JP2003126800A - Refuse drying and volume reducing plant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refuse drying and volume reducing plant which is capable of removing the refuse sticking or entangled to or with agitating means in the process of drying and volume reducing the same and collapsing the refuse produced and solidified in a treating vessel. SOLUTION: This refuse drying and volume reducing plant is provided with the treating vessel 5 of a blind cylindrical shape in which the refuse to be treated is housed, the agitating means 6 which is disposed at a bottom 5a of the treating vessel 5 within this vessel, a recovering shaft 3 which is connected to the agitating means 6 from outside the treating vessel 5 and rotates the agitating means 6, a rotary driving source 4 which rotates the revolving shaft 3 and heating means 2 which heats the inside of the treating vessel 5, in which the central part of the agitating means 6 is provided with a steam jetting head 7 for jetting steam near the agitating means 2 and is provided with a steam feeding pipe 8 for feeding the steam to the steam jetting head 7 through the center of the revolving shaft 3.

Description

Description: BACKGROUND OF THE INVENTION [0001] The present invention relates to vegetables, fish, bread,
The present invention relates to a garbage drying and volume reducing apparatus for heating and drying garbage such as rice, cream, shake, paper containers containing water, fresh flowers and the like, and paper garbage such as wrapping paper and paper napkins. 2. Description of the Related Art For example, in a fast food store such as a hamburger shop found in an urban area, garbage such as hamburgers left uneaten or hamburgers that have passed time are set in a waste container together with a paper container. Discarded in the garbage bag. In this case, when the garbage bag is full, the full garbage bag is taken out and replaced with a new garbage bag. Such garbage bag replacement work is frequently performed in proportion to the number of customers. When garbage bags are exchanged frequently, it is necessary to secure a storage place for a large amount of garbage bags. In addition, the cost required to have a local government collect full garbage bags increases. Therefore, recently, a heating means and a processing tank provided with a stirring means therein are provided, and the waste housed in the processing tank is stirred by the stirring means while being heated by the heating means to be dried and reduced in volume. Many refuse drying and volume reducing devices have been proposed. According to such a refuse drying and volume reducing device, the volume of refuse can be reduced, so that the space for temporary storage is narrower than before, and the cost required for collection by a local government or the like can be significantly reduced. [0004] However, the agitation means for agitating the refuse in the processing tank is liable to adhere or entangle with the mechanism, and the garbage contained in the processing tank is heated by the heating means. If the refuse adheres to or is entangled with the agitation means in the process of drying and reducing the volume by agitation, the agitation effect of the refuse by the agitation means is reduced, and the refuse is dried and reduced in volume. Thereafter, when discharging the processed material from the processing tank, there is a problem that a troublesome operation such as removing dried dust attached to or entangled with the stirring means is required. In the process of drying and reducing the volume of the refuse stored in the processing tank by heating it with the heating means and stirring it with the stirring means, the refuse is solidified in the processing tank. In addition, there is a problem that the agitation effect of the refuse is reduced, and after the drying and volume reduction of the refuse, the discharge of the processed material from the processing tank may be troublesome. It is an object of the present invention to remove refuse adhering to or entangled with the stirring means in the process of drying and reducing the volume, and to break up the lump generated in the treatment tank. Garbage drying and volume reducing apparatus. [0007] To achieve the above object, a waste drying and volume reducing apparatus according to the present invention comprises a bottomed cylindrical processing tank containing waste to be processed, Stirring means provided at the bottom of the tank, a rotating shaft connected to the stirring means from outside the processing tank and rotating the stirring means, a rotation drive source for rotating the rotating shaft, and heating the inside of the processing tank. A refuse drying and volume reducing device provided with a heating means, wherein a steam injection head for injecting steam near the stirring means is provided at a central portion of the stirring means, and the steam injection head penetrates the center of the rotating shaft. A steam supply pipe for supplying steam to the head is provided. [0008] With this configuration, when steam is supplied from the steam supply pipe to the steam jet head provided at the center of the stirring means, the steam is jetted from the steam jet head to the vicinity of the stirring means. Any debris adhering or entangled with the means is broken or unraveled and removed from the stirring means. In addition, the lump of dust generated in the processing tank is broken by the steam injected from the steam injection head. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a waste drying and volume reducing apparatus according to the present invention will be described below with reference to FIGS. 1 is a partially omitted vertical sectional view of the waste drying and volume reducing apparatus of this embodiment, FIG. 2 is a partially enlarged sectional view of FIG. 1, FIG. 3 is a plan view of the heating chamber shown in FIG. 1, and FIG. It is a bottom view of the processing tank stored. The refuse drying and volume reducing apparatus of the present embodiment has a bottomed cylindrical heating chamber 1 provided with a heating means 2, and a tip penetrating through the center of the bottom 1 a of the heating chamber 1 to project into the heating chamber 1. Rotating shaft 3, a rotation drive source 4 for rotating the rotating shaft 3 outside the heating chamber 1, and a bottomed cylindrical shape for accommodating garbage to be treated, which can be attached to and detached from the heating chamber 1. A processing tank 5 housed in the processing tank 5, and a rotary shaft 3 provided at the center of a bottom 5 a in the processing tank 5.
