CN117279867A - Organic waste treatment device - Google Patents

Abstract

The purpose of the present invention is to reduce untreated treated material in an organic waste treatment device. The organic waste treatment device comprises: a reaction vessel 1 for accommodating a treatment object; an opening/closing cover 141 for opening/closing the discharge-side opening 114 provided in the bottom of the reaction vessel 1; and a stirring device for stirring the treated material in the reaction vessel 1. The opening/closing lid 141 closes the discharge-side opening 114 in a closed state, and is provided so that a lid upper surface portion 141a exposed to the container internal space 111 of the reaction container 1 approaches the container internal wall surface 11a of the reaction container 1.

Description

Organic waste treatment device

Technical Field

The present invention relates to an organic waste treatment apparatus.

Background

In recent years, as a treatment technique for organic waste, attention has been paid to a device for treating waste by hydrolyzing the waste in a subcritical state using high-temperature and high-pressure saturated steam, instead of a conventional incineration treatment using an incinerator or a treatment buried under the ground (for example, refer to patent document 1).

In such an organic waste treatment apparatus, after the treated material is put into a sealable reaction vessel, the reaction vessel is brought into a subcritical state, and the treated material is hydrolyzed while being stirred. The treated product was taken out through a discharge-side opening provided in the bottom of the reaction vessel.

In the conventional organic waste treatment apparatus, an opening/closing valve for opening/closing a discharge port connected to the opening is provided in a discharge-side opening. However, there is a problem in that a space where the processed product cannot be stirred is generated between the valve body of the on-off valve and the internal space of the reaction vessel, and a part of the processed product remains in the space where the processed product cannot be stirred, so that the processed product is not completely mixed.

Patent document 1: japanese patent laid-open No. 2008-055285.

Disclosure of Invention

The present invention has been made to improve the above-described situation, and an object of the present invention is to reduce untreated treated materials in an organic waste treatment apparatus.

An organic waste treatment device of the present invention comprises: a reaction vessel for accommodating a treatment object; an opening/closing lid for opening/closing a discharge-side opening provided in the bottom of the reaction vessel; and a stirring device for stirring the processed product in the reaction vessel, wherein the opening/closing cover is provided so as to close the discharge-side opening in a closed state and so that a cover upper surface portion exposed to a vessel internal space of the reaction vessel is close to a vessel internal wall surface of the reaction vessel.

Preferably, the container inner wall surface around the discharge-side opening is curved in a concave shape, and the cap upper surface is curved in a concave shape along the container inner wall surface.

Preferably, the inner wall surface of the container around the discharge-side opening is substantially concave spherical; the cover upper surface portion is curved in a substantially concave spherical shape.

Preferably, the opening/closing cover includes: a cap body which is attached to the discharge-side opening and has a cylindrical shape; and a lid body having a lid convex portion fitted into the lid body, wherein an inner peripheral surface of the lid body is formed in a narrow tapered shape on the container inner space side, and an outer peripheral surface of the lid convex portion is formed in a tapered shape along the inner peripheral surface of the lid body.

Preferably, a suction mechanism for depressurizing an internal space of the reaction vessel is connected to a discharge pipe of the reaction vessel, and the organic waste treatment device is configured to bring an interior of the reaction vessel containing a treatment product into a subcritical state by saturated steam, hydrolyze the treatment product while stirring the treatment product by the stirring device, and then suck steam in the internal space by the suction mechanism before opening the opening/closing cover, thereby bringing the internal space close to an external air pressure.

Preferably, the reaction vessel is supported by a stage for supporting the reaction vessel, and the reaction vessel is supported by the stage via a load cell.

Preferably, a frame-shaped metal member surrounding the discharge port in a plan view is provided between the reaction vessel and the load cell.

Preferably, the reaction vessel is connected to a pipe for feeding liquid waste.

The invention provides an organic waste treatment device capable of reducing untreated treated objects.

Drawings

Fig. 1 is a schematic front view showing one embodiment of an organic waste treatment apparatus.

Fig. 2 is a schematic rear view showing this embodiment.

Fig. 3 is a schematic right view showing this embodiment.

Fig. 4 is a schematic left view showing this embodiment.

Fig. 5 is a schematic plan view showing this embodiment.

Fig. 6 is a schematic bottom view showing this embodiment.

Fig. 7 is a schematic front view showing an enlarged scale of the reaction vessel according to this embodiment.

Fig. 8 is a schematic rear view showing an enlarged scale of the reaction vessel according to this embodiment.

Fig. 9 is a schematic right-side view showing an enlarged scale of the reaction vessel according to this embodiment.

Fig. 10 is a schematic left view showing an enlarged scale of the reaction vessel according to this embodiment.

FIG. 11 is an enlarged front sectional view showing the lower part of the reaction vessel and the stage.

Fig. 12 is a perspective view showing a lower portion of the container body in cross section.

FIG. 13 is an exploded rear perspective view for explaining a mounting structure of a reaction vessel on a stage.

Fig. 14 is a rear perspective view showing the piping section together with the upper portion of the stand.

FIG. 15 is an exploded rear perspective view for explaining a mounting structure of a reaction vessel with respect to a rack in another embodiment.

Fig. 16 is an enlarged front view showing a lower portion of the container body according to this embodiment.

Fig. 17 is a schematic side view showing an upper part of a container according to another embodiment.

Detailed Description

Embodiments of the organic waste treatment apparatus according to the present invention will be described below with reference to the drawings. In the following description, for determining the direction, terms such as "front and rear", "left and right" are used, the direction in which the rotation axis of the stirring device extends is defined as the left and right direction, and the direction orthogonal to the left and right direction and the vertical direction is defined as the front and rear direction. These statements are used for convenience of description and do not limit the technical scope of the present invention.

Overall outline structure

Fig. 1 to 6 are schematic front, rear, right, left, top, and bottom views showing an embodiment of an organic waste treatment apparatus. Fig. 7 to 10 are front, rear, right and left views of the reaction vessel 1, which are enlarged and show the rack in cross section.

