Plant oil Chinese honeylocust fruit acidification sewage treatment device

Abstract

The invention relates to the technical field of building material crushing and screening equipment, and discloses a plant oil saponin acidification sewage treatment device which comprises a sewage treatment box, a water inlet is formed in the upper end of the sewage treatment box, an oil removal component, an acid removal component and a sludge discharge assembly are arranged in an inner cavity of the sewage treatment box, a water drainage pipe is arranged on one side of the bottom of the sewage treatment box, and a filter screen is arranged in the water drainage pipe. The oil removal component comprises a receiving hopper, a water guide pipe, two rotating rollers, an oil absorption felt and a control component for driving the rotating roller on one side and the water guide pipe to rotate at the same time, the receiving hopper is arranged in the water inlet, the water guide pipe is rotationally arranged at the bottom of the receiving hopper, and the two rotating rollers are symmetrically arranged on the two sides of the sewage treatment box left and right; and the oil absorption felt is arranged between the two rotating rollers. The invention has the following advantages and effects: oil stains, acidic substances and generated sludge in the acidic sewage can be effectively treated, and the sewage treatment is more ideal.

Description

Technical Field

[0001] The invention relates to the technical field of vegetable oil wastewater treatment equipment, and in particular to a vegetable oil saponin acidified wastewater treatment device. Background Art

[0002] Acidified oil refers to the oil obtained by acidifying the soap stock, a by-product produced by the oil refinery. The acidified oil is essentially fatty acids, which contain pigments and various components such as unacidified triglycerides, diglycerides and monoglycerides (neutral oils). During the production process of soap stock acidified oil, the soap stock often needs to be placed in a reaction tank.

[0003] In the prior art, when treating the wastewater generated in the production of vegetable oil, it is often only through simple filtration and neutralization reaction to remove impurities and acids in the wastewater, and the internal oil pollution cannot be treated, resulting in that the oil pollution still causes great pollution to the environment when discharged, and the acidic substances in the wastewater are not treated thoroughly. After the neutralization reaction, the mud residue generated is discharged together with the wastewater, which will also have a great impact on the environment, resulting in the acidified wastewater treatment effect is not ideal. Therefore, it is necessary to propose a vegetable oil saponin acidified wastewater treatment device to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a plant oil saponin acidified sewage treatment device, which can effectively treat the oil pollution, acidic substances and generated mud residues in the acidic sewage, and achieve a more ideal sewage treatment effect.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a plant oil saponin acidified sewage treatment device, comprising a sewage treatment tank, the upper end of the sewage treatment tank is provided with a water inlet, the inner cavity is provided with an oil removal component, an acid removal component and a mud discharge component, a drainage pipe is provided on one side of the bottom, a filter is provided in the drainage pipe, the oil removal component comprises a hopper, a water guide pipe, two rollers, an oil-absorbing felt, and a control component for driving one side of the roller and the water guide pipe to rotate simultaneously, the hopper is provided in the water inlet, the water guide pipe is rotatably provided at the bottom of the hopper, and the two rollers are symmetrically provided on both sides of the sewage treatment tank. The oil-absorbing felt is arranged between two rollers, and the control component includes a first motor installed on the right side of the sewage treatment tank, a worm is installed at the output end of the first motor, a worm wheel adapted to the worm is installed at the top of the outer end of the water guide pipe, and a main bevel gear is installed at the other end of the worm. A connecting rod is rotatably arranged on the left side wall of the sewage treatment tank, one end of the connecting rod is equipped with a slave bevel gear adapted to the main bevel gear, and the other end is equipped with a first synchronous belt structure connected to the left end roller, a plurality of drainage outlets are equidistantly arranged at the lower end of the water guide pipe, and an oil scraping component for removing oil from the surface of the oil-absorbing felt is also arranged on the left side wall of the sewage treatment tank.

