Waste sampling and detecting equipment and method for secondary aluminum

Abstract

The invention belongs to the technical field of sampling detection, and particularly relates to waste sampling detection equipment and method for secondary aluminum, the waste sampling detection equipment comprises a heating box and a crucible, the crucible is arranged in the heating box, the upper end of a support frame is provided with a gland, a first mold is arranged on the gland, and the upper side of the first mold is provided with a liftable pressure head; the bottom end of the first mold integrally extends to be provided with a blocking rod, the bottom end of the crucible is provided with a discharge port, the bottom end of the blocking rod is connected with the discharge port in a matched mode, and the inner wall of the blocking rod is provided with a first ejector rod in a matched mode. And a second mold is arranged on the bottom side of the crucible, a guide rod is integrally arranged at the bottom end of the second mold in an extending mode, a second ejector rod is arranged on the inner wall of the guide rod in a matched mode, the second ejector rod can ascend to demold the second mold, and the second ejector rod can ascend to abut against the first ejector rod to demold the first mold. The equipment is used for respectively sampling different types of aluminum wastes by a pressing method and a remelting method, and is small in occupied area, simple to operate, convenient to demould and high in sampling efficiency.

Description

Technical Field

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

[0002] The new technology of low-carbon recycled aluminum and environmentally friendly plate materials 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 recycled aluminum smelting process; 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 studying high-precision component ratio control technology, it is necessary to study the rapid and accurate detection methods of the chemical composition of recycled aluminum to provide conditions for the selection and matching of furnace materials, especially for different types of recycled aluminum, using cutting, remelting, pressing and other suitable methods to take samples and test, and provide accurate chemical composition data. According to the chemical composition of various waste materials, and considering various factors such as the composition of miscellaneous materials, weight estimation deviation, element loss, etc., calculate the dosage combination of various waste materials, aluminum ingots, and aluminum liquid, and maximize the waste dosage on the basis of ensuring that the chemical composition is qualified.

[0004] At present, for different types of recycled aluminum waste, due to the different types of waste, their shapes and volumes are also different, such as: aluminum alloy plates, bars, wires, trimmings, aluminum foil waste rolls, aluminum chips, aluminum powder, etc., operators need to distinguish the types of waste, 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 view of the technical problems existing in the background technology, the present invention provides a sampling and detection device and method for waste used for recycled aluminum.

[0006] To achieve the above purpose, the technical solution provided by the present invention is: A waste sampling and testing device for recycled aluminum comprises a heating box, a support frame, a first mold, a second mold, a crucible and a pressure head, wherein the support frame is arranged inside the heating box, the crucible is arranged inside the support frame, a pressure cover is arranged at the upper end of the support frame, the 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 can be matched and connected with the discharge port, and a first push rod is matched 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 push rod is matched on the inner wall of the guide rod, the second push rod can rise to demould the second mold, and the second push rod can rise to abut against the first push rod to demould the first mold.

[0007] 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, and 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, and a first spring is sleeved on the sliding rod between the slip ring and the heating box, and when the first spring is not under pressure, the blocking rod is lifted up to open the flow opening; 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, and 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, and a second spring is sleeved on the pressure rod between the crimping block and the operating cylinder, and 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.

[0008] Optionally, the waste sampling and testing equipment for recycled aluminum 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 plurality 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.

[0009] 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 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.

[0010] Optionally, a limiting groove cooperating with the pressure cover is provided at the upper end of the support frame, and when the pressure cover is tightly arranged in the limiting groove, the blocking rod is tightly arranged against the discharge port.

[0011] 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 obliquely arranged 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.

[0012] 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 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.

[0013] 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.

