Air-water backwashing device for filter tank
Through the design of staggered arrangement of water pipes and air pipes, the combination of water spray and air jet solves the problem of poor backwashing effect of the filter pool and achieves more efficient backwashing effect and filtration efficiency.
Patent Information
- Application Number
- CN202422893373.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-25
AI Technical Summary
The backwashing effect of the filter pool in the prior art is poor and the efficiency is low.
The water pipes and air pipes are arranged in a staggered manner. The water pipes are used to spray water, and the air pipes are used to jet air. Through the combination of water spraying and air jetting, the suspended solids on the surface of the filter layer are stripped off, the water flow capacity is enhanced, and the backwash effect is improved.
The backwash effect and efficiency of the filter pool are significantly improved, ensuring the continuous and efficient filtration capacity of the filter layer.
Smart Images
Figure CN223474540U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of filter tank technology, and specifically relates to a filter tank air-water backwashing device. Background Technology
[0002] A filter tank is a structure used to remove tiny particles from low-concentration suspensions. The filtration process includes two stages: filtration and backwashing. In the filtration stage, wastewater enters the tank through pipes and flows through the filter media layer and support layer. Fine suspended solids and colloidal substances in the wastewater are trapped on the surface and in the pores of the filter media, thus purifying the wastewater. The filtered liquid is then collected and discharged through a collection pipe. In the backwashing stage, backwash water enters the tank through a distribution system, flows through the support layer and filter media layer, washing away the dirt deposited in the filter media layer and carrying it into the backwash drainage tank for discharge outside the tank. Backwashing, also known as filter flushing, aims to remove impurities trapped in the filter media layer, allowing the filter to quickly restore its filtration capacity.
[0003] However, the backwashing effect of existing filter tanks is poor and the efficiency is low. Utility Model Content
[0004] This invention provides a filter tank air-water backwashing device to solve the technical problem of poor backwashing effect in the prior art.
[0005] This utility model is achieved through the following technical solution:
[0006] A filter tank air-water backwashing device, comprising:
[0007] The filter tank body has a liquid inlet at the top and a first liquid outlet and a second liquid outlet on the side wall of the filter tank body, which are located at the upper and lower parts of the filter tank, respectively.
[0008] A filter layer is installed inside the filter tank body. The filter layer is used to filter impurities in the liquid, and the filter layer is located between the first drain port and the second drain port.
[0009] A water supply pipe is installed inside the filter tank. The side wall of the water supply pipe has multiple water outlet holes. The water supply pipe is used to spray water toward the filter layer.
[0010] An air supply pipe is installed inside the filter tank. The side wall of the air supply pipe has multiple air outlets. The air supply pipe is used to spray air towards the filter layer. The water supply pipe and the air supply pipe are arranged at intervals along a first direction.
[0011] Furthermore, the water supply pipe is arranged in an S-shape, and multiple water outlet holes are evenly distributed on the outer side wall of the water supply pipe.
[0012] Furthermore, both ends of the water supply pipe are located on the same side of the filter tank body.
[0013] Furthermore, it also includes:
[0014] The main water supply pipe is connected to a remote access point at one end.
[0015] The middle part of the water distribution pipe is connected to the other end of the main water supply pipe, and the two ends of the main water supply pipe are respectively connected to the two ends of the water distribution pipe.
[0016] There are two first valves, which are respectively installed at both ends of the water supply pipe. The two first valves are used to control the opening and closing of the water supply pipe.
[0017] Furthermore, the gas supply pipe is also arranged in an S-shape, and multiple gas outlets are evenly distributed on the outer side wall of the gas supply pipe.
[0018] Furthermore, it also includes two second valves, which are respectively installed at both ends of the gas pipeline and are used to control the opening and closing of the gas pipeline.
[0019] Furthermore, the projection of the water outlet in the first direction does not coincide with the projection of the air outlet in the first direction, and the projection of the water outlet in the second direction does not coincide with the projection of the air outlet in the second direction, wherein the second direction and the first direction are perpendicular to each other.
[0020] Furthermore, the filtration process includes three filter screens, which are installed in the filtration tank body along the first direction, and the diameter of the filter holes of the three filter screens gradually decreases along the first direction.
[0021] Furthermore, it also includes three mounting frames, which are installed along the first direction on the filter body, and the three filter screens are respectively installed in the three mounting frames.
[0022] Furthermore, the three mounting frames are detachably mounted on the filter tank body by bolts.
