Iron removal device for circulating grinding fluid

Abstract

This utility model discloses an iron removal device for circulating grinding fluid, belonging to the field of grinding fluid iron removal technology. The device includes a return tank, a supply pipe, a return pipe, and three-stage magnetic iron collecting blocks. A secondary magnetic iron collecting block is tangentially installed at the bottom of the return tank, and a stirring assembly is installed inside the tank. The return pipe and supply pipe are respectively equipped with primary and tertiary magnetic iron collecting blocks, each with a hollow groove. During operation, the grinding fluid undergoes primary iron removal through the return pipe and then enters the return tank. Secondary iron removal occurs during stirring, followed by tertiary iron removal through the supply pipe before being supplied to the equipment, forming a closed-loop purification process. The advantages are: the three-stage magnetic adsorption greatly improves the iron filings removal effect; the detachable structure facilitates maintenance; the pipe diameter difference and included angle design enhance iron filings capture efficiency; and the stirring strengthens the separation of iron filings within the tank, ultimately reducing the iron content of the grinding fluid, improving product qualification rate, and increasing processing accuracy.

Description

Technical Field

[0001] This utility model relates to the technical field of iron removal from grinding fluid, specifically an iron removal device for circulating grinding fluid. Background Technology

[0002] In high-precision grinding of non-metallic materials such as quartz plates, the grinding fluid needs to be recycled to reduce costs. In traditional processes, cast iron grinding discs generate iron filings during processing, which mix into the grinding fluid, leading to continuous accumulation of iron filings. This not only reduces the concentration of effective abrasive in the grinding fluid but also causes surface scratches, decreased processing accuracy, and lower yield. Existing technologies lack efficient iron removal methods, and the accumulation of iron filings easily leads to grinding fluid failure, requiring frequent replacement and increasing production costs. Although some solutions use magnetic filtration, most are single-stage designs and cannot completely remove iron filings from the circulation system, especially the fine iron filings suspended in the return tank due to agitation. Utility Model Content

[0003] The purpose of this invention is to provide an iron removal device for circulating grinding fluid, which reduces the presence of impurities in the grinding fluid, extends the service life of the grinding fluid, improves equipment efficiency, and reduces the frequency of abrasive replacement operations.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an iron removal device for circulating grinding fluid, comprising:

[0005] The return tank is equipped with an internal stirring component;

[0006] The return pipe connects the grinding area of ​​the equipment to the return tank;

[0007] A liquid supply pipe connects the grinding area of ​​the equipment to the return liquid tank via a water pump;

[0008] The return pipe is provided with a primary magnetic iron collecting block along the return direction; the return tank is provided with a secondary magnetic iron collecting block along the tangent of the tank wall at the bottom; and the supply pipe is provided with a tertiary magnetic iron collecting block along its length.

[0009] The system employs a return pipe in conjunction with a primary magnetic iron collecting block for primary adsorption, a return tank and a secondary magnetic iron collecting block for secondary adsorption, and a supply pipe in conjunction with a tertiary magnetic iron collecting block for tertiary adsorption. This system covers the entire grinding fluid circulation process, improving the iron filings removal rate, solving the problem of incomplete traditional single-stage filtration, and reducing product scratch rate.

[0010] In a further technical solution, the primary magnetic iron collecting block, the secondary magnetic iron collecting block, and the tertiary magnetic iron collecting block are all provided with hollow grooves for collecting iron filings.

[0011] The hollow groove can collect iron filings, and the hollow groove can be cleaned regularly to avoid the adsorption efficiency decay caused by iron filings saturation.

[0012] A further technical solution involves installing a stirring device on the return tank. The stirring device includes a stirring motor fixed on the return tank, a stirring shaft connected to the bottom of the stirring motor, and stirring blades fixed to the bottom end of the stirring shaft.

[0013] The stirring motor drives the blades to rotate and form a vortex, which forces the iron filings to gather towards the secondary magnetic blocks tangential to the barrel wall, improving the iron removal efficiency inside the barrel. Especially for suspended fine iron filings, the iron filings suspended on the surface can be submerged after stirring, making it easier for the secondary magnetic iron collecting blocks to adsorb them.

[0014] In a further technical solution, two primary magnetic iron collecting blocks are symmetrically and obliquely installed on both sides of the horizontal axis of the return pipe, and the hollow groove of the primary magnetic iron collecting block is kept horizontal in the axial direction, and the two primary magnetic iron collecting blocks form an angle structure that gradually narrows along the flow direction of the grinding fluid.

[0015] The primary magnetic block is symmetrically tilted at 30° to form a gradually narrowing flow channel, which increases the contact area and residence time between the iron filings and the magnetic field, thereby improving the iron filings capture rate of the return pipe.

