Siphon pipeline for sludge discharge travelling crane of settling pond in waterworks

Abstract

According to the siphon pipeline for the sludge discharge travelling crane of the settling pond in the waterworks, the single siphon main pipeline is combined with the vacuum forming device, so that the system structure is simplified, and the drainage efficiency is improved. By removing the one-way valve, accumulated water in the pipeline is automatically drained, the icing problem in the low-temperature environment is effectively prevented, and the equipment maintenance cost is greatly reduced. Due to the design of the inverted-U-shaped fluid channel, the stability and reliability of the system are enhanced, and the continuous and stable siphon effect is ensured. The protective cover outside the submersible pump effectively prevents key equipment from being eroded by the environment. According to the improved scheme, the structure is simplified, accumulated water can be automatically drained, the submersible pump is prevented from falling off, the problems that the submersible pump cannot pump water, siphon loses efficacy and sludge discharging is not smooth due to pipeline freezing in low-temperature weather are effectively solved, and the operation efficiency and safety of the sludge discharging travelling crane for the settling pond of the waterworks are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the field of environmental protection equipment, in particular to a siphon pipe used for a mud discharge vehicle in a sedimentation tank of a water plant. Background Art

[0002] In waterworks, sedimentation tank sludge removal vehicles are key pieces of sludge treatment equipment. Frequent cold snaps, particularly in winter, pose a significant challenge to their operation. Existing sedimentation tank sludge removal vehicles primarily utilize a pump-to-self-priming mode. This system uses an ejector at the outlet of a submersible pump to create negative pressure within the self-priming pipe, creating a siphon and discharging sludge from the bottom of the sedimentation tank. However, in actual operation, particularly in low-temperature environments, this sludge removal system presents significant issues and drawbacks.

[0003] like Figure 1 As shown, traditional mud-discharging crane designs often employ a "one-in-use, one-in-standby" submersible pump configuration, meaning two submersible pumps are installed: one for normal operation and the other as a backup. This design theoretically ensures the reliability of the mud-discharging system, but in practice, sedimentation tanks often contain chemicals generated during the dosing process. These chemicals can corrode the submersible pumps and their accessories, especially when both submersible pumps are submerged simultaneously. This corrosion is particularly pronounced, shortening the submersible pumps' service life.

[0004] To ensure effective siphoning, both submersible pumps were equipped with check valves at their outlets. However, this design presented a new problem. When the pumps switched to self-priming mode, the check valves prevented the water from draining naturally, causing it to accumulate. During cold snaps, this accumulated water easily froze, rendering the submersible pumps inoperable and preventing siphoning. Consequently, the sludge removal vehicles were unable to perform their sludge removal tasks, severely impacting the water plant's sludge treatment efficiency and water quality.

[0005] Therefore, the stability and reliability of the current sedimentation tank sludge discharge vehicle in low temperature environments need to be improved urgently, especially in solving the problem of failure caused by water accumulation and freezing in the submersible pump suction pipe. An innovative solution is urgently needed to ensure the normal operation of the water plant in cold weather. Utility Model Content

[0006] The purpose of the utility model is to improve the siphon pipe system of the sludge discharge vehicle in the sedimentation tank of the water plant, and solve the problem that the submersible pump cannot work normally due to the easy freezing of water in the pump suction pipe in a low temperature environment.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A siphon pipe for a sludge discharge vehicle in a sedimentation tank of a waterworks, comprising:

[0009] Submersible pump, installed in the sedimentation tank, draws mud-water mixture from the sedimentation tank by forming a siphon through pumping;

[0010] A siphon main pipe having a water inlet and a water outlet, wherein the water inlet is connected to the output end of the submersible pump through a branch pipe, and the water outlet is connected to a predetermined discharge system or a collection container through an emptying pipe and a valve;

[0011] A vacuum forming device is provided on or connected to the siphon main pipe, and is used to form and maintain negative pressure inside the siphon main pipe, so as to utilize the siphon effect to transfer the mud-water mixture from the water inlet to the water outlet and discharge it;

[0012] Among them, the siphon main pipe and branch pipes together form an inverted U-shaped fluid channel; when the submersible pump is turned off and the conversion process from pump suction to self-priming is completed, the water in the siphon main pipe and branch pipes can be automatically drained to prevent water accumulation and freezing in the pipes in low temperature environments.

