WO1993010302A1 - Dry cleaning machine with cartridge filter purifying mechanism - Google Patents

Abstract

A dry cleaning machine wherein a purifying mechanism provided with a filter device using a cartridge filter (33) between a solvent tank and a washing tank, and a drying mechanism for circulating clean hot air through the washing tank are assembled thereinto, said both mechanisms constituting circuits independent of each other, wherein the hot air from the drying mechanism is delivered through solvent inlets (31) of the filter device (3), so that the filter device (3) can selectively form a purifying mechanism which bypasses the washing tank (1) and the solvent tank (2).

Description

 Ming fm Dry cleaning machine with cartridge filter purification mechanism

 The present invention uses a cartridge type filter incorporated in a dry cleaning machine for a predetermined period of time continuously, and when the filter begins to interfere with the filter function, does not replace the filters and replaces the filter with a dry cleaning machine. A dry cleaning machine with a cartridge filter cleaning mechanism with a new structure that enables the collection of harmful solvents remaining in the filter and the cleaning of the filter itself while retaining the filter inside the built-in filter. It is intended to be provided. Background technology

 As a result of the development of various substances that enhance the cleaning effect, in the current cleaning equipment, both organic solvents and petroleum-based solvents with relatively high flash points are combined with non-combustible compounds such as barchlorethylene and trichloroethane. The use of bulk solvents, which are solvents and fluorine-based solvents, is increasing.

 In dry cleaning using these solvents, unlike water used in washing with water, the solvent itself is expensive, so solvents that have been used once and contaminated once need to be cleaned by a filtration device built into the equipment each time. After passing through to remove insoluble dust etc. and clean it, it is returned to the dish, and if the soluble dirt accumulates in the solvent beyond a certain limit, the cartridge can no longer be used. You will have to replace it with a new cartridge.

The maximum amount of solvent that can be used repeatedly is one wash per machine. Normally when it is about 30 kg? Up to about 800 times, after which the filter for removing insoluble dust may become clogged and interfere with the cleaning effect, so it is necessary to replace the filter .

 This filter has a cylindrical shape in which an adsorbent such as activated carbon is loaded in the space around the core pipe and the outer peripheral surface is covered with a water-permeable sheet such as Japanese paper or nonwoven fabric. It is formed in a power cartridge type that can be freely inserted into and removed from the cleaning device of the cleaning machine.

 Filters that have clogged and are no longer capable of functioning have accumulated unacceptably large amounts of insoluble dust that has fallen off of laundry and at the same time impregnated and retained solvent, and are usually used unused filters. The weight of the filter (for 30 kg / washing operation) is about 15 kg, whereas the weight of the filter that can no longer perform its function reaches about 45 kg, and this condition is reached. This means that the filter is filled with as much as 30 kg of insoluble dust and solvent.

 Looking at the breakdown of the residue of up to 3 O kg in the above example, it was found that about 5 ftg was insoluble dust and the remaining 25 kg was solvent. Filters that have lost the filtration function while leaving a large amount of solvent remaining are not only uneconomical of simply discarding the solvent, but also the solvent 7: 'a certain perchloreethylene Because it is designated as a hazardous substance, it must be transported and incinerated by specialists and must be disposed of in an inconvenient manner.

In fact, in some regions, there are no recovery companies that process these specialty products.For example, in the case of Yamagata Prefecture, it is necessary to rely on a specific specialized company in Niigata Prefecture. That time The collection cost is 180 yen / ^ (45 X 180 = 8100 yen in the above example), so especially in large-scale cleaning shops that use a lot of money However, in addition to cumbersome handling, the burden is not negligible in terms of cost.

 Therefore, in order to cope with such a situation, the applicant of the present invention has already disclosed the invention of Japanese Patent Application No. 3-166621 in the dry cleaning machine as it is in the transmission device incorporated in the dry cleaning machine. Purification is possible with the cartridge filter kept in place, making it even easier to purify the cartridge filter and improving the efficiency of the already installed dry cleaning machine. By using a part of the structure, the economic burden is reduced as much as possible, the solvent remaining in the filter is almost completely recovered and the harmful substances are eliminated, and as a result the filter The overall weight has been reduced as much as possible, significantly reducing the expense that had to be paid to specialized collectors.

