A backwashing system

Abstract

This utility model discloses a backwashing system, including a positive water pressure backwashing component, a positive air pressure backwashing component, and a flushing pipeline. The positive water pressure backwashing component includes a water supply pipeline, a water pump, and a first control valve located on the water supply pipeline. The positive air pressure backwashing component includes an air supply pipeline, a blower, and a second control valve located on the air supply pipeline. The outlet ends of the water supply pipeline and the air supply pipeline are connected to the inlet end of the flushing pipeline. The flushing pipeline is equipped with nozzles for spraying water and / or air onto the bottom and inner wall of the device to be flushed. The flushing method provided by this application can quickly and effectively clean various sediments in different locations within the sedimentation tank and waiting flushing device, greatly improving flushing efficiency and shortening cleaning time. In addition, it also simultaneously achieves the effective recovery and utilization of nutrients in the cleaning water of the ton-bucket and nutrients deposited in the raw material tank.

Description

Technical Field

[0001] This utility model belongs to the technical field of backwashing equipment, and specifically relates to a backwashing system. Background Technology

[0002] In modern society, improving efficiency and conserving resources have become essential management practices. In the industrial and agricultural sectors, the implementation of cost-reduction, efficiency-enhancing, and water-saving measures can effectively improve production efficiency, reduce costs, and also have a positive impact on environmental protection.

[0003] During the production and blending of liquid fertilizers, some sediment and adhering raw materials are generated inside the ton containers. During the cleaning of the ton containers, some nutrients (nitrogen, phosphorus, and potassium) cannot be utilized. Approximately 50,000 ton containers are cleaned each production season. The nutrient content of the solution flowing out after each cleaning is unstable and uneven, making it unusable.

[0004] Cleaning one tonne container requires 15-20 kg of production water, and a production season requires 750-1000 tons of water. This results in significant water waste, difficult subsequent cleaning, high labor costs, and purification processing fees exceeding the cost of purchasing the finished product. Therefore, it is necessary to contact a third party for disposal as solid waste. After the sediment is manually removed, it is dried through methods such as sun-drying to meet the requirements of third-party buyers. During the drying process, 4-5 people are needed daily to stir the material intermittently to accelerate the drying process. In case of rain or snow, it is essential to collect and cover the material promptly. The labor costs incurred during the drying process are also high.

[0005] In addition, the production process of liquid fertilizer also involves sedimentation tanks for fermented liquids, raw material tanks, and solid-liquid premixing tanks. Raw materials will settle and adhere to the bottom and walls of the tanks, which also require regular cleaning.

[0006] To address the aforementioned issues, this application proposes to design and manufacture a backwashing system that can effectively remove dirt and impurities deposited inside the sedimentation tank and waiting rinsing device, and collect the cleaning water from the ton tank and the nutrients deposited in the sedimentation tank for further recycling. Utility Model Content

[0007] The purpose of this invention is to provide a backwashing system to address the shortcomings of existing technologies.

[0008] The objective of this utility model is achieved through the following technical solution:

[0009] A backwashing system includes a positive water pressure backwashing assembly, a positive air pressure backwashing assembly, and a flushing pipeline;

[0010] The positive water pressure backwashing assembly includes a water supply pipeline, a water pump located on the water supply pipeline, and a first control valve;

[0011] The positive pressure backwash assembly includes an air supply pipeline, and a fan and a second control valve located on the air supply pipeline;

[0012] The outlet end of the water supply pipeline and the outlet end of the gas supply pipeline are connected to the inlet end of the flushing pipeline; the flushing pipeline is equipped with nozzles for spraying water and / or gas onto the bottom and inner wall of the device to be flushed.

[0013] Preferably, the positive water pressure backwashing component is activated when the viscosity of the solution in the device to be rinsed is high; the positive air pressure backwashing component is activated when the viscosity of the solution in the device to be rinsed is low.

[0014] Preferably, the backwashing system further includes a water tank and a sludge pump;

[0015] The water trough is located on top of the device to be rinsed and is used to introduce ton barrel cleaning water into the device to be rinsed.

[0016] The inlet of the sludge pump is connected to the bottom of the flushing device and is used to discharge the backwashed aqueous solution from the flushing device.

[0017] Preferably, the water channel is U-shaped.

[0018] Preferably, the backwashing system further includes a recovery tank connected to the outlet end of the sludge pump for recovering the aqueous solution after backwashing.

[0019] Preferably, the recycling tank comprises two.

[0020] Preferably, the water trough is equipped with a filter screen.

[0021] Preferably, the flushing pipes are distributed in a mesh pattern in the horizontal direction within the device to be flushed, and multiple sets are provided in the vertical direction.

[0022] Preferably, the flushing pipeline includes a vertical main pipeline and multiple horizontal branch pipelines that are connected to the vertical main pipeline and are evenly distributed in a linear array;

[0023] The inlet end of the vertical main pipeline is connected to the water pipeline and the gas pipeline.

[0024] Preferably, the inlet end of the vertical main pipeline is provided with a one-way valve to allow the flushing medium in the water pipeline and the air pipeline to be transported unidirectionally to the vertical main pipeline.