A stirring means 6 which is connected to and rotates to stir and break the refuse contained in the processing tank 5, and a steam injection head 7 provided at the center of the stirring means 6 for injecting steam near the stirring means 6. A steam supply pipe 8 that passes through the center of the rotating shaft 3 to supply steam to the steam jet head 7, a lid 9 that closes the opening 1b of the heating chamber 1, and a pressure reducing unit that reduces the pressure in the heating chamber 2. 10 are provided. The details of the stirring means 6 provided in the processing tank 5, the steam jet head 7 provided at the center of the stirring means 6, and the steam supply pipe 8 for supplying steam to the steam jet head 7 will be described. 2, the bottom 5 of the processing tank 5 will be described.
A boss 11 penetrating through the center of a and projecting into the processing tank 5 at the tip is rotatably provided via a bearing 12, and the stirring blade 13 is fixed to the boss 11 projecting into the processing tank 5. The stirring means 6 is constituted. The steam jet head 7 is fitted to the tip of the boss 11 protruding into the processing tank 5, and the steam jet head 7 is provided near the stirring means 6, that is, the stirring blade 13
In addition, a number of injection holes 7a for injecting steam are formed near the fixed portion of the stirring blade 13 and the boss 11. And
At the center of rotation of the boss 11, a hole 11a opening into the steam jet head 7 is formed, and the tip of a steam supply pipe 8 passing through the center of the rotating shaft 3 is connected to the boss 11
Is removably inserted into the hole 11a. At the end of the steam supply pipe 8, a number of steam supply holes 8 for supplying steam into the steam jet head 7 are provided.
a is formed, and the steam supply pipe 8 is connected to a steam supply source (not shown), and the steam injection head 7 is opened and closed by opening and closing a valve (not shown) provided in the middle of the steam supply pipe 8. The steam can be arbitrarily supplied into the inside. The rotating shaft 3 and the steam supply pipe 8
Are sealed airtightly by appropriate sealing means so as not to hinder the rotation of the rotating shaft 3. Further, a plurality of connecting projections 3a are provided at the tip of the rotating shaft 3 projecting into the heating chamber 1 around a steam supply pipe 8 penetrating the center. At the bottom of 11, that is, at the end protruding out of the processing tank 5, a connection recess 11b is provided around the hole 11a so as to be detachably fitted to the connection protrusion 3a at a position facing the connection protrusion 3a. When the processing tank 5 is accommodated in the heating chamber 1, the tip of the steam supply pipe 8 is inserted into the hole 11 a of the boss 11, and the connecting projection 3 a provided at the tip of the rotary shaft 3 is provided. Are fitted into a coupling recess 11b provided at the bottom of the boss 11, so that the rotation of the rotating shaft 3 is transmitted to the boss 11. The heating means 2 of the heating chamber 1
In this case, the heating chamber 1 has a double structure of an inner cylinder wall 1c and an outer cylinder wall 1d having a common bottom portion 1a, and a tip between the inner cylinder wall 1c and the outer cylinder wall 1d is made of a sealing material. The interior space between the inner cylinder wall 1c and the outer cylinder wall 1d is a heat source chamber 15. The heating chamber 1 is connected to a heat source supply passage 16 for supplying a heat source to the heat source chamber 15 and a heat source discharge passage 17 for discharging a heat source passing through the heat source chamber 15. Heat source supply passage 16
Are connected to a heat source generator (not shown). In this embodiment, steam is used as the heat source, but the heat source may be hot water. The heating means 2 of the heating chamber 1 may be configured by embedding an electric heater in the cylindrical wall of the heating chamber 1 or winding the electric heater around the outer periphery of the cylindrical wall of the heating chamber 1, though not shown. Further, the heating means 2 of the heating chamber 1 does not necessarily need to be integrally supported by the heating chamber 1 as in this example, and another heating means may be separately provided. A rotary drive source 4 for rotating the rotary shaft 3 applies a rotational force to the rotary shaft 3 by a gear mechanism or the like, not shown. Further, the heating chamber 1 is connected to a vacuum passage 19 connected to a vacuum pump 18, and these constitute a pressure reducing means 10 for reducing the pressure inside the heating chamber 1. The heating chamber 1 is fixed to the housing 20 with its central axis inclined (for example, about 45 °) with respect to a vertical line with its opening 1b facing upward.
