Sewage treatment circulation grit chamber
By using a stirring motor to drive the stirring blades in the sand settling tank to enhance the vortex effect and the storage hopper sedimentation design, the problem of pipe blockage caused by sand and gravel rolling with the water flow is solved, the efficient separation and cleaning of sand and gravel is achieved, and the sewage treatment capacity is improved.
Patent Information
- Application Number
- CN202422287380.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-09-19
AI Technical Summary
In the existing grit chamber for sewage treatment, gravel easily rolls with the water flow, causing pipe blockage, and the gravel and mud at the bottom of the chamber are difficult to clean, affecting the sewage treatment capacity.
A stirring motor is used to drive the stirring shaft and stirring blades to enhance the vortex effect, so that the sand and gravel are separated from the water. The sand and gravel are settled through the storage hopper and are extracted by the sand suction device. The inclined inlet and outlet pipes are designed to maintain the laminar flow state and the screen plate prevents the passage of debris.
It effectively separates sand and water, prevents pipe blockage, simplifies the sand and gravel cleaning process, and improves sewage treatment efficiency.
Smart Images
Figure CN223336860U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sewage treatment equipment, in particular to a sewage treatment circulating grit chamber. Background Art
[0002] During its migration, flow, and collection, wastewater inevitably mixes with mud and sand. If sand is not removed through pre-sedimentation and separation, it will affect the operation of subsequent treatment equipment. Most importantly, it can wear out pumps, clog pipe networks, and interfere with or even disrupt the biochemical treatment process. Grit chambers are primarily used to remove sand particles larger than 0.2 mm and with a density greater than 2.65 tons per cubic meter, protecting pipes, valves, and other equipment from wear and blockage.
[0003] When sewage flows in an ordinary grit chamber, the smaller sand and gravel at the bottom of the chamber will roll with the water flow, causing the sand and gravel to still clog the gauze inside the pipe. In addition, the sand and gravel and mud at the bottom of the chamber are not easy to clean. Over time, its sewage treatment capacity is greatly reduced.
[0004] To this end, we propose a sewage treatment circulating grit chamber. Utility Model Content
[0005] In view of the deficiencies in the prior art, the present invention aims to provide a circulating grit chamber for sewage treatment.
[0006] The purpose of the utility model can be achieved through the following technical solutions:
[0007] A sewage treatment circulating grit chamber, comprising:
[0008] A grit chamber body, wherein a water storage chamber is provided inside the grit chamber body, a storage hopper is fixedly installed inside the grit chamber body through a support column, a cover plate is installed on the upper end of the grit chamber body, a stirring motor is installed on the upper end of the cover plate, an output shaft of the stirring motor is vertically downward, a stirring shaft is fixedly connected to the output shaft of the stirring motor, the stirring shaft passes through the cover plate and is located inside the grit chamber body, and a stirring blade is fixedly connected to the side end of a section of the stirring shaft located inside the grit chamber body;
[0009] A hose, one end of which is located inside the grit chamber body and near the bottom of the storage hopper, and the other end of which passes through the cover plate and is located at the upper end of the grit chamber body. The end of the hose located at the upper end of the grit chamber body is used to connect to the sand pumping device;
[0010] A water inlet pipe, one end of which is connected to the grit chamber body, and the water inlet pipe is in communication with the interior of the grit chamber body;
[0011] An outlet pipe, one end of which is connected to the grit chamber body, and the outlet pipe is communicated with the interior of the grit chamber body.
[0012] Preferably, the stirring motor is fixedly mounted on the upper end of the cover plate through a base, a limiting ring is fixedly mounted on the lower end of the base, and a limiting groove is provided inside the limiting ring.
[0013] Preferably, a limit block is fixedly installed on the side end of the stirring shaft, the limit block is adapted to the limit groove, and the limit block is rotatably connected to the limit groove.
[0014] Preferably, a section of the water inlet pipe away from the grit tank body is arranged in a tilted downward state, and the height of the water inlet pipe away from one end of the grit tank body is higher than the height of the water inlet pipe close to the grit tank body; a section of the water outlet pipe away from the grit tank body is arranged in a tilted downward state, and the height of the water outlet pipe away from one end of the grit tank body is lower than the height of the water outlet pipe close to the grit tank body; the height of the connection part between the water inlet pipe and the grit tank body is higher than the height of the connection part between the water outlet pipe and the grit tank body.
[0015] Preferably, the storage hopper has an inverted truncated cone structure, and the side end of the storage hopper is a smooth surface.
[0016] Preferably, a first groove is formed at the upper end of the water outlet pipe, and a sieve plate is installed at the first groove of the water outlet pipe.
