Grid aeration sand setting pretreatment combined device

Abstract

The utility model discloses a grid aeration sand setting pretreatment combined device, and relates to the technical field of sewage treatment. The device comprises an aeration box, the side face of the aeration box is fixedly connected with a water inlet pipe, a first slag discharging assembly, a sand pushing assembly, a second slag discharging assembly and a water outlet assembly are arranged in the aeration box, the bottom of the aeration box is fixedly connected with the sand discharging assembly, and the outer surface of the aeration box is fixedly connected with an aeration assembly. According to the utility model, through the connection of the sand pushing assembly and the aeration box, after sand in sewage sinks to the bottom in the aeration box, the sand pushing assembly pushes the sand to move to the sand outlet assembly, the sand outlet assembly drives the sand to move and discharges the sand out of the aeration box, and a first guide plate and a second guide plate in the aeration box can block scum, so that the aeration effect is improved. And the first slag discharging assembly and the second slag discharging assembly are both located in the aeration box, sewage pretreatment is completed in the aeration box, and the structure is more compact.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to a grid aeration and sand settling pretreatment combined device. Background Art

[0002] Wastewater treatment refers to the process of purifying wastewater to meet the water quality requirements for discharge into a water body or reuse. There are many ways to treat wastewater, which can generally be summarized as physical, chemical and biological methods. Among them, the physical method mainly uses physical effects to separate insoluble substances in wastewater, and does not change the chemical properties during the treatment process. Commonly used devices in the physical method include mechanical screens and aerated grit chambers.

[0003] Mechanical screens and aerated grit chambers are often used in the pretreatment stage of wastewater treatment. Mechanical screens use the rolling rotation of rake teeth to lift floating debris in sewage to the ground and discharge it into the water body. Aerated grit chambers use the stirring of gas in water to separate sand and gravel in the water and settle them at the bottom of the tank. Lighter suspended matter floats up under the action of bubbles and is discharged from the water body. However, traditional mechanical screens and aerated grit chambers are mostly dispersed, with problems such as complex and bulky equipment configuration and difficulty in maintenance.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a grid aeration and sand settling pretreatment combined device to overcome the above technical problems existing in the existing related technology.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a grid aeration and sand settling pretreatment combined device, comprising an aeration box, a water inlet pipe is fixedly connected to the side of the aeration box, a first slag discharge component, a sand pushing component, a second slag discharge component and a water outlet component are arranged inside the aeration box, a sand discharge component is fixedly connected to the bottom of the aeration box, an aeration component is fixedly connected to the outer surface of the aeration box, a first guide plate and a second guide plate are fixedly connected to the inside of the aeration box, the first slag discharge component is used for preliminarily filtering sewage in the water inlet pipe and discharging grid residue, the sand pushing component is used for pushing sand and gravel settled in the sewage to move, the sand discharge component is used for discharging sand and gravel, the second slag discharge component is used for discharging floating scum, the aeration component is used for aeration treatment of sewage in the aeration box, and the first guide plate and the second guide plate are used for guiding the flow direction of sewage.

[0008] Furthermore, the first slag discharge component includes a perforated grille, which is fixedly installed inside the aeration box. A connecting slot is opened inside the aeration box, and the connecting slot is located below the perforated grille. A first slag discharge pipe is fixedly connected to the outer surface of the perforated grille, and a first motor is fixedly connected to the end of the first slag discharge pipe, and a slag discharge spiral is fixedly connected to the output shaft of the first motor.

[0009] Furthermore, the sand pushing assembly includes a sand pushing motor, which is fixedly mounted on the outer surface of the aeration box. A sand pushing spiral is fixedly connected to the output shaft of the sand pushing motor, and the sand pushing spiral is rotatably connected to the inside of the aeration box.

[0010] Furthermore, the sand production component includes a connecting pipe, which is fixedly connected to the bottom of the aeration box, and the end of the connecting pipe is fixedly connected to a sand production pipe, and the end of the sand production pipe is fixedly connected to a sand production motor, and the output shaft of the sand production motor is fixedly connected to a sand production spiral, and the sand production spiral is rotatably connected to the inside of the sand production pipe. The connecting pipe provides a moving path for sand and gravel from the sand pushing spiral to reach the sand production spiral.

[0011] Furthermore, the second slag discharge assembly includes a second motor, which is fixedly installed on the outside of the aeration box, and the output shaft of the second motor is drivingly connected to a rotating shaft, and a scraper plate is fixedly connected to the outer surface of the rotating shaft, and a slag weir is arranged on the side of the scraper plate, and the slag weir is fixedly connected to the inside of the aeration box, and a second slag discharge pipe is fixedly connected to the inside of the slag weir, and the end of the second slag discharge pipe extends to the outside of the aeration box.

