JP3837422B2 - Residue drying equipment - Google Patents

Description

  The present invention relates to a residue drying facility.

  In recent years, the “Law Concerning Promotion of Recycling and Recycling of Food Recycling Resources” has been enforced, and it has been obtained as a secondary product in the process of food production, processing, cooking, etc. Of the food waste that cannot be used, useful waste (food recycling resources) can be dehydrated, dried, pulverized, etc., and reused as raw materials for fertilizer, feed, and other products to reduce food waste. It became the responsibility of the operator.

  In addition, a processing method has been proposed in which soy sauce cake, which is a food recycling resource, is sequentially wetted and dried to remove the off-flavor components from the soy sauce cake so that the soy sauce cake can be recycled as raw material for compound feed and fertilizer. (For example, refer to Patent Document 1).

The residue after squeezing fruit juice from apples and other fruits is suitable for livestock feed because it contains a lot of sugar. Feeding fruit residues to livestock is rarely done due to reasons such as being able to obtain residues only during the season.
JP 2003-19471 A

  In order to feed vegetal residues rich in sugar to livestock throughout the year, it is necessary to provide sufficient treatment such as dehydration and drying to prevent spoilage and reduce weight to facilitate storage and transportation. There is.

  However, when the fruit residue is dried with hot air using the multi-stage disk dryer exemplified in Patent Document 1, the relative proportion of sugar increases with the evaporation of moisture, and the component of the dryer is Residue adheres and cannot be removed.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to enable a residue containing sugar to be efficiently dried.

  In order to achieve the above object, the invention described in claim 1 is characterized in that the residue placed on the processing plate is leveled and peeled off, and the residue peeled off by the scraper is processed so that the front and back are reversed. A cutter that sequentially cuts out toward the plate and radiation drying means for heating the residue placed on the processing plate are provided.

  According to a second aspect of the present invention, a cutter is attached to a rotatable drum.

  In the first aspect of the present invention, the residue placed on the treatment plate is leveled with a scraper, heated by radiant drying means, and then the residue on the treatment plate is peeled off with a scraper, and the treatment plate is cut with a cutter. Then, the residue is turned upside down and turned upside down, and heated by radiation drying means.

  In the invention described in claim 2, the drum is rotated to continuously cut off the residue.

  According to the residue drying equipment of the present invention, the following various excellent effects can be obtained.

  (1) In the first aspect of the invention, after heating the flattened residue by the radiant drying means, the front and back of the residue are reversed and heated again by the radiant drying means. The residue can be efficiently dried.

  (2) In the invention described in claim 2, when the drum is rotated, the residue is continuously reversed, so that the residue can be efficiently dried.

  (3) In any of the first and second aspects of the invention, by drying the residue, it is possible to prevent spoilage and reduce the weight, and it becomes easy to store and transport the residue having a high sugar content. As a result, fruit residues obtained in the fruit juice production process can be reused as a food recycling resource in a wide range of fields such as health food materials and livestock feed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 6 show an example of an embodiment of a residue drying facility according to the present invention. This residue drying facility is divided into a first-stage drying mechanism A and a second-stage drying mechanism B.

  The pre-drying mechanism A includes a processing plate 11 on which the residue Z is placed, a frame 12 so as to face the processing plate 11 across the width direction, and the residue Z placed on the processing plate 11 in a flat and leathery manner. A scraper 13 to be peeled off in the form of a cutter, a cutter 14 for sequentially cutting the residue Z peeled off by the scraper 13 toward the processing plate 11, a drum 15 incorporating the cutter 14, and the processing plate 11. And an infrared heater 16 as a radiant drying means for heating the residue Z, and a reversing unit 22 is constituted by the frame 12, the scraper 13, the cutter 14 and the drum 15 (see FIGS. 1 to 3 and FIG. 6). .

  The processing plate 11 may be either a belt conveyor type capable of rotating in both forward and reverse directions or a table type capable of reciprocating in the longitudinal direction.

  The scraper 13 has an elongated shape whose long side is approximately the same as the entire width of the processing plate 11, and is disposed between the frames 12 so as to be positioned above the processing plate 11.

  One long side of the scraper 13 is pivotally supported on the frame 12 by a shaft 18 extending horizontally in the width direction of the processing plate 11, and the other long side of the scraper 13 is on the upper surface of the processing plate 11 (surface on which the residue Z is placed). It can come into contact.

  Furthermore, in order to urge the other long side of the scraper 13 toward the processing plate 11, the lower end portion of the arm 19 is fixed to the end portion of the shaft 18, and the upper end portion of the arm 19 and a predetermined portion of the frame 12 are fixed. A coil spring 20 acting in the pulling direction is provided between them.

