Sludge treatment sedimentation tank with high sedimentation rate

Abstract

The sedimentation tank comprises a sedimentation tank body, a stirring mechanism is arranged in the upper end of the sedimentation tank body, a dosing port is formed in the upper end of the sedimentation tank body, a water inlet pipe is fixedly connected to the circumferential surface of the upper end of the sedimentation tank body, and an annular flow guide block is fixedly connected to the interior of the sedimentation tank body; opening-closing mechanisms are arranged at the lower ends of the annular flow guide blocks; a first water outlet pipe and a second water outlet pipe are fixedly connected to the circumferential surface of the sedimentation tank body and distributed on the upper side and the lower side of the annular flow guide block, and electromagnetic valves are mounted on the first water outlet pipe and the second water outlet pipe; a pollution discharge mechanism is arranged at the lower end of the sedimentation tank body. According to the utility model, the settled sludge can be settled twice, so that the water content in the sludge is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sedimentation tanks, in particular to a sedimentation tank for sludge treatment with a fast sedimentation rate. Background Art

[0002] A sedimentation tank is a structure that uses sedimentation to remove suspended matter from water. It is widely used in wastewater treatment and comes in many types. According to the direction of water flow in the tank, it can be divided into three types: horizontal flow, vertical flow and radial flow.

[0003] When applying for the present invention, the applicant found through searching that a Chinese patent disclosed a "sedimentation tank for sludge treatment with a fast sedimentation rate", and its application number is "202020884995.3". The patent mainly includes a first frame, an electric push rod is fixedly connected to the left side of the inner wall of the first frame, a push plate is fixedly connected to the right side of the electric push rod, a sedimentation tank body is fixedly connected to the top of the first frame, and a motor is fixedly connected to the top of the sedimentation tank body. The utility model is provided with a stirring assembly, and when the solution is added to the inside of the sedimentation tank body, the solution and sewage can be quickly mixed to achieve a better sedimentation effect, and the sewage can be quickly precipitated under the centrifugal operation trend, shortening the sedimentation time and improving the sedimentation efficiency. By providing a push plate and utilizing the function of the electric push rod, automatic sewage discharge is realized, and the sludge is directly discharged, avoiding the operator from entering the inside of the sedimentation tank body for cleaning, and reducing the labor intensity of cleaning the sludge.

[0004] Although the above patent achieves the purpose of rapid sedimentation, when treating the precipitated sludge, the precipitated sludge is discharged after only one sedimentation treatment, which will make the discharged sludge have a relatively high water content, thereby causing a waste of water resources. Therefore, it is necessary to design a sedimentation tank for sludge treatment with a fast sedimentation rate. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a sedimentation tank for sludge treatment with a fast sedimentation rate.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sedimentation tank for sludge treatment with a fast sedimentation rate, comprising a sedimentation tank body, a stirring mechanism is arranged inside the upper end of the sedimentation tank body, a dosing port is opened at the upper end of the sedimentation tank body, a water inlet pipe is fixedly connected to the circumferential surface of the upper end of the sedimentation tank body, an annular guide block is fixedly connected to the inside of the sedimentation tank body, and an opening and closing mechanism is arranged at the lower end of the annular guide block; a first water outlet pipe and a second water outlet pipe are fixedly connected to the circumferential surface of the sedimentation tank body, the first water outlet pipe and the second water outlet pipe are distributed on the upper and lower sides of the annular guide block, and solenoid valves are installed on the first water outlet pipe and the second water outlet pipe; a sewage discharge mechanism is arranged at the lower end of the sedimentation tank body.

[0007] As a further description of the above technical solution:

[0008] The stirring mechanism includes a first motor, a stirring shaft and stirring blades. The first motor is fixedly connected to the upper end of the sedimentation tank body, and the stirring shaft is rotatably connected inside the sedimentation tank body. The output end of the first motor is fixedly connected to the stirring shaft, and the stirring blades are fixedly connected to the circumferential surface of the stirring shaft.

