A stirring device for a sewage tank

Abstract

The utility model discloses a kind of stirring devices for sewage pool, including pool body, stirring mechanism, driving mechanism, mud scraping mechanism, stirring mechanism includes first screw rod, first limit rod, first sliding block, stirring rod, first stirring vane, second stirring vane, third stirring vane, first screw rod one end passes through pool body side wall and its rotation is connected, other end rotation is connected in pool body side wall, first screw rod two ends thread direction is opposite, first limit rod is fixed in pool body, two first sliding blocks are respectively thread-connected in the two ends of first screw rod thread direction opposite, and with its thread connection, two first sliding blocks also respectively pass through first limit rod, and with its sliding connection, two first sliding blocks are respectively fixed with stirring motor, stirring rod is fixed in stirring motor, two groups of first stirring vane, two groups of second stirring vane, two groups of third stirring vane are evenly distributed along stirring rod height direction, the utility model is used to solve the technical problem of insufficient sewage stirring.

Description

Technical Field

[0001] This utility model belongs to the technical field of stirring devices, and particularly relates to a stirring device for sewage tanks. Background Technology

[0002] In the field of wastewater treatment, wastewater tanks are key facilities used to store and treat various types of wastewater. The wastewater in wastewater tanks has a complex composition, containing a large amount of suspended solids, organic matter, inorganic matter, and microorganisms. In order to fully mix the various components in the wastewater, promote the smooth progress of chemical reactions, biodegradation and other treatment processes, and improve the efficiency and quality of wastewater treatment, a stirring device is usually required in the wastewater tank.

[0003] Traditional sewage tank mixing devices mostly use a single mixing blade structure, such as common straight blades or spiral blades. When this mixing blade rotates, it mainly generates a strong mixing force in the local area where the mixing blade is located. However, the mixing force is obviously insufficient in the corners or edges of the sewage tank, which leads to insufficient mixing of sewage and affects the overall sewage treatment effect. Utility Model Content

[0004] To address the above problems, this utility model provides a stirring device for sewage tanks.

[0005] To achieve the above objectives, this utility model provides a stirring device for a sewage tank, comprising a hollow tank body with an open top, a stirring mechanism disposed within the tank body, a driving mechanism, and a sludge scraping mechanism disposed at the four corners of the tank body. A cover plate is hinged to the top of the tank body. The stirring mechanism includes a first screw rod disposed along the length of the tank body at the top of the tank body, a first limiting rod disposed parallel to the first screw rod, two first sliders, two stirring rods, two sets of first stirring blades, two sets of second stirring blades, and two sets of third stirring blades. One end of the first screw rod passes through and is rotatably connected to the side wall of the tank body, and the other end is rotatably connected to the side wall of the tank body. The threads at both ends of the first screw rod are in opposite directions. The first limiting rod is fixed to the side wall of the tank body at the first screw rod. On one side of a screw, two first sliders are threadedly connected to the two ends of the first screw with opposite thread directions and are threadedly connected to it. The two first sliders also pass through the first limiting rod and are slidably connected to it. The driving mechanism drives the first screw to rotate. A stirring motor is fixed on each of the two first sliders. The two stirring rods, two sets of first stirring blades, two sets of second stirring blades, and two sets of third stirring blades correspond to the two first sliders. The stirring rods are arranged along the height direction of the pool and fixed on the output shaft of the stirring motor. The two sets of first stirring blades, two sets of second stirring blades, and two sets of third stirring blades are evenly distributed along the height direction of the stirring rods. The sludge scraping mechanism is used to remove the adhering substances on the side wall of the pool.

[0006] Optionally, each group of the first stirring blades includes two straight rods, which are symmetrically fixed at the top of the stirring rod.

[0007] Optionally, each set of second stirring blades consists of double-layered spiral blades, fixed to the stirring rod below the first stirring blade, and the two layers of spiral blades are alternately twisted.

[0008] Optionally, the second stirring blade has a through hole.

