Siphon type filter

Abstract

The utility model discloses a siphon type filter and relates to the technical field of water purification equipment. The device comprises a filter tank, a U-shaped water inlet pipe and a siphon assembly, a filter chamber is arranged in the filter tank in an overhead manner, a bottom water collecting area is arranged below the filter chamber in the filter tank, and a clear water area communicated with the bottom water collecting area is arranged above the filter chamber; one end of the U-shaped water inlet pipe is communicated with the filtering chamber; the siphoning assembly comprises a first siphoning ascending pipe, a second siphoning ascending pipe and a siphoning descending pipe, the first siphoning ascending pipe is arranged above the filtering chamber, one end of the first siphoning ascending pipe is communicated with the top of the filtering chamber, the other end of the first siphoning ascending pipe is communicated with the second siphoning ascending pipe, and the second siphoning ascending pipe is vertically arranged outside the filtering tank and two ends of the second siphoning ascending pipe are sealed; the upper part of the siphon descending pipe is coaxially connected in the second siphon ascending pipe, and a first opening communicated with the inner cavity of the second siphon ascending pipe is formed in the upper end of the siphon descending pipe. The siphon type filter has the advantages of automation, water saving, energy saving, simple structure, strong adaptability and the like.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and in particular to a siphon filter. Background Technology

[0002] Water purification equipment is used to remove impurities, pollutants, microorganisms, and other harmful substances from water through processes such as sedimentation, filtration, adsorption, and disinfection, thereby obtaining water that meets specific quality requirements. During operation, impurities in the water gradually accumulate on the filter components. Therefore, it is necessary to backwash the filter media regularly to remove impurities, restore its filtration performance, and ensure the normal operation of the water treatment equipment and the quality of the effluent.

[0003] Traditional backwashing methods include: Firstly, water backwashing. During backwashing, the normal inlet and outlet valves are closed, and the backwash valve is opened, allowing water to flow backward from the purified water outlet into the water purification equipment. This washes away impurities adhering to the surface and interior of the filter media. However, traditional water backwashing consumes a large amount of water, potentially wasting resources. Secondly, air-water combined backwashing. Compressed air is introduced, and the numerous air bubbles formed in the water violently agitate the filter media layer, causing friction and collisions between the filter particles, thus loosening impurities adhering to the filter media surface. While this method can reduce water consumption to some extent, it requires equipment such as an air compressor, increasing the complexity of the equipment and investment costs. Therefore, further improvements are necessary. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a siphon filter with advantages such as automation, water saving, energy saving, simple structure and strong adaptability.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A siphon filter includes a filter tank, a U-shaped inlet pipe, and a siphon assembly. A filter chamber is suspended within the filter tank. A bottom water collection area is located below the filter chamber, and a clear water area connected to the bottom water collection area is located above the filter chamber. One end of the U-shaped inlet pipe is connected to the filter chamber. The siphon assembly includes a first siphon riser pipe, a second siphon riser pipe, and a siphon downpipe. The first siphon riser pipe is located above the filter chamber, with one end connected to the top of the filter chamber and the other end connected to the second siphon riser pipe. The second siphon riser pipe is vertically located outside the filter tank and sealed at both ends. The upper part of the siphon downpipe is coaxially connected to the inside of the second siphon riser pipe, and its upper end has a first opening communicating with the inner cavity of the second siphon riser pipe.

[0007] Furthermore, the siphon assembly also includes an extraction pipe, a siphon auxiliary pipe, and a forced siphon pipe. The extraction pipe is coaxially connected inside the siphon downpipe, with its upper end sealed and its lower end extending out from the bottom of the siphon downpipe and having a second opening. One end of the siphon auxiliary pipe is connected to the upper part of the extraction pipe, and the other end extends out of the siphon downpipe and has a third opening that communicates with the inner cavity of the second siphon uppipe. The forced siphon pipe is located below the siphon auxiliary pipe, with one end connected to the extraction pipe and the other end extending out of the siphon downpipe and the second siphon uppipe and connected to an air compressor or an air tank. The forced siphon pipe is equipped with a control valve.

[0008] Furthermore, the siphon assembly also includes a siphon breaking tube, which is located below the siphon auxiliary tube. One end of the siphon breaking tube is connected to the air extraction tube, and the other end is connected to a siphon breaking bucket, which is installed in the clear water zone.

