JPH0647523Y2 - Cartridge filter for dry cleaner - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application This invention relates to a cartridge filter for a dry cleaner, more specifically, a replaceable dry cleaner, which is a contaminant in a solvent used in the dry cleaner, such as dust. The present invention relates to a cartridge filter for a dry cleaner that removes pigments, fatty acids and the like.

(B) Problems to be Solved by Conventional Techniques and Inventions A cartridge filter for a dry cleaner is, for example, disclosed in Japanese Utility Model Laid-Open No. 59-146015, on both end opening sides of an inner / outer double cylinder made of punching plates. Is closed with an end plate, an adsorbent (activated carbon, deoxidizing agent, dehydrating agent) is filled between the cylinders, and the outer peripheral surface of the outer cylinder is folded and impregnated with a phenol resin, urea / melamine resin. The element (made of filter paper or non-woven fabric) is integrally supported by the outer peripheral edge of the end plate. Usually, this cartridge filter is stored in a filter case and used, but at the time of use, the solvent first enters the inside of the filter case through the supply port, is filtered by the element, and is dyed by the adsorbent.
Fatty acids and the like are adsorbed and removed, and then discharged from the discharge port of the filter case.

Such an integrated cartridge filter is used a lot today because the solvent flow changes to the one without clogging when the element starts to be clogged and the adsorbent filled between the inner and outer cylinders can be used evenly. Has been done. However, if the element is clogged, the entire cartridge filter must be replaced. However, as the solvent used in the dry cleaner, a hydrocarbon mixture of petroleum-based solvent, barchloren ethylene (tetrachloroethylene) of chlorine-based solvent, 1,1,1-trichloroethane and 1,1,2- There are mainly four types of trichloro-1,2,2-trifluoroethane (Freon 113). Of these, those excluding hydrocarbon mixtures of petroleum solvents are used after When the cartridge filter is discarded, it is necessary to recover the solvent adsorbed in the adsorbent, and usually the solvent is recovered using a distillation pot or other suitable solvent recovery device. However, even when these distillation pots or solvent recovery devices are used, the recovery of the solvent from the adsorbent is not necessarily good if the adsorbent is not taken out from the filter. Moreover, since October 1, 1991, carbon tetrachloride, trichloroethylene, and tetrachloroethylene have been designated as Class II specified chemical substances, the recovery of the adsorbent from the cartridge filter cannot be avoided.

However, since the conventional integrated cartridge filter is extremely tough so that the adsorbent does not leak due to the pressure applied during use, the adsorbent cannot be easily taken out from the filter. .

The present invention has been made in view of these circumstances, and makes it possible to easily take out the adsorbent from the inside of the filter at the stage of disposal so that the solvent can be recovered with the adsorbent separated from the filter. The purpose is to provide a cartridge filter for a dry cleaner that can be disposed of with less pollution.

(C) Means for Solving the Problem and Its Action The present invention has two cylindrical bodies that have a large number of through holes and are coaxially arranged inside and outside, respectively, and openings at both ends of these cylindrical bodies. A pair of end plates provided on the side, an adsorbent filled in a part surrounded by the end plates and the two tubular bodies, and on the outer periphery of the outer tubular body, on the outer peripheral edge of the end plate. In a dry filter cartridge filter for removing contaminants from the solvent by allowing the solvent to pass through the element and the adsorbent, a pair of upper and lower end plates has an outer cylindrical shape. A certain cut line is provided slightly inside the opening edge of the body, and this cut line is completely cut when the cartridge filter is discarded (a plurality of connecting parts are cut off at once), and along the cut line. Opening The entire adsorbent can be punched out and taken out together with the inner cylinder. For example, if you hit the lower end plate first with a hammer, turn it over and hit the upper end plate strongly with a hammer, the center part of the upper end plate will be punched out, but at the same time the impact will fall through the inside. Since it is transmitted to the end plate on the side and the central portion of the lower end plate is also punched along the lower cut line provided on the end plate, all of the adsorbent can be knocked down at a stretch.

