A self-cleaning and wastewater discharge filtration device for grinding fluid

Abstract

This utility model provides a self-cleaning and wastewater-discharging filtration device for grinding slurry, including a recycling tank and a filtration mechanism. The filtration mechanism is located inside the recycling tank, dividing it into inner and outer chambers. An inlet is located above the outer surface of the recycling tank, a waste outlet is located below the outer surface, and a grinding slurry outlet is located at the center of the bottom of the recycling tank. In use, by installing a filter element inside the recycling tank to divide it into two chambers, the waste outlet and the grinding slurry outlet are separated. The grinding slurry to be filtered enters the recycling tank through the inlet and, under liquid pressure, penetrates into the filter element for filtration. A stirring element inside the filter element increases the fluidity of the grinding slurry, accelerates circulation, and cleans the filter element, thus improving filtration efficiency.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, and in particular to a self-cleaning and wastewater discharge filtration device for grinding fluid. Background Technology

[0002] Polishing fluid is a liquid used for processing and polishing surfaces, composed of aviation gasoline, kerosene, transformer oil, various vegetable oils, animal oils, and hydrocarbons, along with several additives.

[0003] During the polishing process of a workpiece, polishing debris from the workpiece surface mixes with the polishing fluid. To prevent this debris from scratching the workpiece surface, the used polishing fluid is usually discarded. This increases the cost of using polishing fluid. To reduce this cost, the used polishing fluid is filtered using a filtration device, allowing it to be reused.

[0004] Existing filtration devices mainly rely on the liquid's permeability to filter directly through the filter screen. As impurities increase, the filter screen gradually becomes clogged, leading to poor liquid permeability and ultimately resulting in low filtration efficiency.

[0005] Therefore, this application proposes a self-cleaning and wastewater discharge filtration device for grinding slurry to improve the filtration efficiency of grinding slurry. Utility Model Content

[0006] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a self-cleaning and wastewater discharge filtration device for grinding fluid, which solves the problem of low filtration effect mentioned in the prior art.

[0007] To achieve the above and other related objectives, this utility model provides a self-cleaning and wastewater filtration device for grinding fluid, including a recycling tank and a filtration mechanism. The filtration mechanism is located inside the recycling tank and isolates the recycling tank into two chambers, an inner and an outer chamber.

[0008] An inlet is provided above the outer surface of the recycling tank, a waste discharge outlet is provided below the outer surface of the recycling tank, and a grinding liquid discharge outlet is provided at the center of the bottom of the recycling tank. The inlet, waste discharge outlet and grinding liquid discharge outlet are all connected to the interior of the recycling tank.

[0009] The filtration mechanism includes a hollow filter element, the bottom of which is in close contact with the inner bottom of the recycling tank. The filter element is placed inside the recycling tank and is concentrically arranged with the recycling tank. The hollow cavity of the grinding liquid discharge port covers the grinding liquid discharge port.

[0010] A sealing plate is provided on the top of the filter element, which seals the upper opening of the recycling tank. A driving component is installed on the sealing plate, and a stirring component is provided at the output end of the driving component, which extends into the interior of the filter element.

[0011] Preferably, the filter element includes a connecting cylinder, a filter screen is provided on the top of the connecting cylinder, the inner and outer diameters of the connecting cylinder and the filter screen are the same, a gap is left between the outer surface of the connecting cylinder and the interior of the recycling tank, and the sealing plate is installed on the top of the filter screen.

[0012] Preferably, the outer surface of the connecting cylinder is provided with external threads;

[0013] The bottom of the recycling bin is equipped with a filter device mounting component, which is connected to an external thread.

[0014] Preferably, the stirring component includes a driving rod connected to the output end of the driving component, and a stirring turntable is provided at the lower end of the driving rod. An upper stirring blade is provided on the upper surface of the stirring turntable, and a lower stirring blade is provided on the lower surface of the stirring turntable.

[0015] Preferably, the upper and lower stirring blades are tilted in opposite directions.

[0016] Preferably, a telescopic tube is provided between the drive rod and the stirring turntable, and the telescopic tube can extend and retract vertically.

[0017] Preferably, the outer surface of the stirring disc is attached to the inner wall of the filter screen, dividing the interior of the filter screen into upper and lower chambers.

