A particle size online detector

Abstract

The present invention relates to the field of particle size detection technology, and specifically to an online particle size detector, comprising: a base; a screening arrangement mechanism, the screening arrangement mechanism comprising an arc-shaped shell fixedly connected to the upper end surface of the base, one end of the arc-shaped shell is provided with a feeding assembly for spraying particles to be detected into the arc-shaped shell, the other end of the arc-shaped shell is provided with a vacuum cleaner and a laser scatterer in sequence, the inner arc surface of the arc-shaped shell and the feeding assembly is symmetrically provided with two air curtain assemblies for screening particles of different specifications, and the upper end surfaces of the opposite surfaces of the two air curtain assemblies are provided with fixed plates. Through the feeding assembly and the air curtain assembly in the screening arrangement mechanism, the distributed transmission of particle sizes and the screening of particles of different specifications can be realized, thereby ensuring that the particle size specifications entering the detector remain basically consistent, and by accurately controlling the airflow and particle size distribution, the detection error caused by particle mixing and agglomeration effect is reduced, making the detection result more reliable.

Description

Technical Field

[0001] The invention relates to the technical field of particle size detection, and in particular to an online particle size detector. Background Art

[0002] The online particle size detector is a device that monitors the size and distribution of particles in real time. It uses technologies such as laser scattering, light transmission or resistance to provide high-precision particle size analysis data. This instrument is widely used in the fields of pharmaceuticals, food, chemicals and mining. The automation function helps reduce manual intervention and improve production efficiency and quality control. For example, a particle size detection device disclosed in the Chinese patent with publication number CN116223321B.

[0003] When conducting particle size detection, the existing online particle size detector needs to transmit the particles to the detector through a transmission device for particle size detection, because the transmission device can reduce the direct contact between the sample and the environment, reduce the risk of contamination and cross-interference, and the existing online particle size detector usually transmits particles of different specifications at the same time when transmitting the particle size, and the particles of different specifications have different physical properties (such as particle size, shape and density) during the transmission process, resulting in inconsistent conveying speeds in the particle size transmission equipment, smaller particles are easier to flow, while larger particles are hindered when flowing, and larger particles rub against each other due to their large volume, generating static electricity and adsorbing smaller particles to form agglomerates, and the static electricity values ​​generated by the friction between the larger particles are inconsistent, resulting in different adsorption amounts of small particles by large particles, resulting in inconsistent agglomerate specifications, which in turn causes the detector to be unable to correctly detect the actual size of the particles, and thus causes the test results to deviate from the true value. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides an online particle size detector, which can effectively solve the problem in the prior art that particles of different specifications have different physical properties (such as particle size, shape and density) during the transmission process, resulting in inconsistent particle conveying speeds, friction between them, and static electricity forming agglomerations.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides an online particle size detector, comprising:

[0007] Base;

[0008] A screening and arranging mechanism, the screening and arranging mechanism comprises an arc-shaped shell fixedly connected to the upper end face of the base, one end of the arc-shaped shell is provided with a feeding assembly for spraying particles to be detected into the arc-shaped shell, the other end of the arc-shaped shell is provided with a vacuum cleaner and a laser scatterer in sequence, the inner arc surface of the arc-shaped shell at both sides of the feeding assembly is symmetrically provided with air curtain assemblies for screening particles of different specifications, the upper end faces of the two opposite surfaces of the air curtain assemblies are provided with fixed plates, the upper end faces of the fixed plates are provided with a plurality of shunt assemblies for dispersing and transmitting captured particles in a linear array, the lower end faces of each of the shunt assemblies are provided with a capturing assembly for capturing particles of different specifications, the upper end faces of the shunt assemblies are provided with two collecting assemblies and a collecting assembly, and the collecting assembly is located between the two collecting assemblies, and the inner top of the arc-shaped shell is fixedly connected with a collecting pipe connected with the collecting assembly;

[0009] Among them, the collecting component can further disperse and transmit the particles transmitted by the diversion component to avoid the particles from clumping during the transmission process. The gathering component collects the particles dispersedly transmitted by the collecting component for subsequent detection. A controller for controlling the overall operation of the online particle size detector is set on the side of the base.

[0010] Preferably, the feeding assembly includes an electrically controlled valve fixedly connected to the outside of one end of the arc-shaped outer shell, the electrically controlled valve having a main input end, a plurality of branch input ends connected to the main input end, and an output end, the main input end of the electrically controlled valve is fixedly connected to a feed pipe, the feed end of the laser scatterer is fixedly connected to an output pipe, a diverter is fixedly connected to the inner wall of one side of the arc-shaped outer shell close to the electrically controlled valve, the output end of the electrically controlled valve passes through the arc-shaped outer shell through a pipeline and is connected to the diverter, and a plurality of spray nozzles are fixedly connected to a rectangular array on one side of the diverter facing the inside of the arc-shaped outer shell.