[0006] By adopting the above technical scheme, sewage is introduced into the sewage treatment tank through the water inlet, the grease in the sewage is cleaned by the oil removal component, and the acid in the sewage is neutralized by the acid removal component. The mud residue produced can be processed by the mud discharge component, so that the sewage is layered and cleaned, and then discharged through the drain pipe and the drain port. The filter screen arranged in the drain pipe can avoid the discharge of mud residue during the drainage process, so that the discharged wastewater is more environmentally friendly. The specific oil removal method is that when the sewage enters the receiving hopper, the worm is driven by the first motor to rotate, and the worm wheel is driven to rotate, so that the water guide pipe rotates. When the sewage is discharged from the water guide pipe, it can pass through the oil-absorbing felt evenly. The rotation of the worm drives the main bevel gear to rotate, and drives the rotation of the slave bevel gear, and drives the roller on one side to rotate through the first synchronous belt structure, and continuously reels the oil-absorbing felt, so that the oil-absorbing felt can better absorb the oil in the sewage thoroughly, and at the same time, the oil on the surface of the oil-absorbing felt is scraped and processed by the oil scraping component.

[0007] The present invention is further configured as follows: a filter screen plate is provided in the water inlet, and openings for rolling up the oil-absorbing felt are provided on both left and right sides of the sewage treatment box.

[0008] By adopting the above technical solution, the setting of the filter screen plate can preliminarily filter the sewage entering the water inlet and filter out impurities with a certain volume.

[0009] The present invention is further configured as follows: the oil scraping component comprises a rotating shaft arranged on the left side wall of the sewage treatment tank and an oil scraping plate connected to the rotating shaft, and the upper end of the oil scraping plate is close to the surface of the rotating roller.

[0010] By adopting the above technical solution, when the left end roller rotates and reels the oil-absorbing felt, the oil scraper plate scrapes off the oil stains on the surface of the oil-absorbing felt for cleaning.

[0011] The present invention is further configured as follows: torsion springs are provided at both ends of the rotating shaft, and an oil guide groove is provided at the bottom of the oil scraper plate.

[0012] By adopting the above technical solution, under the torsion rotation of the torsion spring, the upper end of the oil scraper plate always fits the surface of the oil absorbing felt, so that the oil can be scraped off better, and the setting of the oil guide groove guides and processes the oil.

[0013] The present invention is further configured as follows: the acid removal component includes three lime barrels and a stirring rod rotatably arranged in a sewage treatment tank, the outer wall of the lime barrel is provided with a plurality of groups of through holes, the outer wall of the stirring rod is provided with stirring blades, the outer wall of the lime barrel is provided with a scraper structure, and the left side wall of the sewage treatment tank is provided with a driving part for driving the three lime barrels and the stirring rod and the scraper structure to operate.

[0014] By adopting the above technical solution, after the acidic sewage enters the bottom of the sewage treatment tank, it undergoes a neutralization reaction with the lime in the lime barrel. At the same time, the driving member controls the stirring blades and the three lime barrels to rotate, so that the acid can be removed more quickly and thoroughly. The scraper structure can scrape off the generated sludge and send it to the sludge discharge component for treatment, so that the sewage treatment effect is better.

[0015] The present invention is further configured as follows: the driving member includes a second motor installed on the left side wall of the sewage treatment tank, the output end of the second motor is connected to the end of the stirring rod, a main gear is installed at the left end of the lime barrel at the top, and sub-gears meshing with the main gear are installed at the left ends of the two lime barrels at the bottom, and a second synchronous belt structure is provided between the stirring rod and the left end of the lime barrel at the top.

[0016] By adopting the above technical solution, the second motor drives the stirring rod to rotate, thereby driving the stirring blade to rotate. At the same time, the second synchronous belt structure drives the upper lime drum and the main gear to rotate as a whole. The meshing drives the sub-gears on both sides to rotate, which can drive the three lime drums to rotate, so that the acid in the sewage can be better neutralized.

