Sludge filtering and dewatering system

Abstract

The sludge filtering and dewatering system comprises a flocculation basin, a conveying pipeline and a dewatering mechanism, a stirring impeller is arranged in the flocculation basin, a stirring motor is arranged at the top of the flocculation basin, the stirring motor is connected with the stirring impeller, and a drain outlet is formed in the bottom of the flocculation basin; according to the system, solid-liquid layering in sewage is realized through a flocculation basin, a stirring motor, a stirring impeller and dosing, then water-containing sludge is conveyed to a centrifugal roller through a sewage draining exit and a conveying pipeline, and the sludge is driven to perform centrifugal motion through rotation of the centrifugal roller, so that centrifugal dewatering of the sludge is realized, and filtering dewatering of the sludge is realized; the whole structure is practical and suitable for filtering and dewatering a large amount of sludge.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, in particular to a sludge filtering and dewatering system. Background Art

[0002] Sludge is a solid sediment produced during the tap water production process. In the field of water treatment, sewage often contains a large amount of sludge. When filtering water, it is necessary to filter out the sludge in the water. However, most existing sludge treatment devices have poor dewatering effects and cannot meet user needs. A small number of treatment devices, while having some dewatering effect, are unable to process sludge in large quantities. Publication No. CN206666358U relates to a sludge dewatering machine comprising a frame, a first motor disposed on one side of the frame, the output end of the first motor connected to a differential via a transmission mechanism, a pusher shaft connected to the differential at one end and extending into a housing through a first bearing seat, a plurality of pusher blades arranged at intervals on the pusher shaft, a passive shaft extending through each pusher blade and connected to the pusher blades at the front and rear ends of the pusher shaft, and spiral blades disposed on the passive shaft, the number of spiral blades increasing from the pusher blades at the front to the rear of the pusher shaft. This dewatering machine is unable to dewater sludge in large quantities. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the object of the present invention is to provide a practical sludge filtration and dewatering system.

[0004] To achieve the above object, the present invention provides a solution as follows: a sludge filtration and dewatering system, comprising a flocculation tank, a conveying pipeline, and a dewatering mechanism, wherein a stirring impeller is provided in the flocculation tank, a stirring motor is provided on the top of the flocculation tank, the stirring motor is connected to the stirring impeller, and a sewage outlet is provided at the bottom of the flocculation tank;

[0005] The conveying pipeline is arranged upwardly and tilted, and is respectively provided with a first feed port and a first discharge port, the sewage outlet is connected to the first feed port, and a conveying screw is provided in the conveying pipeline, and the conveying screw is used to convey the sludge to the first discharge port;

[0006] The dehydration mechanism includes a base frame and a centrifugal drum. The centrifugal drum is rotatably connected to the base frame. The outer wall of the centrifugal drum is provided with multiple drainage holes. The centrifugal drum is arranged to be tilted downward. The centrifugal drum is provided with a second feed port and a second discharge port. The first discharge port is connected to the second feed port. The inner wall of the centrifugal drum is formed with two rows of guide plates.

[0007] The beneficial effects of the present invention are: separation of sludge and dehydration of sludge. The system first uses a flocculation tank, cooperates with a stirring motor, a stirring impeller, and adds chemicals to achieve solid-liquid stratification in sewage, and then transports the water-containing sludge to the centrifugal drum through the sewage outlet and the conveying pipe. The centrifugal drum is then rotated to drive the sludge to perform centrifugal motion to achieve centrifugal dehydration of the sludge, thereby achieving filtration and dehydration of the sludge. The overall structure is practical and suitable for large-scale sludge filtration and dehydration treatment. At the same time, two rows of guide plates are provided to improve the centrifugal dehydration effect of the sludge.

[0008] Furthermore, the flocculation tank is provided with a first partition plate and a second partition plate, respectively. The first partition plate and the second partition plate are arranged vertically and serve together to separate the flocculation tank into a first overflow tank and a second overflow tank. A first overflow port is provided on the lower half of the first partition plate, and the first overflow tank is connected to the flocculation tank through the first overflow port. The present invention adopts this structure to achieve the output of stratified liquid.

[0009] Furthermore, an overflow hole is opened on the side wall of the first overflow pool.