[0011] Preferably, the air curtain assembly comprises an air curtain box fixedly connected to the inner arc surface of the arc-shaped shell, the side of the air curtain box away from the arc-shaped shell is evenly divided into an air curtain area, a guide area and an installation area from bottom to top, and the guide area corresponds to the spray nozzle, the air curtain box is evenly provided with a plurality of air curtain holes in a horizontal linear array in the air curtain area, the linear array of the guide area is fixedly connected with a plurality of guide oblique plates with an inclined direction facing the particle transmission direction, and a plurality of air flow grooves are provided on the surface of each of the guide oblique plates;

[0012] The fixing plate is fixedly connected in the installation area on the opposite sides of the two air curtain boxes. The two air curtain boxes are fixedly connected with a connecting pipe, and the connecting pipe is connected with the air curtain area. The two connecting pipes pass through the arc-shaped outer shell and are respectively connected with the hair dryer and the exhaust fan. The hair dryer and the exhaust fan are respectively arranged on both sides of the base.

[0013] Preferably, the diversion assembly includes a protective box fixedly connected to the upper end surface of the fixed plate, a collecting pipe is provided at the inner bottom of the protective box, two groups of collecting rings are fixedly connected in a linear array on the outer peripheral surface of the collecting pipe, and two collecting boxes are symmetrically provided on the inner top of the protective box, and each group of collecting rings is connected to the collection box at the corresponding position through a pipeline.

[0014] Preferably, the capture assembly includes an airflow box that passes through a fixed plate and is fixedly connected to the lower end surface of the protective box, and a linear array of semicircular grooves corresponding to the number of collecting rings are provided on a side of the airflow box away from the protective box, and a plurality of airflow holes are evenly provided on the inner circumferential wall of the semicircular groove, and each airflow hole passes through the airflow box through a pipe and is connected to a collecting pipe, and an airflow fan is rotatably connected to the inner top surface of the semicircular groove.

[0015] Preferably, the collecting assembly includes a first spherical shell fixedly connected to the upper end surface of the protective box and corresponding to the position of the collecting box, the first spherical shell penetrates the protective box through a pipe and is connected to the collecting box, the inner top of the first spherical shell is fixedly connected to a reflective cover, the inner spherical annular array of the first spherical shell is fixedly connected to a plurality of fixed seats, each of the fixed seats is rotatably connected to an end away from the first spherical shell, a plurality of elastic conical blocks are fixedly connected to both sides of the rotating block in a rectangular array, and a connecting ball is rotatably connected to one side of each rotating block away from the fixed seat.

[0016] Preferably, the collecting component includes a second spherical shell fixedly connected to the upper end surface of the protective box, the upper and lower inner walls of the second spherical shell are fixedly connected with a stabilizing disk, the opposite surfaces of the two stabilizing disks are fixedly connected with a rotating connecting frame, the rotating connecting frame has an input end and three output ends, the input end of the rotating connecting frame is connected with the stabilizing disk through a pipeline, the output ends corresponding to the positions of the two rotating connecting frames are rotatably connected with a rotating cylinder, and the outer circumferential surface of each rotating cylinder is evenly provided with a plurality of collecting holes, the upper end surface of the second spherical shell is provided with a three-way pipe, and the three-way pipe has an input end and two output ends, the input end of the three-way pipe is connected with the stabilizing disk through a pipeline passing through the second spherical shell, and the two output ends of the three-way pipe are connected with the collecting pipe through a pipeline.

[0017] Preferably, it also includes a recovery component, which includes a recovery box fixedly connected to the bottom of the base, a plurality of square holes are opened in a linear array on the upper end of the recovery box, and a side of the recovery box is fixedly connected with recovery pipes corresponding to the number of sub-input ends of the electric control valve, and one end of the recovery pipe away from the recovery box is connected to the corresponding sub-input end of the electric control valve.

