Oil removal filter for sewage treatment

Abstract

The utility model discloses an oil removal filter for sewage treatment, which comprises a device body, a water inlet is arranged on the right side of the top of the device body 1, a filter frame is arranged at the water inlet, a first oil removal cavity is arranged in the device body, the upper side of the first oil removal cavity is communicated with the water inlet, and a first water outlet is arranged at the bottom of the first oil removal cavity. A sealing block is inserted into the first water outlet; a sewer pipe is fixedly arranged on the lower side of the sealing block; a plurality of water filtering holes are formed in the side wall of the sewer pipe; a pull rod is vertically arranged on the upper side of the sealing block and upwards penetrates through the device body; an effluent filtering structure is arranged below the right side of the second oil removal cavity; according to the equipment, sewage is separated from a sewer pipe when entering the equipment, and the sewer pipe is pulled after oil stains are removed to a certain extent through the oil removal pipe, so that the adhesion of the oil stains at the sewer pipe is reduced, and the oil removal effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an oil removal filter for sewage treatment. Background Art

[0002] In the refining, petrochemical, chemical fiber, pharmaceutical and food industries, various types of oily sewage are often entrained in the production wastewater, which not only brings great pressure to the production wastewater treatment facilities, but also causes waste of oil products. Conventional treatment methods mostly adopt methods such as increasing the residence time of the water tank, sedimentation separation, centrifugal separation, or oil-water separation through oil separation in the sewage treatment plant.

[0003] The utility model patent CN213446519U discloses an oil removal filter for sewage treatment, including a device body. Inside the device body, there are an inlet chamber, a first classification chamber, a second classification chamber, a third classification chamber, a fourth classification chamber, a fifth classification chamber, an observation chamber and a treatment chamber. After the sewage is filtered by the filter frame to remove particles, it enters the first classification chamber, the second classification chamber, the third classification chamber, the fourth classification chamber and the fifth classification chamber through the inlet chamber. According to the principle of oil floating, the oil will be discharged into the fifth classification chamber through the floating pipe and discharged through the oil outlet pipe. The separated water will pass downward through the first solenoid valve into the observation chamber. When the liquid in the observation chamber is full, the remaining oil will gather at the upper end inside the observation chamber. At this time, the second solenoid valve is opened, and the middle layer separated liquid in the observation chamber will be discharged into the treatment chamber through the second solenoid valve and discharged after being filtered by the oil-absorbing cotton again;

[0004] This equipment removes the oil in the sewage through multiple measures. However, due to the multiple measures set by this equipment, the oily sewage will repeatedly pass through multiple classification chambers, and the oil removal process is too cumbersome. Moreover, because the sewage contains oil, the oil will adhere to the chamber walls when the sewage passes through, so the oil removal effect is not very ideal. Utility Model Content

[0005] Aiming at the above technical problems in the prior art, the utility model provides an oil removal filter for sewage treatment, aiming to solve the above problems.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] An oil removal filter for sewage treatment, comprising a device body. An inlet is provided on the right side of the top of the device body. A filter frame is provided at the inlet. A first oil removal chamber is formed inside the device body. The upper side of the first oil removal chamber is communicated with the inlet. A first water outlet is formed at the bottom of the first oil removal chamber. A second oil removal chamber is formed inside the device body below the first oil removal chamber. The upper side of the second oil removal chamber is communicated with the first water outlet. A sealing block is inserted at the first water outlet. A water pipe is fixedly provided below the sealing block. A plurality of water filtering holes are formed in the side wall of the water pipe. A pull rod is vertically provided above the sealing block. The pull rod passes upward through the device body and extends to the outside. The pull rod is slidably connected with the device body. An outlet filtering structure is provided below the right side of the second oil removal chamber.

[0008] Preferably, the outlet filtering structure includes an outlet chamber, which is provided below the right side of the second oil removal chamber. The second oil removal chamber and the outlet chamber are communicated. A second water outlet is formed on the lower side surface of the outlet chamber. An oil absorption cotton is provided at the second water outlet.

[0009] Preferably, a water baffle is inserted between the second oil removal chamber and the outlet chamber. A sliding groove is formed on the right side of the device body corresponding to the water baffle. A lifting plate is provided on the upper right side of the water baffle. The lifting plate extends out of the sliding groove to the outside of the device body.

[0010] Preferably, an inclined plate is provided at the bottom of the second oil removal chamber corresponding to the outlet chamber, which is inclined downward and to the right from top to bottom.

[0011] Preferably, oil removal pipes are respectively vertically provided on the left inner side walls of the first oil removal chamber and the second oil removal chamber. The upper ends of the two oil removal pipes are located inside the first oil removal chamber or the second oil removal chamber, and the lower ends respectively pass through the device body to the right and extend to the outside.