[0009] Furthermore, the side wall of the clear water area is equipped with a water outlet, from which clear water is discharged.

[0010] Furthermore, a high-level water tank is provided on one side of the filtration pool. The high-level water tank is used to store water that has undergone preliminary treatment such as coagulation and sedimentation, and uses gravity to generate water pressure. A clarified water outlet hopper is provided on one side of the high-level water tank, and the other end of the U-shaped water inlet pipe is connected to the clarified water outlet hopper.

[0011] Furthermore, the side wall of the filter tank has an inspection hole that communicates with its inner cavity. The inspection hole is equipped with an inspection hole cover, providing a passage for staff to enter the interior of the filter tank.

[0012] Compared with the prior art, this utility model achieves at least the following beneficial effects:

[0013] When pollutants in the wastewater clog the pores of the filter media, the filtration resistance increases, causing the required filtration pressure to gradually increase. At this time, the water level in the first siphon riser rises. When the water level reaches the highest point of the second siphon riser, it enters the siphon downcomer through the first opening and flows out. This siphon principle, utilizing the physical phenomenon of liquid flowing from a high place to a low place based on gravity and atmospheric pressure difference, allows the filter to automatically backwash without external power, saving energy. The clean water stored in the clear water zone begins to flow backward due to gravity. The water passes through the bottom collection area, the support layer of the filter chamber, and the filter media layer, with the water flow flowing in the opposite direction. The siphon filter removes suspended solids and impurities accumulated on the filter media layer, and discharges the impurities from the filter chamber through a siphon downcomer, restoring the filtration performance of the filter media and maintaining the filtration effect. Compared with traditional backwashing methods, the siphon filter uses the siphon principle for backwashing, which consumes less water and saves water resources. The siphon filter has a simple design, eliminating the need for complex valves and control systems, thus reducing maintenance costs and failure rates. The siphon filter is suitable for small and medium-sized water treatment plants and can meet the wastewater treatment needs of different scales. In summary, the siphon filter has advantages such as automation, water saving, energy saving, simple structure, and strong adaptability. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of an embodiment of this application;

[0015] Figure 2 for Figure 1 AA section view;

[0016] Figure 3 This is a schematic diagram of the siphon assembly according to an embodiment of this application;

[0017] Figure 4 This is a schematic diagram of the structure of an embodiment of this application.

[0018] The diagram is labeled as follows: 1. Filter tank; 11. Filter chamber; 12. Bottom water collection area; 13. Clear water area; 131. Outlet; 2. U-shaped inlet pipe; 3. Siphon assembly; 31. First siphon riser pipe; 32. Second siphon riser pipe; 33. Siphon downcomer pipe; 331. First opening; 34. Air extraction pipe; 341. Second opening; 35. Siphon auxiliary pipe; 351. Third opening; 36. Forced siphon pipe; 361. Control valve; 37. Siphon breaking pipe; 371. Siphon breaking hopper; 4. High-level water tank; 5. Clarified water outlet hopper; 6. Inspection hole. Detailed Implementation

[0019] The present invention will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of this application more complete and to fully convey the concept of the present application to those skilled in the art.

[0020] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Moreover, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] like Figures 1-4As shown in the embodiment of this application, a siphon filter includes a filter tank 1, a U-shaped inlet pipe 2, and a siphon assembly 3. A filter chamber 11 is suspended within the filter tank 1. Within the filter chamber 11, a pre-filter area, a filter media layer, and a support layer are sequentially arranged from top to bottom. A bottom water collection area 12 is located below the filter chamber 11, and a clear water area 13 is located above the filter chamber 11. The clear water area 13 is connected to the bottom water collection area 12. Gaps can be provided between the front and rear outer walls of the filter chamber 11 and the inner wall of the filter tank 1, allowing water from the bottom clear water area 13 to rise through the gaps and be stored in the clear water area 13. One end of the U-shaped inlet pipe 2 is connected to the filter chamber 11, i.e., the U-shaped inlet pipe 2... The siphon assembly 3 is used to guide wastewater that has undergone pretreatment processes such as coagulation and sedimentation into the filter chamber 11, where it is filtered through the filter media layer, and then passes through the support layer and the bottom water collection area 12 to enter the clear water area 13. The siphon assembly 3 includes a first siphon riser pipe 31, a second siphon riser pipe 32, and a siphon downpipe 33. The first siphon riser pipe 31 is located above the filter chamber 11, with one end connected to the top of the filter chamber 11 and the other end connected to the second siphon riser pipe 32. The second siphon riser pipe 32 is vertically located outside the filter tank 1 and is sealed at both ends. The upper part of the siphon downpipe 33 is coaxially connected to the second siphon riser pipe 32, and its upper end is provided with a first opening 331 that communicates with the inner cavity of the second siphon riser pipe 32.

