CN112295317A - Dry type cleaning device - Google Patents
Dry type cleaning device Download PDFInfo
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- CN112295317A CN112295317A CN201910695800.2A CN201910695800A CN112295317A CN 112295317 A CN112295317 A CN 112295317A CN 201910695800 A CN201910695800 A CN 201910695800A CN 112295317 A CN112295317 A CN 112295317A
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- Prior art keywords
- cleaning
- filter
- gas
- unit
- dust collecting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D41/00—Regeneration of the filtering material or filter elements outside the filter for liquid or gaseous fluids
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention provides a dry cleaning device which can simply and effectively clean a filter of a dust collecting part. The dry cleaning device is provided with: a cleaning tank having a cleaning medium stored therein, the cleaning object being disposed so as to cover the opening; a gas supply unit configured to supply the gas into the cleaning tank through a first flow path; a dust collecting part, wherein the waste gas containing dirt discharged from the cleaning tank is discharged to the dust collecting part and is filtered by a filter arranged in the dust collecting part; the dust collecting unit is further provided with a cleaning unit for spraying gas to the filter to clean the filter, and the cleaning unit is communicated with the gas supply unit via a second flow path parallel to the first flow path.
Description
Technical Field
The present invention relates to a dry cleaning apparatus that removes dust, dirt, and the like adhering to a cleaning target by scattering a cleaning medium with a gas and colliding with the cleaning target.
Background
In recent years, dry cleaning techniques have been proposed which can clean a cleaning object without using a liquid such as an organic solvent or water. As a dry cleaning apparatus using such a technique, for example, the following patent documents are disclosed.
Patent documents: japanese patent No. 4531841
Such a dry cleaning apparatus includes a cleaning tank and a gas supply unit for supplying gas into the cleaning tank. The cleaning tank has an opening, and a plate-shaped cleaning object is disposed so as to cover the opening. The cleaning tank contains a cleaning medium such as a resin sheet. The gas supply section supplies gas into the cleaning tank, thereby forming a swirling flow in the cleaning tank and scattering the cleaning medium. The cleaning medium in the scattered state collides with the surface of the object to be cleaned, and the dust, dirt, and the like adhering thereto can be removed, thereby achieving the cleaning effect.
The removed dirt is usually discharged from the cleaning tank and collected by the dust collection unit. The dust collecting unit is provided with a filter for filtering the waste gas containing the dirt discharged from the cleaning tank to collect the dirt, and the cleaned gas from which the dirt is removed is discharged to the outside of the machine.
However, such a dust collecting unit has a problem that the filter is easily clogged with dirt, and therefore, the filter needs to be periodically cleaned. In the prior art, the filter is usually cleaned by a brush. Such cleaning operation can be performed manually, but has a problem that the operation is troublesome and takes time. If a driving mechanism for driving the brush to move is provided, the structure of the dust collecting part becomes complicated, and the cleaning operation of the brush becomes complicated, which makes it difficult to design the driving mechanism.
Disclosure of Invention
In view of the above circumstances, the present invention provides a dry cleaning device capable of simply and efficiently cleaning a filter of a dust collecting section.
The dry cleaning apparatus according to the present invention is a dry cleaning apparatus for removing dirt adhering to a cleaning object by scattering a cleaning medium with a gas and colliding the cleaning medium with the cleaning object, the dry cleaning apparatus including:
a cleaning tank having an opening, a cleaning medium being contained in the cleaning tank, and the cleaning object being disposed so as to cover the opening;
a gas supply unit configured to supply the gas into the cleaning tank through a first flow path;
a dust collecting part to which an exhaust gas containing dirt discharged from the cleaning tank is discharged and which is filtered by a filter disposed in the dust collecting part;
the dust collecting part is also provided with a cleaning part which sprays gas to the filter to clean the filter,
the cleaning unit is communicated with the gas supply unit via a second flow path parallel to the first flow path.
According to the above configuration, the cleaning unit for cleaning the filter can be configured by the structure for supplying the gas to the cleaning tank in the dry cleaning apparatus, and therefore, the structure is simpler and the design is easier than the structure of the brush type cleaning unit in the related art.
Further, it is preferable that the gas supply unit does not supply gas to the cleaning tank and the cleaning unit at the same time.
The gas supply unit supplies gas to the cleaning unit after the supply of gas to the cleaning tank is stopped.
