A petroleum wastewater treatment device and treatment method

Abstract

The present invention relates to the technical field of petroleum wastewater treatment, and discloses a petroleum wastewater treatment device and a treatment method, comprising a box and a hopper, a bracket is installed on the top of the box, a stirring mechanism is arranged on the bracket, the stirring mechanism comprises a motor, a main shaft, a transverse shaft, a traction block and a spline shaft, and the motor is fixedly installed on the top of the bracket. The present invention enables the main shaft to drive the transverse shaft to reciprocate on the surface of the main shaft when it rotates in one direction through the cooperation of the driving structure, so that the transverse shaft drives the traction block to reciprocate horizontally on the surface of the transverse shaft through the traction structure, at this time, the traction block can cooperate with the reciprocating structure to realize the reciprocating spraying of the hopper, and at the same time, the spline shaft can follow the traction block to move synchronously during the continuous spraying process, and the spline shaft drives the stirring blade to perform synchronous horizontal reciprocating motion through the stirring shaft, and at the same time, the stirring blade can reciprocate around the stirring shaft under the drive of the reciprocating structure to stir the sewage so that it is evenly mixed with the agent.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum wastewater treatment, and in particular to a petroleum wastewater treatment device and a treatment method. Background Art

[0002] Petroleum wastewater contains a lot of floating oil, which will be adsorbed on the surface of activated sludge particles or biofilms. When treating petroleum wastewater, flocculants can be used to condense the suspended matter in the wastewater into large-particle flocs, accelerating the precipitation of suspended matter in the wastewater.

[0003] The prior art provides a device and method for treating petroleum wastewater (publication number CN112624385B), which belongs to the field of wastewater treatment. A device for treating petroleum wastewater includes a first box body, and a water outlet is provided on one side of the first box body. The invention sets a feeding mechanism, and discharges the wastewater into the first box body through the water inlet by placing a reagent inside the hopper. When the water inside the first box body reaches a certain height, the foam block drives the sleeve rod to move inside the first slide groove through the first slider, so as to facilitate the baffle at the top of the sleeve rod to be pushed open from the bottom end of the hopper, so as to facilitate the discharge of the reagent inside the hopper into the first box body through the sleeve, so as to facilitate the treatment of the wastewater inside the first box body. However, the above scheme still has the following defects:

[0004] 1. The first box lacks a stirring function. Since the reagent is discharged from the bottom of the hopper into the first box through the sleeve, it is difficult for the reagent to evenly mix the sewage below the inner cavity of the first box, resulting in uneven concentration distribution of the reagent inside the first box.

[0005] 2. The reagent moves to the inside of the first box through the sleeve by its own weight. Due to the different types of reagents, some of the more viscous reagents will adhere to the inner wall of the hopper, making it difficult to achieve an accurate input amount of the reagents. Summary of the invention

[0006] The purpose of the present invention is to provide a technical solution to solve the problems in the prior art mentioned in the above background technology.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A petroleum wastewater treatment device comprises a box and a hopper, a bracket is installed on the top of the box, a stirring mechanism is arranged on the bracket, and the stirring mechanism comprises:

[0009] A motor, wherein the motor is fixedly mounted on the top of the bracket;

[0010] A main shaft, the main shaft is rotatably connected to the bottom of the bracket and connected to the output end of the motor;

[0011] A transverse axis, two of which are symmetrical and horizontally rotationally connected to the surface of the main axis;

[0012] A traction block, wherein the traction block is horizontally slidably connected to the surface of the transverse shaft through a traction structure, and one end of the transverse shaft is connected to the inner wall of the box through a driving structure; and

[0013] A spline shaft, the bottom of the traction block is rotatably connected with a spline shaft, the surface of the spline shaft is sleeved with a stirring shaft, the surface of the stirring shaft is vertically fixedly connected with a stirring blade, the spline shaft cooperates with the horizontal shaft through a reciprocating structure to drive the stirring blade to reciprocate around the stirring shaft, and the hopper is vertically slidably installed above the traction block and cooperates with the reciprocating structure;

[0014] The motor drives the transverse axis to revolve through the main axis, and the transverse axis reciprocates and rotates on the surface of the main axis through the driving structure, so that the transverse axis drives the traction block to move horizontally on the surface of the transverse axis through the traction structure, and then the traction block drives the stirring blade to reciprocate and revolve through the reciprocating structure while performing vertical reciprocating motion, and at the same time, the hopper performs vertical reciprocating motion under the action of the reciprocating structure to achieve uniform mixing of the medicine and sewage.

