Petrochemical wastewater treatment oil-water separation device

Abstract

The invention belongs to the technical field of wastewater treatment, and particularly relates to a petrochemical wastewater treatment oil-water separation device which comprises a separation box, one end of the separation box is fixedly connected with a water inlet pipe; the top of the water inlet pipe is fixedly connected with a slag removal hopper; a filter basket is mounted at the top of the slag removal hopper; a spiral feeding rod is arranged in the filtering basket; the top surface of the deslagging box is fixedly connected with a deslagging pipe at the spiral feeding rod, and the end surface of the deslagging pipe is fixedly connected with the surface of the filter basket; by means of filtering of the filtering basket, insoluble waste residues in waste water can be filtered in advance, and it is avoided that the waste residues are concentratedly precipitated in the separation box, so that the available volume of the separation box is reduced, and then normal use of the separation box is affected; meanwhile, waste residues in the filtering basket are continuously conveyed out of the filtering basket through the spiral feeding rod, it can be guaranteed that the filtering basket can be continuously used for a long time, and therefore the working efficiency of the device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, in particular to an oil-water separation device for treating petrochemical wastewater. Background Art

[0002] Petrochemical industry refers to the industry that uses petroleum and natural gas as raw materials to produce various chemicals and chemical products through chemical processing. This field is an important branch of the chemical industry. It involves the process of extracting, separating, converting and synthesizing a variety of chemicals from crude oil and natural gas. In the production process, oily wastewater will inevitably be produced. If it is directly discharged, it will have a greater impact on the external environment.

[0003] In the prior art, wastewater generated by petrochemical industry is mostly directly introduced into the grease trap for treatment. Due to the different densities of oil and water, the slowly moving wastewater in the grease trap is stratified, and then the liquids at different levels are separately recovered, treated and discharged, thereby reducing the impact on the natural environment.

[0004] In the prior art, there are a large number of granular impurities in the wastewater introduced into the grease trap. These impurities are not soluble in the wastewater, so they will directly settle at the bottom of the grease trap. After a long period of sedimentation, sludge will form at the bottom of the grease trap, affecting the normal use of the grease trap and increasing the difficulty of cleaning the grease trap for users.

[0005] To this end, the present invention provides an oil-water separation device for treating petrochemical wastewater. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the oil-water separation device for treating petrochemical wastewater described in the present invention comprises a separation box; one end of the separation box is fixedly connected to a water inlet pipe; the top of the water inlet pipe is fixedly connected to a slag removal bucket; a filter basket is installed on the top of the slag removal bucket; a spiral feeding rod is arranged inside the filter basket; a slag discharge pipe is fixedly connected to the top surface of the slag discharge box at the spiral feeding rod, and the end surface of the slag discharge pipe is fixedly connected to the surface of the filter basket; the end of the spiral feeding rod away from the filter basket is rotatably connected to the slag discharge pipe, and the spiral feeding rod is connected to the filter basket. The material pipe is driven by a servo motor; a slag discharge port is provided at the bottom of the slag discharge pipe away from the filter basket; a pair of baffles are fixedly connected to the bottom surface of the separation box; an oil baffle is fixedly connected to the top surface of each baffle close to the water pipe; a drain pipe is fixedly connected to the end of the inner wall of the separation box away from the water inlet pipe; during operation, in order to reduce the waste residue content in the wastewater generated by the petrochemical plant, the wastewater needs to be directly introduced into the filter basket on the top of the slag removal bucket. After the wastewater is filtered by the filter basket, the insoluble waste residue in the wastewater will remain inside the filter basket, and then The spiral feed rod inside the slag discharge pipe is driven by the servo motor to rotate, and the rotating spiral feed rod sends the waste slag in the filter basket to the slag discharge pipe, and then discharged from the slag discharge port at the end of the slag discharge pipe. The waste water filtered by the filter basket will enter the waste slag bucket, and then enter the separation box through the water inlet pipe at the bottom of the waste slag bucket. It is blocked by the baffle plate, so that the water flowing into the separation box can slowly flow to the drain pipe. In this process, the light grease in the waste water will gradually float up and be blocked by the oil baffle plate, so that the grease is located above the liquid surface of the waste water, while the drain pipe The filter basket is located below the liquid surface of the wastewater, so that the wastewater in the middle of the wastewater that does not contain grease can be discharged to the outside through the drain pipe, and the grease on the liquid surface can also be recovered and processed separately. Through the filtering of the filter basket, the insoluble waste residue in the wastewater can be filtered in advance, avoiding the waste residue from being concentrated and precipitated in the separation box, resulting in a reduction in the available volume of the separation box, and further affecting the normal use of the separation box. At the same time, the spiral feeding rod continuously sends the waste residue in the filter basket out of the filter basket, which can also ensure that the filter basket can be used continuously for a long time, thereby improving the working efficiency of the embodiment of the present invention.

[0008] Preferably, a support seat is fixedly connected to the top surface of the slag removal bucket, and the support seat is located at the end of the spiral feeding rod away from the slag discharge port; a traction plate is fixedly connected to the side of the support seat surface close to the spiral feeding rod; the bottom of the traction plate is rotatably connected to the spiral feeding rod; when the spiral feeding rod is working, both ends of the spiral feeding rod are respectively supported by the slag discharge pipe and the traction plate on one side of the support seat, so that the spiral feeding rod will not directly rest on the surface of the filter basket and the slag discharge pipe, thereby avoiding collision between the spiral feeding rod and the two, which may cause damage to the spiral feeding rod, the filter basket or the slag discharge pipe.

