Constant water level discharge system of urban wastewater collecting well

Abstract

The utility model relates to an urban wastewater collecting well constant water level discharge system which comprises a wastewater collecting well, a wastewater channel, a drainage channel, a drainage pump set and a water level monitoring assembly. According to the technical scheme, the water level monitoring assembly comprises a Z-direction linear module longitudinally arranged along the well wall of the waste water collecting well, a sliding base connected with the Z-direction linear module, a turnover mechanism arranged on the sliding base and an ultrasonic water level gauge arranged on the turnover mechanism, a support is arranged at an inlet of the drainage channel, and a waterproof motor is arranged on the support. A crank is fixed to the tail end of an output shaft of the waterproof motor, the tail end of the crank is connected with an anti-blocking flexible steel cable, the anti-blocking flexible steel cable is located on the inner side of an inlet of the drainage channel, and a flow meter is arranged in the drainage channel. The system monitors the water level change in real time, facilitates variable frequency control of the drainage pump motor, and timely discovers and treats the blockage condition of the drainage channel, thereby further reducing the energy consumption of the drainage pump group and reducing the power supply burden.

Description

Technical Field

[0001] The utility model relates to the technical field of urban wastewater discharge, in particular to an urban wastewater collection well constant water level discharge system. Background Art

[0002] The urban drainage system is a system facility for treating and removing various urban wastewaters, and is an important part of urban public facilities. The capacity of the urban drainage system is reflected in whether it can quickly drain the sewage and rainwater of the entire city and whether it can respond to sudden meteorological events. In order to ensure the rapid discharge of sewage and rainwater, under normal circumstances, the urban drainage pump station receives the water level information in the urban sewage collection well in real time. When it is higher than the set water level, the motor driver starts the water pump motor, thereby starting the various drainage pump units of the drainage pump station for rapid drainage. When the liquid level is lower than the set water level, the various drainage pump units of the drainage pump station stop and standby. When the water level signal fluctuates frequently, on the one hand, it wastes electricity and causes a burden on the power grid, and on the other hand, it is easy to cause damage to the drainage equipment.

[0003] Based on this, CN104060675A provides a constant water level discharge system for a city wastewater collection well, which includes: a city wastewater collection well, with an upper limit water level sensor and a lower limit water level sensor on the top; a wastewater channel, which is connected to the city wastewater collection well; a drainage pump, whose water inlet is connected to the wastewater channel; a water supply pressure well, which is connected to the drainage pump; a water supply channel, whose water inlet is connected to the water supply pressure well; a high-level water outlet well, which is connected to the water outlet of the water supply channel; the water outlet of the high-level water outlet well transports sewage to a sewage treatment pool; a control module and a drainage pump motor, the control module receives the wastewater level detected by the upper limit water level sensor and the lower limit water level sensor, and performs frequency conversion control on the drainage pump motor according to the wastewater water level, controls the drainage flow of the drainage pump, and stabilizes the water level of the wastewater collection well within a set value range, avoiding large fluctuations in the water level of the wastewater collection well and frequent starting of the drainage pump motor. However, the following problems still exist: 1. The upper limit water level sensor and the lower limit water level sensor can only detect the upper limit water level and the lower limit water level, and cannot realize real-time monitoring of the water level, which is not conducive to monitoring the water level rising speed, reflecting the water level rising trend, and thus not conducive to frequency conversion control of the drainage pump motor; 2. The upper limit water level sensor and the lower limit water level sensor are installed inside the wastewater collection well, which is inconvenient for maintenance and repair; 3. When the drainage channel is blocked, the energy consumption of the drainage pump motor increases greatly, and this situation cannot be discovered and handled in time. Utility Model Content

[0004] The purpose of the present utility model is to provide a uniformly-level drainage system for urban wastewater sump with reasonable structure and reliable use to solve the above problems, which can monitor the water level change in real time, is beneficial to the frequency conversion control of the drainage pump motor. At the same time, it can timely detect and handle the blockage of the drainage channel, thereby further reducing the energy consumption of the drainage pump group and the burden of power supply.

