JP7341460B2 - Maintenance structure of a dust collector, a dust collector equipped with the same, and a dust collector with a filter equipped with the same - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Act On March 14, 2019 and 15 of the same month of the same year, AZUMA Co., Ltd. released a dust collector with a filter to the public by exhibiting it at the exhibition "PVS-2 Series Private Show". .

The present invention relates to a maintenance structure for a dust collector, a dust collector equipped with the same, and a dust collector with a filter equipped with the same.

As dust collectors, wet type dust collectors as shown in Patent Documents 1 to 4 are known.

The dust collector of Patent Document 1 includes a duct, a blower, a primary water tank, and a secondary water tank. Among the dust sucked from the duct, those with relatively large particle sizes are collected in the primary water tank, and those with relatively small particle sizes are collected in the secondary water tank.

Patent Document 2 describes an apparatus in which a filter is combined with a wet dust collector including a first collection tank and a second collection tank. Similar to the dust collector of Patent Document 1 mentioned above, among the dust sucked from the duct, particles with a relatively large particle size are collected in the primary collection tank, and particles with a relatively small particle size are collected in the secondary collection tank. Collected in a tank. The dust collected in the secondary collection tank is filtered by a filter.

Patent Document 3 describes a device that removes soot and dust contained in exhaust gas using a dry filter and water stored at the bottom of a dust collector. The inside of the device is partitioned by two reversing plates, and when the gas containing soot and dust is reversed at the bottom end of the reversing plate, the soot and dust contained in the gas is said to fall into the water.

Utility model registration No. 3171096 Patent No. 6341585 JP2003-222016A

In dry dust collectors, when replacing the dry filter, there is a risk that dust adhering to the filter may be scattered into the environment. On the other hand, in a wet type dust collector, unlike a dry type dust collector, dust is collected using a liquid. With a wet dust collector, this possibility is low.

However, in wet dust collectors such as those disclosed in Patent Documents 1 to 3, the liquid that has collected dust is discharged from the drain, as shown in FIG. 1 of Patent Document 3, for example. When draining the liquid that has collected dust from the drain, the drain may become contaminated with dust or become clogged. In addition, the liquid containing dust discharged outside the dust collector has a large volume, making disposal processing complicated.

In view of the above problems, the present invention makes it possible to insert and remove a filter body into and out of a collection liquid storage tank through an opening, and to attach a lid to the opening without using a tool. It is an object of the present invention to provide a maintenance structure for a dust collector that can be attached and detached, and also to provide a dust collector equipped with the maintenance structure, and a dust collector with a filter equipped with the maintenance structure.

This is a maintenance structure for a dust collector that uses a collection liquid to collect dust contained in the air. It is equipped with a removable lid and a garbage filter shaped so that it can be taken in and out of the storage tank through an opening, and the lid can be operated with respect to the opening without tools. The above problem is solved by a dust collector maintenance structure configured to be detachable using a plurality of possible fasteners. Moreover, the above-mentioned problem is solved by a dust collector provided with the maintenance structure and a dust collector with a filter provided with the maintenance structure.

In the above-described maintenance structure, dust collector, and dust collector with a filter, the repair liquid containing dust is filtered through the filter and then discharged from the drain or the like. Therefore, it is possible to prevent the drain from becoming dirty or being blocked. Furthermore, it is easy to dispose of the liquid discharged from the drain of the dust collector. Since the lid can be attached to and removed from the opening without any tools, the filter can be easily taken out of the dust collector and cleaned or replaced.

In the maintenance structure, the dust collector, and the dust collector with a filter described above, it is preferable that the storage tank, the opening, and the lid be provided at the lower end of the dust collector. A liquid for collecting dust is stored in the storage tank, and the dust falls downward according to gravity. For this reason, it is preferable that the storage tank is provided at the lower end of the dust collector. It is preferable if the opening and the lid are also arranged at the lower end of the dust collector, since this makes it easier to take out the dust filter arranged inside the storage tank.

The plurality of fasteners can be, for example, at least one fastener selected from the group consisting of a toggle clamp, a snap lock, a toggle latch, and a screw with a grip.

