JP5628392B2 - Environmentally-friendly integrated pallet cleaning and drying device with air circulation drying structure - Google Patents

Description

  The present invention relates to an environmentally friendly integrated pallet cleaning and drying apparatus having an air circulation drying structure, and more specifically, by minimizing the amount of pallet produced by cleaning and reusing a contaminated pallet, Compared to the traditional method of cleaning and drying pallets while passing through a series of lines, reducing raw materials used, saving equipment and simplifying equipment installation and equipment installation The present invention relates to an environment-friendly integrated pallet cleaning and drying apparatus having an air circulation drying structure capable of reducing the area, energy used, and operation cost.

  A pallet having a certain form is a means for easily placing a semi-finished product or a produced finished product in the process of producing a product on the upper surface. In general, a rectangular pallet has a box-like structure having a certain height, in which a groove into which a fork of a forklift is inserted is formed at a lower part so that the forklift can be easily transferred.

  Usually, outside the production site, raw materials and auxiliary materials are placed on a pallet and food is transferred depending on the situation. Therefore, various foreign substances such as food and dust come to adhere to the upper and lower parts of the pallet when used for a long time.

  Therefore, there is a possibility that the surface of the raw material or auxiliary material placed on the pallet is contaminated by the foreign matter, or the foreign matter is thrown into the product during the manufacturing process. In particular, when producing processed foods, it is necessary to remove foreign matters and dirt attached to the pallet in order to prevent the raw materials from being exposed to various bacteria.

  Conventionally, when pallets are washed, the pallets are washed one by one manually by an operator, but recently, the pallets are automatically washed by an automated facility. Thereby, a large amount of pallets can be easily cleaned, and the efficiency of work increases. Further, when the pallet is automatically cleaned, a lot of labor is not required, so that the cleaning cost can be reduced.

  However, such a conventional automatic cleaning apparatus includes an input unit that inputs stacked pallets one by one, a cleaning unit that sprays cleaning water, a dehydration unit that dehydrates the pallet, and an air injection unit that dries the pallet. In addition, there are provided at least two laminating portions for laminating the pallets that have been cleaned, and the path of the process becomes long in order to perform the cleaning operation in the order of these processes. Therefore, the size of the cleaning device increases, which increases the price and operating cost of the cleaning device.

  In addition, since the pallet passes through the cleaning section only once in the past, the pallet may not be sufficiently cleaned to remove foreign matter and dirt completely. Therefore, there are many cases where foreign matter or dirt remains on the pallet even after cleaning.

  In order to solve such problems, Patent Documents 1 to 4 disclose that in the process of placing and transferring a pallet on a conveyor belt inside a chamber, jetting cleaning water while rotating the pallet, An integrated pallet cleaning device for drying a pallet has been proposed.

Korean Patent Publication No. 10-2011-0033390 Korean Patent Publication No. 10-2011-0045422 Registered Utility Model No. 3073657 Publication Japanese Patent Laid-Open No. 2002-028586

  In the above-described integrated pallet cleaning apparatus, since the pallet is cleaned and dried inside one chamber, it seems that the conventional problems are improved to some extent. However, the size of the fixed chuck must be adjusted at any time according to the size of the pallet entering the chamber. In particular, in order to fix the pallet to the fixed chuck, the pallet must be raised to a high level. Accordingly, there is a problem that the cleaning water for cleaning the pallet and the pressure of the air for removing moisture are lowered, and the cleaning and drying ability is lowered, while the standard of the chamber is increased.

  Further, in the drying process, after the hot air is applied to the pallet for drying, the waste heat must be discharged to the outside. Thereby, energy is wasted due to the generation of hot air, and the structure of the cleaning facility becomes complicated. Further, since a large amount of moisture is contained in the air in the hot air drying process, there are problems such as an increase in the number of processes due to moisture removal, a reduction in drying quality, and a delay in drying time.

  The present invention, which has been made in order to solve the above-mentioned problems, can appropriately cope with the size of the pallet regardless of the size of the pallet by automatically adjusting the width of the fixing portion for gripping the pallet with a hydraulic cylinder. The pallet can be firmly fixed, and in particular, the lifting interval for fixing the pallet to the fixed part can be minimized to increase the pressure of cleaning water for pallet cleaning and air for air removal, thereby significantly improving cleaning and drying capacity At the same time, it is an object of the present invention to provide an environmentally friendly pallet cleaning and drying apparatus having an air circulation drying structure capable of reducing the standard of the chamber.

  Another object of the present invention is to use the circulating air inside the chamber in the process of drying the cleaned pallet without blowing hot air with another power, and it contains a large amount of moisture during the air circulation. Another object of the present invention is to provide an environment-friendly pallet cleaning and drying device having an air circulation drying structure that can effectively remove moisture from the air that is present and that can increase the temperature of the air.

