Vertical sand feeding device with uniform magnetic field

Abstract

The utility model provides a vertical sand feeding device with a uniform magnetic field, and relates to the technical field of diamond wire production. The vertical sand feeding device with the uniform magnetic field comprises a carborundum hopper groove, a sand feeding pipe and a liquid inlet pipe which are sequentially connected in the vertical direction. A diamond wire bus sequentially penetrates through the liquid inlet pipe, the sand feeding pipe and the carborundum hopper groove in the vertical direction through a guide wheel arranged at the bottom of the liquid inlet pipe and penetrates out of the carborundum hopper groove. The plating solution flow guide pipes are connected to the side wall of the liquid inlet pipe; and the magnets are fixedly arranged on the outer wall of the sand feeding pipe. Thus, a plurality of magnets are fixedly arranged on the outer wall of the emery feeding pipe, a uniform magnetic field can be formed on the emery feeding pipe, and the suspension state of emery tends to be stable and uniform. And therefore, the sanding uniformity is guaranteed, the phenomenon of'white strips' is avoided, and the quality of the diamond wire is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of diamond wire production, in particular to a vertical sand feeding device with uniform magnetic field. Background Art

[0002] Diamond wire saw is a wire cutting tool that uses the electrodeposition method to fix diamond abrasive on the substrate. Electroplated diamond wire saws are widely used in silicon slicing in my country. Compared with traditional slurry cutting, their cutting efficiency and surface quality are further optimized. At present, electroplated diamond wire saws are also widely used in the cutting of non-metallic super-hard and brittle materials such as crystal, sapphire and magnetic materials.

[0003] In the prior art, there are two types of sanding for diamond wires: horizontal sanding and vertical sanding. In the vertical sanding, chemical nickel powder (corundum) is initially used, and then in the process of wire thinning, electroplating powder is used instead. Compared with chemical nickel powder, the wire diameter of electroplating powder is 3-4 microns smaller. However, in the sanding process of electroplating powder, the "white stripe" phenomenon will appear. The "white stripe" phenomenon specifically refers to the agglomeration of sand at intervals on the diamond wire. The white stripe will cause the diameter of the diamond wire to become larger, the amount of sand to be uneven, and affect the cutting quality. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a vertical sand feeding tube with uniform magnetic field, so as to solve the problem of "white stripes" appearing in the sand feeding process of electroplating micro powder and uneven vertical sand feeding.

[0005] In order to solve the above technical problems, the present utility model provides the following technical solutions:

[0006] The utility model provides a vertical sand feeding device with uniform magnetic field, the vertical sand feeding device comprising:

[0007] The diamond sand bucket trough, the sand supply pipe and the liquid inlet pipe are connected in sequence along the vertical direction;

[0008] The diamond wire busbar passes through the guide wheel arranged at the bottom of the liquid inlet pipe, passes through the liquid inlet pipe, the upper sand pipe and the diamond sand bucket groove in the vertical direction, and passes out of the diamond sand bucket groove;

[0009] A plurality of plating solution guide pipes connected to the side wall of the liquid inlet pipe;

[0010] A plurality of magnets are fixedly arranged on the outer wall of the upper sand pipe.

[0011] In some embodiments, a first reinforcement structure is provided between the diamond sand bucket groove and the upper sand pipe;

[0012] The outer diameter of the first reinforcing structure is larger than the diameter of the upper sand pipe and the diameter of the bottom of the corundum bucket groove, and along the vertical direction, the first reinforcing structure at least covers a portion of the outer wall of the corundum bucket groove and the upper sand pipe.

[0013] In some embodiments, a second reinforcement structure is provided between the upper sand pipe and the liquid inlet pipe;

[0014] The outer diameter of the second reinforcement structure is larger than the diameter of the upper sand pipe and the diameter of the liquid inlet pipe, and along the vertical direction, the second reinforcement structure at least covers a portion of the outer walls of the upper sand pipe and the liquid inlet pipe.

[0015] In some embodiments, the vertical sand feeding device further includes an exhaust pipe, and the exhaust pipe passes through the second reinforcement structure;

[0016] One end of the exhaust pipe is connected to the liquid inlet pipe, and the other end of the exhaust pipe is an open end;

[0017] The open end of the exhaust pipe is provided with a valve.