Further, a lid 9 for closing the opening 1b of the heating chamber 1
Is supported by a guide rail (not shown) provided in the housing 20 and moves parallel to the opening surface of the heating chamber 1 so that the opening 1b of the heating chamber 1 can be airtightly closed. ing. The lid 9 is mounted on a chain 23 suspended on a sprocket 22 rotated by a motor 21 to open and close the lid 9, and is driven by the motor 21. The processing tank 5 detachably accommodated in the heating chamber 1 has a handle 24 at its opening. When the processing tank 5 is accommodated in the heating chamber 1, the handle 24
The height does not protrude outside from the opening 1b. The inner surface of the processing tank 5 serves as a resistor for garbage, which slides on the inner surface of the processing tank 5 by the rotation of the stirring means 6 and tries to rotate together.
Is protruding. The processing tank 5 provided with the stirring means 6 in the bottom portion 5a as described above is detachably accommodated in the heating chamber 1, but when the processing tank 5 is accommodated in the heating chamber 1, the heating chamber 1, a predetermined gap S is maintained between the inner surface of the first processing tank 5 and the outer surface of the processing tank 5, and the distal end of the steam supply pipe 8 is connected to the hole 11a of the boss 11 and the connecting convex portion 3a provided at the distal end of the rotary shaft 3. A guide / spacer 26 is provided on the inner surface of the heating chamber 1 for aligning with the connecting recess 11b provided at the bottom of the boss 11 and for preventing the co-rotation of the processing tank 5. This guide and spacer 2
6 need not necessarily be provided on the inner surface of the heating chamber 1, but may be provided on the outer surface of the processing tank 5. The inner surface of the heating chamber 1 and the processing tank 5
Since the gap S is formed between the inner surface of the heating chamber 1 and the outer surface of the processing tank 5, the heat transfer from the heating chamber 1 to the processing tank 5 is mainly performed by radiant heat transfer. In order to improve the emissivity and increase the amount of heat transfer, a radiant paint that promotes radiation is applied. Okitsumo Color Freon 10F-4 (manufactured by Okitsumo Corporation) is used as the radiation paint. In the garbage drying and volume reducing apparatus thus configured, garbage is put into the processing tank 5 accommodated in the heating chamber 1, the motor 21 is driven, and the lid 9 is closed in the closing direction. , The opening 1b of the heating chamber 1 is closed, and the stirring means 6 in the processing tank 5 is rotated to stir the garbage while the steam serving as the heat source of the heating means 2 is supplied to the heat source supply passage 1.
