Sewage treatment device with spiral rising type double-layer membrane mechanism

Abstract

The utility model relates to a sewage treatment device with a spiral rising type double-layer membrane mechanism, which belongs to the technical field of sewage treatment devices and comprises a barrel, a speed reducing motor, a gear transmission mechanism, a water inlet and a pressure relief opening are arranged at the top of the barrel, a water outlet is arranged at the bottom of the barrel, and an air inlet and a drain outlet are arranged on the outer side of the barrel. A transmission shaft, a spiral rising mechanism and an aeration disc are arranged in the cylinder body, the speed reducing motor drives the transmission shaft to rotate through a gear transmission mechanism, the transmission shaft drives the spiral rising mechanism to rotate, the spiral rising mechanism is matched with the aeration disc for sewage treatment, and sewage is filtered and separated through a double-layer membrane mechanism in the spiral rising mechanism. Therefore, differentiated treatment of sewage and sludge is realized, and efficient treatment of sewage is realized by rapidly and stably forming a dynamic biological membrane.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment devices, and in particular relates to a sewage treatment device with a spiral ascending double-layer membrane mechanism. Background Art

[0002] Organic wastewater usually contains a variety of organic matter, which is difficult to treat through traditional biological treatment methods. The concentration fluctuations of various organic matter will have an impact on traditional treatment processes, and then produce secondary pollutants such as sludge and heavy metals. Using dynamic membrane bioreactors under the conditions of bacterial and algal symbiosis to treat the above-mentioned organic wastewater can not only effectively solve the current problems in sewage treatment, but also provide a new industrial chain model, and form biomass energy to increase the added value of sewage.

[0003] In the prior art, a device for treating sewage based on a bacterial-algal symbiotic system, with announcement number CN220132013U, is disclosed. The device drives a transmission shaft with a stirring paddle to rotate through a gear transmission mechanism, thereby fully stirring the sewage in the device. However, the stirring paddle itself does not have a filtering effect, and has a small contact area with the sewage in the device, resulting in low working efficiency. Utility Model Content

[0004] The technical problem solved by the utility model is to overcome the defects in the prior art and provide a sewage treatment device with a spiral ascending double-layer membrane mechanism.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] The sewage treatment device with a spiral rising double-layer membrane mechanism described in the utility model includes a cylinder, and a reduction motor and a gear transmission mechanism connected to each other are provided on the top of the cylinder. The gear transmission mechanism includes a first-level gear and a second-level gear that are meshed with each other, and the rotating end of the reduction motor is coaxially connected to the first-level gear; the interior of the cylinder is provided with a transmission shaft and a spiral rising mechanism arranged on the outside of the transmission shaft, the transmission shaft is coaxially connected to the second-level gear, the spiral rising mechanism includes a double-layer membrane mechanism and a spiral pipe, and the double-layer membrane mechanism is arranged between the transmission shaft and the spiral pipe.

[0007] The top of the cylinder is also provided with a water inlet and a pressure relief port, and the bottom is provided with a water outlet; the outside of the cylinder is provided with an air inlet and a sewage outlet.

[0008] An aeration plate is provided on the inner side of the bottom of the cylinder, and the aeration plate is connected to the air inlet.

[0009] The aeration plate includes a plurality of circular aeration tubes, each of which is provided with a plurality of aeration holes. The aeration tubes are connected by air dividing valves, and the air dividing valves are connected to the air inlet.

[0010] A clamping groove is provided in the middle of the spiral pipe, and the double-layer membrane mechanism is clamped in the clamping groove.

[0011] A communication port I and a communication port II are provided on the outer side of the transmission shaft, and two ends of the spiral pipe are connected to the communication port I and the communication port II respectively.

[0012] The double-layer membrane structure comprises an upper membrane and a lower membrane, and a cavity is provided between the upper membrane and the lower membrane.

[0013] The interior of the transmission shaft is arranged to be hollow, and the bottom of the transmission shaft is connected to the water outlet.

[0014] The utility model has the following beneficial effects:

[0015] 1. The setting of the reduction motor and gear transmission mechanism achieves the effect of deceleration and torque increase, which increases torque while reducing the speed, outputs power evenly and smoothly, reduces fluctuations and impacts in power transmission, and can effectively ensure that the spiral rising mechanism can be driven to work and rotate normally under various conditions.

[0016] 2. The spiral rising mechanism can effectively filter the bacteria and algae mixture, reduce the water flow resistance in the cylinder, and increase the contact area with the sewage reaction. At the same time, it can also prevent the sludge inside the cylinder from clogging and ensure a stable sewage treatment working flux.

