Filter assembly for oil-water separation tank

Abstract

The utility model relates to the technical field of oil-water filtration, in particular to a filter component for an oil-water separation tank, which comprises a cylindrical cover with two sealed ends, a window is arranged on the bottom side of the cylindrical cover, a double-layer impurity filter screen is rotatably arranged in the cylindrical cover, and the outer wall of the double-layer impurity filter screen is attached to the inner wall of the cylindrical cover to rotate. The middle of the double-layer impurity filter screen is filled with a hydrophobic and oleophylic filter screen or an oleophobic and hydrophilic filter screen, impurity filtering and oil-water separation filtering are synchronously carried out, a pressurizing air pipe is arranged on the portion, close to the top, of one end wall of the barrel-shaped cover in a penetrating mode, and a filtering cavity defined by the double-layer impurity filter screen and the barrel-shaped cover is pressurized through the pressurizing air pipe. The device is used for improving the filtering efficiency of impurity and oil-water separation in a filtering cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-water filtering, in particular to a filtering component for an oil-water separation box. Background Art

[0002] Oil-water filtration separation is the process of separating oil and water by physical or chemical methods. It is often used in the field of environmental protection to treat oily wastewater. The oil is filtered out through a filter made of hydrophobic and oleophilic or oleophobic and hydrophilic materials, while the water flows out through the filter.

[0003] Oily wastewater often contains a large amount of oily impurities. It is difficult to quickly filter the impurities using only hydrophobic oleophilic or oleophobic hydrophilic filters. Therefore, it is necessary to use a conventional filter to first filter the large particles of impurities, and then use a hydrophobic oleophilic or oleophobic hydrophilic filter to separate the oil and water. For example, the public (announcement) number is: CN220237826U, an oil-water separation equipment for oil production. In the above scheme, the impurity filter and the oil-water separation filter are arranged at different positions, and the impurity filtration and oil-water separation cannot be completed simultaneously, and need to be operated separately, resulting in a larger overall volume of the filter component and complicated operation. The pressurized gas only acts on oil-water separation, and cannot enhance the filtration of impurities. Utility Model Content

[0004] The utility model aims at at least solving the problem in the prior art that impurity filtering and oil-water separation cannot be completed synchronously.

[0005] The present invention provides a filter assembly for an oil-water separation box, which is achieved by the following specific technical means: it comprises a cylindrical cover with both ends blocked, a window is provided on the bottom side of the cylindrical cover, and a double-layer impurity filter is rotatably provided inside the cylindrical cover, the outer wall of the double-layer impurity filter rotates in contact with the inner wall of the cylindrical cover, and the middle of the double-layer impurity filter is filled with a hydrophobic and oleophilic filter or an oleophobic and hydrophilic filter, so as to realize simultaneous impurity filtering and oil-water separation filtering, and a pressurized air pipe is penetrated by one end wall of the cylindrical cover near the top, so as to simultaneously improve the filtering efficiency of impurities and oil-water separation in the filter cavity.

[0006] Preferred technical solution 1: the end of the cylindrical cover provided with a pressurized air pipe is also penetrated by a liquid injection pipe;

[0007] The cylindrical cover is provided with a pressurized air pipe at one end thereof and is also penetrated by a liquid discharge pipe near the bottom side.

[0008] Preferred technical solution two: a connecting shaft is rotatably penetrated on the other end wall of the cylindrical cover away from the pressurized air pipe, and a baffle fixedly sleeved on the inner end of the connecting shaft is fixed on the inner wall of the double-layer impurity filter screen, and the rotation of the double-layer impurity filter screen is driven by the rotation of the connecting shaft.

[0009] Preferred technical solution three: A cleaning mechanism is also provided inside the cylindrical cover, and the cleaning mechanism is used to clean the top of the inner wall of the double-layer impurity filter.

[0010] Preferred technical solution four: the connecting shaft is a hollow sleeve shaft structure, the cleaning mechanism includes a cross bar that rotates and slides through the connecting shaft, a collecting cover is fixed to the top side of the inner end of the cross bar, an arc-shaped scraper is fixed to the top of the collecting cover, the arc-shaped scraper is in contact with the inner wall of the double-layer impurity filter, and the top wall of the double-layer impurity filter is scraped and cleaned by the arc-shaped scraper, and the scraped impurities fall into the collecting cover.

