JP2572048Y2 - Sludge cleaning system - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning sludge pipes, and in particular, when transporting sludge generated in the treatment of sewage and other industrial waste liquids, the sludge adheres to the sludge pipes and sludge pumps, and solids are formed. The present invention relates to a new improvement for intermittently flowing washing water to the inlet side of a sludge pump so as to enable washing of a sludge pipe and a sludge pump so as not to cause the sludge.

[0002]

2. Description of the Related Art In general, taking water treatment in an ironworks where a large amount of water is used as an example, main water can be roughly classified into cooling water, dust collection water and cleaning water. Of these, the collected water is not shown, but contains a large amount of suspended solids (SS), so that it is settled and separated using a flocculant with a thickener, and the treated water is recycled. . The solid solution sludge settled at the bottom of the thickener is withdrawn from the bottom of the thickener, temporarily collected in a sludge storage tank, level-controlled, transported to a sludge treatment facility by a sludge pump, and treated with sludge. .

[0003]

[Problems to be Solved by the Invention] Since the conventional water treatment equipment is configured as described above, the following problems exist. That is, the sludge accumulated in the sludge storage tank is pulled out at an appropriate interval by a sludge pump and transported to the sludge treatment facility. However, when the sludge pump is not operated, the sludge inside the sludge pump casing or the sludge Sludge had accumulated in the pipe and had adhered and solidified on the inner wall of the pipe. Due to the repetition of this processing cycle, pipe clogging and failure of the mud pump will occur in due course.Thus, various considerations such as pipe diameter, transport distance, transport interval, etc. It is difficult to avoid trouble, and every time trouble occurs, equipment must be shut down for a long time to clean or replace the sludge pipes and sludge pumps, and large repair costs are required.

[0004] The present invention has been made to solve the above problems, and in particular, by intermittently flowing washing water to the inlet side of a sludge pump, a sludge pipe and a sludge pump. It is an object of the present invention to provide an apparatus for cleaning a drainage pipe, which can automatically perform the cleaning of the wastewater.

[0005]

SUMMARY OF THE INVENTION A sludge pipe cleaning apparatus according to the present invention supplies sludge from a sludge storage tank connected to a thickener to a sludge treatment facility via a sludge pump and a sludge pipe. In a sludge pipe cleaning apparatus adapted to wash sludge transport equipment, a washing pipe connected between the sludge storage tank and the sludge pump is provided with a washing pump and a washing water control valve for adjusting washing water. Configuration.

More specifically, a treatment water pipe and a washing water tank are provided between the thickener and the washing pump.

[0007]

In the sludge pipe cleaning apparatus according to the present invention, the sludge pump is activated by the control of the level meter of the sludge storage tank.
Sludge water is transported to the sludge treatment facility. Next, the sludge water transport timer is activated, and when the transport of the sludge water is completed, the washing water control valve is opened, the suction valve of the sludge pump is closed, the washing pump is started, and the sludge is discharged into the sludge pipe. Inject water and wash. After a certain time, when the cleaning timer is activated, the cleaning pump is stopped, the discharge valve of the discharge pump is closed, and the discharge pump is stopped. The above-mentioned operation of sludge water transport and sludge pipe cleaning is intermittently operated by the level meter and timer of the sludge storage tank, and the sludge adhering to the sludge pipe during sludge water transport is automatically washed by the washing water. Is removed. Therefore, by repeating the above-described operation of transporting the sludge water and injecting the washing water, the dirt of the sludge pump and the sludge pipe can be automatically removed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail with reference to the drawings. FIGS. 1 to 3 show an apparatus for cleaning a drainage pipe according to the present invention. FIG. 1 is a block diagram, FIG. 2 is a block diagram showing another embodiment of FIG. 1, and FIG. FIG. In FIG. 1, a reference numeral 1 denotes a sludge transport facility. The sludge transport facility 1 includes a sludge storage tank 6 having a level meter 9, a sludge pump suction valve 11 connected in series to the sludge storage tank 6, and a sludge pump. 16, pressure switch 17, sludge pump discharge valve 18
And a seal water valve 10 and a seal water 8 connected to the sludge pump 16.

