Sludge cleaning equipment for primary sedimentation tank

Abstract

The utility model relates to the technical field of sewage treatment, in particular to primary sedimentation tank sludge cleaning equipment which comprises a primary sedimentation tank body, and a plurality of sludge sedimentation tanks which are continuously and adjacently arranged are arranged at the bottom of the primary sedimentation tank body; a sludge discharge port is reserved in one side of the sludge deposition tank, a sludge discharge mechanism arranged towards the sludge discharge port is further arranged in the sludge deposition tank, and the sludge discharge mechanism is used for discharging sludge deposited in the sludge deposition tank along the sludge discharge port; and a sludge collecting tank is arranged below the sludge discharge port of the sludge deposition tank. And an efficient sludge discharge mechanism is designed, so that the sludge deposition efficiency and the cleaning effect are remarkably improved. The narrow design of the sludge deposition tank promotes the concentration and concentration of the sludge, and the combination of the spiral conveying blade and the petal-type blade in the sludge discharge mechanism realizes the smooth discharge of the sludge and prevents the blockage, thereby ensuring the continuity and stability of the sludge cleaning process.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a primary sedimentation tank sludge cleaning device. Background Technique

[0002] In the process of sewage treatment, the primary sedimentation tank is a key treatment unit, mainly used to remove suspended solids and settleable particulate matters in sewage to reduce the load of subsequent treatment units. However, with the progress of the treatment process, a large amount of sludge will gradually accumulate at the bottom of the primary sedimentation tank. If these sludges are not cleaned in time, it will not only affect the treatment efficiency of the primary sedimentation tank, but also may cause secondary pollution to the water quality.

[0003] In the traditional primary sedimentation tank sludge cleaning method, the following problems mainly exist:

[0004] Low cleaning efficiency: The traditional method often relies on manual or simple mechanical devices for sludge cleaning, which not only has a large labor intensity, but also has a low cleaning efficiency and is difficult to meet the needs of large-scale sewage treatment.

[0005] Incomplete cleaning: Due to the uneven distribution of sludge at the bottom of the primary sedimentation tank, it is difficult for the traditional method to achieve comprehensive and thorough cleaning, and it is easy to leave dead corners, resulting in sludge accumulation.

[0006] Affect water quality: The sludge staying at the bottom of the primary sedimentation tank for a long time is easy to breed bacteria and release harmful substances, which has an adverse effect on the water quality.

[0007] High equipment maintenance cost: Although some automatic cleaning equipment can improve the cleaning efficiency, its structure is complex and the maintenance cost is high, which is not conducive to long-term stable operation. Content of the Utility Model

[0008] The utility model aims at the technical problems existing in the prior art, and provides a primary sedimentation tank sludge cleaning device to solve the problem of low efficiency of sludge cleaning in the sedimentation tank.

[0009] The technical solution of the utility model to solve the above technical problems is as follows: A primary sedimentation tank sludge cleaning device includes a primary sedimentation tank body, and a plurality of continuously adjacent sludge sedimentation tanks are arranged at the bottom of the primary sedimentation tank body; a sludge discharge port is reserved on one side of the sludge sedimentation tank, and a sludge discharge mechanism arranged towards the sludge discharge port is further arranged in the sludge sedimentation tank, and the sludge discharge mechanism is used to discharge the sludge deposited in the sludge sedimentation tank along the sludge discharge port; a sludge collection pool is arranged below the sludge discharge port of the sludge sedimentation tank.

[0010] On the basis of the above technical solution, the utility model can also be improved as follows.

[0011] Further, the width of the sludge sedimentation tank gradually narrows from the tank opening downwards, and an arc-shaped sludge discharge channel facing the sludge discharge port is reserved at the bottom of the tank.

[0012] Furthermore, the sludge discharging mechanism includes:

[0013] A driving shaft coaxially arranged in the arc-shaped sludge discharging channel;

[0014] A spiral conveying blade arranged along the front section of the driving shaft in the sludge discharging direction, and a petal-shaped blade arranged on the rear section of the driving shaft;

[0015] A motor driving part for driving the driving shaft.

[0016] Furthermore, a sludge discharging hopper is also installed at the sludge discharging port of the sludge sedimentation tank, and a control valve is installed in the sludge discharging hopper.

[0017] Furthermore, a plurality of cross bars arranged at equal intervals are also arranged at the notch of the sludge sedimentation tank.

[0018] Furthermore, a plurality of upper layer clear liquid drain pipes and middle layer suspension drain pipes are also arranged on the sludge sedimentation tank.

[0019] Moreover, the primary sedimentation tank sludge cleaning equipment provided by the present utility model, compared with the prior art, has at least the following beneficial effects:

[0020] By designing an efficient sludge discharging mechanism, the sludge sedimentation efficiency and cleaning effect are significantly improved. The narrow convergence design of the sludge sedimentation tank promotes the concentration and thickening of sludge, and the combination of the spiral conveying blade and the petal-shaped blade in the sludge discharging mechanism realizes the smooth discharge of sludge and prevents blockage, ensuring the continuity and stability of the sludge cleaning process.