Thus, although the cleaning operation of the filter and the cleaning operation of the cleaning object use the gas from the gas supply unit, the cleaning operation of the filter does not affect the cleaning effect of the cleaning object because the gas is supplied only to the cleaning tank when the cleaning object is cleaned. On the other hand, when the filter is cleaned, the cleaning effect of the filter can be ensured.
Further, it is preferable that a negative pressure detecting unit for detecting a negative pressure in the dust collecting unit is provided in the dust collecting unit upstream of the filter in a flow direction of the exhaust gas,
the gas supply unit supplies gas to the cleaning unit when the negative pressure detected by the negative pressure detection unit is lower than a predetermined value.
According to the above configuration, by cleaning the filter when the negative pressure is reduced to the predetermined value or less, it is possible to select an optimum time for cleaning according to the state of dirt accumulated on the filter. Therefore, the filter can be cleaned intensively and timely without occupying too much time for cleaning the cleaning object, thereby improving the efficiency of the cleaning operation in the cleaning tank.
In addition, when the negative pressure detected by the negative pressure detecting unit is lower than a predetermined value, the gas supply unit stops supplying the gas to the cleaning tank and starts supplying the gas to the cleaning unit after the cleaning of the current cleaning target in the cleaning tank is completed.
According to the structure, the filter can be cleaned timely and effectively, and the cleaning operation in the cleaning tank is not influenced.
Preferably, the filter is formed in a hollow cylindrical shape, and is provided in the dust collecting part in a state in which openings at both ends of the cylinder are directed in the vertical direction,
the waste gas discharged from the cleaning tank enters the filter from an opening at the upper end of the filter, passes through the cylinder wall of the filter and then is discharged out of the dust collecting part;
a recovery unit for recovering dirt is disposed immediately below the opening at the lower end of the filter.
According to the above configuration, since the gas containing the dirt discharged from the cleaning tank enters the filter through the opening at the upper end of the filter and flows from the inside of the cylindrical filter toward the outside, the dirt adheres to the inner wall of the filter, and the collecting portion is provided directly below the opening at the lower end of the filter, whereby the cleaned dirt can fall into the collecting portion by its own weight.
Further, the cleaning unit has a nozzle for injecting the gas toward the filter,
the nozzle is formed in a tubular shape with a closed front end, and a plurality of openings arranged in a spiral shape are formed on the tube wall.
According to the above configuration, since the cleaning unit is provided with the nozzle corresponding to the cylindrical filter, the cleaning of the entire filter can be completed at a time by simply inserting the cleaning unit into the filter and injecting the gas, and therefore, the cleaning operation is simpler and quicker than the conventional cleaning operation.
Drawings
Fig. 1 is a schematic view showing the overall configuration of a dry cleaning apparatus according to the present invention.
Fig. 2 is a schematic view showing the structure of the dust collecting section.
Fig. 3(a) and (B) are schematic views showing the structure of the cleaning unit.
Fig. 4 is a diagram illustrating a control method of the control unit according to the first embodiment.
Fig. 5 is a diagram illustrating a control method of the control unit according to the second embodiment.
Description of the reference numerals
1 cleaning part
2 gas supply part
3 dust collecting part
4 control part
5 cleaning object
11 rinse tank
21 first flow path
22 second flow path
12 exhaust part
32 fan
33 Filter
34 cleaning part
341 nozzle
342 open
35 recovery part
36 negative pressure sensor
V1 first valve
V2 second valve
Detailed Description
Hereinafter, embodiments according to the present invention will be described with reference to the drawings, and the following embodiments are not intended to limit the present invention, although various limitations are made to the components, types, combinations, positions, shapes, numbers, relative arrangements, and the like.
As shown in fig. 1, the dry cleaning apparatus includes: a cleaning part 1 for cleaning a cleaning object 5; a gas supply unit 2 for supplying gas to the cleaning unit 1; a dust collecting part 3 for collecting dirt and a control part 4 for controlling the above parts.
The cleaning section 1 is formed with a cleaning tank 11. The cleaning tank 11 is formed with an opening opened upward, and a cleaning medium is accommodated in the cleaning tank 11. The cleaning medium is a thin, lightweight, and easily flying member, and may be formed of a resin, or a sheet such as paper or cloth.
