Duplex fiber filter

Abstract

The utility model discloses a duplex fiber filter, and particularly relates to the technical field of water treatment filters, the duplex fiber filter comprises two filters arranged side by side, the top ends of the two filters are both communicated with an inlet pipe for sewage to flow in, and the bottom ends of the front sides of the two filters are both communicated with an outlet pipe for treated water to flow out; the bottom ends of the two filters are communicated with a backwashing pipe so as to inject water into the filters for backwashing, each filter comprises a filtering tank, and a filtering disc for filtering sewage, a cobblestone supporting layer and a filtering material layer are sequentially arranged in each filtering tank from bottom to top. The water distribution pipe capable of distributing water is driven to move downwards, so that the water distribution pipe rotates at the top of the filter material layer, the surface of the filter material layer is flattened, the uniformity of the filtering effect of all positions in the filter is ensured, the water distribution pipe can distribute water and can flatten the surface of the filter material layer, one object has multiple purposes, the functions of the water distribution pipe are enriched, and the water distribution pipe is suitable for popularization and application. And the practicability of the utility model can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment filters, more specifically to a double-connected fiber filter. Background Art

[0002] Comet fiber filters are an advanced, rapid, deep-bed filtration technology based on comet-type fiber media. They are widely used in wastewater treatment, drinking water purification, and chemical wastewater treatment. They combine the advantages of fiber media for high filtration precision and high pollutant interception with the high backwash cleanliness and low water consumption of particulate media. Comet fiber media is an asymmetric fractal structure, with a loose fiber bundle at one end, known as the "comet tail," and a denser "comet nucleus" at the other. This adaptive structure forms a near-ideal filter bed within the filter: The porosity distribution across the bed's horizontal cross-section is uniform, ensuring consistent flow channel size during filtration. This directly results in uniform pollutant interception and prevents short-circuiting. The porosity distribution across the bed's vertical cross-section decreases from top to bottom, forming a gradient of increasing porosity at the top and decreasing at the bottom. Because of the adaptability of the comet-type fiber filter media to form the filter bed and the ultra-high specific surface area and porosity of the fiber itself, the fiber filter can achieve high-speed and high-precision filtration.

[0003] Due to the unique structure of the comet fiber, the comet fiber filter disclosed in prior art publication number CN210331788U also has a backwash function. During backwashing, the difference in specific gravity between the comet nucleus and comet tail fiber tows can cause solid particles attached to the surface of the comet fiber filter media impacted by the backwash water flow to fall off, thereby ensuring good regeneration performance of the filter media layer. At the same time, due to the backwash design, the filter media surface will be uneven after backwashing, resulting in uneven distribution of filter media within the filter. Since the thickness of the filter media layer is proportional to the water filtration effect, this results in poor filtration performance in filter media layers with thinner thickness, which in turn affects the overall filtration performance of the filter.

[0004] In addition, although the service life of comet-type fiber is as long as more than ten years, it needs to be replenished in time through the filling port on one side of the filter during use. Since the filling port is set on one side of the filter, the replenished filter material will accumulate on the side close to the filling port, which may easily cause the filter material layer to have different thicknesses. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a double-type fiber filter, which drives the water distribution pipe to move downward and rotate it on the top of the filter layer to flatten the surface of the filter layer, thereby ensuring the uniformity of the filtering effect at various positions inside the present invention, so as to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a double-type fiber filter, comprising two filters arranged side by side, the top ends of the two filters are connected to an inlet pipe for sewage to flow in, the bottom ends of the front sides of the two filters are connected to an outlet pipe for treated water to flow out, and the bottom ends of the two filters are connected to a backwash pipe for injecting water into the filter for backwashing, the filter comprising a filter tank, the interior of the filter tank being provided with a filter disc for filtering sewage, a pebble support layer, and a filter material layer from bottom to top;

[0007] The top of the filter tank is connected to a water inlet pipe, and a plurality of water distribution pipes are provided on the top of the filter material layer. The sewage in the inlet pipe flows into the water distribution pipe through the water inlet pipe and then is discharged through the water distribution pipe to achieve water distribution. A driving member for driving the water distribution pipe to rotate and lift is provided between the water distribution pipe and the water inlet pipe;

[0008] The driving member includes a short tube fixed in the middle of multiple water distribution pipes. The top end of the short tube is connected to a retractable bellows. The extended short tube can drive the water distribution pipe to move downward and contact the top of the filter material layer. The top end of the bellows is provided with a rotatable rotating tube. The top end of the rotating tube passes through the filter tank and extends out of the top of the filter tank. The top end of the rotating tube is connected to the inside of the water inlet pipe. The rotating rotating tube drives the water distribution pipe to move downward to flatten the top of the filter material layer.