[0018] In some embodiments, the plating solution flow guide pipe is provided with a main flow guide pipe and a plurality of branch flow guide pipes, one end of the plurality of branch flow guide pipes are connected to the main flow guide pipe, and the other ends of the plurality of branch flow guide pipes are connected to the liquid inlet pipe.

[0019] In some embodiments, the branch flow guide pipes include 2;

[0020] One end of the two branch flow guide pipes away from the main flow guide pipe is connected to the opposite sides of the liquid inlet pipe respectively.

[0021] In some embodiments, a plurality of magnets are bonded to the outer wall of the upper sand pipe.

[0022] In some embodiments, an annular magnet slot is circumferentially arranged on the outer wall of the upper sand pipe, and a plurality of positions adapted to the magnets are arranged on the magnet slot.

[0023] In some embodiments, the magnet is in the shape of a block or a semi-arc.

[0024] In some embodiments, the magnet is a strong magnet.

[0025] Compared with the prior art, the utility model provides a vertical sanding device with uniform magnetic field, which includes: a diamond sand bucket trough, a sanding tube and a liquid inlet pipe connected in sequence along the vertical direction; the diamond wire busbar passes through the liquid inlet pipe, the sanding tube and the diamond sand bucket trough in sequence along the vertical direction through a guide wheel arranged at the bottom of the liquid inlet pipe, and passes through the diamond sand bucket trough; a number of plating liquid guide pipes are connected to the side wall of the liquid inlet pipe; a number of magnets are fixedly arranged on the outer wall of the sanding tube. In this way, a number of magnets are fixedly arranged on the outer wall of the sanding tube, which can form a uniform magnetic field in the sanding tube, so that the suspension state of the diamond sand tends to be stable and uniform. In this way, the uniformity of the sanding is guaranteed, the occurrence of the "white strip" phenomenon is avoided, and the quality of the diamond wire is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0027] Figure 1 The schematic diagram of the structure of the vertical sand feeding device with uniform magnetic field is shown schematically;

[0028] Figure 2 The schematic diagram of the structure of the plating solution guide pipe is schematically shown;

[0029] Figure 3 The schematic diagram of the structure of the magnet on the outer wall of the upper sand pipe is shown schematically.

[0030] Description of reference numerals:

[0031] 1. Diamond sand bucket trough; 2. Sand supply pipe; 3. Liquid inlet pipe; 4. Diamond wire busbar; 5. Guide wheel; 6. Plating solution guide pipe; 61. Main guide pipe; 62. Branch guide pipe; 7. Magnet; 8. First reinforcement structure; 9. Second reinforcement structure; 10. Exhaust pipe; 11. Valve. DETAILED DESCRIPTION

[0032] The following is a further detailed description of the implementation of the utility model in conjunction with the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the utility model, but cannot be used to limit the scope of the utility model. The utility model can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0033] A vertical sand feeding device with uniform magnetic field in an embodiment of the utility model is described in detail below.

[0034] See also Figure 1 As shown, Figure 1 The structural diagram of a vertical sand-feeding device with uniform magnetic field is schematically shown. The embodiment of the utility model proposes a vertical sand-feeding device with uniform magnetic field. The vertical sand-feeding device with uniform magnetic field includes:

[0035] A diamond sand bucket 1, a sand supply pipe 2 and a liquid inlet pipe 3 are connected in sequence along the vertical direction;

[0036] The diamond wire busbar 4 passes through the guide wheel 5 arranged at the bottom of the liquid inlet pipe 3, passes through the liquid inlet pipe 3, the upper sand pipe 2 and the diamond sand bucket 1 in the vertical direction, and passes out of the diamond sand bucket 1;

[0037] A plurality of plating solution guide pipes 6 connected to the side wall of the liquid inlet pipe 3;

[0038] A plurality of magnets 7 are fixedly arranged on the outer wall of the upper sand pipe 2 .

[0039] Specifically, the corundum hopper 1 is filled with corundum.

