JPS581608B2 - Chinsakakiyoseki - 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 sediment basin using a screw at the lower end of a support frame that is pivotally mounted on the bottom of a cart that moves along a sediment basin. This relates to the improvement of the sand raking machine that sends sand to the required areas.

That is, the present invention provides a pipe at the front lower edge of the downward gutter-like cover that covers the screw of the scraper, and the water is ejected from a large number of injection holes arranged in this pipe, and the water is ejected from both sides of the cover. The jet of water from the injection nozzle installed at the front of the wheel stirs and removes the sediment and sludge at the bottom of the sedimentation tank before the screw moves forward, making it easier for the screw to move forward. 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 3 on 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 the lower part is the sixth
As shown in the figure, the cover 8 is shaped like a downward gutter.

Both ends of a rotating shaft 10 are rotatably supported by bearings 9 on both sides of the cover 8, screws 11 and 12 twisted in left and right opposite directions are fixed to the shaft 10, and the lower parts of the screws 11 and 12 are fixed to the shaft 10. The front side faces the opening of the cover 8.

In addition, wheels 13 are provided on both bearings 9, respectively, in contact with the bottom surface of the sedimentation basin 1 and for floating the screws 11, 12 from the bottom surface.

Reference numeral 14 denotes a submersible sand pump fixed to the support frame 5. A suction pipe 15 leading to the suction port of the submersible sand pump is connected to the upper center of the suction port, and a discharge pipe 16 connected to the discharge port of the pump 14 is connected to the pump on the cart 3. The pipes 16 and 17 are connected to the discharge pipe 17 at the pivot point of the support frame 5 by a flexible pipe so that the swinging of the support frame 5 is not hindered.

The shaft 10 is driven by a hydraulic motor 18 provided on the outside of one of the bearings 9, as shown in FIG.
．． It is driven in the direction in which the sand in contact with 12 is raked up to the center.

Further, the rotary shaft 10 is hollow and both ends thereof are closed, and a large number of water injection holes 19 are provided in the same wall, and a pressure water supply device 20 provided at one end of the shaft 10 has a pressure water supply pipe 21.
The pressurized water supplied from the pipe 21 into the device 20 enters the shaft 10 and is ejected from each injection hole 19 into the surrounding area.

As shown in FIG. 6, the cover 8 has a rear edge very close to the bottom surface of the sedimentation tank 2, and a front edge quite far from the bottom surface, to which a lateral pipe 22 is fixed.

A large number of injection holes 23 are arranged in a row at appropriate intervals in the lower inner part of the pipe 22, and although not shown, the pipe 22
Royal water supply pipes are connected to both sides of the pipe 22 to supply royal water into the pipe 22, and the royal water is injected from each injection hole 23 toward the front and lower side of the screws 11 and 12.

Reference numeral 24 denotes a pair of left and right injection nozzles fixed near both sides of the cover 8, the lower end openings of which face the lower front side of the left and right wheels 13.

A pressure water supply pipe 25 is connected to each of the nozzles 24,
Royal water is sprayed onto the bottom surface of the settling tank in front of the wheels 13.

In the figure, reference numeral 26 denotes a machine room on the trolley 3. A hydraulic unit and a hoisting machine are installed inside the machine room, and a rope 27 operated by this hoisting machine is connected to the support frame 5. 5 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 it advances in the direction of the arrow in Fig. 2 (the sedimentation tank is long to the left in Fig. 2), the left and right screws 11 and 12 scrape the sediment that has settled at the bottom to the center, and the pump 14 is fed. It is sucked into the suction pipe 15, passes through the discharge pipe 16, and enters 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 cart 3 is moved over the entire length of the sand settling basin by the above operation, the cart 3 is moved backwards and returned to its original position. At this time, it is preferable to slightly pull up the support frame 5.

Further, in the illustrated example, high-pressure water is ejected from a large number of injection holes 19 of the rotating shaft 10 to stir up precipitated sand and sludge, and crush any lumps so that they can be easily sucked into the suction pipe 15.

Therefore, in the present invention, high-pressure water is injected from the many injection holes 23 of the pipe 22 provided at the front edge of the cover 8 toward the front and lower sides of the screws 11 and 12. Screw 11, 1 together with the water
The sand, sludge, etc. in the front part of No. 2 are stirred and pulverized, and the raking operation by the screws 11 and 12 becomes easy.

In addition, the high-pressure water injected from the nozzle 24 to the front lower part of the wheel 13 removes sediment, etc. from the bottom of the sedimentation tank at the front of the wheel 13, making it easier for the wheel 13 to move forward.
．． This has the effect that the guidance of 12 is performed extremely accurately.

[Brief explanation of drawings]

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 section, Fig. 4 is a partially longitudinal sectional side view of the same as above, FIG. 5 is an enlarged longitudinal sectional front view showing the other end of the suction part, and FIG. 6 is a longitudinal sectional side view of the same. 1...Sand settling basin, 3...Dolly, 5...Support frame, 8...Cover, 1゜1, 12...Screw, 14...Submersible sand pump, 22
...Pipe, 23...Injection hole, 24...Injection nozzle.

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 in a predetermined part of the support frame to collect the sediment, etc., which has settled on the bottom of the sand settling tank, into a predetermined part. In a sand scraper equipped with a sand pump, a downward gutter-like cover is provided that runs from the rear side of the screw to the upper side and ends at the middle of the front part of the support frame. A pipe is provided, a pressure water supply pipe is connected to this pipe, and a number of injection holes for injecting pressure water toward the front and lower side of the screw are arranged in a row on the inner side of the lower side of the pipe, and the gutter-shaped cover is further arranged. Additional wheels were added on both sides of the tank to make the screw float slightly above the bottom of the settling basin, and an injection nozzle was installed in front of both wheels to inject royal water to the bottom of the settling basin just in front of the wheels. This sand raking machine is characterized by: