Sample grinding and pressing device and method for high-purity germanium gamma spectrometer

Abstract

The invention relates to the technical field of sample grinding and pressing, and discloses a high-purity germanium gamma spectrometer sample grinding and pressing device and method.The high-purity germanium gamma spectrometer sample grinding and pressing device comprises a bottom plate, the bottom plate is provided with a supporting mechanism, and the supporting mechanism is used for supporting and installing a grinding cylinder, can grind substances and can control and adjust the grinding speed; the particle size of ground powder can be controlled, sample pressing and sample preparation are facilitated, and the grinding efficiency is high; according to the grinding and filtering device, powder obtained after grinding can be filtered, unqualified powder obtained after filtering continues to be ground, the qualified rate of the powder is guaranteed, knocking vibration is conducted in the grinding and filtering process, and the filtering efficiency and the grinding efficiency are improved; according to the device, sample pressing can be realized, and the height and density of sample pressing can be monitored and controlled in real time during sample pressing, so that the radionuclide activity intensity detection of different types of solid samples can be conveniently researched, and the data error caused by manual sample loading can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of sample grinding and pressing, and in particular relates to a sample grinding and pressing device and method for a high-purity germanium gamma spectrometer. Background Art

[0002] When using a high-purity germanium gamma spectrometer to detect radioactivity in samples, it is necessary to perform sample preparation pre-processing operations. The main purpose of this operation is to grind the sample into powder and then press it into a sample with a certain shape and height. The current production process is basically completed manually. When a large number of samples of different properties need to be tested, the manpower and time costs are too high, which is not conducive to obtaining relevant data of the target nuclide in the first time after sampling. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a high-purity germanium γ spectrometer sample grinding and pressing device and method, which effectively solves the problems mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-purity germanium γ spectrometer sample grinding and pressing device, comprising a base plate, a supporting mechanism is provided on the base plate, the supporting mechanism is used to support and install the grinding cylinder, the supporting mechanism is connected to a vibrating mechanism, the vibrating mechanism is used to vibrate the grinding cylinder for filtering, a filtering mechanism is provided in the grinding cylinder for filtering the ground powder, a grinding mechanism is connected to the grinding cylinder, the grinding mechanism is used to grind the sample into powder, the grinding cylinder is connected to an extraction mechanism, the extraction mechanism is used to extract the powder that is unqualified after filtering and grinding, for secondary grinding, a pressing mechanism is provided on the base plate, the pressing mechanism is used to press the ground powder, a monitoring mechanism is connected to the base plate, the monitoring mechanism is used to monitor the pressing process, and a control mechanism is connected to the base plate, the control mechanism is used to control the overall movement process.

[0005] Preferably, the grinding mechanism includes an annular cavity provided in the grinding cylinder, a grinding gear cavity provided in the grinding cylinder, the grinding gear cavity being communicated with the annular cavity, a grinding gear shaft being rotatably connected between the end walls of the grinding gear cavity, the grinding gear shaft being connected to a power output shaft of a grinding motor fixedly installed in the grinding cylinder, a grinding gear being fixedly connected to an outer surface of the grinding gear shaft, the grinding gear being meshed with a grinding annular rack, the grinding annular rack being rotatably installed on the end wall of the annular cavity, a grinding grid being fixedly connected to the inner surface of the grinding annular rack, a lifting frame being fixedly connected to the grinding cylinder, a lifting slot being provided on the lifting frame, a lifting screw being rotatably connected between the end walls of the lifting slot, the lifting screw being connected to a power output shaft of a lifting motor fixedly installed in the grinding cylinder, the lifting screw being threadedly connected to a lifting nut block slidably connected between the end walls of the lifting slot, and a lifting nut block being fixedly connected to an end wall of the lifting nut block The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket.

[0006] Preferably, the supporting mechanism comprises an electric turntable rotatably connected to the base plate, a plurality of supporting rods are evenly and fixedly connected to the upper part of the electric turntable, a mounting ring frame is fixedly connected to the upper end of the supporting rod, and the grinding cylinder is mounted on the inner side of the mounting ring frame.

[0007] Preferably, the vibration mechanism includes a vibration gear cavity provided in the mounting ring frame, a driving shaft is rotatably connected to the bottom wall of the vibration gear cavity, one end of the driving shaft is connected to the power output shaft of the vibration motor fixedly installed in the mounting ring frame, the other end of the driving shaft is fixedly connected to a vibration main gear, the vibration main gear is meshed with a vibration annular rack, the vibration annular rack is rotatably installed between the end walls of the vibration gear cavity, the vibration annular rack is meshed with a plurality of vibration sub-gears, the vibration sub-gears are fixedly installed on the outer surface of a camshaft, the camshaft is rotatably installed through the vibration gear cavity and the end wall of the cam cavity, the cam cavity is machined in the mounting ring frame on the upper side of the vibration gear cavity, a cam is fixedly connected to the upper end of the camshaft, the cam pushes a vibration slide bar to move, the vibration slide bar is slidably installed on the end wall of the cam cavity, a through hole for the sliding of the vibration slide bar is machined on the end wall of the cam cavity, a vibration spring is connected to the surface of the vibration slide bar, and the end of the vibration slide bar knocks the grinding cylinder to generate vibration.

