JPH0111308Y2 - - Google Patents

Description

[Detailed description of the invention] "Purpose of the invention" (Field of industrial application) The present invention is a sieve sludge cleaning device for cleaning and discharging sifter sludge in wastewater scraped up from a screen etc. in sewage treatment equipment. It is related to.

(Prior art) Conventional devices of this type generally charge sieve residue into a horizontal washing tank, wash it using a stirring device such as a pulsator, and then sequentially transport it out using a conveyor. However, there were problems in that the equipment required a large space and was structurally complex, and that cleaning was insufficient and processing took a long time.

(Problems to be solved by the invention) This invention was created in view of the above-mentioned circumstances.
The object of the present invention is to provide a sieve sludge cleaning device that is small in size, simple in structure, and has an excellent cleaning effect by solving the problems of the conventional devices described above.

(Means for solving the problem) The present invention provides a cleaning pipe using an air lift in the sieve residue storage tank, washes the sieve residue during the lift in the cleaning pipe, and removes the sieve residue from the cleaning pipe. It is characterized in that it is placed on a conveyor and transported out while being further washed.

(Example) Hereinafter, an example of the device of the present invention will be described with reference to the drawings.

In the figure, 1 is a sieve residue storage tank, and above one end of this sieve residue storage tank 1, a supply conveyor 2 for feeding sieve residue to be washed into the tank 1 is provided. Inside the tank 1, an air lift cleaning pipe 3 which is long in the vertical direction and whose lower end is opened above the bottom of the tank is erected. An air supply pipe 4 is connected to the lower part of the cleaning pipe 3, and by blowing air into the cleaning pipe 3 from the air supply pipe 4, the sieve residue in the sieve residue storage tank 1 is removed by an air lift effect. is introduced into the cleaning pipe 3 together with water and is made to flow out from the upper end.

An inclined guide plate 5 is provided at the upper part of the air lift cleaning pipe 3 to surround it, and a discharge conveyor 6 having an endless screen in the form of a screen or a net is provided above the storage tank 1. One end faces below the lower end of the guide plate 5, and a discharge gutter 7 is connected to the other end. Further, above the discharge conveyor 6, fountain nozzles 8, 8 are arranged to spray cleaning water toward the screen of the conveyor 6, and the jet nozzle 8 is provided with a supply pipe connected to a water supply source such as a water pump (not shown). 9 is connected, and a water supply pipe 10 is arranged on the sieve residue storage tank 1 to be connected to a water supply source for supplying washing water into the tank 1 as necessary.

In addition, 11 in the figure is a drain pipe provided at the upper part of the sieve residue storage tank.

(Operation) Next, the operation of the sieve residue cleaning device having the above configuration will be explained.

Tank 1 contains the required amount of cleaning water,
The sieve residue to be washed is conveyed by a supply conveyor 2 and placed into a tank 1. The introduced sieve residue is introduced from the lower end of the cleaning tube 3 along with the cleaning water as shown by the arrow by the air lift effect caused by the air blown into the cleaning tube 3 from the air supply tube 4, and rises inside the tube. It flows out onto the inclined guide plate 5 from the upper end, flows down on the guide plate 5, and falls onto the discharge conveyor 6. Inside the air lift cleaning pipe 3,
Since the sieve residue, water, and air rise at different speeds, the contaminants adhering to the sieve residue are washed and separated. Then, the sieve residue and washing water flowing out from the upper end of the air lift washing pipe 3 flow down from the guide plate 5 onto the conveyor 6, but the washing water falls from the screen of the conveyor 6 and flows into the sieve residue storage tank 1. Returning to the screen, the sieve residue is further washed on the screen by water jetted from the fountain nozzle 8, falls from the conveyor 6 into the discharge gutter 7, and is carried out of the machine.

In the above embodiment, the washing water that has flowed down to the guide plate 5 and the conveyor 6 is returned to the sieve residue storage tank 1, but since these washing water contains a large amount of pollutants, The cleaning water discharged from the air lift cleaning pipe may be discharged outside the machine without being returned to the sieve residue storage tank.

``Effect of the invention'' As explained above, the present invention provides a cleaning pipe connected to an air supply pipe in the sieve sludge storage tank, cleans the sieve sludge through the air lift action, and removes the sifter from the air lift cleaning pipe. The sieve residue and washing water are dropped onto a conveyor having an endless screen, and while the sieve residue is conveyed by the conveyor, it is again washed with jet water and discharged, so that the sieve residue can be cleaned well and efficiently. It is possible to provide a sieve sludge cleaning device that is formed vertically and compactly, requires less space for installation, has a simple structure, requires less power equipment, is easy to handle, and can be manufactured at low cost. .

[Brief explanation of the drawing]

The drawing is a side sectional view showing one embodiment of the device of the present invention. 1... Sieve residue storage tank, 2... Supply conveyor, 3
...Air lift cleaning pipe, 4...Air supply pipe, 5...
... Inclined guide plate, 6 ... Discharge conveyor, 7 ... Discharge gutter, 8 ... Spray nozzle, 9 ... Supply pipe, 10 ...
Water supply pipe, 11... drain pipe.

Claims (1)

[Scope of utility model registration request] A vertically long air lift cleaning pipe to which an air supply pipe is connected is installed in a sieve residue storage tank which is provided with a feeding means for the sieve residue to be washed above the end thereof, and a vertically long air lift cleaning pipe is installed above the sieve residue storage tank. A discharge conveyor equipped with an endless screen that receives the sieve residue flowing out from the upper end of the cleaning pipe and conveys it to the outside of the machine, and a fountain means that sprays cleaning water onto the discharge conveyor are provided. A sieve residue cleaning device characterized by: