Deep filtration backwashing filter

Abstract

The utility model discloses a deep filtration backwashing filter which comprises a cylinder body, an upper sealing head is arranged at the top of the cylinder body, a lower sealing head is arranged at the bottom of the cylinder body, a manhole assembly is arranged at the top of the upper sealing head, a liquid inlet is formed in one side of the upper sealing head, a liquid outlet is formed in one side of the lower sealing head, and supporting legs are further arranged on the outer side of the cylinder body; an oil suction assembly is arranged in the cylinder body, the lower part of the oil suction assembly is connected with a discharging assembly, the discharging assembly penetrates through the lower sealing head and extends to the outer side, and a backwashing assembly is further mounted on the other side of the lower sealing head; according to the utility model, the filtering principle of deep filtering is adopted, the thick filtering layer can directly separate, intercept and capture oil stains, meanwhile, the filtering material of the thick filtering layer is strong in oil absorption capacity, large in overall oil absorption quantity and good in oil absorption effect, the equipment can be subjected to hot water backwashing design and bubbling scrubbing, and the cost of production consumables is saved; and through the design of the hollow pipe and the discharging pipe, personnel can be prevented from entering the filter tank body to replace the oil absorption filter material, and meanwhile, the filter material is discharged more conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of deep filtration backwash filters. BACKGROUND

[0002] In the production process of chemical materials, various mixed liquids with different surface tensions and viscosities are often produced. Surface filtration cannot achieve separation. For example, waste liquid is discharged from each station in the production process. Oil floats on the surface of the liquid, causing waste oil to adhere to the inner wall of the subsequent discharge pipeline, and the subsequent treatment equipment has a heavy load and is difficult to handle.

[0003] The existing oil removal filter bag filter uses oil-absorbing felt with a slightly thicker thickness than ordinary filter bags as the filter material. Due to the fixed thickness of the felt filter layer, the filter often leaks oil during filtration. Compared with deep filtration, the effect is generally poor. In some cases, due to the small total volume of a single felt, the total amount of oil absorption is small, resulting in poor oil absorption capacity of the filter and causing filtration or clogging. The oil-absorbing felt filter bag is a filter consumable that needs to be replaced frequently. The filter bag after adsorbing oil is difficult to handle and is usually incinerated, but this can cause new environmental treatment burdens.

[0004] Therefore, it is necessary to invent a deep filtration backwash filter to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] (I) Utility model purpose

[0006] To solve the technical problems in the background art, the utility model provides a deep filtration backwash filter that can enhance oil absorption capacity.

[0007] (II) Technical solution

[0008] To achieve the above purpose, the utility model provides the following technical solution: a deep filtration backwash filter, comprising a cylinder, an upper head on the top of the cylinder, a lower head on the bottom of the cylinder, a manhole assembly on the top of the upper head, a liquid inlet on one side of the upper head, a liquid outlet on one side of the lower head, and a support leg on the outside of the cylinder.

[0009] The cylinder is internally provided with an oil absorption assembly, and the lower part of the oil absorption assembly is connected to a discharge assembly. The discharge assembly extends to the outside through the lower head, and a backwash assembly is also installed on the other side of the lower head.

[0010] The oil absorption assembly includes an upper perforated plate and a lower perforated plate arranged inside the cylinder. The upper perforated plate and the lower perforated plate are filled with oil-absorbing filter material. The middle part of the upper perforated plate and the lower perforated plate is provided with a hollow tube. The lower part of the middle part of the lower perforated plate is connected to the discharge assembly together with the hollow tube.

[0011] Preferably, the hollow pipe is provided with an upper sealing ring and a lower sealing ring respectively at the connecting part of the upper porous plate and the lower porous plate, and the lower sealing ring is arranged between the discharge assembly and the outer wall of the hollow pipe.

[0012] Preferably, the discharge assembly comprises a discharge pipe, one end of the discharge pipe is connected to the lower porous plate, the other end of the discharge pipe extends to the outside through the lower head, and the discharge pipe is provided with a discharge port, and the discharge port is externally provided with a lower cover.