[0023] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0024] The filter tank air-water backwashing device provided by this utility model includes a filter tank body with a liquid inlet at the top and a first drain outlet and a second drain outlet on the side wall of the filter tank body, located at the upper and lower parts of the filter tank respectively. A filter layer is installed in the filter tank body and is used to filter impurities in the liquid. The filter layer is located between the first drain outlet and the second drain outlet. A water supply pipe is installed in the filter tank body and has multiple water outlet holes on its side wall. The water supply pipe is used to spray water onto the filter layer. An air supply pipe is installed in the filter tank body and has multiple air outlet holes on its side wall. The air supply pipe is used to spray air onto the filter layer. The water supply pipe and the air supply pipe are arranged at intervals along a first direction.
[0025] With the above structure, when using the filter tank air-water backwashing device provided by this utility model, if filtration is required, first close the water supply pipe and the air supply pipe, then transport the liquid to be filtered from the liquid inlet at the top of the filter tank body into the filter tank body, and then filter the liquid through the filter layer. After filtration, the liquid falls to the bottom of the filter tank body, and finally the filtered liquid is discharged from the filter tank body again through the second drain port at the bottom of the filter tank body. After long-term use, there are too many impurities in the filter layer, which reduces the filtration efficiency. At this time, it is necessary to backwash the filter layer. First close the second drain port located at the bottom of the filter tank body, then connect the water supply pipe and spray water onto the filter layer through the water supply pipe, and at the same time connect the air supply pipe and spray water onto the filter layer through the air supply pipe. The air pipe sprays air into the filter layer. As more and more water enters, the water level in the filter tank gradually rises until it submerges the filter layer. This causes impurities in the filter layer to be carried out of the filter layer by the water flow as the water level rises. When the water level reaches the first drain port, the water is discharged from the first drain port, and the impurities mixed in with the water flow are discharged at the same time, thus achieving the purpose of backwashing the filter layer. Through the setting of the air supply pipe, the sprayed gas not only removes the suspended solids deposited on the surface of the filter layer, but also enhances the flow capacity of the water, further enhancing the purpose of backwashing. Therefore, through the setting of the water supply pipe and the air supply pipe, the backwashing effect of the filter tank air-water backwashing device provided by this utility model is better, thereby improving the backwashing efficiency. Attached Figure Description
[0026] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:
[0027] Figure 1 A schematic diagram of the structure of the filter tank air-water backwashing device provided in this embodiment of the utility model;
[0028] Figure 2 Another structural schematic diagram of the filter tank air-water backwashing device provided in this embodiment of the utility model.
[0029] The attached diagram shows the markings and corresponding component names:
[0030] 1-Filter tank body, 11-Inlet, 12-First outlet, 13-Second outlet, 2-Filter layer, 21-Filter screen, 22-Mounting frame, 3-Water supply pipe, 31-Outlet, 4-Air supply pipe, 41-Air outlet, 5-Main water supply pipe, 6-Divider pipe, 7-First valve, 8-Second valve. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.
[0032] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to that other component.
[0033] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.
[0034] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0035] Example:
[0036] This embodiment provides a filter tank air-water backwashing device to solve the technical problem of poor backwashing effect in existing filters. The filter tank air-water backwashing device includes a filter tank body 1, a filter layer 2, a water supply pipe 3, and an air supply pipe 4, wherein:
[0037] The filter body 1 is a hollow cuboid with a cavity for containing liquid. The top of the filter body 1 is provided with a liquid inlet 11, and the side wall of the filter body 1 is provided with a first drain outlet 12 and a second drain outlet 13, which are located at the upper and lower parts of the filter body, respectively. In this way, by providing a liquid inlet 11 at the top, the wastewater that has cleaned the filter layer 2 is prevented from being discharged from the liquid inlet 11 and contaminating the liquid inlet 11 during backwashing of the filter layer 2.
[0038] The filter layer 2 is installed inside the filter tank body 1. The filter layer 2 is used to filter impurities in the liquid. The filter layer 2 is located between the first drain port 12 and the second drain port 13. That is, the horizontal plane where the filter layer 2 is located is located between the horizontal plane where the first drain port 12 is located and the horizontal plane where the second drain port 13 is located.
[0039] The water supply pipe 3 is installed inside the filter tank body 1. The side wall of the water supply pipe 3 has multiple water outlet holes 31. The water supply pipe 3 is used to spray water onto the filter layer 2. In this way, the water supply pipe 3 sprays water onto the filter layer 2 through the water outlet holes 31, which can effectively wash the filter layer 2 and remove impurities attached to the surface of the filter layer 2. At the same time, the multiple water outlet holes 31 make the filter layer 2 more completely covered, thereby improving the backwashing effect.
