JP2008284463A - Recycling plant for discarded food - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simplified and low-cost recycling plant for discarded food capable of producing high-quality feed suitable for a variety of applications from discarded food past consume-by date or best-before date discarded by a convenience store, a super market or the like. <P>SOLUTION: The recycling plant for discarded food capable of producing many kinds of feed from discarded food is comprised of a production line for producing dried low-fat feed F1 by drying, using a drier, a portion of low-fat discarded food c isolated from food waste a, b, of the whole discarded food, from which low-fat discarded food can be isolated, a production line for producing liquid fermented feed F3 by subjecting the remaining low-fat discarded food c to lactic fermentation, a production line for producing dried high-fat feed F2 by drying, using a drier, a portion of the high-fat discarded food e isolated from specific food waste, of the whole discarded food, from which high-fat discarded food can be isolated, a production line for producing compost from a portion of discarded food h, of the whole discarded food, from which neither low-fat discarded food c nor high-fat discarded food e can be isolated, and a production line for producing biogas by subjecting the remaining discarded food h to methane fermentation. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a waste food recycling plant capable of simultaneously producing a plurality of types of high quality feed by reusing waste food to be discarded.

  2. Description of the Related Art Conventionally, in convenience store, supermarket or department store food departments, cooked foods such as lunch boxes and side dishes are placed in synthetic resin lunch boxes and trays and covered with synthetic resin lids and wraps. For example, in a lunch box with a tray, a cup-shaped food, an aluminum pan-type instant food, or a beverage, a beverage in a paper pack can be used. Cooking breads and rice balls are sold in plastic resin bags.

The food packaged in this way has a expiration date or expiration date determined from the storage temperature depending on the season and environmental changes at the time of sale. Since these packaged foods cannot be sold as commodities after the expiration date, they are removed from the store and discarded.
In addition, from restaurants, schools, hospitals, and the like, a large amount of so-called consumer waste food remains from foods prepared for school lunch. For this reason, there is an increasing need to effectively use these discarded foods.

  For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2003-88838) discloses a technique for effectively using waste foods. Deoiling is performed by steaming and drying food wastes discharged from the food service industry, food factories, and the like. A system is disclosed that produces dry feed, methane fermentation of food waste to obtain high calorie gas, or lactic fermentation of food waste to produce fermented mixed feed.

JP 2003-88838 A

In Patent Document 1, the food waste is heated to 90 ° C. or higher by steam in a steam cooker to float the oil in the food waste, and then the hot water of 90 ° C. or higher is sprayed on the food waste and the oil and salt etc. A steaming process is performed to remove the solids, and then the separated solid content is dried with a heating steam dryer. By passing through this process, it is possible to produce a deoiled and dried feed with a low oil content.
However, the processing method of Patent Document 1 has a problem that the processing steps are complicated and the equipment cost is high.

  On the other hand, since the consumer waste food contains various miscellaneous food residues, it is difficult to separate them. Therefore, it is difficult to produce a good quality feed by the conventional processing method. there were.

  In addition, the packaged food discharged from a convenience store, a supermarket, or the like needs to separate the packaging material from the waste food, but such a sorting operation is not easy. In addition, according to the recently enacted Container and Packaging Recycling Law, it has become necessary to separate and collect packaging materials such as lunch boxes and trays made of synthetic resin and waste food.

  In the case of livestock feed, the value of pig feed is generally reduced when fat content is high. On the other hand, bento side dishes and side dishes discarded from convenience stores, supermarkets, etc. have high fat content and are not suitable as feed for pigs. On the other hand, it is thought that the amount of fat in chicken feed is not as restricted as that for pigs. Commonly distributed pig feed is mainly mixed feed, and the main component of this mixed feed is grains such as corn. Recently, however, the international market for corn has soared due to changes in energy demand.

  On the other hand, rice balls, sweet buns, bento rice, etc. in waste foods at convenience stores, supermarkets, etc. are often high-quality, low-fat cereals, so if these waste foods can be reused as pig feed at low cost, good quality Can be produced, and the production cost of the pig feed can be reduced.

  In view of the problems of the prior art, the present invention separates foods that can be separated from low-fat waste foods or high-fat waste foods in order to effectively use foods that are discarded in large quantities. Makes it possible to produce good-quality feed suitable for each application, and, for waste foods that are difficult to separate, use them as compost or biogas-producing raw materials, and effectively use the waste food An object of the present invention is to simplify the treatment by separately treating the sorted low-fat waste food or high-fat waste food, thereby providing a low-cost feed.

In order to achieve such an object, the food residue recycling plant of the present invention comprises:
In a waste food recycling plant that produces multiple types of feed from discarded food,
Among the waste foods, a part of the low-fat waste foods separated from the waste foods that can be separated from the low-fat waste foods is dried with a dryer to produce a low-fat dry feed,
A production line for producing a liquid fermented feed by subjecting the rest of the low-fat waste food to lactic acid fermentation;
Of the waste food, a production line for producing a high fat dry feed by drying a part of the high fat waste food separated from the waste food capable of separating the high fat waste food with a dryer;
A line for composting a part of the waste food that is difficult to sort out the low fat waste food or the high fat waste food among the waste food,
A line for producing biogas by fermenting the remainder of the waste food with methane.

