Coking wastewater treatment plant

Abstract

The present application provides a kind of coking wastewater treatment equipment, comprising: settling tank;Stirring device, including shaft, for driving shaft rotation first motor and rotationally connected in the lower part of a plurality of stirring rods of shaft, the lower part of shaft is provided with accommodating space, stirring rod is equipped with a plurality of feeding holes, feeding hole is communicated with accommodating space;Lifting assembly, for supporting first motor;Feed pipe, the output end of feed pipe is provided in accommodating space;Adjusting assembly, including connecting rod, connecting rod outer wall is provided with a plurality of slots corresponding to a plurality of stirring rods, the sidewall of one side of slot is fixed with first rack, one end of stirring rod is provided in the inside of slot, and is sleeved with first gear engaged with first rack.The present application is mixed with coking wastewater by stirring device and feed pipe, and the stirring plate can be adjusted to the best inclination angle according to the flocculation of coking wastewater by lifting assembly and adjusting assembly, and then effectively improve flocculation effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment equipment, in particular to a coking wastewater treatment equipment. BACKGROUND

[0002] Coking wastewater is a typical toxic and refractory organic wastewater. In the prior art, the purification treatment of coking wastewater is mostly to discharge the coking wastewater after biochemical treatment to a secondary sedimentation tank, and then to a coagulation reaction tank, and at the same time, a flocculating agent is added in the coagulation reaction tank, so that the flocculating agent is mixed with the coking wastewater in the coagulation reaction tank. After the coking wastewater is flocculated and settled, an upper water body and a lower sediment are formed in the coking wastewater, and finally the upper water body is pumped out, and the lower sediment is discharged, so that the water body and the sediment are separated, and the purification of the coking wastewater is realized.

[0003] However, there are problems such as insufficient mixing and incomplete reaction of the flocculating agent and the coking wastewater during the mixing process, which affects the flocculation effect. In addition, the reaction time of the flocculating agent is about 20-50 minutes, and the stirring mode of the prior art is single, which cannot adjust the stirring device according to the flocculation condition, causing insufficient reaction. SUMMARY

[0004] The main purpose of the present application is to provide a coking wastewater treatment equipment to solve the problems of insufficient mixing and incomplete reaction of the flocculating agent and the coking wastewater in the prior art, and the problem that the stirring device cannot be adjusted according to the flocculation condition. In order to solve the above problems, the technical scheme is as follows:

[0005] A coking wastewater treatment equipment, comprising:

[0006] A settling tank, which is provided with a water inlet, a sewage outlet and a water pumping assembly respectively;

[0007] A stirring device, comprising a shaft vertically arranged in the interior of the settling tank, a first motor for driving the shaft to rotate, and a plurality of stirring rods rotationally connected to the lower part of the shaft, the plurality of stirring rods being uniformly arranged along the circumference of the shaft, the lower part of the shaft being provided with an accommodation space, the stirring rods being provided with a plurality of feeding holes, the feeding holes being in communication with the accommodation space;

[0008] A lifting assembly fixedly arranged on the top of the settling tank, for supporting the first motor and driving the first motor to move up and down;

[0009] A feeding pipe for conveying the flocculating agent into the interior of the settling tank, the output end of the feeding pipe being vertically arranged in the accommodation space from bottom to top, so that the accommodation space forms a closed space;

[0010] The adjusting assembly comprises a connecting rod rotatably connected to the top end of the feeding pipe, the central axis of the connecting rod is in line with the central axis of the feeding pipe, a plurality of slots are formed in the outer wall of the connecting rod, the plurality of slots correspond to the plurality of stirring rods one by one, a first rack is fixedly arranged on one side wall of the slot, one end of the stirring rod is arranged in the slot, and a first gear engaged with the first rack is sleeved.

[0011] Further, the stirring rod comprises a feeding pipe and a stirring plate, the feeding pipe is a hollow cylindrical rod with an open end, a plurality of feeding holes are uniformly arranged along the length direction of the feeding pipe and communicate with the inside of the feeding pipe, the open end of the feeding pipe is rotatably connected to the side wall of the shaft rod and communicates with the containing space, and the stirring plate is fixedly arranged on the side of the feeding pipe away from the feeding hole.

