JPH03217283A - Device for recovering fine particle generated in cleaning - Google Patents

Abstract

PURPOSE:To prevent the spread of fine particles generated in cleaning by providing an exhaust space between a partition wall and a recovered liq. and forming a sink from which the recovered liq. flows out in an inlet chamber. CONSTITUTION:A solvent 34 in a vapor generating part 26 in a cleaning tank 17 is heated by a heater 25 to generate a cleaning vapor, the cleaning vapor from the vapor generating part 26 is brought into contact with a material 35 to be cleaned at a cleaning part 18 to clean the material and then flows to the upper chamber 20 provided above the cleaning part 18. At this time, the recovered liq. 4 is conducted to the sink 11 through a recovered liq. feed pipe 13, discharged and allowed to flow down from the sink 11. The recovered liq. 4 is then brought into contact with a trickling member 15 and sent down to the inlet opening 7 of the partition wall 6, and the recovered liq. 4 flows into the opening 7. A passage for the recovered liq. 4 is formed between the sink 11 and the opening 7, and air flows toward the opening 7 in the inlet chamber 3. Consequently, the recovery efficiency is improved.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a device for collecting particulates such as solvent vapor and droplets generated during cleaning, and is connected to a cleaning device that cleans objects to be cleaned. The purpose is to prevent the diffusion of solvents.

Conventional technology Conventional cleaning equipment that cleans objects by heating the solvent to generate cleaning steam, showering the solvent in the form of a shower, or spraying the solvent onto the object under high pressure. It has been known. In order to prevent solvent vapor from spreading in these devices, a coiled cooling pipe is installed in the upper chamber located above the cleaning section, and the cleaning vapor is brought into contact with this cooling pipe. Attempts were made to prevent the solvent from flowing out of the cleaning tank by condensing it, but this was extremely insufficient and not only unfavorable from an environmental hygiene perspective, but also uneconomical as it caused a lot of solvent loss. The outflow that occurs during this steam cleaning is caused by the flow of cleaning steam into the upper chamber that exceeds the condensing capacity of the cooling pipe.

Furthermore, there has been almost no effective collection method for the droplets generated when a solvent is showered onto the object to be cleaned or when the solvent is sprayed at high pressure onto the object to be cleaned. was used, which was not only more unfavorable than steam from an environmental hygiene perspective, but also was uneconomical due to a large amount of solvent loss.

Problems to be Solved by the Invention The present invention attempts to solve the above-mentioned problems, and aims to reduce the concentration of fine particles such as cleaning steam and droplets flowing from the cleaning section to the upper chamber in the upper chamber and cool them. The amount is smaller than the condensing capacity of the tube to prevent diffusion that occurs during cleaning.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention divides the inside of the collection tank into an introduction chamber to which a particulate introduction pipe is connected and a collection chamber filled with a collection liquid for dissolving particulates. divided into upper and lower parts,
An exhaust gap is provided between the partition wall and the collected liquid, and a downstream port through which the collected liquid flows out is formed in the introduction chamber, facing the upper part of the introduction opening opened in the partition wall, and the particulate particles connected to this introduction chamber are At the tip of the introduction pipe, form a tip inlet that connects to the upper chamber above the cleaning section provided in the cleaning tank, and locate the tip outlet in the upper chamber.The other end of the exhaust pipe is connected to the exhaust interval of the recovery chamber. It is made up of

Further, the introduction opening may be inserted into the recovery liquid through an introduction cylinder.

Further, the flow outlet and the introduction opening may be connected by a flow member to which the recovered liquid adheres and flows down. The fine particles may also be alcohol solvent vapor or alcohol solvent droplets. Moreover, the recovery liquid may be water.

Further, the fine particles may be vapor of a hydrocarbon solvent or droplets of a hydrocarbon solvent.

The particulates may also be terpene solvent vapor or terpene solvent droplets.

The fine particles may also be vapor or droplets of a composition comprising a terpene solvent and a terpene emulsifying surfactant.

The recovered liquid may also be water mixed with a surfactant. Function Since the present invention is configured as described above, when heating the solvent in the cleaning tank to generate cleaning steam, the cleaning steam in the cleaning section contacts the object to be cleaned and performs steam cleaning. After that, it flows into an upper chamber provided above the washing section.