[0040] It can be understood that the corundum in the corundum bucket 1 drops into the upper sand tube 2 under the action of gravity, and the plating liquid is continuously pumped in from the side wall of the liquid inlet pipe 3 connected to the plating liquid guide pipe 6. The pumped in plating liquid has a certain pressure, and the pressure impacts into the upper sand tube 2, so that the corundum in the upper sand tube 2 is in a suspended state. The guide wheel 5 adjusts the conductive diamond wire busbar 4 from the horizontal direction to the vertical direction, and moves the conductive diamond wire busbar 4 upward, passing through the liquid inlet pipe 3, the upper sand tube 2 and the corundum bucket 1 in turn. In the upper sand tube 2, electroplating sand is carried out. A number of magnets 7 fixedly arranged on the outer wall of the upper sand tube 2 can form a uniform magnetic field in the upper sand tube 2, so that the suspended state of the corundum tends to be stable and uniform.

[0041] In this embodiment, a first reinforcing structure 8 is arranged between the corundum hopper groove 1 and the upper sand pipe 2; the outer diameter of the first reinforcing structure 8 is larger than the diameter of the upper sand pipe 2 and the diameter of the bottom of the corundum hopper groove 1, and along the vertical direction, the first reinforcing structure 8 at least partially covers the outer walls of the corundum hopper groove 1 and the upper sand pipe 2.

[0042] Specifically, the material of the first reinforcement structure 8 can be plastic material. The first reinforcement structure 8 is used to fix the diamond sand bucket 1 and the upper sand pipe 2, and enhance the fixing strength of the diamond sand bucket 1 and the upper sand pipe 2.

[0043] The outer diameter of the first reinforcing structure 8 is greater than the diameter of the upper sand pipe 2, the outer diameter of the first reinforcing structure 8 is greater than the diameter of the bottom of the corundum hopper groove 1, and the first reinforcing structure 8 at least partially covers the outer wall of the corundum hopper groove 1 and the upper sand pipe 2 in the vertical direction, so as to ensure that the first reinforcing structure 8 is set at the bottom of the corundum hopper groove 1 and the outside of the upper sand pipe 2 to achieve a fixed connection between the corundum hopper groove 1 and the upper sand pipe 2.

[0044] In the vertical direction, the first reinforcement structure 8 at least covers part of the outer wall of the corundum bucket 1 and the upper sand pipe 2. Specifically, in the vertical direction, the first reinforcement structure 8 can cover part of the outer wall of the corundum bucket 1 and the upper sand pipe 2. In the vertical direction, the first reinforcement structure 8 can also cover part of the outer wall of the corundum bucket 1 and the entire upper sand pipe 2. Preferably, in the vertical direction, the first reinforcement structure 8 covers part of the outer wall of the corundum bucket 1 and the upper sand pipe 2, so that the manufacturing cost of the first reinforcement structure 8 can be saved.

[0045] The first reinforcing structure 8 is in the shape of a cylinder or a cuboid with two openings, and the two openings are respectively on the upper surface and the lower surface of the cylinder or the cuboid. The opening on the upper surface of the cylinder or the cuboid is adapted to the pipe diameter at the bottom of the diamond sand bucket trough 1, and the opening on the lower surface of the cylinder or the cuboid is adapted to the pipe diameter of the upper sand pipe 2.

[0046] The cylindrical first reinforcing structure 8 can be an integral type, or it can be formed by splicing a circular ring-shaped surface and a cylinder without an upper surface, and the lower surface of the cylinder without an upper surface has an opening, the circular ring-shaped surface is adapted to the size of the cylinder without an upper surface, the circular ring-shaped surface and the cylinder without an upper surface are detachably connected, the opening on the lower surface is adapted to the diameter of the upper sand pipe 2, and the inner ring of the circular ring-shaped surface is adapted to the diameter of the bottom of the corundum bucket groove 1.

[0047] The first reinforcing structure 8 in the shape of a rectangular parallelepiped can be an integrated type, or it can be formed by splicing a rectangular annular surface and a rectangular parallelepiped without an upper surface, and the lower surface of the rectangular parallelepiped without an upper surface has an opening, the rectangular annular surface is adapted to the size of the rectangular parallelepiped without an upper surface, the rectangular annular surface and the rectangular parallelepiped without an upper surface are detachably connected, the opening on the lower surface is adapted to the diameter of the upper sand pipe 2, and the inner ring of the rectangular annular surface is adapted to the diameter of the bottom of the corundum hopper groove 1.

[0048] The detachable connection between the circular ring-shaped surface and the cylinder without an upper surface, and the detachable connection between the rectangular ring-shaped surface and the cuboid without an upper surface, can be a threaded connection or a snap connection. The detachable connection can be set according to specific needs and is not limited here.