[0012] Further, the lifting assembly comprises a fixing plate for supporting the first motor and two electric telescopic cylinders vertically fixed to the bottom surface of the fixing plate, and the two electric telescopic cylinders are respectively located on the two sides of the first motor in the radial direction.

[0013] Further, the bottom surface in the inside of the settling tank is provided with a discharging groove, one end of the discharging groove communicates with the blowdown opening, and a discharging assembly for quickly discharging the precipitate of the coking wastewater is arranged in the discharging groove.

[0014] Further, the discharging assembly comprises a rotating rod, the axial direction of the rotating rod is parallel to the axial direction of the discharging groove, a screw blade is fixedly sleeved outside the rotating rod, and a second motor for driving the rotating rod to rotate is fixedly arranged outside the settling tank.

[0015] Further, the discharging groove is two, the two discharging grooves are respectively located on the two sides of the settling tank in the radial direction, and the discharging assembly is arranged in each discharging groove.

[0016] Further, the inside of the settling tank is provided with a cleaning assembly, the cleaning assembly comprises a sleeve pipe movably sleeved outside the peripheral surface of the feeding pipe, a plurality of scrapers are uniformly distributed on the outer side wall of the sleeve pipe along the circumferential direction of the sleeve pipe, the bottom surface of the scraper abuts against the bottom surface in the inside of the settling tank, a plurality of clamping grooves are uniformly distributed on the top end of the sleeve pipe along the circumferential direction of the sleeve pipe, and a plurality of clamping blocks are protrudingly arranged on the bottom end of the shaft rod corresponding to the plurality of clamping grooves.

[0017] Further, the water pumping assembly comprises a water pump and a water pumping pipe, the output end of the water pumping pipe communicates with the water pump, the input end of the water pumping pipe extends into the inside of the settling tank through the top wall of the settling tank, and a moving assembly for adjusting the height of the input end of the water pumping pipe is arranged on the settling tank.

[0018] Further, the moving assembly comprises a screw rod vertically arranged at one side of the inside of the settling tank, and a moving block screwed on the screw rod, one side of the moving block being in sliding connection with the inner wall of the settling tank, and the other side of the moving block being provided with a clamp for clamping the input end of the water pumping pipe, and the top surface of the settling tank is fixedly provided with a third motor for driving the screw rod to rotate.

[0019] Further, a slide is vertically and fixedly arranged on the inner wall of the settling tank, and a sliding groove matched with the slide is formed on the side of the moving block close to the slide.

[0020] The beneficial effects of the present application are:

[0021] 1. The stirring device and the feeding pipe can directly add flocculants into the coking wastewater during the stirring process, so that the flocculants can be fully mixed with the coking wastewater; meanwhile, the stirring plate can be adjusted to the optimal inclination angle according to the flocculation condition of the coking wastewater through the cooperation of the lifting assembly and the adjusting assembly, so as to avoid the damage of flocculant molecules caused by excessive stirring amplitude, and to prevent the insufficient dissolution of flocculants caused by small stirring amplitude, thereby effectively improving the flocculation effect.

[0022] 2. The discharge assembly is arranged to quickly discharge the precipitate in the settling tank, so as to avoid the blockage of the sewage outlet.

[0023] 3. The cleaning assembly is arranged to scrape off the precipitate attached to the bottom surface of the settling tank, so as to avoid the accumulation of the precipitate and affect the next use of the settling tank, and the cooperation of the plurality of clamping grooves and the plurality of clamping teeth can control the rotation of the cleaning assembly without additional power.

[0024] 4. The water pumping assembly and the moving assembly are arranged to maximize the pumping of clean water, while avoiding the reduction of pumping of the precipitate wastewater. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Figure 1 is a perspective view of the coking wastewater treatment equipment of the present application;

[0027] Figure 2 is a top view of the coking wastewater treatment equipment of the present application;

[0028] Figure 3 is a view of A-A of Figure 2 ;

[0029] Figure 4 is a view of B-B of Figure 3 ;

[0030] Figure 5: it is internal structure schematic view of the invention coking wastewater treatment equipment;

[0031] Figure 6 : it is structure schematic view of the adjusting assembly;

[0032] Figure 7 : it is structure schematic view of the cleaning assembly sleeve set outside the feed pipe.