  In order to achieve the above-mentioned object, an environment-friendly integrated pallet cleaning and drying apparatus having an air circulation drying structure according to the present invention includes a conveyor belt for transferring a pallet into a chamber in which an inlet and an outlet are formed. A stopper operated by a stopper cylinder for stopping the pallet that has entered the chamber; a mounting plate for raising the stopped pallet; and a pallet lifting unit including a lifting cylinder; for holding and fixing the pallet A first fixed cylinder provided with a first extending rod having a fixed chuck that can protrude hydraulically on both sides of the pallet in a direction perpendicular to the traveling direction, and a second extending rod that protrudes forward and backward along the traveling direction of the pallet by the hydraulic pressure. The first and second fixed cylinders are connected to each other by a connecting base. A rotation fixing portion comprising a main shaft for rotating the pallet, a drive motor for driving the main shaft, and a belt for transmitting the rotational force of the drive motor to the main shaft; a storage tank provided at the lower outer portion of the chamber A cleaning unit that includes a discharge port connecting the inclined bottom surface of the chamber and the storage tank, and a filter provided in the discharge port, and sprays cleaning water onto the pallet through a cleaning water supply pipe and a spray nozzle by the operation of the pump; In the integrated pallet washing and drying apparatus including an air knives for injecting air onto the pallet to dry the pallet, the pallet fixing part is a second extending rod formed on the second fixed cylinder Provided with a rotation chuck that is provided at the end of the rod and that rotates vertically with respect to the stretching rod by hydraulic pressure, the second stretching rod Inserted into the second fixed cylinder, the rotating chuck rotates to grip the front and rear surfaces of the pallet, the air injection part is a turbo fan provided at the upper and lower parts outside the chamber, and one end is inside the chamber The other end is connected to the turbofan, and includes an intake pipe and an exhaust pipe for circulating the air in the chamber, and the air injection section is provided at the end of the intake pipe and is included in the air. And a heat exchanger provided with an evaporator provided at an end of the exhaust pipe to increase the temperature of the exhaust, the air knife is provided in the heat exchanger, and the air injection The unit further includes a compressor and an expansion valve connected to the condenser and the evaporator, so that the compressed, condensed, expanded, and evaporated refrigerant passes through the condenser and the evaporator while passing through the chamber. The internal circulating air is heated and cooled.

  Here, the pallet fixing part further includes a hydraulic device that is provided on the bottom surfaces of the first and second fixing cylinders and supplies pressure oil to the first and second extending rods and the rotating chuck, and is raised by the pallet lifting part. When the upper surface of the pallet to be pressed presses the hydraulic device, the first and second stretching rods and the rotating chuck are preferably operated by the supplied hydraulic pressure.

  The main shaft provided inside the chamber has a fixed tube provided around it via a bearing, a number of supports fixed at one end to the outer periphery of the fixed tube and the other end fixed to the inner wall surface of the chamber. It is preferable that the main shaft is stably rotated by the fixed pipe and the support base.

  Furthermore, it is preferable that the air injection unit further includes a washing water blocking curtain provided outside the evaporator, and prevents water scattered by centrifugal force from entering the condenser during rotational dehydration of the pallet. .

  The environment-friendly integrated pallet cleaning and drying device having the air circulation drying structure of the present invention configured as described above can fix the pallet regardless of the size of the pallet by the pallet fixing part, so that the workability is further improved. improves. In particular, the rotating chuck provided at the end of the second fixed cylinder of the pallet fixing part is rotated vertically with respect to the stretching rod, and the cleaning interval and the drying performance are improved by minimizing the lifting interval of the pallet, The effect of reducing the chamber specification is obtained.

  Also, when the air flows into the turbo fan using the temperature of the air circulating inside the chamber by the turbo fan, the moisture contained in the air is removed, and at the time of discharge, the temperature of the dry air is increased by dehumidification. By discharging at a high pressure, the effect of further improving the drying efficiency can be obtained.