[0018] Preferably, the inner wall of the filter screen is provided with a circulation guide groove, the flattened cross section of the circulation guide groove is W-shaped, and the side of the stirring disc is symmetrically provided with a traction member with the stirring disc axis as a mirror axis, the traction member extending into the interior of the circulation guide groove.

[0019] Preferably, the traction component includes a guide rod, one end of which is connected to the outer surface of the stirring turntable, and the other end of which is provided with a rotatable ball bearing, the outer surface of which abuts against the inner wall of the circulation guide groove.

[0020] As described above, the self-cleaning and wastewater discharge filtration device for grinding fluid of this utility model has the following beneficial effects:

[0021] 1. This utility model divides the interior of the recycling tank into two chambers by setting a filter element inside the recycling tank, thus separating the waste discharge port and the grinding liquid discharge port. The grinding liquid to be filtered enters the interior of the recycling tank through the liquid inlet and penetrates into the interior of the filter element under the action of liquid pressure to achieve filtration. The stirring element set inside the filter element increases the fluidity of the grinding liquid, accelerates circulation, and cleans the filter element, thereby improving the filtration efficiency.

[0022] 2. This utility model sets the upper and lower stirring blades in opposite directions to create a velocity difference in the grinding liquid on the upper and lower layers of the filter screen, thereby enhancing the scouring of the inner wall of the filter screen and improving the self-cleaning effect. At the same time, a telescopic tube is set between the drive rod and the stirring disc, allowing the stirring disc to rise and fall under the action of liquid buoyancy, thereby driving the liquid to rinse the inner wall of the filter screen in all directions, thus improving the efficiency of self-cleaning.

[0023] 3. This utility model provides a circulation guide groove on the inner wall of the filter screen and a traction component on the outer surface of the stirring disc. Through the cooperation between the circulation guide groove and the traction component, when the stirring disc rotates, the stirring disc will actively float up and down along the trajectory of the circulation guide groove to change the volume between the upper and lower chambers of the filter screen and apply pressure to the grinding liquid, thereby further improving the self-cleaning ability. In addition, it can increase the discharge pressure and increase the discharge speed when discharging the grinding liquid.

[0024] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. Attached Figure Description

[0025] Figure 1 The diagram shown is a structural schematic of this utility model.

[0026] Figure 2 The image shown is a cross-sectional view of the recycling bin structure of this utility model.

[0027] Figure 3 The diagram shown is a structural schematic of the filtration mechanism of this utility model.

[0028] Figure 4 The diagram shown is a cross-sectional view of the filter mechanism of this utility model.

[0029] Figure 5 The diagram shown is a structural schematic of the stirring component of this utility model.

[0030] Figure 6 This utility model is shown. Figure 5 A magnified schematic diagram of the structure at point A in the middle.

[0031] Component designation explanation:

[0032] 1. Recycling tank; 11. Liquid inlet; 12. Waste discharge outlet; 13. Grinding fluid discharge outlet; 14. Filter device mounting components;

[0033] 2. Filtering mechanism; 21. Connecting cylinder; 211. Circulation guide groove; 22. External thread; 23. Filter screen; 24. Sealing plate; 25. Driving component; 26. Agitator; 261. Driving rod; 262. Telescopic tube; 263. Agitator turntable; 264. Upper agitator blade; 265. Lower agitator blade; 266. Traction component; 2661. Guide rod; 2662. Ball bearing. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0035] Please see Figures 1 to 6 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0036] like Figures 1-4 As shown, this utility model provides a self-cleaning and filtration device for grinding fluid, including a recycling tank 1 and a filtration mechanism 2. The filtration mechanism 2 is located inside the recycling tank 1, which isolates the recycling tank 1 into two chambers, an inner and an outer chamber. The grinding fluid to be filtered is injected into the outer chamber inside the recycling tank 1. Then, under pressure, the grinding fluid permeates through the filtration mechanism 2 and enters the inner chamber, while impurities are isolated in the outer chamber by the filtration mechanism 2, thus achieving the filtration of the grinding fluid.

[0037] The recycling tank 1 has an inlet 11 on its outer surface, which connects to an external grinding slurry conveying device. A waste discharge port 12 is located on the lower part of the outer surface of the recycling tank 1, and a valve controls its opening and closing. A grinding slurry discharge port 13 is located at the bottom of the recycling tank 1, and a valve can also be installed on the discharge port 13 to control its opening and closing. The inlet 11, waste discharge port 12, and grinding slurry discharge port 13 are all connected to the interior of the recycling tank 1. During use, the grinding slurry to be filtered enters the outer chamber of the recycling tank 1 through the inlet 11 for filtration. Impurities filtered and precipitated by the filtration mechanism 2 settle at the bottom of the outer chamber of the recycling tank 1. When cleaning impurities, they are discharged from the waste discharge port 12 along with the remaining grinding slurry, while the filtered grinding slurry is discharged and recycled through the grinding slurry discharge port 13.