In addition, in the cleaning section, when a shower of solvent is applied to the object to be cleaned, or when the solvent is sprayed at high pressure onto the object to be cleaned, solvent droplets are generated, and these droplets are deposited above the cleaning section. flows into the upper chamber.

In this way, when vapor, droplets, etc., flow into the upper chamber, if a recovered liquid such as water or water mixed with a surfactant is allowed to flow down from the outlet using an appropriate method such as activating a bomb. , the recovered liquid flows into the introduction opening of the partition wall located below facing the outlet, and a continuous liquid flow path for the recovered liquid is formed between the outlet and the introduction opening, and this liquid flow path As a result, a gas flow occurs in the introduction chamber from above in the direction of the introduction opening. Due to this gas flow, a suction force is applied in the direction l\ of the introduction chamber from the tip introduction port to the particulate introduction tube whose tip introduction port is located in the upper chamber above the cleaning section provided in the cleaning tank, and Indoor cleaning steam, droplets, and other fine particles are
It is forcibly drawn into the introduction chamber and is dissolved upon contact with the flowing recovery liquid. The dissolution and recovery of particles using this recovery liquid involves contact between particles and liquid, compared to conventional cooling tubes in which solids and vapor come into contact, so recovery efficiency is extremely high and excellent recovery effects can be obtained. In addition, the recovery liquid that has recovered the cleaning vapor flows into the recovery chamber with an introduction opening.
Since the gas in the introduction chamber is moved to the recovery chamber, the pressure in the exhaust gap provided between the partition wall and the recovery liquid is increased. This pressure increase causes the gas in the exhaust interval to be discharged from the tip inlet to the upper chamber via the exhaust pipe. The gas discharged into this upper chamber is
Since the gas exists between the recovery liquid and the partition wall, it contains almost no solvent particles, and the concentration of the solvent and particles in the upper chamber can be reduced.

Therefore, in the upper chamber, highly concentrated particulates are suctioned and discharged by the particulate introduction pipe, and gas containing almost no solvent is supplied by the exhaust pipe, so that the solvent concentration in the upper part is significantly reduced, which is not inherent in the cleaning equipment. The remaining particulates can be sufficiently condensed using cooling pipes and the like, and the diffusion of particulates to the outside can be reliably prevented.

Furthermore, if the introduction opening is inserted into the recovery liquid through the introduction tube, the recovery liquid flowing down from the introduction opening into the recovery chamber will not be scattered in the exhaust gap, and no noise will be generated.

Furthermore, by connecting the flow outlet and the inlet opening with a downstream member on which the recovered liquid adheres and flows down, it is possible to reliably guide the recovered liquid to the inlet opening, and to prevent turbulence from occurring in the flow of the recovered liquid. Since there is no water, it enables efficient suction that occurs during cleaning and quiet flow of collected liquid.

Further, fine particles include alcohol solvent vapor, alcohol solvent droplets, hydrocarbon solvent vapor or hydrocarbon solvent droplets, terpene solvent vapor or terpene solvent droplets, and vapor of a composition consisting of a terpene solvent and a terpene emulsifying surfactant. Alternatively, it may be droplets, and the recovery liquid is not particularly limited as long as it can be recovered by dissolving water, water mixed with a surfactant, or other solvents such as those mentioned above. EXAMPLE An example of the present invention will be described below with reference to the drawings.
1) is a recovery tank, which includes an introduction chamber (3) connected to a particle introduction pipe (2), and a recovery liquid (4) such as water and water mixed with a surfactant.
The collection chamber (5) filled with the introduction opening (7),
It is inserted into the recovery liquid (4) of the recovery chamber (5) through the introduction tube (8), and an exhaust gap (10) is provided between the recovery liquid (4) and the partition wall (6). .Also, the introduction opening (7) opened in the partition wall (6) is located above the building.
A gate 111 is formed at the upper end of the introduction chamber (3), and this flow outlet (11) and the recovery liquid in the recovery chamber (5) 4
) and the recovered liquid supply pipe (1) via the pump (12).
3), the recovered liquid (4) cooled by the cooler (14) is transferred from the outlet (11) to the inlet opening (
7), and a downstream outlet (11).
) and the introduction opening (7) are connected by a flowing down member (15) such as a wire, a plate, a chain, etc., on which the recovered liquid (4) adheres and flows down.

