An aerated grit chamber for sewage treatment

Abstract

The present invention relates to the technical field of sewage treatment, and specifically to an aerated grit chamber for sewage treatment, comprising an aerated grit chamber, wherein a water inlet is provided above one end of the aerated grit chamber, and a sand collecting trough is provided at the bottom of the aerated grit chamber, the sand collecting tank is arranged at the end of the aerated grit chamber away from the water inlet, the sand collecting tank is connected to the aerated grit chamber through the sand collecting trough, and a sand outlet is fixedly installed at the connection between the sand collecting trough and the sand collecting tank, and a sand collecting device is installed inside the sand collecting tank for automatically cleaning the sand at the bottom of the sand collecting tank to the outside of the sand collecting tank. By arranging the sand collecting device, the present invention solves the problem of being able to filter water in the sediment formed in the aerated grit chamber when cleaning, so that the treated sediment does not need to be separated from sand and water.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to an aerated grit chamber for sewage treatment. Background Art

[0002] Wastewater often contains a lot of sand and gravel. Aeration and sand settling are necessary before wastewater treatment. Aeration keeps inorganic particles in the wastewater suspended. Sand particles rub against each other and withstand the shear force of aeration, removing organic pollutants attached to the sand particles. After aeration, the sand particles settle.

[0003] The aerated grit chamber commonly seen in daily life is a long channel. After aeration, the sand particles are deposited in the long groove at the bottom of the aerated grit chamber. In order to clean the settled sand particles in the long groove, people set up a traveling device above the aerated grit chamber. The traveling device is equipped with a sand pumping device. The traveling device drives the sand pumping device to make reciprocating motion at the bottom of the tank to extract the sediment in the long groove. When extracting the sediment, a large amount of water is often pumped out. The extracted sediment also needs to be separated by sand and water to reduce the water content.

[0004] Therefore, an aerated grit chamber for sewage treatment is proposed. Summary of the Invention

[0005] The object of the present invention is to provide an aerated grit chamber for sewage treatment. By setting up a sand collecting device, the problem raised in the above-mentioned background technology is solved by filtering the water in the sediment formed in the aerated grit chamber when cleaning the sediment, so that the treated sediment does not need to be separated from sand and water.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An aerated grit chamber, wherein a water inlet is provided above one end of the aerated grit chamber, and a sand collecting trough is provided at the bottom of the aerated grit chamber;

[0008] The sand collecting tank is arranged at one end of the aerated grit chamber away from the water inlet, the sand collecting tank is connected to the aerated grit chamber through a sand collecting trough, and a sand outlet is fixedly installed at the connection between the sand collecting trough and the sand collecting tank;

[0009] A sand collecting device is installed inside the sand collecting pool, which automatically cleans the sand at the bottom of the sand collecting pool to the outside of the sand collecting pool.

[0010] Preferably, the sand collecting device includes a frame, which includes two side plates and multiple cross bars, a driving motor is fixedly installed above the side plates, and a driving shaft is installed above the two side plates for common rotation, a No. 1 sprocket is fixedly installed at both ends of the driving shaft, and one end of the driving shaft is fixedly connected to the output end of the driving motor, and a driven shaft is installed for common rotation below the two side plates, a No. 2 sprocket is fixedly installed at both ends of the driven shaft, the No. 1 sprocket is connected to the No. 2 sprocket through a chain, a plurality of sand collecting boxes are provided on the chain, the sand collecting boxes are fixedly connected to the chain through a connecting rod, a sand collecting plate is fixedly installed on the cross bar, and the sand collecting plate is located at the bottom end of the frame.

[0011] Preferably, the chain is made of nickel-chromium alloy metal material.

[0012] Preferably, the sand collecting box comprises a box body and a box bottom, and both the box body and the box bottom are provided with a plurality of water holes.

[0013] Preferably, elastic blocks are fixedly installed below the cross bar, on the bottom of the sand collecting tank, and on the wall of the sand collecting tank away from the aerated grit chamber, and the elastic blocks are provided with a plurality of semicircular protrusions.