[0008] Preferably, the filtering mechanism comprises a filter plate fixedly connected at a certain angle inside the grinding cylinder, a discharge hole is provided on the bottom wall of the grinding cylinder, a discharge pipe is connected to the discharge hole, and a discharge valve is fixedly connected to the end of the discharge pipe away from the grinding cylinder.

[0009] Preferably, the extraction mechanism includes a discharge channel that is machined through the end wall of the vibration gear cavity, the discharge channel is located on the upper side of the lowermost filter plate, the discharge channel is connected to the inside of an extraction box, the extraction box is fixedly mounted on the outer surface of the grinding cylinder, an extraction pump is connected to the extraction box, the input end of the extraction pump is connected to the inside of the extraction box, the output end of the extraction pump is fixedly connected to one end of an extraction pipe, the other end of the extraction pipe is connected to an entry channel, and the entry channel is machined through the end wall of the grinding cylinder on the upper side of the annular cavity.

[0010] Preferably, the sample pressing mechanism includes an L-shaped mounting frame symmetrically fixedly connected on the base plate, an air pressure pump mounting frame is fixedly connected between the L-shaped mounting frames, an air pressure pump is installed on the air pressure pump mounting frame, a pneumatic cylinder is fixedly connected to the lower part of the air pressure pump, a sample pressing plate is detachably connected to the lower end of the pneumatic cylinder, the sample pressing plate is pressed into a sample pressing tube, the sample pressing tube is detachably mounted on the base plate, and the sample pressing tube is located on the lower side of the air pressure pump.

[0011] Preferably, the monitoring mechanism includes a height adjustment frame fixedly connected to the base plate, the height adjustment frame is provided with a height adjustment slot, a height adjustment screw is rotatably connected between the end walls of the height adjustment slot, the height adjustment screw is dynamically connected to a height adjustment motor fixedly installed in the base plate, a height adjustment nut block is threadedly connected to the outer surface of the height adjustment screw, the height adjustment nut block is slidably connected between the end walls of the height adjustment slot, a movable plate is fixedly connected to the end wall of the height adjustment nut block, a monitoring probe is fixedly connected to the outer surface of the movable plate, the monitoring probe scans the height of the powder in the pressing cylinder and the height of the pressing sample, a groove is provided on the end wall of the movable plate, a height confirmation probe is installed in the groove, the height confirmation probe scans the scale bar, and the scale bar is provided on the end wall of the height adjustment frame.

[0012] Preferably, the control mechanism includes a control panel fixedly connected to the base plate, a control processor is provided in the control panel, a corresponding control program is provided in the control processor, a threading channel is provided in the base plate, a cable is passed through the threading channel, the cable includes a corresponding signal control line and a power transmission wire, one end of the signal control line is connected to the control processor, one end of the power transmission wire is connected to a socket, the socket is processed on the base plate, and the other end of the cable is connected to an electrical component in the device for powering the corresponding electrical component and performing signal control.

[0013] The present invention provides a method for grinding and pressing a sample for a high-purity germanium gamma spectrometer. Based on the above-mentioned high-purity germanium gamma spectrometer sample grinding and pressing device, the steps include: Step 1: Power on the entire device to move the control mechanism, thereby controlling the movement of the corresponding electrical components; Step 2: Add corresponding grinding materials into the grinding grid, and move the grinding mechanism to grind the grinding materials into powder; Step 3: The ground powder is filtered by a filtering mechanism and then enters the sample pressing cylinder; Step 4: During filtering, the extraction mechanism moves to extract the filtered powder for continued grinding and re-grinding of unqualified powder; Step 5: The vibration mechanism moves, thereby vibrating the grinding cylinder to increase the efficiency of filtering and grinding; Step 6: The sample pressing mechanism moves to compact the powder in the sample pressing cylinder; Step 7: Before pressing the sample, the support mechanism moves, thereby driving the grinding cylinder to rotate a certain angle to facilitate pressing the sample; Step 8: Monitor the movement of the mechanism to monitor the height of the sample in real time.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a high-purity germanium gamma spectrometer sample grinding and pressing device, which can realize grinding of materials, and can control and adjust the grinding speed, and can control the particle size of the ground powder, which is convenient for sample pressing and sample preparation, and greatly improves the efficiency of grinding and pressing.

[0015] 2. The present invention provides a high-purity germanium gamma spectrometer sample grinding and pressing device, which can filter the ground powder, filter out unqualified powder and continue grinding to ensure the qualified rate of the powder, and perform knocking and vibration during the grinding and filtering process to increase the efficiency of filtering and grinding.