[0015] Preferably, the reciprocating structure comprises:

[0016] A drive shaft, the drive shaft being rotatably connected to one end of the transverse shaft;

[0017] A support frame, the support frame is fixedly mounted on the surface of the horizontal shaft, and the support frame is sleeved on the surface of the driving shaft;

[0018] A rack fixedly mounted on an inner wall of the support frame; and

[0019] A first gear, the first gear key is connected to the surface of the spline shaft and matches with the rack;

[0020] The driving structure drives the driving shaft to reciprocate at one end of the transverse shaft, and the transverse shaft drives the traction block to reciprocate horizontally through the traction structure, so that the traction block drives the first gear to cooperate with the rack when moving, thereby realizing the rotation of the spline shaft.

[0021] Preferably, the reciprocating structure further comprises:

[0022] Vertical plates, two of which are fixedly mounted in parallel on the inner wall of the support frame;

[0023] A slide groove, wherein the slide groove is arranged on the surface of the vertical plate, and the projection of the slide groove on the vertical plane is wavy; and

[0024] A guide rod, the guide rod being fixedly connected to the surface of the hopper and slidably connected to the interior of the chute;

[0025] When the traction block drives the hopper to reciprocate, it drives the guide rod to move synchronously, so that the guide rod slides inside the slide groove, and then drives the hopper to reciprocate in the vertical direction to shake out the residual medicine in the hopper.

[0026] Preferably, the surface of the stirring shaft is rotatably connected to a limiting collar, a connecting rod is fixedly mounted on the surface of the limiting collar, and the top end of the connecting rod is fixedly connected to one end of the guide rod.

[0027] Preferably, the driving structure comprises:

[0028] Bases, two bases are horizontally fixedly mounted on the inner wall of the box;

[0029] An upper gear set, wherein a plurality of upper gear sets are fixedly mounted on the bottom of one of the bases;

[0030] A lower gear set, wherein a plurality of the lower gear sets are fixedly mounted on the top of another base, and the upper gear sets and the lower gear sets are staggered in the vertical direction; and

[0031] A second gear, wherein the second gear is keyed to the surface of the driving shaft and the second gear is cooperatively connected with the upper gear set and the lower gear set;

[0032] The second gear can follow the driving shaft to revolve between the two bases, so that the upper gear tooth group and the lower gear tooth group respectively drive the second gear to rotate, thereby realizing the reciprocating rotation of the driving shaft.

[0033] Preferably, the traction structure comprises:

[0034] A guide groove, wherein the guide groove is provided on the surface of the drive shaft in a spiral structure; and

[0035] A guide block, which is fixedly mounted on the inner wall of the traction block and slidably connected to the inside of the guide groove;

[0036] The driving shaft drives the guide groove to rotate, so that the guide groove drives the traction block to move horizontally on the surface of the driving shaft through cooperation with the guide block.

[0037] Preferably, a discharge port is obliquely arranged on the surface of the hopper, and the cross-section of the bottom of the hopper is arranged to be an isosceles triangle structure.

[0038] The present invention also provides a method for treating petroleum wastewater, comprising the following steps:

[0039] S1. The motor drives the main shaft to rotate and can drive the transverse shaft to reciprocate and rotate on the surface of the main shaft through the cooperation of the driving mechanism, so that the transverse shaft drives the traction block to reciprocate horizontally on the surface of the transverse shaft through the traction structure. At this time, the traction block can cooperate with the reciprocating structure to realize the reciprocating spraying of the hopper;

[0040] S2. The traction block can drive the spline shaft to move synchronously during the reciprocating horizontal motion. The spline shaft can then drive the stirring blades to perform synchronous horizontal reciprocating motion through the stirring shaft. At the same time, the stirring blades can reciprocate around the stirring shaft under the drive of the reciprocating structure to stir the sewage so that it is evenly mixed with the reagent.