[0022] During the operation of a siphon filter, over time, pollutants in the wastewater gradually clog the pores of the filter media, leading to increased filtration resistance, reduced water flow, and decreased filtration efficiency. This causes the required filtration pressure to gradually increase, causing the water level in the first siphon riser pipe 31 to rise. When the water level reaches the highest point of the second siphon riser pipe 32, it flows through the first opening 331 into the siphon downcomer pipe 33 and out. The siphon principle, utilizing the physical phenomenon of liquid flowing from a higher to a lower position based on gravity and atmospheric pressure difference, allows the filter to automatically backwash without external power, saving energy and improving cleaning efficiency. The clean water stored in water zone 13 begins to flow backwards due to gravity. The water passes through the bottom collection zone 12, the support layer of the filter chamber 11, and the filter media layer. The backflow of water washes away suspended solids and impurities accumulated on the filter media layer, discharging the impurities through the siphon downcomer 33 into the filter chamber 11, restoring the filtration performance of the filter media and maintaining the filtration effect. Compared with traditional backwashing methods, the siphon filter uses less water during backwashing, saving water resources. The siphon filter has a simple design, requiring no complex valves and control systems, reducing maintenance costs and failure rates. The siphon filter is suitable for small and medium-sized water treatment plants and can meet the wastewater treatment needs of different scales. In summary, the siphon filter has advantages such as automation, water saving, energy saving, simple structure, and strong adaptability.

[0023] In some embodiments, the siphon assembly 3 further includes an extraction pipe 34, a siphon auxiliary pipe 35, and a forced siphon pipe 36. The extraction pipe 34 is coaxially connected inside the siphon downpipe 33, with its upper end sealed and its lower end extending out from the lower part of the siphon downpipe 33 and having a second opening 341. One end of the siphon auxiliary pipe 35 is connected to the upper part of the extraction pipe 34, and the other end extends out of the siphon downpipe 33 and has a third opening 351 that communicates with the inner cavity of the second siphon uppipe 32. The forced siphon pipe 36 is located below the siphon auxiliary pipe 35, with one end connected to the extraction pipe 34 and the other end extending out of the siphon downpipe 33 and the second siphon uppipe 32 and connected to an air compressor or air tank (not shown in the figure). The forced siphon pipe 36 is provided with a control valve 361, which can be opened or closed according to a set time or other conditions. The air compressor or air tank connected to the forced siphon pipe 36 can provide compressed air to the extraction pipe 34. When the control valve 361 is opened, the compressed air enters the extraction pipe 34 through the forced siphon pipe 36 and is discharged from the second opening 341. Since the siphon auxiliary pipe 35 is provided with a third opening 351, the siphon auxiliary pipe 35 connects the extraction pipe 34 with the second siphon riser pipe 32 and the siphon fallr pipe 33. The rapid flow of compressed air will quickly discharge the air in the extraction pipe 34, the second siphon riser pipe 32 and the siphon fallr pipe 33. As the air is discharged, the pressure in the extraction pipe 34, the second siphon riser pipe 32 and the siphon fallr pipe 33 drops rapidly, forming a negative pressure state and generating a negative pressure suction phenomenon. This forces the water in the second siphon riser pipe 32 into the siphon fallr pipe 33, and the siphon effect begins to form. The water continues to flow by gravity and flows out from the lower end of the siphon fallr pipe 33, automatically performing backwashing of the filter layer. It should be noted that when the suction pipe 34 is under negative pressure, water can also enter the suction pipe 34 through the third opening 351 of the siphon auxiliary pipe 35 and be discharged from the second opening 341 of the suction pipe 34.

