Sludge sedimentation tank

Abstract

The utility model provides a sludge sedimentation tank, which belongs to the technical field of sewage treatment and comprises a tank body, a water inlet pipe, an annular baffle and a sludge scraping mechanism used for scraping sludge at the bottom of the tank body, a sewage discharge groove is arranged at the center of the bottom of the tank body, a stand column is fixed in the sewage discharge groove, and a plurality of water outlets are arranged on the periphery of the upper portion of the stand column. The sludge scraping mechanism is rotationally connected to the upper end of the stand column, a speed reduction driver used for driving the sludge scraping mechanism to rotate is installed on the working bridge, a scum collecting mechanism is fixed to the sludge scraping mechanism, an overflow groove is formed in the upper portion of the pool body in the circumferential direction, and the annular baffle is connected with the overflow groove. And a honeycomb inclined pipe is arranged between the annular baffle and the overflow groove. Precipitated and suspended impurities generated in the sewage treatment process can be collected through the rotary sludge scraping mechanism and the scum collecting mechanism, sewage is subjected to radial flow precipitation and honeycomb inclined tube filtration and output, and the sewage treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, and particularly relates to a sludge sedimentation tank. Background Art

[0002] A sedimentation tank is a structure that uses sedimentation to remove suspended solids in water, and utilizes the natural sedimentation or coagulation sedimentation of water to remove suspended solids in water. For example, the patent with the publication number CN213326874U discloses a sewage treatment radial flow sedimentation tank, which includes a tank body. The tank body is connected to a water inlet pipe. A rotating plate is provided at the middle position of the tank body. A pair of symmetrically arranged sludge scraping plates are welded to the rotating plate. An overflow plate is built at the upper end position of the circumferential outer wall of the tank body. A water outlet pipe is provided at the bottom surface of the overflow plate. Sewage enters the tank body from the middle through the water inlet pipe and flows to the surroundings. The sewage precipitates in the tank body and overflows from the overflow trough after clarification. The sludge scraping plates can scrape the sludge at the bottom of the tank body.

[0003] However, the sewage carries scum. After the sewage enters the sedimentation tank, the scum will float on the water surface of the tank body. Moreover, after the sewage in the sedimentation tank stands still for a period of time, water blooms are likely to occur. Therefore, whether it is scum or water bloom, it is easy to enter the overflow trough along with the overflow plate, reducing the sewage treatment effect. Although this technical means can remove the sludge deposited at the bottom of the tank body, it cannot remove the scum and water bloom suspended in the water in the tank body. Summary of the Utility Model

[0004] The utility model provides a sludge sedimentation tank, aiming to solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sludge sedimentation tank includes a tank body, a water inlet pipe, an annular baffle, and a sludge scraping mechanism for scraping the sludge at the bottom of the tank body. A sewage discharge trough is provided at the center of the bottom of the tank body. A column is fixed in the sewage discharge trough. A plurality of water outlet ports are provided around the upper part of the column. The water inlet pipe penetrates the column from bottom to top and is connected to the plurality of water outlet ports. The sludge scraping mechanism is rotatably connected to the upper end of the column. A working bridge is fixed on the tank body. A speed reducer for driving the sludge scraping mechanism to rotate is installed on the working bridge. A scum collection mechanism is fixed on the sludge scraping mechanism. A scum trough is provided in the sewage discharge trough. A cover plate is rotatably connected in the scum trough. The cover plate is rotatably connected to the column. The scum collection mechanism is connected to the cover plate through a pipe. An overflow trough is provided along the circumference at the upper part of the tank body. The annular baffle is connected to the overflow trough. A honeycomb inclined tube is installed between the annular baffle and the overflow trough.

[0007] Preferably, a steady flow cylinder is connected to the working bridge and is located around the upper part of the column.

[0008] Preferably, a sewage discharge pipe is connected to the sewage discharge tank, and a slag discharge pipe is communicated with the floating impurity tank.

[0009] Preferably, the floating slag collection mechanism includes a floating impurity collection pipe, a filter plate and a connecting pipe. The filter plate is fixed on the floating impurity collection pipe. A groove body is arranged on the floating impurity collection pipe, and a plurality of floating impurity collection ports are arranged on the groove body. The floating impurity collection pipe is communicated with the connecting pipe, the connecting pipe is connected with the cover plate, and the floating impurity collection pipe is fixed on the sludge scraping mechanism.