[0038] The filtration mechanism 2 includes a hollow filter element. The bottom of the filter element is in close contact with the inner bottom of the recycling tank 1, thereby dividing the interior of the recycling tank 1 into two chambers, an inner and an outer chamber, through the filter element. The filter element is placed inside the recycling tank 1 and is concentrically arranged with the recycling tank 1. The hollow cavity of the grinding liquid discharge port 13 covers the grinding liquid discharge port 13. The filtered grinding liquid will enter the interior of the filter element and then be discharged through the grinding liquid discharge port 13.

[0039] A sealing plate 24 is provided on the top of the filter element, which seals the upper opening of the recycling tank 1. A driving component 25 is installed on the sealing plate 24. The driving component 25 is a device that can generate torque, such as a motor. An agitator 26 is provided at the output end of the driving component 25. The agitator 26 extends into the interior of the filter element. When the driving component 25 drives the agitator 26 to rotate, the agitator 26 increases the fluidity of the grinding fluid. The grinding fluid washes the inner and outer walls of the filter element, thereby reducing or preventing impurities from clogging the filter element, achieving self-cleaning, and improving filtration efficiency. At the same time, the increased fluidity of the grinding fluid carries liquid pressure, which accelerates the passage of the filter element and improves the filtration effect.

[0040] like Figures 2-4As shown, in some embodiments, the filter element of this utility model includes a connecting cylinder 21. The connecting cylinder 21 is used to reserve a small amount of grinding liquid in the outer chamber, so that impurities can be carried out by the reserved grinding liquid when impurities are discharged later. A filter screen 23 is provided on the top of the connecting cylinder 21. The filter screen 23 allows the grinding liquid to permeate and filter the impurities in the grinding liquid, thereby achieving the filtration of the grinding liquid. The inner and outer diameters of the connecting cylinder 21 and the filter screen 23 are the same. A gap is left between the outer surface of the connecting cylinder 21 and the interior of the recycling tank 1. This gap is the outer chamber inside the recycling tank 1, used to store the filtered impurities. At the same time, the grinding liquid that initially enters will permeate into the interior of the filter screen 23 under the action of liquid pressure to achieve filtration. A sealing plate 24 is installed on the top of the filter screen 23.

[0041] like Figure 2 and Figure 3 As shown, in some embodiments, the outer surface of the connecting cylinder 21 of this utility model is provided with an external thread 22, and the inner bottom of the recycling tank 1 is provided with a filter device mounting part 14. The filter device mounting part 14 is threadedly connected to the external thread 22. Through this connection method, the filter mechanism 2 can be easily disassembled and assembled, thereby improving the convenience of cleaning and maintenance of the filter mechanism 2.

[0042] like Figure 5 As shown, in some embodiments, the stirring component 26 of this invention includes a drive rod 261, which is connected to the output end of the drive component 25. When the drive component 25 outputs power, the drive rod 261 will rotate accordingly. A stirring disc 263 is provided at the lower end of the drive rod 261, which divides the upper part of the filter screen 23 into upper and lower chambers. The upper surface of the stirring disc 263 is provided with an upper stirring blade 264, which is used to agitate the grinding fluid in the upper chamber of the filter screen 23, improve the fluidity of the upper grinding fluid, increase the interaction of liquid flow between the inner and outer chambers of the recycling tank 1, and enable the grinding fluid to wash the upper part of the filter screen 23. The lower surface of the stirring disc 263 is provided with a lower stirring blade 265, which is used to agitate the grinding fluid in the lower chamber of the filter screen 23, improve the fluidity of the lower grinding fluid, increase the interaction of liquid flow between the inner and outer chambers of the recycling tank 1, and enable the grinding fluid to wash the lower part of the filter screen 23, thereby improving the efficiency of self-cleaning of the filter screen 23.

