Sand-water separation device for sewage treatment

Abstract

The utility model discloses a sand-water separation device for sewage treatment, which belongs to the technical field of sewage treatment and comprises a protective plate, a U-shaped groove is fixedly connected to the bottom wall of the protective plate, and the top wall of the U-shaped groove is completely attached to the bottom wall of the protective plate to form a semi-sealed cavity. A driving assembly used for providing power input for the separation device is fixedly mounted on the right side of the outer wall of the protection plate, a separation assembly used for separating a sand-water mixture is mounted on the left side of the outer wall of the protection plate, a buffering assembly used for achieving the buffering effect when the sand-water mixture is fed is mounted in the protection plate, and the driving assembly comprises a mounting base; according to the sand-water separation device, stable sand-water separation operation can be achieved through the driving assembly and the separation assembly, meanwhile, sewage stock solution entering the sand-water separation device can be buffered through the design of the buffering assembly, deposited sand is prevented from being flushed up again, and the conveying effect on the sand is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a sand-water separation device for wastewater treatment. Background Technology

[0002] Sand-water separation is a key step in wastewater pretreatment, mainly used to remove dense inorganic particles such as sand and gravel from wastewater to prevent them from causing wear and tear on subsequent equipment or clogging of pipes.

[0003] Chinese Patent Announcement No. CN216170159U discloses a sedimentation device for domestic sewage treatment. This device "includes a tank, with mounting blocks installed on the lower part of the inner walls on both sides of the tank. A bearing A is located at the center of the upper surface of the tank, and a mounting frame is installed on the top of the tank. A bearing B is located at the center of the upper surface of the mounting frame. Its structure is reasonable. This utility model, by incorporating a sedimentation mechanism, separates sewage from sediment, reducing the presence of sediment in the sewage and preventing sediment from clogging the pipes. A driving mechanism is also included to clean the inner wall of the tank, preventing sediment adsorption. This achieves sedimentation treatment during domestic sewage treatment, while also being simple in structure, easy to operate, eliminating many cumbersome steps, and effectively improving work efficiency and sewage treatment effect."

[0004] Although the above-mentioned device can separate sewage and silt in actual use, the separated silt still remains inside the tank, and the subsequent discharge of silt cannot be guaranteed. At the same time, traditional sand-water separators rely on continuous feeding, which can cause previously deposited sand and gravel to be flushed up again, thus affecting the conveying effect of sand particles and making the device have certain limitations in use. Utility Model Content

[0005] The purpose of this invention is to provide a sand-water separation device for sewage treatment, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sand-water separation device for sewage treatment, comprising a protective plate, wherein a U-shaped groove is fixedly connected to the bottom wall of the protective plate, the top wall of the U-shaped groove is completely fitted with the bottom wall of the protective plate to form a semi-sealed cavity, a drive component for providing power input to the separation device is fixedly installed on the right side of the outer wall of the protective plate, a separation component for separating the sand-water mixture is installed on the left side of the outer wall of the protective plate, and a buffer component for buffering the sand-water mixture during feeding is installed inside the protective plate.

[0007] Preferably, the drive assembly includes a mounting base, which is fixedly connected to the right end of the outer wall of the protective plate. A motor is fixedly connected to the top wall of the mounting base, and a speed reducer is fixedly connected to the output end of the motor. A shaftless spiral blade is fixedly connected to the output end of the speed reducer, and the length of the shaftless spiral blade is slightly smaller than the length of the protective plate.

[0008] Preferably, the separation component includes a water tank for containing a sand-water mixture, the water tank being fixedly connected to the left side of the top wall of the protective plate, and support frames being fixedly connected to both sides of the outer wall of the water tank and both sides of the outer wall of the protective plate, with the bottoms of the multiple support frames on the same horizontal plane, and an overflow port being provided at the front end of the outer wall of the water tank.

[0009] Preferably, the buffer assembly includes a V-shaped guide plate, which is fixedly installed on the left end of the inner wall of the protective plate through mounting holes on both sides of the outer wall. Both sides of the outer wall of the guide plate are provided with through slots arranged in a rectangular array. A spring is fixedly connected to the top wall of the guide plate, and a receiving plate is fixedly connected to the top of the spring. Multiple drainage slots are arranged in a ring array around the center of the receiving plate on the top wall of the receiving plate.

[0010] Preferably, the inner wall of the U-shaped groove is fixedly connected to an inner plate, the inner plate is adapted to the inner wall of the U-shaped groove, and the shaftless spiral blade is in contact with the inner wall of the inner plate.

[0011] Preferably, both the U-shaped groove and the inner panel have sand outlets at the right end of their bottom walls, and a sand outlet pipe is fixedly connected to the right side of the bottom wall of the U-shaped groove, with the sand outlet pipe and the sand outlet communicating with each other.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the sand-water separation device for sewage treatment achieves stable sand-water separation operation through the drive component and the separation component. At the same time, the design of the buffer component can buffer the incoming sewage raw liquid, avoid flushing up the already deposited sand and gravel again, and ensure the conveying effect of the sand and gravel. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the drive component structure proposed in this utility model;

[0015] Figure 3 This is a partial cross-sectional view of the structure proposed in this utility model;

[0016] Figure 4 This is a schematic diagram of the disassembled structure of the buffer component proposed in this utility model;

[0017] Figure 5This is a schematic diagram of the partially disassembled structure proposed in this utility model.

