A silicon carbide micro-powder large particle detector

Abstract

The application relates to the technical field of particle detection, and discloses a silicon carbide micro-powder large-particle detector, which comprises a machine body, the top cavity of the machine body is provided with a shafting adjusting device, the shafting adjusting device is assembled with a longitudinally-arranged detection mechanism through a bearing seat, the bottom of the detection mechanism is provided with a probe protection mechanism and a side-integrated linkage mechanism, and a trigger mechanism assembled on the machine body is arranged below the linkage mechanism; the feeding pipe is designed to tilt for feeding and to block the sieve holes through the blocking columns of the flow control plate, so that the material groove can efficiently receive materials; the oscillation driving mechanism drives the screening mechanism and the flow control mechanism to synchronously oscillate, micro-powder is uniformly dispersed, and material stacking is avoided; the sliding rod automatically slides off in a non-contact state, the elastic reset of the torsional spring hinge makes the protective cover close, and reliable protection is provided for the detector probe; the structure integrates automatic feeding, anti-piling and probe protection, can guarantee the uniformity of material distribution before detection, and can ensure the safety of the precision probe when the precision probe is idle.

Description

Technical Field

[0001] This invention relates to the field of particle detection technology, and more specifically to a detector for large particles in silicon carbide micro powder. Background Technology

[0002] Silicon carbide micro powder, as an important industrial material, is widely used in abrasives, ceramic reinforcement, semiconductor processing and other fields due to its high hardness, excellent wear resistance and chemical stability. This material is mainly obtained by ultra-fine grinding and classification of silicon carbide raw materials through special equipment (such as JZFZ equipment), and its composition is an inorganic compound of carbon and silicon.

[0003] In actual production, uneven particle size distribution often exists within the same product's particle size group, making it easy for large-particle-grade micro-powder mixtures to be mixed in. Such large-particle impurities can significantly reduce the finished quality of silicon carbide products, thus requiring strict monitoring of particle size groups using a particle size analyzer. Currently, the industry has solved some detection problems through technical means. For example, Chinese Patent No. CN220932706U discloses a diamond micro-powder large particle detection device, whose structure includes a base, outer shell, fixing plate, and detection probe. This device drives the first rotating shaft and support plate to rotate via a knob, and uses a first electric push rod to control the lifting and lowering of the dust cover to achieve physical protection of the detection probe and prevent micro-powder from splashing and sticking to the probe, thus avoiding inaccurate detection.

[0004] However, the existing technology has obvious drawbacks: the probe protection mechanism relies entirely on manual operation; operators need to manually turn on / off the knob and use the electric push rod to switch the protection status, and it cannot automatically activate or deactivate the protection according to the actual working conditions (such as shutdown or testing stage) during the testing process; this passive protection not only increases the complexity of operation, but may also lead to probe contamination or untimely protection due to human error, ultimately affecting the reliability of product quality control. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a large particle detector for silicon carbide micro powder, so as to solve the problem of how to realize the automatic switching of probe protection mode during the detection of silicon carbide micro powder particles, avoid reliance on manual operation, and improve detection efficiency and reliability.

[0006] The present invention provides the following technical solution: a large particle detector for silicon carbide micro powder, comprising a body, the top cavity of which is equipped with a shaft adjustment device, the shaft adjustment device being mounted with a longitudinally arranged detection mechanism via a support seat, the bottom of the detection mechanism being equipped with a probe protection mechanism and a side integrated linkage mechanism, and a trigger mechanism mounted on the body correspondingly arranged below the linkage mechanism; the detection mechanism includes a telescopic cylinder fixedly mounted on the support seat of the shaft adjustment device, the telescopic end of the telescopic cylinder being rigidly connected to an assembly shaft, the bottom end of the assembly shaft being fixedly mounted with a detector, the side wall of the assembly shaft being equipped with a linkage mechanism, and the probe protection mechanism being mounted at the probe at the bottom end of the detector; The probe protection mechanism includes a probe base fixedly installed at the bottom of the detector. A protective cover is provided inside the probe base. The mating end face of the protective cover and the probe base is hinged by a torsion spring hinge, so that the protective cover can be opened outward with the torsion spring hinge as the axis. At the same time, a fixed pulley is fixedly installed on the outer side wall of the probe base near the position of the torsion spring hinge. The linkage mechanism includes lateral supports symmetrically fixed on both sides of the assembly shaft. The lateral support near the fixed pulley is equipped with a telescopic mechanism consisting of a guide sleeve and a sliding rod: the guide sleeve is fixed to the top of the lateral support and forms a guide cavity, and the sliding rod is slidably assembled in the guide cavity; the end of the sliding rod near the detection mechanism is fixedly connected to a rope, and the rope is fixedly connected to the outside of the movable end of the protective cover after passing over the fixed pulley.

