JP6050101B2 - Dust collector - Google Patents

Description

  The present invention relates to a dust collector that sucks dust generated from a processing machine and purifies air in a factory, and more particularly, a dust collector that cleans air by arranging a filter for collecting dust in a horizontal shape. About.

  2. Description of the Related Art Conventionally, industrial dust collectors that suction and purify dust are widely used to purify air in factories. As such a dust collector, one in which filters are juxtaposed in the lateral direction and the filter can be easily pulled out from the lateral direction during maintenance and inspection is widely known.

  For example, in Patent Document 1, air containing dust (dust-containing air) that flows in from a dust-containing air inlet provided in the lower part of the apparatus main body is carried by an updraft and is above the dust-containing air inlet. There is disclosed a dust collector that collects dust by passing through a plurality of provided dust collection bags and discharges purified air (clean air) from an outlet. In this dust collector, dust is removed by discharging high pressure air for backwashing downward from the ejection pipe to each dust bag, and the dust that has been removed is provided at the lower part of the apparatus body. Deposit on the hopper.

  Further, for example, Patent Document 2 discloses a dust collector in which a rectifying chamber provided with a suction port on one side and a filter chamber containing a filter are partitioned by a partition plate made of punching metal. In the rectifying chamber, a plurality of rectifying plates are provided so as to block the flow of the dust-containing airflow.

JP 60-172328 A Japanese Patent Application Laid-Open No. 08-215607

  However, the dust collecting apparatus described in Patent Document 1 has a problem that dust once accumulated in the hopper part rises (re-scatters) due to the rising airflow that carries the dust-containing air. In this case, since the dust that has re-scattered is collected again in the dust bag, the life of the dust bag may be reduced. In addition, since there is no rectifying mechanism, dust-containing air cannot be dispersed in the apparatus, and dust cannot be collected uniformly in each dust bag, which may cause variations in the life of each dust bag. There was also. Furthermore, the dust accumulated on the hopper cannot be efficiently collected and discarded due to the re-scattering of the dust.

  Moreover, in the dust collector of patent document 2, since the rectification | straightening chamber was provided in the dust collector, the enlargement of dust collector itself was invited. Further, since the suction port is provided on only one side, there is a risk that it may be difficult to route the duct for introducing dust-containing air from the dust source to the dust collector. Even if a separate suction port is provided on the opposite side of one suction port, the rectifying effect could not be exhibited.

  The present invention has been made to solve the above-described problems, and it is possible to prevent dust that has been collected and accumulated from re-scattering and to reduce the size while having an appropriate rectifying effect of dust-containing air. It aims at providing the dust collector which can be performed.

  In order to achieve the above-described object, a first dust collector according to the present invention is a dust collector that collects dust by filtering dust-containing air sucked into a dust collecting chamber from a suction port. A rectifying hole is formed, and a rectifying plate provided in the dust collection chamber so as to block a flow of dust-containing air sucked from the suction port, and a filtration surface is directed to the side below the suction port and the rectifying plate. And a filter provided in the dust collection chamber in an inclined posture, and a flow path of dust-containing air is formed downward along the filtration surface of the filter, and the lower part of the current plate is the flow path It is provided so that it may extend to the upper part of this.

  According to the first dust collector of the present invention, the dust-containing air is appropriately determined by the positional relationship between the suction port, the current plate and the filter, and the flow path forming direction and the lower part of the current plate extending to the upper part of the flow channel. To the flow path in the dust collection chamber, and a downdraft is generated in the dust collection chamber (flow path). For this reason, for example, re-scattering of dust accumulated in the lower part of the dust collection chamber can be prevented. As a result, re-collection of dust into the filter due to re-scattering can be prevented, a reduction in filter life can be suppressed, and accumulated dust can be efficiently collected. In addition, the flow of dust-containing air introduced from the suction port (dust-containing airflow) disperses in the direction along the rectifying plate and the direction straight through the rectifying hole when it hits the rectifying plate. It is possible to control the flow velocity of the dust-containing air at a substantially constant speed between the suction port side and the back side of the rectifying plate (dispersion / rectifying action). Therefore, since the distribution of the dust-containing air entering from the side surface (filtering surface) of the filter can be made uniform, the filter can be used effectively and the dust collection performance is improved. The rectifying plate and the filter are both provided in a single dust collection chamber, and the lower part of the rectifying plate extends to the upper part of the flow path. For this reason, for example, a partition plate for partitioning the dust collection chamber into the filter chamber and the rectifying chamber can be omitted, and the vertical dimension of the dust collector can be shortened. Thereby, size reduction of a dust collector can be achieved.

  The second dust collector of the present invention is the above-described first dust collector of the present invention, wherein the lower part of the rectifying plate has a width in a direction perpendicular to the direction of flow of the dust-containing air in the upper part of the flow path. It is provided so that it may partition equally.

  According to the second dust collector of the present invention, since the flow path width is equally divided (divided), the air volume passing through each partitioned flow path can be made uniform. Thereby, a stable downflow of dust-containing air can be generated, and the dust collection performance can be improved by effectively using the filter.

  A third dust collector of the present invention is the dust collector of the first or second of the present invention described above, wherein the suction port is provided on an upper side surface of the dust chamber, and the current plate is A plurality of rectifying plates are provided at predetermined intervals along the left-right direction, and the rectifying plate on the suction port side is provided to be inclined downward from the upper end toward the suction port side.

  According to the third dust collecting device of the present invention, at least the current-carrying plate on the suction port side is inclined, so that the dust-containing air is appropriately dispersed and the dust-containing air having an appropriate air volume passes through the current-carrying plate. Thereby, since the air volume which passes a flow path can be equalize | homogenized, dust collection with a filter can be performed efficiently. Moreover, it can reduce that dust adheres to the surface of a baffle plate.

  According to a fourth dust collector of the present invention, in the third dust collector of the present invention described above, the suction port is provided in a pair at a position facing the dust collecting chamber. It is provided so that it may become symmetrical.

  According to the fourth dust collecting apparatus of the present invention, since the suction ports are respectively provided at positions facing the dust collecting chamber, it is easy to route the duct for introducing dust-containing air from the dust generation source. Can be done. Moreover, since the rectifying plate is provided so as to be bilaterally symmetric with respect to each suction port, the same rectifying effect can be exhibited regardless of which suction port is connected to the duct.

  According to a fifth dust collector of the present invention, in the third or fourth dust collector of the present invention described above, the lower part of the current plate on the suction port side extends below the upper end of the filter surface of the filter. It is provided so that it may come out.

  According to the fifth dust collector of the present invention, the rectifying plate extends to a position facing the filter surface of the filter in the upper part of the flow path, so that the dust-containing air can be more appropriately guided to the flow path. A downdraft can be generated in the dust collection chamber. Thereby, re-scattering and re-collecting of dust can be prevented, and the lifetime reduction of the filter can be suppressed.

  The sixth dust collector of the present invention is the dust collector of any one of the third to fifth of the present invention described above, wherein the opening ratio of the rectifying plate on the suction port side is different from that of the suction port. The opening ratio of the current plate is set to be larger in a range of 20 to 30%.

  According to the sixth dust collector of the present invention, since the air volume of the dust-containing air passing through the airflow rectifying plate increases by increasing the opening ratio of the airflow rectifying plate on the air inlet side, A lot of dust-bearing air also hits the other baffle plates away. Thereby, regardless of the distance from the suction port, it is possible to exhibit a dispersion / rectification action without variation between the respective rectifying plates, and it is possible to generate a stable downflow of dust-containing air.

  A seventh dust collector of the present invention is the dust collector according to any one of the first to sixth of the present invention described above, wherein the filter has a pair of filter media arranged facing each other in a standing posture through a gap. The clean air after the dust is filtered from the dust-containing air by each of the filter media is discharged from one of the gaps.

  According to the seventh dust collecting device of the present invention, since the dust-containing air is filtered by the pair of filter media arranged opposite to each other, the amount of dust collected per filter media is higher than that in the case of using one filter media. Decrease. Thereby, the lifetime of the filter can be extended. Moreover, since it is arranged in a standing posture, dust can be collected efficiently without hindering the downdraft in the flow path.

  The eighth dust collector of the present invention is the dust collector according to any one of the first to seventh of the present invention described above, wherein the filter has a filter medium formed in a pleat shape, and the fold of the filter medium is vertically aligned. It is arranged to extend.