[0018] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0019] 1. The online particle size detector can realize the dispersed transmission of particles and the screening of particles of different specifications through the feeding component and the air curtain component in the screening arrangement mechanism, so as to ensure that the specifications of particles entering the detector remain basically consistent. Among them, the feeding component can divide the transmitted particles into multiple parts and spray them into the air curtain component from different positions, so that they circulate evenly in the air curtain component, which helps to ensure that the amount of particles entering the detector is basically consistent, thereby improving the accuracy of detection. The air curtain component forms air curtains of different intensities through airflows of different intensities to intercept particles of corresponding specifications, and particles of specifications exceeding the current airflow intensity will pass through the air curtain formed by the air curtain component, thereby screening particles of different specifications. The air curtain component intercepts particles of different specifications by adjusting the airflow intensity. This graded screening ensures the accurate separation of particles of each specification. By precisely controlling the airflow and particle size distribution, the detection error caused by particle mixing and agglomeration effect is reduced, making the detection result more reliable.

[0020] 2. The particle size online detector can capture and disperse the screened particles through the diversion component, capture component, collection component and collection component in the screening arrangement mechanism, so as to avoid the screened particles from agglomerating again due to collision, friction or extrusion during the transmission process, so as to achieve the particles in the transmission process to maintain the dispersed state of the particles before the transmission. Among them, the capture component captures the particles by generating a spiral airflow, and the spiral airflow generated by the capture component helps to uniformly capture and disperse the particles, so that the particles of each part remain consistent during the transmission process, ensuring the accuracy of the detection results;

[0021] The particles captured by the capture component will be immediately transmitted to the diversion component, and the diversion component can divide the particles transmitted by the capture component into multiple parts and transmit them to the collection component. The collection component can collect the particles divided into multiple parts again, and remove the static electricity generated between the particles during the collection process, and adjust the distance between the particles. Finally, the final step of aggregation is performed through the aggregation component. Through the diversion component, capture component, etc., the particles can be effectively prevented from agglomerating again due to collision or friction during the transmission process, thereby maintaining the stability of the particles.

[0022] 3. The particle size online detector can capture the particles passing through the air curtain assembly through the conveyor belt assembly and the heating tube in the recycling and processing mechanism, and dry the captured particles, which can effectively remove the moisture in the particles, thereby avoiding the influence of the moisture in the particles on the screening results of the air curtain assembly on the particles, ensuring that the air curtain assembly can screen the particles more accurately and improve the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the overall side of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the overall lower end surface of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the material feeding assembly of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure inside the screening and arranging mechanism of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the air curtain assembly of the present invention;

[0030] Figure 7 It is a schematic diagram of the overall structure of the collecting component of the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the capture component of the present invention;

[0032] Fig. 9 It is a schematic diagram of the structure inside the flow diversion component of the present invention;

[0033] Fig.10 It is a schematic diagram of the structure inside the collecting component of the present invention;

[0034] Fig.11 It is a schematic diagram of the structure inside the collection component of the present invention;

[0035] Fig.12 It is a structural schematic diagram of the recycling component of the present invention;

[0036] Fig.13 It is a structural schematic diagram of the recycling and processing mechanism of the present invention;

[0037] Fig.14 It is a structural schematic diagram of the conveyor belt assembly of the present invention;

[0038] Fig.15 It is a structural schematic diagram of the connecting plate of the present invention;

[0039] Fig.16 For the present invention Fig.15 Enlarged view of point A in the middle.

[0040] Figure numerals: 1, base; 2, screening arrangement mechanism; 21, arc-shaped shell; 22, feeding assembly; 221, electric control valve; 222, diverter; 223, spray nozzle; 224, feeding pipe; 23, air curtain assembly; 231, air curtain box; 232, guide bevel; 233, air curtain hole; 234, connecting pipe; 24, diverter assembly; 241, protection box; 242, collecting pipe; 243, collecting ring; 244, collecting box; 25, capturing assembly; 251, air flow box; 252, semicircular groove; 253, air flow hole; 254, air flow fan; 26, collecting assembly; 261, first spherical shell; 262, reflector; 263, rotary Rotating block; 264, elastic cone block; 265, connecting ball; 27, collecting component; 271, second spherical shell; 272, stabilizing disk; 273, rotating connecting frame; 274, rotating cylinder; 275, collecting hole; 28, three-way pipe; 29, fixing plate; 210, recycling component; 2101, recycling box; 2102, square hole; 2103, recycling pipe; 2110, collecting pipe; 3, recycling and processing mechanism; 31, protective shell; 32, conveyor belt component; 321, rectangular groove; 33, connecting plate; 34, heating pipe; 35, concave cam; 4, fan; 5, exhaust fan; 6, vacuum cleaner; 7, laser scatterer; 71, output pipe. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The present invention will be further described below in conjunction with the embodiments.