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 1, sedimentation tank; 11, water inlet; 12, sewage outlet; 13, discharge chute; 14, slide; 2, pumping assembly; 21, water pump; 22, pumping pipe; 3, stirring device; 31, shaft; 311, containing space; 312, clamping block; 313, bearing; 32, stirring rod; 321, feeding pipe; 3211, feeding hole; 3212, first gear; 322, stirring plate; 33, first motor; 4, lifting assembly; 41, fixed plate; 42, electric telescopic cylinder; 5, feed pipe; 6, adjusting assembly; 60, connecting rod; 61, notch; 62, first rack; 7, discharge assembly; 71, rotating rod; 72, auger blade; 73, second motor; 8, cleaning assembly; 81, sleeve; 811, clamping groove; 82, slag scraping plate; 9, moving assembly; 91, screw rod; 92, moving block; 921, sliding groove; 93, clamping; 94, third motor. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. In the following description, a lot of specific details are set forth in order to give a full and thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the spirit of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0036] Please refer to Figures 1 to 7As shown in the figure, a coking wastewater treatment device comprises a settling tank 1, a water pumping assembly 2, a stirring device 3, a lifting assembly 4, a feeding pipe 5 and an adjusting assembly 6. The settling tank 1 is a hollow cylindrical barrel. The top end of the settling tank 1 is provided with a water inlet 11 for injecting coking wastewater into the settling tank 1. The bottom end of the settling tank 1 is provided with a blowdown port 12 on one side for discharging the precipitate after flocculation and sedimentation of the coking wastewater. The stirring device 3 is used to stir the coking wastewater to fully mix the coking wastewater and the flocculant. The output end of the feeding pipe 5 is communicated with the stirring device 3, and the stirring device 3 can be used to supply the flocculant into the settling tank 1 to achieve the purpose of mixing the flocculant and the coking wastewater while stirring. The lifting assembly 4 is used to adjust the height of the stirring device 3, thereby adjusting the relative position relationship between the adjusting assembly 6 and the stirring device 3. At the same time, the stirring mode of the stirring device 3 is adjusted according to the mixing condition of the flocculant and the coking wastewater in cooperation with the adjusting assembly 6. The water pumping assembly 2 is arranged above the settling tank 1 and is used to pump out the clean water after flocculation and sedimentation of the coking wastewater and discharge it to the next process for further purification.

[0037] In practice, the staff injects the coking wastewater into the settling tank 1 through the water inlet 11 of the settling tank 1, and starts the stirring device 3 to stir the coking wastewater. At the same time, the flocculant is added into the stirring device 3 through the feeding pipe 5, and the flocculant is discharged through the stirring device 3 to achieve the purpose of mixing while stirring. During the stirring and mixing process of the coking wastewater and the flocculant, the stirring speed that is too fast or too slow will affect the mixing effect of the flocculant and the coking wastewater. In the actual stirring process, the height of the lifting assembly 4 can be adjusted according to the actual flocculation state, and the stirring state of the stirring device 3 is adjusted in cooperation with the adjusting assembly 6, thereby achieving the purpose of fully mixing the flocculant and the coking wastewater. After the precipitate is separated from the water, the water pumping assembly 2 is started to pump out the clean water, and then the precipitate is discharged through the blowdown port 12.

[0038] As shown in Figure 3 , Figure 5 and Figure 6 , the stirring device 3 comprises a shaft 31, a stirring rod 32 and a first motor 33. The shaft 31 is vertically arranged in the interior of the settling tank 1. The first motor 33 is arranged above the settling tank 1. The output end of the first motor 33 is fixedly connected with the top end of the shaft 31 through the top wall of the settling tank 1, and is used to drive the shaft 31 to rotate. The lower part of the shaft 31 is provided with a containing space 311, i.e. the bottom end of the shaft 31 is provided with an opening. The interior of the lower part of the shaft 31 is a hollow structure to form the containing space 311. The stirring rod 32 is a plurality of stirring rods. The plurality of stirring rods 32 are located at the lower part of the shaft 31 and are uniformly arranged along the circumference of the shaft 31. The stirring rod 32 is provided with a plurality of feeding holes 3211. The feeding holes 3211 are communicated with the containing space 311.

