Dry cleaning machine with composite filtering and solvent recycling functions

Abstract

The utility model discloses a dry cleaning machine with composite filtering and solvent recycling functions, and relates to the field of dry cleaning machines. Comprising a washing and drying module, a triple filtering module and a solvent recovery module, the washing and drying module is communicated with the triple filtering module through a pipeline, and the triple filtering module is communicated with the solvent recovery module through a pipeline; the triple filtering module comprises a multi-disc centrifugal filter, a paper core filter and an all-carbon filter, the multi-disc centrifugal filter, the paper core filter and the all-carbon filter are sequentially connected, and the multi-disc centrifugal filter, the paper core filter and the all-carbon filter are respectively communicated with the solvent recovery module through discharge pipes. The dry cleaning machine has triple filtration and solvent recovery functions, does not need distillation, and saves energy consumption.

Description

Technical Field

[0001] The utility model relates to the field of dry cleaning machines, in particular to a dry cleaning machine with composite filtering and solvent recovery functions. Background Art

[0002] Dry cleaning machines use dry cleaning solvents to wash clothing. Currently, the distillation system of dry cleaning machines uses the different boiling points of the components in the liquid-solid system to evaporate water from the solvent, and then separates and distills the solvent so that the solvent can be recycled. This method has the best solvent purification effect, but the distillation method used in traditional dry cleaning machines has the following disadvantages:

[0003] First, the equipment structure is complex, generally consisting of a dry cleaning machine washing and drying system, a filter and a distillation system, such as Figure 1 As shown; especially for high-boiling point solvents such as hydrocarbon solvents, the process of reduced pressure distillation must be adopted, the equipment structure is relatively complex, and the cost increases.

[0004] The second is high energy consumption. Taking a 30kg dry cleaning machine as an example, the electricity required for one distillation is about 30-40kWh, or 60-80kg of steam. At the same time, 800-1000kg of cooling water is also required. This part of energy consumption accounts for the majority of the dry cleaning cost.

[0005] In addition, the distillation residue contains residual solvents, which have a certain impact on the environment.

[0006] Therefore, if other methods can be used to purify and recycle dry cleaning solvents instead of using distillation, the cost of dry cleaning can be reduced to a relatively low level. Utility Model Content

[0007] In order to solve the above-mentioned problems in the prior art, the utility model provides a dry cleaning machine with composite filtration and solvent recovery functions, which has triple filtration and solvent recovery functions, does not require distillation, and saves energy.

[0008] The technical solution adopted by the utility model to solve its technical problems is: a dry cleaning machine with composite filtration and solvent recovery functions, comprising a washing and drying module, a triple filtration module and a solvent recovery module; the washing and drying module is connected to the triple filtration module through a pipeline, and the triple filtration module is connected to the solvent recovery module through a pipeline; the triple filtration module comprises a multi-disc centrifugal filter, a paper core filter and a full carbon filter, the multi-disc centrifugal filter, the paper core filter and the full carbon filter are connected in sequence, and the multi-disc centrifugal filter, the paper core filter and the full carbon filter are respectively connected to the solvent recovery module through a discharge pipe.

[0009] A discharge valve is provided on the discharge pipe.

[0010] The solvent recovery module includes a sewage bucket, a sewage bucket cover, a filter bag, a recoverer shell, a condenser, a solvent recovery port, a heater, a fan, an air inlet pipe and an air outlet pipe; the sewage bucket cover is installed on the top of the sewage bucket, the top of the side wall of the sewage bucket is connected to the discharge pipe, and a filter bag with an opening facing upward is provided in the sewage bucket; the interior of the recoverer shell is composed of a lower condensation area and an upper heating area that are connected to each other, a condenser is provided in the condensation area, and a solvent recovery port is provided at the bottom of the condensation area; a heater and a fan are provided in the heating area; the bottom of the side wall of the sewage bucket is connected to the condensation area of ​​the recoverer shell through an air inlet pipe; the heating area of ​​the recoverer shell is connected to the top of the side wall of the sewage bucket through the air outlet pipe.

