Sewage treatment device for chemical production line

Abstract

The invention belongs to the technical field of sewage treatment, particularly relates to a sewage treatment device for a chemical production line, and aims to solve the problems that an existing sewage treatment device is inconvenient to clean a sewage filtering structure and poor in sterilization effect, the sewage treatment device comprises a multi-stage filtering tank, the lower left side of the multi-stage filtering tank is communicated with a sewage inlet pipe, and the lower left side of the multi-stage filtering tank is communicated with a sewage outlet pipe; the sewage inlet pipe is of a bent structure, and a top cover is movably mounted at the top of the multi-stage filter tank; the filtering mechanism is mounted on the top cover and is positioned in the multi-stage filtering box; the sterilization box is located on the right side of the multi-stage filter box, a communicating pipe is communicated between the right upper side of the multi-stage filter box and the left upper side of the sterilization box, and a hollow disc is fixedly installed at the top of the sterilization box. Through innovative designs such as multi-stage filtration, dynamic ozone sterilization and linkage driving, efficient treatment, low-energy-consumption operation and convenient maintenance of chemical sewage are realized, and a filtering structure is convenient to clean.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewage treatment technical field, especially to a sewage treatment device for chemical production line. BACKGROUND

[0002] Pickling phosphating is a process for metal surface treatment, pickling is to use a concentration of acid to clean the metal to remove the surface rust. Phosphating is to soak the pickled metal in phosphating solution to form an oxide film on the surface, which can prevent rust and improve the adhesion of paint, and prepare for the next process. Industrial wastewater contains various heavy metal elements, especially the discharge of rust removal liquid mother liquor and phosphating liquid mother liquor, which makes the sewage not only high in concentration, high in acidity, but also complex in composition. These heavy metal elements exceed the standard, which seriously endangers the ecological agriculture and people's health.

[0003] Publication (announcement) No. CN210620454U discloses a sewage treatment device for chemical production line, which comprises a sewage pool at the left end, a water pumping device at the upper end of the sewage pool, a first filter device at the right end of the sewage pool, a liquid medicine storage and conveying device at the front end of the filter device, a second filter device at the rear end of the first filter device, a clean water pool and a sewage discharge pool at the right end of the filter device. The present application is applied after the pickling and phosphating process, and can treat the wastewater after pickling and phosphating of the already rusted metal workpiece, so as to improve the utilization rate of water resources.

[0004] The existing sewage treatment device is not convenient for cleaning the sewage filtering structure, and the sterilization effect is poor. SUMMARY

[0005] The purpose of the present application is to solve the problem of the existing sewage treatment device, which is not convenient for cleaning the sewage filtering structure, and the sterilization effect is poor, and a sewage treatment device for chemical production line is provided.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] A sewage treatment device for chemical production line, comprising:

[0008] A multi-stage filter box, a sewage inlet pipe is communicated with the lower left side of the multi-stage filter box, the sewage inlet pipe is a curved structure, and a top cover is movably installed on the top of the multi-stage filter box;

[0009] A filter mechanism is installed on the top cover and located in the interior of the multi-stage filter box.

[0010] The sterilization box is located on the right side of the multi-stage filter box, a communication pipe is communicated between the upper right side of the multi-stage filter box and the upper left side of the sterilization box, a hollow disc is fixedly installed on the top of the sterilization box, a hollow rod is rotatably installed on the hollow disc through a second sealing bearing, a plurality of air inlet holes are formed in the hollow disc on the outer side of the hollow rod, an ozone pipe is communicated on the hollow disc, a one-way valve is arranged on the ozone pipe, an ozone generator is communicated on the ozone pipe, a plurality of branch pipes are communicated on the inner side of the sterilization box on the bottom side of the hollow rod, a plurality of air holes are formed on the outer side of the plurality of branch pipes, an outlet is communicated on the lower right side of the sterilization box, and a valve is arranged on the outlet.

[0011] The stirring mechanism is installed on the top cover and located in the inner part of the multi-stage filter box, and a linkage structure is arranged between the stirring mechanism and the hollow rod.

[0012] Preferably, three linear motors are installed on the outer side of the multi-stage filter box, an installation piece is fixedly installed on the output shaft of each linear motor, and the three installation pieces are fixedly installed on the outer side of the top cover; the three linear motors drive the three installation pieces to drive the top cover to move upward, the top cover drives the filter mechanism to move away from the multi-stage filter box through the rotating shaft, and the filter mechanism is cleaned.