[0017] The present invention is further configured as follows: the scraper structure includes a reciprocating screw and a guide rod arranged at the bottom of the inner cavity of the sewage treatment tank, the external thread of the reciprocating screw is provided with a movable frame slidably adapted to the guide rod, the outer side of the movable frame is provided with a scraper plate close to the inner wall of the sewage treatment tank, and the inner side is provided with a cleaning cylinder close to the outer wall of the lime cylinder, the left end of the reciprocating screw extends to the outside of the sewage treatment tank and a third synchronous belt structure is provided between the end of the stirring rod.

[0018] By adopting the above technical solution, the reciprocating screw is driven to rotate by the third synchronous belt structure while the stirring rod rotates, and the movable frame slides left and right under the sliding guidance of the guide rod, and the mud residue on the surface of the lime cylinder is cleaned by the cleaning cylinder. At the same time, the scraper plate can clean the mud residue attached to the inner wall of the sewage treatment tank and push the mud residue to the mud discharge assembly for treatment.

[0019] The present invention is further configured as follows: cover plates are provided at both left and right ports of the lime cylinder, and mounting bolts are provided on the cover plates.

[0020] By adopting the above technical solution, the cover plates at both ends can be removed by dismantling the mounting bolts, thereby making it convenient to fill lime into the lime cylinder and facilitating the use of the equipment.

[0021] The present invention is further configured as follows: the mud discharge assembly includes a mud inlet bin arranged at the right bottom of the sewage treatment tank, a mud elevator is arranged on the mud inlet bin, and a mud discharge port is arranged on the right side of the top of the mud elevator.

[0022] By adopting the above technical solution, when the sludge is pushed into the sludge inlet bin, the sludge is lifted by the sludge elevator and discharged through the sludge discharge port, so that the sewage treatment effect is better.

[0023] The present invention is further configured as follows: the bottom surface of the inner cavity of the mud inlet bin is tilted downward from left to right, and the outer wall of the mud elevator located inside the mud inlet bin is provided with a plurality of water outlet holes.

[0024] By adopting the above technical solution, the sludge can enter the sludge elevator more conveniently. During the lifting process, the sewage is discharged from the water outlet, thereby making it more convenient to handle the sludge.

[0025] The beneficial effects of the present invention are:

[0026] 1. In the present invention, when sewage enters the receiving hopper, the first motor drives the worm to rotate, which drives the worm wheel to rotate, so that the water pipe rotates. When the sewage is discharged from the water pipe, it can evenly pass through the oil-absorbing felt. The rotation of the worm drives the main bevel gear to rotate, which drives the slave bevel gear to rotate, and drives the roller on one side to rotate through the first synchronous belt structure, so that the oil-absorbing felt is continuously wound up, so that the oil-absorbing felt can better absorb the oil in the sewage thoroughly. At the same time, the oil on the surface of the oil-absorbing felt is scraped off and processed by the oil scraping component. When the sewage is discharged, there will be no problem of oil pollution to the environment, thereby improving its environmental protection.

[0027] 2. In the present invention, after the acidic sewage enters the bottom of the sewage treatment tank, it undergoes a neutralization reaction with the lime in the lime barrel. The second motor drives the stirring rod to rotate, thereby driving the stirring blade to rotate. At the same time, the second synchronous belt structure drives the upper lime barrel and the main gear to rotate as a whole. The meshing drives the auxiliary gears on both sides to rotate, which can drive the three lime barrels to rotate, so that the acid in the sewage can be better neutralized, further improving the treatment effect of the acidified sewage.

[0028] 3. In the process of treating acidic substances, the present invention drives the reciprocating screw to rotate through the third synchronous belt structure, and the movable frame slides left and right under the sliding guidance of the guide rod, and the mud residue on the surface of the lime cylinder is cleaned by the cleaning cylinder. At the same time, the scraper plate can clean the mud residue attached to the inner wall of the sewage treatment box, and push the mud residue into the mud inlet bin, lift the mud residue through the sludge elevator, and discharge it through the mud discharge port, so that the sewage treatment effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 It is an overall structural diagram of a plant oil saponin acidified wastewater treatment device of the present invention.