 The present invention is a invention which is in tandem with the technical idea of the above-mentioned invention, and provides a dry cleaning machine with a cartridge filter purifying mechanism having a novel configuration capable of achieving substantially the same object. Trying to do it. Disclosure of the invention

 As can be understood from the typical embodiment shown in the drawings, the dry cleaning machine with a power filter filter purifying mechanism of the present invention basically has the following configuration.

That is, a cleaning mechanism in which a filtration device using a cartridge filter is arranged between the solvent tank and the washing tank, and clean hot air circulating in the washing tank. In a dry cleaning machine in which the drying mechanism to be recirculated is incorporated in an independent circuit, the solvent inlet side of the cleaning device is connected to the solvent tank, and the hot air is sent out from the drying mechanism to the outlet side. Switch directly to the hot air inlet and switch the solvent outlet side of the filter to the hot air outlet directly connected to the inlet of the drying mechanism. The feeding device selectively forms a dry cleaning machine with a cartridge filter purifying mechanism in which the filtering device forms a purifying mechanism that does not pass through the washing tub and the solvent tank.

 The cleaning mechanism used in the most common dry cleaning machines these days pumps up the solvent in the solvent tank; frees the filter, removes dirt and dirt in the solvent, To remove the dirt from the laundry with the solvent, collect it in a button trap to settle the solid foreign substances, and then return the solvent to the solvent tank again. In general, a circuit in which the solvent is forcibly circulated according to the arrow is configured as an independent circuit without being connected to a circuit for a drying mechanism described later. All the corresponding cleaning mechanisms can be the subject of the present invention.

In recent years, the filter in this mechanism has a plurality of disposable cut-out filters, which are connected in series in each pressure tank and are connected in series by respective core pipes. In addition, impurities are removed in the process of being sent into the core pipe from the outer periphery of the filter. The number of pressure tanks used and the number of cut-out filters installed in the pressure tanks can be appropriately determined at the design stage according to the cleaning capacity of Dry I; What is decided, constant It goes without saying that it is not.

 The drying mechanism usually travels from the washing tub to a dust filter, a fan for forced circulation, a cooling spot for solvent recovery, and a heating spot that evaporates the solvent and creates hot air to dry the clothes. The part corresponding to the hatched pipe part shown in Fig. 4 was returned to the air flow containing the solvent released from the laundry by following the arrows, and the solvent R was separated and recovered from those air flows. Most commonly, it is configured independently as a circuit that continuously circulates the hot air produced by ripening the clean airflow after aging, and individual devices, that is, dust filters The structure, function, number of combinations, etc. of the fan, cooling spot, heating spot, and associated equipment can be freely designed as appropriate. All common drying mechanisms, including those described above, are included in the drying mechanism of the present invention.

 In an existing dry-cleaning machine that incorporates a washing mechanism and a drying mechanism as described above, the purifying mechanism of the cartridge filter shuts off the solvent inlet side of the cleaning device from the solvent tank, Directly connected to the hot air outlet from the drying mechanism and switched to the hot air inlet, and the solvent outlet of the filtration device was switched to the hot air outlet directly connected to the drying device inlet, and the core pipe was connected inside the filtration device. It is formed by selectively realizing a circuit in which hot air from a dryer is sent from the outer periphery of the cartridge filters arranged in series to the core pipe.

In order to realize the above purification mechanism by switching, in the existing dry cleaning machine, each of the harmful cleaning mechanism and the drying mechanism, which are formed as independent circuits, is provided between predetermined portions, that is, First, the first point is that the cleaning mechanism Wash in the middle of the circuit to the solvent inlet side of the equipment (the solvent inlet side which is the furthest from the solvent tank if a filter is installed) and in the drying mechanism from the outlet of the heated spot. The circuit A for easy connection to the middle of the circuit (hot air outlet side) leading to the tub, and the second point is the middle of the circuit from the washing machine to the washing tub in the washing mechanism. (The solvent outlet side of the device) and the drying mechanism in the middle of the circuit from the washing tank to the drying mechanism inlet side.

