A new filter screen

Abstract

This utility model discloses a novel filter screen, including a filter tank with a filter device inside. The filter device includes a rotating shaft and a rotating disk assembly. Each rotating disk assembly includes multiple fan-shaped frame plates and fiber filter cloth. The fiber filter cloth includes at least two fiber layers, and each fiber layer has several irregular polygonal filter mesh holes, with the area of ​​the outer filter mesh holes being larger than the area of ​​the inner filter mesh holes. This utility model, through its multi-layer composite mesh structure, can perform graded filtration according to the size of impurity particles, greatly improving filtration efficiency and accuracy. The nano-level hydrophilic coating effectively reduces clogging, lowers maintenance costs and time, and extends the service life of the fiber filter tank. This improved filter mesh structure is simple, easy to manufacture and install, and has good market prospects.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a novel filter screen. Background Technology

[0002] Existing fiber filters suffer from problems such as low filtration efficiency, easy clogging, and difficulty in cleaning. Traditional filter mesh structures are relatively simple and cannot meet the filtration needs of impurities of different particle sizes. Moreover, after long-term use, impurities tend to adhere to the mesh, leading to a decrease in filtration efficiency. Cleaning is also difficult to completely remove impurities, increasing maintenance costs and time.

[0003] In view of this, the inventors of this case conducted in-depth research on the above-mentioned problems, which led to the creation of this case. Utility Model Content

[0004] The purpose of this invention is to provide a new type of filter screen that improves filtration efficiency, reduces clogging, and facilitates cleaning and maintenance by improving the filter screen's pore structure.

[0005] To achieve the above objectives, this utility model adopts the following technical solution:

[0006] A novel filter screen includes a filter tank, inside which a filter device is provided. The filter device includes a rotating shaft rotatably mounted on the filter tank and a plurality of turntable assemblies evenly distributed on the rotating shaft. Each turntable assembly includes a plurality of sector-shaped frame plates and a fiber filter cloth covering the outer surface of the sector-shaped frame plates. The fiber filter cloth includes at least two fiber layers, and each fiber layer is provided with a plurality of filter mesh holes with irregular polygonal structures, wherein the area of ​​the filter mesh holes on the outside is larger than the area of ​​the filter mesh holes on the inside.

[0007] Furthermore, the fiber layer consists of three layers, namely the first layer, the second layer, and the third layer from the outside to the inside. The edges of the first layer, the second layer, and the third layer are all chamfered. The openings near the outer edge of the chamfer of the same layer form water inlets, and the openings near the inner edge of the chamfer of the same layer form water outlets. The diameter of the water inlet gradually narrows from the diameter of the water outlet to the diameter of the water outlet of the same layer.

[0008] Furthermore, the center lines of each of the filter mesh holes are on the same straight line, and the cross-section formed by each of the filter mesh holes is trapezoidal.

[0009] Furthermore, the diameter of the filter mesh in the first layer is 0.1-1mm, the diameter of the filter mesh in the second layer is 0.05-0.2mm, and the diameter of the filter mesh in the third layer is 0.01-0.1mm.

[0010] Furthermore, each of the filter mesh openings has a raised nano-scale hydrophilic coating on its outer edge.

[0011] Furthermore, the fiber filter cloth is made of polymer materials such as polyester, polypropylene, and polyamide.

[0012] Furthermore, a cleaning device for cleaning the fiber filter cloth of each of the rotating disk assemblies is installed at the bottom of the filter tank. The cleaning device includes a cleaning pipe fixed inside the filter tank. The cleaning pipe is arranged along the length of the rotating shaft and at the bottom of each of the rotating disk assemblies. A first connecting pipe is detachably arranged along the length of the cleaning pipe that is horizontal and perpendicular to the rotating shaft. At least one second connecting pipe and at least one third connecting pipe are arranged along the length of the first connecting pipe that is vertical and perpendicular to the rotating shaft. The rotation direction of the rotating disk assembly is defined as forward and backward. A scraper is arranged on each of the second connecting pipes facing the two rotating disk assemblies. A cleaning brush is arranged on each of the third connecting pipes facing the two rotating disk assemblies. The scraper is located at the rear end of the cleaning brush. The scraper and the cleaning brush abut against the fiber filter cloth for cleaning the fiber filter cloth.

[0013] Furthermore, the cleaning device also includes a cleaning pump located outside the filter tank. The cleaning pipe is provided with a first through hole at the connection point of each of the first connecting pipes, the second connecting pipe is provided with a second through hole at the connection point of the second connecting pipe and the scraper, and the third connecting pipe is provided with a third through hole at the connection point of the third connecting pipe and the cleaning brush. The cleaning pipe, the first through hole, the second through hole and the third through hole are all connected to each other, and the cleaning pipe is connected to the cleaning pump.