[0014] Preferably, a cover is rotatably mounted on the sand collecting box, a spring hinge is provided on the sand collecting box, one end of the spring hinge is fixedly mounted on the cover, and the end of the spring hinge away from the cover is fixedly mounted on the box body, and a cover opening assembly is provided on the moving path of the sand collecting box.

[0015] Preferably, cylindrical protrusions are fixedly installed on both sides of the cover, and the cover opening assembly includes two trapezoidal baffles symmetrically fixedly installed on the sand collecting plate, and the two trapezoidal baffles cooperate with the cylindrical protrusions, and two arc-shaped dumping plates that cooperate with the cylindrical protrusions are symmetrically fixedly installed on the cross bar at the top.

[0016] Preferably, the sand collecting trough is inclined from the water inlet side toward the sand collecting pool.

[0017] Preferably, a sand pump is fixedly installed above the sand collecting pool, and the sand pump is connected to the bottom of the sand collecting pool through a pipeline.

[0018] Preferably, one side of the sand collecting pool is inclined upward from the bottom.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The aerated grit chamber for sewage treatment described in the present invention solves the problem of filtering out water from the sediment formed in the aerated grit chamber when cleaning the sediment, thereby eliminating the need for sand and water separation in the treated sediment, by providing a sand collecting device.

[0021] 2. The aerated grit chamber for sewage treatment described in the present invention solves the problem that the sediment entering the sand collecting box will not flow out of the sand collecting box with the flow of water by arranging a cover on the sand collecting box and an opening cover assembly on the walking path of the sand collecting box, and the lid can also be opened to collect and dump the sediment.

[0022] 3. The aerated grit chamber for sewage treatment described in the present invention solves the problem that the sediment formed in the sand collection tank over a long period of time affects the operation of the sand collecting device by providing a sand pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 Schematic diagram of the internal structure of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the sand collecting device of the present invention;

[0026] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 For the present invention Figure 3 Enlarged view of point B in the middle;

[0028] In the figure: 1. Aeration grit chamber; 2. Water inlet; 3. Sand collecting trough; 4. Sand outlet; 5. Sand collecting tank; 6. Cylindrical protrusion; 7. Sand pump; 8. Side panel; 9. Cross bar; 10. Driving motor; 11. Driving shaft; 12. Driven shaft; 13. Sprocket No. 1; 14. Sprocket No. 2; 15. Chain; 16. Sand collecting box; 17. Connecting rod; 18. Sand collecting plate; 19. Box body; 20. Box bottom; 21. Water hole; 22. Elastic block; 23. Lid; 24. Spring hinge; 25. Opening assembly; 26. Baffle; 27. Tipping plate. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0030] See also Figures 1 to 5 The present invention provides an aerated grit chamber for sewage treatment, and the technical solution is as follows:

[0031] An aerated grit chamber for sewage treatment, comprising:

[0032] An aerated grit chamber 1, wherein a water inlet 2 is provided above one end of the aerated grit chamber 1, and a sand collecting trough 3 is provided at the bottom of the aerated grit chamber 1;

[0033] The sand collecting pool 5 is arranged at one end of the aerated grit chamber 1 away from the water inlet 2. The sand collecting pool 5 is connected to the aerated grit chamber 1 through the sand collecting trough 3, and a sand outlet 4 is fixedly installed at the connection between the sand collecting trough 3 and the sand collecting pool 5;

[0034] A sand collecting device is installed inside the sand collecting pool 5 to automatically clean the sand at the bottom of the sand collecting pool 5 to the outside of the sand collecting pool 5.