B must be provided.

 In addition, each of the connection circuits A and B is connected to a circuit constituting a cleaning mechanism and a circuit constituting a drying mechanism in combination with a known switching device such as a valve and a damper. That is, in the case of the connection circuit A, a circuit that branches into a switching device on the side that does not reach the washing tub, among switching devices provided in parallel in the circuit from the hot air sending side of the drying mechanism to the washing tub, Connect the switching device from the solvent tank of the washing mechanism to the solvent inlet side of the filtration unit (if the filtration unit is installed, the solvent inlet side of the filtration unit farthest from the solvent tank). However, this switching device must be paired with another switching device in a position where the solvent tank can be completely shut off from the solvent inlet side of the filtration device. Rai.

 On the other hand, in the case of the gun contacting circuit B, a circuit that branches to a switching device on the side that does not reach the washing basin among switching devices provided in parallel in the circuit from the transmission device to the washing basin, The switching device must be connected in the middle of the circuit from the washing tub to the entrance of the drying mechanism, and be combined with another switching device at the connection point where the washing tub crosses. .

The oxidizing mechanism formed in this way includes a cartridge in the filtration device. η To distill impurities discharged during the purification process of the filter, to separate and recover only the solvent from the water from the solvent solution recovered by the piping and installed distillation tank below the filtration device, and the cooling spot. Pipes below the cooling spot and a water separator (having a water recovery tank and solvent recovery ellipse) to be installed must be included. The solvent recovered in the solvent recovery tank of the water separator is connected directly to the solvent recovery tank by piping and connecting it to the solvent tank, and the solvent is recovered indirectly from the solvent recovery tank. Whether to transfer to the solvent tank may be appropriately selected.

 In the dry cleaning machine with the purification mechanism of the present invention formed as described above, the connection circuit Α and the connection circuit Β are incorporated together with each switching device, and the switching devices a, c, d, and f are closed, and the other By performing the operation of opening the switching devices b and e, the filtering device can be realized by:-realizing a cartridge filter purification circuit as shown in Fig. 1 without passing through the washing tub and the solvent tank. become. It should be noted that the dry cleaning machine of the present invention incorporates all of the above-described components in advance and is formed as a newly installed dry cleaning machine, but is an existing dry cleaning machine and employs a cartridge filter. It also includes one in which a dry cleaning machine having a purification mechanism having a filtration device and a drying mechanism separate from the cleaning mechanism is appropriately modified and connected.

Also, the drying mechanism, that is, the circuit from the washing tub to the dust filter, the fan for forced circulation, the cooling spot for solvent recovery, and the heating spot for evaporating the solvent and producing hot air for drying the clothes. The machine is formed as a separate unit from the so-called conventional drying mechanism for drying the laundry, which is connected to the washing basin.よ う な よ う な An S structure is also included in the dry cleaning apparatus of the present invention, and a dry cleaning machine capable of efficiently performing a cleaning operation of the cartridge filter is realized. BRIEF DESCRIPTION OF THE FIGURES

 FIG. 1 is a circuit diagram showing a circuit in a state where a purification mechanism of the present invention is configured. FIG. 2 is an enlarged cross-sectional view of a main part showing only a filtration device in the purification mechanism. FIG. 3 is a cleaning mechanism of the present invention. FIG. 4 is a circuit diagram showing a circuit in a state in which the drying mechanism of the present invention is formed. In order to help understand the drawings, if the symbols are explained in advance,

1 Washing basket

 1 1 Same button trap

 2 Solvent tank

 2 1 Same pump

 3 Filtering device

 3 1 Solvent inlet side

 3 2 Solvent outlet side

 3 3 Same cartridge filter

 3 4 Same core pie

 3 5 Same packing material

 3 6 Sealed door

 3 7 Same pressure tank

 4 dust filter

 5 Forced fan

 6 Cooling spot

 7 Heating spot

8 Waste liquid tank 9 Moisture separator

 9 1 Water recovery tank

 9 2 Solvent recovery tank

 A Connection circuit

 B Connection circuit

 C short circuit

 D laundry

 M dry cleaning machine

 R solvent

 W water

 a to i switching device

BEST MODE FOR CARRYING OUT THE INVENTION

 In order to deepen the understanding of the present invention having the above-described configuration as a gist, the dry cleaning machine M of the present invention will be described below more specifically with respect to an embodiment representative of the present invention shown in the drawings.

