Water decanting device of sedimentation tank

Abstract

The utility model is applicable to the technical field of sewage treatment, and provides a decanting device for a sedimentation tank, which comprises the sedimentation tank, a driving mechanism is mounted at the top end of the sedimentation tank, a decanting mechanism is mounted on the sedimentation tank under the driving mechanism, and a liquid level sensor is mounted on the side wall of the sedimentation tank. A PLC (Programmable Logic Controller) is mounted on the driving mechanism; the liquid level sensor is electrically connected with the PLC; the driving mechanism is used for driving the decanting mechanism below to rotate up and down, the angle of the decanting mechanism can be freely adjusted according to the water level in the sedimentation tank, the decanting effect and efficiency are improved, the decanting mechanism is used for decanting clear liquid in the sedimentation tank, the sewage treatment efficiency and the water quality stability are improved, the structure is simple, and the practicability is high. The maintenance is easy, and the operation cost and maintenance difficulty of the equipment are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment especially relates to a sedimentation tank water decanting device. BACKGROUND

[0002] The sedimentation tank is a kind of construction that removes suspended solids in water by sedimentation, and is a water purification equipment. It removes suspended solids in water by natural sedimentation or coagulation sedimentation. According to the direction of water flow, the sedimentation tank is divided into horizontal sedimentation tank and vertical sedimentation tank. The sedimentation effect depends on the flow rate of water in the sedimentation tank and the residence time of water in the tank. In order to improve the sedimentation effect and reduce the land area, honeycomb inclined pipe counterflow sedimentation tank, accelerated clarifier, pulse clarifier and other devices are often used. The sedimentation tank is widely used in wastewater treatment.

[0003] The traditional sedimentation tank water decanter has some shortcomings, such as low decanting efficiency, easy to be affected by water flow disturbance during decanting process, and the structure of some decanters is complex, difficult to install and maintain, which increases the use cost and workload. UTILITY MODEL CONTENT

[0004] The utility model provides a sedimentation tank water decanting device, which aims to solve the problems of the traditional sedimentation tank water decanter, such as low decanting efficiency, easy to be affected by water flow disturbance during decanting process, and the structure of some decanters is complex, difficult to install and maintain, which increases the use cost and workload.

[0005] The utility model is realized as follows: a sedimentation tank water decanting device, comprising a sedimentation tank, a driving mechanism is installed at the top end of the sedimentation tank, a water decanting mechanism is installed directly below the driving mechanism, a liquid level sensor is installed on the side wall of the sedimentation tank, a PLC controller is installed on the driving mechanism, and the liquid level sensor is electrically connected with the PLC controller.

[0006] Preferably, the driving mechanism comprises a mounting plate installed at the top end of the sedimentation tank, a pneumatic cylinder installed on the mounting plate, two groups of rollers vertically and symmetrically installed on the side wall directly below the pneumatic cylinder, two groups of slide rails symmetrically installed at the bottom end of the output end of the pneumatic cylinder, and the two groups of slide rails are respectively located on the two groups of rollers and are adapted to each other, and the pneumatic cylinder is electrically connected with the PLC controller.

[0007] The above-mentioned further scheme has the beneficial effects that it is used to drive the water decanting mechanism below to rotate up and down, so as to freely adjust the angle of the water decanting mechanism according to the water level in the sedimentation tank, and improve the decanting effect and efficiency.

[0008] Preferably, the water decanting mechanism comprises a base fixedly installed at the bottom of the inner side wall of the sedimentation tank, two groups of bearing supports symmetrically arranged on the base, and a water collecting main pipe rotatably connected to the two groups of bearing supports.

[0009] The above further scheme has the beneficial effect of improving the sewage treatment efficiency and water quality stability for decanting the clear liquid in the sedimentation tank.

[0010] Preferably, a connecting rod is arranged between the driving mechanism and the water decanting mechanism, and the two ends of the connecting rod are rotatably connected to the branch pipe and the output end of the air cylinder respectively.

[0011] The above further scheme has the beneficial effect of adjusting the angle of the water decanting mechanism through the connecting rod under the driving of the air cylinder, so that the water decanting process is always carried out within the appropriate liquid level range.

[0012] Preferably, a V-shaped chute is arranged at the bottom of the sedimentation tank.

[0013] The above further scheme has the beneficial effect of facilitating the sliding of the precipitated sludge to the bottom of the V-shaped chute and facilitating the centralized discharge.

[0014] Preferably, a rotary packing seal joint is arranged at one end of the water collecting main pipe, a drain pipe is fixedly communicated with the end of the rotary packing seal joint away from the water collecting main pipe, and the drain pipe extends outwardly through the inner side wall of the sedimentation tank.

[0015] The above further scheme has the beneficial effect of facilitating the communication with the external drain pipe and facilitating the discharge of the decanted clear water through the drain pipe.