[0014] A method for sampling and detecting recycled aluminum waste, the steps are as follows: S1, putting powdered aluminum waste into a first mold from a first sampling port, controlling the pressure head to descend and apply pressure, and using a pressing method to press out a first sample; S2, the heating coil is energized 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 upward, pushing the first push rod to rise, and realizing demoulding of the first sample, and the first sample is taken out from the first sampling port after demoulding; S4, the second push rod descends and resets, the pressure head descends and pushes the first mold and the pressure cover downward, so that the blocking rod closes the discharge port, and the scrap aluminum waste is put into the crucible through the discharge pipe, and the heating coil is energized to melt; then, the pressure head rises, the blocking rod rises and resets to open 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 a second sample, control the second ejector pin to rise, and realize demoulding of the second sample.

[0015] The present invention has the following advantages and beneficial effects: The present invention designs a waste sampling and detection equipment for recycled aluminum, which can be used to recycle and sample different types of aluminum waste. The integrated equipment can realize sampling by pressing method and remelting method. The equipment occupies a small area, is easy to operate, is easy to demould, and has high sampling efficiency.

[0016] 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. The sampling and sample preparation equipment arranged vertically can select the corresponding mold for sampling according to the type of aluminum waste, and use the crucible to realize the discharge of metal solution. At the same time, the first mold can be heated 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 double molds with a single drive. The overall structure is simple and compact, and the sampling efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the structural diagrams of the waste sampling and testing equipment for recycled aluminum in the present invention; Figure 2 This is the second structural diagram of the waste sampling and testing equipment for recycled aluminum in the present invention; Figure 3 for Figure 1 Left view of Figure 4 for Figure 1 Front view of Figure 5 for Figure 1 A partial enlarged view of point a in the middle; Figure 6 for Figure 3 Sectional view along the AA direction; Figure 7 for Figure 4 Cross-sectional view along the BB direction; Figure 8 for Figure 6 A cross-sectional view of the middle blocking rod rising to open the crucible discharge port; Fig. 9 It is an isometric cross-sectional view of a partial structure of the waste sampling and testing equipment for recycled aluminum in the present invention; Fig.10 It is an isometric side sectional view of the operating table in the present invention; Fig.11 This is one of the structural diagrams of the support frame in the present invention; Fig.12 This is the second structural diagram of the support frame in the present invention; Fig.13 It is a structural diagram of the heating box in the present invention; Fig.14 for Fig.13 A top view of Fig.15 is a cross-sectional view of the heating box in the present invention; Fig.16 It is a structural diagram of the gland in the present invention; Fig.17 A half-section view of the first mold in the present invention; Fig.18 A half-section view of the second mold of the present invention; Fig.19 It is a structural diagram of the second push rod in the present invention.

[0018] 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 groove, 2-support frame, 21-limiting groove, 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 joint, 93-spindle, 10-cylinder, 101-second piston rod, 102-connecting head, 103-oblique rib, 104-guide rod. DETAILED DESCRIPTION

[0019] 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 part of the embodiments of the present invention, rather than all the embodiments.

[0020] Example 1 like Figures 1 to 9 As shown, a waste sampling and detection device for recycled aluminum 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.

[0021] like Figures 1 to 9As 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 arranged coaxially, and the pressure head 8 and the first mold 6 are used to realize the pressure sample. A blocking rod 61 is integrally extended from the bottom end of the first mold 6, and a conical first plug 611 is arranged at the bottom end of the blocking rod 61. A conical discharge port 51 is arranged at the bottom end of the crucible 5, and 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, and 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, and the second plug 621 can be arranged in cooperation with the first valve hole 612. A second mold 7 is provided at the bottom side of the crucible 5, and a guide cylinder 71 is integrally extended and arranged at the bottom end of the second mold 7, and a second push rod 73 is arranged in cooperation with the inner wall of the guide cylinder 71, wherein a conical third plug 731 is provided at the upper end of the second push rod 73, and a conical second valve hole 711 is provided at the bottom end of the second mold 7, and the third plug 731 can be arranged in cooperation with the second valve hole 711. The first mold 6, the second mold 7 and the pressure head 8 are arranged coaxially, and the outer diameter of the third plug 731 is equal to or slightly smaller than the inner hole diameter of the plug rod 61, and the second push rod 73 can rise to demould the second mold 7, and the second push rod 73 can rise to the inside of the plug rod 61 and abut against the first push rod 62 to demould the first mold 6.