[0007] Furthermore, the bottom sides of the guide sleeve cavity and the top sides of the sliding rod are provided with mutually engaging limiting protrusions. When the sliding rod is fully retracted into the guide sleeve cavity, its bottom end face can form a seamless fit with the surface of the side support.

[0008] Furthermore, the torsion spring hinge includes a hinge body, a spring mechanism, and an adjustment device; when the torsion spring hinge moves within its rotation range, as long as it does not exceed its elastic threshold, after the pull on the protective cover is released, the elastic torsional force of the torsion spring hinge will drive it to close tightly inside the probe base.

[0009] Furthermore, a sliding frame is fixedly connected inside the bottom cavity of the machine body. The upper and lower rails of the sliding frame are linked to the screening mechanism and the flow control mechanism, respectively. The triggering mechanism extending longitudinally from the left and right ends of the machine body can directly abut the flow control mechanism, bypassing the screening mechanism. The triggering mechanism includes a guide groove rigidly connected to the front and rear walls of the machine body, and a sliding pressure block slidably connected between the guide grooves.

[0010] Furthermore, the length of the linkage mechanism along the x-axis and the width of the sliding block along the y-axis are designed to at least meet the requirements for adjusting the plane position of the detector. That is, when the detector moves within its plane adjustment area, the vertical projection of the linkage mechanism always falls above the sliding block.

[0011] Furthermore, the screening mechanism includes a material trough that is slidably connected to the slide rail on the sliding frame, with connecting shafts rigidly connected to its left and right ends. The connecting shafts pass through the friction rings on the side wall of the machine body along the axial direction. The surface of the guide groove is provided with strip-shaped through grooves for the connecting shafts to pass through. The bottom of the material trough is designed with arrayed screen holes. An oscillation drive mechanism is installed at the outer end of any connecting shaft.

[0012] Furthermore, the flow control mechanism includes a flow control plate located below the trough, and a support frame is provided below the flow control plate. Both the left and right ends are connected by dampers. The front and rear sides of the support frame are rigidly fixed to the sliding plates, which are slidably suspended in the upper slide rail of the sliding frame.

[0013] Furthermore, the flow control plate includes a support frame that matches the inner width of the sliding frame; a grid plate is installed inside the support frame, and a blocking column is rigidly fixed at the intersection of the grid, with the number and position of the blocking column corresponding one-to-one with the screen holes of the material trough; side wing plates are rigidly connected to both ends of the support frame, and the side wing plates are fixedly combined with the telescopic end of the damper.

[0014] Furthermore, a magnetic suction component is added to the middle of the outer wall of the side plate and the inner wall of the machine body to provide directional constraint for the flow control mechanism through the magnetic suction structure; the bottom end of the sliding pressure block is equipped with a guide wheel, and the top wall of the side plate is provided with a track matching the guide wheel.

[0015] Furthermore, during the oscillation period, the bottom end of the sliding block of the side wing plate always maintains sliding contact with its track, and the left and right side walls of the body are provided with openings for the side wing plate, damper and support frame to pass through.

[0016] The technical effects and advantages of this invention are as follows: 1. This invention utilizes an inclined feed pipe and a flow control plate with a blocking column to block the sieve holes, enabling efficient material reception in the trough. The oscillation drive mechanism drives the sieving mechanism and flow control mechanism to oscillate synchronously, achieving uniform dispersion of micro-powder and preventing material accumulation. The sliding rod automatically slips out in a non-contact state, and the elastic reset of the torsion spring hinge closes the protective cover, providing reliable protection for the detector probe. This structure integrates automatic feeding, anti-accumulation material distribution, and probe protection, ensuring both uniform material distribution before detection and the safety of the precision probe when idle.