[0013] In a preferred embodiment, a ball valve is provided at the position where the vacuum forming device is connected to the siphon main pipe, for controlling the opening and closing of the fluid channel between the vacuum forming device and the siphon main pipe.

[0014] In a preferred embodiment, the vacuum forming device includes a vacuum pump and a vacuum storage tank. The vacuum pump is used to form negative pressure in the siphon main pipeline, and the vacuum storage tank is used to maintain the negative pressure state in the pipeline after the submersible pump is turned off, thereby ensuring the continuous and stable siphon effect.

[0015] In a more preferred embodiment, the vacuum storage tank is provided with a pressure sensor to monitor and adjust the negative pressure level in real time.

[0016] In a more preferred embodiment, the vacuum pump and the ball valve are respectively connected to a control system, and the control system controls the start and stop of the vacuum pump and the ball valve.

[0017] In a preferred embodiment, a protective cover is installed on the submersible pump to prevent the submersible pump from falling to the bottom of the sedimentation tank.

[0018] In a preferred embodiment, the siphon pipe further includes a temperature monitoring device, which is arranged on the siphon main pipe or branch pipe and is used to monitor the temperature in the pipe in real time and issue an alarm when the temperature is lower than a preset threshold.

[0019] In a preferred embodiment, the siphon pipe further includes a flow sensor, which is arranged on the siphon main pipe and is used to monitor the fluid flow in the pipe in real time.

[0020] In a preferred embodiment, the siphon pipe further includes a control system, which is connected to the submersible pump and the vacuum forming device to control the start and stop of the submersible pump and the operation of the vacuum forming device.

[0021] In a more preferred embodiment, the control system includes a central processing unit, and the central processing unit is connected to the submersible pump and the vacuum forming device through input and output ports, respectively.

[0022] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0023] The technical solution of the present utility model has made structural improvements to the siphon pipes of traditional waterworks sedimentation tank sludge discharge vehicles. The use of a single siphon main pipe combined with a vacuum forming device not only simplifies the system structure, but also improves the drainage efficiency. By removing the one-way valve, the automatic drainage of accumulated water in the pipe is achieved, effectively preventing the problem of freezing in low-temperature environments and greatly reducing the cost of equipment maintenance. The design of the inverted U-shaped fluid channel enhances the stability and reliability of the system and ensures the continuous stability of the siphon effect. The protective cover outside the submersible pump effectively prevents key equipment from being corroded by the environment. This improvement solution not only simplifies the structure, but also automatically drains accumulated water and prevents the submersible pump from falling off. It effectively solves the problems of the submersible pump being unable to pump water, siphon failure, and poor sludge discharge caused by pipe freezing in low-temperature weather, and significantly improves the operating efficiency and safety of the waterworks sedimentation tank sludge discharge vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the structure of a traditional siphon pipe used for sludge discharge from a sedimentation tank in a waterworks.

[0026] Figure 2 The utility model is a structural schematic diagram of a siphon pipe used for a sludge discharge vehicle in a sedimentation tank of a waterworks.

[0027] Legend:

[0028] 1. Submersible pump; 2. Check valve; 31. Flange A; 32. Flange B; 33. Flange C; 4. Ball valve; 5. Vacuum forming device; 6. Protective cover; 7. Siphon main pipe; 8. Branch pipe; 9. Water ejector; 10. Solenoid valve. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and effect of the present invention more clear and explicit, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] It should be noted that the terms "first," "second," and the like in the specification and claims of the present invention and the accompanying drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable under appropriate circumstances. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a system, product, or device comprising a series of units is not necessarily limited to those explicitly listed, but may include other units not explicitly listed or inherent to these products or devices.