[0049] In this embodiment, a second reinforcement structure 9 is arranged between the upper sand pipe 2 and the liquid inlet pipe 3; the outer diameter of the second reinforcement structure 9 is larger than the diameter of the upper sand pipe 2 and the diameter of the liquid inlet pipe 3, and along the vertical direction, the second reinforcement structure 9 at least partially covers the outer walls of the upper sand pipe 2 and the liquid inlet pipe 3.

[0050] Specifically, the material of the second reinforcement structure 9 can be plastic material. The second reinforcement structure 9 is used to fix the upper sand pipe 2 and the liquid inlet pipe 3, and enhance the fixing strength of the upper sand pipe 2 and the liquid inlet pipe 3.

[0051] The outer diameter of the second reinforcing structure 9 is greater than the diameter of the upper sand pipe 2, the outer diameter of the second reinforcing structure 9 is greater than the diameter of the liquid inlet pipe 3, and the second reinforcing structure 9 at least covers part of the outer wall of the upper sand pipe 2 and the liquid inlet pipe 3 in the vertical direction, so as to ensure that the second reinforcing structure 9 is arranged outside the upper sand pipe 2 and the liquid inlet pipe 3 to realize the fixed connection between the upper sand pipe 2 and the liquid inlet pipe 3.

[0052] In the vertical direction, the second reinforcement structure 9 at least covers part of the outer wall of the upper sand pipe 2 and the liquid inlet pipe 3. Specifically, in the vertical direction, the second reinforcement structure 9 can cover part of the outer wall of the upper sand pipe 2 and the liquid inlet pipe 3; in the vertical direction, the second reinforcement structure 9 can also cover part of the outer wall of the upper sand pipe 2 and the entire outer wall of the liquid inlet pipe 3; in the vertical direction, the second reinforcement structure 9 can also cover the entire upper sand pipe 2 and part of the outer wall of the liquid inlet pipe 3; in the vertical direction, the second reinforcement structure 9 can also cover the entire upper sand pipe 2 and the entire outer wall of the liquid inlet pipe 3. Preferably, in the vertical direction, the second reinforcement structure 9 covers part of the outer wall of the upper sand pipe 2 and the liquid inlet pipe 3, so that the manufacturing cost of the second reinforcement structure 9 can be saved.

[0053] The second reinforcing structure 9 is in the shape of a cylinder or a cuboid with two openings, and the two openings are respectively on the upper surface and the lower surface of the cylinder or the cuboid. The opening on the upper surface of the cylinder or the cuboid is adapted to the diameter of the upper sand pipe 2, and the opening on the lower surface of the cylinder or the cuboid is adapted to the diameter of the liquid inlet pipe 3.

[0054] The cylindrical second reinforcement structure 9 can be an integral type, or it can be composed of an annular surface and a cylinder without an upper surface, and the lower surface of the cylinder without an upper surface has an opening, the annular surface is adapted to the size of the cylinder without an upper surface, the annular surface and the cylinder without an upper surface are detachably connected, the opening on the lower surface is adapted to the diameter of the liquid inlet pipe 3, and the inner ring of the annular surface is adapted to the diameter of the upper sand pipe 2.

[0055] The second reinforcing structure 9 in the shape of a rectangular parallelepiped can be an integrated type, or it can be formed by splicing a rectangular annular surface and a rectangular parallelepiped without an upper surface, and the lower surface of the rectangular parallelepiped without an upper surface has an opening, the rectangular annular surface is adapted to the size of the rectangular parallelepiped without an upper surface, the rectangular annular surface and the rectangular parallelepiped without an upper surface are detachably connected, the opening on the lower surface is adapted to the diameter of the liquid inlet pipe 3, and the inner ring of the rectangular annular surface is adapted to the diameter of the upper sand pipe 2.

[0056] The detachable connection between the circular ring-shaped surface and the cylinder without an upper surface, and the detachable connection between the rectangular ring-shaped surface and the cuboid without an upper surface, can be a threaded connection or a snap connection. The detachable connection can be set according to specific needs and is not limited here.

[0057] In this embodiment, the vertical sand loading device also includes an exhaust pipe 10, which runs through the second reinforcement structure 9; one end of the exhaust pipe 10 is connected to the liquid inlet pipe 3, and the other end of the exhaust pipe 10 is an open end; a valve 11 is provided at the open end of the exhaust pipe 10.