[0017] 2. This invention utilizes the coordinated operation of the detection mechanism, probe protection mechanism, and linkage mechanism; after the sliding rod contacts the triggering mechanism, it triggers a self-retracting and protective cover flipping mechanism to ensure that the detector probe is unobstructed; when the sliding block is pressed down to drive the sieve hole to open, the oscillation and separation of the material trough allows small particles to pass through the grid plate efficiently; the lateral support presses the triggering mechanism to maintain the sieve hole in the open state, and in conjunction with the x / y axis adjustment of the detector, the particle size parameters of large silicon carbide particles in the material trough can be quickly and accurately detected; this design realizes the automation of the detection process, and the simultaneous performance of sieving and measurement, significantly improving detection efficiency and accuracy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram illustrating the structural state analysis of the probe under the blocking mode of the present invention.

[0020] Figure 3 For the present invention Figure 2 A schematic diagram of the connection structure between the testing mechanism and the linkage mechanism.

[0021] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at point A in the middle.

[0022] Figure 5 For the present invention Figure 2 A schematic diagram of the lower cavity of the body and its internal connecting structure.

[0023] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point B.

[0024] Figure 7 This is a schematic diagram of the connection structure between the sliding frame and the screening mechanism of the present invention.

[0025] Figure 8 This is a schematic diagram of the connection structure between the sliding frame and the flow control mechanism of the present invention.

[0026] Figure 9 This is a front view schematic diagram of the connection structure between the oscillation drive mechanism and the connecting shaft of the present invention.

[0027] Figure 10 This is a rear-view schematic diagram of the connection structure between the oscillation drive mechanism and the connecting shaft of the present invention.

[0028] Figure 11 This is a schematic diagram illustrating the structural state analysis under the particle detection mode of the present invention.

[0029] Figure 12 For the present invention Figure 11 Schematic diagram of the structure at point C.

[0030] The attached figures are labeled as follows: 1. Machine body; 2. Shaft adjustment device; 3. Detection mechanism; 31. Telescopic cylinder; 32. Assembly shaft; 33. Detector; 4. Probe protection mechanism; 41. Probe base; 42. Protective cover; 43. Torsion spring hinge; 44. Fixed pulley; 45. Rope; 5. Linkage mechanism; 51. Lateral support; 52. Guide sleeve; 53. Sliding rod; 6. Screening mechanism; 61. Material trough; 62. Connecting shaft; 7. Sliding frame; 8. Flow control mechanism; 81. Flow control plate; 811. Support frame; 812. Mesh plate; 813. Blocking column; 814. Side wing plate; 82. Damper; 83. Support frame; 84. Side slide plate; 9. Triggering mechanism; 91. Sliding block; 92. Guide groove; 10. Oscillation drive mechanism; 101. U-shaped base; 102. Eccentric wheel; 103. Connecting pin; 104. Transmission loop; 105. Auxiliary shaft; 11. Magnetic suction component; 12. Receiving groove; 13. Feed pipe. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the morphologies of the various structures described in the following embodiments are merely illustrative. The large particle detector in silicon carbide micro powder involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Reference Figures 1-2 This invention provides a large particle detector for silicon carbide micro powder, comprising a body 1, the top cavity of which is equipped with a shaft adjustment device 2, the shaft adjustment device 2 being mounted with a longitudinally arranged detection mechanism 3 via a support seat; the bottom of the detection mechanism 3 is equipped with a probe protection mechanism 4 and a side integrated linkage mechanism 5; a sliding frame 7 is fixedly connected in the bottom cavity of the body 1, the upper / lower rails of the sliding frame 7 being linked to a screening mechanism 6 and a flow control mechanism 8 respectively; triggering mechanisms 9 extending longitudinally from the left and right ends of the body 1 can bypass the screening mechanism 6 and directly abut against the flow control mechanism 8.

