JP4006103B2 - Dust collector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dust collector that collects fine particles contained in a fluid to be filtered such as gas.
[0002]
[Prior art]
A filter unit in which the upper part of a cylindrical or flat rectangular filter element is supported by a support plate and the upper part of the filter element is opened on the support plate is already known.
[0003]
A dust collector using the above filter unit usually forms an upper chamber and a lower chamber inside a casing, arranges the filter element of the filter unit in the lower chamber, and supports the upper portion of the filter element. Is attached to a partition plate between the upper chamber and the lower chamber, the filtered fluid supplied into the lower chamber is filtered by the filter element, and the dust contained in the filtered fluid is collected by the filter element.
[0004]
Further, the clean fluid that has passed through the filter element and has flowed into the upper chamber is exhausted to the outside through an exhaust port formed in the peripheral wall of the upper chamber or an exhaust tube communicating with the upper chamber.
[0005]
In the dust collector as described above, in order to enable maintenance such as cleaning of the filter element or replacement when it is damaged, the filter unit is detachably attached so that the filter unit can be taken out of the casing. .
[0006]
By the way, if the filter unit can be attached to and detached from the upper chamber side, the upper chamber needs to have a height that allows the entire filter unit to be pulled up.
[0007]
In addition, since an air injection pipe for injecting high-pressure air into the filter element to backwash the filter element is arranged in the upper chamber, it is necessary to attach and detach the filter unit so as not to interfere with the air injection pipe. There is a problem that it takes much time to attach and detach.
[0008]
In order to solve such a problem, a dust collector as shown in FIG. 8 has been proposed. In this dust collector, the support plate 45 of the filter unit 44 is brought into contact with the lower surface of a partition plate 43 that partitions the inside of the casing 40 into an upper chamber 41 and a lower chamber 42, and both ends of the support plate 45 are connected to bolts 48. Then, the nut 49 fixed to the partition plate 43 is screwed and tightened. When replacing the filter unit 44, the bolt 48 is loosened to remove the filter unit 44, and the filter unit 44 is pulled out from a drawer port 50 formed in the peripheral wall of the lower chamber 42.
[0009]
Here, the drawer opening 50 can be opened and closed by a door 51.
[0010]
[Problems to be solved by the invention]
By the way, in the dust collector shown in FIG. 8, two workers who support both ends of the filter unit 44 are required when the filter unit 44 is attached and detached, and the two workers attach and remove the bolt 48. It is necessary to secure a work space for performing the work on the door 51 side and the opposite side of the casing 40, and there is an inconvenience that a large space must be secured for installation of the dust collector. Furthermore, since the bolts 48 are tightened while supporting the weight of the filter unit 44 at the time of mounting, much labor is required.
[0011]
In addition, the casing 40 is provided with an operation window 52 for rotating the bolt 48 on the side opposite to the door 51, and the operation window 52 needs to be opened and closed by the door 53, and the configuration of the casing 40 is complicated. is there.
[0012]
The subject of this invention is providing the dust collector which enabled it to attach or detach a filter unit easily by one operator.
[0013]
[Means for Solving the Problems]
In order to solve the above problems, in the present invention, an upper chamber having an exhaust portion and a lower chamber to which a fluid to be filtered is provided are provided inside the casing, and the peripheral wall of the lower chamber is opened and closed by a door. A plurality of guide plates are formed at intervals between the upper chamber and the lower chamber so that the guide rails can be accommodated between the upper chamber and the lower chamber, and are inserted between the guide plates in the direction of the drawer port. A filter unit that integrates the upper part of the self-shaped filter element on a support plate supported on the upper surface of the rail is detachably attached to the movable guide rail. The guide rail is lowered on the guide plate. Provided with a plurality of pins to be held at the same position, a guide pin is provided at the inner end of the casing, and the guide pin is inserted into the tip of the guide rail when the guide rail is pushed in. In a state where the tapered surface that is guided and moves up the tip end portion of the guide rail, the upper surface of the filter unit is in close contact with the lower surface of the partition plate, and the upper opening of the filter element coincides with the communication hole formed in the partition plate A positioning notch for engaging the guide pin, and a fastening means for fixing the push-side rear end of the guide rail to the partition plate in a positioning state where the notch is engaged with the guide pin. Is adopted.