  In other words, when the processing plate 11 on which the residue Z is placed is moved in the direction of the arrow C that travels toward the scraper 13 through the shaft 18, the scraper 13 thins and flattens the residue Z on the processing plate 11. Is moved in the direction of arrow D that advances toward the scraper 13, the scraper 13 peels off the residue Z from the treatment plate 11 in a skin shape.

  The infrared heater 16 is a combustion type heater that uses a gaseous fuel F such as LPG or LNG, and is disposed above the processing plate 11 so as to impart radiant heat to the residue Z leveled by the scraper 13.

  The drum 15 is disposed between the frames 12 so that the gap between the flanges at both ends is about the same as the entire width of the processing plate 11 and is located upstream of the scraper 13 in the residue Z leveling direction (left side in FIG. 1). is there.

  A drum portion of the drum 15 extends in the width direction of the processing plate 11 and is pivotally supported by the frame 12 by a shaft 21 to which rotation is transmitted from a motor (not shown). However, it is stretched parallel to the shaft 21.

  That is, the cutter 15 approaches the scraper 13 from above and rotates the drum 15 around the arrow E (clockwise in FIG. 1) that proceeds to the upstream side in the residue Z leveling direction of the scraper 13, and is thin and flat as described above. When the processing plate 11 on which the uniform residue Z is placed is moved in the direction of arrow D, the cutter 14 is peeled off by the scraper 13 in accordance with the rotation of the drum 15, and the residue Z is directed toward the processing plate 11. Then cut it into small pieces.

  Since the cut-off portion Z into which the cutter 14 bites is shaken off toward the upstream side in the residue Z leveling direction of the scraper 13, the small residue Z falls to the processing plate 11 with the front and back reversed.

  In order to reliably reverse the front and back of the residue Z, it is desirable that the cutter 14 be linear, and adhesion of the residue Z to the cutter 14 can be suppressed.

  After that, if the processing plate 11 is moved in the direction of arrow C as described above, the residue Z whose front and back are reversed is leveled thinly and flat by the scraper 13, and then heated again by the infrared heater 16, the sugar is burnt. The residue Z can be efficiently dried without causing it to occur.

  In the preceding stage drying mechanism A, the reversing unit 22 is fixed in position and the processing plate 11 on which the residue Z is placed is moved. On the contrary, the processing plate 11 is fixed in position and the reversing unit 22 is moved. A similar effect can be obtained by adopting a configuration for moving the lens.

  The post-stage drying mechanism B includes cylinders 31 and 32 that are arranged in a column and whose inner diameter expands from the lower end toward the upper end, the processing tower 33 that is in close contact with the entire periphery of the upper end of the cylinders 31 and 32, and extends vertically. A shaft 34 passing through the inside of the cylindrical bodies 31, 32, a cap-shaped receiving plates 35, 36 mounted on the shaft 34 and facing the lower ends of the cylindrical bodies 31, 32 to form a gap, and the shaft 34 And a fan 38 and a mixer 39 as ventilation drying means for obtaining thermal energy from the combustion gas G generated by the infrared heater 16 of the pre-stage drying mechanism A and feeding hot air H to the lower part of the processing tower 33. Provided (see FIGS. 4 to 6).

  The mixer 39 mixes the combustion gas G with air to produce hot air H having a temperature suitable for the post-stage drying mechanism B.

  The processing tower 33 includes a recovery box 40 in which the residue Z is accumulated, an outer shell 41 in which the cylindrical body 31 is installed, an outer shell 42 in which the cylindrical body 32 is installed, an outer shell 43 that receives the residue Z, and an equipment chamber 44 in which the motor 37 is installed. The outer shell 43 is provided with a feeder 45 for introducing the residue Z, which has been subjected to the drying process in the pre-stage drying mechanism A, into the processing tower 33.

  The feeder 45 may be a screw type capable of continuously charging the residue Z in addition to the pusher type as shown in FIG.

  Further, a cyclone separator 46 for collecting a fine solid content is incorporated in the upper end portion of the equipment chamber 44.

  A screw conveyor (not shown) having a sealing function is attached to the collection box 40 so that the residue Z can be continuously sent to the outside.

  The shaft 34 is pivotally supported by brackets 47, 48, and 49 at the lower end portion of the outer shell 41, the upper end portion of the cylindrical body 31, and the upper end portion of the cylindrical body 32.

  The receiving plates 35 and 36 are provided with a large number of ventilation holes 50 having a shape that allows passage of the hot air H and prevents passage of the residue Z.

  Guide plates 51 and 52 for cutting out the residue Z accumulated in the cylindrical bodies 31 and 32 by rotation of the receiving plates 35 and 36 are attached to the lower ends of the cylindrical bodies 31 and 32.