[0031] Figure 2 The present invention Figure 1 Left side view.

[0032] Figure 3 The present invention Figure 1 Diagram of the internal structure of the sewage treatment tank.

[0033] Figure 4 The present invention Figure 3 The overall structure diagram of the oil removal components.

[0034] Figure 5 The present invention Figure 4 Structural diagram of the middle oil scraper.

[0035] Figure 6 The present invention Figure 3 Structural diagram of the acid removal components.

[0036] Figure 7 The present invention Figure 6 Right side view.

[0037] Figure 8 The present invention Figure 7 Installation structure diagram of the middle cover.

[0038] Fig. 9 The present invention Figure 3 The overall structure diagram of the middle mud discharge assembly.

[0039] In the figure, 1, sewage treatment tank; 2, water inlet; 3, oil removal component; 31, receiving hopper; 32, water guide pipe; 33, roller; 34, oil absorption felt; 35, first motor; 36, worm; 37, worm wheel; 38, main bevel gear; 39, connecting rod; 310, slave bevel gear; 311, first synchronous belt structure; 312, drain outlet; 313, filter screen plate; 314, rotating shaft; 315, oil scraper; 316, torsion spring; 317, oil guide groove; 4, acid removal component; 4 1. Lime cylinder; 42. Stirring rod; 43. Stirring blade; 44. Second motor; 45. Main gear; 46. Sub gear; 47. Second synchronous belt structure; 48. Reciprocating screw rod; 49. Guide rod; 410. Moving frame; 411. Scraper plate; 412. Cleaning cylinder; 413. Third synchronous belt structure; 414. Cover plate; 415. Mounting bolts; 5. Mud discharge assembly; 51. Mud inlet bin; 52. Sludge elevator; 53. Mud discharge port; 54. Water outlet; 6. Drain pipe. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a plant oil saponin acidified sewage treatment device comprises a sewage treatment tank 1, wherein the upper end of the sewage treatment tank 1 is provided with a water inlet 2, the inner cavity is provided with an oil removal component 3, an acid removal component 4 and a mud discharge component 5, a drainage pipe 6 is provided on one side of the bottom, a filter screen is provided in the drainage pipe 6, the oil removal component 3 comprises a hopper 31, a water guide pipe 32, two rollers 33, an oil absorption felt 34, and a control component for driving one side of the roller 33 and the water guide pipe 32 to rotate simultaneously, the hopper 31 is provided in the water inlet 2, the water guide pipe 32 is rotatably provided at the bottom of the hopper 31, the two rollers 33 are symmetrically provided on both sides of the sewage treatment tank 1, and the oil absorption felt 34 is provided on the two rollers 3 3, the control component includes a first motor 35 installed on the right side of the sewage treatment tank 1, a worm 36 is installed at the output end of the first motor 35, a worm wheel 37 adapted to the worm 36 is installed at the top of the outer end of the water pipe 32, and a main bevel gear 38 is installed at the other end of the worm 36. A connecting rod 39 is rotatably provided on the left side wall of the sewage treatment tank 1, one end of the connecting rod 39 is provided with a slave bevel gear 310 adapted to the main bevel gear 38, and the other end is provided with a first synchronous belt structure 311 connected to the left end roller 33, a plurality of drain outlets 312 are equidistantly arranged at the lower end of the water pipe 32, and an oil scraping component for removing oil stains on the surface of the oil-absorbing felt 34 is also provided on the left side wall of the sewage treatment tank 1.