[0017] Preferably, a second groove is further provided at the upper end of the water outlet pipe, and the second groove is located between the sand settling tank body and the first groove, and slide grooves are provided at both side ends of the water outlet pipe located at the second groove; a baffle is installed at the second groove, and sliders are fixedly connected to both side ends of the baffle, and the sliders are adapted to the slide grooves, and the baffle can slide on the water outlet pipe, and the baffle and the water outlet pipe are detachably connected by screws.
[0018] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:
[0019] Fixed connection: refers to a connection in which parts or components are fixed without any relative movement. There are two types of connections: detachable and non-detachable.
[0020] (1) Removable connection: Components are fastened together using screws, splines, wedge pins, etc. This type of connection allows for disassembly during maintenance without damaging the components. However, the connectors used must be of the correct specifications (e.g., length of bolts, keys, wedge pins) and properly tightened.
[0021] (2) Non-detachable connections: These mainly refer to welding, riveting, and tenoning. Since parts must be forged, sawed, or oxygen-cut for disassembly during repair or replacement, they are generally not reusable. Furthermore, attention should be paid to workmanship quality, technical inspection, and remedial measures (such as calibration and polishing) during connection.
[0022] The beneficial effects of the utility model are as follows: the device drives the stirring shaft to rotate through the stirring motor, thereby driving the stirring blades to rotate in the sewage, thereby enhancing the vortex effect and separating the water from the sand and gravel; since the density of the sand and gravel is greater than the density of water, the sand and gravel will slowly settle to the bottom of the storage hopper under the action of gravity, and then the sand and gravel accumulated at the bottom of the storage hopper will be pumped out of the sand settling tank body through the hose through the sand pumping device, thereby effectively separating the sand and gravel from the sewage, facilitating the subsequent treatment of the sewage. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0024] Figure 1 It is a schematic structural diagram of the overall embodiment of the utility model;
[0025] Figure 2 It is a cross-sectional view of the entire embodiment of the utility model;
[0026] Figure 3 This is an embodiment of the utility model Figure 2 Enlarged cross-sectional view at point A;
[0027] Figure 4 This is a cross-sectional view of the grit chamber body according to an embodiment of the present invention;
[0028] Figure 5 This is a schematic structural diagram of a stirring shaft according to an embodiment of the present utility model;
[0029] Figure 6 This is a schematic structural diagram of a limit ring according to an embodiment of the present utility model;
[0030] Figure 7 This is a schematic diagram of the structure of the water inlet pipe of the utility model embodiment Figure 1 ;
[0031] Figure 8 This is a schematic diagram of the structure of the water inlet pipe of the utility model embodiment Figure 2 ;
[0032] Figure 9 It is a structural schematic diagram of the baffle of an embodiment of the utility model.
[0033] Figure numerals: 1. grit chamber body; 2. water storage chamber; 3. storage hopper; 4. cover plate; 5. stirring motor; 6. stirring shaft; 7. hose; 8. water inlet pipe; 9. water outlet pipe; 10. base; 11. limiting ring; 12. limiting groove; 13. limiting block; 14. first groove; 15. sieve plate; 16. second groove; 17. slide; 18. baffle; 19. slider; 20. screw; 21. support column; 22. stirring blade. DETAILED DESCRIPTION
[0034] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0035] A sewage treatment circulating grit chamber, such as Figures 1-9 As shown, including:
[0036] A grit chamber body 1 is provided with a water storage chamber 2 inside the grit chamber body 1. A storage hopper 3 is fixedly installed inside the grit chamber body 1 through a support column 21. A cover plate 4 is installed at the upper end of the grit chamber body 1. A stirring motor 5 is installed at the upper end of the cover plate 4. The output shaft of the stirring motor 5 is vertically downward. A stirring shaft 6 is fixedly connected to the output shaft of the stirring motor 5. The stirring shaft 6 passes through the cover plate 4 and is located inside the grit chamber body 1. A stirring blade 22 is fixedly connected to the side end of a section of the stirring shaft 6 located inside the grit chamber body 1.
[0037] A hose 7, one end of which is located inside the grit chamber body 1 and close to the bottom of the storage hopper 3, and the other end of which passes through the cover plate 4 and is located at the upper end of the grit chamber body 1. The end of the hose 7 located at the upper end of the grit chamber body 1 is used to connect to the sand pumping device;
[0038] A water inlet pipe 8, one end of which is connected to the grit chamber body 1, and the water inlet pipe 8 is in communication with the interior of the grit chamber body 1;
[0039] The water outlet pipe 9 has one end connected to the grit chamber body 1 , and the water outlet pipe 9 is communicated with the interior of the grit chamber body 1 .
