KR20230150305A - organic waste processing equipment - Google Patents

Abstract

The task is to reduce untreated waste in organic waste treatment equipment.
The organic waste treatment device includes a reaction vessel (1) for accommodating the treated material, an opening/closing cover (141) for opening and closing the discharge side opening (114) formed at the bottom of the reaction vessel (1), and a A stirring device for stirring the treated material is provided. The opening/closing cover 141 closes the discharge side opening 114 in the closed state, and the upper surface portion 141a of the cover exposed to the inner space 111 of the reaction vessel 1 is connected to the vessel of the reaction vessel 1. It is formed close to the inner wall surface (11a).

Description

organic waste processing equipment

The present invention relates to an organic waste treatment device.

Recently, as a treatment technology for organic waste, a device that hydrolyzes and treats waste in a subcritical state using high-temperature, high-pressure saturated water vapor has been attracting attention as an alternative to incineration using a conventional incinerator or burying in the ground. (For example, see Patent Document 1).

In this type of organic waste treatment device, the treated material is put into a sealable reaction container, and then the treated material is hydrolyzed while stirring while the inside of the reaction container is in a subcritical state. The product after treatment is taken out through the discharge side opening formed at the bottom of the reaction vessel.

In a conventional organic waste treatment device, an opening/closing valve is formed to open and close a discharge port connected to the discharge side opening of the reaction vessel. However, a space in which the treated material cannot be stirred is created between the valve body of the opening/closing valve and the internal space of the reaction vessel, and a part of the treated material remains in the space that cannot be stirred without being stirred, thereby causing the treated product to be treated. There was a problem that incompletely processed products were mixed together.

Japanese Patent Publication 2008-055285

The present invention was made to improve the above-mentioned current situation, and its purpose is to reduce the amount of untreated waste in organic waste treatment equipment.

The organic waste treatment apparatus of the present invention includes a reaction vessel for accommodating the treated matter, an opening and closing cover for opening and closing the discharge side opening formed at the bottom of the reaction vessel, and a stirring device for stirring the treated matter in the reaction vessel, , the opening/closing cover closes the discharge side opening in a closed state, and the upper surface of the cover exposed to the inner space of the reaction vessel is formed close to the inner wall surface of the reaction vessel.

The inner wall surface of the container around the discharge-side opening may be curved concavely, and the upper surface portion of the lid may be curved concavely along the inner wall surface of the container.

The inner wall surface of the container around the discharge-side opening may be substantially concave spherical, and the upper surface of the lid may be curved into a substantially concave spherical shape.

The opening/closing cover includes a normal cover body mounted on the discharge-side opening, and a cover body having a cover convex portion fitted into the cover body, and the inner peripheral surface of the cover body is tapered so that the inner space side of the container is narrow. The outer peripheral surface of the cover convex portion may be formed in a tapered shape along the inner peripheral surface of the cover main body.

A suction mechanism for depressurizing the internal space of the reaction vessel is connected to a discharge pipe connected to the reaction vessel, the internal space of the reaction vessel containing the treated matter is brought into a subcritical state by saturated water vapor, and the treated matter is brought into the subcritical state. After hydrolysis while stirring by a stirring device, before opening the opening/closing cover, the vapor in the inner space may be sucked in by the suction mechanism to bring the inner space close to external air pressure.

A stand supporting the reaction vessel may be provided, and the reaction vessel may be supported on the stand via a load cell.

Additionally, a frame-like metal member surrounding the discharge port may be interposed between the reaction vessel and the load cell when viewed from the top.

An input pipe for introducing liquid waste may be connected to the reaction vessel.

The organic waste treatment device of the present invention can reduce the amount of untreated waste.

1 is a schematic front view showing one embodiment of an organic waste treatment device.
Fig. 2 is a schematic rear view showing the embodiment.
Fig. 3 is a schematic right side view showing the embodiment.
Fig. 4 is a schematic left side view showing the embodiment.
Fig. 5 is a schematic plan view showing the embodiment.
Fig. 6 is a schematic bottom view showing the embodiment.
Figure 7 is a schematic front view showing an enlarged reaction vessel of the same embodiment.
Fig. 8 is a schematic rear view showing an enlarged reaction vessel of the same embodiment.
Fig. 9 is a schematic right side view showing an enlarged reaction vessel of the same embodiment.
Fig. 10 is a schematic left side view showing an enlarged reaction vessel of the same embodiment.
Fig. 11 is an enlarged front cross-sectional view showing the lower part and stand of the reaction vessel.
Fig. 12 is a perspective view showing the lower part of the container body in cross section.
Fig. 13 is an exploded rear perspective view for explaining the arrangement of the reaction vessel placed on the stand.
Fig. 14 is a rear perspective view showing the piping section together with the upper part of the stand.
Fig. 15 is an exploded rear perspective view for explaining the arrangement of the reaction vessel placed on the stand in another embodiment.
Fig. 16 is an enlarged front view showing the lower part of the container body of the same embodiment.
Fig. 17 is a schematic side view showing the upper part of a container according to another embodiment.

EMBODIMENT OF THE INVENTION Below, embodiment of the organic waste processing apparatus of this invention is described based on drawing. In the following description, phrases such as "forward and backward" and "left and right" are used to specify the direction, but the direction in which the rotation axis of the stirring device extends is considered the left and right direction, and the direction perpendicular to the left and right direction and the vertical direction is referred to as the front and rear direction. It is being defined. These words are used for convenience of explanation and do not limit the technical scope of the present invention.

[Short composition of the whole]

1 to 6 are schematic front views, back views, right side views, left side views, top views, and bottom views showing one embodiment of an organic waste treatment device. 7 to 10 are schematic front, rear, right, and left views showing the stand in cross section and enlarged views of the reaction vessel 1.

The organic waste treatment device 100 includes a reaction vessel 1 for accommodating the treated material, and a discharge side opening 114 formed at the bottom of the container body 11 of the reaction vessel 1 to open and close the discharge side opening 114. It is provided with a cover 141 and a stirring device 2 for stirring the treated material in the reaction vessel 1. The organic waste treatment device 100 supplies processed materials, such as organic waste, into a sealable reaction vessel 1, and then high-temperature and high-pressure saturated water vapor is injected into the reaction vessel 1 from a steam inlet pipe 12. It is brought to a subcritical state, and the treated material is hydrolyzed while being stirred by the stirring device 2. The product after treatment is taken out from the discharge side opening 114 formed at the bottom of the reaction vessel 1.