[0016] 3. The present invention provides a sample grinding and pressing device for a high-purity germanium gamma spectrometer. During the sample detection process, the shape and density of the sample have a great influence on the data. The device can realize sample pressing, and during sample pressing, the height of the pressed sample can be monitored in real time, and the pressure of the pressed sample can be set constantly to reduce data errors caused by different pressures caused by manual sample loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0018] In the attached picture: Figure 1 It is a schematic diagram of the structure of a sample grinding and pressing device for a high-purity germanium γ spectrometer in the first direction of the present invention; Figure 2 It is a schematic diagram of the structure in the second direction of a sample grinding and pressing device for a high-purity germanium γ spectrometer in the present invention; Figure 3 It is a schematic diagram of the structure of the third direction of a sample grinding and pressing device for a high-purity germanium γ spectrometer in the present invention; Figure 4 It is a schematic diagram of the structure of a sample grinding and pressing device for a high-purity germanium γ spectrometer in the fourth direction of the present invention; Figure 5 It is a schematic diagram of the first partial structure of a sample grinding and pressing device for a high-purity germanium γ spectrometer in the present invention; Figure 6 It is a schematic diagram of the second partial structure of a sample grinding and pressing device for a high-purity germanium γ spectrometer in the present invention; Figure 7 It is a schematic diagram of the third partial structure of a sample grinding and pressing device for a high-purity germanium γ spectrometer in the present invention; Figure 8 It is a schematic diagram of the fourth partial structure of a sample grinding and pressing device for a high-purity germanium gamma spectrometer in the present invention; Fig. 9 It is a schematic diagram of the structure of the sample grinding and pressing device of a high-purity germanium γ spectrometer in the fifth direction of the present invention; Fig.10 for Fig. 9 Schematic diagram of the cross-sectional structure at AA in the middle; Fig.11 for Fig.10 Schematic diagram of the cross-sectional structure at the middle BB; Fig.12 for Fig.10 Schematic diagram of the cross-sectional structure at CC in the middle; Fig.13 for Fig.11 Schematic diagram of the cross-sectional structure at DD in the middle; Fig.14 for Fig.10 Schematic diagram of the cross-sectional structure at EE in the middle; Fig.15 for Fig.10 Schematic diagram of the cross-sectional structure at point F in the middle.

[0019] In the figure: 1-bottom plate, 2-electric turntable, 3-cable, 4-mounting ring frame, 5-extraction box, 6-extraction pump, 7-extraction tube, 8-lifting frame, 9-horizontal frame, 10-cover plate, 11-discharge pipe, 12-L-shaped mounting frame, 13-air pressure pump, 14-air pressure pump mounting frame, 15-control panel, 16-height adjustment frame, 17-jack, 18-moving plate, 19-monitoring probe, 20-sample pressing cylinder, 21-air pressure cylinder, 22-discharge valve, 23-support rod, 24-grinding shaft, 25-pulley shaft, 26-height adjustment slide, 27-height adjustment screw, 28-scale bar, 29-lifting slide, 30-lifting screw, 31-sample pressing plate, 32-cam, 33-camshaft, 34-vibration sub-gear, 35-vibration ring rack, 36-vibration Spring, 37-vibration slide bar, 38-vibration main gear, 39-drive shaft, 40-vibration motor, 41-discharge hole, 42-grinding gear shaft, 43-grinding gear, 44-grinding motor, 45-filter plate, 46-driving pulley, 47-belt, 48-driven pulley, 49-grinding spherical block, 50-grinding annular rack, 51-grinding grid, 52-lifting motor, 53-grinding gear cavity, 54-pulley cavity, 55-lifting nut block, 56-annular cavity, 57-discharge channel, 58-cam cavity, 59-vibration gear cavity, 60-height adjustment nut block, 61-threading channel, 62-entry channel, 63-connecting ring, 64-groove, 65-height confirmation probe, 66-spline cavity, 67-spline, 68-spline groove, 69-grinding cylinder. DETAILED DESCRIPTION

[0020] 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. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] like Figure 1-15 As shown, the present invention provides a high-purity germanium γ spectrometer sample grinding and pressing device, including a base plate 1, the base plate 1 is provided with a supporting mechanism, the supporting mechanism is used to support and install a grinding cylinder 69, the supporting mechanism is connected to a vibrating mechanism, the vibrating mechanism is used to vibrate the grinding cylinder 69 for filtering, a filtering mechanism is provided in the grinding cylinder 69 for filtering the ground powder, the grinding cylinder 69 is connected to a grinding mechanism, the grinding mechanism is used to grind the sample into powder, the grinding cylinder 69 is connected to an extraction mechanism, the extraction mechanism is used to extract the powder that is unqualified after filtering and grinding, for secondary grinding, a sample pressing mechanism is provided on the base plate 1, the sample pressing mechanism is used to press the ground powder, the base plate 1 is connected to a monitoring mechanism, the monitoring mechanism is used to monitor the pressing process, and the base plate 1 is connected to a control mechanism, the control mechanism is used to control the overall movement process.

