JP4789040B2 - Bag filter mounting mechanism of dust gas removal unit - Google Patents

Description

  The present invention filters a dust filter containing harmful substances, viruses, bacteria, etc. generated from a pharmaceutical factory, a gene / cell culture laboratory, a boiler, an incinerator, or the like, and replaces the bag filter. The present invention relates to a bag filter attachment mechanism of a dust gas removal unit that sometimes prevents a gas leak to the outside by attaching a plastic bag to a filter exchange port.

  In recent years, with the rapid development and spread of pharmaceuticals, genetics and cell culture research laboratories, dust gas containing harmful substances is discharged in some exhaust systems of pharmaceutical factories and research laboratories, which makes stricter environmental measures. In addition to simply installing a filter in the exhaust system, a dust gas removal unit 101 having a completely airtight structure as shown in FIG. 7 has been developed and used. That is, the gas removal unit 101 is attached with a bag filter 102 in an airtight structure to filter dust gas during operation, and also when the bag filter 102 is replaced, a plastic bag is inserted into the filter replacement port 103 on the front surface of the gas removal unit 101. It is designed to be able to prevent dust gas from leaking by attaching 104.

  The bag filter 102 of the dust gas removal unit 101 is mounted horizontally to replace the bag filter 102 used for filtering the dust gas with a new bag filter 102 with a vinyl bag 104 interposed therebetween.

Therefore Dasutogasu taken in from Dasutogasu inlet 105 of Dasutogasu removal unit 101 is a bag filter two become gas are filtered flows from the bag filter the primary side of the bag filter 102 after being diffused to a uniform flow rectifying plate 106 primary It is exhausted from the side . When dust is removed from the bag filter 102, pulse air is blown out from the nozzle 107 to regenerate the surface of the bag filter 102 on the primary side of the bag filter . At this time, the pulsed air diffuses in the bag filter 102 from the horizontal direction to the bag filter 102 all around the surface in a substantially right angle direction so as to wipe off dust. In addition, there is a problem that the dust that has been wiped off accumulates again on the upper surface of the bag filter 102 and shortens the life of the bag filter 102 quickly.

Problems to be solved by the invention

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the conventional problems as described above and provide a bug filter having a long lifetime.

  Another object of the present invention is to provide a bag filter mounting mechanism in which bag filters can be arranged vertically.

  Another object of the present invention is to facilitate replacement of the bag filter for attachment or removal.

  It is another object of the present invention to provide a dust filter removing mechanism for a dust gas removing unit that can reduce the size of the bag filter space and reduce the manufacturing cost.

  Another object of the present invention is to provide a bag filter mounting mechanism for a dust gas removal unit that can be removed by pulsed air while maintaining the filter vortex performance required for the bag filter.

  Another object of the present invention is to provide the fact that the bag filter is arranged in a vertical shape to ensure the payment.

Means for solving the problem

  The solution of the present invention includes a dust gas introduction port containing harmful substances on one side wall, an exhaust port for filtered gas at the upper end, a dust hopper for discharging treated dust at the lower end, and a rectifying plate integrated at the lower end inside. In the dust gas removal unit provided with a partition plate and a top plate, a vertical bag filter is installed in the gas removal unit, and the introduced dust gas containing harmful substances is filtered without leaking outside. It is what.

  Another solution is characterized in that a bag filter mounting mechanism is provided so that the dust gas does not leak even when the vertical bag filter installed in the dust gas removal unit is replaced.

  Another solution is that the bag filter mounting mechanism slides up and down the first arm that is pivotally attached to the column, the second arm that is pivotally attached to the first arm, and the second arm. It is characterized by comprising a handle.

  Another solution is that the bag filter is pressed against the top plate by being slid upward with the handle of the second arm on which a predetermined number of bag filters are placed, so that the bag filter is securely and securely held. It is characterized by the fact that it has been adapted.

  Another solution is to use a plastic bag from the filter opening with a lid that can be opened and closed provided on one side wall of the dust gas removal unit body even when replacing the vertical bag filter installed in the dust gas removal unit. This is characterized in that there is no leakage of dust gas.

  The effect | action by the said problem-solving means is as follows. That is, the dust gas sucked into the gas removal unit by the intake operation of the dust gas removal unit first collides with the partition plate to remove the coarse particle size dust, and the air containing fine particle size dust is the rectifying plate. It is diffused into a uniform flow and sucked into the bag filter. The inhaled air is filtered through a bag filter and released as clean air to the atmosphere through an exhaust port. When the bag filter needs to be wiped off, the dust gas suction operation is stopped and the bag filter is wiped off.

  At this time, the dust having a coarse particle size that collides with the partition plate and the dust that has been removed are dropped and discharged to a hopper formed at the lower end of the removal unit.