[0025] The rinsing method provided in this application can quickly and effectively clean various sediments in different locations within the settling tank and rinsing device, greatly improving rinsing efficiency and shortening cleaning time. Furthermore, it eliminates the need for large amounts of water for backwashing during operation, reducing water waste and energy consumption. It also avoids the problem of increased wastewater discharge due to multiple rinsing processes, thus better meeting environmental protection requirements. In addition, it simultaneously enables the effective recovery and utilization of nutrients from the cleaning water in the ton-bottle and the nutrients deposited in the raw material tank. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the backwashing system provided in this application;

[0027] Figure 2 This is a side view of the water tank provided in this application;

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-Water pump; 2-Fan; 3-Flushing pipeline; 31-Vertical main pipeline; 32-Horizontal branch pipeline; 4-Water trough; 5-Sludge pump; 6-Recovery tank; 7-Check valve; 8-Discharge pump; 9-Purpose flushing device. Detailed Implementation

[0030] This application provides a backwashing system suitable for sedimentation tanks, raw material tanks, and solid-liquid premixing tanks used in liquid fertilizer production. Figures 1-2 As shown, the backwashing system includes a positive water pressure backwashing component, a positive air pressure backwashing component, and a flushing pipeline 3.

[0031] The positive water pressure backwash assembly includes a water supply pipeline, a water pump 1 located on the water supply pipeline, and a first control valve; the positive air pressure backwash assembly includes an air supply pipeline, a blower 2 located on the air supply pipeline, and a second control valve.

[0032] The outlet ends of the water supply pipeline and the gas supply pipeline are connected to the inlet end of the flushing pipeline 3; high-pressure water and high-pressure gas can be supplied to the flushing pipeline for flushing through the water supply pipeline and the gas supply pipeline. The water pump 1 and the blower 2 provide the power source. The water pump is preferably a centrifugal pump, and the blower is preferably a Roots blower.

[0033] The first and second control valves are used to control the on / off of water and air supply, respectively. The flushing pipeline 3 is equipped with nozzles for spraying water and / or air onto the bottom and inner wall of the device to be flushed 9, so as to quickly and effectively clean various sediments in different locations in the sedimentation tank.

[0034] A water pump can generate positive pressure, which can then propel the clean liquid (usually clean water or recycled water) at high speed through water supply and flushing pipelines to the inner walls and bottom of the device to be flushed, such as a sedimentation tank, effectively removing attached dirt, sediment, and biofilm. A blower can also generate positive pressure, creating a pressure difference between the inside and outside of the pipeline. When flushing is required, external air is forced into the pipeline, forming a high-speed airflow that is sprayed onto the inner walls and bottom of the device to be flushed, such as a sedimentation tank, effectively removing attached dirt, sediment, and biofilm.

[0035] The following describes the workflow of this application in detail, taking a sedimentation tank as an example.

[0036] When the sedimentation tank needs to be flushed, a certain amount of ton-bucket cleaning water can be introduced first. It is preferable that the water level in the ton-bucket cleaning water reaches two-thirds of the lower edge of the top of the tank. Then, soak for a period of time to dissolve the sediment in the sedimentation tank in advance and remove some of the sediment.

[0037] Then rinse. The concentration and viscosity of the solution after soaking will vary depending on the type and amount of sediment in the sedimentation tank. The appropriate rinsing method should be selected based on the viscosity of the solution in the sedimentation tank. Specifically:

[0038] When the solution in the sedimentation tank has a high viscosity, positive water pressure backwashing is used. The water supply pipeline is connected to the water source, the second control valve and the blower are closed, and the water pump and the first control valve are turned on. The clear liquid is sprayed at high speed through the water supply pipeline and the flushing pipeline to the inner wall and bottom of the sedimentation tank, which not only thoroughly flushes the sedimentation tank, but also dilutes the solution in the sedimentation tank and reduces the viscosity of the solution. Then, positive air pressure backwashing is used. The water pump and the first control valve are closed, and the second control valve and the blower are turned on. The high-speed airflow drives the solution in the sedimentation tank to repeatedly flush the tank wall and bottom, thereby thoroughly removing the dirt and impurities on the tank bottom and tank wall, and also reducing the flushing water usage.

[0039] The rinse solution can be collected, and the nutrient content in the rinse solution can be tested for reuse.

[0040] Therefore, the rinsing method provided in this application can quickly and effectively clean various sediments in different locations within the sedimentation tank, greatly improving rinsing efficiency and shortening cleaning time. Furthermore, it eliminates the need for large amounts of water for backwashing during operation, reducing water waste and energy consumption, and avoiding the problem of increased wastewater discharge due to multiple rinsing processes, thus better meeting environmental protection requirements. In addition, it also simultaneously achieves the effective recovery and utilization of nutrients from the cleaning water in the ton-bottle and the nutrients deposited in the raw material tank.

