A pretreatment equipment for bearing grease cleaning wastewater

Abstract

The present invention belongs to the technical field of bearing grease cleaning wastewater treatment, and discloses a pretreatment device for bearing grease cleaning wastewater, including a collection and reaction module. The collection and reaction module includes an automatic heat preservation collection area, a microbubble reaction area, and an effluent area. An automatic oil and slag scraping area is placed between the microbubble reaction area and the effluent area. It also includes: a driving component, which is installed above the automatic oil and slag scraping area, and an active component is meshed and connected to the outside of the driving component. The present invention automatically controls heating and heat preservation through a temperature sensor to prevent the grease from solidifying due to the cooling of the wastewater. The liquid grease floats in the wastewater, facilitating subsequent removal; a microbubble generator is set in the microbubble reaction area and adjusted according to the concentration of the wastewater to prevent excessive wastewater from being scraped out; the equipment operates fully automatically, only requiring daily inspection and regular replacement of waste ton barrels, greatly reducing labor; the effluent water quality is stable, reducing the load on the subsequent treatment system.

Description

Technical Field

[0001] The invention belongs to the technical field of bearing grease cleaning wastewater treatment, and specifically relates to a pretreatment device for bearing grease cleaning wastewater. Background Art

[0002] During the production and processing of bearings, grease is used for lubrication. After processing, high-temperature water (95 - 100 °C) is used for soaking and rinsing to remove the grease on the bearing surface. Both the production and cleaning processes are at high temperatures, and the grease will melt into a liquid state. When the cleaning wastewater is discharged, as the temperature of the wastewater gradually decreases, when the temperature is lower than 50 °C, the melted grease will start to gradually solidify and mix with the suspended solids in the cleaning wastewater, suspending in the wastewater. The main characteristics of this wastewater are that the grease content and the suspended solid concentration are very high, and the temperature is relatively high.

[0003] Currently, the conventional treatment is basically to wait for the wastewater to cool naturally, and then manually clean the large pieces of solidified grease and suspended solids in the wastewater. The remaining wastewater is then discharged to the wastewater treatment station for treatment, or directly send the grease cleaning water as hazardous waste for external treatment. Such treatment methods have many problems, mainly as follows: Manual removal of grease requires special personnel, and the labor cost is relatively high; when manual removal is not timely or thorough, it is easy to block the subsequent water pumps and other water treatment equipment. At the same time, when the grease enters the subsequent biochemical system, it will cause the system to break down; directly sending the grease cleaning water for external treatment has a relatively high external treatment cost; the suspended solid concentration in the wastewater is very high, which will increase the treatment load of the subsequent system.

[0004] At the same time, the existing automatic oil scraping and slag scraping mechanism only sets a scraper to scrape the scum and suspended solids on the top of the wastewater, which is extremely easy to be incomplete in scraping, thus affecting the subsequent normal use. Therefore, in summary, it needs to be improved. Summary of the Invention

[0005] To solve the problem of poor cleaning effect proposed in the above background art, the invention provides a pretreatment device for bearing grease cleaning wastewater. The wastewater treated by the invention is mainly bearing grease cleaning wastewater. The main characteristics of the wastewater are high temperature, high suspended solid concentration, and high oil content. When the temperature of the wastewater decreases, the melted grease will solidify and form oil slag together with the suspended solids, suspending in the wastewater. It is difficult to separate the oil slag, suspended solids, and water, and the treatment difficulty is relatively high. Directly sending it as hazardous waste for external disposal has a relatively high cost. When manually treating the oil slag and suspended solids, it is difficult to handle them cleanly, consuming labor and having a poor treatment effect. Discharging it into the conventional wastewater system will affect the operation of the subsequent wastewater treatment system; using the device of this solution to treat bearing grease cleaning wastewater, the system operates fully automatically, reducing manual intervention and having stable effluent.

