JPH0660407U - Filtration device and filter for filtration device - Google Patents

Abstract

(57) [Summary] [Purpose] For example, the present invention relates to a filtering device and a filter for a filtering device used for filtering a liquid such as a paint sludge mixed liquid accumulated in a storage tank such as a water tank for a water-washing booth. It is an object of the present invention to provide a filter device capable of efficiently filtering the above liquid, and a filter for a filter device suitable for such a filter device. [Structure] The filtration device according to the present invention is configured such that the liquid to be filtered in a storage tank is guided to a filter 3 via a pump 4, and a flow rate adjusting valve 8 and a discharge port 9 are provided between the pump 4 and the filter 3. Is provided, and the liquid from the discharge port 9 is jetted into the storage tank to stir the liquid in the storage tank. The filter device filter 3 according to the present invention uses a sheet-shaped filter medium 31, the filter medium 31 is housed in the filter medium holding member 32, and the filter medium fixing member 33 is provided between the filter medium holding member 32 and the inner surface of the filter medium holding member 32. It is characterized in that it is sandwiched between and held.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a filter device and a filter for a filter device, which are used when, for example, a liquid such as a paint sludge mixed liquid accumulated in a liquid storage tank such as a water-washing type coating booth water tank is filtered.

[0002]

[Prior art]

 Conventionally, when painting various kinds of articles with paint spray, etc., they are scattered in a ventilator or mist for the purpose of preventing the worker's health from being damaged by the scattered paint, and for the purpose of environmental protection and disaster prevention. It is desired to carry out the painting work in a painting booth equipped with a means for collecting paint mist, and the washing booth is often used as the painting booth.

In the water-washing type coating booth, generally, water sprayed from a water spray, a shower or the like or water flowed in a thin film form from a water flow plate adsorbs paint mist scattered in the booth. The paint collected in the water tank at the bottom of the inside of the tank is initially collected and floats as a large film floating on the water surface due to its adhesiveness, and becomes sludge as the solvent evaporates. Settles to the bottom of the aquarium. The paint sludge mixed solution becomes odorous within a few weeks due to the abnormal growth of bacteria, so it is necessary to change the water in the paint booth at least once every three months. The waste liquid is generally outsourced to a designated disposal company as industrial waste.

However, in recent years, as the regulations for treating industrial waste have become stricter, the waste treatment area has been getting tighter day by day from the standpoint of nature conservation, which inevitably increases the waste treatment cost and increases the cost. I have a problem. Therefore, it is also known that the paint sludge mixed liquid in the water tank is filtered with a wire mesh and only the sludge is discarded, and the water is circulated to the water tank by a pump or the like for repeated use, but it cannot always be filtered efficiently. There was a problem.

[0005]

[Problems to be solved by the device]

 The present invention has been proposed in view of the above problems, and provides a filter device capable of efficiently filtering the waste liquid as described above, and a filter for a filter device suitable for such a filter device. The purpose is to provide.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention has the following configuration. That is, the filtering device according to the present invention has a structure in which the liquid to be filtered in the storage tank is guided to the filter via a pump, and an adjusting valve for adjusting the liquid supply amount from the pump to the filter is provided between the pump and the filter. And a discharge port for discharging a part of the liquid sent from the pump is provided between the adjusting valve and the pump, and the liquid flowing out from the discharge port is guided into the storage tank so that the inside of the storage tank It is characterized in that it is configured to stir the liquid. The filter for a filtering device according to the present invention is a sheet-shaped filter medium, a filter medium holding member having a substantially V-shaped cross section for storing and holding the filter medium, and the filter medium stored in the filter medium holding member. A fixed member, and a large number of liquid outflow holes are formed only on the surface of the filter medium holding member having a substantially V-shaped cross section, and the filtering of the sheet is performed on the inner surface of the surface having a substantially V-shaped cross section. A feature is that the filter material is arranged and the edge portion of the filter material is held by being sandwiched between the filter material fixing member and the inner surface of the filter material holding member.