[0031] like Figure 1 As shown, the traditional waterworks sedimentation tank sludge discharge vehicle adopts the method of pump suction to self-priming to perform the sludge discharge operation, that is, the water ejector 9 at the outlet pipe of the submersible pump is used to generate negative pressure in the self-priming pipe, thereby forming a siphon to discharge the sludge at the bottom of the sedimentation tank. In order to achieve this function, the system needs to install two submersible pumps 1 (one for use and one for backup, to ensure that when one pump fails, the other can immediately take over the work), and install a one-way valve 2 at the outlet of the submersible pump 1. The function of the one-way valve 2 is to ensure that the fluid can only flow in one direction, prevent backflow, and help to produce a siphon effect in the system. Multiple pipes in the system are connected by flanges, such as Figure 1 As shown, flange A 31, flange B 32 and flange C 33 are included. These flanges ensure a tight connection between the pipes, prevent fluid leakage, and also facilitate disassembly and maintenance of the pipes.

[0032] However, this traditional approach has the following problems:

[0033] (1) Waste of resources: Only one submersible pump 1 is required for daily operation, but the traditional system requires the installation of two submersible pumps 1, resulting in waste of resources.

[0034] (2) Corrosion and freezing: Due to the dosing process in the sedimentation tank, these chemicals are prone to corroding the submersible pump 1 and the pipeline. In addition, in cold weather, the accumulated water in the pumping pipeline is prone to freezing, causing the submersible pump 1 to be unable to pump water, and thus unable to produce a siphon phenomenon, making it impossible for the mud discharge vehicle to discharge mud normally.

[0035] (3) High maintenance cost: The presence of the one-way valve 2 prevents the water in the pipeline from draining away by itself, and the water accumulates in the pipeline for a long time, which increases the cost of maintenance and cleaning.

[0036] In order to solve these problems, this embodiment improves the siphon pipe in the mud discharge vehicle of the water plant sedimentation tank, especially optimizes the problem that the accumulated water in the pump suction pipe is easy to freeze in a low temperature environment, causing the submersible pump 1 to fail to work normally.

[0037] See Figure 2 As shown, this embodiment discloses a siphon pipe for a sludge discharge vehicle in a sedimentation tank of a waterworks, comprising: a submersible pump 1, a branch pipe 8, a siphon main pipe 7 and a vacuum forming device 5.

[0038] The submersible pump 1 is arranged in the sedimentation tank, and its output end is connected to the water inlet of the siphon main pipe 7. The main function of the submersible pump 1 is to generate a siphon effect and transport the mud-water mixture into the siphon main pipe 7.

[0039] The main siphon pipe 7 has an inlet and an outlet. The inlet is connected to the output of the submersible pump 1 via a branch pipe 8 (also called a pump suction pipe). The outlet is connected to a predetermined discharge system or collection container via a drain pipe and valve. The main siphon pipe 7 and the branch pipe 8 together form an inverted U-shaped fluid channel, which uses the siphon effect to transfer the mud-water mixture from the inlet to the outlet.

[0040] The vacuum-generating device 5 is disposed on or connected to the siphon main pipe 7 and is used to create and maintain a negative pressure within the siphon main pipe 7. In this embodiment, the vacuum-generating device 5 comprises a vacuum pump and a vacuum storage tank. When the vacuum pump is activated, it creates a negative pressure within the siphon main pipe 7. The vacuum storage tank is used to maintain the negative pressure within the pipe after the submersible pump 1 is shut down, ensuring a continuous and stable siphon effect. A solenoid valve 10 is also provided on one side of the vacuum-generating device 5 to control siphon failures.

[0041] In a preferred embodiment, a ball valve 4 may be further provided at the position where the vacuum forming device 5 communicates with the siphon main pipe 7 to control the opening and closing of the fluid passage between the vacuum forming device 5 and the siphon main pipe 7. When the vacuum forming device 5 needs to be inspected or maintained, the ball valve 4 may be closed to cut off the fluid passage.