[0006] To achieve the above object, the present invention provides the following technical solution: a bearing grease cleaning wastewater pretreatment device, comprising a collection reaction module, the collection reaction module comprising an automatic heat preservation collection area, a microbubble reaction area and a water outlet area, an automatic oil scraping and slag scraping area is placed between the microbubble reaction area and the water outlet area, and also includes:

[0007] A driving assembly, wherein the driving assembly is installed above the automatic oil scraping and slag scraping area, and the outer side of the driving assembly is meshingly connected with a movable assembly;

[0008] A moving component, wherein the moving component is movably connected to the inner cavity of the automatic oil scraping and slag scraping area, and the top end of the moving component is wound on the driving component;

[0009] A resistance component, the resistance component is arranged on one side of the upper end of the automatic oil scraping and slag scraping area;

[0010] The moving assembly includes an alloy net, and third chains are installed on both sides of the top of the alloy net, and the top of the third chain is wound around the outer wall of the driving assembly;

[0011] The driving assembly comprises a roller shaft, and a rotating shaft is movably sleeved at the middle end of the roller shaft;

[0012] The resistance component includes a limiting component fixedly connected to the automatic oil and slag scraping area, one end of the limiting component is hinged with a baffle, the side of the baffle away from the limiting component is fixed with a fourth chain, and the end of the fourth chain away from the baffle is wound around the outer wall of the roller shaft.

[0013] Preferably, the automatic oil and slag scraping area comprises an outer shell and an inner shell assembly, the inner shell assembly comprises an inner shell, first chains are symmetrically installed on both sides of the inner cavity of the inner shell, the bottom of the first chain is fixedly connected to the alloy net, and one side of the first chain abuts against a stop shaft installed on the inner shell;

[0014] When the alloy net is driven upward by external force and the bottom end of the first chain moves upward synchronously, the lower end of the first chain will be blocked by the stop shaft after moving up a certain distance, pulling the bottom end of the alloy net and positioning the alloy net.

[0015] Preferably, the side walls of the top surface of the inner shell are all provided with bevels, and a scum collection area is formed between the outer shell and the inner shell.

[0016] Preferably, the driving assembly comprises a first servo motor, the output end of the first servo motor is fixedly connected to the roller shaft, a second chain is installed on the outer wall of the rotating shaft, and the bottom of the second chain is fixedly connected to the bottom surface of the inner cavity of the alloy net.

[0017] Preferably, a gear is disposed on the outer wall of the rotating shaft, and the gear is meshingly connected with the movable component.

[0018] Preferably, the bottoms of both sides of the alloy scoop net are fixedly connected to the first chain. The shape of the third chain is "human"-shaped, and the top end of the third chain is wound around the outer wall of the roller shaft.

[0019] Preferably, the movable assembly includes a mounting frame. A second servo motor is installed inside the mounting frame. The output end of the second servo motor is fixedly connected to a spur gear, and the outer wall of the spur gear is meshed and connected to a gear.

[0020] Preferably, the limiting assembly includes a C-shaped plate. The bottom of the C-shaped plate is fixedly connected to the inner shell. A rectangular plate is movably connected inside the upper end of the inner shell. One end of the rectangular plate away from the C-shaped plate is hinged to a baffle, and the rectangular plate and the C-shaped plate are elastically connected by a flexible spring.

[0021] Preferably, a second bracket is installed on the outer wall of the C-shaped plate. A first bracket for limiting the first servo motor is fixedly connected to the outer wall of the second bracket. A limiting roller for limiting the fourth chain is provided at one end of the second bracket away from the C-shaped plate. A fixing plate of a limiting roller shaft is sleeved on the outer wall of the limiting roller;

[0022] An inclined angle is provided on one side of the bottom of the baffle close to the alloy scoop net.