In addition, a tip inlet 16) is formed at the tip of the particle introduction tube (2) connected to the introduction chamber (3), and this tip inlet (16) is connected to the cleaning section provided in the cleaning tank (17). (18) Connects to the upper upper chamber (20), and this tip inlet (16)
A wide particulate suction port (21) is formed in the part. Also,
The distal end outlet (2) of the exhaust pipe (22) is located in the upper chamber (20) at a position closer to the cleaning section (18) than the particulate suction port (21).
3) and connect the other end of this exhaust pipe (22) to the exhaust gap (10) of the collection chamber (5) to open the exhaust port (
19).

Also, in the upper chamber (20) of the cleaning tank (17), there is a cooling chamber (20).
L/Kyuken Yusho l Na, Kyogoren Iri AS Kude King l → Tanaka 1 It condenses fine particles such as steam and droplets generated during purification. In addition, a heater (25) is installed in the cleaning tank (17).
) into which a steam generating section (26) is inserted, and a liquid washing section (28) into which a cooler (27) is inserted.
28) is connected to a recovery chamber (5) via an overflow pipe (31) via a water separator (30), and the overflow liquid from 5) is introduced into the recovery chamber.

In addition, the recovery tank 1), particulate introduction pipe 2), exhaust pipe (2)
2) etc. may be formed separately from the cleaning tank (17) and used by connecting to the already installed cleaning tank (17), or they can be used as an integrated device pre-assembled and fixed with the cleaning tank (17). It is good to use. Also installed cleaning tank (17)
To use it connected to a moving vehicle such as casters (32
) is placed on the bottom surface of the board (33) to facilitate movement.

Further, the solvent (34) to be used may be any solvent depending on the cleaning purpose, such as an alcohol solvent, a hydrocarbon solvent, a terpene solvent, or a composition consisting of a terpene solvent and a terpene emulsifying surfactant.

To use this in the configuration as described above,
Solvent (34) in the steam generator (26) in the cleaning tank (17)
is heated by the heater (25) to generate cleaning steam, the cleaning steam from the steam generating section (26) is transferred to the cleaning section (18).
After coming into contact with the object to be cleaned (35) and performing steam cleaning, it flows into the upper chamber (20) provided above the cleaning section (18). At this time, the recovered liquid (4) is guided to the outlet (11) through the recovered liquid supply pipe (13) by an appropriate method such as activating the pumping bomb (12), and is discharged from the outlet (11). When the collected liquid (4) is in contact with the flow member (15), it flows through the partition wall (6) facing below the flow outlet (11).
The recovered liquid (4) flows into the introduction opening (7) and flows between the downstream opening (11) and the introduction opening (7).
7), a continuous liquid flow path for the recovered liquid (4) is formed, and this liquid flow path allows air to flow into the introduction chamber (3) from above in the direction of the introduction opening (7). Flow occurs. This air flow causes the upper chamber (20
), the particle suction port (2) of the tip introduction port (16) is located in the particle introduction tube (2) in which the tip introduction port (16) is located.
A suction force is applied from 1) to the introduction chamber <3>, and the cleaning vapor in the upper chamber (20) is introduced into the introduction chamber (3) and comes into contact with the flowing recovery liquid (4), where it is dissolved and recovered. be done.

The recovery that occurs during cleaning with this recovered liquid (4) is compared to the conventional cooling pipe (24) where solids and steam come into contact with each other.
Since it involves contact between liquid and vapor, the condensation efficiency is extremely high and excellent recovery effects can be obtained.

In addition, the recovery liquid from which the cleaning vapor was collected 4) is connected to the introduction opening <7
) into the recovery chamber (5) and moves the gas in the introduction chamber (3) to the recovery chamber (5), so the exhaust interval provided between the partition wall (6) and the recovery liquid (4) (10) Increase the pressure inside. By this pressure increase, the gas in the exhaust interval (10) is passed from the tip inlet (16) through the exhaust pipe (22) to the upper chamber (
20). The gas discharged into the upper chamber (20) is the gas existing between the recovered liquid (4) and the partition wall (6), so it contains almost no solvent gas, and the upper chamber (20) contains almost no solvent gas.
20) can lower the vapor concentration within.

Therefore, the upper chamber (20) is sucked and discharged with highly concentrated cleaning vapor through the particle introduction pipe (2), and gas containing almost no solvent is supplied through the exhaust pipe (22). 20), and the remaining cleaning vapor can be sufficiently condensed by the cooling pipe (24》) originally provided in the cleaning tank (17), ensuring that the solvent vapor diffuses to the outside. can be prevented.

