Side filter

Abstract

The utility model relates to the technical field of filters, in particular to a side filter which comprises an upper cylinder (7), the upper cylinder (7) is arranged on a lower seal head (4), a filter layer (18) is filled in the upper cylinder (7), and a sieve tube water distributor (12) is arranged above the filter layer (18); connecting pieces (20) are arranged at the two ends of the screen pipe water distributor (12), the screen pipe water distributor (12) is connected with supporting lugs (10) through the connecting pieces (20), and the supporting lugs (10) are installed on the inner wall of the upper barrel body (7). A connecting pipe (17) is arranged on the screen pipe water distributor (12), and a water inlet pipe (16) is arranged on the connecting pipe (17); a wound gasket (15) with an inner ring and an outer ring is arranged between connecting flanges of the connecting pipe (17) and the water inlet pipe (16); and the filter layer (18) is in a double-layer filter material form. A screen pipe water distribution mode is adopted, sand leakage is avoided during backwashing, smoothness of a water inlet pipe is ensured, and the situation that filter materials need to be added and manpower is increased due to filter material loss is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a side filter. Background Art

[0002] Industrial wastewater treatment has always been one of the major environmental challenges faced worldwide. There is no obstruction on the outlet of backwash sewage above the filter layer of the existing filter, and sand runs away during backwashing.

[0003] The activated carbon filter disclosed in the relevant reference CN218686646U has a water pipe port Ⅰ on the top of its cylinder, which distributes water to the filter bed through a baffle, but the baffle is a circular curved surface on all sides, and is fixedly connected to the top surface of the upper cylinder by a connecting rod. Sand will escape during backwashing, and the sand will flow out of the water pipe port Ⅰ together with the sewage, causing the filter material in the upper cylinder to be lost. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a side filter which can prevent sand from running away and filter material from being lost during backwashing.

[0005] In order to solve the above technical problems, the utility model provides a side filter, including an upper cylinder, a water inlet pipe is arranged on the top of the upper cylinder, a filter layer is filled in the upper cylinder, the upper cylinder is arranged on a lower head, and a water outlet pipe is arranged at the bottom of the lower head; a screen tube water distributor is arranged above the filter layer; connecting pieces are arranged at both ends of the screen tube water distributor, the screen tube water distributor is connected to the support ears through the connecting pieces, and the support ears are installed on the inner wall of the upper cylinder; a connecting pipe is arranged on the screen tube water distributor, and a water inlet pipe is arranged on the connecting pipe; a winding pad with an inner ring and an outer ring is arranged between the connecting flange of the connecting pipe and the water inlet pipe; the filter layer is in the form of a double-layer filter material.

[0006] By adopting the above technical solution, a screen tube water distributor is installed above the filter layer. The screen tube water distributor is installed on the inner wall of the upper cylinder through the support ears. The screen tube water distribution method is adopted to ensure that sand does not escape during backwashing, ensure that the water inlet pipe is unobstructed, and avoid the need to add filter material due to filter material loss and increase labor.

[0007] Preferably, the filter layer is arranged on a partition, the partition is provided with a through hole, a long-handled filter head is arranged through the through hole, and the arrangement density of the long-handled filter head is ≮50 / m 2 .

[0008] By adopting the above technical solution, long-handled filter heads are evenly installed on the partitions, so that clean water after filtration is evenly collected during filtration and backwash water is evenly distributed during backwashing.

[0009] Preferably, a support is provided on the inner bottom surface of the lower head, a support cavity is provided on the bottom surface of the partition, and the upper end of the support is inserted into the support cavity.

[0010] By adopting the above technical solution, the pillars are directly erected in the pillar cavities on the bottom surface of the partition, and the partition can be installed in place without a support platform or a nut, thereby simplifying the structure and saving production costs.

[0011] Preferably, an epoxy resin layer is provided on the inner walls of the upper cylinder and the lower head, and the thickness of the epoxy resin layer is ≮120µm.

[0012] By adopting the above technical solution, the corrosion resistance of the upper cylinder and the lower head is improved through the epoxy resin layer.

[0013] Preferably, an observation window and an upper manhole are provided on the upper cylinder, and a lower manhole is provided on the lower head.

[0014] By adopting the above technical solution, observation mirrors and inspection manholes are arranged on the upper cylinder and the lower head to ensure convenient equipment maintenance and replacement of filter materials.

[0015] Preferably, a backwash gas inlet is provided on the bottom surface of the lower head.

[0016] By adopting the above technical solution, aeration is performed during backwashing, so that the filter material can be cleaned more thoroughly.

[0017] Preferably, a pad is provided on the outer side wall of the upper cylinder, and a guardrail connecting piece is provided on the top surface of the upper cylinder.