[0011] The air inlet pipe and the air outlet pipe are both provided with pipeline valves.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] Traditional dry cleaning machines only use paper core filters. Since the used dry cleaning solvent contains a large amount of solid particles washed from the clothes, these solid particles will form a filter cake on the outside of the filter paper core, resulting in a large amount of sludge on the outside of the paper core filter, shortening the life of the filter. If the filter element is not replaced in time, the dry cleaning solvent will have an odor over time, causing the clothes after dry cleaning to also have a residual odor. The advantage of the triple filtration module of this dry cleaning machine using a triple composite filter is that the multi-disc centrifugal filter can filter out most of the solid particles. At the same time, through normal and regular maintenance of the multi-disc centrifugal filter, the solvent entering the paper core contains very few solid particles, which can greatly extend the life of the paper core filter. After filtering through activated carbon, the dry cleaning solvent can remain clear for a long time and no odor will be generated.

[0014] The solvent recovery module replaces the traditional distillation method, greatly reducing the consumption of energy and cooling water, and lowering the equipment procurement cost; the solvent can be recycled, avoiding the waste of some dry cleaning additives in the dry cleaning solvent during the distillation process, and also eliminating the environmental problems caused by distillation residues, and completely eliminating the safety hazards existing in the high-temperature distillation of solvents.

[0015] The solvent recovery module can be applied to various types of dry cleaning machines such as tetrachloroethylene dry cleaning machines, hydrocarbon solvent dry cleaning machines and multi-solvent dry cleaning machines, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 It is a structural principle diagram of a traditional dry cleaning machine in the prior art;

[0018] Figure 2 It is a structural principle diagram of the utility model;

[0019] Figure 3 This is the structural principle diagram of the solvent recovery module.

[0020] Markings in the figure include: 1. Washing and drying module, 2. Triple filtration module, 3. Solvent recovery module, 4. Pipeline, 5. Multi-disc centrifugal filter, 6. Paper core filter, 7. All-carbon filter, 8. Drain pipe, 9. Drain valve, 10. Drain bucket, 11. Drain bucket cover, 12. Filter bag, 13. Recycler shell, 14. Condenser, 15. Solvent recovery port, 16. Heater, 17. Fan, 18. Air inlet pipe, 19. Air outlet pipe, and 20. Pipeline valve. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] Reference Figure 2-3 This embodiment provides a dry cleaning machine with composite filtration and solvent recovery functions, including a washing and drying module 1, a triple filtration module 2 and a solvent recovery module 3; the washing and drying module 1 is connected to the triple filtration module 2 through a pipeline 4, and the triple filtration module 2 is connected to the solvent recovery module 3 through a pipeline 4; the triple filtration module 2 includes a multi-disc centrifugal filter 5, a paper core filter 6 and a full carbon filter 7, the multi-disc centrifugal filter 5, the paper core filter 6 and the full carbon filter 7 are connected in sequence, and the multi-disc centrifugal filter 5, the paper core filter 6 and the full carbon filter 7 are respectively connected to the solvent recovery module 3 through a discharge pipe 8.

[0023] In this embodiment, a discharge valve 9 is provided on the discharge pipe 8 .

[0024] In this embodiment, the solvent recovery module includes a sewage bucket 10, a sewage bucket cover 11, a filter bag 12, a recoverer shell 13, a condenser 14, a solvent recovery port 15, a heater 16, a fan 17, an air inlet pipe 18 and an air outlet pipe 19; the sewage bucket cover 11 is installed on the top of the sewage bucket 10, the top of the side wall of the sewage bucket 10 is connected to the discharge pipe 8, and a filter bag 12 with an opening facing upward is provided in the sewage bucket 10; the interior of the recoverer shell 13 is composed of a lower condensation area and an upper heating area connected to each other, a condenser 14 is provided in the condensation area, and a solvent recovery port 15 is provided at the bottom of the condensation area; a heater 16 and a fan 17 are provided in the heating area; the bottom of the side wall of the sewage bucket 10 is connected to the condensation area of ​​the recoverer shell 13 through the air inlet pipe 18; the heating area of ​​the recoverer shell 13 is connected to the top of the side wall of the sewage bucket 10 through the air outlet pipe 19.