  In the present invention, the low-fat waste food or the high-fat waste food that can be separated is mainly a packaged food that is discarded from a convenience store, a supermarket, a department store, a mass retailer, or a food factory. is there. On the other hand, waste foods that are difficult to separate from low-fat waste foods or high-fat waste foods are mainly consumer wastes that are the remainder of food prepared and served in hospitals, schools, restaurants, etc. It is food.

However, some foods discarded from convenience stores are not packaged. For example, there are combs such as Chinese buns, oden, yakitori, etc., and it is difficult to separate low-fat waste foods or high-fat waste foods from these waste foods. As a composting process or as a raw material for a biobath. On the other hand, among consumer waste foods, separable vegetables can be used as raw materials for liquid fermented feed, and therefore can be sent to a liquid fermented feed production line.
Moreover, milk beverage waste products such as pudding, yogurt, etc. in milk in a paper pack or in a synthetic resin container can be separated and used for lactic acid fermentation, so it can be sent to a liquid fermented feed production line .

The operation of separating the collected waste food is mainly performed manually by an operator, or may be performed using a conventionally known semi-automated machine.
The low-fat waste food separated from the separable waste food is partially dried to produce a low-fat dry feed, and the rest is fermented with lactic acid bacteria to produce a liquid fermented feed. As a result, a low-fat dry feed suitable for pigs can be produced.

  Expired or expired foods discarded from convenience stores, supermarkets, etc. contain many high-quality, low-fat cereals such as rice balls, sweet buns, and bento rice. By separating the waste food, high-quality low-fat dry feed can be produced in large quantities.

  After separating low-fat waste foods from separable waste foods, things that contain a lot of fat, such as sandwiches and side dishes in lunch boxes, inevitably remain. If the nutrients are also constant to some extent, they can be mixed with the mixed feed. As a feed for chickens, it can be used even if it contains a lot of fat. Therefore, the high-fat waste food remaining after separation of the low-fat waste food is dried to produce a high-fat dry feed, which can be used mainly as chicken feed. In addition, although it receives restrictions on the blending ratio with other feeds, it can also be used for pigs. High-fat dry feed is also used as feed (food) for animals other than livestock such as pets and ornamental animals such as pet food and fish food.

  In addition, waste foods that cannot be separated into low-fat waste foods or high-fat dry feeds, mainly consumer waste foods, are either composted to produce compost or methane-fermented to produce biogas. Select the production line. Composting is a fermenting action that decomposes waste foods by aerobic bacteria, and methane fermentation is a fermenting action that decomposes waste foods by anaerobic bacteria. Therefore, the target waste food is classified into a waste food suitable for composting and a waste food suitable for methane fermentation and distributed to each production line.

  Thus, according to the present invention, among the waste foods accumulated from various places, from the waste foods that can be separated into low-fat waste foods or high-fat waste foods, high-quality low-fat dry food suitable as pig feed A high-quality high-fat dry feed suitable as feed, liquid fermented feed, chicken feed, pet food, fish feed, or the like can be produced simultaneously. In addition, compost and biogas as an energy source can be generated from waste foods that are difficult to separate. In addition, after separating waste food into low-fat waste food, high-fat waste food, and other waste foods that cannot be separated into these, each waste food is recycled, simplifying the production line This makes it possible to produce a low-cost feed.

  In addition, among discarded foods to be discarded, foods wrapped in tray lunch boxes, cup-shaped foods, aluminum pan-type instant foods, or synthetic resin films are mixed. In this invention, it is good to include the process which separates the waste food packaged with these flexible packaging materials from the waste food product, breaks the packaging material, and takes out the waste food packaged with the packaging material. . By including such treatment, even when the waste food is packaged in a flexible packaging material, the packaging material can be reliably separated from the waste food, and the packaging material is mixed into the manufactured feed. Can be prevented.

  In the plant of the present invention, the low-fat dry feed production line has a dry space that can be sealed inside, and includes a plurality of hollow tubes that are arranged in parallel in the dry space at intervals in the lateral direction. The rotating body is provided, a heating medium (for example, heated steam) is supplied to the hollow tube, and the low-fat waste food put in the drying space is stirred and heated and dried by the rotating body. It is advisable to include a drying device.

  By using the drying apparatus having such a configuration, it is possible to stir and mix the low-fat waste food while passing between the hollow tubes. Therefore, the heating efficiency is good, and the low-fat mainly for carbohydrates such as cooked rice is used. Since a strong pressure is not applied to the fat-based waste food, it is possible to perform the drying process while relatively retaining the original low-fat-type waste food. Therefore, the low-fat dry feed does not become powdery and can maintain a uniform particle shape that is easy to eat as feed.

  In the plant of the present invention, the high-fat dry feed production line has a dry space that can be sealed inside, and a rotational axis that is disposed laterally in the dry space and an axial direction of the rotational axis A plurality of hollow disks arranged in parallel at intervals, a heating medium (for example, heated steam) is supplied to the hollow disks, and the low-fat waste food put into the dry space is removed from the hollow disks It is preferable to include a drying device configured to heat and dry.