[0009] As a further description of the above technical solution:

[0010] The opening and closing mechanism includes a cylinder and a sealing plate. The circumferential surface of the sedimentation tank body is fixedly connected with the cylinder. The protruding end of the cylinder penetrates the sedimentation tank body and is slidably connected to the sedimentation tank body. The protruding end of the cylinder is fixedly connected with the sealing plate, and the sealing plate is located at the lower end of the annular guide block.

[0011] As a further description of the above technical solution:

[0012] A guide rod is fixedly connected inside the sedimentation tank body, a guide block is slidably connected to the circumferential surface of the guide rod, and the upper end of the guide block is fixedly connected to the sealing plate.

[0013] As a further description of the above technical solution:

[0014] The sewage discharge mechanism includes a conveying cylinder, a sewage discharge pipe, a valve, an auger and a second motor. The lower end of the sedimentation tank body is fixedly connected to the conveying pipe, the circumferential surface of the conveying pipe is fixedly connected to the sewage discharge pipe, and a valve is installed on the sewage discharge pipe; an auger is rotatably connected inside the conveying pipe, the lower end of the conveying pipe is fixedly connected to the second motor, and the output end of the second motor is fixedly connected to the auger.

[0015] As a further description of the above technical solution:

[0016] The circumferential surface at the lower end of the sedimentation tank body is fixedly connected with a supporting leg, and four supporting legs are provided and distributed in a circumferential array.

[0017] The utility model has the following beneficial effects:

[0018] 1. Compared with the prior art, the sedimentation tank for sludge treatment with a fast sedimentation rate is provided with an annular guide block and an opening and closing mechanism. With the cooperation of the annular guide block and the opening and closing mechanism, the interior of the sedimentation tank body can be divided into two parts. The upper sedimentation tank is used for preliminary sedimentation. After the preliminary sedimentation, the sludge enters the lower part of the sedimentation tank body after the opening and closing mechanism is opened, and then undergoes secondary sedimentation in the lower part of the sedimentation tank body. The sludge after the secondary sedimentation has a relatively low water content, thereby reducing the waste of water resources. At the same time, after the opening and closing mechanism is closed, the sewage in the upper part of the sedimentation tank will not be turned over when the sludge is discharged, which is conducive to the sedimentation operation of the sewage.

[0019] 2. Compared with the prior art, the sedimentation tank for sludge treatment with a fast sedimentation rate is provided with a first motor, a stirring shaft and a stirring blade. When the first motor works, the stirring blade is driven to rotate under the action of the stirring shaft, and the rotation of the stirring blade can accelerate the mixing of the flocculant with the sewage, thereby achieving a better sedimentation effect. Moreover, under the centrifugal operation trend, the sewage can achieve rapid sedimentation and shorten the sedimentation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall first-view structure of a sedimentation tank for sludge treatment with a fast sedimentation rate proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the overall second-angle structural view of a sedimentation tank for sludge treatment with a fast sedimentation rate proposed by the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the first perspective of the interior of a sedimentation tank for sludge treatment with a fast sedimentation rate proposed by the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the second perspective of the interior of a sedimentation tank for sludge treatment with a fast sedimentation rate proposed by the utility model;

[0024] Figure 5 The utility model proposes a sedimentation tank for sludge treatment with a fast sedimentation rate. Figure 5 Enlarged view of part A.

[0025] Legend:

[0026] 1. Sedimentation tank body; 2. Stirring mechanism; 201. First motor; 202. Stirring shaft; 203. Stirring blades; 3. Water inlet pipe; 4. First water outlet pipe; 5. Second water outlet pipe; 6. Opening and closing mechanism; 601. Cylinder; 602. Sealing plate; 7. Support legs; 8. Sewage discharge mechanism; 801. Conveying cylinder; 802. Sewage discharge pipe; 803. Valve; 804. Auger; 805. Second motor; 9. Solenoid valve; 10. Dosing port; 11. Annular guide block; 12. Guide rod; 13. Guide block. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1-5 The utility model provides a sedimentation tank for sludge treatment with a fast sedimentation rate, comprising a sedimentation tank body 1, a stirring mechanism 2 is arranged inside the upper end of the sedimentation tank body 1, a dosing port 10 is opened at the upper end of the sedimentation tank body 1, a water inlet pipe 3 is fixedly connected to the circumferential surface of the upper end of the sedimentation tank body 1, an annular guide block 11 is fixedly connected inside the sedimentation tank body 1, and an opening and closing mechanism 6 is arranged at the lower end of the annular guide block 11; a first water outlet pipe 4 and a second water outlet pipe 5 are fixedly connected to the circumferential surface of the sedimentation tank body 1, the first water outlet pipe 4 and the second water outlet pipe 5 are distributed on the upper and lower sides of the annular guide block 11, and solenoid valves 9 are installed on the first water outlet pipe 4 and the second water outlet pipe 5; a sewage discharge mechanism 8 is arranged at the lower end of the sedimentation tank body 1.