[0042] The sewage is introduced into the sewage treatment tank 1 through the water inlet 2, the grease in the sewage is cleaned by the oil removal component 3, and the acid in the sewage is neutralized by the acid removal component 4. The mud residue produced can be processed by the mud discharge component 5, so that the sewage is layered and cleaned, and then discharged through the drain pipe 6 and the drain port 312. The filter screen arranged in the drain pipe 6 can avoid the discharge of mud residue during the drainage process, so that the discharged wastewater is more environmentally friendly. The specific oil removal method is that when the sewage enters the receiving hopper 31, the first electric The machine 35 drives the worm 36 to rotate, which pushes the worm wheel 37 to rotate, so that the water pipe 32 rotates. When the sewage is discharged from the water pipe 32, it can evenly pass through the oil-absorbing felt 34. The rotation of the worm 36 drives the main bevel gear 38 to rotate, which pushes the slave bevel gear 310 to rotate, and drives the roller 33 on one side to rotate through the first synchronous belt structure 311, and continuously reels the oil-absorbing felt 34, so that the oil-absorbing felt 34 can better absorb the oil in the sewage thoroughly, and at the same time, the oil on the surface of the oil-absorbing felt 34 is scraped off and processed by the oil scraping component.

[0043] like Figure 4 , Figure 5 As shown, a filter screen plate 313 is provided in the water inlet 2, and openings for rolling up the oil-absorbing felt 34 are provided on the left and right sides of the sewage treatment tank 1. The oil scraping component includes a rotating shaft 314 provided on the left side wall of the sewage treatment tank 1 and an oil scraping plate 315 connected to the rotating shaft 314. The upper end of the oil scraping plate 315 is close to the surface of the roller 33, and torsion springs 316 are provided at both ends of the rotating shaft 314. An oil guide groove 317 is provided at the bottom of the oil scraping plate 315.

[0044] The setting of the filter screen plate 313 can perform preliminary filtration on the sewage entering the water inlet 2 and filter out impurities of a certain volume. When the left end roller 33 rotates and reels up the oil-absorbing felt 34, the scraper plate 315 scrapes off the oil on the surface of the oil-absorbing felt 34 for cleaning. Under the torsion rotation of the torsion spring 316, the upper end of the scraper plate 315 always adheres to the surface of the oil-absorbing felt 34, which can better scrape off the oil. The setting of the oil guide groove 317 guides and treats the oil.

[0045] like Figure 6 , Figure 7 , Figure 8As shown, the acid removal component 4 includes three lime barrels 41 and a stirring rod 42 rotatably arranged in the sewage treatment tank 1, the outer wall of the lime barrel 41 is provided with multiple groups of through holes, the outer wall of the stirring rod 42 is provided with a stirring blade 43, the outer wall of the lime barrel 41 is provided with a scraper structure, and the left side wall of the sewage treatment tank 1 is provided with a driving member for driving the three lime barrels 41 and the stirring rod 42 and the scraper structure to operate, the driving member includes a second motor 44 installed on the left side wall of the sewage treatment tank 1, the output end of the second motor 44 is connected to the end of the stirring rod 42, a main gear 45 is installed at the left end of the top lime barrel 41, and the left ends of the two bottom lime barrels 41 are both provided with sub-gears 46 meshing with the main gear 45, and a second synchronous belt structure 47 is provided between the stirring rod 42 and the left end of the top lime barrel 41.

[0046] After the acidic sewage enters the bottom of the sewage treatment tank 1, it reacts with the lime in the lime barrel 41 to neutralize. At the same time, the driving member controls the stirring blade 43 and the three lime barrels 41 to rotate, so that the acid can be removed more quickly and thoroughly. The scraper structure can scrape off the generated mud and send it to the mud discharge component 5 for treatment, so that the sewage treatment effect is better. The second motor 44 drives the stirring rod 42 to rotate, thereby driving the stirring blade 43 to rotate. At the same time, the second synchronous belt structure 47 drives the upper lime barrel 41 and the main gear 45 to rotate as a whole. The meshing drives the sub-gears 46 on both sides to rotate, which can drive the three lime barrels 41 to rotate, so that the acid in the sewage can be better neutralized.