[0041] Preferably, the backwashing system provided in this application further includes a water tank 4 and a sludge pump 5;

[0042] The water trough 4 is located on top of the device to be rinsed and is used to introduce the ton container cleaning water into the device to be rinsed; the inlet end of the sludge pump 5 is connected to the bottom of the device to be rinsed and is used to discharge the aqueous solution after backwashing inside the device to be rinsed.

[0043] The water channel 4 is preferably U-shaped. The U-shaped channel shape and inclination angle can effectively reduce water flow resistance and improve water flow efficiency. Furthermore, the inner surface of the water channel 4 has a high degree of smoothness, which further reduces water flow resistance and makes the water flow smoother. The water channel 4 is preferably made of stainless steel to extend its service life.

[0044] Preferably, the water trough is equipped with a filter screen to prevent large-particle impurities in the ton container cleaning water from entering the rinsing device. Multiple filters may be installed.

[0045] The sludge pump 5 of this application should be able to operate at high pressure and be suitable for a variety of media with different properties, including high-viscosity liquids and liquids containing solid particles. An impeller structure is preferred to reduce entanglement and clogging. The shaft and oil chamber have good sealing properties and are protected against leakage. The entire sludge pump is made of corrosion-resistant and wear-resistant materials to withstand harsh environments.

[0046] Preferably, the backwashing system provided in this application further includes a recovery tank 6, which is connected to the outlet end of the sludge pump 5 and is used to recover the aqueous solution after backwashing.

[0047] The recovery tank 6 preferably includes two tanks, which can serve as backups for each other. As those skilled in the art will understand, a connecting pipeline and a control valve are provided between the sludge pump and the recovery tank to facilitate the transfer of the flushed solution.

[0048] Preferably, the recovery tank 6 is connected to a discharge pipeline, and the discharge pipeline is equipped with a control valve and a discharge pump 8 to control the discharge of the solution in the recovery tank.

[0049] Preferably, the flushing pipes 3 are arranged in a network pattern in the horizontal direction within the device to be flushed, and multiple sets are provided in the vertical direction. The flushing pipes 3 include a vertical main pipe 31 and multiple horizontal branch pipes 32 that are connected to the vertical main pipe and are evenly distributed in a linear array; the inlet end of the vertical main pipe is connected to a water supply pipe and a gas supply pipe. With this arrangement, flushing water and high-pressure gas can reach different locations within the device to be flushed.

[0050] More preferably, the inlet end of the vertical main pipeline is provided with a one-way valve 7, which is used to allow the flushing medium in the water supply pipeline and the air supply pipeline to be transported unidirectionally to the vertical main pipeline, so as to prevent the solution inside the device to be flushed from flowing back into the fan or water pump, causing pollution and blockage.

[0051] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if such modifications and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include such modifications and modifications.

Claims

1. A backwashing system, characterized in that, Includes a positive water pressure backwash assembly, a positive air pressure backwash assembly, and flushing pipelines; The positive water pressure backwashing assembly includes a water supply pipeline, a water pump located on the water supply pipeline, and a first control valve; The positive pressure backwash assembly includes an air supply pipeline, and a fan and a second control valve located on the air supply pipeline; The outlet end of the water supply pipeline and the outlet end of the gas supply pipeline are connected to the inlet end of the flushing pipeline; the flushing pipeline is equipped with nozzles for spraying water and / or gas onto the bottom and inner wall of the device to be flushed.

2. The backwashing system as described in claim 1, characterized in that, The positive water pressure backwashing component is activated when the viscosity of the solution in the device to be rinsed is high; the positive air pressure backwashing component is activated when the viscosity of the solution in the device to be rinsed is low.

3. The backwashing system as described in claim 1, characterized in that, It also includes water tanks and sludge pumps; The water trough is located on top of the device to be rinsed and is used to introduce ton barrel cleaning water into the device to be rinsed. The inlet of the sludge pump is connected to the bottom of the flushing device and is used to discharge the backwashed aqueous solution from the flushing device.

4. The backwashing system as described in claim 3, characterized in that, The water channel is U-shaped.

5. The backwashing system as described in claim 3, characterized in that, It also includes recycling bins; The recovery tank is connected to the outlet end of the sludge pump and is used to recover the aqueous solution after backwashing.

6. The backwashing system as described in claim 5, characterized in that, The recycling tanks consist of two.

7. The backwashing system as described in claim 3, characterized in that, The water trough is equipped with a filter screen.

8. The backwashing system as described in claim 1, characterized in that, The flushing pipelines are distributed in a mesh pattern in the horizontal direction within the device to be flushed, and multiple sets are provided in the vertical direction.

9. The backwashing system as described in claim 8, characterized in that, The flushing pipeline includes a vertical main pipeline and multiple horizontal branch pipelines that are connected to the vertical main pipeline and are evenly distributed in a linear array. The inlet end of the vertical main pipeline is connected to the water pipeline and the gas pipeline.

10. The backwashing system as described in claim 9, characterized in that, The inlet end of the vertical main pipeline is equipped with a one-way valve to allow the flushing medium in the water pipeline and the gas pipeline to be transported unidirectionally to the vertical main pipeline.

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