A thickener 2 having a first drive unit 3 is connected to the sludge storage tank 6 through a sludge water pipe 4 having a valve 5, and the sludge from the sludge pipe 15 is supplied to a second drive unit. 3a, and a cleaning pipe 14 is provided in a sludge pipe 15 between the sludge pump suction valve 11 and the sludge pump 16.
Are connected in a T-shape. A cleaning pump 12 for supplying the cleaning water 7 and a cleaning water control valve 13 are connected in series to the cleaning pipe 14.

[0010] In another embodiment shown in FIG.
As the washing water 7, the treated water from the thickener 2 is passed through a treated water pipe 20 to a washing water tank 2 having a level meter 9 a.
The cleaning water 7 in the cleaning water tank 21 is sent by the cleaning pump 12.
The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

Next, the operation of the above configuration will be described with reference to the sludge water transport flow of FIG. First, the level meter 9 of the sludge storage tank 6 becomes high (first step 30) and the sludge pump 1
The opening of the seal water valve 10 and the opening of the exhaust pump suction valve 11 of AN
At D (second step 31), the sludge pump 16 is started (third step 32), and when the pressure switch 17 at the outlet of the sludge pump 16 is operated (fourth step 33), the discharge valve 18 of the sludge pump is opened. (Fifth step 34), the sludge water is transported to the sludge treatment facility 19 (Sixth step 35). After a certain period of time, the sludge water transport timer T is activated (seventh step 36).
3 is opened (eighth step 37) and the mud pump suction valve 1
1 is closed (ninth step 38), and then the cleaning pump 1
2 is started (tenth step 39), washing water is fed into the drainage pipe 15, and washing is performed (eleventh step 40).
After a certain time has elapsed, the cleaning timer T _S operates (first
2 step 41), the washing pump 12 stops (13th step 42), the sludge pump discharge valve 18 closes (14th step 43), and the sludge pump 16 stops (15th step 44).

Next, the operation of transporting the sludge water and the operation of cleaning the drainage pipe are performed by the level meter 9 of the sludge storage tank 6 and the drainage pump 1.
By 6 and the control timer T _C of the washing pump 12 intermittently operates, automatically removes the sludge adhered to the sludge water transported to the waste sludge pipe 15 and the sludge pump 16 by the cleaning water 7.

In another embodiment shown in FIG. 2, the above-mentioned washing water 7 is obtained from the thickener 2, and the other operations are the same as those described above, and therefore will not be described.

[0014]

[Effect of the Invention] In the sludge pipe cleaning apparatus according to the present invention, the washing water pipe is connected to the sludge pipe of the sludge transport equipment equipped with the sludge pipe and the sludge pump so that the washing water is arbitrarily DC-input. After the sludge pump is stopped, the washing water can be automatically flowed into the sludge transport equipment, and the sludge adhering to the sludge piping and the sludge pump can be washed away. Therefore, there is no need to stop the equipment, it can withstand a long operation, and the life of this kind of equipment can be greatly extended.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a device for cleaning a drainage pipe according to the present invention.

FIG. 2 is a configuration diagram showing another embodiment of FIG. 1;

FIG. 3 is a flow chart of sludge water transportation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sludge transport equipment 2 Thickener 6 Sludge storage tank 7 Cleaning water 12 Cleaning pump 14 Cleaning piping 15 Drainage piping 16 Drainage pump 19 Sludge treatment equipment 20 Treatment water piping 21 Cleaning water tank

Claims (2)

(57) [Scope of request for utility model registration] 1. A sludge storage tank (6) connected to a thickener (2).
Sludge transport equipment that supplies sludge from the plant to sludge treatment equipment (19) via a sludge pump (16) and a sludge pipe (15)
In the apparatus for cleaning sludge pipes designed to perform the washing of (1), a washing pump (12) and washing water are supplied to a washing pipe (14) connected between the sludge storage tank (6) and the sludge pump (16). An apparatus for cleaning a drainage pipe, comprising: a cleaning water control valve (13) for adjusting (7). 2. The sludge according to claim 1, wherein a treated water pipe (20) and a washing water tank (21) are provided between the thickener (2) and the washing pump (12). Plumbing cleaning device.