The cleaning object 5 is disposed so as to cover the opening of the cleaning tank 11 during cleaning, and thereby a closed space is formed in the cleaning tank 11. Preferably, the cleaning tank 11 and the cleaning object 5 are movable relative to each other. This enables the cleaning of the entire surface of the relatively large cleaning target 5.
An air inlet nozzle is formed at a substantially central position of the bottom of the cleaning tank 11. The gas inlet nozzle is connected to the gas supply unit 2 via a first flow path 21. The first flow path 21 is provided with a first valve V1, and the opening and closing of the first valve V1 is controlled by the controller 4.
The gas supplied from the gas supply unit 2 is preferably compressed air. By supplying compressed air from the gas supply unit 2 into the cleaning tank 11 through the air inlet nozzle 341, a swirling flow as shown by a broken line in the figure can be formed. By this swirling flow, the cleaning medium is scattered in cleaning tank 11 and collides with cleaning object 5 above, and dirt adhering to cleaning object 5 can be removed.
The cleaning unit 1 is also provided with an exhaust unit 12 for discharging the exhaust gas containing the dirt removed from the cleaning object 5 from the cleaning tank 11 and guiding the exhaust gas to the dust collection unit 3.
Next, the structure of the dust collecting section 3 will be described in detail.
As shown in fig. 2, a fan 32 may be provided in the dust collection section 3 to make the inside of the dust collection section negative pressure with respect to the cleaning tank 11 in the cleaning section 1. Thereby, the dust collecting section 3 can suck the exhaust gas containing dirt from the cleaning tank 11 into the dust collecting section 3 by the internal negative pressure.
A filter 33 is also provided in the dust collecting part 3. The exhaust gas containing the dirt discharged from the cleaning tank 11 is filtered by the filter 33, the dirt adheres to the filter 33, and the clean air from which the dirt is removed is discharged to the outside from the opening provided in the dust collecting section 3.
The structure of the filter 33 is not particularly limited, and a general filter 33 can be used. In the present embodiment, the filter 33 has a hollow cylindrical shape. In the exhaust gas flow path 31, the filter 33 is provided in a state in which openings at both ends of the cylinder are directed in the vertical direction, and the exhaust gas discharged from the cleaning tank 11 enters the inside of the filter 33 from the opening at the upper end of the filter 33 and is discharged to the outside of the dust collecting part through the cylinder wall of the filter 33, whereby the exhaust gas flows from the inside of the cylindrical filter 33 to the outside, and the dirt adheres to the inner wall of the filter 33.
As dirt accumulates on the filter 33, there is a possibility that clogging of the filter 33 is caused, resulting in a reduction in the filtering effect. Therefore, the dust collecting unit 3 is provided with a cleaning unit 34 for cleaning the filter 33 and a collecting unit 35 located below the filter 33.
The cleaning unit 34 of the present embodiment is configured to blow off dirt adhering to the filter 33 to the collection unit 35 by injecting gas. As shown in fig. 3A, the cleaning unit 34 has a nozzle 341 for jetting gas toward the filter 33, and the nozzle 341 is formed in a tubular shape with a closed tip, and a plurality of openings 342 are formed in a tube wall in a spiral arrangement. By inserting the nozzle 341 into the cylindrical filter 33 as shown in fig. 3B, the gas can be uniformly sprayed to the inner wall of the filter 33, and the attached dirt can be quickly blown off.
The recovery unit 35 is provided directly below the opening at the lower end of the cylindrical filter 33. Thus, dirt accumulated on the inner wall of the filter 33 and dirt cleaned by the cleaning unit 34 can fall into the collection unit 35 by its own weight.
Since the cleaning unit 34 is formed with the nozzle 341 adapted to the cylindrical filter 33, the cleaning operation of the entire filter 33 can be completed at a time by simply inserting the cleaning unit 34 into the filter 33 and injecting the gas, and therefore, the cleaning operation is simpler and quicker than the cleaning operation of the brush type cleaning unit of the related art.
Further, since the gas injected from the cleaning portion 34 is supplied from the gas supply portion 2, the cleaning portion 34 in the dust collecting portion communicates with the gas supply portion 2 via the second flow path 22 as shown in fig. 1. The second channel 22 is provided with a second valve V2, and the opening and closing of the second valve V2 is controlled by the control unit 4.
Accordingly, the cleaning unit for cleaning the filter can be configured by the structure of supplying the gas to the cleaning tank 11 which is already provided in the dry cleaning apparatus, and therefore, the structure is simpler and the design is easier than the structure of the brush type cleaning unit in the related art.
