Perimeter drive mud scraper structure

Abstract

The utility model belongs to sewage treatment equipment technical field relates to a kind of peripheral drive mud scraper structure, including sludge pool, and the rotary center structure of sludge pool has vertically extended hollow column, hollow column is equipped with pre-buried pipe, the water inlet that pre-buried pipe upper portion is equipped with the penetration hollow column, and the lower end of pre-buried pipe extends to sludge pool outside;The top of hollow column rotationally arranged working bridge, and the length direction both ends of working bridge are respectively installed a group of driving components, and driving component drives working bridge to rotate on sludge pool top surface, and working bridge is installed vertically downward extending mud scraping plate;Driving component includes the driving speed reducer installed in the bottom surface of working bridge.The utility model structure is reasonable and ingenious, and mud scraping plate adopts the structure of middle support, two side drives, can ensure that work smoothly;Meanwhile, mud scraper is equipped with overload detection sensor, and during working, the effective detection of overload can be realized, and through the cooperation of sensor and contact piece, the pulse signal of passive on-off quantity can be generated.

Description

Technical Field

[0001] This utility model belongs to the technical field of sewage treatment equipment and relates to a peripheral drive sludge scraper structure. Background Technology

[0002] With the rapid development of my country's industrial production, the generation of wastewater is increasing daily, and wastewater treatment has become an issue that must be addressed for industrial development. Sludge scrapers are large-scale equipment used in wastewater treatment. Currently, in the field of wastewater treatment, natural sedimentation is commonly used to treat sludge particles in wastewater. Sludge scrapers are machines that remove sludge from river channels and are used in large-diameter circular sedimentation tanks in urban wastewater treatment plants, waterworks, and industrial wastewater treatment plants to remove scum that has settled at the bottom of the tank and skim off the surface.

[0003] Existing sludge scrapers are typically center-driven structures. A support is erected on top of the sedimentation tank, and a reducer is installed upside down on the support. The reducer drives the scraper blades inside the sedimentation tank to rotate. This structure suffers from a problem of high load on the reducer because only the reducer operates. Summary of the Invention

[0004] To address the aforementioned problems, this utility model provides a peripheral drive sludge scraper structure. This sludge scraper adopts a central support and side drive structure, which enables smooth operation.

[0005] According to the technical solution of this utility model: a peripheral drive sludge scraper structure, characterized in that: it includes a sludge tank, the rotation center of the sludge tank is constructed with a vertically extending hollow column, a pre-embedded pipe is provided in the hollow column, the upper part of the pre-embedded pipe is provided with a water inlet penetrating the hollow column, and the lower end of the pre-embedded pipe extends to the outside of the sludge tank. The top of the hollow column is rotatably equipped with a working bridge. A set of driving components and a driven wheel are respectively installed at both ends of the working bridge along its length. The driving components drive the working bridge to rotate on the top surface of the sludge tank. The working bridge is equipped with a sludge scraper that extends vertically downward. The drive component includes a drive reducer mounted on the bottom surface of the working bridge, a first coupling fixed on the output shaft of the drive reducer, and a second coupling fixed on the main drive shaft. The first coupling and the second coupling are fixedly connected by a safety pin. The second coupling is fastened to a contact plate. A traveling wheel is mounted on the main drive shaft. The main drive shaft is rotatably connected to a main shaft support on the bottom surface of the working bridge, and a sensor is mounted on the main shaft support. The notch on the contact plate can be detected by the sensor during rotation.

[0006] As a further improvement of this utility model, the contact piece is provided with several blades evenly distributed along the circumference, and a gap is formed between two adjacent blades.

[0007] As a further improvement of this utility model, the scraper includes two arc-shaped first scraper and second scraper, which are respectively placed on both sides of the working bridge, and the first scraper and second scraper are approximately S-shaped.

[0008] As a further improvement of this utility model, the bottom surface of the sludge tank is a smooth transition structure that gradually deepens from the edge to the hollow column.

[0009] As a further improvement of this utility model, the bottom rotation center of the sludge tank is constructed with a recessed sludge hopper around the hollow column.

[0010] As a further improvement of this utility model, the sensor is fixedly connected to the main shaft bracket via a sensor bracket, and the sensor can be adjusted in position within the waist-shaped groove of the sensor bracket.

