Efficient rotational flow sand setting device for sewage treatment

Abstract

The utility model relates to the technical field of water treatment, in particular to an efficient rotational flow sand setting device for sewage treatment, which comprises a sand setting tank, a sand discharging tank and a conical pipe connected between the sand setting tank and the sand discharging tank, the upper end of the sand setting tank is fixedly connected with a tank cover, and the middle of the upper end of the tank cover is fixedly provided with a motor through a bearing assembly. The output shaft end of the motor is fixedly connected with a rotating shaft, the rotating shaft penetrates through the tank cover and extends into the sand setting tank, the outer wall, located in the sand setting tank, of the rotating shaft is fixedly connected with a plurality of stirring blades around the center of the rotating shaft in an annular array mode, the position, close to the lower edge, of the outer wall of the rotating shaft is sleeved with a lantern ring, and an adjusting mechanism is arranged between the lantern ring and the rotating shaft. The outer ring face of the lantern ring is symmetrically and fixedly connected with connecting columns, and the ends, away from each other, of the two connecting columns are fixedly connected with connecting plates. Sand adhered to the inner conical surface of the conical pipe on the efficient rotational flow sand setting device is convenient to clean, so that the use effect of the rotational flow sand setting device is ensured, and the sewage treatment efficiency is indirectly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to an efficient cyclone grit chamber for sewage treatment. Background Technique

[0002] An efficient cyclone grit chamber is a device that uses the principle of rotational fluid mechanics to improve the grit removal efficiency. It creates a strong rotational flow to effectively separate the sediments (such as sand and fine particles) in the water. Its main body mainly consists of a grit chamber (with a relatively thick tank body), a sand discharge tank (with a relatively thin tank body), and a conical pipe connecting the grit chamber and the sand discharge tank.

[0003] When the efficient cyclone grit chamber is in use, sewage enters the grit chamber through the water inlet pipe on the grit chamber. Subsequently, the stirring blades in the grit chamber will rotate and drive the sewage to generate a swirl, thereby quickly throwing the sand to the inner wall of the grit chamber. Under the action of its own gravity, the sand grains will gather into the sand discharge tank along the inner wall of the grit chamber and the inner conical surface of the conical pipe. The swirling sewage can be discharged through the water outlet pipe on the grit chamber for the next treatment operation. When the sand grains accumulated in the sand discharge tank reach a certain level, the sand grains are discharged through the screw conveyor installed on the sand discharge tank.

[0004] However, the sand in the sewage has sewage attached to its surface and has a certain viscosity. Due to the limited perpendicularity of the conical surface of the conical pipe, some of the sand thrown onto the inner wall of the grit chamber will inevitably adhere to the conical pipe and is not easy to clean, which will affect the use effect of the cyclone grit chamber. Regular manual cleaning is very troublesome and indirectly affects the sewage treatment efficiency. For this reason, we propose an efficient cyclone grit chamber for sewage treatment. Content of the Utility Model

[0005] The purpose of the utility model is to provide an efficient cyclone grit chamber for sewage treatment to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An efficient cyclone grit chamber for sewage treatment, including a grit chamber, a sand discharge tank, and a conical pipe connecting the grit chamber and the sand discharge tank. The upper end of the grit chamber is fixedly connected with a tank cover. The middle part of the upper end of the tank cover is fixedly installed with a motor through a bearing component. The output shaft end of the motor is fixedly connected with a rotating shaft. The rotating shaft passes through the tank cover and extends into the grit chamber. The outer wall of the rotating shaft inside the grit chamber is fixedly connected with a plurality of stirring blades in a circumferential array around its center. A collar is slidably sleeved on the outer wall of the rotating shaft near the lower edge. An adjusting mechanism is arranged between the collar and the rotating shaft. The outer ring surface of the collar is symmetrically fixedly connected with connecting columns. One end of each of the two connecting columns away from each other is fixedly connected with a connecting plate. The outer walls of the two connecting plates near the lower edge are fixedly connected with scraping plates. The bottom ends of the two scraping plates are close to the inner conical surface of the conical pipe.

