Sludge scraping device for secondary sedimentation tank

Abstract

The utility model relates to the technical field of sludge scraping, and provides a secondary sedimentation tank sludge scraping device which comprises a cleaning part for cleaning the bottom wall of a secondary sedimentation tank, a first driving part for driving the cleaning part to rotate around the axis of the secondary sedimentation tank, and a sludge discharging part for discharging sludge cleaned by the cleaning part into the secondary sedimentation tank, the cleaning part is provided with a sludge inlet and a containing cavity which is communicated with the sludge inlet and used for containing sludge, and the sludge discharging part comprises a first sludge discharging pipe communicated with the containing cavity and a sludge discharging pump arranged on the first sludge discharging pipe. The sludge treatment device has the beneficial effect of reducing the possibility that scraped sludge blocks the sludge discharge port to affect the sludge treatment efficiency in the prior art.

Description

Technical Field

[0001] The present application relates to the technical field of sludge scraping, and in particular to a sludge scraping device for a secondary sedimentation tank. Background Art

[0002] The secondary sedimentation tank is an important part of the activated sludge system. Its main function is to separate the sludge, clarify the mixed liquor, concentrate and return the activated sludge. Its working effect can directly affect the effluent quality and return sludge concentration of the activated sludge system. In the prior art, the sludge settled in the secondary sedimentation tank needs to be cleaned regularly. If it is not handled in time, the harmful microorganisms in the sludge will multiply rapidly and directly affect the water quality in the tank.

[0003] In the prior art, when scraping sludge, the existing equipment usually scrapes the sludge at the bottom of the secondary sedimentation tank continuously around the secondary sedimentation tank, so that the sludge is always piled up in the secondary sedimentation tank. As a result, when the sludge is discharged, too much sludge will clog the sludge discharge port, affecting the efficiency of sludge treatment, so further improvement is needed. Utility Model Content

[0004] In order to reduce the possibility that the scraped sludge in the prior art will clog the sludge discharge port and affect the sludge treatment efficiency, the present application provides a secondary sedimentation tank sludge scraping device.

[0005] The present application provides a secondary sedimentation tank sludge scraping device, which adopts the following technical solution:

[0006] A secondary sedimentation tank sludge scraping device comprises a cleaning member for cleaning the bottom wall of the secondary sedimentation tank, a first driving member for driving the cleaning member to rotate around the axis of the secondary sedimentation tank, and a mud discharge member for discharging the sludge cleaned by the cleaning member into the secondary sedimentation tank, the cleaning member is provided with a mud inlet and a accommodating cavity connected to the mud inlet for placing the mud, the mud discharge member comprises a first mud discharge pipe connected to the accommodating cavity and a mud discharge pump arranged on the first mud discharge pipe.

[0007] By adopting the above technical solution, the first driving member is started to drive the cleaning member to rotate along the axis of the secondary sedimentation tank to clean the sludge on the bottom wall of the secondary sedimentation tank. During the rotation of the cleaning member, the sludge will enter the accommodating chamber through the mud inlet on the cleaning member, and the mud discharge pump is started to discharge the sludge in the accommodating chamber through the first mud discharge pipe. Since the first mud discharge pipe is arranged on the cleaning member, the sludge scraped from the cleaning member can be discharged at any time to reduce the possibility that the scraped sludge is blocked at the mud discharge port to affect the sludge treatment efficiency.

[0008] Preferably, the cleaning member includes a plate body and a cleaning scraper arranged on the plate body, the mud inlet and the accommodating chamber are both arranged on the plate body, the mud inlet is arranged on the side wall of the plate body, and the first driving member is installed on the plate body; the cleaning scraper abuts against the bottom wall of the secondary sedimentation tank, and the upper surface of the cleaning scraper is provided with a guide surface connected to the mud inlet, and the height of the guide surface gradually increases towards the direction approaching the mud inlet.

[0009] By adopting the above technical solution, the sludge on the bottom wall of the secondary sedimentation tank is scraped by a cleaning scraper, and a guide surface is provided on the cleaning scraper so that the sludge enters the sludge inlet along the guide surface, thereby accelerating the discharge of the sludge.

[0010] Preferably, a stirring component for stirring the sludge in the accommodating chamber is provided on the plate body.

[0011] By adopting the above technical solution and providing a stirring assembly, some sludge accumulated in the mud inlet and the containing chamber can be stirred to reduce the possibility of compaction and blockage that may affect subsequent sludge cleaning, and to reduce the time spent on manual cleaning after blockage, thereby improving the efficiency of sludge treatment.

[0012] Preferably, the stirring assembly includes a spiral blade rod built into the accommodating chamber and a second driving member driving the spiral blade rod to rotate around its own axis.

[0013] By adopting the above technical solution, the second driving member is started to drive the spiral blade to rotate around its own axis to stir the sludge in the accommodating chamber to reduce the possibility of sludge accumulation. The auger can also drive some sludge to the first sludge discharge pipe to be discharged into the secondary sedimentation tank.

[0014] Preferably, the cleaning scrapers are provided with two and are respectively arranged on the opposite side walls of the plate body, the mud inlets are also correspondingly provided with two and are respectively arranged on the opposite side walls of the plate body, and the accommodating cavity is located in the middle of the bottom inner wall and is protruding with a baffle; the spiral blade rods are provided with two and are respectively arranged on both sides of the baffle, and the first mud discharge pipe is arranged on the upper surface of the plate body.

[0015] By adopting the above technical solution, by arranging two cleaning scrapers on the same plate body, the sludge that has not been cleaned on the bottom wall that has been cleaned before can be cleaned when the cleaning scraper returns, so as to increase the cleaning effect of the bottom wall of the secondary sedimentation tank and reduce the cost wasted when the cleaning scraper returns. Since two cleaning scrapers are provided, two spiral blade rods are provided correspondingly. In order to reduce the possibility that the sludge entering from the mud inlet on one side flows out from the inlet on the other side, a baffle is provided at the bottom of the accommodating chamber, which is located at the middle of the bottom inner wall, so as to divide the accommodating chamber into two chambers, so as to collect and discharge the sludge from the mud inlets on both sides.

[0016] Preferably, the second driving member includes a first bevel gear coaxially fixedly connected to the end of the spiral blade rod, two second bevel gears respectively meshed with the two first bevel gears, a rotating rod fixedly connected to the second bevel gears, and a second driving motor fixedly connected to one of the rotating rods, a rotating wheel is fixedly penetrated on the rotating rod, a belt is wound between the two rotating wheels, and the second driving motor is fixedly connected to the upper surface of the plate body.

[0017] By adopting the above technical solution, since two spiral blade rods are provided, in order to reduce the cost of setting up multiple second drive motors, a rotating wheel and a belt are fixedly passed through the rotating rods on the two spiral blade rods, and a second drive motor can be used to drive the rotation of the two spiral blade rods to stir the sludge in the containing chamber.

[0018] Preferably, an abutment portion is provided at one end of the cleaning scraper away from the mud inlet, the abutment portion is arranged in an arc shape close to the bottom wall of the secondary sedimentation tank, and the abutment portion is made of rubber.

[0019] By adopting the above technical solution and providing the abutment portion supported by rubber, the possibility of damaging the bottom wall of the secondary sedimentation tank when the cleaning scraper scrapes the bottom wall of the sedimentation tank is reduced.

[0020] Preferably, the area of ​​the accommodating cavity in the cross section gradually decreases in a direction from the mud inlet toward the first mud discharge pipe.

[0021] By adopting the above technical solution, the area of ​​the accommodating chamber in the cross section gradually decreases from the mud inlet toward the first mud discharge pipe, so that the accommodating chamber is configured with a tapered opening, so that the mud moves toward the first mud discharge pipe, reducing the possibility of accumulation in the accommodating chamber.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. By arranging the first mud discharge pipe on the cleaning part, the sludge scraped from the cleaning part can be discharged at any time, so as to reduce the possibility that the scraped sludge is blocked at the mud discharge port to affect the sludge treatment efficiency.

[0024] 2. By providing a stirring component, some sludge accumulated in the mud inlet and the containing chamber can be stirred to reduce the possibility of compaction and blockage that may affect subsequent sludge cleaning, and to reduce the time spent on manual cleaning after blockage, thereby improving the efficiency of sludge treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application;

[0026] Figure 2 It is a schematic diagram of the internal structure in Example 1 of the present application;

[0027] Figure 3 is a schematic structural diagram of the stirring assembly in Example 1 of the present application;

[0028] Figure 4 It is a schematic diagram of the structure of the stirring assembly in Example 2 of the present application.