The container body 11 of the reaction container 1 is, for example, made of stainless steel, is formed into a substantially spherical shape, and is capable of accommodating the processing material. The container interior space 111 (see FIGS. 11 and 12) of the container body 11 is approximately spherical. The reaction vessel 1 is made of a metal such as stainless steel, and has a pressure resistance of up to, for example, about 5 MPa (megapascal). The reaction vessel (1) is installed on the stand (4).

At the top of the container body 11, an input portion 13 is formed to allow processing materials to be input into the container internal space 111. The input unit 13 includes an input container 131 with upper and lower openings connected to a circular input port 112 opened at the top of the container body 11, and an input device that sealably closes the upper end of the input container 131. It is provided with a side opening/closing cover (132).

A discharge portion 14 through which the processed product can be taken out from the container interior space 111 is formed at the bottom of the container body 11. The discharge portion 14 is provided with a discharge-side opening/closing cover 141 that sealably closes the circular discharge-side opening 114 opened at the bottom of the container body 11. Since the discharge side opening 114 is formed at the bottom of the container body 11, the processed product is released by gravity from the discharge port 148 (see FIGS. 11 and 12) formed in the discharge side opening 114. It is possible to discharge.

A steam injection pipe 12 is connected to the upper part of the container body 11 for injecting high-temperature and high-pressure saturated water vapor into the container internal space 111. A steam discharge pipe (15), a safety valve connection pipe (16), an air discharge pipe (17), a pressure gauge connection pipe (18), and a thermometer connection pipe (19) are connected to the side of the input container (131) of the reaction vessel (1). It is done. The pipes formed in the piping section 7 are connected to the pipes 12, 15, 16, and 17. A pressure gauge (not shown) for measuring the pressure in the inner space 111 of the container is connected to the pressure gauge connection pipe 18. A thermometer (not shown) for measuring the temperature of the inner space 111 of the container is connected to the thermometer connection pipe 19.

The stirring device 2 includes a rotating shaft 21 that passes through the container body 11 horizontally, a prime mover 22 for rotating the rotating shaft 21, and the power of the prime mover 22 to the rotating shaft 21. It is provided with a power transmission mechanism 23 that transmits power. A stirring blade (25) is mounted on the rotating shaft (21) via an arm (24). The stirring device 2 rotates the stirring blade 25 around the rotating shaft 21 within the container inner space 111 to stir the processed material contained in the container inner space 111.

[Configuration of discharge unit and opening/closing cover]

Fig. 11 is an enlarged front cross-sectional view showing the lower part of the reaction vessel 1 and the stand 4. Fig. 12 is a perspective view showing the lower part of the container body 11 in cross section, viewed obliquely from the left to the rear. Referring also to FIGS. 11 and 12, the configuration of the discharge portion 14 will be described.

As described above, the reaction vessel 1 is provided with an opening/closing cover 141 that opens and closes the discharge side opening 114 formed at the bottom of the vessel body 11. The opening/closing cover 141 is a sealed cover called a so-called clutch door, and includes a substantially cylindrical cover body 142 mounted on the discharge side opening 114 and a cover convex portion 143 fitted into the cover body 142. It is provided with a cover body 144 having a and a ring body 145 connecting the cover body 142 and the cover body 144. The cover body 142, the cover body 144, and the ring body 145 are made of metal.

The cover body 142 has a substantially cylindrical shape, protrudes to the outside of the container body 11, and is fixed to the container body 11 by welding or the like. The upper end of the cover body 142 is fitted into the discharge side opening 114. The inner peripheral surface 142b of the cover body 142 is formed in a tapered shape with a narrow side toward the inner space 111 of the container. The opening of the cover body 142 communicates with the inside and the outside of the container body 11, and forms an outlet 148.

The cover body 144 has a substantially cone-shaped cover convex portion 143 inserted into the cover main body 142, and a flange-shaped portion 146 that has a larger diameter than the cover convex portion 143 and is substantially disk-shaped. The outer peripheral surface 143b of the cover convex portion 143 is formed in a tapered shape along the inner peripheral surface 142b of the cover main body 142.

The ring body 145 is substantially cylindrical and has an inner diameter larger than the outer shape of the cover body 142 and the cover body 144. The ring body 145 has a plurality of main body side protrusions 145a protruding inward from the upper end of its inner peripheral surface, and a plurality of cover side protrusions 145b protruding inward from the lower end of its inner peripheral surface.

When the opening/closing cover 141 is closed, a plurality of main body protrusions 142c protrude outward from the lower end of the outer peripheral surface of the cover body 142 and a plurality of protruding portions protrude from the outer peripheral surface of the flange portion 146 of the cover body 144. The cover body protrusion 146a is sandwiched between the protrusions 145a and 145b of the ring body 145. As a result, the lower surface of the cover body 142 and the upper surface of the flange portion 146 of the cover body 144 come into close contact, and the gasket 142d, such as an O ring, formed on the lower surface of the cover body 142 is pressed and crushed, The discharge side opening 114 where the opening/closing cover 141 is mounted is sealed.

When opening the cover 141, the ring body 145 is rotated to position the cover side protrusion 145b between the cover protrusions 146a adjacent to the cover body 144. As a result, the cover body 144 can be removed from the ring body 145.

As shown in FIG. 11, the lid body 144 is connected to the lower outer peripheral surface of the container body 11 via a hinge member 147 having a substantially horizontal rotation axis 147a. The outer peripheral surface 143b of the cover convex portion 143 is formed in a narrow tapered shape on the container inner space 111 side, so that it rotates around the rotation axis 147a of the hinge member 147 and is attached to the cover main body 142. It is possible to insert it. Therefore, the opening and closing mechanism of the cover body 144 can be formed with a simple structure called the hinge member 147, and the manufacturing cost of the opening and closing cover 141 can be reduced. In addition, the opening and closing mechanism of the cover body 144 is not limited to the hinge member, and for example, after the cover convex portion 143 is pulled out straight along the central axis of the cover body 142 and the ring body 145, the outlet ( 148) may be configured to move to the outside of the lower position. In this case, the inner peripheral surface 142b of the cover main body 142 and the outer peripheral surface 143b of the cover convex portion 143 may not be tapered but parallel to the central axis of the cover main body 142.