[0018] By adopting the above technical solution, the upper cylinder is welded to the ladder through the pad to avoid the upper cylinder from being damaged, and the upper cylinder is deformed freely due to the influence of welding heat.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The utility model installs a screen tube water distributor above the filter layer. The screen tube water distributor is installed on the inner wall of the upper cylinder through the support ear. The screen tube water distribution method is adopted to ensure that no sand will escape during backwashing, ensure that the water inlet pipe is unobstructed, and avoid the need to add filter material and increase labor due to filter material loss.

[0021] 2. The pillars of the utility model are directly erected in the pillar cavities on the bottom surface of the partition, and the partition can be installed in place without a support platform or a nut, which simplifies the structure and saves manufacturing costs.

[0022] 3. The bottom surface of the lower head of the utility model is provided with a backwashing air inlet, and aeration is performed during backwashing to make the filter material cleaned more thoroughly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional view of the utility model.

[0024] Figure 2 It is a schematic diagram of the connection between the screen tube water distributor and the upper cylinder of the utility model.

[0025] Figure 3This is a schematic diagram of the connection between the screen tube water distributor and the water inlet pipe of the utility model.

[0026] Figure 4 It is a schematic diagram of the support cavity on the bottom surface of the partition of the utility model.

[0027] Figure number: 1. Flange, 2. Long-handled filter head, 3. Lower manhole, 4. End cap, 5. Partition, 6. Discharge hole, 7. Upper cylinder, 8. Observation window, 9. Upper manhole, 10. Support ear, 11. Guardrail connector, 12. Screen tube water distributor, 13. Support, 14. Support cavity, 15. Wrapped pad, 16. Water inlet pipe, 17. Connecting pipe, 18. Filter layer, 19. Pad, 20. Connector, 21. Backwash gas inlet. DETAILED DESCRIPTION

[0028] like Figure 1 As shown, the side filter includes an upper cylinder 7, and the upper cylinder 7 is arranged on the lower head 4. After the rust is removed from the inner surface of the inner wall of the upper cylinder 7 and the lower head 4, an epoxy resin anti-corrosion layer is sprayed and cured at high temperature or room temperature. The thickness of the epoxy resin layer is ≮120µm, which improves the corrosion resistance of the upper cylinder 7 and the lower head 4. An inlet pipe 16 is arranged on the top of the upper cylinder 7, and an outlet pipe 1 is arranged on the bottom of the lower head 4. A filter layer 18 is filled in the upper cylinder 7. The filter layer 18 is in the form of a double-layer filter material, the upper layer is anthracite filter material, and the lower layer is quartz sand filter material. The anthracite filter material should be hard and durable anthracite particles, and should not contain visible shale, soil or debris impurities. In the smokeless filter material, the density is greater than 1.8g / cm 3 The heavy matter content should not exceed 8%. The sum of the crushing rate and the wear rate of the anthracite filter media should not exceed 2% (by mass). The quartz sand filter media should be hard, durable and dense particles. It should be resistant to corrosion during processing, filtering and flushing, and its silicon content (in terms of SiO2) should not be less than 85%. The quartz sand filter media should not contain visible soil, dust, mica or organic impurities. The incineration reduction of quartz sand filter media should not exceed 0.7%. The density is less than 2 g / cm 3 The light material content should not be greater than 0.2%.

[0029] A screen tube water distributor 12 is arranged above the filter layer 18. The filter layer 18 is arranged on a partition 5, and a through hole is opened on the partition 5, through which a long-handled filter head 2 is arranged. The arrangement density of the long-handled filter head 2 is ≮50 pieces / m 2 , it can evenly collect the filtered clean water during filtration, and evenly distribute the backwash water during backwashing.

[0030] An observation window 8 and an upper manhole 9 are provided on the upper cylinder 7, and a lower manhole 3 is provided on the lower end cap 4. The upper cylinder 7 is provided with an inspection manhole and an observation mirror, which are convenient for replacing filter materials and inspection. An inspection manhole is also provided on the lower end cap 4, making equipment inspection more convenient. A backwash gas inlet 21 is provided on the bottom surface of the lower end cap 4, and aeration is provided during backwashing to make the filter materials cleaned more cleanly.

[0031] A pad 19 is provided on the outer wall of the upper cylinder 7, a guardrail connector 11 is provided on the top surface of the upper cylinder 7, and a ladder is welded to the upper cylinder 7 through the pad 19 to prevent the upper cylinder 7 from being damaged and the upper cylinder 7 from being deformed freely due to the influence of welding heat. The ladder is extended to the guardrail to facilitate personnel to inspect and repair the valve on the top surface of the upper cylinder 7. Three supports are evenly distributed on the outer bottom surface of the lower head 4, and a grounding plate is provided on the supports.