[0035] During use, sewage enters the aerated grit chamber 1 through the water inlet 2 of the aerated grit chamber 1. The density of suspended particles and inorganic particles in the sewage is greater than the density of water. After the sewage is aerated by the aerated grit chamber 1, the suspended particles and inorganic particles in the sewage will settle on the sand collecting trough 3 at the bottom of the aerated grit chamber 1. The sediment on the sand collecting trough 3 is pushed by its own gravity and the water flow in the aerated grit chamber 1. The water mobility at the bottom of the aerated grit chamber 1 is small and cannot disperse the sand. The sediment enters the sand collecting tank 5 along the sand collecting trough 3 through the sand outlet 4. A sand collecting device is provided inside the sand collecting tank 5 for automatically cleaning the sediment in the sand collecting tank 5. The aerated sediment is processed and filtered by the sand collecting device. The aerated sediment is cleaned by setting the sand collecting device. The water in the sediment will be filtered during the cleaning process, and the sediment after cleaning does not need to be separated from sand and water.

[0036] The sand collecting device includes a frame, which includes two side plates 8 and multiple cross bars 9. A driving motor 10 is fixedly installed above the side plates 8. A driving shaft 11 is installed above the two side plates 8 for common rotation. A No. 1 sprocket 13 is fixedly installed at both ends of the driving shaft 11, and one end of the driving shaft 11 is fixedly connected to the output end of the driving motor 10. A driven shaft 12 is installed for common rotation below the two side plates 8. A No. 2 sprocket 14 is fixedly installed at both ends of the driven shaft 12. The No. 1 sprocket 13 is connected to the No. 2 sprocket 14 through a chain 15. A plurality of sand collecting boxes 16 are provided on the chain 15, and the sand collecting boxes 16 are fixedly connected to the chain 15 through a connecting rod 17. A sand collecting plate 18 is fixedly installed on the cross bar 9, and the sand collecting plate 18 is located at the bottom end of the frame.

[0037] A drive motor 10 is provided on the side plate 8 of the sand collecting device frame. The drive motor 10 rotates, driving the drive shaft 11 to rotate. The No. 1 sprocket 13 on the drive shaft 11 and the No. 2 sprocket 14 on the driven shaft 12 are driven through a chain 15. The guide wheel can prevent the chain from deflecting. The drive shaft 11 rotates, and the chain 15 rotates accordingly. The sand collecting box 16 is fixed to the chain 15 through the connecting rod 17. The rotation of the chain 15 drives the sand collecting box 16 to move, and the sediment comes out of the sand outlet 4 and falls onto the cross bar 9 of the frame. On the sand collecting plate 18, the sediment enters the sand collecting box 16 along the sand collecting plate 18, and the sand collecting box 16 with the collected sediment is driven to leave the sand collecting pool 5 by the rotation of the chain 15. When the sediment reaches the sand collecting box 16 with the opening downward, the sediment is poured out, and the top of the frame is tilted and extends out of the sand collecting pool 5 to ensure that the poured sediment falls into the outside of the sand collecting pool 5 and is collected, thereby preventing the poured sediment from falling back into the sand collecting pool 5. By arranging a sand collecting device inside the sand collecting pool 5, the sediment generated in the aerated grit tank 1 is removed.

[0038] The chain 15 is made of nickel-chromium alloy metal material.

[0039] The sand collecting device is arranged inside the sand collecting pool. The sand collecting device will be immersed in sewage for a long time. Sewage is corrosive to a certain extent. The chain 15 will be rusted when it is immersed in water for a long time. The chain 15 works in water and cannot be lubricated. It will produce more serious wear during the operation. After the chain 15 is rusted and worn, it may cause chain falling, chain jamming, etc. By using a chain 15 made of nickel-chromium alloy metal, the corrosion resistance and wear resistance of the chain 15 can be increased, thereby improving the service life of the chain 15.

[0040] The sand collecting box 16 includes a box body 19 and a box bottom 20 . Both the box body 19 and the box bottom 20 are provided with a plurality of water holes 21 .

[0041] By providing a plurality of water holes 21 on the box body 19 and the box bottom 20 of the sand collecting box 16, since the sand collecting box 16 collects sediment in the water, the collected sediment will contain a large amount of water. When the sand collecting box 16 moves out of the water surface along with the chain 15, the water in the sediment flows out through the water holes 21, reducing the moisture in the sediment and making it unnecessary to separate the discharged sediment from sand and water.

