JP2006292261A - Dryer and steam cleaner for cleaning object - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform the continuous and efficient vacuum seam cleaning work or vacuum drying work of a cleaning object using a belt conveyor. <P>SOLUTION: An upper covering body 12 covering and sealing the cleaning object 11 placed on the upper surface of the belt conveyor 1 from above is formed. A lower covering body 10 arranged on the lower surface of the belt conveyor 1 to communicate with the upper covering body 12 through a distribution hole 26 formed through the belt conveyor 1, and airtightly sealing the cleaning object 11 with the upper covering body 12 is formed. A pressure reducing mechanism 13 provided with a solvent recovering function and a steam supply mechanism 16 supplying cleaning steam into the upper covering body 12 are connected to the upper covering body 12 or the lower covering body 10. The covering bodies are vertically movable to the upper surface of the belt conveyor 1 so that the vacuum steam cleaning of the cleaning object 11 sealed and stored in the upper covering body 12 can be performed, and the cleaning object 11 can be put in and out. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an apparatus for drying an object to be cleaned such as a machine part, an electronic part, and a food after drying is completed, and an apparatus for cleaning an object to be cleaned for steam cleaning the object to be cleaned. Thus, an efficient and quick drying or steam cleaning operation is possible using a belt conveyor.

Conventionally, in order to dry an object to be cleaned or to perform steam cleaning, as shown in Patent Document 1, the object to be cleaned is disposed in a fixedly arranged steam cleaning tank or drying tank, and the cleaning operation or the drying operation is performed. Was common. In addition, as shown in Patent Documents 2 to 5, there are some that perform continuous cleaning work efficiently using a belt conveyor.
Japanese Patent No. 3011706 JP 2004-8990 A JP 2001-246332 A JP 2000-78962 A JP 2000-323029 A

  However, as shown in Patent Document 1, in the case where an object to be cleaned is disposed in a fixedly arranged cleaning tank or steam drying tank to perform a steam cleaning operation or a drying operation, liquid cleaning, steam cleaning, Even if it is necessary to move multiple tanks when performing drying, etc., or liquid cleaning, steam cleaning, drying, etc. can be performed in one tank, it takes a lot of work and time to switch work. It was necessary. For this reason, the steam cleaning operation and the drying operation cannot be performed quickly, and the efficiency of the cleaning and drying is poor.

  In addition, as shown in Patent Documents 2 to 5, there are some which perform a continuous cleaning operation using a belt conveyer. However, these conventional techniques perform cleaning by spraying a cleaning liquid on an object to be cleaned, and a cleaning liquid. The object to be cleaned, which has been cleaned by spraying, has been dried using hot air or infrared rays. However, it was impossible to perform vacuum steam cleaning or vacuum drying using a belt conveyor.

  The present invention is intended to solve the above-described problems, and is intended to enable continuous and efficient reduced-pressure steam cleaning work or reduced-pressure drying work of an object to be cleaned using a belt conveyor. .

  In order to solve the above-mentioned problems, the present invention relates to an apparatus for drying an object to be cleaned. An upper covering for covering and sealing an object to be cleaned placed on the upper surface of a belt conveyor from the upper surface. The body and the upper covering body are arranged on the lower surface of the belt conveyor and communicated with the upper covering body through a through hole formed in the belt conveyor so that the object to be cleaned is hermetically sealed together with the upper covering body. It consists of a lower covering that can be made and a decompression mechanism that is connected to the upper covering or the lower covering and has a solvent recovery function. The covered body can be moved up and down with respect to the upper surface of the belt conveyor so that an object to be cleaned can be put in and out.

  Further, the second invention relates to a steam cleaning apparatus for an object to be cleaned, and corresponds to the upper covering body which covers and seals the object to be cleaned placed on the upper surface of the belt conveyor from the upper surface. A lower covering which is disposed on the lower surface of the belt conveyor and communicates with the upper covering through a circulation hole formed through the belt conveyor, and allows the object to be cleaned to be hermetically sealed together with the upper covering, and the upper covering. It consists of a decompression mechanism with a solvent recovery function connected to the body or the lower sheath, and a steam supply mechanism that supplies cleaning steam into the upper sheath, enabling decompression steam cleaning of the object to be cleaned enclosed in the upper sheath At the same time, the upper covering can be moved up and down with respect to the upper surface of the belt conveyor so that the object to be cleaned can be put in and out.