[0010] Furthermore, a second overflow port is opened on the top of the second partition plate, the first overflow tank and the second overflow tank are connected through the second overflow port, and the second overflow tank is connected to an overflow pipe.

[0011] Furthermore, a sewage pipe is connected between the sewage outlet and the first feed inlet, and a suction pump is provided on the sewage pipe. After adopting the above structure, the present invention can realize the suction of sludge at the bottom of the flocculation tank.

[0012] Furthermore, a servo motor is provided on the conveying pipe, and the servo motor is connected to the conveying screw. After the present invention adopts the above structure, the conveying screw is driven to rotate to convey the sludge.

[0013] Furthermore, a plurality of rollers are rotatably connected to the base frame, and the plurality of rollers roll together to support the centrifugal drum.

[0014] Furthermore, two transmission gears are rotatably connected to the base frame, a rack portion is formed on the outer wall of the centrifugal drum, the rack portion is annularly distributed, and the two transmission gears respectively mesh with the rack portion. A drive motor is provided on the base frame, the drive motor is connected to a drive reduction box, and the drive reduction box is connected to a driving gear, and the driving gear meshes with one of the transmission gears. After adopting the above structure, the present invention realizes the rotation of the centrifugal drum.

[0015] Furthermore, the guide plates in the same row are sequentially spaced along the length of the centrifugal drum, and the two rows of guide plates together form a spiral structure, wherein the guide plates are arranged at an angle. After the present invention adopts the above structure, a vortex can be formed in the centrifugal drum, thereby improving the centrifugal dehydration effect.

[0016] Furthermore, a water collecting tank is provided on the base frame, and the water collecting tank is located directly below the centrifugal drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structural diagram of the present invention.

[0018] Figure 2 This is a diagram showing the internal structure of the centrifugal drum of the present invention.

[0019] Among them, 1 is a flocculation tank, 11 is a stirring impeller, 12 is a stirring motor, 13 is a sewage outlet, 14 is a first partition plate, 141 is a first overflow port, 15 is a second partition plate, 152 is a second overflow port, 16 is a first overflow tank, 161 is a first overflow port, 17 is a second overflow tank, 171 is a second overflow port, 172 is an overflow pipe, 21 is a conveying pipeline, 211 is a first feed port, and 212 is a first discharge port. , 22 is a conveying screw, 23 is a servo motor, 24 is a drain port, 25 is a water trough, 31 is a base frame, 311 is a roller, 312 is a transmission gear, 32 is a centrifugal drum, 321 is a second feed port, 322 is a second discharge port, 323 is a drain hole, 324 is a guide plate, 325 is a gear part, 33 is a drive motor, 331 is a driving gear, 34 is a water trough, 41 is a sewage pipe, and 42 is a suction pump. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] See attached Figure 1 To the attached Figure 2 As shown, a sludge filtration and dewatering system includes a flocculation tank 1, a conveying pipeline 21, and a dewatering mechanism. A stirring impeller 11 is provided in the flocculation tank 1, a stirring motor 12 is provided on the top of the flocculation tank 1, the stirring motor 12 is connected to the stirring impeller 11, and a sewage outlet 13 is provided at the bottom of the flocculation tank 1; a first partition plate 14 and a second partition plate 15 are respectively provided in the flocculation tank 1, the first partition plate 14 and the second partition plate 15 are vertically arranged, and the first partition plate 14 and the second partition plate 15 are jointly used to separate the flocculation tank 1 into a first overflow tank 16 and a second overflow tank 17, and a first overflow port 141 is provided on the lower half of the first partition plate 14, and the first overflow tank 16 is connected to the flocculation tank 1 through the first overflow port 141.

[0023] In this embodiment, an overflow hole 161 is opened on the side wall of the first overflow tank 16; a second overflow port 151 is opened on the top of the second partition plate 15, and the first overflow tank 16 and the second overflow tank 17 are connected through the second overflow port 151, and the second overflow tank 17 is connected to the overflow pipe 171.

[0024] In this embodiment, a sewage pipe 41 is connected between the sewage outlet 13 and the first feed inlet 211 , and a suction pump 42 is provided on the sewage pipe 41 .

