KR950006506B1 - Misf collecting apparatus - Google Patents

Abstract

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Description

Mist collecting device

1 is a longitudinal sectional view showing a schematic structure of a mist collecting device.

2 is a cross-sectional view taken along the line A-A in FIG.

3 is a cross-sectional view taken along the line B-B in FIG.

4 is a longitudinal cross-sectional view equivalent to FIG. 1 with a modified filter structure.

* Explanation of symbols for main parts of the drawings

1: Casing 2: Filter

3: entrance 4: exit

6: Filter Element 15: Axis

17: drive source 23: seal member

24 drain drain

[Industrial use]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention collects harmful mist suspended in air, such as oil mist and acid mist, and relates to a mist collecting apparatus mainly used in factories and the like.

[Prior art]

To remove and remove harmful mists from air containing harmful mists (hereafter simply referred to as "contaminated air"), the harmful mists are filtered by a cleaning method of washing contaminated air and a filter fixed in a multi-stage phase. Known filtration methods, centrifugal separation methods for separating harmful mists by centrifugal force of a filter to be driven in rotation, and the like. For example, a filtration device is known from Japanese Patent Application Laid-Open No. 63-1618 and a centrifugal device is known from Japanese Utility Model Publication No. 58-11373. In addition, centrifugal separation is often combined with filtration.

[Problems to Solve Invention]

The cleaning method is often constituted as a relatively large planted device, has a high introduction cost, and there is no way to avoid disadvantages such as the need for separate treatment of the wastewater after cleaning.

In the filtration apparatus, harmful mist adheres to the filter medium of the filter and agglomerates to separate the harmful mist. It is easy for the eye to be filled up by the agglomerated droplets for him, and it takes a lot of goods for the maintenance work such as the cleaning and the exchange. In addition, in the case of using a waste filter, the running cost is high, and the filter disposal after replacement is required separately.

In the centrifugal separation, the mist of the rotating filter or the screen surface is agglomerated and separated by centrifugal force so that the eye of the rotating filter is almost never filled. Compared to the above two characters, the efficiency of trapping harmful mist is lower than that of the above-mentioned two members. Therefore, a filter for filtration is installed at the rear end of the rotating filter to improve separation of the harmful mist. Therefore, this type of system also suffers from a problem in that the running cost is expensive when a filter that is used for filtration due to a large amount of items is required for maintenance of the filtration filter as in the filtration type.

This invention solves the blinding of the filter by agglomerated droplets, so that it can be maintained without maintenance for a long period of time, and the collecting device of the harmful mist excellent in the economy which can reduce the running cost. To get it.

[Means for solving the problem]

In the mist collecting device of the present invention, an inlet 3 and an outlet 4 are provided at a casing 1, and a harmful mist in the space in the casing 1 between the inlet 3 and the outlet 4 is provided. Filter (2) for trapping the air is disposed on the premise of the mist separation of the mist separation type, that is, the filtration method is prematurely transferred air from the inlet (3) to the outlet (4) air containing harmful mist The electric filter 2 is composed of a group of filter elements 6 formed in a disk shape that divides the casing 1 into a plurality of chambers. The seal member 23 which prevents air flow between adjacent chambers between the periphery of each filter element 6 and the inner surface of the casing 1 is annular. It is installed.

The group of filter elements 6 is configured to be rotatable in accordance with the annular plane of the electrical seal member 23 via the shaft 15 via the drive source 17. According to the seal member 23, a drain groove 24 for recovering the separation liquid separated from the filter element 6 is required.

In addition, the shaft 15 may be arranged vertically so that each filter element 6 may be arranged in an upper and lower end state along the shaft 15. In addition, each filter element 6 can be formed in a coon shape.

[Action]

As described above, the mist collecting device of the present invention basically separates the harmful mist by the filtration method. As a matter of course, each filter element 6 is conspicuous in the filter medium 12 one day by the aggregated droplets. The drive source 17 and the shaft 15 are installed to relieve the snow and repeat the filtration so that the group of filter elements 6 can be rotated by these things. The droplets are transferred to the radially outer side under centrifugal force with the rotation of the filter element 6 and finally fall to the drain groove 24 provided along the seal member 23 and flow down along the grooves. It is guided and recovered. The installation of the seal member 23 between the periphery of each filter element 6 and the inner surface of the casing 1 is such that the contaminated air sent to the blower 5 at the time of separation of the harmful mist is removed from the filter element ( It is to receive what enters the adjacent room from the leading edge of 6).