In the present invention, the cut line is formed in a substantially annular shape coaxial with the tubular body except for a plurality of connectable portions which can be cut off for each of the pair of upper and lower end plates. It is preferable that the end plate has a thickness of 0.2 to 0.6 mm and the shortest distance is 3 to 8 mm. Such a cut line is formed along the small inner side of the opening edge of the cylindrical body on the outer side of the upper and lower end plates.

(D) Embodiments The present invention will be described in detail based on the embodiments shown in the drawings. The invention is not limited to this.

1 to 3, a dry cleaner cartridge filter 1 includes an inner / outer double cylinder 2 and 3 made of a punching plate, an element 4 arranged on an outer peripheral surface of the outer cylinder 3, and two of these elements. Upper and lower end plates 5 and 6 for closing and supporting the open ends of the heavy cylinder and the element 4 and an adsorbent filled in the annular space surrounded by the both end plates and the double cylinders 2 and 3 ( It is mainly composed of activated carbon, deoxidizing agent, dehydrating agent) 7.

The upper and lower end plates 5 and 6 are formed with annular recessed grooves 8 which have both an element setting action and a plate reinforcing action, and also on a circumference slightly smaller than the outer diameter of the outer cylinder 3, that is, the outer cylinder 3 Four arc-shaped cut lines 9 are separated by a minimum distance of about 5 mm from the opening edge of the inside of the connecting edge 10 (around 5 mm from the outside) ), Is formed in a ring shape.

The number of cut lines 9 provided on each end plate and the connecting portion
The width dimension of 10 is not limited to the case of the above embodiment, and may be changed according to the size and plate thickness of each end plate.

The end plates 5 and 6 are provided with a cut line 9 on a circumference smaller than the outer diameter of the outer cylinder 3, and an opening is formed along the cut line 9, so that the adsorbent 7 is integrated with the inner cylinder 2. The solvent can be taken out in one operation, and the solvent can be easily and reliably recovered from the cartridge filter 1 after use. Between the upper end plate 5 and the inner / outer double cylinders 2 and 3, a felt 11 is inserted which is slightly larger than the diameter of the arc-shaped cut line 9, and the adsorbent leaks from the cut line 9 portion. It prevents it from coming out.

Thus, when the connecting portions of the cut lines of the upper and lower end plates 5 and 6 are cut off, almost the entire adsorbent can be punched out and taken out from the cartridge filter 1, and the adsorbent can be taken out very easily.

The element 4 arranged on the outer peripheral surface of the outer cylinder 3 is formed by folding a filter paper or a non-woven fabric using a polyester resin. The element 4 when a non-woven fabric is used is manufactured as follows.

First, a fiber of a spun polyester resin is impregnated with a urea / melamine resin and a resin of Beckamine Mu-100 (manufactured by Dainippon Ink and Chemicals, Inc.) and dried to form a non-woven fabric as a base fabric.

Then, this nonwoven fabric is pleated by an automatic pleating machine to form a zigzag folded pleat shape, and dried (curing) in a drying oven (about 120 to 180 ° C.) to obtain an element.

The obtained element 4 is fitted on the outer peripheral surface of the outer cylinder 3, and the upper and lower ends thereof are held by the upper end plate 5 and the lower end plate 6.

As shown in FIGS. 4 to 5, one dry filter cartridge filter 1 for a dry cleaner having the above-mentioned configuration is attached to the dry cleaner 12 depending on the size of the apparatus. That is, the dry cleaner 12 includes a drum 13 that rotates at high speed in a washing tub 14, and the washing tub 14 has a tank.
A solvent supply line 16 and a drainage line 17 connected to 15 are connected, and a dry air circulation line (not shown) having a heater and a cooler (not shown) is connected, and the liquid supply line 16 is replaced. Cartridge filters 1, 1 are provided as possible. In addition, 18 is a pump for circulating the solvent, 19 is an automatic soap dispenser,
20 is a soap tank, and 21 is a control unit.

