Safety protection device for radial-flow sedimentation tank

Abstract

The utility model belongs to the field of sewage treatment, and particularly relates to a safety protection device for a radial-flow sedimentation tank, which comprises a working bridge, a transmission device and a walking board, an inner side guardrail is arranged on the inner edge of the walking board close to the sedimentation tank, and an outer side guardrail is arranged on the outer edge far away from the sedimentation tank; a connecting bridge is arranged at the top of the inner side guardrail, one end of the connecting bridge is connected with the working bridge, and the other end is arranged above the walking board and forms a gap with the walking board; the device is simple in structure and easy to operate, the safety of operators can be guaranteed to the maximum extent, the situation that drowning accidents are caused due to the fact that the operators slip or accidentally fall into the sedimentation tank is avoided, the dangerous situation that the operators fall from the high position of the sedimentation tank is avoided, and the overall safety performance is improved.

Description

Technical Field

[0001] The utility model belongs to the field of sewage treatment, and in particular relates to a radial flow type sedimentation tank safety protection device. Background Art

[0002] With the rapid development of my country's industrial production, the generation of wastewater and waste gas has increased day by day. In recent years, the country has gradually increased its attention to environmental protection, and the treatment of wastewater and waste gas has become a problem that must be solved for industrial development. Radial flow sedimentation tanks are common structures in sewage treatment. They are mostly circular and mainly used for sewage sedimentation. The settled sludge is collected and treated by a rotary scraper to achieve solid-liquid separation.

[0003] Peripheral drive scraper suction machine is mostly used in radial flow secondary sedimentation tanks in water supply or drainage projects. The scraper is driven by the transmission devices on both sides of the edge, and rotates around the central support on the central pier of the pool. The sewage is diffused from the water inlet pipe in the center of the pool through the guide tube, and then flows out evenly to the periphery in a radial shape. The suspended sludge is deposited on the bottom of the pool after sedimentation, and the supernatant is discharged from the pool through the overflow weir plate and the outlet trough. The working bridge drives the scraper arm to rotate, and the scraper fixed on the scraper arm gradually scrapes the mud from the pool side to the mud collecting bucket in the center of the pool and discharges it outside the pool. At the same time, the scum in the pool is collected by the scum scraper and discharged to the slag discharge bucket outside the pool.

[0004] The working bridge of the currently commonly used peripheral transmission scraper and suction sludge machine is designed as a straight plane, which poses a risk of falling and drowning. There are great safety hazards when on-site operators conduct inspections and sampling, especially when one person works alone at night and in the sedimentation tank with a sealed top for anaerobic treatment. Once there is a physical abnormality or an operating error, falling into the water or falling from a height may cause serious casualties. Utility Model Content

[0005] In view of the potential safety hazards existing in the peripheral transmission scraper and suction sludge machines on the existing radial flow sedimentation tanks, the utility model is improved on the basis of the original equipment in combination with actual production conditions. A safety protection device for a radial flow sedimentation tank is provided, a connecting bridge is arranged, and guardrails are arranged on the inner and outer edges of the walkway, the safety factor is greatly improved, the modification operation is simple and the cost is low; the device has a simple structure and is easy to operate, and can ensure the safety of the operators to the greatest extent, avoid drowning accidents caused by slipping or accidentally falling into the sedimentation tank, and avoid falling from a high place in the sedimentation tank, thereby improving the overall safety performance.

[0006] The technical solution of the utility model is as follows:

[0007] A radial flow sedimentation tank safety protection device comprises a working bridge, a transmission device and a walkway, wherein an inner guardrail is arranged near the inner edge of the sedimentation tank, and an outer guardrail is arranged away from the outer edge of the sedimentation tank; a connecting bridge is arranged on the top of the inner guardrail, one end of the connecting bridge is connected to the working bridge, and the other end is arranged above the walkway with a gap between the connecting bridge and the transmission device, and the transmission device is arranged on the walkway.

[0008] Preferably, protective guardrails are arranged on both sides of the connecting bridge, and the connecting bridge is welded to the protective guardrails.

[0009] Preferably, the transmission device comprises a bracket, a driving motor and a roller. Further preferably, the bottom of the connecting bridge is connected to the bracket, the bracket is movably connected to the roller, the bracket is connected to the driving motor, the driving motor is connected to the roller, and the roller is arranged on the platform.

[0010] Preferably, the connecting bridge is an arch bridge or a trapezoidal bridge.

[0011] Preferably, steps are provided at both ends of the bridge deck connecting the bridge to facilitate climbing the bridge.

[0012] Preferably, the distance between the transmission device and the outer guardrail is less than the distance between the connecting bridge and the outer guardrail, so as to prevent technicians from touching the transmission device and causing malfunctions or safety accidents.

