A kind of waste sampling and detection equipment and method for recycled aluminum

Abstract

The present invention belongs to the field of sampling and detection technology, and in particular relates to a sampling and detection device and method for recycled aluminum waste, comprising a heating box and a crucible, wherein the crucible is arranged inside the heating box, a pressure cover is arranged on the upper end of a support frame, a first mold is arranged on the pressure cover, and a liftable pressure head is arranged on the upper side of the first mold; a blocking rod is integrally extended from the bottom end of the first mold, a discharge port is arranged at the bottom end of the crucible, the bottom end of the blocking rod is cooperatively connected to the discharge port, and a first ejector rod is cooperatively arranged on the inner wall of the blocking rod; a second mold is arranged on the bottom side of the crucible, a guide rod is integrally extended from the bottom end of the second mold, and a second ejector rod is cooperatively arranged on the inner wall of the guide rod, the second ejector rod can rise to demold the second mold, and the second ejector rod can rise to abut against the first ejector rod to demold the first mold. The equipment performs sampling by pressing and remelting methods for different types of aluminum waste, and the equipment occupies a small area, is simple to operate, is convenient to demold, and has high sampling efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of sampling and detection, and in particular relates to a sampling and detection device and method for recycled aluminum waste. Background Art

[0002] The new technology of low-carbon recycled aluminum and environmentally friendly plate recycling mainly includes: research on low-consumption and high-efficiency smelting technology of recycled aluminum, efficient and rapid melting of furnace charge, and low consumption of natural gas; research on low metal loss control technology of recycled aluminum, reducing metal burning loss during the smelting process of recycled aluminum; research on recycled aluminum component ratio control technology to meet customer chemical composition requirements; research on high-purity aluminum melt refining control technology to effectively reduce gas, slag and other impurities brought by recycled aluminum, so that the purity of aluminum liquid meets product requirements.

[0003] When researching high-precision composition ratio control technology, it is necessary to develop rapid and accurate methods for testing the chemical composition of recycled aluminum to facilitate the selection and matching of furnace charges. Specifically, for different types of recycled aluminum, appropriate sampling methods such as cutting, remelting, and pressing should be used to provide accurate chemical composition data. Based on the chemical composition of each scrap material, and taking into account factors such as the composition of miscellaneous materials, weight estimation deviation, and element loss, the dosage combination of various scrap materials, aluminum ingots, and molten aluminum is calculated to maximize the scrap usage while ensuring the chemical composition is qualified.

[0004] At present, when dealing with different types of recycled aluminum scrap, due to the different types of scrap, its shape and volume are also different, such as: aluminum alloy plates, bars, wires, trimmings, aluminum foil scrap rolls, aluminum chips, aluminum powder, etc., operators need to distinguish the types of scrap and then use different equipment for sampling operations. The various sampling devices are scattered, the equipment occupies a large area, the operation is complicated, and the sampling efficiency is low. Summary of the Invention

[0005] In response to the technical problems existing in the background technology, the present invention provides a sampling and detection device and method for recycled aluminum waste.

[0006] To achieve the above objectives, the technical solution provided by the present invention is:

[0007] A waste sampling and detection device for recycled aluminum comprises a heating box, a support frame, a first mold, a second mold, a crucible and a pressure head, the support frame is arranged inside the heating box, the crucible is arranged inside the support frame, the upper end of the support frame is provided with a pressure cover, the first mold is arranged on the pressure cover, and the upper side of the first mold is provided with a liftable pressure head; a blocking rod is integrally extended from the bottom end of the first mold, a discharge port is provided at the bottom end of the crucible, the bottom end of the blocking rod can be matched with the discharge port, and the inner wall of the blocking rod is matched with a first push rod; a second mold is provided on the bottom side of the crucible, a guide rod is integrally extended from the bottom end of the second mold, and a second push rod is matched with the inner wall of the guide rod, the second push rod can rise to demold the second mold, and the second push rod can rise and abut against the first push rod to demold the first mold.

[0008] Optionally, a plurality of sliding rods are evenly distributed on the upper end of the pressure cover, and a slip ring is provided on the upper end of the sliding rod, and an operating cylinder is provided on the upper end of the heating box. The sliding rod passes through the upper end of the heating box, and the slip ring slides close to the outer wall of the operating cylinder. A first spring is provided on the sliding rod between the slip ring and the heating box. When the first spring is not under pressure, the blocking rod is lifted up to open the flow outlet; the first mold is arranged close to the inner wall of the operating cylinder, and a pressure rod is extended from the upper end of the pressure head. The pressure rod passes through the upper end of the operating cylinder, and a crimping block is provided on the upper end of the pressure rod. A second spring is provided on the pressure rod between the crimping block and the operating cylinder. When the second spring is not under pressure, the pressure head is lifted up and away from the first mold; a first sampling port is provided on one side of the operating cylinder.