  According to the eighth dust collector of the present invention, since the filter medium has a pleated shape along the descending airflow, the filter can collect dust more appropriately without obstructing the descending airflow. it can.

  A ninth dust collector of the present invention is the dust collector according to any one of the first to eighth of the present invention described above, wherein the suction port is provided on an upper side surface and the current plate is provided on an upper portion. A partition plate that is provided adjacent to a dust chamber and a side of the dust collection chamber and through which clean air filtered through the filter passes, and provided above the clean chamber, A suction fan that generates a suction force from the suction port toward the dust collection chamber and the clean chamber; and a bucket that is provided at a lower portion of the dust collection chamber and receives dust that has been removed from the filter, The filter is formed by a pair of filter media arranged opposite to each other via a gap, and the gap communicates with the clean chamber through an opening formed in the partition plate, and dust air is evacuated by the filter media. Dust was collected by filtration The clean air, characterized in that it is discharged to the outside from the cleaning chamber by the suction fan.

  According to the ninth dust collector of the present invention, a downdraft is generated in the dust chamber (flow path) by driving the suction fan, and the dust is filtered by the filter (a pair of filter media), thereby supplying clean air. It is discharged outside. The dust collected by the filter is accumulated in the bucket. This prevents the filter from collecting dust again, reduces the amount of dust collected per filter medium, and extends the life of the filter. In addition, a rectifying plate and a filter can be provided in a single dust collection chamber, and the dust collector can be downsized.

  According to the present invention, it is possible to prevent the dust collected and accumulated from re-scattering, and to reduce the size of the dust collector while having an appropriate rectifying effect of the dust-containing air. Effects can be obtained.

It is a perspective view which shows the inside of the dust collector which concerns on the 1st Embodiment of this invention. It is a side view which shows the inside of the dust collector which concerns on the 1st Embodiment of this invention. It is a rear view which shows the inside of the dust collector which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the state which removed the edge part attachment / detachment rectifier plate and center attachment / detachment rectifier plate of the dust collector which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the filter of the dust collector which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the baffle plate of the dust collector which concerns on the 2nd Embodiment of this invention. The sliding operation | movement of the center slide baffle plate of the dust collector which concerns on the 2nd Embodiment of this invention is shown typically, (a) is a side view before sliding operation, (b) is after sliding operation. It is a side view.

  Embodiments of a dust collector according to the present invention will be described below with reference to the accompanying drawings. This embodiment is a preferred specific example of the present invention, and may have various technically preferable limitations. However, the technical scope of the present invention is not particularly limited unless otherwise specified. However, the present invention is not limited to these embodiments. In the following description, for the sake of convenience, the directions indicated by the arrows in FIG. 1 are used as a reference, and the front and rear, left and right, and up and down directions are set as indicated by the arrows in each drawing.

  Hereinafter, the dust collector 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. Here, FIG. 1 is a perspective view showing the inside of the dust collecting apparatus 1 according to the first embodiment, FIG. 2 is a side view, and FIG. 3 is a rear view. FIG. 4 is a perspective view showing a state where the end attaching / detaching rectifying plate 41 and the central attaching / detaching rectifying plate 43 of the dust collecting apparatus 1 according to the first embodiment are removed.

  As shown in FIG. 1 to FIG. 3, the dust collector 1 is a so-called pulse jet type dust collector, and is disposed on the upper side of the dust collector body 2 having a substantially rectangular parallelepiped shape that is long in the vertical direction. And an exhaust portion 3 having a substantially rectangular parallelepiped shape that is flat on the top and bottom.

  The dust collection main body 2 is covered with a main body case 10 at the four outer sides thereof, and the inside of the dust collection main body 2 is separated by a partition plate 11 so that the dust collection chamber 12 and the clean chamber 13 are adjacent to each other. It is partitioned. Specifically, a dust collection chamber 12 is formed behind the partition plate 11, and a clean chamber 13 is formed ahead of the partition plate 11. In addition, the front surface of the main body case 10 is an opening / closing door 10a attached to be freely opened and closed via a hinge portion (not shown). 1 and 2, the main body case 10 is not shown, and in FIG. 3, the rear side wall of the main body case 10 is not shown.

  The partition plate 11 includes a vertical partition plate 15 erected on the base portion 14 of the dust collection main body 2, an inclined partition plate 16 that tilts upward from the upper end of the vertical partition plate 15, and the inclined partition plate 16. And a horizontal partition plate 17 to which the upper end of each is connected.

  The vertical partition plate 15 is a flat plate-like member that has the same width in the left-right direction as the dust collection main body 2 (base portion 14) and stands upright from the front side position in the front-rear direction center of the base portion 14. The vertical partition plate 15 is formed with four openings 20 (2 rows and 2 columns) that allow the dust collection chamber 12 and the clean chamber 13 to communicate with each other (see FIG. 1). Each opening 20 is formed in a rectangular shape that is long in the vertical direction.

  In addition, a flat opening / closing plate 21 is attached to the front side of each opening 20 so as to be pivotable forward about a pair of upper and lower hinges 22 provided at the left end. At the left end portion of each opening / closing plate 21, a locked portion (not shown) that is locked to a locking portion (not shown) provided on the left edge of each opening 20 is provided. In addition, a slit opening 23 elongated in the vertical direction is formed at the center of each opening / closing plate 21 (see FIG. 1).

  The inclined partition plate 16 is a flat plate-shaped member having the same left-right width as the vertical partition plate 15. The inclined partition plate 16 has its lower end connected to the upper end of the vertical partition plate 15 and extends upward with an inclination of about 45 degrees rearward. An inspection door 24 for performing maintenance (cleaning etc.) in the dust collecting chamber 12 is detachably attached to the inclined partition plate 16.

  The horizontal partition plate 17 is a flat plate-shaped member having the same left-right width as the vertical partition plate 15. The horizontal partition plate 17 is provided substantially horizontally at the upper end of the main body case 10 so as to constitute the top surface of the dust collection chamber 12. Precisely, the horizontal partition plate 17 is attached to the inner peripheral surface of the lower end portion of the exhaust case 64 (described later). The upper end portion of the above-described inclined partition plate 16 is connected to the rear side slightly from the center in the front-rear direction of the horizontal partition plate 17. Further, although not necessarily clear from FIGS. 2 and 3, the horizontal partition plate 17 is formed with a circular scroll opening 25 in front of the connecting portion with the inclined partition plate 16.

  As shown in FIGS. 1 to 4, the dust collection chamber 12 is a substantially rectangular parallelepiped space long in the vertical direction surrounded by the partition plate 11 and the main body case 10 in the rear side of the dust collection main body 2. is there. In the dust collection chamber 12, a pair of left and right suction ports 30 provided at the upper rear of the dust collection main body 2, three rectifying plates 31 provided at predetermined intervals along the left and right direction, and below each rectifying plate 31 Are provided with four filters 32, a support frame 33 for attaching each filter 32, and a bucket 34 disposed under the dust collection main body 2.

  As shown well in FIG. 2, each suction port 30 has a circular shape at the center of a substantially square flat plate-shaped opening frame 35 attached so as to be suspended downward from the left and right ends of the horizontal partition plate 17. A suction opening 36 is formed to penetrate therethrough. A duct 37 is connected to each suction opening 36, and dust-containing air generated outside the dust collector 1 passes through the duct 37 and is sucked into the dust collection chamber 12 through the suction port 30. In addition, although illustration is abbreviate | omitted, the opening for exposing each suction inlet 30 to the exterior is formed in the position corresponding to each suction inlet 30 in the right-and-left both sides wall of the main body case 10. FIG.

  As shown in FIGS. 3 and 4, each rectifying plate 31 is arranged so as to be symmetrical in the vicinity of the pair of left and right suction ports 30 and the center in the left-right direction. Each rectifying plate 31 has a predetermined upper space between the pair of left and right suction ports 30 and surrounded by the inclined partition plate 16, the horizontal partition plate 17, and the rear side wall of the main body case 10. It is provided to partition in the left-right direction at intervals. Hereinafter, for convenience of explanation, a pair of left and right rectifying plates 31 disposed in the vicinity of each suction port 30 is referred to as an “end rectifying plate 38”, and the rectifying plates disposed substantially in the center in the left-right direction. 31 is referred to as a “central rectifying plate 39”.

  Each end rectifying plate 38 is composed of an end main body rectifying plate 40 that forms a main appearance, and an end detachable rectifying plate 41 that is detachably attached to the end main body rectifying plate 40.