[0012] Furthermore, the water outlet assembly includes a water outlet weir, the water outlet weir is fixedly connected to the inside of the aeration box, the inside of the water outlet weir is fixedly connected to a water outlet pipe, and the end of the water outlet pipe extends to the outside of the aeration box.

[0013] Furthermore, the aeration assembly includes an aeration pipe, one end of which extends to the interior of the aeration box, the other end of which is fixedly connected to a flange, the outer surface of the aeration pipe is fixedly connected to a connecting ear, and the connecting ear is fixedly connected to the outer surface of the aeration box.

[0014] Furthermore, a support leg is fixedly connected to the bottom of the aeration box.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model connects the sand pushing component and the aeration box. After the sand and gravel in the sewage sink to the bottom in the aeration box, the sand pushing component pushes the sand and gravel to the sand outlet component. The sand outlet component drives the sand and gravel to move and discharge it out of the aeration box. The first guide plate and the second guide plate in the aeration box can block the scum and prevent the scum from being discharged from the water outlet component. The first scum outlet component and the second scum outlet component are both located in the aeration box. The pretreatment of the sewage is completed in the aeration box, and the structure is more compact.

[0017] 2. The utility model changes the traditional rotary mechanical grille into a perforated grille by connecting the perforated grille and the aeration box. The filtration accuracy can be controlled by changing the aperture of the perforated grille. At the same time, the perforated grille is lighter than the traditional rotary mechanical grille. The sludge suction pump and the crane are removed from the aeration box and improved into a slag discharge spiral and a sand discharge spiral. At this time, the first motor and the sand discharge motor for driving the slag discharge spiral and the sand discharge spiral are both located outside the aeration box, which is convenient for equipment maintenance.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the utility model embodiments, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the left front structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the right front structure of the utility model;

[0022] Figure 3 This is a schematic cross-sectional structural diagram of the first slag discharge assembly of the utility model;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the aeration box of the utility model.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Aeration box; 2. Water inlet pipe; 3. First slag discharge assembly; 301. Perforated grille; 302. Connecting notch; 303. First slag discharge pipe; 304. First motor; 305. Slag discharge spiral; 4. Sand pushing assembly; 401. Sand pushing motor; 402. Sand pushing spiral; 5. Sand discharge assembly; 501. Connecting pipe; 502. Sand discharge pipe; 503. Sand discharge motor; 504. Sand discharge spiral; 6. Second slag discharge assembly; 601. Second motor; 602. Rotating shaft; 603. Slag scraper; 604. Slag discharge weir; 605. Second slag discharge pipe; 7. Water discharge assembly; 701. Water discharge weir; 702. Water discharge pipe; 8. Aeration assembly; 801. Aeration pipe; 802. Flange; 803. Connecting ear; 9. First guide plate; 10. Second guide plate; 11. Support leg. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] See also Figure 1-Figure 4 As shown, the utility model is a grid aeration and sand settling pretreatment combined device, comprising an aeration box 1, a water inlet pipe 2 is fixedly connected to the side of the aeration box 1, a first slag discharge component 3, a sand pushing component 4, a second slag discharge component 6 and a water outlet component 7 are arranged inside the aeration box 1, a sand discharge component 5 is fixedly connected to the bottom of the aeration box 1, an aeration component 8 is fixedly connected to the outer surface of the aeration box 1, a first guide plate 9 and a second guide plate 10 are fixedly connected inside the aeration box 1, the first slag discharge component 3 is used to preliminarily filter the sewage in the water inlet pipe 2 and discharge the grid residue, the sand pushing component 4 is used to push the sand and gravel settled in the sewage to move, the sand discharge component 5 is used to discharge sand and gravel, the second slag discharge component 6 is used to discharge scum, the aeration component 8 is used to aerate the sewage in the aeration box 1, and the first guide plate 9 and the second guide plate 10 are used to guide the flow direction of the sewage.

