Sludge scraping device for inclined tube sedimentation tank and inclined tube sedimentation tank

Abstract

The utility model discloses a mud scraping device for an inclined tube sedimentation tank and the inclined tube sedimentation tank, and belongs to the technical field of sedimentation tank cleaning. The mud scraper comprises a mud scraper body and a driving shaft connected with the mud scraper body, the whole driving shaft is of a hollow structure and is divided into an upper section and a lower section, and the two sections are connected through a four-way connector; interfaces on the two sides of the four-way connector are connected with air outlet branch pipes through electromagnetic valves, and flushing holes are formed in the air outlet branch pipes; and an electromagnetic valve is also arranged between the four-way connector and the lower section of the driving shaft. The mud scraping device disclosed by the utility model has a washing function, the inclined pipe and the bottom mud bucket are washed along with the rotation of the driving shaft, a complicated washing pipeline is not required to be arranged, production halt is not required, the labor intensity and difficulty of manual operation are simplified, and the quality of effluent after the sedimentation tank is washed is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sedimentation tank cleaning, and more specifically relates to a mud scraping device for an inclined tube sedimentation tank and the inclined tube sedimentation tank. Background Art

[0002] Inclined tube (plate) sedimentation tank refers to a sedimentation tank with inclined tubes (plates) in the sedimentation area. According to the "shallow sedimentation" theory, the inclined tubes (plates) in the sedimentation tank can shorten the hydraulic retention time, improve the sedimentation tank effect and save floor space. The surface hydraulic load is generally twice that of an ordinary sedimentation tank, and is widely used in sewage treatment sedimentation tanks. During the operation of the sedimentation tank, when the water flows from bottom to top, the suspended matter in the water settles and hits the side wall of the inclined tube, and then settles on the side wall of the inclined tube, and the water flows out of the inclined tube and enters the clear water channel. The wall of the inclined tube (plate) will adhere to or accumulate flocs, causing the cross-sectional area inside the inclined tube (plate) to decrease, while the sewage flow rate increases, resulting in an increase in the turbidity of the effluent. In the process of water entering the clear water area, the flow rate decreases due to the increase in cross-sectional area, and part of the suspended matter in the water flow settles back on the surface of the inclined tube; after a period of time, the inclined tube will be blocked, affecting the sedimentation effect. Therefore, when the sludge accumulates to a certain amount, it is necessary to flush the inclined tube (plate) to clean the sludge on the inclined tube (plate) to ensure the water quality of the effluent.

[0003] In addition, the mud hopper is located at the bottom of the sedimentation tank. Under the action of gravity, the suspended matter in the sewage will settle into the mud hopper. The sludge in the conical mud hopper will not be completely discharged and will accumulate. Therefore, the mud hopper also needs to be flushed regularly to ensure the efficiency of mud discharge.

[0004] At present, the commonly used methods for flushing inclined tube (plate) fillers are: (1) manual flushing, which generally stops the water inlet and lowers the sewage level in the sedimentation tank. The high-pressure water gun is used to flush the tank manually. After the flushing is completed, the system resumes operation. This method will inevitably cause the system to stop operating and affect the stability of the system operation. The effect is not obvious. Only the upper part of the inclined tube (plate) can be cleaned, and the middle and lower parts cannot be cleaned. The flushing effect is not good. At the same time, the flushing process is cumbersome, the flushing labor intensity is high, the high-pressure water gun is easy to damage the inclined tube filler, and the flushing time is long.

[0005] (2) An air flushing main pipe, valve and branch pipe are set up, and holes are opened on the branch pipe. After the blower and the main pipe valve are opened, the air sprayed from the small holes on the branch pipe merges with the water to generate a water flow to flush the inclined tube (plate) filler body; since the water supply cannot be stopped during the operation of the sedimentation tank, this method requires dividing the sedimentation tank into multiple areas to flush the filler in turn, and a large number of pipes and valves are set up, which is costly and difficult to control.

[0006] Conventional scrapers are mainly used to remove sediments in sedimentation tanks and collect them in mud collection tanks, and then use gravity or mud pumps to discharge the sediments in the mud collection tanks from the sedimentation tanks through mud discharge pipes. However, they cannot achieve a good cleaning effect on the sludge on the inclined tubes (plates).

[0007] For example, the application with Chinese patent publication number CN 206910889 U discloses an inclined tube sedimentation tank that uses a suspended scraper to scrape mud. The application includes a sedimentation tank, an inclined tube area arranged in the middle of the sedimentation tank, and a mud accumulation area arranged in the lower part of the sedimentation tank; a support platform is arranged above the sedimentation tank, a scraper is arranged on the support platform, and a mud discharge pipe is arranged at the bottom of the sedimentation tank; a scraper platform inclined toward the mud discharge pipe is arranged at the bottom of the sedimentation tank, and the scraper blade of the scraper is arranged parallel to the scraper platform, and the bottom surface of the scraper blade is parallel to and fits with the surface of the scraper platform; the scraper blade can continuously rotate to drive the mud and water in the mud accumulation area to the mud discharge pipe and then be discharged out of the sedimentation tank.