[0032] like Figure 2 As shown, connectors 20 are provided at both ends of the screen tube water distributor 12 , and the screen tube water distributor 12 is connected to the support ear 10 through the connector 20 , and the support ear 10 is installed on the inner wall of the upper cylinder 7 .

[0033] like Figure 3 As shown, a connecting pipe 17 is provided on the screen tube water distributor 12, and a water inlet pipe 16 is provided on the connecting pipe 17; a spiral wound gasket 15 is provided between the connecting flanges of the connecting pipe 17 and the water inlet pipe 16. The spiral wound gasket 15 is in accordance with the SH / T3407 standard, and is a spiral wound gasket 15 with an inner ring and an outer ring suitable for the raised flange sealing surface. The gasket material is 304 / FG, wherein the inner ring material is 304, and the outer ring material is carbon steel. The present application installs a screen tube water distributor 12 above the filter layer 18, and the screen tube water distributor 12 is installed on the inner wall of the upper cylinder 7 through the support ear 10. The screen tube water distribution method is adopted to ensure that sand does not escape during backwashing, ensure that the water inlet pipe is unobstructed, and avoid the need to add filter material and increase labor due to the loss of filter material.

[0034] like Figure 4 As shown, a support 13 is provided on the inner bottom surface of the lower head 4, a support cavity 14 is provided on the bottom surface of the partition 5, and the upper end of the support 13 is inserted into the support cavity 14. The support 13 is directly erected in the support cavity 14 on the bottom surface of the partition 5, and the partition 5 can be installed in place without a support platform or a nut, which simplifies the structure and saves the production cost.

[0035] During filtration, the sewage to be filtered enters from the top water inlet pipe 16, passes through the screen tube water distributor 12, and is evenly sprayed on the double-layer filter material. The double-layer filter material adsorbs solid particles and suspended matter in the water. The filtered clean water flows from the partition 5 equipped with the long-handled filter head 2 to the lower head 4 and flows out from the outlet pipe 1. During backwashing, clean water is input from the outlet pipe 1, and compressed air is input from the backwashing air inlet 21. The double-layer filter material is backwashed through the partition 5 equipped with the long-handled filter head 2, and the retained matter adsorbed on the double-layer filter material is peeled off and carried away by the water flow to restore the adsorption function. The water after backwashing flows out of the water inlet pipe 16 through the screen tube water distributor 12, effectively avoiding the loss of filter material.

[0036] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed or modified in any way.

Claims

1. A side filter, comprising an upper cylinder (7), a water inlet pipe (16) being arranged at the top of the upper cylinder (7), and a filter layer (18) being filled in the upper cylinder (7), characterized in that: The upper cylinder (7) is arranged on the lower end cap (4), and a water outlet pipe (1) is arranged at the bottom of the lower end cap (4); a screen tube water distributor (12) is arranged above the filter layer (18); connecting pieces (20) are arranged at both ends of the screen tube water distributor (12), and the screen tube water distributor (12) is connected to a support ear (10) through the connecting piece (20), and the support ear (10) is installed on the inner wall of the upper cylinder (7); a connecting pipe (17) is arranged on the screen tube water distributor (12), and a water inlet pipe (16) is arranged on the connecting pipe (17); a spiral wound pad (15) with an inner ring and an outer ring is arranged between the connecting flanges of the connecting pipe (17) and the water inlet pipe (16); and the filter layer (18) is in the form of a double-layer filter material.

2. The side filter according to claim 1, characterized in that: The filter layer (18) is arranged on a partition (5), the partition (5) is provided with a through hole, a long-handled filter head (2) is arranged through the through hole, and the arrangement density of the long-handled filter heads (2) is ≮50 pieces / m 2 .

3. The side filter according to claim 2, characterized in that: A support (13) is provided on the inner bottom surface of the lower head (4), a support cavity (14) is provided on the bottom surface of the partition (5), and the upper end of the support (13) is inserted into the support cavity (14).

4. The side filter according to claim 1, characterized in that: An epoxy resin layer is provided on the inner walls of the upper cylinder (7) and the lower head (4), and the thickness of the epoxy resin layer is ≮120µm.

5. The side filter according to claim 4, characterized in that: An observation window (8) and an upper manhole (9) are provided on the upper cylinder (7), and a lower manhole (3) is provided on the lower end cover (4).

6. The side filter according to claim 1, characterized in that: A backwash gas inlet (21) is provided on the bottom surface of the lower end cover (4).

7. The side filter according to claim 1, characterized in that: A pad (19) is provided on the outer side wall of the upper cylinder (7).

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