[0029] The sewage is flushed into the water pipe 2 and passed into the aeration box 1 and is initially filtered by the first slag discharge component 3. The slag in the sewage remains on the first slag discharge component 3. The first slag discharge component 3 is started to rotate to gradually drive the impurities to move and discharge them out of the aeration box 1. The remaining sewage passes through the first slag discharge component 3 and continues to flow into the aeration box 1. The sand and gravel in the sewage have a large density and will sink to the bottom of the aeration box 1. The sand pushing component 4 rotates and pushes the sand and gravel to the left side of the aeration box 1. After moving to the left side of the aeration box 1, the sand and gravel fall to the discharge box 1. In the sand assembly 5, the sand discharge assembly 5 rotates and drives the sand and gravel to move and discharge them. Some impurities in the aeration box 1 have a lower density and float on the water surface. At this time, the second slag discharge assembly 6 is started to rotate. The second slag discharge assembly 6 picks up and discharges the impurities on the water surface in the aeration box 1. The gas reaches the aeration box 1 through the aeration assembly 8 to aerate the sewage. The sewage in the aeration box 1 will be blocked by the first guide plate 9 and the second guide plate 10 when flowing, and the treated sewage is discharged from the water outlet assembly 7 to the outside of the aeration box 1.

[0030] The utility model connects the sand pushing component 4 and the aeration box 1. After the sand and gravel in the sewage sink to the bottom in the aeration box 1, the sand pushing component 4 pushes the sand and gravel to move to the sand outlet component 5. The sand outlet component 5 drives the sand and gravel to move and discharge it to the outside of the aeration box 1. The first guide plate 9 and the second guide plate 10 in the aeration box 1 can block the scum and prevent the scum from being discharged from the water outlet component 7. The first scum outlet component 3 and the second scum outlet component 6 are both located in the aeration box 1. The pretreatment of the sewage is completed in the aeration box 1, and the structure is more compact.

[0031] In one embodiment, for the above-mentioned first slag discharge component 3, the first slag discharge component 3 includes a perforated grille 301, the perforated grille 301 is fixedly installed inside the aeration box 1, a connecting slot 302 is opened inside the aeration box 1, and the connecting slot 302 is located below the perforated grille 301, and a first slag discharge pipe 303 is fixedly connected to the outer surface of the perforated grille 301, and a first motor 304 is fixedly connected to the end of the first slag discharge pipe 303, and a slag discharge spiral 305 is fixedly connected to the output shaft of the first motor 304.

[0032] The sewage passes through the perforated grille 301 and flows into the interior of the aeration box 1 from the connecting slot 302. Some impurities in the sewage remain on the perforated grille 301. Under the impact of the subsequent water flow, these impurities move along the perforated grille 301 to the first slag discharge pipe 303. The first motor 304 drives the slag discharge screw 305 to rotate in the first slag discharge pipe 303. The slag discharge screw 305 can drive the impurities to move and discharge them out of the first slag discharge pipe 303. Through the connection between the slag discharge pipe 303 and the perforated grille 301, the impurities on the perforated grille 301 can be directly discharged from the slag discharge pipe 303 to avoid the accumulation of impurities on the perforated grille 301.

[0033] In one embodiment, for the above-mentioned sand pushing component 4, the sand pushing component 4 includes a sand pushing motor 401, which is fixedly installed on the outer surface of the aeration box 1, and a sand pushing screw 402 is fixedly connected to the output shaft of the sand pushing motor 401, and the sand pushing screw 402 is rotatably connected to the inside of the aeration box 1.

[0034] Start the sand pushing motor 401, which drives the sand pushing screw 402 to rotate in the aeration box 1, so as to push the sand and gravel at the bottom of the aeration box 1, so that this part of the sand and gravel moves to the left side of the aeration box 1 and falls into the sand outlet assembly 5, thereby preventing the sand and gravel from accumulating inside the aeration box 1.

[0035] In one embodiment, for the above-mentioned sand production component 5, the sand production component 5 includes a connecting pipe 501, the connecting pipe 501 is fixedly connected to the bottom of the aeration box 1, the end of the connecting pipe 501 is fixedly connected to the sand production pipe 502, the end of the sand production pipe 502 is fixedly connected to the sand production motor 503, the output shaft of the sand production motor 503 is fixedly connected to the sand production spiral 504, the sand production spiral 504 is rotatably connected to the inside of the sand production pipe 502, and the connecting pipe 501 provides a moving path for sand and gravel to reach the sand production spiral 504 from the sand pushing spiral 402.

[0036] After the sand and gravel move to the left side of the aeration box 1, they fall into the connecting pipe 501, and reach the sand outlet pipe 502 through the connecting pipe 501. The sand outlet motor 503 is started to drive the sand outlet spiral 504 to rotate in the sand outlet pipe 502. The sand outlet spiral 504 drives the sand and gravel to move and discharge it out of the sand outlet pipe 502. Through the connection between the connecting pipe 501 and the aeration box 1, the connecting pipe 501 is located at the bottom of the aeration box 1 and is inclined. When the sand and gravel move to the left side of the aeration box 1, they can directly reach the sand outlet pipe 502 along the connecting pipe 501 to avoid the accumulation of sand and gravel in the aeration box 1.