Further, it is preferable that the first flow path 21 for supplying the gas to the cleaning tank 11 and the second flow path 22 for supplying the gas to the cleaning unit 34 are parallel to each other. The control unit 4 can control the supply of the gas to the cleaning tank 11 and the cleaning unit 34 by controlling the first valve V1 and the second valve V2.
The control method of the control unit 4 will be described in detail below.
[ first embodiment ]
In the present embodiment, the control unit 4 controls the gas supply unit 2 so that the first channel 21 and the second channel 22 are not simultaneously open. In other words, the first valve V1 and the second valve V2 are not simultaneously opened, that is, the cleaning operation for the cleaning object 5 and the cleaning operation for the filter 33 are not simultaneously performed.
For example, as shown in fig. 4, the cleaning operation for the cleaning target 5 and the cleaning operation for the filter 33 are alternately performed. Preferably, the cleaning operation of the filter 33 is performed after each cleaning operation of the cleaning object 5 is completed.
Thus, although the cleaning operation of the filter 33 uses the gas from the gas supply unit 2 as well, the cleaning operation of the filter 33 does not affect the cleaning effect of the cleaning object because the first valve V1 is turned on and the second valve V2 is turned off to supply the gas only to the cleaning tank 11 when the cleaning object 5 is cleaned. On the other hand, when the filter 33 is cleaned, the second valve V2 is closed and the first valve V1 is opened, and only the gas is supplied to the cleaning unit 34, so that the cleaning effect of the filter 33 can be ensured.
By performing the cleaning operation of the filter 33 after the cleaning operation of the cleaning target 5 is completed, the dirt attached to the filter 33 can be removed in time, and the cleaning effect of the next cleaning target 5 can be ensured.
[ second embodiment ]
More preferably, the dust collecting unit 3 is provided with a negative pressure sensor 36 at a position upstream of the filter 33 in the flow direction of the exhaust gas. The negative pressure sensor 36 detects the negative pressure in the dust collecting unit 3 and sends the detection result to the control unit 4. The controller 4 controls the first valve V1 and the second valve V2 based on the negative pressure detected by the negative pressure sensor 36.
Specifically, when the negative pressure detected by the negative pressure sensor 36 is equal to or less than a predetermined value, the gas supply unit 2 supplies gas to the cleaning unit 34 in the dust collection unit 3. More preferably, when the negative pressure detected by the negative pressure sensor 36 is equal to or less than a predetermined value, after the cleaning operation for the current cleaning object 5 is completed, the first valve V1 is opened and the second valve V2 is closed, so that the gas supply unit 2 supplies gas to the cleaning unit 34 in the dust collection unit 3. The predetermined value may be set to a value at which the exhaust gas containing dirt cannot be efficiently discharged from the cleaning tank 11 to the dust collecting unit if the negative pressure is less than or equal to the predetermined value.
As shown in fig. 5, the gas supply unit 2 continues to supply gas to the cleaning tank 11 until time t1, and each cleaning object 5 is continuously cleaned, and after a decrease in the negative pressure in the dust collection unit 3 is detected at time t1, the second valve V2 is not directly turned on, but after cleaning of the cleaning object 5 is completed (time t 2), the first valve V1 is turned off and the second valve V2 is turned on, so that the gas supply unit 2 starts to supply gas to the cleaning unit 34 in the dust collection unit 3, and the filter 33 is cleaned.
Since the negative pressure in the dust collecting section 3 gradually decreases as the dirt is gradually accumulated on the filter 33, the amount of dirt accumulated on the filter 33 can be determined by detecting the negative pressure, and the most appropriate time can be selected for cleaning according to the state of the dirt accumulated on the filter 33. In addition, since the filter 33 can be cleaned intensively and promptly, the time for cleaning the cleaning object is not excessively consumed, and the efficiency of the cleaning work in the cleaning tank 11 can be improved.
The embodiments of the present invention have been described above. The above embodiments are merely examples, and those skilled in the art can combine and modify the embodiments without departing from the scope of the present invention.
For example, in the above embodiment, the control unit 4 controls the first valve V1 and the second valve V2 to control the cleaning operation in the cleaning tank and the cleaning operation of the cleaning unit, respectively, but the control unit 4 may also control the gas supply unit in another manner to realize the above control method. The filter and the cleaning unit according to the present invention are not limited to the above embodiments, and may have other configurations.
