Oil-containing wastewater pretreatment device

Abstract

The utility model relates to the technical field of oil-containing wastewater pretreatment devices, in particular to an oil-containing wastewater pretreatment device, which is characterized in that a flocculant is placed in oil-containing wastewater by a worker, and gas generated by starting a stirring mechanism is discharged into a treatment mechanism, so that the flocculation speed of wastewater in the treatment mechanism is accelerated; small-particle impurities in the wastewater are precipitated in the treatment mechanism, the wastewater in the treatment mechanism is discharged by starting the drainage mechanism after precipitation is completed, and sludge and slurry in the treatment mechanism are discharged through the pollution discharge mechanism, so that the practicability of the equipment is improved; comprising a processing mechanism; the cleaning mechanism is mounted on the treatment mechanism, the oil discharge mechanism is mounted on the stirring mechanism, the stirring mechanism is mounted on the treatment mechanism, the water discharge mechanism is mounted on the stirring mechanism, and the sewage discharge mechanism is mounted in the treatment mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oily wastewater pretreatment device, especially to a kind of oily wastewater pretreatment device. BACKGROUND

[0002] Oily wastewater pretreatment device is used to preliminarily process oily wastewater, and its main purpose is to remove large particle suspended solids, floating oil and part of dispersed oil in wastewater, to provide more favorable conditions for subsequent treatment process.

[0003] For example, the oily wastewater pretreatment device disclosed in the utility model patent with application number CN202322230909.3 is representative of one type of prior art, which mainly includes a pre-filtering pool, a coarse grid, a fine grid, a sand filter layer, a slag collecting box and a water pump, and realizes oily wastewater pretreatment through the cooperation of the pre-filtering pool, the coarse grid, the fine grid, the sand filter layer, the slag collecting box and the water pump.

[0004] Traditional oily wastewater pretreatment device is difficult to separate waste oil in oily wastewater, and is also difficult to separate particulate matter in wastewater, thereby affecting the treatment of wastewater. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a kind of oily wastewater pretreatment device, which is improved by placing flocculant in oily sewage by worker, generating gas by starting stirring mechanism and discharging to treatment mechanism, accelerating the flocculation speed of wastewater in treatment mechanism, precipitating small particle impurities in wastewater in treatment mechanism, discharging wastewater in treatment mechanism by starting drainage mechanism after precipitation is completed, and discharging sludge slurry in treatment mechanism by discharge mechanism, to improve the practicability of equipment.

[0006] The utility model discloses a kind of oily wastewater pretreatment devices, including treatment mechanism;Further including cleaning mechanism, oil discharge mechanism, stirring mechanism, drainage mechanism and discharge mechanism, cleaning mechanism is installed on treatment mechanism, oil discharge mechanism is installed on stirring mechanism, stirring mechanism is installed on treatment mechanism, drainage mechanism is installed on stirring mechanism, and discharge mechanism is installed in treatment mechanism interior;By discharging sewage to treatment mechanism, the filter screen of treatment mechanism filters large particle impurities in oily wastewater, by starting cleaning mechanism, the impurities in the filter screen of treatment mechanism are cleaned, by starting oil discharge mechanism, floating oil on the surface of cleaning mechanism is discharged, worker places flocculant in oily sewage, by starting stirring mechanism, gas is generated and discharged to treatment mechanism, accelerates the flocculation speed of wastewater in treatment mechanism, precipitates small particle impurities in wastewater in treatment mechanism, after precipitation is completed, by starting drainage mechanism, wastewater in treatment mechanism is discharged, by discharge mechanism, sludge slurry in treatment mechanism is discharged, to improve the practicability of equipment.