If the drying apparatus having such a configuration is used, a heating medium is passed through the hollow disk to heat the high-fat waste food. Therefore, a wide contact area between the heating surface of the hollow disk and the high-fat waste food. Therefore, the heating effect can be enhanced. Therefore, good drying performance can be obtained even for high fat waste foods.
Also, by adding a drying aid (dried material such as dusted powder) to the high fat waste food, it is possible to dry a wide variety of high fat waste food.

  Furthermore, in the plant of the present invention, the liquid fermented feed production line stores low-fat waste food and supplies milk drink waste food, vegetable waste and water to reduce the water content of the low-fat waste food. Water amount adjustment tank to be adjusted, apparatus for heat sterilizing the low-fat waste food whose water has been adjusted, equipment for culturing lactic acid bacteria using the milk beverage-based waste food, heat-sterilized low-fat waste food And a fermentation tank that accepts lactic acid bacteria cultured in the lactic acid culture facility and lactic acid ferments the low-fat waste food.

  With this configuration, a high-quality liquid fermented feed can be produced from the low-fat waste food. In particular, a liquid fermented feed can be produced at low cost by using a milk beverage waste food as a milk beverage used for adjusting the water content of a low fat waste food and culturing lactic acid bacteria. In addition, by adding vegetable waste that is 95% water, it is possible to supply water and replenish the fiber necessary for feed.

  According to the present invention, among waste foods accumulated from various places, from low-fat waste foods or high-fat waste foods that can be separated into high-fat waste foods, high-quality low-fat dry feed and liquid fermentation suitable as pig feed A high-quality, high-fat dry feed suitable mainly as a feed for chickens and feeds for chickens can be produced simultaneously. Furthermore, the biogas which becomes compost and an energy source can be produced | generated from the waste food with the said difficult separation. Accordingly, it is possible to effectively use foods discarded in large quantities.

  In addition, after separating waste food into low-fat waste food, high-fat waste food, and other waste foods that cannot be separated into these, each waste food is recycled, simplifying the production line This makes it possible to produce a low-cost feed.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this embodiment are not intended to limit the scope of the present invention to that unless otherwise specified.
(Embodiment)

  Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram of a processing line according to this embodiment. In FIG. 1, the waste food collection site 1 for recycling waste food is mainly expired from convenience stores, supermarkets, department store food departments, mass retailers, food factories, convenience vendors, etc. Alternatively, the waste food a discarded after the expiration date and the consumer waste food b discarded mainly as the rest of the food cooked for lunch at restaurants, schools, hospitals, and the like are accumulated.

  The waste food a mainly includes the above-described packaged food, but also includes unpackaged food, for example, waste food in which combs such as Chinese bun, oden, and yakitori are mixed. On the other hand, the consumer waste food b is mainly waste food mixed in various ways, but also includes foods that can be separated, such as vegetable waste food.

  The collected waste foods a and b are pretreated at the pretreatment site 2 by a known method that is manually performed by a worker or semi-automated and conventionally known means. It is classified into the other waste food h in which the system waste food e, the vegetable waste food f, the beverage waste food g, and the other various miscellaneous waste foods are mixed.

  The low-fat waste food c mainly contains carbohydrates such as rice, noodles and bread. The low-fat waste food c c breaks the soft film bag mixed in the low-fat waste food c with the low-fat breaker 3 and takes out the waste food in the bag. Thereafter, a part of the low fat waste food c is sent to the low fat dryer 4 and dried by the low fat dryer 4 to produce a low fat dry feed. The remainder of the low fat waste food c is sent to the water content adjustment tank 5 in order to produce a liquid fermented feed.

  The high-fat waste food e is mainly high-fat cooked food such as bento side dishes and side dishes. The high-fat waste food e passes through the high-fat breaker 7 and is then sent to the high-fat dryer 8 for drying treatment to become a high-fat dry feed.

  The packaged waste food d is sold at convenience stores, supermarkets, food departments of department stores, and the like, for example, food in trays and lunch boxes, cup-shaped foods, or aluminum pan-type instant foods. Examples of packaging materials include containers and films made of synthetic resin, paper packs, and aluminum foil.

  For the packaging waste food d, the packaging material is broken by the tray cutter 6 and the waste food inside is taken out. Then, the taken-out waste food is separated into low-fat waste food and high-fat waste food, and the separated low-fat waste food is separated into low-fat waste food c on the upstream side of the low-fat breaker 3. On the other hand, the separated high-fat waste food is joined to the high-fat waste food e on the upstream side of the high-fat breaker 7.

The vegetable-based waste food f is crushed by the crusher 9 and then put into the moisture adjustment tank 5 as a raw material for the low-fat liquid fermented feed.
The beverage-based waste food g is put in the beverage receiving tank 11 after the packaging material such as a paper pack is broken by the beverage-type crusher 10 and the packaging material is separated.

