Sewage suction pipeline backwashing device and sewage discharge device

Abstract

The application provides a sewage suction pipe reverse flushing device and a sewage discharge device, and relates to the technical field of ship sewage treatment. The sewage suction pipe reverse flushing device comprises a flushing pipe. The first end of the flushing pipe is connected with the side wall of the first end of the sewage suction pipe. The second end of the flushing pipe is used for introducing compressed air to flush the end of the sewage suction pipe by the airflow of the compressed air. The first end of the sewage suction pipe refers to the end connected with the sewage collection cabin. The sewage discharge device applying the sewage suction pipe reverse flushing device can improve the sewage discharge speed.

Description

Technical Field

[0001] This application relates to the field of ship sewage treatment technology, and in particular to a sewage suction pipe backwashing device and a sewage discharge device. Background Technology

[0002] The treatment process for domestic sewage generated on ships is usually as follows: First, the sewage undergoes a series of treatments to meet the discharge standards. The sewage that meets the discharge standards is then collected in the sewage collection tank. Finally, the sewage in the sewage collection tank is discharged to the outside of the ship through the sewage suction pipe, or the sewage suction pipe is connected to the receiving facility on shore for discharge.

[0003] However, with prolonged use of the sewage suction pipe, impurities in the sewage accumulate in the pipe, leading to a decrease in sewage discharge speed and even blockage. Summary of the Invention

[0004] In view of this, this application provides a sewage suction pipe backwashing device and a sewage discharge device, which can solve the problem of reduced discharge speed or even blockage of the current sewage suction pipe.

[0005] The present application is described below from multiple aspects, and the implementation methods and beneficial effects of these aspects can be referred to each other.

[0006] In a first aspect, this application provides a backwashing device for a sewage suction port pipeline, including a flushing pipeline. A first end of the flushing pipeline is connected to the side wall of the sewage suction port pipeline, and a second end of the flushing pipeline is used to introduce compressed air to flush the sewage suction port pipeline by the impact of the compressed air flow. The first end of the sewage suction port pipeline extends into a sewage collection chamber, so that impurities in the sewage suction port pipeline are blown into the sewage collection chamber by the impact of the compressed air flow.

[0007] According to this solution, by installing a flushing pipe on the side wall of the sewage suction pipe as an interface for compressed air input, impurities can be removed without disassembling the pipe, using the impact force of the high-pressure airflow. This cleans the dirt adhering to the inner wall of the sewage suction pipe and the solid matter deposited at the bends, preventing the accumulation of impurities in the sewage suction pipe. Consequently, during the sewage discharge stage, impurities in the sewage suction pipe can prevent blockage of the discharge pump's suction port, which could lead to poor suction or failure to start the discharge pump. This increases the sewage discharge speed and prevents blockages.

[0008] In one possible implementation of the first aspect above, the sewage suction pipe backwashing device further includes an air compression system connected to the second end of the flushing pipe for generating compressed air and delivering the compressed air to the flushing pipe.

[0009] According to this plan, compressed air is reliably provided for the flushing process.

[0010] In one possible implementation of the first aspect above, the sewage suction pipe backwashing device further includes a one-way valve, which is disposed on the flushing pipe to prevent sewage in the sewage suction pipe from flowing into the air compression system.

[0011] According to this solution, the one-way valve can effectively prevent sewage from backflowing or flowing into the air compression system, ensuring the safe and reliable operation of the air compression system.

[0012] In one possible implementation of the first aspect mentioned above, the flushing pipe and the sewage suction pipe are detachably connected.

[0013] According to the scheme, the detachable connection method allows for flexible installation and use between the flushing pipe and the sewage suction pipe.

[0014] In one possible implementation of the first aspect described above, an adapter is used to connect the flushing pipeline and the sewage suction pipeline.

[0015] According to this solution, operators can flexibly select matching adapters for assembly based on factors such as the pipe diameter, spatial layout, and orientation of pipe bends in the sewage suction pipe. This allows the compressed air to be directed towards the inner wall of the pipe and areas with high sediment accumulation at bends. This method eliminates the need to alter the existing structure of the sewage suction pipe, modify it, or install multiple flushing pipes at different angles, thus achieving adaptive adjustment of the flushing angle. This reduces manufacturing costs and effectively improves the versatility, adaptability, and maintainability of the sewage suction pipe backflushing device.