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

[0023] 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 sample preparation 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, the first mold 6 can be heated to facilitate demolding. The first mold 6 realizes pressing demolding, and the second mold 7 realizes molding demolding. This linkage demolding structure can realize the demolding of double molds with a single drive. The overall structure is simple and compact, and the sampling efficiency is high.

[0024] Example 2 like Figures 1 to 19As shown, in the present invention, a plurality of slide bars 43 are evenly distributed on the upper end of the gland 4, a slip ring 45 is arranged on the upper end of the slide bar 43, an operating cylinder 32 is arranged on the upper end of the heating box 3, a slide hole 36 corresponding to the slide bar 43 is arranged on the upper end of the heating box 3, the slide hole 36 is opened on the outer side of the operating cylinder 32, the slide bar 43 passes through the slide hole 36 on the upper end of the heating box 3, the slip ring 45 slides close to the outer wall of the operating cylinder 32, and a first spring 44 is sleeved on the slide bar 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 flow opening 51 (such as 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, and materials can be put in or pressed samples can be taken out through the first sampling port 34.

[0025] In this structure, when the pressure head 8 is pressed down, the first mold 6, the pressure cover 4 and the blocking rod 61 can be driven to descend as a whole, and the discharge port 51 can be closed, so that the metal in the crucible 5 can be heated and melted; when the pressure head 8 is released from pressure, the pressure head 8 and the pressure cover 4 are both raised and reset, driving the blocking rod 61 to rise and open the discharge port 51, so that the molten metal liquid can be put into the second mold 7 at the bottom. Without using other driving mechanisms, the lifting and lowering of the pressure head 8 can realize the melting of metal and the discharge operation of the crucible 5, and the pressure head 8 and the first mold 6 can be used to realize the compression sampling.

[0026] Example 3 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 in sequence, and the first mounting hole 11, the stepped through hole 13 and the second mounting hole 14 are coaxially arranged, and a plurality of annular side blocks 22 are evenly distributed at the bottom end of the support frame 2, and a bottom ring 23 is arranged at the bottom end of the plurality of side blocks 22, and the bottom ring 23 is 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, so that the crucible 5 is tightly installed, and the heating box 3 is sleeved on the outer side 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, so as to realize the installation of the heating box 3. The second mold 7 is arranged in the stepped through hole 13. The stepped through hole 13 includes two hole sections with different diameters. The diameter of the lower hole section is larger than that of the upper hole section. The second mold 7 is arranged in the lower hole section of the stepped through hole 13. A center hole 24 is arranged at the center of the bottom ring 23. The bottom end of the center hole 24 is aligned with the stepped through hole 13. The crucible 5, the support frame 2, the first mold 6, and the second mold 7 are coaxially installed. In this way, after the blocking rod 61 opens the discharge port 51, the metal liquid in the crucible 5 can reach the inside of the second mold 7 through the discharge port 51, the center hole 24, and the stepped through hole 13.

[0027] like Figure 6 , Fig.10 , Fig.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, thereby realizing the limited installation of the support frame 2.

[0028] 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 out 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, so it needs to be made of high-strength and high-temperature resistant materials, so that the support frame 2 protects the inner crucible 5. 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 crushing the crucible 5.

[0029] 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. Such a 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.

[0030] 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 gland 4 is a hollow structure. The discharge point of the discharge pipe 35 corresponds to the hollow structure of the gland 4, so that the material can be put into the crucible 5 for melting. When the heating coil 37 is powered on for heating, an exhaust gas collection device is externally connected to the discharge pipe 35 to achieve flue gas purification and recovery. Specifically, the hollow structure of the gland 4 is as follows: a plurality of connecting blocks 41 are evenly distributed inside the gland 4, and the plurality of connecting blocks 41 are connected to a support ring 42 to form a hollow structure. The first mold 6 is arranged on the support ring 42, and the blocking rod 61 passes downward from the inner wall of the support ring 42.