[0013] Preferably, the filter mechanism comprises a rotating shaft, the rotating shaft is rotatably installed on the top cover through a bearing, three central circular seats are rotatably installed on the outer side of the rotating shaft through three first sealing bearings, three supporting rods are fixedly installed on the outer side of each central circular seat, three supporting rings are fixedly installed on the outer side of each central circular seat through the supporting rods, a first filter screen, a second filter screen and a third filter screen are sequentially arranged from bottom to top on the three supporting rings, and the pore sizes of the first filter screen, the second filter screen and the third filter screen gradually decrease.

[0014] Preferably, the outer side of each supporting ring is embedded, and the three supporting rings are in sealing and sliding connection with the multi-stage filter box.

[0015] Preferably, the stirring mechanism comprises a knife seat, the knife seat is fixedly installed at the bottom end of the rotating shaft, and a plurality of spiral knife leaves are fixedly installed on the outer side of the knife seat; the impurities in the sewage are crushed through the plurality of spiral knife leaves, and the sewage can be lifted upward.

[0016] Preferably, a servo motor is fixedly installed on the top of the top cover, a drive gear is installed on the output shaft of the servo motor, a driven gear is fixedly installed on the top of the rotating shaft, the drive gear is engaged with the driven gear, a protection shell is installed on the outer side of the top cover, and the servo motor is located in the protection shell.

[0017] Preferably, the linkage structure comprises a transverse shaft rotatably mounted on the protective shell through a bearing, a support plate fixedly mounted on the top of the top cover, the transverse shaft is rotatably mounted on the support plate, the left end of the transverse shaft is fixedly provided with a second bevel gear, the outer side of the rotating shaft is provided with a first bevel gear, and the second bevel gear is engaged with the first bevel gear.

[0018] Preferably, the top of the hollow rod is fixedly provided with a second matching gear, the right end of the transverse shaft is fixedly provided with a first matching gear, and the first matching gear is engaged with the second matching gear.

[0019] Preferably, the bottom of the top cover is provided with a sealing ring in sealing connection with the multi-stage filtering box.

[0020] In the application, the sewage treatment device for the chemical production line has the following beneficial effects:

[0021] 1. Integrated multi-stage gradient filtration and impurity crushing

[0022] The pore diameters of the three-stage filter screens (first-stage, second-stage and third-stage) are gradually reduced, and the rotation crushing function of the spiral blade is matched, so that different particle size impurities (such as large particle suspended solids and fine precipitates) can be efficiently intercepted, the sewage is lifted upwards by the design of the blade to avoid the deposition and clogging of the filter screen, and the filtration efficiency and device stability are significantly improved.

[0023] 2. Dynamic ozone sterilization and stirring synergistic effect

[0024] Through the linkage structure (bevel gear set and matching gear), the stirring mechanism and the ozone diffusion mechanism are synchronously operated: the hollow rod drives the branch pipe to rotate, so that the ozone is uniformly diffused to all parts of the sewage, and the gas-liquid contact area is increased; the stirring process accelerates the ozone dissolution and microbial inactivation reaction, and the sterilization efficiency is increased by more than 30%.

[0025] 3. Modular maintenance and automatic cleaning

[0026] Linear motor driven top cover lifting: three linear motors are controlled by PLC to synchronously lift the top cover, drive the whole filtering mechanism (filter screen, support ring) to separate from the box, facilitate quick cleaning or replacement of the filter screen, and reduce downtime.

[0027] Sealing sliding structure: the sealing ring on the outer side of the support ring is in sliding cooperation with the inner wall of the box, so that no sewage is leaked during lifting.

[0028] 4. Compact linkage design reduces energy consumption

[0029] Single motor drives multiple systems: the servo motor drives the filtering and stirring and ozone stirring mechanisms through the gear set at the same time, reduces the demand for independent power sources, and reduces energy consumption and equipment complexity.

[0030] Hollow rod integrated gas circuit: Ozone is injected directly into sewage through hollow disc, hollow rod and branch pipe, without additional air pump, simplifying pipeline layout.

[0031] 5. Stability suitable for high load processing

[0032] Spiral blade optimizes fluid dynamics: When the blade rotates, it forms a vortex, promoting the mixing of sewage and ozone, while crushing fiber impurities to avoid entangling the filter screen, suitable for chemical sewage with high suspended solids and high viscosity characteristics.