[0039] In the embodiment, each stirring rod 32 comprises a feeding pipe 321 and a stirring plate 322. The feeding pipe 321 is mainly used for conveying flocculants, and is a hollow cylindrical rod with an open end. A plurality of feeding holes 3211 are uniformly arranged along the length direction of the feeding pipe 321 and communicate with the inside of the feeding pipe 321. The open end of the feeding pipe 321 communicates with the containing space 311 of the shaft 31 through the outer side wall of the shaft 31, and the feeding pipe 321 is rotationally connected to the outer side wall of the shaft 31. That is, the feeding pipe 321 is rotationally connected to the outer side wall of the shaft 31, that is, the feeding pipe 321 can rotate along its own axis, and at the same time, it can also rotate with the shaft 31 along the central axis of the shaft 31. It should be noted that the outer side wall of the shaft 31 can be fixedly provided with a bearing 313 in the prior art, and the feeding pipe 321 is rotationally connected to the outer side wall of the shaft 31 through the bearing 313, which will not be described here. In the embodiment, the stirring plate 322 is a rectangular plate used for stirring coking wastewater, and is fixedly arranged on the feeding pipe 321. The length direction of the stirring plate 322 is parallel to the axis of the feeding pipe 321. Preferably, the stirring plate 322 is fixedly arranged on the side of the feeding pipe 321 away from the feeding hole 3211.

[0040] Please refer to Figure 3 As shown in the figure, the feeding pipe 5 is used for conveying flocculants into the inside of the settling tank 1. The input end of the feeding pipe 5 is located outside the settling tank 1, and is used for connecting a flocculant storage tank (not shown in the figure) and conveying flocculants into the output end of the feeding pipe 5 through a pressure pump in the prior art. In the embodiment, the output end of the feeding pipe 5 is vertically arranged in the containing space 311 of the shaft 31 from bottom to top after penetrating through the bottom surface of the settling tank 1, and is rotationally connected to the shaft 31 through a sealing bearing, so that the containing space 311 forms a sealed space. It should be noted that the flocculant used in the present application is a liquid flocculant. In the implementation, the pressure pump is started to convey the flocculants in the storage tank into the containing space 311 of the shaft 31 through the feeding pipe 5, and then the flocculants are discharged into the inside of the settling tank 1 through the feeding pipe 321 and the feeding hole 3211 which communicate with the containing space 311.

[0041] Please refer to Figures 3 to 7 As shown in the figure, the adjusting assembly 6 comprises a connecting rod 60 which is a hollow rod body with an open bottom end and is arranged in the containing space 311 of the shaft 31. The bottom end of the connecting rod 60 is inserted into the top end of the feeding pipe 5 and is rotationally connected to the feeding pipe 5 through a sealing bearing. A plurality of notches 61 are arranged on the outer side wall of the connecting rod 60 and are uniformly arranged along the circumference of the connecting rod 60, and the plurality of notches 61 correspond to the plurality of stirring rods 32 one by one. A first rack 62 is fixedly arranged on one side of the side wall of the notch 61, and the length direction of the first rack 62 is parallel to the axial direction of the shaft 31. One end of the stirring rod 32 close to the feeding pipe 5 is arranged in the inside of the notch 61 and is sleeved with a first gear 3212 which is engaged with the first rack 62.

[0042] The lifting assembly 4 is used to support and connect the first motor 33 and drive the first motor 33 to move up and down. In the embodiment, the lifting assembly 4 comprises a fixed plate 41, the first motor 33 is fixedly arranged on the top surface of the fixed plate 41, two electric telescopic cylinders 42 are fixedly arranged between the top surface of the fixed plate 41 and the top surface of the settling tank 1, the two electric telescopic cylinders 42 are respectively located on the two sides of the first motor 33 in the radial direction, the bottom ends of the two electric telescopic cylinders 42 are fixedly connected with the top surface of the settling tank 1, and the output ends of the two electric telescopic cylinders 42 are fixedly connected with the bottom surface of the fixed plate 41.