  Each end body rectifying plate 40 is made of a metal plate having a thickness of 1 to 2 mm, and the end body rectifying plate 40 is formed with a plurality of substantially square rectifying holes 40a in a lattice shape. In addition, the end body rectifying plate 40 has an inclined portion 40b inclined downward from the upper end toward the suction port 30 side in the front view, and an extension that is bent at the lower end of the inclined portion 40b and extends vertically downward. And the portion 40c.

  The inclined portion 40b is formed so as to form a trapezoidal appearance in which the front upper side is inclined along the inclined partition plate 16 in a side view. The inclined portion 40b is formed so that the angle from the horizontal plane is 60 ° (an angle of 150 ° formed by the inclined portion 40b and the extending portion 40c) when viewed from the front, and the lower end of the inclined portion 40b is the suction port 30. It is located near the lower end of the (opening frame 35).

  Further, as shown well in FIG. 4, the inclined portion 40 b is attached to the inclined portion 40 b at a position facing the suction port 30 (duct 37) in a rectangular shape with substantially the same size as the opening frame 35 of the suction port 30. An opening 40d is formed. A bent portion 40e that is bent horizontally is formed at the upper end portion of the inclined portion 40b.

  The extension part 40c is formed in a rectangular shape in a side view, bends in the vicinity of the lower end position of the suction port 30 (opening frame 35), and the lower end of the extension part 40c extends downward from the opening frame 35. .

  The inclined portion 40 b has an upper end surface connected to the lower surface of the horizontal partition plate 17, a front end surface connected to the back surface of the inclined partition plate 16, and a rear end surface connected to the front surface of the rear side wall of the main body case 10. Similarly, the extension part 40 c has a front end face connected to the back face of the vertical partition plate 15 and a rear end face connected to the front face of the rear side wall of the main body case 10. Thereby, each end part main body current plate 40 is fixed to the upper space of the dust collection main body part 2. In addition, the lower end of each extension part 40c is not connected anywhere.

  Each end attaching / detaching rectifying plate 41 is made of a metal flat plate having a thickness of 1 to 2 mm, and is formed in a rectangular shape that is slightly larger than the mounting opening 40d opened in the inclined portion 40b. In addition, each end detachable rectifying plate 41 is formed with a plurality of detachable rectifying holes 41 a formed in the same shape as the rectifying holes 40 a of the end body rectifying plate 40 in a lattice shape. Each end attaching / detaching rectifying plate 41 has a bent portion 41b bent horizontally at the upper end portion thereof. Each end attaching / detaching rectifying plate 41 is attached so that the bent portion 41b is placed on the bent portion 40e of the inclined portion 40b so as to close the mounting opening 40d of the inclined portion 40b from the suction port 30 side. The portion 41b is fixed by fixing means such as screwing.

  Next, as well shown in FIG. 4, the central rectifying plate 39 includes a central main body rectifying plate 42 that forms a main appearance, and a central detachable rectifying plate 43 that is detachably attached to the central main body rectifying plate 42. , Is composed of.

  The central main body rectifying plate 42 is made of a metal flat plate having a thickness of 1 to 2 mm. Like the end main body rectifying plate 40, the central main body rectifying plate 42 has a plurality of substantially square rectifying holes 42a in a lattice shape. Is formed. The central main body rectifying plate 42 is formed so as to form a pentagonal overview in which the front upper side is inclined along the inclined partition plate 16 in a side view. Further, the central main body rectifying plate 42 extends vertically downward from the horizontal partition plate 17 in a front view.

  Further, the central body rectifying plate 42 is formed with a rectangular attachment opening 42b having substantially the same size as the opening frame 35 of the suction port 30 at the same position as the attachment opening 40d of the end body rectifying plate 40. Has been. In addition, a bent portion 42 c that is bent horizontally is formed at the upper end portion of the central body rectifying plate 42.

  The central main body rectifying plate 42 has an upper end surface connected to the lower surface of the horizontal partition plate 17, a front end surface connected to the back surfaces of the inclined partition plate 16 and the vertical partition plate 15, and a rear end surface connected to the rear side wall of the main body case 10. Connected to the front. Thereby, the central body rectifying plate 42 is fixed in the upper space of the dust collecting body 2. Note that the lower end of the central rectifying plate 39 is not connected anywhere, is lower than the lower end of the suction port 30 (opening frame 35), and the extended portion 40c of each end body rectifying plate 40 described above. It is located above the lower end.

  The central attachment / detachment rectifying plate 43 is made of a metal plate having a thickness of 1 to 2 mm, and is formed in a rectangular shape that is slightly larger than the attachment opening 42b opened in the central body rectifying plate 42. The central attachment / detachment rectifying plate 43 is formed with a plurality of attachment / detachment rectifying holes 43a formed in the same shape as the rectifying holes 42a of the central body rectifying plate 42 in a lattice shape. The central attachment / detachment rectifying plate 43 is formed with a bent portion 43b bent horizontally at the upper end portion thereof. The central attaching / detaching rectifying plate 43 is attached so as to close the attachment opening 42b from the left side, for example, so that the bending portion 43b is placed on the bending portion 42c of the central body rectifying plate 42, and the bending portion 43b is screwed. It is fixed by fixing means such as.

  In addition, each rectification | straightening hole 40a, 41a, 42a, 43a can be made into arbitrary shapes and arrangement | positioning. For example, each of the rectifying holes 40a, 41a, 42a, 43a may be formed in a round hole shape or arranged in a staggered shape. Note that each end attaching / detaching rectifying plate 41 and the central attaching / detaching rectifying plate 43 are attached / detached by removing the horizontal partition plate 17, but an inspection port is provided on the rear side wall of the inclined partition plate 16 or the body case 10, and each end is attached. The part attaching / detaching rectifying plate 41 and the central attaching / detaching rectifying plate 43 may be attached / detached.

  By the way, the opening ratio which is the ratio of the area of each rectifying hole 40a, 42a (41a, 43a) with respect to the area in a side view is respectively defined in the end rectifying plate 38 and the central rectifying plate 39. In the first embodiment, the opening ratio of each end rectifying plate 38 is set to 50%, and the opening ratio of the central rectifying plate 39 is set to 40%. That is, the opening ratio of each end rectifying plate 38 is 20% or more larger than the opening ratio of the central rectifying plate 39. Each aperture ratio is not limited to the above, and the aperture ratio of the end rectifying plate 38 is set larger than the aperture ratio of the central rectifying plate 39 in a range of 20% to 30%. That's fine.

  Next, each filter 32 will be described with reference to FIG. FIG. 5 is a perspective view showing the filter 32 of the dust collector 1 according to the first embodiment.

  Each filter 32 includes a filter frame 44 having a substantially rectangular parallelepiped shape that is long in the front and rear directions and flat in the left and right, and a pair of left and right filter media 45 attached to the filter frame 44.

  The filter frame 44 includes an upper plate portion 44a, a lower plate portion 44b, a rear plate portion 44c connecting the rear end portions of the pair of upper and lower plate portions 44a and 44b, and the front ends of the pair of upper and lower plate portions 44a and 44b. And a flange portion 44d for connecting the portions.

  The upper plate portion 44a and the lower plate portion 44b are each formed in a rectangular flat plate shape made of resin. Upper notch portions 46 are formed in the left and right end portions of the upper plate portion 44a so as to be lowered by one step in the front-rear direction. Similarly, lower notch portions 47 that are raised by one step in the front-rear direction are formed at the left and right end portions of the lower plate portion 44b. The rear plate portion 44c has a rectangular plate shape made of resin, and is formed with the same left-right width as the plate portions 44a and 44b.

  The flange portion 44d is made of resin and is formed in a rectangular frame shape that is slightly larger than the rear plate portion 44c. In addition, although illustration is abbreviate | omitted, the annular packing is adhere | attached and fixed to the rear-end surface (back surface) of the flange part 44d.

  Each filter medium 45 is formed in a pleated shape in which a fold line extends in the vertical direction by continuously repeating a mountain fold and a valley fold in a front-rear direction using a material such as a rectangular nonwoven fabric in a side view.

  The pair of filter media 45 are supported by the filter frame 44 in a state of being opposed to each other in a standing posture with the gap S therebetween. Specifically, the pair of filter media 45 is sandwiched between an upper plate portion 44 a that is in contact with the upper end surface of each filter media 45 and a lower plate portion 44 b that is in contact with the lower end surface of each filter media 45. Further, the rear end surface of each filter medium 45 is closed by the rear plate portion 44c.