[0009] Optionally, the recycled aluminum waste sampling and detection equipment further includes an operating table, which is provided with a first mounting hole, a stepped through hole and a second mounting hole in sequence from top to bottom, and the bottom end of the support frame is evenly distributed with a number of annular side blocks, and the bottom end of the side block is provided with a bottom ring, and the bottom ring is arranged close to the first mounting hole, the bottom end of the crucible is supported on the bottom ring, and the outer wall of the crucible is arranged close to the inner wall of the side block; the second mold is arranged in the stepped through hole.

[0010] Optionally, a notch is provided on one side of the first mounting hole; a positioning block is provided on one side of the heating box, the heating box is provided in the first mounting hole, and the positioning block is provided in the notch; a heating coil is provided in the inner cavity of the heating box, and both ends of the heating coil are led out to the outside of the heating box through the positioning block; the heating coil is provided in the cavity between the heating box and the support frame.

[0011] Optionally, the upper end of the support frame is provided with a limiting groove that cooperates with the pressure cover. When the pressure cover is tightly set in the limiting groove, the blocking rod is set tightly against the discharge port.

[0012] Optionally, a plurality of discharge pipes are evenly distributed on the circumference of the upper end of the heating box, and the discharge pipes are arranged obliquely above the crucible. The pressure cover is a hollow structure, and the drop points of the discharge pipes correspond to the hollow structure of the pressure cover.

[0013] Optionally, a cooling cylinder is provided on the bottom wall of the second mounting hole, and two cooling pipes are provided on the cooling cylinder, and the cooling pipes extend to the outside of the operating table; a first limiting ring is provided at the bottom end of the guide rod, and a bottom cover is slidingly provided on the outside of the guide rod, and a third spring is provided on the guide rod between the bottom cover and the first limiting ring, the upper half of the second mold is provided in the stepped through hole, and the lower half of the second mold is provided in the cooling cylinder, and the third spring tends to cause the bottom cover to be set close to the cooling cylinder.

[0014] Optionally, a second limiting ring is provided at the bottom end of the second push rod, and a fourth spring is sleeved on the second push rod between the first limiting ring and the second limiting ring, and the fourth spring tends to move the second mold upward to closely fit with the second push rod.

[0015] A method for sampling and detecting recycled aluminum waste, comprising the following steps:

[0016] S1, putting powdered aluminum scrap into a first mold from a first sampling port, controlling the pressing head to descend and apply pressure, and using a pressing method to press out a first sample;

[0017] S2, energizing the heating coil to preheat the crucible and heat the first mold at the same time, so that the pressed first sample is heated to a temperature that is easy to demold;

[0018] S3, controlling the second push rod to rise until the second push rod abuts against the first push rod, pushing the first push rod to rise, thereby demolding the first sample, and taking the first sample out from the first sampling port after demolding;

[0019] In step S4, the second ejector pin descends and resets, and the pressure head descends, pushing the first mold and the gland downward, causing the blocking rod to close the discharge port. Crumb-like aluminum scrap is then placed into the crucible through the discharge pipe, and the heating coil is energized to melt it. Then, the pressure head ascends, the blocking rod ascends and resets, opening the discharge port, and the high-temperature molten metal is discharged into the second mold.

[0020] S5, ventilate and cool the cooling cylinder, use the remelting method to make the second sample, control the second ejector pin to rise, and realize the demoulding of the second sample.

[0021] The present invention has the following advantages and beneficial effects:

[0022] The present invention designs a waste sampling and detection equipment for recycled aluminum, which can recycle and sample different types of aluminum waste respectively. The integrated equipment adopts the pressing method and the remelting method to realize sampling. The equipment occupies a small area, is simple to operate, is easy to demould, and has high sampling efficiency.