[0007] Preferably, the processing mechanism comprises a workbench, a sedimentation tank, a drain plate, a filter screen and a drain pipe, the inside of the workbench is provided with a cavity, the bottom end of the sedimentation tank is installed at the top end of the workbench, the bottom end of the drain plate is installed at the inside bottom end of the sedimentation tank, the bottom end of the filter screen is installed at the top end left part of the sedimentation tank, the input end of the drain pipe is connected with the bottom end of the sedimentation tank, and the valve is arranged on the output end of the drain pipe; the workbench supports the sedimentation tank, the oil-containing wastewater is discharged into the filter screen, the filter screen filters the large-particle impurities in the oil-containing wastewater, the oil-containing wastewater is deposited in the sedimentation tank, the deposited sludge is discharged into the drain mechanism through the drain plate and the drain pipe, and the practicability of the equipment is improved.

[0008] Preferably, the cleaning mechanism comprises a support, a sliding groove, a lead screw, a first motor, a sliding block, a connecting rod and a cleaning plate, the bottom end of the sliding groove is installed at the top end of the support, the lead screw is located inside the support, the front end of the lead screw is connected with the output end of the first motor, the sliding block is slidably installed inside the lead screw, the outside of the sliding block is slidably installed on the inner wall of the sliding groove, one end of the connecting rod is installed on the sliding block, the other end of the connecting rod is installed at the top end of the cleaning plate, and the cleaning plate is located in the filter screen; the support supports the sliding groove, the lead screw is rotated by starting the first motor, the sliding block moves on the lead screw through the sliding groove guidance, the cleaning plate moves in the filter screen through the connecting rod connection, the impurities in the filter screen are cleaned, and the practicability of the equipment is improved.

[0009] Preferably, the oil discharge mechanism comprises a first filter screen pipe, a first pipeline, a first hose, an oil suction pump and a first air cylinder, the filter screen is arranged on the input end of the first filter screen pipe, the output end of the first filter screen pipe is connected with the input end of the first pipeline, the output end of the first pipeline is connected with the input end of the first hose, the output end of the first hose is connected with the input end of the oil suction pump, the top end of the first pipeline is installed at the bottom end of the first air cylinder, and the top end of the first air cylinder is installed on the stirring mechanism; the first filter screen pipe is raised and lowered by stretching and contracting the first air cylinder, the input end of the first filter screen pipe is to the oil-containing wastewater surface, and the oil dirt on the wastewater surface is discharged through the first filter screen pipe, the first pipeline and the first hose through the oil suction pump by starting the oil suction pump, and the practicability of the equipment is improved.

[0010] Preferably, the stirring mechanism comprises a mounting frame, an air pump, a second hose, a second pipeline, a second cylinder, a rotary joint, a third pipeline, a plurality of blades and a plurality of exhaust pipes, the bottom end of the air pump is mounted at the top end of the mounting frame, the output end of the air pump is connected with the input end of the second hose, the output end of the second hose is connected with the input end of the second pipeline, the top end of the second pipeline is mounted at the top end of the second cylinder, the top end of the second cylinder is mounted on the mounting frame, the output end of the rotary joint is connected with the input end of the third pipeline, the output end of the third pipeline is provided with a plurality of blades, the third pipeline is provided with a plurality of output ends, and the input ends of the plurality of exhaust pipes are connected with the plurality of output ends of the third pipeline; the mounting frame supports the air pump, the worker places the flocculating agent in the wastewater in the sedimentation tank, the air pump is started to generate airflow, which is sequentially discharged into the third pipeline through the second hose, the second pipeline and the rotary joint, and is discharged through the plurality of exhaust pipes, the airflow blows on the plurality of blades to form centrifugal force, the third pipeline rotates, and the gas discharged through the plurality of exhaust pipes fully stirs the wastewater and the flocculating agent in the sedimentation tank, so that the impurities in the wastewater are fully flocculated, and the practicability of the equipment is improved.

[0011] Preferably, the drainage mechanism comprises a second filter screen pipe, a fourth pipeline, a third hose, a sewage pump and a third cylinder, the input end of the second filter screen pipe is provided with a filter screen, the output end of the second filter screen pipe is connected with the input end of the fourth pipeline, the output end of the fourth pipeline is connected with the input end of the third hose, the output end of the third hose is connected with the input end of the sewage pump, and the top end of the second filter screen pipe is mounted at the bottom end of the third cylinder; the third cylinder is stretched and contracted to make the second filter screen pipe rise and fall, the input end of the second filter screen pipe is placed to the oil-containing wastewater surface, the sewage pump is started to make the wastewater sequentially pass through the second filter screen pipe, the fourth pipeline and the third hose and be discharged through the sewage pump, and the practicability of the equipment is improved.

