Canal head grit chamber
By using a mixing shaft and impeller to form a vortex effect, a combination design of sand and water separation holes of sand drain pipe and a cleaning ring scraper in the head sand sink, the problem of dirt layer adhesion in the cyclone sand sink tank is solved, and efficient sand sinking and cleaning is achieved, preventing channel blockage and saving water resources.
Patent Information
- Application Number
- CN202422269786.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-18
AI Technical Summary
When dealing with water sources containing colloidal substances and microorganisms, existing cyclones are prone to form biofilms or chemical deposition, resulting in adhesion of dirt layers, reducing sand deposition efficiency, and being difficult to remove effectively in cleaning, which easily leads to channel blockage.
A canal head sand sedimentation tank is designed, using a stirring shaft and impeller to form a vortex effect to promote impurity settlement, combined with the water filter hole of the sand discharge pipe to separate the sand water, and automatically clean the dirt on the inner wall with a combination of cleaning rings and scraper plates. It is equipped with a vibrator to accelerate the dirt sliding, collect drainage water through the water pump to reduce waste.
It significantly improves sand deposition efficiency, prevents dirt accumulation, reduces channel blockage, saves water resources, facilitates sand and gravel treatment, and ensures the smooth progress of the cleaning process.
Smart Images
Figure CN223158895U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of grit chambers, and specifically to a headrace grit chamber. Background Art
[0002] In the construction of farmland irrigation systems and modern agricultural facilities, the headrace grit chamber, as a key water treatment unit, plays a crucial role. Its main function is to remove large particulate impurities (such as sediment, stones, plant residues, etc.) in the irrigation water source to prevent these impurities from entering the irrigation channels and farmland, causing problems such as channel siltation, increased pump wear, reduced irrigation efficiency, and soil structure damage.
[0003] The working principle of a vortex grit chamber relies on the rotation of water flow to generate centrifugal force, causing heavier particulate matter to move radially and deposit in the sand hopper at the bottom of the chamber. The water source components in different regions are complex and variable. Some water sources contain relatively high levels of colloidal substances, microorganisms, and organic matter. These components are prone to forming biofilms or chemical deposits on the surface of the sand hopper under suitable conditions. Moreover, some fine particles and organic matter slowly deposit with the water flow, thus forming a layer of viscous dirt layer. This dirt has strong adhesiveness and is difficult to be washed away by natural water flow. The dirt layer hinders the normal settlement of impurities in the water flow, resulting in a decrease in grit removal efficiency. Utility Model Content
[0004] Aiming at the deficiencies of the prior art, this application provides a headrace grit chamber, which has advantages such as being easy to clean, and solves the problems raised in the background art.
[0005] To achieve the above object, this application provides the following technical solution: A headrace grit chamber includes a sand hopper. The outer surface of the sand hopper is fixedly communicated with a water inlet and a water outlet respectively. The upper surface of the sand hopper is rotatably connected with a stirring shaft. An air-lift pipe is rotatably connected inside the stirring shaft. An impeller is fixedly installed at the middle end of the stirring shaft. The outer surface of the bottom end of the stirring shaft is rotatably connected with a cleaning ring through a one-way bearing. The outer surface of the cleaning ring is fixedly connected with a plurality of connecting ribs arranged in a circumferential manner. The other end of each connecting rib is fixedly connected with a scraping plate. A rectangular through groove is opened on the outer surface of each scraping plate. Each scraping plate is in contact with the inner wall of the sand hopper;
[0006] The bottom end of the sand hopper is fixedly communicated with a sand discharge pipe. Two groups of water filtering holes are opened on the outer surface of the sand discharge pipe. Two water storage tanks are fixedly connected to the outer surface of the sand discharge pipe. Each group of water filtering holes is located inside the water storage tank close to it. A pushing shaft is rotatably connected between the left and right inner side walls of the sand discharge pipe. Two augers are fixedly connected to the outer surface of the pushing shaft. The two augers are arranged symmetrically.