 As can be understood from the circuit diagrams shown in FIGS. 1, 2, and 3, the dry cleaning machine with a cartridge filter purifying mechanism of the present invention includes a pump 2 around a washing tub 1. 2 Solvent tank 2 with 1 and 3 cartridge filters 3 3 Filter devices 3 connected in series 2 units in parallel arrangement, Dust filter 4 as a dryer, Fan 5 for forced circulation, Solvent recovery The cooling spot 6, the heating spot 7 that evaporates the solvent R and creates hot air for drying clothes, and the cartridge filter 3 3, 3 3,

Distillation tank 8 for distilling waste liquid discharged when purifying ……. Separation and recovery of solvent R contained in hot air when operating the purification mechanism A water separator 9 is installed and connected as follows.

 First, the solvent tank 2 is disposed below the washing basin 1 via a button trap 11, and activates a washing mechanism to retain a predetermined amount of the solvent R when washing clothes in the washing tub 1. .

 The filtration devices 3 and 3 are connected at their solvent inlet sides 31 and 31 to the rush line between the valve c on the pump 21 side of the solvent tank 2 and the valve b on the connection circuit A side, and The outlets 32, 32 are connected to valves d, e, which are both provided in parallel.

 A dust filter 4, a fan 5 for forced circulation, a cooling spot 6 for solvent recovery, a heating spot 7 for creating hot air, and a dust filter 4 connected in series in this order Along the way, valve f is connected to washing tub 1 by connecting S and piping, and connection circuit B is connected to a position closer to dust filter 4 than valve f. By branching and connecting to the valves a and b provided in parallel, connecting the valve a side to the irrigation tub 1, and returning to the washing tub 1 from the washing tub 1 via each device of the drying mechanism by connecting S pipe Configure the circuit for the drying mechanism.

 The cleaning circuit A is connected to the solvent tank 2 in the cleaning mechanism via a valve b branched from the ripening spot 7 on the hot-air sending side in the circuit for the drying mechanism described above, and the filtration apparatus 3, 3 It is connected and piped as a conduit from the solvent tank 2 to the solvent inlet side 31 of the filtration device 3 which is the most infiltrated filtration device.

The connection circuit B is connected to the washing tub through the switching devices d and e provided in parallel in the circuit from the filtration device 3 to the washing tub 1 and the switching device e on the side not reaching the irrigation tub 1. It is connected and plumbed as a circuit from the point 1 to the middle of the circuit from the entrance of the drying mechanism. It is formed by combining the switching device f at a position near the washing basin 1 in the place.

 In this embodiment, a switching device g by means of a damper is incorporated in front of a connection point which is connected in the middle of a circuit connecting the washing basin 1 to the entrance of the drying mechanism, and a switching device g is provided in front of the switching device g. In this example, a short circuit C is connected from the middle of the circuit connecting the dust filter 14 in the drying mechanism and the fan 5 for forced circulation.

 The distillation tank 8 is connected to and connected to a pipe below the filtration device 3 with a valve h arranged from the bottom thereof.

 The water separator 9 is configured to separate and collect the water according to the specific gravity difference between the solvent R and the water W. The upper side of the water separator 9 is connected to a water tank 91, and the lower side thereof is connected to a solvent tank 92, and piping is performed. By connecting the piping to the solvent tank 2 by disposing the valve 92 with the valve i, the solvent R recovered in the solvent tank 92 is directly returned to the solvent tank 2.