The plurality of fasteners that fasten the upper end of the lid may be toggle clamps, and the plurality of fasteners that fasten the lower end of the lid may be screws with grips. preferable. By using a toggle clamp as the fastener at the upper end of the lid, the lid can be quickly and firmly attached and removed. By using a screw with a grip as the fastener at the lower end of the lid, the fastener does not interfere with the floor on which the dust collector is installed, and the lid can be firmly fixed to the opening.

The maintenance structure, dust collector, and dust collector with filter described above further include a locking mechanism that prevents the toggle clamp from being accidentally released, and the locking mechanism has a position where it engages with the grip of the toggle clamp and a position where the toggle clamp is engaged with the toggle clamp. Preferably, the rod body is configured to be able to swing between a position where it does not engage with the gripping portion of the clamp . This can prevent the toggle clamp from erroneously operating and the lid from coming off.

In the maintenance structure, the dust collector, and the dust collector with a filter described above, it is preferable that a support portion for receiving the lower end of the lid body is disposed at the lower end of the opening. By supporting the lower end of the lid with the support part, the position of the lid can be determined easily when the lid is attached or removed, and a gap can be prevented from forming between the lid and the opening. can.

According to the present invention, it is possible to take the filter body in and out of the collection liquid storage tank through the opening, and it is possible to attach and detach the lid to and from the opening without using any tools. In addition, it is possible to provide a maintenance structure for a dust collector that can perform the maintenance, and also to provide a dust collector equipped with the maintenance structure and a dust collector with a filter equipped with the maintenance structure.

It is a front view showing one embodiment of a dust collector. The structure of the filter body housed inside is shown with a broken line. FIG. 2 is a perspective view of the dust collector shown in FIG. 1. FIG. The structure of the filter body housed inside is shown with a broken line. FIG. 3 is a cross-sectional view taken at section AA in FIG. 2; FIG. 4 is an enlarged sectional view of a portion surrounded by a chain double-dashed line in FIG. 3; FIG. 2 is a perspective view showing a state in which a lid body is removed from the dust collector of FIG. 1, and a filter body housed in a storage tank and a cover of a drain port are removed. FIG. 6 is a sectional view taken at the BB section in FIG. 5; FIG. 7 is an enlarged sectional view of a portion surrounded by a chain double-dashed line in FIG. 6; It is a perspective view showing an example of a filter. FIG. 9 is a perspective view showing a state in which the openings of the filter body are put together when the filter body of FIG. 8 is taken out. It is a sectional view showing one embodiment of a dust collector with a filter.

EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of a dust collector and a dust collector with a filter provided with a maintenance structure for a dust collector of the present invention will be described with reference to the drawings. FIGS. 1 to 9 show an embodiment of a dust collector, and FIG. 10 shows an embodiment of a dust collector with a filter.

As shown in FIGS. 1 to 3, the dust collector 1 of this embodiment includes a duct 11 that sucks dust into the dust collector, and a duct 11 disposed below the duct 11 that stores liquid for collecting dust. 1 storage tank 12, and a second storage tank 13 which is arranged adjacent to the first storage tank 12 and stores a liquid for collecting dust; It has an arcuate part 14 that brings a liquid containing dust into contact to generate mist, a plurality of baffle plates 15 arranged above the arcuate part 14, and a blower 16 arranged above the baffle plates 15.

The first storage tank 12 and the second storage tank 13 are separated by a first partition wall 17. A space above the first storage tank 12 in which the duct is arranged and a space above the second storage tank 13 in which the plurality of baffle plates 15 are arranged are separated by a second partition wall 18. Further, the space above the plurality of baffle plates 15 and the space where the duct 11 is arranged are partitioned off by a third partition wall 19.

A plurality of angles 20 each having an L-shaped cross section are arranged between the first partition wall 17 and the second partition wall 18 . Similarly, a plurality of angles 20 each having an L-shaped cross section are arranged between the arcuate portion 14 and the lowest baffle plate 15.