The organic waste treatment apparatus 100 includes: a reaction vessel 1 for accommodating a treatment object; a discharge-side opening/closing cover 141 for opening/closing a discharge-side opening 114 provided in the bottom of the container body 11 of the reaction container 1; and a stirring device 2 for stirring the treated material in the reaction vessel 1. After the organic waste treatment apparatus 100 has put the treated matter such as organic waste into the sealable reaction vessel 1, the inside of the reaction vessel 1 is brought into a subcritical state by high-temperature and high-pressure saturated steam extracted from the steam suction pipe 12, and the treated matter is hydrolyzed while being stirred by the stirring apparatus 2. The treated product is taken out from a discharge-side opening 114 provided in the bottom of the reaction vessel 1.

The vessel body 11 of the reaction vessel 1 is made of, for example, stainless steel, and is formed into a substantially spherical shape, and can accommodate the processed product. The container internal space 111 (see fig. 11 and 12) of the container body 11 is substantially spherical. The reaction vessel 1 is made of a metal such as stainless steel, and has a pressure resistance of about 5MPa (megapascal), for example. The reaction vessel 1 is mounted on a stand 4.

An input unit 13 capable of inputting a processing object into the container internal space 111 is provided at an upper portion of the container main body 11. The input unit 13 includes: a vertically opened inlet tube 131 connected to a circular inlet 112 opened in an upper portion of the container body 11; and an input-side opening/closing cover 132 closing the upper end of the input cylinder 131 in a sealing manner.

A discharge portion 14 capable of taking out the processed product from the container internal space 111 is provided at the bottom of the container main body 11. The discharge portion 14 has a discharge-side opening/closing cover 141 that closes the circular discharge-side opening 114 formed in the bottom opening of the container body 11 in a sealable manner. The discharge-side opening 114 is formed at the bottom top of the container body 11, whereby the processed product can be discharged by gravity from a discharge port 148 (see fig. 11 and 12) provided in the discharge-side opening 114.

A steam suction pipe 12 for sucking high-temperature and high-pressure saturated steam into the container inner space 111 is connected to the upper portion of the container body 11. A steam discharge pipe 15, a safety valve connection pipe 16, an air discharge pipe 17, a pressure gauge connection pipe 18, and a temperature gauge connection pipe 19 are connected to the side surface of the inlet tube 131 of the reaction vessel 1. The pipes 12, 15, 16, and 17 are connected to pipes provided in the piping section 7. A pressure gauge (not shown) for measuring the pressure in the container internal space 111 is connected to the pressure gauge connection pipe 18. A thermometer (not shown) for measuring the temperature of the container internal space 111 is connected to the thermometer connecting pipe 19.

The stirring device 2 includes: a rotation shaft 21 horizontally inserted through the container body 11; a prime mover 22 for rotating the rotation shaft 21; and a power transmission mechanism 23 that transmits power of the prime mover 22 to the rotating shaft 21. The stirring blade 25 is mounted on the left rotary shaft 21 via an arm 24. The stirring device 2 rotates the stirring blade 25 around the rotation shaft 21 in the container internal space 111 to stir the treatment object stored in the container internal space 111.

Structure of discharge part and opening and closing cover

FIG. 11 is an enlarged front sectional view showing the lower part of the reaction vessel 1 and the stage 4. Fig. 12 is a perspective view of the lower part of the container body 11, viewed from the rear obliquely left, in cross section. The configuration of the discharge unit 14 will be described below with reference to fig. 11 and 12.

As described above, the reaction vessel 1 is provided with the opening/closing cover 141, and the opening/closing cover 141 is used to open and close the discharge-side opening 114 provided in the bottom of the vessel main body 11. The opening/closing cover 141 is a so-called clutch sealing cover, and includes: a substantially cylindrical cap body 142 attached to the discharge-side opening 114; a cover 144 having a cover protrusion 143 fitted into the cover body 142; and a ring 145 connecting the cover body 142 and the cover 144. The cover body 142, the cover 144, and the ring 145 are made of metal.

The lid body 142 is substantially cylindrical, and is fixed to the container body 11 by welding or the like so as to protrude outward of the container body 11. The upper end of the cap body 142 fits into the discharge-side opening 114. The inner peripheral surface 142b of the lid body 142 is formed in a tapered shape in which the container internal space 111 side thereof is narrow. The opening portion of the cap body 142 communicates the inside and outside of the container body 11 to form the discharge port 148.

The cover 144 has a cover convex portion 143 having a substantially truncated cone shape fitted into the cover body 142, and a flange portion 146 having a substantially disc shape and a larger diameter than the cover convex portion 143. The outer peripheral surface 143b of the cap protruding portion 143 is formed in a tapered shape along the inner peripheral surface 142b of the cap body 142.

The ring 145 is substantially circular and simple in shape with an inner diameter larger than the outer shapes of the cap body 142 and the cap body 144. The ring body 145 has a plurality of main body side protrusions 145a protruding inward from an upper end portion of an inner peripheral surface thereof and a plurality of cover side protrusions 145b protruding inward from a lower end portion of the inner peripheral surface thereof.

In a state where the opening/closing cover 141 is closed, the plurality of body protrusions 142c protruding outward from the lower end portion of the outer peripheral surface of the cover body 142 and the plurality of cover body protrusions 146a protruding from the outer peripheral surface of the flange-like portion 146 of the cover body 144 are sandwiched by the protrusions 145a, 145b of the ring body 145. Accordingly, the lower surface of the lid body 142 is brought into close contact with the upper surface of the flange-like portion 146 of the lid body 144, and the seal gasket 142d such as an O-ring provided on the lower surface of the lid body 142 is crushed, whereby the discharge-side opening 114 to which the opening/closing lid 141 is attached is sealed.

When the opening/closing cover 141 is opened, the ring 145 is rotated so that the cover-side protrusions 145b are positioned between adjacent cover protrusions 146a of the cover 144. This allows the cover 144 to be pulled out of the ring 145.