  Other waste foods h include, for example, miso soup discharged from school lunches provided at schools and hospitals, combs such as oden and yakitori discarded at convenience stores and supermarkets, and other miscellaneous items such as tsukemono, Chinese buns, hamburgers Various miscellaneous waste foods such as fried shrimp are mixed. Accordingly, since the low-fat waste food or the high-fat waste food cannot be separated from the other waste foods h, after passing through the crusher 12, those suitable for composting are dried by the dryer 13, and thereafter It is sent to the composting apparatus 14 and composted. And the thing suitable for a methane fermentation process among the other waste foods h is sent to the methane fermentation apparatus 15, and becomes a raw material of biogas production | generation.

  Next, the processing line of each sorted waste food will be specifically described. In FIG. 2, the low-fat waste food c is transported from the raw material pretreatment zone 2 by the conveyor 31 and put into the low-fat breaker 3. In the low-fat breaker 3, the soft film-like wrapping around the low-fat waste food c is broken, and the broken bag and the low-fat waste food c are separated by wind sorting. The low-fat waste food c is discharged from the low-fat breaker 3 to a circle feeder 32 having a conventionally known configuration, and is distributed to two conveying paths 33 and 34 here.

  The low fat waste food c distributed to the conveyance path 33 is sent to the low fat dryer 4 and dried by the low fat dryer 4 to become a low fat dry feed. On the other hand, the low-fat waste food c distributed to the conveyance path 34 is sent to the water content adjustment tank 5a or 5b and becomes a raw material for the liquid fermented feed.

  Next, the high-fat waste food e is transported from the raw material pretreatment zone 2 by the conveyor 71 and put into the high-fat breaker 7. The high fat breaking machine 7 has the same configuration as the low fat breaking machine 3. The high-fat waste food e separated from the broken bag by wind separation in the high-fat breaker 7 is discharged from the high-fat breaker 7 to a circle feeder 72 having a conventionally known configuration, where two systems of conveyance are carried out. Distributed to paths 73 and 74. The high fat waste food e discharged to the transport path 73 is sent to the high fat dryer 8a, and the high fat waste food e discharged to the transport path 74 is sent to the high fat dryer 8b.

The vegetable-based waste food f is conveyed by the conveyor 91 from the raw material pretreatment zone 2 and sent to the crusher 9. The vegetable waste food f crushed by the crusher 9 is sent to the water content adjustment tank 5a or 5b through the conveyance path 92 as a raw material for liquid fermented feed.
Next, the beverage waste food g is conveyed from the raw material pretreatment zone 2 by the conveyor 101 and sent to the beverage crusher 10. A flexible container such as a plastic bottle or a paper pack containing the beverage waste food g is broken by the beverage crusher 10 to separate the flexible container from the beverage waste food g. The separated beverage waste food g is stored in the beverage receiving tank 11.

  Next, the other waste food h is conveyed from the raw material pretreatment zone 2 to the crusher 12 by the conveyor 121. Among the other waste foods h that have been crushed by the crusher 12, those suitable for composting are sent to the dryer 13 through the conveyance path 122 and dried by the dryer 13. Then, it is sent to the composting apparatus 14 by the conveyor 131 and composted. Among the other waste foods h crushed by the crusher 12, those suitable for methane fermentation treatment are transported to the methane fermentation apparatus 15 through the transport path 123 by a container and become a raw material for forming biogas.

  The packaging waste food d is separated into a low fat waste food and a high fat waste food after the packaging material is broken by the tray cutter 6 and the packaging material is removed. Will be described with reference to FIGS. FIG. 3 is an elevation view of the tray cutter 6, and FIG. 4 is a plan view of the transport conveyor 61 of the tray cutter 6.

  3 and 4, the tray cutter 6 mainly cuts the transport conveyor 61 that transports the packaged food, the rotating body 621 that presses and supports the package waste food d on the transport conveyor 61, and the transported package waste food d. It comprises a cutter unit 62 having a cutter 622 to perform, a water tray 63 for receiving waste food or moisture scattered during cutting, and a frame 64. Although not shown in the drawings, safety covers are provided at various parts such as the front door and the side door of the tray cutter 6, the input unit 65 for supplying the packaging waste food d, and the discharge unit 66 for discharging the packaging waste food d.

The packaged waste food d input from the input unit 65 is transported at a maximum of 30 m / min using the transport conveyor 61 and is pressed and supported by the rotating body 621. The packaging waste food d sandwiched between the transport conveyor 61 and the rotating body 621 is cut at a substantially central portion by the cutter 622 and discharged from the discharge portion 66.
In the input part 65, as shown in FIG. 4, it throws in so that the packaging waste food d may be mounted in the approximate center part of the conveyance conveyor 61 by hand. One packaged waste food d is preferably placed in one partition space of the conveyor 61. At that time, 100 packaging waste foods d can be cut continuously per minute.

  As the circulatory body 621, a pair of chain conveyors that are disposed adjacent to each other with a gap in the circulatory direction is used. The orbiting body 621 has a sprocket that operates by engaging with the orbiting body 621, and as shown in FIG. 3, the input part side sprocket 623 is provided above the discharge part side sprocket 624. In addition, there is provided a pulling means for locally widening the rotation position of the rotation body 621 located above the attachment portion of the cutter 622. In the present embodiment, the tensioner 67 is used as the tension means, but the tension means is not limited to the tensioner as long as the circumferential position of the orbiting body 621 is locally widened.

