JPS6327763Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a filtration device for a sludge water treatment vehicle that sucks sludge water from a septic tank, etc. at the location where the septic tank is located, coagulates and separates solid and liquid, and returns the separated superfluous water to the septic tank, etc. This invention relates to a device for preventing flock breakage in the field.

The flocs obtained by flocculating sludge water from septic tanks, etc. (the charge (-) of the colloid of underwater sludge and the charge (+) of the flocculant molecules are neutralized, and the sludge colloids are drawn together (cross-linking phenomenon), forming sponges. The flocs are easily destroyed when the primary treated water containing the flocs is introduced from the inlet pipe into a filtration device mainly consisting of a horizontal rotary screen cylinder. When the flocs are destroyed, the solid content in the sludge water that has coagulated as flocs is not separated in the filtration device but enters the filtration water and is returned to the septic tank, etc., making the solid-liquid separation of the sludge water in the septic tank more efficient. There is a risk that the vehicle will not be able to perform properly and will not be able to fulfill its purpose as a sludge water treatment vehicle.

The present invention provides a floc destruction prevention device in a filtration device for a sludge water treatment vehicle that avoids the above-mentioned concerns.

That is, the floc destruction prevention device in the filtration device of a sludge water treatment vehicle of the present invention mainly consists of a horizontal rotating screen tube through which primary treated water containing flocs obtained by coagulating sludge water from a septic tank is introduced from a pipe. A device for preventing the destruction of the floc when introducing the floc into the inside of a filter device, the tip of the introduction pipe being curved downward, and the tip of the introduction pipe and the rotary screen being connected to each other. A buffer portion is provided between the tube and the inner surface to buffer the flow of the primary treated water containing the flocs from the tip to the inner surface.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the floc destruction prevention device in a filtration device for a sludge water treatment vehicle according to the present invention will be described below as shown in the drawings.

FIG. 1 shows a side view of a sludge water treatment vehicle equipped with an embodiment of the present invention.
is a hose reel, and in order to treat sludge water in a septic tank, etc. with such a sludge water treatment vehicle, a suction and drainage hose (not shown) is let out from the hose reel 1 and inserted into the septic tank, etc. The sludge water is transferred to the sludge water treatment tank 2 via the above-mentioned suction and drainage hose.
At the same time, before and after this, a predetermined amount of flocculant is sucked into the sludge water treatment tank 2 from the flocculant liquid tank 3, and the sludge water and flocculant liquid are stirred in the sludge water treatment tank 2. (not shown) to obtain the primary treated water containing flocs, which is then pumped to the filtration device 4 for solid-liquid separation, and the separated sludge is discharged into the sludge tank 5 while separating The excess water that has been removed may be sucked into the excess water tank 7 through the excess water receiving portion 6, and the excess water in the excess water tank 7 may be returned as water to a septic tank or the like via the drainage hose. When the sludge tank 5 is full of sludge, it is disposed of in a sewage treatment plant.

As shown in FIG. Screen tube 4
A spiral blade 41 is fixedly installed and extruded from one end 40a of the wire toward the other end 40b. 42
The rotary screen cylinder 40 is supported by rollers 43,
43,... is a housing that is open at the front and the bottom, and is located above the overwater receiving part 6, and its rear end is pivotally supported, and its front end is used for a hydraulic cylinder, etc. It is connected to the upper end of the lifting device 8. This elevating device 8 allows the rotary screen tube 40 to be lifted up and down at the other end 40b via the housing 42 by its operation, and when treating sludge water on a slope, the rotary screen tube 40 is tilted and the solid liquid is This is to prevent separation efficiency from decreasing. Reference numeral 9 denotes an introduction pipe for primary treated water (sludge water), which communicates with the sludge water treatment tank 2 and has its tip 9' inserted into one end 40a of the rotary screen tube 40. In addition, 44, 44, . . . are cleaning nozzles for cleaning the rotary screen cylinder 40 and preventing its clogging. Further, 45 is a drive motor for the support roller 43.

As shown in FIG. 4, the floc destruction prevention device in the filtration device for a sludge water treatment vehicle of the present invention is formed by bending the tip end 9' of the introduction pipe 9 downward, and as shown in FIG. Between the tip 9' of the introduction pipe 9 and the inner surface of the rotary screen cylinder 40, the primary treated water containing flocs obtained in the sludge water treatment tank 2 is transferred from the tip 9' to the inner surface. A buffer section 10 is provided to buffer the inflow into the tank. Note that the fact that the tip 9' is curved downward means that the primary treated water passage inside the introduction pipe 9 gradually points downward at the tip 9'. Tip 9'
does not necessarily mean that it protrudes downward.