[0029] Explanation of the reference numerals: 1. Second sedimentation tank; 11. Support platform; 2. Cleaning member; 21. Plate body; 211. Mud inlet; 212. Accommodating chamber; 213. Mounting groove; 22. Cleaning scraper; 221. Guide surface; 222. Abutment portion; 3. First driving member; 31. Rotating shaft; 32. First driving motor; 4. Mud discharge member; 41. First mud discharge pipe; 42. Connecting pipe; 43. Mud discharge pump; 44. Second mud discharge pipe; 5. Stirring assembly; 51. Spiral blade rod; 52. Second driving member; 521. First bevel gear; 522. Second bevel gear; 523. Rotating rod; 524. Second driving motor; 6. Cover plate; 7. Baffle; 8. Rotating wheel; 81. Belt. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-4 , further details of this application are given.

[0031] The embodiment of the present application discloses a sludge scraping device for a secondary sedimentation tank.

[0032] Embodiment 1:

[0033] A secondary sedimentation tank sludge scraping device, referring to Figure 1 , Figure 2 It includes a cleaning member 2 for cleaning the bottom wall of the secondary sedimentation tank 1, a first driving member 3 for driving the cleaning member 2 to rotate around the axis of the secondary sedimentation tank 1, and a mud discharge member 4 for discharging the mud cleaned by the cleaning member 2 into the secondary sedimentation tank 1.

[0034] Among them, the cleaning piece 2 includes a plate body 21 and a cleaning scraper 22 arranged on the plate body 21. The side wall of the plate body 21 is provided with a mud inlet 211, and the body is provided with a accommodating chamber 212 connected to the mud inlet 211. In this embodiment, the area of ​​the accommodating chamber 212 in the cross section gradually decreases in the direction away from the mud inlet 211, and the cleaning scraper 22 can be integrally formed with the body, and the cleaning plate body 21 can also be fixedly connected to the plate body 21 by bolts so that it can be replaced in case of subsequent damage.

[0035] A guide surface 221 connected to the mud inlet 211 is formed on the upper surface of the cleaning scraper 22 . The height of the guide surface 221 gradually increases towards the mud inlet 211 , so that the scraped sludge enters the accommodating chamber 212 along the guide surface 221 and the mud inlet 211 .

[0036] Furthermore, in order to reduce the possibility of scratching the bottom wall of the secondary sedimentation tank 1 when the cleaning scraper 22 scrapes sludge, in the present embodiment, an abutment portion 222 is provided at one end of the cleaning scraper 22 away from the mud inlet 211, and the abutment portion 222 is made of elastic rubber, and the abutment portion 222 is arranged in an arc shape close to the bottom wall of the secondary sedimentation tank 1. It should be noted that the abutment portion 222 can be fixedly connected to the cleaning scraper 22 by bonding.

[0037] The first driving member 3 is mounted on the plate body 21. Specifically, the first driving member 3 includes a rotating shaft 31 and a first driving motor 32. The rotating shaft 31 is vertically arranged, and the lower end of the rotating shaft 31 is rotatably connected to the middle of the bottom inner wall of the second sedimentation tank 1. The outer peripheral wall of the rotating shaft 31 is fixedly connected to one end face of the plate body 21, and the other end of the body is abutted against the inner wall of the second sedimentation tank 1. A supporting platform 11 is provided on the second sedimentation tank 1 for the upper end of the rotating shaft 31 to be rotatably connected. The supporting platform 11 extends to the side wall of the second sedimentation tank 1. The first driving motor 32 is fixedly connected to the upper surface of the supporting platform 11. The output shaft of the first driving motor 32 is rotatably arranged on the supporting platform 11 and fixedly connected to the rotating shaft 31.

[0038] The first driving motor 32 is started to drive the rotation of the rotating shaft 31 , thereby driving the rotating rod 523 and the plate body 21 to rotate in turn, so that the abutting portion 222 on the cleaning scraper 22 scrapes the sludge on the bottom inner wall of the secondary sedimentation tank 1 .

