A water surface debris salvaging device for sewage treatment

Abstract

This invention provides a device for retrieving debris from the surface of wastewater in wastewater treatment plants. The device includes a housing. By designing an open structure at the bottom of the housing and installing two sets of sealing plates, which can rotate in opposite directions under the drive of four motors, the bottom of the housing is kept open. By immersing the bottom of the housing in water, debris is trapped inside. The sealing plates are then rotated back to their original positions by the motors, thus retaining the debris inside the housing. This device is suitable for retrieving large debris from the water surface. The motor is equipped with a first waterproof cover, and the first and second gears are also equipped with second waterproof covers, providing protection for the motor, the first gear, and the second gear. This ensures that the motor will not be infiltrated by water and that the first and second gears will not be jammed by debris. Compared to similar devices, this device is more practical and more stable.

Description

Technical Field

[0001] This utility model belongs to the field of sewage treatment technology, and in particular relates to a device for removing debris from the surface of sewage treatment water. Background Technology

[0002] Wastewater treatment refers to the process of purifying industrial wastewater and domestic sewage through physical, chemical, or biological methods to meet discharge or reuse standards. Its core objective is to remove pollutants (such as suspended solids, organic matter, nitrogen and phosphorus nutrients) to protect water resources, maintain ecological balance, and safeguard human health. Based on the treatment level, it can be divided into three levels. Primary treatment mainly uses physical methods such as sedimentation and filtration to remove suspended solids, with a removal rate of approximately 30%. Secondary treatment uses biological technologies such as activated sludge and biofilm processes to degrade organic matter, achieving a removal rate of over 90%. Tertiary treatment further removes recalcitrant pollutants and eutrophic substances through membrane separation, advanced oxidation, or chemical precipitation. Wastewater treatment technologies are widely used in urban, industrial, and rural areas. For example, urban wastewater treatment plants commonly use the activated sludge process, industrial wastewater treatment requires the combination of chemical precipitation or adsorption, while rural areas often use decentralized treatment methods such as anaerobic biogas digesters. During wastewater treatment, it is necessary to remove floating debris from the water surface.

[0003] The existing authorized public account CN211340725U discloses a device for removing scum from the surface of wastewater treatment water. The device includes a scooping device comprising a rotating drum with coaxial rotating shafts at both ends. A first pulley is located at the end of one of the rotating shafts. The rotating drum has several scooping claws arranged at equal intervals around its circumference, each claw having a perforated filter hole. A holding device is located on one side of the scooping device, comprising a square fixing ring with a net attached. Two parallel fixing rods are located at one end of the square fixing ring. This invention solves the technical problem mentioned in the background of this invention by having one-third of the scooping device submerged below the water surface and the ends of the scooping claws bent in the direction of rotation. As the rotating drum rotates, the scooping claws remove scum from the water surface and place it into the net, thus solving the technical problem mentioned in the background of this invention. However, the aforementioned wastewater treatment surface scum removal device involves inserting the entire device at an angle into the water, placing the container at the bottom of the debris before removal. Afterward, the device is lifted out of the water. This method is difficult to apply to larger debris, making it hard to move them into the container. Furthermore, the device's connecting rod is long, resulting in a high torque. When the debris inside the container is too heavy, it is difficult to lift, leading to unstable swaying. This places high demands on the overall structural robustness of the device. Additionally, the motor installed on the device needs to be submerged in water during removal, and the lack of a protective device makes it susceptible to water ingress and damage. Therefore, it is necessary to provide a wastewater treatment surface debris removal device to solve these problems. Utility Model Content

[0004] The technical content of this utility model is to provide a device for removing debris from the surface of wastewater treatment water.

[0005] To address the aforementioned problems, this utility model provides a wastewater treatment surface debris retrieval device, comprising a housing, a fixing plate mounted on the top of the housing, fixing holes at the four corners of the fixing plate, two sets of sealing plates symmetrically mounted on the inner bottom of the housing, drainage holes on the sealing plates, connecting shafts mounted at both ends of the sealing plates, a first gear mounted on the side of the connecting shaft, a second gear mounted on the top of the first gear, a motor connected to the side of the second gear, a first waterproof cover mounted on the outside of the motor, and a second waterproof cover mounted on the outside of the first and second gears, a push plate mounted on the top inside the housing, sliding rods mounted at the four corners of the push plate, and two sets of hydraulic rods symmetrically mounted on the top of the push plate.