[0016] In a further technical solution, two of the three-stage magnetic iron collecting blocks are symmetrically and obliquely installed on both sides of the horizontal axis of the liquid supply pipe, and the hollow groove of the three-stage magnetic iron collecting blocks remains horizontal in axis, and the two three-stage magnetic iron collecting blocks form an included angle structure that gradually narrows along the flow direction of the grinding liquid.

[0017] Increasing the contact area and residence time between iron filings and the magnetic field improves the iron filings capture rate of the liquid supply pipe.

[0018] In a further technical solution, the diameter of the supply pipe is smaller than the diameter of the return pipe.

[0019] The pipe diameter and magnetic block size are customized according to the equipment's flow rate and accuracy requirements to adapt to different viscosity grinding fluids and processing requirements.

[0020] In a further technical solution, the primary magnetic iron collecting block is detachably and fixedly installed on the return liquid pipe, the secondary magnetic iron collecting block is detachably and fixedly installed on the return liquid tank, and the tertiary magnetic iron collecting block is detachably and fixedly installed on the supply liquid pipe.

[0021] The detachable design, such as threaded tightening and clamp connection, improves the ease of installation, while reducing the time required to clean the magnetic blocks and making maintenance more convenient.

[0022] In a further technical solution, the connection end of the return pipe to the grinding zone of the equipment is located below the working surface of the grinding disc.

[0023] The return pipe inlet is located below the grinding disc, and the grinding fluid containing iron filings is naturally returned by gravity, reducing energy consumption.

[0024] In a further technical solution, several three-stage magnetic iron collecting blocks are arranged along the length of the liquid supply pipe, and the several three-stage magnetic iron collecting blocks are evenly distributed.

[0025] Multiple three-stage magnetic blocks are evenly distributed in the liquid supply pipe to form a multi-stage interception and improve the iron removal rate.

[0026] In a further technical solution, several primary magnetic iron collecting blocks are arranged along the length of the return pipe, and the several primary magnetic iron collecting blocks are evenly spaced.

[0027] Multiple primary magnetic iron-collecting blocks form a multi-stage interception system, improving the iron removal rate.

[0028] In summary, this utility model has the following beneficial effects: through three-stage synergistic iron removal—first stage through the return pipe, second stage through the return tank, and third stage through the supply pipe—the magnetic iron collecting blocks adsorb the iron filings step by step, thereby improving the iron filings removal rate, reducing iron filings scratches, and increasing the product qualification rate.

[0029] The primary and tertiary magnetic iron collecting blocks are set at an angle to increase the contact area and residence time between the iron filings and the magnetic field, thereby improving the iron filings capture rate.

[0030] A stirring mechanism is installed inside the return tank, which, together with the secondary magnetic iron collecting blocks, is set along the tangential direction to enhance the adsorption of suspended fine iron filings and further improve the iron removal efficiency inside the tank.

[0031] The detachable design of the primary magnetic iron collecting blocks facilitates installation and subsequent cleaning, improving maintenance efficiency. Attached Figure Description

[0032] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0033] Figure 1 This is a first three-dimensional structural schematic diagram of the present invention;

[0034] Figure 2 This is a second perspective view of the present invention;

[0035] Figure 3 This is the front view of this utility model;

[0036] Figure 4 This is a cross-sectional view of the hollow groove of this utility model;

[0037] Figure 5 This is a three-dimensional structural schematic diagram of Embodiment 3 of this utility model.

[0038] In the diagram: 1. Return liquid tank; 2. Return liquid pipe; 3. Supply liquid pipe; 4. Primary magnetic iron collecting block; 5. Secondary magnetic iron collecting block; 6. Tertiary magnetic iron collecting block; 7. Stirring motor; 8. Stirring shaft; 9. Stirring blades; 10. Top cover; 11. Return liquid space; 12. Hollow groove. Detailed Implementation

[0039] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0041] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] Example 1:

[0045] like Figures 1-4 As shown, this embodiment provides an iron removal device for circulating grinding fluid, comprising:

[0046] A return liquid tank 1 has a fixed bracket welded to its bottom. A return liquid space 11 is provided inside the return liquid tank 1. A top cover 10, which is circular, is fixed to the top of the return liquid tank 1 to seal it. To facilitate demonstration of the internal structure of the return liquid tank 1, the following is attached... Figure 1 and attached Figure 2 In the middle, part of the top cover 10 is cut off to show the structure inside the return liquid tank 1. The return liquid tank 1 is equipped with a stirring device, which includes a stirring motor 7 fixed to the top of the top cover 10. The output end of the stirring motor 7 is powered by a vertically arranged stirring shaft 8. The stirring shaft 8 extends into the return liquid space 11, and the bottom end of the stirring shaft 8 is fixed with stirring blades 9.

