Sewage biological treatment device with double rotating shafts

Abstract

The utility model relates to the technical field of water treatment equipment, and discloses a sewage biological treatment device with double rotating shafts, which comprises a first rotating cage with a first disc and a first rotating shaft, and a second rotating cage with a second rotating shaft and a second disc, the first rotating shaft is sleeved with the second rotating shaft, and the second rotating shaft and the first rotating shaft are coaxially arranged in a spaced mode. The first disc is fixedly connected with the first rotating shaft, and the second disc is fixedly connected with the second rotating shaft; and the first rotating shaft and the second rotating shaft are respectively connected with a motor and can rotate independently. The utility model has the beneficial effects that the first rotating cage and the second rotating cage are coaxially arranged, and the first rotating cage and the second rotating cage are driven by different motors to independently rotate, so that different fillers and different rotating speeds can be arranged on the first rotating cage and the second rotating cage; and the sewage treatment capacity of the biological sewage treatment device can be improved through different fillers and different rotating speeds.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment equipment, in particular to a sewage biological processor with double rotating shafts. Background Art

[0002] The current water treatment process can be roughly divided into three categories based on the principle, namely physical treatment, chemical treatment and biological treatment. Biological treatment is to achieve the purpose of degrading pollutants in water through various metabolic effects of microorganisms. Biological treatment is economical and efficient. It is the most commonly used treatment process in sewage plants and an important guarantee for water environmental safety. Biological treatment mainly includes activated sludge method, biofilm method, oxidation ditch, etc.

[0003] The biofilm method mainly includes bio-rotating disc, bio-rotating cage, fluidized bed, etc. In recent years, with the continuous development and research of new fillers and new technologies, the biofilm method has developed rapidly. Compared with the activated sludge method, it occupies a small area, has low construction costs, low energy consumption, and has broad application prospects.

[0004] The biological cage achieves the purpose of continuously purifying sewage through the continuous contact between the large amount of biofilm attached and grown on the surface and filler and the sewage. The traditional biological cage reactor is composed of a water collection tank, a contact oxidation tank, a motor, a secondary sedimentation tank, etc.

[0005] However, some biological cages in the prior art have a small rotating disc area and low sewage treatment efficiency; while some biological cages use a large rotating disc and are filled with more fillers, which makes the production cost higher. Therefore, it is of practical significance to develop a new type of sewage biological treatment device to increase the contact with sewage and improve the sewage treatment efficiency. Summary of the invention

[0006] In order to overcome the problems of high production cost and low sewage treatment efficiency of the biological rotating cage device in the prior art, the utility model proposes a sewage biological processor with double rotating shafts, and its detailed technical scheme is as follows:

[0007] A sewage biological treatment device with a dual rotating shaft comprises a first rotating cage with a first disc and a first rotating shaft, and also comprises a second rotating cage with a second rotating shaft and a second disc; the second rotating shaft is sleeved on the outside of the first rotating shaft and is coaxially spaced from the first rotating shaft; the first disc is fixedly connected to the first rotating shaft, and the second disc is fixedly connected to the second rotating shaft; the first rotating shaft and the second rotating shaft are respectively connected to motors and can rotate independently of each other.

[0008] Furthermore, the second rotating cage includes a second motor, a second rotating shaft, a second disc and a hexagonal frame; the second rotating shaft is symmetrically distributed on the left and right sides, and the second motor is connected to the second rotating shaft through a transmission device on the left and right sides; the hexagonal frame is fixedly connected to the second rotating shaft on the left and right sides, and is fixedly connected to the second disc on the inner sides of the upper and lower ends.

[0009] Furthermore, the second disc is a hollow rectangular column structure, with water permeable holes opened on the upper and lower surfaces, and a feeding hole and a cover plate corresponding to the feeding hole opened on the top end surface.

[0010] Furthermore, the transmission device is a second gear and a second rack meshing with the second gear; the second motor is provided with an output shaft, and the second gear is fixedly connected to the output shaft and one end of the second rotating shaft respectively.

[0011] Furthermore, the first rotating cage includes a first motor symmetrically arranged on the left and right sides, a first rotating shaft drivingly connected to the first motor, and a plurality of first discs fixed on the first rotating shaft.

[0012] Furthermore, the first disc is a hollow cylindrical structure, with a feeding hole and a cover plate provided on the side surface; a through hole begins to be formed in the middle of the circular surface, and a plurality of circular water-permeable holes begin to be formed around the through hole.

[0013] Furthermore, the first disc and the second disc are both made of stainless steel.