[0017] 3. The hollow transmission shaft, double-layer membrane structure and spiral pipe can effectively classify sewage and sludge, which is conducive to the secondary utilization of the two and facilitates the subsequent separation and treatment of sewage and sludge.

[0018] 4. The aeration plate can provide sufficient oxygen for bacteria and algae, increase the dissolved oxygen content inside the cylinder and the gas exchange efficiency inside and outside the cylinder, and create a better living environment for bacteria and algae.

[0019] 5. The combination of the spiral rising mechanism and the aeration disc can quickly and stably form a self-generated dynamic membrane, slow down the membrane pollution effect, reduce the shedding of attached biofilm, and is conducive to the formation of a stable dynamic membrane structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front cross-sectional view of the utility model;

[0021] Figure 2 It is a side sectional view of the utility model;

[0022] Figure 3 This is a top view of the utility model;

[0023] Figure 4 Schematic diagram of the aeration plate;

[0024] Figure 5 It is a schematic diagram of the spiral rising mechanism;

[0025] Figure 6It is a cross-sectional view of the spiral rising mechanism;

[0026] Figure 7 This is an enlarged view of section A in the cross-sectional view of the spiral rising mechanism;

[0027] Figure 8 for Figure 7 Enlarged view of part B of the middle double-layer membrane mechanism.

[0028] Among them: 1. Cylinder; 2. Reducer motor; 3. First-stage gear; 4. Second-stage gear; 5. Drive shaft; 6. Double-layer membrane mechanism; 7. Spiral pipe; 8. Water inlet; 9. Pressure relief port; 10. Water outlet; 11. Air inlet; 12. Sewage outlet; 13. Aeration plate; 14. Aeration pipe; 15. Aeration hole; 16. Air distributor valve; 17. Slot; 18. Connecting port I; 19. Connecting port II; 20. Upper membrane; 21. Lower membrane; 22. Cavity. DETAILED DESCRIPTION

[0029] like Figures 1 to 8 As shown, the sewage treatment device with a spiral ascending double-layer membrane mechanism described in the present invention includes a cylinder 1, and a reduction motor 2 and a gear transmission mechanism are provided on the top of the cylinder 1. The gear transmission mechanism includes a meshing first-stage gear 3 and a second-stage gear 4, and the rotating end of the reduction motor 2 is coaxially connected to the first-stage gear 3; the interior of the cylinder 1 is provided with a transmission shaft 5 and a spiral ascending mechanism provided on the outside of the transmission shaft 5, and the transmission shaft 5 is coaxially connected to the second-stage gear 4. The spiral ascending mechanism includes a double-layer membrane mechanism 6 and a spiral pipe 7, and the double-layer membrane mechanism 6 is provided between the transmission shaft 5 and the spiral pipe 7.

[0030] The top of the cylinder 1 is provided with a water inlet 8 and a pressure relief port 9, and the bottom is provided with a water outlet 10; the outside of the cylinder 1 is provided with an air inlet 11 and a sewage outlet 12.

[0031] An aeration plate 13 is provided on the inner side of the bottom of the cylinder 1 , and the aeration plate 13 is connected to the air inlet 11 .

[0032] The aeration plate 13 includes a plurality of circular aeration tubes 14 , each of which is provided with a plurality of aeration holes 15 . The aeration tubes 14 are connected to each other via an air separation valve 16 , and the air separation valve 16 is connected to the air inlet 11 .

[0033] A clamping groove 17 is provided in the middle of the spiral pipe 7 , and the double-layer membrane mechanism 6 is clamped in the clamping groove 17 .

[0034] A communication port I18 and a communication port II 19 are provided on the outer side of the transmission shaft 5 , and both ends of the spiral pipe are connected to the communication port I18 and the communication port II 19 respectively.

[0035] The double-layer membrane structure 6 includes an upper membrane 20 and a lower membrane 21 , with a cavity 22 provided between the upper membrane 20 and the lower membrane 21 .

[0036] The interior of the transmission shaft 5 is hollow, and the bottom of the transmission shaft 5 is connected to the water outlet 10 .

[0037] Specifically, in actual sewage treatment work, sewage is first added from the water inlet 8, and the reduction motor 2 is started. The reduction motor 2 drives the first-stage gear 3 to rotate, and the first-stage gear 3 is engaged with the second-stage gear 4. The first-stage gear 3 drives the second-stage gear 4 to rotate. The second-stage gear 4 is coaxially connected to the transmission shaft 5. The second-stage gear 4 drives the transmission shaft 5 to rotate. The spiral rising mechanism is arranged on the outside of the transmission shaft 5 and rotates with the transmission shaft.