  As shown in FIG. 4, the transport conveyor 61 is disposed adjacent to each other with a pair of conveyor belts having a partition space on the outer peripheral surface with a gap in the belt circumferential direction p. As shown in FIG. 4A, the partition space is formed by a plurality of partitions 611 provided on the outer peripheral side of the conveyor belt. And the packaging waste food d mounted in the partition space of the conveyance conveyor 61 is conveyed toward the rotation direction p like FIG.4 (b).

  In this embodiment, a plastic belt conveyor with two-divided bars is used as the transport conveyor 61, and the width of the partition space is approximately 150 mm. By using a plastic belt conveyor, even if the waste food or the seasoning contained in the waste food is scattered, it is difficult to corrode and can be easily washed. In consideration of cleanability, a motor with a fully closed external fan or a waterproof brake by inverter control is used as power (see the specification and drawings of Japanese Patent Application No. 2007-106398 for further detailed configuration of the tray cutter 6). ).

  Next, a production line for low fat dry feed by a processing line on the downstream side of the low fat dryer 4 will be described. FIG. 5 is a system diagram showing a processing line on the downstream side of the low fat dryer 4, FIG. 6 is a vertical elevation view of the low fat dryer 4, and FIG. 7 is a side view of the same. 5-7, the low-fat waste food c that has been pneumatically transported through the conveyance path 33 is introduced from the inlets 411a-c that are dispersedly arranged at intervals in the longitudinal axis direction of the housing 41 of the low-fat dryer 4. It is put into the low fat dryer 4. Inside the low-fat dryer 4, a rotating shaft 42 disposed in the horizontal direction is provided, and the rotating shaft 42 is rotatably supported by support bases 421 disposed on both outer sides of the housing 41. The output of the drive motor 43 provided outside the low fat dryer 4 is transmitted to the rotary shaft 42 via the drive force transmission device 44.

  The low-fat waste food c dried by the low-fat dryer 4 is discharged from a discharge port 45a provided on the bottom surface on one end side of the housing 41 and a discharge port 45b provided on the side surface of the housing 41, and is conveyed to the conveyor 451. Then, the classification device 452 is reached. The low-fat waste food c having coarse particles is removed by the classification device 452, and the low-fat waste food c having uniform particles is cooled by the cooling device 453. Thereafter, the metal is removed by the magnet separator 454, stored in the product hopper 455, and shipped as a low-fat dry feed F1.

  A carrier gas intake 412 for promoting drying is also provided. The purpose of introducing the carrier gas is to promote moisture evaporation inside the dryer. A certain amount of outside air is fed into the low-fat dryer 4 and discharged from the exhaust gas outlet 46 together with the moisture evaporated inside. . The exhaust gas cg discharged from the discharge port 46 of the low fat dryer 4 is cooled by the condenser 462 after being removed by the dust collector 461. Thereafter, after the condensed water is removed from the water-sealed pot 463, the exhaust gas cg is sent to a deodorizing apparatus (not shown) to be deodorized.

  6 and 7, the low fat dryer 4 is provided with input ports 411a to 411c for the low fat waste food c and an exhaust gas exhaust port 46 which are dispersedly arranged at intervals in the longitudinal axis direction on the upper portion of the housing 41. It has been. A rotating body 47 is attached to the rotating shaft 42 inside the housing 41. The rotating body 47 is provided with end plates 471 on both sides, and a tube plate 472 is provided inside both end plates 471. A large number of hollow tubes 473 are installed between the tube plates 472.

  A sprocket 442 around which a chain 441 for transmitting the driving force of the driving motor 43 is wound is mounted on the driving side end of the rotating shaft 42, and the rotating shaft 42 is rotated by the driving force transmitting device 44 having such a configuration. In addition, a steam flow hole 422 is formed along the axial direction inside the rotating shaft 42, and a steam inlet 423 is provided at the driving side end of the rotating shaft 42, and heated steam s is supplied from the steam inlet 423. The heated steam s passes through the steam circulation holes 422, passes through the hollow tubes 473, passes through the steam circulation holes 422 formed in the driven-side rotating shaft 42, and the drain q is discharged from the drain outlet 424. It is comprised so that.

A large number of lifter mounting frames 474 are mounted on the outer peripheral surfaces of the end plate 471 and the tube plate 472 at equal intervals in the circumferential direction along the longitudinal axis direction of the low-fat dryer 4. A number of lifters 475 are mounted on the lifter mounting frame 474 at intervals of 90 degrees in the circumferential direction. The lifters 475 are arranged in a distributed manner along the longitudinal direction of the housing 41. A plurality of support plates 476 that support the hollow tube 473 are disposed along the longitudinal axis direction of the housing 41.
With this configuration, the low-fat waste food c that has been put into the low-fat dryer 4 and has fallen to the bottom of the housing 41 can be lifted up in the housing 41 by the lifter 475.

  In the low fat dryer 4 having such a configuration, the low fat waste food c introduced into the housing 47 through the inlets 411a to 411c arranged in the longitudinal direction on the upper portion of the low fat dryer 4 is a rotating body. While being stirred by 47, heat drying is performed. That is, heating steam of 120 to 150 ° C. is flowed through the hollow tube 473, and the low fat waste food c is heated to 100 ° C. or less. By heating the low fat waste food c to such a temperature, an efficient drying process can be performed while preventing carbonization of the low fat waste food c.