[0023] Preferably, the length value of the fourth chain is greater than the length value of the third chain, and the length value of the fourth chain wound around the roller shaft is greater than the length value of the third chain wound around the roller shaft.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] The present invention automatically controls heating and heat preservation through a temperature sensor to prevent the cooling of wastewater from causing the solidification of butter. The liquid butter is suspended in the wastewater, which is convenient for subsequent removal. A microbubble generator is arranged in the microbubble reaction zone to fully contact with the suspended substances in the water. The bubbles and the suspended substances form a stable gas-entrained floc, whose density is less than that of water. The gas-entrained floc quickly rises to the water surface and aggregates into scum on the water surface. At the same time, the liquid butter will also float to the water surface together with the scum, which is convenient for scraping in the subsequent section. The suspended substances and scum floating on the water surface are scraped off through the automatic oil-scraping and scum-scraping zone. At the same time, the scraping rate can be set in the microbubble reaction zone and adjusted according to the concentration of the wastewater to prevent excessive wastewater from being scraped out. The equipment operates fully automatically, only requiring daily inspection and regular replacement of the ton barrels, greatly reducing labor. The effluent water quality is stable, reducing the load of the subsequent treatment system.

[0026] Through the automatic pretreatment of bearing butter wastewater, the present invention can remove most of the suspended substances and butter in the wastewater. The treatment effect is stable, the degree of automation is high, and the operation and management are convenient. It reduces the amount of hazardous waste outsourced and also prevents the instability of manual operation, making the influent of the subsequent wastewater treatment station more stable. At the same time, it also reduces the treatment load and operating cost of the subsequent section.

[0027] The present invention improves the centralized collection effect of scum by arranging the coordination of structures such as the alloy net and the driving assembly, so that the first servo motor drives the third chain wound on the outer wall of the roller to reel in through the roller, so that the bottom end of the third chain pulls the alloy net upward as a whole. At this time, water will flow down from the inside of the alloy net, and scum and suspended matter will remain inside the alloy net. The scum located on the surface of the wastewater will be concentrated and collected inside the alloy net.

[0028] The present invention compresses the scum collected by the alloy net by setting up the cooperation of structures such as the resistance component and the moving component, so that the excess waste water is discharged. Due to the limitation of the length value of the fourth chain and the third chain, when the alloy net is moved upward from the inside of the inner shell, the fourth chain will synchronously pull the baffle plate to move in the direction of the roller shaft. The pulling of the baffle plate will drive the rectangular plate to move outward from the inside of the C-shaped plate. On the one hand, the pulled alloy net will be squeezed by the roller shaft and the baffle plate to compress the scum and suspended matter inside the alloy net, so that the waste water contained in the scum is discharged.

[0029] The present invention facilitates the discharge of collected scum and suspended matter by arranging the coordination of structures such as a rotating shaft and a second chain. The second servo motor drives the gear on the outer wall of the rotating shaft to rotate through a spur gear. The rotation of the rotating shaft causes the top end of the second chain to be wound around the outer wall of the rotating shaft. The second chain is pulled up to pull up the middle part of the bottom end of the alloy bag net. Due to the limitation of the first chain, the scum and suspended matter in the inner cavity of the alloy bag net are flipped outward and fall into the area between the outer shell and the inner shell for collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall process structure of the present invention;

[0031] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0032] Figure 3 It is a schematic diagram of the structural matching relationship between the outer shell and the rotating shaft of the present invention;

[0033] Figure 4 It is a schematic diagram of the front cross-section structure of the outer shell of the present invention;

[0034] Figure 5 for Figure 4 A schematic diagram of the partially enlarged structure at center A;

[0035] Figure 6 for Figure 4 A schematic diagram of the partially enlarged structure at B in the middle;

[0036] Figure 7 It is a schematic diagram of the structural matching relationship between the spur gear and the rotating shaft of the present invention;

[0037] Figure 8 It is a schematic diagram of the structural matching relationship between the inner housing and the first chain of the present invention;

[0038] Figure 9 It is a schematic diagram of the subdivided structure of the conflicting components of the present invention;

[0039] Figure 10 It is a schematic diagram of the subdivided structure of the limiting component of the present invention.