[0021] By additionally providing upper layer clear liquid drain pipes and middle layer suspension drain pipes, the separate treatment of different concentration components in the sewage is realized. This design not only improves the refinement degree of sewage treatment, but also promotes the improvement of water quality purification effect. The direct discharge or further treatment of the upper layer clear liquid reduces the unnecessary treatment burden, and the separate collection and treatment of the middle layer suspension helps to remove more suspended substances and improves the effluent water quality. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 It is a schematic diagram of the structure from another perspective of the present utility model;

[0024] Figure 3 It is a schematic diagram of the internal structure of the present utility model.

[0025] In the drawings, the list of components represented by each reference numeral is as follows:

[0026] 1. Primary sedimentation tank body; 2. Sludge sedimentation tank; 2.1 Arc-shaped sludge discharge channel; 3. Sludge discharge mechanism; 3.1 Drive shaft; 3.2 Screw conveyor blade; 3.3 Petal-shaped blade; 3.4 Motor drive component; 4. Sludge collection tank; 4.1 Sludge discharge hopper; 5. Cross bar; 6. Upper clear liquid discharge pipe; 7. Middle suspension discharge pipe. Detailed implementation mode

[0027] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.

[0028] It should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" in the terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For those of ordinary skill in the art, the specific meanings of such terms in this patent can be understood according to specific circumstances.

[0029] As Figures 1 - 3 As shown, the primary sedimentation tank sludge cleaning equipment of the present utility model design includes a primary sedimentation tank body 1, and a plurality of continuously adjacent sludge sedimentation tanks 2 are provided at the bottom of the primary sedimentation tank body 1; a sludge discharge port is reserved on one side of the sludge sedimentation tank 2, and a sludge discharge mechanism 3 arranged towards the sludge discharge port is further provided in the sludge sedimentation tank 2, and the sludge discharge mechanism 3 is used to discharge the sludge deposited in the sludge sedimentation tank 2 along the sludge discharge port; a sludge collection tank 4 is arranged below the sludge discharge port of the sludge sedimentation tank 2.

[0030] As an implementation mode, the width of the sludge sedimentation tank 2 gradually narrows downward along the tank opening, and an arc-shaped sludge discharge channel 2.1 facing the sludge discharge port is reserved at the bottom of the tank. The width of the sludge sedimentation tank 2 gradually decreases from the tank opening downward. This design utilizes the principle of gravity sedimentation. When the suspended solids and particulate matters in the sewage enter the sludge sedimentation tank, due to the action of gravity, they will settle to the bottom of the tank. The gradual narrowing of the tank width enables the sludge to gradually concentrate during the downward flow process, improving the sedimentation efficiency and density of the sludge.

[0031] As an implementation mode, the sludge discharge mechanism 3 includes:

[0032] A drive shaft 3.1 coaxially arranged in the arc-shaped sludge discharge channel 2.1;

[0033] A screw conveyor blade 3.2 arranged at the front section of the drive shaft 3.1 along the sludge discharge direction, and a petal-shaped blade 3.3 arranged at the rear section of the drive shaft 3.1;

[0034] A motor drive component 3.4 for driving the drive shaft 3.1.

[0035] Driven by the motor drive 3.4, the drive shaft 3.1 can rotate continuously and stably, thereby driving the blades to convey and discharge the sludge.

[0036] When the drive shaft 3.1 rotates, the spiral conveyor blade 3.2 will push the sludge to move forward along the spiral track of the blade, realizing the preliminary conveyance and compression of the sludge.

[0037] The design of the petal-shaped blade 3.3 pays more attention to the dispersion and discharge of the sludge. When they rotate with the drive shaft, a certain centrifugal force will be generated to help throw the sludge out from between the blades and discharge it smoothly along the arc-shaped sludge discharge channel 2.1.

[0038] At the same time, the petal-shaped blade 3.3 can also prevent the sludge from clogging at the sludge discharge port to a certain extent, ensuring the smooth progress of the sludge discharge process.

[0039] As an implementation manner, a sludge discharge hopper 4.1 is further installed at the sludge discharge port of the sludge sedimentation tank 2, and a control valve is installed in the sludge discharge hopper 4.1.

[0040] The sludge discharge hopper 4.1 is a sludge collecting device designed below the sludge discharge port of the sludge sedimentation tank 2, and its shape is usually conical or funnel-shaped to more effectively collect and guide the flow direction of the sludge. The presence of the sludge discharge hopper 4.1 first ensures that the sludge can flow centrally and orderly during the discharge process, reducing the splashing and loss of the sludge. When the required cleaning amount is reached or the cleaning needs to be paused, the control valve can be closed in time to prevent the sludge from continuing to be discharged.