[0043] In the implementation, the first motor 33 drives the shaft rod 31 to rotate, and the shaft rod 31 drives the stirring rod 32 to rotate. At this time, since the first rack 62 is engaged with the first gear 3212, the connecting rod 60 will rotate together with the shaft rod 31. When it is necessary to adjust the stirring mode, the staff adjusts the telescopic height of the output end of the two electric telescopic cylinders 42 to adjust the height of the stirring device 3, and then adjusts the relative position of the connecting rod 60 in the accommodating space 311 of the shaft rod 31. And through the adjustment of the lifting assembly 4, the height of the first gear 3212 relative to the first rack 62 rises or falls, and since the feeding pipe 321 is rotationally connected with the side wall of the shaft rod 31, that is, the feeding pipe 321 can rotate along the central axis thereof, therefore, during the rising or falling of the first rack 62, the first gear 3212 fixedly arranged on the outside of the feeding pipe 321 will rotate, and then drive the feeding pipe 321 and the stirring plate 322 fixedly arranged on one side of the feeding pipe 321 to rotate, so as to change the cutting angle of the stirring plate 322 to the coking wastewater. In the actual working process, the staff can timely adjust the stirring plate 322 to the best inclination angle according to the flocculation condition of the coking wastewater, so as to avoid the situation that the stirring amplitude is too large to damage the flocculant molecules, and also avoid the situation that the stirring amplitude is too small to cause the insufficient dissolution of the flocculant, and then effectively improve the flocculation effect.

[0044] Please refer to Figure 4 Figure 5 As shown in the drawings, in the embodiment, the bottom surface inside the settling tank 1 is provided with a discharge chute 13, the axial direction of the discharge chute 13 is the same as the axial direction of the discharge port, and both are horizontally arranged, and one end of the discharge chute 13 is communicated with the blowdown port 12. The discharge chute 13 is provided with a discharge assembly 7 for quickly discharging the settled substances of the coking wastewater, so as to avoid the slow discharge of the settled substances after precipitation, even block the discharge port, and affect the subsequent treatment of the coking wastewater.

[0045] The discharge assembly 7 comprises a rotating rod 71, auger blades 72 and a second motor 73. The rotating rod 71 is arranged inside the discharge chute 13, and the axial direction of the rotating rod 71 is parallel to the axial direction of the discharge chute 13. The auger blades 72 are rotatably sleeved on the outer side of the rotating rod 71. The second motor 73 is fixedly arranged on the outside of the settling tank 1, and the output end of the second motor 73 is fixedly connected with one end of the rotating rod 71 through the side wall of the settling tank 1. In the implementation, the blowdown port 12 is first opened, and then the second motor 73 is started to drive the rotating rod 71 and the auger blades 72 to rotate, so that the sediment at the bottom of the settling tank 1 can be quickly discharged, avoiding the blockage of the discharge port by the sediment. In the embodiment, the discharge chute 13 is two, and the two discharge chutes 13 are respectively arranged on the two radial sides of the settling tank 1. Each discharge chute 13 is provided with a discharge assembly 7, so as to further quickly treat the sediment at the bottom of the settling tank 1, avoiding affecting the treatment speed of the coking wastewater.

[0046] As shown in Figure 3 、 Figure 5 、 Figure 6 and Figure 7 , preferably, the inside of the settling tank 1 is provided with a cleaning assembly 8 for scraping the sediment attached to the bottom surface of the settling tank 1, avoiding affecting the next use of the settling tank 1. The cleaning assembly 8 comprises a sleeve 81 and a plurality of scrapers 82. The sleeve 81 is movably sleeved on the outer peripheral surface of the feed pipe 5. The top end of the sleeve 81 is uniformly provided with a plurality of clamping grooves 811 along the circumferential direction of the sleeve 81. The bottom end of the shaft 31 is provided with a plurality of clamping blocks 312 corresponding to the plurality of clamping grooves 811. The plurality of scrapers 82 are arranged along the circumferential direction of the sleeve 81 and are fixedly connected with the sleeve 81. The bottom surface of the scraper 82 abuts against the bottom surface inside the settling tank 1, for scraping the sediment attached to the bottom surface of the settling tank 1. In the embodiment, the scrapers 82 are two and are symmetrically arranged on the two radial sides of the sleeve 81.

[0047] In the implementation, the lifting assembly 4 drives the shaft 31 of the stirring device 3 to move downward until the plurality of clamping blocks 312 at the bottom end of the shaft 31 are clamped in the clamping grooves 811 of the sleeve 81, and then the first motor 33 is started to rotate slowly. The first motor 33 drives the shaft 31, the sleeve 81 and the scraper 82 to rotate in sequence, so that the scraper 82 cleans the bottom surface inside the settling tank 1, avoiding affecting the next use of the settling tank 1.

