JPH0114664Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a steel fermenter for small-scale micro-enterprises.

(Prior Art) Conventionally, fermenters used for compost production, waste sludge treatment, etc. have been made of concrete or framed with wooden panels. Therefore, they are inferior in durability and strength, break down in about two to three years, and are complicated to construct.
In particular, because the forced air supply from the outside could not be properly adjusted, the position of the fermentation high temperature (approximately 90℃) zone could not be adjusted as desired, and the forced fermentation function was forced to deteriorate. It was hot.

(Technical Issues) Therefore, this invention aims to increase the strength and durability of the steel structure of the steel panel, and also to easily adjust the position of the fermentation high temperature zone to enhance the fermentation function. This will be a major issue.

(Technical Means) This invention was made to solve the above-mentioned technical problem, and an embodiment thereof will be described below with reference to the drawings.

1 has a plurality of transport feeders 2 formed with an air circumferential chamber 10 of an upper narrow tapered inner wall 9 having a large number of air injection holes 11 surrounding the upper outer periphery excluding the front surface.
A, 2b, ... 2d are installed in a plurality of divided air chambers 7a, 7b, which have a large number of air injection holes 8 at the bottom.
This is a steel panel assembly type lower tank formed with... In the lower tank 1, the upper tapered inner wall 9, which is the inner wall, is made of a stainless steel panel, and the other outer walls are made of steel plate panels. Further, the upper finely tapered inner wall 9 is a truncated quadrangular pyramid cylinder that is successively converged upward at a taper angle of about 3 degrees, and the lower tank 1 is a double-walled cylinder with the air circumferential chamber 10. It is an assembly type that can be disassembled into an upper part and a lower part. Note that 4 is the frame 3 at the rear of the lower tank 1.
A motor provided above is connected to the same speed reducer 5, and allows each of the four conveyance feeders 2a to 2b to rotate in the directions of the arrows through a spur gear transmission mechanism 6. And each transport feeder 2a, ~2
b are each provided with an outer ribbon screw in the screwing direction so that the compost at the inner bottom of the lower tank 1 can be conveyed in the forward direction of the arrow by rotation in the direction of the arrow. Next, reference numeral 12 denotes a steel panel assembly type upper tank in which an air circumferential chamber 15 of an upper narrow tapered inner wall 13 with a large number of air injection holes 17 surrounding the outer periphery is formed. The upper tank 12 has a tapered inner wall 13 (stainless steel panel) having the same taper angle as the tapered inner wall 9 of the lower tank 1, and an outer cylindrical wall 14 (made of steel) of an air circumferential chamber 15 that can be fitted onto the outer peripheral surface of the tapered inner wall 13 (stainless steel panel). (made of panels). The upper tank 12 having the above structure is connected to the lower tank 1 as shown in FIGS. 1 and 2.
It is assembled into one piece with bolts and nuts 16 on the top. Note that 19 is a belt conveyor provided in the pit 18 in front of the lower tank 1. However, in this invention, the air pipe 25 from a pneumatic unit such as a blower branches into various manifolds via the original valve 24 on the way, and on the other hand, each valve 20a, 20b,...20d
The air chambers 7a, 7b, . . .
7d, and on the other hand, it branches off via a valve 23 and communicates with the air circumferential chamber 15 of the upper tank 12 and the air circumferential chamber 10 of the lower tank 1 via valves 21 and 22, respectively.

(Function and Effect) First of all, as mentioned above, this invented fermenter has a steel structure made of steel panels consisting of an upper tank 12 and a lower tank 1, so it is different from conventional concrete block construction or wooden panel composition type. It has the remarkable effect of being superior in strength and durability in comparison. In particular, an air circumferential chamber 10 of an upper thin tapered inner wall 9 with air injection holes 11 surrounding the upper outer periphery excluding the front surface is formed, and a plurality of transport feeders 2a, 2b...
A lower tank 1 has a plurality of divided air chambers 7a, 7b, .
It consists of an upper tank 12 in which an air circumferential chamber 15 of an upper thin tapered inner wall 13 is formed, and each air circumferential chamber 10,
15 and each of the compartments 7a, 7b, . . . are connected to manifolds with air pipes from the pneumatic unit by intervening valves respectively, so that the forced supply of oxygen into the fermenter is not only from below as in the past, but also from the outer periphery. Oxygen can be supplied from the side forcibly, which greatly supports fermentation, and since the air chambers 7a, 7b, etc. at the bottom of the lower tank 1 are each provided with a valve, oxygen can be supplied from the bottom of the tank. The valves can be adjusted as appropriate depending on the degree of fermentation in each zone in the tank, which has excellent effects such as promoting even fermentation. Furthermore, the position of the fermentation high-temperature zone, which is preferably located at a position of about 70 to 80% of the depth from the bottom of the fermenter, can be adjusted by adjusting the position of each valve in each compartment air chamber 7a, 7b and each air circumferential chamber 10, 15. It can be freely and easily variably adjusted by injecting air from below and from the sides of the outer periphery by appropriately operating each valve, and the clogging of the air injection holes 8 in each compartment air chamber 7a at the bottom can be removed by concentrated air injection. It has the advantage of being easy to open. In addition, in this fermenter, since the inner walls are tapered inner walls 13 and 9, the internal pressure distribution due to the angle of repose (internal friction angle) of the compost is made good, and when the compost is fed out, the upper layer of compost is uniformly and reliably lowered. There is an effect that can be done. The diameter of each air injection hole is preferably about 2 mmφ, and it goes without saying that the area of the blower's discharge port is larger than the total discharge area of all the air injection holes.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention,
FIG. 1 is a vertical side view, FIG. 2 is a partially cutaway vertical rear view, and FIG. 3 is a cross-sectional plan view. 1... Lower tank, 2a to 2d... Conveyance feeder,
3...Frame, 4...Motor, 5...Reducer, 6...Spur gear transmission mechanism, 7a to 7d...Air compartment, 8...Air injection hole, 9...Top tapered inner wall, 10... ... Air circumference chamber, 11 ... Air injection hole, 1
2...Upper tank, 13...Tapered inner wall, 14...Outer cylinder wall, 15...Air circumferential chamber, 16...Bolt nut, 17...Air injection hole, 18...Pit, 19
...Belt conveyor, 20a-20d, 21-2
3...Valve, 24...Original valve, 25...Air pipe.

Claims (1)

[Scope of utility model registration request] An air circumferential chamber 10 is formed in an upper narrow tapered inner wall 9 with a large number of air injection holes 11 surrounding the upper outer periphery excluding the front surface, and a plurality of transport feeders 2a, 2 are formed.
A steel panel assembly type lower tank 1 is formed with a plurality of partitioned air chambers 7a, 7b, . It consists of an upper tank 12 of a steel panel assembly type in which an air circumferential chamber 15 of an upper narrow tapered inner wall 13 with a diameter of 17 is formed, and each air circumferential chamber 10,1
5 and each compartment air chamber 7a, 7b, . . . are each equipped with a valve, and air pipes from a pneumatic unit are connected to a manifold.