[0040] In the figure: 1. Collection reaction module; 11. Automatic heat preservation collection area; 12. Micro bubble reaction area; 13. Water outlet area; 2. Automatic oil and slag scraping area; 21. Outer shell; 22. Inner shell assembly; 221. Inner shell; 222. First chain; 223. Block shaft; 3. Drive assembly; 31. First servo motor; 32. Roller; 33. Rotating shaft; 34. Second chain; 4. Moving assembly; 41. Alloy net; 42. Third chain; 5. Movable assembly; 51. Spur gear; 52. Second servo motor; 53. Mounting frame; 6. Resistance assembly; 61. Baffle; 62. Limit assembly; 621. C-shaped plate; 622. Rectangular plate; 623. Flexible spring; 63. Fourth chain; 64. First bracket; 65. Second bracket; 66. Fixed plate; 67. Limit roller. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0042] like Figures 1 to 10 As shown, the present invention provides a bearing grease cleaning wastewater pretreatment device, comprising a collection reaction module 1, the collection reaction module 1 comprises an automatic heat preservation collection area 11, a microbubble reaction area 12 and a water outlet area 13, an automatic oil scraping and slag scraping area 2 is placed between the microbubble reaction area 12 and the water outlet area 13, and also comprises:

[0043] A driving component 3, the driving component 3 is installed above the automatic oil scraping and slag scraping area 2, and the outer side of the driving component 3 is meshedly connected with a movable component 5;

[0044] A moving component 4, the moving component 4 is movably connected to the inner cavity of the automatic oil scraping and slag scraping area 2, and the top end of the moving component 4 is wound on the driving component 3;

[0045] The resistance component 6 is arranged on one side of the upper end of the automatic oil scraping and slag scraping area 2;

[0046] The moving assembly 4 includes an alloy net 41, and third chains 42 are installed on both sides of the top of the alloy net 41. The top of the third chain 42 is wound around the outer wall of the driving assembly 3;

[0047] The driving assembly 3 includes a roller shaft 32, and a rotating shaft 33 is movably sleeved at the middle end of the roller shaft 32;

[0048] The resistance component 6 includes a limit component 62 fixedly connected to the automatic oil and slag scraping area 2, one end of the limit component 62 is hinged with a baffle 61, a side of the baffle 61 away from the limit component 62 is fixedly connected with a fourth chain 63, and one end of the fourth chain 63 away from the baffle 61 is wound around the outer wall of the roller 32.

[0049] like Figure 4 and Figure 8 As shown, the automatic oil scraping and slag scraping area 2 includes an outer shell 21 and an inner shell assembly 22. The inner shell assembly 22 includes an inner shell 221. First chains 222 are symmetrically installed on both sides of the inner cavity of the inner shell 221. The bottom of the first chain 222 is fixedly connected to the alloy net 41. One side of the first chain 222 abuts against a stop shaft 223 installed on the inner shell 221.

[0050] When the alloy net 41 is driven upward by external force and the bottom end of the first chain 222 moves upward synchronously, the lower end of the first chain 222 will be blocked by the blocking shaft 223 after moving upward for a distance, pulling the bottom end of the alloy net 41 and positioning the alloy net 41.

[0051] like Figure 8 As shown, the side walls of the top surface of the inner shell 221 are all provided with bevels, and a scum collection area is formed between the outer shell 21 and the inner shell 221 .

[0052] By adopting the above solution, the opening of the oblique angle of the top side wall of the inner shell 221 will facilitate the subsequent discharge of scum.

[0053] like Figures 4 to 6 As shown, the driving assembly 3 includes a first servo motor 31 , the output end of the first servo motor 31 is fixedly connected to the roller shaft 32 , the outer wall of the rotating shaft 33 is installed with a second chain 34 , and the bottom of the second chain 34 is fixedly connected to the bottom surface of the inner cavity of the alloy net 41 .

