A recovery device for diamond recovery

Abstract

The present application relates to the technical field of diamond recycling, and specifically discloses a recycling device for diamond recycling, which comprises a reaction tank and a heating plate, a plurality of coaxially arranged filter screens are installed in the reaction tank along the axial direction, the filter screens are concave structures, an installation cylinder is fixedly arranged at the center of each filter screen, the installation cylinders between adjacent two filter screens are vertically slidably connected, the installation cylinder of the uppermost filter screen is rotationally installed on the reaction tank, and an elastic member is fixedly arranged between the installation cylinders of adjacent two filter screens, and materials with different particle sizes can be distributed in different filter screens. The present application has the beneficial effects that: the materials with different particle sizes are distributed in different filter screens, the weight of the materials is greater than the elastic force of the elastic member, the lower filter screen moves downward, the three filter screens are vertically and spacedly arranged in the reaction tank, the size mixing of the materials is avoided, the materials with different particle sizes are sequentially and dispersedly arranged, the materials can be fully contacted with the solution for reaction, and the reaction completeness is improved.

Description

Technical Field

[0001] This invention relates to the field of diamond recycling technology, and more specifically to a recycling device for diamond recycling. Background Technology

[0002] Since their inception in the 1880s, diamond sawing and grinding tools have seen rapid development in the 1970s. To fully utilize the capabilities of diamond, various matrix materials have been designed to meet the requirements of tool performance, the materials being processed, and the processing methods. Metal-based diamond tools use diamond as the cutting and grinding material and metal powder as the matrix material. They are diamond products manufactured using powder metallurgy methods, through pressing, sintering, and necessary processing. These tools currently have the most variety, the largest usage, and the widest applications. The main components of metal-based diamond cutting tips are diamond, iron, nickel, copper, cobalt, tin, zinc, etc. During production and use, a large amount of waste and residual cutting tips are generated, which have recycling value.

[0003] Chinese Patent CN213802930U discloses a waste diamond tool recycling device. This recycling device includes a sedimentation tank, a mixing tank, a first conveying pump, and a filter screen. A feed pipe is provided between the outlet of the sedimentation tank and the inlet of the mixing tank. The first conveying pump is used to transport the material in the mixing tank to the filter screen. The mixing tank includes a tank body, a stirring device inside the tank, and a cleaning ring pipe arranged coaxially with the tank body. The cleaning ring pipe has several spray holes facing the inner wall of the tank. A liquid inlet pipe is connected to the cleaning ring pipe and communicates with it. A drive motor is located at the upper end of the tank body, and a lead screw is fixedly connected to the output shaft of the drive motor. A connecting plate is connected to the liquid inlet pipe, and the connecting plate is threadedly engaged with the lead screw. Compared with the prior art, this waste diamond tool recycling device can clean the diamonds adhering to the inner wall of the mixing tank, allowing the diamond particles to be recycled as much as possible and reducing diamond particle waste.

[0004] When recycling diamond from discarded cutting tools, the tools must first be crushed and then soaked in a suitable acid (such as hydrochloric acid) to dissolve the metal components. After washing with the acid water, the diamond is then filtered and collected.

[0005] However, the discarded blades after crushing are of different sizes, and when they are added to the acid solution, they will all pile up together, resulting in insufficient reaction with the acid solution and thus affecting the quality of recycling. Summary of the Invention

[0006] This invention provides a recycling device for diamond recycling, aiming to solve the technical problem in related technologies where the discarded crushed cutter heads are of different sizes and will all pile up together when added to an acid solution, resulting in insufficient reaction with the acid solution.

[0007] The present invention discloses a diamond recovery device, comprising: a reaction vessel and a heating plate. Multiple coaxially arranged filter screens are installed inside the reaction vessel along its axial direction. The filter screens have a concave structure, and a mounting cylinder is fixedly installed at the center of each filter screen. Adjacent mounting cylinders slide vertically together. The mounting cylinder of the uppermost filter screen is rotatably mounted on the reaction vessel, and an elastic element is fixedly installed between adjacent mounting cylinders. Materials of different particle sizes can be distributed within different filter screens. The filter screens have two states: open and closed. In the closed state, adjacent filter screens abut against each other. In the open state, the filter screens can slide along the axial direction of the reaction vessel. Multiple filter screens are spaced apart, and the elastic element is stretched.

