JPH07504U - Settling pond - Google Patents

Abstract

(57) [Summary] (Modified) [Objective] To provide a sedimentation pond with a rotary scraper whose structure is simplified. [Structure] In a circular or rectangular settling basin 1 equipped with a sludge scraper 15 rotatable around a rotation center in the center of the basin on the bottom of the basin, a superconducting electromagnet 17 is provided on the sludge scraper side, and a bottom of the settling basin opposite thereto. Electromagnets 18 are arranged in the circumferential direction on the wall, and the sludge scraper can be rotationally driven by these. Further, the sludge scraper can be raised and lowered along the rotation center. Further, on the sludge scraper side, a sled member that slides along the sediment is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a circular or square sedimentation basin.

[0002]

[Prior art]

 For example, a circular sedimentation basin is generally constructed by fixing a motor to a corridor provided above the pond and allowing it to be driven by a rotary shaft connected to the motor.

[0003]

[Problems to be solved by the device]

 Such a drive system had to have a complicated structure.

The present invention has been made in order to solve the above problems, and an object thereof is to provide a sedimentation pond having a simplified structure.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a device according to claim 1 is a circular or rectangular sedimentation basin equipped with a sludge scraper rotatable around a center of rotation in the center of the pond, wherein the sludge scraper side is superconducting. It is characterized in that electromagnets are arranged in the circumferential direction on the bottom wall of the sedimentation basin facing the electromagnets, and the sludge scrapers can be driven to rotate by these. According to the second aspect of the invention, the sludge scraper can be moved up and down along the rotation center. According to the third aspect of the invention, the sludge scraper side is provided with a sled member that slides along the sediment. According to a fourth aspect of the present invention, in a circular or rectangular sedimentation basin having a fixed rotary shaft and a sludge scraper rotatable around the rotary shaft on the bottom of the pond, a drive is provided above the sludge scraper. An arm is provided so as to be horizontally rotatable, a superconducting electromagnet is arranged on the side of the arm, and electromagnets are arranged on the side of the sediment tank facing the arm in the circumferential direction, whereby the drive arm is rotationally driven and via a reduction mechanism. It is characterized in that the sludge scraper is driven. According to a fifth aspect of the present invention, the wastewater is guided into the pond from the center of the bottom of the pond by a pipe, and the upper end of the pipe receives the guided wastewater and converts the flow downward into a control body. Is installed. According to a sixth aspect of the invention, a purifying means is provided in the pond, and the purifying means is supplied with air by the rotary motion of the sludge scraper.

[0006]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. 1 and 2 show a circular sedimentation basin which is an embodiment of the present invention. Reference numeral 1 is a circular sedimentation pond, which has a peripheral wall 2 and a conical bottom wall 3. A water surface 4 is set in the sedimentation pond 1, and a baffle plate 5 and an overflow weir 6 are provided so that supernatant water can be extracted from the overflow weir 6.

A sludge pit 7 is formed in the center of the bottom of the sedimentation basin 1, and a sludge discharge pipe 8 is connected to the pit 7. A receiving cylinder 9 is embedded and fixed in the upper opening of the sludge pit 7, and a rotary support shaft 11 is vertically fixed to the cylindrical cylinder 9 via a plurality of receiving plates 10 in the circumferential direction.

Reference numeral 15 is a sludge scraper, and two scraper scrapers 15 are provided at positions facing each other on the outer circumference. The sludge scraper 15 is rotatably and vertically movable via a rotary cylinder 16 fitted around the rotary support shaft 11. A sled-shaped superconducting electromagnet 17 is attached to the bottom of the sludge scraper 15 in the middle of the wing, and a large number of electromagnets 18 are circumferentially embedded and fixed in the bottom wall 3.

The sludge scraper 15 scrapes the sediment accumulated on the bottom of the pond while rotating at a very low speed by the superconducting electromagnet 17 and the electromagnet 18, and collects it in the sludge pit 7. The precipitate is introduced into the next treatment facility through the sludge discharge pipe 8. When a large amount of sediment accumulates at the bottom of the sedimentation basin 1, the sled, which also serves as the superconducting electromagnet 17, rides on the sediment and performs a retreat operation. At that time, the rotary cylinder 16 escapes upward along the rotary support shaft 11. Reference numeral 19 is a stopper that also serves as a cover, and 20 is a cover.

The columns 21 and 21 are erected from the sludge scraper 15, and the scum scraping plate 22 is attached through the upper ends of the columns 21 and 21. The scum scraping plate 22 scrapes scum on the water surface 4, collects it in the scum collecting box 23, and discharges it through the scum pipe 24.

3 and 4 show another embodiment. In this embodiment, 30 is a circular sedimentation basin having a peripheral wall 31 and a bottom wall 32. A sludge pit 33 is formed at the center of the bottom, and sludge is discharged from the bottom by a sludge discharge pipe 34. A receiving cylinder 35 is embedded and fixed in the upper opening of the sludge pit 33, and a rotary support shaft 37 is vertically fixed to the same cylinder 35 via a plurality of receiving plates 36 in the circumferential direction.

Reference numeral 38 is a sludge scraper, and two scraper scrapers 38 are provided at positions facing each other on the outer circumference. The sludge scraper 38 is rotatably and vertically movable via a rotary cylinder 39 fitted around the rotary support shaft 37. A sled member may be provided at the bottom of the sludge scraper 38.