[0043] like Figure 4 and Figure 5As shown, in some embodiments, the blades of the upper stirring blade 264 and the lower stirring blade 265 of this invention are tilted in opposite directions. When the stirring disc 263 rotates, because the contact surfaces of the upper stirring blade 264 and the lower stirring blade 265 with the liquid are different, the flow rates of the grinding liquid in the upper and lower parts of the filter screen 23 are different. This is used to increase the disorder of the liquid flow and to increase the diversity of the angle at which the liquid washes the filter screen 23, thereby improving the effect of cleaning the filter screen 23 and preventing clogging.

[0044] like Figure 5 As shown, in some embodiments, a telescopic tube 262 is provided between the drive rod 261 and the stirring disc 263. The telescopic tube 262 is a structure with vertical extension and retraction functions, such as a corrugated pipe or a telescopic rod. As the liquid level changes and the rotation speed of the stirring disc 263 changes, the centrifugal force generated by the liquid will change accordingly, causing the stirring disc 263 to float up and down. The vertical floating of the stirring disc 263 can increase the stirring layers of the upper stirring blade 264 and the lower stirring blade 265, and increase the comprehensiveness of the liquid rinsing the filter screen 23.

[0045] like Figure 4 As shown, in some embodiments, the outer surface of the stirring disc 263 of this invention is attached to the inner wall of the filter screen 23, dividing the interior of the filter screen 23 into upper and lower chambers. Thus, when the stirring disc 263 rises and falls, the volume of the upper and lower chambers of the filter screen 23 can be changed accordingly. When the volume decreases, pressure is applied to the grinding fluid. Under the action of pressure, the grinding fluid flows in the opposite direction from the inner cavity of the recycling tank 1 to the outer cavity of the recycling tank 1. The impact force of the reverse flow of the grinding fluid can flush away the impurities clogging the filter screen 23, which can further improve the cleaning ability of the filter screen 23.

[0046] like Figure 4 and Figure 5 As shown, in some embodiments, the inner wall of the filter screen 23 of this invention is provided with a circulation guide groove 211. The flattened cross section of the circulation guide groove 211 is W-shaped, so that the circulation guide groove 211 has an undulating guide trajectory after being connected end to end. The side of the stirring disc 263 is symmetrically provided with a traction member 266 about the axis of the stirring disc 263. The traction member 266 extends into the interior of the circulation guide groove 211. When the stirring disc 263 rotates, due to the traction of the traction member 266 and the circulation guide groove 211, the stirring disc 263 will move up and down along the trajectory of the circulation guide groove 211, so as to regularly change the volume of the upper and lower cavities inside the filter screen 23 and improve the controllability of cleaning the filter screen 23.

[0047] like Figure 6As shown, in some embodiments, the traction component 266 of this utility model includes a guide rod 2661. One end of the guide rod 2661 is connected to the outer surface of the stirring turntable 263, and the other end of the guide rod 2661 is provided with a rotatable ball bearing 2662. The outer surface of the ball bearing 2662 abuts against the inner wall of the circulation guide groove 211. When the guide rod 2661 cooperates with the circulation guide groove 211 to guide the stirring turntable 263, the ball bearing 2662 can convert the hard friction of the guide rod 2661 into rotational friction, thereby reducing friction, improving service life, and improving the sensitivity of the stirring turntable 263 movement.

[0048] In summary, the self-cleaning and filtration device for grinding fluid of this invention divides the interior of the recycling tank 1 into two chambers by setting a filter element inside the recycling tank 1, thus separating the waste discharge port 12 and the grinding fluid discharge port 13. The grinding fluid to be filtered enters the interior of the recycling tank 1 through the inlet 11 and penetrates into the interior of the filter element under the action of liquid pressure to achieve filtration. The stirring element 26 set inside the filter element increases the fluidity of the grinding fluid, accelerates circulation, and cleans the filter element, thereby improving the filtration efficiency.

[0049] This invention sets the upper stirring blade 264 and the lower stirring blade 265 in opposite directions to create a velocity difference in the grinding liquid between the upper and lower layers of the filter screen 23, thereby enhancing the scouring of the inner wall of the filter screen 23 and improving the self-cleaning effect. At the same time, a telescopic tube 262 is set between the drive rod 261 and the stirring disc 263, so that the stirring disc 263 can be raised and lowered under the action of liquid buoyancy, thereby driving the liquid to rinse the inner wall of the filter screen 23 in all directions, thereby improving the efficiency of self-cleaning.