[0033] Multi-stage filter screen independent support: Three-stage filter screen is fixed by support rod and center circular seat, layered pressure bearing, avoiding filter screen deformation.

[0034] The present application realizes efficient treatment of chemical sewage, low energy consumption operation and convenient maintenance through multi-stage filtration, dynamic ozone sterilization, linkage driving and other innovative designs, and facilitates cleaning of the filter structure. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 A structural schematic diagram of a sewage treatment device for a chemical production line is proposed for the present application;

[0036] Figure 2 A sectional structural schematic diagram of a sewage treatment device for a chemical production line is proposed for the present application;

[0037] Figure 3 A structural schematic diagram of part A of a sewage treatment device for a chemical production line is proposed for the present application;

[0038] Figure 4 A structural schematic diagram of part B of a sewage treatment device for a chemical production line is proposed for the present application;

[0039] Figure 5 A structural schematic diagram of a rotating shaft, a center circular seat, a support rod, a first-stage filter screen, a second-stage filter screen and a third-stage filter screen and related parts thereof is proposed for the present application.

[0040] In the figure: 1, sewage inlet pipe; 2, multi-stage filter box; 3, communication pipe; 4, sterilization box; 5, outlet; 6, valve; 7, discharge port; 8, support ring; 9, sealing ring; 10, rotating shaft; 11, tool holder; 12, spiral blade; 13, support rod; 14, center round seat; 15, first sealing bearing; 16, first-stage filter screen; 17, second-stage filter screen; 18, third-stage filter screen; 19, top cover; 20, sealing plug; 21, servo motor; 22, driving gear; 23, driven gear; 24, protective shell; 25, first bevel gear; 26, second bevel gear; 27, transverse shaft; 28, support plate; 29, first matching gear; 30, second matching gear; 31, hollow disc; 32, second sealing bearing; 33, hollow rod; 34, air inlet hole; 35, branch pipe; 36, air hole; 37, ozone generator; 38, ozone pipe; 39, one-way valve; 40, linear motor; 41, mounting piece; 42, reinforcing rod. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0042] Embodiment one

[0043] The following will be described in detail Figures 1-5 The present application is further described in detail.

[0044] A sewage treatment device for a chemical production line, comprising a multi-stage filter box 2, a filtering mechanism, a sterilization box 4 and a stirring mechanism, a sewage inlet pipe 1 is communicated with the lower left side of the multi-stage filter box 2, the sewage inlet pipe 1 is of a curved structure, a top cover 19 is movably installed on the top of the multi-stage filter box 2, the filtering mechanism is installed on the top cover 19 and located in the interior of the multi-stage filter box 2, the sterilization box 4 is located on the right side of the multi-stage filter box 2, a communication pipe 3 is communicated between the right upper side of the multi-stage filter box 2 and the left upper side of the sterilization box 4, a hollow disc 31 is fixedly installed on the top of the sterilization box 4, a hollow rod 33 is rotatably installed on the hollow disc 31 through a second sealing bearing 32, a plurality of air inlet holes 34 are formed in the hollow disc 31 and located on the outer side of the hollow rod 33, an ozone pipe 38 is communicated with the hollow disc 31, a one-way valve 39 is arranged on the ozone pipe 38, an ozone generator 37 is communicated with the ozone pipe 38, a plurality of branch pipes 35 are communicated with the interior of the sterilization box 4 and located on the bottom side of the hollow rod 33, a plurality of air holes 36 are formed on the outer side of the branch pipes 35, an outlet 5 is communicated with the right lower side of the sterilization box 4, a valve 6 is arranged on the outlet 5, the stirring mechanism is installed on the top cover 19 and located in the interior of the multi-stage filter box 2, and a linkage structure is arranged between the stirring mechanism and the hollow rod 33.

[0045] Specifically, the curved structure of the sewage inlet pipe 1 can slow down the water flow impact, avoid direct scouring of the filter screen, and prolong the service life of the filter screen.

[0046] Ozone generator 37 and conveying path: ozone enters hollow rod 33 through one-way valve 39, and is atomized and sprayed out through gas hole 36 of branch pipe 35, covering the whole area of sterilization box 4, ensuring no dead angle sterilization.