[0033] In this embodiment, it should be noted that the shaft system adjustment device 2 includes an X-axis adjustment part and a Y-axis adjustment part. The position of the bearing seat is precisely adjusted by the planar axial drive of the shaft system transmission mechanism, that is, the linkage displacement of the X-axis and Y-axis, so as to adjust the planar position of the detection mechanism 3, the probe protection mechanism 4 and the linkage mechanism 5. The X / Y axis adjustment sections are responsible for left-right and forward-backward adjustment movements, respectively. These directions are defined by a right-handed Cartesian coordinate system and are mutually perpendicular. Each axis adjustment is equipped with a corresponding precision mechanical structure and servo system. For example, the X-axis adjustment section is responsible for left-right movement. The one-way lead screw in this section converts the rotational motion from the drive motor into linear motion of the worktable or workpiece in the horizontal direction. This conversion is achieved through the cooperation between the one-way lead screw and the nut seat. When the one-way lead screw rotates, the nut seat moves along the helix of the one-way lead screw. Since the nut seat is connected to the bearing seat, its connecting parts also move accordingly. In this article, all our discussions of positional relationships, including front-back, left-right, and right-side relationships, are based on... Figures 1-2 Defined from the perspective presented, these directional descriptions do not have actual geographical or physical meaning. They are merely a reference framework set up to help readers understand the content of the text more intuitively. In this way, we can more clearly show the relative positional relationship between the various parts, making the entire argument process easier to understand and follow. Please note that these custom directional markers are only for use within this article and do not represent any absolute direction or position in the real world.

[0034] Reference Figures 2-4 The detection mechanism 3 includes a telescopic cylinder 31 fixedly installed on the bearing seat of the shaft adjustment device 2. The telescopic end of the telescopic cylinder 31 is rigidly connected to the assembly shaft 32. The bottom end of the assembly shaft 32 is fixedly installed with a detector 33. The side wall of the assembly shaft 32 is equipped with a linkage mechanism 5. The probe end of the detector 33 is equipped with a probe protection mechanism 4. The probe protection mechanism 4 includes a probe base 41 fixedly installed at the bottom of the detector 33. A protective cover 42 is provided inside the probe base 41. The mating end face of the protective cover 42 and the probe base 41 is hinged by a torsion spring hinge 43, so that the protective cover 42 can be opened outward with the torsion spring hinge 43 as the axis. At the same time, a fixed pulley 44 is fixedly installed on the outer side wall of the probe base 41 near the position of the torsion spring hinge 43. The linkage mechanism 5 includes lateral supports 51 symmetrically fixed on both sides of the assembly shaft 32. The lateral support 51 near the fixed pulley 44 is provided with a telescopic mechanism consisting of a guide sleeve 52 and a sliding rod 53. The guide sleeve 52 is fixed to the top of the lateral support 51 and forms a guide cavity. The sliding rod 53 is slidably assembled in the guide cavity. The end of the sliding rod 53 near the detection mechanism 3 is fixedly connected to a rope 45. The rope 45 extends across the fixed pulley 44 and is finally fixedly connected to the outside of the movable end of the protective cover 42. When the sliding rod 53 has not yet contacted the sliding pressure block 91, the sliding rod 53 will freely slide off the guide sleeve 52 and release the rope 45 towards the protective cover 42. At this time, the protective cover 42 is tightly closed inside the probe base 41 under the elastic torsional force of the torsion spring hinge 43, thereby sealing and protecting the probe of the detector 33.