[0009] Optionally, each group of third stirring blades consists of four straight stirring rods, which are evenly fixed at the bottom of the stirring rods, and the bottom surface of the rods abuts against the bottom surface of the tank.

[0010] Optionally, the driving mechanism includes a first motor fixed to the outer wall of the pool body, and the output shaft of the first motor is fixedly connected to one end of the first screw that passes through the pool body.

[0011] Optionally, the sludge scraping mechanism includes a sludge scraping assembly and a driving assembly. The sludge scraping assembly includes two second screws, two second limiting rods, four second sliders, and four scrapers. The two second screws are arranged along the height direction of the pool body and are rotatably connected to the pool body. The two second limiting rods are also arranged along the height direction of the pool body and are fixedly installed in the pool body. The four second sliders correspond to the two second screws and the two second limiting rods, and are respectively threaded to the second screws and slidably connected to the second limiting rods. The four scrapers are respectively fixed on the side of two adjacent second sliders near the side wall of the pool body and respectively abut against the side wall of the pool body. The driving assembly drives the two second screws to rotate.

[0012] Optionally, a crossbar is provided on the top wall of the pool body on the side away from the first screw rod. The crossbar is parallel to the first screw rod and its two ends are rotatably connected to the side wall of the pool body. The driving assembly includes a first spur gear fixed at the unthreaded position of the first screw rod, a second spur gear fixed on the crossbar and meshing with the first spur gear, a first bevel gear fixed on the crossbar near the two ends of the two second screw rods, and two second bevel gears. The two second bevel gears are fixed on the top ends of the two second screw rods and mesh with the two first bevel gears respectively.

[0013] The beneficial effects of this utility model are as follows: 1. This utility model employs a stirring mechanism that combines bidirectional movement and independent stirring. The first screw features reverse threads at both ends, driving two first sliders to move synchronously in opposite directions along the length of the tank. This, combined with the stirring motor driving the stirring rod to rotate independently, ensures that the stirring range covers the entire length of the tank, avoiding the "stirring dead zones" present in traditional fixed stirring. Simultaneously, the first limiting rod ensures smooth slider movement, guaranteeing a regular and controllable stirring trajectory, allowing for full contact between wastewater, chemicals, and activated sludge throughout the entire tank.

[0014] 2. This utility model adopts a first stirring blade, a second stirring blade, and a third stirring blade to achieve multi-layer blade enhanced three-dimensional mixing. The three sets of stirring blades, which are evenly distributed along the height of the stirring rod, form a longitudinal three-dimensional stirring structure, which can act on sewage layers at different depths in the pool at the same time, breaking the vertical stratification of sewage and facilitating improved mixing effect.

[0015] 3. This utility model adopts a sludge scraping mechanism to specifically remove the adhesive substances in the corners and edges that are difficult to reach by traditional stirring devices, thereby preventing sludge from accumulating and solidifying in the corners and solving the problem of dead corners in the pool from the source. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a partial cross-sectional view to show the mixing mechanism and the sludge scraping mechanism.

[0019] Figure 3 This is a schematic diagram to show part of the structure of the driving component.

[0020] Explanation of reference numerals in the attached figures 1. Tank body; 11. Cover plate; 2. Stirring mechanism; 21. First screw; 22. First limiting rod; 23. First slider; 24. Stirring rod; 25. First stirring blade; 26. Second stirring blade; 261. Through hole; 27. Third stirring blade; 28. Stirring motor; 3. Drive mechanism; 31. First motor; 4. Sludge scraping mechanism; 41. Sludge scraping assembly; 411. Second screw; 412. Second limiting rod; 413. Second slider; 414. Scraper; 42. Drive assembly; 421. First spur gear; 422. Second spur gear; 423. First bevel gear; 424. Second bevel gear; 425. Crossbar. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Reference Figure 1 and Figure 2A mixing device for a sewage tank includes a tank body 1, a mixing mechanism 2, a driving mechanism 3, and a sludge scraping mechanism 4. The tank body 1 is hollow inside with an opening at the top, and a cover plate 11 is hinged to the top surface of the tank body 1. The mixing mechanism 2 is located in the middle of the tank body 1 and is used to mix the sewage. The driving mechanism 3 is located at the top of the tank body 1 and is used to provide power to the mixing mechanism 2. The sludge scraping mechanism 4 is located at the four corners of the tank body 1 and is used to remove adhering substances from the side walls of the tank body 1 to facilitate mixing with the sewage and ensure thorough mixing.