[0016] In one possible implementation of the first aspect mentioned above, the connection angle between the flushing pipe and the sewage suction pipe is 30° to 60°.

[0017] According to this scheme, the compressed air flow can be directed towards the inner wall and bends of the sewage suction pipe, achieving targeted and efficient flushing and improving the flushing effect.

[0018] Secondly, this application provides a sewage discharge device, including a sewage collection chamber, a sewage suction pipe, and a sewage suction pipe backwashing device. The first end of the sewage suction pipe extends into the sewage collection chamber. The sewage suction pipe backwashing device is the same as described in the first aspect and any possible implementation thereof. The first end of the backwashing pipe of the sewage suction pipe backwashing device is connected to the side wall of the sewage suction pipe. The sewage suction pipe backwashing device is used to flush the sewage suction pipe by the impact of compressed air flow, so that impurities in the sewage suction pipe are blown into the sewage collection chamber by the impact of the compressed air flow.

[0019] According to this solution, the backwashing device for the sewage suction pipe is integrated into the sewage discharge device, forming a complete sewage discharge system with self-cleaning capabilities, thus improving its operational reliability. Furthermore, this sewage discharge device, by installing a flushing pipe on the side wall of the sewage suction pipe as an interface for compressed air input, eliminates the need to disassemble the pipe. The impact force of the high-pressure airflow effectively removes impurities, cleaning the dirt adhering to the inner wall of the sewage suction pipe and the solid matter deposited at the bends. This prevents impurities from accumulating in the sewage suction pipe, thus avoiding blockage of the discharge pump's suction port during the sewage discharge stage, which could lead to poor suction or failure to start the pump. This improves the sewage discharge speed and prevents blockages.

[0020] In one possible implementation of the second aspect described above, the wastewater discharge device further includes a gate valve, which is installed on the wastewater suction pipe and is used to control the opening or closing of the wastewater suction pipe.

[0021] According to the plan, opening the gate valve during flushing allows airflow to smoothly enter the sewage collection chamber, avoiding pressure buildup, and also facilitates the smooth discharge of flushed sewage and impurities into the sewage collection chamber.

[0022] In one possible implementation of the second aspect described above, the sewage discharge device further includes a discharge pump, which is disposed at the second end of the sewage suction pipe and is used to control the sewage in the sewage collection chamber to be drawn in from the first end of the sewage suction pipe and discharged from the second end of the sewage suction pipe during the sewage discharge stage.

[0023] According to the plan, the discharge pump can accelerate the discharge rate of sewage from the sewage collection chamber during the sewage discharge stage.

[0024] In one possible implementation of the second aspect above, the inlet end of the discharge pump is equipped with a valve for closing during the flushing phase of the sewage suction pipe to isolate the discharge pump from the impact of compressed air.

[0025] According to the plan, the valve at the inlet of the discharge pump should be closed in time during the flushing stage of the sewage suction pipe to prevent compressed air from impacting the discharge pump. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the wastewater discharge device provided in the embodiments of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1000. Wastewater discharge device;

[0029] 100. Sewage suction pipe backflushing device; 10. Flushing pipe; 20. Air compression system; 30. Check valve;

[0030] 200. Sewage collection compartment;

[0031] 300. Sewage suction pipe;

[0032] 400. Gate valve;

[0033] 500. Drain pump;

[0034] 600. Adapter. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] First, the technical problems to be solved by the embodiments of this application will be explained.

[0037] Domestic sewage on board ships is mainly discharged from the drains of shipboard sanitary facilities (such as toilets and sinks). The outlets of these facilities are connected to the inlet of the sewage collection tank, allowing sewage to flow by gravity into the tank for temporary storage or into a sewage treatment plant for further treatment. One end of a sewage suction pipe extends into the collection tank, and a discharge pump on this pipe pumps the sewage out of the tank to receiving facilities on shore or off the ship. This forms a complete sewage treatment process of "gravity collection - temporary storage - pump discharge."

[0038] However, with prolonged use of the sewage suction pipe, impurities in the sewage easily accumulate in the pipe, especially at bends near the discharge pump. Due to the change in flow path and significant change in pipe cross-section, the fluid flow state changes drastically at these points, making it easy for impurities in the sewage (including solid particles, fibrous debris, and grease deposits) to deposit and adhere to the inner surface of the pipe wall. As the ship operates over time, the deposits gradually thicken, reducing the effective pipe diameter, increasing flow resistance, and decreasing the sewage discharge rate. In severe cases, this can cause poor suction at the discharge pump, exacerbate cavitation, or even complete pipe blockage, affecting normal sewage discharge and adversely impacting the ship's normal operation.

