JPH0741279B2 - Sludge dewatering equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sludge dewatering apparatus in which an organic sludge and a dewatering agent are charged into a rotary drum, and the mixture is stirred and dehydrated and dried.

[0002]

2. Description of the Related Art Conventionally, in a sludge-like waste dryer,
Contact or close to the annular inner surface of the sludge inflow side end of the rotating drum
Providing a sludge scraping plate in contact with each other is described in JP-A 1-1.
It is disclosed in Japanese Patent No. 23700 .

[0003]

DISCLOSURE OF THE INVENTION In the above prior art,
The sludge that has flowed into the rotating drum has an annular inner surface at the inflow end.
And attached to the peripheral portion of the circular end surface that is in contact with the annular inner surface.
However, the above-mentioned conventional technique adheres to the annular inner surface of the inflow side end.
It is designed to remove only sludge that has
It is not designed to remove sludge attached to the sides . Obey
The sludge attached to this part gradually accumulates,
Accumulate even at the inflow port, block the inflow of sludge, and stir
・ There was a problem that the transportation was not smooth .

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems, and a large number of screw blades are spirally arranged and fixed on the inner peripheral surface of a rotary drum, and the inlet of the rotary drum is fixed. In a sludge dewatering apparatus in which a plate is provided with a sludge inlet and a dehydrating agent inlet and an outlet screw is disposed on the outlet side, an arm base is fixed to an inlet side fixed plate, and the arm tip is fixed.
Fix the scraping plate at one end, and insert one side of the scraping plate into the inlet of the rotating drum.
Abutting on the side inner end face peripheral part, the other side to the inner peripheral surface corner peripheral part
It is characterized by abutting .

[0005]

Embodiments will be specifically described below based on the illustrated embodiments. Reference numeral 1 is a rotary drum, and rings 5 and 6 of the rotary drum 1 are mounted on wheels 3 and 4 arranged on a base 2 in the front and rear. The front plate 7 of the rotary drum 1 is provided with a circular hole 8 concentric with the rotary drum shaft, and an outlet fixing plate 9 is abutted and sealed in the circular hole 8. 10 is a pulley integrated with the front side plate 7, which is a base 2
A belt 11 is driven by a motor 11 provided in the. The outlet fixing plate 9 is a gutter 13 that connects the inside of the rotary drum 1 to the outside, and a discharge screw 14 is arranged. A belt 16 is provided by a forward / reverse rotation motor 15 provided on the base 2.
It is designed to be driven by.

Reference numeral 18 denotes a rear plate of the rotary drum 1, which is provided with a circular hole 19 concentric with the rotary drum shaft, and an inlet fixing plate 20 is abutted and sealed in the circular hole 19. 21 is a sludge charging hopper,
Reference numeral 22 denotes a sludge charging screw, the shaft tip of which projects from the opening 40 of the inlet fixing plate 20 and is supported by a bearing 42 at the tip of an arm 41 fixed to the inlet fixing plate 20. 23
Is a well-known dehydration treatment agent charging hopper, and 24 is a dehydration treatment agent charging screw, the shaft tip of which projects from the opening 40 of the inlet fixing plate 20 and is supported by the bearing 45 at the tip of the arm 44 fixed to the inlet fixing plate 20. The motors 25, 26 provided on the base 2 are driven by belts 27, 28. Reference numeral 29 denotes an opening / closing lid of the rotary drum 1. Agitation blades 30 and 31 and screw blades 32 are fixed to the inner surface of the rotary drum 1.

Reference numeral 46 denotes a scraping plate arm whose base is fixed to the inlet fixing plate 20 and is arranged obliquely downward. At the tip, the peripheral portion 1a of the inner side end face of the rotary drum 1 in the right direction of the arrow and the inner side of the inlet side. Sides 47a and 47b that abut the peripheral portion 1b of the peripheral surface
A scraping plate 47 having a square shape is fixed.

Next, the operation will be described. The sludge from the sludge charging hopper 21 is continuously charged into the rotary drum 1 from the opening 40 of the inlet fixing plate 20 by the sludge charging screw 22 rotated by the motor 25, and the cement type or lime type sludge is supplied from the dehydrating agent charging hopper 23. The dehydration treatment agent is rotated by a motor 26.
Thus, it is continuously charged into the rotary drum 1 through the opening 40 of the inlet fixing plate 20.

Air is also sent in by a device (not shown). The rotary drum 1 is rotating in the right direction of the arrow. The sludge and the dehydrating agent that have fallen into the rotating drum 1 generate heat when they first meet and are in a state where they are most likely to adhere, and the inlet-side inner end surface peripheral portion 1a and the inlet-side inner peripheral surface corner peripheral portion 1 of the rotating drum 1
Although attached to b, the sides 47a and 47b of the scraping plate 47 are dropped from below into the scraping rotary drum 1. In this way, the sludge and the dehydrating agent are not deposited on the inlet inner end surface and the inner peripheral surface corner of the rotary drum 1.

The rotating drum 1 is 5 to 10
It rotates at r.p.m., is gradually sent forward by the screw blades 32, drops on the gutter 13 in order, and is discharged to the outside of the rotary drum 1 by the discharge screw 14 rotated by the motor 15.

[0011]

According to the present invention, a large number of screw blades are spirally arranged and fixed on the inner peripheral surface of a rotary drum, and a sludge charging port and a dehydration treating agent charging port are provided on an inlet fixing plate of the rotating drum. at a dehydration treatment apparatus of the sludge which is disposed the discharge screw outlet, the arm base is fixed to the inlet-side fixed plate, 該A
A scraping plate is fixed to the end of the dome, and one side of it is a rotating drum.
Abutting on the periphery of the inner end face of the
Since the sludge is brought into contact with the sides, the sludge and dewatering agent sent into the rotating drum first encounter each other to generate heat, and scrape off in the most adhering state. Therefore, the mixture of sludge scraped off and the dehydration treating agent does not adhere to the rotary drum and can be smoothly stirred and conveyed.

[Brief description of drawings]

FIG. 1 is a cutaway front view of an essential part of an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a right side view of FIG.

FIG. 4 is a perspective view of an inner end surface, an inner peripheral surface and a scraping plate portion of the rotating drum of the present invention.

[Explanation of symbols]

 1 Rotating Drum 1a Inlet-side Inner End Surface Peripheral 1b Inlet-side Inner Surface Corner Peripheral 20 Entrance Fixing Plate 21 Sludge Injecting Hopper 22 Sludge Injecting Screw 23 Dehydrating Agent Injecting Hopper 24 Dehydrating Agent Injecting Screw 40 Inlet Fixing Plate Opening Part 41 Arm fixed to inlet fixing plate 46 Scraping plate arm 47 Scraping plate 47a Two sides of scraping plate 47b Two sides of scraping plate

Claims (1)

[Claims] 1. A large number of screw blades are spirally arranged and fixed on an inner peripheral surface of a rotary drum, a sludge charging port and a dehydrating agent charging port are provided on an inlet fixing plate of the rotating drum, and a discharge screw is disposed on an outlet side. In the sludge dewatering device with the installed, the arm base is fixed to the inlet side fixing plate and scraped off at the arm tip.
Fix the back plate, and connect one side to the inner end face circumference of the inlet side of the rotating drum.
Abutting on the side part and the other side on the peripheral part of the inner peripheral surface corner
A sludge dewatering device characterized by the above .