[0048] As shown in Figure 3 and Figure 5 , in the embodiment, the water pumping assembly 2 comprises a water pump 21 and a water pumping pipe 22. The output end of the water pumping pipe 22 is communicated with the water pump 21. The input end of the water pumping pipe 22 extends into the inside of the settling tank 1 through the top wall of the settling tank 1. In the implementation, the water pump 21 is started, and the water pumping pipe 22 pumps out the mixed water after precipitation and delivers it to the next process.

[0049] Preferably, the settling tank 1 is provided with a moving assembly 9 for adjusting the height of the input end of the water pumping pipe 22. The moving assembly 9 comprises a screw rod 91, a moving block 92, a clamp 93 and a third motor 94. The screw rod 91 is vertically arranged on one side of the inside of the settling tank 1 and located at the upper part of the settling tank 1. The moving block 92 is screwed on the screw rod 91, and one side of the moving block 92 is slidably connected with the inner wall of the settling tank 1. In this embodiment, a slide 14 is vertically and fixedly arranged on the inner wall of the settling tank 1. A sliding groove 921 is formed on the side of the moving block 92 close to the slide 14, so as to achieve the sliding connection of the moving block 92 with the inner wall of the settling tank 1. The other side of the moving block 92 is provided with the clamp 93 for clamping the input end of the water pumping pipe 22. That is, the side of the moving block 92 away from the sliding groove 921 is provided with the clamp 93. The input end of the water pumping pipe 22 is clamped on the clamp 93. The top surface of the settling tank 1 is fixedly provided with the third motor 94 for driving the screw rod 91 to rotate.

[0050] In the implementation, the third motor 94 is started to drive the screw rod 91 to rotate forward or reverse. At this time, the moving block 92 can ascend or descend along the axial direction of the screw rod 91, thereby driving the input end of the water pumping pipe 22 to ascend or descend. This can ensure that the clean water is pumped out to the maximum extent, while avoiding reducing the pumping out of the sediment and sewage.

[0051] In the implementation of the present application, the staff pours the coking wastewater into the settling tank 1 through the water inlet 11 of the settling tank 1, and then starts the stirring device 3 to stir the coking wastewater. At the same time, the flocculating agent is input into the accommodating space 311 of the shaft rod 31 through the feeding pipe 5. The flocculating agent is uniformly discharged into the inside of the settling tank 1 through the feeding pipe 321 and the feeding hole 3211 which are in communication with the accommodating space 311, so as to achieve the purpose of adding flocculating agent while stirring, thereby making the flocculating agent fully mixed with the coking wastewater. During the stirring process, the staff can adjust the lifting assembly 4 according to the flocculation condition of the coking wastewater. The lifting assembly 4 cooperates with the adjusting assembly 6 to adjust the stirring plate 322 to the optimal inclination angle. This can not only avoid the excessive stirring amplitude to damage the flocculating agent molecules, but also prevent the insufficient dissolution of the flocculating agent due to the small stirring amplitude, thereby effectively improving the flocculation effect. When the flocculation and mixing are completed, the stirring is stopped. After the coking wastewater is flocculated and settled, the upper water body and the lower sediment are formed in the inside of the settling tank 1. At this time, the moving assembly 9 is started to adjust the output end of the water pumping pipe 22 to the appropriate position for water pumping. After the water pumping is completed, the sewage outlet 12 is opened, and the discharging assembly 7 is started to quickly discharge the sediment in the settling tank 1. At the same time, the lifting assembly 4 drives the stirring device 3 to descend, so that the bottom end of the shaft rod 31 is clamped with the top end of the sleeve, thereby driving the cleaning assembly 8 to clean the bottom surface of the settling tank 1.

[0052] The above description is merely the preferred embodiments of the present application, and obviously, the described embodiments are only a part but not all of the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