[0038] Specifically, the aeration plate 13 is connected to an external air pump through the air inlet 11 for micro-bubble aeration. The gas provided by the air pump enters the air separation valve 16 through the air inlet 11 and is then transported to each aeration pipe 14 through the air separation valve 16. The aeration pipe 14 performs micro-bubble aeration through the aeration holes 15.

[0039] Specifically, the double-layer membrane mechanism 6 uses a stainless steel mesh with a pore size of 500 mesh as the membrane substrate. During the rotation and stirring process, the double-layer membrane mechanism 6 can filter the bacteria and algae mixed liquid on the one hand, and on the other hand, it can form a self-generated dynamic membrane including an upper membrane 20 and a lower membrane 21 by intercepting the bacteria and algae mixed liquid.

[0040] Specifically, after being filtered through the self-generated dynamic membrane, the sewage will enter the cavity 22 between the upper membrane 20 and the lower membrane 21, and flow into the interior of the spiral pipe 7 through the cavity 22. The spiral pipe 7 is connected to the hollow part in the middle of the transmission shaft 5 through the connecting port I18 and the connecting port II 19. The head difference is used to provide hydraulic power so that the filtered sewage is discharged from the water outlet 10 at the bottom of the cylinder 1 through the hollow part in the middle of the transmission shaft 5.

[0041] Specifically, the pressure difference is balanced by the pressure relief port 9 at the top of the cylinder 1. After the water discharge step is completed, the interior of the cylinder 1 will enter a sedimentation stage, and the sludge will settle at the bottom of the cylinder 1, and will be discharged from the sewage outlet 12 after being flushed by the external water flow.

Claims

1. A sewage treatment device with a spiral ascending double-layer membrane mechanism, comprising a cylinder (1), characterized in that: The top of the cylinder (1) is provided with a reduction motor (2) and a gear transmission mechanism connected to each other, the gear transmission mechanism includes a first-stage gear (3) and a second-stage gear (4) that are meshed with each other, and the rotating end of the reduction motor (2) is coaxially connected to the first-stage gear (3); the interior of the cylinder (1) is provided with a transmission shaft (5) and a spiral ascending mechanism arranged on the outside of the transmission shaft (5), the transmission shaft (5) is coaxially connected to the second-stage gear (4), the spiral ascending mechanism includes a double-layer membrane mechanism (6) and a spiral pipe (7), and the double-layer membrane mechanism (6) is arranged between the transmission shaft (5) and the spiral pipe (7).

2. The sewage treatment device with a spiral ascending double-layer membrane mechanism according to claim 1, characterized in that: The top of the cylinder (1) is also provided with a water inlet (8) and a pressure relief port (9), and the bottom is provided with a water outlet (10); the outside of the cylinder (1) is provided with an air inlet (11) and a sewage outlet (12).

3. The sewage treatment device with a spiral ascending double-layer membrane mechanism according to claim 2, characterized in that: An aeration plate (13) is provided on the inner side of the bottom of the cylinder (1), and the aeration plate (13) is connected to the air inlet (11).

4. The sewage treatment device with a spiral ascending double-layer membrane mechanism according to claim 3 is characterized in that: The aeration plate (13) comprises a plurality of circular aeration tubes (14), the aeration tubes (14) are provided with a plurality of aeration holes (15), the aeration tubes (14) are connected to each other via an air separation valve (16), and the air separation valve (16) is connected to the air inlet (11).

5. The sewage treatment device with a spiral ascending double-layer membrane mechanism according to claim 1, characterized in that: A clamping groove (17) is provided in the middle of the spiral pipe (7), and the double-layer membrane mechanism (6) is clamped in the clamping groove (17).

6. The sewage treatment device with a spiral ascending double-layer membrane mechanism according to claim 1, characterized in that: A communication port I (18) and a communication port II (19) are provided on the outer side of the transmission shaft (5), and two ends of the spiral pipe (7) are connected to the communication port I (18) and the communication port II (19) respectively.

7. The sewage treatment device with a spiral ascending double-layer membrane mechanism according to claim 1, characterized in that: The double-layer membrane structure (6) comprises an upper membrane (20) and a lower membrane (21), and a cavity (22) is provided between the upper membrane (20) and the lower membrane (21).

8. The sewage treatment device with a spiral ascending double-layer membrane mechanism according to claim 1, characterized in that: The interior of the transmission shaft (5) is configured to be hollow, and the bottom of the transmission shaft (5) is connected to a water outlet (10).

Images