[0031] Example 4 like Figures 1 to 19 As shown, the present invention also designs a cooling mechanism to cool and mold 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 arranged on the cooling cylinder 16, and the cooling pipes 17 pass through the outside of the operating table 1 and are externally connected to 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 slidably 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.

[0032] 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 forces the second mold 7 to move upward and fit closely with the second push rod 73 .

[0033] In the present invention, when the second mold 7 is installed, first, the existence 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, and the conditions for passing the molten metal are met. Then the second push rod 73 is raised 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 stiffness coefficient of the fourth spring 74 is much larger than the stiffness coefficient 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 raised relative to the second mold 7, which will cause the bottom side of the second mold 7 to be poorly sealed and leak the molten metal.

[0034] This structure uses the second ejector pin 73 to realize the installation and disassembly of the second mold 7, and uses the second ejector pin 73 to realize the molding and demolding of the second mold 7, and has multiple functional options; and the second mold 7 is cooled and molded by using the liftable bottom cover 75 in conjunction with the cooling cylinder 16. The overall structure is ingenious, which is convenient for realizing cooling molding, demolding after molding, and the second mold 7 is lowered away from the cooling cylinder 16 after demolding, so that the sample in the second mold 7 can be taken out. The bottom side of the operating table 1 is provided with a second sampling port 141 connected to the second mounting hole 14. When the second sample in the second mold 7 is cooled and molded, the second ejector pin 73 directly pushes up to realize the separation of the second sample from the second mold 7, and then the second ejector pin 73 descends, driving the second mold 7, the bottom cover 75 and the second sample to descend as a whole, away from the cooling cylinder 16, and after reaching the position of the second sampling port 141, a person holds a tool to clamp the second mold 7 and presses it down, so that the demolded second sample can be ejected from the second mold 7.

[0035] Example 5 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 realize the descent of the pressure head 8.

[0036] In the present invention, two groups of waste sampling and testing equipment for recycled aluminum (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 groups of equipment, a rotating sleeve 18 is provided between the two first mounting holes 11, and the bottom end of the mandrel 93 is rotatably provided inside the rotating sleeve 18. By rotating the mandrel 93, the 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 also provided on one side of the operating table 1, and a cutting device can be provided on this side, and the hydraulic cylinder 9 and the crimping head 92 are used to fix and press the plate, and the cutting method is used for sample preparation. In this way, a variety of sample preparation equipment can be integrated, and the function of coexisting with a variety of sample preparations can be combined.

[0037] In the present invention, a cylinder 10 is provided at the bottom end of the operating table 1, and a second piston rod 101 is provided in the cylinder 10. The two ends of the second piston rod 101 are detachably connected to the second push rod 73 through a connector 102, and the cylinder 10 is used to drive the second push rods 73 on both sides to rise and fall. The cylinder 10 is extended and retracted to realize the lifting and lowering of the second push rod 73, and the demoulding of the first mold 6 and the second mold 7 is realized. The two sides of the second piston rod 101 are connected and fixed by oblique ribs 103, and the oblique ribs 103 are provided with guide rods 104. The guide rods 104 are slidably arranged on the inner wall of the operating table 1, and the guide cylinder 71 is used to realize precise sliding guidance.

[0038] Example 6 A method for sampling and detecting recycled aluminum waste, the steps are as follows: S1, put the powdered aluminum waste into the first mold 6 from the first sampling port 34, control the pressure head 8 to descend and apply pressure, and use the pressing method to press out the first sample.

[0039] S2, the heating coil 37 is energized to preheat the crucible 5 and heat the first mold 6 at the same time, so that the first sample after pressing is kept at a certain temperature. Here, the purpose of preheating the crucible 5 is to avoid direct high-temperature heating causing thermal stress on the inner wall of the crucible 5, causing the crucible 5 to crack or be damaged; at the same time, 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 arranged on the support frame 2. There is a cavity 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 keep the first sample after pressing at a certain temperature, which is convenient for demolding, especially suitable for temperature-sensitive metal powders (such as aluminum, magnesium, etc.).