[0012] Preferably, the drainage mechanism comprises a second motor, a rotating shaft, a spiral blade and a discharge pipeline, the left end of the rotating shaft is connected with the output end of the second motor, the rotating shaft is provided with the spiral blade and located in the discharge pipeline; the sludge mud in the sedimentation tank is discharged into the discharge pipeline, the second motor is started to make the rotating shaft rotate, and the sludge mud is discharged through the spiral blade, and the practicability of the equipment is improved.

[0013] The beneficial effects of the utility model compared with prior art are: through discharging the sewage to the treatment mechanism, the filter screen of the treatment mechanism filters the large particle impurities in the oily wastewater, through starting the cleaning mechanism, the impurities in the filter screen of the treatment mechanism are cleaned, through starting the oil discharge mechanism, the floating oil on the surface of the oily wastewater in the cleaning mechanism is discharged, the staff places the flocculating agent in the oily sewage, through starting the stirring mechanism, the gas is discharged to the treatment mechanism, the flocculation speed of the wastewater in the treatment mechanism is accelerated, the small particle impurities in the wastewater are deposited in the treatment mechanism, after the deposition is completed, through starting the drainage mechanism, the wastewater in the treatment mechanism is discharged, through the sewage discharge mechanism, the sludge in the treatment mechanism is discharged, the practicability of the equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the axial section view of the utility model, and

[0015] Figure 2 It is the front view section view of the reaction mechanism of the utility model, and

[0016] Figure 3 It is the axial schematic view of the cleaning mechanism of the utility model, and

[0017] Figure 4 It is the axial schematic view of the oil discharge mechanism of the utility model, and

[0018] Figure 5 It is the front view section view of the stirring mechanism of the utility model, and

[0019] Figure 6 It is the axial schematic view of the drainage mechanism of the utility model, and

[0020] Figure 7 It is the front view section view of the sewage discharge mechanism of the utility model, and

[0021] Figure 8 It is the enlarged view of A of the utility model.

[0022] Marked in the drawing: 01, processing mechanism; 11, workbench; 12, sedimentation tank; 13, pollution discharge plate; 14, filter screen; 15, pollution discharge pipe; 02, cleaning mechanism; 21, support; 22, chute; 23, lead screw; 24, first motor; 25, sliding block; 26, connecting rod; 27, cleaning plate; 03, oil discharge mechanism; 31, first filter screen pipe; 32, first pipeline; 33, first hose; 34, oil suction pump; 35, first air cylinder; 04, stirring mechanism; 41, mounting frame; 42, air pump; 43, second hose; 44, second pipeline; 45, second air cylinder; 46, rotary joint; 47, third pipeline; 48, blade; 49, exhaust pipe; 05, drainage mechanism; 51, second filter screen pipe; 52, fourth pipeline; 53, third hose; 54, sewage pump; 55, third air cylinder; 06, pollution discharge mechanism; 61, second motor; 62, rotary shaft; 63, spiral blade; 64, discharge pipeline. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0024] Embodiment 1

[0025] As Figure 1 shown, an oily wastewater pretreatment device, the oily wastewater pretreatment device of the utility model, including processing mechanism 01, still including cleaning mechanism 02, oil discharge mechanism 03, stirring mechanism 04, drainage mechanism 05 and pollution discharge mechanism 06, cleaning mechanism 02 is installed on processing mechanism 01, oil discharge mechanism 03 is installed on stirring mechanism 04, stirring mechanism 04 is installed on processing mechanism 01, drainage mechanism 05 is installed on stirring mechanism 04, and pollution discharge mechanism 06 is installed inside processing mechanism 01;