Next, when replacing the new bag filter, open the filter opening with openable lid provided on the side wall of the gas removal unit, pull the handle upward through the plastic bag attached to the exchange port, and bring the second arm forward By pulling, the used bag filter can be taken out and discarded while wrapped in a plastic bag. A new plastic bag containing a new bag filter is attached to the replacement port, a predetermined number of new bag filters are placed on the second arm, the second arm is pushed in, the handle is lowered downward, and the bag filter Is attached to the top plate so that there is no dust gas leakage.

The invention's effect

As described above, the bag filter mounting mechanism of the dust gas removal unit of the present invention can provide the following effects.
(1) By arranging the bag filter in a vertical shape, the filtering function is maintained uniformly over the entire surface of the bag filter, so that more dust can be collected and an effect of a long life can be obtained.
(2) By arranging the bug filters in a vertical shape, it is possible to evenly remove the bag filters, and there is no premature service life due to the loss of conventional offset.
(3) Since the bag filter is mounted on the second arm, the second arm is pushed inward, and the handle is slid upward so that the bag filter can be pressed against the top plate. The structure is simple and compact.
(4) Since the bag filter can be pressed against the top plate by simply sliding the handle of the second arm on which the predetermined number of bag filters are placed upward, it is very easy to install and remove the bag filter. is there.
(5) Since the bag filter can be pressed and fixed to the top plate, the seal is more reliable.
(6) Since the bag filter can be exchanged through the plastic bag attached to the filter exchange port, it is possible to completely prevent the dust gas from leaking.
(7) Economical effects such as reduction of the manufacturing cost of the bag filter mounting mechanism itself are significant.

Hereinafter, a bag filter mounting mechanism of a dust gas removal unit according to an embodiment of the present invention will be described with reference to FIGS.
(Embodiment)
Reference numeral 1 denotes a dust gas removing unit main body into which dust gas containing harmful substances and the like is introduced. The main body is divided into a bag filter primary side 4 and a bag filter secondary side 5 by a partition plate 2 and a top plate 3. A required number of holes 6 are formed in the top plate 3, and a bag filter 7 is attached so as to close the holes 6. The bag filter 7 is obtained by folding a filter cloth made of a synthetic fiber non-woven fabric or glass fiber into a pleat-like hollow body in the form of a bag path. A column 8 is fixed to the partition plate 2, and a first arm 9 is rotatably attached by a pin 10. One end of a second arm 11 is rotatably attached to the first arm 9 by a pin 12. A column 14 having a projection 13 is attached to the top plate 3. A handle 15 is rotatably attached to the protrusion 13 of the column 14. A protrusion 16 is formed at one end of the handle 15, and the other end of the second arm 11 is placed on the protrusion 16 and held at a predetermined position. Further, the second arm 11 is provided with a projection 17 that performs the positioning function of the second arm 11 itself and a positioning plate 18 when the bag filter 7 is set. When the bag filter 7 is set, one end of the handle 15 is lifted upward from the position shown in FIG. 5A, and the other end of the handle 15 is lowered. Next, when the second arm 11 is pulled forward, one end of the first arm 9 is pulled as shown in FIG. 5C, and the second arm 11 is pulled forward. Next, the other end of the handle 15 moves downward as shown in FIG. 5C while sliding the guide plate 19 formed on the second arm 11, and one end of the handle 15 is lifted.

  Next, a predetermined number of bag filters 7 are pushed in from the filter exchange port 20 while being placed on the second arm 11 as shown in FIG. 5 (d), and when the terminal bag filter 7 reaches the position of the positioning plate 18. When the second arm 11 is pushed into the gas removal unit 1, the second arm 11 rotates to the back about the pin 10. Further, when the handle 15 is pushed down, the second arm 11 is lifted upward with the protrusion 13 as an axis. As a result, the bag filter 7 is pressed against the top plate (3) through the packing 21 and is bugged in an airtight state. The filter 7 is set securely.

  At this time, the projection 17 hits the stopper 22 attached to the top plate 3 so that the positioning of the second arm 11 is performed reliably.

Reference numeral 23 denotes a rectifying plate that is integrally attached to the lower portion of the partition plate, and serves to rectify the dust gas introduced into the gas removal unit from the dust gas inlet 24 into a uniform flow before passing through the bag filter 7. To fulfill. 25 is a plastic bag secured to the filter replacement port 20 with an O-ring, and 26 is a lid secured with screws. Reference numeral 27 denotes a dust removal nozzle of the bag filter 7 installed in the bag filter secondary side 5 .