[0006] As a further solution of this utility model, the box body is configured with a bottom opening structure, the cross-sectional area of ​​the fixing plate is larger than the cross-sectional area of ​​the box body, and the fixing hole can be used to fix the fixing plate to the crane sling on the ship.

[0007] As a further solution of this utility model, the overall dimensions of the two sets of sealing plates are adapted to the inner bottom dimensions of the box, and the connecting shaft is installed in the corresponding through holes opened on both sides of the box, forming a rotatable connection between the sealing plates and the box.

[0008] As a further solution of this utility model, the first gear is installed on the front and back of the outer side of the housing. Two sets of first gears are installed on both sides of a set of sealing plates. The first gear is installed on the outer side of the housing. The second gear meshes with the first gear. The motor is installed on the inner side of the housing. The rotating shaft of the motor passes through the through hole opened on the housing and is connected to the second gear. Four sets of motors are symmetrically fixedly installed on the inner side of the housing. Two sets of motors are corresponding to one set of sealing plates. The four sets of motors are synchronously controlled by a controller, so that the two sets of first gears at both ends of one set of sealing plates can rotate synchronously.

[0009] As a further solution of this utility model, the internal dimensions of the first waterproof cover are adapted to the dimensions of the motor. The first waterproof cover is fixedly installed on both sides of the inside of the housing by fixing bolts, and the second waterproof cover is fixedly installed on both sides of the housing by fixing bolts. The second waterproof cover can prevent the first gear and the second gear from getting stuck due to debris in the water.

[0010] As a further solution of this utility model, the size of the push plate is the same as the internal dimensions of the box, the top of the slide rod is fixedly connected to the top of the inner side of the box, the bottom of the slide rod is fixedly connected to both sides of the bottom of the inner side of the box, and the slide rod is set in the through holes opened at the four corners of the push plate, thereby ensuring the stability of the push plate through the slide rod.

[0011] As a further solution of this utility model, the hydraulic rod is fixedly installed on the top of the fixed plate, and the bottom telescopic end of the hydraulic rod passes through the through hole opened on the top of the fixed plate and the box and is fixedly connected to the top of the push plate. The two sets of hydraulic rods are synchronously controlled by a controller, so as to drive the push plate to move up and down inside the box.

[0012] Compared with related technologies, the wastewater treatment surface debris removal device provided by this utility model has the following beneficial effects:

[0013] 1. This utility model features an open structure at the bottom of the housing with two sets of sealing plates. These two sets of sealing plates can rotate in opposite directions under the drive of four motors, thus keeping the bottom of the housing open. By immersing the bottom of the housing in water, debris in the water can be trapped inside the housing. Then, by driving the sealing plates to rotate and reset, the debris can be retained inside the housing. This is suitable for retrieving large debris from the water surface. The motor of this device is equipped with a first waterproof cover, and the first and second gears are also equipped with second waterproof covers, thus providing protection for the motor, the first gear, and the second gear, ensuring that the motor will not be flooded and that the first and second gears will not be jammed by debris. Compared with the comparative cases, this device is more practical and more stable.

[0014] 2. This utility model features a push plate installed at the top inside the box, with sliding rods at its four corners to ensure stability. Two sets of hydraulic rods are installed on the top of the push plate, fixedly mounted on a fixed plate. The bottom telescopic ends of the hydraulic rods pass through through holes in the fixed plate and the top of the box, and are fixedly connected to the top of the push plate. The two sets of hydraulic rods are synchronously controlled by a controller, which drives the push plate to move up and down inside the box. During unloading operations, when debris inside the box is difficult to fall, the hydraulic rods can drive the push plate to descend and push the debris out of the box, reducing manual labor. Attached Figure Description

[0015] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a top-view three-dimensional structural diagram of a wastewater treatment surface debris retrieval device according to the present invention;

[0017] Figure 2 This is a bottom-view three-dimensional structural diagram of a wastewater treatment surface debris retrieval device according to the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of the housing of a wastewater treatment surface debris retrieval device according to the present invention;

[0019] Figure 4 This is a cross-sectional structural diagram of the casing of a wastewater treatment surface debris retrieval device according to the present invention;

[0020] Figure 5 This is a side view of the sealing plate structure of a wastewater treatment surface debris retrieval device according to the present invention;

[0021] Figure 6 This is a schematic diagram showing the detailed structure of the sealing plate of a wastewater treatment surface debris retrieval device according to the present invention.