[0022] Advantageously, the grinding mechanism includes an annular cavity 56 provided in the grinding cylinder 69, a grinding gear cavity 53 provided in the grinding cylinder 69, the grinding gear cavity 53 is communicated with the annular cavity 56, a grinding gear shaft 42 is rotatably connected between the end walls of the grinding gear cavity 53, the grinding gear shaft 42 is connected to the power output shaft of the grinding motor 44 fixedly installed in the grinding cylinder 69, a grinding gear 43 is fixedly connected to the outer surface of the grinding gear shaft 42, the grinding gear 43 is meshed with the grinding annular rack 50, and the grinding annular rack 50 is rotatably installed On the end wall of the annular cavity 56, a grinding grid frame 51 is fixedly connected to the inner surface of the grinding annular rack 50, a lifting frame 8 is fixedly connected to the grinding cylinder 69, a lifting chute 29 is provided on the lifting frame 8, a lifting screw rod 30 is rotatably connected between the end walls of the lifting chute 29, the lifting screw rod 30 is connected to the power output shaft of the lifting motor 52 fixedly installed in the grinding cylinder 69, the lifting screw rod 30 is threadedly connected to the lifting nut block 55 slidably connected between the end walls of the lifting chute 29, and a cross frame 9 is fixedly connected to the end wall of the lifting nut block 55. The cross frame 9 is slidably connected with the lifting frame 8, and a pulley cavity 54 is provided in the cross frame 9. The end wall of the pulley cavity 54 is rotatably connected with a grinding shaft 24, and the grinding shaft 24 extends to the lower side of the cross frame 9. The lower end of the grinding shaft 24 is fixedly connected with a grinding spherical block 49. The outer surface of the grinding shaft 24 on the upper side of the grinding spherical block 49 is rotatably connected with a connecting ring 63. The end wall of the connecting ring 63 is rotatably connected with a cover plate 10. The outer surface of the grinding shaft 24 in the pulley cavity 54 is fixedly connected with a driven pulley 48. The driven pulley 4 8 is connected to the driving pulley 46 through a belt 47, the driving pulley 46 is fixedly mounted on the outer surface of the pulley shaft 25, the pulley shaft 25 is rotatably mounted between the end walls of the pulley cavity 54, a spline cavity 66 is provided in the lower end of the pulley shaft 25, a spline 67 is fixedly connected to the end wall of the spline cavity 66, the spline 67 is inserted into the spline groove 68, the spline groove 68 is processed at the upper end of the grinding gear shaft 42, the grinding gear shaft 42 is inserted into the pulley shaft 25, and the cover plate 10 seals the upper side of the grinding cylinder 69; During operation, the grinding material is added into the grinding grid frame 51, and the lifting motor 52 is started, thereby driving the lifting screw 30 to rotate, thereby driving the lifting nut block 55 to move downward, thereby driving the cross frame 9 to move downward, thereby driving the grinding shaft 24 to move downward, thereby driving the grinding spherical block 49 to move downward to contact the grinding material and compact the grinding material. The cross frame 9 moves downward, thereby driving the pulley shaft 25 to move downward, thereby inserting the grinding gear shaft 42 into the spline cavity 66, and inserting the spline 67 into the spline groove 68. The grinding motor 44 is started, thereby driving the grinding gear shaft 42 to rotate, thereby driving the grinding gear 43 to rotate. The grinding gear 43 meshes with the grinding annular rack 50, thereby driving the grinding grid frame 51 to rotate, and the grinding gear shaft 42 rotates, thereby driving the pulley shaft 25 to rotate, thereby driving the driving pulley 46 to rotate, and the driving pulley 46 and the driven pulley 48 are connected and transmitted through the belt 47, thereby driving the grinding shaft 24 to rotate, thereby driving the grinding spherical block 49 to rotate, and the grinding spherical block 49 rotates in the opposite direction to the grinding grid frame 51, so as to better grind the material, and the ground powder enters the lower side of the grinding grid frame 51 through the grinding grid frame 51, and the cover plate 10 closes the grinding cylinder 69 to prevent the powder from splashing during grinding.

[0023] Advantageously, the support mechanism comprises an electric turntable 2 rotatably connected to the bottom plate 1, a plurality of support rods 23 are evenly and fixedly connected to the upper part of the electric turntable 2, a mounting ring frame 4 is fixedly connected to the upper end of the support rod 23, and the grinding cylinder 69 is mounted inside the mounting ring frame 4; During operation, the support rod 23 supports the mounting ring frame 4. When the powder enters the sample pressing cylinder 20, the electric turntable 2 is energized to make the electric turntable 2 rotate a certain angle, thereby driving the mounting ring frame 4 to rotate a certain angle, thereby driving the grinding cylinder 69 to rotate, thereby driving the discharge pipe 11 to rotate a certain angle and leave the upper side of the sample pressing cylinder 20 to facilitate sample pressing.