[0041] S3. The reciprocating structure can also make the hopper reciprocate vertically while performing horizontal reciprocating motion, so that the medicine inside the hopper can fall off from the inner wall of the hopper due to vibration and be discharged into the box body. At the same time, the stirring blades can also reciprocate vertically with the hopper, so that the medicine can be further evenly mixed with the sewage.

[0042] Technical effects and advantages of the present invention: Compared with the prior art, the petroleum wastewater treatment device and treatment method proposed by the present invention have the following advantages:

[0043] 1. The present invention can drive the transverse shaft to reciprocate on the surface of the main shaft when the main shaft rotates unidirectionally through the cooperation of the driving structure, so that the transverse shaft drives the traction block to reciprocate horizontally on the surface of the transverse shaft through the traction structure. At this time, the traction block can cooperate with the reciprocating structure to realize the reciprocating spraying of the hopper. At the same time, during the continuous spraying process, the spline shaft can move synchronously with the traction block. The spline shaft drives the stirring blades to perform synchronous horizontal reciprocating motion through the stirring shaft. At the same time, driven by the reciprocating structure, the stirring blades can reciprocate around the stirring shaft to stir the sewage so that it is evenly mixed with the medicine;

[0044] 2. The present invention realizes the reciprocating spraying of the hopper by setting a reciprocating structure. At the same time, the reciprocating structure can also make the hopper reciprocate in the vertical direction while performing horizontal reciprocating motion, so that the medicine inside the hopper can fall off from the inner wall of the hopper due to vibration and be discharged into the box body, so that the medicine can reach a precise input amount, and at the same time, the stirring blade can also reciprocate in the vertical direction with the hopper, so that the medicine can be further evenly mixed with the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0046] Figure 2 It is a schematic diagram of the internal structure of the box of the present invention;

[0047] Figure 3 It is a schematic diagram of the cooperation between the upper gear set and the lower gear set of the present invention;

[0048] Figure 4 This is a schematic diagram of the connection structure between the main shaft and the stirring blades of the present invention;

[0049] Figure 5 It is a schematic diagram of the connection structure between the traction block and the drive shaft of the present invention;

[0050] Figure 6 It is a schematic cross-sectional structural diagram of the traction block of the present invention;

[0051] Figure 7 It is a schematic diagram of the connection structure between the guide rod and the slide groove of the present invention;

[0052] Figure 8 It is a schematic cross-sectional structural diagram of the hopper of the present invention;

[0053] Fig. 9 For the present invention Figure 4 Schematic diagram of the enlarged structure of area A in the middle.

[0054] In the figure: 1. box body; 2. hopper; 3. bracket; 4. motor; 5. main shaft; 6. horizontal shaft; 7. traction block; 8. spline shaft; 9. stirring shaft; 10. stirring blade; 11. driving shaft; 12. support frame; 13. rack; 14. first gear; 15. vertical plate; 16. slide groove; 17. guide rod; 18. limit sleeve; 19. connecting rod; 20. base; 21. upper gear group; 22. lower gear group; 23. second gear; 24. guide groove; 25. guide block; 26. discharge port. DETAILED DESCRIPTION

[0055] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Various examples may omit, replace, or add various processes or components as needed. In addition, the features described in some examples may also be combined in other examples.

[0056] The invention provides Figures 1 to 9As shown, a petroleum wastewater treatment device includes a box body 1 and a hopper 2. A bracket 3 is installed on the top of the box body 1, and a stirring mechanism is arranged on the bracket 3. The stirring mechanism includes a motor 4, a main shaft 5, a transverse shaft 6, a traction block 7 and a spline shaft 8. The motor 4 is fixedly installed on the top of the bracket 3, the main shaft 5 is rotatably connected to the bottom of the bracket 3 and is connected to the output end of the motor 4, two transverse shafts 6 are symmetrical and horizontally rotatably connected to the surface of the main shaft 5, the traction block 7 is horizontally slidably connected to the surface of the transverse shaft 6 through a traction structure, one end of the transverse shaft 6 is connected to the inner wall of the box body 1 through a driving structure, the bottom of the traction block 7 is rotatably connected with a spline shaft 8, the surface of the spline shaft 8 is sleeved with a stirring shaft 9, and the surface of the stirring shaft 9 is vertically fixedly connected with a stirring blade 10, the spline shaft 8 cooperates with the transverse shaft 6 through a reciprocating structure to drive the stirring blade 10 to reciprocate around the stirring shaft 9, and the hopper 2 is vertically slidably installed above the traction block 7 and cooperates with the reciprocating structure.