[0007]

[Action]

 In the filtering device according to the present invention, since the adjusting valve for adjusting the liquid supply amount to the filter is interposed between the pump and the filter as described above, the liquid supply amount to the filter can be appropriately adjusted, and Since a discharge port for discharging a part of the sent liquid is provided and the liquid flowing out from the discharge port is guided into the storage tank to stir the liquid in the storage tank, the liquid in the storage tank is stirred. It becomes possible to efficiently guide the water to the pump and filter it efficiently. Further, the filter for a filtering device according to the present invention has a large number of liquid outflow holes formed only on the surface of the filter medium holding member which is substantially V-shaped as described above, and the inner surface of the surface which is substantially V-shaped in cross section. Since the filter material of the sheet is arranged on the inner surface of the filter material and the edge portion of the filter material is sandwiched between the filter material fixing member and the inner surface of the filter material holding member to be held, it is not necessary to sew. It is possible to use a sheet-shaped extremely simple filter medium.

[0008]

【Example】

 Hereinafter, the filtering device according to the present invention will be described in detail with reference to the embodiments shown in the drawings. FIG. 1 is a partially cutaway front view showing an embodiment of the filtration device according to the present invention, and FIG. 2 is a side view thereof. The filtering device A of the illustrated example has a filter housing chamber 2 provided on a gantry 1, a filter 3 is housed in the housing chamber 2 so that it can be freely taken in and out, and a liquid to be filtered from a storage tank or the like is stored in the filter 3 inside. The pump 4 that leads to the above is arranged under the gantry 2. In the figure, 5 is a motor for driving the pump 4, 6 is an inlet of the pump 4, 7 is a feed pipe from the pump 4 to the filter 3, and a filter is provided between the feed pipe 7 and the pump 4. An adjusting valve 8 such as a gate valve for adjusting the liquid supply amount to the pump 3 is provided, and a discharge port 9 is provided between the adjusting valve 8 and the pump 4.

As shown in FIG. 3, the filter 3 is a sheet-shaped filter medium 31 made of non-woven fabric, a filter medium holding member 32 having a substantially V-shaped cross section for accommodating and holding the filter medium 31, and the filter medium. The filter material fixing member 33 for fixing the filter material 31 housed in the material holding member 32.

As shown in FIG. 3, the filter medium holding member 32 has a large number of liquid outflow holes 34 formed only on the substantially V-shaped surface 32 a, and the above-mentioned sheet is formed on the inner surface of the substantially V-shaped surface 32 a. The filter material 31 in the shape of a circle is arranged. On the other hand, the filter medium fixing member 33 is composed of a pair of holding pieces 33b, 33b having a substantially inverted U-shaped cross section and both end portions of the holding pieces 33b, 33b, which are integrally formed via a central connecting portion 33a. A pair of substantially V-shaped pressing rods 33c integrally provided by welding or the like with the pressing rods 33c. The filter is sandwiched between the inner surface of the holding member and fixed, and the upper side edges of the filter medium 31 arranged in a V shape on the inner surface of the filter medium holding member 32 by the pressing piece 33b are used as opening edges of the upper face of the filter medium holding member. It is configured to be sandwiched between and fixed.

Further, on both side surfaces of the filter medium holding member 32, the filter 3 having the filter medium 31 housed and held in the holding member 32 as described above is housed and arranged in the filter housing chamber 2. A support member 35 is provided, and the support member 35 is placed on and removed from a pair of guide rails 11 and 11 provided on the inner surface of the filter housing chamber 2 as shown in FIG. In FIG. 2, 11a is a positioning stopper when the filter 3 is housed in the filter housing chamber 2, and 36 is a handle when the filter 3 is taken in and out.

A front door 12 for loading and unloading the filter 3 is attached to the front surface of the filter storage chamber 2 so as to be openable and closable by a hinge 13, and an upper lid 14 can be opened and closed by a hinge 15 on the upper surface of the storage chamber 2. Installed on. Reference numeral 16 is a handle for opening and closing the front door 12, and 17 is a buckle for closing the front door 12. Further, on the inner surface (lower surface) of the upper lid 16, a liquid amount detection sensor 18 for detecting the liquid surface of the liquid sent into the filter 3, and the filter 3 when the filter 3 is pulled out from the storage chamber 2 There is provided a U-shaped locking stopper 19 which prevents the sensor 18 from being hit and damaged.