[0037] In one embodiment, for the above-mentioned second slag discharge component 6, the second slag discharge component 6 includes a second motor 601, the second motor 601 is fixedly installed on the outside of the aeration box 1, and the output shaft of the second motor 601 is drivingly connected with a rotating shaft 602, and the outer surface of the rotating shaft 602 is fixedly connected with a scraper plate 603, and the side of the scraper plate 603 is provided with a slag weir 604, and the slag weir 604 is fixedly connected to the inside of the aeration box 1, and the inside of the slag weir 604 is fixedly connected with a second slag discharge pipe 605, and the end of the second slag discharge pipe 605 extends to the outside of the aeration box 1.

[0038] The second motor 601 is started, and the second motor 601 drives the rotating shaft 602 and the scraper plate 603 to rotate. The scraper plate 603 scoops up the impurities floating on the water surface, and pours the impurities into the slag weir 604 through the rotation of the scraper plate 603. The impurities are discharged from the second slag discharge pipe 605 along the slag discharge weir 604.

[0039] In one embodiment, for the above-mentioned water outlet component 7, the water outlet component 7 includes a water outlet weir 701, and the water outlet weir 701 is fixedly connected to the inside of the aeration box 1. The inside of the water outlet weir 701 is fixedly connected with a water outlet pipe 702, and the end of the water outlet pipe 702 extends to the outside of the aeration box 1.

[0040] The gravel with higher density in the sewage in the aeration box 1 sinks to the bottom, and the impurities with lower density float up. The remaining impurities in the aeration box 1 with approximately the same density as water will be blocked by the first guide plate 9 and the second guide plate 10, so that the impurities in the water at the outlet weir 701 in the aeration box 1 are greatly reduced. When the water level is higher than the outlet weir 701, this part of the water can flow into the outlet weir 701 and be discharged from the outlet pipe 702.

[0041] In one embodiment, for the above-mentioned aeration assembly 8, the aeration assembly 8 includes an aeration pipe 801, one end of the aeration pipe 801 extends to the interior of the aeration box 1, the other end of the aeration pipe 801 is fixedly connected to a flange 802, and the outer surface of the aeration pipe 801 is fixedly connected to a connecting ear 803, and the connecting ear 803 is fixedly connected to the outer surface of the aeration box 1.

[0042] The aeration pipe 801 is connected to the gas pipe through the flange 802, and the gas reaches the aeration box 1 through the aeration pipe 801, aerating the sewage in the aeration box 1 to prevent the suspended matter from sinking, strengthen the contact between the organic matter in the pool and the microorganisms and dissolved oxygen, and oxidize and decompose the organic matter in the sewage.

[0043] In one embodiment, for the aeration box 1 , a support leg 11 is fixedly connected to the bottom of the aeration box 1 .

[0044] The support legs 11 are also fixedly connected to the sand outlet pipe 502 , and the support legs 11 can provide fixed support for the aeration box 1 and the sand outlet pipe 502 , making them more firmly placed and avoiding unnecessary shaking of the aeration box 1 and the sand outlet pipe 502 .