However, as shown in FIGS. 11 and 12, when the opening/closing cover 141 is closed, the cover upper surface portion 141a of the opening/closing cover 141 closes the discharge side opening 114 and opens the container inner space 111. ) is exposed. The cover upper surface portion 141a is formed of the main body upper surface portion 142a of the cover main body 142 and the convex upper surface portion 143a of the cover convex portion 143.

When the opening/closing cover 141 is closed, the cover upper surface portion 141a is disposed close to the discharge side opening 114. As a result, the space where the treated material stays when the processed material is stirred by the stirring device 2 around the discharge side opening 114 can be eliminated, and the amount of untreated treated material can be reduced. In this embodiment, no step is formed between the outer peripheral edge of the cover upper surface portion 141a (here, the upper end of the cover main body 142) and the upper end of the opening of the discharge side opening 114. Additionally, in the cover upper surface portion 141a, no step is formed between the inner peripheral edge of the cover upper surface portion 141a and the outer peripheral edge of the convex upper surface portion 143a. As a result, the space where the treated material stays when the treated material is stirred can be reliably eliminated.

Additionally, the lid upper surface portion 141a is curved into a substantially concave spherical shape along the substantially concave spherical container inner wall surface 11a around the discharge side opening 114. As a result, even if the stirring blade 25 passing over the cover upper surface portion 141a is rotated close to the container inner wall surface 11a of the container body 11 when the stirring device 2 is driven, the stirring blade 25 and the cover remain intact. Contact with the upper surface portion 141a can be prevented, and stirring efficiency can be improved. In addition, the lid upper surface portion 141a may be located on the upper side (center side of the container body 11) with respect to the spherical shape of the container inner wall surface 11a to a degree that does not impede the rotation of the stirring blade 25. does not exist. For example, the cover upper surface portion 141a may be formed along a spherical shape with a larger diameter than the spherical shape of the container inner wall surface 11a.

In addition, the cover upper surface portion 141a may be located on the lower side (the side away from the center of the container body 11) with respect to the spherical shape of the container inner wall surface 11a to the extent that the processing material does not remain when the processing material is stirred. Does not matter. For example, the lid upper surface portion 141a may be formed along a spherical shape with a smaller diameter than the spherical shape of the container inner wall surface 11a, and may be located below the spherical shape of the container inner wall surface 11a. In addition, the outer peripheral edge of the cover upper surface portion 141a is located slightly below the upper end of the opening of the discharge side opening 114, so that the processed material is kept between the cover upper surface portion 141a and the inner wall surface 11a of the container when the processed material is stirred. It doesn't matter even if a level difference is formed that does not stay. The step can be used, for example, as a weld margin. Additionally, the container body 11 and the lid body 142 may be integrally formed.

In addition, the upper end of the cover body 142, which has an inner diameter of the same size as the opening diameter of the discharge side opening 114, is disposed against the outer wall of the container body 11 around the discharge side opening 114, and the cover body The convex upper surface portion 143a of 144 may be configured to close the entire opening of the discharge side opening 114. In this case, the discharge-side opening 114 constitutes a discharge port, and the cover upper surface portion 141a is composed of only the convex upper surface portion 143a.

In addition, the concave shape of the cover upper surface portion 141a does not have to be a substantially concave spherical shape as long as it is a concave shape that does not contact the stirring blade 25. For example, when the container body 11 is horizontally normal, the lid upper surface portion 141a of the opening/closing lid 141 can be curved concavely along the container inner wall surface of the container body 11.

[Composition of trestle]

Fig. 13 is a rear perspective view for explaining the placement configuration of the reaction vessel 1 on the stand 4. Fig. 14 is a rear perspective view showing the piping section 7 together with the upper part of the stand 4. The stand 4 will be described with reference to FIGS. 12 and 13.

The stand 4 is provided with four supports 40 standing on the device installation surface F. Each of the four pillars 40 is formed of H-beam steel with the steel axis along the left and right directions, and is arranged at the corners of a rectangle along the front and rear left and right directions. A first girder member 41 extending in the left and right direction is installed horizontally between the middle portions of the supports 40 arranged on the left and right. Between the mid-sections of the front and rear first girder members 41, a pair of left and right second girder members 42 extending in the front and rear directions are installed horizontally at intervals left and right. Between the middle portions of the left and right second girder members 42, a pair of front and rear third girder members 43 extending in the left and right directions are installed horizontally at intervals in the front and rear directions. The girder members 41, 42, and 43 are formed of H-beams of the same size (cross-sectional area) as the support column 40.

A fourth girder member 44 extending in the front-back direction is installed horizontally between the middle portions of the struts 40 arranged front and rear. The fourth girder member 44 is formed of H-beam steel of a smaller size than the support column 40. A brace 50 is formed on both left and right sides and the back of the base 4, connecting the lower part of the support 40 and the middle part of the first girder member 41 or the fourth girder member 44. The brace 50 is formed of L-shaped angle steel. No braces are formed on the front of the stand 4, so that workers working on the device installation surface F can easily enter and exit the stand 4 from the front.

A fifth girder member 45 forming an angle brace is formed at each of the four corners of the square surrounded by the second girder member 42 and the third girder member 43. Between the second girder member 42 and the fourth girder member 44, a pair of front and rear sixth girder members 46 extending in the left and right directions on the left and right extensions of the third girder member 43 are spaced in the front and rear direction. It is installed horizontally. Between the first girder member 41 and the third girder member 43 on the front side, between the first girder member 41 and the third girder member 43 on the rear side, between the first girder member 41 and the sixth girder member 43 on the rear side Between each of the girder members 46, a seventh girder member 47 extending in the front-back direction is installed horizontally. The girder members 45, 46, and 47 are formed of H-beams of a smaller size than the fourth girder member 44.