Claims

1. A coking wastewater treatment device, characterized in that, include: Settling tank (1), which is provided with an inlet (11), a drain (12) and a pumping assembly (2). The stirring device (3) includes a shaft (31) vertically arranged inside the settling tank (1), a first motor (33) for driving the shaft (31) to rotate, and a plurality of stirring rods (32) rotatably connected to the lower part of the shaft (31). The plurality of stirring rods (32) are evenly arranged around the circumference of the shaft (31). The lower part of the shaft (31) is provided with a receiving space (311). The stirring rods (32) are provided with a plurality of feeding holes (3211), and the feeding holes (3211) are connected to the receiving space (311). The lifting assembly (4) is fixed on the top of the settling tank (1) and is used to support the first motor (33) and drive the first motor (33) to perform lifting and lowering movements. The feed pipe (5) is used to deliver flocculant into the settling tank (1). The output end of the feed pipe (5) is vertically inserted into the accommodating space (311) from bottom to top, so that the accommodating space (311) forms a closed space. The adjusting assembly (6) includes a connecting rod (60) rotatably connected to the top of the feed pipe (5). The central axis of the connecting rod (60) is collinear with the central axis of the feed pipe (5). Multiple slots (61) are provided on the outer side wall of the connecting rod (60). Each slot (61) corresponds to a multiple stirring rod (32). A first rack (62) is fixed on the side wall of one side of the slot (61). One end of the stirring rod (32) passes through the inside of the slot (61) and is fitted with a first gear (3212) that meshes with the first rack (62). The stirring rod (32) includes a feeding pipe (321) and a stirring plate (322). The feeding pipe (321) is a cylindrical rod with one open end and a hollow interior. A plurality of feeding holes (3211) are evenly arranged along the length of the feeding pipe (321) and communicate with the interior of the feeding pipe (321). The open end of the feeding pipe (321) is rotatably connected to the outer wall of the shaft (31) and communicates with the accommodating space (311). The stirring plate (322) is fixed on the side of the feeding pipe (321) away from the feeding holes (3211). The settling tank (1) is equipped with a scraper (82) assembly. The scraper (82) assembly includes a sleeve (81) that is movably sleeved on the outer peripheral surface of the feed pipe (5). On the outer wall of the sleeve (81), a plurality of scrapers (82) are evenly distributed along the circumference of the sleeve (81). The bottom surface of the scraper (82) abuts against the bottom surface inside the settling tank (1). The top end of the sleeve (81) is evenly distributed with a plurality of slots (811) along the circumference of the sleeve (81). The bottom end of the shaft (31) is provided with a plurality of locking blocks (312) corresponding to the plurality of slots (811).

2. The coking wastewater treatment equipment according to claim 1, characterized in that, The lifting assembly (4) includes a fixed plate (41) for supporting the first motor (33) and two electric telescopic cylinders (42) vertically fixed on the bottom surface of the fixed plate (41). The two electric telescopic cylinders (42) are located on the radial sides of the first motor (33).

3. The coking wastewater treatment equipment according to claim 1, characterized in that, The bottom surface inside the settling tank (1) is provided with a discharge trough (13), one end of which is connected to the sewage outlet (12). The discharge trough (13) is provided with a discharge assembly (7) for quickly discharging the sediments of coking wastewater.

4. The coking wastewater treatment equipment according to claim 3, characterized in that, The discharge assembly (7) includes a rotating rod (71), the axial direction of which is parallel to the axial direction of the discharge trough (13). An auger blade (72) is fixedly sleeved on the outside of the rotating rod (71), and a second motor (73) for driving the rotating rod (71) to rotate is fixedly provided on the outside of the settling tank (1).

5. The coking wastewater treatment equipment according to claim 4, characterized in that, There are two discharge troughs (13), which are located on the radial sides of the settling tank (1) respectively, and each discharge trough (13) is provided with a discharge assembly (7).

6. The coking wastewater treatment equipment according to claim 1, characterized in that, The pumping assembly (2) includes a water pump (21) and a pumping pipe (22). The output end of the pumping pipe (22) is connected to the water pump (21), and the input end of the pumping pipe (22) extends through the top wall of the settling tank (1) into the interior of the settling tank (1). The settling tank (1) is provided with a moving assembly (9) for adjusting the height of the input end of the pumping pipe (22).

7. The coking wastewater treatment equipment according to claim 6, characterized in that, The moving component (9) includes a screw (91) vertically disposed on one side inside the settling tank (1) and a moving block (92) screwed onto the screw (91). One side of the moving block (92) is slidably connected to the inner wall of the settling tank (1), and the other side of the moving block (92) is provided with a clamp (93) for engaging the input end of the pumping pipe (22). A third motor (94) for driving the screw (91) to rotate is fixed on the top surface of the settling tank (1).

8. The coking wastewater treatment equipment according to claim 7, characterized in that, The settling tank (1) is vertically fixed with a slide (14), and the moving block (92) has a groove (921) adapted to the slide (14) on the side near the slide (14).

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