[0042] In a preferred embodiment, a protective cover 6 can be added to the submersible pump 1 to prevent the submersible pump 1 from falling to the bottom of the sedimentation tank due to corrosion of the fasteners caused by the environment. The protective cover 6 can effectively fix the submersible pump 1 in place, preventing it from falling due to water impact or sediment accumulation, thereby reducing subsequent maintenance, repair, and salvage costs.

[0043] In a preferred embodiment, to monitor the temperature in the siphon pipe in real time and prevent water from freezing in the pipe in low-temperature environments, a temperature monitoring device can be installed on the siphon main pipe 7 or the branch pipe 8. When the temperature falls below a preset threshold, the temperature monitoring device will sound an alarm, prompting the operator to take appropriate measures.

[0044] In a preferred embodiment, a pressure sensor can be installed on the vacuum storage tank of the vacuum-generating device 5 to monitor and adjust the negative pressure level in real time. Furthermore, a flow sensor can be installed on the main siphon pipe 7 to monitor the fluid flow rate within the pipe in real time. This data not only helps evaluate the operating status of the system but also provides an important basis for optimizing operating parameters and troubleshooting.

[0045] The siphon pipe of this embodiment may also include a control system, which is connected to the submersible pump 1, the vacuum-generating device 5, and other auxiliary equipment (such as the ball valve 4, the temperature monitoring device, the pressure sensor, and the flow sensor). Through the central processing unit, the control system accurately controls key parameters such as the start and stop of the submersible pump 1 and the operating status of the vacuum-generating device 5. Furthermore, the control system has fault detection and alarm functions, capable of monitoring the system's operating status in real time and issuing timely alarms when faults occur.

[0046] The working principle of this utility model is as follows:

[0047] When the submersible pump 1 is started, the branch pipes 8 and the siphon main pipe 7 start working, sucking in water from the sedimentation tank. As water is continuously extracted, the vacuum forming device 5 starts working. The vacuum pump in the vacuum forming device 5 starts running, and the air in the siphon main pipe 7 is discharged through its exhaust port, thereby forming a negative pressure in the pipe. When the negative pressure reaches a certain level, a siphon effect is formed, and the mud-water mixture begins to automatically flow through the branch pipe 8 to the mud outlet. Once the siphon is formed, the submersible pump 1 can be turned off. At this time, the vacuum forming device 5 always maintains a vacuum environment to ensure that the mud and water in its branch pipes 8 are automatically discharged. When the vacuum forming device 5 stops working, the mud and water mixture in the siphon main pipe 7, the branch pipe 8 and other branch pipes will be discharged automatically due to gravity, thereby ensuring that there is no residual water inside the branch pipe 8, realizing the automatic drainage of the water in the branch pipe 8, and can effectively avoid problems caused by the freezing of accumulated water. In addition, since the water in the branch pipe 8 is discharged from the submersible pump 1, it causes a certain pressure on the fixation of the submersible pump 1. Therefore, a protective cover 6 is added to the submersible pump 1 to prevent the submersible pump 1 from falling to the bottom of the sedimentation tank. This not only improves the safety of the equipment, but also facilitates the daily inspection and maintenance of personnel.

[0048] In summary, the technical solution of this application makes the following key improvements to the traditional siphon pipe:

[0049] Pipeline Optimization: The original two pumping pipelines (i.e., branch pipelines 8 in this embodiment) are replaced with a single one. Only one submersible pump 1 is required for the pumping process. This not only reduces the number and loss of submersible pumps 1, but also simplifies the system structure, reducing production costs and consumption. Furthermore, the reduced number of pipelines also reduces corrosion issues that may occur during the dosing process, achieving energy savings and consumption reductions.

[0050] Removal of the one-way valve: With a single pumping line, the one-way valve 2 is eliminated. This allows the water in the pumping line to drain automatically after the transition from pumping to self-priming, effectively preventing water accumulation in the line, further reducing the risk of freezing and lowering the frequency and cost of equipment maintenance.