It is side surface sectional drawing of the environmental protection integrated pallet washing | cleaning and drying apparatus which has an air circulation drying structure which concerns on this invention. It is a top view which shows the environmental friendly integrated pallet washing | cleaning and drying apparatus pallet fixing | fixed part which has the air circulation drying structure which concerns on this invention. It is a perspective view which shows the pallet fixing | fixed part of the environmental protection integrated pallet washing | cleaning and drying apparatus which has an air circulation drying structure based on this invention. It is a top sectional view showing the main shaft support state of the environmentally friendly integrated pallet cleaning and drying apparatus having the air circulation drying structure according to the present invention. It is side surface sectional drawing which shows the air injection part of the environmental protection integrated pallet washing | cleaning and drying apparatus which has an air circulation drying structure which concerns on this invention. It is a flowchart which shows the operation | movement order of the environmental protection integrated pallet washing | cleaning and drying apparatus which has an air circulation drying structure which concerns on this invention. It is a schematic diagram which shows the concept of the pallet throwing-in and transfer operation | movement of an environmental protection integrated pallet washing | cleaning and drying apparatus which has an air circulation drying structure which concerns on this invention. It is a schematic diagram which shows the concept of the pallet stop operation | movement of an environmental protection integrated pallet washing | cleaning and drying apparatus which has an air circulation drying structure which concerns on this invention. It is a schematic diagram which shows the concept of the pallet raising / lowering operation | movement of the environmental protection integrated pallet washing | cleaning and drying apparatus which has an air circulation drying structure which concerns on this invention. It is a schematic diagram which shows the concept of the pallet fixing operation | movement of the environmental protection integrated pallet washing | cleaning and drying apparatus which has an air circulation drying structure which concerns on this invention. It is a schematic diagram which shows the concept of washing | cleaning water injection operation | movement of the environmental protection integrated pallet washing | cleaning and drying apparatus which has an air circulation drying structure which concerns on this invention. It is a schematic diagram which shows the concept of the pallet rotation operation | movement of the environmental protection integrated pallet washing | cleaning and drying apparatus which has an air circulation drying structure which concerns on this invention. It is a schematic diagram which shows the concept of the air injection operation | movement of the environmental protection integrated pallet washing | cleaning and drying apparatus which has an air circulation drying structure which concerns on this invention. It is a schematic diagram which shows the concept of the pallet discharge | emission and transfer operation | movement of an environmental protection integrated pallet washing | cleaning and drying apparatus which has an air circulation drying structure which concerns on this invention.

  Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  FIG. 1 is a side sectional view of an environmentally friendly pallet cleaning and drying apparatus having an air circulation drying structure according to the present invention. As shown in FIG. 1, an environmentally integrated pallet cleaning and drying apparatus having an air circulation drying structure according to the present invention includes a chamber 10 constituting a main body of a drying apparatus, a conveyor belt 100 for transferring a pallet 20, and a pallet. 20, a pallet elevating unit 300, a pallet fixing unit 400, a rotation operation unit 500 for rotating the pallet 20, a cleaning unit 600 for cleaning and drying the pallet 20, and an air injection unit 700. The

  Here, the box-shaped chamber 10 has an inlet 11 that is opened and closed by a door on one side, and the pallet 20 is put into the chamber 10 through the inlet 11. The chamber 10 includes an outlet 12 that is opened and closed by a door on the other side facing the inlet 11, and the pallet 20 is discharged through the outlet 12. A large number of support legs 13 and 13 ′ are fixed to the lower part of the chamber 10 so as to support the chamber 10 at a predetermined distance from the ground.

  A conveyor belt 100 provided inside the chamber 10 is horizontally disposed between the inlet 11 and the outlet 12. At this time, it is preferable that the pair of conveyor belts are arranged in two rows at a constant interval. The pallet 20 entering from the outside of the chamber 10 is placed on the conveyor belt 100 and moves inside the chamber 10.

  The stopper 200 is for preventing the movement of the pallet 20 inside the chamber 10 and includes a stopper cylinder 210 mounted horizontally between the pair of conveyor belts 100. The stopper cylinder 210 is provided with a cylinder load 210a so that it can protrude, and the stopper 200 is rotated in a vertical plane by the stopper cylinder 210. As a result, the movement of the pallet 20 located at the center inside the chamber 10 is prevented.

  The pallet elevating unit 300 provided on the inner bottom surface of the chamber 10 is for elevating the pallet 20. An elevating cylinder 310 having a cylinder load 310a is suspended from the bottom surface of the chamber 10, and a mounting plate 320 on which the bottom surface of the pallet 20 is mounted is coupled to an end of the cylinder load 310a through a bearing. The pallet 20 located at the center of the chamber 10 is moved upward by the cylinder load 310a. When the pallet 20 is rotated, the mounting plate 320 coupled through the bearing can also be rotated together.

  The pallet fixing unit 400 is for holding and fixing the pallet 20 that has entered the chamber 10. As shown in FIGS. 2 and 3, at the end of a main shaft 510 of the rotation operating unit 500 described later, first fixed cylinders 410 project horizontally on both sides in the direction perpendicular to the direction of travel of the pallet 20. The second fixed cylinders 420 are horizontally provided on both sides of the pallet 20 in the traveling direction. The first and second fixed cylinders 410 and 420 are configured to face the four surfaces of the pallet 20, and the first and second fixed cylinders 410 and 420 are connected to and supported by a plurality of connection bases 450. It has become.