When the blower 16 is operated, air containing dust is sucked from the duct 11. Among the dust particles, particles having a relatively large particle size collide with the inner wall of the duct 11, fall into the liquid stored in the first storage tank 12, and are collected. The first storage tank 12 houses a filter body 21, which will be described later. The dust collected by the liquid stored in the first storage tank 12 is temporarily stored in the filter body 21.

The air containing dust that has passed over the first storage tank 12 passes between the first partition wall 17 and the second partition wall 18 and enters the arcuate portion 14 . The lower end of the arcuate portion 14 is flooded with the collection liquid. In the arcuate portion 14, the liquid stored in the second storage tank 13 and air containing dust come into contact and are stirred. At this time, dirt with relatively small particle size that was not collected in the first storage tank 12 is collected. In the arcuate portion 14, the gas containing dust comes into contact with the liquid on the surface of the second storage tank 13, swirls up the liquid, and generates mist. This mist and the gas containing dust come into contact, and the dust, which is relatively small in particle size and which was not collected in the first storage tank 12, is also collected by the mist. The mist contacts the plurality of baffle plates 15 and the plurality of angles 20, turns into droplets, falls, and returns to the second storage tank 13.

The gas from which dust has been removed in the second storage tank 13 is sucked by the blower 16 and exhausted to the outside of the dust collector 1 from the exhaust port.

In the dust collector 1 described above, the first storage tank 12 collects dust with a relatively large particle size. If the dust collector 1 continues to operate, dust with relatively large particle sizes accumulates in the first storage tank 12, and cleaning becomes necessary. During cleaning, the valve of the drain port 22 is opened to drain the liquid from the first storage tank 12. At this time, the dust collected by the liquid in the first storage tank 12 adheres to the inner wall of the first storage tank 12 and the drain port 22, making cleaning thereof complicated. Further, there is a possibility that the drain port 22 is blocked by dust.

The dust collector 1 of this embodiment is provided with a maintenance structure so that the dust collected in the first storage tank 12 can be easily removed and the inside of the dust collector 1 can be repaired when it breaks down. As shown in FIGS. 1 to 7, the maintenance structure includes an opening 23 disposed in the first storage tank 12 that stores liquid for collection, and a lid body that is detachable from the opening 23. 24, and a garbage filter 21 having a shape that allows the garbage to be taken in and out of the first storage tank 12 through the opening 23, and the lid 24 can be operated with respect to the opening 23 without tools. It was constructed so that it could be attached and detached using multiple fasteners that could be attached or removed.

In the dust collector 1 of this embodiment, the opening 23 is provided at the lower end of the dust collector 1 in accordance with the position of the first storage tank 12, as shown in FIGS. 1 to 7. If the surface where the duct 11 of the dust collector 1 opens is the front, the opening 23 is also provided in the middle of the front. The position where the opening is provided is not particularly limited, but if it is provided adjacent to the collection liquid storage tank, the opening 23 will be in communication with the first storage tank 12, making maintenance inside the storage tank easy. This is preferable.

In the dust collector 1 of this embodiment, the opening 23 has a rectangular shape when viewed from the front, as shown in FIG. The shape of the opening is not limited to this, and may be any shape suitable for performing maintenance inside the storage tank. Similarly, the lid body 24 has a rectangular shape when viewed from the front, as shown in FIG. The shape of the lid is not limited to this, and may be any shape as long as it can close the opening in a liquid-tight and air-tight manner.

As shown in FIG. 7, the lid body 24 of the dust collector 1 of this embodiment is constructed by bending a stainless steel plate and welding parts such as grooves to the stainless steel plate, which will be described later. The edges of the four sides of the plate are bent, grooves 25 and 26 are provided adjacent to the edges, and a packing 27 made of an elastic body is fixed in the grooves of the grooves 25 and 26, and the packing 27 is fixed along the four sides. It has a shape in which a packing 27 is arranged. At the lower end of the lid 24, the groove 26 is welded to the outside of the edge of the bent stainless steel plate. A hollow tube 28 having a square cross section and sealed at both ends in the longitudinal direction is fixed by welding to the surface of the groove 26 opposite to the surface on which the packing 27 is provided. On three sides of the lid body 24 other than the lower end, grooves 25 are fixed to the inner side of the edges by welding. The grooved strip 25 described above has a shape in which a protruding strip 252 is welded to an angle member 251 bent into an L-shape. In the concave strip 25, the protrusion 252 and the edge of the lid body 24 form a concave portion in which the packing 27 is accommodated. The grooved strip 26 described above has a shape in which protrusions 261 protrude from both ends of the flat plate 26 . In the concave strip 26, the protrusions 261, 261 form a concave portion in which the packing 27 is accommodated.