First, in order to operate the washing mechanism for washing clothes by the dry cleaning machine M of this embodiment constituted by the above circuit, all the switching devices of the valves a, b, e, f, and h are closed, After opening the other switching device, the solvent R from the solvent tank 2 is pumped up by the pump 21 and the solvent inlet side 3 1 of the filtration device 3 is opened via the opened valve c. From the filter outlets 32, 33, 33,..., And the impurities are removed in the process of passing through the core pipe 34 at the center of the filter, and are taken out from the solvent outlet 32 of the filtration device, and the valve is closed. Solvent R cannot pass through connection circuit B due to e, is sent to washing basin 1 through open valve d, removes dirt on clothes C in washing ellipse 1, and then traps the button. 1 Solvent tank with solid foreign matter separated in 1 as solvent R Go back to 2 and pump up again And then repeat the same cycle as above to wash clothes C. In Fig. 3, the beautifully designed pipes move around as indicated by the arrows. It is a circuit to configure. Next, by closing the switching devices of valves b, d, e and damper g (c and h are in this case no stakeholder) and opening the other switching devices, the hatched lines shown in Fig. 4 are obtained. A drying mechanism is configured in which hot air moves along the piping section following the arrows.At the cooling spot, the hot air containing the solvent is cooled and turned into a solvent solution, sent to the water separator 9, and separated from the water W. The used solvent I is returned from the solvent tank 92 (or released as appropriate) from the solvent tank 92 to the solvent tank 2.

 Thus, while the dry cleaning machine M of this embodiment alternately selects and operates the cleaning mechanism and the drying mechanism, and repeatedly repeats the cleaning of the clothes C, the force cartridge filter in the overload S 3 gradually increases. One, three, three, three, ... one of the cartridge filters 33, 33, three, ... at a suitable time when there is a limit to one of the transfer functions and there is a danger of impairing cleaning.沪 止 め 状態 に 実 施 実 施 実 施 実 施 実 施 実 施.

The purifying mechanism of the cartridge filters 33, 33, ... in the case of the dry cleaning machine M shown in the embodiment, was created at the heating spot 7 according to the arrows in the circuit section with dot seeding display and wavy line display in Fig. 1. The hot air is circulated.By closing the switching devices for valves a, c, d and damper g and opening other switching devices, the drying mechanism is connected to the filtration device 3 on the cleaning mechanism side. The filter is connected through circuits A and B, and the solvent inlet side 31 of the filtration device 3 is changed to a ripening air inlet, and the solvent outlet side 32 is changed to a hot air outlet, and the ripening air is converted to a cartridge filter 3 3.3 3 3 …… It becomes possible to pass through, and the cartridge filters 33, 33, …… And

 The flow of the hot air in the filtration device 3 is shown in an enlarged sectional view of a main part in FIG. That is, the three power filters 33, 33, 33, which have deteriorated or eliminated the transmission function, are connected via the joint packings 35, 35,.... As a result, the core pipes 34, 34, ... are connected in series in a serial manner, and are hermetically closed and accommodated in the filtration device 3. As described above, the hot air is transformed into a hot air intake. Originally, it is fed into the filtration device 3 through the solvent inlet side 31, and is sent from the outer periphery of the cartridge filters 33, 33, 33 toward the core pipes 34, 34,. Originally, in the process of exiting from the solvent outlet side 32), hot air evaporates the solvent R remaining in the cartridge filters 33, 33, 33, and passes through the connection circuit B. Guided to the drying mechanism side, liquefied by the cooling spot 6 to form a solvent solution After the moisture separator 9. Subsequently led, referred for reuse as a solvent R.

 In this process, if various impurities that have been stabbed in the cleaning process are released from the cartridge filters 33, 33, 33 in the filtration device 3, and flow into the filtration device 3, It is guided to the distillation tank 8 via the opened valve h and collected.