[0047] The return pipe 2 is made of DN50 stainless steel. The inlet end is connected to the drain port below the grinding disc of the double-sided grinder, and the outlet end is connected to the top of the return tank 1.

[0048] The supply pipe 3 is made of DN40 stainless steel pipe with a smaller diameter than the return pipe. The inlet end is connected to the bottom of the return tank 1 via a water pump, and the outlet end is connected to the grinding disc spray nozzle.

[0049] Magnetic iron filings collection blocks: including a primary magnetic iron filings collection block 4, a secondary magnetic iron filings collection block 5, and a tertiary magnetic iron filings collection block 6; and each of the primary magnetic iron filings collection block 4, the secondary magnetic iron filings collection block 5, and the tertiary magnetic iron filings collection block 6 is provided with a hollow groove 12 for collecting iron filings. The structure of the hollow grooves inside the magnetic iron filings collection blocks can be referred to as Figure 4 .

[0050] Primary magnetic iron collecting block 4: The material is neodymium iron boron magnet. Two primary magnetic iron collecting blocks 4 are symmetrically and obliquely installed on both sides of the horizontal axis of the return pipe 2. The hollow groove of the primary magnetic iron collecting block 4 is kept horizontal in axis, and the two primary magnetic iron collecting blocks 4 form an angle structure that gradually narrows along the flow direction of the grinding fluid. In this embodiment, the included angle between the two primary magnetic iron collecting blocks 4 is 60°. They are welded to both sides of the horizontal axis of the return pipe 2. The included angle between a single primary magnetic iron collecting block 4 and the horizontal axis of the return pipe 2 is 30°.

[0051] Secondary magnetic iron collecting block 5: Installed at the lower part of the return liquid tank 1, along the tangential direction of the tank wall of the return liquid tank 1, such as... Figure 1 and Figure 2 As shown.

[0052] Three-stage magnetic iron collecting blocks 6: Two three-stage magnetic iron collecting blocks 6 are symmetrically and obliquely installed on both sides of the horizontal axis of the liquid supply pipe 3, and the hollow groove of the three-stage magnetic iron collecting blocks 6 is kept horizontal in the axial direction. The two three-stage magnetic iron collecting blocks 6 form an angle structure that gradually narrows along the flow direction of the grinding liquid. In this embodiment, the included angle between the two three-stage magnetic iron collecting blocks 6 is 60°. They are welded to both sides of the horizontal axis of the liquid supply pipe 3, and the included angle between a single three-stage magnetic iron collecting block 6 and the horizontal axis of the liquid supply pipe 3 is 30°.

[0053] Example 2 differs from Example 1 in that the primary magnetic iron collecting block 4 is detachably fixedly installed on the return liquid pipe 2, the secondary magnetic iron collecting block 5 is detachably fixedly installed on the return liquid tank 1, and the tertiary magnetic iron collecting block 6 is detachably fixedly installed on the supply liquid pipe 3, instead of being welded and fixed as in Example 1.

[0054] Specifically, mounting holes can be machined on the return pipe 2, the supply pipe 3, and the bottom of the axial side of the return tank 1. The mounting holes are tapped with threads. The primary magnetic iron collecting block 4, the secondary magnetic iron collecting block 5, and the tertiary magnetic iron collecting block 6 are provided with threads that match the threads of the mounting holes, so that the primary magnetic iron collecting block 4 can be screwed into the mounting hole on the return pipe 2, the secondary magnetic iron collecting block 5 can be screwed into the mounting hole on the return tank 1, and the tertiary magnetic iron collecting block 6 can be screwed into the mounting hole on the supply pipe 3.

[0055] The purpose of this design is twofold: firstly, to facilitate installation, and secondly, to enable quick disassembly and cleaning of the hollow grooves inside the primary magnetic iron collecting block 4, the secondary magnetic iron collecting block 5, and the tertiary magnetic iron collecting block 6.

[0056] Example 3:

[0057] This embodiment can be based on Embodiment 1 and Embodiment 2 by increasing the number of primary magnetic iron collecting blocks 4, secondary magnetic iron collecting blocks 5, and tertiary magnetic iron collecting blocks 6. For example, the primary magnetic iron collecting blocks 4 and the tertiary magnetic iron collecting blocks 6 can be evenly distributed in two groups, thereby improving the filtration effect. Figure 5 As shown.

[0058] Example 4:

[0059] The difference between this embodiment and embodiment two is that protruding circular mounting openings are pre-processed and welded on the return pipe 2, return tank 1 and supply pipe 3. The primary magnetic iron collecting block 4, the secondary magnetic iron collecting block 5 and the tertiary magnetic iron collecting block 6 are respectively locked onto the return pipe 2, return tank 1 and supply pipe 3 by clamps.