[0010] Preferably, the sludge scraping mechanism includes a rotating seat, a fixing frame and a plurality of sludge scraping knives. The rotating seat is rotatably connected to the upper end of the column, the fixing frame is connected with the rotating seat, and a plurality of the sludge scraping knives are connected to the fixing frame. A plurality of the sludge scraping knives are attached to the bottom wall of the pool body.

[0011] Preferably, the fixing frame includes a fixing frame body. A plurality of the sludge scraping knives are connected to the fixing frame body. Two ends of the fixing frame body are respectively connected to the rotating seat through fixing arms. A plurality of first reinforcing rods are connected inside the fixing frame body, and the first reinforcing rods are connected to the corresponding connecting arms through second reinforcing rods.

[0012] Preferably, a support rod is connected to the connecting arm. The end of the support rod is connected to the floating slag collection mechanism, and a stabilizing ring for limiting the floating slag collection mechanism is arranged on the connecting arm.

[0013] Preferably, an annular overflow plate is connected to the overflow tank, and a plurality of overflow channels are arranged above the annular overflow plate.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] A sludge sedimentation tank provided by the present utility model conveys sewage to the inside of the tank body through an inlet pipe and a plurality of outlet pipes, so as to realize the radial flow of sewage from the center of the tank body to the periphery, improve the sludge sedimentation effect. The sludge scraping mechanism rotates in the tank body with the column as the center, scrapes the sludge on the bottom wall of the tank body, and pushes the sludge into the sewage discharge tank. When the sludge scraping mechanism rotates to scrape the sludge, it can drive the floating impurity collection mechanism to rotate on the water surface of the tank body, collect sundries such as floating slag and water bloom on the water surface of the tank body, and can collect the sediment and suspended sundries generated in the sewage treatment process. The sewage can improve the sewage treatment effect after being filtered by the honeycomb inclined tube again after radial sedimentation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of a sludge sedimentation tank of the present utility model;

[0017] Figure 2 is Figure 1 an enlarged structural schematic diagram of part A in

[0018] Figure 3Schematic three-dimensional structure diagram of a sludge sedimentation tank of the present utility model;

[0019] Figure 4 Front view structure diagram of a sludge sedimentation tank of the present utility model;

[0020] Figure 5 is Figure 4 Enlarged structure diagram of A-A in

[0021] In the figure, 1 is the tank body, 2 is the water inlet pipe, 3 is the annular baffle, 4 is the sludge scraping mechanism, 5 is the rotating seat, 6 is the fixed frame, 7 is the fixed frame, 8 is the fixed arm, 9 is the first reinforcing bar, 10 is the second reinforcing bar, 11 is the support rod, 12 is the stabilizing ring, 13 is the sludge scraping knife, 14 is the sewage discharge tank, 15 is the column, 16 is the water outlet, 17 is the speed reducer, 18 is the scum collection mechanism, 19 is the floating debris collection pipe, 20 is the filter plate, 21 is the connecting pipe, 22 is the tank body, 23 is the floating debris collection port, 24 is the floating debris tank, 25 is the cover plate, 26 is the overflow tank, 27 is the honeycomb inclined tube, 28 is the flow stabilizing cylinder, 29 is the sewage discharge pipe, 30 is the water outlet pipe, 31 is the annular overflow plate, 32 is the overflow channel, 33 is the working bridge. Specific embodiments

[0022] In order to better understand the technical content of the present utility model, specific embodiments are provided below, and the present utility model will be further described in conjunction with the accompanying drawings.