[0035] In this embodiment, it should be noted that a triggering mechanism 9 is arranged below the linkage mechanism 5 and mounted on the body 1. The triggering mechanism 9 includes a guide groove 92 rigidly connected to the front and rear walls of the body 1, and a sliding pressure block 91 slidably connected between the guide grooves 92. The bottom sides of the guide sleeve 52 and the top sides of the sliding rod 53 are provided with mutually engaging limiting protrusions to constrain the maximum extension stroke of the sliding rod 53 relative to the guide sleeve 52, and to effectively prevent the sliding rod 53 from accidentally coming out of the guide sleeve 52 in a suspended state. When the sliding rod 53 is completely retracted into the cavity of the guide sleeve 52, its bottom end face can form a seamless fit with the surface of the side bracket 51. This fit structure can effectively ensure that the symmetrically arranged side brackets 51 maintain strict motion synchronization when acting on the sliding block 91, and will not be interfered with by the telescopic mechanism on one side. The length of the linkage mechanism 5 along the x-axis and the width of the sliding block 91 along the y-axis are set to at least meet the requirements for adjusting the planar position of the detector 33. That is, when the detector 33 moves within its planar adjustment area, the vertical projection of the linkage mechanism 5 always falls above the sliding block 91, so as to ensure that when the detector 33 moves downward toward the detection area, the contact and pressing of the linkage mechanism 5 and the sliding block 91 will be reliably triggered, thereby achieving a precise mechanical linkage response. The torsion spring hinge 43 includes a hinge body, a spring mechanism, and an adjustment device. When the torsion spring hinge 43 moves within its rotation range, as long as it does not exceed its elastic threshold, after the pull on the protective cover 42 is released, the elastic torsional force of the torsion spring hinge 43 will drive it to close tightly inside the probe base 41. The hinge body consists of fixed and movable blades, connected by a pin to achieve rotation; the spring mechanism is the core power source: it usually uses a high-strength steel torsion spring (fitted onto the pin or independent shaft), which stores energy when opening and drives automatic closing when released; the adjustment device is integrated into the end or side of the spring box, and the spring preload is controlled by an adjusting screw (requires a special tool) to achieve functional adjustment; the core function is automatic closing: the spring releases stored energy to provide a stable closing force; the opening angle: the standard range usually covers 0°-165°.

[0036] Reference Figure 2 , Figures 5-12 The screening mechanism 6 includes a material trough 61 that is slidably connected to the slide rail on the sliding frame 7. Connecting shafts 62 are rigidly connected to its left and right ends. The connecting shafts 62 pass through the friction rings on the side wall of the machine body 1 along the axial direction. The surface of the guide groove 92 is provided with strip-shaped through grooves for the connecting shafts 62 to pass through, so as to eliminate motion interference. The bottom of the material trough 61 is designed with arrayed screen holes. An oscillation drive mechanism 10 is installed at the outer end of any connecting shaft 62 to drive the screening mechanism 6 to generate oscillation action. The flow control mechanism 8 includes a flow control plate 81 located below the trough 61, and a support frame 83 is provided below the flow control plate 81. The left and right ends of the two are connected by a damper 82. The front and rear sides of the support frame 83 are rigidly fixed to the sliding plate 84, which is slidably suspended in the upper slide rail of the sliding frame 7 to realize the overall suspension and positioning of the flow control mechanism 8.

