JPS581607B2 - Chinsakaki Yoseki - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention utilizes a sand pump that collects sediment that has settled at the bottom of a sedimentation basin by means of a screw at the lower end of a support shaft that is pivotably pivoted at the bottom of a trolley that moves along a sedimentation basin. This relates to the improvement of the sand raking machine that sends sand to the required areas.

That is, the present invention makes the rotary shaft of the above-mentioned scraper equipped with a screw hollow, so that pressurized water can be fed into the inside of the rotary shaft, and the pressurized water is injected from a large number of water injection holes formed in the peripheral wall of the rotary shaft. At least the sand in a portion of the screw is stirred so that suction by the sand pump can be carried out efficiently.The details are as follows.

In the figure, 1 is a sand settling basin installed in the middle of the waterway, and wheels 4 are installed on both sides of the trolley 30 on the rails 2 on both sides of the upper part of the basin.
is placed thereon, and by driving these wheels 4, the trolley 3 can freely move forward and backward.

Reference numeral 5 denotes a support frame whose upper end is pivotally connected to the lower part of the truck 3 by a shaft 6 so as to be able to swing in the moving direction of the truck 3;
As shown in the figure, the overhang part 7 is open to the left and right, and its lower end is the fifth
As shown in the figure, the suction portion 8 is shaped like a downward gutter and extends over the entire width.

A rotary shaft 100 is rotatably supported at both ends by bearings 9 on both sides of the suction portion 8, and screws 11 and 12 twisted in opposite left and right directions are fixed to this shaft 10.
1 and 12 facing the opening of the suction part 8 on the front side.

Further, the bearing portion 9 is provided with wheels 13 that are in contact with the bottom surface of the sedimentation tank 1 to separate the screws 11 and 12 from the bottom surface.

14 is a submersible sand pump fixed to the support frame 5; a suction pipe 15 leading to its suction port is connected to the center of the upper part of the suction section 8; It is connected to the discharge pipe 17, and the pipes 16 and 17 are connected by flexible pipes at the pivot point of the support frame 5 so that the swinging of the support frame 5 is not hindered.

Further, as shown in FIG.
, 12 is driven in the direction in which the sand in contact with the sand is raked to the center.

Further, the rotary shaft 10 is hollow and both ends thereof are closed, and a large number of water ejection holes 19 are formed in the peripheral wall.

20 in FIG. 3 is a pressure water supply device, and in the illustrated example, the rotating shaft 1
A pressure water supply pipe 21 is connected to the rotating shaft 10 in a portion facing the inside of the ring-shaped pressure water supply device 20. An inlet 22 is formed so that the pressurized water supplied from the water supply pipe 21 into the device 20 is supplied from the water inlet 22 into the rotating shaft 10 and is ejected from each jet hole 19 around the rotating shaft 10. The jet holes 19 are formed in the tangential direction as shown in FIG.

23 in the figure is a machine room on the trolley 3. A hydraulic unit and a hoisting machine are installed inside the machine room, and a rope 24 operated at the hoisting rock is connected to the support frame 5. It is designed so that it can be raised.

The present invention is as described above, and as shown in FIG. 2, the wheels 13 rest on the bottom of the sedimentation basin 1 with the support frame 5 in its lowest position.

In this state, the pump 14 and rotating shaft 10 are operated, and the trolley 3
When the sedimentation basin is moved in the direction of the arrow in Figure 2 (the sedimentation basin is longer to the left in Figure 2), the sediment that has settled at the bottom is scraped up to the center by the left and right screws 11 and 12, and is sucked in by the action of the pump 140. It is sucked into the pipe 15, passes through the discharge pipe 16, and then exits the discharge pipe 1.
It is discharged from 7.

Although not shown, a carry-out trough is arranged along the rail 2, and the outlet of the discharge pipe 17 faces the top of this trough, so that the sand sucked up will be inside the carry-out trough no matter where the cart 3 is located. It is designed to be ejected.

When the trolley 3 moves over the entire length of the sand sink by the above operation,
Reverse the trolley 3 and return it to its original position, but at this time the support frame 5
It would be better to raise it slightly.

Therefore, in the present invention, while the screws 11 and 12 are rotated to scrape off sediment as described above, the pressure water supplied from the pressure water supply device 20 into the rotating shaft 10 is jetted out from each water jet hole 19. As a result, the sand and sludge that has settled down are stirred up by this gushing water, and the lumps are broken into powder and easily sucked into the suction pipe 15, so that the sand and sludge that has settled down can be efficiently sucked up. It is sucked into the tube 15.

As described above, in the present invention, the sand scraping action is efficiently performed by both the scraping action by the screws 11 and 12 and the stirring and crushing action by the water jet.

[Brief explanation of the drawing]

Fig. 1 is a front view of the raking machine of the present invention, Fig. 2 is a side view of the same as above, Fig. 3 is an enlarged longitudinal sectional front view showing one end of the suction part, and Fig. 4 is an enlarged longitudinal sectional view showing the other end of the suction part. The front view and FIG. 5 are enlarged longitudinal sectional side views of the same upper part. 1...Sand basin, 3...Dolly, 5...Support frame, 10...Rotating shaft, 1
1.12...Screw, 14...Submersible sand pump, 19
...Water spout hole, 20...Pressure water supply device.

Claims (1)

[Claims] 1. A trolley that runs along the sand settling basin is installed above the settling basin, and the lower end of a support frame that can be raised and lowered is attached to a rotating shaft perpendicular to the direction of movement of the trolley. A screw is installed at a predetermined portion of the support frame to collect the sediment, etc., which has settled on the bottom of the sand settling basin, into a predetermined portion. In a sand scraper equipped with a sand pump, the rotary shaft is hollow and a pressure water supply device is provided for supplying pressurized water into the rotary shaft, and pressurized water is jetted onto the peripheral wall of the rotary shaft. A sand raking machine characterized by forming a large number of water injection holes for stirring the sand in a portion of the screw.