[0014]
Here, as the fastening means, it is possible to employ one comprising a nut fixed to the partition plate and a set bolt screw-engaged with the nut.
[0015]
With the configuration described above, when the guide rail supporting the filter unit is supported by the pin, when the rear end of the guide rail is pushed in, the tapered surface is guided by the guide pin and the tip of the guide rail is moved upward. The notch is engaged with the guide pin, the upper surface of the filter unit is in close contact with the lower surface of the partition plate, and the upper opening of the filter element coincides with the communication hole of the partition plate. Therefore, the filter unit can be held in the mounted state by fixing the rear end portion of the guide rail to the partition plate by the fastening means. The filter unit can be satisfactorily adhered to the lower surface of the partition plate by attaching an elastic sealing material to the upper surface of the support plate of the filter unit.
[0016]
Further, by releasing the fastening means and pulling the guide rail, the guide rail is lowered and supported by the pin. For this reason, the filter unit can be attached and detached by one operator.
[0017]
Here, when the guide rail is moved by pushing and pulling, the guide rail moves in contact with the pin and the guide pin, and in the state in contact with the guide pin, the guide rail can be tilted around the contact point. The guide rail can be moved in a state where only the top end portion of the filter unit is in contact with the partition plate. For this reason, resistance at the time of movement of a guide rail is small, and a guide rail can be moved smoothly.
[0018]
In addition, if the pin close to the drawer opening is provided at a position away from the rear end of the guide rail when the filter unit is mounted, the guide rail can be tilted at a large angle. The contact resistance of the sealing material of the filter unit with respect to the lower surface of the filter can be reduced, and wear of the sealing material at the time of mounting can be suppressed to a narrow range at the tip.
[0019]
In the dust collector configured as described above, as a method for detachably supporting the filter unit with respect to the guide rail, an insertion hole for inserting a filter element is formed in the guide rail, and the filter unit is attached / detached from above the guide rail. A method or a method of forming a guide groove that opens at the rear end of the guide rail and inserting and removing the filter element of the filter unit with respect to the guide groove can be employed.
[0020]
When exchanging the filter unit in which the filter element is inserted into the insertion hole of the guide rail, the guide rail is pulled out from the drawer port, and the filter unit is exchanged outside the casing.
[0021]
Since the guide rail in which the insertion hole is formed has high rigidity and hardly deforms, a heavy filter unit can be stably supported.
[0022]
On the other hand, when replacing the filter unit in which the filter element is inserted into the guide groove of the guide rail, the filter unit is inserted into and removed from the guide groove while the guide rail is supported by the pins.
[0023]
In this case, since it is not necessary to pull out the guide rail to the outside, the filter unit can be easily replaced, and the outer circumference part of the filter element is in contact with the inner surface of the guide groove when inserting and removing. It can be removed without dropping the dust adhering to the outer surface of the filter element, and there is no risk of soiling the surroundings.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0025]
As shown in FIG. 1, an upper chamber 2 and a lower chamber 3 are provided inside the casing 1, and an exhaust port 4 as an exhaust portion is formed on the peripheral wall of the upper chamber 2. On the other hand, an inlet 5 and an outlet 6 for the fluid to be filtered are formed in the peripheral wall of the lower chamber 3, and the outlet 6 can be opened and closed by a door 7.
[0026]
As shown in FIG. 2, the partition plate 8 between the upper chamber 2 and the lower chamber 3 has a plurality of communication holes 9 arranged in a straight line toward the direction of the drawer outlet 6 in a direction perpendicular to the arrangement direction. Is provided.
[0027]
A pair of guide plates 10 are provided on the lower surface of the partition plate 8 on both sides of the communication holes 9 in each row, and the filter unit 12 is supported by guide rails 11 provided between the guide plates 10. .
[0028]
As shown in FIGS. 3 to 5, the guide rail 11 has a U-shaped cross section in which a pair of flanges 11b are formed downward on both sides of the belt-shaped receiving plate 11a, and a plurality of insertion holes 13A are formed in the receiving plate 11a. Is formed.
[0029]
The guide rail 11 is movable in the vertical direction and the length direction between the pair of guide plates 10, and the pair of flanges 11 b are received by pins 14 protruding from the inner surface of the guide plate 10 at the lowered position. .