[0023] Embodiment

[0024] See Figures 1 to 5, a sludge sedimentation tank provided by the utility model comprises a tank body 1, a water inlet pipe 2, an annular baffle 3 and a sludge scraping mechanism 4 for scraping the sludge at the bottom of the tank body 1. A sewage discharge groove 14 is arranged at the center of the bottom of the tank body 1, and the sewage discharge groove 14 is connected with a sewage discharge pipe 29. The sewage discharge pipe 29 can discharge the sludge precipitated in the tank body 1 from the sewage discharge groove 14. A column 15 is fixed in the sewage discharge groove 14, and a plurality of water outlet ports 16 are arranged around the upper part of the column 15. The water inlet pipe 2 penetrates into the column 15 from bottom to top and is communicated with the plurality of water outlet ports 16. Sewage enters the tank body 1 through the plurality of water outlet ports 16 around. The sludge scraping mechanism 4 is rotationally connected to the upper end of the column 15. The column 15 facilitates the output of sewage and can play a role in supporting the sludge scraping mechanism 4 at the same time. A working bridge 33 is fixed on the tank body 1, and a steady flow cylinder 28 located around the upper part of the column 15 is connected to the working bridge 33. The steady flow cylinder 28 can reduce the output speed of sewage from the water outlet ports 16 and promote the sedimentation speed of sludge in the sewage. A speed reducer 17 for driving the sludge scraping mechanism 4 to rotate is installed on the working bridge 33. The speed reducer 17 is an existing device and will not be elaborated here. The speed reducer 17 drives the sludge scraping mechanism 4 to rotate. The rotating sludge scraping mechanism 4 scrapes the sludge attached to the bottom of the tank body 1 and pushes the scraped sludge towards the sewage discharge groove 14. A scum collection mechanism 18 is fixed on the sludge scraping mechanism 4 to play a role in fixing the scum collection mechanism 18. A floating debris groove 24 is arranged in the sewage discharge groove 14, and a cover plate 25 is rotationally connected in the floating debris groove 24. The cover plate 25 is rotationally connected with the column 15. The scum collection mechanism 18 is connected to the cover plate 25 through a pipe. The scum collection mechanism 18 can drive the cover plate 25 to rotate along the column 15, which is convenient for the scum collection mechanism 18 to rotate and collect floating debris, water blooms and other sundries in the tank body 1. The floating debris groove 24 is communicated with a slag discharge pipe (not marked). The scum collection mechanism 18 collects floating debris, water blooms and other sundries suspended on the water surface of the sewage in the tank body 1. An overflow groove 26 is arranged along the circumference at the upper part of the tank body 1. The annular baffle 3 is connected with the overflow groove 26. The baffle can block floating debris, water blooms and other sundries. A honeycomb inclined tube 27 is installed between the annular baffle 3 and the overflow groove 26. The water in the tank body 1 is filtered by the honeycomb inclined tube 27 and then overflows into the overflow groove 26. The overflow groove 26 is communicated with a water outlet pipe 30.

[0025] See Figure 1 , 2With respect to 5, the scum collection mechanism 18 includes a floating debris collection pipe 19, a filter plate 20, and a connecting pipe 21. The filter plate 20 is fixed on the floating debris collection pipe 19. A groove body 22 is provided on the floating debris collection pipe 19 to facilitate the entry of debris such as scum and water blooms into the floating debris collection port 23. A number of floating debris collection ports 23 are provided on the groove body 22. The filter plate 20 can block debris such as scum and water blooms on one side of the floating debris collection port 23, facilitating the collection of debris such as scum and water blooms. The floating debris collection pipe 19 communicates with the connecting pipe 21. The connecting pipe 21 is connected to the cover plate 25 and communicates with the waste discharge groove, discharging the collected debris into the scum collection tank. The floating debris collection pipe 19 is fixed on the sludge scraping mechanism 4. When the scum collection mechanism 18 rotates along the column 15, the connecting pipe 21 can drive the cover plate 25 to rotate along the column 15 as well. To improve the collection efficiency of scum and water blooms, two sets of the floating debris collection pipe 19, the filter plate 20, and the connecting pipe 21 can be selected and arranged symmetrically.

[0026] See Figure 3 and Figure 5 , the sludge scraping mechanism 4 includes a rotating seat 5, a fixing frame 6, and a number of sludge scraping blades 13. The rotating seat 5 is rotatably connected to the upper end of the column 15. The fixing frame 6 is connected to the rotating seat 5. A number of the sludge scraping blades 13 are connected to the fixing frame 6. A number of the sludge scraping blades 13 are attached to the bottom wall of the pool body 1. The rotating seat 5 can drive the fixing frame 6 to rotate along the column 15. A number of the sludge scraping blades 13 are connected to the fixing frame 6. A number of the sludge scraping blades 13 are attached to the bottom wall of the pool body 1, and thus the sludge on the bottom wall of the pool body 1 is scraped by a number of the sludge scraping blades 13 and pushed into the sewage discharge groove 14.

[0027] Among them, the fixing frame 6 includes a fixing frame 7. A number of the sludge scraping blades 13 are connected to the fixing frame 7. Both ends of the fixing frame 7 are respectively connected to the rotating seat 5 through fixing arms 8. A number of first reinforcing rods 9 are connected inside the fixing frame 7. The first reinforcing rods 9 are connected to the corresponding connecting arms through second reinforcing rods 10 to improve the stability of the fixing frame 6.

[0028] Among them, a support rod 11 is connected to the connecting arm. The end of the support rod 11 is connected to the scum collection mechanism 18. A stabilizing ring 12 for defining the scum collection mechanism 18 is provided on the connecting arm to stabilize the floating debris collection mechanism.