  In addition, as shown in FIG. 8, the floor surface 41a of the housing 41 of the low fat dryer 4 is first laid with a dry product (for example, the remainder of the previous day's dry product) c1 obtained by drying the low fat waste food. Since the raw cooked rice / starchy c2 was placed thereon and preliminarily dried, the raw cooked rice / starch c2 can be prevented from being burned and agglomerated.

  The low-fat waste food c is introduced from the inlets 411a to 411c, and the low-fat waste food c lowered near the bottom of the housing 41 is stirred by the lifter 475 while the low-fat waste food c is stirred by the rotating body 47 In the housing 41, the low-fat waste food c that has been dried at a similar rate along the longitudinal direction of the housing 41 and the raw low-fat that has not been dried. The system waste food c will be mixed.

  Therefore, the low-fat waste food c is dried not only by evaporation of moisture but also by movement of water to the surrounding low-fat waste food c, so that there is no self-disintegration, and a drying process that retains the original shape is possible. Therefore, it is possible to produce a low-fat dry feed that has a uniform particle size and is easy to eat. The low-fat waste food product c thus dried is smoothly discharged without stagnation from the discharge ports 45a and 45b. The low-fat waste food c is distributed and introduced so as to be uniform on the inlet side, but inside the low-fat dryer 4, by adjusting the attachment angle of the lifter 475, the low-fat waste food c is gradually fed back to the outlet 45 a And 45b. In FIG. 7, since the rotary body 7 rotates in the direction of the arrow, the low-fat waste food product c that has been dried is discharged from the discharge port 45a and over the bank 451 of the discharge port 45b.

  Next, a production line for high fat dry feed by processing on the downstream side of the high fat dryer 8a or 8b will be described. 9 is a system diagram showing a processing line on the downstream side of the high fat dryer 8a or 8b, and FIG. 10 is an enlarged view of the inside of the high fat dryer 8a or 8b. In FIG. 8, the high-fat waste food e that has been pneumatically transported through the transport path 73 or 74 is input into the housing 81 from the input port 811 disposed on the upper inlet side of the housing 81 of the high-fat dryer 8a or 8b. Is done. A rotation shaft 82 disposed in the horizontal direction is provided inside the housing 81, and is rotatably supported by support tables 821 disposed on both sides of the housing 81.

  The output of the drive motor 83 provided outside the housing 81 is transmitted to the rotary shaft 82 via the drive force transmission device 84. The high-fat waste food e dried by the high-fat dryer 8a or 8b is discharged from the discharge port 85 provided on the outlet side in the longitudinal axis direction of the housing 81, and reaches the classification device 852 via the conveyor 851. The high fat waste food e having coarse particles is removed by the classifying device 852, and the high fat waste food e having uniform particles is cooled by the cooling device 853. Thereafter, the metal is removed by the magnet separator 854, stored in the product hopper 855, and shipped as a high fat dry feed F2. The discharge port 85 has the same configuration as the discharge port 45 b provided on the side surface of the low fat dryer 4.

  In addition, a carrier gas intake 812 is provided in the upper part on the inlet side of the housing 81 to promote moisture evaporation inside the dryer. The exhaust gas eg discharged from the discharge port 86 of the housing 81 is removed by the dust collector 861 and then cooled by the cooling water r by the condenser 862. Then, after the condensed water is removed from the water sealing pot 863, the exhaust gas eg is sent to a deodorizing device (not shown) and subjected to deodorization treatment.

  As shown in FIG. 10, a large number of abacus-shaped hollow disks 87 having the same diameter are arranged in parallel on the rotating shaft 82 inside the housing 81 with a minute interval in the axial direction of the rotating shaft 82. Similarly to the low-fat dryer 4, a steam flow hole (not shown) is formed in the rotation shaft 82 in the axial direction, and heated steam is injected from a steam inlet provided at the drive side end of the rotation shaft 82. The high fat waste food e put in the housing 81 is heat-dried by passing through the inside of the hollow disk 87 through the vapor circulation hole. Thereafter, heat exchange with the high-fat waste food e becomes a drain, and the drain is discharged from a drain outlet provided at the driven side end of the rotating shaft 82.

According to the high-fat dryer 8 a or 8 b having such a configuration, the high-fat waste food e introduced into the input port 811 is gradually dried while being stirred by the hollow disk 87. Further, since a stirring blade (not shown) is attached to the end of the hollow disk 87 at an angle for biasing the high fat waste food e toward the outlet, the high fat waste food e is directed toward the outlet. And move. Since a large number of rotating disks 87 are arranged on the rotating shaft 82 with minute gaps, the contact area with the high fat waste food e is large. The high fat waste food e is in contact with a large number of rotating disks 87 while being introduced from the inlet 811 and discharged from the outlet 85, so that the heat exchange efficiency is good. Therefore, it is possible to perform a good drying process even on waste foods with high fat content.
In addition, generation | occurrence | production of mold | fungi etc. can be prevented by making the moisture content into the manufactured low fat type dry feed F1 and high fat type dry feed F2 below 14 weight%.