[0008] Beneficial effects: Material smaller than the pores of the top filter screen falls onto the middle filter screen, and material smaller than the pores of the middle filter screen continues downwards to the bottom filter screen. Since the material falls onto the bottom two filter screens, its weight exceeds the elastic force of the elastic element. Under the influence of gravity, the bottom two filter screens move downwards respectively. Ultimately, the three filter screens are distributed vertically and horizontally within the reaction vessel, separating diamond materials of different particle sizes. The material size on each filter screen is basically the same, avoiding mixing of different particle sizes and facilitating sufficient contact and reaction between the material and the solution. Simultaneously, the vertical dispersion of the three filter screens, meaning that materials of different particle sizes are dispersed sequentially, prevents all the material from piling up together for reaction, further improving the completeness of the reaction between the solution and the material. As the solution gradually dissolves the outer metal layer of the diamond material, the material gradually becomes smaller. Therefore, when the elastic force of the elastic element is greater than the weight of the material on the filter screen, the two filter screens below begin to gradually rise and reset until the three filter screens come into contact in sequence, causing the material that has not yet fully reacted to concentrate together. In this way, the heating plates at the bottom of the three filter screens will also concentrate together. The concentrated heating area can effectively accelerate the dissolution of the material that has not yet fully reacted.

[0009] Preferably, a vertical groove is provided on the inner wall of the mounting cylinder, and a slider is fixedly provided on the outer wall of the adjacent mounting cylinder, the slider slidingly engaging in the groove.

[0010] Its effect is to ensure that adjacent mounting cylinders can slide together.

[0011] Preferably, a drive rod is fixedly installed on the uppermost mounting cylinder. The drive rod is rotatably engaged with the reaction vessel, and the upper end of the drive rod extends above the reaction vessel. A shell is installed on the top of the reaction vessel, and a motor is fixedly installed on the shell. The drive rod is connected to the output end of the motor.

[0012] Preferably, the elastic element is a spring, which is disposed inside the mounting cylinder, and the two ends of the spring are fixedly connected to two adjacent mounting cylinders.

[0013] The effect is that the weight of the material will be greater than the elastic force of the elastic element. Under the action of gravity, the two filters at the bottom will move downwards respectively, and finally the three filters will be distributed vertically and horizontally in the reaction vessel, that is, the three filters will be dispersed vertically.

[0014] Preferably, a sealing plate is provided below the filter screen, and a sliding rod is fixedly provided on the sealing plate. The sliding rod passes through the mounting cylinder and extends to the drive rod at its upper end. Openings are provided on both sides of the drive rod, and side ears are provided on the sliding rod, which are located in the openings. A lifting plate is slidably fitted on the outside of the drive rod. The inner side of the lifting plate has an annular groove, and the side ears are slidably fitted in the annular groove. Two lead screws are rotatably installed on the outer shell. The lead screws are driven by a motor and are threadedly fitted with the lifting plate.

[0015] Its effect is that when water is added to the reaction vessel for cleaning, the water falls to the bottom of the filter screen. Because the sealing plate blocks the bottom of the filter screen, the water will flow out from the filter holes on the side wall of the filter screen. The flowing water just hits the inner wall of the reaction vessel, washing away the diamonds that are adhering to the inner wall of the reaction vessel, making it easier to recycle them.

[0016] Preferably, the bottom of the sealing plate is provided with multiple stirring blades.

[0017] Its effect is that as the sealing plate continues to rotate, the stirring blades can continuously stir the solution, allowing the materials to react fully.

[0018] Preferably, it also includes a hopper, the bottom of which is connected to a feeding pipe, and an auger is installed inside the feeding pipe. The auger is driven by a motor, and the outlet of the feeding pipe faces the inlet of the reaction vessel.

[0019] Preferably, the heating plate is fixedly installed at the bottom of the filter screen.

[0020] The beneficial effects of this invention using the above technical solution are as follows: Materials of different particle sizes are distributed on different filter screens. The weight of the material is greater than the elastic force of the elastic element. Under the action of gravity, the two lower filter screens move downwards respectively. Ultimately, the three filter screens are distributed vertically and horizontally within the reaction vessel, avoiding mixing of different particle sizes. The materials of different particle sizes are dispersed sequentially, facilitating sufficient contact and reaction between the materials and the solution, further improving the sufficiency of the reaction between the solution and the materials. As the solution gradually dissolves the outer metal layer of the diamond material, the material gradually becomes smaller. The two lower filter screens gradually rise and return to their original position until all three filter screens contact each other sequentially. This concentrates the unreacted material together, and the concentrated heating area effectively accelerates the dissolution of the unreacted material, improving reaction efficiency. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention.