[Effects of the Invention]

The mist collecting device of the present invention basically performs mist separation by a filtration method, and for this purpose, the filter 2 is constituted by a group of disk-shaped filter elements 6. Thus, when the filter element 6 falls into a state where the eyes are filled with agglomerated droplets, the group of filter elements 6 is rotated through the shaft 15 via the driving source 17. Therefore, by separating the droplets (여) attached to the filter medium 12 to the steel so that the filter element 6 can be used any number of times.

Therefore, according to the mist collecting apparatus of this invention, maintenance work, such as replacement of a filter and cleaning which were indispensable in the conventional apparatus, can be eliminated extremely, and mist collection can be carried out over a long period with almost no maintenance. In addition, since the filter element 6 can be used repeatedly by separating the filter element 6, the running cost required to operate the mist collecting device can be reduced. In combination with those that can be omitted, it is possible to improve the economics of the mist collecting device.

Example 1

1 to 3 show an embodiment (1) of a mist collecting device according to the present invention. In FIG. 1, the mist collecting device accommodates the filter 2 inside the cylindrical casing 1 and shifts the inlet 3 to one side of the upper wall at the lower end of the main wall of the casing 1 to the outlet ( 4) are respectively provided, and the centrifugal blower 5 is attached to the outlet 4, and is basically comprised as a filtration system.

The filter 2 is composed of five filter elements 6 arranged in upper and lower stages, and these filters 6 divide the inside of the casing 1 into a plurality of chambers. In detail, it is divided into four separation chambers 8 separated between the inlet chamber 7 through the inlet 3 and each filter element 6 and the outlet chamber 9 through the outlet 4. The volume of the inlet chamber 7 and the outlet chamber 9 is provided in the separation chamber 8 large enough to pull. As shown in FIG. 2 and FIG. 3, the filter element 6 includes a hollow disk-shaped prosthetic mold 11 and a fibrous material 12 filled with the fibrous material 12 and the prosthetic mold ( It is formed on the disk by the boss 13 fixed to the center of 11). The fan-shaped ventilating window 14 was opened on the upper and lower plates of the mold 11 at regular intervals in the circumferential direction. As the filter medium 12, non-woven mats obtained by Corl processing of natural fibers or synthetic fibers, and then bonded with a binder, such as Saranlock (registered trademark) manufactured by Asahi Kasei Kogyo Co., Ltd. Alternatively, metal wool made of stainless steel, copper alloy, or the like can be used.

In order to support the above-mentioned group of filter elements 6 in the casing 1, a shaft 15 extending vertically through the center of the casing 1 is provided, and the boss of the filter element 6 is attached thereto. The outer boss 13 is externally fixed and the bosses 13 are fixed to the shaft 15. The upper and lower ends of the shaft 15 are rotatably supported by a shaft 16 provided on the upper and lower end walls of the casing 1, and the filter element 6 is casing in a horizontal position when the shaft 15 rotates. (1) I can turn inside. In order to rotate and drive the group of filter elements 6 via the shaft 15, as shown in Fig. 1, a motor (drive source) 17 is installed at the lower periphery of the casing 1, and the output shaft 18 ) And the shaft 15 are connected to each other by the belt 19 and the poly phases 20 and 21 of the upper phase.

Seal member which prevents aeration between the chambers 7, 8, and 9 adjacent between the periphery of each filter element 6 and the inner surface of the casing 1. 23 is provided, and the cylindrical drain groove 24 is provided along the seal member 23 again. As shown in FIG. 3, the sealing member 23 is an annular seal wall 26 attached to the inner surface of the casing 1 and the sealing 25 of rubber material fixed to the periphery of the mold 11. When the filter element 6 is in a stopped state, the seal 25 closes the aeration wall 26 to prevent aeration. The seal 25 uses different materials depending on the type of mist to be separated. For example, they are oil-resistant rubber and acid-resistant rubber. The drain groove 24 is installed in a circumferential shape from here onward in the continuous wall 20, and the whole is barely inclined with the inlet bottom 27 installed in a part thereof as the inclined lower end. (See Figure 1).