As shown in fig. 11, the lid 144 is coupled to the lower outer peripheral surface of the container body 11 by a hinge member 147 having a substantially horizontal rotation shaft 147 a. Since the outer peripheral surface 143b of the lid protruding portion 143 is formed in a tapered shape in which the container internal space 111 is narrow, the lid body 142 can be fitted by rotating about the rotation shaft 147a of the hinge member 147. Therefore, the opening/closing mechanism of the cover 144 can be formed with a simple structure such as the hinge member 147, and the manufacturing cost of the opening/closing cover 141 can be reduced. The opening and closing mechanism of the lid 144 is not limited to the hinge member, and may be configured such that the lid convex portion 143 is pulled out straight along the central axes of the lid main body 142 and the ring body 145, and then moved to the outside of the lower position of the discharge port 148. At this time, the inner peripheral surface 142b of the cap body 142 and the outer peripheral surface 143b of the outer peripheral surface 143 of the cap protrusion 143 may be parallel to the central axis of the cap body 142 instead of tapered.

As shown in fig. 11 and 12, in a state where 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 is exposed to the container internal space 111. The cover upper surface portion 141a is formed by a body upper surface portion 142a of the cover body 142 and a convex portion upper surface portion 143a of the cover convex portion 143.

In a state where the opening/closing cover 141 is closed, the cover upper surface portion 141a is disposed close to the discharge-side opening 114. This eliminates a space left by the processed object when the processed object is stirred by the stirring device 2 around the discharge-side opening 114, and reduces unprocessed processed objects. In the present embodiment, there is no difference in height between the outer peripheral edge portion of the cap upper surface portion 141a (here, the upper end portion of the cap main body 142) and the opening upper end portion of the discharge-side opening portion 114. In addition, in the cover upper surface portion 141a, there is no difference in height between the inner peripheral edge portion of the cover upper surface portion 141a and the outer peripheral edge portion of the convex portion upper surface portion 143 a. This can reliably eliminate the space left by the processed product when the processed product is stirred.

The cover upper surface portion 141a is curved in a substantially concave spherical shape along the substantially concave spherical container inner wall surface 11a around the discharge-side opening 114. Accordingly, even when the stirring device 2 is driven and the stirring blade 25 on the lid surface 141a is brought close to the container inner wall surface 11a of the container main body 11 to rotate, contact between the stirring blade 25 and the lid surface 141a can be prevented, and stirring efficiency can be improved. The lid upper surface portion 141a may be located above (on the center side of the container body 11) the spherical surface shape of the container inner wall surface 11a to such an extent that the rotation of the stirring blade 25 is not hindered. For example, the cover upper surface portion 141a may be formed along a spherical surface shape having a larger diameter than the spherical surface shape of the container inner wall surface 11 a.

The lid surface portion 141a may be positioned on the lower side (on the side away from the center of the container body 11) with respect to the spherical shape of the container inner wall surface 11a so as not to leave a processed product when the processed product is stirred. For example, the lid upper surface portion 141a may be formed in a spherical shape having a smaller diameter than the spherical shape of the container inner wall surface 11a so as to be positioned on the lower side than the spherical shape of the container inner wall surface 11 a. The outer peripheral edge of the lid top surface 141a may be located below the upper opening end of the discharge-side opening 114, and a level difference may be formed between the lid top surface 141a and the container inner wall surface 11a, which is not so large that the processed product remains when the processed product is stirred. This height difference can be used, for example, as a weld. The container body 11 and the lid body 142 may be integrally formed.

In addition, the following structure may be adopted: the upper end surface of the cap body 142 having the same inner diameter as the opening diameter of the discharge-side opening 114 is disposed so as to face the outer wall of the container body 11 around the discharge-side opening 114, so that the convex upper surface 143a of the cap body 144 closes the entire opening of the discharge-side opening 114. At this time, the discharge-side opening 114 constitutes a discharge port, and the cover upper surface portion 141a is constituted only by the convex portion upper surface portion 143 a.

The shape of the cover upper surface portion 141a may be a concave shape which does not contact the stirring blade 25, or may not be a substantially concave spherical shape. For example, in the case where the container body 11 is laterally cylindrical, the lid upper surface portion 141a of the opening/closing lid 141 can be curved in a concave shape along the container inner wall surface of the container body 11.

Structure of stand

Fig. 13 is a rear perspective view for explaining a mounting structure of the reaction vessel 1 on the rack 4. Fig. 14 is a rear perspective view showing the piping section 7 together with the upper portion of the stand 4. The gantry 4 will be described with reference to fig. 12 and 13.

The stand 4 has 4 struts 40 erected on the device installation surface F. The 4 struts 40 are each formed of H-shaped steel having a strong axis aligned with the left-right direction, and are arranged at the corners of a rectangle extending in the front-rear-left-right direction. First beam members 41 extending in the left-right direction are laterally erected between the intermediate portions of the struts 40 arranged left and right. A pair of right and left second beam members 42 extending in the front-rear direction are laterally supported at left-right intervals between the intermediate portions of the front-rear first beam members 41. A pair of front and rear third beam members 43 extending in the left-right direction are laterally supported with a gap therebetween in the front-rear direction at intermediate portions of the left-right second beam members 42. The beam members 41, 42, 43 are formed of H-steel having the same dimensions (cross-sectional areas) as the struts 40.

Fourth beam members 44 extending in the front-rear direction are laterally erected between the intermediate portions of the struts 40 arranged front-rear. The fourth beam member 44 is formed of H-section steel having a smaller size than the strut 40. The support 50 for connecting the lower portion of the stay 40 to the middle portion of the first beam member 41 or the fourth beam member 44 is provided on both right and left side surfaces and the back surface of the stand 4. The support 50 is formed of L-shaped angle steel. The front surface of the stand 4 is not provided with a support, and an operator working on the device installation surface F can easily enter and exit the stand 4 from the front surface.

Fifth beam members 45 forming diagonal braces are provided at four corners of the quadrangle surrounded by the second beam member 42 and the third beam member 43, respectively. A front-rear pair of sixth beam members 46 are transversely stretched between the second beam member 42 and the fourth beam member 44 at intervals in the front-rear direction on the left-right extension line of the third beam member 43, and the sixth beam members 46 extend in the left-right direction. Seventh beam members 47 extending in the front-rear direction are respectively provided between the front first beam member 41 and the third beam member 43, between the rear first beam member 41 and the third beam member 43, and between the rear first beam member 41 and the sixth beam member 46. The beam members 45, 46, 47 are formed of H-section steel having a smaller size than the fourth beam member 44.