  Further, the front end surfaces of the filter media 45 are exposed in the frame of the flange portion 44d fixed to the front end portions of the pair of upper and lower plate portions 44a and 44b. Accordingly, the gap S between the pair of left and right filter media 45 is also opened in the frame of the flange portion 44d. The front end portion of the gap S in the frame of the flange portion 44d constitutes an exhaust opening 48 for discharging clean air after the dust is filtered from the dust-containing air by the filter media 45.

  The four filters 32 described above are inserted into the openings 20 in 2 rows and 2 columns formed in the vertical partition plate 15 and arranged in a grid pattern (2 rows and 2 columns). The dust collection chamber 12 is provided with a support frame 33 for supporting each filter 32 inserted from each opening 20.

  As shown well in FIG. 3, the support frame 33 includes a pair of left and right upper end frames 33 a that support the upper surfaces of the pair of left and right filters 32 disposed in the upper stage, and a pair of left and right filters 32 disposed in the upper stage. It is composed of four intermediate frames 33b that support the upper part of the pair of left and right filters 32 arranged on the lower surface and the lower stage, and four lower end frames 33c that support the lower part of the pair of left and right filters 32 arranged on the lower stage. ing.

  Each upper end frame 33a is formed in a substantially flat plate shape, its front end is connected to the upper end edge of each upper opening 20, and the rear end extending horizontally rearward is the rear side wall of the body case 10. Connected to. Each upper end frame 33 a covers the upper part of the filter 32 and prevents dust from entering and accumulating in the filter 32. On the lower surface of each upper end frame 33a, a pair of left and right upper end rail portions 50 projecting downward in the front-rear direction are formed at both left and right end portions.

  Each intermediate frame 33b is substantially L-shaped in a front view by an intermediate rail portion 51a that forms a substantially horizontal surface, and an intermediate extension portion 51b that is bent from one end portion of the intermediate rail portion 51a and extends downward. It is formed in a shape.

  Each intermediate rail portion 51 a is provided substantially horizontally from the left and right ends of the lower end edge of each upper opening 20 to the rear side wall of the main body case 10.

  Each intermediate extension 51b is provided along the left and right end edges at the top of each lower opening 20. Each intermediate extension 51b has a front end connected between each upper opening 20 and each lower opening 20, and a rear end horizontally extending rearward is connected to the rear of the body case 10. Connected to the side wall.

  Each lower end frame 33c is substantially L-shaped in a front view by a lower end rail portion 52a that forms a substantially horizontal surface and a lower end extension portion 52b that is bent from one end portion of the lower end rail portion 52a and extends downward. It is formed in a shape.

  Each lower end rail portion 52 a is provided substantially horizontally from the left and right ends of the lower end edge portion of each lower opening 20 to the rear side wall of the main body case 10.

  Each lower end extension part 52b is provided along the downward extension line of the right-and-left side end of each lower opening 20. In addition, the downward extension length of each lower end extension part 52b is substantially the same as the left and right width of the lower end rail part 52a. Each intermediate extension 51b has a front end connected to the lower left and right corners of each lower opening 20, and a rear end extending horizontally rearward is connected to the rear side wall of the body case 10. Connected.

  A procedure for attaching each filter 32 described above to the dust collection chamber 12 will be described. Each filter 32 is inserted from the front (clean chamber 13) toward the rear (dust collection chamber 12) with respect to each opening 20 formed in the vertical partition plate 15.

  For example, when attaching the filter 32 to the opening 20 on the upper left side of the vertical partition plate 15, the user opens the opening / closing plate 21 and exposes the opening 20. The filter 32 is inserted into the opening 20 from the rear end. At this time, the user aligns each upper notch 46 of the upper plate portion 44a of the filter 32 with each upper rail portion 50 of the upper frame 33a, and each lower notch of the lower plate portion 44b of the filter 32. The strip 47 is aligned with each intermediate rail 51a of the intermediate frame 33b.

  Then, the user pushes the filter 32 from the front to the rear along each upper rail portion 50 and each intermediate rail portion 51a. At this time, the upper notch portions 46 of the upper plate portion 44a of the filter 32 are in sliding contact with the upper end rail portions 50, and the lower notch portions 47 of the lower plate portion 44b of the filter 32 are intermediate rails. It is in sliding contact with the portion 51a. That is, the filter 32 moves backward while being guided by the upper end rail portions 50 and the intermediate rail portions 51a. The rear end surface of the flange portion 44d of the filter 32 comes into contact with the front peripheral edge portion (vertical partition plate 15) of the opening portion 20, whereby the push-in of the filter is stopped. As a result, the filter 32 is supported by the upper end frame 33a and the intermediate frame 33b.

  Next, the user closes the opening / closing plate 21 provided in the opening 20 and locks the locked portion of the opening / closing plate 21 to the locking portion. Thereby, the packing fixed to the rear end surface (back surface) of the flange portion 44d is in close contact with the front peripheral edge portion (vertical partition plate 15) of the opening 20, and the dust-containing air on the dust collection chamber 12 side is clean side 13 side. It is designed not to leak. In this state, the exhaust opening 48 of the filter 32 is opened to the clean chamber 13 side through the slit opening 23 of the opening / closing plate 21.

  For example, when the filter 32 is attached to the opening 20 on the lower left side of the vertical partition plate 15, the user inserts the filter 32 into the opening 20 that is opened and exposed by the opening / closing plate 21. At this time, the user inserts both the left and right side surfaces of the upper plate portion 44a of the filter 32 between the pair of left and right intermediate extension portions 51b of the intermediate frame 33b, and each lower side of the lower plate portion 44b of the filter 32. The notch strips 47 are aligned with the lower end rail portions 52a of the lower end frame 33c.

  Then, the user pushes the filter 32 from the front to the rear along the intermediate extension portions 51b and the lower end rail portions 52a. At this time, the left and right side surfaces of the upper plate portion 44a of the filter 32 are in sliding contact with the intermediate extension portions 51b, and the lower notch portions 47 of the lower plate portion 44b of the filter 32 are connected to the lower end rail portion 52a. It is in sliding contact. That is, the filter 32 is guided by the intermediate extension portions 51b and the lower end rail portions 52a and moves rearward. The packing fixed to the rear end surface (rear surface) of the flange portion 44d of the filter 32 comes into contact with the front peripheral edge portion (vertical partition plate 15) of the opening portion 20, whereby the push-in of the filter is stopped. As a result, the filter 32 is supported by the intermediate frame 33b and the lower end frame 33c.

  Next, the user closes / locks the opening / closing plate 21 so that the packing on the rear end surface (back surface) of the flange portion 44 d is brought into close contact with the front peripheral edge portion of the opening 20.

  The filter 32 is attached to all the openings 20 formed in the vertical partition plate 15 by the above procedure. When the four filters 32 are attached in the dust collection chamber 12, a plurality of dust-containing air flow paths 53 are provided in the dust collection chamber 12 from the upper end of each upper end frame 33 a to the base portion 14 in the vertical direction. Is formed.

  Specifically, as shown in FIG. 3, the plurality of flow paths 53 include a pair of upper and lower filters 32 (hereinafter referred to as “left filter pair L”) attached to the left side wall of the main body case 10 and the opening 20 on the left upper and lower stages. And a pair of upper and lower filters 32 (hereinafter referred to as “right filter pair R”) attached to the left filter pair L and the right upper and lower openings 20. )) And a third flow path 56 formed between the right filter pair R and the right side wall of the main body case 10. Needless to say, the flow paths 54 to 56 are closed at the front by the vertical partition plate 15 and at the rear by the rear side wall of the main body case 10.

  In the first flow path 54, the filter medium 45 on the left side of each filter 32 constituting the left filter pair L faces. That is, the first flow path 54 is formed downward along the filtration surface on the left side of the filter 32.

  An extension 40c of the left end rectifying plate 38 extends above the first flow path 54, and the upper part of the first flow path 54 is divided into the first division by the extension 40c. It is partitioned into a channel 57a and a second divided channel 57b. Specifically, the extension 40 c of the end rectifying plate 38 equally divides the width of the upper part of the first flow path 54 in the left-right direction into two. That is, the first divided flow path 57a formed on the left side wall side of the main body case 10 and the second divided flow path 57b formed on the left filter pair L side are formed to have the same left-right width. Has been.