[0029] See Figure Figure 3 , an annular overflow plate 31 is connected to the overflow groove 26. A number of overflow channels 32 are provided above the annular overflow plate 31. The sewage filtered by the honeycomb inclined tube 27 enters the overflow groove 26 through the overflow channels 32.

[0030] In use, sewage enters the upper cavity of the column 15 through the water inlet pipe 2, and the sewage is conveyed to the pool body 1 through a number of water outlets 16 arranged circumferentially, realizing the radial flow of sewage from the center of the pool body 1 to the surroundings. The steady flow cylinder 28 can slow down the speed of sewage input into the pool body 1 and improve the sludge sedimentation effect. The speed reduction drive 17 drives the rotary seat 5 to rotate, and the rotation drives a number of sludge scraping knives 13 fixed on the fixing frame 6 to rotate. The sludge scraping knives 13 attached to the bottom of the pool body 1 scrape the sludge on the bottom wall of the pool body 1 and push the sludge into the sewage discharge tank 14. Moreover, when the sludge scraping mechanism 4 rotates to scrape the sludge, it can drive the floating impurity collection mechanism to rotate on the water surface of the pool body 1. The rotating floating impurity collection pipe 19 can collect sundries such as scum and water blooms on the water surface, and the sundries are discharged into the floating impurity tank 24 through the connecting pipe 21. The sewage after radial sedimentation is filtered again through the honeycomb inclined tube 27 and then overflows into the overflow tank 26, and is output through the water outlet pipe 30.

[0031] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A sludge sedimentation tank, characterized in that: It includes a pool body, a water inlet pipe, an annular baffle, and a sludge scraping mechanism for scraping the sludge at the bottom of the pool body. A sewage discharge trough is provided at the center of the bottom of the pool body. A column is fixed in the sewage discharge trough. A number of water outlets are provided around the upper part of the column. The water inlet pipe penetrates the column from bottom to top and is communicated with the number of water outlets. The sludge scraping mechanism is rotatably connected to the upper end of the column. A working bridge is fixed on the pool body. A speed reducer for driving the sludge scraping mechanism to rotate is installed on the working bridge. A scum collection mechanism is fixed on the sludge scraping mechanism. A floating debris trough is provided in the sewage discharge trough. A cover plate is rotatably connected in the floating debris trough. The cover plate is rotatably connected to the column. The scum collection mechanism is connected to the cover plate through a pipe. An overflow trough is provided along the circumference at the upper part of the pool body. The annular baffle is connected to the overflow trough. A honeycomb inclined tube is installed between the annular baffle and the overflow trough.

2. The sludge sedimentation tank according to claim 1, characterized in that: A steady flow cylinder located around the upper part of the column is connected to the working bridge.

3. A sludge sedimentation tank according to claim 1, characterized in that: The sewage discharge trough is connected to a sewage discharge pipe, and the floating debris trough is communicated with a slag discharge pipe.

4. A sludge sedimentation tank according to claim 1, characterized in that: The scum collection mechanism includes a floating debris collection pipe, a filter plate, and a connecting pipe. The filter plate is fixed on the floating debris collection pipe. A trough body is provided on the floating debris collection pipe. A number of floating debris collection ports are provided on the trough body. The floating debris collection pipe is communicated with the connecting pipe. The connecting pipe is connected to the cover plate. The floating debris collection pipe is fixed on the sludge scraping mechanism.

5. A sludge sedimentation tank as claimed in claim 1, characterized in that: The sludge scraping mechanism includes a rotating seat, a fixing frame, and a number of sludge scraping knives. The rotating seat is rotatably connected to the upper end of the column. The fixing frame is connected to the rotating seat. A number of the sludge scraping knives are connected to the fixing frame. A number of the sludge scraping knives are attached to the bottom wall of the pool body.

6. The sludge sedimentation tank according to claim 4, characterized in that: The fixing frame includes a fixing frame. A number of the sludge scraping knives are connected to the fixing frame. The two ends of the fixing frame are respectively connected to the rotating seat through fixing arms. A number of first reinforcing rods are connected in the fixing frame. The first reinforcing rods are connected to the corresponding connecting arms through second reinforcing rods.

7. The sludge sedimentation tank according to claim 6, characterized in that: A support rod is connected to the connecting arm. The end of the support rod is connected to the scum collection mechanism. A stabilizing ring for limiting the scum collection mechanism is provided on the connecting arm.

8. A sludge sedimentation tank according to claim 1, characterized in that: An annular overflow plate is connected to the overflow trough. A number of overflow channels are provided above the annular overflow plate.

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