Furthermore, since the introduction opening (7) is inserted into the recovery liquid (4) through the introduction tube (8), the recovery liquid (4) flowing down from the introduction opening (7) into the recovery chamber (5) is , exhaust interval (10)
There is no scattering and no noise is generated.

In addition, the flow outlet (11) and the introduction opening (7) are connected to the recovery liquid (
By connecting with the downstream member (15) on which the collected liquid (4) is attached and flows down, it is possible to reliably guide the recovered liquid (4) to the introduction opening (7), and also prevent turbulence in the flowing down of the recovered liquid (4). Since no flow is generated, efficient suction of the cleaning vapor and quiet flow of the recovered liquid (4) are possible.

Further, in the above embodiment, cleaning is performed by heating the solvent (34) to generate steam, but in other different embodiments, the solvent (34) is showered onto the object to be cleaned, or the solvent Of course, it is also possible to spray (34) onto the object to be cleaned at high pressure, and these cleaning methods use solvent (34) at high pressure.
4) Droplets are generated, flow into the upper chamber (20) provided above the cleaning section (18), and are collected by the same action as in the above embodiment.

Effects of the Invention Since the present invention is configured as described above, by allowing the recovered liquid to flow down from the flow port to the introduction opening in the partition wall, air flows from above to below in the introduction chamber, and this air By using the flow of water, the particles such as steam and droplets in the upper chamber of the cleaning tank are forcibly sucked into the introduction chamber by the particle introduction pipe without using power such as a fan, and the particles generated during cleaning can be collected with gas or liquid. This can be carried out in an efficient state of contact, and compared to the conventional method of contact between a solid and steam in the form of a cooling tube, the recovery efficiency is extremely high and excellent recovery effects can be obtained.

In addition, the gas in the introduction chamber that collects fine particles such as steam and droplets is pressurized at the exhaust interval and gas that does not contain solvent is introduced into the upper chamber, making it possible to lower the concentration of fine particles in the upper chamber. Together with this, the concentration of particulates in the upper chamber is significantly reduced, and the remaining particulates can be sufficiently condensed and recovered using the cooling pipes etc. that are originally provided in the cleaning equipment.
This can reliably prevent the diffusion of solvent particles to the outside.

[Brief explanation of drawings]

Claims (9)

[Claims] (1) Inside the collection tank, an introduction chamber to which a particulate introduction pipe is connected,
A recovery chamber filled with a recovery liquid for dissolving fine particles is divided vertically by a partition wall, an exhaust gap is provided between the partition wall and the recovery liquid, and the collection chamber is placed facing the upper part of an introduction opening opened in the partition wall. A downstream port through which the collected liquid flows out is formed in the introduction chamber, and a tip introduction port is formed at the tip of the particle introduction pipe connected to this introduction chamber to connect to the upper chamber above the cleaning section provided in the cleaning tank. A collection device for particulates generated during cleaning, characterized in that the other end of the exhaust pipe is connected to the exhaust interval of the collection chamber. (2) The apparatus for collecting particulates generated during cleaning according to claim 1, wherein the introduction opening is inserted into the collection liquid through an introduction cylinder. (3) The apparatus for collecting particulates generated during cleaning according to claim 1, wherein the flow port and the introduction opening are connected by a flow member to which the collection liquid adheres and flows down. (4) The apparatus for collecting particulates generated during cleaning according to claim 1, wherein the particulates are alcohol solvent vapor or alcohol solvent droplets. (5) Claim 1, wherein the recovered liquid is water;
4. A device for collecting fine particles generated during cleaning as described in 4. (6) The apparatus for collecting particulates generated during cleaning according to claim 1, wherein the particulates are vapor of a hydrocarbon solvent or droplets of a hydrocarbon solvent. (7) The apparatus for collecting fine particles generated during cleaning according to claim 1, wherein the fine particles are terpene solvent vapor or terpene solvent droplets. (8) The device for collecting fine particles generated during cleaning according to claim 1, wherein the fine particles are vapor or droplets of a composition comprising a terpene solvent and a terpene emulsifying surfactant. (9) The device for collecting fine particles generated during cleaning according to any one of claims 1, 4, 6, 7, and 8, wherein the recovery liquid is water mixed with a surfactant.