[0009] Preferably, a pair of symmetrically arranged connecting plates are fixedly connected to the top of the filter basket; a spring is fixedly connected between the connecting plate and the slag removal bucket; a cam is fixedly connected to the surface between the spiral feeding rod and the traction plate; during operation, when the spiral feeding rod rotates, the spiral feeding rod will also drive the cam to rotate, so that the cam continuously squeezes the filter basket, and because the connecting plates on both sides of the filter basket are connected to the slag removal bucket through springs, the filter basket will continuously vibrate under the squeezing of the cam, thereby driving the waste residue in the filter basket to vibrate, thereby reducing the probability of the waste residue getting stuck on the mesh holes of the filter basket.

[0010] Preferably, the baffle plate and the oil baffle plate divide the separation box into three chambers, and from the water inlet pipe to the water outlet pipe, the interior of the separation box is divided into an injection chamber, a separation chamber and a pre-discharge chamber in sequence; a feeding assembly is provided at a position corresponding to the injection chamber at the top of the separation box; the feeding assembly is used to feed flocculant into the injection chamber; a plurality of evenly arranged aeration pipes are fixedly connected to the inner wall of the separation chamber; a pair of scraping ports are opened on both sides of the separation box at positions corresponding to the separation chamber; a support frame is fixedly connected to the inner wall of the separation box at the top of the scraping port; a scraper is slidably connected to the interior of the support frame; the scraper is driven by a servo motor; a guide plate is fixedly connected to the outer surface of the separation box at a position corresponding to the scraping port, and the guide plate is inclined; during operation, when the filtered wastewater passes through After the water inlet pipe enters the injection chamber inside the separation box, the feeding component will inject flocculant into the wastewater in the injection chamber. After the wastewater injected with flocculant enters the separation chamber, the aeration pipe in the separation chamber will pump gas into the wastewater in the separation box to generate bubbles. After the flocs generated in the wastewater adhere to these bubbles, they float to the surface due to the reduction in density. Subsequently, the scraper inside the support frame will be driven by the servo motor to scrape the flocs above the liquid surface to the scraping port, and then the guide plate at the scraping port will guide it to the outside to facilitate the user to carry out the next step of processing. By adding flocculants, the emulsified oil in the wastewater can be effectively removed. At the same time, the scraper can also scrape away the flocs above the liquid surface, and can also ensure the long-term continuous operation of the embodiment of the present invention.

[0011] Preferably, a collecting bucket is fixedly connected to the bottom surface of the separation box at a position corresponding to the separation chamber; the collecting bucket is connected to the separation chamber; the sides of the baffles close to each other are fixedly connected to guide seats; the sides of the guide seats close to each other are inclined; a sewage pipe is fixedly connected to one side of the collecting bucket; a valve is installed in the sewage pipe, and it is connected to the inside of the collecting bucket; during operation, when some flocs are deposited inside the separation chamber due to excessive density, these flocs will be guided by the guide seat to collect in the collecting bucket and form sludge, and then the user only needs to open the sewage pipe regularly to discharge the sludge in the bottom collecting bucket through the water pressure of the separation chamber, thereby reducing the difficulty of maintenance of the embodiment of the present invention.

[0012] Preferably, the feeding assembly includes a connecting frame; both sides of the surface of the connecting frame are slidably connected with discharge pipes; the discharge pipe is connected to an external pump machine through a hose; a connecting seat is fixedly connected between the two discharge pipes; a connecting rod is fixedly connected between the scraper and the connecting seat; during operation, when the scraper moves back and forth inside the connecting frame, the scraper will also drive the connecting seat on the connecting frame to move through the connecting rod, and then the connecting seat will drive the discharge pipes on both sides thereof to move, so that the discharge pipe also slides back and forth on the connecting frame, so that the flocculant can be more evenly fed into the injection cavity, thereby improving the flocculation effect on grease in the wastewater.

[0013] Preferably, the inner wall of the injection chamber is rotatably connected to a rotating rod, and the rotating rod is located at the bottom of the water inlet pipe; a plurality of evenly arranged paddles are fixedly connected to the surface of the rotating rod; a stirring rod is rotatably connected to the inner wall of the injection chamber at the bottom of the rotating rod; transmission is transmitted between the rotating rod and the stirring rod through a transmission assembly; a plurality of evenly arranged blades are fixedly connected to the surface of the transmission rod; during operation, when wastewater enters the injection chamber from the water inlet pipe, the wastewater will first hit the paddle on the surface of the rotating rod, thereby driving the rotating rod to rotate, and the rotation will drive the stirring rod to rotate through the transmission assembly, and finally the stirring rod will drive the blades on its surface to rotate, thereby achieving stirring of the wastewater in the injection chamber, so that the wastewater can be fully mixed with the flocculant, thereby further improving the flocculation effect of the flocculant.

[0014] Preferably, the transmission mechanism includes a driving rod and a transmission rod; the driving rod and the transmission rod are respectively connected to the rotating rod and the stirring rod in turn through magnetic couplings; the driving rod and the transmission rod are driven by a belt; during operation, when the rotating rod rotates, the rotating rod will drive the driving rod to rotate through the magnetic coupling, and the driving rod will drive the transmission rod to rotate through the belt, and finally the transmission rod will drive the stirring rod to rotate through the magnetic coupling, and the transmission between the rotating rod and the stirring rod can be achieved through the driving rod and the transmission rod outside the separation box through the magnetic connecting shaft, thereby avoiding the transmission mechanism such as the belt being immersed in the wastewater inside the injection chamber for a long time, which may cause transmission failure due to corrosion.