[0039] Among them, the mud discharge member 4 includes a first mud discharge pipe 41 connected to the accommodating cavity 212, a connecting pipe 42 arranged on the first mud discharge pipe 41, a mud discharge pump 43 arranged on the first mud discharge pipe 41 and a second mud discharge pipe 44 arranged on the mud discharge pipe. The first mud discharge pipe 41 is fixedly penetrated through the side wall of the plate body 21 away from the mud inlet 211, and extends to the accommodating cavity 212 and is connected to the accommodating cavity 212. Several first mud discharge pipes 41 are arranged at intervals along the length direction of the plate body 21.

[0040] Among them, the connecting pipe 42 is a multi-way pipe, which is connected to multiple first mud discharge pipes 41. The inlet end of the mud discharge pump 43 is connected to the discharge end of the first mud discharge pipe 41, and the inlet end of the second mud discharge pipe 44 is connected to the discharge end of the mud discharge pump 43. In this embodiment, the second mud discharge pipe 44 is exposed to the second sedimentation tank 1.

[0041] The sludge discharge pump 43 is started to suck the sludge in the accommodating chamber 212 so as to be discharged along the first sludge discharge pipe 41 , the connecting pipe 42 , the sludge discharge pump 43 and the second sludge discharge pipe 44 .

[0042] Reference Figure 2 , Figure 3 Furthermore, in order to reduce the possibility of sludge clogging the accommodating chamber 212 and affecting the subsequent suction of the sludge, in this embodiment, a stirring component 5 for stirring the sludge in the accommodating chamber 212 is provided on the plate body 21. Specifically, the stirring component 5 includes a spiral blade rod 51 built into the accommodating chamber 212 and a second driving member 52 for driving the spiral blade rod 51 to rotate around its own axis, wherein the length direction of the spiral blade rod 51 is parallel to the length direction of the plate body 21, and the two ends of the spiral blade rod 51 are respectively rotatably connected to the opposite side walls of the plate body 21 located in the accommodating chamber 212.

[0043] In this embodiment, the second driving member 52 includes a first bevel gear 521 coaxially fixedly connected to the spiral blade rod 51, a second bevel gear 522 meshing with the first bevel gear 521, a rotating rod 523 fixedly connected to the second bevel gear 522, and a second driving motor 524 driving the second bevel gear 522 to rotate. Among them, the navigation surface of the plate body 21 is provided with a mounting groove 213 for mounting the first bevel gear 521, and the plate body 21 is provided with a cover plate 6 in the mounting groove 213, wherein one end of the spiral blade rod 51 is penetrated through the side wall of the accommodating cavity 212 and extends into the mounting groove 213 for rotational connection. The second driving motor 524 is fixedly connected to the upper surface of the second driving motor 524, and the output shaft of the second driving motor 524 is rotationally penetrated through the cover plate 6 and extends into the mounting groove 213, and is fixedly connected to the rotating rod 523. The second driving motor 524 is started to drive the rotating rod 523, the second bevel gear 522 and the spiral blade rod 51 to rotate in sequence to stir the sludge in the accommodating chamber 212 to reduce the possibility of blocking the accommodating chamber 212 and affecting the subsequent suction of the sludge.

[0044] The implementation principle of the secondary sedimentation tank sludge scraping device of the embodiment of the present application is as follows: the first driving motor 32 is started to drive the rotation of the rotating shaft 31, thereby driving the rotating rod 523 and the plate body 21 to rotate in turn, so that the abutment portion 222 on the cleaning scraper 22 scrapes the sludge on the bottom inner wall of the secondary sedimentation tank 1. In the process of scraping the sludge, the sludge discharge pump 43 is started to discharge the sludge. After a period of time, after the cleaning scraper 22 has worked for a period of time, the second driving motor 524 is started to drive the spiral blade rotating rod 523 to rotate, so as to stir the sludge in the accommodating chamber 212.

[0045] Embodiment 2:

[0046] Reference Figure 4, which is different from Example 1, is that two cleaning scrapers 22 are provided and are respectively arranged on the opposite side walls of the plate body 21, and two mud inlets 211 are also correspondingly provided and are respectively arranged on the opposite side walls of the plate body 21, and the accommodating chamber 212 is located in the middle of the bottom inner wall and protrudes and is fixed with a baffle 7, and the upper end of the baffle 7 is fixedly connected to the top inner wall of the accommodating chamber 212 to divide the accommodating chamber 212 into two chambers. In this embodiment, two spiral blade rods 51 are provided and are respectively arranged on both sides of the baffle 7. At this time, the first mud discharge pipe 41 is also correspondingly provided with two rows and is respectively arranged corresponding to the two chambers. The first mud discharge pipe 41 is fixedly penetrated through the upper surface of the plate body 21 and extends into the chamber.