[0005] The technical solution of the present utility model is as follows:

[0006] A uniformly-level drainage system for urban wastewater sump, comprising a wastewater sump, a wastewater channel and a drainage channel communicated with the wastewater sump, a drainage pump group communicated with the drainage channel, and a water level monitoring component arranged on the upper part of the wastewater sump. The technical key points are: the water level monitoring component includes a Z-direction linear module longitudinally arranged along the well wall of the wastewater sump, a sliding seat connected with the Z-direction linear module, a turning mechanism arranged on the sliding seat, and an ultrasonic water level gauge arranged on the turning mechanism. The detection port of the ultrasonic water level gauge faces the liquid level in the wastewater sump. A bracket is arranged at the entrance of the drainage channel, a waterproof motor is arranged on the bracket, a crank is fixed at the end of the output shaft of the waterproof motor, and an anti-blocking flexible steel cable is connected to the end of the crank. The anti-blocking flexible steel cable is located inside the entrance of the drainage channel, and a flowmeter is arranged in the drainage channel.

[0007] For the above-mentioned uniformly-level drainage system for urban wastewater sump, the turning mechanism includes an upper connecting ear and a lower connecting ear fixed at the upper and lower ends of the sliding seat, a cantilever rod hinged with the upper connecting ear, a support arm connected to the lower surface of the cantilever rod, a turning cylinder hinged between the lower connecting ear and the lower end of the support arm, and a rotatable joint arranged at the end of the cantilever rod. The ultrasonic water level gauge is fixed on the rotatable joint.

[0008] For the above-mentioned uniformly-level drainage system for urban wastewater sump, a limit block is arranged at the lower end of the Z-direction linear module.

[0009] For the above-mentioned uniformly-level drainage system for urban wastewater sump, the center line of the output shaft of the waterproof motor coincides with the center line of the drainage channel.

[0010] The beneficial effects of the present utility model are as follows:

[0011] 1. By using the ultrasonic water level gauge to monitor the water level change in real time, it is beneficial to the frequency conversion control of the drainage pump motor and provides data support for the frequency conversion control of the drainage pump group;

[0012] 2. The Z-direction linear module is used to lower the turning mechanism and the ultrasonic water level gauge, which is convenient for adjusting the longitudinal position of the ultrasonic water level gauge and facilitating the test detection accuracy. At the same time, the turning mechanism is used to install the ultrasonic water level gauge. When maintenance and repair are needed, the position of the ultrasonic water level gauge can be adjusted by the turning mechanism, extended out of the wellhead and close to the upper end of the well wall, which is convenient for the staff to disassemble and install, and has high work installation performance.

[0013] 3. Monitor the drainage flow rate in the drainage channel using a flow meter. When the ultrasonic water level gauge detects that the water level is rising too fast while the flow meter detects a small drainage flow rate, it indicates that there is a blockage at the entrance of the drainage channel. This facilitates starting the waterproof motor to drive the rotation of the crank and the anti-blocking flexible steel cable. During the rotation of the anti-blocking flexible steel cable, the blockage at the entrance of the drainage channel is resolved and promptly handled, avoiding the super-power operation of the drainage pump group for rapid drainage, reducing the energy consumption of the drainage pump group, and alleviating the burden on the power supply. Description of the Drawings

[0014] Figure 1 is a schematic structural view of the present utility model;

[0015] Figure 2 is a schematic view of the usage state of the present utility model.

[0016] In the figure: 1. Ultrasonic water level gauge, 2. Rotatable joint, 3. Cantilever rod, 4. Support arm, 5. Upper connecting ear, 6. Z-direction linear module, 7. Slide seat, 8. Lower connecting ear, 9. Limit block, 10. Tipping cylinder, 11. Wastewater sump, 12. Drainage pump group, 13. Drainage channel, 14. Flow meter, 15. Anti-blocking flexible steel cable, 16. Crank, 17. Bracket, 18. Waterproof motor, 19. Wastewater channel, 20. Upper cover. Detailed Embodiment

[0017] The present utility model will be described in detail according to the accompanying drawings of the specification.

[0018] As Figure 1 、 Figure 2 shown, this urban wastewater sump constant water level discharge system includes a wastewater sump 11, a wastewater channel 19 and a drainage channel 13 communicating with the wastewater sump 11, a drainage pump group 12 communicating with the drainage channel 13, and a water level monitoring component provided at the upper part of the wastewater sump 11.

[0019] Among them, the water level monitoring component includes a Z-direction linear module 6 longitudinally arranged along the well wall of the wastewater sump 11, a slide seat 7 connected to the Z-direction linear module 6, a tipping mechanism provided on the slide seat 7, and an ultrasonic water level gauge 1 provided on the tipping mechanism. In this embodiment, the tipping mechanism includes an upper connecting ear 5 and a lower connecting ear 8 fixed to the upper and lower ends of the slide seat 7, a cantilever rod 3 hinged to the upper connecting ear 5, a support arm 4 connected to the lower surface of the cantilever rod 3, a tipping cylinder 10 hinged between the lower connecting ear 8 and the lower end of the support arm 4, and a rotatable joint 2 provided at the end of the cantilever rod 3. The ultrasonic water level gauge 1 is fixed to the rotatable joint 2. A limit block 9 is provided at the lower end of the Z-direction linear module 6.