  In addition, the steam supply mechanism for the cleaning steam is arranged with a steam generation tank facing the lower surface of the belt conveyor, and the cleaning steam generated from the steam generation tank is passed through the cleaning steam flow hole provided in the belt conveyor. And may be supplied into the upper covering body.

  Further, the lower covering may be formed by closely contacting the upper end opening of the steam generating tank to the lower surface of the belt conveyor corresponding to the upper covering.

  Further, the belt conveyor may be provided with a liquid cleaning mechanism for an object to be cleaned as a pre-process of the work process on the upper covering.

  Since the present invention is configured as described above, when the object to be cleaned is dried, the object to be cleaned that has been cleaned in the previous process is placed on the upper surface of the belt conveyor, and the belt is placed at the lower surface position of the raised upper covering. After moving the object to be cleaned on the conveyor, if the upper cover is lowered, the object to be cleaned is sealed by the upper cover and the position corresponding to the lower surface of the belt conveyor is sealed by the lower cover. Operates and allows the object to be cleaned to be dried under reduced pressure. In this depressurization, since the upper covering and the lower covering are communicated with each other through the circulation hole of the belt conveyor, the upper and lower surfaces of the belt conveyor are balanced in pressure and the belt conveyor is not deformed. Moreover, since the upper covering body or the lower covering body communicates through the flow holes regardless of whether the decompression mechanism is connected to the upper covering body or the lower covering body, the same effect can be obtained, and the design freedom can be obtained. It is possible to increase the degree. And after completion of reduced pressure drying, if the upper covering is raised and the belt conveyor is operated, the dried object to be cleaned can be easily transferred to the next step. At the same time, the object to be cleaned that has been cleaned in the previous process can be transferred to the lower surface of the upper covering. In this way, the object to be cleaned can be continuously dried, so that quick and efficient drying is possible.

  In addition, even in the steam cleaning operation of the object to be cleaned, if the cleaning steam is introduced from the cleaning steam supply mechanism at the stage where the object to be cleaned is introduced into the upper sheath, the object to be cleaned can be cleaned with steam. Become. In addition, if the pressure reducing mechanism is operated to reduce the pressure inside the upper covering body, the reduced pressure steam cleaning can be performed, the steam can be generated at a low boiling point, and the flammable solvent can be cleaned safely. In addition, since the upper covering body or the lower covering body is communicated through the flow hole, the supply of the cleaning vapor can obtain the same effect in any of the upper covering body or the lower covering body, and the design freedom It is possible to increase the degree. In addition, after completion of the cleaning operation, the introduction of cleaning steam can be stopped to increase the degree of vacuum, and bump drying can be performed. Further, after the drying is completed, if the decompression in the upper covering body is released and the upper covering body is raised, the object to be cleaned that has been dried can be transferred to the next step.

  Hereinafter, an embodiment of the present invention will be described with reference to FIG. 1. Reference numeral (1) denotes a belt conveyor which is connected to an appropriate number of pulleys (2) to be rotatable. This belt conveyor (1) may be used alone, but the same transfer source conveyor (3) and transfer destination conveyor (4) may be arranged in the transfer source direction and the transfer destination direction according to the work purpose. .

  A liquid cleaning mechanism (5) is arranged in the direction of the transfer source of the belt conveyor (1). This liquid washing mechanism (5) is arranged on the lower surface of the belt conveyor (1) and on the upper surface of the belt conveyor (1). The shower liquid tank (6) is a pump (7). And a shower nozzle (9) connected via a filter (8).

  In addition, the object to be cleaned (11) placed on the upper surface of the belt conveyor (1) can be hermetically sealed and stored in the direction of the transfer destination of the belt conveyor (1) facing the upper surface of the belt conveyor (1). An upper covering body (12) having a U-shaped cross section is arranged. The upper covering (12) is hermetically sealed by closely attaching a packing (15) such as an O-ring installed at the lower end of the upper covering (12) to the belt conveyor (1). A pressure reducing mechanism (13) having a solvent recovery function is connected to the upper covering body (12) via a suction on-off valve (14), so that the object to be cleaned (11) can be dried under reduced pressure. The upper cover 12 is connected to an air cylinder, an oil cylinder, a ball screw, and other appropriate vertical movement mechanisms (not shown) so as to be movable up and down. The object to be cleaned (11) can be introduced into the lower surface, and the object to be cleaned (11) can be moved in the direction of the transfer destination. The inside can be depressurized in close contact with the upper surface of 1).