[0013] Preferably, warning signs are provided on the inner guardrail and the outer guardrail to increase safety awareness. Further preferably, necessary drowning rescue facilities, such as life buoys, are hung on the inner guardrail.

[0014] Preferably, the working bridge and the connecting bridge are made of carbon steel, and the inner guardrail, the outer guardrail and the protective guardrail are made of stainless steel to ensure structural strength while having good corrosion resistance.

[0015] Preferably, the working bridge and the connecting bridge are connected by welding. Further preferably, the welding is full welding to ensure the structural strength.

[0016] Preferably, there is a gap between the connecting bridge and the inner guardrail, and there is a gap between the transmission device and the inner guardrail.

[0017] Preferably, the walkway is fixed to the inner and outer guardrails by using expansion bolts.

[0018] In the utility model, the transmission device is installed under the connecting bridge, an inner guardrail is arranged on the inner edge of the walkway of the sedimentation tank, and an outer guardrail is arranged on the outer edge of the walkway, so that the walkway forms a safe and closed corridor, which can prevent drowning and fall from heights, improve the safety factor, and also improve the safety of operators working at night.

[0019] The utility model provides a radial flow sedimentation tank safety protection device. A connecting bridge is provided, and a transmission device is provided under the connecting bridge to transform the working bridge. At the same time, the structural strength of the equipment is guaranteed, and normal and stable operation can be achieved. The device has a simple structure and is easy to operate. Guardrails are provided on the inner and outer edges of the walkway to greatly improve the safety performance. The economic investment is small, and it has good social benefits. The personal safety of the operators is guaranteed, and the occurrence of safety accidents is avoided as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the structural diagram of the commonly used peripheral transmission sludge scraper and suction machine;

[0021] Figure 2 It is a schematic diagram of the structure of the utility model;

[0022] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0023] In the figure, 1 is a sedimentation tank, 2 is a walkway, 3 is a transmission device, 3-1 is a roller, 3-2 is a driving motor, 3-3 is a bracket, 4 is a working bridge, 5 is an inner guardrail, 6 is an outer guardrail, 7 is a connecting bridge, and 8 is a protective guardrail. DETAILED DESCRIPTION

[0024] In order to make the technical solution of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings. The specific examples described here are only used to explain the utility model and are not used to limit the utility model.

[0025] As shown in the figure, the utility model provides a radial flow sedimentation tank safety protection device, including a working bridge 4, a transmission device 3 and a walkway 2. The sedimentation tank 1 is circular, and the walkway 2 is arranged on the outer edge of the sedimentation tank 1. The walkway 2 is an annular structure and is integrally formed with the sedimentation tank 1 by casting reinforced concrete; an inner guardrail 5 is arranged near the inner edge of the sedimentation tank 1, and an outer guardrail 6 is arranged away from the outer edge of the sedimentation tank 1; a connecting bridge 7 is arranged on the top of the inner guardrail 5, one end of the connecting bridge 7 is connected to the working bridge 4, and the other end is arranged above the walkway 2, with a gap between the walkway 2 and the walkway 2; the connecting bridge 7 is connected to the transmission device 3, and the transmission device 3 is arranged on the walkway 2.

[0026] In order to make it easier for technicians to walk between the platform 2 and the connecting bridge 7 , the end of the connecting bridge 7 close to the outer guardrail 6 is closer to the horizontal plane of the platform 2 than the end close to the inner guardrail 5 .

[0027] In another implementation mode, protective guardrails 8 are arranged on both sides of the connecting bridge 7, and the connecting bridge 7 is welded to the protective guardrails 8; the connecting bridge 7 is an arch bridge or a trapezoidal bridge (the side is trapezoidal); steps are arranged at both ends of the bridge deck of the connecting bridge 7 to facilitate boarding the bridge, and the steps are made of carbon steel grating plates.

[0028] In another embodiment, the distance between the transmission device 3 and the outer guardrail 6 is less than the distance between the connecting bridge 7 and the outer guardrail 6. In order to facilitate the technicians to go between the platform 2 and the connecting bridge 7, warning signs are set on the inner guardrail 5 and the outer guardrail 6 to increase safety awareness. Further preferably, necessary drowning rescue facilities, such as life buoys, are hung on the inner guardrail 5.

[0029] In another embodiment, there is a gap between the connecting bridge 7 and the inner guardrail 5 , and there is a gap between the transmission device 3 and the inner guardrail 5 .

[0030] In another embodiment, the working bridge 4 and the connecting bridge 7 are made of carbon steel, and the inner guardrail 5, the outer guardrail 6 and the protective guardrail 8 are made of stainless steel to ensure structural strength and good corrosion resistance. The working bridge 4 and the connecting bridge 7 are connected by welding, and the welding is full welding to ensure structural strength. The walkway 2 and the inner and outer guardrails 6 are fixed with expansion bolts.