[0023] Reference Figure 1-3 The stirring mechanism 2 includes a first screw 21, a first limiting rod 22, a first slider 23, a stirring rod 24, a first stirring blade 25, a second stirring blade 26, and a third stirring blade 27. The first screw 21 is located at the middle of the top of the tank body 1, extending along the length of the tank body 1. One end of the first screw 21 passes through and is rotatably connected to the side wall of the tank body 1, while the other end is rotatably connected to the side wall of the tank body 1. The threads at both ends of the first screw 21 are in opposite directions. The first limiting rod 22 is parallel to the first screw 21 and located on one side of the first screw 21. Both ends of the first limiting rod 22 are fixed to the side wall of the tank body 1. There are two first sliders 23, each threadedly connected to the opposite ends of the first screw 21. Both first sliders 23 also pass through and are slidably connected to the first limiting rod 22. A stirring motor 28 is fixed to the bottom surface of each of the two first sliders 23, with the output shaft of the stirring motor 28 facing the bottom surface of the tank body 1. There are two stirring rods 24, both of which are arranged along the height of the tank body 1, and the top ends of the two stirring rods 24 are respectively fixed to the output shafts of the two stirring motors 28. The drive mechanism 3 drives the first screw 21 to rotate.

[0024] Reference Figure 1-3There are two sets of first stirring blades 25, each corresponding to one of the two stirring rods 24, and positioned at the top of the stirring rods 24. Each set of first stirring blades 25 includes two straight rods, which are symmetrically fixed to the stirring rods 24. There are also two sets of second stirring blades 26, each corresponding to one of the two stirring rods 24, and positioned below the first stirring blades 25. Each set of second stirring blades 26 consists of double-layered helical blades, which are arranged along the height direction and fixed to the stirring rods 24, with the two layers of helical blades in each set alternately twisted. Multiple through holes 261 are evenly distributed on the second stirring blades 26, allowing wastewater to pass through the through holes 261 to form a jet, creating a velocity difference with the main fluid pushed by the second stirring blades 26, forming local turbulence and shearing action, which facilitates more uniform mixing. There are also two sets of third stirring blades 27, each corresponding to one of the two stirring rods 24, and positioned at the bottom of the stirring rods 24. Each group of third stirring blades 27 consists of four straight stirring rods 24. The four straight stirring rods 24 are evenly fixed on the bottom surface of the stirring rod 24 with the stirring rod 24 as the axis, and the bottom surface of the straight stirring rod 24 is in contact with the bottom surface of the tank body 1, which can make the objects at the bottom of the tank body 1 float, reduce sedimentation, and facilitate uniform mixing.

[0025] In use, the drive mechanism 3 is started, which drives the first screw 21 to rotate. Due to the opposite thread directions at both ends of the first screw 21 and the limiting effect of the first limiting rod 22, the distance between the two first sliders 23 can be lengthened or shortened, which makes the two sets of stirring mechanisms 2 move and stir at the same time, so as to facilitate thorough stirring. The stirring motor 28 is started, and the output shaft of the stirring motor 28 drives the stirring rod 24 to rotate, which makes the first stirring blade 25, the second stirring blade 26, and the third stirring blade 27 rotate. The three stirring blades increase the stirring force on the sewage, which facilitates thorough stirring.