[0047] like Figure 6 , Figure 7 As shown, the scraper structure includes a reciprocating screw 48 and a guide rod 49 arranged at the bottom of the inner cavity of the sewage treatment tank 1, the external thread of the reciprocating screw 48 is provided with a moving frame 410 slidably adapted to the guide rod 49, the outer side of the moving frame 410 is provided with a scraper plate 411 close to the inner wall of the sewage treatment tank 1, and the inner side is provided with a cleaning cylinder 412 close to the outer wall of the lime cylinder 41, the left end of the reciprocating screw 48 extends to the outside of the sewage treatment tank 1 and a third synchronous belt structure 413 is provided between the end of the stirring rod 42, and the left and right ports of the lime cylinder 41 are provided with cover plates 414, and the cover plates 414 are provided with mounting bolts 415.

[0048] While the stirring rod 42 rotates, the reciprocating screw rod 413 is driven to rotate by the third synchronous belt structure 413, and the movable frame 410 slides left and right under the sliding guidance of the guide rod 49, and the mud residue on the surface of the lime cylinder 41 is cleaned by the cleaning cylinder 412. At the same time, the scraper plate 411 can clean the mud residue attached to the inner wall of the sewage treatment tank 1, and push the mud residue to the mud discharge assembly 5 for treatment. The cover plates 414 at both ends can be removed by disassembling the mounting bolts 415, so as to facilitate the filling of lime into the lime cylinder 41 and facilitate the use of the equipment.

[0049] like Fig. 9 As shown, the mud discharge assembly 5 includes a mud inlet bin 51 arranged at the right bottom of the sewage treatment tank 1, a mud elevator 52 is arranged on the mud inlet bin 51, a mud discharge port 53 is arranged on the right side of the top of the mud elevator 52, the bottom surface of the inner cavity of the mud inlet bin 51 is inclined downward from left to right, and the outer wall of the mud elevator 52 located inside the mud inlet bin 51 is provided with a plurality of water outlet holes 54.

[0050] When the sludge is pushed into the sludge inlet bin 51, the sludge is lifted by the sludge elevator 52 and discharged through the sludge discharge port 53, so that the sewage treatment effect is better and the sludge can enter the sludge elevator 52 more conveniently. During the lifting process, the sewage is discharged from the water outlet 54, thereby making it more convenient to treat the sludge.

Claims

1. A plant oil saponin acidified wastewater treatment device, comprising a wastewater treatment tank (1), characterized in that: The sewage treatment tank (1) is provided with a water inlet (2) at the upper end, an oil removal component (3), an acid removal component (4) and a mud discharge component (5) in the inner cavity, a drainage pipe (6) is provided on one side of the bottom, a filter screen is provided in the drainage pipe (6), the oil removal component (3) comprises a receiving hopper (31), a water guide pipe (32), two rollers (33), an oil-absorbing felt (34), and a control component for driving one side roller (33) and the water guide pipe (32) to rotate simultaneously, the receiving hopper (31) is arranged in the water inlet (2), the water guide pipe (32) is rotatably arranged at the bottom of the receiving hopper (31), the two rollers (33) are symmetrically arranged on both sides of the sewage treatment tank (1), the oil-absorbing felt (34) is arranged between the two rollers (33), and the control component comprises A first motor (35) is installed on the right side of the sewage treatment tank (1), a worm (36) is installed at the output end of the first motor (35), a worm wheel (37) adapted to the worm (36) is installed at the top of the outer end of the water guide pipe (32), a main bevel gear (38) is installed at the other end of the worm (36), a connecting rod (39) is rotatably arranged on the left side wall of the sewage treatment tank (1), one end of the connecting rod (39) is installed with a slave bevel gear (310) adapted to the main bevel gear (38), and the other end is installed with a first synchronous belt structure (311) connected to the left end roller (33), a plurality of drainage ports (312) are equidistantly arranged at the lower end of the water guide pipe (32), and an oil scraping component for removing oil stains on the surface of the oil-absorbing felt (34) is also arranged on the left side wall of the sewage treatment tank (1).