An eighth beam member 48 extending in the front-rear direction is laterally erected between the front-rear sixth beam members 46. The eighth beam member 48 is formed of C-section steel (channel section steel) smaller in size than the beam members 45, 46, 47. A ninth beam member 49 extending in the left-right direction is laterally interposed between the rear three seventh beam members 47 and the beam members 42, 44. The ninth beam member 49 is also transversely erected between the first beam member 41 and the sixth beam member 46 on the front side. The ninth beam member 49 is formed of L-shaped steel having a smaller size than the eighth beam member 48.

The reaction vessel 1 is placed at the intersection of the second beam member 42 and the third beam member 43. The reaction vessel 1 has 4 support legs 20 made of metal and provided at equal intervals in the circumferential direction at the lower portion of the outer peripheral surface of the vessel main body 11. A metal plate-like container mount 61 disposed across the second beam member 42, the third beam member 43, and the fifth beam member 45 is fixed to an intersection of the second beam member 42 and the third beam member 43. The support legs 20 of the reaction vessel 1 are placed on a vessel mounting table 61 via load cells 62.

As described above, the stand 4 receives the weight of the reaction vessel 1 by the column 40 and the beam members 41, 42, 43 formed of steel having a relatively large size. Further, the fifth beam member 45 constituting a diagonal brace is provided at the placement portion of the reaction vessel 1, and the reaction vessel 1 can be placed on the vessel placement table 61 fixed across the beam members 42, 45. Thus, even if the dimensions of the other beam members 44, 46 to 49 are made relatively small, the strength of supporting the reaction vessel 1 can be ensured, and the weight and manufacturing cost of the stand 4 can be reduced.

The organic waste treatment apparatus 100 according to the present embodiment includes a load cell 62 between the support leg 20 of the reaction container 1 and the container mounting table 61 of the rack 4. The load cell 62 may be used to measure the weight of the treatment object contained in the reaction vessel 1. If the weight of the treated material stored in the reaction vessel 1 is known before the start of the treatment, for example, water is added to the reaction vessel 1 before the start of the treatment to form an appropriate water content or the like in accordance with the water content of the treated material, so that the treatment efficiency is improved.

The 4 support legs 20 of the reaction vessel 1 are placed on the load cells 62, respectively, but as shown in fig. 15 and 16, 1 frame-shaped metal plate member 68 surrounding the discharge portion 14 may be provided between the 4 support legs 20 and the load cells 62. According to this configuration, since the frame-shaped metal plate member 68 disperses the weight of the reaction vessel 1, the weight can be prevented from concentrating on one load cell 62, and the accuracy of measuring the weight of the processed product stored in the reaction vessel 1 can be improved. In addition, the heat transferred from the support legs 20 of the reaction vessel 1 to the load cells 62 during the treatment can be emitted through the frame-shaped metal plate member 68, and damage to the load cells 62 due to heat can be prevented.

The shape of the frame-shaped metal plate member 68 is not limited to a four-modified frame shape, and any frame shape may be used as long as the discharge port 148 can be positioned in the frame and can be disposed so as to extend over each load cell 62. For example, the frame-like metal plate member 68 may be annular (ring-like).

In addition, by interposing the load cell 62 between the reaction vessel 1 and the vessel mounting table 61, the intervals between the vessel main body 11 and the beam members 42, 43, 45 become large. This facilitates the flow of air around the reaction vessel 1 during processing, improves the cooling performance of the lower part of the vessel main body 11 and the load cell 62, and prevents damage to the load cell 62 due to heat.

The description of the stand 4 will be continued. The first metal floor plate 63 is laid on the beam members 41 to 49 except for the placement portion of the reaction vessel 1. A plurality of first safety barriers 64 are provided upright on the first and fourth beam members 41 and 44 along the first or fourth beam member 41 or 44.

First upper beam members 51 extending in the front-rear direction or the left-right direction are provided between the upper end portions of the adjacent struts 40. The first upper beam member 51 is formed of H-steel having the same dimensions as the fourth beam member 44. An upper end plate 65 made of metal is joined to the upper end of the stay 40.

4 second upper beam members 52 extending in the front-rear direction are laterally erected between the front-rear first upper beam members 51. The 4 second upper beam members 52 are provided at intervals in the left-right direction, and the input portion 13 of the reaction vessel 1 is disposed between the two second upper beam members 52 near the center in the left-right direction. The second upper beam member 52 is formed of C-section steel smaller in size than the seventh beam member 47 and larger than the eighth beam member 48.

A plurality of third upper beam members 53 are provided between the first upper beam member 51 and the second upper beam member 52 and between the adjacent second upper beam members 52, and are laterally erected at intervals in the front-rear direction. A second metal floor board 66 is laid on the upper beam members 51 to 53. A plurality of second safety rails 67 are erected on the upper beam members 51, 52 along the upper beam members 51 or 52.

Two third upper beam members 53, which sandwich the input portion 13 of the reaction vessel 1 in the front-rear direction, are provided between two second upper beam members 52 near the left-right center of the 4 second upper beam members 52. The rear of the input portion 13 is an arrangement region of the piping portion 7. The second floor board 66 is laid around the input portion 13, and the second floor board 66 is not laid in the area where the piping portion 7 is disposed.

The upper beam members 52 and 53 are provided at positions higher than the steam intake pipe 12 of the reaction vessel 1 and lower than the steam discharge pipe 15, the safety valve connection pipe 16, the air discharge pipe 17, the manometer connection pipe 18, and the thermometer connection pipe 19. The steam suction pipe 12 is accessible from the second layer of the stand 4 (on the first flooring material 63) and the pipes 16 to 19 are accessible from the third layer (on the second flooring material 66). The organic waste treatment apparatus 100 is provided with a steam extraction system and a discharge system of a piping section 7, which are vertically separated.