[0040] The device is mainly used for the sand and gravel sedimentation process of sewage treatment. When the device is used to settle sand and gravel, sewage flows into the grit chamber body 1 through the water inlet pipe 8, and the stirring motor 5 is started at the same time. After the stirring motor 5 is started, the stirring shaft 6 will be driven to rotate, thereby driving the stirring blade 22 to rotate. After the stirring blade 22 rotates, the vortex effect will be enhanced, thereby separating water and sand and gravel. Since the density of sand and gravel is greater than the density of water, the sand and gravel will slowly settle to the bottom of the storage hopper 3 under the action of gravity. When the sand and gravel at the bottom of the storage hopper 3 accumulate to a certain amount, the sand and gravel accumulated at the bottom of the storage hopper 3 are extracted to the outside of the grit chamber body 1 through the hose 7 by the sand pumping device; the treated sewage then flows out of the grit chamber body 1 through the outlet pipe 9 for subsequent treatment.
[0041] As a preferred embodiment of the present invention, Figure 1 、 Figure 3 as well as Figure 6 As shown, the stirring motor 5 is fixedly mounted on the upper end of the cover plate 4 via a base 10. A limit ring 11 is fixedly mounted on the lower end of the base 10, and a limit groove 12 is defined within the limit ring 11. The base 10 is provided to support the stirring motor 5; the limit ring 11 is provided to support the stirring shaft 6.
[0042] As a preferred embodiment of the present invention, Figure 3 、 Figure 5 As shown, a limit block 13 is fixedly installed on the side end of the stirring shaft 6, and the limit block 13 is adapted to the limit groove 12, and the limit block 13 is rotatably connected to the limit groove 12.
[0043] As a preferred embodiment of the present invention, Figure 2 As shown, the section of the water inlet pipe 8 away from the grit chamber body 1 is arranged in an inclined downward state, and the height of the water inlet pipe 8 away from the grit chamber body 1 is higher than the height of the water inlet pipe 8 close to the grit chamber body 1; the section of the water outlet pipe 9 away from the grit chamber body 1 is arranged in an inclined downward state, and the height of the water outlet pipe 9 away from the grit chamber body 1 is lower than the height of the water outlet pipe 9 close to the grit chamber body 1; the height of the connection between the water inlet pipe 8 and the grit chamber body 1 is higher than the height of the connection between the water outlet pipe 9 and the grit chamber body 1. In this device, the section of the water inlet pipe 8 away from the grit chamber body 1 is arranged in an inclined downward state, and the height of the water inlet pipe 8 away from the grit chamber body 1 is higher than the height of the water inlet pipe 8 close to the grit chamber body 1; this allows sewage to maintain a laminar flow when entering the sedimentation tank body through the water inlet pipe 8, avoiding sand and stone deposition.
[0044] As a preferred embodiment of the present invention, Figure 2As shown, the storage hopper 3 has an inverted truncated cone structure, and the side ends of the storage hopper 3 are smooth. The storage hopper 3 is used to store sand and gravel that settles during the sewage treatment process. Under the action of gravity, the sand and gravel will slowly settle to the bottom of the storage hopper 3. The storage hopper 3 is not set up in an inverted truncated cone structure, and the side ends of the storage hopper 3 are smooth, so that the sand and gravel can be concentrated and accumulated at the bottom of the storage hopper 3 during the sedimentation process, facilitating the sand extraction device to extract the sand and gravel accumulated at the bottom of the storage hopper 3.
[0045] As a preferred embodiment of the present invention, Figure 7 、 Figure 8 As shown, a first groove 14 is formed at the upper end of the outlet pipe 9, and a sieve plate 15 is installed in the first groove 14 of the outlet pipe 9. In this device, the sieve plate 15 is provided to block unsettled plastic debris inside the grit chamber body 1, preventing the unsettled plastic debris from flowing through the outlet pipe 9 to subsequent processing equipment.
[0046] As a preferred embodiment of the present invention, Figure 7-Figure 8 As shown, the upper end of the water outlet pipe 9 is further provided with a second groove 16, which is located between the grit chamber body 1 and the first groove 14. The water outlet pipe 9 is provided with chutes 17 on both sides of the second groove 16. A baffle 18 is installed at the second groove 16, and sliders 19 are fixedly connected to both sides of the baffle 18. The sliders 19 are adapted to the chutes 17. The baffle 18 can slide on the water outlet pipe 9, and the baffle 18 and the water outlet pipe 9 are detachably connected by screws 20. In this device, a detachable connection is set between the baffle 18 and the water outlet pipe 9, and the baffle 18 can slide on the water outlet pipe 9. When a large amount of plastic debris accumulates in the water outlet pipe 9, the baffle 18 can be removed to facilitate cleaning of the plastic debris in the water outlet pipe 9.