[0007] Through the above solution, through the synergistic effect of the stirring shaft and the impeller, a vortex effect is formed, effectively promoting the rapid sedimentation of coarse particle impurities in the water flow, significantly improving the sand sedimentation efficiency. At the same time, the design of the water filtering holes on the sand discharge pipe realizes the separation of sand and water and dirt. Through the water storage tank, the water drained from the sand is collected, and through the pumping action of the water pump, the filtered water source is transported to the next treatment device, reducing the waste of water source and enabling the sand and gravel to be easily dried, facilitating subsequent treatment. The combined design of the cleaning ring and the scraping plate can automatically scrape the dirt layer on the inner wall of the sand sedimentation hopper while the stirring shaft rotates, effectively preventing the accumulation of dirt and the blockage of the channel. The setting of the rectangular through groove further reduces the disturbance to the water flow during scraping, ensuring the smooth progress of the cleaning process. The design of the cleaning ring and the scraping plate, when cleaning the dirt, reversely rotates the stirring shaft to lock the cleaning ring, thereby driving the scraping plate to automatically scrape the dirt layer on the inner wall of the sand sedimentation hopper, effectively preventing the accumulation of dirt and the blockage of the channel. The setting of the rectangular through groove further reduces the disturbance to the water flow during scraping, ensuring the smooth progress of the cleaning process.
[0008] Further, a plurality of vibrators arranged in a circle are fixedly connected to the outer surface of the sand sedimentation hopper.
[0009] Through the above solution, through the setting of the vibrator, when cleaning the sand sedimentation hopper, the sliding speed of the dirt can be accelerated through vibration.
[0010] Further, a motor is installed at the left end of the sand discharge pipe, and the output end of the motor is fixedly connected to one end of the pushing shaft.
[0011] Through the above solution, through the setting of the motor, power can be provided for the rotation of the pushing shaft.
[0012] Further, a first electric valve is installed at the bottom end of the sand sedimentation hopper.
[0013] Through the above solution, through the setting of the first electric valve, the closing at the bottom end of the sand sedimentation hopper can be controlled.
[0014] Further, sand discharge pipes are fixedly communicated with both the left and right bottoms of the sand discharge pipe, and second electric valves are installed at the bottom ends of the two sand discharge pipes.
[0015] Through the above solution, through the setting of the second electric valve, the purpose of closing control of the sand discharge pipe can be achieved.
[0016] Further, a power shaft is rotatably connected to the upper surface of the sand sedimentation hopper. Pulley wheels are fixedly connected to the outer surfaces of the power shaft and the stirring shaft, and the two pulley wheels are connected by transmission. The top end of the power shaft is fixedly connected to the output end of an external motor.
[0017] Through the above solution, through the setting of the external motor, power can be provided for the rotation of the stirring shaft.
[0018] Further, the top end of the sand suction pipe is communicated with the input end of a sewage suction pump outside.
[0019] Through the above solution and the above settings, it is possible to suck a part of the sand and stones at the bottom end of the grit bin.
[0020] Further, water pumps are provided at the bottom ends of the two water storage tanks, and the input ends of the two water pumps are fixedly communicated with the water storage tanks close to them.
[0021] Through the above solution, through the setting of the water pump, the purpose of pumping the filtered water source can be achieved. By connecting the output end of the water pump to the next processing device through a pipeline, the waste of water in the sand and stones can be avoided.
[0022] Compared with the prior art, the technical solution of the present application has the following beneficial effects:
[0023] For the grit chamber at the canal head, through the synergistic effect of the stirring shaft and the impeller, a vortex effect is formed, effectively promoting the rapid settlement of coarse particle impurities in the water flow, significantly improving the grit removal efficiency. At the same time, the design of the water filtering holes on the sand discharge pipe realizes the separation of sand and water and dirt. Through the water storage tank, the collection of the water drained from the sand, and the pumping action of the water pump, the filtered water source is transported to the next processing device, reducing the waste of water source, and enabling the sand and stones to be easily dried, facilitating subsequent processing. The combined design of the cleaning ring and the scraping plate can automatically scrape the dirt layer on the inner wall of the grit bin while the stirring shaft rotates, effectively preventing the accumulation of dirt and the blockage of the channel. The setting of the rectangular through groove further reduces the disturbance to the water flow during scraping, ensuring the smooth progress of the cleaning process. For the design of the cleaning ring and the scraping plate, when it is necessary to clean the dirt, by rotating the stirring shaft in the reverse direction, the cleaning ring is locked, and then the scraping plate is driven to automatically scrape the dirt layer on the inner wall of the grit bin, effectively preventing the accumulation of dirt and the blockage of the channel. The setting of the rectangular through groove further reduces the disturbance to the water flow during scraping, ensuring the smooth progress of the cleaning process. Description of the Drawings
[0024] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present application Figure 1 ;
[0025] Figure 2 is a three-dimensional schematic diagram of the overall structure of the present application Figure 2 ;
[0026] Figure 3 is a cross-sectional view of the front view of the overall structure of the present application;
[0027] Figure 4 is of the present application Figure 3 The enlarged schematic diagram of the structure at A in.