The opening/closing lid 132 of the input portion 13 of the reaction vessel 1 is accessible from the third layer (on the second floor plate 66), and the opening/closing lid 141 of the discharge portion 14 is accessible from the first layer (the apparatus installation surface F).

Structure of piping part

Next, the structure of the piping section 7 will be described with reference to fig. 1 to 10 and 14. As shown in fig. 9 and the like, the steam suction pipe portion 71 connected to the steam suction pipe 12 is disposed so as to extend in the front-rear direction from the steam suction pipe 12 toward the rear. The pipe end of the steam suction 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 stores steam supplied from a furnace (not shown).

A suction side on-off valve 711, a suction flow rate adjustment valve 712, a suction side separator 713, and a steam check valve 714 are provided in this order from the rear side in the middle of the steam suction pipe portion 71. Although the drawing of the opening/closing operation mechanism of the suction-side opening/closing valve 711 and the suction flow rate adjustment valve 712 is omitted, the valves 711 and 712 may be automatically controlled or manually controlled. The suction side separator 713 serves to remove water droplets contained in the steam. The removed water droplets are discharged from the lower portion of the suction side separator 713 toward the rear via a steam water droplet discharge pipe 715 extending in the front-rear direction. A check valve 716 is provided at the middle portion of the steam drip drain 715.

Air outlet pipe portion 72 connected to air outlet pipe 17 is disposed so as to extend in the front-rear direction from air outlet pipe 17 toward the rear. A suction side filter 721, a steam trap 722, and the like are provided in this order from the air outlet duct 17 side in the middle portion of the air outlet piping portion 72. When steam is sucked into container interior 111 from steam suction pipe 12, air discharge pipe portion 72 removes and discharges the visible components and water droplets contained in the gas discharged from air discharge pipe 17 by suction side filter 721 and steam trap 722. The water droplets removed by vapor trap 722 are discharged via air outlet duct 723 extending in the front-rear direction from the lower portion of vapor trap 722 toward the rear.

The relief valve piping portion 73 connected to the relief valve connection pipe 16 is provided so as to extend in the front-rear direction from the relief valve connection pipe 16 to the rear. The relief valve piping section 73 has a relief valve 731 in its middle portion, and when the container internal space 111 rises above a set pressure during processing, the relief valve 731 operates to release steam from the container internal space 111 and decompress the steam.

As shown in fig. 10, the steam discharge pipe 15 is provided on the left side surface of the inlet tube 131 in the upper part of the reaction vessel 1. The steam discharge pipe portion 74 connected to the steam discharge pipe 15 extends leftward, then extends rearward in the left direction of the input cylinder 131 via the downward-facing U-shaped physical object catcher 741, and is further guided rearward of the input cylinder 131 toward the right. Further, the steam discharge pipe 74 is disposed to extend in the front-rear direction from a position near the inlet tube 131.

The downward facing U-shaped tangible catcher 741 is capable of removing larger tangible objects from the exiting steam and is accessible from the second layer of the stand 4 (on the first flooring material 63). The tangible matter or the like remaining in the tangible matter trap 741 can be removed by detaching a blind flange provided at the bottom of the tangible matter trap 741. Blind flanges may be provided at both left and right sides of the bottom of the tangible catcher 741. In this way, when removing the remaining material or the like in the material catcher 741, both the left and right blind flanges are removed, and the tool is inserted into the material catcher 741 from one opening and the material or the like is extruded from the other opening, thereby improving maintainability. The physical catcher 741 may be disposed behind the input cylinder 131.

The steam discharge pipe portion 74 branches off from the rear of the input tube 131 into a main discharge pipe portion 742 and an emergency discharge pipe portion 747. Both the main drain pipe portion 742 and the emergency drain pipe portion 747 are disposed so as to extend in the front-rear direction. The vacuum pump (suction means) may be connected to the steam discharge pipe portion 74, and the vacuum pump may be used to decompress the container internal space 111 after the treatment object is put into and before the steam is sucked, thereby improving the suction efficiency. The steam may be discharged by opening a discharge-side on-off valve 744 to be described later after the treatment, and the steam in the container internal space 111 may be sucked by a vacuum pump to approach the external air pressure at a time point when the pressure in the container internal space 111 is substantially equal to the external air pressure (for example, at a time point when the external air pressure is +0.02 MPa). This can minimize steam outflow noise, hot air, and odor generated when the opening/closing cover 132 is opened at the end of the treatment. The vacuum pump may be either an automatic control or a manual control.

The main drain portion 742 includes a drain-side filter 743, a drain-side on-off valve 744, and a drain flow rate adjustment valve 745 in this order from the upstream side of the flow of exhaust gas. The discharge-side filter 743 removes relatively small physical substances contained in the discharged steam. Although the opening and closing operation mechanisms of the discharge-side opening and closing valve 744 and the discharge flow rate adjustment valve 745 are not shown, the valves 744 and 745 may be automatically controlled or may be manually controlled. A condenser 746 for converting steam into liquid is connected to the downstream side of the exhaust flow of the main exhaust pipe portion 742. The condenser 746 is provided at the rear of the stand 4 in the up-down longitudinal direction, and can be accessed from the second floor (the first floor board 63).

A manual on-off valve 748 is provided in the middle of the emergency discharge pipe 747. When the container internal space 111 is raised to a set pressure or higher without lowering in an emergency during processing, the manual on-off valve 748 is opened, and steam is released from the container internal space 111 to reduce the pressure.

As is clear from fig. 5, 9, 10, 14, etc., the pipes and the members constituting the piping section 7 are almost all arranged in a concentrated manner in the rear of the reaction vessel 1, and thus the maintenance of the piping system is excellent. The piping section 7 is provided at the height position of the second upper beam member 52 of the stand 4, and is accessible from both the second floor and the third floor, and therefore, the maintainability is excellent in this point.

The pipes and the members of the piping section 7 can be supported by a two-layered portal frame erected at the rear of the reaction vessel 1. The portal frame can be erected on the second beam member 42 of the larger or smaller size. In this way, a firm portal frame can be formed, and the pipes and components of the piping section 7 can be safely supported.