[0057] See also Figure 1 and Figure 2 The motor 4 drives the horizontal axis 6 to revolve through the main axis 5, and the horizontal axis 6 reciprocates on the surface of the main axis 5 through the driving structure, so that the horizontal axis 6 drives the traction block 7 to move horizontally on the surface of the horizontal axis 6 through the traction structure, and then the traction block 7 drives the stirring blade 10 to reciprocate and reciprocate through the reciprocating structure while performing vertical reciprocating motion, and at the same time, the hopper 2 performs vertical reciprocating motion under the action of the reciprocating structure to achieve uniform mixing of the medicine and sewage.

[0058] Among them, the reciprocating structure includes a driving shaft 11, a support frame 12, a rack 13 and a first gear 14. The driving shaft 11 is rotatably connected to one end of the horizontal axis 6, the support frame 12 is fixedly installed on the surface of the horizontal axis 6, and the support frame 12 is sleeved on the surface of the driving shaft 11. The rack 13 is fixedly installed on the inner wall of the support frame 12, and the first gear 14 is key-connected to the surface of the spline shaft 8 and cooperates with the rack 13.

[0059] See also Figure 4 The driving structure drives the driving shaft 11 to reciprocate at one end of the horizontal axis 6, and the horizontal axis 6 drives the traction block 7 to reciprocate horizontally through the traction structure, so that the traction block 7 drives the first gear 14 to cooperate with the rack 13 when moving, thereby realizing the rotation of the spline shaft 8. When the traction block 7 moves from one end to the other end inside the support frame 12, the first gear 14 is driven by the rack 13 to switch the rotation direction, and the petroleum sewage inside the box body 1 is applied with thrust in different directions by reciprocating the stirring blade 10, thereby improving the stirring effect on the sewage, so that the agent can be fully mixed with the sewage.

[0060] At the same time, the reciprocating structure also includes a vertical plate 15, a slide groove 16 and a guide rod 17. The two vertical plates 15 are fixedly installed in parallel on the inner wall of the support frame 12. The slide groove 16 is arranged on the surface of the vertical plate 15, and the projection of the slide groove 16 on the vertical plane is wavy. The guide rod 17 is fixedly connected to the surface of the hopper 2 and slidably connected to the inside of the slide groove 16.

[0061] See also Figure 4 , Figure 7 and Figure 8 When the traction block 7 drives the hopper 2 to reciprocate, it drives the guide rod 17 to move synchronously, so that the guide rod 17 slides inside the slide groove 16, and then drives the hopper 2 to reciprocate in the vertical direction to shake out the residual medicine in the hopper 2. In the initial state, the guide rod 17 is located at one end of the slide groove 16. When the traction block 7 performs a complete unidirectional horizontal movement, the guide rod 17 reaches the other end of the slide groove 16. In this process, since the projection of the guide rod 17 on the vertical plane is wavy, and for the guide rod 17, the guide rod 17 always moves along the trajectory of the slide groove 16, the guide rod 17 can drive the hopper 2 to move following the height change of the slide groove 16 in the vertical direction, so as to realize the shaking of the hopper 2 in the vertical direction.

[0062] It should be noted that a discharge port 26 is inclined on the surface of the hopper 2, and the cross-section of the bottom of the hopper 2 is arranged as an isosceles triangle structure. The medicine inside the hopper 2 can be discharged from the hopper 2 to the inside of the box body 1 through the inclined discharge port 26, and the cross-section of the bottom of the inner cavity of the hopper 2 is high in the middle and low on both sides. Therefore, when the hopper 2 shakes, the medicine on its inner wall will move toward a lower height, so that these medicines can gather at the discharge port 26, so as to facilitate the accurate discharge of the medicines.