[0014] Furthermore, a clear water pool is provided outside the filter pool, and a communication port is provided between the clear water pool and the filter pool. The rotating shaft is located in the filter pool near the communication port, and the rotating shaft is connected to the clear water pool through the communication port. An inlet pipe is fixed on the side of the filter pool away from the clear water pool, and an outlet pipe is connected to the end of the clear water pool away from the filter pool.

[0015] Furthermore, a drive device for driving the rotating shaft is provided at the top of the filter tank. The drive device includes a motor and a driven sprocket wound around the surface of the rotating shaft. The drive end of the motor is connected to a driving sprocket, and a chain is sleeved between the driving sprocket and the driven sprocket.

[0016] By adopting the aforementioned design scheme, the beneficial effects of this utility model are:

[0017] 1. The multi-layer composite mesh structure can perform graded filtration according to the size of impurity particles, which greatly improves filtration efficiency and filtration accuracy.

[0018] 2. The nano-level hydrophilic coating effectively reduces clogging, lowers maintenance costs and time, and extends the service life of the fiber filter.

[0019] 3. The improved filter mesh structure is simple, easy to manufacture and install, and has good market prospects. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention applied to a fiber disc filter tank;

[0021] Figure 2 This is a schematic diagram of the structure of the first connecting pipe, the second connecting pipe, and the third connecting pipe in this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the fiber filter cloth in this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of this utility model;

[0024] In the diagram: Filter tank 1, Inlet pipe 11, Inlet weir 12, Clear water tank 2, Connecting port 21, Outlet pipe 22, Outlet weir 23, Rotating shaft 31, Turntable assembly 32, Fan-shaped frame plate 321, Fiber filter cloth 322, First layer 3221, Second layer 3222, Third layer 3223, Filter mesh 323, Motor 41, Chain 44, Cleaning device 5, Cleaning pipe 51, First connecting pipe 52, First through hole 521, Second connecting pipe 53, Second through hole 531, Third connecting pipe 54, Third through hole 541, Scraper 55, Cleaning brush 56, Cleaning pump 57. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The reference provided by this utility model Figures 1 to 4 :

[0027] For ease of description, the rotation direction of the turntable assembly 32 (which will be described in detail below) is defined as forward, and the reverse is backward.

[0028] A novel fiber disc filter includes a filter tank 1 and a clear water tank 2 disposed beside the filter tank 1. A connection port 21 is provided between the clear water tank 2 and the filter tank 1. An inlet pipe 11 is fixed to the side of the filter tank 1 away from the clear water tank 2, and an outlet pipe 22 is connected to the end of the clear water tank 2 away from the filter tank 1. Preferably, an inlet weir 12 is provided in the filter tank 1 near the inlet pipe 11, and an outlet weir 23 is provided in the clear water tank 2 near the outlet pipe 22.

[0029] The filter tank 1 is equipped with a filtration device, which includes a rotating shaft 31 rotatably installed inside the filter tank 1 and several rotating disk assemblies 32 evenly distributed on the rotating shaft 31. The rotating shaft 31 is located near the connecting port 21 in the filter tank 1. The rotating shaft 31 is connected to the clear water tank 2 through the connecting port 21. Wastewater enters the filter tank 1 through the inlet pipe 11, is filtered by several fiber filter cloths 322 (described in detail below) on the rotating disk assembly 32, enters the rotating shaft 31, flows to the connecting port 21, and then flows out through the outlet pipe 22 in the clear water tank 2.

[0030] Specifically, each turntable assembly 32 includes multiple sector-shaped frame plates 321 and a fiber filter cloth 322 covering the outer surface of the sector-shaped frame plates 321. Each sector-shaped frame plate 321 has an insertion tube fixed to the side near the rotating shaft 31. The side wall of the rotating shaft 31 has an insertion hole for inserting the insertion tube. The sector-shaped frame plate 321 is detachably connected to the insertion hole of the rotating shaft 31 through the insertion tube. When installing the sector-shaped frame plate 321, the insertion tube is first inserted into the insertion hole, so that the inside of the sector-shaped frame plate 321 is connected to the inside of the rotating shaft 31 through the insertion tube. Water filtered by the fiber filter cloth 322 can then enter the inside of the rotating shaft 322 along the insertion tube.