Stirring device structure

Next, the structure of the stirring device 2 will be described with reference to fig. 7 to 10. As described above, the stirring device 2 has the rotating shaft 21 inserted substantially horizontally through the container body 11, the prime mover 22 for rotating the rotating shaft 21, and the power transmission mechanism 23 for transmitting the power of the prime mover 22 to the rotating shaft 21.

The pair of right and left bearing base portions 211 are fixed to right and left side surface portions of the container body 11 so as to protrude outward and rightward. Both ends of the rotating shaft 21 are rotatably supported by bearings 212 provided in the bearing base portion 211. The rotation shaft sprockets 213 are fixed to both ends of the rotation shaft 21 on the left and right outer sides of the bearing 212, respectively.

The prime mover 22 is, for example, a motor with a decelerator, and is mounted on a prime mover support plate 221 fixed to the second beam member 42 and the seventh beam member 47 of the cross frame 4 at the rear of the reaction vessel 1. The prime mover sprocket 223 is fixed to the output shaft 222 of the prime mover 22. Further, as the prime mover 22, another prime mover such as an internal combustion engine or a hydraulic motor may be used.

The power transmission mechanism 23 has a transmission rotation shaft 231 provided between the prime mover 22 and the reaction vessel 1. The transmission rotation shaft 231 is disposed to extend in the left-right direction. Bearing stands 232 are fixedly provided to the three seventh beam members 47 provided at the rear of the stand 4, respectively. The left and right end portions and the left and right direction center portion of the transmission rotation shaft 231 are rotatably supported by bearings 233 attached to the bearing stand 232.

A driven sprocket 234 is fixed to the transmission rotation shaft 231 in front of the prime mover sprocket 223. A drive chain 235 is wound around the prime mover sprocket 223 and the driven sprocket 234, and can transmit the power of the prime mover 22 to the transmission rotation shaft 231. The sprockets 223, 234 and the drive chain 235 are covered by a cover 236.

Both end portions of the transmission rotation shaft 231 are disposed obliquely rearward and downward of both end portions of the rotation shaft 21. The drive rotation shaft 231 is fixed at both ends thereof with drive shaft sprockets 237, respectively. The left and right driven chains 238 are wound between the left and right rotation shaft sprockets 213 and the left and right transmission shaft sprockets 237. Accordingly, the power of the motor 22 is transmitted to the rotary shaft 21 via the power transmission mechanism 23, and the arm 24 and the stirring blade 25 are rotated about the rotary shaft 21 in the container internal space 111, whereby the processed object can be stirred. The sprockets 213, 237 and the driven chain 238 are covered by a cover 239.

Since the power of the prime mover 22 is transmitted to both ends of the rotating shaft 21 via the power transmission mechanism 23, even if a force is applied to the rotating shaft 21 during processing, the rotating shaft 21 is not twisted, and durability can be improved and smooth stirring can be maintained. In addition, in one treatment, the stirring blade 25 may be rotated in the reverse direction by switching the prime mover 22 between the normal rotation and the reverse rotation, so that stirring can be performed efficiently. In addition, the stirring blade 25 may be changed in rotation speed to perform efficient stirring in one process, and for example, the rotation speed may be changed to "high speed", "medium speed" or "low speed".

Further, since the prime mover 22 and the power transmission mechanism 23 are disposed so as to effectively utilize the free space below the piping section 7, the organic waste treatment apparatus 100 can be compactly formed. Further, if the empty spaces adjacent to the left and right sides of the prime mover 22 of the second floor are effectively utilized as the installation areas of the hydraulic compressor 8 or the air compressor 9, a more compact organic waste treatment device 100 can be realized.

Other embodiments

Fig. 17 is a schematic side view showing an upper portion of a container according to another embodiment. The organic waste treatment apparatus 100 of the present embodiment is connected to a feed pipe 91 for feeding liquid waste into the reaction vessel 1. In the present embodiment, the liquid waste can be introduced into the reaction vessel 1 from the introduction pipe 91 without opening and closing the opening and closing cover 132 on the introduction side.

The input tube 91 is connected to a side surface of the input tube 131. A water tank 92 for storing liquid waste is connected to an end of the input pipe 91 opposite to the reaction vessel 1. The liquid waste stored in the water tank 92 is, for example, a pasty liquid such as pig manure or sludge. A first charging on-off valve 93 and a second charging on-off valve 94 are provided in series in the middle portion of the charging pipe 91. A purge water pipe 95 is connected to an intermediate portion between the first and second throw-in on/off valves 93 and 94 of the throw-in pipe 91. An end of the cleaning water pipe 95 opposite to the input pipe 91 is connected to a cleaning water supply unit 96 for supplying cleaning water. An on-off valve 97 for cleaning water is provided in the middle of the cleaning water pipe 95.

When the liquid waste in the water tank 92 is put into the reaction vessel 1, the first and second input opening/closing valves 93 and 94 are opened with the input-side opening/closing cover 132 and the discharge-side opening/closing cover 141 closed, and the liquid waste is caused to flow into the reaction vessel 1. At this time, the discharge-side on-off valve 744 of the steam discharge pipe portion 74 may be opened, and a vacuum pump (suction means) connected to the steam discharge pipe portion 74 may be operated to depressurize the container internal space 111 of the reaction container 1, thereby improving the liquid waste input efficiency. The opening/closing valve 97 for the washing water may be opened to allow the washing water to flow into the container internal space 111 together with the liquid waste.

In the present embodiment, liquid waste can be introduced into the reaction vessel 1 from the introduction pipe 91 in a state where the opening/closing cover 132 on the introduction side is closed. Therefore, the malodor emitted from the liquid waste can be prevented from diffusing to the periphery of the reaction vessel 1, and the working environment can be improved. In addition, when the vacuum pump is connected to the steam discharge pipe portion 74 to depressurize the container internal space 111, a deodorizing device may be connected to the middle portion of the steam discharge pipe portion 74 to prevent the discharge of malodor.