[0009] In a preferred embodiment, two partitions distributed upper and lower are fixed inside the short tube, and the two partitions divide the interior of the short tube into an upper chamber, a middle chamber, and a lower chamber. One end of the water distribution pipe is connected to the lower chamber of the short tube, and a connecting pipe is fixed between the two partitions. The connecting pipe connects the upper chamber and the lower chamber. An electromagnetic valve is fixed on the outer wall of the connecting pipe. After closing the electromagnetic valve, the water injected into the bellows through the water inlet pipe continues to increase, thereby pushing the bellows to extend downward.

[0010] In a preferred embodiment, the bottom end of the rotating tube is fixed to the top end of the bellows by bolts, and the top end of the short tube is connected to the bottom end of the bellows by a flange;

[0011] A plurality of vertical rods are fixed to the bottom end of the rotating tube, and the bottom ends of the vertical rods sequentially pass through the top end of the corrugated tube, the bottom end of the corrugated tube and the bottom end of the short tube and extend to the bottom of the water distribution pipe. The outer end of each vertical rod is covered with a spring, and the spring is fixed between the top end and the bottom end of the corrugated tube.

[0012] In a preferred embodiment, a plurality of floating blocks are fixed to the bottom end of the bellows, and the plurality of floating blocks are staggered with the vertical rods.

[0013] In a preferred embodiment, the top end of the rotating tube is movably connected to a transfer box via a bearing, the transfer box is fixed to the top end of the filter tank via a bracket, and the top end of the transfer box is movably connected to the bottom end of the water inlet connecting pipe via a bearing;

[0014] A gear a is fixed to the outer wall of the rotating tube, and a gear b is engaged with one side of the gear a. A motor is provided on the top of the gear b to drive the gear b to rotate. The rotating gear b drives the gear a to rotate the rotating tube, and then drives the corrugated pipe, the short pipe and the water distribution pipe at the outer end of the short pipe to rotate through the rotating tube.

[0015] In a preferred embodiment, both sides of the bottom end of the water distribution pipe are processed into inclined surfaces, and a through hole communicating with the interior of the water distribution pipe is opened on the inclined surface.

[0016] In a preferred embodiment, the filter disc is composed of a filter plate and a filter head, and the filter material layer is composed of comet-type fiber filter material.

[0017] In a preferred embodiment, the bottom end of the front side of the filter tank is connected to a water outlet pipe, the water outlet pipe is connected to the outlet pipe, the bottom end of the filter is connected to a backwash pipe, the backwash pipe is connected to the backwash pipe, and the water outlet pipe and the backwash pipe are both located below the filter disc;

[0018] The filter tank is provided with a filling port for filling comet-type fiber filter material on the other side of the water outlet pipe.

[0019] The technical effects and advantages of this utility model are:

[0020] 1. By utilizing a motor to drive four water distribution pipes to rotate inside the filter tank, uniform water distribution is achieved. At the same time, water is injected into the bellows to extend the bellows, thereby driving the water distribution pipes downward. The rotating water distribution pipes are utilized to flatten the uneven surface of the filter material layer, thereby ensuring the consistency of the filtering performance at each position inside the utility model. Moreover, the water distribution pipes in the utility model can both distribute water and flatten the surface of the filter material layer, thus being multi-purpose, thereby enriching the functions of the water distribution pipes themselves and further improving the practicality of the utility model.

[0021] 2. By setting the cross-section of the water distribution pipe to a flat top and pointed bottom shape, and processing the bottom end of the water distribution pipe into a slope, not only can the filter material be prevented from adhering to the bottom of the water distribution pipe, but the through hole for water distribution in the water distribution pipe is opened on the slope, and the sprayed water can further prevent the filter material from adhering to the water distribution pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the first view of the overall structure of the utility model;

[0023] Figure 2 This is the second view of the overall structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the filter of the present invention;

[0025] Figure 4 For the utility model Figure 3 Enlarged view of part A in the middle;

[0026] Figure 5 This is a cross-sectional view of the filter tank of the present utility model;

[0027] Figure 6 This is a structural diagram of the water distribution pipe, bellows and short pipe of the utility model.