[0022] Figure 2 This is the front view of the present invention.

[0023] Figure 3 This is a cross-sectional view of the reaction vessel of the present invention.

[0024] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.

[0025] Figure 5 For the present invention Figure 3 Enlarged view of point B in the middle.

[0026] Figure 6 This is a schematic diagram of the filter screen in the open state of the present invention.

[0027] Figure 7 This is an exploded view of the slide bar and lifting plate of the present invention.

[0028] Figure label:

[0029] 10. Workbench; 20. Hopper; 21. Feeding pipe; 30. Reaction vessel; 31. Filter screen; 32. Mounting cylinder; 33. Drive rod; 34. Slider; 35. Elastic element; 36. Outer shell; 40. Heating plate; 50. Sealing plate; 51. Slide rod; 52. Side lug; 53. Lifting plate; 54. Receiving tank; 55. Stirring blade; 56. Lead screw. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] like Figures 1 to 7 As shown, a specific embodiment of a diamond recycling device of the present invention includes a workbench 10, a feeding assembly, a reaction tank 30, a multi-stage screening mechanism, and a sealing assembly.

[0032] The workbench 10 is located on one side of the reaction tank 30 for easy storage or addition of materials. The feeding assembly is located on the workbench 10 for adding materials into the reaction tank 30. The multi-stage screening mechanism is located inside the reaction tank 30 and can screen the materials, layering them according to their size. It also automatically adjusts the distance between each layer of materials according to their weight to facilitate a full reaction between the materials and the solution. The sealing assembly is installed inside the reaction tank 30 and allows water to flow towards the inner wall of the reaction tank 30 after the reaction is completed, washing away any residual materials on the inner wall.

[0033] like Figures 3 to 6 In this embodiment, the multi-stage screening mechanism includes three vertically arranged filter screens 31 inside the reaction tank 30. The three filter screens 31 are coaxially arranged, and each filter screen 31 has a concave structure and is covered with filter holes. The filter holes on each filter screen 31 gradually decrease in size from top to bottom. An installation cylinder 32 is fixedly arranged at the center of the inner side of each filter screen 31. The installation cylinder 32 has a bottom opening structure, and the installation cylinder 32 located on the lower filter screen 31 is slidably installed in the adjacent installation cylinder 32 above. When the material is added to the uppermost filter screen 31, it can be distributed on different filter screens 31 according to the different sizes of the material.

[0034] It is particularly important to note that in this embodiment, the number of filters 31 is 3. In other embodiments, the number of filters 31 is not limited to this, and can be 4, 5 or even more.

[0035] A drive rod 33 is fixedly installed on the uppermost mounting cylinder 32. The drive rod 33 is rotatably mounted on the reaction vessel 30, and the upper end of the drive rod 33 extends above the reaction vessel 30. A housing 36 is installed on the top of the reaction vessel 30, and a motor is fixedly installed on the housing 36. The drive rod 33 is connected to the output end of the motor, so that the motor can drive the drive rod 33 to rotate. The drive rod 33 can drive the three filter screens 31 to rotate synchronously.

[0036] Vertical grooves are provided on the inner walls of the two upper mounting cylinders 32, and sliders 34 are fixedly provided on the outer walls of the two lower mounting cylinders 32. The mounting cylinders 32 are slidably installed into the adjacent mounting cylinders 32 through the sliders 34. That is, the lowermost mounting cylinder 32 is slidably installed into the middle mounting cylinder 32, the middle mounting cylinder 32 is slidably installed into the uppermost mounting cylinder 32, and the uppermost mounting cylinder 32 only rotates and does not rise or fall.

[0037] Furthermore, an elastic element 35 is provided between each of the two adjacent mounting cylinders 32. In this embodiment, the elastic element 35 is a spring. One end of the spring is fixedly installed on the top wall inside the mounting cylinder 32, and the other end of the spring is fixedly connected to the upper surface of the mounting cylinder 32 located inside. Thus, when there is material above the filter screen 31, if the weight of the material is greater than the elastic force of the spring, the two filter screens 31 below can slide downwards in sequence.

[0038] like Figure 5 Each filter screen 31 has multiple heating plates 40 fixedly installed on its lower surface, which can uniformly heat the solution in the reaction vessel 30 and improve the reaction rate of the material on the filter screen 31.