[0023] The first mold and the second mold designed for different types of aluminum waste are respectively arranged on the upper and lower sides of the crucible. This vertically arranged sampling and sampling equipment can select the corresponding mold for sampling according to the type of aluminum waste, and use the crucible to realize the discharge of the metal solution. At the same time, it can also heat the first mold to facilitate demolding. The first mold realizes pressing demolding, and the second mold realizes forming demolding. This linkage demolding structure can realize the demolding of the two molds with a single drive. The overall structure is simple and compact, and the sampling efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the structural diagrams of the recycled aluminum waste sampling and detection equipment of the present invention;

[0025] Figure 2 This is the second structural diagram of the recycled aluminum waste sampling and testing equipment of the present invention;

[0026] Figure 3 for Figure 1 Left view of;

[0027] Figure 4 for Figure 1 Front view of

[0028] Figure 5 for Figure 1 A local enlarged view of point a in the middle;

[0029] Figure 6 for Figure 3 Cross-sectional view along the AA direction;

[0030] Figure 7 for Figure 4 Cross-sectional view along the BB direction;

[0031] Figure 8 for Figure 6 A cross-sectional view of the middle blocking rod rising to open the crucible discharge port;

[0032] Figure 9 It is an isometric cross-sectional view of a portion of the structure of the equipment for sampling and detecting scrap recycled aluminum in the present invention;

[0033] Figure 10 It is an isometric cross-sectional view of the operating table of the present invention;

[0034] Figure 11 This is one of the structural diagrams of the support frame in the present invention;

[0035] Figure 12 This is the second structural diagram of the support frame in the present invention;

[0036] Figure 13It is a structural diagram of the heating box in the present invention;

[0037] Figure 14 for Figure 13 A top view of

[0038] Figure 15 is a cross-sectional view of the heating box of the present invention;

[0039] Figure 16 It is a structural diagram of the gland in the present invention;

[0040] Figure 17 A half-sectional view of the first mold of the present invention;

[0041] Figure 18 A half-sectional view of the second mold of the present invention;

[0042] Figure 19 This is a structural diagram of the second push rod in the present invention.

[0043] Figure numerals: 1-operating table, 11-first mounting hole, 12-notch, 13-step through hole, 14-second mounting hole, 141-second sampling port, 15-second pin hole, 16-cooling cylinder, 17-cooling tube, 18-rotating sleeve, 19-operating slot, 2-support frame, 21-limiting slot, 22-side block, 23-bottom ring, 24-center hole, 25-first pin hole, 26-pin shaft, 3-heating box, 31-positioning block, 32-operating cylinder, 33-through hole, 34-first sampling port, 35-discharging pipe, 36-slide hole, 37-heating coil, 4-pressure cover, 41-connecting block, 42-support ring, 43-slide rod, 44-first spring, 45-slip ring, 5- Crucible, 51-discharge port, 6-first mold, 61-blocking rod, 611-first plug, 612-first valve hole, 62-first push rod, 621-second plug, 7-second mold, 71-guide cylinder, 711-second valve hole, 72-first limiting ring, 73-second push rod, 731-third plug, 732-second limiting ring, 74-fourth spring, 75-bottom cover, 76-third spring, 8-pressure head, 81-pressure rod, 82-crimping block, 83-second spring, 9-hydraulic cylinder, 91-first piston rod, 92-crimping head, 93-spindle, 10-cylinder, 101-second piston rod, 102-connecting head, 103-oblique rib, 104-guide rod. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0045] Example 1

[0046] like Figures 1 to 9 As shown, a sampling and detection device for recycled aluminum waste includes a heating box 3, a support frame 2, a first mold 6, a second mold 7, a crucible 5, a pressing head 8 and other components.

[0047] like Figures 1 to 9 As shown, the support frame 2 is arranged inside the heating box 3, the crucible 5 is arranged inside the support frame 2, the upper end of the support frame 2 is provided with a pressure cover 4, the first mold 6 is arranged on the pressure cover 4, the upper side of the first mold 6 is provided with a liftable pressure head 8, the first mold 6 and the pressure head 8 are coaxially arranged, and the pressure head 8 and the first mold 6 are used to realize pressure sample formation. A blocking rod 61 is integrally extended from the bottom end of the first mold 6, and a conical first plug 611 is provided at the bottom end of the blocking rod 61. A conical discharge port 51 is provided at the bottom end of the crucible 5. The first plug 611 at the bottom end of the blocking rod 61 can be connected with the discharge port 51 to close or open the discharge port 51. The inner wall of the blocking rod 61 is provided with a first push rod 62, and the bottom end of the first push rod 62 is arranged inside the blocking rod 61 to prevent the high-temperature aluminum liquid from contacting the blocking rod 61. The demoulding of the first mold 6 is realized by the rise of the first push rod 62. Specifically, a conical second plug 621 is provided at the upper end of the first push rod 62, and a conical first valve hole 612 is provided at the bottom end of the first mold 6. The second plug 621 can be fitted into the first valve hole 612. A second mold 7 is provided at the bottom side of the crucible 5. A guide cylinder 71 is integrally extended from the bottom end of the second mold 7. A second push rod 73 is fitted into the inner wall of the guide cylinder 71. The upper end of the second push rod 73 is provided with a conical third plug 731. The bottom end of the second mold 7 is provided with a conical second valve hole 711. The third plug 731 can be fitted into the second valve hole 711. The first mold 6, the second mold 7, and the ram 8 are coaxially arranged. The outer diameter of the third plug 731 is equal to or slightly smaller than the inner diameter of the plug rod 61. The second push rod 73 can rise to demold the second mold 7. The second push rod 73 can rise to the inside of the plug rod 61 and abut against the first push rod 62 to demold the first mold 6.

