JPS60202797A - Unit type vertical multistage fermentation tank - Google Patents

Abstract

PURPOSE:To shorten construction time and to improve reliability of a constructed unit by building up necessary numbers of stage of unit fermentation tank each having cell wall plates at the external periphery of the unit to be constructed and freely openable and closeable trays at the bottom together with an opening and closing mechanism of the tray at the bottom of the unit, at the construction site to construct a multistage tank. CONSTITUTION:(A) is a unit fermentation tank designated to a size suited to transportation which is preferred to correspond to one stage of a multistage fermentation tank, but if the unit is larger, it is further divided so as to make it transportable to the construction site. In this fermentation tank (A), the constructing frame 1 having necessary strength for supporting the tank is constructed by assembling vertical stays 1a, frames 1b, and reinforcements 1c, appropriately. Then, the tank wall is constructed by attaching wall plates 2 fabricated to have heat insulating effect to the inside of the unit construction 1. Further, a tray 3 is attached freely openable and closeable by an opening and closing device 4 to the bottom of the unit.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention aims to shorten the construction period and improve the reliability of the product in manufacturing and on-site installation of a unit type vertical multi-stage fermenter.

When treating sewage sludge, livestock feces, and other organic wastes by subjecting them to aerobic fermentation, the fermented materials, such as sewage sludge and livestock feces, have a high moisture content and are difficult to undergo aerobic fermentation as they are. Therefore, this fermented material with a high moisture content is dehydrated, but it still has a high moisture content suitable for aerobic fermentation. Therefore, dry organic matter with low moisture content such as rice husks, grass, bark, and sawdust is added to this fermented material.
Alternatively, the desired aerobic fermentation can be carried out in the tank by adding and mixing compost from the fermentation stream as a reflux to adjust the moisture content and air permeability. However, for this aerobic fermentation, it is necessary to adjust the inside of the tank so that the bacteria are actively active.

This active fermentation is achieved by maintaining proper aeration and temperature, and it has been proposed that more efficient fermentation be achieved by using a multi-stage fermenter. Conventional multi-stage fermenters employ a method in which small blocks are assembled at the factory, then transported to the site and assembled step by step, but this method lengthens the on-site assembly work and lacks product reliability. There are drawbacks.

In view of this, the present invention manufactures unitized fermenters in a transportable size at a factory, transports them to the site and assembles them into the required number of stages, shortens the installation period, and standardizes through factory production. This is to obtain a high quality multi-stage fermenter.

The present invention will be explained below based on the illustrated embodiment. FIG. 1 is a front view showing a one-stage unitized fermenter produced in a factory, and FIG. 2 is a plan view thereof.

In the figure, A is a unit-sized fermenter that can be transported, preferably one stage of a multi-stage system, but if it is a large tank, it should be able to be divided so that it can be transported to the site. Eggplant.

This two-knit fermenter A has a structure 1 having the required strength to support the fermenter, consisting of vertical supports 1a and horizontal crosspieces 1b.
and reinforcing material 10 are appropriately combined and assembled, and a tank wall board 2 having heat insulating properties is attached to the structure 1 so as to surround the outer periphery of the tank, and a shelf board 3 is opened and closed at the bottom of this structure 1. It is constructed by attaching the device 4 so that it can be opened and closed freely.

The tank wall plate 2 uses heat conduction, and in order to prevent the dissipation of fermentation heat in the fermentation tank, the wall plate is made of corrosion-resistant material and an inner plate 21 made of a material with low thermal conductivity.
Although the structure is such that the inner and outer panels 21 and 22 are separated by a heat insulating material 23, other structures may be used as long as the same purpose is achieved, and the present invention is not limited to this. do not have.

When fixing the tank wall plate 2 to the structure 1, it can be directly fixed using fasteners such as bolts, but it can also be fixed using a temporary support 5 as shown in FIG. This temporary support 5 is made of a material with low thermal conductivity, such as synthetic resin (the material is not limited as long as it is a material with low thermal conductivity), and is made of a groove 51 into which the edge of the tank wall plate 2 fits. The tank wall plate is fitted into the groove of this temporary support, and the temporary support is fixed to the structure by bolts, etc., thereby minimizing the contact area between the tank wall plate and the structure. It shall also prevent corrosion due to the potential difference between different materials.

In order to attach the tank wall plate to this structure 1 using temporary supports 5, first assemble the structure 1 according to the size and shape of the fermenter, and then attach a material with low thermal conductivity to this structure 1. Then, after arranging the grooved temporary supports 5 vertically facing each other to match the height of the wall board and fixing them to the structure using bolts or other fasteners provided on the temporary supports, these upper and lower temporary supports are The tank wall plate 2 is fitted and attached in the same way as a sliding door is fitted between the two. A large number of shelves are provided at the bottom of the fermenter assembled in this manner, and all the shelves are opened and closed by an opening/closing device 4 provided outside the tank. do.