[0026] By discharging sewage to processing mechanism 01, the filter screen of processing mechanism 01 filters large-particle impurities in oily wastewater, the impurities in the filter screen of processing mechanism 01 are cleaned by starting cleaning mechanism 02, the floating oil on the surface of oily wastewater in cleaning mechanism 02 is discharged by starting oil discharge mechanism 03, the staff places flocculating agent in oily sewage, gas is discharged to processing mechanism 01 by starting stirring mechanism 04, the flocculation speed of wastewater in processing mechanism 01 is accelerated, small-particle impurities in wastewater are precipitated in processing mechanism 01, wastewater in processing mechanism 01 is discharged by starting drainage mechanism 05 after precipitation is completed, sludge in processing mechanism 01 is discharged by pollution discharge mechanism 06, and the practicability of the equipment is improved;

[0027] AsFigure 2 As shown, the processing mechanism 01 includes a workbench 11, a sedimentation tank 12, a drain plate 13, a filter screen 14, and a drain pipe 15. The workbench 11 has an internal cavity. The bottom end of the sedimentation tank 12 is installed at the top of the workbench 11. The bottom end of the drain plate 13 is installed at the bottom of the sedimentation tank 12. The bottom end of the filter screen 14 is installed at the top left of the sedimentation tank 12. The inlet end of the drain pipe 15 is connected to the bottom end of the sedimentation tank 12, and a valve is installed at the outlet end of the drain pipe 15.

[0028] like Figure 3 As shown, the cleaning mechanism 02 includes a bracket 21, a slide 22, a lead screw 23, a first motor 24, a slider 25, a connecting rod 26, and a cleaning plate 27. The bottom end of the slide 22 is installed on the top end of the bracket 21. The lead screw 23 is located inside the bracket 21, and the front end of the lead screw 23 is connected to the output end of the first motor 24. The slider 25 is slidably installed on the lead screw 23 inside, and slidably installed on the inner wall of the slide 22 outside. One end of the connecting rod 26 is installed on the slider 25, and the other end of the connecting rod 26 is installed on the top end of the cleaning plate 27. The cleaning plate 27 is located inside the filter screen 14.

[0029] The workbench 11 supports the sedimentation tank 12 and discharges oily wastewater into the filter screen 14. The filter screen 14 filters out large particles of impurities in the oily wastewater, causing the oily wastewater to settle in the sedimentation tank 12. The settled sludge is discharged into the sewage discharge mechanism 06 via the sewage discharge plate 13 and the sewage discharge pipe 15. The bracket 21 supports the slide chute 22. By starting the first motor 24, the lead screw 23 is rotated. The slide chute 22 guides the slider 25 to move on the lead screw 23. The connecting rod 26 connects the cleaning plate 27 to move within the filter screen 14 to clean the impurities within the filter screen 14, improving the practicality of the equipment.