[0037] In this embodiment, it should be noted that the oscillation drive mechanism 10 consists of a U-shaped base 101, an eccentric wheel 102, a connecting rod pin 103, a transmission loop 104, and an auxiliary shaft 105. The U-shaped base 101 is fixed to the outer wall of the machine body 1, and the eccentric wheel 102 is rotatably mounted in its middle. The connecting rod pin 103 is rigidly fixed to the outer edge of the front wall of the eccentric wheel 102 and inserted into the transmission loop 104. The two ends of the transmission loop 104 are rigidly connected to the connecting shaft 62 that passes through the U-shaped base 101 and the auxiliary shaft 105, respectively. When the motor drives the eccentric wheel 102 to rotate coaxially through the coupling, the connecting rod pin 103 moves in the transmission loop 104, forcing the transmission loop 104 to perform horizontal reciprocating motion, thereby periodically pulling the connecting shaft 62, and finally driving the material trough 61 to complete the screening operation. The flow control plate 81 includes a support frame 811, which matches the inner width of the sliding frame 7; a grid plate 812 is installed inside the support frame 811, and a blocking column 813 is rigidly fixed at the intersection of the grid. The number and position of the blocking column 813 correspond one-to-one with the screen holes of the material trough 61; the two ends of the support frame 811 are rigidly connected to the side wing plates 814, and the side wing plates 814 are fixedly combined with the telescopic end of the damper 82; when the sliding pressure block 91 is not subjected to external force, the elastic force of the damper 82 drives the flow control plate 81 to approach the bottom wall of the material trough 61, so that the blocking column 813 inserts into the screen hole of the material trough 61 to form a blockage. At this time, the material trough 61 maintains its complete material receiving function. When the screening mechanism 6 moves horizontally, it can carry the entire flow control mechanism 8 to move together. To ensure unobstructed connection between the blocking column 813 and the screen holes of the material trough 61 in each round, precise alignment between the two must be completed in advance. For this purpose, a magnetic suction element 11 is added to the middle of the outer wall of the side slide plate 84 and the inner wall of the machine body 1, providing directional constraint for the flow control mechanism 8 through the magnetic suction structure. A guide wheel is configured at the bottom of the sliding block 91, and a track matching the guide wheel is provided on the top wall of the side wing plate 814. When the sliding block 91 applies pressure, causing the flow control plate 81 to move downwards and separate from the bottom wall of the material trough 61, the flow control mechanism 8 moves relative to the sliding block 91 under the magnetic force of the magnetic suction element 11 and slides back to its initial position along the sliding frame 7. Simultaneously, the screening mechanism 6... The oscillating screening operation is maintained by the oscillating drive mechanism 10. In addition, this setting can effectively resist the downward action of the trigger mechanism 9 and the deviation caused by equipment vibration. When the oscillating drive mechanism 10 drives the material trough 61 to stop stably above the flow control plate 81, the elastic reset force of the damper 82 can accurately push the blocking column 813 back into the bottom screen hole of the material trough 61 to complete the sealing action. The axial length design of the side wing plate 814 must ensure that the bottom end of the sliding block 91 always maintains sliding contact with its track during the oscillation cycle to prevent the sliding block 91 from detaching from the surface of the side wing plate 814. In addition, the left and right side walls of the body 1 can be provided with openings for the side wing plate 814, damper 82 and support frame 83 to pass through, so as to ensure that there is no motion interference when the flow control plate 81, damper 82 and support frame 83 move horizontally (not shown in the figure); this is to meet the adaptation setting of the flow control mechanism 8 to move with the screening mechanism 6 in reciprocating oscillation. A receiving trough 12 is added inside the bottom cavity of the body 1, located below the support frame 83, to receive the sorted material from the sieve holes of the material trough 61; through the continuous oscillation of the material trough 61, large particles in the silicon carbide micro powder are intercepted, enabling the detector 33 to detect more intuitively, significantly improving detection efficiency and ease of operation. The rear side of the machine body 1 is provided with an inclined feed pipe 13 that extends to the top wall edge of the screening mechanism 6. The feed pipe 13 is connected to the material source through a conveying device (such as a conveyor belt).