[0039] To address this issue, manual cleaning after disassembling the pipeline is typically employed. Specifically, operators must first close relevant valves and drain any remaining wastewater from the pipeline. Then, they disassemble pipeline flanges or elbows, use specialized tools to scrape and clean the inner surface of the pipe walls, and finally reassemble the pipeline and restore drainage. However, this manual cleaning method is not only cumbersome and time-consuming, but frequent disassembly and reassembly can also lead to structural problems such as damage to flange sealing surfaces and bolt corrosion and breakage, increasing maintenance costs. Furthermore, during pipeline disassembly, residual wastewater may leak into the bilge, causing pollution and worsening the working environment for operators.

[0040] In view of this, this application provides a sewage suction pipe backflushing device, which includes a flushing pipe. Compressed air is introduced through the flushing pipe, and the sewage suction pipe is backflushed by the airflow impact of the compressed air. This can effectively remove the deposits on the pipe wall, thereby preventing the accumulation of impurities in the sewage suction pipe, improving the sewage discharge speed, avoiding blockage, and requiring no manual operation.

[0041] The wastewater suction pipe backwashing device of this application embodiment will be described below with reference to specific embodiments and accompanying drawings.

[0042] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of the wastewater discharge device provided in the embodiments of this application.

[0043] like Figure 1 As shown, the sewage discharge device 1000 may include a sewage suction pipe backwashing device 100, a sewage collection chamber 200, and a sewage suction pipe 300.

[0044] Understandably, the first end of the sewage suction pipe 300 can extend into the sewage collection chamber 200, and the second end of the sewage suction pipe 300 is used to discharge the sewage in the sewage collection chamber 200.

[0045] The structure of the sewage suction pipe backwashing device 100 is described below.

[0046] Continue to refer to Figure 1 The sewage suction pipe backwashing device 100 may include a flushing pipe 10. The first end of the flushing pipe 10 is connected to the side wall of the sewage suction pipe 300, and the second end of the flushing pipe 10 is used to introduce compressed air so as to flush the sewage suction pipe 300 by the airflow impact of the compressed air.

[0047] Specifically, the first end of the sewage suction pipe 300 extends into the sewage collection chamber 200 so that impurities in the sewage suction pipe 300 are blown into the sewage collection chamber 200 by the airflow of compressed air.

[0048] The impurities in the sewage suction pipe 300 may include dirt attached to the inner wall of the sewage suction pipe 300, solid matter deposited at the bend, and dirt at the suction port of the discharge pump on the sewage suction pipe 300. This can prevent the discharge pump from having poor suction or failing to start, and ensure smooth sewage discharge.

[0049] Therefore, by setting a flushing pipe 10 on the side wall of the sewage suction pipe 300 as an interface for compressed air input, impurities can be removed by utilizing the airflow impact force of high-pressure air without disassembling the pipe. This achieves the cleaning of dirt adhering to the inner wall of the sewage suction pipe 300 and solid matter deposited at the bend, preventing impurities from accumulating in the sewage suction pipe 300. Consequently, during the sewage discharge stage, impurities in the sewage suction pipe 300 can be prevented from clogging the suction port of the discharge pump, causing poor suction or inability to start the discharge pump, thereby improving the sewage discharge speed and preventing blockage.

[0050] In some embodiments, continue to refer to Figure 1 The sewage suction pipe backwashing device 100 may also include an air compression system 20.

[0051] The air compression system 20 is connected to the second end of the flushing line 10 to generate compressed air and deliver it to the flushing line 10, thereby reliably providing compressed air for the flushing process.

[0052] It is understandable that this air compression system 20 can use a working air cylinder or a working air compressor. The air compression system 20 can utilize the existing air compression system on board, without the need for additional air source equipment, resulting in low modification costs and easy implementation.

[0053] In some embodiments, continue to refer to Figure 1 The sewage suction pipe backwashing device 100 may also include a one-way valve 30.

[0054] A one-way valve 30 is installed on the flushing pipe 10 to prevent sewage in the sewage suction pipe 300 from flowing into the air compression system.

[0055] Understandably, one-way valve 30 can be opened when rinsing is needed, and closed when rinsing is finished.