[0040] 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, and realizing demoulding of the first sample. After demoulding, the first sample is taken out from the first sampling port 34.

[0041] 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 to descend, 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; then, the pressure head 8 rises, the blocking rod 61 rises and resets to open the discharge port 51, and the high-temperature molten metal is discharged into the second mold 7.

[0042] S5, ventilate and cool the cooling cylinder 16, use the remelting method to produce the second sample, control the second ejector pin 73 to rise, and realize demoulding of the second sample. When the second sample is separated from the second mold 7, lower the second ejector pin 73 to make the second mold 7 reach the second sampling port 141, and then use a tool to lower the second mold 7 relative to the second ejector pin 73 to eject the second sample in the second mold 7.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waste sampling and testing device for recycled aluminum, 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 arranged on the upper end of the support frame, the 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 can be connected 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, a second ejector rod is provided on the inner wall of the guide rod, the second ejector rod can rise to demould the second mold, and the second ejector rod can rise to abut against the first ejector rod to demould the first mold.

2. The recycled aluminum waste sampling and detection equipment according to claim 1 is characterized in that: A plurality of sliding rods are evenly distributed on the upper end of the pressure cover, and a slip ring is arranged on the upper end of the sliding rod. An operating cylinder is arranged on the upper end of the heating box, and 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, and a first spring is sleeved 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 opening; 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 arranged on the upper end of the pressure rod. A second spring is sleeved 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 opened on one side of the operating cylinder.

3. The recycled aluminum waste sampling and detection equipment according to claim 2 is 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, a plurality of annular side blocks are evenly distributed on the bottom end of the support frame, a bottom ring is provided at the bottom end of the side block, the bottom ring is arranged close to the first mounting hole, the bottom end of the crucible is supported on the bottom ring, 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.

4. The waste sampling and detection equipment for recycled aluminum according to claim 3 is 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.

5. The recycled aluminum waste sampling and detection equipment according to claim 3 is characterized in that: The upper end of the support frame is provided with a limiting groove matched 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.

6. The recycled aluminum waste sampling and detection equipment according to claim 3 is 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 tiltedly arranged above the crucible. The gland is a hollow structure, and the drop points of the discharge pipes correspond to the hollow structure of the gland.

7. The recycled aluminum waste sampling and detection equipment according to claim 3 is 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 extend out 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 outer side 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 make the bottom cover close to the cooling cylinder.

8. The recycled aluminum waste sampling and detection equipment according to claim 7, characterized in that: A second limiting ring is arranged 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. The fourth spring forces the second mold to move upward and closely fit with the second push rod.

9. The recycled aluminum waste sampling and detection equipment according to claim 3 is characterized in that: A hydraulic cylinder is arranged at the upper end of the operating platform, and the hydraulic cylinder is used to drive the pressure head to descend; and an air cylinder is arranged at the bottom end of the operating platform, and the air cylinder is used to drive the second push rod to rise and fall.

10. A method for sampling and testing using the recycled aluminum waste sampling and testing equipment according to any one of claims 1 to 9, characterized in that: Here are the steps: S1, putting powdered aluminum waste into a first mold from a first sampling port, controlling the pressure head to descend and apply pressure, and using a pressing method to press out a first sample; S2, the heating coil is energized 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 upward, pushing the first push rod to rise, and realizing demoulding of the first sample, and the first sample is taken out from the first sampling port after demoulding; S4, the second push rod descends and resets, the pressure head descends and pushes the first mold and the pressure cover downward, so that the blocking rod closes the discharge port, and the scrap aluminum waste is put into the crucible through the discharge pipe, and the heating coil is energized to melt; then, the pressure head rises, the blocking rod rises and resets to open 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 a second sample, control the second ejector pin to rise, and realize demoulding of the second sample.

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