[0048] The present invention can recycle and sample different types of aluminum waste respectively, and adopts integrated equipment to realize sampling by pressing method and remelting method. The equipment occupies a small area, is simple to operate, is easy to demould, and has high sampling efficiency.

[0049] The first mold 6 and the second mold 7 designed for different types of aluminum wastes in the present invention are respectively arranged on the upper and lower sides of the crucible 5. This vertically arranged sampling and sampling equipment can select the corresponding mold for sampling according to the type of aluminum waste, and use the crucible 5 and the blocking rod 61 to realize the discharge of the metal solution. At the same time, it can also heat the first mold 6 to facilitate demolding. The first mold 6 realizes pressing demolding, and the second mold 7 realizes forming demolding. This linkage demolding structure can realize the demolding of the two molds with a single drive. The overall structure is simple and compact, and the sampling efficiency is high.

[0050] Example 2

[0051] like Figures 1 to 19 As shown, in the present invention, a plurality of slide rods 43 are evenly distributed on the upper end of the gland 4, and a slip ring 45 is provided on the upper end of the slide rod 43. An operating cylinder 32 is provided on the upper end of the heating box 3, and a slide hole 36 corresponding to the slide rod 43 is provided on the upper end of the heating box 3. The slide hole 36 is opened on the outside of the operating cylinder 32, and the slide rod 43 passes through the slide hole 36 on the upper end of the heating box 3. The slip ring 45 slides closely against the outer wall of the operating cylinder 32. A first spring 44 is sleeved on the slide rod 43 between the slip ring 45 and the heating box 3. When the first spring 44 is not compressed, the gland 4 is suspended relative to the support frame 2, and the blocking rod 61 is lifted up to open the vent 51 (as shown in FIG. Figure 8 As shown). The first mold 6 is set close to the inner wall of the operating cylinder 32 to achieve the positioning of the first mold 6. A pressure rod 81 is extended from the upper end of the pressure head 8. A through hole 33 is set at the upper end of the operating cylinder 32. The pressure rod 81 passes through the through hole 33 at the upper end of the operating cylinder 32. A crimping block 82 is set at the upper end of the pressure rod 81. A second spring 83 is sleeved on the pressure rod 81 between the crimping block 82 and the operating cylinder 32. When the second spring 83 is not compressed, the pressure head 8 is lifted away from the first mold 6 (as shown). Figure 8 A first sampling port 34 is provided on one side of the operating cylinder 32 , through which materials can be put in or pressed samples can be taken out.

[0052] With this structure, when the ram 8 is pressed down, it drives the first mold 6, the cover 4, and the blocking rod 61 to descend as a whole, closing the discharge port 51 and allowing the metal in the crucible 5 to be heated and melted. When the ram 8 is released from pressure, the ram 8 and the cover 4 both rise and return to their original positions, driving the blocking rod 61 to rise and open the discharge port 51, allowing the molten metal to be poured into the second mold 7 on the bottom side. Without the use of other driving mechanisms, the lifting and lowering of the ram 8 can achieve the melting and discharge operations of the crucible 5, while the ram 8 and the first mold 6 can also be used for compression sampling.