Next, the dust collection operation of the present invention will be described.
First, dust gas containing harmful substances generated in the manufacturing process of the chemical factory is introduced into the gas removal unit 1. The introduced dust gas collides with the partition plate 2, and coarse dust is separated and removed and dropped to the dust hopper 28. The dust gas from which the coarse dust has been removed passes through the rectifying plate 23 and is guided to the bag filter 7. The guided dust gas is filtered when passing through the bag filter 7, is guided to the bag filter secondary side 5 , and is exhausted as a clean gas from the exhaust port 29.

The above dust collection operation is repeated, and the bag filter 7 is replaced with a new one when the lifetime of the bag filter 7 comes to an end.
Therefore, a method for replacing the bag filter 7 will be described with reference to FIGS.
(1) First, the exhaust blower is stopped, and the inlet and exhaust dampers (not shown) of the dust gas removal unit are closed.
(2) Next, the lid 26 is opened and the folded old plastic bag 25 is pulled out, and a hand is inserted into the plastic bag 25. Release the lock.
Then, the used bag filter 7 is pulled into the plastic bag 25 and moved to the rear part of the plastic bag 25 . (Figures b to c)
(3) The air in the plastic bag 25 is pushed out, the portion from the front of the plastic bag 25 is welded and sealed with a high-frequency hand sealer or the like, the central portion of the seal is cut, and the used bag filter 7 is enclosed. The rear part is moved to a predetermined processing place. (Figure d)
(4) Next, a new plastic bag 25 containing the new bag filter 7 is attached and sealed to the filter replacement port 20 from above the used plastic bag 25 by an O-ring. Thereafter, the front part of the old plastic bag 25 remaining in the new plastic bag 25 is removed. (Figures e and f)
(5) Push the removed front part of the old plastic bag 25 and the O-ring to the rear part of the new plastic bag 25, and set the new bag filter 7 at a predetermined position by using the bag filter mounting mechanism.
Thereafter, the front part of the used plastic bag 25 and the O-ring are enclosed in the rear part of a new bag filter and separated at the center part. (F)
(6) Fold the last remaining plastic bag 25 into the unit, close the lid 26 and tighten. After that, the dampers of the introduction port and the exhaust port of the dust gas removal unit are opened and air blowing is started. (Figure g)
The bag filter 7 can be replaced without leaking dust gas containing harmful substances to the outside by the above operation.

In recent years, with the rapid development and spread of pharmaceuticals and gene / cell culture laboratories, dust gases containing harmful substances and the like are discharged into some exhaust systems of pharmaceutical factories and laboratories. For this reason, more stringent environmental measures are required, and it is not only necessary to install a filter in the exhaust system, but also to filter dust gas with a bag filter installed inside and to attach a plastic bag to the filter replacement port when replacing the bag filter. A dust gas removal unit that can be replaced is used. However, in the case of a pleated type bug filter, there is a problem that a lateral mounting structure is unavoidable for replacing the bug filter, which shortens the service life quickly. On the other hand, the present invention is one in which the bug filter is placed vertically so that the function of the bug filter can be sufficiently exhibited, and the industrial utility value is very high.

It is 1 part longitudinal cross-section schematic which shows the dust gas removal unit of this invention. It is the schematic which shows the bag filter attachment mechanism of this invention. FIG. 3 is a top view of FIG. 2. It is AA 'sectional drawing of FIG. FIGS. 5A to 5D are explanatory views showing a bag filter removal mechanism. FIGS. 6A to 6G are explanatory views showing a procedure for replacing the bag filter. It is 1 part longitudinal cross-section schematic which shows the conventional dust gas removal unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Dust gas removal unit main body 2 ... Partition plate 3 ... Top plate 4 ... Bag filter primary side 5 ... Bag filter secondary side 7 ... Bag filter 8 ... Post 9 .... First arm 11 ... Second arm 14 ... Post 15 ... Handle 20 ... Filter exchange port 23 ... Rectifying plate 24 ... Inlet 25 ... Vinyl bag 26 ... Ladder 29 ... Exhaust port

Claims (1)

Dust gas containing harmful substances on one side wall, filtered clean gas exhaust port at the top, dust gas removal unit consisting of a dust hopper that discharges treated dust at the bottom, and rectification at the bottom inside the dust gas removal unit body plate from above the partition plate and Dasutogasu removal unit top plate and filter replacement port and plastic bag the plastic bags were fitted for dividing the inner body into the bag filter primary side and the bag filter secondary side that is integral with the filter replacement port In a dust gas removal unit composed of a fixed lid, a first arm and one end pivotably attached to a column provided on a rectifying plate, a partition plate or a top plate are pivotable to the first arm Mounted on the second arm and the second arm mounted on the handle that is attached and the other end is rotatably mounted on the column of the top plate Bag filter attachment mechanism Dasutogasu removal unit comprising a bag filter.

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