[0043] Example: Refer to Figures 1 to 16 , an online particle size detector, comprising:

[0044] Base 1;

[0045] The screening and arranging mechanism 2 comprises an arc-shaped shell 21 fixedly connected to the upper end surface of the base 1, a feeding assembly 22 for spraying particles to be detected into the arc-shaped shell 21 is arranged at one end of the arc-shaped shell 21, a vacuum cleaner 6 and a laser scatterer 7 are arranged in sequence at the other end of the arc-shaped shell 21, and air curtain assemblies 23 for screening particles of different specifications are symmetrically arranged on the inner arc surface of the arc-shaped shell 21 at both sides of the feeding assembly 22, and the upper end surfaces of the two air curtain assemblies 23 opposite to each other are provided with a fixed plate 29, and the upper end surface of the fixed plate 29 is provided with a plurality of shunt assemblies 24 for dispersing and transmitting captured particles in a linear array, and the lower end surface of each shunt assembly 24 is provided with a capturing assembly 25 for capturing particles of different specifications, and the upper end surface of the shunt assembly 24 is provided with two collecting assemblies 26 and a collecting assembly 27, and the collecting assembly 27 is located between the two collecting assemblies 26, and the inner top of the arc-shaped shell 21 is fixedly connected with a collecting pipe 2110 connected with the collecting assembly 27;

[0046] Among them, the collecting component 26 can further disperse the particles transmitted by the diversion component 24 to avoid the particles from clumping during the transmission process. The collecting component 27 collects the particles dispersedly transmitted by the collecting component 26 for subsequent detection. A controller for controlling the overall operation of the online particle size detector is set on the side of the base 1.

[0047] The feeding assembly 22 in the screening and arranging mechanism 2 is used to divide the particles into multiple parts and spray them into the air curtain assembly 23 inside the arc-shaped shell 21 from different positions, so that the particles are evenly distributed in the air curtain assembly 23 inside the arc-shaped shell 21. The air curtain assembly 23 can screen particles of different specifications by adjusting the intensity of the airflow in the air curtain assembly 23. The capturing assembly 25 can capture the particles retained by the air curtain assembly 23 and transmit them through the diverter assembly 24, the collecting assembly 26 and the collecting assembly 27. The diverter assembly 24, the collecting assembly 26 and the collecting assembly 27 can maintain the state of the particles before the transmission during the transmission process, thereby avoiding errors in the detection results caused by the factors of particle transmission.

[0048] Reference Figure 3 to Figure 4 The feeding assembly 22 includes an electrically controlled valve 221 fixedly connected to the outside of one end of the arc-shaped shell 21. The electrically controlled valve 221 has a total input end, multiple sub-input ends connected to the total input end, and an output end. The total input end of the electrically controlled valve 221 is fixedly connected to a feed pipe 224, and the feed end of the laser scatterer 7 is fixedly connected to an output pipe 71. A diverter 222 is fixedly connected to the inner wall of one side of the arc-shaped shell 21 close to the electrically controlled valve 221. The output end of the electrically controlled valve 221 passes through the arc-shaped shell 21 through a pipeline and is connected to the diverter 222. A rectangular array on one side of the diverter 222 facing the inside of the arc-shaped shell 21 is fixedly connected to multiple spray nozzles 223.

[0049] The electrically controlled valve 221 in the feeding assembly 22 can be used to transfer particles from different transmission sources to the diverter 222. The particles transferred to the diverter 222 can be evenly divided into multiple parts in the diverter 222 and discharged from the corresponding spray nozzles 223, so that the particles can fill various positions of the air curtain assembly 23.

[0050] Reference Figures 5 and 6 The air curtain assembly 23 includes an air curtain box 231 fixedly connected to the inner arc surface of the arc-shaped shell 21. The side of the air curtain box 231 away from the arc-shaped shell 21 is evenly divided into an air curtain area, a guide area and an installation area from bottom to top, and the guide area corresponds to the spray nozzle 223. The air curtain box 231 is evenly provided with a plurality of air curtain holes 233 in a horizontal linear array in the air curtain area. The linear array of the guide area is fixedly connected with a plurality of guide oblique plates 232 facing the particle transmission direction in an inclined direction, and a plurality of air flow grooves are provided on the surface of each guide oblique plate 232.

[0051] The fixing plate 29 is fixedly connected in the installation area on the opposite sides of the two air curtain boxes 231. The two air curtain boxes 231 are fixedly connected with a connecting pipe 234, and the connecting pipe 234 is connected with the air curtain area. The two connecting pipes 234 pass through the arc-shaped outer shell 21 and are respectively connected with the hair dryer 4 and the exhaust fan 5. The hair dryer 4 and the exhaust fan 5 are respectively arranged on both sides of the base 1.