After liquid waste is put into the reaction vessel 1, the first on-off valve 93 for putting is opened, the second on-off valve 94 for putting is closed, and the on-off valve 97 for washing water is opened, so that washing water flows from the washing water supply unit 96 into the input pipe 91 through the washing water pipe 95, and the input pipe 91 is washed. The portion of the inlet pipe 91 near the reaction vessel 1 is inclined obliquely downward toward the reaction vessel 1. This makes it difficult to leave liquid waste in the interior of the portion of the inlet pipe 91 close to the reaction vessel 1. When the reaction vessel 1 is brought into a subcritical state by high-temperature high-pressure saturated steam to hydrolyze the liquid waste, the first charging on-off valve 93 is closed. Since the high pressure is not applied to the second throw-in on/off valve 94 and the purge water on/off valve 97, the on/off valve can be selected to be cheaper than the first throw-in on/off valve 93, and the manufacturing cost can be reduced.

In FIG. 17, the inlet pipe 91 is connected to the inlet tube 131 of the reaction vessel 1, but may be connected to the upper part of the vessel main body 11. A pump for feeding the liquid waste from the water tank 92 to the reaction vessel 1 may be provided in the middle of the inlet pipe 91.

The present embodiment has been described above, but the present invention is not limited to the above embodiment, and may be embodied in various forms. The respective configurations are not limited to the illustrated embodiments, and various modifications can be made within the scope not departing from the gist of the present invention. For example, the configurations described in the above embodiment and modification (exception, etc.) may be combined. In addition, the structure may be added, omitted, replaced, or changed to another structure.

For example, a bearing support frame may be provided on the stand 4, the bearing support frame supporting the bearing 212, the bearing 212 rotatably supporting the rotation shaft 21. In this case, the beam member of the bearing support frame erected on the mount 4 may be increased in size to increase the support rigidity of the bearing 212. Further, a load cell may be interposed between the bearing support frame and the beam member, and the weight of the treatment object placed in the container internal space 111 may be measured by the load cell and the load cell 62 below the support leg 20 of the container body 11. In this case, a single plate member covering these load cells may be interposed between the bearing support frame and the load cell below the bearing support frame and between the support leg 20 and the load cell 62, so that the weight of the reaction vessel 1 may be dispersed in these load cells.

In addition, two organic waste treatment apparatuses 100 may be disposed adjacent to each other in the left-right direction, and the steam header 81 may be shared by the organic waste treatment apparatuses 100. The steam discharge pipe 15 may be connected to the inlet tube 131. At least one of the safety valve connection pipe 16, the air outlet pipe 17, the pressure gauge connection pipe 18, and the temperature gauge connection pipe 19 may be connected to the container body 11.

The present specification includes the structures of the following embodiments.

As shown in fig. 12, 13, etc., the organic waste treatment apparatus according to the embodiment includes: a reaction vessel 1 which accommodates a treatment object and has a discharge port 148 provided at the bottom; a stand 4 for supporting the reaction vessel 1. The stand 4 includes: 4 support posts 40 erected on the device installation surface at four corners of a rectangular shape in plan view; a pair of first beam members 41 that are transversely arranged between the struts 40 aligned in the first direction along one side of the rectangle; a pair of second beam members 42 extending in a second direction orthogonal to the first direction and transversely extending at a distance from each other at an intermediate portion of the first beam members 41; a pair of third beam members 43 extending in the first direction and transversely extending at an interval from each other at an intermediate portion of the second beam members 42; and fifth beam members 45 provided at four corners of a quadrangle surrounded by the second beam member 42 and the third beam member 43, respectively. The fifth beam member 45 forms a diagonal bracing member. The strut 40 and the beam members 41, 42, 43, 45 are formed of steel. The reaction vessel 1 is placed so that the outlet 148 is located in the square frame in plan view at the intersection of the second beam member 42 and the third beam member 43, and is placed across the second beam member 42, the third beam member 43, and the fifth beam member 45.

In the organic waste treatment apparatus according to the present embodiment, the weight of the reaction vessel 1 is received by the column 40 and the first to third beam members 41 to 43 formed of steel material, and the fifth beam member 45 (diagonal member) is provided at the position where the reaction vessel 1 is placed, so that the support rigidity of the reaction vessel 1 can be improved. Accordingly, even if the dimensions of the other beam members (for example, the fourth beam member 44 and the sixth to ninth beam members 46 to 49 shown in fig. 1 to 3) constituting the mount 4 are made relatively small, the strength of supporting the reaction vessel 1 can be ensured, and the weight and manufacturing cost of the mount 4 can be reduced.

As shown in fig. 7 to 10, etc., the fifth beam member 45 (diagonal member) is formed of a steel material having a smaller cross-sectional area than the first to third beam members 41 to 43.

According to such a practical aspect, the fifth beam member 45 (diagonal member) can be made relatively small in cross-sectional area, whereby the weight and manufacturing cost of the stand can be reduced.

As shown in fig. 7 to 12, a metallic container mount 61 disposed across the second beam member 42, the third beam member 43, and the fifth beam member 45 is fixed to the gantry 4 at an intersection of the second beam member 42 and the third beam member 43. The reaction vessel 1 is placed on a vessel placement table 61.

According to this embodiment, the reaction vessel placement portion of the rack 4 can be formed in a more secure structure, so that the reaction vessel 1 can be reliably supported, and safety can be improved.

As shown in fig. 1 to 4, 6, etc., the stand 4 has a pair of fourth beam members 44 that transversely span between the struts aligned in the second direction. The fourth beam member 44 is provided so as to extend in the second direction. On three of the four outer peripheral sides surrounded by the strut 40 and the first and fourth beam members 41, 44, a support 50 that connects the middle portion of the lower first or fourth beam member 41 or 44 of the strut 40 is provided.

According to such an embodiment, the rigidity and strength of the stand 4 can be improved by providing the support 50, and the operator can easily access the stand 4 by not providing the support 50 on one of the four outer peripheral side surfaces, thereby improving workability.

As shown in fig. 7 to 13, the reaction vessel 1 is supported on the stand 4 via a load cell 62.

According to such an embodiment, since the weight of the treated material stored in the reaction vessel 1 can be measured, the treatment time and the treatment temperature can be adjusted or moisture can be added according to the weight of the treated material, the water content measured in advance, and the like, and the treatment efficiency can be improved.