[0063] It should be known that, under the action of the above structure, the hopper 2 will revolve with the main shaft 5, and at the same time, it can follow the traction block 7 to perform horizontal reciprocating motion on the surface of the horizontal axis 6, and at the same time, it will perform vertical reciprocating shaking on the top of the support frame 12, so that the medicine inside the hopper 2 can be evenly sprinkled on the surface of the sewage in the box body 1, and the stirring blade 10 can revolve around the stirring shaft 9 while following the overall revolution of the stirring shaft 9, and can also perform synchronous vertical reciprocating motion with the hopper 2 to achieve multi-directional stirring of the sewage, and cooperate with the continuous and uniform entry of the medicine into the box body 1 to achieve uniform mixing of the sewage and the medicine.

[0064] See also Fig. 9 The surface of the stirring shaft 9 is rotatably connected with a limiting collar 18 , and a connecting rod 19 is fixedly installed on the surface of the limiting collar 18 , and the top end of the connecting rod 19 is fixedly connected to one end of the guide rod 17 .

[0065] It should be noted that the connection between the limit collar 18 and the agitator shaft 9 needs to ensure that there is no vertical relative movement between the limit collar 18 and the agitator shaft 9. Only then can the vertical reciprocating motion of the guide rod 17 drive the connecting rod 19 to move synchronously, and finally the connecting rod 19 and the limit collar 18 drive the agitator shaft 9 to move synchronously on the surface of the spline shaft 8.

[0066] The driving structure includes a base 20, an upper gear group 21, a lower gear group 22 and a second gear 23. The two bases 20 are horizontally fixedly installed on the inner wall of the box body 1, multiple upper gear groups 21 are fixedly installed on the bottom of one of the bases 20, and multiple lower gear groups 22 are fixedly installed on the top of the other base 20, and the upper gear groups 21 and the lower gear groups 22 are staggered in the vertical direction. The second gear 23 is keyed to the surface of the driving shaft 11, and the second gear 23 is matched with the upper gear group 21 and the lower gear group 22.

[0067] See also Figure 3 The second gear 23 can follow the driving shaft 11 to revolve between the two bases 20, so that the upper gear set 21 and the lower gear set 22 respectively drive the second gear 23 to rotate, thereby realizing the reciprocating rotation of the driving shaft 11. It is assumed that the second gear 23 first contacts the upper gear set 21. At this time, it is assumed that the second gear 23 can rotate clockwise. When the second gear 23 is about to disengage from the surface of the upper gear set 21, the second gear 23 will contact the lower gear set 22 adjacent to the upper gear set 21. When the second gear 23 continues to revolve, the second gear 23 will contact the lower gear set 22. At this time, the second gear 23 rotates counterclockwise. Through the above process, the reciprocating rotation of the second gear 23 can be realized by continuously driving the second gear 23 to revolve in one direction under the drive of the main shaft 5, the transverse shaft 6 and the driving shaft 11.

[0068] The traction structure includes a guide groove 24 and a guide block 25 . The guide groove 24 is arranged on the surface of the driving shaft 11 in a spiral structure. The guide block 25 is fixedly mounted on the inner wall of the traction block 7 and slidably connected to the inside of the guide groove 24 .

[0069] See also Figure 5 and Figure 6 The driving shaft 11 drives the guide groove 24 to rotate, so that the guide groove 24 drives the traction block 7 to move horizontally on the surface of the driving shaft 11 through cooperation with the guide block 25. The driving shaft 11 drives the guide groove 24 to rotate synchronously. Since the guide groove 24 is a spiral structure as a whole, when the guide groove 24 rotates, for a fixed point on the guide groove 24, it will provide an axial thrust to the guide block 25 of the driving shaft 11, so that the guide block 25 can drive the traction block 7 to move horizontally along the axial direction on the surface of the driving shaft 11.

[0070] It should be noted that when the second gear 23 orbits a complete upper gear set 21 or lower gear set 22 between the two bases 20, the number of turns of the driving shaft 11 is the same as the number of turns of the second gear 23, so the number of turns of the guide groove 24 should also be the same as the number of turns of the driving shaft 11, and it is necessary to make the guide block 25 move from one end of the guide groove 24 to the other end. Assuming that Figure 5 As shown in FIG. 1 , the number of spiral turns of the guide groove 24 is set to 5 turns, so the second gear 23 needs to rotate 5 turns. Figure 3 and Figure 5 The transmission ratio of the second gear 23 and the upper gear set 21 or the lower gear set 22 shown in the figure is only a schematic diagram, not an actual transmission ratio.