[0031] Furthermore, a drive device for rotating the shaft 31 is provided at the top of the filter tank 1. The drive device includes a motor 41 and a driven sprocket 42 wound around the surface of the shaft 31. The drive end of the motor 41 is connected to a driving sprocket 43, and a chain 44 is sleeved between the driving sprocket 43 and the driven sprocket 42. Under the transmission action of the chain 44, the motor 41 can drive the shaft 31 to rotate in the filter tank 1, thereby driving the turntable assembly 32 to rotate.

[0032] A cleaning device 5 for cleaning the fiber filter cloth 322 of each rotating disc assembly 32 is installed at the bottom of the filter tank 1. The cleaning device 5 includes a cleaning pipe 51 fixed inside the filter tank 1. The cleaning pipe 51 is arranged at the bottom of each rotating disc assembly 32 along the length direction of the rotating shaft 31. A first connecting pipe 52 is detachably arranged on the cleaning pipe 51 in a horizontal direction perpendicular to the axis of the rotating shaft 31. At least one second connecting pipe 53 and at least one third connecting pipe 54 are arranged vertically on the first connecting pipe 52. A scraper 55 is arranged on each of the second connecting pipes 53 facing the two rotating disc assemblies 32. A cleaning brush 56 is arranged on each of the third connecting pipes 54 facing the two rotating disc assemblies 32. The scraper 55 is arranged at the rear end of the cleaning brush 56. The scraper 55 and the cleaning brush 56 abut against the fiber filter cloth 322 for cleaning the fiber filter cloth 322.

[0033] Furthermore, the cleaning device 5 also includes a cleaning pump 57 located outside the filter tank 1. The cleaning pipe 51 is provided with a first through hole 521 at the connection point of each first connecting pipe 52, the second connecting pipe 53 is provided with a second through hole 531 at the connection point of the scraper 55, and the third connecting pipe 54 is provided with a third through hole 541 at the connection point of the cleaning brush 56. The cleaning pipe 51, the first through hole 521, the second through hole 531 and the third through hole 541 are all connected, and the cleaning pipe 51 is connected to the cleaning pump 57. When it is necessary to rinse the sludge on the surface of the fiber filter cloth 322, the cleaning pump 57 is started, and water is pumped into the cleaning pump 57 through the cleaning pipe 51. The water then flows into the first connecting pipe 52 and then flows to the second connecting pipe 53 and the third connecting pipe 54 respectively. With the rotation of the turntable assembly 32, the scraper 55 on the second connecting pipe 53 first scrapes off the dirt on the surface of the fiber filter cloth 322, and then the cleaning brush 56 on the third connecting pipe 54 sweeps away the scraped impurities, ensuring the cleanliness of the surface of the fiber filter cloth 322. The fiber filter cloth 322 is cleaned twice, which can thoroughly clean it and improve work efficiency.

[0034] Furthermore, the fiber filter cloth 322 comprises at least two fiber layers, each fiber layer having a plurality of irregular polygonal filter mesh holes 323, with the area of ​​the outer filter mesh holes 323 being larger than the area of ​​the inner filter mesh holes 323. It is worth noting that in this embodiment, the outer edge of each filter mesh hole 323 is provided with a raised nano-scale hydrophilic coating (not shown in the figure), adding a micro-nano-scale textured structure to the surface of the filter mesh holes 323. Through physical and chemical treatment, the surface of the filter mesh holes 323 acquires hydrophilicity and anti-fouling properties, further reducing the adhesion of impurities to the surface of the filter mesh holes 323 and lowering the risk of clogging. When backwashing is performed, the impact force of the water flow and the characteristics of the coating can more easily wash away the attached impurities. The fiber filter cloth 322 is made of polymer materials such as polyester, polypropylene, and polyamide.

[0035] Furthermore, the fiber layer consists of three layers, namely, layer 3221, layer 3222, and layer 3223 from the outside in. The edges of layers 3221, 3222, and 3223 are all chamfered. The openings near the outer edge of the chamfer within the same layer form inlets, while the openings near the inner edge form outlets. The diameter of the inlet gradually narrows towards the outlet within the same layer. The filter mesh 323 of layers 3221, 3222, and 3223 can be square, hexagonal, and octagonal, respectively. Compared to traditional circular or square meshes, these have longer edges, increasing the filtration area and reducing resistance to water flow, thus improving filtration efficiency.

[0036] The first layer, 3221, can initially filter larger particles of impurities, effectively reducing the burden on subsequent filtration layers. The second layer, 3222, is a transition layer that further filters impurities, intercepting smaller particles of impurities that have passed through the coarse filtration layer. The third layer, 3223, has the smallest aperture, which can precisely filter tiny particles, ensuring that the filtered water meets high standards.