[0028] In the figure:
[0029] 1. Sand settling hopper; 2. Water inlet; 3. Water outlet; 4. Stirring shaft; 5. Sand suction pipe; 6. Impeller; 7. Cleaning ring; 8. Connecting rib; 9. Scraper plate; 10. Rectangular through slot; 11. Sand discharge pipe; 12. Water filtering hole; 13. Water storage tank; 14. Pushing shaft; 15. Auger; 16. Vibrator; 17. Motor; 18. First electric valve; 19. Sand outlet pipe; 20. Second electric valve; 21. Power shaft; 22. Pulley; 23. Water pump. Detailed implementation manners
[0030] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0031] Please refer to Figure 1 , Figure 3 and Figure 4 , a head sedimentation tank in this embodiment includes a sand settling hopper 1. The outer surface of the sand settling hopper 1 is respectively fixedly communicated with a water inlet 2 and a water outlet 3. The upper surface of the sand settling hopper 1 is rotatably connected with a stirring shaft 4. The inside of the stirring shaft 4 is rotatably connected with a sand suction pipe 5. Through the arrangement of the sand suction pipe 5, part of the sand at the bottom end of the sand settling hopper 1 can be sucked. The middle end of the stirring shaft 4 is fixedly installed with an impeller 6. Through the arrangements of the impeller 6 and the stirring shaft 4, the liquid can be driven to generate a vortex. The outer surface of the sand settling hopper 1 is fixedly connected with a plurality of vibrators 16 arranged in a circle. Through the arrangement of the vibrators 16, when cleaning the sand settling hopper 1, the downward sliding speed of dirt can be accelerated through vibration. The bottom end of the sand settling hopper 1 is provided with a first electric valve 18. Through the arrangement of the first electric valve 18, the closing of the bottom end of the sand settling hopper 1 can be controlled.
[0032] Please refer to Figure 1 , Figure 3 and Figure 4 , the outer surface of the bottom end of the stirring shaft 4 is rotatably connected with a cleaning ring 7 through a one-way bearing. When it is necessary to clean the dirt, the stirring shaft 4 is rotated in the reverse direction, so that the cleaning ring 7 is in a locked state, and then the cleaning ring 7 is driven to rotate. The outer surface of the cleaning ring 7 is fixedly connected with a plurality of connecting ribs 8 arranged in a circle. The other end of each connecting rib 8 is fixedly connected with a scraper plate 9. A rectangular through slot 10 is opened on the outer surface of each scraper plate 9. Each scraper plate 9 is in contact with the inner wall of the sand settling hopper 1. Through the arrangement of the rectangular through slot 10, the disturbance to the water flow during scraping can be reduced.
[0033] Please refer to Figure 1 ,Figure 2 and Figure 3 , a sand discharge pipe 11 is fixedly connected to the bottom end of the grit chamber 1. Two groups of water filtering holes 12 are formed in the outer surface of the sand discharge pipe 11. Through the arrangement of the water filtering holes 12, water in the sand can be separated. Two water storage tanks 13 are fixedly connected to the outer surface of the sand discharge pipe 11. Each group of water filtering holes 12 is located inside the water storage tank 13 close to it. Through the arrangement of the water storage tank 13, the purpose of collecting the water drained from the sand can be achieved. A pushing shaft 14 is rotatably connected between the left and right inner side walls of the sand discharge pipe 11. Two augers 15 are fixedly connected to the outer surface of the pushing shaft 14. The two augers 15 are symmetrically arranged. Through the symmetrically arranged augers 15, the sand and gravel discharged from the grit chamber 1 can be conveyed to both ends of the sand discharge pipe 11, thereby improving the processing efficiency of the sand. A motor 17 is installed at the left end of the sand discharge pipe 11. The output end of the motor 17 is fixedly connected to one end of the pushing shaft 14. Through the arrangement of the motor 17, power can be provided for the rotation of the pushing shaft 14.