[0024] Advantageously, the vibration mechanism includes a vibration gear cavity 59 provided in the mounting ring frame 4, a driving shaft 39 is rotatably connected to the bottom wall of the vibration gear cavity 59, one end of the driving shaft 39 is connected to the power output shaft of the vibration motor 40 fixedly installed in the mounting ring frame 4, and the other end of the driving shaft 39 is fixedly connected to a vibration main gear 38, the vibration main gear 38 is meshed with a vibration annular rack 35, the vibration annular rack 35 is rotatably installed between the end walls of the vibration gear cavity 59, the vibration annular rack 35 is meshed with a plurality of vibration sub-gears 34, and the vibration sub-gears 34 are fixedly installed on the cam The outer surface of the shaft 33, the cam shaft 33 is rotatably installed between the vibration gear cavity 59 and the end wall of the cam cavity 58, the cam cavity 58 is processed in the mounting ring frame 4 on the upper side of the vibration gear cavity 59, the upper end of the cam shaft 33 is fixedly connected with a cam 32, the cam 32 pushes the vibration slide bar 37 to move, the vibration slide bar 37 is slidably installed on the end wall of the cam cavity 58, the end wall of the cam cavity 58 is processed with a through hole for the vibration slide bar 37 to slide, the surface of the vibration slide bar 37 is connected with a vibration spring 36, and the end of the vibration slide bar 37 knocks the grinding cylinder 69 to generate vibration; During operation, the vibration motor 40 is started, thereby driving the drive shaft 39 to rotate, thereby driving the vibration main gear 38 to rotate, the vibration main gear 38 is meshed with the vibration annular rack 35, thereby driving the vibration annular rack 35 to rotate, the vibration annular rack 35 is meshed with the vibration sub-gear 34, thereby driving the camshaft 33 to rotate, thereby driving the cam 32 to rotate, the cam 32 reciprocates to push the vibration slide bar 37 to move, so that the vibration slide bar 37 contacts the surface of the grinding cylinder 69, due to the action of the vibration spring 36, the vibration spring 36 is in a reciprocating process of compression and extension, so that the vibration slide bar 37 reciprocates and knocks the grinding cylinder 69, thereby increasing the efficiency of filtration and grinding.

[0025] Advantageously, the filtering mechanism comprises a filter plate 45 fixedly connected at a certain angle inside the grinding cylinder 69, a discharge hole 41 is provided on the bottom wall of the grinding cylinder 69, a discharge pipe 11 is connected to the discharge hole 41, and a discharge valve 22 is fixedly connected to the end of the discharge pipe 11 away from the grinding cylinder 69; During operation, after the ground powder is filtered through the filter plate 45, qualified powder passes through the filter plate 45 into the grinding cylinder 69 on the lower side of the filter plate 45, enters into the discharge pipe 11 through the discharge hole 41, opens the discharge valve 22, and enters into the sample pressing cylinder 20 through the discharge valve 22.

[0026] Advantageously, the extraction mechanism includes a discharge channel 57 that is machined through the end wall of the vibration gear cavity 59, the discharge channel 57 is located on the upper side of the lowest filter plate 45, the discharge channel 57 is communicated with the inside of the extraction box 5, the extraction box 5 is fixedly mounted on the outer surface of the grinding cylinder 69, the extraction box 5 is connected with an extraction pump 6, the input end of the extraction pump 6 is communicated with the inside of the extraction box 5, the output end of the extraction pump 6 is fixedly connected to one end of the extraction pipe 7, the other end of the extraction pipe 7 is communicated with the entry channel 62, the entry channel 62 is machined through the end wall of the grinding cylinder 69 on the upper side of the annular cavity 56; During operation, the unqualified powder particles filtered out enter the extraction box 5 through the discharge channel 57, and the extraction pump 6 is started to extract the powder particles in the extraction box 5, and enter the entry channel 62 through the extraction pipe 7, and then enter between the driven pulley 48 and the grinding grid 51 through the entry channel 62, so as to facilitate continued grinding.

[0027] Advantageously, the sample pressing mechanism comprises an L-shaped mounting frame 12 symmetrically fixedly connected to the bottom plate 1, an air pressure pump mounting frame 14 is fixedly connected between the L-shaped mounting frames 12, an air pressure pump 13 is installed on the air pressure pump mounting frame 14, an air pressure cylinder 21 is fixedly connected to the lower part of the air pressure pump 13, a sample pressing plate 31 is detachably connected to the lower end of the air pressure cylinder 21, the sample pressing plate 31 is pressed into the sample pressing cylinder 20, the sample pressing cylinder 20 is detachably mounted on the bottom plate 1, and the sample pressing cylinder 20 is located at the lower side of the air pressure pump 13; During operation, the air pressure pump 13 is started, and the air pressure pump 13 outputs a fixed air pressure value, thereby driving the air pressure cylinder 21 to move downward, so that the downward movement stroke of the air pressure cylinder 21 is fixed and limited, thereby driving the sample pressing plate 31 to move downward, so as to compact and compress the powder in the sample pressing cylinder 20. The sample pressing plate 31 and the sample pressing cylinder 20 can be replaced according to the required shape of the sample, and the sample pressing cylinder 20 is made of transparent material.