Between the front and rear sixth girder members 46, the eighth girder member 48 extending in the front and rear direction is installed horizontally. The eighth girder member 48 is formed of C-beam steel (groove section steel) of a smaller size than the girder members 45, 46, and 47. A ninth girder member 49 extending in the left and right direction is installed horizontally between the three seventh girder members 47 on the rear side and the girder members 42 and 44. The 9th girder member 49 is also installed horizontally between the 1st girder member 41 and the 6th girder member 46 on the front side. The ninth girder member 49 is formed of L-shaped angle steel of a smaller size than the eighth girder member 48.

The reaction vessel 1 is placed at the intersection of the second girder member 42 and the third girder member 43. The reaction vessel 1 is provided with four metal support legs 20 formed at equal intervals in the circumferential direction at the lower part of the outer peripheral surface of the vessel body 11. At the intersection of the second girder member 42 and the third girder member 43, a metal plate shape is formed by riding on the second girder member 42, the third girder member 43, and the fifth girder member 45. The container holder (61) is stuck. The support legs 20 of the reaction vessel 1 are placed on the vessel holder 61 via the load cell 62.

In this way, the stand 4 receives the load of the reaction vessel 1 with the supports 40 and girder members 41, 42, and 43 made of relatively large steel materials. In addition, a fifth girder member 45 constituting an angle brace is formed at the mounting point of the reaction vessel 1, and a fifth girder member 45 is formed on the vessel stand 61 mounted on the girder members 42, 43, 45 and fixed thereto. The reaction vessel 1 can be mounted. As a result, the stand 4 can secure the strength to support the reaction vessel 1 even if the sizes of the other girder members 44, 46 to 49 are relatively small, thereby reducing the weight and manufacturing cost of the stand 4. can do.

By the way, the organic waste treatment apparatus 100 of the present embodiment is provided with a load cell 62 between the support legs 20 of the reaction vessel 1 and the container holder 61 of the stand 4. The load cell 62 can be used to measure the weight of the processed material contained in the reaction vessel 1. If the weight of the treated material contained in the reaction vessel 1 can be known before starting the treatment, for example, depending on the moisture content of the treated material, water can be added into the reaction vessel 1 before starting the treatment to obtain an appropriate moisture content, thereby improving the treatment efficiency. can increase.

Additionally, each of the four support legs 20 of the reaction vessel 1 is mounted on a load cell 62, but as shown in FIGS. 15 and 16, the four support legs 20 and the load cell 62 You may interpose one frame-shaped metal plate member 68 surrounding the discharge portion 14 in between. According to this configuration, since the frame-shaped metal plate member 68 distributes the load of the reaction vessel 1, it is possible to prevent the load from being concentrated on one load cell 62, thereby reducing the load on the reaction vessel 1. It is possible to improve the measurement precision of the weight of the processed material received. In addition, during processing, the heat transmitted to the load cell 62 from the support leg 20 of the reaction vessel 1 can be dissipated by the frame-shaped metal plate member 68, so that the heat of the load cell 62 Damage can be prevented.

In addition, the shape of the frame-shaped metal plate member 68 is not limited to a rectangular frame shape, and may be a frame shape that can be placed on each load cell 62 while positioning the discharge port 148 within the frame. For example, the frame-like metal plate member 68 may be donut-shaped (annular).

Additionally, by interposing the load cell 62 between the reaction vessel 1 and the vessel holder 61, the gap between the vessel body 11 and the beam members 42, 43, and 45 increases. This makes it easier for the air around the reaction vessel 1 to flow during processing, improves the cooling properties of the lower part of the vessel body 11 and the load cell 62, and prevents damage to the load cell 62 due to heat. can do.

The explanation of trestle (4) continues. On the girder members 41 to 49, a first floor plate 63 made of metal is laid, excluding the mounting portion of the reaction vessel 1. A plurality of first safety guards 64 are formed on the first girder member 41 and the fourth girder member 44, standing along the first girder member 41 or the fourth girder member 44.

A first upper girder member 51 extending in the front-back direction or the left-right direction is installed between the upper ends of the neighboring struts 40 . The first upper girder member 51 is formed of H-beam steel of the same size as the fourth girder member 44. A metal top plate 65 is joined to the top of the support 40.

Between the front and rear first upper girder members 51, four second upper girder members 52 extending in the front and rear directions are installed horizontally. The four second upper girder members 52 are arranged at intervals in the left and right directions, and the input portion 13 of the reaction vessel 1 is between the two second upper girder members 52 near the center in the left and right directions. is placed. The second upper girder member 52 is formed of C-beam steel that is smaller in size than the seventh girder member 47 and larger in size than the eighth girder member 48.

Between the first upper girder member 51 and the second upper girder member 52, and between the adjacent second upper girder members 52, a plurality of third upper girder members 53 are spaced in the front-back direction. It is installed horizontally. A metallic second floor plate 66 is laid on the upper girder members 51 to 53. On the upper girder members 51 and 52, a plurality of second safety fences 67 are formed along the upper girder members 51 or 52.

Among the four second upper girder members 52, between the two second upper girder members 52 near the left and right centers, there are two third upper girder members 53 that sandwich the input portion 13 of the reaction vessel 1 back and forth. ) is formed. The rear of the input section 13 is an area for arranging and forming the piping section 7. While the second floor plate 66 is laid around the input portion 13, the second floor plate 66 is not laid in the arrangement forming area of the piping portion 7.

The upper girder members 52 and 53 are located at a higher position than the steam inlet pipe 12 of the reaction vessel 1, and are also positioned at a steam discharge pipe 15, a safety valve connection pipe 16, an air discharge pipe 17, and a pressure gauge connection pipe. It is formed at a lower position than (18) and the thermometer connection pipe (19). The steam inlet pipe 12 is accessible from the second floor portion (on the first floor plate 63) of the mount 4, and the pipes 16 to 19 are accessible from the third layer portion (on the second floor plate 66). It is possible. In the organic waste treatment device 100, the vapor injection system and the discharge system of the piping section 7 are arranged vertically.

In addition, the opening and closing cover 132 on the input side of the input part 13 of the reaction vessel 1 is accessible from the third layer (on the second floor plate 66), and the opening and closing cover 141 of the discharge part 14 is accessible from the third floor part (on the second floor plate 66). ) is accessible from the first floor (equipment installation surface (F)).