[0031] In another embodiment, the transmission device 3 includes a bracket 3-3, a drive motor 3-2 and a roller 3-1, the bottom of the connecting bridge 7 is fixedly connected to the bracket 3-3, the bracket 3-3 is movably connected to the roller 3-1, the bracket 3-3 is connected to the drive motor 3-2 (fixed connection or movably connection can be adopted, as long as the drive electrode 3-2 can be stably set on the bracket 3-3), the drive motor 3-2 is connected to the roller 3-1, the roller 3-1 is set on the platform 2, the roller 3-1 is in contact with the platform 2, the drive electrode drives the roller 3-1 to rotate, and then the roller 3-1 drives the connecting bridge 7 and the working bridge 4 to move along the platform 2 with the center of the sedimentation tank 1 as the axis. In addition to using this transmission device 3, other transmission devices 3 in the prior art can also be used, as long as they can play the role of driving the working bridge 4 and the connecting bridge 7 to rotate with the center of the sedimentation tank 1.

[0032] In the utility model, the transmission device 3 is installed under the connecting bridge 7, the inner edge of the walkway 2 of the sedimentation tank 1 is provided with an inner guardrail 5, and the outer edge of the walkway 2 is provided with an outer guardrail 6, so that the walkway 2 forms a safe and closed corridor, which can prevent drowning and fall from heights, improve the safety factor, and also improve the safety of operators working at night.

[0033] The utility model provides a radial flow sedimentation tank 1 safety protection device, by setting a connecting bridge 7, setting a transmission device 3 under the connecting bridge 7, and transforming the working bridge 4, while ensuring the structural strength of the equipment, and being able to operate normally and stably, the device has a simple structure and is easy to operate, and by setting guardrails on the inner and outer edges of the walkway 2, the safety performance is greatly improved, the economic investment is small, and it has good social benefits, and the personal safety of the operator is guaranteed, and the occurrence of safety accidents is avoided as much as possible. The protection device of the present invention has a simple structure and is easy to operate, and can guarantee the safety of the operator to the greatest extent, avoid the situation of drowning accidents caused by slipping or accidentally falling into the sedimentation tank 1, and avoid falling from a high place in the sedimentation tank 1, thereby improving the overall safety performance.

Claims

1. A radial flow sedimentation tank safety protection device, comprising a working bridge (4), a transmission device (3) and a walkway (2), characterized in that: An inner guardrail (5) is arranged on the walkway (2) near the inner edge of the sedimentation tank (1), and an outer guardrail (6) is arranged on the outer edge away from the sedimentation tank (1); a connecting bridge (7) is arranged on the top of the inner guardrail (5), one end of the connecting bridge (7) is connected to the working bridge (4), and the other end is arranged above the walkway (2), with a gap between the connecting bridge (7) and the walkway (2); the connecting bridge (7) is connected to the transmission device (3), and the transmission device (3) is arranged on the walkway (2).

2. A radial flow sedimentation tank safety protection device according to claim 1, characterized in that: Protective guardrails (8) are arranged on both sides of the connecting bridge (7).

3. A radial flow sedimentation tank safety protection device according to claim 1, characterized in that: The connecting bridge (7) is an arch bridge or a trapezoidal bridge.

4. A radial flow sedimentation tank safety protection device according to claim 1 or 3, characterized in that: Steps are arranged at both ends of the bridge deck of the connecting bridge (7).

5. A radial flow sedimentation tank safety protection device according to claim 1, characterized in that: The distance between the transmission device (3) and the outer guardrail (6) is less than the distance between the connecting bridge (7) and the outer guardrail (6).

6. A radial flow sedimentation tank safety protection device according to claim 1, characterized in that: Warning signs are provided on the inner guardrail (5) and the outer guardrail (6).

7. A radial flow sedimentation tank safety protection device according to claim 1, characterized in that: There is a gap between the connecting bridge (7) and the inner guardrail (5), and there is a gap between the transmission device (3) and the inner guardrail (5).

8. A radial flow sedimentation tank safety protection device according to claim 1, characterized in that: The working bridge (4) and the connecting bridge (7) are connected by welding.

9. A radial flow sedimentation tank safety protection device according to claim 1, characterized in that: The transmission device (3) comprises a bracket (3-3), a driving motor (3-2) and a roller (3-1).

10. A radial flow sedimentation tank safety protection device according to claim 9, characterized in that: The bottom of the connecting bridge (7) is connected to a bracket (3-3), the bracket (3-3) is movably connected to a roller (3-1), the bracket (3-3) is connected to a drive motor (3-2), the drive motor (3-2) is connected to the roller (3-1), and the roller (3-1) is arranged on the walking platform (2).

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