[0026] Reference Figure 1-2 The drive mechanism 3 includes a first motor 31, which is fixedly mounted on the outer wall of the pool body 1 near the end of the first screw 21 that extends out of the pool body 1. The output shaft of the first motor 31 is fixedly connected to the end of the first screw 21 that extends out of the pool body 1. When the first motor 31 is started, the output shaft of the first motor 31 can drive the first screw 21 to rotate, providing power for the movement of the two first sliders 23.

[0027] Reference Figure 1-3The sludge scraping mechanism 4 includes a sludge scraping assembly 41 and a drive assembly 42. The sludge scraping assembly 41 includes a second screw 411, a second limiting rod 412, a second slider 413, and scrapers 414. There are two second screws 411 and two second limiting rods 412, each positioned along the height of the pool body 1 at one of the four corners within the pool body 1. Both ends of the second screw 411 are rotatably connected to the pool body 1, and both ends of the second limiting rods 412 are fixed within the pool body 1. There are four second sliders 413, each mounted on one of the two second screws 411 and one of the two second limiting rods 412, and each slider is threaded to the second screw 411 and slidably connected to the second limiting rod 412. There are four scrapers 414, each fixed to the side of two adjacent second sliders 413 near the sidewall of the pool body 1, and abutting against the sidewall of the pool body 1. The drive assembly 42 drives the two second screws 411 to rotate.

[0028] When the drive assembly 42 is activated, it drives the second screw 411 to rotate. Due to the threaded connection between the second slider 413 and the second screw 411, and the limiting effect of the second limiting rod 412 and the scraper 414, the second slider 413 moves along the height direction of the second screw 411, thereby driving the scraper 414 to move along the height direction of the tank body 1. This allows the scraper 414 to remove the material adhering to the side wall of the tank body 1, making it fully mixed with the sewage and facilitating more uniform stirring.

[0029] Reference Figure 2-3 The drive assembly 42 includes a first spur gear 421, a second spur gear 422, a first bevel gear 423, and a second bevel gear 424. The first spur gear 421 is fixed to the first screw 21 at a non-threaded, midpoint. A crossbar 425 is provided on the top wall of the pool body 1 on the side of the first screw 21 away from the first limiting rod 22. The crossbar 425 is parallel to the first screw 21, and its two ends are rotatably connected to the side wall of the pool body 1. The second spur gear 422 is fixed at the midpoint of the crossbar 425 and meshes with the first spur gear 421. There are two first bevel gears 423, each fixed to one end of the crossbar 425 near the two second screws 411. There are also two second bevel gears 424, each fixed to the top of one of the two second screws 411 and meshing with one of the two first bevel gears 423.

[0030] The first motor 31 drives the first screw 21 to rotate, which in turn drives the first sprocket 421 to rotate. Since the first sprocket 421 meshes with the second sprocket 422, it also drives the second sprocket 422 to rotate. Since the second sprocket 422 is fixed on the crossbar 425, the crossbar 425 rotates, which in turn drives the two first bevel gears 423 to rotate. Since the first bevel gears 423 mesh with the second bevel gears 424, the second bevel gear 424 rotates, which ultimately causes the second screw 411 to rotate, providing power.

[0031] The working principle of this utility model is as follows: When in use, the first motor 31 is started, which can drive the two sets of stirring mechanisms 2 to move. Then, the stirring motor 28 is started, which can make the first stirring blade 25, the second stirring blade 26, and the third stirring blade 27 rotate, so as to achieve stirring while moving, and to fully stir the sewage. At the same time, the sludge scraping mechanism 4 can also remove the substances adhering to the side wall of the tank 1, so that they are fully mixed with the sewage, and it is easier to stir more thoroughly.