[0015] Preferably, the inner wall of the pre-discharge chamber is fixedly connected to a filter box at the drain pipe; a pair of slide grooves are opened on the bottom surface of the filter box; a pair of support frames are slidably connected in the two slide grooves; the top surfaces of the two support frames are fixedly connected to an oil filter membrane; the same side surfaces of the two support frames and near the bottom are fixedly connected to a toothed plate, and a gap is left between the toothed plate and the surface of the support frame, and they are located outside the filter box; a gear is rotatably connected to the bottom surface of the filter box between the two toothed plates, and the gear is meshed with the two toothed plates respectively; during operation, before the waste water is discharged from the drain pipe, one of the two support frames in the filter box will be located at the bottom of the filter box, and the other will be located inside the filter box, the support frame located inside the filter box will have its bottom blocked by the slide groove where it is located, and the support frame located at the bottom of the filter box The support frame at the top will not block the chute in which it is located. At this time, waste water can enter the filter box through the oil filter membrane on the top of the support frame, and then be discharged to the outside through the drain pipe. The oil content in the waste water discharged to the outside can be further reduced by filtering the oil filter membrane. At the same time, when the oil filter membrane has been used for a long time, the user only needs to press down the other support frame located in the filter box, and the oil filter membrane used for a long time together with the support frame fixed thereto can be raised through the cooperation of the gear and the toothed plate. At this time, the user can replace the oil filter membrane, and the chute in which the pressed support frame is located is no longer blocked, and the waste water will enter the filter box through the oil filter membrane on its top and be discharged to the outside, thereby ensuring that the embodiment of the present invention can still be used normally during the replacement of the oil filter membrane.

[0016] Preferably, a sealing plate is fixedly connected to the bottom surface of the filter box and around the chute; the sealing plate is arranged in a ring shape; a pressure plate is fixedly connected to the top surface of the support frame; the pressure plate is arranged in a ring shape and is compatible with the sealing plate; magnet blocks are embedded between the sealing plate and the pressure plate, and the magnet blocks attract each other; during operation, when the support frame is pressed toward the chute, the pressure plate on the top of the support frame will press against the sealing plate around the chute, and through the magnet blocks embedded inside the two, the sealing plate and the pressure plate are adsorbed together, thereby reducing the probability of some wastewater penetrating into the interior of the filter box through the gap between the connecting frame and the chute.

[0017] The beneficial effects of the present invention are as follows: 1. The oil-water separation device for treating petrochemical wastewater described in the present invention can filter insoluble waste residues in the wastewater in advance through filtering by the filter basket, thereby preventing the waste residues from being concentrated and precipitated in the separation box, resulting in a reduction in the available volume of the separation box, thereby affecting the normal use of the separation box. At the same time, the spiral feeding rod continuously sends the waste residues in the filter basket out of the filter basket, which can also ensure that the filter basket can be used continuously for a long time, thereby improving the working efficiency of the embodiment of the present invention.

