High-torsion concentrated mud scraping device with rotating frame

Abstract

The utility model discloses a high-torsion concentrated mud scraping device with a rotating frame. The high-torsion concentrated mud scraping device comprises a transmission shaft, the rotating frame and a mud tank scraping plate, the rotating frame comprises an upper cross-shaped frame and a square three-dimensional frame, a first concentration scraping arm and a second concentration scraping arm are symmetrically arranged on two corresponding vertical side surfaces of the square three-dimensional frame, and the first concentration scraping arm comprises a concentration grid bar, a cantilever beam and a scraping plate; one end of the cantilever beam is connected with the rotating frame, a plurality of parallel scrapers at equal intervals are welded at the lower end of the cantilever beam, the included angle between each scraper and the cantilever beam is 45 degrees, and a row of vertical concentrated grid bars at equal intervals are welded at the upper end of the cantilever beam. The device provided by the utility model is simple and reliable in structural design and strong in torque transmission capability, and can be applied to large-diameter concentration tanks and projects with higher solid content of concentrated sludge and larger load.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment devices, and particularly relates to a high-torque concentrating sludge scraping device with a rotating frame. Background Technique

[0002] The sludge scraping and concentrating equipment is applied in the horizontal flow sedimentation tank, concentrating tank and high-efficiency clarifier of the sewage treatment plant. Through the rotation of the equipment, the sludge settled at the bottom of the tank is scraped and collected into the central mud trough, and flows into the corresponding process section through the buried pipeline at the bottom, so as to achieve the effect of removing pollutants in the water.

[0003] At present, the commonly used sludge scraping device in the market is a suspension type sludge scraping device, which adopts a scraping arm with a symmetric truss structure and is supported by an inclined tie rod. The torque transmission effect of the whole structure has a large limitation. When it is used in a concentrating tank with a large diameter, and in a project with a high solid content rate of concentrated sludge and a large load, it is easy to be overloaded and cause an alarm to stop the machine. In order to increase the torque of the equipment steel structure, it can only be achieved by increasing the profile size or thickness of the scraping arm truss and the inclined tie rod support. In this way, the manufacturing cost of the whole component is increased, and the increase in the weight of the whole suspension device leads to the increase in the model of the driving device, which superimposes the manufacturing cost of the equipment. Content of the Utility Model

[0004] Aiming at the technical problems existing in the above-mentioned prior art, the purpose of the utility model is to provide a high-torque concentrating sludge scraping device with a rotating frame.

[0005] In order to achieve the above purpose, the technical solution provided by the utility model is as follows:

[0006] A high-torque concentrating sludge scraping device with a rotating frame, the device is suspended at the central position of the bottom of the tank, and includes a transmission shaft, a rotating frame and a mud trough scraper;

[0007] The rotating frame includes an upper cross-shaped frame and a square three-dimensional frame. The upper end surface of the upper cross-shaped frame is connected to the lower end of the vertically arranged transmission shaft through a connecting flange, and its lower end surface is welded to the upper end surface of the square three-dimensional frame. An inclined reinforcing beam is welded to each of the four vertical side surfaces of the square three-dimensional frame, and a first concentrating scraping arm and a second concentrating scraping arm are symmetrically arranged on two corresponding vertical side surfaces. The first concentrating scraping arm includes concentrating grid bars, a cantilever beam and a scraper; one end of the cantilever beam is connected to the rotating frame, and a plurality of parallel and equally spaced scrapers are welded to its lower end, and the angle between the scraper and the cantilever beam is 45°, and a row of equally spaced and erected concentrating grid bars are welded to the upper end of the cantilever beam;

[0008] The lower end of the square three-dimensional frame is connected with a mud trough scraper matching the shape of the mud trough at the bottom of the tank.

[0009] Among them, on each of the two vertical side surfaces of the square three-dimensional frame connecting the first concentrated scraping arm and the second concentrated scraping arm, three hinge ears arranged in a right-angled triangle are respectively provided, two of which are arranged at the lower ends of the vertical side surface, and one is arranged at the upper end. The hinge ear located at the right-angled position is connected to the corresponding cantilever beam, and the other hinge ear arranged at the lower side is connected to one end of the horizontal connecting beam. The other end of the horizontal connecting beam is welded to the cantilever beam. The hinge ear located at the upper side is connected to one end of the vertical connecting beam, and the other end is welded to the cantilever beam.

[0010] Among them, the horizontal connecting beam and the hinge ear at the phase position are connected by bolt fasteners.

[0011] Among them, the vertical connecting beam and the hinge ear at the phase position are connected by bolt fasteners.

[0012] Among them, the concentrated grid bars are angle steels.

[0013] Among them, the centroid of the sludge trough scraper is consistent with the axis of the transmission shaft.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The device provided by the present application has a simple and reliable structural design, strong torque transmission ability, and can be applied to large-diameter thickening tanks, as well as projects with a high solid content and large load of thickened sludge.