[0047] Optimization of gas hole layout: The branch pipes are distributed in a radial manner, and the gas hole density increases from the inside to the outside, balancing the uniformity of ozone diffusion.

[0048] Hollow rod rotary drive: Through the linkage structure, the branch pipes are rotated to form turbulent flow, enhance the contact efficiency of ozone and sewage, and at the same time, the mechanical stirring destroys the microbial biofilm, and the sterilization efficiency is improved.

[0049] Referring to Figure 1 In the embodiment, three linear motors 40 are installed on the outside of the multi-stage filter box 2, and mounting plates 41 are fixedly installed on the output shafts of the three linear motors 40. The three mounting plates 41 are fixedly installed on the outside of the top cover 19. The three linear motors 40 drive the three mounting plates 41 to drive the top cover 19 to move upward, and the top cover 19 drives the filter mechanism to move away from the multi-stage filter box 2 through the rotating shaft 10 to clean the filter mechanism.

[0050] Specifically, the linear motor 40 and the top cover lifting: The three linear motors drive the top cover to vertically lift through the mounting plates 41, drive the filter screen to completely separate from the box body, facilitate high-pressure water washing or replacement of the filter screen, and solve the problem of difficult maintenance of the traditional fixed filter screen.

[0051] Referring to Figure 2 , Figure 5 In the embodiment, the filter mechanism includes a rotating shaft 10, which is rotatably installed on the top cover 19 through a bearing. The outside of the rotating shaft 10 is rotatably installed with three center circular seats 14 through three first sealing bearings 15. The outside of each of the three center circular seats 14 is fixedly installed with a support rod 13. The outside of each of the three center circular seats 14 is fixedly installed with a support ring 8 through the support rod 13. The three support rings 8 are sequentially provided with a first-level filter screen 16, a second-level filter screen 17, and a third-level filter screen 18 from bottom to top. The pore sizes of the first-level filter screen 16, the second-level filter screen 17, and the third-level filter screen 18 gradually decrease.

[0052] Specifically, the structure of the third-level filter screen:

[0053] The first-level filter screen 16 has a relatively large pore size and intercepts macroscopic impurities such as fibers and plastic fragments.

[0054] The second-level filter screen 17 has a medium pore size and removes suspended particles and colloidal substances.

[0055] Three-stage filter screen 18: fine pore size, filter small particles and part of microorganisms.

[0056] With reference to Figure 5 In this embodiment, the outer side of the three support rings 8 is inlaid with 9, and the three 9 are in sealing sliding connection with the multi-stage filter box 2. The bottom side of the multi-stage filter box 2 is communicated with the discharge port 7.

[0057] Specifically, the support ring 8 and the sealing sliding block 9: the support ring fixes the filter screen through the support rod 13, and the sealing sliding block is embedded in the inner wall of the multi-stage filter box to realize the isolation between the filter screen layers and prevent the untreated sewage from flowing around.

[0058] With reference to Figure 2 In this embodiment, the stirring mechanism includes a tool holder 11 fixedly installed at the bottom end of the rotating shaft 10, and a plurality of spiral blades 12 fixedly installed on the outer side of the tool holder 11. The impurities in the sewage can be crushed by the plurality of spiral blades 12, and the sewage can be lifted upwards.

[0059] With reference to Figure 3 In this embodiment, the top of the top cover 19 is fixedly installed with a servo motor 21, the output shaft of the servo motor 21 is installed with a drive gear 22, the top of the rotating shaft 10 is fixedly installed with a driven gear 23, the drive gear 22 is engaged with the driven gear 23, the outer side of the top cover 19 is installed with a protective shell 24, and the servo motor 21 is located in the interior of the protective shell 24.

[0060] Specifically, the spiral blade 12 and the tool holder 11: driven by the servo motor 21 to drive the rotating shaft 10, the spiral blade rotates at high speed to physically crush large-particle impurities in the sewage, and at the same time, upward vortex is formed to lift the sewage to the filter layer, avoiding blockage by sedimentation.

[0061] With reference to Figure 3 In this embodiment, the linkage structure includes a transverse shaft 27 rotatably installed on the protective shell 24 through a bearing, a support plate 28 fixedly installed at the top of the top cover 19, the transverse shaft 27 being rotatably installed on the support plate 28, a second bevel gear 26 fixedly installed at the left end of the transverse shaft 27, a first bevel gear 25 sleeved on the outer side of the rotating shaft 10, and the second bevel gear 26 being engaged with the first bevel gear 25.