[0041] As an implementation manner, a plurality of equally spaced cross bars 5 are arranged at the notch of the sludge sedimentation tank 2. The arrangement of the cross bars 5 changes the flow pattern when the sewage directly flushes into the sludge sedimentation tank. The originally possible turbulence or eddy current is dispersed and slowed down, making the flow of the sewage in the sedimentation tank more stable and orderly.

[0042] As an implementation manner, a plurality of upper clear liquid drain pipes 6 and middle layer suspension drain pipes 7 are further arranged on the sludge sedimentation tank 2.

[0043] When the sewage enters the sludge sedimentation tank 2, due to the action of gravity, the suspended solids and particulate matters in the sewage will gradually sink to the bottom of the tank to form a sludge layer.

[0044] At the same time, the lighter clear water and dissolved substances will float to the liquid surface to form an upper clear liquid layer.

[0045] Between the sludge layer and the upper clear liquid layer, there is often a middle layer suspension area, where the concentration of suspended particulate matters is between that of the sludge layer and the upper clear liquid layer.

[0046] In order to improve the sewage treatment efficiency and water quality purification effect, it is necessary to treat the sewage with different concentrations separately.

[0047] By setting the upper supernatant drain pipe 6 and the middle suspension drain pipe 7, the upper supernatant and the middle suspension can be collected and treated respectively, so as to achieve the refined treatment of sewage.

[0048] The working principle of the present utility model is as follows:

[0049] This device mainly consists of the primary sedimentation tank body 1 and a series of sludge treatment components. The primary sedimentation tank body 1 is the main part of sewage treatment, which is used for initially precipitating suspended solids and particulate matters in the sewage. At the bottom of the tank body 1, several continuously adjacent sludge sedimentation tanks 2 are designed, and these sludge sedimentation tanks 2 play the role of collecting and depositing sludge.

[0050] A sludge discharge port is reserved on one side of each sludge sedimentation tank 2, which is the channel for sludge discharge. In order to efficiently discharge the sludge deposited in the tank, a sludge discharge mechanism 3 is installed inside each sludge sedimentation tank 2. The sludge discharge mechanism 3 works by mechanical or hydraulic means, and can push or transport the sludge deposited in the sludge sedimentation tank 2 along the direction of the sludge discharge port, so as to realize the automatic discharge of sludge.

[0051] When the sludge discharge mechanism 3 works, it will continuously and stably discharge the sludge in the sludge sedimentation tank 2 to the lower sludge collection tank 4. The sludge collection tank 4 is located below the sludge discharge port of the sludge sedimentation tank 2, and is used to receive and temporarily store the sludge discharged from the sludge sedimentation tank 2. In this way, through the collection and deposition of the sludge sedimentation tank 2, the discharge function of the sludge discharge mechanism 3, and the reception and storage of the sludge collection tank 4, the whole process of sludge cleaning in the primary sedimentation tank can be carried out efficiently and orderly.

[0052] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Unless otherwise expressly stipulated and defined, the terms "install", "connect", "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0053] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they learn the basic inventive concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0054] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A primary sedimentation tank sludge cleaning device, characterized in that, It includes a primary sedimentation tank body (1), and a number of continuously adjacent sludge sedimentation tanks (2) are provided at the bottom of the primary sedimentation tank body (1); a sludge discharge port is reserved on one side of the sludge sedimentation tank (2), and a sludge discharge mechanism (3) arranged towards the sludge discharge port is further provided in the sludge sedimentation tank (2), and the sludge discharge mechanism (3) is used to discharge the sludge deposited in the sludge sedimentation tank (2) along the sludge discharge port; A sludge collection tank (4) is arranged below the sludge discharge port of the sludge sedimentation tank (2).

2. The primary sedimentation tank sludge cleaning equipment according to claim 1, characterized in that The width of the sludge sedimentation tank (2) gradually narrows downward along the tank opening, and an arc-shaped sludge discharge channel (2.1) facing the sludge discharge port is reserved at the bottom of the tank.

3. The primary sedimentation tank sludge cleaning device according to claim 2, wherein The sludge discharge mechanism (3) includes: A driving shaft (3.1) coaxially arranged in the arc-shaped sludge discharge channel (2.1); A spiral conveyor blade (3.2) arranged in the front section of the driving shaft (3.1) along the sludge discharge direction, and a flap blade (3.3) arranged in the rear section of the driving shaft (3.1); A motor driving member (3.4) for driving the driving shaft (3.1).

4. The primary sedimentation tank sludge cleaning equipment according to claim 1, characterized in that, A sludge discharge hopper (4.1) is further installed at the sludge discharge port of the sludge sedimentation tank (2), and a control valve is installed in the sludge discharge hopper (4.1).

5. The primary sedimentation tank sludge cleaning equipment according to claim 1, characterized in that A number of equally spaced cross bars (5) are arranged at the tank opening of the sludge sedimentation tank (2).

6. The primary sedimentation tank sludge cleaning equipment according to claim 1, characterized in that, A number of upper layer clear liquid drain pipes (6) and middle layer suspension drain pipes (7) are further arranged on the sludge sedimentation tank (2).

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