[0028] Advantageously, the monitoring mechanism comprises a height adjustment frame 16 fixedly connected to the base plate 1, the height adjustment frame 16 is provided with a height adjustment slot 26, a height adjustment screw 27 is rotatably connected between the end walls of the height adjustment slot 26, the height adjustment screw 27 is connected to the power of a height adjustment motor fixedly installed in the base plate 1, a height adjustment nut block 60 is threadedly connected to the outer surface of the height adjustment screw 27, the height adjustment nut block 60 is slidably connected between the end walls of the height adjustment slot 26, a moving plate 18 is fixedly connected to the end wall of the height adjustment nut block 60, a monitoring probe 19 is fixedly connected to the outer surface of the moving plate 18, the monitoring probe 19 scans the height of the powder in the sample pressing cylinder 20 and the height of the sample pressing, a groove 64 is provided on the end wall of the moving plate 18, a height confirmation probe 65 is installed in the groove 64, the height confirmation probe 65 scans the scale bar 28, and the scale bar 28 is arranged on the end wall of the height adjustment frame 16; During operation, the height adjustment motor is started to drive the height adjustment screw 27 to rotate, thereby driving the height adjustment nut block 60 to move, thereby driving the movable plate 18 to move, thereby driving the monitoring probe 19 to move, and the monitoring probe 19 monitors the position height of the pressing plate 31 at any time, and the height confirmation probe 65 scans the scale bar 28 to confirm the height of the sample after compaction.

[0029] Advantageously, the control mechanism includes a control panel 15 fixedly connected to the base plate 1, a control processor is provided in the control panel 15, a corresponding control program is provided in the control processor, a threading channel 61 is provided in the base plate 1, a cable 3 is threaded in the threading channel 61, the cable 3 includes a corresponding signal control line and a power transmission line, one end of the signal control line is connected to the control processor, one end of the power transmission line is connected to a jack 17, the jack 17 is processed on the base plate 1, and the other end of the cable 3 is connected to an electrical component in the device for powering and signal controlling the corresponding electrical component; During operation, the electric wire plug is inserted into the socket 17 to power the entire device, and the corresponding operation instructions are input on the control panel 15. After the control processor processes, a signal is sent, and the signal is transmitted to the corresponding electrical component through the signal line in the cable 3, so that the corresponding electrical component moves.

[0030] The present invention provides a method for grinding and pressing a sample for a high-purity germanium gamma spectrometer. Based on the above-mentioned high-purity germanium gamma spectrometer sample grinding and pressing device, the steps include: Step 1: Power on the entire device to move the control mechanism, thereby controlling the movement of the corresponding electrical components; Step 2: Add corresponding grinding materials into the grinding grid 51, and move the grinding mechanism to grind the grinding materials into powder; Step 3: The ground powder is filtered by a filtering mechanism and then enters the sample pressing cylinder 20; Step 4: During filtering, the extraction mechanism moves to extract the filtered powder for continued grinding and re-grinding of unqualified powder; Step 5: The vibration mechanism moves, thereby vibrating the grinding cylinder 69 to increase the efficiency of filtering and grinding; Step 6: The sample pressing mechanism moves to compact the powder in the sample pressing cylinder 20; Step 7: Before pressing the sample, the support mechanism moves, thereby driving the grinding cylinder 69 to rotate a certain angle to facilitate pressing the sample; Step 8: Monitor the movement of the mechanism to monitor the height of the sample in real time.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sample grinding and pressing device for a high purity germanium gamma spectrometer, characterized in that: The invention comprises a bottom plate (1), wherein a supporting mechanism is provided on the bottom plate (1), wherein the supporting mechanism is used to support and install a grinding cylinder (69), wherein a vibration mechanism is connected to the supporting mechanism, wherein the vibration mechanism is used to vibrate the grinding cylinder (69) for facilitating filtering, wherein a filtering mechanism is provided inside the grinding cylinder (69) for facilitating filtering of the ground powder, wherein a grinding mechanism is connected to the grinding cylinder (69), wherein the grinding mechanism is used to grind the sample into powder, wherein an extraction mechanism is connected to the grinding cylinder (69), wherein the extraction mechanism is used to extract the powder that fails to meet the grinding standard after filtering for facilitating secondary grinding, wherein a sample pressing mechanism is provided on the bottom plate (1), wherein the sample pressing mechanism is used to press the ground powder, wherein a monitoring mechanism is connected to the bottom plate (1), wherein the monitoring mechanism is connected to the bottom plate (1), wherein the monitoring mechanism is used to monitor the pressing process, and wherein a control mechanism is connected to the bottom plate (1), wherein the control mechanism is used to control the overall movement process.