[0025] The conveying pipe 21 is arranged to be inclined upward, and the conveying pipe 21 is respectively provided with a first feed port 211 and a first discharge port 212. The sewage outlet 13 is connected to the first feed port 211. A conveying screw 22 is arranged in the conveying pipe 21, and the conveying screw 22 is used to convey the sludge to the first discharge port 212; a servo motor 23 is arranged on the conveying pipe 21, and the servo motor 23 is connected to the conveying screw 22.

[0026] In this embodiment, a plurality of drainage ports 24 are formed at the bottom of the delivery pipe 21 , and a water storage tank 25 is provided directly below the plurality of drainage ports 24 .

[0027] The dehydration mechanism includes a base frame 31 and a centrifugal drum 32. The centrifugal drum 32 is rotatably connected to the base frame 31. A plurality of drainage holes 323 are provided on the outer wall of the centrifugal drum 32. The centrifugal drum 32 is tilted downward. The centrifugal drum 32 is provided with a second feed port 321 and a second discharge port 322. The first discharge port 212 is connected to the second feed port 321. Two rows of guide plates 324 are formed on the inner wall of the centrifugal drum 32.

[0028] In this embodiment, a plurality of rollers 311 are rotatably connected to the base frame 31, and the plurality of rollers 311 jointly roll and support the centrifugal drum 32; two transmission gears 312 are rotatably connected to the base frame 31, and a rack portion 325 is formed on the outer wall of the centrifugal drum 32, and the rack portions 325 are distributed in a ring. The two transmission gears 312 respectively engage with the rack portions 325, and a drive motor 33 is provided on it. The drive motor 33 is connected to a drive reduction box, and the drive reduction box is connected to a driving gear 331, and the driving gear 331 engages with one of the transmission gears 312.

[0029] In this embodiment, a plurality of guide plates 324 in the same row are sequentially spaced apart along the length direction of the centrifugal drum 32 , and the two rows of guide plates 324 together form a spiral structure, wherein the guide plates 324 are arranged at an angle.

[0030] In this embodiment, a water collecting tank 34 is provided on the base frame 31 , and the water collecting tank 34 is located directly below the centrifugal drum 32 .

[0031] In this embodiment, the specific filtration and dehydration process is as follows: first, the sewage with sludge is transported to the flocculation tank 1, then the corresponding reagent is added to the flocculation tank 1, and then the stirring motor 12 is started. The stirring motor 12 drives the stirring impeller 11 to rotate to fully stir the reagent so that the reagent and the sewage are fully mixed. After stirring to a set degree, the stirring motor 12 is stopped and left to stand;

[0032] The sludge is allowed to stand until solid-liquid separation occurs and sludge is formed at the bottom of the flocculation tank 1. The suction pump 42 is then started to suck the sludge from the bottom of the flocculation tank 1. The sludge is transported to the first feed port 211 of the water delivery pipe 21 through the sewage outlet 13 and the sewage pipe 41. The servo motor 23 is then started to drive the conveying screw 22, so that the conveying screw 22 drives the sludge to climb upward along the delivery pipe 21 until it is transported to the first discharge port 212. During the upward climbing process of the sludge in the delivery pipe 21, some water in the sludge is discharged through multiple drainage ports 24 and collected in the water trough 25.

[0033] The sludge is transported to the centrifugal drum 32 through the first discharge port 212 and the second feed port 321, and then the drive motor 33 is started. The drive motor 33 drives the drive reduction gearbox to work, and the drive reduction gearbox drives the driving gear 331 to rotate, and the driving gear 331 drives the transmission gear 312 to rotate. The transmission gear 312 drives the centrifugal drum 32 to rotate through the rack portion 325. Among them, the spiral structure formed by the two rows of guide plates 324 is used to make the sludge perform centrifugal motion in the centrifugal drum 32 and form a vortex, thereby effectively separating the water in the sludge. The dehydrated sludge is automatically discharged through the second discharge port 322; wherein, the water separated in the centrifugal drum 32 is discharged through multiple drainage holes 323 and collected by the water collecting tank 34.

[0034] Among them, the liquid after stratification in the flocculation tank 1 is transported to the first overflow tank 16 through the first overflow port 141, and is transported to the second overflow tank 17 through the second overflow port 151. Then, according to actual conditions, the water in the first overflow tank 16 can be discharged through the overflow port 161, and the water in the second overflow tank 17 can be discharged through the overflow pipe 171. In this way, the stratified water can be discharged and the sewage containing sludge can continue to be input into the flocculation tank.