[0053] Example 3

[0054] like Figures 1 to 19As shown, in the present invention, the waste sampling and detection equipment for recycled aluminum also includes an operating table 1, which is provided with a first mounting hole 11, a stepped through hole 13 and a second mounting hole 14 from top to bottom. The first mounting hole 11, the stepped through hole 13 and the second mounting hole 14 are coaxially arranged, and the bottom end of the support frame 2 is evenly distributed with a plurality of annular side blocks 22, and the bottom ends of the plurality of side blocks 22 are provided with bottom rings 23, and the bottom rings 23 are arranged close to the first mounting hole 11, and the bottom end of the crucible 5 is supported on the bottom ring 23, and the outer wall of the crucible 5 is arranged close to the inner wall of the side block 22 to achieve tight installation of the crucible 5, and the heating box 3 is sleeved on the outside of the support frame 2, and the bottom end of the heating box 3 is supported on the bottom ring 23, and the outer side of the heating box 3 is arranged close to the inner wall of the first mounting hole 11 to achieve installation of the heating box 3. Second mold 7 is positioned within stepped through hole 13. Stepped through hole 13 comprises two sections of different diameters, with the lower section being larger in diameter than the upper section. Second mold 7 is positioned within the lower section of stepped through hole 13. A center hole 24 is positioned at the center of bottom ring 23, with the bottom end of center hole 24 aligned with stepped through hole 13. Crucible 5, support frame 2, first mold 6, and second mold 7 are coaxially mounted. This allows blocking rod 61 to open vent 51, allowing the molten metal within crucible 5 to flow through vent 51, center hole 24, and stepped through hole 13 into the interior of second mold 7.

[0055] like Figure 6 、 Figure 10 、 Figure 12 As shown, further, a plurality of first pin holes 25 are evenly distributed on the bottom side of the bottom ring 23, and a plurality of second pin holes 15 are evenly distributed between the first mounting hole 11 and the second mounting hole 14. During installation, the pin shaft 26 is first inserted into the second pin hole 15, and then the support frame 2 is installed so that the first pin hole 25 of the bottom ring 23 and the pin shaft 26 in the second pin hole 15 are aligned, so that the limited installation of the support frame 2 can be achieved.

[0056] like Figures 1 to 19 As shown, further, a notch 12 is provided on one side of the first mounting hole 11; a positioning block 31 is provided on one side of the heating box 3, and the positioning block 31 is arranged in the notch 12 to realize the positioning installation of the heating box 3. The inner cavity of the heating box 3 is provided with a heating coil 37, and the two ends of the heating coil 37 are led to the outside of the heating box 3 through the positioning block 31; the heating coil 37 is arranged in the cavity between the heating box 3 and the support frame 2. The bottom side of the support frame 2 is connected to the bottom ring 23 through the side block 22. This hollow structure can realize heat transfer and ensure that the heating coil 37 heats the crucible 5 efficiently. In addition, as a supporting structure, the support frame 2 needs to play a supporting role. Therefore, it needs to be made of high-strength, high-temperature resistant materials to allow the support frame 2 to protect the crucible 5 inside. When the pressure head 8 and the first mold 6 press the sample, the first mold 6 directly transfers the pressure to the support frame 2 to avoid causing pressure damage to the crucible 5.

[0057] like Figure 6 As shown, further, the upper end of the support frame 2 is provided with a limiting groove 21 that cooperates with the pressure cover 4. When the pressure cover 4 is tightly set in the limiting groove 21, the blocking rod 61 is set tightly against the discharge port 51. This design ensures that the blocking rod 61 can block the discharge port 51 when it is lowered into place. At the same time, the bottom end of the pressure cover 4 is supported on the support frame 2 to prevent the pressure cover 4 from directly contacting the crucible 5. When the first mold 6 and the pressure head 8 press the sample, the pressure is directly transmitted to the support frame 2 to prevent the pressure cover 4 from contacting the crucible 5 and being damaged. Such a combined structure can realize the heating and melting of the metal by the crucible 5, and at the same time protect the crucible 5 when the sample is pressed under high pressure.

[0058] Furthermore, a plurality of discharge pipes 35 are evenly distributed on the circumference of the upper end of the heating box 3 to achieve uniform discharge. The discharge pipes 35 are tilted above the crucible 5, and the pressure cover 4 is a hollow structure. The discharge point of the discharge pipe 35 corresponds to the hollow structure of the pressure cover 4, so that the material can be placed in the crucible 5 for melting. When the heating coil 37 is energized for heating, an exhaust collection device is externally connected to the discharge pipe 35 to achieve flue gas purification and recovery. Specifically, the hollow structure of the pressure cover 4 is as follows: a plurality of connecting blocks 41 are evenly distributed inside the pressure cover 4, and the plurality of connecting blocks 41 are connected to a support ring 42, thereby forming a hollow structure. The first mold 6 is arranged on the support ring 42, and the blocking rod 61 extends downward from the inner wall of the support ring 42.