[0029] Specifically, sewage enters the upper part of the sedimentation tank body 1 through the water inlet pipe 3, and then the stirring mechanism 2 works, and at the same time, flocculant is added to the inside of the sedimentation tank body 1 through the dosing port 10, and then the flocculant and sewage can be fully mixed under the action of the stirring mechanism 2, thereby accelerating the sedimentation of the sludge. After the sludge sedimentation is completed, the solenoid valve 9 on the first outlet pipe 4 is opened, and clean water can be discharged from the first outlet pipe 4. Then the opening and closing mechanism 6 works to allow the initially settled sludge to enter the lower part of the sedimentation tank body 1, and then the sedimentation operation continues in the lower part of the sedimentation tank body 1, and the clean water on the upper layer of the sludge that has undergone secondary sedimentation is discharged from the second outlet pipe 5, so that the water content of the sludge can be reduced, thereby reducing the waste of water resources. When there is more sludge at the lower end of the sedimentation tank body 1, the sewage discharge mechanism 8 works to discharge the sludge at the lower end of the sedimentation tank, which is beneficial for the equipment to continue the sedimentation operation.

[0030] The stirring mechanism 2 includes a first motor 201, a stirring shaft 202 and a stirring blade 203. The first motor 201 is fixedly connected to the upper end of the sedimentation tank body 1, and the stirring shaft 202 is rotatably connected inside the sedimentation tank body 1. The output end of the first motor 201 is fixedly connected to the stirring shaft 202, and the circumferential surface of the stirring shaft 202 is fixedly connected to the stirring blade 203. When working, the first motor 201 works and drives the stirring blade 203 to rotate under the action of the stirring shaft 202. The rotation of the stirring blade 203 can accelerate the mixing of the flocculant with the sewage, thereby achieving a better sedimentation effect. Under the centrifugal operation trend, the sewage can achieve rapid sedimentation and shorten the sedimentation time.

[0031] The opening and closing mechanism 6 includes a cylinder 601 and a sealing plate 602. The cylinder 601 is fixedly connected to the circumferential surface of the sedimentation tank body 1. The protruding end of the cylinder 601 penetrates the sedimentation tank body 1 and is slidably connected to the sedimentation tank body 1. The protruding end of the cylinder 601 is fixedly connected to the sealing plate 602. The sealing plate 602 is located at the lower end of the annular guide block 11. When working, the cylinder 601 contracts, and then the sealing plate 602 can be driven to open, so as to facilitate the initial precipitated sludge to fall downward; when the cylinder 601 is extended, the sealing plate 602 can be driven to close. After the sealing plate 602 is closed, the sewage on the upper part of the sedimentation tank will not be turned over when the sludge is discharged, which is conducive to the sedimentation of the sewage.

[0032] A guide rod 12 is fixedly connected to the inside of the sedimentation tank body 1, and a guide block 13 is slidably connected to the circumferential surface of the guide rod 12. The upper end of the guide block 13 is fixedly connected to the sealing plate 602. When working, the movement of the sealing plate 602 can be limited by setting the guide rod 12 and the guide block 13, so that the sealing plate 602 can move smoothly.