[0016] Preferably, a sludge discharge pipe is arranged at the bottom of the sedimentation tank.

[0017] The above further scheme has the beneficial effect of facilitating the centralized discharge of the sludge.

[0018] Compared with the prior art, the beneficial effect of the present application is that the water decanting device of the sedimentation tank drives the water decanting mechanism to rotate up and down, facilitates the free adjustment of the angle of the water decanting mechanism according to the water level in the sedimentation tank, improves the water decanting effect and efficiency, improves the sewage treatment efficiency and water quality stability for decanting the clear liquid in the sedimentation tank, has a simple structure, is easy to maintain, and reduces the operation cost and maintenance difficulty of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the side view structure;

[0021] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0022] Figure 4 for Figure 1 Enlarged schematic diagram of the structure at point B.

[0023] In the diagram: 1. Sedimentation tank; 2. Drive mechanism; 21. Mounting plate; 22. Cylinder; 23. Roller; 24. Slide rail; 3. Decanting mechanism; 31. Base; 32. Bearing support; 33. Main water collection pipe; 34. Branch pipe; 35. Decanting weir; 4. Liquid level sensor; 5. Connecting rod; 6. Rotary packing seal joint; 7. Drainage pipe; 8. Slag discharge pipe; 9. PLC controller. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] Please see Figures 1-4 This utility model provides a technical solution for a sedimentation tank decanting device: a sedimentation tank decanting device includes a sedimentation tank 1, a drive mechanism 2 installed at the top of the sedimentation tank 1, a decanting mechanism 3 installed directly below the drive mechanism 2, a liquid level sensor 4 installed on the side wall of the sedimentation tank 1, and a PLC controller 9 installed on the drive mechanism 2. The liquid level sensor 4 is electrically connected to the PLC controller 9.

[0026] In this embodiment, a drive mechanism 2 is provided to drive the decanting mechanism 3 below to rotate up and down, so that the angle of the decanting mechanism 3 can be freely adjusted according to the water level in the sedimentation tank 1, thereby improving the decanting effect and efficiency. The decanting mechanism 3 is used to decant the clear liquid in the sedimentation tank 1, thereby improving the sewage treatment efficiency and water quality stability. It can achieve efficient decanting of the clear liquid in the sedimentation tank, thereby improving the sewage treatment efficiency and water quality stability. A liquid level sensor 4 is provided to monitor the water level changes in the sedimentation tank in real time and transmit the water level data to the PLC controller 9. The PLC controller 9 determines when to start or stop the decanting operation based on the water level data, and adjusts the lifting height of the float mechanism to ensure that the decanting process is always carried out within a suitable liquid level range.

[0027] Further, the driving mechanism 2 comprises a mounting plate 21 installed at the top end of the sedimentation tank 1, a cylinder 22 installed on the mounting plate 21, two groups of rollers 23 vertically symmetrically installed on the side wall of the sedimentation tank 1 directly below the cylinder 22, and two groups of sliding rails 24 symmetrically installed at the bottom end of the output end of the cylinder 22, wherein the two groups of sliding rails 24 are respectively located on the two groups of rollers 23 and are adapted to each other, and the cylinder 22 is electrically connected with the PLC controller 9.

[0028] In the embodiment, the driving mechanism 2 is provided to rotate the decanting mechanism 3 below up and down, which facilitates free adjustment of the angle of the decanting mechanism 3 according to the water level in the sedimentation tank 1, improves the decanting effect and efficiency, and reduces the labor intensity. The mounting plate 21 is fixedly connected at the top end of the sedimentation tank 1, the cylinder 22 is installed on the mounting plate 21, two groups of rollers 23 are installed at the bottom end of the output end of the cylinder 22 through a cross bar, and the rollers 23 are installed in the sliding groove of the sliding rail 24. Under the driving of the cylinder 22, the two groups of rollers 23 can roll up and down on the sliding rail 24, which ensures the stability of the up and down movement of the output end of the cylinder 22.

[0029] Generally, the decanting mechanism 3 comprises a base 31 fixedly installed on the inner side wall of the sedimentation tank 1, two groups of bearing supports 32 symmetrically arranged on the base 31, a water collecting main pipe 33 rotatably connected to the two groups of bearing supports 32, a plurality of groups of branch pipes 34 vertically arranged on the water collecting main pipe 33, and a plurality of groups of decanting weirs 35 arranged at the top end of the branch pipes 34 and sequentially connected with the branch pipes 34.

[0030] In the embodiment, the decanting mechanism 3 is provided to decant the clear liquid in the sedimentation tank 1, which improves the sewage treatment efficiency and water quality stability. The decanting mechanism 3 comprises the decanting weirs 35, which collect the clear liquid in the sewage tank and flow into the water collecting main pipe 33 through the plurality of groups of branch pipes 34. The two ends of the water collecting main pipe 33 are rotatably connected with the base 31 through the bearing supports 32, which facilitates free adjustment of the angle by the driving mechanism 2 above, thereby improving the decanting efficiency.