[0030] Example 2

[0031] like Figure 4 to Figure 7As shown, on the basis of embodiment 1 further includes oil discharge mechanism 03, stirring mechanism 04, drainage mechanism 05 and sewage mechanism 06, oil discharge mechanism 03 includes first filter screen pipe 31, first pipeline 32, first hose 33, oil pump 34 and first cylinder 35, the input end of first filter screen pipe 31 is provided with filter screen, the output end of first filter screen pipe 31 is connected with the input end of first pipeline 32, the output end of first pipeline 32 is connected with the input end of first hose 33, the output end of first hose 33 is connected with the input end of oil pump 34, the top end of first pipeline 32 is installed at the bottom end of first cylinder 35, and the top end of first cylinder 35 is installed on stirring mechanism 04;Stirring mechanism 04 includes mounting frame 41, air pump 42, second hose 43, second pipeline 44, second cylinder 45, rotary joint 46, third pipeline 47, a plurality of blades 48 and a plurality of exhaust pipes 49, the bottom end of air pump 42 is installed at the top end of mounting frame 41, the output end of air pump 42 is connected with the input end of second hose 43, the output end of second hose 43 is connected with the input end of second pipeline 44, the top end of second pipeline 44 is installed at the top end of second cylinder 45, the top end of second cylinder 45 is installed on mounting frame 41, the output end of second pipeline 44 is connected with the input end of rotary joint 46, the output end of rotary joint 46 is connected with the input end of third pipeline 47, a plurality of blades 48 are arranged on the inner wall of third pipeline 47, third pipeline 47 is provided with a plurality of output ends, and the input ends of a plurality of exhaust pipes 49 are connected with the plurality of output ends of third pipeline 47 respectively;Drainage mechanism 05 includes second filter screen pipe 51, fourth pipeline 52, third hose 53, sewage pump 54 and third cylinder 55, the input end of second filter screen pipe 51 is provided with filter screen, the output end of second filter screen pipe 51 is connected with the input end of fourth pipeline 52, the output end of fourth pipeline 52 is connected with the input end of third hose 53, the output end of third hose 53 is connected with the input end of sewage pump 54, the top end of fourth pipeline 52 is installed at the bottom end of third cylinder 55, and the top end of third cylinder 55 is installed on mounting frame 41;Sewage mechanism 06 includes second motor 61, rotating shaft 62, spiral blade 63 and discharge pipeline 64, the left end of rotating shaft 62 is connected with the output end of second motor 61, spiral blade 63 is arranged on rotating shaft 62, and rotating shaft 62 is located in discharge pipeline 64;

[0032] The first filter screen pipe 31 is lifted and lowered by stretching and contracting the first cylinder 35, the input end of the first filter screen pipe 31 is to the oil-containing wastewater surface, the oil dirt on the wastewater surface is discharged through the oil suction pump 34 in sequence through the first filter screen pipe 31, the first pipeline 32 to the first hose 33, the mounting frame 41 supports the air pump 42, the flocculating agent is placed in the wastewater in the sedimentation tank 12 by the staff, the air flow is generated by starting the air pump 42, and is discharged through the multiple exhaust pipes 49 in sequence through the second hose 43, the second pipeline 44, the rotary joint 46 and the third pipeline 47, respectively, the air flow blows on the multiple blades 48 to form centrifugal force, the third pipeline 47 rotates, the gas discharged through the multiple exhaust pipes 49 fully stirs the wastewater and the flocculating agent in the sedimentation tank 12, the impurities in the wastewater are fully flocculated, the second filter screen pipe 51 is lifted and lowered by stretching and contracting the third cylinder 55, the input end of the second filter screen pipe 51 is to the oil-containing wastewater surface, the wastewater is discharged through the sewage pump 54 in sequence through the second filter screen pipe 51, the fourth pipeline 52 to the third hose 53 through the sewage pump 54, the sludge mud in the sedimentation tank 12 is discharged into the discharge pipeline 64, the rotating shaft 62 is rotated by starting the second motor 61, the sludge mud is discharged through the spiral blade 63, and the practicability of the equipment is improved.

[0033] Compared with the prior art, the beneficial effects of the utility model are that: the wastewater is discharged into the treatment mechanism 01, the filter screen of the treatment mechanism 01 filters the large particle impurities in the oil-containing wastewater, the impurities in the filter screen of the treatment mechanism 01 are cleaned by starting the cleaning mechanism 02, the floating oil on the surface of the oil-containing wastewater in the cleaning mechanism 02 is discharged by starting the oil discharge mechanism 03, the staff places the flocculating agent in the oil-containing wastewater, the gas is discharged into the treatment mechanism 01 by starting the stirring mechanism 04, the flocculation speed of the wastewater in the treatment mechanism 01 is accelerated, the small particle impurities in the wastewater are deposited in the treatment mechanism 01, the wastewater in the treatment mechanism 01 is discharged by starting the drainage mechanism 05 after the deposition is completed, the sludge mud in the treatment mechanism 01 is discharged through the sewage discharge mechanism 06, and the practicability of the equipment is improved.