[0071] This embodiment also provides a method for treating petroleum wastewater, comprising the following steps:

[0072] S1, the motor 4 drives the main shaft 5 to rotate, and at the same time, the motor 4 can drive the transverse shaft 6 to reciprocate and rotate on the surface of the main shaft 5 through the cooperation of the driving mechanism, so that the transverse shaft 6 drives the traction block 7 to reciprocate horizontally on the surface of the transverse shaft 6 through the traction structure, and at this time, the traction block 7 can cooperate with the reciprocating structure to realize the reciprocating spraying of the hopper 2;

[0073] S2, the traction block 7 can drive the spline shaft 8 to move synchronously during the reciprocating horizontal motion, and the spline shaft 8 can drive the stirring blade 10 to perform synchronous horizontal reciprocating motion through the stirring shaft 9. At the same time, the stirring blade 10 can reciprocate around the stirring shaft 9 under the drive of the reciprocating structure to stir the sewage so that it is evenly mixed with the reagent;

[0074] S3. The reciprocating structure can also enable the hopper 2 to perform vertical reciprocating motion while performing horizontal reciprocating motion, so that the medicine inside the hopper 2 can fall off from the inner wall of the hopper 2 due to vibration and be discharged into the inside of the box 1. At the same time, the stirring blade 10 can also perform vertical reciprocating motion with the hopper 2, so that the medicine can be further evenly mixed with the sewage.

[0075] The above describes an embodiment of the present invention, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Under the guidance of this embodiment, ordinary technicians in this field can also make many forms, all of which are protected by this embodiment.

Claims

1. A petroleum wastewater treatment device, comprising a housing (1) and a hopper (2), characterized in that: A bracket (3) is installed on the top of the box body (1), and a stirring mechanism is arranged on the bracket (3), wherein the stirring mechanism comprises: A motor (4), wherein the motor (4) is fixedly mounted on the top of the bracket (3); A main shaft (5), the main shaft (5) being rotatably connected to the bottom of the bracket (3) and connected to an output end of the motor (4); A transverse axis (6), wherein the two transverse axes (6) are symmetrically and horizontally rotatably connected to the surface of the main axis (5); A traction block (7), wherein the traction block (7) is horizontally slidably connected to the surface of the transverse shaft (6) via a traction structure, and one end of the transverse shaft (6) is connected to the inner wall of the box body (1) via a driving structure; and A spline shaft (8), the bottom of the traction block (7) is rotatably connected to the spline shaft (8), the surface of the spline shaft (8) is sleeved with a stirring shaft (9), the surface of the stirring shaft (9) is vertically fixedly connected to a stirring blade (10), the spline shaft (8) cooperates with the horizontal shaft (6) through a reciprocating structure to drive the stirring blade (10) to reciprocate around the stirring shaft (9), and the hopper (2) is vertically slidably installed above the traction block (7) to cooperate with the reciprocating structure; The motor (4) drives the transverse shaft (6) to revolve through the main shaft (5), and the transverse shaft (6) reciprocates and rotates on the surface of the main shaft (5) through the driving structure, so that the transverse shaft (6) drives the traction block (7) to move horizontally on the surface of the transverse shaft (6) through the traction structure, thereby causing the traction block (7) to drive the stirring blade (10) to reciprocate and revolve while reciprocating in the horizontal direction, and at the same time causing the hopper (2) to reciprocate in the horizontal direction, so as to achieve uniform mixing of the medicine and the sewage; A drive shaft (11), the drive shaft (11) being rotatably connected to one end of the transverse shaft (6); A support frame (12), the support frame (12) being fixedly mounted on the surface of the transverse shaft (6), and the support frame (12) being sleeved on the surface of the driving shaft (11); a rack (13), the rack (13) being fixedly mounted on an inner wall of the support frame (12); and A first gear (14), the first gear (14) being key-connected to the surface of the spline shaft (8) and matching with the rack (13); The driving structure drives the driving shaft (11) to rotate reciprocatingly at one end of the transverse shaft (6), and the transverse shaft (6) drives the traction block (7) to reciprocate horizontally through the traction structure, so that the traction block (7) drives the first gear (14) to cooperate with the rack (13) when moving, thereby realizing the rotation of the spline shaft (8); Vertical plates (15), two vertical plates (15) being fixedly mounted in parallel on the inner wall of the support frame (12); A slide groove (16), wherein the slide groove (16) is arranged on the surface of the vertical plate (15), and the projection of the slide groove (16) on the vertical plane is wavy; and A guide rod (17), the guide rod (17) being fixedly connected to the surface of the hopper (2) and slidably connected to the interior of the chute (16); When the traction block (7) drives the hopper (2) to reciprocate, it drives the guide rod (17) to move synchronously, so that the guide rod (17) slides inside the slide groove (16), thereby driving the hopper (2) to reciprocate in the vertical direction, so as to shake out the medicine remaining in the hopper (2).