[0060] Example 5:

[0061] The difference between this embodiment and Embodiment 1 is that, for grinding slurries with different viscosities, the diameters of the return pipe 2 and the supply pipe 3 are changed. For example, the diameter of the return pipe 2 is expanded to DN65, while the supply pipe 3 remains at DN40, forming a difference in supply and return flow rates to adapt to grinding slurries with different viscosities.

[0062] Example 6:

[0063] The difference between this embodiment and Embodiment 1 is that the stirring blade 9 is replaced with a turbine disc to increase the vortex intensity and increase the number of secondary magnetic iron collecting blocks, thereby improving the iron removal effect.

[0064] Workflow:

[0065] The grinding fluid flows back from the grinding disc through the return pipe 2 by gravity. When it flows through the primary magnetic iron collecting block 4, the iron filings are attracted and captured by the primary magnetic iron collecting block 4 and enter the hollow groove 12 inside the primary magnetic iron collecting block 4.

[0066] After the grinding slurry continues to enter the return tank 1, the stirring motor 7 drives the stirring blades 9 to rotate at 120 rpm, and the secondary magnetic iron collecting block 5 adsorbs some iron filings again.

[0067] Then the water pump delivers the purified grinding fluid to the grinding disc through the supply pipe 3, and the three-stage magnetic iron collecting block 6 adsorbs the residual iron filings again.

[0068] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0069] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0070] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. An iron removal device for circulating grinding fluid, characterized in that, include: The return tank (1) is equipped with a stirring assembly inside; The return pipe (2) connects the grinding area of ​​the equipment to the return tank (1); The liquid supply pipe (3) is connected to the grinding area of ​​the equipment and the return liquid tank (1) via a water pump; Among them, the return pipe (2) is provided with a first-level magnetic iron collecting block (4) along the return direction; the return tank (1) is provided with a second-level magnetic iron collecting block (5) along the tangent direction of the tank wall at the lower part; and the supply pipe (3) is provided with a third-level magnetic iron collecting block (6) along its length.

2. The iron removal device for circulating the polishing liquid according to claim 1, characterized in that: The primary magnetic iron collecting block (4), the secondary magnetic iron collecting block (5), and the tertiary magnetic iron collecting block (6) are all provided with hollow grooves (12) for collecting iron filings.

3. The iron removal device for circulating the polishing liquid according to claim 1, characterized in that: A stirring device is installed on the return tank (1). The stirring device includes a stirring motor (7) fixed on the return tank (1). The bottom of the stirring motor (7) is connected to a stirring shaft (8). The bottom end of the stirring shaft (8) is fixed with stirring blades (9).

4. The iron removal device for circulating the polishing liquid according to claim 1, characterized in that: Two primary magnetic iron collecting blocks (4) are symmetrically and obliquely installed on both sides of the horizontal axis of the return pipe (2), and the hollow groove of the primary magnetic iron collecting block (4) remains horizontal in axis, and the two primary magnetic iron collecting blocks (4) form an angle structure that gradually narrows along the flow direction of the grinding liquid.

5. The iron removal device for circulating the polishing liquid according to claim 1, characterized in that: Two of the three-stage magnetic iron collecting blocks (6) are symmetrically and obliquely installed on both sides of the horizontal axis of the liquid supply pipe (3), and the hollow groove of the three-stage magnetic iron collecting blocks (6) is kept horizontal in the axis, and the two three-stage magnetic iron collecting blocks (6) form an included angle structure that gradually narrows along the flow direction of the grinding liquid.

6. The iron removal device for circulating the polishing liquid according to claim 1, characterized in that: The diameter of the supply pipe (3) is smaller than the diameter of the return pipe (2).

7. The iron removal device for circulating the polishing liquid according to claim 1, characterized in that: The primary magnetic iron collecting block (4) is detachably fixedly installed on the return pipe (2), the secondary magnetic iron collecting block (5) is detachably fixedly installed on the return tank (1), and the tertiary magnetic iron collecting block (6) is detachably fixedly installed on the supply pipe (3).

8. The iron removal device for circulating the polishing liquid according to claim 1, characterized in that: The connection end of the return pipe (2) to the grinding area of ​​the equipment is located below the working surface of the grinding disc.

9. The iron removal device for circulating the polishing liquid according to claim 1, characterized in that: Several of the three-stage magnetic iron collecting blocks (6) are arranged along the length of the liquid supply pipe (3), and the several three-stage magnetic iron collecting blocks (6) are evenly distributed.

10. The iron removal device for circulating the polishing liquid according to claim 1, characterized in that: Several primary magnetic iron collecting blocks (4) are arranged along the length of the return pipe (2), and the primary magnetic iron collecting blocks (4) are evenly distributed.

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