[0038] Working principle of this invention: The feed source transports silicon carbide micro powder to one side of the feed pipe 13 via a conveying device. The micro powder is injected into the feed trough 61 through the inclined feed pipe 13. At this time, the flow control plate 81 suspended below the feed trough 61, under the elastic force of the damper 82, can cause the blocking column 813 to insert into the screen hole of the feed trough 61 to block it, so that the feed trough 61 has complete material receiving capacity to collect the falling material. In order to promote the diffusion of falling material, the oscillation drive mechanism 10 is activated to drive the screening mechanism 6 to oscillate left and right. Since the blocking column 813 is inserted into the screen hole of the feed trough 61, when the screening mechanism 6 moves horizontally, it can carry the flow control plate 81, damper 82, support frame 83 and side slide plate 84 to move together, so that the screening machine... Structure 6 and flow control mechanism 8 can synchronously oscillate horizontally along the upper / lower rails of sliding frame 7, thereby dispersing the micro-powder particles in trough 61 and effectively preventing local material accumulation, creating uniform material distribution conditions for subsequent particle detection; when sliding rod 53 has not yet contacted sliding pressure block 91, sliding rod 53 will freely slide off guide sleeve 52 and release rope 45 to the protective cover 42 side. At this time, the protective cover 42 is tightly closed inside the probe base 41 under the elastic torsional force of torsion spring hinge 43, thereby sealing and protecting the probe of detector 33, ensuring that detector 33 is protected in a timely manner when not in use; this stage is the probe blocking mode (marked in Figures 1-8 ); After the injection is completed, the telescopic end of the telescopic cylinder 31 drives the assembly shaft 32, detector 33, probe protection mechanism 4, and linkage mechanism 5 to move synchronously towards the detection area; after the bottom end of the sliding rod 53 contacts the trigger mechanism 9, it generates a reaction force to cause it to retract into the guide sleeve 52. At the same time, the sliding rod 53 lifts the rope 45 and applies an outward pulling force to make the protective cover 42 gradually unfold against the elastic torsional force of the torsion spring hinge 43 until the bottom wall of the sliding rod 53 is flush with the side bracket 51, at which point the protective cover 42 is completely flipped outward, ensuring that the bottom probe of the detector 33 is unobstructed; when the assembly shaft As the detector 32 continues to move downward into the detection area, the sliding rod 53 inside the guide sleeve 52 and the lateral support 51 press down on the sliding block 91, driving the sliding block 91 to slide down along the guide groove 92 and push the flow control plate 81 to compress the damper 82, so that the blocking column 813 is disengaged from the material trough 61 and the screen holes open; the material trough 61 only oscillates left and right under the drive of the oscillation drive mechanism 10, so that large particles are retained in the material trough 61 while small particles pass through the grid plate 812 and fall into the receiving trough 12; until the detector 33 probe reaches the lower baseline and the lateral support 51 reaches the upper baseline ( Figure 11 (Mark), the equipment is switched to particle detection mode. At this time, the x / y axis position of the detector 33 can be adjusted by the shaft adjustment device 2. Then the lateral support 51 continuously presses the trigger mechanism 9 to keep the blockage column 813 separated from the material tank 61, so that the required parameters such as the particle size of large particles in the silicon carbide micro powder in the material tank 61 can be quickly detected and obtained. After the detection of large particles of silicon carbide micro powder is completed, the oscillation drive mechanism 10 controls the material tank 61 to stop in the middle of the bottom cavity of the machine body 1, that is, directly above the flow control plate 81; the telescopic cylinder 31 then drives the assembly shaft 32, detector 33, probe protection mechanism 4, and linkage mechanism 5 to move upward and reset synchronously. The equipment executes the reverse action process: the sliding pressure block 91 first releases the pressure on the flow control plate 81, and the elastic reset force of the damper 82 pushes the blocking column 813 to re-insert into the bottom sieve hole of the material tank 61; during the continuous upward movement of the assembly shaft 32, the sliding rod 53 disengages from the guide sleeve 52 and releases the rope 45 to the protective cover 42 side. The elastic torsional force of the torsion spring hinge 43 drives the protective cover 42 to close tightly inside the probe base 41, and the equipment completely returns to its initial state. After the test is completed, empty the residual silicon carbide powder in the material tank 61 and the receiving tank 12, and load in a new batch of samples to repeat the above testing process.

[0039] The above is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, in accordance with the technical plan and its improved concept, should be included under the protection of the present invention.

Claims

1. A large particle detector for silicon carbide micro powder, comprising a body (1), the top cavity of which is equipped with a shaft adjustment device (2), the shaft adjustment device (2) being mounted with a longitudinally arranged detection mechanism (3) via a support seat, characterized in that: The bottom of the detection mechanism (3) is equipped with a probe protection mechanism (4) and a side integrated linkage mechanism (5). A trigger mechanism (9) mounted on the body (1) is arranged below the linkage mechanism (5). The detection mechanism (3) includes a telescopic cylinder (31) fixedly mounted on the bearing seat of the shaft adjustment device (2). The telescopic end of the telescopic cylinder (31) is rigidly connected to the assembly shaft (32). The bottom end of the assembly shaft (32) is fixedly mounted with a detector (33). The side wall of the assembly shaft (32) is equipped with a linkage mechanism (5). The probe protection mechanism (4) is mounted at the probe end of the detector (33). The probe protection mechanism (4) includes a probe base (41) fixedly installed at the bottom of the detector (33). A protective cover (42) is provided inside the probe base (41). The mating end face of the protective cover (42) and the probe base (41) is hinged by a torsion spring hinge (43), so that the protective cover (42) can be opened outward with the torsion spring hinge (43) as the axis. At the same time, a fixed pulley (44) is fixedly installed on the outer side wall of the probe base (41) near the position of the torsion spring hinge (43). The linkage mechanism (5) includes lateral supports (51) symmetrically fixed on both sides of the assembly shaft (32). The lateral support (51) near the fixed pulley (44) is provided with a telescopic mechanism consisting of a guide sleeve (52) and a sliding rod (53): the guide sleeve (52) is fixed to the top of the lateral support (51) and forms a guide cavity, and the sliding rod (53) is slidably assembled in the guide cavity; the end of the sliding rod (53) near the detection mechanism (3) is fixedly connected to the rope (45), and the rope (45) passes over the fixed pulley (44) and is fixedly connected to the outside of the movable end of the protective cover (42); A sliding frame (7) is fixedly connected in the bottom cavity of the body (1). The upper and lower rails of the sliding frame (7) are linked to the screening mechanism (6) and the flow control mechanism (8) respectively. The triggering mechanism (9) extending longitudinally from the left and right ends of the body (1) can pass over the screening mechanism (6) and directly abut against the flow control mechanism (8). The triggering mechanism (9) includes a guide groove (92) rigidly connected to the front and rear walls of the body (1) and a sliding pressure block (91) slidably connected between the guide groove (92).