[0030]
As shown in FIG. 2, the filter unit 12 supports upper portions of a plurality of cylindrical filter elements 25 whose upper portions are open by a support plate 26, and a sealing material 27 having elasticity such as rubber on the upper surface of the support plate 26. The upper opening of each filter element 25 is opened on the upper surface of the sealing material 27.
[0031]
Each of the plurality of filter elements 25 is porous and has a self-holding property. The filter element 25 has an outer diameter that can be inserted into the insertion hole 13 </ b> A of the guide rail 11, and the upper portion is supported by the support plate 26 with a linear arrangement.
[0032]
In the embodiment, a plurality of filter units 12 can be supported by the guide rails 11, and the filter elements 25 in the respective filter units 12 are connected to the partition plate 8 at positions where the guide rails 11 are raised. The upper opening communicates with the hole 9.
[0033]
When the guide rail 11 is moved in the length direction, the leading end in the moving direction is guided obliquely upward by the guide mechanism 15.
[0034]
The guide mechanism 15 is provided with a tapered surface 16 at the distal end portion of the flange 11 b in the guide rail 11, and on the other hand, a guide pin 17 that receives the tapered surface 16 is fixed to the rear end portion of the guide plate 10. Here, the tapered surface 16 is inclined with an upward scent toward the tip of the guide rail 11, and a notch 18 that can be engaged with the guide pin 17 is formed at the lower end thereof. In a state where the notch 18 is engaged with the guide pin 17, the seal material 27 is in close contact with the lower surface of the partition plate 8, and the guide rail 11 is in a state where the upper opening of the filter element 25 is aligned with the communication hole 9 of the partition plate 8. Is positioned.
[0035]
The guide rail 11 is fastened by a fastening mechanism 20 at a rear end portion located on the drawer port 6 side in a positioning state where the notch 18 is engaged with the guide pin 17. Here, the fastening mechanism 20 inserts a set bolt 23 into a bolt insertion hole 21 formed in the rear end portion of the strip-shaped receiving plate 11 a of the guide rail 11, and attaches the bolt 23 to the nut 24 fixed to the partition plate 8. The screw is engaged and tightened.
[0036]
As shown in FIG. 2, an air injection pipe 28 is provided in the upper chamber 2. An air injection nozzle 29 is provided in the air injection tube 28 at a position facing the communication hole 9 formed in the partition plate 8, and high-pressure air can be injected from each air injection nozzle 29 toward the communication hole 9. ing.
[0037]
1 and 2 show a set state of the filter unit 12, and the guide rail 11 is positioned at the front end portion by engagement of the notch portion 18 with the guide pin 17, and the set end bolt is screw-engaged with the nut 24 at the rear end portion. 23 is fixed by tightening. The seal member 27 of the filter unit 12 is in close contact with the lower surface of the partition plate 8, and the upper opening of each filter element 25 communicates with the communication hole 9 of the partition plate 8.
[0038]
In the set state of the filter unit 12 as described above, if a dust-containing gas as a fluid to be filtered flows into the lower chamber 3 from the inlet 5 while applying a suction force to the exhaust port 4 shown in FIG. The dust gas is filtered by the filter element 25, and the dust contained in the dust-containing gas is captured by the filter element 25.
[0039]
The clean gas that has passed through the filter element 25 flows into the upper chamber 2 from the communication hole 9 and is discharged from the exhaust port 4.
[0040]
When the filter element 25 is clogged by filtration of the dust-containing gas, high pressure air is jetted from the air jet nozzle 29 of the air jet pipe 28 toward the communication hole 9 to backwash each of the filter elements 25.
[0041]
When the filter unit 12 is replaced due to cleaning of the filter unit 12 or damage to the filter element 25, the door 7 is opened with the inflow of the dust-containing gas stopped, and the set bolt 23 is removed from the outlet port 6. After rotating and removing, the guide rail 11 is pulled toward the drawer port 6, and the guide pin 11 is lowered by guiding the movement of the tapered surface 16 by the guide pin 17.