[0007] Preferably, the bearing assembly includes four support rods, all of the four support rods are fixedly connected to the upper end of the tank cover, and a carrier plate is fixedly connected to the upper ends of the four support rods together, and the motor is fixedly installed on the upper end of the carrier plate.

[0008] Preferably, the adjusting mechanism includes a connecting rod, the connecting rod is fixedly connected to the upper end of the collar, and the upper end of the connecting rod passes through the upper end of the tank cover, and a connecting block is fixedly connected to the upper end of the connecting rod, an outer wall of the connecting block is fixedly connected with a circular ring, the circular ring is slidably sleeved on an outer wall of the rotating shaft, and a locking mechanism is arranged between the circular ring and the rotating shaft.

[0009] Preferably, the locking mechanism includes an internally threaded pipe and two screw holes, the internally threaded pipe communicates with an outer ring surface of the circular ring, an inner wall of the internally threaded pipe is threadedly connected with a knob screw, the two screw holes are sequentially opened on the outer wall of the rotating shaft corresponding to the knob screw from top to bottom, and the knob screw is in threaded fit with the screw hole located above.

[0010] Preferably, a plurality of support columns are fixedly connected to an outer conical surface of the conical pipe in a circumferential array around its center.

[0011] Preferably, the circular ring and the connecting block are of an integrally formed structure.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: through the mutual cooperation of the grit chamber, the sand discharge tank, the conical pipe, the tank cover, the motor, the rotating shaft, the collar, the adjusting mechanism, the connecting column, the connecting plate and the scraper, the sand adhered to the inner conical surface of the conical pipe on the high-efficiency cyclone grit chamber is convenient to clean, which is beneficial to ensuring the use effect of the cyclone grit chamber and indirectly improving the sewage treatment efficiency. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 is a partial cross-sectional view of the present utility model;

[0015] Figure 3 is Figure 2 a schematic enlarged view of the structure at A in

[0016] Figure 4 is a display diagram of the connecting rod, the collar, the connecting column, the connecting plate and the scraper of the present utility model.

[0017] In the attached drawings, the list of components represented by each reference numeral is as follows: 1. grit chamber; 2. sand discharge tank; 3. conical pipe; 4. tank cover; 5. support rod; 6. carrier plate; 7. motor; 8. support column; 9. rotating shaft; 10. connecting rod; 11. collar; 12. connecting column; 13. connecting plate; 14. scraper; 15. stirring blade; 16. circular ring; 17. connecting block; 18. internally threaded pipe; 19. knob screw; 20. threaded hole. Detailed implementation manner

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-4 , a highly efficient cyclone grit chamber for sewage treatment shown in the figure, comprising a grit chamber 1, a sand discharge tank 2, and a conical pipe 3 connected between the grit chamber 1 and the sand discharge tank 2. The upper end of the grit chamber 1 is fixedly connected with a tank cover 4. The middle of the upper end of the tank cover 4 is fixedly installed with a motor 7 through a bearing assembly. The output shaft end of the motor 7 is fixedly connected with a rotating shaft 9. The rotating shaft 9 passes through the tank cover 4 and extends into the grit chamber 1. A plurality of stirring blades 15 are fixedly connected in a circumferential array around the center of the outer wall of the rotating shaft 9 inside the grit chamber 1. A collar 11 is slidably sleeved on the outer wall of the rotating shaft 9 near the lower edge. An adjusting mechanism is provided between the collar 11 and the rotating shaft 9. The outer ring surface of the collar 11 is symmetrically and fixedly connected with connecting columns 12. The far ends of the two connecting columns 12 are both fixedly connected with connecting plates 13. The outer walls of the two connecting plates 13 near the lower edge are both fixedly connected with scrapers 14. The bottom ends of the two scrapers 14 are both close to the inner conical surface of the conical pipe 3.

[0020] Please refer to [[ID=**14]] Figure 1 And Figure 2 , in the figure, the bearing assembly includes four support rods 5. The four support rods 5 are all fixedly connected to the upper end of the tank cover 4. The upper ends of the four support rods 5 are jointly fixedly connected with a carrier plate 6. The motor 7 is fixedly installed on the upper end of the carrier plate 6.