Claims (7)
1. A dry cleaning apparatus for removing dirt adhering to a cleaning object by scattering a cleaning medium with a gas and colliding the cleaning medium with the cleaning object, comprising:
a cleaning tank having an opening, a cleaning medium being contained in the cleaning tank, and the cleaning object being disposed so as to cover the opening;
a gas supply unit configured to supply the gas into the cleaning tank through a first flow path;
a dust collecting part to which an exhaust gas containing dirt discharged from the cleaning tank is discharged and which is filtered by a filter disposed in the dust collecting part;
the dust collecting part is also provided with a cleaning part which sprays gas to the filter to clean the filter,
the cleaning unit is communicated with the gas supply unit via a second flow path parallel to the first flow path.
2. Dry cleaning apparatus according to claim 1,
the gas supply unit does not supply gas to the cleaning tank and the cleaning unit at the same time.
3. Dry cleaning apparatus according to claim 2,
the gas supply unit supplies gas to the cleaning unit after the supply of gas to the cleaning tank is stopped.
4. A dry cleaning device as claimed in any one of claims 1 to 3,
a negative pressure detection unit for detecting a negative pressure in the dust collection unit is provided upstream of the filter in a flow direction of the exhaust gas in the dust collection unit,
the gas supply unit supplies gas to the cleaning unit when the negative pressure detected by the negative pressure detection unit is lower than a predetermined value.
5. Dry cleaning apparatus according to claim 4,
when the negative pressure detected by the negative pressure detection unit is lower than a predetermined value, the gas supply unit stops supplying the gas to the cleaning tank and starts supplying the gas to the cleaning unit after the cleaning of the current cleaning target in the cleaning tank is completed.
6. The dry cleaning apparatus as claimed in claims 1 to 3,
the filter is formed in a hollow cylindrical shape, and is provided in the dust collecting part in a state that openings at both ends of the cylinder are directed in the vertical direction,
the waste gas discharged from the cleaning tank enters the filter from an opening at the upper end of the filter, passes through the cylinder wall of the filter and then is discharged out of the dust collecting part;
a recovery unit for recovering dirt is disposed immediately below the opening at the lower end of the filter.
7. Dry cleaning apparatus according to claim 6,
the cleaning unit has a nozzle for injecting the gas toward the filter,
the nozzle is formed in a tubular shape with a closed front end, and a plurality of openings arranged in a spiral shape are formed on the tube wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910695800.2A CN112295317A (en) | 2019-07-30 | 2019-07-30 | Dry type cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910695800.2A CN112295317A (en) | 2019-07-30 | 2019-07-30 | Dry type cleaning device |
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| Publication Number | Publication Date |
|---|---|
| CN112295317A true CN112295317A (en) | 2021-02-02 |
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ID=74485693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910695800.2A Pending CN112295317A (en) | 2019-07-30 | 2019-07-30 | Dry type cleaning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115069674A (en) * | 2021-03-16 | 2022-09-20 | 理光创想智造有限公司 | Dry type cleaning device |
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| CN104550119A (en) * | 2013-10-15 | 2015-04-29 | 株式会社理光 | Dry cleaning casing, dry cleaning apparatus and attachment method of screen plate |
| CN105833618A (en) * | 2016-05-12 | 2016-08-10 | 成都点石创想科技有限公司 | Bag type dust collector |
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2019
- 2019-07-30 CN CN201910695800.2A patent/CN112295317A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002316104A (en) * | 2001-02-19 | 2002-10-29 | Hitachi Zosen Corp | Dry cleaning method and apparatus for plastics |
| CN104550119A (en) * | 2013-10-15 | 2015-04-29 | 株式会社理光 | Dry cleaning casing, dry cleaning apparatus and attachment method of screen plate |
| CN105833618A (en) * | 2016-05-12 | 2016-08-10 | 成都点石创想科技有限公司 | Bag type dust collector |
| CN206566643U (en) * | 2016-09-13 | 2017-10-20 | 南昌大学 | A kind of inward flow filtration-type filter core jet entrainment deashing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115069674A (en) * | 2021-03-16 | 2022-09-20 | 理光创想智造有限公司 | Dry type cleaning device |
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Application publication date: 20210202 |
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