When the liquid level of the liquid flowing into the filter 3 exceeds a predetermined limit, the liquid amount detection sensor 18 detects it and automatically stops the pump 4, and then the liquid in the filter 3 is removed. When the liquid level drops below a predetermined amount after being filtered, the pump 4 automatically operates and the liquid is supplied again into the filter 3, and when the liquid level does not drop below the predetermined amount even after a predetermined time elapses. The filter material 31 in the filter 3 is determined to be clogged, and a clogging alarm lamp or the like (not shown) is used to notify. Reference numeral 20 is a control box that houses these control devices.

Further, in the present embodiment, the locking stopper 19 is fixed together with the upper lid 14 by a mounting screw (not shown) of the handle 21 provided on the upper surface of the upper lid 14, and grips the handle 21. By opening the upper lid 14 upward, the stopper 19 moves upward so that the filter 3 can be taken in and out, and at the same time, the sensor 18 retreats above the filter 3 to prevent interference with the filter 3. Reference numeral 22 denotes a discharge port for discharging the liquid filtered by the filter 3 from the storage chamber 2. The liquid filtered by the filter 3 drops on the bottom plate 23 of the storage chamber 2 and is then discharged from the discharge port 22. It

FIG. 1 shows an example in which the filtering device A configured as described above is arranged in the vicinity of the water-washing type coating booth B to filter the sludge-containing liquid accumulated in the water tank 51 at the bottom of the booth. The suction port 6 of the pump 4 is connected to a suction pipe 52 provided in the water tank 51, the discharge port 9 is connected to a stirring feed pipe 53 via hoses 54 and 55, respectively, and the discharge port 22 is A hose 57 is connected to a pipe 56 for returning the water filtered by the filtering device 1 into the water tank 51. Reference numeral 58 is a strainer made of a perforated plate or a wire net provided at the end of the suction pipe 52 so as to cover the opening thereof.

In filtering the sludge-mixed liquid in the water tank 51 in the above-described configuration, first, an appropriate amount of a separating / aggregating agent is put into the water tank 51 to separate and agglomerate the paint sludge. Then, when the pump drive motor 5 is driven to operate the pump 4, the sludge mixed liquid in the water tank 51 is sucked into the pump 4 from the suction pipe 52 through the hose 54 and the suction port 6. At that time, large sludge, dust, and the like in the water tank 51 that are not separated and aggregated are captured by the strainer 58.

Next, the sludge-containing liquid sucked into the pump 4 is guided to the filter 3 via the feed pipe 7. In the present embodiment, the upper end portion 7a of the feed pipe 7 is opened at the upper center of the connecting portion 32a of the filter medium holding member 32, and the sludge mixed liquid dropped from the feed pipe 7 hits the connecting portion 32a and falls. The velocity is weakened and the fluid is gently poured into the filter 3 through the flow hole 37 formed in the edge of the connecting portion 32a or the connecting portion 32a. At that time, the amount of the sludge-mixed liquid flowing into the filter 3 can be adjusted by the adjusting valve 8 described above, and the excess sludge-mixed liquid squeezed by the adjusting valve 8 is discharged from the projecting port 9 to the hose 55. It is introduced into the water tank 51 through the agitation feed pipe 53, and the jet flow thereof agitates the sludge-mixed liquid in the water tank 51 so that it can be evenly filtered.

On the other hand, the sludge-mixed liquid that has flowed into the filter 3 is filtered by the sludge trapped by the filter material 31, and the filtered clean water is collected on the bottom plate 23 in the filter housing chamber 2. After dropping, it is returned from the discharge port 22 into the water tank 51 through the hose 57 and the pipe 56. At this time, the filter medium 31 is fixed by the filter medium fixing member 33 so that the edge portion is sandwiched between the filter medium holding member 32 and the inner surface of the filter medium holding member 32 as described above, and the filter medium holding member is hydraulically held. Since the sludge-mixed liquid is in close contact with the inner surface of 32, it does not leak from the outflow hole 34 without being filtered.