[0018] 2. The oil-water separation device for treating petrochemical wastewater described in the present invention, through the connection between the filter basket, the spring and the slag removal bucket, makes the filter basket vibrate under the continuous squeezing of the cam, thereby driving the waste residue in the filter basket to vibrate, thereby reducing the probability of the waste residue getting stuck on the mesh holes of the filter basket. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a stereogram of the present invention; Figure 2 It is a structural schematic diagram of the slag discharge pipe in the present invention; Figure 3 It is a structural schematic diagram of the slag removal bucket in the present invention; Figure 4 It is a structural schematic diagram of the spring in the present invention; Figure 5 It is a structural schematic diagram of the aeration tube in the present invention; Figure 6 It is a schematic structural diagram of the stirring rod in the present invention; Figure 7 It is a structural schematic diagram of the support frame in the present invention; Figure 8 is a partial cross-sectional view of the filter box in the present invention; Fig. 9 It is a structural schematic diagram of the sealing plate in the present invention; In the figure: 1, separation box; 2, water inlet pipe; 3, slag removal bucket; 4, filter basket; 5, spiral feeding rod; 6, slag discharge pipe; 7, slag discharge port; 8, baffle plate; 9, oil baffle plate; 10, drain pipe; 11, support seat; 12, traction plate; 13, connecting plate; 14, spring; 16, cam; 17, injection chamber; 18, separation chamber; 19, pre-discharge chamber; 20, aeration pipe; 21, scraper port; 22, support frame; 23, scraper; 24, guide To plate; 25, collecting bucket; 26, guide seat; 27, sewage pipe; 28, connecting frame; 29, discharge pipe; 30, connecting seat; 31, connecting rod; 32, rotating rod; 33, paddle plate; 34, stirring rod; 35, blade; 36, driving rod; 37, transmission rod; 38, filter box; 39, slide; 40, support frame; 41, oil filter membrane; 42, tooth plate; 43, gear; 44, sealing plate; 45, pressure plate; 46, magnet block. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] like Figure 1 to Figure 2As shown, an oil-water separation device for treating petrochemical wastewater according to an embodiment of the present invention comprises a separation box 1; one end of the separation box 1 is fixedly connected to a water inlet pipe 2; a slag removal bucket 3 is fixedly connected to the top of the water inlet pipe 2; a filter basket 4 is installed on the top of the slag removal bucket 3; a spiral feeding rod 5 is arranged inside the filter basket 4; a slag discharge pipe 6 is fixedly connected to the top surface of the slag discharge box at the spiral feeding rod 5, and the end surface of the slag discharge pipe 6 is fixedly connected to the surface of the filter basket 4; the end of the spiral feeding rod 5 away from the filter basket 4 is rotatably connected to the slag discharge pipe 6, and the spiral feeding pipe is driven by a servo motor ; A slag discharge port 7 is provided at the bottom of the slag discharge pipe 6 away from the filter basket 4; a pair of baffles 8 are fixedly connected to the bottom surface of the separation box 1; an oil baffle 9 is fixedly connected to the top surface of the separation box 1 on the side of each baffle 8 close to the water pipe; a drain pipe 10 is fixedly connected to the end of the inner wall of the separation box 1 away from the water inlet pipe 2; during operation, in order to reduce the waste residue content in the waste water generated by the petrochemical plant, it is necessary to first directly introduce the waste water into the filter basket 4 on the top of the slag removal bucket 3. After the waste water is filtered by the filter basket 4, the insoluble waste residue in the waste water will remain inside the filter basket 4, and then the waste water in the slag discharge pipe 6 will be discharged. The spiral feed rod 5 at the bottom is driven by the servo motor to rotate, and the rotating spiral feed rod 5 sends the waste residue in the filter basket 4 to the slag discharge pipe 6, and then is discharged from the slag discharge port 7 at the end of the slag discharge pipe 6, and the waste water filtered by the filter basket 4 will enter the waste residue bucket, and then enter the separation box 1 through the water inlet pipe 2 at the bottom of the waste residue bucket, and then be blocked by the baffle plate 8, so that the water flowing into the separation box 1 can slowly flow to the drain pipe 10. In this process, the light grease in the waste water will gradually float up and be blocked by the oil baffle plate 9, so that the grease is located above the liquid surface of the waste water, and the drain pipe 1 0 is located below the liquid surface of the wastewater, so that the wastewater in the middle of the wastewater that does not contain grease can be discharged to the outside through the drain pipe 10, and the grease on the liquid surface can also be recovered and processed separately. Through the filtering of the filter basket 4, the insoluble waste residue in the wastewater can be filtered in advance, avoiding the waste residue from being concentrated and precipitated in the separation box 1, resulting in a reduction in the available volume of the separation box 1, and further affecting the normal use of the separation box 1. At the same time, the spiral feeding rod 5 continuously sends the waste residue in the filter basket 4 out of the filter basket 4, which can also ensure that the filter basket 4 can be used continuously for a long time, thereby improving the working efficiency of the embodiment of the present invention.

[0023] like Figures 1 to 3As shown, the top surface of the slag removal bucket 3 is fixedly connected with a support seat 11, and the support seat 11 is located at the end of the spiral feeding rod 5 away from the slag discharge port 7; a traction plate 12 is fixedly connected to the side of the support seat 11 surface close to the spiral feeding rod 5; the bottom of the traction plate 12 is rotatably connected to the spiral feeding rod 5; when working, when the spiral feeding rod 5 is working, the two ends of the spiral feeding rod 5 are respectively supported by the slag discharge pipe 6 and the connecting plate 13 on one side of the support seat 11, so that the spiral feeding rod 5 will not directly rest on the surface of the filter basket 4 and the slag discharge pipe 6, thereby avoiding collision between the spiral feeding rod 5 and the two, which may cause damage to the spiral feeding rod 5, the filter basket 4 or the slag discharge pipe 6.

[0024] like Figures 2 to 3 As shown, a pair of symmetrically arranged connecting plates 13 are fixedly connected to the top of the filter basket 4; a spring 14 is fixedly connected between the connecting plates 13 and the slag removal bucket 3; a cam 16 is fixedly connected to the surface between the spiral feeding rod 5 and the traction plate 12; during operation, when the spiral feeding rod 5 rotates, the spiral feeding rod 5 will also drive the cam 16 to rotate, so that the cam 16 continuously squeezes the filter basket 4, and since the connecting plates 13 on both sides of the filter basket 4 are connected to the slag removal bucket 3 through the springs 14, the filter basket 4 will continuously vibrate under the squeezing of the cam 16, thereby driving the waste residue in the filter basket 4 to vibrate, thereby reducing the probability of the waste residue being stuck on the mesh of the filter basket 4.

