JPS6348679Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is an opening/closing method installed on the wall of a composting fermentation tank for municipal waste, sewage sludge, farmed waste, agricultural waste, and other organic waste. It's about doors.

[Prior art]

Composting organic waste is usually done by storing the materials (composting raw materials) for a certain period of time, and during that period, stirring at appropriate intervals while supplying an appropriate amount of air from the floor surface to carry out aerobic fermentation. This is done by promoting. In addition, although air supply from the floor may be omitted, stirring is an essential operation for reasons such as homogenization of the material, uniformity of aeration, and substantial expansion of the aeration surface area.

In order to make the composting operation continuous, a function is required to transport the material in a fixed direction at the same time as the above-mentioned stirring, and for this purpose, a stirring device capable of stirring and transporting at the same time is required. Inventions such as No.

The present invention provides a rotating paddle type stirring device that has the function of transporting materials in substantially the same direction by stirring, along a zigzag-shaped trajectory having components in both directions, approximately perpendicular and parallel to the material transport direction. By moving the fermenter, all the materials in the fermenter are stirred and transferred.

That is, in FIG. 3, an inlet end 1 is provided at one end of a rectangular fermenter 3, and an outlet end is provided at the opposite side. 4 is a side wall of the fermenter 3. Rails 5, 5 are provided on the outside of the side wall 4, and legs 6 are mounted on the rails 5.
is provided. A beam 7 is placed between the legs 6, 6, and together with the legs 6, 6, the rail 5,
It is now possible to run vertically on 5. 8 is a drive mechanism for vertically moving the legs 6. A transverse carriage 9 is provided on the beam 7, and an arm 1 is provided at the bottom of the transversal carriage 9.
0 is fixed. Furthermore, a rotary paddle 11 is rotatably installed at the tip of the arm 10. 12 is a drive device for horizontally moving the traversing cart 9; 13 is a drive device for the rotary paddle 11; 14 is an opening/closing door provided at the entrance end of the side wall 4; A passage 16 separated from the fermenter 3 indicates a compost discharge device.

Thus, the rotary paddle 11 moves from the outlet end 2, splashes the compost material in the fermenter 3, transfers it while stirring, and when it reaches the inlet end 1, exits the opening/closing door 14 and reaches the passage 15. By moving 15 back over the end of the side wall 4 to the part of the ejector 16 and again to the starting outlet end 2.

[Problem that the invention attempts to solve]

The opening/closing door 14 is required to have a structure that can withstand the surface pressure of the compost material deposited in the fermenter.

The mechanism is simple and requires as little space as possible.

Door opening and closing operations must be performed smoothly.

It's cheap.

etc.

The present invention aims to provide an opening/closing door for a composting fermenter that satisfies all of the above conditions.

[Means for solving problems]

In the present invention, a stirring device is moved from the outlet end to the inlet end in a fermenter in which composted material is deposited to stir and transfer the composted material, and at the end point it exits through an opening/closing door provided on the side wall of the fermenter and ferments. In a composting fermenter, the opening/closing door is divided into upper and lower halves, and the lower part is moved back through the passage formed outside the tank and composted while repeating the stirring and transfer from the exit end in the fermenter. It is characterized by a sliding door that opens and closes parallel to the side wall, and a free swinging door at the top.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 1 and 2, but the present invention is not limited to this embodiment.

In the illustrated example, the opening/closing door 14 is divided into upper and lower halves, with the lower part becoming a sliding door 20 that opens and closes parallel to the side wall 4, and the upper part becoming a free swinging door 28 that swings freely on a free hinge 27. ing.

The sliding door 20 has a rack 21 provided at the upper end of the sliding door 20 using a pinion mechanism (not shown).
A drive device 2 fixed to the wall of the inlet end 1
2, it runs parallel to the side wall 4 on a convex guide rail 23 with wheels 24 and opens and closes in a sliding manner. When the sliding door 20 is opened, a guide roller 26 stored in the door guide 25 is placed outside the fermenter.
and a guide rail 23, and the surface pressure of the compost material applied to the door when closed is controlled by a rotary roller 33 fixed to the door guide 25 near the drive device 22, and a guide fixed to the end of the fermenter side wall 4. It is supported by the piece 34 and the guide rail 23. In addition, the layer thickness of the compost material in the fermenter is usually
The diameter D of 1 is approximately 0.8 to 1.2 times, but in order to prevent the compost material from scattering outside the tank during stirring, the side wall 4
requires a height of 1.8 to 2D. Therefore, if the height of the sliding door 20 is not made equal to the side wall 4, but is designed at a height of 0.8 to 1.5D, for example 1.2D, where surface pressure is constantly applied,
The main body of the sliding door 20 is downsized and the drive motor capacity is also reduced.