[0018] In the diagram: 1. Protective plate; 2. U-shaped channel; 3. Mounting base; 31. Motor; 32. Reducer; 33. Shaftless spiral vane; 4. Water tank; 41. Support frame; 42. Overflow port; 5. Guide plate; 51. Mounting hole; 52. Through groove; 53. Spring; 54. Receiving plate; 55. Drainage channel; 6. Embedded plate; 7. Sand outlet; 8. Sand outlet pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-4 This utility model provides a technical solution: a sand-water separation device for sewage treatment, including a protective plate 1, a U-shaped groove 2 fixedly connected to the bottom wall of the protective plate 1, the top wall of the U-shaped groove 2 completely fitting with the bottom wall of the protective plate 1 to form a semi-sealed cavity, a drive component for providing power input to the separation device fixedly installed on the right side of the outer wall of the protective plate 1, a separation component for separating the sand-water mixture installed on the left side of the outer wall of the protective plate 1, and a buffer component for buffering the sand-water mixture during feeding installed inside the protective plate 1; the drive component includes a mounting base 3, which is fixedly connected to the right end of the outer wall of the protective plate 1, a motor 31 fixedly connected to the top wall of the mounting base 3, a reducer 32 fixedly connected to the output end of the motor 31, and a shaftless spiral blade 33 fixedly connected to the output end of the reducer 32, the length of the shaftless spiral blade 33 being slightly smaller than the length of the protective plate 1.

[0021] Through the above technical solution, the equipment consists of a drive component, a separation component, and a buffer component. The drive component is fixedly installed by the mounting base 3 and typically uses a motor 31 with an IP65 protection rating, a three-phase 380V voltage rating, a 50Hz frequency, and F-class insulation. Its rated power is more than 10% higher than the upper limit of the actual power consumption. At the same time, the high speed of the motor 31 is reduced to a speed suitable for the operation of the screw shaft through a shaft-mounted reducer 32, while increasing the torque to ensure the performance. The U-shaped trough 2 is designed with a high feed point and a low discharge point to ensure that the sewage will not move upward with the separation component due to gravity, thereby realizing the separation between water and sand.

[0022] Please see Figure 1 and Figure 3The separation component includes a water tank 4 for containing a sand-water mixture. The water tank 4 is fixedly connected to the left side of the top wall of the protective plate 1. Support frames 41 are fixedly connected to both sides of the outer wall of the water tank 4 and both sides of the outer wall of the protective plate 1. The bottoms of the multiple support frames 41 are on the same horizontal plane. An overflow port 42 is opened at the front end of the outer wall of the water tank 4. The buffer component includes a V-shaped guide plate 5. The guide plate 5 is fixedly installed on the left end of the inner wall of the protective plate 1 through the mounting holes 51 on both sides of the outer wall. The guide plate 5 has through slots 52 arranged in a rectangular array on both sides of the outer wall. A spring 53 is fixedly connected to the top wall of the guide plate 5. A receiving plate 54 is fixedly connected to the top of the spring 53. Multiple diversion slots 55 are arranged in a ring array around the center of the receiving plate 54 on the top wall of the receiving plate 54.

[0023] Through the above technical solutions, the water tank 4 is designed to be wider on the left and narrower on the right, which can increase the internal volume and provide a place for the water-sand mixture to be stored. The combination of the water tank 4 and the top wall of the protective plate 1, together with the design of the U-shaped channel 2, can ensure the stable transport of water and sand. The guide plate 5 is designed in a V shape, which can stably send the buffered sewage into the equipment. At the same time, the design of the mounting hole 51 can ensure the quick installation and removal of the guide plate 5. The buffer component needs to be installed at a height higher than the overflow port 42. Meanwhile, the sealing baffle is fixedly connected to the top wall of the protective plate 1 and the water tank 4, which can ensure the stable entry of the original liquid and prevent the sewage from colliding with the receiving plate 54 and splashing into the external environment.

[0024] Please see Figure 1 and Figure 4 An inner plate 6 is fixedly connected to the inner wall of the U-shaped channel 2. The inner plate 6 is adapted to the inner wall of the U-shaped channel 2. The shaftless spiral blade 33 is attached to the inner wall of the inner plate 6. A sand outlet 7 is opened at the right end of the bottom wall of both the U-shaped channel 2 and the inner plate 6. A sand outlet pipe 8 is fixedly connected to the right side of the bottom wall of the U-shaped channel 2. The sand outlet pipe 8 and the sand outlet 7 are connected.

[0025] Through the above technical solution, the inner wall of the U-shaped channel 2 is equipped with a quick-removable inner plate 6. The inner plate 6 can protect the U-shaped channel 2 and allow for partial replacement of the equipment, thus extending the service life of the device. The overflow port 42 and the sand discharge pipe 8 are designed to discharge sewage and sand respectively, ensuring the continuous separation effect of the device.