[0013] Preferably, the manhole assembly comprises a manhole, the manhole is arranged at the top of the upper head, and the top of the manhole is provided with an upper cover, and the upper cover is provided with an upper outlet upwardly at the top of the upper cover.

[0014] Preferably, the backwashing assembly is arranged below the lower porous plate, and comprises a backwashing pipe, the backwashing pipe is arranged on one side of the lower head and extends to the inside of the lower head and is connected with an annular pipe, the lower part of the annular pipe is provided with a plurality of small holes, the end of the backwashing pipe is provided with a backwashing port, and the backwashing pipe is further connected with an air inlet outside the backwashing pipe.

[0015] Preferably, the upper porous plate and the lower porous plate are arranged in the cylinder body and located between the upper head and the lower head, and the length of the hollow pipe exceeds the distance between the upper porous plate and the lower porous plate.

[0016] Preferably, the upper head is provided with a sight glass.

[0017] Compared with the prior art, the beneficial effects of the above technical scheme of the utility model are:

[0018] 1. The utility model adopts the filtering principle of deep filtration, thick filter layer can directly separate, intercept and capture oil stains, the oil absorption capacity of thick filter layer is strong, the total oil absorption amount is large, the oil absorption filter layer can be made to have high thickness, the oil absorption effect is good, the equipment can be designed for hot water backwashing and bubble scrubbing, and the production material cost is saved.

[0019] 2. The design of the hollow pipe and the discharge pipe in the utility model can avoid the entry of personnel into the filter tank body to replace the oil absorption filter material, and the discharge of the oil absorption filter material is more convenient. DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the utility model, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0021] Fig. 1 It is a whole structure schematic view of the utility model.

[0022] Fig. 2 It is the whole backwashing process schematic view of the utility model;

[0023] Fig. 3 It is the split discharge structure schematic view of the utility model.

[0024] Mark explanation:

[0025] 1, cylinder; 2, upper head; 21, liquid inlet; 22, sight glass; 3, lower head; 31, liquid outlet; 4, manhole assembly; 41, manhole; 42, upper cover; 43, upper outlet; 5, support leg; 6, oil suction assembly; 61, upper perforated plate; 62, lower perforated plate; 63, oil suction filter material; 64, hollow tube; 65, upper sealing ring; 66, lower sealing ring; 7, discharge assembly; 71, discharge pipe; 72, discharge port; 73, lower cover; 8, backwashing assembly; 81, backwashing pipe; 82, annular pipe; 83, small hole; 84, backwashing port; 85, gas inlet. Specific implementation

[0026] In order to make those skilled in the art better understand the technical scheme of the utility model, the utility model will be further introduced in detail below in conjunction with the drawings.

[0027] The utility model provides a kind of deep filtration backwashing filter as Figs. 1-3 As shown in the figure, including cylinder 1, cylinder 1 top is equipped with upper head 2, bottom is equipped with lower head 3, upper head 2 top is equipped with manhole assembly 4, one side of upper head 2 is equipped with liquid inlet 21, one side of lower head 3 is equipped with liquid outlet 31, cylinder 1 outside is also equipped with support leg 5;

[0028] Specifically, cylinder 1 inside is equipped with oil suction assembly 6, oil suction assembly 6 lower portion is connected with discharge assembly 7, discharge assembly 7 passes through lower head 3 and extends to outside, and lower head 3 other side is also installed with backwashing assembly 8;

[0029] Refer to Figs. 1-2 Oil suction assembly 6 includes upper perforated plate 61 and lower perforated plate 62 arranged in the inside of cylinder 1, oil suction filter material 63 is filled between upper perforated plate 61 and lower perforated plate 62, hollow tube 64 is commonly arranged in the middle of upper perforated plate 61 and lower perforated plate 62, and discharge assembly 7 is connected to the lower portion of the middle of lower perforated plate 62 and hollow tube 64.