  Next, the liquid fermented feed production line provided on the downstream side of the moisture adjustment tank 5a or 5b will be described with reference to FIG. First, in FIG. 2, the low-fat waste food c is stored in the moisture adjustment tank 5 a or 5 b via the bag breaker 3, and the vegetable waste food f is passed through the crusher 9 to the moisture adjustment tank 5 a or 5 b. Stored in.

  Next, in FIG. 11, in the packaging material separation facility 51 for separating the packaging material of the dairy beverage-based waste food i, the milk beverage system such as milk contained in a paper pack or pudding or yogurt contained in a synthetic resin container, for example. The waste food i is put into the hopper 511, and the bag breaker 512 breaks the packaging material such as a paper pack or a synthetic resin container. Then, the internal milk beverage waste food i is taken out and the empty paper pack j is separated from the milk beverage waste food i by the bag breaker 512, and the milk beverage waste food i is stored in the milk beverage receiving tank 513. Store.

  In the water content adjustment tank 5a or 5b, the milk beverage waste food i stored in the milk beverage receiving tank 513 is supplied to the water content adjustment tank 5a or 5b via the conduit 514, and the water w is supplied to the water content adjustment tank. Supply to 5a or 5b to adjust the moisture content of the raw material. That is, the mixture of the low-fat waste food c and the vegetable waste food f had a water content of about 60% by weight. Prepare to. In the water content adjustment tank 5a or 5b, the raw material is circulated using the circulation path 501a or 501b, and the water content adjustment tank 5a or 5b is stirred.

  Next, the raw material liquid in the moisture amount adjusting tank 5a or 5b is sent to the sterilizer 52 through the pipe line 502 to perform sterilization treatment. The raw material liquid sent to the tank 521 belonging to the sterilizer 52 circulates between the heater / cooler 523 and the tank 521 via the circulation line 522. Heating steam s is supplied to the heating / cooling device 523, and the raw material liquid is subjected to indirect heat exchange with the heating steam s to be sterilized by being heated at a temperature of 80 ° C. for 3 minutes or more. This treatment reduces the number of common bacteria in the raw material solution, thereby creating an environment in which lactic acid bacteria added later can easily grow.

  After the raw material liquid is sterilized, the cooling water r is supplied to the heating / cooling device 523, and heat exchange with the raw material liquid is performed to cool the raw material liquid to 40 ° C. On the other hand, the milk beverage waste food i is supplied to the culture tank 531 of the lactic acid culture equipment 53 via the pipe 515, and the lactic acid bacteria are cultured in the culture tank 531. Thereafter, the raw material liquid sterilized in the tank 521 and the lactic acid bacteria cultured in the culture tank 531 are mixed with each other by the static mixer 54 and then sent to the fermentation tank 551 of the fermentation facility 55.

  The raw material liquid is fermented with lactic acid bacteria in the fermentation tank 551, and a liquid fermented feed can be produced. In the fermentation tank 551, the lactic acid bacteria mixed raw material liquid in the tank is held at a temperature of 35 to 40 ° C. for 16 hours or more by heat exchange with the hot water t by the external heating heat exchanger 552. That is, the raw material liquid in the tank is circulated by the liquid circulation pump 553, and the hot water t and the raw material liquid are heat-exchanged in the external heating heat exchanger 552 installed on this circulation line, whereby the fermentation tank 551. The inner raw material liquid is held in the above temperature range. Thereby, the raw material liquid is fermented with lactic acid bacteria, and the liquid fermented feed F3 is manufactured and shipped.

  As described above, in the present embodiment, it is discarded at a convenience store, a supermarket, a food factory, a convenience vendor, or the like at the expiration date of consumption or the expiration date and is mainly packaged in a packaging material, or at a restaurant, school, or hospital. Consumable waste food b in which the rest of the food cooked for school lunch is discarded is accumulated in the accumulation place 1. Then, the accumulated waste food is separated into low fat waste food c, high fat waste food e, vegetable waste food f, beverage waste food g, and other waste food h.

  In this case, the low fat waste food c and the high fat waste food e are separated from the waste food a from which the low fat waste food c and the high fat waste food e can be separated. Further, the packaged waste food d can be easily separated into the low fat waste food c and the high fat waste food e by breaking with the tray cutter 6. The vegetable waste food f can be separated from the consumer waste food b.

  Thereafter, the low-fat waste food c is dried to produce a low-fat dry feed F1, and the high-fat waste food e is dried to produce a high-fat dry feed F2. Since a part of the waste food c and the vegetable waste food f are fermented with lactic acid bacteria to produce the liquid fermented feed F3, the low fat dry feed F1 and the low fat liquid feed suitable as pig feed F3 and high-fat dry feed F2 that can be used as chicken feed can be produced simultaneously. The high-fat dry feed F2 is also suitably used as a feed (food) for animals other than domestic animals such as pets and ornamental animals such as pet food and fish food.