[0026] Working Principle: First, the sand-water mixture is discharged from the centralized sewage drain pipe into the water tank 4. The water tank 4 is wider on the left and narrower on the right. The sand and gravel in the mixture settle downwards due to gravity. The motor 31 is started to control the reducer 32 and the shaftless spiral blade 33 to rotate. The design of the protective plate 1 and the U-shaped channel 2 provides a semi-sealed space for the rotation of the shaftless spiral blade 33. The inner plate 6 is installed on the inner wall of the U-shaped channel 2 and fits against the outer wall of the shaftless spiral blade 33, ensuring the tightness of the conveying space when transporting sand and gravel. At the same time, the inner plate 6 can be quickly installed and removed from the inner wall of the U-shaped channel 2 to ensure the efficiency of sand transport. During the sand transport process, the sand particles will scrape the outer surface of the separation device. The design of the inner plate 6 allows for partial replacement of the device, improving its durability. During the rotation of the shaftless spiral blade 33, the sand particles gradually move upwards along the outer surface of the spiral blade to the sand outlet 7. The design of the lower sand outlet pipe 8 ensures the stable fall of the sand particles, facilitating subsequent centralized transportation. The overflow port 42 has a connecting pipe on its outer surface. The separated sewage flows back through the overflow port 42 to achieve repeated separation of sewage and improve separation efficiency and effect. The support frame 41 and the mounting base 3 provide support for the separation device body and the motor 31, respectively, to ensure the stability of the overall installation of the equipment. As the sewage raw liquid continuously enters, the sand particles that have been deposited on the bottom wall of the U-shaped trough 2 are impacted by the sewage and agitated again in the sewage. This makes the sand particles easy to flow out of the overflow port 42 with the flow of sewage. In this application, the sewage raw liquid first hits the surface of the receiving plate 54, and then the spring 53 provides initial buffering of the impact force. The sewage flows along the diversion channel 55 to the V-shaped guide plate 5, preventing the sewage raw liquid from directly rushing into the U-shaped trough 2 and ensuring the effect of water and sand separation. The guide plate 5 is an inverted V-shaped design, which can ensure that the sewage flows directly into the device along the diversion channel 55 or enters the U-shaped trough 2 through the through channel 52, ensuring the stable transport of sand particles.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sand-water separation device for sewage treatment, comprising a guard plate (1), characterized in that: The bottom wall of the protective plate (1) is fixedly connected to a U-shaped groove (2). The top wall of the U-shaped groove (2) is completely fitted with the bottom wall of the protective plate (1) to form a semi-sealed cavity. A drive component for providing power input to the separation device is fixedly installed on the right side of the outer wall of the protective plate (1). A separation component for separating the sand-water mixture is installed on the left side of the outer wall of the protective plate (1). A buffer component for buffering the sand-water mixture is installed inside the protective plate (1).

2. A sand-water separation device for sewage treatment according to claim 1, characterised in that: The drive assembly includes a mounting base (3), which is fixedly connected to the right end of the outer wall of the protective plate (1). A motor (31) is fixedly connected to the top wall of the mounting base (3). A reducer (32) is fixedly connected to the output end of the motor (31). A shaftless spiral blade (33) is fixedly connected to the output end of the reducer (32). The length of the shaftless spiral blade (33) is slightly less than the length of the protective plate (1).

3. A sand-water separation device for sewage treatment as claimed in claim 1, wherein: The separation assembly includes a water tank (4) for containing a sand-water mixture. The water tank (4) is fixedly connected to the left side of the top wall of the protective plate (1). Support frames (41) are fixedly connected to both sides of the outer wall of the water tank (4) and both sides of the outer wall of the protective plate (1). The bottoms of the multiple support frames (41) are on the same horizontal plane. An overflow port (42) is provided at the front end of the outer wall of the water tank (4).

4. A sand-water separation device for sewage treatment as claimed in claim 1, wherein: The buffer assembly includes a V-shaped guide plate (5), which is fixedly installed on the left side of the inner wall of the protective plate (1) through mounting holes (51) on both sides of the outer wall. The guide plate (5) has through slots (52) arranged in a rectangular array on both sides of the outer wall. A spring (53) is fixedly connected to the top wall of the guide plate (5), and a receiving plate (54) is fixedly connected to the top of the spring (53). The top wall of the receiving plate (54) has multiple drainage slots (55) arranged in a ring array with the center of the receiving plate (54) as the axis.

5. A sand-water separation device for sewage treatment as claimed in claim 2, wherein: The inner wall of the U-shaped groove (2) is fixedly connected to an inner plate (6), the inner plate (6) is adapted to the inner wall of the U-shaped groove (2), and the shaftless spiral blade (33) is attached to the inner wall of the inner plate (6).

6. A sand-water separation device for sewage treatment according to claim 5, characterised in that: The bottom wall of the U-shaped groove (2) and the inner plate (6) are both provided with sand outlets (7). A sand outlet pipe (8) is fixedly connected to the right side of the bottom wall of the U-shaped groove (2). The sand outlet pipe (8) and the sand outlet (7) are connected.

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