[0039] During operation, diamond material is added to the reaction tank 30 via the feeding assembly. After the material is added, the motor drives the drive rod 33 to rotate, which in turn drives the three filter screens 31 to rotate synchronously. Material smaller than the filter holes of the uppermost filter screen 31 falls down onto the middle filter screen 31, and similarly, material smaller than the filter holes of the middle filter screen 31 continues to fall down onto the lowermost filter screen 31. Since the material falls onto the two lower filter screens 31, the weight of the material is greater than the elastic force of the elastic element 35. Under the action of gravity, the two lower filter screens 31 move downwards respectively. Finally, the three filter screens 31 are distributed vertically and horizontally within the reaction tank 30, that is, the three filter screens 31 are dispersed vertically. First, diamond material of different particle sizes is separated. The material on each filter screen 31 is basically the same size, avoiding the mixing of material sizes and facilitating the material to fully contact the solution for reaction. At the same time, the three filters 31 are dispersed vertically, meaning that materials of different particle sizes are dispersed sequentially from top to bottom, preventing all the materials from piling up together to react. This further improves the completeness of the reaction between the solution and the materials.

[0040] As the solution gradually dissolves the outer metal layer of the diamond material, the material gradually becomes smaller. Therefore, when the elastic force of the elastic element 35 is greater than the weight of the material on the filter screen 31, the two lower filter screens 31 begin to gradually rise and reset until the three filter screens 31 come into contact in sequence, causing the material that has not yet fully reacted to concentrate together. In this way, the heating plates 40 at the bottom of the three filter screens 31 will also concentrate together. The concentrated heating area can effectively accelerate the dissolution of the material that has not yet fully reacted, improve the reaction efficiency, until all the material has reacted and finally diamond particles are obtained.

[0041] like Figure 1 The feeding assembly includes a hopper 20 fixedly installed on the workbench 10. The bottom of the hopper 20 is connected to a feeding pipe 21. An auger is installed inside the feeding pipe 21 and is driven by a motor. The outlet of the feeding pipe 21 faces the inlet of the reaction tank 30, so that the material is first added to the hopper 20 and then conveyed to the reaction tank 30 after being conveyed by the feeding pipe 21.

[0042] Diamond particles tend to adhere to the inner wall of reaction vessel 30, making it impossible to fully recover the diamond particles and resulting in waste. Therefore, this problem can be solved by using a sealing component, which will be explained in detail below.

[0043] Continue back Figures 3 to 7 The sealing assembly includes a sealing plate 50 disposed below the filter screen 31. A sliding rod 51 is fixedly mounted on the sealing plate 50. The sliding rod 51 passes through all the mounting cylinders 32 and extends to the drive rod 33 at its upper end. The drive rod 33 has a hollow structure and openings on both sides (e.g., Figure 6The slide rod 51 has two side ears 52 on its outer side wall near the upper end. Both side ears 52 pass through the openings on both sides of the drive rod 33 and extend to the outside of the openings. This allows the drive rod 33 to rotate synchronously with the slide rod 51, which in turn drives the sealing plate 50 to rotate. The sealing plate 50 has multiple stirring blades 55 at its bottom, which can rotate the solution in the reaction vessel 30 and improve the reaction efficiency.

[0044] The sealing assembly also includes a lifting assembly capable of driving the sealing plate 50 to move up and down. The lifting assembly includes a lifting plate 53 slidably mounted on the outside of the drive rod 33. An annular groove is provided on the inner side of the lifting plate 53, such that the portions of the two side ears 52 extending to the outside of the opening are located within the annular groove (e.g., Figure 4 and Figure 7 At this time, while ensuring the rotation of the slide rod 51, the lifting plate 53 can drive the slide rod 51 to rise and fall. Two lead screws 56 are rotatably installed on the outer shell 36. The lead screws 56 are driven by a motor and pass through the lifting plate 53. The lead screws 56 and the lifting plate 53 are threaded together. When the motor drives the lead screws 56 to rotate, the lifting plate 53 can drive the slide rod 51 to rise and fall, thereby controlling the rise and fall of the sealing plate 50.

[0045] After the reaction is completed, the sealing plate 50 is raised until it touches the bottom of the bottom filter screen 31. It is worth noting that the upper surface of the sealing plate 50 has a receiving groove 54, which allows the heating plate 40 at the bottom of the filter screen 31 to be located in the receiving groove 54, so that the sealing plate 50 can completely fit with the bottom of the filter screen 31 and seal the filter holes at the bottom of the filter screen 31.