[0042]
As shown in FIG. 6, when the guide rail 11 is supported by the pin 14, the guide rail 11 is pulled out from the drawer port 6 along the pin 14, and the filter unit 12 is replaced outside the casing 1.
[0043]
When replacing the filter unit 12, the old filter unit 12 is pulled out from above the guide rail 11, the filter element 25 of the new filter unit 12 is inserted into the insertion hole 13A, and the support plate 26 is attached to the receiving plate 11a of the guide rail 11. Overlapping.
[0044]
After replacement of the filter unit 12, the guide rail 11 is placed on the pin 14 from the outlet 6, the guide rail 11 is pushed into the back side of the casing 1, and the guide rail 11 is moved by contact movement of the tapered surface 16 with respect to the guide pin 17. Is moved diagonally upward.
[0045]
Here, when the guide rail 11 is pushed to a position where the notch 18 engages with the guide pin 17, the sealing material 27 comes into close contact with the lower surface of the partition plate 8, and the upper opening of the filter element 25 coincides with the communication hole 9. By fixing the rear end portion of the guide rail 11 by tightening the set bolt 23, the filter element 25 is held in close contact with the partition plate 8 in a state where the upper opening coincides with the communication hole 9.
[0046]
As described above, when the guide rail 11 supported by the pin 14 is pushed in, the tip end portion of the guide rail 11 moves upward due to the contact of the tapered surface 16 with the guide pin 17, and the notch 18 is engaged with the guide pin 17. If the guide rail 11 is pulled, the guide rail 11 is lowered and supported by the pin 14, and can be pulled out from the drawer port 6 along the pin 14. The operator can easily attach and detach the filter unit 12.
[0047]
Here, if the pin 14 located on the drawing-out port 6 side is provided at a position away from the rear end of the guide rail 11 in the mounted state of the filter unit 12, the position before the tip end portion of the guide rail 11 is positioned is shown in FIG. 6, the inclination angle of the guide rail 11 can be increased, wear of the sealing material 27 due to contact with the lower surface of the partition plate 8 can be suppressed to a small range of the tip portion, and the guide rail 11. Can be used for a long time. Further, since the pressure-bonded state deflected in the front-rear direction of the front end portion of the sealing material 27 at the time of pressing is once released and then pushed upward, the entire sealing material 27 can be brought into close contact with the partition plate 8 with a uniform force.
[0048]
If a roller pin is used as the pin 14, the guide rail 11 can be moved smoothly.
[0049]
FIG. 7 shows another example of the guide rail 11. In this example, a guide groove 13B that opens at the rear end is formed in the receiving plate 11a of the guide rail 11, and the filter element 25 of the filter unit 12 can be inserted into and removed from the guide groove 13B.
[0050]
When the guide rail 11 as described above is used, the filter unit 12 can be inserted / removed along the guide groove 13B at the lowered position where the guide rail 11 is supported by the pin 14, so that the filter unit 12 can be replaced, etc. It is not necessary to pull out the guide rail 11 to the outside at the time of attachment / detachment by the above, and the attachment / detachment work of the filter unit 12 can be easily performed.
[0051]
Further, when the filter unit 12 is attached / detached, since a part of the filter element 25 is in contact with the inner periphery of the guide groove 13B, the dust adhering to the outer periphery of the filter element 25 is very little dropped and the surroundings may be soiled. Absent.
[0052]
When the rear end of the guide rail 11 is fixed, a presser fitting 22 having a width larger than that of the guide groove 13B is brought into contact with the rear end of the lower surface of the receiving plate 11a and set in a bolt insertion hole 22 formed in the presser fitting 22. The bolt 23 is inserted, and the tip portion is screwed into a nut 24 fixed to the partition plate 8 shown in FIG.
[0053]
In the embodiment, the filter element 25 has a cylindrical shape with an upper opening, but the shape of the filter element 25 is not limited to this. For example, it may be a flat prism with an open top, a star-shaped cross section, or a polygonal shape such as chrysanthemum. When such a filter element is employed, it is preferable to form a communication hole in the partition plate 8 having a shape that matches the upper opening of the filter element.
[0054]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0055]
In the invention according to claim 1, by pushing and pulling the rear end portion of the guide rail that supports the filter unit so that it can be freely inserted and removed, the taper surface is guided by the guide pin, and the guide rail moves obliquely up and down. In addition, since the rear end portion of the guide rail is fixed by the fastening means, the filter unit can be easily attached and detached by one operator.