[0031] Specifically, a connecting rod 5 is arranged between the driving mechanism 2 and the decanting mechanism 3, and the two ends of the connecting rod 5 are rotatably connected with the branch pipe 34 and the output end of the cylinder 22 respectively through the shafts.

[0032] In the embodiment, the connecting rod 5 is arranged between the driving mechanism 2 and the decanting mechanism 3, and the angle of the decanting mechanism 3 can be adjusted by the connecting rod 5 under the driving of the cylinder 22, which ensures that the decanting process is always carried out within the appropriate liquid level range.

[0033] In addition, the bottom of the sedimentation tank 1 is provided with a V-shaped chute.

[0034] In the embodiment, the V-shaped chute is arranged at the bottom of the sedimentation tank 1, so that the precipitated sludge can slide to the bottom of the V-shaped chute and be discharged.

[0035] In addition, one end of the water collecting pipe 33 is provided with a rotary packing seal joint 6, one end of the rotary packing seal joint 6 away from the water collecting pipe 33 is fixedly connected with a drain pipe 7, and the drain pipe 7 extends outwardly through the inner side wall of the sedimentation tank 1.

[0036] In the embodiment, the rotary packing seal joint 6 is connected at one end of the water collecting pipe 33, so that the water collecting pipe 33 can be communicated with the external drain pipe 7, and the decanted water can be discharged through the drain pipe 7, wherein the rotary packing seal joint 6 is a single-circuit rotary joint, and one end of the water collecting pipe 33 can rotate on the rotary packing seal joint 6.

[0037] It should be noted that the bottom of the sedimentation tank 1 is provided with a residue discharge pipe 8.

[0038] In the embodiment, the residue discharge pipe 8 is arranged at the bottom of the sedimentation tank 1 and connected with the inside of the sedimentation tank 1, and located at the bottom of the V-shaped chute, so that the sludge can be discharged.

[0039] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sedimentation tank decanting device, characterized in that: The system includes a sedimentation tank (1), a drive mechanism (2) is installed at the top of the sedimentation tank (1), a decanting mechanism (3) is installed directly below the drive mechanism (2) in the sedimentation tank (1), a liquid level sensor (4) is installed on the side wall of the sedimentation tank (1), and a PLC controller (9) is installed on the drive mechanism (2). The liquid level sensor (4) is electrically connected to the PLC controller (9).

2. The sedimentation tank decanting device according to claim 1, characterized in that: The drive mechanism (2) includes: a mounting plate (21), which is mounted on the top of the sedimentation tank (1). A cylinder (22) is mounted on the mounting plate (21). Two sets of rollers (23) are vertically and symmetrically mounted on the side wall of the sedimentation tank (1) directly below the cylinder (22). The output end of the cylinder (22) extends through the mounting plate (21) to the bottom. Two sets of slide rails (24) are symmetrically mounted at the bottom of the output end of the cylinder (22). The two slide rails (24) are located on the two sets of rollers (23) respectively, and the two are compatible with each other. The cylinder (22) is electrically connected to the PLC controller (9).

3. The sedimentation tank decanting device according to claim 2, characterized in that: The decanting mechanism (3) includes: a base (31), which is fixedly installed at the bottom of the inner wall of the sedimentation tank (1). Two sets of bearing supports (32) are symmetrically arranged on the base (31). A main water collection pipe (33) is rotatably connected to the two sets of bearing supports (32). Several sets of branch pipes (34) are vertically arranged on the main water collection pipe (33). The several sets of branch pipes (34) are all fixedly connected to the main water collection pipe (33). A decanting weir (35) is provided at the top of the several sets of branch pipes (34). The decanting weir (35) is connected to the several sets of branch pipes (34) in sequence.

4. The sedimentation tank decanting device according to claim 3, characterized in that: A connecting rod (5) is provided between the drive mechanism (2) and the decanting mechanism (3). Both ends of the connecting rod (5) are rotatably connected to the output ends of the branch pipe (34) and the cylinder (22) respectively through rotating shafts.

5. A sedimentation tank decanting device according to claim 1, characterized in that: The bottom of the sedimentation tank (1) is provided with a V-shaped inclined groove.

6. A sedimentation tank decanting device according to claim 3, characterized in that: One end of the main water collection pipe (33) is provided with a rotary packing sealing joint (6), and the end of the rotary packing sealing joint (6) away from the main water collection pipe (33) is fixedly connected to a drain pipe (7), which extends outward through the inner wall of the sedimentation tank (1).

7. A sedimentation tank decanting device according to claim 1, characterized in that: The sedimentation tank (1) is equipped with a slag discharge pipe (8) at the bottom.

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