[0052] The air curtain holes 233 in the air curtain assembly 23 can be connected to the hair dryer 4 and the exhaust fan 5 respectively, so that the air curtain holes 233 in one air curtain assembly 23 discharge airflow, while the air curtain holes 233 in the other air curtain assembly 23 absorb the discharged airflow, thereby forming an air curtain layer between the two air curtain assemblies 23, and by adjusting the power of the hair dryer 4 and the exhaust fan 5, the intensity of the airflow is controlled, thereby achieving the screening of particles of different specifications.

[0053] Reference Figure 7 , Fig. 9 The diversion component 24 includes a protection box 241 fixedly connected to the upper end surface of the fixed plate 29, a collecting pipe 242 is arranged at the inner bottom of the protection box 241, and two groups of collecting rings 243 are fixedly connected in a linear array on the outer peripheral surface of the collecting pipe 242, and two collecting boxes 244 are symmetrically arranged on the inner top of the protection box 241, and each group of collecting rings 243 is connected to the collecting box 244 at the corresponding position through a pipeline.

[0054] The collecting pipe 242 in the diversion component 24 can be used to disperse the particles captured by the capturing component 25 and transfer them to the collecting ring 243, thereby achieving dispersed transmission of the particles and avoiding the particles from clumping together due to mutual squeezing when being transmitted in the collecting pipe 242.

[0055] Reference Figures 7 and 8The capture assembly 25 includes an airflow box 251 that penetrates the fixed plate 29 and is fixedly connected to the lower end surface of the protective box 241. A linear array of semicircular grooves 252 corresponding to the number of collecting rings 243 are provided on the side of the airflow box 251 away from the protective box 241. A plurality of airflow holes 253 are evenly provided on the inner peripheral wall of the semicircular groove 252, and each airflow hole 253 penetrates the airflow box 251 through a pipeline and is connected to the collecting pipe 242. The inner top surface of the semicircular groove 252 is rotatably connected to an airflow fan 254.

[0056] The air flow holes 253 of the semicircular groove 252 in the capture component 25 can be used to capture the particles remaining in the air curtain component 23, and the air flow fan 254 in the semicircular groove 252 can convert the suction force generated when the air flow holes 253 capture particles into a rotating airflow, thereby enhancing the capture of particles by the air flow holes 253.

[0057] Reference Figure 7 , Figures 9 and 10 The collecting assembly 26 includes a first spherical shell 261 fixedly connected to the upper end surface of the protective box 241 and corresponding to the position of the collecting box 244. The first spherical shell 261 penetrates the protective box 241 through a pipeline and is connected to the collecting box 244. A reflective cover 262 is fixedly connected to the inner top of the first spherical shell 261. A plurality of fixed seats are fixedly connected to the inner spherical annular array of the first spherical shell 261. A rotating block 263 is rotatably connected to one end of each fixed seat away from the first spherical shell 261. A plurality of elastic cone blocks 264 are fixedly connected to both sides of the rotating block 263 in a rectangular array. A connecting ball 265 is rotatably connected to one side of each rotating block 263 away from the fixed seat.

[0058] By utilizing the rotating block 263 and the elastic cone block 264 in the first spherical shell 261 of the collecting component 26, static electricity generated by the particles during transmission can be eliminated, and the spacing between the particles during transmission can also be adjusted, thereby preventing the particles from clumping during transmission.

[0059] Reference Fig. 9 , Fig.11The collecting component 27 includes a second spherical shell 271 fixedly connected to the upper end surface of the protective box 241, and the upper and lower inner walls of the second spherical shell 271 are fixedly connected with a stabilizing disk 272, and the opposite surfaces of the two stabilizing disks 272 are fixedly connected with a rotating connecting frame 273, and the rotating connecting frame 273 has an input end and three output ends. The input end of the rotating connecting frame 273 is connected with the stabilizing disk 272 through a pipeline, and the output ends corresponding to the positions of the two rotating connecting frames 273 are rotatably connected with a rotating cylinder 274, and the outer peripheral surface of each rotating cylinder 274 is evenly provided with a plurality of collecting holes 275. A three-way pipe 28 is provided on the upper end surface of the second spherical shell 271, and the three-way pipe 28 has an input end and two output ends. The input end of the three-way pipe 28 is connected with the stabilizing disk 272 through a pipeline penetrating the second spherical shell 271, and the two output ends of the three-way pipe 28 are connected with the collecting pipe 2110 through a pipeline.

[0060] By utilizing the rotating connecting frame 273 and the rotating cylinder 274 in the second spherical shell 271 of the collecting component 27, the transmitted particles can be absorbed at multiple positions, thereby avoiding squeezing and friction of the particles during the collection process, thereby preventing the particles from agglomerating.