[0059] Example 4

[0060] like Figures 1 to 19 As shown, the present invention also designs a cooling mechanism to cool and shape the molten metal in the second mold 7. Specifically, the bottom wall of the second mounting hole 14 is provided with a cooling cylinder 16, and the cooling cylinder 16 is arranged inside the second mounting hole 14. Two cooling pipes 17 are provided on the cooling cylinder 16. The cooling pipes 17 pass through the outside of the operating table 1 and are connected to external air cooling or water cooling equipment. A first limiting ring 72 is provided at the bottom end of the guide cylinder 71, and a bottom cover 75 is slidingly provided on the outside of the guide cylinder 71. A third spring 76 is sleeved on the guide cylinder 71 between the bottom cover 75 and the first limiting ring 72. The upper half of the second mold 7 is arranged in the stepped through hole 13, and the lower half of the second mold 7 is arranged in the cooling cylinder 16. The third spring 76 tends to make the bottom cover 75 close to the cooling cylinder 16.

[0061] Furthermore, a second limiting ring 732 is provided at the bottom end of the second push rod 73, and a fourth spring 74 is sleeved on the second push rod 73 between the first limiting ring 72 and the second limiting ring 732. The fourth spring 74 tends to move the second mold 7 upward and closely fit with the second push rod 73.

[0062] In the present invention, when the second mold 7 is installed, first, the presence of the fourth spring 74 causes the second mold 7 to move upward and fit tightly with the second push rod 73. That is, at this time, the second mold 7 and the second push rod 73 fit tightly together, and the conditions for the introduction of molten metal are met. Then the second push rod 73 is allowed to rise until the bottom cover 75 contacts the cooling cylinder 16, and the third spring 76 is slightly compressed to ensure the crimping seal between the cooling cylinder 16 and the bottom cover 75. It should be noted that the spring constant of the fourth spring 74 is much greater than the spring constant of the third spring 76. Therefore, when the third spring 76 is compressed, the fourth spring 74 is not compressed. At this time, the second mold 7 and the second push rod 73 are still in a tight fit state, and the top of the second mold 7 just contacts the upper wall of the stepped through hole 13. The second push rod 73 must not be allowed to rise relative to the second mold 7, which will cause the bottom side of the second mold 7 to be poorly sealed and leak molten metal.

[0063] This structure utilizes the second ejector pin 73 to achieve installation and disassembly of the second mold 7, and simultaneously utilizes the second ejector pin 73 to achieve molding and demolding of the second mold 7, providing multiple functional options. Furthermore, the second mold 7 is cooled and molded by utilizing the liftable bottom cover 75 in conjunction with the cooling cylinder 16. The overall structure is ingenious, facilitating cooling and molding, as well as demolding after molding. After demolding, the second mold 7 is lowered away from the cooling cylinder 16 to remove the sample from the second mold 7. A second sampling port 141 is provided on the bottom side of the operating table 1, communicating with the second mounting hole 14. After the second sample in the second mold 7 is cooled and molded, the second ejector pin 73 directly pushes up to achieve separation of the second sample from the second mold 7. The second ejector pin 73 then descends, driving the second mold 7, the bottom cover 75, and the second sample as a whole to descend away from the cooling cylinder 16. Once the second sample reaches the second sampling port 141, a person can hold the second mold 7 with a handheld tool and press downward to eject the demolded second sample from the second mold 7.

[0064] Example 5

[0065] In the present invention, a hydraulic cylinder 9 is provided at the upper end of the operating table 1 for driving the pressure head 8 to descend. A first piston rod 91 is provided on the hydraulic cylinder 9, and a crimping head 92 is provided at the end of the first piston rod 91. The crimping head 92 cooperates with the crimping block 82 to achieve the descent of the pressure head 8.

[0066] In the present invention, two sets of recycled aluminum scrap sampling and testing equipment (crucible 5, heating box 3, pressure head 8, first mold 6, second mold 7, etc.) are provided. A rotatable mandrel 93 is provided between the two sets of equipment. A rotating sleeve 18 is provided between the two first mounting holes 11. The bottom end of mandrel 93 is rotatably disposed within rotating sleeve 18. By rotating mandrel 93, hydraulic cylinder 9 can be controlled to reach the sampling and testing equipment on either side to perform related operations, thereby realizing the function of preparing multiple batches of samples. In addition, an operating slot 19 is provided on one side of the operating table 1, where cutting equipment can be installed. The hydraulic cylinder 9 and the pressure head 92 are used to fix and compress the plate, and the sample is prepared by cutting. In this way, multiple sampling equipment can be integrated, and the functions of multiple sampling can coexist.

