JP3008993U - Circulation filtration and recovery device for dry cleaning solvent - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] A filter cleaning device that efficiently cleans the filter board and traps contaminants, and a solvent that is used by filtering and storing the solvent in a dry cleaning machine for reuse In combination with a recovery device, the amount of pollutant waste is reduced as much as possible. [Structure] The filter 1 and the dry cleaning machine are connected by a supply pipe 5 and a return pipe 8, and the supply pipe 5
The in-side electromagnetic valve 7 and the out-side electromagnetic valve 9 of the return pipe 8 are opened, and the solvent from the dry cleaning machine is circulated through the filter board 3 and the center pipe 2. After the dry cleaning is completed, the in-side and out-side electromagnetic valves 7 and 9 are closed, the spin motor 10 is rotated, and the filter board 3 in the filter 1 is rotated to remove contaminants. Next, the out-side solenoid valve 9 was opened, and a filter cleaning device was provided in which the pollutants along with the solvent flowing back from the dry cleaning machine were discharged to the filter bag 14 through the drain pipe 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention has a filtration and circulation device that uses perchlorethylene or a petroleum solvent (hereinafter simply referred to as a solvent) used for dry cleaning to a filter while it is in operation and is used while being filtered. After a certain period of time, a combination of a solvent filter cleaning device that cleans the filter disk inside the filter to improve filtration efficiency and a solvent recovery device that removes the dirt trapped on the filter disk and recovers the solvent are combined. Circulation filtration and recovery device for cleaning solvent

[0002]

[Prior art]

 Conventionally, in dry cleaning, a method has been adopted in which the solvent is continuously filtered and washed by a filter. Therefore, the solvent in the dry cleaning machine is constantly supplied to the filter machine by the pump, and after removing solid dirt, it is returned to the dry cleaning machine again.

[0003] Diatomaceous earth and cartridge filters are known as filtration devices for solvents used in dry cleaning, but all of them are prone to clogging due to dirt and have a high frequency of replacement of filtration media, so that they are used in waste treatment. There was a problem. Although the recent spin disk filter type filter has the effect of significantly reducing waste, it can be easily installed in the perchlorethylene dry cleaning machine that has a solvent distillation device, but it does not have a distillation device. It was difficult to attach it to a dry cleaning machine for system solvents. In addition, many valves (drain trap and air vent, supply pipe for supplying solvent to the filter and return pipe for returning to the dry cleaning machine, drain and air vent of the filter, etc.) and switches ( Driving the circulation pump of the dry cleaning machine, driving the spin motor, driving the suction pump, etc.) was done manually, leading to erroneous operation and forgetting the operation.

[0004]

[Problems to be Solved by the Invention] When the solvent is filtered and cleaned while being connected to the dry cleaning machine as described above, the filter material in the filter machine is apt to be clogged with dirt or deteriorate in function, and thus adhered. It is necessary to remove the stains or replace the filter medium. In the method of filtering dirt with diatomaceous earth or cartridge filter, not only the cleaning work of the solvent is significantly deteriorated due to the clogging of the filter material due to dirt, but also the operation of the dry cleaning machine is stopped to disassemble and filter the filter. The work was complicated because it was necessary to replace the material. Furthermore, there is a problem that the amount of waste generated is large because the filter media is frequently replaced.

The adoption of the spin disk filter type filter can recover the dirt adhering to the filter board to recover the filtering performance, and the waste is mainly the dirt collected from the filter board. Although the amount of waste can be significantly reduced due to its long service life, etc., there was a problem that the filter did not operate normally due to malfunction and forgetfulness of operation because multiple valves were operated manually.