[0035] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any person skilled in the art can, without departing from the scope of the present invention, utilize the technical content disclosed above to make further possible variations and modifications to the present invention, or modify the present invention into equivalent embodiments with equivalent variations. Therefore, any equivalent variations made in accordance with the principles of the present invention without departing from the content of the present invention's technical solution should be included within the scope of protection of the present invention.

Claims

1. A sludge filtration and dehydration system, comprising a flocculation tank (1), a conveying pipeline (21), and a dehydration mechanism, characterized in that: A stirring impeller (11) is arranged in the flocculation tank (1), a stirring motor (12) is arranged on the top of the flocculation tank (1), the stirring motor (12) is connected to the stirring impeller (11), and a sewage outlet (13) is opened at the bottom of the flocculation tank (1); The conveying pipeline (21) is arranged obliquely upward, and the conveying pipeline (21) is respectively provided with a first feed port (211) and a first discharge port (212), the sewage outlet (13) is connected to the first feed port (211), and a conveying screw (22) is arranged in the conveying pipeline (21), and the conveying screw (22) is used to convey the sludge to the first discharge port (212); The dehydration mechanism comprises a base frame (31) and a centrifugal drum (32); the centrifugal drum (32) is rotatably connected to the base frame (31); a plurality of drainage holes (323) are formed on the outer wall of the centrifugal drum (32); the centrifugal drum (32) is arranged to be inclined downward; a second feed port (321) and a second discharge port (322) are formed on the centrifugal drum (32); the first discharge port (212) is connected to the second feed port (321); and two rows of guide plates (324) are formed on the inner wall of the centrifugal drum (32).

2. A sludge filtration and dewatering system according to claim 1, characterized in that: A first partition plate (14) and a second partition plate (15) are respectively arranged in the flocculation tank (1); the first partition plate (14) and the second partition plate (15) are arranged vertically; the first partition plate (14) and the second partition plate (15) are used together to separate the flocculation tank (1) into a first overflow tank (16) and a second overflow tank (17); a first overflow port (141) is provided on the lower half of the first partition plate (14); and the first overflow tank (16) is connected to the flocculation tank (1) through the first overflow port (141).

3. A sludge filtration and dewatering system according to claim 2, characterized in that: An overflow hole (161) is opened on the side wall of the first overflow pool (16).

4. A sludge filtration and dewatering system according to claim 3, characterized in that: A second overflow port (151) is formed at the top of the second partition plate (15); the first overflow pool (16) and the second overflow pool (17) are connected via the second overflow port (151); and the second overflow pool (17) is connected to an overflow pipe (171).

5. A sludge filtration and dewatering system according to claim 1, characterized in that: A sewage discharge pipe (41) is connected between the sewage discharge port (13) and the first feed port (211), and a suction pump (42) is provided on the sewage discharge pipe (41).

6. A sludge filtration and dewatering system according to claim 1, characterized in that: A servo motor (23) is provided on the conveying pipeline (21), and the servo motor (23) is connected to the conveying screw rod (22).

7. A sludge filtration and dewatering system according to claim 1, characterized in that: The bottom frame (31) is rotatably connected to a plurality of rollers (311), and the plurality of rollers (311) jointly roll and support the centrifugal drum (32).

8. A sludge filtration and dewatering system according to claim 7, characterized in that: Two transmission gears (312) are rotatably connected to the base frame (31), a rack portion (325) is formed on the outer wall of the centrifugal drum (32), the rack portion (325) is annularly distributed, the two transmission gears (312) are respectively meshed with the rack portions (325), a driving motor (33) is arranged on the base frame (31), the driving motor (33) is connected to a driving reduction box, the driving reduction box is connected to a driving gear (331), and the driving gear (331) is meshed with one of the transmission gears (312).

9. A sludge filtration and dewatering system according to claim 1, characterized in that: A plurality of guide plates (324) in the same row are arranged in sequence and spaced apart along the length direction of the centrifugal drum (32), and two rows of guide plates (324) together form a spiral structure, wherein the guide plates (324) are arranged obliquely.

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