[0030] Specifically, hollow tube 64 and the connecting part of upper perforated plate 61 and lower perforated plate 62 are respectively equipped with upper sealing ring 65 and lower sealing ring 66, and lower sealing ring 66 is arranged between discharge assembly 7 and the outer wall of hollow tube 64.

[0031] In this embodiment, the two hole plates can allow liquid to pass through, while preventing the oil filter 63 from flowing to the liquid outlet 31 during normal filtration, and preventing the oil dirt of the oil filter 63 from being flushed to the upper outlet 43 during backwashing. The upper porous plate 61 and the lower porous plate 62, together with the upper sealing ring 65 and the lower sealing ring 66 arranged between the upper porous plate 61 and the hollow tube 64, can prevent the oil dirt from flowing to the liquid outlet 31 from the gap.

[0032] Referring to Figs. 1-2 The discharge assembly 7 includes a discharge pipe 71, the end of which is connected to the lower porous plate 62, and the other end extends to the outside through the lower head 3, and is provided with a discharge port 72, and the outside of the discharge port 72 is provided with a lower cover 73.

[0033] Specifically, the manhole assembly 4 includes a manhole 41 arranged at the top of the upper head 2, and the top of the manhole 41 is provided with an upper cover 42, and the top of the upper cover 42 is provided with an upper outlet 43 upwardly.

[0034] Specifically, the backwashing assembly 8 is located below the lower porous plate 62, and includes a backwashing pipe 81 mounted on one side of the lower head 3 and extending into the inside thereof and connected with an annular pipe 82, the lower part of the annular pipe 82 is provided with a plurality of small holes 83, and the end of the backwashing pipe 81 is provided with a backwashing port 84, and the outside of the backwashing pipe 81 is further connected with an air inlet 85.

[0035] Specifically, the upper porous plate 61 and the lower porous plate 62 are arranged in the cylinder 1 and located between the upper head 2 and the lower head 3, and the length of the hollow tube 63 exceeds the distance between the upper porous plate 61 and the lower porous plate 62.

[0036] Specifically, the upper head 2 is provided with a sight glass 22.

[0037] In this embodiment, the oil-containing wastewater enters the inside of the filter horizontally through the liquid inlet 21, and as the flow area increases rapidly, the flow rate of the oil-containing wastewater also decreases sharply, reaching a relatively static state. In addition, the floating oil in the wastewater has a small density, and the floating oil is collected upwardly in the upper head 2, and can be discharged externally intermittently through the upper outlet 43 for a certain period of time, which can achieve a certain oil removal effect.

[0038] Specifically, the upper porous plate 61 disperses the oil-containing wastewater and makes it flow downwardly uniformly, the oil filter 63 adsorbs the oil on the outer surface thereof, the wastewater continues to flow downwardly, slowly penetrates through the entire thickness of the oil filter 63 layer, and then passes through the lower porous plate 62 to gather in the lower head 3 and flow to the liquid outlet 31. The oil in the wastewater can be adsorbed to a suitable content by filling the oil filter layer 63 to a suitable height.

[0039] In this embodiment, when the filter runs for a period of time, backwashing can be performed, hot water is transported into the annular pipe 82 through the backflushing port 84, the annular pipe 82 is only provided with a plurality of small holes 83 downward, after the hot water is sprayed downward, the hot water is homogenized by backfolding after contacting the lower head 3, the hot water flows upward through the lower perforated plate 62, the oil-absorbing filter material 63 is backwashed, the upper perforated plate 61 can intercept the oil-absorbing filter material 63, and the oil and dirt adsorbed outside the upper perforated plate 61 is washed away by the hot water, collected through the upper outlet 43 and discharged. The oil-absorbing filter material 63 can also be backwashed by the air inlet port 85 to improve the backwashing effect and regenerate the oil-absorbing filter material 63 to a greater extent.