[0022] In the diagram: 1. Housing; 2. Fixing plate; 3. Fixing hole; 4. Sealing plate; 5. Drain hole; 6. Connecting shaft; 7. First gear; 8. Second gear; 9. Motor; 10. First waterproof cover; 11. Second waterproof cover; 12. Push plate; 13. Slide rod; 14. Hydraulic rod. Detailed Implementation

[0023] Please refer to the following: Figure 1-6 A device for removing surface debris from wastewater treatment plants includes a housing 1. A fixing plate 2 is installed on the top of the housing 1. Fixing holes 3 are provided at the four corners of the fixing plate 2. Two sets of sealing plates 4 are symmetrically installed on the inner bottom of the housing 1. Drainage holes 5 are opened on the sealing plates 4. Connecting shafts 6 are installed at both ends of the sealing plates 4. A first gear 7 is installed on the side of the connecting shaft 6. A second gear 8 is installed on the top of the first gear 7. A motor 9 is connected to the side of the second gear 8. A first waterproof cover 10 is installed on the outside of the motor 9. A second waterproof cover 11 is installed on the outside of the first gear 7 and the second gear 8. A push plate 12 is installed on the top inside the housing 1. Sliding rods 13 are installed at the four corners of the push plate 12. Two sets of hydraulic rods 14 are symmetrically installed on the top of the push plate 12.

[0024] Preferably, the box body 1 is configured with a bottom opening structure, the cross-sectional area of ​​the fixing plate 2 is larger than the cross-sectional area of ​​the box body 1, and the fixing hole 3 can be used to fix the fixing plate 2 to the crane sling on the ship, thereby installing the box body 1 onto the ship;

[0025] Preferably, the overall dimensions of the two sets of sealing plates 4 are adapted to the inner bottom dimensions of the box body 1, and the connecting shaft 6 is installed in the through holes opened on both sides of the box body 1 to match them, so that the sealing plates 4 and the box body 1 form a rotating connection.

[0026] Preferably, the first gear 7 is installed on the outer front and back of the box 1. Two sets of first gears 7 are installed on both sides of a set of sealing plates 4. The first gear 7 is installed on the outer side of the box 1. The second gear 8 meshes with the first gear 7. The motor 9 is installed on the inner side of the box 1. The rotating shaft of the motor 9 passes through the through hole opened on the box 1 and is connected to the second gear 8. The motor 9 can drive the second gear 8 to rotate, thereby driving the first gear 7 to rotate. Four sets of motors 9 are symmetrically fixedly installed on the inner side of the box 1. One set of sealing plates 4 corresponds to two sets of motors 9. The four sets of motors 9 are synchronously controlled by a controller, so that the two sets of first gears 7 at both ends of one set of sealing plates 4 can rotate synchronously, thereby controlling the sealing plates 4 to rotate at the bottom of the inner side of the box 1. The rotation directions of the two sets of sealing plates 4 are opposite, so that the bottom of the box 1 can be closed and opened through the two sets of sealing plates 4.

[0027] Preferably, the internal dimensions of the first waterproof cover 10 are adapted to the dimensions of the motor 9. The first waterproof cover 10 is fixedly installed on both sides of the inside of the housing 1 by fixing bolts, thereby providing good protection for the motor 9 and preventing water damage to the motor 9. The second waterproof cover 11 is fixedly installed on both sides of the housing 1 by fixing bolts. The second waterproof cover 11 can prevent the first gear 7 and the second gear 8 from getting stuck due to debris in the water, ensuring that the two gears mesh normally. The first gear 7 and the second gear 8 need to be inspected and maintained frequently during daily use to ensure normal operation.

[0028] Preferably, the dimensions of the push plate 12 are the same as the internal dimensions of the box 1 (length and width). The top of the slide rod 13 is fixedly connected to the top of the inner side of the box 1, and the bottom of the slide rod 13 is fixedly connected to both sides of the bottom of the inner side of the box 1. The slide rod 13 is set in the through holes opened at the four corners of the push plate 12, thereby ensuring the stability of the push plate 12 through the slide rod 13.