[Configuration of the piping section]

Next, the configuration of the piping section 7 will be described with reference to FIGS. 1 to 10 and 14. As shown in FIG. 9 and the like, the steam injection pipe portion 71 connected to the steam injection pipe 12 is arranged to extend backward from the steam injection pipe 12 in the anteroposterior direction. The pipe end of the steam injection pipe portion 71 is disposed at the rear of the stand 4 and is connected to a steam supply pipe 82 extending from the steam header 81. The steam header 81 collects steam supplied from a boiler (not shown).

In the middle portion of the steam injection piping section 71, an injection-side opening/closing valve 711, an injection flow rate adjustment valve 712, an injection-side separator 713, and a steam check valve 714 are formed in order from the rear side. The opening and closing operation mechanisms of the injection-side opening and closing valve 711 and the injection flow rate adjustment valve 712 are not shown, but the valves 711 and 712 may be automatically controlled or may be manually controlled. The inlet side separator 713 removes water droplets contained in the steam. The removed water droplets are discharged through a vapor water droplet drain pipe 715 that extends along the front-back direction from the lower part of the inlet-side separator 713 toward the rear. A check valve 716 is formed in the middle portion of the steam water dripping drain pipe 715.

The air discharge pipe portion 72 connected to the air discharge pipe 17 is arranged to extend backward from the air discharge pipe 17 in the front-back direction. In the middle portion of the air discharge pipe portion 72, an intake-side strainer 721, a steam trap 722, etc. are formed in order from the air discharge pipe 17 side. The air discharge piping section 72 removes solid components and water droplets contained in the gas discharged from the air discharge pipe 17 when steam is injected from the steam injection pipe 12 into the container internal space 111 through the injection-side strainer 721. ) and remove from the steam trap (722) and discharge. The water droplets removed from the steam trap 722 are discharged through an air drain pipe 723 extending along the front-back direction from the lower part of the steam trap 722 toward the rear.

The safety valve pipe portion 73 connected to the safety valve connection pipe 16 is arranged to extend backward from the safety valve connection pipe 16 in the front-back direction. The safety valve piping section 73 is provided with a safety valve 731 in its middle portion, and when the inner space 111 of the container rises above the set pressure during processing, the safety valve 731 operates to close the inner space of the container ( 111) It is designed to release steam and reduce pressure.

As shown in FIG. 10 and the like, the steam discharge pipe 15 is formed on the left side of the input cylinder 131 at the upper part of the reaction vessel 1. The steam discharge pipe portion 74 connected to the steam discharge pipe 15 extends to the left, then extends backward from the left side of the input tank 131 through the downward U-shaped solids trap 741, and then again to the right. It is bent and guided to the rear of the input container (131). In addition, the steam discharge pipe portion 74 is arranged to extend in the front-back direction toward the rear from a position near the input cylinder 131.

The downward U-shaped solids trap 741 is capable of removing relatively large solids from the exhaust vapor, and is accessible from the second layer portion of the stand 4 (on the first floor plate 63). Solids collected in the solids trap 741 can be removed by removing the blind flange formed at the bottom of the solids trap 741. Additionally, blind flanges may be formed at two points on the left and right sides of the bottom of the solids trap 741. In this way, when removing solids, etc. collected in the solids trap 741, the blind flanges at two points on the left and right are removed on both sides, the jig is inserted through the opening on one side into the inside of the solids trap 741, and the jig is passed through the opening on the other side. Since solid matter, etc. can be pushed out from the opening, maintainability is improved. Additionally, the solids trap 741 may be disposed behind the input container 131.

The steam discharge pipe portion 74 is branched from the rear of the input cylinder 131 into a main discharge pipe portion 742 and an emergency discharge pipe portion 747. Both the main discharge pipe portion 742 and the emergency discharge pipe portion 747 are arranged to extend in the front-back direction. Additionally, a vacuum pump (suction mechanism) may be connected to the steam discharge pipe portion 74 to improve injection efficiency by depressurizing the inner space 111 of the container with the vacuum pump after the treatment material is introduced but before vapor injection. In addition, after the treatment, the discharge-side opening/closing valve 744, which will be described later, is opened to proceed with steam discharge, and the pressure in the container inner space 111 becomes almost equal to the external air pressure (for example, when the external air pressure becomes + 0.02 MPa). It does not matter if the vapor in the inner space 111 of the container is sucked by a vacuum pump and the vapor is brought close to the external air pressure. As a result, the steam leakage sound, steam, and odor generated when opening the opening/closing cover 132 at the end of processing can be suppressed to the minimum. The vacuum pump may be automatically controlled or may be manually controlled.

The main discharge pipe portion 742 is sequentially provided with a discharge-side strainer 743, a discharge-side opening/closing valve 744, and a discharge flow rate adjustment valve 745 from the upstream side of the exhaust flow. The discharge side strainer 743 removes relatively small solids contained in the discharge vapor. The opening/closing operation mechanisms of the discharge-side opening/closing valve 744 and the discharge flow rate adjustment valve 745 are not shown, but the valves 744 and 745 may be automatically controlled or may be configured to be manually controlled. A condenser 746 that converts vapor into liquid is connected to the downstream side of the exhaust flow of the main discharge pipe portion 742. The condenser 746 is formed to be vertically long at the rear of the stand 4, and is accessible from the second floor portion (on the first floor plate 63).

A manual opening/closing valve 748 is formed in the middle portion of the emergency discharge pipe portion 747. In an emergency where the container inner space 111 rises above the set pressure and does not fall during processing, the manual opening/closing valve 748 can be opened to release steam from the container inner space 111 to reduce the pressure.

As can be seen from FIGS. 5, 9, 10, 14, etc., most of the pipes and parts constituting the piping section 7 are arranged collectively at the rear of the reaction vessel 1, thereby improving the maintainability of the piping system. good night. In addition, the piping section 7 is formed at a height position of the second upper girder member 52 of the pedestal 4 and is accessible from both the second and third floor sections, so maintainability is excellent in this respect as well. do.

In addition, the pipes and parts of the piping section 7 can be supported by a door-shaped frame formed on the second floor at the rear of the reaction vessel 1. The door-shaped frame can be formed by standing on the left and right second girder members 42 that are relatively large in size. In this way, a sturdy door-shaped frame can be formed, and the pipes and parts of the piping section 7 can be safely supported.