[0061] Reference Figure 3 , Fig.12 , also includes a recovery component 210, the recovery component 210 includes a recovery box 2101 fixedly connected to the bottom of the base 1, a plurality of square holes 2102 are provided in a linear array at the upper end of the recovery box 2101, and a recovery pipe 2103 corresponding to the number of sub-input ends of the electric control valve 221 is fixedly connected to the side of the recovery box 2101, and one end of the recovery pipe 2103 away from the recovery box 2101 is connected to the corresponding sub-input end of the electric control valve 221.

[0062] By utilizing the square hole 2102 and the recovery pipe 2103 in the recovery component 210, the particles screened by the air curtain component 23 can be retransmitted to the feeding component 22, thereby achieving rescreening of the particles by the air curtain component 23 with enhanced airflow.

[0063] Reference Figures 13 to 16 , also includes a recycling and processing mechanism 3, the recycling and processing mechanism 3 includes a protective shell 31 fixedly connected to the lower end surface of the arc-shaped shell 21, a conveyor belt assembly 32 is arranged in the inner middle part of the protective shell 31, the conveyor belt assembly 32 has a conveyor belt, a roller and a driver, a plurality of rectangular grooves 321 are opened in a linear array on the conveyor belt surface of the conveyor belt assembly 32, the recycling box 2101 passes through the protective shell 31 and corresponds to the position of the roller, a connecting plate 33 is fixedly connected to the inner middle part of the protective shell 31, and the connecting plate 33 is located in the middle of the conveyor belt assembly 32, a curved heating tube 34 is fixedly connected to the central position of the upper end surface of the connecting plate 33, two sets of concave cams 35 are fixedly connected to the upper end of the connecting plate 33 and symmetrically about the curved heating tube 34, and the concave cams 35 are in contact with the conveyor belt of the conveyor belt assembly 32.

[0064] By using the conveyor belt assembly 32 and the curved heating tube 34 in the recycling and processing mechanism 3, the particles screened by the air curtain assembly 23 can be captured and transported, and the particles can be dried during the transportation process to remove the influence of moisture in the particles on the screening results of the air curtain assembly 23.

[0065] The operating principle of this embodiment is as follows:

[0066] Step 1: Start the device (the device in this specification refers to the online particle size detector) through the controller (the controller is a prior art and is not shown in the figure). When the device is started, the hair dryer 4, the exhaust fan 5, the vacuum cleaner 6 and the laser scatterer 7 in the device are also started. The power of the hair dryer 4 and the exhaust fan 5 when starting is adjusted by the staff in the controller according to the different types of particles, so as to achieve the purpose of normal operation of the subsequent air curtain assembly 23;

[0067] As the startup of the equipment is completed, the feed pipe 224 in the feeding component 22, which is connected to the previous process of the equipment, begins to transfer the particles in the previous process of the equipment to the diverter 222 through the electric control valve 221 (the output end of the electric control valve 221 simultaneously realizes the connection between the total input end and one of the sub-input ends, and when the equipment is just started, the output end of the electric control valve 221 is in a connected state with the total input end), and the diverter 222 can evenly distribute the particles entering therein, so that the particles entering the diverter 222 can be evenly discharged from the spray nozzle 223. The reason why the diverter 222 can evenly distribute the particles entering therein is that the internal structure of the diverter 222 is designed to be a specific geometric shape, such as a cone, spiral or grid structure, etc. These designs can create a specific flow path and flow velocity distribution, thereby prompting the particles to be distributed to the specified flow path and flow velocity, thereby achieving the purpose of evenly distributing the particles entering the diverter 222, so that the amount of particles discharged from multiple spray nozzles 223 is the same.

[0068] Among them, while the feeding component 22 inputs particles into the equipment, the air curtain boxes 231 in the two air curtain components 23 symmetrically arranged in the arc-shaped shell 21 are respectively connected to the hair dryer 4 and the exhaust fan 5, so that the air curtain holes 233 of the two air curtain boxes 231 will respectively have blowing and suction phenomena, thereby forming an air curtain layer (the reason for the formation of the air curtain layer: the hair dryer 4 blows air into one of the air curtain boxes 231 to create a positive airflow; the exhaust fan draws air from the other air curtain box 231 to form a negative airflow, and the two airflows are symmetrically arranged to form a stable airflow layer), and the power (wind speed intensity) of the hair dryer 4 and the exhaust fan 5 when the air curtain box 231 forms an air curtain layer will affect the screening results of the air curtain layer for particles of different specifications. Therefore, when starting the hair dryer 4 and the exhaust fan 5, it is necessary to set the corresponding power of the hair dryer 4 and the exhaust fan 5 according to the specifications of the particles.