[0037] Furthermore, the center lines of each filter mesh 323 are on the same straight line, and the cross-section formed by each filter mesh 323 is trapezoidal. That is, in the central area of ​​the filter mesh 323, the filter mesh 323 is smaller and denser, while in the area near the outer edge, the filter mesh 323 gradually increases in size and decreases in density. This distribution method can effectively guide the water flow, making the filtration more uniform and reducing local blockage.

[0038] Furthermore, the filter mesh 323 of the first layer 3221 has a diameter of 0.1-1mm, the filter mesh 323 of the second layer 3222 has a diameter of 0.05-0.2mm, and the filter mesh 323 of the third layer 3223 has a diameter of 0.01-0.1mm.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used merely 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. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel filter screen, characterized in that: The device includes a filter tank, inside which a filtration device is installed. The filtration device includes a rotating shaft rotatably mounted on the filter tank and several turntable assemblies evenly distributed on the rotating shaft. Each turntable assembly includes multiple sector-shaped frame plates and a fiber filter cloth covering the outer surface of the sector-shaped frame plates. The fiber filter cloth includes at least two fiber layers, and each fiber layer is provided with several irregular polygonal filter mesh holes, with the area of ​​the filter mesh holes on the outside being larger than the area of ​​the filter mesh holes on the inside.

2. The novel filter screen according to claim 1, characterized in that: The fiber layer consists of three layers, namely, the first layer, the second layer, and the third layer from the outside to the inside. The edges of the first layer, the second layer, and the third layer are all chamfered. The openings near the outer edge of the chamfer of the same layer form water inlets, and the openings near the inner edge of the chamfer of the same layer form water outlets. The diameter of the water inlet gradually narrows from the diameter of the water outlet to the diameter of the water outlet of the same layer.

3. The novel filter screen according to claim 2, characterized in that: The center lines of each of the filter mesh holes are on the same straight line, and the cross-section formed by each of the filter mesh holes is trapezoidal.

4. A novel filter screen according to claim 2, characterized in that: The filter mesh diameter of the first layer is 0.1-1mm, the filter mesh diameter of the second layer is 0.05-0.2mm, and the filter mesh diameter of the third layer is 0.01-0.1mm.

5. A novel filter screen according to claim 1, characterized in that: Each of the filter mesh openings has a raised nano-scale hydrophilic coating on its outer edge.

6. A novel filter screen according to claim 1, characterized in that: A cleaning device for cleaning the fiber filter cloth of each of the rotating disk assemblies is installed at the bottom of the filter tank. The cleaning device includes a cleaning pipe fixed inside the filter tank. The cleaning pipe is arranged along the length of the rotating shaft and at the bottom of each of the rotating disk assemblies. A first connecting pipe is detachably arranged along the length of the cleaning pipe that is horizontal and perpendicular to the rotating shaft. At least one second connecting pipe and at least one third connecting pipe are arranged along the length of the first connecting pipe that is vertical and perpendicular to the rotating shaft. The rotation direction of the rotating disk assembly is defined as forward and backward. A scraper is arranged on each of the second connecting pipes facing the two rotating disk assemblies. A cleaning brush is arranged on each of the third connecting pipes facing the two rotating disk assemblies. The scraper is located at the rear end of the cleaning brush. The scraper and the cleaning brush abut against the fiber filter cloth for cleaning the fiber filter cloth.

7. A novel filter screen according to claim 6, characterized in that: The cleaning device also includes a cleaning pump located outside the filter tank. The cleaning pipe is provided with a first through hole at the connection of each of the first connecting pipes, the second connecting pipe is provided with a second through hole at the connection of the second connecting pipe and the scraper, and the third connecting pipe is provided with a third through hole at the connection of the third connecting pipe and the cleaning brush. The cleaning pipe, the first through hole, the second through hole and the third through hole are all connected to each other, and the cleaning pipe is connected to the cleaning pump.

8. A novel filter screen according to claim 6, characterized in that: A clear water pool is provided outside the filter pool, and a communication port is provided between the clear water pool and the filter pool. The rotating shaft is located in the filter pool near the communication port and is connected to the clear water pool through the communication port. An inlet pipe is fixed on the side of the filter pool away from the clear water pool, and an outlet pipe is connected to the end of the clear water pool away from the filter pool.

9. A novel filter screen according to claim 6, characterized in that: The top of the filter tank is provided with a drive device for driving the rotating shaft to rotate. The drive device includes a motor and a driven sprocket wound around the surface of the rotating shaft. The drive end of the motor is connected to a driving sprocket, and a chain is sleeved between the driving sprocket and the driven sprocket.

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