[0021] Please refer to Figures 2-4 , in the figure, the adjusting mechanism includes a connecting rod 10. The connecting rod 10 is fixedly connected to the upper end of the collar 11. The upper end of the connecting rod 10 passes through the upper end of the tank cover 4. The upper end of the connecting rod 10 is fixedly connected with a connecting block 17. The outer wall of the connecting block 17 is fixedly connected with a circular ring 16. The circular ring 16 is slidably sleeved on the outer wall of the rotating shaft 9. A locking mechanism is provided between the circular ring 16 and the rotating shaft 9.

[0022] Please refer to Figure 3, in the illustration, the locking mechanism includes an internally threaded pipe 18 and two screw holes 20. The internally threaded pipe 18 is connected to the outer ring surface of the circular ring 16, and the inner wall of the internally threaded pipe 18 is threadedly connected with a knob screw 19. The two screw holes 20 are successively formed in the outer wall of the rotating shaft 9 corresponding to the knob screw 19 from top to bottom, and the knob screw 19 is in threaded cooperation with the upper screw hole 20.

[0023] Please refer to Figure 1 , in the illustration, multiple support columns 8 are fixedly connected in a circumferential array around the center of the outer conical surface of the conical pipe 3; specifically, the arrangement of the support columns 8 facilitates the stable placement of this grit chamber.

[0024] Please refer to Figure 3 , in the illustration, the circular ring 16 and the connecting block 17 are of an integrally formed structure; specifically, the stability between the circular ring 16 and the connecting block 17 is good.

[0025] Working principle: Sewage enters the grit chamber 1 through the water inlet pipe on the grit chamber 1. Subsequently, the motor 7 on the carrier plate 6 is connected to an external power source. The output shaft of the motor 7 will rotate and drive the rotating shaft 9 to rotate in the grit chamber 1. The rotating shaft 9 will drive multiple stirring blades 15 to rotate in the grit chamber 1. Under the action of the multiple stirring blades 15, the sewage in the grit chamber 1 will generate a swirling flow, thereby quickly throwing the sand to the inner wall of the grit chamber 1. Under the action of its own gravity, the sand grains will gather into the sand discharge tank 2 along the inner wall of the grit chamber 1 and the inner conical surface of the conical pipe 3. The swirling sewage can be discharged outward through the water outlet pipe on the grit chamber 1 for the next treatment operation. When the sand grains accumulated in the sand discharge tank 2 reach a certain level, the spiral conveyor installed on the sand discharge tank 2 is used to discharge the sand grains accumulated in the sand discharge tank 2 (this is a well-known prior art and will not be elaborated).

[0026] When it is necessary to remove the sand adhering to the inner conical surface of the conical tube 3, the knob screw 19 can be rotated outward. The knob screw 19 will rotate outward within the internal threaded tube 18 on the ring 16, and the knob screw 19 will also rotate outward within a screw hole 20 located above on the rotating shaft 9. Until the knob screw 19 completely turns away from the screw hole 20, move the ring 16 downward. The ring 16 will slide downward on the outer wall of the rotating shaft 9, and the ring 16 will drive the connecting block 17 to move downward. The connecting block 17 will drive the connecting rod 10 to move downward. The connecting rod 10 will drive the collar 11 to slide downward on the outer wall of the rotating shaft 9. The collar 11 will drive the two connecting columns 12 to move downward. The two connecting columns 12 will drive the connecting plates 13 on them to move downward. The two connecting plates 13 will drive the scraping plates 14 on them to move downward. Until the lower ends of the two scraping plates 14 are both in contact with the inner conical surface of the conical tube 3, rotate the knob screw 19 inward. The knob screw 19 will rotate inward within the inner wall of the internal threaded tube 18, and the knob screw 19 will insert into and be tightened in a screw hole 20 located below on the rotating shaft 9. Then the ring 16 can be refixed on the rotating shaft 9 after moving downward, and the two scraping plates 14 will both maintain the state of being in contact with the inner conical surface of the conical tube 3. Finally, connect the motor 7 to an external power source, then the rotating shaft 9 will drive the ring 16, the connecting block 17, the connecting rod 10, the collar 11, the two connecting columns 12 and the two connecting plates 13, etc. to rotate together. The two connecting plates 13 will drive the scraping plates 14 on them to rotate on the inner conical surface of the conical tube 3. Then the two scraping plates 14 can scrape the sand adhering to the inner conical surface of the conical tube 3 into the sand discharge tank 2. When the sand adhering to the inner conical surface of the conical tube 3 is cleaned up, fix the ring 16 to its original position, then the two scraping plates 14 will return to their original positions, and the two scraping plates 14 will leave the inner conical surface of the conical tube 3, avoiding the abrasion caused by the continuous friction between the two scraping plates 14 and the inner conical surface of the conical tube 3 during the sedimentation operation.