[0033] The sewage discharge mechanism 8 includes a conveying cylinder 801, a sewage discharge pipe 802, a valve 803, an auger 804 and a second motor 805. The lower end of the sedimentation tank body 1 is fixedly connected with the conveying pipe, the circumferential surface of the conveying pipe is fixedly connected with the sewage discharge pipe 802, and the valve 803 is installed on the sewage discharge pipe 802; the conveying pipe is rotatably connected with the auger 804, the lower end of the conveying pipe is fixedly connected with the second motor 805, and the output end of the second motor 805 is fixedly connected with the auger 804. When working, the second motor 805 works and opens the valve 803 at the same time. At this time, under the action of the auger 804, the sludge at the bottom of the sedimentation tank can be discharged through the sewage discharge pipe 802, thereby reducing the labor intensity of workers.

[0034] The lower circumferential surface of the sedimentation tank body 1 is fixedly connected with a support leg 7. There are four support legs 7, which are distributed in a circular array. When working, the sedimentation tank body 1 can be supported by the support legs 7, thereby facilitating the operation of the equipment.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sedimentation tank for sludge treatment with a fast sedimentation rate, comprising a sedimentation tank body (1), characterized in that: A stirring mechanism (2) is arranged inside the upper end of the sedimentation tank body (1); a dosing port (10) is provided at the upper end of the sedimentation tank body (1); a water inlet pipe (3) is fixedly connected to the circumferential surface of the upper end of the sedimentation tank body (1); an annular guide block (11) is fixedly connected inside the sedimentation tank body (1); an opening and closing mechanism (6) is arranged at the lower end of the annular guide block (11); a first water outlet pipe (4) and a second water outlet pipe (5) are fixedly connected to the circumferential surface of the sedimentation tank body (1); the first water outlet pipe (4) and the second water outlet pipe (5) are distributed at the upper and lower sides of the annular guide block (11); and solenoid valves (9) are installed on the first water outlet pipe (4) and the second water outlet pipe (5); a sewage discharge mechanism (8) is arranged at the lower end of the sedimentation tank body (1).

2. A sedimentation tank for sludge treatment with a fast sedimentation rate according to claim 1, characterized in that: The stirring mechanism (2) comprises a first motor (201), a stirring shaft (202) and a stirring blade (203); the first motor (201) is fixedly connected to the upper end of the sedimentation tank body (1); the stirring shaft (202) is rotatably connected inside the sedimentation tank body (1); the output end of the first motor (201) is fixedly connected to the stirring shaft (202); and the stirring blade (203) is fixedly connected to the circumferential surface of the stirring shaft (202).

3. A sedimentation tank for sludge treatment with a fast sedimentation rate according to claim 1, characterized in that: The opening and closing mechanism (6) comprises a cylinder (601) and a sealing plate (602); the cylinder (601) is fixedly connected to the circumferential surface of the sedimentation tank body (1); the protruding end of the cylinder (601) penetrates the sedimentation tank body (1) and is slidably connected to the sedimentation tank body (1); the protruding end of the cylinder (601) is fixedly connected to the sealing plate (602); and the sealing plate (602) is located at the lower end of the annular guide block (11).

4. A sedimentation tank for sludge treatment with a fast sedimentation rate according to claim 3, characterized in that: A guide rod (12) is fixedly connected inside the sedimentation tank body (1), and a guide block (13) is slidably connected to the circumferential surface of the guide rod (12), and the upper end of the guide block (13) is fixedly connected to the sealing plate (602).

5. The sedimentation tank for sludge treatment with a fast sedimentation rate according to claim 1, characterized in that: The sewage discharge mechanism (8) comprises a conveying cylinder (801), a sewage discharge pipe (802), a valve (803), an auger (804) and a second motor (805); the lower end of the sedimentation tank body (1) is fixedly connected to the conveying pipe, the circumferential surface of the conveying pipe is fixedly connected to the sewage discharge pipe (802), and the valve (803) is installed on the sewage discharge pipe (802); the conveying pipe is rotatably connected to the inside of the conveying pipe, the lower end of the conveying pipe is fixedly connected to the second motor (805), and the output end of the second motor (805) is fixedly connected to the auger (804).

6. A sedimentation tank for sludge treatment with a fast sedimentation rate according to claim 1, characterized in that: The lower circumferential surface of the sedimentation tank body (1) is fixedly connected with a support leg (7), and four support legs (7) are provided and distributed in a circumferential array.

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