Reference numeral 40 denotes a drive arm, which is provided on the upper end of the rotation support shaft 37 so as to be horizontally rotatable. The drive arm 40 is provided with a superconducting electromagnet 41 at the tip thereof, and a large number of electromagnets 42 ... Are embedded in the peripheral wall 31 of the settling tank 30 facing the superconducting electromagnet 41. Then, when the drive arm 40 rotates, the gear 46 on the outer circumference is interlocked with rotation via the first pinion 44 of the transmission cylinder 43 and the second pinion 45 on the fixed side. The gear 46 is connected to the sludge scraper 38. The first pinion 44, the second pinion 45, and the gear 46 form a reduction mechanism.

That is, when the driving arm 40 is linearly rotated, the gear 46 is rotationally driven from the transmission cylinder 43 via the first pinion 44 and the second pinion 45. As a result, the sludge scraper 38 is rotationally driven at a speed much slower than that of the drive arm 40.

FIG. 5 shows another embodiment. In this embodiment, 50 is a circular sedimentation tank having a peripheral wall 51 and a bottom wall 52. A sludge pit 53 is formed at the center of the bottom, and sludge is discharged from the bottom by a sludge discharge pipe 54. A receiving cylinder 55 is embedded and fixed in the upper opening of the sludge pit 53, and a dirty water inflow cylinder 57 is vertically fixed to the same cylinder 55 via a plurality of receiving plates 56 in the circumferential direction.

Reference numeral 58 is a sludge scraper, and two scraper scrapers 58 are provided at positions facing each other on the outer circumference. The sludge scraper 58 is rotatably and vertically movable via a rotary cylinder 59 fitted around the wastewater inflow cylinder 57. The sludge scraper 58 is provided with a superconducting electromagnet 61, and the superconducting electromagnet 50 is provided with electromagnets 62 ..., The scraper 58 is driven to rotate.

At the upper end of the inflow cylinder 57, a control body 60 that receives the guided wastewater and converts the flow downward is attached. It should be noted that the sewage from these is made to hit the swash plate 63 shown on the left side of FIG. 5 or the sponge 64 shown on the right side. When the swash plate 63 is hit with sewage, the flow of sewage stalls and gently flows into the sedimentation basin 50, and at the same time promotes the rotation of the sludge scraper 58. Further, the sponge 64 stalls the waste water more effectively. The surface of the sponge 64 may be slanted.

FIG. 6 shows another embodiment. In this embodiment, 70 is a wastewater inflow cylinder, a casing 71 is attached to the upper end thereof, and the casing 71 is filled with means 72 for purifying the wastewater in the form of particles. Air is sent to the purifying means 72 in order to make the purification more effective. Therefore, a ball 74 is provided at the tip of the sludge scraper 73, and an elastic ball 75 is provided at the settling tank 79 side. When the scraper 73 rotates, the sphere 74 presses the elastic sphere 75 and sends the internal air into the porous supply pipe 76. Reference numeral 77 is a pump, and 78 is a check valve. The purification means 72 uses a bio-oxidizing filter medium called DS Bio (trade name) manufactured by Dou Science Co., Ltd.

[0019]

[Effect of device]

 As described above, this device can simplify the structure.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a circular sedimentation basin which is an embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a sled member.

FIG. 3 is a vertical cross-sectional view showing another embodiment.

FIG. 4 is a plan view thereof.

FIG. 5 is a vertical cross-sectional view showing another embodiment.

FIG. 6 is a vertical sectional view showing another embodiment.

[Explanation of symbols]

 1 30 50 79 Sedimentation tank 15 38 58 79 Sludge scraper 17 42 61 Superconducting electromagnet 18 42 62 62 Electromagnet

Claims (6)

[Scope of utility model registration request] 1. A circular or rectangular sedimentation basin having a sludge scraper rotatable around the center of rotation in the center of the basin on the bottom of the basin, wherein a superconducting electromagnet is provided on the sludge scraper side, and a bottom wall of the sedimentation basin opposite thereto. The settling tank is characterized in that electromagnets are arranged in the circumferential direction, and the sludge scrapers can be driven to rotate by these. 2. The sedimentation basin according to claim 1, wherein the sludge scraper is movable up and down along the center of rotation. 3. The sedimentation pond according to claim 1, wherein a sled member that slides along the sediment is provided on the sludge scraper side. 4. A circular or rectangular sedimentation basin having a fixed rotary shaft and a sludge scraper rotatable about the rotary shaft at the bottom of the pond, wherein a drive arm is horizontal above the sludge scraper. A superconducting electromagnet is rotatably provided on the arm side and electromagnets are arranged on the side of the settling tank facing the arm in the circumferential direction. The drive arm is rotationally driven by these, and the sludge scraper is moved through a reduction mechanism. The settling pond is characterized by being driven through. 5. The sewage is introduced into the pond from the center of the bottom of the pond by a pipe, and at the upper end of the pipe,
5. The sedimentation basin according to any one of claims 1 to 4, further comprising a control body mounted to receive the guided wastewater and convert the flow downward. 6. The sedimentation basin according to claim 1, wherein a purification means is provided in the pond, and the purification means is supplied with air by rotational movement of a sludge scraper.