[0016] In addition, the concentrated scraping arm includes a long cantilever beam. A plurality of parallel and equally spaced scrapers are arranged below the cantilever beam, and a row of equally spaced vertical angle steels are arranged above the cantilever beam. The angle steels are welded and fixed to the cantilever beam. A row of equally spaced vertical angle steels forms concentrated grid bars, which accelerates the sedimentation of sludge as the equipment rotates; compared with the traditional truss-structured scraping arm, the whole component is simple and reliable, and has strong installation applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the device provided by the embodiment of the present application;

[0018] Figure 2 It is a schematic structural diagram of the rotating frame in the embodiment of the present application;

[0019] Figure 3 It is a schematic structural diagram of the concentrated scraping arm in the embodiment of the present application;

[0020] Figure 4 It is a schematic installation structure diagram of the horizontal connecting beam in the embodiment of the present application;

[0021] Figure 5 It is a schematic installation structure diagram of the vertical connecting beam in the embodiment of the present application;

[0022] In the figure, there are a drive shaft 1, a rotating frame 2, a vertical connecting beam 3, a horizontal connecting beam 4, a first thickening scraping arm 5, a mud trough scraper 6, a pool 7, a bottom mud trough 8 of the pool, a connecting flange 21, an upper cross-shaped frame 22, an inclined strengthening beam 23, a square three-dimensional frame 24, a hinge ear 25, thickening grid bars 51, a cantilever beam 52, and a scraper 53. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0025] In the description of this patent, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. It can refer to direct connection or indirect connection. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0026] Please refer to Figures 1 - 5 As shown, it is a structural embodiment provided by the present invention.

[0027] This embodiment provides a high-torque thickening sludge scraping device with a rotating frame, including a drive shaft 1, a rotating frame 2, and a mud trough scraper 6; after assembly, the entire device is suspended at the center position of the bottom of the pool 7 through the drive shaft 1.

[0028] The rotating frame 2 includes an upper cross-shaped frame 22 and a square three-dimensional frame 24. The upper end surface of the upper cross-shaped frame 22 is connected to the lower end of a vertically arranged transmission shaft 1 through a connecting flange 21, and its lower end surface is welded to the upper end surface of the square three-dimensional frame 24. An inclined reinforcing beam 23 is welded to each of the four vertical side surfaces of the square three-dimensional frame 24, and a first thickening scraping arm 5 and a second thickening scraping arm are symmetrically arranged on two corresponding vertical side surfaces. The first thickening scraping arm 5 includes thickening grid bars 51, a cantilever beam 52, and a scraping plate 53. One end of the cantilever beam 52 is connected to the rotating frame 2, and a plurality of parallel and equally spaced scraping plates 53 are welded to its lower end. The included angle between the scraping plate 53 and the cantilever beam is 45°. A row of equally spaced and upright thickening grid bars 51 are welded to the upper end of the cantilever beam 52.

[0029] A sludge trough scraping plate 6 that matches the shape of the bottom sludge trough 8 of the pool is connected to the lower end of the square three-dimensional frame 24.

[0030] It should be noted that the power mechanism and the fixing structure connected to the upper end of the transmission shaft 1 both adopt existing technologies and will not be elaborated here. The power mechanism can drive the transmission shaft 1 to rotate, thereby driving the entire device to rotate.

[0031] It should be noted that the rotating frame is made of steel and is welded by steel profiles into a three-dimensional rotating cage. There is a connecting flange 21 on the upper plane of the rotating cage, which is connected to the lower flange of the transmission shaft 1 by bolt fasteners. The entire rotating frame has 4 vertical side surfaces, and an inclined reinforcing beam 23 is welded to the diagonal of each side surface. The welding direction depends on the rotation direction of the device. 6 hinge ears are welded to the side surface of the rotating frame for connecting with other components. The rotating frame provided in this application is the core component for transmitting torque, with a simple and reliable structural design and strong torque transmission capacity. In addition, the hollow structure can facilitate the installation of a sludge discharge sleeve valve device in the center.

[0032] It should be noted that the thickening scraping arm is made of steel and is welded by steel profiles. The thickening scraping arm includes a through-length cantilever beam. A plurality of parallel and equally spaced scraping plates are arranged below the cantilever beam. The spacing between the scraping plates and the length of the scraping plates both meet the condition that the rotating fan surfaces of adjacent two scraping plates have an overlap of 5 - 10 cm during the rotation process. One end of the cantilever beam of the thickening scraping arm is connected to the hinge ear below the rotating frame by bolt fasteners. The thickening grid bars are angle steels, and the thickening grid bars arranged above the cantilever beam accelerate the sedimentation of the sludge as the device rotates.