An object of the present invention is to install a storage tank having a filtering function, which enables installation on a petroleum-based dry cleaning machine and automates complicated valve operation and switch operation to avoid troubles due to erroneous operation or forgetting operation. It is intended to provide a circulating filtration and recovery device for a dry cleaning solvent which can be operated and can be manually operated in an emergency.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in the first invention, a filter having a center pipe that supports a plurality of filter discs and communicates with the inner side of the filter discs, and a filter connected to the filter and connected to the lint trap and the inside side. The supply pipe for supplying the solvent from the dry cleaning machine via the solenoid valve is connected to the center pipe of the filter, and the solvent filtered by the filter board is returned to the dry cleaning machine via the out side solenoid valve. A circulation filter consisting of a return pipe, a spin motor provided outside the filter so as to rotate the filter disc axially supported by the center pipe, and a drain electric valve provided at the inlet end of the filter. A storage tank installed from the drain electric valve via the drain pipe, and a filter bag installed at the tip of the drain pipe in the storage tank, A filter cleaning device consisting of a storage part that stores the solvent filtered by a filter bag and has a drainage part, a float switch installed in the storage part, and a dry cleaning of the solvent stored in the storage part. A solvent recovery device consisting of a suction pump that collects the solvent into the base tank of the machine via a collection pipe, and a circulation cleaning and recovery device for the solvent for dry cleaning were provided.

According to a second aspect of the present invention, there is provided a circulation cleaning and recovery device for a dry cleaning solvent, which is provided with a control box for fully automatic control of an in-side solenoid valve and an out-side solenoid valve, a spin motor, a drain motor valve, and a suction pump. did. In the third invention, as a filter disc, a set of two disc-shaped filter cloths made of polyester are sewn and welded together, and a screen is provided inside to circulate and collect a solvent for dry cleaning, which is a circulation filter.

In the fourth invention, as a filter bag, there is provided a device for circulating filtration and recovery of a solvent for dry cleaning using a two-layer filter cloth composed of a set of two filter cloths having different meshes.

[0010]

[Action]

 In the first invention, as a circulation filtration device, a filtration machine having a plurality of filtration discs is connected to a dry cleaning machine by a supply pipe and a return pipe to form a circulation path, and includes an in-side solenoid valve and an out-side solenoid valve. When opened, the circulation pump of the dry cleaning machine is operated to ensure that the solvent passes through the filter board and blocks the passage of contaminants such as oil dust, lint and sand, and is cleaned.

After the dry cleaning machine is stopped, the in-side solenoid valve and the out-side solenoid valve are closed, and the spin motor provided outside the filter is rotated to drive the filter cleaning device. The rotation of the spin motor causes the center pipe to rotate, and the contaminants adhering to the surface of the filter board can be scattered and removed by centrifugal force. After a certain period of time, when the OUT side solenoid valve is opened and the drain motor valve is opened, the separated contaminants are transferred to the storage tank via the drain pipe by the solvent that flows back from the dry cleaning machine through the OUT side solenoid valve. Sent in. At this time, the solvent penetrates the filter plate from the inside to the outside, further enhancing the cleaning action. The pollutants and solvent sent through the drain pipe are filtered by the filter bag at the tip, and the filtered solvent is stored in the storage section. During storage, the sludge that has settled can be drained by the drain drain.

Further, as a solvent recovery device, the solvent accumulated in the storage part is collected by a float switch to drive a suction pump to a base tank of a dry cleaning machine through a collect pipe. It In the second invention, as the operation of the circulation filtration device, the opening / closing operation of the in-side solenoid valve and the out-side solenoid valve, the operation of the spin motor and the drain electric valve as the operation of the filtration cleaning device, and the operation as the solvent recovery device are performed. By making the suction pump drive etc. fully controllable by sequence control, malfunctions and operations can be eliminated compared to the conventional manual operation.

A filter disc as a third invention is a disc-shaped filter cloth made of polyester, and a set of two discs is sewn and welded at the periphery, and a hard screen is provided on the inner side. The retention is reliable, the filter cloth lasts a long time, and the filtering action is extremely good. A filter bag as a fourth invention reliably filters and removes a solvent containing contaminants removed by a filter with a two-layer filter cloth composed of a pair of filter cloths having different meshes, and then dry-cleans again. Ready to use.

[0014]

【Example】

 Embodiments shown in the drawings will be described below. FIG. 1 is an overall view of the device of the present invention connected to a dry cleaning machine, in which a filter machine 1 is provided with a center pipe 2 therein, and a plurality of filter boards 3 are pivotally supported on the center pipe 2. Reference numeral 4 denotes a communication hole that connects the filter plate 3 and the center pipe 2 to each other. Reference numeral 5 is a supply pipe, one end of which is connected to the inlet of the filter 1 and the other end of which is connected to a dry cleaning machine (not shown).