  Moreover, after separating the low-fat waste food c and the high-fat waste food e from the waste food mixed with various miscellaneous foods, a recycling process is performed on the sorted waste food. Therefore, the individual recycling processing line can be simplified. Therefore, a low-cost feed can be manufactured.

In addition, by drying with the low fat dryer 4 equipped with the rotating body 47 having the hollow tube 473 suitable for drying the low fat waste food c, the self-collapse is reduced and the original shape is kept uniform. A low-fat dry feed F1 with a small particle size can be produced.
The floor 41a of the housing 41 of the low-fat dryer 4 is first laid with a dry product c1 obtained by drying the low-fat waste food c, and the raw cooked rice / starch c2 is placed thereon. By being pre-dried, raw rice and starchy c2 can be prevented from being burned and agglomerated.

  In addition, by using a high fat dryer 8a or 8b equipped with a hollow disk 87 suitable for drying high fat waste food e, the heating effect is enhanced and the stickiness of high fat is eliminated and handled. Can be made easier.

  Furthermore, since the milk beverage waste food i separated from the beverage waste food g is reused for the production of the liquid fermented feed F3, the liquid fermented feed F3 can be produced at low cost.

  ADVANTAGE OF THE INVENTION According to this invention, several types of good quality feed can be simultaneously manufactured at low cost from various miscellaneous waste foods discarded from a convenience store, a supermarket, etc. or a restaurant, a school, a hospital, etc.

It is a block diagram of the processing line which concerns on embodiment of this invention. It is a systematic diagram which shows the processing line of each waste food sorted in the said embodiment. It is an elevation view of the tray cutter 6 of the embodiment. It is a top view of the tray cutter 6 of the embodiment. It is a systematic diagram which shows the processing line of the downstream of the low fat dryer 4 of the said embodiment. It is a vertical elevation view of the low fat dryer 4 of the embodiment. It is a side view of the low fat dryer 4 of the embodiment. It is a partial cross section figure of the low fat dryer 4 which performs preliminary drying in the said embodiment. It is a systematic diagram which shows the processing line of the downstream of the high fat dryer 8a or 8b of the said embodiment. It is an internal enlarged view of the high fat dryer 8a or 8b of the said embodiment. It is a systematic diagram which shows the liquid fermented feed production line provided in the downstream of the moisture content adjustment tank 5a or 5b of the said embodiment.

Explanation of symbols

3 Low-fat breaker 4 Low-fat dryer 5a, 5b Moisture adjustment tank 6 Tray cutter 7 High-fat breaker 8a, 8b High-fat dryer 14 Composting device 15 Methane fermentation device 41a Floor 47 Rotating body 52 Sterilization Equipment 53 Lactic acid culture equipment 55 Fermentation storage equipment 82 Rotating shaft 87 Hollow disk 473 Hollow tube c Low fat waste food e High fat waste food h Other waste food s Heating steam

Claims (5)

In a waste food recycling plant that produces multiple types of feed from discarded food,
Among the waste foods, a part of the low-fat waste foods separated from the waste foods that can be separated from the low-fat waste foods is dried with a dryer to produce a low-fat dry feed,
A production line for producing a liquid fermented feed by subjecting the rest of the low-fat waste food to lactic acid fermentation;
Of the waste food, a production line for producing a high fat dry feed by drying a part of the high fat waste food separated from the waste food capable of separating the high fat waste food with a dryer;
A line for composting a part of the waste food that is difficult to sort out the low fat waste food or the high fat waste food among the waste food,
A waste food recycling plant comprising: a line for producing biogas by methane fermentation of the remainder of the waste food. A dryer provided in the production line for low fat dry feed,
It has a dry space that can be sealed inside, and includes a rotating body including a plurality of hollow tubes arranged in parallel in the dry space at intervals in the lateral direction, and a heating medium is supplied to the hollow tubes. 2. The waste food recycling plant according to claim 1, wherein the low-fat waste food put into the drying space is stirred by the rotating body and dried by heating. A dryer provided in the production line for high fat dry feed,
There is a dry space that can be sealed inside, and a rotating shaft that is disposed laterally in the drying space and a plurality of hollow disks that are arranged in parallel with the rotating shaft in the axial direction of the rotating shaft. The waste according to claim 1, further comprising: heating steam supplied to the hollow disk, and heating and drying the high-fat waste food put into the drying space with the hollow disk. Food recycling plant. The liquid fermented feed production line is
A water content adjustment tank for storing low-fat waste food and supplying milk drink waste food, vegetable waste and water to adjust the water content of the low-fat waste food,
An apparatus for heat-sterilizing the low-fat waste food with adjusted water content;
A facility for culturing lactic acid bacteria using the dairy beverage-based waste food;
The fermentation tank which receives the low-fat waste food sterilized by heat and the lactic acid bacteria cultured by this lactic acid culture equipment, and ferments the low-fat waste food with lactic acid. Waste food recycling plant. The waste foods that can separate low-fat waste foods or high-fat waste foods are mainly discarded from convenience stores, supermarkets, department store food departments, mass retailers, or food factories, and packed with flexible packaging materials. Discarded food,
The waste food which is difficult to separate low-fat waste food or high-fat waste food mainly consists of a collection of the remainder of food prepared for school lunch. Waste food recycling plant.