[0042] Elastic blocks 22 are fixedly installed below the crossbar 9, on the bottom of the sand collecting pool 5, and on the wall of the sand collecting pool 5 away from the aerated grit chamber 1. The elastic blocks 22 are provided with a plurality of semicircular protrusions.

[0043] When the sand collecting box 16 filters water, fine sand may clog the water holes 21. Elastic blocks 22 are provided below the cross bar 9 of the sand collecting device and on the wall of the sand collecting pool 5. When the sand collecting box 16 passes the position of the elastic block 22, the elastic block 22 will be squeezed. The multiple semicircular protrusions on the elastic block 22 will enter the water holes 21 and push out the fine sand in the water holes 21, thereby effectively preventing the water holes 21 from being clogged.

[0044] A cover 23 is rotatably mounted on the sand collecting box 16 , and a spring hinge 24 is provided on the sand collecting box 16 . One end of the spring hinge 24 is fixedly mounted on the cover 23 , and the end of the spring hinge 24 away from the cover 23 is fixedly mounted on the box body 19 . A cover opening assembly 25 is provided on the moving path of the sand collecting box 16 .

[0045] Since the sand collecting tank 5 is connected to the aerated sand settling tank 1 and the sand collecting box 16 moves with the chain 15, the water in the sand collecting tank 5 will produce a certain fluidity. In order to prevent the sediment entering the sand collecting box 16 from flowing away with the flow of water, a lid 23 is rotatably installed on the sand collecting box 16, and a spring hinge 24 is installed between the lid 23 and the box body 19. The sand collecting box 16 can close the lid 23 after collecting the sediment, and then open the lid 23 through the cover opening assembly 25 for collection and dumping.

[0046] Cylindrical protrusions 6 are fixedly installed on both sides of the cover 23. The cover opening assembly 25 includes two trapezoidal baffles 26 symmetrically fixedly installed on the sand collecting plate 18, and the two trapezoidal baffles 26 cooperate with the cylindrical protrusions 6. Two arc-shaped dumping plates 27 that cooperate with the cylindrical protrusions 6 are symmetrically fixedly installed on the cross bar 9 at the top.

[0047] When the sand collecting box 16 moves to the sand collecting plate 18, the cylindrical protrusion 6 on the cover 23 of the sand collecting box 16 moves along the inclined surface of the trapezoidal baffle 26, driving the cover 23 of the sand collecting box 16 to gradually open for collection. When the sand collecting box 16 leaves the sand collecting plate 18, the cover 23 of the sand collecting box 16 is closed. When the sand collecting box 16 moves above the sand collecting device, the cylindrical protrusion 6 on the cover 23 of the sand collecting box 16 moves along the arc surface of the dumping plate 27, driving the cover 23 of the sand collecting box 16 to gradually open. When the sand collecting box 16 opens downward, the cover 23 is fully opened to dump the sediment. By providing the cover opening assembly 25, the closed cover 23 can be opened to collect and dump the sediment.

[0048] The sand collecting trough 3 is inclined from one side of the water inlet 2 toward the sand collecting pool 5 .

[0049] By providing the inclined sand collecting trough 3 , the sediment generated in the aerated grit chamber 1 can smoothly enter the sand collecting tank 5 under the action of its own gravity and the water flow of the aerated grit chamber 1 , thereby preventing the sediment from accumulating in the sand collecting trough 3 .

[0050] A sand pump 7 is fixedly installed above the sand collecting pool 5, and the sand pump 7 is connected to the bottom of the sand collecting pool 5 through a pipeline.

[0051] Since the sand collecting tank 5 is connected to the aerated grit chamber 1, a small amount of sediment will also be produced in the sand collecting tank 5. Over time, a large amount of sediment will accumulate. In order to prevent the sediment accumulated in the sand collecting tank 5 for a long time from affecting the sand collecting device, a sand pump 7 is provided to perform irregular processing on the sediment at the bottom of the sand collecting tank 5.