[0011] Preferred technical solution five: the cross bar is a hollow tube and is connected to the bottom of the collection cover.

[0012] The above structure enables this solution to have the following beneficial effects:

[0013] 1. The double-layer impurity filter is filled with a hydrophobic oleophilic filter or an oleophobic hydrophilic filter in the middle to achieve simultaneous impurity filtration and oil-water separation filtration, reduce the overall volume, reduce the complexity of operation, and by pressurizing the cylindrical cover, it can simultaneously improve the filtration efficiency of impurities and oil-water separation, and improve the utilization rate of pressurized gas;

[0014] 2. The setting of the cleaning mechanism can actively remove impurities, and there is no need to stop the machine during the cleaning process, which improves the continuity of filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0017] Figure 2 This is a cross-sectional view of this scheme;

[0018] Figure 3 This is the upper view of this scheme;

[0019] Figure 4 This is a schematic diagram of the structure of the double-layer impurity filter of this scheme;

[0020] Figure 5 This is the exploded diagram of this solution.

[0021] Among them, 1. cylindrical cover, 101. window, 2. double-layer impurity filter, 3. oil-water separation filter, 4. pressurized air pipe, 5. injection pipe, 6. discharge pipe, 7. connecting shaft, 8. baffle, 9. cleaning mechanism, 901. cross bar, 902. collecting cover, 903. arc scraper, 10. transmission gear, 11. motor, 12. driving gear. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 3 , a filter assembly for an oil-water separation box comprises a cylindrical cover 1 with both ends blocked, a window 101 is provided on the bottom side of the cylindrical cover 1, and a double-layer impurity filter screen 2 is provided for rotation inside the cylindrical cover 1, and the outer wall of the double-layer impurity filter screen 2 rotates in contact with the inner wall of the cylindrical cover 1, and the double-layer impurity filter screen 2 is composed of an inner filter screen and an outer filter screen located outside the inner filter screen, and the annular cavity formed between the inner filter screen and the outer filter screen is filled with an oil-water separation filter screen 3, and the inner filter screen realizes filtering of impurities in wastewater, and the oil-water separation filter screen 3 is a hydrophobic oleophilic filter screen or an oleophobic hydrophilic filter screen, which is used for oil-water separation. The double-layer impurity filter 2 and the oil-water separation filter 3 are structurally arranged to realize the simultaneous impurity filtration and oil-water separation filtration. A pressurized air pipe 4 is provided near the top of one end wall of the cylindrical cover 1. The pressurized air pipe 4 is externally connected to a pressurized air pump. The pressurized air pipe 4 is used to increase the pressure in the filter cavity surrounded by the double-layer impurity filter 2 and the cylindrical cover 1, so as to simultaneously improve the filtration efficiency of impurities and oil-water separation in the filter cavity. In the filtration process, the double-layer impurity filter 2 is rotated to change the part involved in the filtration, so as to avoid the problem of easy clogging of the filtration at a single part, thereby improving the continuity of the filtration.

[0024] One end of the cylindrical cover 1 provided with a pressurized air pipe 4 is also penetrated by an injection pipe 5, which is used to inject oily wastewater into the filter chamber through the injection pipe 5, and the injection pipe 5 is externally connected to a supply pipe containing wastewater; one end of the cylindrical cover 1 provided with a pressurized air pipe 4 is also penetrated by a drain pipe 6 near the bottom side, and the drain pipe 6 and the window 101 are used to discharge the oil and water after separation; control valves are provided in the pressurized air pipe 4, the injection pipe 5 and the drain pipe 6.

[0025] See also Figure 1-Figure 2, a filter assembly for an oil-water separation box, a connecting shaft 7 is rotatably penetrated on the other end wall of the cylindrical cover 1 away from the pressurized air pipe 4, a baffle 8 fixedly sleeved on the inner end of the connecting shaft 7 is fixed on the inner wall of the double-layer impurity filter 2 and blocks the port of the double-layer impurity filter 2, and the rotation of the double-layer impurity filter 2 is driven by the rotation of the connecting shaft 7 to change the part involved in the filtration, a transmission gear 10 is fixedly sleeved on the connecting shaft 7, and a motor 11 is fixed on the cylindrical cover 1, and a driving gear 12 fixedly sleeved on the output shaft of the motor 11 is meshed with the transmission gear 10, and the rotation control of the connecting shaft 7 is realized by the motor 11.