[0034] As Figure 1 to Figure 8As shown, the oil-containing wastewater pretreatment device of the utility model, in working, first worktable 11 supports sedimentation tank 12, and oil-containing wastewater is discharged into filter screen 14, and filter screen 14 filters the large particle impurities in oil-containing wastewater, and oil-containing wastewater is deposited in sedimentation tank 12, and the deposited sludge is discharged into sewage discharge mechanism 06 through sewage discharge plate 13 and sewage discharge pipe 15, then support 21 supports chute 22, and the first motor 24 is started to rotate lead screw 23, and the sliding block 25 moves on the lead screw 23 through the guidance of the chute 22, and the cleaning plate 27 moves in the filter screen 14 through the connection of the connecting rod 26, and the impurities in the filter screen 14 are cleaned, then the first filter screen pipe 31 is raised and lowered by stretching and contracting the first air cylinder 35, and the input end of the first filter screen pipe 31 is to the oil-containing wastewater surface, and the oil on the wastewater surface is discharged through the oil pump 34 in sequence through the first filter screen pipe 31, the first pipeline 32 and the first hose 33, then the mounting frame 41 supports the air pump 42, the staff places the flocculating agent in the wastewater in the sedimentation tank 12, the air pump 42 is started to generate airflow, and the airflow is discharged into the third pipeline 47 in sequence through the second hose 43, the second pipeline 44 and the rotary joint 46, and is discharged through the multiple exhaust pipes 49 respectively, the airflow blows on the multiple blades 48 to form centrifugal force, the third pipeline 47 rotates, and the gas discharged through the multiple exhaust pipes 49 fully stirs the wastewater and the flocculating agent in the sedimentation tank 12, and the impurities in the wastewater are fully flocculated, then the second filter screen pipe 51 is raised and lowered by stretching and contracting the third air cylinder 55, and the input end of the second filter screen pipe 51 is to the oil-containing wastewater surface, and the wastewater is discharged through the sewage pump 54 in sequence through the second filter screen pipe 51, the fourth pipeline 52 and the third hose 53, and finally the sludge mud in the sedimentation tank 12 after precipitation is discharged into the discharge pipeline 64, the rotating shaft 62 is rotated by starting the second motor 61, and the sludge mud is discharged through the spiral blade 63, and the practicability of the equipment is improved.

[0035] The first motor 24, the oil pump 34, the air pump 42, the sewage pump 54 and the second motor 61 of the utility model are purchased on the market, and the technical personnel in the industry only need to install and operate according to the attached instruction manual, without the creative labor of the technical personnel in the field.

[0036] The main function realized by the utility model is that the staff places the flocculating agent in the oil-containing sewage, the stirring mechanism 04 is started to generate gas and discharge into the treatment mechanism 01, the flocculation speed of the wastewater in the treatment mechanism 01 is accelerated, the small particle impurities in the wastewater are deposited in the treatment mechanism 01, the wastewater in the treatment mechanism 01 is discharged by starting the drainage mechanism 05 after deposition is completed, the sludge mud in the treatment mechanism 01 is discharged through the sewage discharge mechanism 06, and the practicability of the equipment is improved.

[0037] The above merely is the preferred implementation manner of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. An oil-containing wastewater pretreatment device comprising a treatment mechanism (01); characterized in that, The cleaning mechanism (02), the oil discharge mechanism (03), the stirring mechanism (04), the water discharge mechanism (05) and the sewage discharge mechanism (06) are further included, the cleaning mechanism (02) is installed on the treatment mechanism (01), the oil discharge mechanism (03) is installed on the stirring mechanism (04), the stirring mechanism (04) is installed on the treatment mechanism (01), the water discharge mechanism (05) is installed on the stirring mechanism (04), and the sewage discharge mechanism (06) is installed on the workbench (11) in the treatment mechanism (01).

2. An oil-containing wastewater pre-treatment device according to claim 1, characterized in that The treatment mechanism (01) comprises a workbench (11), a sedimentation tank (12), a sewage plate (13), a filter screen (14) and a sewage pipe (15), the inside of the workbench (11) is provided with a cavity, the bottom end of the sedimentation tank (12) is installed at the top end of the workbench (11), the bottom end of the sewage plate (13) is installed at the inside bottom end of the sedimentation tank (12), the bottom end of the filter screen (14) is installed at the left part of the top end of the sedimentation tank (12), the input end of the sewage pipe (15) is connected with the bottom end of the sedimentation tank (12), and the valve is arranged on the output end of the sewage pipe (15).