[0047] Among them, for the rotation of the two spiral blade rods 51, the two spiral blade rods 51 are respectively fixedly penetrated with a first bevel gear 521, the two first bevel gears 521 are respectively meshed with a second bevel gear 522, a rotating wheel 8 is rotatably penetrated on the rotating rod 523, a belt 81 is wound between the two rotating wheels 8, and at this time, the output shaft of the second drive motor 524 is fixedly connected to one of the rotating rods 523. Start the second drive motor 524, and drive the rotation of the rotating rod 523, the second bevel gear 522 and the first bevel gear 521 in turn, thereby driving the rotation of the spiral blade rod 51.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sludge scraping device for a secondary sedimentation tank, characterized in that: The invention comprises a cleaning member (2) for cleaning the bottom wall of a secondary sedimentation tank (1), a first driving member (3) for driving the cleaning member (2) to rotate around the axis of the secondary sedimentation tank (1), and a mud discharge member (4) for discharging mud cleaned by the cleaning member (2) into the secondary sedimentation tank (1), wherein the cleaning member (2) is provided with a mud inlet (211) and a receiving chamber (212) connected to the mud inlet (211) for receiving mud, and the mud discharge member (4) comprises a first mud discharge pipe (41) connected to the receiving chamber (212) and a mud discharge pump (43) arranged on the first mud discharge pipe (41).

2. A secondary sedimentation tank sludge scraping device according to claim 1, characterized in that: The cleaning member (2) comprises a plate body (21) and a cleaning scraper (22) arranged on the plate body (21); the mud inlet (211) and the accommodating chamber (212) are both arranged on the plate body (21); the mud inlet (211) is arranged on a side wall of the plate body (21); and the first driving member (3) is mounted on the plate body (21); the cleaning scraper (22) abuts against the bottom wall of the secondary sedimentation tank (1); a guide surface (221) connected to the mud inlet (211) is provided on the upper surface of the cleaning scraper (22); and the height of the guide surface (221) gradually increases in a direction approaching the mud inlet (211).

3. A secondary sedimentation tank sludge scraping device according to claim 2, characterized in that: The plate body (21) is provided with a stirring component (5) for stirring the sludge in the accommodating cavity (212).

4. A secondary sedimentation tank sludge scraping device according to claim 3, characterized in that: The stirring assembly (5) comprises a spiral blade rod (51) built into the accommodating chamber (212), and a second driving member (52) driving the spiral blade rod (51) to rotate around its own axis.

5. A secondary sedimentation tank sludge scraping device according to claim 4, characterized in that: Two cleaning scrapers (22) are provided and are respectively arranged on opposite side walls of the plate body (21); two mud inlets (211) are also correspondingly provided and are respectively arranged on opposite side walls of the plate body (21); a baffle (7) is provided protruding from the middle of the bottom inner wall of the accommodating cavity (212); two spiral blade rods (51) are provided and are respectively arranged on both sides of the baffle (7); and the first mud discharge pipe (41) is provided on the upper surface of the plate body (21).

6. A secondary sedimentation tank sludge scraping device according to claim 5, characterized in that: The second driving member (52) comprises a first bevel gear (521) coaxially fixedly connected to the end of the spiral blade rod (51), two second bevel gears (522) respectively meshed with the two first bevel gears (521), a rotating rod (523) fixedly connected to the second bevel gear (522), and a second driving motor (524) fixedly connected to one of the rotating rods (523); a rotating wheel (8) is fixedly passed through the rotating rod (523); a belt (81) is wound between the two rotating wheels (8); and the second driving motor (524) is fixedly connected to the upper surface of the plate body (21).

7. A secondary sedimentation tank sludge scraping device according to claim 2, characterized in that: An abutment portion (222) is provided at one end of the cleaning scraper (22) away from the mud inlet (211), the abutment portion (222) being arranged in an arc shape close to the bottom wall of the secondary sedimentation tank (1), and the abutment portion (222) is made of rubber.

8. A secondary sedimentation tank sludge scraping device according to claim 2, characterized in that: The area of ​​the accommodating cavity (212) in the cross section gradually decreases in a direction from the mud inlet (211) towards the first mud discharge pipe (41).

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