[0034] Please refer to Figure 1 , Figure 2 and Figure 3 , sand discharge pipes 19 are fixedly connected to the bottoms of both the left and right ends of the sand discharge pipe 11. Second electric valves 20 are installed at the bottom ends of the two sand discharge pipes 19. Through the arrangement of the second electric valves 20, the purpose of closing control of the sand discharge pipes 19 can be achieved. A power shaft 21 is rotatably connected to the upper surface of the grit chamber 1. Pulley 22 are fixedly connected to the outer surfaces of the power shaft 21 and the stirring shaft 4. The two pulleys 22 are connected by a belt in transmission. The top end of the power shaft 21 is fixedly connected to the output end of an external motor. Through the arrangement of the external motor, power can be provided for the rotation of the stirring shaft 4.
[0035] Please refer to Figure 1 , Figure 2 and Figure 3 , the top end of the sand suction pipe 5 is communicated with the input end of an external sewage suction pump. Through the above arrangement, part of the sand and gravel at the bottom end of the grit chamber 1 can be sucked. Water pumps 23 are provided at the bottom ends of the two water storage tanks 13. The input ends of the two water pumps 23 are fixedly communicated with the water storage tanks 13 close to them. Through the arrangement of the water pumps 23, the purpose of pumping the filtered water source can be achieved. By connecting the output ends of the water pumps 23 to the next processing device through pipelines, the waste of water in the sand and gravel can be avoided.
[0036] A grit chamber at the head of a canal in this embodiment forms a vortex effect through the synergistic action of the stirring shaft 4 and the impeller 6, effectively promoting the rapid settlement of coarse particulate impurities in the water flow, significantly improving the grit removal efficiency. At the same time, the design of the water filtering holes 12 on the sand discharge pipe 11 achieves the purpose of separating sand, water, and dirt. Through the water storage tank 13, the collection of the water drained from the sand, and the pumping action of the water pump 23, the filtered water source is transported to the next treatment device, reducing the waste of water source and enabling the sand and stones to dry easily for subsequent treatment. The combined design of the cleaning ring 7 and the scraping plate 9 can automatically scrape the dirt layer on the inner wall of the grit hopper 1 while the stirring shaft 4 rotates, effectively preventing the accumulation of dirt and the blockage of the channel. The setting of the rectangular through groove 10 further reduces the disturbance of the water flow during scraping, ensuring the smooth progress of the cleaning process. The design of the cleaning ring 7 and the scraping plate 9, when dirt needs to be cleaned, reversely rotates the stirring shaft 4 to lock the cleaning ring 7, thereby driving the scraping plate 9 to automatically scrape the dirt layer on the inner wall of the grit hopper 1, effectively preventing the accumulation of dirt and the blockage of the channel. The setting of the rectangular through groove 10 further reduces the disturbance of the water flow during scraping, ensuring the smooth progress of the cleaning process.