[0052] One side of the sand collecting pool 5 is tilted upward from the bottom.

[0053] One side of the sand collecting pool 5 is arranged to be tilted upward from the bottom, so that the sediment accumulation area generated in the sand collecting pool 5 is reduced, making it easier to clean the sand pump 7.

[0054] Working principle: When in use, sewage enters the aerated grit chamber 1 from the water inlet 2. After the sewage is aerated by the aerated grit chamber 1, the inorganic particles and suspended particles in the sewage will form sediments and settle into the inclined sand collecting trough 3 at the bottom of the aerated grit chamber 1. Pushed by the water flow and its own gravity, the sediments can smoothly enter the sand collecting tank 5 through the sand outlet 4 along the inclined sand collecting trough 3; a sand collecting device is provided in the sand collecting tank 5, and a drive motor 10 is provided on the side panel 8 of the sand collecting device frame. The drive motor 10 rotates, driving the drive shaft 11 to rotate. The No. 1 sprocket 13 on the drive shaft 11 is driven by the No. 2 sprocket 14 on the driven shaft 12 through the chain 15. The No. 2 sprocket 14 can prevent the chain from deflecting. The drive shaft 11 rotates, and the chain 15 follows The sand collecting box 16 is fixed to the chain 15 through the connecting rod 17. The rotation of the chain 15 drives the sand collecting box 16 to move, and the sediment comes out of the sand outlet 4 and falls on the sand collecting plate 18 on the frame cross bar 9. When the sand collecting box 16 moves to the sand collecting plate 18, the cylindrical protrusion 6 on the cover 23 of the sand collecting box 16 moves along the inclined surface of the trapezoidal baffle 26 on the sand collecting plate 18, driving the cover 23 of the sand collecting box 16 to gradually open for sand collection. When the sand collecting box 16 leaves the sand collecting plate 18, the cover 23 of the sand collecting box 16 is closed by the spring hinge 24. When the sand collecting box 16 moves to the top of the sand collecting device, the cylindrical protrusion 6 on the cover 23 of the sand collecting box 16 moves along the arc surface of the dumping plate 27, driving the cover 23 of the sand collecting box 16 The sand collecting box 16 is gradually opened, and the lid 23 is fully opened to dump the sediment when the sand collecting box 16 opens downwards; the lid opening assembly 25 is provided so that the closed lid 23 can be opened to collect and dump the sediment; a plurality of water holes 21 are provided on the box body 19 and the box bottom 20 of the sand collecting box 16, because the sand collecting box 16 collects sediment in the water, the collected sediment will carry a large amount of water, and when the sand collecting box 16 moves away from the water surface along with the chain 15, the water in the sediment will flow out along the water holes 21, reducing the water in the sediment, so that the discharged sediment does not need to be separated from sand and water. Since the sediment may contain fine particles, the elastic block 22 is provided to prevent the water holes 21 on the sand collecting box 16 from being blocked; the sand collecting device is provided on the sand collecting box Inside the sand pool, the sand collecting device needs to be immersed in sewage for a long time. Sewage is corrosive to a certain extent. The chain 15 will be rusted if it is immersed in water for a long time. After the chain 15 is rusted, it may cause chain falling, chain jamming, etc. By using a nickel-chromium alloy chain 15, the service life of the chain 15 can be improved; since the sand collecting pool 5 is connected to the aerated grit chamber 1, a small amount of sediment will also be produced in the sand collecting pool 5. Over time, more sediment will accumulate. In order to avoid the long-term accumulation of sediment in the sand collecting pool 5 affecting the sand collecting device, a sand pump 7 is provided to perform irregular processing on the sediment at the bottom of the sand collecting pool 5. One side of the sand collecting pool 5 is set to be inclined upward from the bottom, so that the sediment accumulation area produced in the sand collecting pool 5 is reduced, which is convenient for cleaning the sand pump 7.The electrical components appearing in this article are all connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device that controls a computer, etc. The product model provided by the present invention is only used for the purpose of this technical solution based on the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more compatible with and in line with the technical solution of the present invention. It is a technical solution for the best application of this technical solution. The model of its product can be replaced and modified according to the technical parameters required. It is well known to technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the present invention.