The drain port 27 is led to the outer surface of the casing 1 and connected to the collecting passage 28, and communicates with the drain tank outside the drawing via the collecting passage 28. The mist collecting device configured as described above starts the blower 5, suctions contaminated air from the inlet 3, filters it with the filter element 6, and then exits the outlet 4 and the fan casing. Is emitted to the atmosphere via At this time, the motor 17 is stopped and each filter element 6 is stopped. When the sensor (for example, a switch in front of the car) detects that the operating time exceeds a certain value or that the mist concentration in the air discharged from the blower 5 reaches a predetermined value, the operation of the blower 5 is stopped. After that, the motor 17 is started to rotate the group of filter elements 6 via the shaft 15. Then, the droplets attached to the gap of the filter medium 12 are moved out of the radial direction along the filter medium 12 under the centrifugal force and tangentially from the peripheral opening of the shape retainer 11. Bump into Then, it collides with the seal wall 26 and flows down and is guided to the drain groove 24 to be discharged from the drain port 27. At this time, as shown by the imaginary line in FIG. 3, the seal ring 25 is separated from the seal wall 26 by receiving centrifugal force. When the motor 17 is stopped, the seal ring 25 is again in close contact with the seal wall 26.

By rotating the filter element 6 as described above, the droplets attached to the media 12 are reliably removed. Therefore, the filter element 6 can be used repeatedly several times when the need for exchanging or removing droplets is extremely extreme with respect to the filter 2.

Example 2

4 shows an embodiment of a mist collecting device in accordance with the present invention with a modified filter structure. In this embodiment, each filter element 6 has a periphery inclined at its periphery so that its cross sectional area is increased and droplets are separated by a natural dripping action. That is, it was set as the filter structure in which eye drop by droplets is hard to occur compared with Example 1. FIG. Since the other thing is the same as Example 1, the same invalidity is attached | subjected to the same member, and description is abbreviate | omitted.

In addition to the above, this invention can also be implemented with the following modifications. The casing 1 and the shaft 15 are arranged in the horizontal direction and connected to the shaft 15 so as to provide a group of filter elements 6 at regular intervals. That is, when Example 1 is set as a vertical type, the whole is comprised by a transverse line. In this case, however, the drain groove 24 is formed in a cross-section C shape or a shape thereof, and the palate is formed to the side of the shaft 15 to form an annular shape. The filter element 6 should just be formed in the shape of a disk in the whole appearance. On the other hand, it does not have to be flat. For example, the cross-sectional shape on the other hand may be formed in a wave shape continuous in the circumferential direction or the radial direction. Each filter element 6 may be formed with the media 12 of kind and separation performance. For example, the filter element 6 is formed using a medium having a larger pore diameter as it is closer to the inlet 3 and a smaller pore diameter as it is farther from the inlet. In addition to the fibrous material, the filter medium 12 may be applied by laminating a plastic half body, a nonwoven fabric, or the like with a single layer or a fibrous material, depending on the type of screen or mist, such as a gold mesh or punching metal. The blower 5 may be provided at the inlet 3 side, or may be provided at both the inlet 3 and the outlet 4. As a drive source 17, an air motor, a hydraulic motor, etc. can also be used. The deceleration (or speed-up) device of the belt transmission method described in Embodiment 1 is not necessarily required, and the motor 17 may be directly connected to the shaft 15.

Claims (3)

The inlet 3 and the outlet 4 are provided in the casing 1, and the harmful mist is trapped in the space in the casing 1 between the inlet 3 and the outlet 4. The filter 2 is disposed, the space containing the harmful mist is a mist collecting device forcibly transferred from the inlet (3) to the outlet (4) by the blower and the electric filter (2) is casing (1) ) Is composed of a group of filter elements (6) formed in a disk shape that divides the plurality of threads into a plurality of chambers, and the periphery and casing of each filter element (6). The seal member 23 which prevents aeration between the chambers adjacent to the inner surface of (1) is formed in an annular shape, and a group of filter elements 6 is a driving source. (17) is configured to be rotatable in accordance with the annular plane of the seal member 23 which is interposed through the shaft 15 and according to the seal member 23 A mist collecting device provided with a drain hole (24) for recovering a separation liquid separated from the filter element (6). The mist collecting apparatus of Claim 1 in which the shaft 15 is vertically arrange | positioned, and each filter element 6 is arranged in upper and lower stages in connection with the shaft 15. A mist collecting device according to claim 1 or 2, wherein each filter element is formed in a cone shape.