[Configuration of stirring device]

Next, the configuration of the stirring device 2 will be described with reference to FIGS. 7 to 10 and the like. As described above, the stirring device 2 includes a rotating shaft 21 that passes through the container body 11 substantially horizontally, a prime mover 22 for rotating the rotating shaft 21, and the prime mover 22. It is provided with a power transmission mechanism (23) that transmits power to the rotating shaft (21).

A pair of left and right bearing pedestals 211 are attached to the left and right side surfaces of the container body 11, protruding outward to the left and right. Both ends of the rotating shaft 21 are supported so as to rotate freely on bearings 212 formed on the bearing pedestal 211. Rotating shaft sprockets 213 are attached to both ends of the rotating shaft 21 on the left and right outside of the bearing 212.

The prime mover 22 is, for example, an electric motor with a reducer, and is mounted on and secured to the second girder member 42 and the seventh girder member 47 of the stand 4 at the rear of the reaction vessel 1. It is mounted on a support plate 221. The prime mover sprocket (223) is attached to the output shaft (222) of the prime mover (22). Additionally, as the prime mover 22, it is also possible to employ another prime mover such as an internal combustion engine or hydraulic motor.

The power transmission mechanism 23 includes a transmission rotation shaft 231 formed between the prime mover 22 and the reaction vessel 1. The transmission rotation axis 231 is arranged to extend in the left and right directions. A bearing base 232 is fixedly installed on each of the three seventh girder members 47 formed at a point close to the rear of the base 4. The left and right ends and the center portion in the left and right directions of the transmission rotation shaft 231 are supported so as to rotate freely on bearings 233 mounted on the bearing base 232.

A driven sprocket 234 is attached to the transmission rotation shaft 231 in front of the prime mover sprocket 223. A drive chain 235 is rotated between the prime mover sprocket 223 and the driven sprocket 234, enabling the power of the prime mover 22 to be transmitted to the transmission rotation shaft 231. Sprockets 223, 234 and drive chain 235 are covered with a cover 236.

Both ends of the transmission rotation shaft 231 are disposed at an angle from the rear lower side of the both ends of the rotation shaft 21. A transmission shaft sprocket (237) is attached to each end of the transmission rotation shaft (231). The left and right driven chains (238) are caught between the left and right rotation shaft sprockets (213) and the left and right transmission shaft sprockets (237) and are rotated. Accordingly, the power of the prime mover 22 is transmitted to the rotating shaft 21 via the power transmission mechanism 23, and the arm 24 and the stirring blade 25 are moved around the rotating shaft 21 within the container inner space 111. It is configured to stir the treated material by rotating it. Sprockets 213, 237 and driven chain 238 are covered with a cover 239.

Since the power of the prime mover 22 is transmitted to both ends of the rotating shaft 21 through the power transmission mechanism 23, even if a load is applied to the rotating shaft 21 during processing, the rotating shaft 21 is not twisted, ensuring durability. With this improvement, smooth stirring can be maintained. Additionally, by switching the prime mover 22 between forward rotation and reverse rotation during one processing, the stirring blade 25 may be rotated in the opposite direction to perform efficient stirring. In addition, efficient stirring may be performed by changing the rotational speed of the stirring blade 25 during one processing. For example, the rotational speed may be configured to be changeable to “high speed,” “medium speed,” and “low speed.” Does not matter.

In addition, since the prime mover 22 and the power transmission mechanism 23 are arranged to effectively utilize the empty space below the piping section 7, the organic waste treatment device 100 can be formed compactly. In addition, if the empty space on both left and right sides of the prime mover 22 on the second floor is effectively utilized as an installation area for the oil compressor 8 and the air compressor 9, a more compact organic waste disposal device 100 can be realized. You can.

[Other Embodiments]

Fig. 17 is a schematic side view showing the upper part of a container according to another embodiment. In the organic waste treatment apparatus 100 of the present embodiment, an input pipe 91 for introducing liquid waste is connected to the reaction vessel 1. This embodiment is configured so that liquid waste can be injected into the reaction vessel 1 from the inlet pipe 91 without opening or closing the opening/closing cover 132 on the inlet side.

The injection pipe 91 is connected to the side of the injection container 131. The end of the input pipe 91 on the opposite side to the reaction vessel 1 is connected to a tank 92 that stores liquid waste. The liquid waste stored in the tank 92 is, for example, a slurry-like liquid such as pig manure or sludge. In the middle part of the injection pipe 91, a first injection opening and closing valve 93 and a second injection opening and closing valve 94 are formed in series. Additionally, a washing water pipe 95 is connected to the midway portion of the injection pipe 91 between the first injection opening and closing valve 93 and the second injection opening and closing valve 94. The end of the washing water pipe 95 on the opposite side from the input pipe 91 is connected to a washing water supply unit 96 that supplies washing water. An opening/closing valve 97 for washing water is formed in the middle portion of the washing water pipe 95.

When injecting the liquid waste in the tank 92 into the reaction vessel 1, the first and second input opening and closing valves are closed in a state in which the input side opening and closing cover 132 and the discharge side opening and closing cover 141 are closed. (93, 94) are opened to allow liquid waste to flow into the reaction vessel (1). At this time, the discharge-side opening/closing valve 744 of the steam discharge pipe portion 74 is opened, and the vacuum pump (suction mechanism) connected to the steam discharge pipe portion 74 is operated to fill the inner space of the reaction vessel 1 ( 111) It is okay to reduce the pressure to improve the injection efficiency of liquid waste. Additionally, the on-off valve 97 for washing water may be opened to allow the washing water together with the liquid waste to flow into the inner space 111 of the container.

In this embodiment, liquid waste can be injected into the reaction vessel 1 from the inlet pipe 91 with the opening/closing cover 132 on the inlet side closed. Accordingly, the foul odor emitted from the liquid waste can be prevented from spreading to the surroundings of the reaction vessel 1, thereby improving the working environment. Additionally, when depressurizing the container interior space 111 with a vacuum pump connected to the vapor discharge pipe portion 74, a deodorizing device may be connected to the middle portion of the vapor discharge pipe portion 74 to prevent the emission of bad odor. .