[0054] With the above solution, when the shaft 33 rotates, the upper end of the second chain 34 will be wound around the outer wall of the shaft 33. At this time, the bottom of the second chain 34 will pull the middle part of the bottom end of the alloy net 41 upward, causing the scum inside the alloy net 41 to fall out.

[0055] like Figure 5 and Figure 7 As shown, a gear is disposed on the outer wall of the rotating shaft 33 , and the gear is meshedly connected with the movable component 5 .

[0056] likeFigure 4 , Figure 8 and Figure 9 As shown in Figure 4 , Figure 8 and Figure 9 , the bottoms on both sides of the alloy scoop net 41 are fixedly connected to the first chain 222. The outer shape of the third chain 42 is in a "human" shape, and the top end of the third chain 42 is wound around the outer wall of the roller shaft 32.

[0057] With the above solution: The "human" shape design will improve the stability of the alloy scoop net 41 being pulled upward. At the same time, when the top end of the third chain 42 is wound around the outer wall of the roller shaft 32, it will drive the entire alloy scoop net 41 to be wound around the outer wall of the roller shaft 32, thereby mechanically squeezing the floating slag scooped inside the alloy scoop net 41.

[0058] As Figure 7 and Figure 9 shown in Figure 7 and Figure 9 , the movable component 5 includes a mounting frame 53. A second servo motor 52 is installed inside the mounting frame 53. The output end of the second servo motor 52 is fixedly connected to a spur gear 51, and the outer wall of the spur gear 51 is meshed and connected to a gear.

[0059] With the above solution: When the second servo motor 52 is started, it will drive the entire rotation of the rotating shaft 33 through the gear connected to the rotating shaft 33. When the rotating shaft 33 rotates, it drives the top end of the second chain 34 to be successfully wound around the outer wall of the rotating shaft 33.

[0060] As Figure 10 shown in Figure 10 , the limiting component 62 includes a C-shaped plate 621. The bottom of the C-shaped plate 621 is fixedly connected to the inner housing 221. A rectangular plate 622 is movably connected inside the upper end of the inner housing 221. One end of the rectangular plate 622 away from the C-shaped plate 621 is hinged to a baffle 61, and the rectangular plate 622 and the C-shaped plate 621 are elastically connected by a flexible spring 623.

[0061] With the above solution: When the roller shaft 32 rotates, it will drive the baffle 61 to move towards the direction close to the first servo motor 31 through the fourth chain 63.

[0062] As Figure 9 shown in Figure 9 , a second bracket 65 is installed on the outer wall of the C-shaped plate 621. A first bracket 64 for limiting the first servo motor 31 is fixedly connected to the outer wall of the second bracket 65. One end of the second bracket 65 away from the C-shaped plate 621 is provided with a limiting roller 67 for limiting the fourth chain 63, and a fixing plate 66 of the limiting roller shaft 32 is sleeved on the outer wall of the limiting roller 67;

[0063] An inclined angle is provided on one side of the bottom of the baffle 61 close to the alloy scoop net 41. The length value of the fourth chain 63 is greater than the length value of the third chain 42, and the length value of the fourth chain 63 wound around the roller shaft 32 is greater than the length value of the third chain 42 wound around the roller shaft 32.

[0064] Adopting the above solution: When the baffle 61 is moved towards the alloy sieve 41 by the fourth chain 63, the bottom end of the baffle 61 near the alloy sieve 41 will squeeze the alloy sieve 41 that is pulled upward from the inside of the inner housing 221. At the same time, the outer wall of the alloy sieve 41 will be squeezed by the inclined surface at the bottom end of the baffle 61. Also, due to the hinged connection between the baffle 61 and the rectangular plate 622, the pulling of the fourth chain 63, and the squeezing of the alloy sieve 41, the overall baffle 61 will tilt, and the baffle 61 will exert a squeezing force on the outer wall of the alloy sieve 41.