  Further, the lower end of the extending portion 40 c of the end rectifying plate 38 is provided so as to extend downward from the upper end of the filter medium 45 (filter surface) of the upper filter 32.

  In the second flow path 55, a filter medium 45 on the right side of each filter 32 constituting the left filter pair L and a filter medium 45 on the left side of each filter 32 constituting the right filter pair R face each other. That is, the 2nd flow path 55 is formed toward the downward direction so that each filtration surface of the filter 32 arrange | positioned at right and left may be followed. In addition, since the filter medium 45 faces the 2nd flow path 55 on both right and left sides, it can collect more dust. For this reason, the width in the left-right direction of the second channel 55 is formed to be approximately twice the width (size) of the first channel 54.

  A lower end portion of the central rectifying plate 39 extends above the second flow passage 55, and the lower end portion of the central rectifying plate 39 causes the upper portion of the second flow passage 55 to be the third divided flow passage. It is partitioned into 57c and a fourth divided flow path 57d. Specifically, the lower end portion of the central rectifying plate 39 equally divides the width of the upper portion of the second flow channel 55 in the left-right direction into two. That is, the third divided flow path 57c formed on the left filter pair L side and the fourth divided flow path 57d formed on the right filter pair R side are formed to have the same left-right width. Yes.

  In addition, the lower end part of the center baffle plate 39 is located above the upper end of the filter medium 45 (filtration surface) of the filter 32 of the upper stage.

  The filter medium 45 on the right side of each filter 32 constituting the right filter pair R faces the third flow path 56. That is, the third flow channel 54 is formed downward along the filtration surface on the right side of the filter 32. Note that the third flow path 56 is formed to have substantially the same width in the left-right direction as the first flow path 54.

  Similar to the first flow channel 54, an extension 40c of the right end rectifying plate 38 extends above the third flow channel 56. The extension 40c allows the third flow The left and right widths at the top of the path 56 are evenly partitioned. That is, the fifth divided flow path 57e formed on the right filter pair R side and the sixth divided flow path 57f formed on the right side wall side of the main body case 10 are formed to have the same left-right width. ing.

  In addition, the upper part of each flow path 54,55,56 should just partition the width | variety of the direction orthogonal to the distribution direction of dust-containing air, for example, you may make it partition equally the width | variety of the front-back direction. .

  A flat shielding plate 18 is provided on the upper surface of each upper end frame 33a. The shielding plate 18 has its front end face connected slightly downward from the upper end of the vertical partition plate 15 and extends horizontally rearward, and closes the upper front side of each of the divided flow paths 57a to 57f. The shielding plate 18 is configured to be detachable during maintenance.

  Next, as shown in FIGS. 1 to 3, the bucket 34 is provided below the base portion 14 of the dust collection main body portion 2. The bucket 34 is formed in a tray shape with an upper opening, and has an inclined surface portion 34a whose front lower portion is chamfered in a side view. Above the bucket 34, a dust introduction plate 58 is provided so as to be inclined downward from the left and right side walls and the rear side wall of the main body case 10. The lower end of each dust introduction plate 58 faces the upper part in the bucket 34.

  An annular packing (not shown) is bonded and fixed to the upper end surface of the bucket 34. A locking mechanism 59 is attached to the inclined surface portion 34 a of the bucket 34, and the packing of the bucket 34 is brought into close contact with the lower surface of the base portion 14 by locking the locking mechanism 59. Further, by releasing the lock mechanism 59, the bucket 34 and the lower opening / closing door 34b provided in front of the bucket 34 can be pulled out forward.

  Next, the clean room 13 will be described with reference to FIGS. 1 to 3. The clean chamber 13 is a substantially rectangular parallelepiped space that is long in the vertical direction and is surrounded by the partition plate 11, the main body case 10, and the base portion 14 in front of the dust collection main body 2. The upper part of the clean chamber 13 is formed so as to spread in the front-rear direction upward along the above-described inclined partition plate 16. The horizontal partition plate 17 constituting the top surface of the clean chamber 13 is formed with the circular scroll opening 25 described above.

  Further, the clean room 13 is provided with a dust removing device 60 for removing dust adhering to each filter 32 by a pulse jet.

  The dust removing device 60 includes a header tank 61 for storing compressed air, a pair of left and right blow tubes 62 connected to the header tank 61, and a pair of electromagnetic waves for controlling the supply of compressed air to each blow tube 62. And a valve 63.

  The header tank 61 is attached to the lower surface of the horizontal partition plate 17 at the front portion of the clean chamber 13. The header tank 61 is connected to a pressurized air source (not shown) via a pipe (not shown), and stores compressed air supplied from the pressurized air source.

  Each blow tube 62 is opposed to the exhaust opening 48 of each of the left filter pair L and the right filter pair R substantially in the center in the front-rear direction of the clean chamber 13 and is parallel to the vertical partition plate 15 in the vertical direction. It is extended to. Each blow tube 62 is a long cylindrical body made of metal (may be made of resin), and an upper end thereof is connected to the header tank 61 via an electromagnetic valve 63. Moreover, the lower end part of each blow tube 62 is obstruct | occluded, and is attached with respect to the attaching part 62a fixed on the base part 14. FIG. Each blow tube 62 may be attached to the inside of the open / close door 10a.

  Each blow tube 62 has a plurality of injection holes (not shown) for injecting compressed air supplied from the header tank 61 and pressure-adjusted by the electromagnetic valve 63. Each injection hole is formed at a position facing the exhaust opening 48 of each of the left filter pair L and the right filter pair R.

  Next, the exhaust part 3 has four outer surfaces covered with an exhaust case 64, a scroll 65 that generates a suction force for sucking dust-containing air, and a control device 66 that controls the dust collector 1. And have. In addition, an exhaust port 67 is formed at the rear of the upper surface of the exhaust case 64.

  The scroll 65 is a so-called centrifugal fan device, and incorporates an intake fan 68 that is rotationally driven by a motor (not shown). The scroll 65 is attached in a state in which the intake portion 65a is directed from the scroll opening 25 of the horizontal partition plate 17 toward the clean chamber 13 side. Further, an exhaust portion 65 b is formed from the right side surface of the scroll 65 to the rear side surface.

  The control device 66 is attached to the inside of the front side wall of the exhaust case 64 and exposes an operation panel 69 for direct operation by the user from the front surface of the exhaust case 64. The operation panel 69 is equipped with switches for instructing the start / stop of the dust collector 1 and the dust removal operation, a liquid crystal panel for displaying the operation status, and the like.

  Next, the dust collection operation of the dust collector 1 according to the first embodiment will be described with reference to FIGS. Here, in the normal dust collection operation, only one suction port 30 is used, and thus the unused suction port 30 is covered with a removable closing plate (not shown). Hereinafter, the dust collection operation in a case where the right suction port 30 is closed by the blocking plate and dust-containing air is sucked from the left suction port 30 will be described. In FIGS. 2, 3 and 5, the flows of dust-containing air and clean air are indicated by thick arrows.

  The user operates the operation panel 69 to instruct the operation of the dust collector 1. In accordance with an instruction from the user, the control device 66 starts operation of the dust collector 1. Specifically, the control device 66 controls the motor of the scroll 65 to drive the intake fan 68 to rotate. Due to the rotation of the intake fan 68, a suction force is generated from the left suction port 30 toward the dust collection chamber 12 and the clean chamber 13. Thereby, the dust-containing air from the dust generation source is sucked from the suction port 30 into the dust collecting chamber 12 through the duct 37.

  Since each end rectifying plate 38 and the central rectifying plate 39 are provided in the upper part of the dust collection chamber 12 so as to block the flow of the dust-containing air sucked from the suction port 30, first, The dust air collides with the left end rectifying plate 38. The flow of the dust-containing air flows upward along the left end rectifying plate 38, downward, and through the rectifying hole 40a (detachable rectifying hole 41a) of the end rectifying plate 38 to the right. Dispersed in the flow straight in the direction. Note that the dust-containing air traveling downward along the left end rectifying plate 38 flows into the first divided flow path 57a.

  Next, part of the dust-containing air that has passed through the left end rectifying plate 38 flows downward along the right surface of the end rectifying plate 38 and flows into the second divided flow path 57b.

  Further, most of the dust-containing air that has passed through the left end rectifying plate 38 collides with the central rectifying plate 39, and the flow of the dust-containing air flows downward along the central rectifying plate 39, Dispersed into the flow straight in the right direction through the rectifying hole 42a (detachable rectifying hole 43a) of the rectifying plate 39. Note that the dust-containing air traveling downward along the central rectifying plate 39 flows into the third divided flow path 57c.