[0032] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A stirring device for a sewage tank, characterized in that: The system includes a hollow pool body (1) with an open top, a stirring mechanism (2) and a driving mechanism (3) located inside the pool body (1), and a sludge scraping mechanism (4) located at the four corners of the pool body (1). The top of the pool body (1) is hinged with a cover plate (11). The stirring mechanism (2) includes a first screw (21) located at the top of the pool body (1) along the length of the pool body (1), a first limiting rod (22) arranged parallel to the first screw (21), two first sliders (23), two stirring rods (24), two sets of first stirring blades (25), two sets of second stirring blades (26), and two sets of third stirring blades (27). One end of the first screw (21) passes through the side wall of the pool body (1) and is rotatably connected to it, while the other end is rotatably connected to the side wall of the pool body (1). The threads of the two ends of the first screw (21) are opposite. The first limiting rod (22) is fixed on the side wall of the pool body (1) on one side of the first screw (21). The first slider (23) is threaded to the two ends of the first screw (21) with opposite thread directions and is threaded to it. The two first sliders (23) also pass through the first limiting rod (22) and are slidably connected to it. The driving mechanism (3) drives the first screw (21) to rotate. The two first sliders (23) are respectively fixed with stirring motors (28). The two stirring rods (24), two sets of first stirring blades (25), two sets of second stirring blades (26), and two sets of third stirring blades (27) correspond to the two first sliders (23). The stirring rods (24) are set along the height direction of the pool body (1) and fixed on the output shaft of the stirring motor (28). The two sets of first stirring blades (25), two sets of second stirring blades (26), and two sets of third stirring blades (27) are evenly distributed along the height direction of the stirring rods (24). The sludge scraping mechanism (4) is used to remove the adhering substances on the side wall of the pool body (1).

2. The stirring device for a sewage tank according to claim 1, characterized in that: Each of the first stirring blades (25) includes two straight rods, which are symmetrically fixed at the top of the stirring rod (24).

3. The stirring device for a sewage tank according to claim 1, characterized in that: Each group of second stirring blades (26) consists of double-layered spiral blades, fixed below the stirring rod (24) and the two layers of spiral blades are alternately twisted.

4. The stirring device for a sewage tank according to claim 3, characterized in that: The second stirring blade (26) has a through hole (261).

5. The stirring device for a sewage tank according to claim 1, characterized in that: Each group of the third stirring blades (27) consists of four straight stirring rods (24), which are evenly fixed at the bottom of the stirring rods (24), and the bottom surface of the blades is in contact with the bottom surface of the tank body (1).

6. The stirring device for a sewage tank according to claim 1, characterized in that: The drive mechanism (3) includes a first motor (31) fixed on the outer wall of the pool body (1), and the output shaft of the first motor (31) is fixedly connected to one end of the first screw (21) passing through the pool body (1).

7. The stirring device for a sewage tank according to claim 1, characterized in that: The sludge scraping mechanism (4) includes a sludge scraping assembly (41) and a drive assembly (42). The sludge scraping assembly (41) includes two second screws (411), two second limiting rods (412), four second sliders (413), and four scrapers (414). The two second screws (411) are arranged along the height direction of the pool body (1) and are rotatably connected inside the pool body (1). The two second limiting rods (412) are also arranged along the height direction of the pool body (1) and are fixed to the pool body (1). Inside the body (1), four second sliders (413) correspond to two second screws (411) and two second limiting rods (412), and are respectively threaded to the second screws (411) and slidably connected to the second limiting rods (412). Four scrapers (414) are respectively fixed on the side of the adjacent two second sliders (413) near the side wall of the pool body (1), and respectively abut against the side wall of the pool body (1). The drive assembly (42) drives the two second screws (411) to rotate.

8. The stirring device for a sewage tank according to claim 7, characterized in that: A crossbar (425) is provided on the top wall of the pool body (1) on the side away from the first limiting rod (22) of the first screw (21). The crossbar (425) is parallel to the first screw (21) and its two ends are rotatably connected to the side wall of the pool body (1). The drive assembly (42) includes a first spur gear (421) fixed at the unthreaded position of the first screw (21), a second spur gear (422) fixed on the crossbar and meshing with the first spur gear (421), a first bevel gear (423) fixed on the crossbar (425) near the two ends of the two second screws (411), and two second bevel gears (424). The two second bevel gears (424) are fixed on the top ends of the two second screws (411) and mesh with the two first bevel gears (423).

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