  Here, the first fixed cylinder 410 is preferably configured to have a length that does not exceed the outer peripheral surface from the center of the pallet 20. One end of the first extending rod 411 is inserted into one side of the first fixed cylinder 410 and is configured to be able to protrude from the first fixed cylinder 410 by hydraulic pressure.

  The other end of the first extending rod 411 is provided with one or more fixed chucks 412 protruding downward. When the first extending rod 411 is inserted into the first fixed cylinder 410, the inner surface of the fixed chuck 412 grips both outer peripheral surfaces perpendicular to the moving direction of the pallet 20.

  The second fixed cylinder 420 is preferably configured to have a length that does not exceed the outer peripheral surface from the center of the pallet 20. One end of the second extending rod 421 is inserted into one side of the second fixed cylinder 420 and is configured to be able to protrude from the second fixed cylinder 420 by hydraulic pressure.

  On the other hand, in the present invention, the other end of the second extending rod 421 is provided with a rotating chuck 422 that is rotated from the horizontal to the vertical by hydraulic pressure. Usually, the rotating chuck 422 is positioned horizontally like the second stretching rod 421. When the rotating chuck 422 rotates vertically with respect to the extending rod and the second extending rod 421 is inserted into the second fixed cylinder 420, the inner surface of the rotating chuck 422 is around the outer periphery of the pallet 20 in the traveling direction. It is designed to grip the surface.

  Here, the rotating chuck 422 is positioned horizontally with respect to the second fixed cylinder 420 and the second extending rod 421 during non-operation, that is, during normal operation, and rotates vertically with respect to the extending rod so as to be directed downward during operation. It has a moving structure. The pallet 20 may be raised to a predetermined height from the upper surface of the conveyor belt 100, that is, a minimum height away from the upper surface of the conveyor belt 100. With this structure, the size of the elevating cylinder 310 of the pallet elevating unit 300 can be reduced, and the standard of the chamber 10 can be reduced.

  Meanwhile, the environment-friendly integrated pallet washing and drying apparatus having the air circulation drying structure of the present invention further includes a hydraulic device 440 on the bottom surfaces of the first and second fixed cylinders 410 and 420 of the pallet fixing unit 400. The hydraulic device 440 supplies pressure oil to the first and second stretching rods 411 and 421 and the rotating chuck 422. When the upper surface of the pallet 20 presses the hydraulic device 440 by the operation of the pallet elevating unit 300, the first and second extending rods 411 and 421 and the rotating chuck 422 are operated by the supplied pressure oil. Features.

  And it is preferable that the 1st and 2nd fixed cylinder 410,420 and the 1st and 2nd extending | stretching rod 411,421 have the shape of a circular rod or a circular tube. This is because when the cleaning water is sprayed from the spray nozzle 660 of the cleaning unit 600 described later, the pallet 20 upper surface, the first and second fixed cylinders 410 and 420, and the first and second stretching rods 411 and 421 are interposed. This is so that the washing water can sufficiently enter.

  The rotation operation unit 500 includes a main shaft 510 to which the centers of the first and second fixed cylinders 410 and 420 of the pallet fixing unit 400 are coupled at the lower stage. The main shaft 510 is connected to a drive motor 520 provided outside the chamber 10 via a belt 530. The drive motor 520 mounted outside the chamber 10 can rotate forward and backward. When the main shaft 510 is rotated by the operation of the drive motor 520, the pallet 20 fixed to the pallet fixing part 400 is rotated at the same time as the pallet fixing part 400 is rotated.

  On the other hand, as shown in FIG. 4, a fixed pipe 512 is provided on the outer periphery of the main shaft 510 disposed inside the chamber 10 via a bearing, and a large number of supports projecting in four horizontal directions are provided on the outer periphery of the fixed pipe 512. A stand 513 is provided. One end of the support base 513 is fixed to the outer periphery of the fixed tube 512, and the other end is fixed to the inner wall surface of the chamber 10. The main shaft 510 can be rotated more stably by the fixed tube 512 and the support base 513.

  The cleaning unit 600 is disposed between the support legs 13 and 13 ′ of the chamber 10 and includes a storage tank 630 for storing cleaning water. The storage tank 630 is connected to a discharge port 640 formed on the bottom inclined bottom surface of the chamber 10, and a filter 650 for filtering foreign matter in water discharged from the inside of the chamber 10 to the storage tank 630 in the discharge port 640. Is provided.

  In addition, the cleaning water in the storage tank 630 is supplied to the upper and lower parts of the pallet 20 inside the chamber 10 through the cleaning water supply pipe 620 and then injected to the upper and lower parts of the pallet 20 at high pressure through the injection nozzle 660. ing. The washing water is supplied into the chamber 10 by the operation of a pump 610 provided in the storage tank 630.