[0008] For another example, the application with Chinese patent publication number CN 210786350 U discloses a scraping mechanism for a secondary sedimentation tank and a secondary sedimentation tank. The scraping mechanism of the application includes: a driving device, which drives the scraping bridge of the scraping mechanism to rotate around the center of the secondary sedimentation tank; a central scraping mechanism, which includes a first scraping blade and a connecting piece connecting the first scraping blade to the scraping bridge, the first scraping blade extending radially in the central area of ​​the secondary sedimentation tank to scrape the sludge in the central area into the sludge collection bucket; a peripheral scraping mechanism, which includes: a second scraping blade connected to the scraping bridge through a connecting piece, the second scraping blade extending radially in the peripheral area of ​​the secondary sedimentation tank; a sludge suction pipe installed near the second scraping blade; a fan, which inputs air into the sludge suction pipe, thereby sucking the sludge into the sludge suction pipe; and a sludge guide pipe connected to the sludge suction pipe, the sludge guide pipe leading to the sludge collection bucket. Utility Model Content

[0009] 1. Problems to be solved

[0010] In view of at least some of the problems existing in the above prior art, the utility model proposes a sludge scraper device for an inclined tube sedimentation tank and an inclined tube sedimentation tank, which aims to solve the problem that the existing scraper can only clean the sludge at the bottom of the sedimentation tank but cannot clean the sludge on the inclined tube (plate).

[0011] 2. Technical solution

[0012] In order to solve the above problems, the technical solution adopted by the utility model is as follows:

[0013] The utility model discloses a scraper device for an inclined tube sedimentation tank, comprising a scraper body and a driving shaft connected to the scraper body. The driving shaft is a hollow structure as a whole. The driving shaft is radially connected to an air outlet branch pipe through an electromagnetic valve. A flushing hole is provided on the air outlet branch pipe.

[0014] Furthermore, the driving shaft is divided into two sections, an upper section and a lower section, and the two sections are connected via a four-way joint; the interfaces of the four-way joint on both sides are connected to the air outlet branch pipe via a solenoid valve.

[0015] Furthermore, a solenoid valve is provided between the four-way joint and the lower section of the drive shaft.

[0016] Furthermore, a fixing rod is provided between the air outlet branch pipe and the scraping wall of the scraper body.

[0017] Furthermore, the driving shaft is connected to a blowing device through an aeration pipeline.

[0018] Furthermore, the driving shaft is connected to an aeration pipeline via a universal joint at the top thereof, and the aeration pipeline is a hose.

[0019] The utility model also provides an inclined tube sedimentation tank, which comprises a sedimentation tank, wherein the inclined tube and the above-mentioned mud scraping device are arranged in the sedimentation tank; wherein the air outlet branch pipe of the mud scraping device is located below the inclined tube.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] (1) The utility model discloses a scraper device for an inclined tube sedimentation tank, comprising a scraper body and a drive shaft connected to the scraper body, wherein an outlet branch pipe is radially connected to the drive shaft; the scraper device of the utility model can clean the sludge in the hopper through the scraper body, and the air flowing out of the outlet branch pipe contacts water to generate airflow, which can flush the inclined tube filler. In addition, the outlet branch pipe rotates synchronously with the drive shaft, thereby realizing 360° rotation, covering the entire area of ​​the inclined tube, and thus cleaning the sludge at various positions of the inclined tube.

[0023] (2) The utility model is a mud scraper device for an inclined tube sedimentation tank, wherein the drive shaft is divided into two sections, an upper section and a lower section, and the two sections are connected by a four-way joint; wherein the two side interfaces of the four-way joint are connected to the air outlet branch pipe through an electromagnetic valve, and the bottom interface is connected to the lower section of the drive shaft through an electromagnetic valve; by arranging electromagnetic valves at each interface, the air flow direction can be freely switched; according to actual needs, the air can enter the air outlet branch pipe to clean the inclined tube, or enter the lower section of the drive shaft to clean the bottom mud bucket.

[0024] (3) The utility model provides a scraper device for an inclined tube sedimentation tank. The top of the driving shaft is provided with a universal joint connected to an aeration pipe, and the aeration pipe is a hose, thereby avoiding interference between the rotation of the driving shaft and the aeration pipe, and ensuring that the air source can smoothly pass into the outlet branch pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a mud scraping device for an inclined tube sedimentation tank of the utility model;

[0026] In the figure: 1. Sludge scraper body; 2. Drive shaft; 3. Solenoid valve; 4. Air outlet branch pipe; 41. Flushing hole; 5. Four-way joint; 6. Fixing rod; 7. Aeration pipe; 8. Blowing device; 9. Universal joint; 10. Sedimentation tank; 11. Inclined pipe. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with specific embodiments.

[0028] like Figure 1 As shown, a scraper device for an inclined tube sedimentation tank in this embodiment includes a scraper body 1 and a driving shaft 2 connected to the scraper body 1 .

[0029] The scraper body 1 is used to clean the sludge at the bottom of the sedimentation tank; the drive shaft 2 is used to drive the scraper body 1 to rotate.