[0056]
In addition, since the notch portion is engaged with the guide pin and the tip end portion of the guide rail is positioned, the filter unit can be attached to the predetermined position with high accuracy.
[0057]
Further, since the guide rail is guided by the pin and the guide pin, the movement resistance is small, the guide rail can be moved smoothly, and the filter unit can be efficiently attached and detached.
[0058]
In the invention according to claim 2, by forming the insertion hole into which the filter element can be inserted into the guide rail, it is possible to obtain a guide rail having high rigidity and little deformation.
[0059]
In the invention according to claim 3, since the filter unit can be inserted and removed from the guide groove formed in the guide rail, there is no need to pull out the guide rail to the outside of the casing when the filter unit is attached and detached, and the filter unit can be attached and detached. It can be done easily.
[0060]
In the invention according to claim 4, since the guide rail can be largely inclined before the notch is engaged with the guide pin, only the tip of the filter unit is attached to the lower surface of the partition plate when the filter unit is mounted. Can be made to contact in a narrow range, and the wear of the upper surface of the filter unit can be minimized, and the front-rear direction deflection of the seal material can be reduced and the contact can be made with a uniform force. .
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view of a dust collector according to the present invention. FIG. 2 is an enlarged cross-sectional view showing the main part of the same. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 2. FIG. 5 is an exploded perspective view showing the guide rail and the filter unit. FIG. 6 is a cross-sectional view showing the descent stop state of the guide rail. FIG. 8 is a cross-sectional view showing another example of the guide rail same as above. FIG. 8 is a cross-sectional view showing a conventional dust collector.
1 Casing 2 Upper chamber 3 Lower chamber 6 Drawer port 7 Door 8 Partition plate 9 Communication hole 11 Guide rail 12 Filter unit 13A Insertion hole 13B Guide groove 14 Pin 16 Tapered surface 17 Guide pin 20 Fastening mechanism 23 Set bolt 24 Nut 25 Filter Element 26 Support plate 27 Sealing material 30 Guide hole 31 Inclined hole 33 Guide pin

Claims (6)

An upper chamber having an exhaust part inside the casing and a lower chamber to which a fluid to be filtered is supplied, a drawer opening opened and closed by a door is formed on the peripheral wall of the lower chamber, and a partition between the upper chamber and the lower chamber is formed A plurality of guide plates are fixed on the lower surface of the plate with an interval that allows the guide rails to be accommodated, and supported on the rail upper surface by a guide rail that is assembled between the guide plates and movable in the direction of the drawer opening. A filter unit in which the upper part of the self-holding filter element is integrated is detachably attached to the support plate, and the guide plate is provided with a plurality of pins for holding the guide rail in a lowered position, and in the casing. A guide pin is provided at the back end of the guide rail, and the tip of the guide rail is guided by the guide pin when the guide rail is pushed in to move the tip of the guide rail upward. A positioning notch for engaging the guide pin in a state where the upper surface of the filter unit and the upper surface of the filter unit are in close contact with the lower surface of the partition plate and the upper opening of the filter element coincides with the communication hole formed in the partition plate , And a dust collector provided with fastening means for fixing the pushing-side rear end portion of the guide rail to the partition plate in a positioning state in which the notch portion engages with the guide pin. The dust collector according to claim 1, wherein an insertion hole into which the filter element is inserted is formed in the guide rail, and the filter unit is detachably supported above the guide rail. The dust collecting device according to claim 1, wherein a guide groove for inserting a filter element that opens at a rear end in the pushing direction is formed in the guide rail, and the filter unit is detachable along the guide groove. The pin located at a position close to the drawer port among the plurality of pins is disposed at a rear position away from the rear end in the pushing direction of the guide rail in a state where the notch is engaged with the guide pin. The dust collector in any one of. The dust collector according to any one of claims 1 to 4, wherein a sealing material that is in close contact with the lower surface of the partition plate is fixed on the support plate of the filter unit. The dust collector according to any one of claims 1 to 5, wherein the fastening means includes a nut fixed to the partition plate and a bolt screw-engaged with the nut.

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