A lint trap 6 removes large lint and the like. Reference numeral 7 is an in-side solenoid valve. Reference numeral 8 is a return pipe, one end of which is connected to communicate with the center pipe 2 of the filter 1 and the other end of which is connected to the dry cleaning machine. Reference numeral 9 is an out-side solenoid valve, which is provided in the return pipe 8. During operation of a normal dry cleaning machine, the solvent used in the dry cleaning machine by a circulating pump (not shown) is opened by the lint by opening the in-side solenoid valve 7 and the out-side solenoid valve 9. After removing large lint, etc. by the trap 6, it is introduced into the filter 1 through the in-side solenoid valve 7, filtered from the outside of the filter board 3 to the inside, and through the communication hole 4, the center pipe. From 2, return to the dry cleaning machine through the solenoid valve 9 on the out side. In this way, the solvent circulates between the dry cleaning machine and the filter, and is always operated in a state where it is cleaned by the filter. The drain drive valve in the drawing is closed.

Reference numeral 10 denotes a spin motor, which is rotatably connected to a center pipe 2 in the filter 1. A drain pipe 11 is provided at the inlet end of the filter 1, has a drain electric valve 12, and is connected to a lower storage tank 13. A filter bag 14 is provided at the tip of the drain pipe 11 to filter the solvent and store it in the storage part 15. Reference numeral 16 is a drain removing portion, 17 is a float switch, and 18 is a suction pump. A control box 19 has a CPU. 20 is a bypass valve, which is for emergency use.

As shown in FIG. 2, when the spin motor 10 is turned on after the operation of the dry cleaning machine is stopped, the center pipe 2 starts to rotate together with the filter board 3. At this time, the in-side solenoid valve 7 and the out-side solenoid valve 9 are closed. Contaminants such as oil stains and lint attached to the surface of the filter board 3 are scattered by the centrifugal force and separated into the filter 1. After 10 minutes, the solenoid valve 9 on the outside is opened and the drain electric valve 12 is opened, so that the solvent from the dry cleaning machine side is introduced into the filter through the center pipe 2 and the filter plate 3, and the pollutants removed. At the same time, it is discharged from the drain electric valve 12 to the storage tank 13.

The spin motor 10 is turned off after 20 minutes. Subsequently, the solvent from the dry cleaning machine side and the contaminants separated from the filter board 3 are filtered by the filter bag 14 through the drain electric valve 12 and the drain pipe 11, and the solvent filtered in the storage portion 15 is removed. Be stored. The drain electric valve 12 is closed after 20 minutes. When the solvent in the storage tank 13 reaches a certain amount, the float switch 17 operates, and the suction pump 18 collects the solvent in the base tank of the dry cleaning machine and circulates it. Since the sludge of the solvent in the storage tank 13 precipitates within 30 minutes to 3 hours, the suction pump is turned on during this period.

FIG. 3 is a time flowchart of the spin motor 10, the in-side solenoid valve 7, the out-side solenoid valve 9, the drain electric valve 12, and the suction pump 18. The above operation is sequence-controlled by the CPU in the control box 19 and fully automatic operation is performed, so that there is no malfunction or malfunction. In case of an abnormality, manual operation is possible.

In the above structure, the filter plate 3 is a set of two disc-shaped filter cloths made of polyester, a screen is provided for sewing, welding, and holding a beam, and a spacer is provided in the center part. Is connected to the communication hole 4 of the center pipe 2. The filter plate 3 has an infinite number of 25-28 micron micropores, which enables precise and highly transparent filtration (KR spin disk filter).

The filter bag 14 provided in the storage tank 13 is a pair of two-layer filter cloth having two different meshes, and is firmly attached to the flange at the tip of the drain pipe 11. The amount of pollutants in the filter bag 14 and sludge from the drainage part 16 of the storage tank 13 are very small in quantity, and by entrusting these to a specialized waste disposal company, pollution problems do not occur. .