[0069] For example: particle specifications are roughly divided into coarse particles (particle size greater than 1 mm), medium particles (particle size between 0.1 and 1 mm) and fine particles (particle size between 1 micron and 0.1 mm), and the corresponding wind speed intensities generated by the hair dryer 4 and the exhaust fan 5 are respectively: fine particles: wind speed is about 0.5-1m / s. Small particles have small inertia and are easier to be controlled by wind flow, so the required wind speed is relatively low. At this time, the air curtain layer cannot intercept coarse particles and medium particles; medium particles: wind speed is about 1-2m / s. The inertia and weight of medium particles are between large particles and small particles. Therefore, medium wind speed can effectively control these particles. At this time, the air curtain layer cannot intercept coarse particles; coarse particles: wind speed is about 1.5-3m / s. Because the inertia of coarse particles is large and heavy, strong wind flow is required to effectively block these particles, so that the air curtain layer can complete the interception of the last coarse particles; Note: The above is an example. The specific power of the hair dryer 4 and the exhaust fan 5 is based on the actual situation of the particles.

[0070] By setting air curtain layers of different intensities, the particles entering the laser scatterer 7 for detection can be preliminarily screened, so that particles of the same specifications (the same specifications here refer to particles within a certain range: such as coarse particles, which refer to particles with a diameter greater than 1 mm) can be detected by the laser scatterer 7 at the same time. By preliminarily screening and classifying the particles, the probability of agglomeration problems caused by friction and static electricity generated by larger particles can be greatly reduced, thereby maintaining the fluidity and consistency of the particles. At the same time, through preliminary screening, the problem of decreased transportation efficiency due to differences in physical properties when subsequent particles are transmitted to the laser scatterer 7 can be optimized.

[0071] The reasons why the air curtain layer can screen particles of different specifications:

[0072] When the particles are relatively light and do not pass through the air curtain:

[0073] State: The mass of the particles is relatively small. On the radial section of the arc-shaped housing 21, the direction of the resultant force of the particles due to gravity and the thrust of the airflow in the air curtain layer is inclined toward the air curtain assembly 23. The angle formed between the direction of the resultant force and the horizontal line is small. The particles move toward the vacuum cleaner 6 and the recycling and processing mechanism 3 at the same time. However, due to the small angle, the particles are captured by the suction generated by the vacuum cleaner 6 before passing through the airflow layer.

[0074] When the particles are relatively heavy and pass through the air curtain:

[0075] State: The mass of the particles is relatively large. On the radial section of the arc-shaped housing 21, the direction of the resultant force of the gravity and the thrust of the airflow in the air curtain layer is inclined toward the air curtain assembly 23. The direction of the resultant force forms a large angle with the horizontal line. The particles move toward the vacuum cleaner 6 and the recycling mechanism 3 at the same time. However, due to the large angle, the particles pass through the airflow layer before being captured by the vacuum cleaner 6, and are then captured by the conveyor belt assembly 32 in the recycling mechanism 3.

[0076] At the same time, in order to allow the particles to flow smoothly in the guide area (the spray nozzle 223 corresponds to the guide area of ​​the air curtain box 231, so the particles discharged from the spray nozzle 223 are mainly in the guide area), a guide bevel 232 for guiding the flow of particles is provided in the guide area, thereby guiding the particles flowing in the guide area in the air curtain box 231, and then allowing the particles flowing in the guide area to enter the air curtain box 231 in an orderly manner for screening of particles of different specifications. At the same time, the particles after screening can also enter the laser scattering instrument 7 in an orderly manner for detection.

[0077] Among them, the airflow box 251 can capture the particles flowing in the guide area, and the airflow box 251 absorbs the particles through the suction force of the airflow hole 253 (the suction force of the airflow hole 253 comes from the vacuum cleaner 6). At the same time, an airflow fan 254 is arranged in the semicircular groove 252, so as to convert the suction force of the airflow hole 253 into spiral suction, and absorb the particles through the spiral suction, thereby greatly avoiding the static electricity generated by the particles due to mutual friction during the absorption process, thereby causing the clumping phenomenon (the spiral suction can avoid the clumping phenomenon because: the spiral suction can suspend the particles in the air or airflow, reduce the direct contact between the particles, and thus reduce the probability of clumping). By reducing the occurrence of clumping, the accuracy of particle detection by the laser scattering instrument 7 is improved.