[0065] The working principle and usage process of the present invention:

[0066] First, in the automatic heat preservation collection area 11 of bearing grease wastewater, the temperature sensor monitors the temperature of the wastewater in the pool. When the wastewater temperature is lower than 50°C, the electric heating rod inside the automatic heat preservation collection area 11 starts to heat up, maintaining the wastewater temperature between 50 - 55°C to prevent the grease from solidifying. Different greases have different solidification temperatures, and the temperature control range can be set on the PLC; the heat preservation area is also an adjustment and temporary storage area where the wastewater can be temporarily stored and the water quality and water volume can be adjusted.

[0067] Finally, the wastewater that has been heated up and heat-preserved is lifted to the microbubble reaction area 12 by a water pump. When the water enters, the compressed air valve is opened, and a large number of microbubbles are generated from the compressed air through the microbubble release device. The diameter of the microbubbles is less than 20 microns, which can fully combine with the suspended substances in the wastewater. The wastewater and the microbubbles are fully mixed in the microbubble reaction area 12, and the effluent flows to the automatic oil and scum scraping area 2, where the waste scum is scraped off. The wastewater after scum scraping flows to the effluent area 13 and is lifted to the conventional wastewater treatment station for further treatment by a lift pump.

[0068] Among them, when it is necessary to scrape and clean the scum and suspended substances inside the inner housing 221, the first servo motor 31 is started, and the first servo motor 31 drives the third chain 42 wound around the outer wall of the roller shaft 32 to wind up through the roller shaft 32, so that the bottom end of the third chain 42 pulls the entire alloy sieve 41 upward. At this time, the water will flow downward from the inside of the alloy sieve 41, and the scum and suspended substances will remain inside the alloy sieve 41. As the roller shaft 32 continues to rotate, two-thirds of the area of the alloy sieve 41 is separated from the inner housing 221, and part of the area of the alloy sieve 41 is also wound around the outer wall of the roller shaft 32;

[0069] When the roller 32 drives the third chain 42 to wind up, due to the limitation of the length values of the fourth chain 63 and the third chain 42, when the alloy scoop net 41 is lifted upward from the inside of the inner housing 221, the fourth chain 63 will be wound up synchronously by the roller 32. At this time, the fourth chain 63 will synchronously pull the baffle 61 to move in the direction of the roller 32. When the baffle 61 is pulled, it will synchronously drive the rectangular plate 622 to move outward from the inside of the C-shaped plate 621. At this time, the lifted alloy scoop net 41 will be compressed by the extrusion of the roller 32 and the baffle 61 on the floating slag and suspended matter inside the alloy scoop net 41, so that the wastewater contained in the floating slag is discharged. At this time, when the floating slag and suspended matter inside the alloy scoop net 41 are pulled to the upper part of the inner housing 221, only the wastewater from which the floating slag and suspended matter have been removed remains inside the inner housing 221. At this time, the wastewater is discharged into the water outlet area 13.

[0070] The alloy scoop net 41 containing floating slag and suspended matter is placed inside the inner housing 221 by the first servo motor 31. At this time, the second servo motor 52 drives the gear on the outer wall of the rotating shaft 33 to rotate through the spur gear 51. The rotation of the rotating shaft 33 will cause the top of the second chain 34 to wind around the outer wall of the rotating shaft 33. The upward pull of the second chain 34 will cause the middle part of the bottom of the alloy scoop net 41 to be pulled upward. And due to the limitation of the first chain 222, the floating slag and suspended matter in the inner cavity of the alloy scoop net 41 will be turned outward and fall into the area between the outer housing 21 and the inner housing 221.