  Here, each of the injection nozzles 660 is configured to be capable of adjusting the direction. In particular, it is preferable that the upper and lower injection nozzles 660 in the pallet traveling direction are arranged to be inclined in the forklift entry direction so that the side surface of the pallet 20 can be easily cleaned.

  As shown in FIG. 5, the air injection unit 700 includes turbofans 710 provided on the upper and lower sides of the chamber 10. Each turbo fan 710 includes an intake pipe 720 for sucking air in the chamber 10 and an exhaust pipe 730 for supplying the sucked air into the chamber 10 again. One end of these pipes communicates with the interior of the chamber 10, and the other end is connected to the turbofan 710. In the present invention, it is not necessary to provide another means for supplying and discharging air by using the circulating air in the chamber 10 during the drying operation of the pallet 20. Therefore, energy can be saved and work efficiency can be improved.

  Here, it is preferable that one end of the intake pipe 720 is disposed on the inner upper side or the lower side of the chamber 10. An evaporator 721 for removing moisture contained in the air is provided at one end of the intake pipe 720. While the hot and humid air passes through the evaporator 721, the temperature is lowered by heat exchange with the refrigerant and moisture is removed. Accordingly, dry cooling air from which moisture has been removed flows into the turbofan 710, and water generated during the heat exchange process falls into the chamber 10 and is discharged into the storage tank 630 together with the cleaning water.

  Further, a shut-off curtain 722 is provided outside the evaporator 721. The blocking curtain 722 serves to block the inflow of water scattered by the centrifugal force when the pallet 20 rotates and the cleaning water sprayed through the spray nozzle 660.

  Further, one end of the exhaust pipe 730 is located in the vicinity of the upper and lower surfaces of the pallet 20, and a heat exchanger 731 for raising the temperature of the air discharged from the exhaust pipe 730 and a high-pressure jet of the heated air. The air knife 733 is provided. With the heat exchanger 731 and the air knife 733 arranged continuously, moisture such as small water droplets remaining on the pallet 20 during dehydration can be effectively removed while the pallet 20 can be dried.

  Further, a condenser 732 is provided inside the heat exchanger 731. The air discharged from the turbo fan 710 passes through the exhaust pipe 730 and flows into the heat exchanger 731, and the air that flows in this process is heated by the condenser 732 while exchanging heat. The heated air is injected at high pressure onto the upper and lower parts of the pallet 20 through the air knife 733.

  On the other hand, the evaporator 721 and the condenser 732 used in the air injection unit 700 have the same operation principle and structure as the evaporator and the condenser used in a normal refrigerator, and thus detailed description thereof will be omitted. . At this time, the air injection unit 700 further includes a compressor 740 and an expansion valve 750. The compressor 740, the condenser 732, the expansion valve 750, and the evaporator 721 serve to compress, condense, expand, and evaporate the refrigerant that flows along the refrigerant pipe (not shown in the drawing).

  That is, since the refrigerant that has flowed out of the condenser 732 is a low-temperature and high-pressure liquid, it is supplied to the evaporator 721 through the expansion valve 750 at a low temperature and a low pressure. In the evaporator 721, the low-temperature refrigerant exchanges heat with air to take heat from the warm air, and the low-temperature air from which moisture has been removed flows into the intake pipe 720 and the turbo fan 710.

  The refrigerant that has become low-pressure gas in the evaporator 721 is transferred to the compressor 740, compressed at high temperature and high pressure, transferred to the condenser 732, and then becomes low-temperature and high-pressure in the condenser 732. In this process, heat is exchanged between the air and the refrigerant, the temperature of the air rises, and the heat heats the air inside the heat exchanger 731. The heated air is jetted at high pressure onto the pallet 20 by the air knife 733.

  As described above, in the air injection unit 700, the circulating air in the chamber 10 is used by the turbo fan 710, and the air in the chamber 10 is heated and cooled by the organic action of compression, condensation, expansion, and evaporation of the refrigerant. Therefore, the air with the minimized moisture can be used for drying the pallet 20.

  Hereinafter, the operation of the cleaning and drying apparatus for a parent-environment integrated pallet having the air circulation drying structure according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

  As shown in FIG. 6, the pallet-environment-integrated pallet cleaning and drying apparatus having an air circulation drying structure according to the present invention includes a pallet charging / transfer operation (S100), a pallet stop operation (S200), S300), pallet fixing operation (S400), washing water injection operation (S500), pallet rotation operation (S600), air injection operation (S700), and pallet discharging and transfer operation (S800) Drying is performed.

  Next, these processes will be described in more detail with reference to FIGS. FIG. 7 is a view showing the concept of pallet loading and transfer operation of the environmentally friendly pallet cleaning and drying apparatus having the air circulation drying structure according to the present invention. It is a schematic diagram which shows the concept of transfer operation | movement.