2. A plant oil saponin acidified wastewater treatment device according to claim 1, characterized in that: A filter screen plate (313) is provided in the water inlet (2), and openings for rolling up the oil-absorbing felt (34) are provided on both the left and right sides of the sewage treatment box (1).

3. A plant oil saponin acidified wastewater treatment device according to claim 2, characterized in that: The oil scraping component comprises a rotating shaft (314) arranged on the left side wall of the sewage treatment tank (1) and an oil scraping plate (315) connected to the rotating shaft (314), wherein the upper end of the oil scraping plate (315) is close to the surface of the rotating roller (33).

4. A plant oil saponin acidified wastewater treatment device according to claim 3, characterized in that: Torsion springs (316) are provided at both ends of the rotating shaft (314), and an oil guide groove (317) is provided at the bottom of the oil scraper plate (315).

5. A plant oil saponin acidified wastewater treatment device according to claim 1, characterized in that: The acid removal component (4) comprises three lime barrels (41) and a stirring rod (42) rotatably arranged in a sewage treatment tank (1); the outer wall of the lime barrel (41) is provided with a plurality of groups of through holes; the outer wall of the stirring rod (42) is provided with a stirring blade (43); the outer wall of the lime barrel (41) is provided with a scraper structure; and a driving member for driving the three lime barrels (41) and the stirring rod (42) and the scraper structure to operate is provided on the left side wall of the sewage treatment tank (1).

6. A plant oil saponin acidified wastewater treatment device according to claim 5, characterized in that: The driving member comprises a second motor (44) mounted on the left side wall of the sewage treatment tank (1); the output end of the second motor (44) is connected to the end of a stirring rod (42); a main gear (45) is mounted on the left end of the lime barrel (41) at the top; a sub-gear (46) meshing with the main gear (45) is mounted on the left ends of the two lime barrels (41) at the bottom; and a second synchronous belt structure (47) is arranged between the stirring rod (42) and the left end of the lime barrel (41) at the top.

7. A plant oil saponin acidified wastewater treatment device according to claim 6, characterized in that: The scraper structure comprises a reciprocating screw (48) and a guide rod (49) arranged at the bottom of the inner cavity of the sewage treatment tank (1); the outer thread of the reciprocating screw (48) is provided with a movable frame (410) slidably matched with the guide rod (49); the outer side of the movable frame (410) is provided with a scraper plate (411) close to the inner wall of the sewage treatment tank (1); the inner side is provided with a cleaning cylinder (412) close to the outer wall of the lime cylinder (41); the left end of the reciprocating screw (48) extends to the outside of the sewage treatment tank (1) and a third synchronous belt structure (413) is provided between the left end of the reciprocating screw (48) and the end of the stirring rod (42).

8. A plant oil saponin acidified wastewater treatment device according to claim 7, characterized in that: Cover plates (414) are provided at both left and right ends of the lime cylinder (41), and mounting bolts (415) are provided on the cover plates (414).

9. A plant oil saponin acidified wastewater treatment device according to claim 1, characterized in that: The mud discharge assembly (5) comprises a mud inlet bin (51) arranged at the right bottom of the sewage treatment tank (1), a mud elevator (52) is arranged on the mud inlet bin (51), and a mud discharge port (53) is arranged on the right side of the top of the mud elevator (52).

10. A plant oil saponin acidified wastewater treatment device according to claim 9, characterized in that: The bottom surface of the inner cavity of the mud inlet bin (51) is tilted downward from left to right, and the outer wall of the mud elevator (52) located inside the mud inlet bin (51) is provided with a plurality of water outlet holes (54).

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