[0071] It should be noted that: the automatic heat preservation collection area 11 includes a heating tank, a temperature sensor, and an electric heating rod, the microbubble reaction area 12 includes a microbubble release device, and the water outlet area 13 includes a water outlet tank, a liquid level transmitter, and a drainage pump. All equipment operates automatically through PLC control.

[0072] Automatic heat preservation collection area 11: The bearing grease cleaning wastewater is collected and discharged to the automatic heat preservation collection area 11. A liquid level sensor, a temperature sensor, and an electric heater are set in the pool. The wastewater is temporarily stored in the heat preservation collection pool. The temperature sensor monitors the wastewater temperature. When the water temperature is lower than 50 °C, the electric heater is started to heat, and the wastewater is heated to 60 - 65 °C. The heating temperature can be set on the PLC touch screen. The wastewater maintains a temperature of 50 - 60 °C in the heat preservation collection pool, so that the grease in the wastewater is in a dissolved state, which is convenient for subsequent lifting and transfer; when the liquid level in the heat preservation collection pool reaches the middle liquid level, the lifting pump is started to lift the wastewater to the microbubble reaction area 12; when the liquid level in the collection pool is at the low liquid level and the liquid level in the water outlet pool is at the high liquid level, the lifting pump stops; and when the liquid level is at the low liquid level, the electric heater stops operating.

[0073] Microbubble reaction zone 12: The heated wastewater is lifted to the microbubble reaction zone 12 by a lift pump. When the lift pump starts, the compressed air intake valve opens to introduce compressed air, and at the same time, the microbubble reactor starts. The compressed air enters the microbubble reactor to generate microbubbles with a diameter of 10 - 20 μm. Countless generated microbubbles enter the wastewater evenly through the air distribution device at the bottom of the reaction tank. The bubbles gather and float in the wastewater. During the floating process of the microbubbles, they come into full contact with the suspended solids and oil substances in the wastewater, forming stable gas-entrained flocs with a density less than that of water. During the reaction process, the gas-entrained flocs rise and float to the water surface, and at the same time, the oil substances in the wastewater also float to the water surface with the bubbles.

[0074] Automatic oil and scum scraping zone 2: The wastewater after microbubble reaction flows to the automatic oil and scum scraping zone 2. At this time, the suspended solids and oil substances in the wastewater have aggregated into scum on the water surface and are scraped into the slag discharge pipeline by the automatic slag scraper and flow into the waste oil and waste residue ton barrels for regular external disposal; the wastewater from which the scum has been scraped flows to the water outlet area; the slag scraper can manually adjust the slag scraping frequency according to the incoming water concentration to minimize the moisture content of the waste slag; the start and stop of the slag scraper are controlled by the lift pump in the collection tank, and when the lift pump starts, the slag scraper starts.

[0075] Water outlet area 13: The treated wastewater flows to the water outlet area 13. A liquid level sensor is set in the water outlet area. When the liquid level is at the middle level, the drainage pump starts to discharge the wastewater to the subsequent system for further treatment.