The lid 24 is provided with a window 29 that extends along the vertical direction of the first storage tank 12 . Since the window 29 is made of a transparent material such as an acrylic plate or a pressure-resistant glass plate, the interior of the first storage tank 12 can be seen through the window 29. The acrylic plate and the like that make up the window 29 are fixed to the stainless steel plate that makes up the lid 24 with a plurality of bolts and nuts. The acrylic plate or the like may be fixed using an adhesive or the like. Note that the structure of the lid body is not limited to the above example, and may be configured to be liquid-tight so that the water stored in the storage tank does not leak.

In the dust collector 1 of this embodiment, as shown in FIGS. 3, 5, and 8, a filter body 21 for dust is provided that can be taken in and out of the first storage tank 12 through an opening 23. We are prepared. In the dust collector 1 of this embodiment, the filter body 21 is constituted by a mesh 211 whose opening is smaller than the particle size of the dust collected in the first storage tank 12 . As shown in FIG. 5, when the net 211 is unfolded, the size of the net 211 is larger than the opening 23. However, as shown in FIG. 9, when the inlet 212 of the net 211 is closed, the net 211 can be shaped so that it can be taken in and out of the first storage tank 12 through the opening 23. The net 211 is made of plastic such as nylon, and has enough flexibility to be deformed, as shown in FIG. The net 211 includes a plurality of annular hanging parts 213. For example, by piercing the hanging portion 213 with a rod, the filter body 21 can be taken out of the dust collector 1 without directly touching the filter portion. Furthermore, the filter body 21 can be fixed by hanging the plurality of hanging parts 213 on hanging tools provided on the inner wall of the first storage tank or the like.

The filter body is not limited to the mesh 211, and for example, a mesh smaller in size than the openings 23 may be used, although it cannot be deformed as shown in FIG. Further, a cloth such as a woven fabric or a non-woven fabric may be used, or a basket made of punched metal having a plurality of minute through holes may be used.

In the dust collector 1 of this embodiment, a cover 30 is provided between the drain port 22 and the filter body 21 in order to prevent the filter body 21 from getting caught in the drain port 22 when the drain port 22 is opened. There is. The cover 30 is composed of an arc-shaped plate with a plurality of minute through holes arranged therein, and has water permeability. The cover may be any material as long as it has water permeability and can prevent the filter from being caught in the filter, for example, a plate with a plurality of through holes, or a rigid mesh made of metal, plastic, etc. Can be mentioned.

In the dust collector 1 of this embodiment, as shown in FIG. 4, the upper end of the lid 24 is fixed by a plurality of toggle clamps 31, and the lower end of the lid 24 is fixed by a plurality of screws 32 with grips. Fixed. The toggle clamp 31 and the screw with grip 32 are both fasteners that can be operated by hand and do not require any tools to operate. Therefore, for example, when removing the lid body 24 from the opening 23 in order to take out the filter body 21 from the first storage tank 12, maintenance can be easily performed without requiring any tools.

Fasteners that can be operated without tools may be any that can be operated by hand and are not limited to toggle clamps or screws with grips. Such fasteners include, for example, snap locks or toggle latches.

As shown in FIGS. 4, 5, and 7, the dust collector of this embodiment includes a rod 33 that is swingably configured as a locking mechanism for the toggle clamp 31 at the upper part of the opening 23. The rod body 33 includes a locking portion 331 that locks on the lever of the toggle clamp 31, and an arm portion 332 that extends from the left and right ends of the locking portion 331 and is rotatably supported by the support body 333. and has. The support body 333 extends along the extending direction of the rod body 33 and is fixed to the upper end of the opening 23 .