This assembly is done at the factory. At this time, the corrosion-resistant shelf board 6 is supported by the structure via the shaft, but it supports the weight of the contents (fermented materials) deposited on the shelf board, and also protects against the earth pressure and own weight applied to the tank wall board. The tank is supported by the structure via a temporary support, and the tank wall plate and temporary support are sealed with silicone material to maintain airtightness so that odor from outside the tank does not leak outside. . This unitized fermenter A
They are transported to the site and assembled in multiple stages depending on the number required.

Each layer is stacked at the bottom, and the joints of each type of membrane are filled with packing material and sealed on-site to ensure airtightness. In this way, the required multi-stage fermenter is assembled on-site, and the shelf boards provided at each stage are opened and closed by an opening/closing device, and the fermented material is dropped from the upper stage to the lower stage.

6 is the roof, and when the present invention is installed on the upper part of the structure, the present invention performs the mechanical work and assembly of the unit in the factory, so the product is uniform and can be of high quality and reliability. .

In addition, since the required number of tiers are simply stacked on-site, installation is simple and safe, and the construction period can be shortened.

By using a material such as Al/Sand inch board, which has excellent corrosion resistance and heat insulation properties, for the casing, the service life and heat retention can be increased, and conditions suitable for fermentation of the contents can be provided. It has the following advantages.

[Brief explanation of drawings]