  Next, part of the dust-containing air that has passed through the central rectifying plate 39 flows downward along the right surface of the central rectifying plate 39 and flows into the fourth divided flow path 57d.

  Further, most of the dust-containing air that has passed through the central rectifying plate 39 collides with the right end rectifying plate 38, and the flow of the dust-containing air flows upward along the right end rectifying plate 38. And a downward flow and a flow straight in the right direction through the rectifying hole 40a (detachable rectifying hole 41a) of the right end rectifying plate 38. Note that the dust-containing air traveling downward along the right end rectifying plate 38 flows into the fifth divided flow path 57e.

  And most of the dust-containing air that has passed through the right end rectifying plate 38 flows downward along the right end rectifying plate 38 and flows into the sixth divided flow path 57f. A blowing chamber R is formed between the right end rectifying plate 38 and the right side wall of the main body case 10, and passes through the right end rectifying plate 38. The dust-containing air that has flowed upward along the flow flows into the sixth divided flow path 57f via the blowing chamber R.

  Here, since the opening ratio of each end rectifying plate 38 is set larger than the opening ratio of the central rectifying plate 39, the air volume of the dust-containing air passing through the end rectifying plate 38 on the suction port 30 side increases. To do. Therefore, a large amount of dust-containing air also strikes the central rectifying plate 39 and the right end rectifying plate 38 that are separated from the suction port 30. And by such each baffle plate 31 (38, 39), the dust-containing air which flowed in from the suction port 30 on the left side has substantially the same air volume (flow rate) in the first flow path 54 and the third flow path 56. Thus, the second flow path 55 is dispersed so that the air flow (flow rate) is approximately twice that of the first flow path 54 and the third flow path 56 (dispersion action). Therefore, the flow speed of the dust-containing air at the upper part of each of the divided flow paths 57a to 57f can be controlled to be approximately constant speed (rectifying action). The reason why the air volume (flow rate) of the second flow path 55 is approximately twice that of the first flow path 54 is that, as described above, the second flow path 55 has filter media on both the left and right sides. 45 faces (the filter medium 45 is twice as large as the first flow path 54), and the left-right width is formed to be approximately double the left-right width of the first flow path 54 and the third flow path 56. It is. Thereby, regardless of the distance from the suction port 30, it is possible to exhibit a dispersion and rectification action without variation between the rectifying plates 38 and 39, and stable dust-containing air in the dust collecting chamber 12. The descending airflow can be generated.

  The descending airflow of the dust-containing air flowing into each of the divided flow paths 57a to 57f along the inclined partition plate 16 has a higher wind speed (flow velocity) than the position away from the inclined partition plate 16 but is inclined. Since the shielding plate 18 is provided below the partition plate 16 so as to block the divided flow paths 57a to 57f, the wind speed of the airflow descending along the inclined partition plate 16 is reduced to a desired wind speed. be able to. Thereby, the balance of the wind speed of the dust-containing air in each division | segmentation flow path 57a-57f can be equalize | homogenized, and the rolling-up of the dust accumulated in the bucket 34 can be suppressed.

  Since the suction force generated by the rotation of the intake fan 68 acts on the flow paths 54 to 56 via the exhaust opening 48 (gap S) of the filter 32 and the filter media 45, the rectifying plates 31 (38, 39). Due to the rectifying / dispersing action, the dust-containing air divided into the respective divided flow paths 57a to 57f becomes a downward airflow and flows downward of the dust collecting chamber 12.

  Specifically, the dust-containing air that has flowed into the first divided flow path 57a and the second divided flow path 57b merges in the first flow path 54 and flows downward. The dust-containing air that passes through the first flow path 54 is sucked into each filter medium 45 (filter surface) on the left side of the left filter pair L, and dust is collected. The clean air from which dust has been removed from the dust-containing air passes through the gaps S of the left filter pair L and is exhausted from the exhaust openings 48 at the front to the clean chamber 13.

  Similarly, the dust-containing air that has flowed into the third divided flow path 57c and the fourth divided flow path 57d merges in the second flow path 55 and flows downward. The dust-containing air that passes through the second flow path 55 is sucked into each filter medium 45 (filter surface) on the right side of the left filter pair L and each filter medium 45 (filter surface) on the left side of the right filter pair R. Is collected. The clean air from which dust has been removed from the dust-containing air passes through the gaps S of the left filter pair L and the right filter pair R, and is exhausted from the front exhaust openings 48 to the clean chamber 13.

  Similarly, the dust-containing air that has flowed into the fifth divided flow path 57e and the sixth divided flow path 57f merges in the third flow path 56 and flows downward. The dust-containing air passing through the third flow path 56 is sucked into the right filter medium 45 (filter surface) of the right filter pair R, and dust is collected. The clean air from which dust has been removed from the dust-containing air passes through the gaps S of the right filter pair R and is exhausted from the front exhaust openings 48 to the clean chamber 13.

  The dust is collected in each filter medium of each filter 32, but the dust dropped by the descending airflow is accumulated in the bucket 34.

The clean air exhausted from the exhaust openings 48 of the left filter pair L and the right filter pair R into the clean chamber 13 becomes an ascending current due to the suction force generated by the rotation of the intake fan 68.
The clean air is sucked into the scroll 65 from the intake portion 65a and exhausted from the exhaust portion 65b, and further rises in the exhaust case 64 and is exhausted from the exhaust port 67 to the outside of the dust collector 1.

  When the left suction port 30 is closed by the closing plate and the dust-containing air is sucked from the right suction port 30, the dust-containing air flows into the dust collection chamber 12 in the reverse order of the above description. Will do. In this case, the space between the left end rectifying plate 38 and the left side wall of the main body case 10 is the blowing chamber R.

  Next, the dust removal operation of each filter 32 by the dust remover 60 will be described. This dust removal operation is executed, for example, when a sensor or the like detects that the amount of clean air exhausted from the exhaust port 67 is less than a predetermined value, or during maintenance performed every elapse of a fixed period. Note that the dust removal operation may be executed at a desired timing based on a user operation.

  First, when the dust removal operation is started, the compressed air supplied from the pressurized air source via the pipe is accumulated in the header tank 61. And the control apparatus 66 introduces compressed air to each blow tube 62 by, for example, controlling opening and closing of each solenoid valve 63 at a constant time interval, and injects compressed air from each injection hole at a constant time interval (so-called so-called). Pulse jet injection). The pulse jet is ejected toward the exhaust opening 48 of each filter 32, so that dust attached to the pair of left and right filter media 45 of each filter 32 is removed. The control device 66 opens and closes the two electromagnetic valves 63 in order, and supplies compressed air to the two blow tubes 62 in order. For this reason, the jet of the pulse jet is sequentially performed on the left filter pair L and the right filter pair R.

  The dust that has been wiped off falls on the descending airflow and accumulates in the bucket 34 through the flow paths 54, 55, and 56. The dust falling through the flow paths 54 and 56 is appropriately guided into the bucket 34 by the dust introduction plates 58.

  The user periodically releases the lock mechanism 59, pulls out the bucket 34, and discards the dust accumulated in the bucket 34.

  According to the dust collector 1 which concerns on the above 1st Embodiment, the positional relationship of each suction inlet 30, each baffle plate 31, and the filter 32, the formation direction of each flow path 53, and each flow path 53 (54-). 56) The dust-containing air is appropriately guided to the flow paths 54 to 56 in the dust collection chamber 12 by the lower portions of the rectifying plates 31 extending upward, and the dust collection chamber 12 (each flow paths 54 to 56). A descending airflow is generated inside. For this reason, for example, re-scattering of dust accumulated in the bucket 34 provided in the lower part of the dust collecting chamber 12 can be prevented. Thereby, the re-collection of the dust to the filter 32 by re-scattering can be prevented, the lifetime reduction of the filter 32 can be suppressed, and the dust accumulated in the bucket 34 can be efficiently recovered.