[0058] It is understandable that during the sand loading process, the valve 11 at the open end of the exhaust pipe 10 needs to be closed, the sand loading is stopped, and the entire production line needs to be cleaned. The valve 11 at the open end of the exhaust pipe 10 can be opened to release the original liquid from the open end.

[0059] In this embodiment, the plating solution flow conduit 6 is provided with a main flow conduit 61 and a plurality of branch flow conduits 62 , one end of each of the branch flow conduits 62 is connected to the main flow conduit 61 , and the other end of each of the branch flow conduits 62 is connected to the liquid inlet pipe 3 .

[0060] In this embodiment, the sub-flow pipes 62 include two; ends of the two sub-flow pipes 62 away from the main flow pipe 61 are respectively connected to opposite sides of the liquid inlet pipe 3 .

[0061] Specifically, when the plurality of branch flow conduits 62 includes two, two openings are provided on the liquid inlet pipe 3, and the two openings are provided on opposite sides of the liquid inlet pipe 3. Through the two openings, one end of the two branch flow conduits 62 away from the main flow conduit 61 is connected to the liquid inlet pipe 3, and one end of the two branch flow conduits 62 can be connected to the main flow conduit 61 through a three-way joint. One end of the main flow conduit 61 can be connected to one end of the two branch flow conduits 62 through a three-way joint, and one end of the main flow conduit 61 away from the two branch flow conduits 62 is connected to the plating solution storage barrel. The plating solution in the plating solution storage barrel can be introduced through the main flow conduit 61, and the plating solution is then introduced into the two branch flow conduits 62 through the three-way joint, and is pumped in from opposite sides of the liquid inlet pipe 3.

[0062] Figure 2 The schematic diagram of the structure of the plating solution guide tube is shown schematically, see Figure 2 As shown, when the plurality of branch flow conduits 62 includes two, one end of the two branch flow conduits 62 is connected to the main flow conduit 61 , and one end of the two branch flow conduits 62 away from the main flow conduit 61 is connected to opposite sides of the liquid inlet pipe 3 .

[0063] In this embodiment, a plurality of magnets 7 are bonded to the outer wall of the upper sand pipe 2 .

[0064] Specifically, the plurality of magnets 7 may be bonded to the outer wall of the upper sand tube 2 by evenly fixing the magnets 7 to the outer wall of the upper sand tube 2 through an adhesive, or may be evenly fixed to the outer wall of the upper sand tube 2 through an adhesive tape.

[0065] In this embodiment, an annular magnet 7 retaining groove is circumferentially arranged on the outer wall of the upper sand pipe 2 , and a plurality of retaining positions matched with the magnet 7 are arranged on the magnet 7 retaining groove.

[0066] Specifically, the latching position is used to attach or remove the magnet 7 according to production conditions.

[0067] The magnet 7 can be evenly fixed on part of the outer wall of the upper sand tube 2, or on the entire outer wall of the upper sand tube 2. Preferably, the magnet 7 is fixed on the entire outer wall of the upper sand tube 2, so that the magnetic field of the magnet 7 is more uniform, thereby making the suspension state of the corundum more uniform.

[0068] In this embodiment, the shape of the magnet 7 is block-shaped or semi-arc-shaped.

[0069] In this embodiment, the magnet 7 is a strong magnet 7 .

[0070] Specifically, when the shape of the magnet 7 is block-shaped, the number of the magnets 7 can be multiple, and the multiple block-shaped magnets 7 are evenly arranged on the outer wall of the upper sand tube 2; when the shape of the magnet 7 is semi-arc-shaped, the number of the magnets 7 can be two, and the two semi-arc-shaped magnets 7 are relatively arranged. Preferably, the shape of the magnet 7 is semi-arc-shaped, and the semi-arc-shaped magnet 7 fits more closely with the outer wall of the upper sand tube 2, so that the magnetic field of the magnet 7 is more uniform, and then the suspension state of the corundum is more uniform. The magnet 7 is a strong magnet 7 that can generate a stronger magnetic field, making the suspension state of the corundum more uniform and stable.