[0025] like Figure 1 and Figure 5As shown, the baffle 8 and the oil baffle 9 divide the separation box 1 into three chambers, and from the water inlet pipe 2 to the water outlet pipe, the interior of the separation box 1 is divided into an injection chamber 17, a separation chamber 18 and a pre-discharge chamber 19 in sequence; a feeding assembly is provided at the top of the separation box 1 at a position corresponding to the injection chamber 17; the feeding assembly is used to feed flocculant into the injection chamber 17; a plurality of evenly arranged aeration pipes 20 are fixedly connected to the inner wall of the separation chamber 18; a pair of scraping openings 21 are opened on both sides of the separation box 1 at positions corresponding to the separation chamber 18; a support frame 22 is fixedly connected to the top of the scraping opening 21 on the inner wall of the separation box 1; a scraper 23 is slidably connected to the interior of the support frame 22; the scraper 23 is driven by a servo motor; a guide plate 24 is fixedly connected to the outer surface of the separation box 1 at a position corresponding to the scraping opening 21, and the guide plate 24 is inclined; when working, After the filtered wastewater enters the injection chamber 17 inside the separation box 1 through the water inlet pipe 2, the feeding component will add flocculant into the wastewater in the injection chamber 17. After the wastewater with the flocculant enters the separation chamber 18, the aeration pipe 20 in the separation chamber 18 will pump gas into the wastewater in the separation box 1 to generate bubbles. After the flocs generated in the wastewater adhere to these bubbles, they float to the surface due to the reduction in density. Then, the scraper 23 inside the support frame 22 will be driven by the servo motor to scrape the flocs above the liquid surface to the scraping port 21, and then the guide plate 24 at the scraping port 21 will guide it to the outside to facilitate the user to carry out the next step of processing. By adding the flocculant, the emulsified oil in the wastewater can be effectively removed. At the same time, the scraper 23 can also scrape away the flocs above the liquid surface, and can also ensure the long-term continuous operation of the embodiment of the present invention.

[0026] like Figure 1 and Figure 5 As shown, a collecting bucket 25 is fixedly connected to the bottom surface of the separation box 1 at a position corresponding to the separation chamber 18; the collecting bucket 25 is communicated with the separation chamber 18; the sides of the baffles 8 close to each other are fixedly connected to guide seats 26; the sides of the guide seats 26 close to each other are all inclined; a sewage pipe 27 is fixedly connected to one side of the collecting bucket 25; a valve is installed in the sewage pipe 27, and is communicated with the inside of the collecting bucket 25; during operation, when part of the flocs are deposited in the separation chamber 18 due to excessive density, these flocs will be guided by the guide seat 26 to collect in the collecting bucket 25 and form sludge, and then the user only needs to open the sewage pipe 27 regularly to discharge the sludge in the bottom collecting bucket 25 through the water pressure of the separation chamber 18, thereby reducing the difficulty of maintenance of the embodiment of the present invention.

[0027] like Figure 1 , Figure 5 and Figure 6As shown, the feeding assembly includes a connecting frame 28; discharge pipes 29 are slidably connected to both sides of the surface of the connecting frame 28; the discharge pipe 29 is connected to an external pump machine through a hose; a connecting seat 30 is fixedly connected between the two discharge pipes 29; a connecting rod 31 is fixedly connected between the scraper 23 and the connecting seat 30; during operation, when the scraper 23 moves back and forth inside the connecting frame 28, the scraper 23 will also drive the connecting seat 30 on the connecting frame 28 to move through the connecting rod 31, and then the connecting seat 30 will drive the discharge pipes 29 on both sides thereof to move, so that the discharge pipe 29 also slides back and forth on the connecting frame 28, so that the flocculant can be more evenly fed into the injection cavity 17, thereby improving the flocculation effect on grease in the wastewater.

[0028] like Figure 1 , Figure 5 and Figure 6 As shown, the inner wall of the injection chamber 17 is rotatably connected to a rotating rod 32, and the rotating rod 32 is located at the bottom of the water inlet pipe 2; a plurality of evenly arranged paddles 33 are fixedly connected to the surface of the rotating rod 32; a stirring rod 34 is rotatably connected to the inner wall of the injection chamber 17 at the bottom of the rotating rod 32; the rotating rod 32 and the stirring rod 34 are transmitted through a transmission assembly; a plurality of evenly arranged blades 35 are fixedly connected to the surface of the transmission rod 37; during operation, when wastewater enters the injection chamber 17 from the water inlet pipe 2, the wastewater will first hit the paddle 33 on the surface of the rotating rod 32, thereby driving the rotating rod 32 to rotate, and the rotation will drive the stirring rod 34 to rotate through the transmission assembly, and finally the stirring rod 34 will drive the blades 35 on its surface to rotate, thereby realizing the stirring of the wastewater in the injection chamber 17, so that the wastewater can be fully mixed with the flocculant, thereby further improving the flocculation effect of the flocculant.

[0029] like Figure 6 As shown, the transmission mechanism includes a driving rod 36 and a transmission rod 37; the driving rod 36 and the transmission rod 37 are respectively connected to the rotating rod 32 and the stirring rod 34 in turn through magnetic couplings; the driving rod 36 and the transmission rod 37 are driven by a belt; during operation, when the rotating rod 32 rotates, the rotating rod 32 will drive the driving rod 36 to rotate through the magnetic coupling, and the driving rod 36 will drive the transmission rod 37 to rotate through the belt, and finally the transmission rod 37 will drive the stirring rod 34 to rotate through the magnetic coupling, and the transmission between the rotating rod 32 and the stirring rod 34 can be achieved through the driving rod 36 and the transmission rod 37 outside the separation box 1 through the magnetic connecting shaft, thereby avoiding the transmission mechanism such as the belt being immersed in the wastewater inside the injection cavity 17 for a long time, which causes the transmission failure due to corrosion.