[0028] The accompanying drawings are:

[0029] 1. Filter; 2. Inlet pipe; 3. Outlet pipe; 4. Backwash pipe;

[0030] 11. Filter tank; 12. Water inlet pipe; 13. Water outlet pipe; 14. Backwash pipe; 15. Filling port; 16. Filter plate; 17. Pebble support layer; 18. Filter media layer; 19. Water distribution pipe; 20. Drive unit;

[0031] 201. Short tube; 202. Bellows; 203. Rotating tube; 204. Transfer box; 205. Partition; 206. Connecting tube; 207. Solenoid valve; 208. Gear a; 209. Gear b; 210. Motor; 211. Vertical rod; 212. Spring; 213. Float. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Refer to the instruction manual Figure 1 The utility model provides a double-connected fiber filter, comprising two filters 1 arranged side by side, the top ends of the two filters 1 are connected to the inlet pipe 2 for sewage to flow in, the front bottom ends of the two filters 1 are connected to the outlet pipe 3 for treated water to flow out, and the bottom ends of the two filters 1 are connected to the backwash pipe 4 to inject water into the filter 1 for backwashing. The two filters 1 arranged side by side in the utility model realize double connection, which can treat sewage at the same time to improve water treatment efficiency;

[0034] like Figure 2 and Figure 3As shown, the filter 1 includes a filter tank 11, and the filter tank 11 is provided with a filter disc 16 for filtering sewage, a pebble support layer 17 and a filter material layer 18 from bottom to top. The filter disc 16 is composed of a filter plate and a filter head, and the filter head is mounted on the filter plate. The filter material layer 18 is composed of comet-type fiber filter material. The comet-type fiber filter material is an asymmetric fractal structure with a loose fiber bundle at one end, called a "comet tail", and the fiber bundle at the other end is fixed in a denser "comet nucleus", which can adaptively form a filter bed close to an ideal state in the filter.

[0035] In addition, a water outlet pipe 13 is connected to the bottom end of the front side of the filter tank 11, and the water outlet pipe 13 is connected to the outlet pipe 3. A backwash pipe 14 is connected to the bottom end of the filter 1, and the backwash pipe 14 is connected to the backwash pipe 4. The water outlet pipe 13 and the backwash pipe 14 are both located below the filter disc 16. By flushing water into the backwash pipe 14, the filter material layer 18 can be backwashed to remove impurities adhered to the filter material. Moreover, a filling port 15 for filling comet-type fiber filter material is provided on the other side of the filter tank 11 relative to the water outlet pipe 13. The filling port 15 can facilitate the replenishment of comet-type fiber filter material to the inside of the filter tank 11 at any time.

[0036] In order to ensure the uniformity of water distribution, the utility model is connected to the top of the filter tank 11 with a water inlet pipe 12, and a plurality of water distribution pipes 19 are provided on the top of the filter material layer 18. The sewage in the inlet pipe 2 flows into the water distribution pipe 19 through the water inlet pipe 12 and is then discharged through the water distribution pipe 19 to achieve water distribution;

[0037] A driving member 20 for driving the water distribution pipe 19 to rotate and lift is provided between the water distribution pipe 19 and the water inlet connecting pipe 12; Figure 4 and Figure 5 As shown, the driving member 20 includes a short tube 201 fixed in the middle of a plurality of water distribution pipes 19, the top of the short tube 201 is connected to a retractable bellows 202, the extended short tube 201 can drive the water distribution pipe 19 to move downward and contact the top of the filter material layer 18, the top of the bellows 202 is provided with a rotatable rotating tube 203, the top of the rotating tube 203 passes through the filter tank 11 and extends out of the top of the filter tank 11, the top of the rotating tube 203 is movably connected to a transfer box 204 through a bearing, the transfer box 204 is fixed to the top of the filter tank 11 through a bracket, the top of the transfer box 204 and the bottom end of the water inlet connecting pipe 12 are movably connected through a bearing, and the rotating tube 203 is communicated with the inside of the water inlet connecting pipe 12 through the transfer box 204;

[0038] A gear a208 is fixed on the outer wall of the rotating tube 203, and a gear b209 is engaged with one side of the gear a208. A motor 210 is provided on the top of the gear b209 to drive the gear b209 to rotate. When in use, by starting the motor 210, the short tube 201 is used to drive the gear b209 and the gear a208 engaged with the gear b209 to rotate, so that the rotating gear a208 can drive the rotating tube 203 and the bellows 202 and the short tube 201 connected to the bottom end of the rotating tube 203 to rotate, and finally drive the water distribution pipe 19 to rotate inside the filter tank 11 through the short tube 201. If water is injected into the water inlet pipe 12 at this time, the rotating water distribution pipe 19 can evenly inject water into the filter tank 11, thereby realizing the water distribution function.