[0040] In this embodiment, the discharge pipe 71 is connected with the lower perforated plate 62 and coaxially communicated with the hollow pipe 64, when the oil-absorbing filter material 63 needs to be discharged and replaced, the manhole 41 is opened, the hollow pipe 64 is pulled out, the oil-absorbing filter material 63 is collapsed to the discharge pipe 71, the lower cover 73 is opened, the oil-absorbing filter material 63 can be discharged through the discharge port 72, the oil-absorbing material 63 which is not collapsed to the center can be manually pushed out to the center channel of the discharge pipe 71 by using a long rod tool, the manual entry into the dangerous limited space is avoided, and the discharge port 72 vertically downward can place a garbage can to collect the oil-absorbing filter material 63, and the process does not drip oil to pollute the ground.

[0041] The above only describes some exemplary embodiments of the present application in a descriptive manner, without doubt, for ordinary skilled in the art, the described embodiments can be modified in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of protection of the present application.

Claims

1. A deep bed backwash filter characterized by: The utility model provides a kind of oil absorption device, including cylinder (1), the upper head (2) is equipped in the top of the cylinder (1), the lower head (3) is equipped in the bottom, the upper head (2) top is equipped with manhole assembly (4), the upper head (2) one side is equipped with liquid inlet (21), the lower head (3) one side is equipped with liquid outlet (31), the cylinder (1) outside is also equipped with support leg (5); The cylinder (1) is internally provided with an oil suction assembly (6), the oil suction assembly (6) is connected with a discharge assembly (7) at the lower part, the discharge assembly (7) extends to the outside through the lower head (3), and a backwashing assembly (8) is further installed on the other side of the lower head (3); The oil suction assembly (6) includes an upper perforated plate (61) and a lower perforated plate (62) arranged inside the cylinder (1), the upper perforated plate (61) and the lower perforated plate (62) are filled with oil absorption filter material (63), and the upper perforated plate (61) and the lower perforated plate (62) are jointly provided with a hollow tube (64) at the middle part, and the lower perforated plate (62) is connected with the discharge assembly (7) at the lower part of the middle part and the hollow tube (64).

2. A deep bed backwash filter according to claim 1 wherein: The hollow tube (64), the upper perforated plate (61) and the lower perforated plate (62) are connected with an upper sealing ring (65) and a lower sealing ring (66) respectively, and the lower sealing ring (66) is arranged between the discharge assembly (7) and the outer wall of the hollow tube (64).

3. A deep bed backwash filter according to claim 2 wherein: The discharge assembly (7) includes a discharge pipe (71), the discharge pipe (71) is connected with the lower perforated plate (62) at one end and extends to the outside through the lower head (3) at the other end, and is provided with a discharge port (72), and the discharge port (72) is provided with a lower cover (73) outside.

4. A deep bed backwash filter according to claim 1 wherein: The manhole assembly (4) includes a manhole (41), the manhole (41) is arranged on the top of the upper head (2), and the manhole (41) is provided with an upper cover (42) at the top, and the upper cover (42) is provided with an upper outlet (43) upward at the top.

5. A deep bed backwash filter according to claim 1 wherein: The backwashing assembly (8) is located below the lower perforated plate (62) and includes a backwashing pipe (81), the backwashing pipe (81) is installed on one side of the lower head (3) and extends to the inside and is connected with an annular pipe (82), the annular pipe (82) is provided with a plurality of small holes (83) at the lower part, the backwashing pipe (81) is provided with a backwashing port (84) at one end, and the backwashing pipe (81) is further connected with an air inlet (85) outside.

6. A deep bed backwash filter according to claim 1 wherein: The upper perforated plate (61) and the lower perforated plate (62) are arranged in the cylinder (1) and located between the upper head (2) and the lower head (3), and the length of the hollow tube (64) exceeds the distance between the upper perforated plate (61) and the lower perforated plate (62).

7. A deep bed backwash filter according to claim 1 wherein: The upper head (2) is provided with a sight glass (22).

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