[0022]

[Effect of device]

 In the first invention of the present invention, the solvent enters the filter from the dry cleaning machine through the lint trap and the in-side electromagnetic valve, and the contaminants such as oil dust and thread waste are removed by passing through the filter board, and the center pipe, The circulation filtration device that circulates through the solenoid valve on the out side enabled dry cleaning with a solvent that was always cleaned, resulting in extremely high efficiency.

Further, as a filter cleaning device, the removal and separation of contaminants by rotating the filter disk is sure, and the solvent from the dry cleaning machine is filtered through the drain electric valve through the drain pipe through the filter bag. The highly accurate filtered solvent can now be stored in the storage tank. Then, a certain amount of solvent stored in the solvent recovery device was collected by the suction pump in the base tank of the dry cleaning machine and reused.

Therefore, a highly accurate solvent can be repeatedly obtained, and the solvent of the dry cleaning machine can be used very effectively. The amount of pollutants removed by the filter board and filter bag is extremely small, and since these are disposed of by specialists, pollution problems do not occur. It can be easily installed on petroleum-based dry cleaning machines that do not have a distillation recovery function, and its effect is great.

In the second invention, since all can be automatically operated, it is quicker and safer than the case of manual operation, and since the solvent is automatically circulated, a large distiller or the like is used in the dry cleaning industry. It is now possible to provide an epoch-making device without having to prepare for it. In the third invention, the filter board is made of polyester, and the solvent can be filtered and regenerated with high accuracy during the dry cleaning operation.

In the fourth invention, since the filtration by the filter bag uses the two-layer filtration cloth, the filtration accuracy is high, the filtration time can be greatly shortened, and the filtration efficiency is further improved together with the solvent.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a circulating filtration device driven in the device of the present invention.

FIG. 2 is an explanatory diagram of driving a filter cleaning device and a solvent recovery device in the device of the present invention.

FIG. 3 is a time flowchart diagram in FIG.

[Explanation of symbols]

 1 Filter 2 Center pipe 3 Filter board 5 Supply pipe 6 Lint trap 7 In-side solenoid valve 8 Return pipe 9 Out-side solenoid valve 10 Spin motor 11 Drain pipe 12 Drain electric valve 13 Storage tank 14 Filter bag 15 Reservoir 16 Drain drain 17 Float switch 18 Suction pump 19 Control box

Claims (4)

[Scope of utility model registration request] 1. A filter having a center pipe that supports a plurality of filter discs and communicates with the inside of the filter discs, and a dry cleaning device that is connected to the filter and has a lint trap and an inner solenoid valve. A circulation filtration device comprising a supply pipe for supplying the solvent from the machine and a return pipe communicating with the center pipe of the filtration machine and returning the solvent filtered by the filtration plate to the dry cleaning machine via an out-side solenoid valve. A spin motor provided outside the filter so as to rotate the filter disc axially supported by the center pipe, a drain electric valve provided at the inlet end of the filter, and a drain pipe from the drain electric valve. Via the storage tank, the filter bag provided at the end of the drain pipe in the storage tank, and the melt filtered by the filter bag. And a storage unit having a drain removal unit, a filter cleaning device, a float switch provided in the storage unit, and a solvent collected in the storage unit to a base tank of a dry cleaning machine via a collect pipe. A solvent recovery device consisting of a suction pump that collects and collects the solvent, and a circulating filter and recovery device for the dry cleaning solvent. 2. The solvent for dry cleaning according to claim 1, further comprising a control box for fully automatically controlling the in-side solenoid valve and the out-side solenoid valve, the spin motor, the drain motor valve, and the suction pump. Circulation filtration,
Recovery device. 3. The apparatus for circulating filtration and recovery of a solvent for dry cleaning according to claim 1, wherein a pair of disc-shaped filter cloth made of polyester is sewn and welded as the filter board, and a screen is provided inside. . 4. The apparatus for circulating filtration and recovery of a solvent for dry cleaning according to claim 1, wherein a two-layer filter cloth composed of a set of two filter cloths having different meshes is used as the filter bag.