[0076] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0077] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made therein without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pretreatment device for bearing grease cleaning wastewater, comprising a collection and reaction module (1), the collection and reaction module (1) including an automatic heat preservation collection area (11), a microbubble reaction area (12) and an effluent area (13), an automatic oil and scum scraping area (2) being arranged between the microbubble reaction area (12) and the effluent area (13), characterized in that: Also includes: A driving component (3), the driving component (3) being mounted above the automatic oil scraping and slag scraping area (2), and the outer side of the driving component (3) being meshingly connected with a movable component (5); A moving component (4), the moving component (4) being movably connected to the inner cavity of the automatic oil scraping and slag scraping area (2), and the top end of the moving component (4) being wound on the driving component (3); A resistance component (6), the resistance component (6) being arranged on one side of the upper end of the automatic oil scraping and slag scraping area (2); The moving component (4) comprises an alloy net (41), and third chains (42) are installed on both sides of the top of the alloy net (41), and the top of the third chain (42) is wound around the outer wall of the driving component (3); The driving assembly (3) comprises a roller shaft (32), and a rotating shaft (33) is movably sleeved at the middle end of the roller shaft (32); The abutment component (6) comprises a limit component (62) fixedly connected to the automatic oil scraping and slag scraping area (2), one end of the limit component (62) being hingedly connected to a baffle (61), a side of the baffle (61) away from the limit component (62) being fixedly connected to a fourth chain (63), and an end of the fourth chain (63) away from the baffle (61) being wound around the outer wall of the roller shaft (32); The automatic oil and slag scraping area (2) comprises an outer shell (21) and an inner shell assembly (22), the inner shell assembly (22) comprising an inner shell (221), first chains (222) being symmetrically mounted on both sides of an inner cavity of the inner shell (221), the bottom of the first chain (222) being fixedly connected to an alloy net (41), and one side of the first chain (222) being in contact with a stopper shaft (223) mounted on the inner shell (221); When the alloy net (41) is driven upward by an external force and the bottom end of the first chain (222) is synchronously moved upward, the bottom end of the first chain (222) is blocked by the blocking shaft (223) after moving upward for a certain distance, thereby pulling the bottom end of the alloy net (41) and positioning the alloy net (41); The driving assembly (3) comprises a first servo motor (31), the output end of the first servo motor (31) is fixedly connected to the roller shaft (32), the outer wall of the rotating shaft (33) is mounted with a second chain (34), and the bottom of the second chain (34) is fixedly connected to the bottom surface of the inner cavity of the alloy net (41); The length of the fourth chain (63) is greater than the length of the third chain (42), and the length of the fourth chain (63) wound on the roller (32) is greater than the length of the third chain (42) wound on the roller (32); The limiting assembly (62) comprises a C-shaped plate (621), the bottom of the C-shaped plate (621) is fixedly connected to the inner shell (221), the upper end of the inner shell (221) is internally movably connected to a rectangular plate (622), one end of the rectangular plate (622) away from the C-shaped plate (621) is hinged to the baffle (61), and the rectangular plate (622) and the C-shaped plate (621) are elastically connected via a flexible spring (623).

2. The bearing grease cleaning wastewater pretreatment equipment according to claim 1, wherein: The side walls of the top surface of the inner housing (221) are all provided with chamfers, and a scum collection area is formed between the outer housing (21) and the inner housing (221).

3. The bearing grease cleaning wastewater pretreatment equipment according to claim 1, characterized in that: The outer wall of the rotating shaft (33) is provided with a gear, and the gear is meshed and connected with the movable assembly (5).

4. The bearing grease cleaning wastewater pretreatment equipment according to claim 1, characterized in that: The bottoms of both sides of the alloy scoop net (41) are fixedly connected to the first chain (222). The outer shape of the third chain (42) is in a "person" shape, and the top end of the third chain (42) is wound around the outer wall of the roller shaft (32).

5. The bearing grease cleaning wastewater pretreatment equipment according to claim 1, characterized in that: The movable assembly (5) includes a mounting frame (53). A second servo motor (52) is installed inside the mounting frame (53). The output end of the second servo motor (52) is fixedly connected to a spur gear (51), and the outer wall of the spur gear (51) is meshed with the gear.

6. The bearing grease cleaning wastewater pretreatment equipment according to claim 1, characterized in that: A second bracket (65) is installed on the outer wall of the C-shaped plate (621). A first bracket (64) for limiting the first servo motor (31) is fixedly connected to the outer wall of the second bracket (65). A limiting roller (67) for limiting the fourth chain (63) is provided at one end of the second bracket (65) away from the C-shaped plate (621). A fixing plate (66) of the limiting roller shaft (32) is sleeved on the outer wall of the limiting roller (67); A chamfer is provided on one side of the bottom of the baffle (61) close to the alloy scoop net (41).

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