[0039] Furthermore, in order to ensure that the rotating tube 203 can drive the bellows 202 to rotate, as shown in FIG. Figure 4-6 As shown, the bottom end of the rotating tube 203 is fixed to the top end of the bellows 202 by bolts, and the top end of the short tube 201 is connected to the bottom end of the bellows 202 by a flange. A plurality of vertical rods 211 are fixed to the bottom end of the rotating tube 203, and the bottom ends of the vertical rods 211 pass through the top end of the bellows 202, the bottom end of the bellows 202 and the bottom end of the short tube 201 in sequence and extend to the bottom of the water distribution pipe 19. By arranging a plurality of hard vertical rods 211 on the outside of the flexible and deformable bellows 202, since the top end of the vertical rods 211 is fixed to the rotating tube 203, the rotating rotating tube 203 can drive the bellows 202 to rotate through the vertical rods 211, and then can drive the short tube 201 and the water distribution pipe 19 at the bottom end of the bellows 202 to rotate.

[0040] To ensure that the thickness of each part of the filter layer 18 is consistent after backwashing and filter material replenishment, Figure 4As shown, the utility model is fixed with two upper and lower partitions 205 inside the short tube 201, and the two partitions 205 divide the interior of the short tube 201 into an upper cavity, a middle cavity, and a lower cavity. One end of the water distribution pipe 19 is connected to the lower cavity of the short tube 201, and a connecting pipe 206 is fixed between the two partitions 205. The connecting pipe 206 connects the upper cavity and the lower cavity. The outer wall of the connecting pipe 206 is fixed with a solenoid valve 207. When the surface of the filter material layer 18 is uneven due to backwashing and replenishing the filter material, the solenoid valve 207 can be closed to prevent the water in the bellows 202 from flowing out through the lower cavity of the short tube 201. At this time, as the water in the bellows 202 As the volume of water continues to increase, the water inside the bellows 202 will push the bellows 202 to extend downward, and the bottom end of the extended bellows 202 will push the short tube 201 and the water distribution pipe 19 to move downward until it moves to the lowest end. At this time, the bottom end of the water distribution pipe 19 will contact the surface of the filter layer 18. Driven by the above-mentioned motor 210, the water distribution pipe 19 will rotate on the top of the filter layer 18, thereby pushing the raised filter material to one side to fill the recessed position, thereby achieving the effect of flattening the surface of the filter layer 18, so as to ensure the consistency of the thickness of each part of the filter layer 18, thereby ensuring the uniformity of the filtering effect at each position inside the utility model.

[0041] This structural arrangement enables the water distribution pipe 19 in the present invention to simultaneously have the functions of distributing water and flattening the filter material layer 18 , thus achieving multiple uses and further improving the practicality of the present invention.

[0042] Moreover, both sides of the bottom end of the water distribution pipe 19 are processed into inclined surfaces. The setting of the inclined surface can prevent the filter material from adhering to the water distribution pipe 19. A through hole connected to the inside of the water distribution pipe 19 is also opened on the inclined surface. Water will flow out through the through hole and can also wash away the filter material stuck to the bottom end of the water distribution pipe 19.

[0043] After flattening the surface of the filter material layer 18, it is necessary to reset the water distribution pipe 19. The utility model has a spring 212 on the outer end of each vertical rod 211. The spring 212 is fixed between the top and the bottom of the bellows 202. When the bellows 202 extends downward, the spring 212 will be stretched. After the flattening operation is completed, the water inlet in the inlet pipe 2 is first shut off, and then the solenoid valve 207 is opened. After the water in the bellows 202 is discharged, the previously stretched spring 212 can pull the bottom end of the bellows 202 to move up and reset.

[0044] In addition, it is worth noting that the water level in the present invention is below the water distribution pipe 19, which is beneficial to protect the spring 212 and the bellows 202. In order to prevent the spring 212 from being immersed in edema due to excessive water injection into the filter tank 11, Figure 6As shown, a plurality of floats 213 are fixed at the bottom end of the bellows 202, and the plurality of floats 213 are staggered with the vertical rods 211. The arrangement of the floats 213 can keep the bellows 202 and the spring 212 above the water surface at all times, which helps prevent impurities from adhering to the bellows 202 and the spring 212 and causing damage to the spring 212.