As shown in FIGS. 4 and 7, the rod 33 swings between a position where it engages with the grip (lever) of the toggle clamp 31 and a position where it does not engage with the grip of the toggle clamp 31. It is configured to be movable. As shown in FIG. 4, when the rod 33 is engaged with the grip 311 of the toggle clamp 31, the grip 311 is interfering with the rod 33, so the grip 311 of the toggle clamp 31 is It is designed to prevent the fastened state from being released due to mistaken operation. As shown in FIG. 7, when the rod 33 is not engaged with the gripping part 311 of the toggle clamp 31, the gripping part 311 does not interfere with the rod 33, so the gripping part of the toggle clamp 31 311 to displace the pressing portion 319 of the toggle clamp 31 in a direction away from the lid body 24, thereby releasing the fastened state.

In the dust collector 1 of this embodiment, as shown in FIGS. 5 and 7, a support portion 34 for receiving the lower end of the lid 24 is disposed at the lower end of the opening 23. The support part 34 is made of a plate material, and includes a receiving part 341 extending in a direction protruding from the dust collector 1 , a falling prevention part 342 extending from the end of the receiving part 341 to the upper side of the dust collector 1 , and a falling prevention part 342 extending from the end of the receiving part 341 to the upper side of the dust collector 1 . It has an extending fixing part 343. The fixing part 343 is fixed to the lower edge of the opening 23. The fixing part can be fixed to the dust collector 1 by welding or a fixing device such as a screw.

As shown in FIG. 2, the width of the support portion 34 is smaller than the width of the lid 24. In the example of FIG. 2, the width of the support portion is approximately 30 to 80 mm. The width of the support portion can be configured to be larger, for example, the width of the support portion can be made to be approximately the same size as the lid body.

When attaching the lid 24 to the opening 23, insert the lower end of the lid 24 into the recess formed by the receiving part 341, the fall prevention part 342, and the surface of the dust collector 1, and then insert the upper end of the lid 24 By pressing against the opening 23, the lid 24 is placed in an appropriate position. In this state, by operating the fastener arranged at the lower end of the opening 23 and the fastener arranged at the upper end of the opening 23, the lid body 24 covers the opening 23 in an appropriate position. It will be fixed like this. Since the lid 24 includes the packing 27, by pressing the lid 24 against the opening 23 with the fastener, a liquid-tight and air-tight state is achieved.

As shown in FIG. 5, protrusions 35 are provided at the left and right ends of the opening 23 as positioning parts for determining the left and right positions of the lid 24. When inserting the lower end of the lid 24 into the support part 34, if the lid 24 is made to fit between the left protrusion 35 and the right protrusion 35, the opening can be opened even in the left and right direction. The lid body 24 is less likely to shift relative to the lid body 23. The positioning section may be anything that can determine the position of the lid body 24 in the left-right direction, and may be formed of a protrusion, a plate-like protrusion, a block-like protrusion, or the like.

In the dust collector 1 of this embodiment, a toggle clamp 31 is used as a fastener for fixing the upper end of the lid 24. As shown in FIG. 7, this toggle clamp 31 includes a first link arm 312 having a gripping portion 311 at its tip, a second link arm 314 having a base 313, and a first link arm 312 and a second link. It has a third link arm 315 that connects to the arm 314, an actuating arm 316, and a fourth link arm 317 that includes a pressing portion 319 disposed at the tip of the actuating arm 316. The pressing portion 319 is made of an elastic body such as rubber.