  A lower covering (10) is disposed on the lower surface side of the belt conveyor (1) corresponding to the upper covering (12). The lower covering (10) communicates with the upper covering (12) through a flow hole (26) formed through the belt conveyor (1), and the object to be cleaned (11) together with the upper covering (12). Can be hermetically sealed. The lower covering (10) also serves as a steam generation tank (20) of the cleaning steam supply mechanism (16), and the steam supply mechanism (16) has an opening (17) at the upper end as a belt. A steam generation tank (20) that can be brought into close contact with the lower surface of the conveyor (1) through an upper end packing (18) and a cleaning liquid (21) filled in the steam generation tank (20) are heated to generate cleaning steam. It comprises a heater (22) to be generated. Further, the steam generation tank (20) is connected to a liquid storage tank (23) for storing the cleaning liquid (21) filled therein via a drainage on-off valve (24). The liquid storage tank (23) is connected to the steam generation tank (20) via a pump (7), a filter (8) and a liquid supply valve (25). In addition, a cleaning steam liquid supply valve (25) is opened in the belt conveyor (1) between the steam generation tank (20) and the upper covering body (12), and the cleaning steam generated in the steam generation tank (20) is supplied. It can be introduced into the upper covering (12).

  The steam generation tank (20), which also serves as the lower covering (10) of the cleaning steam supply mechanism (16), can be moved up and down in the same manner as the upper covering (12). It adjusts the degree of adhesion between the lower surface of 1) and the upper surface of the steam generation tank (20), and does not move up and down as much as the upper cover (12) moves up and down.

  In order to dry the object to be cleaned (11) in the configuration as described above, the object to be cleaned (11) cleaned in the previous process is placed on the upper surface of the belt conveyor (1), and the upper covering body is placed. (12) is raised and the object (11) to be cleaned is moved to the lower surface position of the upper covering (12) by the belt conveyor (1). The cleaning process in the previous step of the object to be cleaned (11) is performed by the liquid cleaning mechanism (5) arranged in the transfer source direction from the upper covering body (12). This liquid cleaning is performed by pumping the cleaning liquid (21) from the shower liquid tank (6) disposed on the lower surface of the belt conveyor (1) through the pump (7) and the filter (8) and then covering the liquid from the shower nozzle (9). This is done by spraying on the cleaning object (11). Further, the liquid cleaning as the preceding process is not necessarily performed on the belt conveyor, and the object to be cleaned (11) subjected to the liquid cleaning at a separate position is placed on the belt conveyor (12) at the lower surface position of the upper covering (12). The object to be cleaned (11) may be moved in 1).

  The object to be cleaned (11), which has been processed in the previous process, is transferred by the belt conveyor (1) and placed facing the lower surface of the upper covering (12), and then the upper covering (12) is moved up and down. When it is lowered by operating (not shown), the object to be cleaned (11) is sealed at the upper surface position of the belt conveyor (1) by the upper covering (12). At this time, the steam generation tank (20) that also serves as the lower covering (10) is also arranged on the lower surface of the belt conveyor (1) corresponding to the upper covering (12), and the upper covering ( 12) It will be in a communication state. In this sealed state, the suction on-off valve (14) is opened, and the decompression mechanism (13) such as a vacuum pump is operated to dry the object to be cleaned (11) under reduced pressure. Further, in this vacuum drying state, the upper covering body (12) and the lower covering body (10) are in communication with each other through the flow hole (26), so that the pressure is balanced and the belt conveyor (1) is deformed. There is nothing to do.

  After the vacuum drying is completed, the vacuum release valve (27) is opened, the upper covering (12) is raised, and the belt conveyor (1) is operated. It can be transferred to the process. At the same time, the object to be cleaned (11) which has been cleaned in the previous process can be transferred to the lower surface of the upper covering (12). In this way, since the object to be cleaned (11) can be continuously dried, quick and efficient drying is possible.

  In the first embodiment, the case where the object to be cleaned (11) is used as a drying device in the first invention is shown. However, in the second invention, the apparatus is used as a vacuum steam cleaning device for the object (11) to be cleaned. The embodiment which has been described will be described below. When performing the steam cleaning operation of the object to be cleaned (11), the object to be cleaned (11) is placed in the upper portion in the same manner as the object to be cleaned (11) is introduced into the upper covering (12) in the drying step. At the stage of introduction into the covering (12), cleaning steam is introduced from the steam generation tank (20) through the circulation hole (26) opened to the belt conveyor (1). The cleaning steam can be condensed by condensing the cleaning steam on the surface of the object to be cleaned (11). When the pressure reducing mechanism (13) is operated to depressurize the upper covering (12), the upper covering (12) and the steam generation tank (20) communicate with each other through the flow hole (26). Therefore, it is possible to perform vacuum steam cleaning in the upper covering body (12). Therefore, it is possible to generate steam at a low boiling point and to safely perform steam cleaning using a flammable solvent.