[0024] In some embodiments, the siphon assembly 3 further includes a siphon breaking pipe 37, which is located below the siphon auxiliary pipe 35. One end of the siphon breaking pipe 37 is connected to the air extraction pipe 34, and the other end passes through the siphon downpipe 33 and the second siphon uppipe 32 and is connected to a siphon breaking bucket 371, which is installed in the clear water zone 13. During the backwashing of the filter media, the water level in the clear water zone 13 drops. When the water level drops to the height of the siphon breaking bucket 371, the siphon breaking bucket 371 begins to function. Air enters the air extraction pipe 34 from the siphon breaking bucket 371 through the siphon breaking pipe 37, breaking the negative pressure state and thus disrupting the siphon phenomenon in the siphon downpipe 33. The backwashing operation stops, and the filter tank 1 resumes filtration operation.

[0025] In addition, the side wall of the clear water zone 13 is provided with a water outlet 131, from which the stored clear water can be discharged.

[0026] A high-level water tank 4 is provided on one side of the filter tank 1, and a clarified water outlet hopper 5 is provided on one side of the high-level water tank 4. The other end of the U-shaped water inlet pipe 2 is connected to the clarified water outlet hopper 5. The high-level water tank 4 is used to store water that has undergone preliminary treatment such as coagulation and sedimentation, and uses gravity to generate water pressure to transport the water to the filter tank 1.

[0027] The side wall of the filter tank 1 has an inspection hole 6 that communicates with its inner cavity, and the inspection hole 6 is equipped with an inspection hole 6 cover. The inspection hole 6 facilitates inspection and maintenance, allows for easy observation of the internal condition, and facilitates the installation and replacement of parts. It also provides a passage for personnel to enter the interior of the filter tank 1, and allows personnel to directly observe the internal condition of the filter during operation.

[0028] It should be understood that all the above embodiments are exemplary and not restrictive. Any modifications, equivalent changes and alterations made by those skilled in the art to the specific embodiments described above under the concept of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A siphon filter, characterized in that: The system includes a filter tank, a U-shaped inlet pipe, and a siphon assembly. The filter tank contains an overhead filter chamber. Below the filter chamber is a bottom water collection area, and above the filter chamber is a clear water area connected to the bottom water collection area. One end of the U-shaped inlet pipe is connected to the filter chamber. The siphon assembly includes a first siphon riser, a second siphon riser, and a siphon faller. The first siphon riser is located above the filter chamber, with one end connected to the top of the filter chamber and the other end connected to the second siphon riser. The second siphon riser is vertically positioned outside the filter tank and sealed at both ends. The upper part of the siphon faller is coaxially connected to the inside of the second siphon riser, and its upper end has a first opening communicating with the inner cavity of the second siphon riser.

2. The siphon filter according to claim 1, characterized in that: The siphon assembly further includes an extraction pipe, a siphon auxiliary pipe, and a forced siphon pipe. The extraction pipe is coaxially connected inside the siphon downpipe, with its upper end sealed and its lower end extending out from the lower part of the siphon downpipe and having a second opening. One end of the siphon auxiliary pipe is connected to the upper part of the extraction pipe, and the other end extends out of the siphon downpipe and has a third opening communicating with the inner cavity of the second siphon uppipe. The forced siphon pipe is located below the siphon auxiliary pipe, with one end connected to the extraction pipe and the other end extending out of the siphon downpipe and the second siphon uppipe and connected to an air compressor or an air tank. The forced siphon pipe is equipped with a control valve.

3. The siphon filter according to claim 2, characterized in that: The siphon assembly also includes a siphon breaking tube, which is located below the siphon auxiliary tube. One end of the siphon breaking tube is connected to the air extraction tube, and the other end is connected to a siphon breaking bucket, which is installed in the clear water zone.

4. The siphon filter according to claim 1, characterized in that: The clear water area has a water outlet on its side wall.

5. The siphon filter according to claim 1, characterized in that: A high-level water tank is provided on one side of the filtration pool, and a clarified water outlet hopper is provided on one side of the high-level water tank. The other end of the U-shaped water inlet pipe is connected to the clarified water outlet hopper.

6. The siphon filter according to claim 1, characterized in that: The filter tank has an inspection hole on its side wall that communicates with its inner cavity, and the inspection hole is equipped with an inspection hole cover.

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