JPH0230421Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a sludge composting device.

Conventionally, as an apparatus for composting sewage sludge or the like, there is an apparatus in which a composting chamber is arranged in a planar manner for fermenting mixed sludge obtained by mixing seed sludge and raw material sludge. However, due to the flat layout, it is difficult to effectively utilize the fermentation heat, and it is also difficult to utilize the site effectively.

Therefore, the purpose of this invention is to make effective use of fermentation heat and to make effective use of the site.

In order to achieve this purpose, the present invention provides a spiral compost chamber inside a cylindrical container, an inlet for introducing sludge into the compost chamber at the top, and a system for composting from the compost chamber at the bottom. A sludge discharge port is provided, an air supply pipe to the composting chamber is arranged on the floor of the composting chamber, and the sludge can be transferred in a spiral manner along the longitudinal direction of the composting chamber. This switching device is formed by an endless chain with flights extending between one sprocket located above the sludge and the other sprocket located in the sludge.

Therefore, the site can be used more effectively than when the composting room is arranged flat, and the fermentation heat generated in the lower part of the composting room is transferred to the upper part and used effectively. Since the air supply pipe is placed on the floor of
Even though the composting room has a layered structure, it is possible to uniformly supply air to the sludge throughout the composting room, and by installing a sludge transfer device that can move in a spiral, it can be adjusted according to the degree of fermentation. The sludge can be reliably transferred from the input port to the discharge port.

Hereinafter, one embodiment of the present invention will be described based on the drawings. In Figures 1 and 2, a cylindrical container 1
A spiral composting chamber 2 having a rectangular cross section as shown in FIG. 3 is provided inside the composting chamber. The central part 3 of the container 1 is an open space. container 1
The top plate 4 of the container 1 is provided with an inlet 6 for injecting sludge 5 into the compost chamber 2 section at the top, and the bottom plate 7 of the container 1 is provided with an inlet 6 for injecting sludge 5 from the compost chamber 2 section at the bottom. A discharge port 8 is provided. 9 is the floor of the composting room 2.

FIG. 3a shows an example of the floor part 9,
This floor part 9 has a floor plate 10 that is made of punched metal, a mesh board, etc. and has breathability, and has a space between the partition plate 11 between the upper and lower compost chambers 2 and the floor plate 10 to fit the compost chamber 2. It has an air supply pipe 12 arranged spirally. 13 is an air outlet of the air supply pipe 12, and 14 is a pipe receiving member. Further, FIG. 3b shows another example of the floor section 9, in which 15 is a partition plate between adjacent air supply pipes 12.

A sludge 5 turning transfer device 16 is provided in the composting chamber 2 . This device 16 is the fourth
As shown in FIGS. 5 to 5, a pair of sprockets 18 at one end are movable above the sludge 5 along a longitudinal rail 17 provided on the inner surface of the side wall of the composting chamber 2, and a pair of sprockets 18 at one end of the sprocket 18 are movable above the sludge 5. It has a sprocket 19 at the other end, and an endless chain 20 with a flight attached between both sprockets 18 and 19. Although not shown, the cutback transfer device 16
is actually attached to a two-axis truck that runs along a rail 17, and the sprocket 19 at one end is configured to be able to swing around the sprocket 18 at the other end, so that it can assume an inclined position as shown in the figure. It is being done. Further, the axles of the carts are not parallel to each other, but are arranged in the radial direction of the cylindrical container 1, so that the carts can easily travel within the composting chamber 2.

Explain the action. A certain amount of sludge 5 from the input port 6
into the composting chamber 2, and transfer it to the composting device 1.
6 is moved from the discharge port 8 toward the input port 6.
At this time, as shown in FIGS. 2 and 5, the other end sprocket 19 is positioned closer to the inlet 6 than the one end sprocket 18 so that it enters the sludge 5, and the endless chain 20 with flights is turned back and forth. The transfer device 16 is caused to travel in a direction B opposite to the moving direction A. Then, the switching transfer device 16 transfers the sludge 5
The paper is transferred by the length of the device 16 toward the discharge port 8 while switching back and forth.

By the above operation, the compost chamber 2 directly below the input port 6
As the portion becomes empty, the other end sprocket 19 is lifted above the sludge 5 as shown by the imaginary line in FIG. Insert. Then, the turning transfer device 16 is operated again, and the sludge 5 is turned back and transferred together with the first input amount. By repeating this, the sludge 5 with a uniform thickness is transferred over the floor 9 of the composting chamber 2.

At the same time, fermentation air is sent to the air supply pipe 12. Then, this air passes through the floor plate 10 from the air outlet 13, passes through the sludge 5 to aid fermentation, and is then discharged from the input port 6 or the air outlet (not shown) provided at a suitable location in the composting chamber 2. be done. As mentioned above, the air supply pipe 12 is arranged spirally on the floor 9 according to the shape of the composting chamber 2, so even though the composting chamber 2 has a laminated structure, the air supply pipe 12 is disposed throughout the inside of the composting chamber 2. Air can be uniformly supplied to the sludge 5 across the air.

In addition, since the compost chamber 2 has a spiral stacked structure, the fermentation heat generated in the lower compost chamber 2 is transferred to the upper compost chamber 2, and is effectively used by assisting fermentation in the upper compost chamber 2. be.

In this way, the sludge 5 is appropriately stirred while being supplied with air, and is transported spirally inside the compost chamber 2 while being fermented in a good condition. During this transfer, the degree of fermentation of the sludge 5 gradually progresses, and the composted sludge 5 eventually reaches the discharge port 8, and is dropped from this discharge port 8 into a combustor or the like (not shown) and is carried out. .

As described above, according to the present invention, the site can be used more effectively than when the composting room is arranged flat, and the fermentation heat generated in the lower part of the composting room is transferred to the upper part, making it more effective. Furthermore, by placing air supply pipes on the floor of the composting room, even though the composting room has a layered structure, air can be uniformly supplied to the sludge throughout the composting room, and the sludge can move in a spiral. By installing a sludge transfer device that allows
The sludge can be reliably transferred from the input port to the discharge port in order according to the degree of fermentation.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a sectional view of its front, Figs. The figure is a diagram illustrating the operation of the cut-back transfer device. 1... Cylindrical container, 2... Compost room, 6...
...Inlet, 8...Outlet, 9...Floor, 12...
Air supply pipe, 16... cutback transfer device.

Claims (1)

[Scope of utility model registration request] A spiral compost chamber is provided inside the cylindrical container, and an inlet for sludge into the compost chamber at the top is provided, as well as an outlet for the composted sludge from the compost chamber at the bottom. An air supply pipe into the composting chamber is arranged on the floor of the composting chamber, and a sludge transfer device capable of moving spirally in the composting chamber along the longitudinal direction of the composting chamber is installed. A sludge composting device characterized in that an endless chain with flights is formed by extending one sprocket located above the sludge and the other sprocket located in the sludge.