[0012] Preferably, water inlets are provided at the tops of the two oil removal pipes located inside the first oil removal chamber or the second oil removal chamber, which are inclined downward and to the left from top to bottom.

[0013] Preferably, a conical water collecting chamber is provided at the first oil removal chamber corresponding to the first water outlet. The sealing block is adapted to the conical water collecting chamber.

[0014] Preferably, an annular limiting block is provided at the bottom of the water pipe corresponding to the top of the second oil removal chamber.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] An oil removal filter for sewage treatment provided by the utility model first fills the sewage with oil from the water inlet. When the sewage reaches the oil removal pipe at the first oil removal chamber and the oil is discharged, then pull the pull rod upward to lift the sealing block and drive the lower water pipe to move upward until a plurality of water filtering holes communicate with the first oil removal chamber. Then, the preliminarily oil-removed sewage is introduced into the second oil removal chamber through the water filtering holes. When the sewage reaches the oil removal pipe at the second oil removal chamber and the oil is discharged, lift the water baffle upward to introduce the further filtered sewage to the second water outlet, and then finally adsorb it with the oil-absorbing cotton to fully remove the residual oil; when the sewage enters, the device is separated from the lower water pipe. After a certain amount of oil is removed through the oil removal pipe, then pull the lower water pipe, thereby reducing the adhesion of oil at the lower water pipe and improving the oil removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of an oil removal filter for sewage treatment according to the present utility model (the first state;

[0018] Figure 2 is a schematic diagram of the overall structure of an oil removal filter for sewage treatment according to the present utility model (the second state);

[0019] Figure 3 is an enlarged view of part A of an oil removal filter for sewage treatment according to the present utility model.

[0020] In the figure: 1. Device body; 11. Water inlet; 12. Filter frame; 13. Sliding groove; 2. First oil removal chamber; 21. First water outlet; 22. Conical water collecting chamber; 3. Second oil removal chamber; 31. Inclined plate; 4. Sealing block; 41. Pull rod; 5. Lower water pipe; 51. Water filtering holes; 52. Annular limiting block; 6. Water outlet filtering structure; 61. Water outlet chamber; 62. Second water outlet; 63. Oil-absorbing cotton; 64. Water baffle; 65. Lifting plate; 7. Oil removal pipe; 71. Water inlet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 - 3, in the embodiments proposed by this application: An oil removal filter for sewage treatment includes a device body 1. On the right side of the top of the device body 1, a water inlet 11 is provided. At the water inlet 11, a filter frame 12 is provided. Inside the device body 1, a first oil removal chamber 2 is provided. The upper side of the first oil removal chamber 2 is communicated with the water inlet 11. At the bottom of the first oil removal chamber 2, a first water outlet 21 is provided. Below the first oil removal chamber 2 inside the device body 1, a second oil removal chamber 3 is provided. The upper side of the second oil removal chamber 3 is communicated with the first water outlet 21. At the first water outlet 21, a sealing block 4 is inserted. Below the sealing block 4, a water pipe 5 is fixedly provided. On the side wall of the water pipe 5, a plurality of water filtering holes 51 are provided. Vertically above the sealing block 4, a pull rod 41 is provided. The pull rod 41 passes upward through the device body 1 and extends to the outside. The pull rod 41 is slidably connected to the device body 1. On the lower right side of the second oil removal chamber 3, a water outlet filtering structure 6 is provided;

[0023] At the same time, on the left side walls of the first oil removal chamber 2 and the second oil removal chamber 3, oil removal pipes 7 are respectively vertically provided. The upper ends of the two oil removal pipes 7 are located inside the first oil removal chamber 2 or the second oil removal chamber 3. The lower ends respectively pass through the device body 1 to the right and extend to the outside. At the top of one end of the two oil removal pipes 7 located inside the first oil removal chamber 2 or the second oil removal chamber 3, water inlets 71 that are inclined leftward from top to bottom are provided.

[0024] When the sewage enters, the device is separated from the water pipe 5. Due to the characteristics of the oil stain, it will float on the water surface. When the poured sewage passes through the oil removal pipe 7 in the first oil removal chamber 2, the oil stain is discharged out through the oil removal pipe 7. After a certain amount of removal, at this time, the water pipe 5 is pulled up for filtration, thereby reducing the adhesion between the water pipe 5 and the oil stain in the sewage during the filtration process, and thus improving the oil removal effect.