  As shown in FIG. 7, when the door of the chamber 10 is opened, the inlet 11 of the chamber 10 is opened, and the pallet 20 can enter from the outside along the arrow direction. The pallet 20 that has flowed through the inlet 11 is placed on the conveyor belt 100 and moved into the chamber 10.

  FIG. 8 is a schematic diagram showing the concept of the pallet stop operation of the environmentally friendly integrated pallet cleaning and drying apparatus having the air circulation drying structure according to the present invention.

  As shown in FIG. 8, when the pallet 20 that has entered the chamber 10 is transferred to the center of the chamber 10, the stopper 200 prevents the pallet 20 from proceeding. That is, the stopper 200 is vertically rotated while the cylinder load 210a protrudes by the operation of the stopper cylinder 210. Accordingly, the stopper 200 prevents the pallet 20 from moving forward.

  FIG. 9 is a schematic view showing the concept of the pallet lifting / lowering operation of the environmentally friendly integrated pallet cleaning and drying apparatus having the air circulation drying structure according to the present invention.

  As shown in FIG. 9, the stopped pallet 20 is raised up to a predetermined height by the pallet elevating unit 300. At this time, the cylinder load 310 a protrudes upward by the operation of the elevating cylinder 310. As a result, the mounting plate 320 provided on the cylinder load 310 a supports the lower surface of the pallet 20, and the pallet 20 rises from the conveyor belt 100.

  FIG. 10 is a schematic diagram showing the concept of the pallet fixing operation of the environmentally friendly integrated pallet cleaning and drying apparatus having the air circulation drying structure according to the present invention.

  As shown in FIG. 10, the raised pallet 20 is fixed to the pallet fixing part 400. At this time, when the upper surface of the rising pallet 20 presses the hydraulic device 440 provided on the bottom surfaces of the first and second fixed cylinders 410 and 420, hydraulic pressure is generated. As a result, the first extending rod 411 provided in the first fixed cylinder 410 is inserted into the first fixed cylinder 410, while the fixed chuck 412 provided at the end of the first extending rod 411 allows the pallet 20 to Grasping both sides facing each other in the direction perpendicular to the direction of travel.

  Further, the rotating chuck 422 provided on the second extending rod 421 of the second fixed cylinder 420 rotates from the horizontal to the vertical, and at the same time, the second extending rod 421 is inserted into the second fixed cylinder 420. . On the other hand, both side surfaces facing the traveling direction of the pallet 20 are gripped by the rotating chuck 422 provided at the end of the second extending rod 421.

  That is, in the pallet fixing part 400, the four outer peripheral surfaces of the pallet 20 are pressed and fixed by the fixing chuck 412 and the rotating chuck 422.

  On the other hand, the 1st and 2nd extending | stretching rods 411 and 421 are maintaining the state fully protruded from the 1st and 2nd fixed cylinder 410,420 at the normal time. Accordingly, it is possible to smoothly hold and fix the pallet by projecting and inserting the first and second stretching rods 411 and 421 according to the size of the pallet 20.

  The rotating chuck 422 is configured to be positioned horizontally with respect to the second fixed cylinder 420 and the second extending rod 421 during normal operation and to rotate vertically during operation. Accordingly, the pallet 20 only needs to be raised from the conveyor belt 100 to a predetermined height, that is, to a minimum height separated from the conveyor belt 100. Thereby, the cleaning and drying effects of the pallet 20 are improved, the lifting cylinder 310 of the pallet lifting / lowering unit 300 can be reduced, and the standard of the chamber 10 can be minimized.

  FIG. 11 is a schematic diagram showing the concept of washing water jetting operation of the environmentally friendly integrated pallet washing and drying apparatus having an air circulation drying structure according to the present invention.

  As shown in FIG. 11, cleaning water is sprayed on the upper and lower parts of the pallet 20 with the pallet 20 fixed. The cleaning water is supplied into the chamber 10 from the storage tank 630 through the cleaning water supply pipe 620 by the operation of the pump 610. The supplied cleaning water cleans foreign matter and dirt attached to the outer surface of the pallet 20 while being jetted from the jet nozzle 660 at a high pressure. The upper and lower injection nozzles 660 in the pallet traveling direction are arranged so as to face the forklift entering direction, and can clean the side surface of the pallet 20.

  On the other hand, the waste cleaning water used when cleaning the pallet 20 is discharged to the storage tank 630 through the discharge port 640 formed on the bottom surface of the chamber 10. Foreign matter contained in the washing water discharged to the storage tank 630 is filtered by the filter 650.

  FIG. 12 is a schematic diagram showing the concept of the palette rotation operation of the environmentally friendly integrated pallet cleaning and drying apparatus having the air circulation drying structure according to the present invention.