[0046] When water is added to the reaction vessel 30 for cleaning, the water falls to the bottom of the filter screen 31. Since the bottom of the filter screen 31 is blocked by the sealing plate 50, the water will flow out from the filter holes on the side wall of the filter screen 31. The flowing water will just hit the inner wall of the reaction vessel 30, washing away the diamonds that are adhering to the inner wall of the reaction vessel 30, making it easier to recycle them.

[0047] It is particularly important to note that in this embodiment, the diameter of the filter screen 31 is slightly smaller than the inner diameter of the reaction vessel 30. In this way, the water flowing out from the filter holes on the side wall of the filter screen 31 will just hit the inner wall of the reaction vessel 30.

[0048] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A recycling device for diamond recovery, comprising: Reaction vessel and heating plate; The feature is that multiple coaxially arranged filter screens are installed in the reaction vessel along its axial direction. The filter screens have a concave structure. An installation cylinder is fixedly installed at the center of each filter screen. Adjacent installation cylinders slide vertically together. The installation cylinder of the uppermost filter screen is rotatably installed in the reaction vessel. An elastic element is fixedly installed between adjacent installation cylinders. Materials of different particle sizes can be distributed in different filter screens. The filter screen has two states: open and closed. In the closed state, two adjacent filter screens abut against each other. In the open state, the filter screen can slide along the axial direction of the reaction vessel. Multiple filter screens are distributed at intervals, and the elastic element is stretched. A drive rod is fixedly installed on the topmost mounting cylinder. The drive rod rotates with the reaction vessel, and the upper end of the drive rod extends to the top of the reaction vessel. A shell is installed on the top of the reaction vessel, and a motor is fixedly installed on the shell. The drive rod is connected to the output end of the motor. A sealing plate is installed below the filter screen, and a sliding rod is fixedly installed on the sealing plate. The sliding rod passes through the mounting cylinder and extends to the drive rod at the top. Openings are provided on both sides of the drive rod, and side ears are provided on the sliding rod. The side ears are located in the openings. A lifting plate is slidably fitted on the outside of the drive rod. There is an annular groove on the inside of the lifting plate, and the side ears are slidably fitted in the annular groove. Two lead screws are rotatably installed on the outer shell. The lead screws are driven by a motor and are threadedly fitted with the lifting plate. After diamond material is added to the reaction vessel, the drive rod drives the three filter screens to rotate synchronously. Material smaller than the pore size of the top filter screen falls down to the middle filter screen, and similarly, material smaller than the pore size of the middle filter screen falls down to the bottom filter screen. Under the influence of gravity, the two bottom filter screens move downwards respectively. Finally, the three filter screens are dispersed vertically and spaced apart in the reaction vessel. First, the material is screened to ensure that the particle size of the material on each filter screen is basically the same, which facilitates the material to fully contact and react with the solution. At the same time, the material is dispersed vertically and vertically in the three filter screens, which further improves the fullness of the reaction between the solution and the material. As the solution gradually dissolves the outer metal layer of the diamond material, the material gradually shrinks. When the elastic force of the elastic element exceeds the weight of the material on the filter screen, the two lower filter screens begin to gradually rise and reset until all three filter screens come into contact in sequence. This causes the material that has not yet fully reacted to concentrate together, and the heating plates at the bottom of the three filter screens also concentrate together. This concentrated heating area can effectively accelerate the dissolution of the material that has not yet fully reacted, thus improving the reaction efficiency.

2. The recycling device for diamond recycling according to claim 1, characterized in that, A vertical groove is provided on the inner wall of the mounting cylinder, and a slider is fixedly provided on the outer wall of the adjacent mounting cylinder, with the slider slidingly engaged in the groove.

3. A recycling device for diamond recycling according to claim 1, characterized in that, The elastic element is a spring, which is installed inside the mounting cylinder, and the two ends of the spring are fixedly connected to two adjacent mounting cylinders.

4. A recycling device for diamond recycling according to claim 1, characterized in that, The bottom of the sealing plate is equipped with multiple stirring blades.

5. A recycling device for diamond recycling according to claim 1, characterized in that, It also includes a hopper, with a feeding pipe connected to the bottom of the hopper. The feeding pipe is equipped with an auger, which is driven by a motor. The discharge port of the feeding pipe is opposite to the feed port of the reaction vessel.

6. A recycling device for diamond recovery according to claim 1, characterized in that, The heating plate is fixedly installed at the bottom of the filter screen.

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