[0051] Adding a protective cover: Adding a protective cover 6 to submersible pump 1 effectively protects against environmental corrosion on its fasteners, significantly reducing the risk of it falling to the bottom of the sedimentation tank. This not only protects submersible pump 1 and other equipment from damage, but also reduces repair and salvage costs, ensuring the long-term stability of the system.

[0052] Through the above improvements, this application not only simplifies the system structure, but also realizes the automatic drainage of accumulated water in the pipeline after the pump suction is switched to self-priming, effectively solving the problems of submersible pumps unable to pump water, siphon failure and poor mud discharge due to pipeline freezing in low temperature environments.

[0053] The above detailed description of the specific embodiments of the present invention serves only as examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions made to the above embodiments are also within the scope of the present invention. Therefore, any equivalent changes and modifications made without departing from the spirit and scope of the present invention are intended to be encompassed within the scope of the present invention.

Claims

1. A siphon pipe for a sludge discharge vehicle in a waterworks sedimentation tank, characterized in that: include: Submersible pump, installed in the sedimentation tank, creates a siphon through pumping to extract the mud-water mixture from the sedimentation tank; A siphon main pipe having a water inlet and a water outlet, wherein the water inlet is connected to the output end of the submersible pump through a branch pipe, and the water outlet is connected to a predetermined discharge system or a collection container through an emptying pipe and a valve; A vacuum forming device is provided on or connected to the siphon main pipe, and is used to form and maintain negative pressure inside the siphon main pipe, so as to utilize the siphon effect to transfer the mud-water mixture from the water inlet to the water outlet and discharge it; Among them, the siphon main pipe and branch pipes together form an inverted U-shaped fluid channel; when the submersible pump is turned off and the conversion process from pump suction to self-priming is completed, the water in the siphon main pipe and branch pipes can be automatically drained to prevent water accumulation and freezing in the pipes in low temperature environments.

2. A siphon pipe for a sludge discharge vehicle in a waterworks sedimentation tank according to claim 1, characterized in that: A ball valve is provided at the position where the vacuum forming device is connected to the siphon main pipe, for controlling the opening and closing of the fluid channel between the vacuum forming device and the siphon main pipe.

3. The siphon pipe for a sludge discharge vehicle in a waterworks sedimentation tank according to claim 1, characterized in that: The vacuum forming device includes a vacuum pump and a vacuum storage tank. The vacuum pump is used to form negative pressure in the siphon main pipeline, and the vacuum storage tank is used to maintain the negative pressure state in the pipeline after the submersible pump is turned off to ensure the continuous and stable siphon effect.

4. A siphon pipe for a sludge discharge vehicle in a waterworks sedimentation tank according to claim 3, characterized in that: The vacuum storage tank is provided with a pressure sensor to monitor and adjust the negative pressure level in real time.

5. The siphon pipe for a sludge discharge vehicle in a waterworks sedimentation tank according to claim 1, characterized in that: The submersible pump is provided with a protective cover to prevent the submersible pump from falling to the bottom of the sedimentation tank.

6. The siphon pipe for a sludge discharge vehicle in a waterworks sedimentation tank according to claim 1, characterized in that: The siphon pipe also includes a temperature monitoring device, which is arranged on the siphon main pipe or branch pipe and is used to monitor the temperature in the pipe in real time and issue an alarm when the temperature is lower than a preset threshold.

7. The siphon pipe for a sludge discharge vehicle in a waterworks sedimentation tank according to claim 1, characterized in that: The siphon pipeline further includes a flow sensor, which is arranged on the siphon main pipeline and is used to monitor the fluid flow in the pipeline in real time.

8. The siphon pipe for a sludge discharge vehicle in a waterworks sedimentation tank according to claim 1, characterized in that: The siphon pipeline further includes a control system, which is connected to the submersible pump and the vacuum forming device to control the start and stop of the submersible pump and the operation of the vacuum forming device.

9. The siphon pipe for a sludge discharge vehicle in a waterworks sedimentation tank according to claim 8, characterized in that: The control system includes a central processing unit, and the central processing unit is connected to the submersible pump and the vacuum forming device through input and output ports respectively.

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