When the liquid level of the sludge-mixed liquid flowing into the filter 3 exceeds a predetermined limit, the liquid amount detection sensor 18 detects it and automatically stops the pump 4 to stop the sludge-mixed liquid. Are prevented from overflowing the filter 3. After that, when the sludge-mixed liquid in the filter 3 is filtered and the liquid level drops below a predetermined amount, the pump 4 automatically operates and the sludge-mixed liquid is supplied again into the filter 3 for a predetermined time. If the liquid level does not drop below the predetermined level, it is determined that the filter material 31 in the filter 3 is clogged, and a clogging alarm lamp or the like (not shown) is used to notify.

When the filter medium 31 is clogged, the front door 12 of the filter storage chamber 2 is opened, the filter 3 is pulled out along the guide rails 11 and 11, and the filter medium fixing member 33 is placed inside the filter medium holding member 32. If the filter medium holding member 32 is taken out from the container and turned upside down, the sludge and the filter medium 31 can be easily discharged. When the filter medium 2 is loaded again, the filter medium 31 and the like are washed with water as necessary, or replaced with a new one and set in the filter medium holding member 32, and the filter medium fixing member 33 is used. It suffices that the filter medium 31 is fixed and mounted in the filter chamber 2, and since the filter medium 31 is in the form of a sheet, it is extremely easy to take out, dispose of, and mount, and the above-mentioned work can be performed easily and quickly. is there.

The above embodiment has been described with reference to the case where the sludge-mixed liquid accumulated in the water tank 51 of the water-washing type coating booth B according to the present invention is filtered. It can also be applied to the case of filtering, and is particularly effective for filtering various industrial waste liquids.

[0022]

[Effect of device]

 As described above, in the filtering device according to the present invention, since the adjusting valve 8 for adjusting the liquid supply amount to the filter 3 is interposed between the pump 4 and the filter 3 as described above, The liquid supply amount can be adjusted appropriately, and a discharge port 9 for discharging a part of the liquid sent from the pump 4 is provided, and the liquid flowing out from the discharge port 9 is introduced into a reservoir tank such as a water tank 31 to store the liquid. Since the liquid in the tank is agitated, the liquid to be filtered in the storage tank can be uniformly filtered. Further, the filter for a filtering device according to the present invention has a large number of liquid outflow holes 34 formed only on the surface 32a of the filter medium holding member 32 having a substantially V-shaped cross section as described above, and has a substantially V-shaped cross section. Since the filter material 31 of the sheet is arranged on the inner surface of the surface 32a and the edge portion of the filter material 31 is sandwiched between the filter material fixing member 33 and the inner surface of the filter material holding member 32 to be held, the sewing is performed. It is possible to use the filter medium 31 having an extremely simple shape that does not require processing, and is advantageous in that it is easy to manufacture and the cost can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a filtration device according to the present invention.

FIG. 2 is a side view of the filtration device according to the above embodiment.

FIG. 3 is an exploded perspective view showing an example of a filter for a filtering device according to the present invention.

[Explanation of symbols]

 1 Stand 2 Filter Storage Room 3 Filter 4 Pump 8 Adjustment Valve 9 Discharge Port 31 Filtering Material 32 Filtering Material Holding Member 33 Filtering Material Fixing Member A Filtering Device B Coating Booth

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B05C 15/00 6804-4D

Claims (2)

[Scope of utility model registration request] 1. A configuration in which a liquid to be filtered in a storage tank is guided to a filter via a pump, and an adjusting valve for adjusting a liquid supply amount from the pump to the filter is interposed between the pump and the filter. A discharge port for discharging a part of the liquid sent from the pump is provided between the adjustment valve and the pump, and the liquid flowing out from the discharge port is guided into the storage tank to stir the liquid in the storage tank. A filtering device having the above structure. 2. A filter for filtering a liquid, a sheet-shaped filter medium, a filter medium holding member having a substantially V-shaped cross section for containing and holding the filter medium, and a filter medium housed in the filter medium holding member. And a filter material fixing member, wherein a large number of liquid outflow holes are formed only on a surface of the filter material holding member having a substantially V-shaped cross section, and the sheet is formed on the inner surface of the surface having a substantially V-shaped cross section. The filter for a filtration device, wherein the filter medium is arranged, and an edge portion of the filter medium is held by being sandwiched between the filter medium fixing member and the inner surface of the filter medium holding member.