[0027] It should be noted that the sand adhering to the inner conical surface of the conical tube 3 on this high-efficiency cyclone sedimentation tank is convenient to clean, which is beneficial to ensuring the use effect of the cyclone sedimentation tank and indirectly improving the sewage treatment efficiency.

[0028] It should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An efficient cyclone grit chamber for sewage treatment, comprising a grit chamber (1), a sand discharge tank (2), and a conical pipe (3) connected between the grit chamber (1) and the sand discharge tank (2), characterized in that: The upper end of the grit chamber (1) is fixedly connected with a tank cover (4). The middle part of the upper end of the tank cover (4) is fixedly installed with a motor (7) through a bearing component. The output shaft end of the motor (7) is fixedly connected with a rotating shaft (9). The rotating shaft (9) passes through the tank cover (4) and extends into the grit chamber (1). Multiple stirring blades (15) are fixedly connected around the outer wall of the rotating shaft (9) inside the grit chamber (1) in a circumferential array around its center. A collar (11) is slidably sleeved on the outer wall of the rotating shaft (9) near the lower edge. An adjusting mechanism is arranged between the collar (11) and the rotating shaft (9). Symmetrically fixed to the outer ring surface of the collar (11) are connecting columns (12). One end of each of the two connecting columns (12) away from each other is fixedly connected with a connecting plate (13). Scrapers (14) are fixedly connected to the outer walls of the two connecting plates (13) near the lower edge. The bottom ends of the two scrapers (14) are close to the inner conical surface of the conical pipe (3).

2. The high-efficiency cyclone grit chamber for sewage treatment according to claim 1, wherein: The bearing component includes four support rods (5). The four support rods (5) are all fixedly connected to the upper end of the tank cover (4). The upper ends of the four support rods (5) are jointly fixedly connected with a carrier plate (6). The motor (7) is fixedly installed on the upper end of the carrier plate (6).

3. The high-efficiency cyclone grit chamber for sewage treatment according to claim 1, characterized in that: The adjusting mechanism includes a connecting rod (10). The connecting rod (10) is fixedly connected to the upper end of the collar (11). The upper end of the connecting rod (10) passes through the upper end of the tank cover (4). The upper end of the connecting rod (10) is fixedly connected with a connecting block (17). A circular ring (16) is fixedly connected to the outer wall of the connecting block (17). The circular ring (16) is slidably sleeved on the outer wall of the rotating shaft (9). A locking mechanism is arranged between the circular ring (16) and the rotating shaft (9).

4. The high-efficiency cyclone grit chamber for sewage treatment according to claim 3, wherein: The locking mechanism includes an internally threaded pipe (18) and two screw holes (20). The internally threaded pipe (18) communicates with the outer ring surface of the circular ring (16). A knob screw (19) is threadedly connected to the inner wall of the internally threaded pipe (18). The two screw holes (20) are successively opened in the outer wall of the rotating shaft (9) corresponding to the knob screw (19) from top to bottom. The knob screw (19) is in threaded cooperation with the upper screw hole (20).

5. An efficient cyclone grit chamber for sewage treatment according to claim 1, characterized in that: Multiple support columns (8) are fixedly connected around the outer conical surface of the conical pipe (3) in a circumferential array around its center.

6. The high-efficiency cyclone grit chamber for sewage treatment according to claim 3, characterized in that: The circular ring (16) and the connecting block (17) are of an integrally formed structure.

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