[0071] Figure 3 The schematic diagram of the structure of the magnet on the outer wall of the upper sand pipe is shown schematically, see Figure 3 As shown, two semi-arc magnets 7 are fixed on part of the outer wall of the upper sand tube 2. The semi-arc magnets 7 are more closely fitted to the outer wall of the upper sand tube 2, so that the magnetic field of the magnets 7 is more uniform, thereby making the suspension state of the diamond sand more uniform.

[0072] The vertical sanding device with uniform magnetic field of the embodiment of the utility model comprises: a diamond sand bucket trough 1, a sanding tube 2 and a liquid inlet pipe 3 connected in sequence in the vertical direction; a diamond wire busbar 4 passes through the liquid inlet pipe 3, the sanding tube 2 and the diamond sand bucket trough 1 in sequence in the vertical direction through a guide wheel 5 arranged at the bottom of the liquid inlet pipe 3, and passes through the diamond sand bucket trough 1; a plurality of plating liquid guide pipes 6 are connected to the side wall of the liquid inlet pipe 3; a plurality of magnets 7 are fixedly arranged on the outer wall of the sanding tube 2. In this way, a plurality of magnets 7 are fixedly arranged on the outer wall of the sanding tube 2, so that a uniform magnetic field can be formed in the sanding tube 2, so that the suspension state of the diamond sand tends to be stable and uniform. In this way, the uniformity of the sanding is guaranteed, the occurrence of the "white strip" phenomenon is avoided, and the quality of the diamond wire is improved.

[0073] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

[0074] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A vertical sand feeding device with uniform magnetic field, characterized in that: The vertical sand feeding device comprises: The diamond sand bucket trough, the sand supply pipe and the liquid inlet pipe are connected in sequence along the vertical direction; The diamond wire busbar passes through the guide wheel arranged at the bottom of the liquid inlet pipe, passes through the liquid inlet pipe, the upper sand pipe and the diamond sand bucket groove in the vertical direction, and passes out of the diamond sand bucket groove; A plurality of plating solution guide pipes connected to the side walls of the liquid inlet pipe; A plurality of magnets are fixedly arranged on the outer wall of the upper sand pipe.

2. The vertical sand feeding device according to claim 1, characterized in that: A first reinforcement structure is provided between the diamond sand bucket groove and the upper sand pipe; The outer diameter of the first reinforcing structure is larger than the diameter of the upper sand pipe and the diameter of the bottom of the corundum bucket groove, and along the vertical direction, the first reinforcing structure at least partially covers the outer wall of the corundum bucket groove and the upper sand pipe.

3. The vertical sand feeding device according to claim 1, characterized in that: A second reinforcement structure is provided between the upper sand pipe and the liquid inlet pipe; The outer diameter of the second reinforcement structure is larger than the diameter of the upper sand pipe and the diameter of the liquid inlet pipe, and along the vertical direction, the second reinforcement structure at least partially covers the outer walls of the upper sand pipe and the liquid inlet pipe.

4. The vertical sand feeding device according to claim 3, characterized in that: The vertical sand feeding device further comprises an exhaust pipe, and the exhaust pipe passes through the second reinforcement structure; One end of the exhaust pipe is connected to the liquid inlet pipe, and the other end of the exhaust pipe is an open end; The open end of the exhaust pipe is provided with a valve.

5. The vertical sand feeding device according to claim 1, characterized in that: The plating solution flow guide pipe is provided with a main flow guide pipe and a plurality of branch flow guide pipes, one end of the plurality of branch flow guide pipes are connected to the main flow guide pipe, and the other ends of the plurality of branch flow guide pipes are connected to the liquid inlet pipe.

6. The vertical sand feeding device according to claim 5, characterized in that: The branch flow guide pipes include 2; One end of the two branch flow guide pipes away from the main flow guide pipe is respectively connected to the opposite sides of the liquid inlet pipe.

7. The vertical sand feeding device according to claim 1, characterized in that: A plurality of magnets are bonded to the outer wall of the upper sand pipe.

8. The vertical sand feeding device according to claim 1, characterized in that: An annular magnet clamping groove is circumferentially arranged on the outer wall of the upper sand pipe, and a plurality of clamping positions matched with the magnet are arranged on the magnet clamping groove.

9. The vertical sand feeding device according to claim 1, characterized in that: The magnet is in the shape of a block or a semi-arc.

10. The vertical sand feeding device according to claim 1, characterized in that: The magnet is a strong magnet.

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