[0047] The working principle and use process of this utility model:
[0048] When using this device to settle sand and gravel, sewage flows into the grit chamber body 1 through the water inlet pipe 8, and the stirring motor 5 is started at the same time. After the stirring motor 5 is started, it drives the stirring shaft 6 to rotate, thereby driving the stirring blades 22 to rotate. The rotation of the stirring blades 22 strengthens the vortex effect, thereby separating the water and sand and gravel. Since the density of sand and gravel is greater than that of water, the sand and gravel will slowly settle to the bottom of the storage hopper 3 under the action of gravity. When the sand and gravel at the bottom of the storage hopper 3 accumulate to a certain amount, the sand and gravel accumulated at the bottom of the storage hopper 3 are pumped out of the grit chamber body 1 through the hose 7 by the sand pumping device; the treated sewage then flows out of the grit chamber body 1 through the outlet pipe 9 for subsequent treatment. During the process of the treated sewage flowing out of the outlet pipe 9, plastic debris with a density lower than that of water in the sewage will be blocked by the sieve plate 15 at the outlet pipe 9. When a large amount of plastic debris accumulates in the outlet pipe 9, the baffle 18 is removed and the plastic debris in the outlet pipe 9 is cleaned out.
[0049] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0050] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention.
Claims
1. A sewage treatment circulating grit chamber, characterized in that: include: A grit chamber body (1) is provided with a water storage chamber (2) inside the grit chamber body (1), a storage hopper (3) is fixedly installed inside the grit chamber body (1) via a support column (21), a cover plate (4) is installed on the upper end of the grit chamber body (1), a stirring motor (5) is installed on the upper end of the cover plate (4), an output shaft of the stirring motor (5) is vertically downward, a stirring shaft (6) is fixedly connected to the output shaft of the stirring motor (5), the stirring shaft (6) passes through the cover plate (4) and is located inside the grit chamber body (1), and a stirring blade (22) is fixedly connected to the side end of the stirring shaft (6) located inside the grit chamber body (1); A hose (7), one end of which is located inside the grit chamber body (1) and close to the bottom of the storage hopper (3), and the other end of which passes through the cover plate (4) and is located at the upper end of the grit chamber body (1). One end of the hose (7) located at the upper end of the grit chamber body (1) is used for connecting to a sand pumping device; A water inlet pipe (8), one end of which is connected to the grit chamber body (1), and the water inlet pipe (8) is in communication with the interior of the grit chamber body (1); An outlet pipe (9), one end of which is connected to the grit chamber body (1), and the outlet pipe (9) is in communication with the interior of the grit chamber body (1).
2. A sewage treatment circulating grit chamber according to claim 1, characterized in that: The stirring motor (5) is fixedly mounted on the upper end of the cover plate (4) via a base (10); a limiting ring (11) is fixedly mounted on the lower end of the base (10); and a limiting groove (12) is provided inside the limiting ring (11).
3. A sewage treatment circulating grit chamber according to claim 2, characterized in that: A limit block (13) is fixedly mounted on the side end of the stirring shaft (6), the limit block (13) is adapted to the limit groove (12), and the limit block (13) is rotatably connected to the limit groove (12).
4. A sewage treatment circulating grit chamber according to claim 3, characterized in that: The section of the water inlet pipe (8) away from the grit chamber body (1) is arranged in an inclined downward state, and the height of the water inlet pipe (8) away from one end of the grit chamber body (1) is higher than the height of the water inlet pipe (8) close to the grit chamber body (1); the section of the water outlet pipe (9) away from the grit chamber body (1) is arranged in an inclined downward state, and the height of the water outlet pipe (9) away from one end of the grit chamber body (1) is lower than the height of the water outlet pipe (9) close to the grit chamber body (1); the height of the connection portion between the water inlet pipe (8) and the grit chamber body (1) is higher than the height of the connection portion between the water outlet pipe (9) and the grit chamber body (1).
5. A sewage treatment circulating grit chamber according to claim 4, characterized in that: The storage hopper (3) is in the shape of an inverted truncated cone, and the side end of the storage hopper (3) is a smooth surface.
6. A sewage treatment circulating grit chamber according to claim 5, characterized in that: A first groove (14) is provided at the upper end of the water outlet pipe (9), and a sieve plate (15) is installed at the first groove (14) of the water outlet pipe (9).
7. A sewage treatment circulating grit chamber according to claim 6, characterized in that: The upper end of the water outlet pipe (9) is further provided with a second groove (16), the second groove (16) being located between the grit chamber body (1) and the first groove (14), and the water outlet pipe (9) is provided with chutes (17) at both ends of the second groove (16); a baffle (18) is installed at the second groove (16), and sliders (19) are fixedly connected to both ends of the baffle (18), the sliders (19) being adapted to the chutes (17), the baffle (18) being able to slide on the water outlet pipe (9), and the baffle (18) and the water outlet pipe (9) are detachably connected by screws (20).