[0040] An air supply pipe 4 is installed inside the filter tank body 1. Multiple air outlets 41 are provided on the side wall of the air supply pipe 4. The air supply pipe 4 is used to spray air into the filter layer 2. The water supply pipe 3 and the air supply pipe 4 are discharged at intervals along the first direction, that is, the water supply pipe 3 is located below the air supply pipe 4. In this way, the air supply pipe 4 sprays air into the filter layer 2 through the air outlets 41, which can help loosen and peel off the deposits attached to the surface of the filter layer 2. At the same time, the addition of airflow can promote water flow and further improve the backwashing effect.
[0041] With the above structure, when using the filter tank air-water backwashing device provided by this utility model, if filtration is required, first close the water supply pipe 3 and the air supply pipe 4, then transport the liquid to be filtered from the liquid inlet 11 at the top of the filter tank body 1 into the filter tank body 1, and then filter the liquid through the filter layer 2. After filtration, the liquid falls to the bottom of the filter tank body 1, and finally the filtered liquid is discharged from the filter tank body 1 again through the second drain port 13 at the bottom of the filter tank body 1. After long-term use, there are too many impurities in the filter layer 2, which reduces the filtration efficiency. At this time, it is necessary to backwash the filter layer 2. First close the second drain port 13 at the bottom of the filter tank body 1, then connect the water supply pipe 3 to spray water onto the filter layer 2, and at the same time connect the air supply pipe 4. Air is sprayed through the air supply pipe 4 to the filter layer 2. As more and more water enters, the water level in the filter tank gradually rises until it submerges the filter layer 2. This causes impurities in the filter layer 2 to be carried out of the filter layer 2 by the water flow as the water level rises. When the water level reaches the first drain port 12, the water is discharged from the first drain port 12, and the impurities mixed in with the water flow are discharged at the same time, thereby achieving the purpose of backwashing the filter layer 2. The air supply pipe 4 sprays out gas, and the air pressure can not only strip the suspended solids deposited on the surface of the filter layer 2, but also enhance the flow capacity of the water flow, further enhancing the purpose of backwashing. Therefore, the combination of the water supply pipe 3 and the air supply pipe 4 makes the backwashing effect of the filter tank air-water backwashing device provided by this utility model better, thereby improving the backwashing efficiency.
[0042] An optional implementation of this embodiment is as follows: the water supply pipe 3 is arranged in an S-shape, and multiple water outlet holes 31 are evenly distributed on the outer side wall of the water supply pipe 3. In this way, the space utilization is improved by the S-shaped arrangement of the water supply pipe 3, and the evenly distributed water outlet holes 31 allow the water flow to be sprayed evenly onto the filter layer 2, avoiding concentrated rinsing that would cause local wear and uneven cleaning of the filter layer 2.
[0043] Optionally, the two ends of the water supply pipe 3 are located on the same side of the filter tank body 1, which makes it easier to supply water to the water supply pipe 3 from both ends.
[0044] Optionally, it also includes a main water supply pipe 5, a branch water pipe 6, and a first valve 7, wherein:
[0045] One end of the water supply main pipe 5 is connected to a water source, and the water supply main pipe 5 provides the necessary and stable water flow for backwashing.
[0046] The middle part of the water distribution pipe 6 is connected to the other end of the main water supply pipe 5. The two ends of the water supply pipe 3 are respectively connected to the two ends of the water distribution pipe 6. In this way, the water flow from the main water supply pipe 5 can be effectively distributed to the two ends of the water supply pipe 3, thereby increasing the water intake rate.
[0047] There are two first valves 7, which are installed at both ends of the water supply pipe 3. The two first valves 7 are used to control the opening and closing of the water supply pipe 3. In this way, the setting of the first valves 7 makes it easier to control the opening and closing of the two ends of the water supply pipe 3.
[0048] An optional implementation of this embodiment is as follows: the air supply pipe 4 is also arranged in an S-shape, and multiple air outlets 41 are evenly distributed on the outer side wall of the air supply pipe 4. In this way, the airflow can be evenly sprayed onto the filter layer 2 through the evenly arranged air outlets 41.
[0049] Optionally, it also includes two second valves 8, which are respectively installed at both ends of the gas supply pipe 4. The second valves 8 are used to control the opening and closing of the gas supply pipe 4. In this way, the setting of the second valves 8 makes it easy to control the opening and closing of the gas supply pipe 4.