  As shown in FIG. 12, the pallet 20 is rotated at the same time as the cleaning water is jetted. When the drive motor 520 provided outside the chamber 10 is operated, the main shaft 510 connected to the drive motor 520 through the belt 530 rotates. As a result, the pallet 20 fixed to the pallet fixing part 400 provided in the lower stage of the main shaft 510 also rotates at the same time.

  On the other hand, since the drive motor 520 can rotate in the forward and reverse directions, the rotation direction of the pallet 20 can be selected and used as necessary.

  FIG. 13 is a schematic diagram showing the concept of the air injection operation of the environmentally friendly integrated pallet cleaning and drying apparatus having the air circulation drying structure according to the present invention.

  As shown in FIG. 13, the air injection unit 700 operates while the pallet 20 rotates. The air injection unit 700 sucks the circulating air in the chamber 10 and injects it at high pressure on the upper and lower parts of the pallet 20.

  That is, the air in the chamber 10 flows into the turbo fan 710 through the intake pipe 720. At this time, the inflowing air contains a large amount of moisture, and the hot and humid air is cooled by heat exchange with the low-temperature and low-pressure refrigerant while passing through the evaporator 721. The cooling air flows into the turbo fan 710 with moisture removed.

  That is, in the evaporator 721, heat is taken from the air sucked into the intake pipe 720, and at the same time, moisture is removed and then flows into the turbo fan 710.

  Further, the air flowing into the turbo fan 710 is again injected into the pallet 20 through the exhaust pipe 730. The air discharged from the exhaust pipe 730 passes through a heat exchanger 731 disposed between the exhaust pipe 730 and the air knife 733, and is heat-exchanged with the refrigerant to increase in temperature. Therefore, high-temperature and high-pressure air can be injected to the pallet 20 through the air knife 733.

  At this time, the low-pressure refrigerant gas heat-exchanged with air in the evaporator 721 is transferred to the compressor 740 and compressed, and the high-temperature and high-pressure refrigerant is transferred to the condenser 732. In the condenser 732, the high-temperature and high-pressure refrigerant is in a low-temperature and high-pressure state. In this process, heat is exchanged between the refrigerant and the air, and the air discharged from the exhaust pipe 730 is heated while passing through the heat exchanger 731 due to the heat. The heated air is injected at high pressure through the air knife 733.

  In this way, the high-temperature air injected at a high pressure permeates the cleaning water injected in the cleaning operation to every minute part of the pallet 20 and improves the cleaning quality of the pallet 20. That is, it is possible to remove foreign matter including cleaning water and fine water droplets inside the inlet into which the fork of the forklift that is not removed during dehydration by rotation of the pallet 20 is inserted.

  Further, the operation of the air injection unit 700 as described above can be quickly dried up to the inside of the pallet 20 with high-temperature and high-pressure air by continuing for a certain period of time after the cleaning water injection is completed. Since the water contained in the air can be removed by the evaporator 721 during the operation of air injection, there is also an effect of dehumidifying the inside of the chamber 10.

  FIG. 14 is a schematic diagram showing the concept of pallet discharge and transfer operations of the environmentally friendly integrated pallet cleaning and drying apparatus having an air circulation drying structure according to the present invention.

  As shown in FIG. 14, when the cleaning and drying are completed, the operation of the air injection unit 700 is stopped and the pallet 20 is discharged from the chamber 10. When the pallet 20 is discharged, the pallet elevating unit 300 is lowered in the reverse order of the ascending process. Accordingly, the hydraulic device 440 of the pallet fixing part 400 that presses the pallet 20 is released, and the gripping state of the pallet 20 is released by the protrusion of the first and second extending rods 411 and 421 and the return of the rotating chuck 422. The At the same time, the pallet 20 falls onto the conveyor belt 100. Next, the pallet 20 is discharged to the outside through the outlet 12 along the conveyor belt 100.

  As described above, the environment-friendly integrated pallet cleaning and drying apparatus having the air circulation drying structure according to the present invention further improves the cleaning workability by the pallet fixing portion that can handle various sizes of pallets, and is structurally By reducing the size of the chamber, the standard of the chamber can be minimized, and the thermal efficiency can be further improved by effectively circulating the air in the chamber. Therefore, it can be said that the industrial applicability of the present invention is extremely high.

  On the other hand, while the invention has been described in terms of several preferred embodiments within the present specification, many variations and modifications will occur to those skilled in the art without departing from the scope and spirit of the invention as disclosed in the appended claims. It should be understood that can be made.