From 6, it is sent to the heat source chamber 15 of the heating chamber 1, and the inside of the heating chamber 1 is evacuated by the vacuum pump 18 of the pressure reducing means 10 to reduce the pressure. As a result, the refuse in the treatment tank 5 is heated under reduced pressure while being agitated and broken by the stirring means 6, and the evaporation of water in the refuse is promoted due to a decrease in the saturation temperature due to the reduced pressure. The drying efficiency of the refuse in the tank 5 is improved, and the refuse is dried and reduced in a short time. In the process of drying and reducing the refuse, when the refuse adheres to or is entangled with the stirring means 6, When steam is supplied from the steam supply pipe 8 to the steam injection head 7 provided at the center of the stirring means 6, steam is injected from the injection holes 7a of the steam injection head 7 to the vicinity of the stirring means 6, and the injected steam is injected. The dust adhering to or entangled with the stirring means 6 by the steam is broken or broken down and removed from the stirring means 6. In addition, the lump of dust generated in the processing tank is broken by the steam injected from the steam injection head 7. As described above, according to the refuse drying and reducing apparatus according to the present invention, a bottomed cylindrical treatment tank for accommodating refuse to be treated, and a bottom provided in the treatment tank at the bottom thereof Refuse drying comprising a stirring means provided, a rotating shaft connected to the stirring means from outside the processing tank and rotating the stirring means, a rotation drive source for rotating the rotating shaft, and a heating means for heating the inside of the processing tank. In a volume reduction device, a steam injection head for injecting steam near the stirring means is provided at a center portion of the stirring means,
Since a steam supply pipe for supplying steam to the steam ejection head is provided through the center of the rotation shaft, steam is supplied from the steam supply pipe to a steam ejection head provided at the center of the stirring means. Thereby, the steam is injected from the steam injection head to the vicinity of the stirring means, and the dust attached to or entangled with the stirring means is broken or broken by the injected steam, so that the dust can be removed from the stirring means. It is also possible to break down the lump of refuse generated in the treatment tank by the steam injected from the steam jet head, so that the agitation effect of the refuse is not reduced, and the refuse is dried and reduced in volume. After the treatment, when the treated material is discharged from the treatment tank, the troublesome work of removing the dried dust attached to or entangled with the stirring means is eliminated, and the treatment is eliminated. Becomes the discharge of treated product from the inner can be easily performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially omitted longitudinal sectional view showing an example of an embodiment of a refuse drying and volume reducing apparatus according to the present invention. FIG. 2 is a partially enlarged sectional view of FIG. FIG. 3 is a plan view of the heating chamber shown in FIG. FIG. 4 is a bottom view of a processing tank accommodated in the heating chamber shown in FIG. [Description of Signs] 1 Heating chamber 1a Bottom 1b Opening 1c Inner cylinder wall 1d Outer cylinder wall 2 Heating means 3 Rotating shaft 3a Connecting projection 4 Rotation drive source 5 Processing tank 5a Bottom 6 Stirring means 7 Steam injection head 7a Injection hole Reference Signs List 8 steam supply pipe 8a steam supply hole 9 lid 10 pressure reducing means 11 boss 11a hole 11b connecting recess 12 bearing 13 stirring blade 14 sealing material 15 heat source chamber 16 heat source supply passage 17 heat source discharge passage 18 vacuum pump 19 vacuum evacuation passage 20 housing 21 Motor 22 Sprocket 23 Chain 24 Handle 25 Projection 26 Guide and spacer S Gap

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Tetsushi Nakai             7 Horie-cho, Matsuyama-shi, Ehime Miura Industrial Co., Ltd.             In the company (72) Inventor Katsunori Matsunaga             7 Horie-cho, Matsuyama-shi, Ehime Miura Industrial Co., Ltd.             In the company F term (reference) 3L113 AA10 AB03 AB05 AC58 AC67                       BA00                 4D004 AA03 AB01 CA04 CA15 CA42                       CA50 CB08 CB13 CB27 CB31                       CC03

Claims (1)

Claims: 1. A bottomed cylindrical processing tank for accommodating refuse to be processed, a stirring means provided in the bottom of the processing tank, and a stirring means provided from outside the processing tank. A rotary shaft for connecting and rotating the stirring means, a rotary drive source for rotating the rotary shaft, and a refuse drying and volume reducing device including a heating means for heating the inside of the processing tank, wherein the central part of the stirring means Is provided with a steam injection head for injecting steam near the stirring means,
A refuse drying and volume reducing apparatus, wherein a steam supply pipe is provided to supply steam to the steam jet head through the center of the rotating shaft.