2. The silicon carbide micro powder large particle detector according to claim 1, characterized in that: The bottom sides of the guide sleeve (52) and the top sides of the sliding rod (53) are provided with mutually meshing limiting protrusions. When the sliding rod (53) is completely retracted into the cavity of the guide sleeve (52), its bottom end face can form a seamless fit with the surface of the side bracket (51).

3. The silicon carbide micro powder large particle detector according to claim 2, characterized in that: The torsion spring hinge (43) includes a hinge body, a spring mechanism and an adjustment device. When the torsion spring hinge (43) moves within the rotation range, as long as it does not exceed its elastic threshold, after the pull on the protective cover (42) is removed, the elastic torsional force of the torsion spring hinge (43) will drive it to close tightly inside the probe base (41).

4. The silicon carbide micro powder large particle detector according to claim 1, characterized in that: The length of the linkage mechanism (5) along the x-axis and the width of the sliding block (91) along the y-axis are set to at least meet the planar position adjustment requirements of the detector (33). That is, when the detector (33) moves within its planar adjustment area, the vertical projection of the linkage mechanism (5) always falls above the sliding block (91).

5. The silicon carbide micro powder large particle detector according to claim 4, characterized in that: The screening mechanism (6) includes a material trough (61) that is slidably connected to the slide rail on the sliding frame (7), and a connecting shaft (62) is rigidly connected to its left and right ends. The connecting shaft (62) passes through the friction ring of the side wall of the machine body (1) along the axial direction. The surface of the guide groove (92) is provided with a strip-shaped through groove for the connecting shaft (62) to pass through. The bottom of the material trough (61) is designed with arrayed screen holes. An oscillation drive mechanism (10) is installed at the outer end of any connecting shaft (62).

6. The large particle detector in silicon carbide micro powder according to claim 5, characterized in that: The flow control mechanism (8) includes a flow control plate (81) located below the trough (61), and a support frame (83) is provided below the flow control plate (81). The left and right ends of the two are connected by a damper (82). The support frame (83) is rigidly fixed to the sliding plate (84) on the front and rear sides, and it is slidably suspended in the upper slide rail of the sliding frame (7).

7. The silicon carbide micro powder large particle detector according to claim 6, characterized in that: The flow control plate (81) includes a support frame (811) which matches the inner width of the sliding frame (7); a grid plate (812) is installed inside the support frame (811), and a blocking column (813) is rigidly fixed at the intersection of the grid. The number and position of the blocking column (813) correspond one-to-one with the screen holes of the trough (61); the two ends of the support frame (811) are rigidly connected to the side wing plates (814), and the side wing plates (814) are fixedly combined with the telescopic end of the damper (82).

8. The silicon carbide micro powder large particle detector according to claim 7, characterized in that: A magnetic suction component (11) is added to the middle of the outer wall of the side slide plate (84) and the inner wall of the body (1) to provide directional constraint for the flow control mechanism (8) through the magnetic suction structure; the bottom end of the sliding pressure block (91) is equipped with a guide wheel, and the top wall of the side wing plate (814) is provided with a track matching the guide wheel.

9. The silicon carbide micro powder large particle detector according to claim 8, characterized in that: During the oscillation period, the bottom end of the sliding block (91) of the side wing plate (814) always maintains sliding contact with its track. The left and right side walls of the body (1) are provided with openings for the side wing plate (814), damper (82) and support frame (83) to pass through.

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