3. An oil-containing wastewater pre-treatment device according to claim 2, characterized in that The cleaning mechanism (02) comprises a support (21), a sliding groove (22), a lead screw (23), a first motor (24), a sliding block (25), a connecting rod (26) and a cleaning plate (27), the bottom end of the sliding groove (22) is installed at the top end of the support (21), the lead screw (23) is located in the support (21), the front end of the lead screw (23) is connected with the output end of the first motor (24), the sliding block (25) is slidably installed in the lead screw (23), the outer portion of the sliding block (25) is slidably installed on the inner wall of the sliding groove (22), one end of the connecting rod (26) is installed on the sliding block (25), the other end of the connecting rod (26) is installed on the top end of the cleaning plate (27), and the cleaning plate (27) is located in the filter screen (14).

4. An oil-containing wastewater pre-treatment device according to claim 1, characterized in that The oil discharge mechanism (03) comprises a first filter screen pipe (31), a first pipeline (32), a first hose (33), an oil suction pump (34) and a first air cylinder (35), the input end of the first filter screen pipe (31) is provided with a filter screen, the output end of the first filter screen pipe (31) is connected with the input end of the first pipeline (32), the output end of the first pipeline (32) is connected with the input end of the first hose (33), the output end of the first hose (33) is connected with the input end of the oil suction pump (34), the top end of the first pipeline (32) is installed at the bottom end of the first air cylinder (35), and the top end of the first air cylinder (35) is installed on the stirring mechanism (04).

5. An oil-containing wastewater pre-treatment device according to claim 1, characterized in that The stirring mechanism (04) comprises a mounting frame (41), an air pump (42), a second hose (43), a second pipeline (44), a second air cylinder (45), a rotary joint (46), a third pipeline (47), a plurality of blades (48) and a plurality of exhaust pipes (49), the bottom end of the air pump (42) is mounted on the top end of the mounting frame (41), the output end of the air pump (42) is connected with the input end of the second hose (43), the output end of the second hose (43) is connected with the input end of the second pipeline (44), the top end of the second pipeline (44) is mounted on the top end of the second air cylinder (45), the top end of the second air cylinder (45) is mounted on the mounting frame (41), the output end of the second pipeline (44) is connected with the input end of the rotary joint (46), the output end of the rotary joint (46) is connected with the input end of the third pipeline (47), a plurality of blades (48) are arranged on the inner wall of the third pipeline (47), the third pipeline (47) is provided with a plurality of output ends, and the input ends of the plurality of exhaust pipes (49) are connected with the plurality of output ends of the third pipeline (47) respectively.

6. An oil-containing wastewater pre-treatment device according to claim 5, characterized in that The drainage mechanism (05) comprises a second filter screen pipe (51), a fourth pipeline (52), a third hose (53), a sewage pump (54) and a third air cylinder (55), a filter screen is arranged on the input end of the second filter screen pipe (51), the output end of the second filter screen pipe (51) is connected with the input end of the fourth pipeline (52), the output end of the fourth pipeline (52) is connected with the input end of the third hose (53), the output end of the third hose (53) is connected with the input end of the sewage pump (54), the top end of the fourth pipeline (52) is mounted on the bottom end of the third air cylinder (55), and the top end of the third air cylinder (55) is mounted on the mounting frame (41).

7. An oil-containing wastewater pre-treatment device as claimed in claim 1, characterized in that The sewage discharge mechanism (06) comprises a second motor (61), a rotating shaft (62), a spiral blade (63) and a discharge pipeline (64), the left end of the rotating shaft (62) is connected with the output end of the second motor (61), the spiral blade (63) is arranged on the rotating shaft (62), and the rotating shaft (62) is located in the discharge pipeline (64).

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