[0030] like Figure 1 , Figure 7 and Figure 8As shown, the inner wall of the pre-discharge chamber 19 is fixedly connected to a filter box 38 at the drain pipe 10; a pair of slide grooves 39 are opened on the bottom surface of the filter box 38; a pair of support frames 40 are slidably connected in the two slide grooves 39; the top surfaces of the two support frames 40 are fixedly connected with oil filter membranes 41; the same side surfaces of the two support frames 40 and near the bottom position are fixedly connected with toothed plates 42, and the toothed plates 42 and the surfaces of the support frames 40 leave a gap and are located outside the filter box 38; the bottom surface of the filter box 38 is rotatably connected with a gear 43 between the two toothed plates 42, and the gear 43 is meshed with the two toothed plates 42 respectively; when working, before the waste water is discharged from the drain pipe 10, one of the two support frames 40 in the filter box 38 will be located at the bottom of the filter box 38, and the other will be located inside the filter box 38. The support frame 40 located inside the filter box 38 will have its bottom blocked with the slide groove 39 where it is located, and the ... The support frame 40 at the bottom of the filter box 38 will not block the chute 39 in which it is located. At this time, the waste water can enter the filter box 38 through the oil filter membrane 41 on the top of the support frame 40, and then be discharged to the outside through the drain pipe 10. The oil content in the waste water discharged to the outside can be further reduced by filtering the oil filter membrane 41. At the same time, when the oil filter membrane 41 has been used for a long time, the user only needs to press down the other support frame 40 located in the filter box 38, and the oil filter membrane 41 used for a long time together with the support frame 40 fixed thereto can be raised through the cooperation of the gear 43 and the tooth plate 42. At this time, the user can replace the oil filter membrane 41, and the chute 39 in the depressed support frame 40 is no longer blocked, and the waste water will enter the filter box 38 through the oil filter membrane 41 on its top and be discharged to the outside, thereby ensuring that the embodiment of the present invention can still be used normally during the replacement of the oil filter membrane 41.

[0031] like Figures 7 to 9 As shown, a sealing plate 44 is fixedly connected to the bottom surface of the filter box 38 and the periphery of the chute 39; the sealing plate 44 is arranged in an annular shape; a pressing plate 45 is fixedly connected to the top surface of the support frame 40; the pressing plate 45 is arranged in an annular shape and is adapted to the sealing plate 44; magnet blocks 46 are embedded between the sealing plate 44 and the pressing plate 45, and the magnet blocks 46 attract each other; during operation, when the support frame 40 is pressed toward the chute 39, the pressing plate 45 on the top of the support frame 40 will press toward the sealing plate 44 around the chute 39, and through the magnet blocks 46 embedded inside the two, the sealing plate 44 and the pressing plate 45 are adsorbed together, thereby reducing the probability of part of the wastewater penetrating into the interior of the filter box 38 through the gap between the connecting frame and the chute 39.

[0032] During operation, in order to reduce the waste residue content in the waste water generated by the petrochemical plant, the waste water needs to be directly introduced into the filter basket 4 on the top of the slag removal bucket 3. After the waste water is filtered by the filter basket 4, the insoluble waste residue in the waste water will remain inside the filter basket 4, and then the spiral feeding rod 5 inside the slag discharge pipe 6 is driven by the servo motor to rotate, and the rotating spiral feeding rod 5 sends the waste residue in the filter basket 4 to the slag discharge pipe 6, and then discharged from the slag discharge port 7 at the end of the slag discharge pipe 6, and the waste water filtered by the filter basket 4 will enter the slag bucket, and then enter the separation box 1 through the water inlet pipe 2 at the bottom of the slag bucket, and then be blocked by the baffle plate 8, so that the waste water flowing into the separation box 1 can slowly flow to the drain pipe 10. In this process The light grease in the wastewater will gradually float up and be blocked by the oil baffle plate 9, so that the grease is located above the liquid surface of the wastewater, while the drain pipe 10 is located below the liquid surface of the wastewater. Therefore, the wastewater in the middle of the wastewater that does not contain grease can be discharged to the outside through the drain pipe 10, and the grease on the liquid surface can also be recovered and processed separately. Through the filtration of the filter basket 4, the insoluble waste residue in the wastewater can be filtered in advance, avoiding the waste residue from being concentrated and precipitated in the separation box 1, resulting in a reduction in the available volume of the separation box 1, and further affecting the normal use of the separation box 1. At the same time, the spiral feeding rod 5 continuously sends the waste residue in the filter basket 4 out of the filter basket 4, which can also ensure that the filter basket 4 can be used continuously for a long time, thereby improving the working efficiency of the embodiment of the present invention.

[0033] When the spiral feeding rod 5 is working, both ends of the spiral feeding rod 5 are supported by the slag discharge pipe 6 and the traction plate 12 on one side of the support seat 11, so that the spiral feeding rod 5 will not directly rest on the surface of the filter basket 4 and the slag discharge pipe 6, thereby avoiding collision between the spiral feeding rod 5 and the two, which may cause damage to the spiral feeding rod 5, the filter basket 4 or the slag discharge pipe 6.

[0034] When the spiral feeding rod 5 rotates, the spiral feeding rod 5 will also drive the cam 16 to rotate, so that the cam 16 continuously squeezes the filter basket 4. Since the traction plates 12 on both sides of the filter basket 4 are connected to the slag removal bucket 3 through the springs 14, the filter basket 4 will continuously vibrate under the squeezing of the cam 16, thereby driving the waste residue in the filter basket 4 to vibrate, thereby reducing the probability of the waste residue getting stuck on the mesh of the filter basket 4.