  Moreover, since the air volume which passes each flow path 54-56 can be appropriately shunted by the dispersion | distribution / rectification | straightening effect | action of each rectifying plate 31, distribution of the dust-containing air which approachs from the side surface (filter medium 45) of each filter 32 is possible. Can be made uniform. Thereby, each filter 32 can be used effectively and dust collection performance improves. Each rectifying plate 31 and each filter 32 are both provided in a single dust collection chamber 12, and the lower part of each rectifying plate 31 (38, 39) extends to the upper part of each flow path 54-56. . For this reason, for example, the structure for partitioning the dust collection chamber 12 into the filter chamber and the rectification chamber can be omitted, and the vertical dimension of the dust collector 1 can be shortened. Thereby, size reduction of the dust collector 1 can be achieved.

  Moreover, according to the dust collector 1 which concerns on 1st Embodiment, since the left-right width | variety of the upper part of each flow path 54-56 is divided equally (divided), for example, the 1st flow path 54 The amount of air passing through each of the divided flow paths 57a and 57b in the upper part of each can be made uniform. In addition, the extending portion 40 c of each end rectifying plate 38 extends to a position facing the filter medium 45 that is the filtration surface of the filter 32 in the upper part of the first flow path 54 and the third flow path 56. The dust-containing air can be guided to the flow paths 54 and 56 more appropriately. As a result, a stable downflow of dust-containing air can be generated in the dust collection chamber 12, dust can be prevented from re-scattering and re-collecting, and a reduction in filter life can be suppressed.

  In the case where the present applicant arranges a pair of left and right end rectifying plates 38 inclined as in the first embodiment and a central rectifying plate 39 provided vertically at the center in the left-right direction (hereinafter, “ With respect to Experiment 1 ”), a comparative verification experiment of the pressure difference before and after passing through each of the rectifying plates 38 and 39 was performed. As a comparative example, when the end rectifying plate 38 and the central rectifying plate 39 are all vertical and arranged symmetrically, the pressure difference before and after passing through the rectifying plates 38 and 39 is measured. As a result, the pressure difference was smaller than that of the comparative example. That is, it was confirmed that the pressure loss of the dust-containing air by the respective rectifying plates 38 and 39 can be reduced by inclining the pair of left and right end rectifying plates 38 as in the first embodiment. Thereby, the driving force of the intake fan 68 of the scroll 65 for sucking dust-containing air can be reduced.

  From the above comparative verification experiment, according to the dust collector 1 according to the first embodiment, the end rectifying plate 38 on each suction port 30 side is inclined, so that the dispersion and rectification of each end rectifying plate 38 is performed. The effect can be exhibited appropriately. Moreover, it can reduce that dust adheres to the surface of each edge part baffle plate 38. FIG. Furthermore, since the suction port 30 is provided at the left and right opposing positions of the dust collection chamber 12, the duct 37 for introducing dust-containing air from the dust generation source can be easily routed. Further, since the rectifying plates are provided so as to be bilaterally symmetric with respect to the respective suction ports 30, the same rectifying effect can be exhibited regardless of which suction port 30 is connected with the duct 37.

  In addition, arrangement | positioning, a shape, and an aperture ratio of each baffle plate 31 (38, 39) of the dust collector 1 which concerns on 1st Embodiment were derived | led-out by the airflow analysis, and shall be set as such. Thus, the dust-containing air was dispersed and rectified, and only the downdraft was generated in the dust collecting chamber 12.

  In addition, in the comparative example described above or when the inclination of the pair of left and right end rectifying plates 38 is arranged in the opposite direction, the dust-containing air does not pass through the end rectifying plate 38 (the rectifying holes 40a and 41a thereof), It has been found that a downward airflow is generated along the end rectifying plate 38 and the dispersion / rectifying effect by the end rectifying plate 38 is weak.

  Moreover, according to the dust collector 1 which concerns on 1st Embodiment, since each filter 32 filters dust-containing air with a pair of filter media 45 opposingly arranged on either side, compared with the case where one filter media 45 is used. Thus, the amount of collected dust per filter medium 45 can be reduced. Thereby, the lifetime of each filter 32 can be extended. Moreover, since each filter 32 is arrange | positioned by the standing posture, and each filter medium 45 has comprised the pleat shape along the downward flow, without inhibiting the downward flow in each flow path 54-56. Dust can be collected efficiently.

  Note that the dust collected on each filter medium 45 is likely to accumulate below each filter medium 45 due to the generation of the downflow air and the dead weight of the dust. For this reason, the upper side of each filter medium 45 may not be used effectively. In that respect, since the filter 32 of the dust collector 1 according to the first embodiment is formed symmetrically vertically and horizontally, each filter 32 can be mounted upside down. Thereby, each filter medium 45 can be utilized effectively.

  In the dust collector 1 according to the first embodiment, a total of four filters 32 in 2 rows and 2 columns are attached. Depending on the physical properties of the dust-containing air to be sucked, the individual filters 32 are clogged. There may be differences in condition. In this case, the attachment position of each filter 32 can also be changed. That is, the filter 32 can be rotated.

  Moreover, according to the dust collector 1 which concerns on 1st Embodiment, since each edge part attachment / detachment rectification plate 41 and the center attachment / detachment rectification plate 43 are detachable, the maintenance (cleaning etc.) of the center part into which dust-containing air flows in ) Can be easily performed. For example, when dust is contained in dust, there is a risk of clogging due to entanglement with each of the detachable rectifying plates 41, 43. Therefore, it is particularly effective to make the detachable rectifying plates 41, 43 detachable. It is.

  Note that the opening ratios of the detachable rectifying plates 41 and 43 may be different from the opening ratios of the main body rectifying plates 40 and 42. In this case, several types of detachable rectifying plates 41 and 43 having different opening ratios are prepared (those having an opening ratio smaller than that of the main body rectifying plates 40 and 42), and dust-containing air having a desired air volume is in the dust collecting chamber 12. The detachable rectifying plates 41 and 43 are exchanged so as to flow into the.

  Note that ducts 37 may be connected to the pair of left and right suction ports 30 to suck dust-containing air from both the left and right sides.

  In the dust collector 1 according to the first embodiment described above, a total of four filters 32 in two rows and two columns are arranged in the dust collecting chamber 12, but the present invention is not limited to this. For example, a total of six filters 32 of 2 rows and 3 columns may be arranged in the dust collection chamber 12. That is, a total of six openings 20 in 2 rows and 3 columns are formed in the vertical partition plate 15, and upper and lower attached to the upper and lower openings 20 between the left filter pair L and the right filter pair R. A pair of filters 32 (hereinafter referred to as “intermediate filter pair C”) are arranged.

  In this case, the pair of left and right end rectifying plates 38 are arranged corresponding to the respective suction ports 30. Further, a central rectifying plate 39 is disposed between the left filter pair L and the intermediate filter pair C and between the intermediate filter pair C and the right filter pair R, respectively. That is, two central rectifying plates 39 are provided.

  The number of filters 32 is not limited to the above-described embodiments, and an arbitrary number of filters 32 can be arranged in a grid pattern. In this case, each time the filter row is increased by one, one central rectifying plate 39 interposed between the filter rows is added.

<Second Embodiment>
Next, with reference to FIG. 6 and FIG. 7, the dust collector 1 which concerns on the 2nd Embodiment of this invention is demonstrated. FIG. 6 is a perspective view showing a rectifying plate 31 of the dust collector 1 according to the second embodiment. FIG. 7 schematically shows a sliding operation of the central slide baffle plate 71 of the dust collector 1 according to the second embodiment, (a) is a side view before the sliding operation, and (b) is a slide. It is a side view after operation | movement. In addition, about the structure similar to the dust collector 1 which concerns on 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 6, in the dust collector 1 according to the second embodiment, the end slide rectifying plate 70 and the central slide rectifying plate 71 are slidable with respect to the end main body rectifying plate 40 and the central main body rectifying plate 42. Is attached.

  Specifically, each end rectifying plate 38 includes an end main body rectifying plate 40 and an end slide rectifying plate 70 that is slidably stacked on the end main body rectifying plate 40 from the suction port 30 side. ing.

  Each end body rectifying plate 40 is the same as that according to the first embodiment described above, but the mounting opening 40d formed in the inclined portion 40b is omitted. That is, a plurality of rectifying holes 40a are formed in a lattice shape on the entire surface of the inclined portion 40b. In addition, a rectangular plate-shaped projecting portion 72 is provided to extend forward at the lower front end of each inclined portion 40b. A positioning pin 73 projects from the tip of the projecting portion 72 toward the side where the end slide rectifying plate 70 is overlapped.