  The guide plates 51 and 52 can adjust the amount of insertion into the cylinders 31 and 32, and the amount of residue Z cut out increases as the amount of insertion of the guide plates 51 and 52 becomes deeper.

  Further, the lower end opening cross-sectional area of the lower cylinder 31 is upward so that the flow velocity of the hot air H inside the upper cylinder 32 is higher than the flow velocity of the hot air H inside the lower cylinder 31. It is set larger than the lower end opening cross-sectional area of a certain cylinder 32.

  Further, blades 53 and 54 are attached to the shaft 34 so as to be positioned inside the cylindrical bodies 31 and 32.

  When the residue Z is dried by the latter-stage drying mechanism B, the residue Z is introduced into the processing tower 33 from the feeder 45 and stored in the cylinder 32, and hot air H is fed to the lower portion of the processing tower 33, and the motor 37 is actuated to rotate the shaft 34.

  As a result, the flow of the hot air H directed upward in the processing tower 33 passes through the residue Z accumulated in the cylindrical body 32, and the residue Z dried by the hot air H is cut out by the rotation of the receiving plate 36. The flow of hot air H that falls into the body 31 and upwards into the processing tower 33 passes through the residue Z accumulated in the cylindrical body 31, and the residue Z further dried with the hot air H is the receiving plate 35. And is dropped into the collection box 40.

  Since the flow velocity of the hot air H decreases as the inner diameter increases as it approaches the upper ends of the cylinders 31 and 32, the residue Z accumulated in the cylinders 31 and 32 is blown up from the hot air H, but the upper layer portion of the residue Z It plays the role which suppresses scattering of a lower layer part, and it will be in the state which the residue Z floats slightly in the intermediate part.

  When the residue Z adheres to the inner surfaces of the cylindrical bodies 31 and 32 in a lump shape, the residue Z is cut by the blades 53 and 54 that rotate integrally with the shaft 34, and the circulation of the hot air H is ensured.

  The fine solids contained in the dried residue Z are collected by the cyclone separator 46. The fine solids are also collected together with the residue Z that has fallen into the collection box 40, as well as health food materials and livestock. It can be recycled for feed.

  Thus, in the latter stage drying mechanism B, the residue Z put in the cylinders 31 and 32 is dried by being exposed to the hot air H, so that the residue Z adheres to the cylinders 31 and 32 and the receiving plates 35 and 36 due to sugar. Can be prevented.

  Further, the cylinders 31 and 32 in which the residue Z is accumulated are arranged in a column, and the residue Z that has been dehydrated by the hot air H is sequentially transferred from the upper cylinder 32 to the lower cylinder 31 to sequentially reduce moisture. Therefore, the residue Z can be efficiently dried with a limited equipment installation area.

  Further, a fan 55 and a mixer 56 as ventilation drying means for supplying hot air H for removing a water film to the residue Z placed on the processing plate 11 of the upstream drying mechanism A, an intake path of the fan 38 of the downstream drying mechanism B If the structure connected to is adopted, the thermal energy of the combustion gas G can be effectively utilized to dry the residue Z efficiently.

  The mixer 56 mixes air with the hot air H sent from the mixer 39 described above, and lowers the temperature of the hot air H to a temperature suitable for water film removal.

  In addition, the residue drying equipment of the present invention is not limited to the above-described embodiment, but the number of cylinders for storing the residue can be changed, the residue can be dried only by the subsequent drying mechanism, and others. Of course, modifications can be made without departing from the scope of the present invention.

  The residue drying equipment of the present invention can be applied to various food circulation resources.

It is a conceptual diagram which shows the pre-stage drying mechanism in an example of embodiment of this invention. It is an II-II arrow line view of FIG. It is a conceptual diagram which shows the support structure of the scraper in FIG. It is a conceptual diagram which shows the back | latter stage drying mechanism in an example of embodiment of this invention. It is a VV arrow line view of FIG. It is a conceptual diagram which shows the relationship between the combustion drying means of a front | former stage drying mechanism, and the aeration drying means of a back | latter stage drying mechanism.

Explanation of symbols

11 Treatment plate 13 Scraper 14 Cutter 15 Drum 16 Infrared heater (radiant heating means)
Z residue

Claims (2)

  A scraper for leveling and peeling off the residue placed on the processing plate, a cutter for sequentially cutting off the residue peeled off by the scraper toward the processing plate so that the front and back are reversed, and a residue placed on the processing plate A residue drying facility comprising a radiation drying means for heating.   The residue drying equipment according to claim 1, wherein a cutter is attached to a rotatable drum.

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