[0055] While embodiments of the present invention have been shown and described, it will be appreciated 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 invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An aerated grit chamber for sewage treatment, characterized in that: include: An aerated grit chamber (1), wherein a water inlet (2) is provided above one end of the aerated grit chamber (1), and a sand collecting trough (3) is provided at the bottom of the aerated grit chamber (1); A sand collecting pool (5) is provided at one end of the aerated grit chamber (1) away from the water inlet (2), the sand collecting pool (5) is connected to the aerated grit chamber (1) via a sand collecting trough (3), and a sand outlet (4) is fixedly installed at the connection between the sand collecting trough (3) and the sand collecting pool (5); A sand collecting device is installed inside the sand collecting pool (5) to automatically clean the sediment at the bottom of the sand collecting pool (5) to the outside of the sand collecting pool (5); The sand collecting device comprises a frame, the frame comprising two side plates (8) and a plurality of cross bars (9), a driving motor (10) is fixedly mounted above the side plates (8), a driving shaft (11) is mounted on the two side plates (8) for common rotation, a No. 1 sprocket (13) is fixedly mounted at both ends of the driving shaft (11), and one end of the driving shaft (11) is fixedly connected to the output end of the driving motor (10), a driven shaft (12) is mounted on the two side plates (8) for common rotation, a guide wheel (14) is fixedly mounted at both ends of the driven shaft (12), the No. 1 sprocket (13) is connected to the guide wheel (14) through a chain (15), a plurality of sand collecting boxes (16) are provided on the chain (15), the sand collecting boxes (16) are fixedly connected to the chain (15) through a connecting rod (17), a sand collecting plate (18) is fixedly mounted on the cross bar (9), and the sand collecting plate (18) is located at the bottom end of the frame; The chain (15) is made of nickel-chromium alloy metal material; The sand collecting box (16) comprises a box body (19) and a box bottom (20), and a plurality of water holes (21) are provided on the box body (19) and the box bottom (20); Elastic blocks (22) are fixedly installed below the crossbar (9), on the bottom of the sand collecting pool (5), and on the wall of the sand collecting pool (5) away from the aerated grit chamber (1), and the elastic blocks (22) are provided with a plurality of semicircular protrusions; A cover (23) is rotatably mounted on the sand collecting box (16), a spring hinge (24) is provided on the sand collecting box (16), one end of the spring hinge (24) is fixedly mounted on the cover (23), and the end of the spring hinge (24) away from the cover (23) is fixedly mounted on the box body (19), and a cover opening assembly (25) is provided on the moving path of the sand collecting box (16); Cylindrical protrusions (6) are fixedly mounted on both sides of the cover (23); the cover opening assembly (25) comprises two trapezoidal baffles (26) symmetrically fixedly mounted on the sand collecting plate (18); and the two trapezoidal baffles (26) are mutually matched with the cylindrical protrusions (6); and two arc-shaped dumping plates (27) are symmetrically fixedly mounted on the cross bar (9) at the top end and are mutually matched with the cylindrical protrusions (6).

2. The aerated grit chamber for sewage treatment according to claim 1, characterized in that: The sand collecting trough (3) is inclined from one side of the water inlet (2) toward the sand collecting pool (5).

3. The aerated grit chamber for sewage treatment according to claim 1, characterized in that: A sand pump (7) is fixedly installed above the sand collecting pool (5), and the sand pump (7) is connected to the bottom of the sand collecting pool (5) through a pipeline.

4. The aerated grit chamber for sewage treatment according to claim 3, characterized in that: One side of the sand collecting pool (5) is inclined upward from the bottom.

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