After pouring the liquid waste into the reaction vessel 1, the first on-off valve 93 for input is opened, the on-off valve for second input 94 is closed, and the on-off valve for washing water 97 is also opened. , washing water is introduced from the washing water supply unit 96 through the washing water pipe 95 into the input pipe 91, and the injection pipe 91 is cleaned. The portion of the input pipe 91 close to the reaction vessel 1 is inclined downward toward the reaction vessel 1. This makes it difficult for liquid waste to remain inside the portion of the injection pipe 91 close to the reaction vessel 1. Additionally, when the inside of the reaction vessel 1 is brought to a subcritical state with high-temperature and high-pressure saturated water vapor to hydrolyze the liquid waste, the first charging opening/closing valve 93 is closed. The second injection on-off valve 94 and the washing water on-off valve 97 are less expensive than the first injection on-off valve 93 because high pressure is not applied during processing, and therefore, a cheaper on-off valve can be selected. , manufacturing costs can be reduced.

In Fig. 17, the injection pipe 91 is connected to the injection cylinder 131 of the reaction vessel 1, but it may be connected to the upper part of the vessel body 11. Additionally, a pump that feeds liquid waste from the tank 92 toward the reaction vessel 1 may be provided in the midway portion of the input pipe 91.

Although the embodiments have been described above, the present invention is not limited to the above-described embodiments and can be embodied in various aspects. The configuration of each part is not limited to the illustrated embodiment, and various changes are possible without departing from the spirit of the present invention. For example, the respective configurations described in the above-described embodiments and modifications (and additional descriptions, etc.) may be combined, and additions, omissions, substitutions, and other changes to the configurations are possible.

For example, the bearing 212 that supports the rotating shaft 21 so that it can rotate freely may be supported by forming a bearing support frame on the stand 4. In this case, the support rigidity of the bearing 212 may be increased by increasing the size of the girder member formed by standing the bearing support frame on the stand 4. In addition, a load cell is interposed between the bearing support frame and the girder member, and the processed material introduced into the container inner space 111 is controlled by the load cell and the load cell 62 below the support leg 20 of the container body 11. It may be configured so that weight can be measured. In this case, a plate-shaped member covering these load cells is interposed between the bearing support frame and the load cells below it, and between the support legs 20 and the load cells 62, and the load of the reaction vessel 1 is applied. It may be dispersed and distributed to these load cells.

Additionally, two organic waste treatment devices 100 may be placed on the left and right sides, and the steam header 81 may be shared by these organic waste treatment devices 100. Additionally, the steam discharge pipe 15 may be connected to the input cylinder 131. In addition, at least one of the safety valve connection pipe 16, the air discharge pipe 17, the pressure gauge connection pipe 18, and the thermometer connection pipe 19 may be connected to the container body 11.

This specification includes the configuration of the following embodiments.

12, 13, etc., the organic waste treatment apparatus of the embodiment includes a reaction vessel 1 that accommodates the treated material and has an outlet 148 at the bottom, and supports the reaction vessel 1. It is equipped with a trestle (4). The stand 4 is horizontally positioned between four struts 40 formed at the corners of a rectangle when viewed in plan from the device installation surface, and props 40 arranged in a first direction along one side of the rectangle. A pair of first girder members 41 erected, and 1 horizontally installed with a gap between the middle portions of the first girder members 41 extending in a second direction orthogonal to the first direction. A pair of second girder members (42) and a pair of third girder members (43) extending in the first direction and arranged horizontally with a space between the middle portions of the second girder members (42). and a fifth cross-beam member 45 formed at each of the four corners of the square surrounded by the second cross-beam member 42 and the third cross-beam member 43. The fifth girder member 45 forms an angle brace member. The support 40 and the girder members 41, 42, 43, and 45 are made of steel. The reaction vessel (1) has a second girder member (42) positioned at the intersection of the second girder member (42) and the third girder member (43), with an outlet (148) positioned within the above-mentioned rectangular frame when viewed in plan. ) and is mounted on the third girder member 43 and the fifth girder member 45.

According to the organic waste treatment apparatus of the present embodiment, the load of the reaction vessel 1 is received by the support 40 and the first to third girder members 41 to 43 made of steel, and the load of the reaction vessel 1 is received by the support 40 and the first to third beam members 41 to 43. Since the fifth beam member 45 (angle brace member) is formed at the mounting point, the support rigidity of the reaction vessel 1 can be improved. As a result, the sizes of the other girder members (for example, the fourth girder member 44 shown in FIGS. 1 to 13, the sixth to ninth girder members 46 to 49, etc.) constituting the pedestal 4 are comparatively similar. Even if it is made small, the strength to support the reaction vessel 1 can be secured, and the weight and manufacturing cost of the stand 4 can be reduced.

7 to 10, etc., the fifth girder member 45 (angle brace member) is formed of steel with a smaller cross-sectional area than the first to third girder members 41 to 43.

According to this embodiment, the weight and manufacturing cost of the stand can be further reduced by making the cross-sectional area of the fifth girder member 45 (angle brace member) relatively small.

7 to 12, etc., in the stand 4, at the intersection of the second cross-beam member 42 and the third cross-beam member 43, there are second cross-beam members 42 and third cross-beam members 43. ) and a metal container stand 61 disposed on the fifth beam member 45 is fixed. Then, the reaction vessel 1 is placed on the vessel holder 61.

According to this embodiment, the reaction vessel mounting portion of the stand 4 can be made more sturdy, so the reaction vessel 1 can be supported reliably and safety can be improved.

As shown in FIGS. 1 to 4, 6, etc., the stand 4 is provided with a pair of fourth beam members 44 arranged horizontally between the struts arranged in the second direction. The fourth girder member 44 is formed to extend in the second direction. On three of the four outer circumferential sides surrounded by the prop (40) and the first and fourth girder members (41, 44), the lower part of the strut (40) and the first or fourth girder member (41 or 44) A brace 50 connecting the middle portion is formed.

According to this embodiment, the rigidity and strength of the stand 4 can be improved by installing the brace 50, and by not installing the brace 50 on one of the four outer peripheral sides. , workers can easily enter and exit the stand (4), improving workability.

