the flow direction of the air so that the air flows around the top plate portion 58 . In addition, the side plate portion 60 has a large number of ventilation holes 64 formed at regular intervals around the periphery thereof, except for the stepped portion 62 formed at the lower end. The air whose flow is changed to the peripheral direction of the top plate portion 58 or the air which hits the bottom portion 44 of the case 40 is further guided to the vent hole portion 64 and the flow direction is changed.

The exhaust pipe 66 is connected to the foreign matter removing device 38 so that one end of the exhaust pipe 66 protrudes upward from the bottom surface portion 44 of the case 40 . This exhaust pipe 66 is connected to a purification device 68 which will be described later.

Further, the foreign matter removing device 38 is provided with a foreign matter discharge section 70 . The foreign matter discharge portion 70 has a drain pipe 72 and a foreign matter receiving portion 74 such as a tank connected to the drain pipe 72 . One end of the drain pipe 72 is connected to the bottom portion 44 of the case 40 around the exhaust pipe 66 . One end of the exhaust pipe 66 protrudes upward from the bottom surface portion 44 to prevent foreign matter from entering the exhaust pipe 66 . Since the air flow is changed by the air inflow changing portion 56 , the foreign matter is separated from the air, and the separated foreign matter is discharged to the foreign matter receiving portion 74 through the drain pipe 72 of the foreign matter discharging portion 70 .

The foreign matter removing device 38 not only removes foreign matter but also changes the flow of air, so that the wind speed of the air is suppressed and there is a silencing effect.

It is selected from the opening area of the air holes 50 of the second air hole forming plate 46, the opening area of the slits 54 of the slit plate 52, the opening area of the ventilation hole portion 64 of the air flow changing portion 56, and the opening area of one end of the exhaust pipe 66. At least two opening areas are preferably substantially the same. This prevents an increase in inflow resistance and further reduces noise.

Although one exhaust pipe 66 is provided in this embodiment, a plurality of exhaust pipes 66 may be provided. In this case, a duct collecting chamber for collecting the exhaust pipes 66 may be provided, and an orifice damper shape may be provided so as to adjust the air volume of each exhaust pipe 66 . An exhaust pipe 66 can also be provided above the duct collection chamber to collect dust and the like on the bottom surface, which can be cleaned.

A cleaning device 68 is provided on the downstream side of the foreign matter removing device 38 . As shown in FIG. 5, the purification device 68 has an intake port 78 and an exhaust port 80 formed in a housing 76 .

Filters 82 and 84 are provided at the intake port 78 and the exhaust port 80 so as to be replaceable. A blower 86 is arranged in the housing 76 . In this embodiment, the blower 86 is arranged on the intake port 78 side of the housing 76, but it may be arranged on the exhaust port 80 side. For example, three photocatalyst filters 88 , 90 and 92 are arranged in the housing 76 . Further, between the photocatalyst filters 88 and 90 and between the photocatalyst filters 90 and 92, a light source 94 made of a fluorescent lamp or an LED is arranged. Light source 94 may include an ozone lamp.

When the light from the light source 94 strikes the photocatalytic filters 88 , 90 , 92 , a photocatalytic reaction occurs and the organic solvent contained in the air sent from the foreign matter removing device 38 is decomposed. The exhaust port 80 is connected to a room separated by a wall from the room in which the workbench 12 is provided, or is connected to the outside, and the air from which the organic solvent has been removed is discharged.

Since air from which foreign matter has been removed by the foreign matter removing device 38 flows into the cleaning device 68, it is possible to prevent foreign matter, such as moisture, from adhering to the photocatalytic filters 88, 90, and 92 and degrading the decomposition efficiency of the organic solvent. can.

In the above embodiment, a photocatalytic purifying device is used, but the present invention is not limited to this, and a purifying device using activated carbon or the like may be used.

In the above-described embodiment, the air supply side device 20 and the foreign matter removing device 38 are arranged in the vertical direction (vertical direction) with the working section 14 of the working table 12 interposed therebetween, and the working section 14 is rectified in the vertical direction. However, as another embodiment, the air supply side device 20 and the foreign matter removal device 38 are provided in the left and right direction (horizontal direction) across the working section 14 of the work table 12, and the working section 14 has left and right Directional commutation may occur. In this case, one or two side surfaces of the upper portion of the working portion 14 can be opened, but it is desirable that two side surfaces are open so that a plurality of workers can work.

10 working device 12 working table 14 working part 16 leg part 18 work object 20 air supply side equipment 22 anchor bolt 24 air supply side equipment body 26 air blowing part 28 first air hole forming plate 30 honeycomb plate 32 blower 34 first Air hole 36 Air passage chamber 38 Foreign matter removing device 40 Case 42 Side surface 44 Bottom surface 46 Second air hole forming plate 48 Support hole 50 Second air hole 52 Slit plate 54 Slit 56 Air flow changer 58 Top plate 60 Side plate portion 62 Raised portion 64 Ventilation hole portion 66 Exhaust pipe 68 Purifier 70 Foreign matter discharge portion 72 Drain pipe 74 Foreign matter receiving portion 76 Housing 78 Air intake hole 80 Exhaust holes 82, 84 Filter 86 Blower 88, 90, 92 Photocatalyst filter 94 light source

Claims (4)

a workbench through which rectified air flows;
a foreign matter removing device provided on the downstream side of the workbench for removing foreign matter contained in the air flowing to the workbench;
a purifying device provided downstream of the foreign matter removing device for purifying air from which foreign matter has been removed by the foreign matter removing device;
has
The foreign object removing device includes a second air hole forming plate provided on the workbench and having a large number of air holes formed thereon, and a large number of slits extending in one direction so that the air from the air hole forming plate passes through. and an air flow changing portion that changes the flow of air that has passed through the slit plate,
The air flow changing section includes a top plate portion that is exposed to air passing through the slit plate, and a side plate portion that is formed around the top plate portion and has a ventilation hole through which the air passes. . It further has an air supply side device provided on the upstream side of the workbench, and the air supply side device includes a blower unit in which a plurality of small blowers are arranged and a large number of air blowers so that the air sent from the blower unit passes through. 2. The working device according to claim 1, comprising a first air hole forming plate having air holes formed therein, and a honeycomb plate having a honeycomb structure through which air from the first air hole forming plate passes. 3. The working device according to claim 1 , wherein the air flow changing section has a foreign matter discharging section for discharging foreign matter separated from the air that has passed through the ventilation hole section . 4. The working device according to any one of claims 1 to 3 , wherein the cleaning device has a photocatalytic filter and a light source for applying light to the photocatalytic filter.

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