[0045] Through the above technical solution, 1. Through the connection between the sand pushing component 4 and the aeration box 1, after the sand and gravel in the sewage sink to the bottom in the aeration box 1, the sand pushing component 4 pushes the sand and gravel to move to the sand outlet component 5, and the sand outlet component 5 drives the sand and gravel to move and discharge it to the outside of the aeration box 1. The first guide plate 9 and the second guide plate 10 in the aeration box 1 can block the scum and prevent the scum from being discharged from the water outlet component 7. The first scum outlet component 3 and the second scum outlet component 6 are both located in the aeration box 1. The pretreatment of the sewage is completed in the aeration box 1, and the structure is more Compact; 2. By connecting the perforated grille 301 and the aeration box 1, the traditional rotary mechanical grille is replaced by a perforated grille. Changing the aperture of the perforated grille can control the filtering accuracy. At the same time, the perforated grille 301 is lighter than the traditional rotary mechanical grille. The sludge suction pump and the crane are removed from the aeration box 1, and improved to a slag discharge screw 305 and a sand discharge screw 504. At this time, the first motor 304 and the sand discharge motor 503 used to drive the slag discharge screw 305 and the sand discharge screw 504 are both located outside the aeration box 1, which is convenient for equipment maintenance.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A grid aeration and grit pretreatment combined device, comprising an aeration box (1), characterized in that: The side of the aeration box (1) is fixedly connected to a water inlet pipe (2); the interior of the aeration box (1) is provided with a first slag discharge component (3), a sand pushing component (4), a second slag discharge component (6) and a water discharge component (7); the bottom of the aeration box (1) is fixedly connected to a sand discharge component (5); the outer surface of the aeration box (1) is fixedly connected to an aeration component (8); the interior of the aeration box (1) is fixedly connected to a first guide plate (9) and a second guide plate (10); the first slag discharge component (3) is used to preliminarily filter sewage in the water inlet pipe (2) and discharge screen residue; the sand pushing component (4) is used to push sand and gravel that have settled in the sewage to move; the sand discharge component (5) is used to discharge sand and gravel; the second slag discharge component (6) is used to discharge scum; the aeration component (8) is used to aerate the sewage in the aeration box (1); the first guide plate (9) and the second guide plate (10) are used to guide the flow direction of the sewage.

2. A grid aeration and sand settling pretreatment combined device according to claim 1, characterized in that: The first slag discharge component (3) comprises a perforated grille (301), the perforated grille (301) is fixedly installed inside the aeration box (1), a connecting slot (302) is provided inside the aeration box (1), the connecting slot (302) is located below the perforated grille (301), a first slag discharge pipe (303) is fixedly connected to the outer surface of the perforated grille (301), a first motor (304) is fixedly connected to the end of the first slag discharge pipe (303), and a slag discharge spiral (305) is fixedly connected to the output shaft of the first motor (304).

3. A grid aeration and sand settling pretreatment combined device according to claim 1, characterized in that: The sand pushing assembly (4) comprises a sand pushing motor (401), the sand pushing motor (401) is fixedly mounted on the outer surface of the aeration box (1), a sand pushing screw (402) is fixedly connected to the output shaft of the sand pushing motor (401), and the sand pushing screw (402) is rotatably connected to the interior of the aeration box (1).

4. A grid aeration and sand settling pretreatment combined device according to claim 3, characterized in that: The sand discharge component (5) comprises a connecting pipe (501), wherein the connecting pipe (501) is fixedly connected to the bottom of the aeration box (1), the end of the connecting pipe (501) is fixedly connected to a sand discharge pipe (502), the end of the sand discharge pipe (502) is fixedly connected to a sand discharge motor (503), the output shaft of the sand discharge motor (503) is fixedly connected to a sand discharge screw (504), the sand discharge screw (504) is rotatably connected to the inside of the sand discharge pipe (502), and the connecting pipe (501) provides a moving path for sand and gravel to reach the sand discharge screw (504) from the sand pushing screw (402).

5. The grid aeration and sand settling pretreatment combined device according to claim 1, characterized in that: The second slag discharge component (6) comprises a second motor (601), the second motor (601) is fixedly mounted on the outside of the aeration box (1), the output shaft of the second motor (601) is drivingly connected to a rotating shaft (602), the outer surface of the rotating shaft (602) is fixedly connected to a slag scraper (603), the side of the slag scraper (603) is provided with a slag discharge weir (604), the slag discharge weir (604) is fixedly connected to the inside of the aeration box (1), the inside of the slag discharge weir (604) is fixedly connected to a second slag discharge pipe (605), and the end of the second slag discharge pipe (605) extends to the outside of the aeration box (1).

6. A grid aeration and sand settling pretreatment combined device according to claim 1, characterized in that: The water outlet assembly (7) comprises a water outlet weir (701), wherein the water outlet weir (701) is fixedly connected to the interior of the aeration box (1), and a water outlet pipe (702) is fixedly connected to the interior of the water outlet weir (701), and an end of the water outlet pipe (702) extends to the outside of the aeration box (1).

7. The grid aeration and sand settling pretreatment combined device according to claim 1, characterized in that: The aeration assembly (8) comprises an aeration pipe (801), one end of which extends into the interior of the aeration box (1), the other end of which is fixedly connected to a flange (802), and the outer surface of the aeration pipe (801) is fixedly connected to a connecting ear (803), and the connecting ear (803) is fixedly connected to the outer surface of the aeration box (1).

8. The grid aeration and sand settling pretreatment combined device according to claim 1, characterized in that: The bottom of the aeration box (1) is fixedly connected with a support leg (11).

Images