[0045] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A double-type fiber filter, comprising two filters (1) arranged side by side, the top ends of the two filters (1) are connected to an inlet pipe (2) for sewage to flow in, the front bottom ends of the two filters (1) are connected to an outlet pipe (3) for treated water to flow out, and the bottom ends of the two filters (1) are connected to a backwash pipe (4) for injecting water into the filter (1) for backwashing, characterized in that: The filter (1) comprises a filter tank (11), wherein a filter disc (16) for filtering sewage, a pebble support layer (17) and a filter material layer (18) are sequentially arranged inside the filter tank (11) from bottom to top; The top of the filter tank (11) is connected to a water inlet connecting pipe (12), and a plurality of water distribution pipes (19) are provided on the top of the filter material layer (18). Sewage in the inlet pipe (2) flows into the water distribution pipe (19) through the water inlet connecting pipe (12) and is then discharged through the water distribution pipe (19) to achieve water distribution. A driving member (20) for driving the water distribution pipe (19) to rotate and lift is provided between the water distribution pipe (19) and the water inlet connecting pipe (12); The driving member (20) comprises a short tube (201) fixed in the middle of a plurality of water distribution pipes (19); the top end of the short tube (201) is connected to a retractable bellows (202); the extended short tube (201) can drive the water distribution pipe (19) to move downward and contact the top of the filter material layer (18); the top end of the bellows (202) is provided with a rotatable rotating tube (203); the top end of the rotating tube (203) passes through the filter tank (11) and extends out of the top of the filter tank (11); the top end of the rotating tube (203) is connected to the inside of the water inlet connecting pipe (12); the rotating rotating tube (203) drives the water distribution pipe (19) that has moved downward to flatten the top of the filter material layer (18).

2. A double fiber filter according to claim 1, characterized in that: Two partitions (205) distributed up and down are fixed inside the short tube (201). The two partitions (205) divide the interior of the short tube (201) into an upper cavity, a middle cavity, and a lower cavity. One end of the water distribution pipe (19) is connected to the lower cavity of the short tube (201). A connecting pipe (206) is fixed between the two partitions (205). The connecting pipe (206) connects the upper cavity and the lower cavity. A solenoid valve (207) is fixed on the outer wall of the connecting pipe (206). After the solenoid valve (207) is closed, the water injected into the bellows (202) through the water inlet connecting pipe (12) increases continuously, thereby pushing the bellows (202) to extend downward.

3. The double fiber filter according to claim 1, characterized in that: The bottom end of the rotating tube (203) is fixed to the top end of the bellows (202) by means of bolts, and the top end of the short tube (201) is connected to the bottom end of the bellows (202) by means of a flange; A plurality of vertical rods (211) are fixed to the bottom end of the rotating tube (203), and the bottom ends of the vertical rods (211) sequentially penetrate the top end of the bellows (202), the bottom end of the bellows (202), and the bottom end of the short tube (201) and extend to the bottom of the water distribution pipe (19). The outer end of each vertical rod (211) is sleeved with a spring (212), and the spring (212) is fixed between the top end of the bellows (202) and the bottom end of the bellows (202).

4. A double fiber filter according to claim 3, characterized in that: A plurality of floating blocks (213) are fixed to the bottom end of the bellows (202), and the plurality of floating blocks (213) and the vertical rods (211) are distributed in an alternating manner.

5. The double fiber filter according to claim 1, characterized in that: The top end of the rotating tube (203) is movably connected to a transfer box (204) via a bearing. The transfer box (204) is fixed to the top end of the filter tank (11) via a bracket. The top end of the transfer box (204) is movably connected to the bottom end of the water inlet connecting pipe (12) via a bearing. A gear a (208) is fixed to the outer wall of the rotating tube (203), and a gear b (209) is meshed with one side of the gear a (208). A motor (210) is provided on the top of the gear b (209) to drive the gear b (209) to rotate. The rotating gear b (209) drives the gear a (208) to drive the rotating tube (203) to rotate, and then drives the corrugated tube (202), the short tube (201) and the water distribution pipe (19) at the outer end of the short tube (201) to rotate through the rotating tube (203).

6. The double fiber filter according to claim 1, characterized in that: Both sides of the bottom end of the water distribution pipe (19) are processed into inclined surfaces, and a through hole communicating with the interior of the water distribution pipe (19) is opened on the inclined surface.

7. The double fiber filter according to claim 6, characterized in that: The filter disc (16) is composed of a filter plate and a filter head, and the filter material layer (18) is composed of comet-type fiber filter material.

8. The double fiber filter according to claim 7, characterized in that: The bottom end of the front side of the filter tank (11) is connected to a water outlet connecting pipe (13), the water outlet connecting pipe (13) is connected to the outlet pipe (3), the bottom end of the filter (1) is connected to a backwash connecting pipe (14), the backwash connecting pipe (14) is connected to the backwash pipe (4), and the water outlet connecting pipe (13) and the backwash connecting pipe (14) are both located below the filter disc (16); The filter tank (11) is provided with a filling port (15) for filling comet-type fiber filter material on the other side relative to the water outlet connecting pipe (13).

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