[0035] When the filtered wastewater enters the injection chamber 17 inside the separation box 1 through the water inlet pipe 2, the feeding component will add flocculant into the wastewater in the injection chamber 17. After the wastewater with the flocculant enters the separation chamber 18, the aeration pipe 20 in the separation chamber 18 will pump gas into the wastewater in the separation box 1 to generate bubbles. After the flocs generated in the wastewater adhere to these bubbles, they float to the surface due to the reduction in density. Then, the scraper 23 inside the support frame 22 will be driven by the servo motor to scrape the flocs above the liquid surface to the scraping port 21, and then the guide plate 24 at the scraping port 21 will guide it to the outside to facilitate the user to carry out the next step of processing. By adding the flocculant, the emulsified oil in the wastewater can be effectively removed. At the same time, the scraper 23 can also scrape away the flocs above the liquid surface, and can also ensure the long-term continuous operation of the embodiment of the present invention.

[0036] When some flocs are deposited inside the separation chamber 18 due to their excessive density, these flocs will be guided by the guide seat 26 to gather in the collecting bucket 25 and form sludge. After that, the user only needs to open the drain pipe 27 regularly to discharge the sludge in the bottom collecting bucket 25 through the water pressure of the separation chamber 18, thereby reducing the difficulty of maintenance of the embodiment of the present invention.

[0037] When the scraper 23 moves back and forth inside the connecting frame 28, the scraper 23 will also drive the connecting seat 30 on the connecting frame 28 to move through the connecting rod 31, and then the connecting seat 30 will drive the discharge pipes 29 on both sides thereof to move, so that the discharge pipes 29 also slide back and forth on the connecting frame 28, so that the flocculant can be more evenly injected into the injection cavity 17, thereby improving the flocculation effect on grease in the wastewater.

[0038] When wastewater enters the injection chamber 17 from the water inlet pipe 2, the wastewater will first hit the paddle 33 on the surface of the rotating rod 32, thereby driving the rotating rod 32 to rotate, and the rotation will drive the stirring rod 34 to rotate through the transmission assembly, and finally the stirring rod 34 will drive the blades 35 on its surface to rotate, thereby achieving stirring of the wastewater in the injection chamber 17, so that the wastewater can be fully mixed with the flocculant, thereby further improving the flocculation effect of the flocculant.

[0039] When the rotating rod 32 rotates, the rotating rod 32 will drive the driving rod 36 to rotate through the magnetic coupling, and the driving rod 36 will drive the transmission rod 37 to rotate through the belt, and finally the transmission rod 37 will drive the stirring rod 34 to rotate through the magnetic coupling. The transmission between the rotating rod 32 and the stirring rod 34 can be achieved through the driving rod 36 and the transmission rod 37 outside the separation box 1 through the magnetic connecting shaft, thereby avoiding the transmission mechanism such as the belt being immersed in the wastewater inside the injection chamber 17 for a long time, causing it to fail due to corrosion.

[0040] Before the wastewater is discharged from the drain pipe 10, one of the two support frames 40 in the filter box 38 will be located at the bottom of the filter box 38, and the other will be located inside the filter box 38. The support frame 40 located inside the filter box 38 will have its bottom blocked with the chute 39 where it is located, while the support frame 40 located at the bottom of the filter box 38 will not block the chute 39 where it is located. At this time, the wastewater can enter the filter box 38 through the oil filter membrane 41 on the top of the support frame 40, and then be discharged to the outside from the drain pipe 10. The filtration of the oil filter membrane 41 can further reduce the amount of oil in the wastewater discharged to the outside. At the same time, when the oil filter membrane 41 has been used for a long time, the user only needs to press down the other support frame 40 located in the filter box 38, and the oil filter membrane 41 that has been used for a long time together with the support frame 40 fixed thereto can be lifted up through the cooperation of the gear 43 and the tooth plate 42. At this time, the user can replace the oil filter membrane 41, and the chute 39 of the pressed support frame 40 is no longer blocked, and the waste water will enter the filter box 38 through the oil filter membrane 41 on its top and be discharged to the outside, thereby ensuring that the embodiment of the present invention can still be used normally during the replacement of the oil filter membrane 41.

[0041] When the support frame 40 is pressed toward the chute 39, the pressure plate 45 on the top of the support frame 40 will press against the sealing plate 44 around the chute 39, and through the embedded magnet blocks 46 inside the two, the sealing plate 44 and the pressure plate 45 are adsorbed together, thereby reducing the probability of some wastewater penetrating into the filter box 38 through the gap between the connecting frame and the chute 39.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A petrochemical wastewater treatment oil-water separation device, characterized in that: The invention comprises a separation box (1); one end of the separation box (1) is fixedly connected to a water inlet pipe (2); a slag removal bucket (3) is fixedly connected to the top of the water inlet pipe (2); a filter basket (4) is installed on the top of the slag removal bucket (3); a spiral feeding rod (5) is arranged inside the filter basket (4); a slag discharge pipe (6) is fixedly connected to the top surface of the slag removal box at the spiral feeding rod (5), and the end surface of the slag discharge pipe (6) is fixedly connected to the surface of the filter basket (4); the spiral feeding rod (5) is away from the filter basket (4). One end of the filter basket (4) is rotatably connected to a slag discharge pipe (6), and the spiral feed pipe is driven by a servo motor; a slag discharge port (7) is provided at the bottom of the slag discharge pipe (6) on a side away from the filter basket (4); a pair of baffles (8) are fixedly connected to the bottom surface of the separation box (1); an oil baffle (9) is fixedly connected to the top surface of each baffle (8) on a side close to the water pipe; and a drainage pipe (10) is fixedly connected to the inner wall of the separation box (1) on one end away from the water inlet pipe (2).