2. The high purity germanium gamma spectrometer sample grinding and pressing device according to claim 1, characterized in that: The grinding mechanism comprises an annular cavity (56) provided in the grinding cylinder (69), a grinding gear cavity (53) provided in the grinding cylinder (69), the grinding gear cavity (53) being communicated with the annular cavity (56), a grinding gear shaft (42) being rotatably connected between the end walls of the grinding gear cavity (53), the grinding gear shaft (42) being connected to a power output shaft of a grinding motor (44) fixedly installed in the grinding cylinder (69), a grinding gear (43) being fixedly connected to the outer surface of the grinding gear shaft (42), the grinding gear (43) being meshed with a grinding annular rack (50), the grinding annular rack (50) being rotatably installed in the annular cavity (56) on the end wall, the inner surface of the grinding annular rack (50) is fixedly connected with a grinding grid frame (51), the grinding cylinder (69) is fixedly connected with a lifting frame (8), the lifting frame (8) is provided with a lifting chute (29), the end wall of the lifting chute (29) is rotatably connected with a lifting screw rod (30), the lifting screw rod (30) is connected to the power output shaft of the lifting motor (52) fixedly installed in the grinding cylinder (69), the lifting screw rod (30) is threadedly connected with a lifting nut block (55) slidably connected between the end walls of the lifting chute (29), the lifting nut block (55) is fixedly connected with a cross frame (9) on the end wall, the cross frame (9) The lifting frame (8) is slidably connected to the lifting frame (8), a pulley cavity (54) is provided in the horizontal frame (9), and a grinding shaft (24) is rotatably connected to the end wall of the pulley cavity (54), and the grinding shaft (24) extends to the lower side of the horizontal frame (9), and a grinding spherical block (49) is fixedly connected to the lower end of the grinding shaft (24), and a connecting ring (63) is rotatably connected to the outer surface of the grinding shaft (24) on the upper side of the grinding spherical block (49), and a cover plate (10) is rotatably connected to the end wall of the connecting ring (63), and a driven pulley (48) is fixedly connected to the outer surface of the grinding shaft (24) in the pulley cavity (54), and the driven pulley (48) is connected to the horizontal frame (9). The driving pulleys (46) are connected and driven by a belt (47). The driving pulley (46) is fixedly mounted on the outer surface of the pulley shaft (25). The pulley shaft (25) is rotatably mounted between the end walls of the pulley cavity (54). A spline cavity (66) is provided at the lower end of the pulley shaft (25). A spline (67) is fixedly connected to the end wall of the spline cavity (66). The spline (67) is inserted into a spline groove (68). The spline groove (68) is machined at the upper end of the grinding gear shaft (42). The grinding gear shaft (42) is inserted into the pulley shaft (25). The cover plate (10) seals the upper side of the grinding cylinder (69).

3. The high purity germanium gamma spectrometer sample grinding and pressing device according to claim 2, characterized in that: The support mechanism comprises an electric turntable (2) rotatably connected to the base plate (1), a plurality of support rods (23) being evenly and fixedly connected to the upper part of the electric turntable (2), a mounting ring frame (4) being fixedly connected to the upper ends of the support rods (23), and the grinding cylinder (69) being mounted inside the mounting ring frame (4).

4. The sample grinding and pressing device for high purity germanium gamma spectrometer according to claim 3, characterized in that: The vibration mechanism comprises a vibration gear cavity (59) provided in the mounting ring frame (4), a driving shaft (39) being rotatably connected to the bottom wall of the vibration gear cavity (59), one end of the driving shaft (39) being connected to a power output shaft of a vibration motor (40) fixedly mounted in the mounting ring frame (4), and the other end of the driving shaft (39) being fixedly connected to a vibration main gear (38), the vibration main gear (38) being meshed with a vibration annular rack (35), the vibration annular rack (35) being rotatably mounted between the end walls of the vibration gear cavity (59), the vibration annular rack (35) being meshed with a plurality of vibration sub-gears (34), and the vibration sub-gears (34) being fixedly mounted on a camshaft (33). The outer surface of the cam shaft (33) is rotatably installed between the end wall of the vibration gear cavity (59) and the cam cavity (58), the cam cavity (58) is processed in the mounting ring frame (4) on the upper side of the vibration gear cavity (59), the upper end of the cam shaft (33) is fixedly connected with a cam (32), the cam (32) pushes the vibration slide bar (37) to move, the vibration slide bar (37) is slidably installed on the end wall of the cam cavity (58), the end wall of the cam cavity (58) is processed with a through hole for the vibration slide bar (37) to slide, the surface of the vibration slide bar (37) is connected with a vibration spring (36), and the end of the vibration slide bar (37) knocks against the grinding cylinder (69) to generate vibration.