[0014] Furthermore, it also includes a reaction tank with a water inlet and a water outlet.

[0015] According to any of the above embodiments, the utility model has at least the following beneficial effects: the utility model arranges the first rotating cage and the second rotating cage coaxially, uses different motors to drive the first rotating cage and the second rotating cage to rotate independently, can arrange different fillers and different rotation speeds on the first rotating cage and the second rotating cage, and can improve the sewage treatment capacity of the sewage biological processor by the difference in fillers and rotation speeds. At the same time, the second disc on the second rotating cage will stir the sewage during the rotation process, accelerate the contact between the sewage and the biofilm, and thus increase the sewage treatment capacity of the sewage biological processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the first rotating cage of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the first disc of the utility model.

[0019] Figure 4It is a structural schematic diagram of the second rotating cage of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the second disc of the utility model.

[0021] Figure 6 It is a structural schematic diagram of another embodiment of the utility model.

[0022] in:

[0023] 100—first rotating cage; 200—second rotating cage; 300—reaction tank;

[0024] 110—first motor; 120—first gear; 130—first rack; 140—first rotating shaft;

[0025] 150—first disc;

[0026] 210 — second motor; 220 — second gear; 230 — second rack; 240 — second rotating shaft; 250 — second disk; 260 — hexagonal frame;

[0027] 151 - through hole; 152 - feeding hole; 153 - cover plate; 154 - water permeable hole. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] A sewage biological treatment device with two rotating shafts, such as Figure 1 As shown, it includes a first rotating cage 100 provided with a circular disc and a second rotating cage 200 provided with a rectangular disc, and the second rotating shaft of the second rotating cage 200 is sleeved on the first rotating shaft of the first rotating cage 100. The first rotating shaft and the second rotating shaft are both placed horizontally and coaxially spaced, and the first rotating shaft and the second rotating shaft can be driven by different motors, and the first rotating cage 100 and the second rotating cage 200 can rotate independently of each other during the rotation process.

[0030] The structure of the first rotating cage 100 is as follows Figure 2As shown, it includes a first motor 110 symmetrically arranged on both sides, a first gear 120 located on both sides of the output shaft of the first motor 110 and the first rotating shaft 140, a first rack 130 connecting the first gear of the first motor 110 and the first gear of the first rotating shaft 140, a first rotating shaft 140 connecting the first gears 120 on both sides, and a plurality of first disks 150 fixed on the first rotating shaft 140. The first disks 150 are shown in FIG. Figure 3 As shown, it is a cylindrical hollow disc-shaped disc, which can be filled with fillers inside, and a feeding hole 152 is opened on the side surface, and a corresponding cover plate 153 is set on the feeding hole 152. A through hole 151 for the first rotating shaft 140 to pass through is opened in the middle of the circular surface of the first disc 150, and a plurality of circular water-permeable holes 154 are opened around the through hole 151. The through hole 151 is used for the first rotating shaft 140 to pass through and be fixedly connected to the first rotating shaft 140; the feeding hole 152 is used to add fillers into the first disc 150; and the water-permeable holes 154 are used for sewage to enter and contact with the biofilm on the fillers.

[0031] The structure of the second rotating cage 200 is as follows Figure 4 As shown, it includes a second motor 210, a second gear 220, a second rack 230, a second rotating shaft 240, a second disk 250 and a hexagonal frame 260. The second motor 210 drives the second gear 220 to rotate, the second gear 220 drives the second rack 240 to rotate, the second rack 240 drives the second gear 220 connected to the second rotating shaft 240 to rotate, thereby driving the second rotating shaft 240 to rotate. The hexagonal frame 260 is fixedly connected to the second rotating shaft 240 on the left and right sides, and rotates synchronously with the second rotating shaft 240. The second disk 250 is fixedly connected to the upper and lower sides of the hexagonal frame 260. The structure of the second disk 250 is as shown in FIG. Figure 5 As shown, it is a rectangular column structure, the interior is hollow and can be filled with fillers, the upper and lower surfaces are provided with water permeable holes 154, and the top end surface is provided with a feeding hole. The first disc 150 and the second disc 250 are preferably made of stainless steel, the first disc 150 can be welded to the first rotating shaft 140, and the second disc 250 is welded to the hexagonal frame 260 by welding rods.