[0033] Preferably, three articulated ears 25 arranged in a right triangle are respectively provided on each of the two vertical side surfaces of the square three-dimensional frame 24 connecting the first concentrated scraping arm 5 and the second concentrated scraping arm, two of which are arranged at the lower ends of the vertical side surfaces, and one is arranged at the upper end. The articulated ear located at the right angle is connected to the corresponding cantilever beam 52, and the other articulated ear arranged at the lower side is connected to one end of the horizontal connecting beam 4. The other end of the horizontal connecting beam 4 is welded to the cantilever beam 52. The articulated ear located at the upper side is connected to one end of the vertical connecting beam 3, and the other end is welded to the cantilever beam 52.

[0034] It should be noted that one end of the vertical connecting beam is connected to the upper hinge ear of the rotating frame by a bolt fastener, and the other end is welded and fixed to the cantilever beam. After welding, the cantilever beam is parallel to the plane of the slope at the bottom of the pool; the vertical connecting beam plays a role in vertically positioning and fixing the concentrated scraping arm.

[0035] It should be noted that one end of the horizontal connecting beam is connected to the lower hinge ear of the rotating frame by a bolt fastener, and the other end is welded and fixed to the side surface of the cantilever beam. The horizontal connecting beam plays a role in horizontally positioning and fixing the concentrated scraping arm.

[0036] It should be noted that the sludge trough scraper is welded under the rotating frame, and the centroid is consistent with the axis of the transmission shaft during on-site welding.

[0037] Working principle: Sewage enters the tank (settling tank) at a certain flow rate. As the flow rate decreases, the inert and activated sludge in the sewage settles to the bottom of the tank. The driving mechanism of the thickener drives the concentrated scraping arm to rotate through the transmission shaft, and the concentrated grid bars installed on the concentrated scraping arm also rotate accordingly, accelerating the sludge settlement; the scraper fixed on the concentrated scraping arm gradually scrapes the sediment from the edge of the pool to the bottom sludge trough in the center of the pool, and flows into the corresponding process section through the buried pipeline at the bottom. The upper clear water flows into the next process through the outlet weir plate to achieve the effect of removing the sediment in the sewage.

[0038] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-torque concentrated sludge scraping device with a rotating frame, characterized in that, The device is suspended at the central position of the bottom of the tank (7), and includes a transmission shaft (1), a rotating frame (2) and a sludge trough scraper (6); The rotating frame (2) includes an upper cross-shaped frame (22) and a square three-dimensional frame (24). The upper end surface of the upper cross-shaped frame (22) is connected to the lower end of the vertically arranged transmission shaft (1) through a connecting flange (21), and its lower end surface is welded to the upper end surface of the square three-dimensional frame (24). Diagonal strengthening beams (23) are respectively welded on the four vertical side surfaces of the square three-dimensional frame (24), and a first thickening scraping arm (5) and a second thickening scraping arm are symmetrically arranged on two corresponding vertical side surfaces. The first thickening scraping arm (5) includes thickening grid bars (51), a cantilever beam (52) and a scraper (53); One end of the cantilever beam (52) is connected to the rotating frame (2), and a plurality of parallel and equally spaced scrapers (53) are welded to its lower end, and the included angle between the scraper (53) and the cantilever beam is 45°. A row of equally spaced and erected thickening grid bars (51) are welded to the upper end of the cantilever beam (52); The lower end of the square three-dimensional frame (24) is connected with a sludge trough scraper (6) matching the shape of the bottom sludge trough (8) of the tank.

2. The high-torque concentrated sludge scraping device with a rotating frame according to claim 1, wherein, Three hinge ears (25) arranged in a right triangle are respectively arranged on the two vertical side surfaces of the square three-dimensional frame (24) connecting the first thickening scraping arm (5) and the second thickening scraping arm. Two of them are arranged at the lower ends of the two ends of the vertical side surface, and one is arranged at the upper end. The hinge ear at the right angle position is connected to the corresponding cantilever beam (52). The other hinge ear arranged at the lower side is connected to one end of the horizontal connecting beam (4). The other end of the horizontal connecting beam (4) is welded to the cantilever beam (52). The hinge ear arranged at the upper side is connected to one end of the vertical connecting beam (3), and the other end is welded to the cantilever beam (52).

3. The high-torque concentrated sludge scraping device with a rotating frame according to claim 2, characterized in that, The horizontal connecting beam (4) is connected to the hinge ear at the corresponding position through a bolt fastener.

4. The high-torque concentrated sludge scraping device with a rotating frame according to claim 2, characterized in that, The vertical connecting beam (3) is connected to the hinge ear at the corresponding position through a bolt fastener.

5. The high-torque concentrated sludge scraping device with a rotating frame according to claim 1, wherein, The thickening grid bars (51) are angle steels.

6. The high-torque concentrated sludge scraping device with a rotating frame according to claim 1, characterized in that, The centroid of the sludge trough scraper (6) coincides with the axis of the transmission shaft (1).

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