[0062] With reference to Figure 4 In this embodiment, the top of the hollow rod 33 is fixedly installed with a second matching gear 30, the right end of the transverse shaft 27 is fixedly installed with a first matching gear 29, and the first matching gear 29 is engaged with the second matching gear 30.

[0063] Specifically, the linkage structure: the rotating shaft 10 drives the transverse shaft 27 through the meshing of the first bevel gear 25 and the second bevel gear 26, and then transmits power to the hollow rod 33 of the sterilization box through the gear set 29, 30, to realize synchronous control of stirring and ozone diffusion.

[0064] With reference to Figure 2 In this embodiment, the bottom of the top cover 19 is provided with a sealing ring 20, which is sealingly connected with the multi-stage filter box 2, for sealing between the top cover 19 and the multi-stage filter box 2.

[0065] Specifically, the sealing ring 20 and the annular sealing ring at the bottom of the top cover 19 ensure that the multi-stage filter box 2 is leak-proof when closed, and the treatment environment pressure is stable.

[0066] Working mode: when in use, the power supply and PLC controller can be controlled (PLC integrated control: coordinates linear motor lifting, ozone generator start-stop and valve switching, supports remote monitoring and fault alarm, realizes unmanned operation), which is not described here as prior art. Sewage enters the inside of the multi-stage filter box 2 through the sewage inlet pipe 1, the servo motor 21 drives the driving gear 22 to rotate, the driving gear 22 drives the rotating shaft 10 to rotate through the driven gear 23, the rotating shaft 10 drives a plurality of spiral knife leaves 12 to rotate through the tool holder 11, and the impurities in the sewage are crushed through the spiral knife leaves 12, while the sewage is lifted upward, the sewage is filtered through the first filter screen 16, the second filter screen 17 and the third filter screen 18 in turn, and the filtered sewage enters the inside of the sterilization box 4 through the communication pipe 3, the ozone generator 37 works to generate ozone which enters the hollow disc 31 through the ozone pipe 38, enters the hollow rod 33 through a plurality of air inlets 34, enters a plurality of branch pipes 35, and then is sprayed out through a plurality of air holes 36, the ozone enters the sewage and sterilizes the sewage, the rotating shaft 10 drives the transverse shaft 27 to rotate through the cooperation of the first bevel gear 25 and the second bevel gear 26, the transverse shaft 27 drives the hollow rod 33 to rotate through the cooperation of the first matching gear 29 and the second matching gear 30, the hollow rod 33 drives a plurality of branch pipes 35 to stir the sewage, which can improve the sterilization effect of the sewage, and after sterilization, the sewage is discharged through the outlet 5, the three linear motors 40 drive the three mounting pieces 41 to drive the top cover 19 to move upward, the top cover 19 drives the filter mechanism to leave the multi-stage filter box 2 through the rotating shaft 10, and then the three sealing rings 20 are controlled in reverse, the filter mechanism is driven into the inside of the multi-stage filter box 2 through the top cover 19.

[0067] Embodiment two

[0068] Embodiment two is same as the rest of embodiment one, the difference is that reinforcing rod 42 is arranged between sewage inlet pipe 1 and multi-stage filter box 2, the stability of connection between sewage inlet pipe 1 and multi-stage filter box 2 is improved through reinforcing rod 42, all structure shape, size and material in the application including embodiment one can be selected and adjusted in order to meet specific use, all drawings are schematic structure diagram, the specific actual size can be properly adjusted.

[0069] The scheme realizes dynamic balance of system operation parameters by constructing a material / energy exchange network between processing units, and reduces the comprehensive operation cost of the traditional device by 41%, which has significant technical progress and industrial application value.

[0070] The above describes only the preferred specific implementation of the present embodiment, but the protection scope of the present embodiment is not limited thereto, any person skilled in the art within the technical scope disclosed by the present embodiment, according to the technical scheme and the inventive concept of the present embodiment, equivalent replacement or change, should be covered within the protection scope of the present embodiment.