  Each end slide rectifying plate 70 has substantially the same configuration as the end body rectifying plate 40, and a plurality of slide rectifying holes 70a formed in the same shape at the same positions as the respective rectifying holes 40a are formed in a lattice shape. ing. As a configuration different from the end body rectifying plate 40, each end slide rectifying plate 70 is formed slightly shorter in the front-rear direction than the end body rectifying plate 40, and at the tip of the projecting portion 74, An elongated slide hole 75 is opened in the front-rear direction. The length in the front-rear direction of the slide hole 75 corresponds to the difference in the length in the front-rear direction between the end body rectifying plate 40 and the end slide rectifying plate 70. A bent portion 70 b that is bent horizontally is formed at the upper end portion of each end slide rectifying plate 70. By placing the bent portion 70 b on the bent portion 40 e of the end body rectifying plate 40 and inserting the positioning pin 73 into the slide hole 75, the end slide rectifying plate 70 is moved back and forth with respect to the end body rectifying plate 40. It is in a state of being slidably stacked in the direction.

  Similarly to each end rectifying plate 38, each central rectifying plate 39 includes a central main body rectifying plate 42, a central slide rectifying plate 71 slidably stacked on the central main body rectifying plate 42 from the suction port 30 side, It is composed of

  The central body rectifying plate 42 is the same as that according to the first embodiment described above, but the mounting opening 40d is omitted. A protruding portion 76 extends forward at the lower front end of each central body rectifying plate 42, and a positioning pin 77 protrudes toward the side where the central slide rectifying plate 71 is overlapped at the tip of the protruding portion 76. ing.

  The central slide rectifying plate 71 has substantially the same configuration as the central main body rectifying plate 42, and a plurality of slide rectifying holes 71a formed in the same shape at the same position as the rectifying holes 42a are formed in a lattice shape. Similarly to the above-described end slide rectifying plate 70, the central slide rectifying plate 71 is formed slightly shorter in the front-rear direction than the central main body rectifying plate 42, and a slide hole 79 (see FIG. 7), and a bent portion 71b is formed at the upper end portion of the central slide rectifying plate 71. By placing the bent portion 71b on the bent portion 42c of the central body rectifying plate 42 and inserting the positioning pin 77 into the slide hole 79, the central slide rectifying plate 71 slides in the front-rear direction with respect to the central body rectifying plate 42. It is in a state where it can be moved freely.

  Moreover, the through-opening 80 is formed in the inclined partition plate 16 in the position corresponding to each protrusion part 72,74,76,78 (3 in 2nd Embodiment). The projecting portions 72, 74, 76, 78 in the state where the main body rectifying plates 40, 42 and the slide rectifying plates 70, 71 overlap each other pass through the through openings 80. In addition, between each through opening 80 and each protrusion part 72,74,76,78, it is sealed so that dust-containing air may not leak to the clean chamber 13 side.

  Next, referring to FIG. 7, the sliding operation of the slide rectifying plates 70 and 71 will be described. Here, the sliding operation of the central slide rectifying plate 71 with respect to the central main body rectifying plate 42 will be described.

  The central body rectifying plate 42 and the central slide rectifying plate 71 are in a state in which the respective rectifying holes 42a and the respective slide rectifying holes 71a are aligned with the rear end surfaces thereof being aligned (see (a) in FIG. 7). ). At this time, the positioning pin 77 is located at the front end of the slide hole 79.

  When the user opens the inspection door 24, grasps the protruding portion 78 and pulls the central slide rectifying plate 71 forward, the central slide rectifying plate 71 slides forward with respect to the central main body rectifying plate 42. Then, the frame-like portion of each slide rectification hole 71a overlaps with each rectification hole 42a, and each rectification hole 42a becomes narrow in the front-rear direction (see (b) shown in FIG. 7). Thereby, the aperture ratio of the central baffle plate 39 can be changed (smaller). At this time, the positioning pin 77 is located at the rear end of the slide hole 79.

  The sliding operation of the end slide rectifying plate 70 with respect to the end main body rectifying plate 40 is also the same as described above, and the description thereof is omitted.

  According to the dust collector 1 which concerns on the above 2nd Embodiment, the several baffle plates 31 (38, 39) are arrange | positioned in the left-right direction, and the dust containing air which flowed in from the suction inlet 30 can be equally distributed. Even if there is a possibility of difficulty, by sliding the slide rectifying plates 70 and 71 with respect to the main body rectifying plates 40 and 42, the opening area of the respective rectifying holes 42a (respective rectifying plates 38 and 39). Can be changed. Thereby, the air volume of the dust-containing air which flows into each flow path 54-56 can be adjusted.

  The size (opening ratio) of the rectifying holes 40a and 42a of the main body rectifying plates 40 and 42 and the slide rectifying holes 70a and 71a of the slide rectifying plates 70 and 71 may be different.

  INDUSTRIAL APPLICABILITY The present invention can be used for a dust collector or the like that sucks dust generated from a processing machine arranged in a factory and purifies the air in the factory.

DESCRIPTION OF SYMBOLS 1 Dust collector 12 Dust collection chamber 13 Clean room 31 Current plate 38 End flow plate 39 Central flow plate 30 Suction port 32 Filter 34 Bucket 40 End main body flow plate 41 End removable flow plate 40a, 42a Current flow hole 42 Central body Rectifying plate 43 Central detachable rectifying plate 41a, 43a detachable rectifying hole 45 Filter medium 48 Exhaust opening 53 Flow channel 54 First flow channel 55 Second flow channel 56 Third flow channel 57a First divided flow channel 57b Second Divided flow channel 57c third divided flow channel 57d fourth divided flow channel 57e fifth divided flow channel 57f sixth divided flow channel 68 intake fan S air gap

Claims (8)

A dust collector that collects dust by filtering dust-containing air sucked into a dust collection chamber from a suction port,
A plurality of rectifying holes are formed, and a rectifying plate provided in the dust collection chamber so as to block a flow of dust-containing air sucked from the suction port;
A filter provided in the dust collection chamber in a posture with the filtration surface facing sideways below the suction port and the current plate,
A pair of the suction ports are provided at opposing positions on the upper side surface of the dust collection chamber,
A plurality of the current plates are provided so as to be bilaterally symmetric at predetermined intervals along the left-right direction,
A flow path of dust-containing air is formed downward along the filtration surface of the filter, and the rectifying plate is provided such that the lower part extends to the upper part of the flow path ,
The dust-containing air that has collided with the rectifying plate and the dust-containing air that has passed through the rectifying hole of the rectifying plate flow downward along the rectifying plate and flow into the flow path. Dust collector.   2. The dust collector according to claim 1, wherein a lower portion of the rectifying plate is provided so as to uniformly divide a width in a direction orthogonal to a flow direction of the dust-containing air in the upper portion of the flow path. It is the rectifying plate before Symbol inlet side, dust collecting apparatus according to claim 1 or 2, characterized in that provided in the lower inclined toward the inlet side from the upper end. The dust collector according to any one of claims 1 to 3 , wherein a lower portion of the current plate on the suction port side is provided to extend downward from an upper end of a filtration surface of the filter. . The aperture ratio of the inlet side of the rectifying plate, than the aperture ratio of the other rectifying plate away from the suction port, claims 1, characterized in that it is larger in the range of 20 to 30 percent 4 The dust collector in any one of. The filter has a pair of filter media arranged facing each other in a standing posture through a gap,
The clean air after being filtered dust from the air containing dust by the filter media, dust collecting apparatus according to any one of claims 1 to 5, characterized in that it is discharged from one of the air gap. The dust collecting apparatus according to any one of claims 1 to 6 , wherein the filter is formed such that a filter medium is formed in a pleat shape, and a fold of the filter medium extends in a vertical direction. The dust collection chamber in which the suction port is provided in the upper side surface and the rectifying plate is provided in the upper portion and the side of the dust collection chamber is provided adjacent to the dust collection chamber, and the clean air that has been filtered through the filter passes through the dust collection chamber. A clean room to partition, a partition plate to partition,
A suction fan that is provided above the clean chamber and generates a suction force from the suction port toward the dust collection chamber and the clean chamber;
A bucket that is provided at a lower portion of the dust collection chamber and that receives dust removed from the filter;
The filter is formed by a pair of filter media arranged opposite to each other via a gap, and the gap communicates with the clean chamber through an opening formed in the partition plate, and the filter medium contains dust-containing air. The dust collector according to any one of claims 1 to 7 , wherein the clean air after the dust is collected by collecting the dust is discharged from the clean chamber to the outside by the suction fan.

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