[0030] Specifically, the driving shaft 2 is a hollow structure as a whole, which is divided into two sections, an upper section and a lower section; and the upper and lower sections are connected by a four-way joint 5.

[0031] A universal joint 9 is provided at the top of the upper section of the driving shaft 2 , and the universal joint 9 is connected to a blowing device 8 through an aeration pipe 7 .

[0032] Preferably, the blowing device 8 is a blower or an air compressor. The aeration pipe 7 is a hose. Of course, the upper section of the drive shaft 2 also needs to be connected to a drive motor for driving the entire drive shaft 2 to rotate.

[0033] The interfaces of the four-way joint 5 on both sides are connected to the outlet branch pipe 4 , and the outlet branch pipe 4 is provided with a flushing hole 41 .

[0034] Furthermore, solenoid valves 3 are provided on the interfaces between the four-way joint 5 , the outlet branch pipe 4 and the lower section of the driving shaft 2 .

[0035] In addition, in order to improve the stability of the air outlet branch pipe 4, a fixing rod 6 is provided between the air outlet branch pipe 4 and the scraping wall of the scraper body 1.

[0036] This embodiment also provides an inclined tube sedimentation tank, which includes a sedimentation tank 10, an inclined tube 11 and a scraper device arranged in the sedimentation tank 10. The scraper device is a scraper device for an inclined tube sedimentation tank as described above, and the outlet branch pipe 4 of the scraper device is located below the inclined tube 11.

[0037] In the inclined tube sedimentation tank of the present embodiment, during normal operation, the water level is at the position of the water collecting tank, and the outlet water enters the outlet channel through the water collecting tank. After a period of time, the sludge on the inclined tube 11 needs to be cleaned. Turn on the air blowing device 8, and at this time, the outlet branch pipe 4 rotates with the rotation of the drive shaft 2; at the same time, the solenoid valves 3 on the two side interfaces of the four-way joint 5 are opened, and the solenoid valve 3 on the bottom interface is closed, so that air can smoothly enter the outlet branch pipe 4, and the air sprayed from the flushing hole 41 on the outlet branch pipe 4 contacts with water to generate airflow, flushing the inclined tube 11. The suspended matter after flushing gradually settles to the bottom of the inclined tube sedimentation tank under the action of gravity, and is discharged out of the tank under the action of the mud scraper.

[0038] When the bottom sludge accumulates and the scraper cannot completely clean it, the bottom mud bucket needs to be flushed. At this time, close the solenoid valve 3 on the outlet branch pipe 4, open the solenoid valve 3 on the lower part of the drive shaft, and let the air enter the bottom mud bucket area to flush the bottom sludge and prevent sludge accumulation.

[0039] In the present embodiment, a sludge scraper has an automatic flushing function and an underwater solenoid valve. With the rotation of the drive shaft 2, the flushing of the sludge bucket 11 and the bottom sludge bucket is realized. There is no need to set up a complicated flushing pipeline and stop production. The labor intensity and difficulty of manual operation are simplified, and the water quality of the effluent after flushing the sludge tank is improved. In addition, the automatic flushing effect of the sludge bucket 11 can be achieved by setting the operation cycle and operation time of the air blowing device 8 and adjusting the rotation speed of the drive shaft 2, and it can be adjusted at any time according to the actual operation situation.

[0040] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A mud scraper device for an inclined tube sedimentation tank, comprising a mud scraper body (1) and a drive shaft (2) connected to the mud scraper body (1), characterized in that: The driving shaft (2) is a hollow structure as a whole. The driving shaft (2) is connected to an air outlet branch pipe (4) in the radial direction through an electromagnetic valve (3). A flushing hole (41) is provided on the air outlet branch pipe (4). The driving shaft (2) is divided into two sections, an upper section and a lower section, and the two sections are connected via a four-way joint (5); the interfaces on both sides of the four-way joint (5) are connected to the air outlet branch pipe (4) via a solenoid valve (3).

2. A mud scraper device for an inclined tube sedimentation tank according to claim 1, characterized in that: A solenoid valve (3) is provided between the four-way joint (5) and the lower section of the drive shaft (2).

3. A mud scraper device for an inclined tube sedimentation tank according to claim 2, characterized in that: A fixing rod (6) is provided between the air outlet branch pipe (4) and the scraping wall of the scraper body (1).

4. A mud scraper device for an inclined tube sedimentation tank according to any one of claims 1 to 3, characterized in that: The driving shaft (2) is connected to a blowing device (8) via an aeration pipeline (7).

5. The sludge scraping device for an inclined tube sedimentation tank according to claim 4, characterized in that: The driving shaft (2) is connected to the aeration pipe (7) via a universal joint (9) at the top thereof, and the aeration pipe (7) is a hose.

6. An inclined tube sedimentation tank, comprising a sedimentation tank (10) and an inclined tube (11) arranged in the sedimentation tank (10), characterized in that: The sedimentation tank (10) is further provided with a sludge scraping device as claimed in any one of claims 1 to 5, wherein the air outlet branch pipe (4) is located below the inclined pipe (11).

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