2. A petroleum wastewater treatment device according to claim 1, characterized in that: The surface of the stirring shaft (9) is rotatably connected to a limit collar (18), a connecting rod (19) is fixedly mounted on the surface of the limit collar (18), and the top end of the connecting rod (19) is fixedly connected to one end of the guide rod (17).

3. A petroleum wastewater treatment device according to claim 2, characterized in that: The driving structure comprises: Bases (20), two bases (20) being horizontally fixedly mounted on the inner wall of the box body (1); An upper gear set (21), wherein a plurality of the upper gear sets (21) are fixedly mounted on the bottom of one of the bases (20); A lower gear tooth group (22), wherein a plurality of the lower gear tooth groups (22) are fixedly mounted on the top of another base (20), and the upper gear tooth groups (21) and the lower gear tooth groups (22) are staggered in the vertical direction; and A second gear (23), the second gear (23) being key-connected to the surface of the drive shaft (11), and the second gear (23) being cooperatively connected to the upper gear tooth set (21) and the lower gear tooth set (22); The second gear (23) can follow the drive shaft (11) to revolve between the two bases (20), so that the upper gear set (21) and the lower gear set (22) respectively drive the second gear (23) to rotate, thereby achieving reciprocating rotation of the drive shaft (11).

4. A petroleum wastewater treatment device according to claim 3, characterized in that: The traction structure comprises: A guide groove (24), wherein the guide groove (24) is arranged on the surface of the drive shaft (11) in a spiral structure; and A guide block (25), the guide block (25) being fixedly mounted on the inner wall of the traction block (7) and slidably connected to the inside of the guide groove (24); The driving shaft (11) drives the guide groove (24) to rotate, so that the guide groove (24) drives the traction block (7) to move horizontally on the surface of the driving shaft (11) through cooperation with the guide block (25).

5. The petroleum wastewater treatment device according to claim 1, characterized in that: A discharge port (26) is arranged obliquely on the surface of the hopper (2), and a cross section of the bottom of the hopper (2) is arranged in an isosceles triangle structure.

6. A method for treating petroleum wastewater, based on a petroleum wastewater treatment device according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, the motor (4) drives the main shaft (5) to rotate and can simultaneously drive the transverse shaft (6) to reciprocate and rotate on the surface of the main shaft (5) through the cooperation of the driving mechanism, so that the transverse shaft (6) drives the traction block (7) to reciprocate horizontally on the surface of the transverse shaft (6) through the traction structure, and at this time, the traction block (7) can cooperate with the reciprocating structure to realize the reciprocating spraying of the hopper (2); S2, the traction block (7) can drive the spline shaft (8) to move synchronously when it reciprocates horizontally, and the spline shaft (8) can then drive the stirring blade (10) to perform synchronous horizontal reciprocating motion through the stirring shaft (9), and at the same time, driven by the reciprocating structure, the stirring blade (10) can reciprocate around the stirring shaft (9) to stir the sewage so that it is evenly mixed with the reagent; S3. The reciprocating structure can also cause the hopper (2) to simultaneously perform a vertical reciprocating motion during the horizontal reciprocating motion, so that the medicine inside the hopper (2) can fall off the inner wall of the hopper (2) due to vibration and be discharged into the interior of the box body (1). At the same time, the stirring blade (10) can also perform a vertical reciprocating motion along with the hopper (2), so that the medicine can be further evenly mixed with the sewage.

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