In FIG. 5, 22, 23, and 24 are ring-shaped packings, 25 is a discharge pipe that penetrates the inner cylinders 2 and 2 of the two cartridge filters 1, 1, 26 is a bolt, 27 is a pressing plate, 28 is a nut, And
29 is a case for accommodating the cartridge filters 1 and 1.

In the dry cleaner 12, the solvent is moved from the tank 15 to the cartridge filter 1 in the case 29 by the operation of the pump 18.
When it is circulated in the drum 13 through 1 and dust is clogged to increase the filter pressure, the control unit 21 detects that the circulation flow rate has decreased to a predetermined value, and an indicator lamp (not shown) is turned on as appropriate. Cartridge filter
The need to replace 1,1 is alerted. However, in these cartridge filters 1, 1, when the element 4 is clogged, the flow of the solvent is changed to a non-clogging direction, and the adsorbent 7 filled between the inner and outer double cylinders 2 and 3 is evenly distributed. Since it can be used, it has a long life as compared with a conventional phenol resin impregnated filter, and therefore the cost is easy and the number of conversions is small.

Solvent recovery from the cartridge filter 1 replaced by clogging is performed as follows.

When the cartridge filter 1 taken out from the case 29 is placed in a vertical state as shown in FIG. 1 and the inside of the cut line 9 of the upper end plate 5 is tapped with, for example, a hammer, the connecting portion 10
Then, an opening along the cut line 9 is easily formed in the upper and lower end plates 5 and 6, and the adsorbent 7 is easily detached together with the inner cylinder 2 through this opening portion.

Therefore, when the filter 4 part and the adsorbent 7 are put in the distillation pot or the solvent recovery device, the solvent recovery rate is significantly improved compared to the conventional case where the solvent recovery is performed without separating the two. It is possible to eliminate the risk of pollution problems in the disposal after the solvent recovery. In addition, those that burn the cartridge filter 1 through the openings formed in the end plates (adsorbent 7, element 4, felt 11) and those that do not burn (inner and outer double cylinders 2, 3, upper and lower plates 5, 6) Since they are separated into two and are made easy to handle, collection work and disposal work after collection can be performed efficiently, and the cost required for disposal can be significantly reduced.

(E) Effect of the Invention According to this invention, since the pair of end plates having the cut lines that can be punched out is used, the adsorbent is discharged from the opening formed in the end plates in the disposal process of the cartridge filter. Can be punched out and taken out, and the solvent can be recovered in a state in which the adsorbent is separated, whereby the recovery efficiency can be greatly improved and the risk of pollution problems can be eliminated.

Further, since the integrated cartridge filter is separated and easily taken, the solvent recovery work and the waste work of the filter after the recovery can be efficiently performed with a small amount of manpower and cost.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of an embodiment of the present invention, FIG. 2 is a partially cutaway plan view, and FIG. 3 is an enlarged vertical section of its essential portion. Drawing, FIG. 4 is a functional explanatory view showing an example of a dry cleaner using the embodiment, and FIG. 5 is an enlarged view of a main part thereof. DESCRIPTION OF SYMBOLS 1 ... Cartridge filter, 2 ... Inner cylinder, 3 ... Outer cylinder, 4 ... Element, 5 ... Upper end plate, 6 ... Lower end plate, 7 ... Adsorbent, 9 ... Cut line, 10 ... Connection part.

Claims (1)

[Scope of utility model registration request] 1. A cylindrical body having a large number of through-holes and arranged coaxially inside and outside, and a pair of end plates provided on both end opening sides of these cylindrical bodies, An adsorbent filled in a portion surrounded by the end plate and the two tubular bodies, and an element disposed while being supported by the outer peripheral edge of the end plate on the outer periphery of the outer tubular body, In a cartridge filter for a dry cleaner that removes contaminants from the solvent by passing the solvent through the element and the adsorbent, a pair of end plates is struck along the inner side of the opening edge of the outer cylindrical body. A cartridge filter for a dry cleaner, each of which is provided with a suction-removal cutting line that is cut in a substantially ring shape coaxial with a tubular body except for a plurality of connectable portions.