[0020] The detection port of the ultrasonic water level gauge 1 faces the liquid level in the wastewater sump 11. A bracket 17 is provided at the inlet of the drainage channel 13. A waterproof motor 18 is provided on the bracket 17. The end of the output shaft of the waterproof motor 18 is fixed with a crank 16. The end of the crank 16 is connected with an anti-blocking flexible steel cable 15. The anti-blocking flexible steel cable 15 is located inside the inlet of the drainage channel 13. A flow meter 14 is provided in the drainage channel 13. The center line of the output shaft of the waterproof motor 18 coincides with the center line of the drainage channel 13.

[0021] Working principle:

[0022] 1. During use, the ultrasonic water level gauge 1 is used to monitor the water level change in the wastewater sump 11 in real time, so as to use it to frequency-convert and control the drainage pump motor of the drainage pump group 12 to meet the energy-saving requirements.

[0023] 2. The flow meter 14 is used to monitor the drainage flow in the drainage channel 13. When the ultrasonic water level gauge 1 detects that the water level rises too fast, and the flow meter 13 detects that the drainage flow does not increase, it indicates that there is a blockage at the inlet of the drainage channel 13. Start the waterproof motor 18 to drive the crank 16 and the anti-blocking flexible steel cable 15 to rotate, and use the disturbance of the anti-blocking flexible steel cable 15 to break the blockage. After the drainage flow returns to normal, the waterproof motor 18 stops.

[0024] 3. When the ultrasonic water level gauge 1 needs to be repaired, open the upper cover 20 of the wastewater sump 11. The Z-axis linear module 6 drives the flipping mechanism to rise, and then start the flipping cylinder 10 to push the cantilever rod 3 to rotate 90 degrees around the first connecting ear 5, so that the end of the cantilever rod 3 extends out of the upper edge of the wastewater sump 11. The staff can then manually operate the rotatable joint 2 to make the ultrasonic water level gauge 1 face the edge side of the wastewater sump 11, or directly remove the rotatable joint 2 from the cantilever rod 3 for convenient maintenance or repair.

[0025] The above has described the embodiments of the present invention in detail, but the above content is only the preferred embodiments of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equal changes and improvements made within the scope of the creation of the present invention shall still fall within the scope covered by this patent.

Claims

1. A constant water level discharge system for a municipal wastewater collection well, comprising a wastewater collection well, a wastewater channel and a drainage channel connected to the wastewater collection well, a drainage pump group connected to the drainage channel, and a water level monitoring component arranged on the upper part of the wastewater collection well, characterized in that: The water level monitoring component includes a Z-axis linear module arranged longitudinally along the wall of the wastewater collection well, a slide connected to the Z-axis linear module, a flip mechanism on the slide, and an ultrasonic water level meter on the flip mechanism, wherein the detection port of the ultrasonic water level meter faces the liquid surface in the wastewater collection well, a bracket is provided at the entrance of the drainage channel, a waterproof motor is provided on the bracket, a crank is fixed at the end of the output shaft of the waterproof motor, an anti-clogging flexible steel cable is connected to the end of the crank, the anti-clogging flexible steel cable is located on the inner side of the drainage channel entrance, and a flow meter is provided in the drainage channel.

2. The urban wastewater collection well constant water level discharge system according to claim 1, characterized in that: The flipping mechanism includes an upper connecting ear and a lower connecting ear fixed on the lower end of the sliding seat, a cantilever rod hinged to the upper connecting ear, a support arm connected to the lower surface of the cantilever rod, a flipping cylinder hinged between the lower connecting ear and the lower end of the support arm, and a rotatable joint arranged at the end of the cantilever rod, and the ultrasonic water level meter is fixed on the rotatable joint.

3. The urban wastewater collection well constant water level discharge system according to claim 1 is characterized by: A limit block is provided at the lower end of the Z-direction linear module.

4. The urban wastewater collection well constant water level discharge system according to claim 1, characterized in that: The center line of the output shaft of the waterproof motor coincides with the center line of the drainage channel.

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