[0050] This invention provides a circulation guide groove 211 on the inner wall of the filter screen 23 and a traction member 266 on the outer surface of the stirring disc 263. Through the cooperation between the circulation guide groove 211 and the traction member 266, when the stirring disc 263 rotates, the stirring disc 263 will actively float up and down along the trajectory of the circulation guide groove 211 to change the volume between the upper and lower chambers of the filter screen 23 and apply pressure to the grinding fluid, thereby further improving the self-cleaning ability. In addition, it can increase the discharge pressure and increase the discharge speed when discharging the grinding fluid.

[0051] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0052] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A self-cleaning and wastewater discharge filtration device for grinding fluid, characterized in that, It includes a recycling tank (1) and a filtration mechanism (2), wherein the filtration mechanism (2) is disposed inside the recycling tank (1) and isolates the recycling tank (1) into two chambers, an inner and an outer chamber; An inlet (11) is provided above the outer surface of the recycling tank (1), a waste discharge port (12) is provided below the outer surface of the recycling tank (1), and a grinding liquid discharge port (13) is provided at the axis at the bottom of the recycling tank (1). The inlet (11), waste discharge port (12) and grinding liquid discharge port (13) are all connected to the interior of the recycling tank (1). The filtration mechanism (2) includes a hollow filter element. The bottom of the filter element is in close contact with the inner bottom of the recycling tank (1). The filter element is placed inside the recycling tank (1) and is concentrically arranged with the recycling tank (1). The hollow cavity of the grinding liquid discharge port (13) covers the grinding liquid discharge port (13). A sealing plate (24) is provided on the top of the filter element. The sealing plate (24) seals the upper opening of the recycling tank (1). A driving component (25) is installed on the sealing plate (24). A stirring component (26) is provided at the output end of the driving component (25). The stirring component (26) extends into the interior of the filter element.

2. The self-cleaning and wastewater discharge filtration device for grinding fluid according to claim 1, characterized in that: The filter element includes a connecting cylinder (21), and a filter screen (23) is provided on the top of the connecting cylinder (21). The inner and outer diameters of the connecting cylinder (21) and the filter screen (23) are the same. A gap is left between the outer surface of the connecting cylinder (21) and the interior of the recycling tank (1). The sealing plate (24) is installed on the top of the filter screen (23).

3. The self-cleaning and wastewater discharge filtration device for grinding fluid according to claim 2, characterized in that: The outer surface of the connecting cylinder (21) is provided with external threads (22); The bottom of the recycling tank (1) is provided with a filter device mounting part (14), which is connected to the external thread (22).

4. The grinding fluid self-cleaning and wastewater discharge filtration device according to claim 2, characterized in that: The stirring component (26) includes a drive rod (261), which is connected to the output end of the drive component (25). The lower end of the drive rod (261) is provided with a stirring turntable (263), the upper surface of the stirring turntable (263) is provided with an upper stirring blade (264), and the lower surface of the stirring turntable (263) is provided with a lower stirring blade (265).

5. The grinding fluid self-cleaning and wastewater discharge filtration device according to claim 4, characterized in that: The upper stirring blade (264) and the lower stirring blade (265) have opposite blade tilt directions.

6. The grinding fluid self-cleaning and wastewater discharge filtration device according to claim 4, characterized in that: A telescopic tube (262) is provided between the drive rod (261) and the stirring turntable (263), and the telescopic tube (262) can extend and retract vertically.

7. The grinding fluid self-cleaning and wastewater discharge filtration device according to claim 6, characterized in that: The outer surface of the stirring disc (263) is attached to the inner wall of the filter screen (23), dividing the interior of the filter screen (23) into upper and lower chambers.

8. The self-cleaning and wastewater discharge filtration device for grinding fluid according to claim 6, characterized in that: The inner wall of the filter screen (23) is provided with a circulation guide groove (211), the flattened cross section of the circulation guide groove (211) is W-shaped, and the side of the stirring turntable (263) is symmetrically provided with a traction member (266) with the axis of the stirring turntable (263) as a mirror axis, the traction member (266) extends into the interior of the circulation guide groove (211).

9. The grinding fluid self-cleaning and wastewater discharge filtration device according to claim 8, characterized in that: The traction component (266) includes a guide rod (2661), one end of which is connected to the outer surface of the stirring turntable (263), and the other end of which is provided with a rotatable ball (2662), the outer surface of which abuts against the inner wall of the circulation guide groove (211).

Images