As shown in FIG. 4, when the grip part 311 is tilted away from the actuation arm 316, the grip part 311 and the actuation arm 316 are in a substantially linear state. In this state, the lid body 24 is pressed against the opening 23 with a strong fastening force due to the lever principle. As shown in FIG. 7, when the gripping part 311 is tilted so as to approach the pressing part 319 , the first link arm 312 to the fourth link arm 317 are actuated, and the operating arm rotates about 80 to 100 degrees. and approaches the grip part 311. At this time, the connecting shaft between the first link arm 312 and the third link arm 315 is displaced upward, and the connecting axis between the first link arm 312 and the second link arm 314 is displaced diagonally upward, and the connecting axis between the first link arm 312 and the second link arm 314 is displaced diagonally upward. It is stored in the recess. This releases the fastening at the upper end of the lid 24. When removing the lid 24 from the opening 23, the actuating arm 316 rotates significantly, and the pressing portion 319 is retracted to a position where it does not interfere with the removal of the lid 24. Therefore, the lid body 24 can be removed smoothly. The toggle clamp 31 can be easily operated by manually operating the gripping part 311, so no special tools are required for maintenance.

In the dust collector 1 of this embodiment, as shown in FIG. 7, the base portion 33 of the toggle clamp is fixed to a rod-shaped attachment portion 318 provided below a support body 333 that supports the locking mechanism. The position of the pressing part 319 of the toggle lamp 31 is adjusted by the rod-shaped attachment part 318 so that it can come into pressure contact with the surface of the lid body 24. The attachment portion 318 may be omitted depending on the thickness of the lid and the shape of the opening.

In the dust collector 1 of this embodiment, the lower end of the lid 24 is fixed with screws 32 with a plurality of grips. For the screw 32, a screw hole is provided in a support portion 34 that supports the lower end portion of the lid body 24, and the screw 32 with a grip portion is screwed into this screw hole. With the screw 32 screwed into the support portion 34, the tip portion of the screw 32 protrudes from the inner wall of the support portion 34 and comes into pressure contact with the hollow tube 28 of the lid 24. Since the pressure of the liquid stored in the first storage tank 12 acts on the lower end of the lid 24, if the fastening force is insufficient, the liquid may leak. In the dust collector of this embodiment, the lower end of the lid body 24 is fastened with a screw, so that a strong fastening force can be obtained. Further, since the screw 32 with the grip does not involve an operation such as tilting the lever, there is no problem that the lever comes into contact with the floor surface on which the dust collector 1 is installed, making it impossible to operate the fastener. Since the screw 32 is provided with a gripping portion 321, by operating the gripping portion 321, the lid body can be attached and removed without any tools and maintenance can be performed. The tip of the screw 32 is configured to come into pressure contact with a hollow tube 28 provided in the lid body 24. Since the surface strength of the hollow tube 28 is greater than that of the surface of the lid 28, measures are taken to prevent the lid 24 from being easily damaged by the pressure of the screw 28. Furthermore, by adjusting the extent to which the screw 28 protrudes from the support portion 34, excessively large pressure is prevented from acting on the hollow tube 28.

Examples of the dust collected by the dust collector include fumes generated during laser processing and welding of metals, metal powder generated during cutting of metals, and dust generated during cutting and buffing of plastics.

When performing maintenance on the dust collector 1 of this embodiment, for example, the following procedure is performed. First, the dust collector 1 is operated with the filter body 21 housed, and the state of the first storage tank 12 is visually checked through the window 29 of the lid body 24. If it appears that dust has accumulated in the filter body 21, the operation of the dust collector 1 is interrupted and the liquid in the first storage tank 12 is discharged from the drain port 22. Then, the lid body 24 is removed by operating the toggle clamp 31 and the screw 32 with the grip part. After that, the filter body 21 is taken out from the opening 23 and the new filter body 21 is stored in the first storage tank 12, the lid body 24 is placed over the opening 23, and the toggle clamp 31 and the screw 32 with the grip part are attached. Fix it with. In this state, restart the operation of the dust collector.

In the above embodiment, an example was shown in which the maintenance structure is applied to the dust collector 1 having the first storage tank 12 and the second storage tank 13 as a dust collector. The maintenance structure can also be applied to a single-layer dust collector that includes one tank for storing liquid for collecting dust. If the dust collector is configured to collect relatively large dust in the first storage tank 12 and to collect relatively small dust in the second storage tank 13 as in the above embodiment, the filter body 21 Even if the opening of the filter is relatively large, it is preferable because it makes it difficult for dust to enter the waste water, prevents the problem of clogging of the filter, and improves liquid drainage from the filter.