Figure 1 is a front view showing a fermenter for -units, Figure 2 is a plan view of the same, Figure 3 is a front view of a multi-stage fermenter, Figure 4 is a vertical side view of Figure 6, and Figure 5. is an enlarged cross-sectional view. 1 is the structure, 2 is the tank wall,
3 is a shelf board, 4 is a switchgear, 5 is a board holder, and 6 is a roof. Extra 1 koku procedural amendment ■ Showa era! Mr. Kazuo Wakasugi, Commissioner of the Patent Office, 2nd year of the Onnazuki Tsunoday 2, Relationship with the invention title case Patent applicant 0' Amagasaki type Shimosakabe 3rd term 11-1f< g ′B= Mnezu Kogyo Stock Company 4, Agent (1) Shin-I Reconstruction・) 4 Specification 1 Name of the invention Unit-type multi-stage fermenter 2 Claims Claims A fermenter for performing aerobic fermentation treatment A tank wall plate is provided around the outer periphery of the structure, and a shelf plate that can be opened and closed and an opening/closing mechanism are provided at the bottom.The unit fermenters are stacked in the required number of stages on site to form a multi-tiered tank. A unit-type vertical multi-stage fermenter featuring: 6. Detailed Description of the Invention Industrial Field of Application The present invention relates to a unit type multi-stage fermenter, and aims to shorten the construction period and improve product reliability in manufacturing and on-site installation. . Conventional technology and its problems When aerobic fermentation is performed on sewage sludge, livestock dung, and other organic wastes, the fermented materials, such as sewage sludge and livestock dung, have a high moisture content, making it difficult to carry out aerobic fermentation as is. It's difficult to do. Therefore, this high water content fermented material is dehydrated, but the water content is still higher than suitable for aerobic fermentation. Therefore, dry organic matter with low moisture content such as rice husks, grass, bark, and sawdust, or compost from the fermentation method is added and mixed as a reflux material to this fermented material to adjust the moisture content and air permeability, thereby achieving the desired aerobic property. It is strained so that fermentation takes place in a tank. Moreover, for this aerobic fermentation, it is necessary to adjust the inside of the tank so that the bacteria are actively active. This active fermentation is achieved by maintaining proper aeration and temperature, and it has been proposed that more efficient fermentation be achieved by using a multi-stage fermenter. Conventional multi-stage fermenters employ a method in which small blocks are assembled at the factory, then transported to the site and assembled step by step, but this method lengthens the on-site assembly work and lacks product reliability. There are drawbacks. Means for Solving the Problems In view of this, the present invention manufactures unitized fermenters in a size that can be transported at a factory, transports them to the site, and assembles them into the required number of stages, thereby shortening the installation period. The structure was designed to achieve a high-quality, standardized multi-stage fermentation tank produced in a factory, with a tank wall plate around the outer periphery of the structure, and a shelf board and an opening/closing mechanism that can be freely opened and closed at the bottom. The gist is a unit-shaped vertical multi-stage fermenter characterized by stacking the fermenters of the unit to the required number of stages on-site to form a multi-stage structure. EXAMPLES The present invention will be explained below based on the illustrated embodiments. FIG. 1 is a front view showing a one-stage unitized fermenter produced in a factory, and FIG. 2 is a plan view thereof. In the figure, A is a fermenter with a size that can be transported.It is preferably a single stage of a multi-stage system, but if it is a large tank, it can be divided into parts to transport it to the site. Be able to do it. The fermenter A of this unit is assembled by appropriately combining the vertical struts 1a, the lateral beams 1b, and the reinforcing material IC. A plurality of tank wall plates 2 having heat insulating and heat retaining properties are attached to four sides to form a tank wall, and a shelf board 8 is attached to the lower part of the tank wall plate 2 so as to be openable and closable by an opening/closing device 4. The tank wall plate 2 is made of corrosion-resistant material and an inner plate 21 made of a material with low thermal conductivity to prevent the dissipation of fermentation heat in the fermentation tank by heat conduction.
Although the structure is such that the inner and outer panels 21 and 22 are separated by a heat insulating material 28, other structures may be used as long as the same purpose is achieved, and there are limitations such as gaps. There isn't. When fixing the tank wall plate 2 to the structure 1, it can be directly fixed using fasteners such as bolts, but it can also be fixed using a temporary support 6 as shown in FIG. This temporary receiver 5
The groove 61 that fits the edge of the tank wall plate 2 is made of a material with low thermal conductivity, such as synthetic resin (the material is not limited as long as it has low thermal conductivity). , the tank wall plate is fitted into the groove of this temporary support, and the temporary support is fixed to the structure by tightening bolts, etc. This minimizes the contact area between the tank wall plate and the structure, and increases heat transfer by heat conduction. In addition to preventing heat dissipation, it also prevents corrosion due to the potential difference between different materials.In order to attach the tank wall plate to this structure 1 using the temporary support 5, first attach the structure 1 to the thick part of the fermenter. It is assembled according to the size and shape, and on this structure l, temporary supports 5 made of a material with low thermal conductivity and grooved are arranged vertically facing each other according to the height of the wall board, and installed in the temporary supports. After fixing to the structure with fasteners such as bolts, the tank wall plate 2 is fitted and attached to the upper and lower temporary supports in the same way as sliding doors are fitted between them.The lower part of the fermenter assembled in this way A large number of shelf boards are installed in the tank, and all the shelves are opened and closed by an opening/closing device 4 provided outside the tank to form a unit fermenter A. This assembly is carried out at a factory. At this time, the corrosion-resistant shelf board 8 is supported by the structure via the shaft, but it supports the weight of the contents (fermented material) deposited on the shelf board, and also supports the earth pressure applied to the tank wall board. The tank wall plate and the temporary support are sealed with a sealing material such as silicone to ensure airtightness so that the structure can support the body's own weight via the temporary support, and to prevent odor from outside the tank from leaking outside. This unitized fermenter A is transported to the site according to a majority of 8 and assembled in a multi-stage manner.This is stacked from the bottom of each stage. In this way, the necessary number of stages are stacked on-site to form a multi-stage fermenter, which is supported on separately provided columns 8 to prevent horizontal forces caused by earthquakes and wind. The shelf boards installed on each stage are opened and closed using an opening/closing device, allowing the fermented material to fall from the upper stage to the lower stage. Reference numeral 6 is a lid, which is installed at the top of the structure to prevent odors from inside the fermenter. It prevents rainwater from leaking outside and also prevents rainwater from entering the inside of the fermenter. Effects of the Invention According to the present invention, the units are processed and assembled in the factory, so the products are uniform, high quality, and reliable. Once the product is completed, the installation is simple and safe because it can be simply stacked to the required number of layers on site, shortening the construction period. The use of these materials has advantages such as increased service life and heat retention, and the ability to provide suitable conditions for fermentation of the contents. 4. Brief explanation of the drawings Figure 1 is a front view of a fermenter for -units, Figure 2 is a plan view of the same, Figure 8 is a front view of a multi-stage fermenter, and Figure 4 is a front view of a fermenter for one unit. A vertical side view, and FIG. 5 is an enlarged sectional view. A is a -unit fermenter, l is a structure, 2 is a tank wall,
B is a shelf board, 4 is an opening/closing device, 5 is a plate holder, 6 is a lid, 7 is a reinforcing material, 8 is a column, and 9 is a support metal fitting. Patent applicant: 1 person outside Hitachi Kiden Kogyo Co., Ltd.

Claims (1)

[Scope of Claims] In a fermenter for performing aerobic fermentation treatment, a unit fermenter is provided on-site, with a tank wall plate provided around the outer periphery of the structure, and a shelf board that can be opened and closed at the bottom. A unit type multi-stage fermenter for standing boiling, characterized in that the units are stacked to a required number of stages to form a multi-stage tank.