[0067] In the present invention, a cylinder 10 is provided at the bottom end of the operating table 1. A second piston rod 101 is provided within the cylinder 10. The ends of the second piston rod 101 are detachably connected to the second ejector rod 73 via connectors 102. The cylinder 10 is used to drive the second ejector rods 73 on both sides to rise and fall. The cylinder 10 is extended and retracted to achieve the raising and lowering of the second ejector rod 73, thereby demolding the first mold 6 and the second mold 7. The two sides of the second piston rod 101 are connected and fixed by diagonal ribs 103. Guide rods 104 are provided on the diagonal ribs 103. The guide rods 104 are slidably mounted on the inner wall of the operating table 1, and are precisely guided by the guide cylinders 71.

[0068] Example 6

[0069] A method for sampling and detecting recycled aluminum waste, comprising the following steps:

[0070] S1, put the powdered aluminum scrap into the first mold 6 from the first sampling port 34, control the pressing head 8 to descend and apply pressure, and use the pressing method to press out the first sample.

[0071] In step S2, the heating coil 37 is energized to preheat the crucible 5 while simultaneously heating the first mold 6, so that the first sample after pressing is maintained at a certain temperature. The purpose of preheating the crucible 5 here is to prevent direct high-temperature heating from causing thermal stress on the inner wall of the crucible 5, which could lead to cracking or damage to the crucible 5. Simultaneously, the first mold 6 on the upper side of the crucible 5 and the pressed first sample are heated. When the discharge port 51 is closed by the blocking rod 61, the pressure cover 4 is cooperatively arranged on the support frame 2. A cavity is provided between the support frame 2 and the heating box 3, which can transfer heat and heat the first mold 6 to a temperature that is easy to demold. Heating the first mold 6 can reduce the friction between the first mold 6 and the first sample, and can also maintain a certain temperature of the pressed first sample, making it easier to demold. This is particularly suitable for temperature-sensitive metal powders (such as aluminum, magnesium, etc.).

[0072] S3, controlling the second push rod 73 to rise until the second push rod 73 abuts against the first push rod 62 upward, pushing the first push rod 62 to rise, realizing demoulding of the first sample, and taking the first sample out from the first sampling port 34 after demoulding.

[0073] S4, the second push rod 73 descends and resets to ensure that there is a certain gap between the top of the second mold 7 and the stepped through hole 13, and at the same time the bottom cover 75 is close to the cooling cylinder 16, and then the pressure head 8 descends to push the first mold 6 and the pressure cover 4 down, so that the blocking rod 61 closes the discharge port 51, and the debris-like aluminum waste is put into the crucible 5 through the discharge pipe 35, and the heating coil 37 is energized to melt it; then, the pressure head 8 rises, the blocking rod 61 rises and resets to open the discharge port 51, and the high-temperature metal liquid is discharged into the second mold 7.

[0074] S5: Ventilate and cool the cooling cylinder 16, then remelt the second sample. Then, control the second ejector pin 73 to ascend and release the second sample from the mold. Once the second sample is released from the mold 7, lower the second ejector pin 73 until the mold 7 reaches the second sampling port 141. Then, use a tool to lower the mold 7 relative to the second ejector pin 73 to eject the second sample from the mold 7.

[0075] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A sampling and testing device for recycled aluminum waste, characterized by: It includes a heating box, a support frame, a first mold, a second mold, a crucible and a pressing head. The support frame is arranged inside the heating box, the crucible is arranged inside the support frame, a pressure cover is provided at the upper end of the support frame, the first mold is arranged on the pressure cover, and a liftable pressure head is provided on the upper side of the first mold; a blocking rod is integrally extended from the bottom end of the first mold, a discharge port is provided at the bottom end of the crucible, the bottom end of the blocking rod can be matched with the discharge port, and the inner wall of the blocking rod is matched with a first push rod; A second mold is provided on the bottom side of the crucible, a guide rod is integrally extended from the bottom end of the second mold, and a second ejector rod is cooperatively provided on the inner wall of the guide rod. The second ejector rod can be raised to demould the second mold, and the second ejector rod can be raised to abut against the first ejector rod to demould the first mold; The upper end of the pressure cover is evenly distributed with a number of sliding rods, the upper end of the sliding rods is provided with a slip ring, the upper end of the heating box is provided with an operating cylinder, the sliding rod passes through the upper end of the heating box, the slip ring slides close to the outer wall of the operating cylinder, the sliding rod between the slip ring and the heating box is sleeved with a first spring, when the first spring is not under pressure, the blocking rod is lifted up to open the flow outlet; the first mold is arranged close to the inner wall of the operating cylinder, the upper end of the pressure head is extended with a pressure rod, the pressure rod passes through the upper end of the operating cylinder, the upper end of the pressure rod is provided with a crimping block, the pressure rod between the crimping block and the operating cylinder is sleeved with a second spring, when the second spring is not under pressure, the pressure head is lifted up away from the first mold; a first sampling port is provided on one side of the operating cylinder.