[0026] See also Figure 1-Figure 5 , a filter assembly for an oil-water separation box, a cleaning mechanism 9 is also provided in the cylindrical cover 1, and the cleaning mechanism 9 is used to clean the top of the inner wall of the double-layer impurity filter 2, that is, to clean the top part of the double-layer impurity filter 2 which is not in a working state; the connecting shaft 7 is a hollow shaft structure, and the cleaning mechanism 9 includes a cross bar 901 which rotates and slides through the connecting shaft 7, and a collecting cover 902 is fixed to the top side of the inner end of the cross bar 901, and an arc-shaped scraper 903 is fixed to the top opening of the collecting cover 902, and the arc-shaped scraper 903 contacts the inner wall of the double-layer impurity filter 2, and the arc-shaped scraper 903 is driven by the cross bar 901 to pull in the connecting shaft 7 to scrape and clean the top wall of the double-layer impurity filter 2, and the scraped impurities fall into the collecting cover 902, so as to realize the clean collection of impurities attached to the inner wall of the double-layer impurity filter 2;

[0027] The cross bar 901 is a hollow tube and is connected to the bottom of the collection cover 902, so that the impurities collected in the collection tank can be discharged from the hollow tube. A control valve is also provided in the cross bar 901. At the same time, the cross bar 901 is driven to move back and forth through an external reciprocating pushing device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filter assembly for an oil-water separation box, comprising a cylindrical cover (1) with both ends blocked, characterized in that: A window (101) is provided on the bottom side of the cylindrical cover (1), and a double-layer impurity filter (2) is rotatably provided inside the cylindrical cover (1). The outer wall of the double-layer impurity filter (2) rotates in contact with the inner wall of the cylindrical cover (1), and a hydrophobic and oleophilic filter or an oleophobic and hydrophilic filter is filled between the two filter layers of the double-layer impurity filter (2). A pressurized air pipe (4) is penetrated through one end wall of the cylindrical cover (1) near the top.

2. The filter assembly for an oil-water separation box according to claim 1, characterized in that: A connecting shaft (7) is rotatably penetrated on the other end wall of the cylindrical cover (1) away from the pressurized air pipe (4), and a baffle (8) fixedly sleeved on the inner end of the connecting shaft (7) is fixed on the inner wall of the double-layer impurity filter (2) and blocks the port of the double-layer impurity filter (2).

3. The filter assembly for an oil-water separation box according to claim 2, characterized in that: A cleaning mechanism (9) is also provided in the cylindrical cover (1), and the cleaning mechanism (9) is used to clean the top of the inner wall of the double-layer impurity filter (2).

4. The filter assembly for an oil-water separation box according to claim 3, characterized in that: The connecting shaft (7) is a hollow shaft structure, and the cleaning mechanism (9) comprises a cross bar (901) that rotatably and slidably penetrates the connecting shaft (7), a collecting hood (902) is fixed to the top side of the inner end of the cross bar (901), and an arc-shaped scraper (903) is fixed to the top of the collecting hood (902), and the arc-shaped scraper (903) is in contact with the inner wall of the double-layer impurity filter (2).

5. The filter assembly for an oil-water separation box according to claim 4, characterized in that: The cross bar (901) is a hollow tube and is connected to the bottom of the collection cover (902).

6. The filter assembly for an oil-water separation box according to claim 1, characterized in that: The cylindrical cover (1) is provided with a pressurized air pipe (4) at one end, and is also penetrated by a liquid injection pipe (5), and the liquid injection pipe (5) is used to inject oily wastewater into the filter cavity.

7. The filter assembly for an oil-water separation box according to claim 6, characterized in that: The cylindrical cover (1) is provided with a pressurized air pipe (4) and one end thereof is also penetrated by a liquid discharge pipe (6) near the bottom side. The liquid discharge pipe (6) and the window (101) are used in combination to discharge the separated oil and water.

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