2. The oil-water separation device for treating petrochemical wastewater according to claim 1, characterized in that: A support seat (11) is fixedly connected to the top surface of the slag removal bucket (3), and the support seat (11) is located at the end of the spiral feed rod (5) away from the slag discharge port (7); a traction plate (12) is fixedly connected to the side of the surface of the support seat (11) close to the spiral feed rod (5); and the bottom of the traction plate (12) is rotatably connected to the spiral feed rod (5).

3. The oil-water separation device for treating petrochemical wastewater according to claim 2, characterized in that: A pair of symmetrically arranged connecting plates (13) are fixedly connected to the top of the filter basket (4); a spring (14) is fixedly connected between the connecting plates (13) and the slag removal bucket (3); and a cam (16) is fixedly connected to the surface between the spiral feeding rod (5) and the traction plate (12).

4. The oil-water separation device for treating petrochemical wastewater according to claim 1, characterized in that: The baffle plate (8) and the oil baffle plate (9) divide the separation box (1) into three chambers, and from the water inlet pipe (2) to the water outlet pipe, the interior of the separation box (1) is divided into an injection chamber (17), a separation chamber (18) and a pre-discharge chamber (19) in sequence; a feeding assembly is provided at a position corresponding to the injection chamber (17) at the top of the separation box (1); the feeding assembly is used to feed flocculants into the injection chamber (17); a plurality of evenly arranged aeration pipes (20) are fixedly connected to the inner wall of the separation chamber (18); A pair of scraping openings (21) are provided on both sides of the separation box (1) at positions corresponding to the separation chamber (18); a support frame (22) is fixedly connected to the inner wall of the separation box (1) at the top of the scraping opening (21); a scraper (23) is slidably connected to the interior of the support frame (22); the scraper (23) is driven by a servo motor; a guide plate (24) is fixedly connected to the outer surface of the separation box (1) at positions corresponding to the scraping opening (21), and the guide plate (24) is arranged in an inclined manner.

5. The oil-water separation device for treating petrochemical wastewater according to claim 4, characterized in that: A collecting bucket (25) is fixedly connected to the bottom surface of the separation box (1) at a position corresponding to the separation chamber (18); the collecting bucket (25) is in communication with the separation chamber (18); the sides of the baffles (8) close to each other are fixedly connected to guide seats (26); the sides of the guide seats (26) close to each other are inclined; a sewage pipe (27) is fixedly connected to one side of the collecting bucket (25); a valve is installed in the sewage pipe (27) and is in communication with the interior of the collecting bucket (25).

6. The oil-water separation device for treating petrochemical wastewater according to claim 5, characterized in that: The feeding assembly comprises a connecting frame (28); discharge pipes (29) are slidably connected to both sides of the surface of the connecting frame (28); the discharge pipes (29) are connected to an external pumping machine via a hose; a connecting seat (30) is fixedly connected between the two discharge pipes (29); and a connecting rod (31) is fixedly connected between the scraper (23) and the connecting seat (30).

7. The oil-water separation device for treating petrochemical wastewater according to claim 6, characterized in that: The inner wall of the injection chamber (17) is rotatably connected to a rotating rod (32), and the rotating rod (32) is located at the bottom of the water inlet pipe (2); a plurality of evenly arranged paddles (33) are fixedly connected to the surface of the rotating rod (32); a stirring rod (34) is rotatably connected to the inner wall of the injection chamber (17) at the bottom of the rotating rod (32); transmission is transmitted between the rotating rod (32) and the stirring rod (34) via a transmission assembly; and a plurality of evenly arranged blades (35) are fixedly connected to the surface of the transmission rod (37).

8. The oil-water separation device for treating petrochemical wastewater according to claim 7, characterized in that: The transmission mechanism comprises a driving rod (36) and a transmission rod (37); the driving rod (36) and the transmission rod (37) are respectively connected to the rotating rod (32) and the stirring rod (34) in sequence through magnetic couplings; and the driving rod (36) and the transmission rod (37) are driven by a belt.

9. The oil-water separation device for treating petrochemical wastewater according to claim 4, characterized in that: The inner wall of the pre-drainage chamber (19) is fixedly connected to a filter box (38) at the drainage pipe (10); a pair of slide grooves (39) are provided on the bottom surface of the filter box (38); a pair of support frames (40) are slidably connected in the two slide grooves (39); the top surfaces of the two support frames (40) are fixedly connected to an oil filter membrane (41); tooth plates (42) are fixedly connected to the same side surfaces of the two support frames (40) and near the bottom, and a gap is left between the tooth plates (42) and the surface of the support frames (40), and are located outside the filter box (38); a gear (43) is rotatably connected to the bottom surface of the filter box (38) between the two tooth plates (42), and the gear (43) is respectively meshed with the two tooth plates (42).

10. The oil-water separation device for treating petrochemical wastewater according to claim 9, characterized in that: A sealing plate (44) is fixedly connected to the bottom surface of the filter box (38) and the periphery of the slide groove (39); the sealing plate (44) is arranged in a ring shape; a pressing plate (45) is fixedly connected to the top surface of the support frame (40); the pressing plate (45) is arranged in a ring shape and is compatible with the sealing plate (44); magnet blocks (46) are embedded between the sealing plate (44) and the pressing plate (45), and the magnet blocks (46) attract each other.

Images