Since no large surface pressure acts above the sliding door 20, the structure of the free swinging door 28 is simplified. That is, supported by the free hinge 27,
A free-swinging door 28 that does not require power and is pushed open when the rotating paddle 11 passes is installed, for example, a double door that opens only on one side or on both sides as in the illustrated example.

In the figure, 29 is a scraper that is provided at the lower end of the sliding door 20 and slides on the guide rail 23.
If it is attached to the front and rear of both wheels 24, 24 as shown in the illustrated example, the opening and closing operations can be performed smoothly without compost material getting caught in the wheels.

With this opening/closing door structure, the sliding door that must withstand the surface pressure of the compost material deposited in the fermenter can be made smaller, and the upper part can be used as a non-powered free-swinging door 28. Therefore, the driving power for the door as a whole is small, the structure is simple, the door opens and closes smoothly, and it is inexpensive.

Further, as shown in the second diagram, a leak prevention plate 30 in the shape of a semicircle slightly larger than the diameter D of the rotary paddle 11 that allows the rotary paddle 11 to pass through is provided at the lower part of the inside of the fermentation tank inside the sliding door 20. Once installed,
The piled compost material, which tends to collapse due to a small external force, is prevented from collapsing out of the door, and the amount of compost material entrained when the rotary paddle 11 moves from the door to the passage 15 can be greatly reduced.

In addition, a side wall 4 serving as a closing surface of the sliding door 20 is provided.
If a hollow space 31 (not communicating with the inside of the fermentation tank, such as by installing an iron plate inside) is formed in a part of the lower part, the compost material that falls onto the guide rail 23 when the door is opened will be removed when the door is closed. At the same time, it is pushed into the space 31 by the scraper 29, allowing the door to be sealed.

Furthermore, if the hopper 32 or chute is opened on the floor of the passage 15 in front of the sliding door 20, the compost material on the guide rail 23 can be easily transferred from the guide rail 23 to the hopper 32 on the lower surface when the door is closed. It will fall down, making it easier to close the door.

[Effect of idea]

As described above, according to the present invention, the opening/closing door at the exit of the mobile stirring device in a composting fermenter is divided into upper and lower halves, the lower part is a sliding door that can withstand the surface pressure of the composting material in the fermenter, and the upper part is a sliding door that can withstand the surface pressure of the composting material in the fermenter. By making the section a non-powered, free-swinging door, the driving power for the opening/closing door as a whole is reduced, allowing smooth opening/closing operation.
It has useful effects such as simple structure and low cost.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a side view thereof, and FIG. 3 is a perspective view of the entire fermenter having a mobile stirring device. 1... Inlet end, 2... Outlet end, 3... Fermenter,
4... Side wall, 5... Rail, 6... Leg, 7...
Beam, 8... Drive mechanism, 9... Traverse truck, 10...
Arm, 11... Rotating paddle, 12, 13... Drive device, 14... Opening/closing door, 15... Passage, 16...
...Discharge device, 20...Sliding door, 21...Rack, 22...Drive device, 23...Guide rail,
24... Wheel, 25... Door guide, 26... Guide roller, 27... Free hinge, 28... Free swinging door, 29... Scraper, 30... Leak prevention plate, 31... Blank space , 32...hopper, 33...rotating roller, 34...guide piece.

Claims (1)

[Scope of utility model registration request] A stirring device is moved from the outlet end to the inlet end in the fermenter in which the compost has been deposited, stirring and transporting the compost, and at the end point it exits through the opening/closing door provided on the side wall of the fermenter and is formed outside the fermenter. In the composting fermenter, the opening/closing door is divided into upper and lower halves, and the lower part is parallel to the side wall. An opening/closing door for a composting fermentation tank, characterized in that it is a sliding door that opens and closes, and the upper part is a freely swinging opening/closing door.