7 to 13, etc., the reaction vessel 1 is supported on a stand 4 via a load cell 62.

According to this embodiment, since the weight of the processed material contained in the reaction vessel 1 can be measured, the processing time or processing temperature can be adjusted according to the weight of the processed material or the moisture content measured in advance, or by adding moisture, etc. Efficiency can be improved.

In addition, as shown in FIG. 15, between the reaction vessel 1 and the load cell 62, a frame-shaped metal plate member 68 (frame-shaped metal member) surrounding the outlet 148 when viewed from the top is interposed. You can leave it as is.

According to this embodiment, since the frame-like metal plate member 68 distributes the load of the reaction vessel 1, it is possible to prevent the load from being concentrated on one load cell 62, thereby reducing the load on the reaction vessel 1. ) It is possible to improve the measurement precision of the weight of the processed material received. In addition, the heat transmitted from the reaction vessel 1 to the load cell 62 during processing can be dissipated by the frame-shaped metal plate member 68, and damage to the load cell 62 due to heat can be prevented. .

5, 7 to 10, 13, 14, etc., the organic waste treatment apparatus of the embodiment has an inlet 112 at the upper part and an outlet 148 at the lower part to receive the treated material. A reaction vessel (1) is provided. The reaction container 1 includes an input container 131 with upper and lower openings connected upward to an input port 112 opened at the top of the container body 11, and an input container 131 whose upper end is sealably closed. It is provided with a side opening/closing cover (132). A steam injection pipe 12 for injecting saturated water vapor into the container internal space 111 is connected to the upper part of the container body 11. On the other hand, a steam discharge pipe 15, a safety valve connection pipe 16, and an air discharge pipe 17 are connected to the side of the input cylinder 131.

According to the organic waste treatment apparatus of this embodiment, the vapor injection system piping and the discharge system piping within the reaction vessel 1 can be arranged by distributing them up and down, so that the injection system piping and the discharge system piping cannot be mistaken during maintenance. Maintainability can be improved by reducing the chance of recognition.

As shown in FIGS. 5, 9, 10, 14, etc., the organic waste treatment device of the embodiment has a steam inlet pipe 12, a steam discharge pipe 15, a safety valve connection pipe 16, and an air discharge pipe 17. The extending pipe has a pipe portion (7) extending in the same direction from a position near the reaction vessel (1).

According to this embodiment, the maintainability is good because the piping system can be arranged and formed all at once.

9, 10, 14, etc., the organic waste treatment apparatus of the embodiment is provided with a stand 4 that supports the reaction vessel 1. The stand 4 includes a first floor plate 63 (first floor portion) formed at a height position below the reaction vessel 1, and a second floor plate formed at a height position above the reaction vessel 1 ( 66) (second floor section) is provided. The pipe constituting the pipe section 7 extends along the second floor plate 66 (second floor).

According to this embodiment, each piping can be accessed from both the first floor portion and the second floor portion, so that maintenance performance can be improved.

8 to 10, 14, etc., the organic waste treatment apparatus of the embodiment is provided with a stirring device 2 for stirring the treated material in the reaction vessel 1. The driving source (prime mover 22 and power transmission mechanism 23) of the stirring device 2 is installed on the first floor plate 63 (first floor portion) below the piping portion 7.

According to this embodiment, since the empty space of the first floor part below the piping part 7 can be utilized effectively, an organic waste disposal apparatus can be formed compactly.

Additionally, each configuration of the above embodiments may be combined, and additions, omissions, substitutions, and other changes to the configuration may be possible.

1: reaction vessel,
2: stirring device,
4: trestle,
7: Plumbing Department,
11: container body,
11a: inner wall of container,
100: organic waste treatment device,
111: space inside the container,
114: discharge side opening,
141: opening/closing cover,
141a: upper surface of cover,
142: cover body,
142a: main body upper part,
142b: If you give it to me,
142c: main body protrusion,
142d: gasket,
143: cover convex portion,
143a: upper surface of convex portion,
143b: outer peripheral surface,
144: cover body,
145: Linche,
145a: main body side protrusion,
145b: cover side protrusion,
146: Flange shape portion,
146a: cover body protrusion,
148: outlet

Claims (8)

a reaction vessel containing the treated material;
an opening and closing cover that opens and closes a discharge side opening formed at the bottom of the reaction vessel;
Equipped with a stirring device for stirring the treated material in the reaction vessel,
The opening/closing cover closes the discharge side opening in a closed state, and the upper surface of the cover exposed to the inner space of the reaction vessel is formed close to the inner wall of the reaction vessel. According to claim 1,
The inner wall surface of the container around the discharge side opening is curved concavely,
The upper surface of the cover is curved concavely along the inner wall of the container. According to claim 1,
The inner wall surface of the container around the discharge side opening has a substantially concave spherical shape,
The organic waste disposal device wherein the upper surface of the cover is curved approximately into a concave spherical shape. The method according to any one of claims 1 to 3,
The opening/closing cover includes a normal cover body mounted on the discharge-side opening, and a cover body having a cover convex portion fitted into the cover body,
The inner peripheral surface of the cover body is formed in a tapered shape with a narrow inner space side of the container,
The organic waste disposal device wherein the outer peripheral surface of the cover convex portion is formed in a tapered shape along the inner peripheral surface of the cover main body. According to claim 1,
A suction mechanism for depressurizing the internal space of the reaction vessel is connected to the discharge pipe connected to the reaction vessel,
The internal space of the reaction vessel containing the treated material is brought to a subcritical state by saturated water vapor, the treated material is hydrolyzed while being stirred by the stirring device, and then, before opening the opening/closing cover, the suction mechanism is used to An organic waste disposal device configured to suck vapor in the internal space and bring the internal space closer to external air pressure. According to claim 1,
Equipped with a stand to support the reaction vessel,
The organic waste treatment device wherein the reaction vessel is supported on the stand via a load cell. According to claim 6,
An organic waste treatment device in which a frame-shaped metal member surrounding an outlet is interposed between the reaction vessel and the load cell when viewed from the top. According to claim 1,
An organic waste treatment device in which an input pipe for introducing liquid waste is connected to the reaction vessel.

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