[0011] The technical advantages of this utility model are as follows: The utility model has a reasonable and ingenious structure. The scraper blade adopts a central support and two-sided drive structure, which ensures smooth operation. Simultaneously, the scraper is equipped with an overload detection sensor, which can effectively detect overload during operation. Through the sensor's interaction with the contact plate, a passive switching pulse signal can be generated. This pulse signal can be transmitted via wire to the programmable controller in the electrical control box. The time for receiving the pulse signal can be specified through programming. If no pulse signal is received within the specified time, it can be determined that the scraper is overloaded, the safety pin is sheared, and the scraper has stopped working. This allows operators to detect the scraper's overload and cessation of operation immediately. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of the working principle of the sludge scraper.

[0013] Figure 2 This is a side view schematic diagram of the working principle of the sludge scraper.

[0014] Figure 3 This is a front view schematic diagram of the drive unit.

[0015] Figure 4 This is a side view of the drive unit.

[0016] Figure 5 This is a magnified front view schematic diagram of a portion of the drive device.

[0017] Figure 6 This is a partially enlarged side view of the drive unit. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] Figure 1-6 The components include a working bridge 1, a drive unit 2, a scraper 3, a first scraper 3-1, a second scraper 3-2, a sludge hopper 4, a drive reducer 5, a coupling 6, a coupling 7, a safety pin 8, a transmission main shaft 9, a traveling wheel 10, a contact piece 11, a sensor 12, a sludge tank 13, a hollow column 13-1, and a pre-embedded pipe 13-2, etc.

[0021] like Figure 1-6 As shown, this utility model is a peripheral drive sludge scraper structure, including a sludge tank 13. The rotation center of the sludge tank 13 is constructed with a vertically extending hollow column 13-1. A pre-embedded pipe 13-2 is provided inside the hollow column 13-1. The upper part of the pre-embedded pipe 13-2 is provided with an inlet 13-3 that penetrates the hollow column 13-1. The lower end of the pre-embedded pipe 13-2 extends to the outside of the sludge tank 13.

[0022] A working bridge 1 is rotatably installed on the top of the hollow column 13-1. A set of driving components 2 and a driven wheel are respectively installed at both ends of the working bridge 1 along its length. The driving components 2 drive the working bridge 1 to rotate on the top surface of the sludge tank 13. The working bridge 1 is equipped with a vertically downward extending scraper 3.

[0023] The drive component 2 includes a drive reducer 5 mounted on the bottom surface of the working bridge 1. A first coupling 6 is fixed on the output shaft of the drive reducer 5, and a second coupling 7 is fixed on the transmission main shaft 9. The first coupling 6 and the second coupling 7 are fixedly connected by a safety pin 8. The second coupling 7 is fastened to a contact piece 11. A traveling wheel 10 is mounted on the transmission main shaft 9. The transmission main shaft 9 is rotatably connected to the main shaft support on the bottom surface of the working bridge 1, and a sensor 12 is mounted on the main shaft support. The notch on the contact piece 11 can be detected by the sensor 12 during rotation.

[0024] The contact piece 11 has several blades evenly distributed along the circumference, with a gap formed between two adjacent blades.

[0025] The scraper 3 includes two arc-shaped scraper blades, a first scraper blade 3-1 and a second scraper blade 3-2. The first scraper blade 3-1 and the second scraper blade 3-2 are placed on both sides of the working bridge 1, and the first scraper blade 3-1 and the second scraper blade 3-2 are roughly S-shaped.

[0026] The bottom surface of the sludge tank 13 has a smooth transition structure that gradually deepens from the edge to the hollow column 13-1.

[0027] The bottom of the sludge tank 13 has a recessed sludge hopper 4 constructed around the hollow column 13-1 at the center of rotation.

[0028] The sensor 12 is fixedly connected to the spindle bracket via a sensor bracket, and the sensor 12 can be adjusted in position within the waist-shaped groove of the sensor bracket.

[0029] like Figure 1-6 As shown, the working process of this utility model is as follows: the sludge scraper drives the working bridge 1 to rotate around the center of the sedimentation tank through the drive component 2 on the side of the tank, thereby driving the scraper plate 3 at the bottom of the tank to rotate, so that the sludge at the bottom of the tank is scraped and collected into the sludge hopper 4 at the bottom of the center of the tank.