[0056] Therefore, the one-way valve 30 can effectively prevent sewage from backflowing or flowing into the air compression system 20, ensuring the safe and reliable operation of the air compression system 20.

[0057] In some embodiments, the flushing pipe 10 and the sewage suction pipe 300 are detachably connected.

[0058] Optionally, the flushing pipe 10 can be a straight pipe structure to facilitate the disassembly of the flushing pipe 10 and the sewage suction pipe 300.

[0059] Understandably, when not flushing, the flushing line 10 can be disconnected from the sewage suction line 300, thereby reducing the risk of sewage backflow and compressed air leakage, and improving the flexibility and safety of the device.

[0060] Therefore, the detachable connection method allows for flexible installation and use between the flushing pipe 10 and the sewage suction pipe 300.

[0061] In some embodiments, such as Figure 1 As shown, the flushing pipe 10 and the sewage suction pipe 300 can be connected by an adapter 600.

[0062] Therefore, operators can flexibly select and assemble matching adapters 600 based on factors such as the pipe diameter, spatial arrangement, and orientation of the pipe bends in the sewage suction pipe 300. This allows the compressed air to be directed towards the inner wall of the pipe and the areas where sediment accumulates at the bends. In this way, the existing structure of the flushing pipe 10 does not need to be altered, nor does the sewage suction pipe 300 need to be modified. It also eliminates the need for multiple flushing pipes 10 at different angles, achieving adaptive adjustment of the flushing angle. This reduces manufacturing costs and effectively improves the versatility, adaptability, and maintainability of the sewage suction pipe backflushing device 100.

[0063] In some embodiments, the connection angle between the flushing pipe 10 and the sewage suction pipe 300 can be 30° to 60°.

[0064] This allows the compressed air to be directed at the inner wall and bends of the sewage suction pipe 300, achieving targeted and efficient flushing and improving the flushing effect.

[0065] This application embodiment also provides a sewage discharge device 1000, which includes the sewage suction pipe backwashing device 100 mentioned in any of the above embodiments.

[0066] Specifically, in combination Figure 1 As described above, the wastewater discharge device 1000 may include a wastewater suction pipe backwashing device 100, a wastewater collection chamber 200, and a wastewater suction pipe 300.

[0067] The first end of the sewage suction pipe 300 extends into the sewage collection chamber 200. The sewage suction pipe backwashing device 100 may include a flushing pipe 10, the first end of which is connected to the side wall of the sewage suction pipe 300, and the second end of which is used to introduce compressed air. The sewage suction pipe backwashing device 100 is used to flush the sewage suction pipe 300 by the impact of the compressed air flow, so that the impurities in the sewage suction pipe 300 are blown into the sewage collection chamber 200 by the impact of the compressed air flow.

[0068] Therefore, the backwashing device 100 for the sewage suction pipe is integrated into the sewage discharge device 1000, forming a complete sewage discharge device 1000 with self-cleaning capabilities, thus improving its operational reliability. Furthermore, this sewage discharge device 1000, by setting a flushing pipe 10 on the side wall of the sewage suction pipe 300 as an interface for compressed air input, removes impurities without disassembling the pipe, utilizing the impact force of high-pressure airflow. This cleans the dirt adhering to the inner wall of the sewage suction pipe 300 and the solid matter deposited at the bends, preventing the accumulation of impurities in the sewage suction pipe 300. This, in turn, prevents impurities in the sewage suction pipe 300 from clogging the discharge pump's suction port during the sewage discharge stage, thus avoiding poor suction or inability to start the discharge pump, thereby increasing the sewage discharge speed and preventing blockages.

[0069] In some embodiments, continue to refer to Figure 1 The sewage discharge device 1000 may also include a gate valve 400, which is installed on the sewage suction pipe 300 and is used to control the opening or closing of the sewage suction pipe 300.

[0070] Specifically, the gate valve 400 can be located at the connection between the sewage suction pipe 300 and the flushing pipe 10, or between the gate valve 400 and the first end of the sewage suction pipe 300.

[0071] Therefore, opening the gate valve 400 during flushing allows airflow to smoothly enter the sewage collection chamber 200, avoiding pressure buildup, and also facilitates the smooth discharge of flushed sewage and impurities into the sewage collection chamber 200.