[0025] In another embodiment, please refer to Figures 1 - 3 , the water outlet filtering structure 6 includes a water outlet chamber 61, which is provided on the lower right side of the second oil removal chamber 3. A communication is provided between the second oil removal chamber 3 and the water outlet chamber 61. On the lower side surface of the water outlet chamber 61, a second water outlet 62 is provided. At the second water outlet 62, an oil absorption cotton 63 is provided. Between the second oil removal chamber 3 and the water outlet chamber 61, a water blocking plate 64 is inserted. Corresponding to the water blocking plate 64 on the right side of the device body 1, a sliding groove 13 is provided. At the upper right end of the water blocking plate 64, a lifting plate 65 is provided. The lifting plate 65 extends from the sliding groove 13 to the outside of the device body 1. It is characterized in that, corresponding to the water outlet chamber 61 at the bottom of the second oil removal chamber 3, an inclined plate 31 that is inclined rightward from top to bottom is provided to assist in draining water;

[0026] When the preliminarily filtered sewage enters the second oil removal chamber 3, due to the characteristics of the oil stain, it will float on the water surface. When the sewage reaches the oil removal pipe 7 in the second oil removal chamber 3, the oil stain will drain out along the oil removal pipe 7. At this time, the water baffle 64 is opened for drainage work, and the amount of drainage can be controlled by the water baffle 64 to make it as consistent as possible with the water flow in the drain pipe 5. At this time, the oil stain in the sewage will continue to drain out from the oil removal pipe 7, and the remaining oil stain at the second water outlet 62 will be adsorbed by the oil-absorbing cotton 63 to fully remove the remaining oil stain and improve the oil removal effect.

[0027] In another embodiment, please refer to Figures 1 - 3 , a conical water collecting chamber 22 is provided corresponding to the first water outlet 21 in the first oil removal chamber 2. The sealing block 4 is adapted to the conical water collecting chamber 22 to assist the sewage to be discharged into the second oil removal chamber 3. An annular limiting block 52 is provided at the bottom of the drain pipe 5 corresponding to the top of the second oil removal chamber 3 to prevent the drain pipe 5 from being pulled out of the first water outlet 21.

[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0029] In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0030] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil removal filter for sewage treatment, comprising a device body (1), a water inlet (11) is provided on the top right side of the device body (1), a filter frame (12) is provided at the water inlet (11), and the characteristics are: A first oil removal chamber (2) is provided inside the device body (1), the upper side of the first oil removal chamber (2) is connected to the water inlet (11), and a first water outlet (21) is provided at the bottom of the first oil removal chamber (2). A second oil removal chamber (3) is provided inside the device body (1) at the lower side of the first oil removal chamber (2), the upper side of the second oil removal chamber (3) is connected to the first water outlet (21), a sealing block (4) is inserted at the first water outlet (21), a downpipe (5) is fixedly provided at the lower side of the sealing block (4), a plurality of water filtering holes (51) are provided on the side wall of the downpipe (5), a pull rod (41) is vertically provided on the upper side of the sealing block (4), the pull rod (41) passes through the device body (1) upward and extends to the outside, the pull rod (41) is slidably connected to the device body (1), and a water outlet filtering structure (6) is provided at the lower right side of the second oil removal chamber (3).

2. The oil removal filter for sewage treatment according to claim 1, characterized in that: The water outlet filtering structure (6) comprises a water outlet chamber (61), which is arranged below the right side of the second oil removal chamber (3); the second oil removal chamber (3) and the water outlet chamber (61) are connected; a second water outlet (62) is provided on the lower side of the water outlet chamber (61); and oil-absorbing cotton (63) is provided at the second water outlet (62).

3. The oil removal filter for sewage treatment according to claim 2, characterized in that: A water baffle (64) is inserted between the second oil removal chamber (3) and the water outlet chamber (61); a sliding groove (13) is provided on the right side of the device body (1) corresponding to the water baffle (64); a lifting plate (65) is provided on the right side of the upper end of the water baffle (64); and the lifting plate (65) extends from the sliding groove (13) to the outside of the device body (1).

4. The oil removal filter for sewage treatment according to claim 2, characterized in that: A sloping plate (31) is provided at the bottom of the second oil removal chamber (3) corresponding to the water outlet chamber (61), sloping from top to bottom and toward the right.

5. The oil removal filter for sewage treatment according to claim 1, characterized in that: Oil removal pipes (7) are vertically arranged on the left side walls of the first oil removal chamber (2) and the second oil removal chamber (3), respectively. The upper ends of the two oil removal pipes (7) are located in the first oil removal chamber (2) or the second oil removal chamber (3), and the lower ends respectively pass through the device body (1) to the right and extend to the outside.

6. The oil removal filter for sewage treatment according to claim 5, characterized in that: The top of one end of the two oil removal pipes (7) located in the first oil removal chamber (2) or the second oil removal chamber (3) is provided with a water inlet (71) inclined leftward from top to bottom.

7. The oil removal filter for sewage treatment according to claim 1, characterized in that: The first oil removal chamber (2) is provided with a conical water collection chamber (22) at a position corresponding to the first water outlet (21), and the sealing block (4) is adapted to the conical water collection chamber (22).

8. The oil removal filter for sewage treatment according to claim 1, characterized in that: An annular limiting block (52) is provided at the bottom of the downpipe (5) corresponding to the top of the second oil removal chamber (3).

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