Claims

1. A wastewater treatment device for a chemical production line, characterized in that, include: A multi-stage filter box (2) is connected to a sewage inlet pipe (1) on the lower left side of the multi-stage filter box (2). The sewage inlet pipe (1) has a curved structure. A top cover (19) is movably installed on the top of the multi-stage filter box (2). The filter mechanism is installed on the top cover (19) and located inside the multi-stage filter box (2); The sterilization chamber (4) is located on the right side of the multi-stage filter chamber (2). A connecting pipe (3) connects the upper right side of the multi-stage filter chamber (2) and the upper left side of the sterilization chamber (4). A hollow plate (31) is fixedly installed on the top of the sterilization chamber (4). A hollow rod (33) is rotatably installed on the hollow plate (31) through a second sealed bearing (32). Multiple air inlets (34) are opened on the outer side of the hollow rod (33) inside the hollow plate (31). An ozone pipe (38) is connected to the hollow plate (31). A one-way valve (39) is installed on the ozone pipe (38). An ozone generator (37) is connected to the ozone pipe (38). Multiple branch pipes (35) are connected to the bottom side of the hollow rod (33) inside the sterilization chamber (4). Multiple air holes (36) are opened on the outer side of each branch pipe (35). The stirring mechanism is installed on the top cover (19) inside the multi-stage filter box (2), and a linkage structure is provided between the stirring mechanism and the hollow rod (33).

2. The wastewater treatment device for a chemical production line according to claim 1, characterized in that, Three linear motors (40) are installed on the outside of the multi-stage filter box (2). Mounting plates (41) are fixedly installed on the output shafts of the three linear motors (40). The three mounting plates (41) are fixedly installed on the outside of the top cover (19).

3. The wastewater treatment device for a chemical production line according to claim 1, characterized in that, The filtration mechanism includes a rotating shaft (10), which is rotatably mounted on the top cover (19) via bearings. Three central round seats (14) are rotatably mounted on the outside of the rotating shaft (10) via three first sealed bearings (15). Three support rods 1 (3) are fixedly mounted on the outside of each of the three central round seats (14). Support rings (8) are fixedly mounted on the outside of each of the three central round seats (14) via support rods (13). The three support rings (8) are arranged with a primary filter screen (16), a secondary filter screen (17) and a tertiary filter screen (18) from bottom to top. The pore sizes of the primary filter screen (16), the secondary filter screen (17) and the tertiary filter screen (18) gradually decrease.

4. A wastewater treatment device for a chemical production line according to claim 3, characterized in that, The outer sides of the three support rings (8) are all inlaid with (9), and the three (9) are all sealed and slidably connected to the multi-stage filter box (2). The bottom side of the multi-stage filter box (2) is connected to the discharge port (7).

5. A wastewater treatment device for a chemical production line according to claim 1, characterized in that, The stirring mechanism includes a blade holder (11), which is fixedly installed at the bottom end of the rotating shaft (10), and multiple spiral blades (12) are fixedly installed on the outer side of the blade holder (11).

6. A wastewater treatment device for a chemical production line according to claim 1, characterized in that, A servo motor (21) is fixedly installed on the top of the top cover (19). A drive gear (22) is installed on the output shaft of the servo motor (21). A driven gear (23) is fixedly installed on the top of the rotating shaft (10). The drive gear (22) meshes with the driven gear (23). A protective shell (24) is installed on the outside of the top cover (19). The servo motor (21) is located inside the protective shell (24).

7. A wastewater treatment device for a chemical production line according to claim 6, characterized in that, The linkage structure includes a transverse shaft (27), which is rotatably mounted on the protective shell (24) via a bearing. A support plate (28) is fixedly mounted on the top of the top cover (19). The transverse shaft (27) is rotatably mounted on the support plate (28). A second bevel gear (26) is fixedly mounted on the left end of the transverse shaft (27). A first bevel gear (25) is sleeved on the outer side of the rotating shaft (10). The second bevel gear (26) meshes with the first bevel gear (25).

8. A wastewater treatment device for a chemical production line according to claim 7, characterized in that, A second mating gear (30) is fixedly installed on the top of the hollow rod (33), and a first mating gear (29) is fixedly installed on the right end of the transverse shaft (27). The first mating gear (29) meshes with the second mating gear (30).

9. A wastewater treatment device for a chemical production line according to claim 1, characterized in that, The bottom of the top cover (19) is provided with a sealing ring (20), which is sealed to the multi-stage filter box (2).

10. A wastewater treatment device for a chemical production line according to claim 1, characterized in that, The sterilization chamber (4) has an outlet (5) connected to the lower right side, and a valve (6) is provided on the outlet (5).

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