[0072] In some embodiments, continue to refer to Figure 1 The wastewater discharge device 1000 may also include a discharge pump 500.

[0073] The discharge pump 500 is installed at the second end of the sewage suction pipe 300. During the sewage discharge stage, it controls the sewage in the sewage collection chamber 200 to be drawn in from the first end of the sewage suction pipe 300 and discharged from the second end of the sewage suction pipe 300.

[0074] Understandably, during the flushing phase of the sewage suction pipe 300, the discharge pump 500 is shut off. During the sewage discharge phase, the discharge pump 500 is turned on, allowing sewage from the sewage collection tank 200 to be discharged from the second end of the sewage suction pipe 300 to an overboard or shore-based receiving facility.

[0075] Therefore, the discharge pump 500 can accelerate the discharge speed of sewage in the sewage collection chamber 200 during the sewage discharge stage.

[0076] In some embodiments, the inlet end of the discharge pump 500 is provided with a valve for closing during the flushing phase of the sewage suction pipe 300 to isolate the discharge pump 500 from the impact of compressed air.

[0077] Therefore, during the flushing stage of the sewage suction pipe 300, the valve at the inlet of the discharge pump 500 should be closed in time to prevent compressed air from impacting the discharge pump 500.

[0078] It should be noted that in the examples and description of this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0079] Although this application has been illustrated and described with reference to certain preferred embodiments thereof, those skilled in the art should understand that various changes in form and detail may be made thereto without departing from the spirit and scope of this application.

Claims

1. A sewage suction pipe backwashing device (100), characterized in that, include: A flushing pipe (10) is provided, the first end of which is connected to the side wall of the sewage suction pipe (300), and the second end of which is used to introduce compressed air to flush the sewage suction pipe (300) by the airflow impact of the compressed air. The first end of the sewage suction pipe (300) extends into the sewage collection chamber (200) so that impurities in the sewage suction pipe (300) are blown into the sewage collection chamber (200) by the airflow of the compressed air.

2. The sewage suction pipe backwashing device (100) according to claim 1, characterized in that, Also includes: An air compression system (20) is connected to the second end of the flushing pipe (10) for generating compressed air and delivering the compressed air to the flushing pipe (10).

3. The sewage suction pipe backwashing device (100) according to claim 2, characterized in that, Also includes: A one-way valve (30) is provided on the flushing pipe (10) to prevent sewage in the sewage suction pipe (300) from flowing into the air compression system (20).

4. The sewage suction pipe backwashing device (100) according to claim 1, characterized in that, The flushing pipe (10) and the sewage suction pipe (300) are detachably connected.

5. The sewage suction pipe backwashing device (100) according to claim 1, characterized in that, The flushing pipe (10) and the sewage suction pipe (300) are connected by an adapter (600).

6. The sewage suction pipe backwashing device (100) according to claim 5, characterized in that, The connection angle between the flushing pipe (10) and the sewage suction pipe (300) is 30°~60°.

7. A sewage discharge device (1000), characterized in that, include: Wastewater collection chamber (200); Wastewater suction pipe (300), the first end of which extends into the wastewater collection chamber (200). A sewage suction pipe backwashing device (100) is a sewage suction pipe backwashing device (100) as described in any one of claims 1-6. The first end of the flushing pipe (10) of the sewage suction pipe backwashing device (100) is connected to the side wall of the sewage suction pipe (300). The sewage suction pipe backwashing device (100) is used to flush the sewage suction pipe (300) by the airflow impact of the compressed air, so that the impurities in the sewage suction pipe (300) are blown to the sewage collection chamber (200) by the airflow impact of the compressed air.

8. The wastewater discharge device (1000) according to claim 7, characterized in that, Also includes: A gate valve (400) is provided on the sewage suction pipe (300) for controlling the opening or closing of the passage of the sewage suction pipe (300).

9. The wastewater discharge device (1000) according to claim 7, characterized in that, Also includes: A discharge pump (500) is installed at the second end of the sewage suction pipe (300) to control the sewage in the sewage collection chamber (200) to be sucked in from the first end of the sewage suction pipe (300) and discharged from the second end of the sewage suction pipe (300) during the sewage discharge stage.

10. The wastewater discharge device (1000) according to claim 9, characterized in that, The inlet end of the discharge pump (500) is equipped with a valve for closing during the flushing stage of the sewage suction pipe (300) to isolate the discharge pump (500) from the impact of compressed air.

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