The dust collector to which the maintenance structure is applied may have any configuration as long as it includes a storage tank. The structure for suctioning air containing dust, the number of storage tanks, the number of baffle plates, etc. are not particularly limited.

The above maintenance structure can also be suitably used for the dust collector 1 with the filter 4 shown in FIG. The configuration of the dust collector 1 shown in FIG. 10 is similar to the configuration of the dust collectors shown in FIGS. 1 to 7. In addition, in FIG. 10, structures such as the lid body 24, the opening 23, the filter body 21, the toggle clamp, and the screw 32 with a grip portion are omitted.

The dust collector 1 with a filter shown in FIG. 10 includes a filter 4 in addition to the dust collector 2 described above. In this dust collector 1 with a filter, the liquid in the second storage tank 13 containing dust is supplied to the liquid supply section 42 of the filter 4 through the first liquid feed pipe 41 . A liquid containing dust is supplied from the liquid supply section 42 to the filter cloth 43 . Filter cloth 43 is spread between a plurality of rollers. The liquid supplied from the liquid supply section 42 is filtered by a filter cloth 43, and the filtered liquid is sucked by a pump 44 and passes through a storage tank 45 and a second liquid feeding pipe 46 to the second storage tank 13. be returned. When the filter cloth 43 becomes clogged, the liquid level in the filtration chamber rises and is detected by the liquid level sensor 47. Based on the signal detected by the liquid level sensor 47, a new filter cloth is automatically supplied to the filtration chamber from the roll 48 around which the new filter cloth is wound. The filter cloth soiled by filtration is discharged into a storage chamber 49 adjacent to the storage tank 45.

In the dust collector with a filter shown in FIG. 10, the filter 4 circulates the liquid stored in the second storage tank 13 while purifying the dust by filtration. Thereby, the liquid in the second storage tank 13 is maintained in a clean state. The liquid in the first storage tank 12 can be easily kept clean by using the above maintenance structure. In this way, dust can be collected while maintaining the liquid in the first storage tank 12 and the second storage tank 13 in a clean state with little effort.

1 Dust collector 23 Opening part 24 Lid body 21 Filter body 31 Toggle clamp 32 Screw 33 Rod body 34 Support part 4 Filter machine

Claims (8)

This is a maintenance structure for a dust collector that uses a collection liquid to collect dust contained in the air.
The maintenance structure includes an opening disposed in a collection liquid storage tank, a lid that is removable from the opening, and a shape that allows the liquid to be taken in and out of the storage tank through the opening. Equipped with a dust filter,
The lid body is configured to be removable from the opening with multiple fasteners that can be operated without tools .
Among the plurality of fasteners, the plurality of fasteners that fasten the upper end of the lid are toggle clamps,
Among the plurality of fasteners, the plurality of fasteners that fasten the lower end of the lid are screws with grips,
In the maintenance structure of the dust collector, the pressing part of the toggle clamp is retracted to a position separated from the lid body when the connection is released, and the pressing part of the toggle clamp is in a position in contact with the lid body when the connection is closed. The maintenance structure for a dust collector according to claim 1, wherein the storage tank, the opening, and the lid are provided at a lower end of the dust collector. The locking mechanism further includes a locking mechanism for preventing the toggle clamp from being accidentally released, and the locking mechanism has a locking mechanism that is arranged between a position where the toggle clamp is engaged with the gripping part of the toggle clamp and a position where the toggle clamp is not engaged with the gripping part of the toggle clamp. The maintenance structure according to claim 1 , which is a rod body configured to be swingable. 4. The maintenance structure according to claim 1 , wherein a support part for receiving a lower end of the lid is disposed at a lower end of the opening. 5. The maintenance structure according to claim 1, wherein a projection for determining the position of the lid in the left-right direction is provided at the left end or right end of the opening. 6. The maintenance structure according to claim 1, wherein the base of the toggle clamp is fixed to a rod-shaped attachment part. A dust collector comprising the maintenance structure according to any one of claims 1 to 5 . A dust collector with a filter comprising the maintenance structure according to any one of claims 1 to 5 .

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