[0050] An optional implementation of this embodiment is as follows: the projection of the water outlet 31 in the first direction does not coincide with the projection of the air outlet 41 in the first direction, and the projection of the water outlet 31 in the second direction does not coincide with the projection of the air outlet 41 in the second direction. The second direction and the first direction are arranged perpendicular to each other, that is, the water supply pipe 3 and the air supply pipe 4 are arranged alternately. In this way, the air supply pipe 4 is prevented from blocking the water outlet 31, so that the water flow cannot be sprayed toward the filter layer 2.
[0051] An optional implementation of this embodiment is as follows: The filter layer 2 includes three filter screens 21. The three filter screens 21 are installed in the filter tank body 1 along the first direction, and the diameter of the filter holes of the three filter screens 21 gradually decreases along the first direction. In this way, by setting up three layers of filter screens 21 with gradually decreasing filter hole diameters, the liquid to be filtered is filtered in stages, thereby enhancing the filtration effect.
[0052] Optionally, it also includes three mounting frames 22. The three mounting frames 22 are installed in the filter tank body 1 along the first direction, and the three filter screens 21 are respectively installed in the three mounting frames 22. In this way, the mounting frames 22 make it easier to install the filter screens 21.
[0053] Optionally, the three mounting frames 22 are detachably mounted inside the filter tank body 1 by bolts, which makes it easier to replace the filter screen 21 by means of the detachable mounting frames 22.
[0054] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A filter tank air-water backwashing device, characterized in that, include: The filter body (1) has an inlet (11) at the top and a first drain (12) and a second drain (13) on the side wall of the filter body (1), which are located at the upper and lower parts of the filter, respectively. A filter layer (2) is installed inside the filter tank body (1). The filter layer (2) is used to filter impurities in the liquid, and the filter layer (2) is located between the first drain port (12) and the second drain port (13). A water supply pipe (3) is installed inside the filter tank body (1). The side wall of the water supply pipe (3) is provided with multiple water outlet holes (31). The water supply pipe (3) is used to spray water toward the filter layer (2). An air supply pipe (4) is installed inside the filter body (1). The side wall of the air supply pipe (4) is provided with multiple air outlets (41). The air supply pipe (4) is used to spray air towards the filter layer (2). The water supply pipe (3) and the air supply pipe (4) are arranged at intervals along a first direction.
2. The air-water backwashing device for a filter tank according to claim 1, characterized in that, The water supply pipe (3) is arranged in an S-shape, and multiple water outlet holes (31) are evenly distributed on the outer side wall of the water supply pipe (3).
3. The air-water backwashing device for a filter tank according to claim 2, characterized in that, The two ends of the water supply pipe (3) are located on the same side of the filter tank body (1).
4. The air-water backwashing device for a filter tank according to claim 3, characterized in that, Also includes: The main water supply pipe (5) is connected to the water source at one end; The water distribution pipe (6) is connected to the other end of the main water supply pipe (5) in the middle, and the two ends of the water supply pipe (3) are respectively connected to the two ends of the water distribution pipe (6). There are two first valves (7), which are installed at both ends of the water supply pipe (3) respectively. The two first valves (7) are used to control the opening and closing of the water supply pipe (3).
5. The air-water backwashing device for a filter tank according to claim 1, characterized in that, The gas supply pipe (4) is also arranged in an S-shape, and multiple gas outlets (41) are evenly distributed on the outer side wall of the gas supply pipe (4).
6. A filter tank air-water backwashing device according to claim 5, characterized in that, It also includes two second valves (8), which are installed at both ends of the gas pipeline (4) respectively. The second valves (8) are used to control the opening and closing of the gas pipeline (4).
7. A filter tank air-water backwashing device according to claim 6, characterized in that, The projection of the water outlet (31) in the first direction does not coincide with the projection of the air outlet (41) in the first direction, and the projection of the water outlet (31) in the second direction does not coincide with the projection of the air outlet (41) in the second direction. The second direction is perpendicular to the first direction.
8. A filter tank air-water backwashing device according to claim 1, characterized in that, The filter layer (2) includes three filter screens (21). The three filter screens (21) are installed in the filter body (1) along the first direction, and the diameter of the filter holes of the three filter screens (21) gradually decreases along the first direction.
9. A filter tank air-water backwashing device according to claim 8, characterized in that, It also includes three mounting frames (22), which are installed in the filter body (1) along the first direction, and the three filter screens (21) are respectively installed in the three mounting frames (22).
10. A filter tank air-water backwashing device according to claim 9, characterized in that, The three mounting frames (22) are detachably mounted inside the filter body (1) by bolts.