[0025] In this embodiment, pipeline valves 20 are provided on both the air inlet pipe 18 and the air outlet pipe 19 .

[0026] The operating principle of this dry cleaning machine is as follows: the detergent in the washing and drying module 1 first enters the triple filtration module 2. The multi-disc centrifugal filter 5 in the triple filtration module 2 is used to filter solid particles from the contaminated dry cleaning solvent. Different filter models (with varying filtration accuracy and filtration area) can be selected depending on the specifications of the dry cleaning machine. Theoretically, it can filter out 98-99% of the solid particles in the contaminated solvent. The paper core filter 6 is responsible for filtering fine particles not filtered out by the multi-disc centrifugal filter 5. The activated carbon filter 7, which uses a filter cartridge filled with activated carbon, is responsible for filtering color molecules and odors from the solvent.

[0027] The triple filter requires maintenance after a period of use. Maintenance for the paper filter 6 requires only replacing the carbon core; the activated carbon filter 7 requires replacing the activated carbon in the cartridge. The multi-disc centrifugal filter 5 is maintained by flushing. The combined effects of filter disc rotation and solvent pressure cause the filtered solid particles to fall off the discs and be discharged as a slurry into the solvent recovery module 3.

[0028] After maintenance of the multi-disc centrifugal filter 5 is completed, the muddy dirt discharged from the filter falls into the filter bag 12 in the solvent recovery module 3. After a period of sedimentation, the solvent recovery module 3 begins to work. First, the fan 17 and the pipeline valve 20 are turned on, and the heater 16 and the condenser 14 work simultaneously. The hot air heated by the heater 16 is pushed by the fan 17 and blown into the sewage tank 10 through the outlet pipe 19. After passing through the dirt in the filter bag 12, the residual solvent in the dirt passes through the filter bag 12 and enters the condensation area of ​​the recovery shell 13 through the air inlet pipe 18. After condensation by the condenser 14, the solvent in the hot air is condensed and discharged through the solvent recovery port 15 for reuse. The condensed air enters the heating area and is heated by the heater 16. The above cycle is repeated until the dirt in the filter bag 12 is dry and the recovery process is completed.

[0029] Finally, open the sewage bucket cover 11, take out the filter bag 12 containing dry dirt, and replace it with a new filter bag and place it in the sewage bucket 10.

[0030] After being processed by the solvent recovery module 3, the solvent in the sludge discharged from the filter is completely recovered, and the remaining dry dirt fully meets the environmental emission standards, achieving zero emissions and zero pollution.

[0031] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A dry cleaning machine with composite filtering and solvent recovery functions, characterized in that: The invention comprises a washing and drying module (1), a triple filtration module (2) and a solvent recovery module (3); the washing and drying module (1) is connected to the triple filtration module (2) through a pipeline (4), and the triple filtration module (2) is connected to the solvent recovery module (3) through a pipeline (4); the triple filtration module (2) comprises a multi-disc centrifugal filter (5), a paper core filter (6) and a full carbon filter (7), the multi-disc centrifugal filter (5), the paper core filter (6) and the full carbon filter (7) are connected in sequence, and the multi-disc centrifugal filter (5), the paper core filter (6) and the full carbon filter (7) are respectively connected to the solvent recovery module (3) through a discharge pipe (8).

2. The dry cleaning machine with composite filtration and solvent recovery functions according to claim 1, characterized in that: The discharge pipe (8) is provided with a discharge valve (9).

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