  Further, after the cleaning operation is completed, the introduction of the cleaning vapor into the upper covering (12) is stopped by opening the drainage on-off valve (24) and transferring the cleaning liquid (21) to the liquid reservoir (23). After that, the degree of vacuum is increased and bumping drying can be performed. After the drying of the object to be cleaned (11) is completed, the vacuum release valve (27) is opened to release the reduced pressure in the upper covering (12), and the upper covering (12) is lifted to complete the drying. The cleaning object (11) can be transferred to the next process by the belt conveyor (1).

  In the above embodiment, the cleaning steam used for cleaning the object to be cleaned (11) is provided with a cleaning steam supply mechanism (16) on the lower surface side of the belt conveyor (1), and the lower covering (10). ) And the steam generation tank (20), and the cleaning steam is introduced from the cleaning steam flow hole (26) opened in the belt conveyor (1). 16) is formed at a position completely different from the belt conveyor (1), and the cleaning steam is supplied to the lower covering (10) or the upper covering (12) from the separately formed cleaning steam supply mechanism (16). It may be supplied. In this case, the lower covering (10) is formed separately from the steam generation tank (20) and is used independently.

  Further, in each of the above embodiments, the pressure reducing mechanism (13) is connected to the upper covering body (12) side, but the upper covering body (12) and the lower covering body (10) are connected through the flow hole (26). Therefore, there is no problem even if the pressure reducing mechanism (13) is connected to the lower covering (10) side.

Sectional drawing which shows 1st Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Belt conveyor 5 Liquid washing | cleaning mechanism 10 Lower covering body 11 To-be-cleaned object 12 Upper covering body 13 Decompression mechanism 16 Steam supply mechanism 20 Steam generating tank 26 Flow hole

Claims (6)

  An upper covering that covers and seals the object to be cleaned placed on the upper surface of the belt conveyor from the upper surface, and is arranged on the lower surface of the belt conveyor corresponding to the upper covering and through a through hole formed through the belt conveyor. A lower covering which communicates with the upper covering and allows the object to be cleaned to be hermetically sealed together with the upper covering, and a pressure reducing mechanism connected to the upper covering or the lower covering and having a solvent recovery function. The object to be cleaned enclosed in the upper covering can be dried under reduced pressure, and the upper covering can be moved up and down with respect to the upper surface of the belt conveyor so that the object to be cleaned can be moved in and out. A drying device for the object to be cleaned.   An upper covering that covers and seals the object to be cleaned placed on the upper surface of the belt conveyor from the upper surface, and is arranged on the lower surface of the belt conveyor corresponding to the upper covering and through a through hole formed through the belt conveyor. A lower covering that communicates with the upper covering and allows the object to be cleaned to be hermetically sealed together with the upper covering, a pressure reducing mechanism that is connected to the upper covering or the lower covering and has a solvent recovery function, Consisting of a steam supply mechanism for supplying cleaning steam into the covering body, the belt allows the object to be cleaned contained in the upper covering body to be subjected to reduced-pressure steam cleaning, and the upper covering body can be moved in and out of the covering object. A steam cleaning apparatus for an object to be cleaned, which is capable of moving up and down with respect to the upper surface of the conveyor.   The steam supply mechanism for the cleaning steam is arranged with a steam generation tank facing the lower surface of the belt conveyor, and the cleaning steam generated from this steam generation tank is placed above the cleaning steam through the circulation hole provided in the belt conveyor. The steam cleaning apparatus for an object to be cleaned according to claim 2, wherein the apparatus is supplied into a covering body.   3. The steam cleaning apparatus for an object to be cleaned according to claim 2, wherein the lower covering is formed by closely contacting the upper end opening of the steam generating tank to the lower surface of the belt conveyor corresponding to the upper covering.   2. The apparatus for drying an object to be cleaned according to claim 1, wherein a liquid cleaning mechanism for the object to be cleaned is arranged on the belt conveyor as a pre-process of the work process on the upper covering.   3. The apparatus for cleaning a vapor of an object to be cleaned according to claim 2, wherein a liquid cleaning mechanism for the object to be cleaned is arranged on the belt conveyor as a pre-process of the work process on the upper covering.