[0037] The working principle of the above embodiment is as follows: First, the water flow enters the grit hopper 1 through the water inlet 2. At this time, the stirring shaft 4 starts to rotate under the drive of the motor, and the impeller 6 in the middle of the stirring shaft 4 rotates accordingly, driving the water flow to form a strong vortex effect. This vortex effect causes the coarse particulate impurities in the water flow, such as sediment and stones, to move radially under the action of centrifugal force and gradually deposit at the bottom of the grit hopper 1. At the same time, the external sewage suction pump starts to extract some sand and stones at the bottom end into the sand suction pipe 5 and transport them to the external treatment device. As the sediment and dirt accumulate, when sand discharge and dirt treatment are required, the stirring shaft 4 rotates reversely. Through the action of the one-way bearing, the cleaning ring 7 is locked and rotates synchronously with the stirring shaft 4, driving the scraping plate 9 to scrape the dirt along the inner wall. The design of the rectangular through groove 10 on the scraping plate 9 reduces the disturbance of the water flow during scraping and, in cooperation with the vibrator 16, can slow down the sliding of the dirt and particles. Subsequently, the first electric valve 18 is opened to allow the sediment to enter the sand discharge pipe 11. The two symmetrical augers 15 on the pushing shaft 14 rotate under the drive of the motor 17, transporting the sand and stones from the middle of the sand discharge pipe 11 to both ends. During the sand discharge process, the setting of the water filtering holes 12 effectively separates the sand from the water. The sand and stones fall to the bottom of the sand discharge pipe 11, while the water flows into the water storage tank 13 through the water filtering holes 12. The water pump 23 starts to pump out the water source inside the water storage tank 13 and transports it to the next treatment device through an external pipeline, saving water resources. By opening the second electric valve 20, the discharge of sand and stones can be achieved.
[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.
[0039] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A headworks grit chamber, comprising a grit hopper (1), characterized in that: The outer surface of the grit hopper (1) is fixedly connected to the water inlet (2) and the water outlet (3) respectively. The upper surface of the grit hopper (1) is rotatably connected to a stirring shaft (4). An ash suction pipe (5) is rotatably connected inside the stirring shaft (4). An impeller (6) is fixedly installed in the middle of the stirring shaft (4). The outer surface of the bottom end of the stirring shaft (4) is rotatably connected to a cleaning ring (7) through a one-way bearing. A plurality of connecting ribs (8) arranged in a circle are fixedly connected to the outer surface of the cleaning ring (7). The other end of each connecting rib (8) is fixedly connected to a scraping plate (9). A rectangular through groove (10) is formed on the outer surface of each scraping plate (9). Each scraping plate (9) is in contact with the inner wall of the grit hopper (1). The bottom end of the grit hopper (1) is fixedly connected to a sand discharge pipe (11). Two groups of water filtering holes (12) are formed on the outer surface of the sand discharge pipe (11). Two water storage tanks (13) are fixedly connected to the outer surface of the sand discharge pipe (11). Each group of water filtering holes (12) is located inside the water storage tank (13) close to it. A pushing shaft (14) is rotatably connected between the left and right inner side walls of the sand discharge pipe (11). Two augers (15) are fixedly connected to the outer surface of the pushing shaft (14). The two augers (15) are arranged symmetrically.
2. The headworks grit chamber according to claim 1, characterized in that: A plurality of vibrators (16) arranged in a circle are fixedly connected to the outer surface of the grit hopper (1).
3. The headworks grit chamber according to claim 1, characterized in that: A motor (17) is installed at the left end of the sand discharge pipe (11). The output end of the motor (17) is fixedly connected to one end of the pushing shaft (14).
4. A headworks grit chamber according to claim 1, characterized in that: A first electric valve (18) is installed at the bottom end of the grit hopper (1).
5. A headworks grit chamber according to claim 1, characterized in that: Sand discharge pipes (19) are fixedly connected to the bottoms of the left and right ends of the sand discharge pipe (11). Second electric valves (20) are installed at the bottoms of the two sand discharge pipes (19).
6. The grit chamber at the head of a canal according to claim 1, characterized in that: A power shaft (21) is rotatably connected to the upper surface of the grit hopper (1). Pulley wheels (22) are fixedly connected to the outer surfaces of the power shaft (21) and the stirring shaft (4). The two pulley wheels (22) are connected by a belt in transmission. The top end of the power shaft (21) is fixedly connected to the output end of an external motor.
7. The grit chamber at the head of a canal according to claim 1, characterized in that: The top end of the ash suction pipe (5) is communicated with the input end of an external sewage suction pump.
8. The headworks grit chamber according to claim 1, wherein: Water pumps (23) are arranged at the bottoms of the two water storage tanks (13). The input ends of the two water pumps (23) are fixedly connected to the water storage tanks (13) close to them.