[0029] Preferably, the hydraulic rod 14 is fixedly installed on the top of the fixed plate 2. The bottom telescopic end of the hydraulic rod 14 passes through the through hole opened in the top of the fixed plate 2 and the box 1 and is fixedly connected to the top of the push plate 12. The two sets of hydraulic rods 14 are synchronously controlled by a controller, so that the push plate 12 can be driven to move up and down inside the box 1. When retrieving debris from the water, the two sets of sealing plates 4 are rotated to a vertical downward position, and then the box 1 is submerged in water, so that the debris in the water is inside the box 1. It should be noted that the fixed plate 2 is not submerged in water. Then, the sealing plate 4 is driven upward to reset by the motor 9, so that the sealing plate 4. By sealing the bottom of the box 1, the debris in the water can be trapped inside the box 1. Then, the box 1 is lifted upwards by the crane sling. At this time, the water inside the box 1 will be discharged through the drain hole 5 on the sealing plate 4, so that there is no large amount of water inside the box 1. When it is necessary to unload the debris from the inside of the box 1, the sealing plate 4 is rotated by the motor 9 to open the bottom of the box 1, so that the debris falls from the inside of the box 1 under the action of gravity. When the debris inside the box 1 is difficult to fall, the push plate 12 is driven by the hydraulic rod 14 to push the debris downwards from the inside of the box 1, reducing the amount of manual operation.

[0030] The standard parts used in this embodiment can be purchased directly from the market, and can also be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments, or they can be used directly or indirectly, without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, and they are similarly included within the patent protection scope of the present invention.

Claims

1. A water surface debris salvaging device for sewage treatment, comprising a box body (1), a fixed plate (2) is installed on the top of the box body (1), characterized in that: Fixing holes (3) are provided at the four corners of the fixing plate (2). Two sets of sealing plates (4) are symmetrically installed on the inner bottom of the box (1). Drainage holes (5) are provided on the sealing plates (4). Connecting shafts (6) are installed at both ends of the sealing plates (4). A first gear (7) is installed on the side of the connecting shaft (6). A second gear (8) is installed on the top of the first gear (7). A motor (9) is connected to the side of the second gear (8). A first waterproof cover (10) is installed on the outside of the motor (9). A second waterproof cover (11) is installed on the outside of the first gear (7) and the second gear (8). A push plate (12) is installed on the top inside the box (1). Slide rods (13) are installed at the four corners of the push plate (12). Two sets of hydraulic rods (14) are symmetrically installed on the top of the push plate (12).

2. The water surface debris salvaging device for sewage treatment according to claim 1, characterized in that: The box (1) is configured with a bottom opening structure, and the cross-sectional area of ​​the fixing plate (2) is greater than the cross-sectional area of ​​the box (1).

3. The water surface debris salvaging device for sewage treatment according to claim 1, characterized in that: The overall dimensions of the two sets of sealing plates (4) are adapted to the inner bottom dimensions of the box body (1). The connecting shaft (6) is installed in the through holes on both sides of the box body (1) that are adapted to it. The sealing plates (4) and the box body (1) form a rotating connection.

4. The water surface debris salvaging device for sewage treatment according to claim 1, characterized in that: The first gear (7) is installed on the front and back of the outer side of the housing (1). Two sets of first gears (7) are installed on both sides of a set of sealing plates (4). The first gear (7) is installed on the outer side of the housing (1). The second gear (8) meshes with the first gear (7). The motor (9) is installed on the inner side of the housing (1). The shaft of the motor (9) passes through the through hole opened on the housing (1) and is connected to the second gear (8). Four sets of motors (9) are symmetrically fixedly installed on the inner side of the housing (1). One set of sealing plates (4) corresponds to two sets of motors (9). The four sets of motors (9) are synchronously controlled by a set of controllers.

5. A wastewater treatment surface debris retrieval device according to claim 1, characterized in that: The internal dimensions of the first waterproof cover (10) are adapted to the dimensions of the motor (9). The first waterproof cover (10) is fixedly installed on both sides of the inside of the housing (1) by fixing bolts. The second waterproof cover (11) is fixedly installed on both sides of the housing (1) by fixing bolts.

6. The wastewater treatment surface debris removal device according to claim 1, characterized in that: The dimensions of the push plate (12) are the same as the internal dimensions of the box (1). The top of the slide rod (13) is fixedly connected to the top of the inner side of the box (1), and the bottom of the slide rod (13) is fixedly connected to both sides of the bottom of the inner side of the box (1). The slide rod (13) is set in the through holes opened at the four corners of the push plate (12).

7. The wastewater treatment surface debris removal device according to claim 1, characterized in that: The hydraulic rod (14) is fixedly installed on the top of the fixed plate (2). The bottom telescopic end of the hydraulic rod (14) passes through the through hole opened on the top of the fixed plate (2) and the box (1) and is fixedly connected to the top of the push plate (12). The two sets of hydraulic rods (14) are synchronously controlled by a set of controllers.

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