[0030] like Figure 3-6 The diagram shows the structure of the overload detection alarm device for the drive component of the sludge scraper. The drive component 2 is connected to the main transmission shaft 9 via a drive reducer 5, coupling 6, coupling 7, and safety pin 8, transmitting torque to ultimately rotate the traveling wheel 10 forward. When the sludge scraper is not overloaded and the safety pin 8 is not sheared, the contact piece 11 fixed on the coupling 7 rotates with the coupling 7. The notch on the contact piece 11 can be accurately detected by the sensor 12 during rotation. The sensor 12 can then generate a passive switching pulse signal, which can be transmitted to the programmable controller (PLC) in the control box via wires. If the PLC receives the pulse signal within a specified time, it can determine that the sludge scraper is not overloaded. When the sludge scraper is overloaded, the safety pin 8 is sheared, and the coupling 6 connected to the reducer 5 continues to rotate, while the coupling 7 and the contact piece 11 fixed on the coupling 7 stop rotating. The sensor 12 can no longer detect the notch on the contact piece 11, and therefore cannot generate a passive switching pulse signal. Consequently, the PLC in the control box cannot receive the pulse signal. If the PLC does not receive a pulse signal within the specified time, it can be determined that the scraper is overloaded, the safety pin 8 is sheared, and the scraper has stopped rotating. At this time, the scraper can send an alarm signal to the central control room, allowing staff to immediately detect the problem and troubleshoot it in a timely manner, without affecting the normal operation of the factory.

[0031] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A perimeter drive mud scraper structure, characterized by: The sludge tank (13) includes a sludge tank (13) with a vertically extending hollow column (13-1) at the center of rotation. A pre-embedded pipe (13-2) is provided inside the hollow column (13-1). The upper part of the pre-embedded pipe (13-2) is provided with an inlet (13-3) that penetrates the hollow column (13-1). The lower end of the pre-embedded pipe (13-2) extends to the outside of the sludge tank (13). The top of the hollow column (13-1) is rotatably equipped with a working bridge (1). A set of driving components (2) and a driven wheel are respectively installed at both ends of the working bridge (1) along its length. The driving components (2) drive the working bridge (1) to rotate on the top surface of the sludge tank (13). The working bridge (1) is equipped with a vertically downward extending scraper (3). The drive component (2) includes a drive reducer (5) mounted on the bottom surface of the working bridge (1). A first coupling (6) is fixed on the output shaft of the drive reducer (5), and a second coupling (7) is fixed on the transmission main shaft (9). The first coupling (6) and the second coupling (7) are fixedly connected by a safety pin (8). The second coupling (7) is fastened to a contact piece (11). A traveling wheel (10) is mounted on the transmission main shaft (9). The transmission main shaft (9) is rotatably connected to the main shaft support on the bottom surface of the working bridge (1), and a sensor (12) is mounted on the main shaft support. The notch on the contact piece (11) can be detected by the sensor (12) during rotation.

2. The perimeter drive mud scraper structure as claimed in claim 1, wherein: The contact piece (11) has several blades evenly distributed along the circumference, with a gap formed between two adjacent blades.

3. The perimeter drive mudding machine structure of claim 1, wherein: The scraper (3) includes two arc-shaped first scraper (3-1) and second scraper (3-2). The first scraper (3-1) and the second scraper (3-2) are placed on both sides of the working bridge (1), and the first scraper (3-1) and the second scraper (3-2) are roughly S-shaped.

4. The perimeter drive mudding machine structure of claim 1, wherein: The bottom surface of the sludge tank (13) is a smooth transition structure that deepens sequentially from the edge to the hollow column (13-1).

5. The perimeter drive mudding machine structure of claim 1, wherein: The bottom rotation center of the sludge tank (13) is constructed with a recessed sludge hopper (4) around the hollow column (13-1).

6. The perimeter-driven mud scraper structure of claim 1, wherein: The sensor (12) is fixedly connected to the main shaft bracket through the sensor bracket, and the sensor (12) can be adjusted in position in the waist-shaped groove of the sensor bracket.

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