In this embodiment, the hot air containing the vaporized solvent flowing into the connection circuit B from the filtration device 3 via the valve e passes through the short circuit c by the closed damper g, and is incorporated in the drying mechanism. A configuration is adopted in which the fan 5 goes to the cooling spot 6 without passing through the dust filter 4 to improve the circulation efficiency for purification, but this short circuit C is always required. (Therefore, the switching device for the damper g is not installed), and the purifier should be made so that the connection circuit B passes through the dust filter 14 Of course, it is also possible. Industrial applicability

 The cleaning machine of the present invention having the above-described configuration can use the circuits constituting the cleaning mechanism and the drying mechanism for realizing the original functions as they are, and selectively connect and use the necessary parts thereof. In this way, the purifying mechanism is realized, and the force cartridge filter 3 3. 3 3...--Enclosed in the filtration device 3 is purified without removing it from the iF filtration device 3 at all. It is not only possible to greatly increase the work efficiency compared to the case of using a purification device prepared separately from the conventional cleaning machine, but also to improve the efficiency of the cartridge filter. It is an excellent product that can completely eliminate the danger of spills of hazardous substances during removal and removal of 3, 1, ... Then, the dry cleaning machine M of the present invention is a cleaning mechanism and a drying mechanism originally provided in the dry cleaning machine, in the cleaning mechanism; Since these mechanisms can be used as they are, not only the configuration of the present invention can be utilized as a newly manufactured dry cleaning machine, but also the conventional cartridge filters 33, 33, ……. However, the present invention can be utilized by improving and repairing an existing dry cleaning machine so that a purifying mechanism that can be selected and used as appropriate according to the present invention is realized, and the cost required for the cleaning is also new. The economic effects are far more dramatic than in the case where the equipment is introduced as a simple facility. It becomes no.

Moreover, regarding the selective switching, particularly, As shown in, a short circuit C is added to the connection circuits A and B, and switching devices such as valves or dampers a to i required to select and use those circuits A, B, and C In the case of using the combination of the cleaning mechanism and the cleaning mechanism, the original cleaning mechanism and drying mechanism can exhibit the superior characteristics in improving the circulation efficiency when the purification mechanism is activated. Can shorten the time required to interrupt the cleaning work, which can have an advantageous effect on the economic effect. Recruitment at a mobile phone store is also possible.

 As described above, according to the cleaning machine of the present invention, the handling of harmful designated solvents that are indispensable to the cleaning industry is extremely safe so as to be incomparable to conventional ones. In addition, the purification efficiency can be improved compared to the one proposed by the applicant of the present application, and in addition to recovering and reusing expensive harmful designated solvents, the lifetime of the cartridge filter itself can be improved. It has great economical advantages, such as being able to prolong life and utilizing the conventional dry cleaning machine M, especially in areas far from the center where it is inconvenient to contact with specialized collection companies. It is a very advantageous device for cleaning businesses that open, and it is expected that these people will be particularly appreciated.

Claims

Scope of request The washing mechanism, which has a filter device that easily uses a cartridge filter for the solvent tank and the washing tank, and the drying mechanism, which circulates clean hot air through the washing tub, are independent circuits. In the built-in dry cleaning machine, the solvent inlet side of the cleaning device of the cleaning mechanism is shut off from the solvent tank, and is directly connected to the hot air outlet port of the drying mechanism to switch to the hot air inlet. The solvent outlet of the filtration unit is connected directly to the drying unit inlet side and switched to the hot air outlet, and the hot air from the drying unit is sent into the filtration unit where the cartridge filter is installed, so that the iF filter can be selectively selected. A dry cleaning machine with a cartridge filter purifying mechanism in which the device forms a purifying mechanism that does not pass through the washing tub and the solvent tank.  A cleaning machine with a filtration device between the solvent tank and the washing tub and a drying mechanism to circulate clean hot air into the irrigation tank are built in independent circuits. In the dry cleaning machine, the solvent inlet of the cleaning device is shut off from the solvent tank, and then directly connected to the hot air discharge port side of the drying device installed separately from the drying mechanism of the dry cleaning machine. And switch to the hot air outlet by directly connecting the solvent outlet side of the filtration unit to the inlet side of the drying unit separately installed in the filtration unit. By sending hot air from a drying unit that is provided separately from the drying unit of the dry cleaning machine, the filtration unit can selectively provide a cleaning mechanism that does not pass through the washing tub and the solvent tank. Cartridge filter cleaning mechanism with a dry cleaning machine was as to formed.