5. The sample grinding and pressing device for a gamma spectrometer according to claim 4, characterized in that: The filtering mechanism comprises a filtering plate (45) fixedly connected at a certain angle inside the grinding cylinder (69); a discharge hole (41) is provided on the bottom wall of the grinding cylinder (69); a discharge pipe (11) is connected to the discharge hole (41); and a discharge valve (22) is fixedly connected to the end of the discharge pipe (11) away from the grinding cylinder (69).

6. The sample grinding and pressing device for high purity germanium gamma spectrometer according to claim 5, characterized in that: The extraction mechanism comprises a discharge channel (57) which is machined through the end wall of the vibration gear cavity (59); the discharge channel (57) is located above the lowermost filter plate (45); the discharge channel (57) is connected to the inside of an extraction box (5); the extraction box (5) is fixedly mounted on the outer surface of the grinding cylinder (69); an extraction pump (6) is connected to the extraction box (5); the input end of the extraction pump (6) is connected to the inside of the extraction box (5); the output end of the extraction pump (6) is fixedly connected to one end of an extraction pipe (7); the other end of the extraction pipe (7) is connected to an inlet channel (62); the inlet channel (62) is machined through the end wall of the grinding cylinder (69) on the upper side of the annular cavity (56).

7. The sample grinding and pressing device for high purity germanium gamma spectrometer according to claim 6, characterized in that: The sample pressing mechanism comprises an L-shaped mounting frame (12) symmetrically fixedly connected to the base plate (1), an air pressure pump mounting frame (14) fixedly connected between the L-shaped mounting frames (12), an air pressure pump (13) installed on the air pressure pump mounting frame (14), a pneumatic cylinder (21) fixedly connected to the lower part of the air pressure pump (13), a sample pressing plate (31) detachably connected to the lower end of the pneumatic cylinder (21), the sample pressing plate (31) is pressed into a sample pressing cylinder (20), the sample pressing cylinder (20) is detachably mounted on the base plate (1), and the sample pressing cylinder (20) is located at the lower side of the air pressure pump (13).

8. The sample grinding and pressing device for high purity germanium gamma spectrometer according to claim 7, characterized in that: The monitoring mechanism comprises a height adjustment frame (16) fixedly connected to the base plate (1), the height adjustment frame (16) being provided with a height adjustment slot (26), a height adjustment screw rod (27) being rotatably connected between the end walls of the height adjustment slot (26), the height adjustment screw rod (27) being dynamically connected to a height adjustment motor fixedly installed in the base plate (1), a height adjustment nut block (60) being threadedly connected to the outer surface of the height adjustment screw rod (27), the height adjustment nut block (60) being slidably connected to the end wall of the height adjustment slot (26). A movable plate (18) is fixedly connected to the end wall of the height adjustment nut block (60), a monitoring probe (19) is fixedly connected to the outer surface of the movable plate (18), the monitoring probe (19) scans the height of the powder in the sample pressing cylinder (20) and the height of the sample pressing, a groove (64) is provided on the end wall of the movable plate (18), a height confirmation probe (65) is installed in the groove (64), the height confirmation probe (65) scans the scale bar (28), and the scale bar (28) is provided on the end wall of the height adjustment frame (16).

9. The sample grinding and pressing device for high purity germanium gamma spectrometer according to claim 8, characterized in that: The control mechanism comprises a control panel (15) fixedly connected to the base plate (1), wherein a control processor is provided in the control panel (15), wherein a corresponding control program is provided in the control processor, wherein a wire threading channel (61) is provided in the base plate (1), wherein a cable (3) is threaded in the wire threading channel (61), wherein the cable (3) comprises a corresponding signal control line and a power transmission line, wherein one end of the signal control line is connected to the control processor, and one end of the power transmission line is connected to a socket (17), wherein the socket (17) is processed on the base plate (1), and the other end of the cable (3) is connected to an electrical component in the device, and is used for supplying power to the corresponding electrical component and performing signal control.

10. A method for grinding and pressing a sample for a high-purity germanium gamma spectrometer, based on the device for grinding and pressing a sample for a high-purity germanium gamma spectrometer according to claim 9, characterized in that: include: Step 1: Power on the entire device to move the control mechanism, thereby controlling the movement of the corresponding electrical components; Step 2: Add corresponding grinding materials into the grinding grid (51), and move the grinding mechanism to grind the grinding materials into powder; Step 3: The ground powder is filtered by a filtering mechanism and then enters the sample pressing cylinder (20); Step 4: During filtering, the extraction mechanism moves to extract the filtered powder for continued grinding and re-grinding of unqualified powder; Step 5: The vibration mechanism moves, thereby vibrating the grinding cylinder (69) to increase the efficiency of filtering and grinding; Step 6: the sample pressing mechanism moves to compact the powder in the sample pressing cylinder (20); Step 7: Before pressing the sample, the support mechanism moves, thereby driving the grinding cylinder (69) to rotate a certain angle to facilitate pressing the sample; Step 8: Monitor the movement of the mechanism to monitor the height of the sample in real time.

Images