10 Chamber 11 Inlet 12 Outlet 20 Pallet 100 Conveyor belt 200 Stopper 210 Stopper cylinder 210a Cylinder load 300 Elevating part 310 Elevating cylinder 310a Cylinder load 320 Mounting plate 400 Pallet fixing part 410, 420 First and second fixed cylinders 411, 421 First First and second stretching rods 412 Fixed chuck 422 Rotating chuck 440 Hydraulic device 450 Connection base 500 Rotating operation part 510 Main shaft 512 Fixed pipe 513 Support base 520 Drive motor 530 Belt 600 Cleaning part 610 Pump 620 Cleaning water supply pipe 630 Storage tank 640 Discharge port 650 Filter 660 Injection nozzle 700 Drying unit 710 Turbo fan 720 Intake pipe 721 Evaporator 722 Barrier film 730 Exhaust pipe 7 31 Heat exchanger 732 Condenser 733 Air knife 740 Compressor 750 Expansion valve

Claims (4)

A conveyor belt 100 for transferring the pallet 20 into the chamber 10 in which the inlet 11 and outlet 12 are formed;
A stopper 200 actuated by a stopper cylinder 210 for stopping the pallet 20 entering the interior of the chamber 10;
A pallet elevating unit 300 including a mounting plate 320 for raising the stopped pallet 20 and an elevating cylinder 310;
In order to grip and fix the pallet 20, a first fixed cylinder 410 provided with a first extending rod 411 having fixed chucks 412 that can protrude by hydraulic pressure on both sides in a direction perpendicular to the traveling direction of the pallet 20, and hydraulically A second fixed cylinder 420 provided with a second extending rod 421 protruding forward and backward along the traveling direction of the pallet 20, and the first and second fixed cylinders 410 and 420 are connected by a connection base 450. A pallet fixing part 400;
A rotation operation unit 500 including a main shaft 510 that rotates the pallet 20, a drive motor 520 that drives the main shaft 510, and a belt 530 that transmits the rotational force of the drive motor 520 to the main shaft 510;
A storage tank 630 provided at a lower portion outside the chamber 10, a discharge port 640 connecting the inclined bottom surface of the chamber 10 and the storage tank 630, and a filter 650 provided in the discharge port 640 are provided. A cleaning unit 600 that sprays cleaning water onto the pallet 20 through the supply pipe 620 and the spray nozzle 660;
An air injection unit 700 comprising an air knife 733 for injecting air into the pallet 20 to dry the cleaned pallet;
In an integrated pallet washing and drying apparatus including
The pallet fixing part 400 includes a rotating chuck 422 provided at an end of a second extending rod 421 formed in the second fixing cylinder 420 and rotating vertically with respect to the extending rod by hydraulic pressure.
When the second extending rod 421 is inserted into the second fixed cylinder 420, the rotating chuck 422 rotates to grip the front and rear surfaces of the pallet 20,
The air injection unit 700 includes a turbo fan 710 provided at an upper part and a lower part of the outside of the chamber 10, one end communicating with the inside of the chamber 10, and the other end connected to the turbo fan 710. An intake pipe 720 and an exhaust pipe 730 for circulating air;
The air injection unit 700 is provided at the end of the intake pipe 720 to remove the moisture contained in the air, and the condenser 721 is provided at the end of the exhaust pipe 730 to increase the temperature of the exhaust. A heat exchanger 731 provided with a machine 732, and the air knife 733 is provided in the heat exchanger 731;
The air injection unit 700 further includes a compressor 740 and an expansion valve 750 connected to the condenser 732 and the evaporator 721, so that the refrigerant to be compressed, condensed, expanded, and evaporated is the condenser 732 and the evaporator 721. Heating and cooling the circulating air inside the chamber 10 while passing through
An environment-friendly integrated pallet cleaning and drying apparatus having an air circulation drying structure. The pallet fixing part 400 further includes a hydraulic device 440 that is provided on the bottom surfaces of the first and second fixing cylinders 410 and 420 and supplies pressure oil to the first and second extending rods 411 and 421 and the rotating chuck 422. ,
When the upper surface of the pallet 20 raised by the pallet elevating unit 300 presses the hydraulic device 440, the first and second stretching rods 411 and 421 and the rotating chuck 422 are operated by the supplied hydraulic pressure.
The enviroment-integrated pallet washing and drying apparatus having an air circulation drying structure according to claim 1. A main shaft 510 provided inside the chamber 10 has a fixed pipe 512 provided around it via a bearing, one end fixed to the outer periphery of the fixed pipe 512 and the other end fixed to the inner wall surface of the chamber 10. A number of support bases 513,
The main shaft 510 is stably rotated by the fixed tube 512 and the support base 513.
The enviroment-integrated pallet washing and drying apparatus having an air circulation drying structure according to claim 1. The air injection unit 700 further includes a washing water blocking curtain 722 provided outside the evaporator 721 to prevent moisture scattered by centrifugal force from entering the condenser 721 when the pallet 20 is rotationally dehydrated. ,
The enviroment-integrated pallet washing and drying apparatus having an air circulation drying structure according to claim 1.

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