2. The recycled aluminum waste sampling and detection equipment according to claim 1, characterized in that: It also includes an operating table, which is provided with a first mounting hole, a stepped through hole and a second mounting hole in sequence from top to bottom; the bottom end of the support frame is evenly distributed with a plurality of annular side blocks; the bottom end of the side block is provided with a bottom ring, the bottom ring is arranged close to the first mounting hole, the bottom end of the crucible is supported on the bottom ring, and the outer wall of the crucible is arranged close to the inner wall of the side block; the second mold is arranged in the stepped through hole.

3. The recycled aluminum waste sampling and detection equipment according to claim 2, characterized in that: A notch is provided on one side of the first mounting hole; a positioning block is provided on one side of the heating box, the heating box is arranged in the first mounting hole, and the positioning block is arranged in the notch; a heating coil is provided in the inner cavity of the heating box, and both ends of the heating coil are led out to the outside of the heating box through the positioning block; the heating coil is arranged in the cavity between the heating box and the support frame.

4. The recycled aluminum waste sampling and detection equipment according to claim 2, characterized in that: The upper end of the support frame is provided with a limiting groove that cooperates with the pressure cover. When the pressure cover is tightly arranged in the limiting groove, the blocking rod is tightly arranged against the discharge port.

5. The recycled aluminum waste sampling and detection equipment according to claim 2, characterized in that: A plurality of discharge pipes are evenly distributed on the circumference of the upper end of the heating box. The discharge pipes are arranged obliquely above the crucible. The pressure cover is a hollow structure, and the drop points of the discharge pipes correspond to the hollow structure of the pressure cover.

6. The recycled aluminum waste sampling and detection equipment according to claim 2, characterized in that: A cooling cylinder is provided on the bottom wall of the second mounting hole, and two cooling pipes are provided on the cooling cylinder, and the cooling pipes pass through the outside of the operating table; a first limiting ring is provided at the bottom end of the guide rod, and a bottom cover is slidably provided on the outside of the guide rod, and a third spring is sleeved on the guide rod between the bottom cover and the first limiting ring, the upper half of the second mold is provided in the stepped through hole, and the lower half of the second mold is provided in the cooling cylinder, and the third spring tends to cause the bottom cover to be set close to the cooling cylinder.

7. The recycled aluminum waste sampling and detection equipment according to claim 6, characterized in that: A second limiting ring is provided at the bottom end of the second ejector pin, and a fourth spring is sleeved on the second ejector pin between the first limiting ring and the second limiting ring. The fourth spring forces the second mold to move upward and fit closely with the second ejector pin.

8. The recycled aluminum waste sampling and detection equipment according to claim 2, characterized in that: A hydraulic cylinder is provided at the upper end of the operating platform, and the hydraulic cylinder is used to drive the pressure head to descend; a pneumatic cylinder is provided at the bottom end of the operating platform, and the pneumatic cylinder is used to drive the second push rod to rise and fall.

9. A method for sampling and testing using the recycled aluminum waste sampling and testing equipment according to any one of claims 1 to 8, characterized in that: Here are the steps: S1, putting powdered aluminum scrap into a first mold from a first sampling port, controlling the pressing head to descend and apply pressure, and using a pressing method to press out a first sample; S2, energizing the heating coil to preheat the crucible and heat the first mold at the same time, so that the pressed first sample is heated to a temperature that is easy to demold; S3, controlling the second push rod to rise until the second push rod abuts against the first push rod, pushing the first push rod to rise, thereby demolding the first sample, and taking the first sample out from the first sampling port after demolding; In step S4, the second ejector pin descends and resets, and the pressure head descends, pushing the first mold and the gland downward, causing the blocking rod to close the discharge port. Crumb-like aluminum scrap is then placed into the crucible through the discharge pipe, and the heating coil is energized to melt it. Then, the pressure head ascends, the blocking rod ascends and resets, opening the discharge port, and the high-temperature molten metal is discharged into the second mold. S5, ventilate and cool the cooling cylinder, use the remelting method to make the second sample, control the second ejector pin to rise, and realize the demoulding of the second sample.

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