As shown in fig. 15, a frame-shaped metal plate member 68 (frame-shaped metal member) surrounding the discharge port 148 in a plan view may be provided between the reaction vessel 1 and the load cell 62.

According to this embodiment, since the frame-shaped metal plate member 68 can disperse the weight of the reaction vessel 1, the weight can be prevented from concentrating on one load cell 62, and the accuracy of measuring the weight of the processed product stored in the reaction vessel 1 can be improved. In addition, heat transferred from the reaction vessel 1 to the load cell 62 can be emitted through the frame-shaped metal plate member 68 during processing, and damage to the load cell 62 due to heat can be prevented.

As shown in fig. 5, 7 to 10, 13, 14, etc., the organic waste treatment apparatus of the embodiment includes a reaction vessel 1 for storing a treatment product, and includes an inlet 112 at an upper portion thereof and an outlet 148 at a lower portion thereof. The reaction vessel 1 has a vertically open inlet tube 131, the vertically open inlet tube 131 being connected upward to an inlet 112 opening in the upper portion of the vessel body 11, and an inlet-side opening/closing cover 132, the opening/closing cover 132 being capable of hermetically closing the upper end of the inlet tube 131. A steam suction pipe 12 for sucking saturated steam into the container inner space 111 is connected to the upper portion of the container body 11. On the other hand, a steam discharge pipe 15, a relief valve connection pipe 16, and an air discharge pipe 17 are connected to the side surfaces of the inlet tube 131.

According to the organic waste treatment apparatus of the embodiment, the pipe for sucking steam into the reaction vessel 1 and the pipe for discharging steam therefrom can be arranged vertically apart, so that the possibility of mistaking the pipe for sucking steam and the pipe for discharging steam therefrom during maintenance can be reduced, and maintenance can be improved.

As shown in fig. 5, 9, 10, 14, and the like, the organic waste treatment device of the embodiment includes a piping section 7, and the piping section 7 extends from each of the steam suction pipe 12, the steam discharge pipe 15, the safety valve connection pipe 16, and the air discharge pipe 17, and extends in the same direction from a position in the vicinity of the reaction vessel 1.

According to such an embodiment, the piping system can be arranged in a concentrated manner, so that maintainability is good.

As shown in fig. 9, 10, 14, etc., the organic waste treatment apparatus of the embodiment includes a stand 4 for supporting the reaction vessel 1. The stand 4 has a first floor plate 63 (first floor portion) provided at a height position of a lower portion of the reaction vessel 1 and a second floor plate 66 (second floor portion) provided at a height position of an upper portion of the reaction vessel 1. The piping constituting the piping section 7 extends along the second floor board 66 (second floor).

According to such an embodiment, the pipes can be accessed from both the first floor portion and the second floor portion, and thus maintenance performance can be improved.

As shown in fig. 8 to 10, 14, etc., the organic waste treatment apparatus according to the embodiment includes a stirring device 2 for stirring the treated material in the reaction vessel 1. The driving source (the prime mover 22 and the power transmission mechanism 23) of the stirring device 2 is disposed below the piping section 7 and above the first floor material 63 (the first floor section).

According to such an embodiment, the empty space of the first floor portion below the piping portion 7 can be effectively utilized, so that the organic waste treatment device can be compactly formed.

The structures of the above embodiments may be combined, and the structures may be added, omitted, substituted, or changed.

Symbol description

The reaction vessel 1, the stirring device 2, the stand 4, the piping 7, the vessel body 11, the vessel inner wall surface 11a, the organic waste treatment device 100, the vessel inner space 111, the discharge side opening 114, the opening/closing lid 141, the lid upper surface 141a, the lid body 142, the lid upper surface 142a, the inner peripheral surface 142b, the body protrusion 142c, the gasket 142d, the lid protrusion 143, the protrusion upper surface 143a, the outer peripheral surface 143, the lid 144, the ring 145, the body protrusion 145a, the lid protrusion 145, the flange 146, the lid protrusion 146a, and the discharge port 148.

Claims (8)

1. An organic waste treatment apparatus comprising:

a reaction vessel for accommodating a treatment object;

an opening/closing lid for opening/closing a discharge-side opening provided in the bottom of the reaction vessel; and

a stirring device for stirring the treated material in the reaction vessel,

the opening/closing lid closes the discharge-side opening in a closed state, and is provided so that a lid upper surface portion exposed to a container internal space of the reaction container approaches a container internal wall surface of the reaction container.

2. An organic waste treatment apparatus according to claim 1, wherein,

the inner wall surface of the container around the discharge-side opening is curved in a concave shape,

the lid upper surface portion is curved in a concave shape along the inner wall surface of the container.

3. An organic waste treatment apparatus according to claim 1, wherein,

the inner wall surface of the container around the discharge side opening is substantially concave spherical;

the cover upper surface portion is curved in a substantially concave spherical shape.

4. An organic waste treatment apparatus according to any one of claim 1 to 3, wherein,

the opening/closing cover is provided with:

A cap body which is attached to the discharge-side opening and has a cylindrical shape; and

a cover body having a cover convex portion fitted into the cover body,

the inner peripheral surface of the cover main body is formed in a cone shape with a narrow side of the inner space of the container,

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.

5. The organic waste treatment apparatus according to claim 1, wherein,

a suction mechanism connected to the discharge pipe of the reaction vessel for depressurizing the internal space of the reaction vessel,

the organic waste treatment device is configured such that the inside of the reaction vessel containing the treatment product is brought into a subcritical state by saturated steam, the treatment product is hydrolyzed while being stirred by the stirring device, and after the opening/closing lid is opened, the steam in the internal space is sucked by the suction mechanism, so that the internal space approaches an external air pressure.

6. The organic waste treatment apparatus according to claim 1, comprising:

a stand for supporting the reaction vessel,

the reaction vessel is supported by the stand via a load cell.

7. The organic waste treatment apparatus according to claim 6, wherein,

a frame-shaped metal member surrounding the discharge port in a plan view is provided between the reaction vessel and the load cell.

8. The organic waste treatment apparatus according to claim 1, wherein,

the reaction vessel is connected with an input pipe for inputting liquid waste.