To describe the embodiment in detail, the buffer section 10
is in the shape of a conical (truncated) cylinder, and is located within one end 40a of the rotary screen cylinder 40, and its large diameter portion is connected to the other end 40a of the rotary screen cylinder 40.
It is fixed to a rotary screen tube 40 facing in direction b.

According to the floc destruction prevention device of the present invention having the above configuration, the primary treated water containing flocs, which is pumped from the sludge water treatment tank 2, smoothly flows downward in the flow direction at the tip 9' of the introduction pipe 9. Since the primary treatment water moves into the rotary screen cylinder 40 without being subjected to impact along the buffer section 10, there is no risk of the flocs in the primary treatment water being destroyed. If the tip of the introduction pipe 9 is closed and a discharge section for the primary treated water is provided below it, there is a risk that the flocs will collide with the closed section and be destroyed. Furthermore, if the buffer section 10 is not provided, the primary treated water will directly flow down from the introduction pipe 9 into the rotary screen cylinder 40, and there is a risk that the flocs will be destroyed by the impact.

As described above, the primary treated water introduced into the rotary screen tube 40 without destroying the flocs is separated into solid and liquid by the screen surface of the rotary screen tube 40. In this case, since the flocs are not destroyed, the solid-liquid separation efficiency can be sufficiently increased. The separated overwater flows down or drips from the rotary screen tube 40 into the overwater receiving section 6 below, and is sucked from the overwater receiving section 6 into the overwater tank 7 as described above. On the other hand, the separated sludge is pushed out by the spiral blade 41 and falls from the other end 40b of the rotary screen cylinder 40 and is stored in the sludge tank 5 below.

In the embodiment, the buffer section 10 is fixed inside the rotary screen tube 40, but as shown in FIG.
You may also do so. In addition, in the embodiment, the buffer section 1
0 is fixed to the rotary screen tube 40,
On the contrary, it is also possible to fix it to the introduction pipe 9, and in that case, it is also possible to configure the buffer section 10 with a simple inclined plate.

As described above, according to the floc destruction prevention device in the sludge water treatment equipment of the present invention, the tip of the introduction pipe inserted into the rotary screen tube is curved downward, and Because the buffer section is provided, the primary treated water containing flocs can flow down from the tip of the introduction pipe to the inner surface of the rotary screen cylinder without impact, preventing the flocs from being destroyed, and as a result, the septic tank, etc. Outstanding effects can be achieved, such as the ability to effectively carry out maintenance and management.

[Brief explanation of the drawing]

Fig. 1 is a side view of a sludge water treatment vehicle equipped with an embodiment of the present invention, Fig. 2 is a perspective view of the filtration device from diagonally from the front, Fig. 3 is a perspective view from diagonally from the rear, and Fig. 4 The figure is a sectional view thereof, and FIG. 5 is a sectional view of another embodiment of the present invention. 4...Transfer device, 9...Introduction pipe, 9'...
Tip part, 10...Buffer part, 40...Rotary screen tube.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) When primary treated water containing flocs obtained by coagulating sludge water from a septic tank, etc. is introduced from an inlet pipe into a filtration device mainly consisting of a horizontal rotary screen tube. A device for preventing destruction of said flock, which is formed by curving the tip of said introduction pipe downward, and said said flock is provided between said introduction pipe tip and an inner surface of said rotary screen tube. A device for preventing floc destruction in a filtration device of a sludge water treatment vehicle, which is provided with a buffer portion for buffering the flow of primary treated water containing flocs from the tip portion to the inner surface. (2) The buffer section is shaped like a conical tube, and is positioned within one end of the rotary screen tube, with its large diameter section facing the other end of the rotary screen tube and the introduction. A floc destruction prevention device in a filtration device of a sludge water treatment vehicle as set forth in claim (1) of the utility model registration, which is fixed to either one of the pipes. (3) A device for preventing floc destruction in a filtration device for a sludge water treatment vehicle as set forth in claim (1) of the utility model registration claim, wherein the buffer portion is composed of an inclined plate and is fixed to the introduction pipe. .