[0032] In the present invention, different fillers can be filled in the first rotating cage 100 and the second rotating cage 200, and they can rotate at different speeds. By setting the fillers and the speed, the present invention can have different sewage treatment capabilities. The fillers and the speed can be set specifically according to the needs. It should also be noted that the second disc 250 will stir the sewage in the contact oxidation tank during the rotation process to accelerate the contact between the biological rotating cage and the sewage.

[0033] The biological cage is immersed in the sewage in the contact oxidation tank at a certain immersion ratio. The pollutants in the sewage are adsorbed by the attached biofilm on the biological cage. Driven by the motor, this part of the biological cage leaves the water body and enters the air. A layer of retained water is formed on the surface of the biofilm. Oxygen enters it and is used by microorganisms to oxidize and decompose the pollutants. Each rotation of the biological cage completes a process of adsorption, oxygen absorption and degradation, which is repeated over and over again in a continuous cycle, and the pollutants in the water body are continuously degraded.

[0034] In addition, the surface and internal fillers of the part of the biological cage that is in the air are fully in contact with the air, and the liquid film on the surface of the biofilm reaches an oxygen supersaturated state. This part of the biological cage then enters the water body, and the liquid film dissolves into the water body, increasing the dissolved oxygen content in the pool, thereby achieving the effect of oxygenating the water body.

[0035] It should also be noted that although Figure 1 and Figure 2 The size of the first disc 150 is relatively small, but it is easy to imagine that increasing the size of the first disc 150 will reduce the size of the second disc 250 at the same time. The size is not limited by the present invention. The sewage biological treatment device of the present invention is to use the first rotating cage and the second rotating cage to rotate independently through the coaxial arrangement, and use the motor to affect the sewage treatment capacity. At the same time, different fillers can be set in the first rotating cage and the second rotating cage, such as suspended fillers, ordinary polyurethane fillers, hydrophilic polyurethane fillers, biological ceramsite, fiber balls, etc., and the biofilm area is increased by increasing the fillers, thereby improving the sewage treatment capacity of the device.

[0036] A sewage biological treatment device with two rotating shafts, such as Figure 6 As shown, it includes a reaction tank 300, and the reaction tank 300 contains a first rotating cage 100 and a second rotating cage 200 which are coaxially arranged; the reaction tank 300 is provided with a water inlet and a water outlet.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sewage biological treatment device with two rotating shafts, comprising a first rotating cage with a first disc and a first rotating shaft, characterized in that: It also includes a second rotating cage with a second rotating shaft and a second disc; the second rotating shaft is mounted on the outside of the first rotating shaft and is coaxially spaced from the first rotating shaft; the first disc is fixedly connected to the first rotating shaft, and the second disc is fixedly connected to the second rotating shaft; the first rotating shaft and the second rotating shaft are respectively connected to motors and can rotate independently of each other.

2. The dual-rotating-shaft sewage biological treatment device according to claim 1, characterized in that: The second rotating cage includes a second motor, a second rotating shaft, a second disk and a hexagonal frame; the second rotating shaft is symmetrically distributed on the left and right sides, and the second motor is connected to the second rotating shaft through a transmission device on the left and right sides; the hexagonal frame is fixedly connected to the second rotating shaft on the left and right sides, and is fixedly connected to the second disk on the inner side of the upper and lower ends.

3. The sewage biological treatment device with dual rotating shafts according to claim 2, characterized in that: The second disc is a hollow rectangular column structure, with water permeable holes on the upper and lower surfaces, and a feeding hole and a cover plate corresponding to the feeding hole on the top end surface.

4. The sewage biological treatment device with dual rotating shafts according to claim 2, characterized in that: The transmission device is a second gear and a second rack meshing with the second gear; the second motor is provided with an output shaft, and the second gear is fixedly connected to the output shaft and one end of the second rotating shaft respectively.

5. The sewage biological treatment device with dual rotating shafts according to claim 2, characterized in that: The transmission device is a second gear and a second rack meshing with the second gear; the second motor is provided with an output shaft, and the second gear is fixedly connected to the output shaft and one end of the second rotating shaft respectively.

6. The sewage biological treatment device with dual rotating shafts according to claim 5, characterized in that: The first disc is a hollow cylindrical structure, with a feeding hole and a cover plate on the side surface; a through hole begins to be formed in the middle of the circular surface, and a plurality of circular water-permeable holes begin to be formed around the through hole.

7. The dual-rotating-shaft sewage biological treatment device according to claim 1, characterized in that: The first disc and the second disc are both made of stainless steel.

8. The dual-rotating-shaft sewage biological treatment device according to claim 1, characterized in that: Also included is a reaction tank with a water inlet and a water outlet.

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