[0078] Among them, the capture component 25 will transfer the captured particles to the collecting pipe 242 in the diversion component 24, and the collecting pipe 242 can transfer the particles to the collecting ring 243 located at its clustering position, thereby realizing the dispersed transmission of the particles and avoiding the particles from clustering due to mutual squeezing during the transmission process in the collecting pipe 242. The collecting ring 243 will further transfer the particles to the collecting box 244 for transitional storage to prevent discontinuity when the particles are transmitted to the collecting component 26, thereby ensuring the continuity of the particle flow. This can reduce the flow fluctuation caused by particle loss during the particle flow transmission process, thereby improving the consistency of the laser scattering instrument measurement results.

[0079] Among them, the particles stored in the collection box 244 will be further transmitted to the first spherical shell 261 in the collection component 26. The particles entering the first spherical shell 261 will be under the rotation of the rotating block 263 (the rotation of the rotating block 263 is mainly affected by the suction force of the vacuum cleaner 6), so that the elastic cone block 264 will contact with the particles, thereby greatly removing the static electricity generated between the particles (the main component material of the elastic cone block 264 is conductive rubber), and it is highly likely to avoid the static electricity generated by friction, collision or air flow during the transmission process, causing the clumping phenomenon. At the same time, the contact between the elastic cone block 264 and the particles can also adjust the distance between the particles, further avoiding the generation of static electricity.

[0080] Among them, after the collecting component 26 completes the processing of the particles, it will be further transmitted to the second spherical shell 271 of the collecting component 27, and the particles entering the second spherical shell 271 will be absorbed by the collecting holes 275 in the rotating multiple rotating cylinders 274 (the rotation of the rotating cylinder 274 is because the suction force of the vacuum cleaner 6 is discharged from the collecting holes 275, and the collecting holes 275 are in an oblique state, so the rotating cylinder 274 rotates). The rotational motion absorbs the particles and can reduce the aggregation and agglomeration of the particles, maintain the fluidity and stability of the particles, and at the same time can process a larger number of particles because they improve the processing efficiency through continuous movement.

[0081] Among them, all the particles absorbed by the collection component 26 will be transmitted to the collection tube 2110, and the collection tube 2110 is connected to the vacuum cleaner 6, so the vacuum cleaner 6 will absorb the particles in the collection tube 2110 into the laser scattering instrument 7 for detection, and the laser scattering instrument 7 will complete the detection of the particles and discharge them from the output pipe 71.

[0082] Step 2: The particles screened out by the air curtain in the air curtain assembly 23 will enter the recycling and processing mechanism 3 for recycling. When the particles enter the recycling and processing mechanism 3, they will first be captured by the rectangular groove 321 in the conveyor belt assembly 32, and the particles located in the rectangular groove 321 will be heated by the heating tube 34, so as to remove the moisture in the particles, so as to avoid the weight of the particles being affected by the presence of moisture, thereby affecting the screening result of the particles by the air curtain assembly 23. At the same time, when the particles are transmitted in the rectangular groove 321, the concave cam 35 will cause resistance to the conveyor belt assembly 32, so that the conveyor belt assembly 32 will vibrate, and with the occurrence of vibration, the particles can be prevented from sticking together during the drying process (because the vibration can make the particles move and roll continuously on the conveyor belt, which can prevent the particles from gathering together due to static electricity or adhesion during the drying process, and the contact opportunities between the particles are reduced through vibration, thereby reducing the possibility of adhesion).

[0083] Among them, the processed particles are re-transmitted to the feeding component 22 through the recovery component 210, and the particles will first be captured from the rectangular groove 321 by the recovery box 2101 in the recovery component 210 (the recovery box 2101 contains a vacuum cleaner), and the recovery box 2101 will re-transmit the captured particles to the feeding component 22 through multiple recovery pipes 2103, and then be re-sprayed into the air curtain component 23 through the feeding component 22 for screening, completing the classification and processing of particles of different specifications, thereby avoiding the situation that smaller particles will flow more easily and larger particles will generate static electricity during the flow process, which will adsorb smaller particles to form agglomerates and affect the detection results of the laser scattering instrument 7.

[0084] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An online particle size detector, characterized in that: include: Base (1); The screening and arranging mechanism (2) comprises an arc-shaped shell (21) fixedly connected to the upper end surface of the base (1), one end of the arc-shaped shell (21) is provided with a feeding assembly (22) for spraying particles to be detected into the arc-shaped shell (21), the other end of the arc-shaped shell (21) is provided with a vacuum cleaner (6) and a laser scattering instrument (7) in sequence, the arc-shaped shell (21) is symmetrically provided with air curtain assemblies (23) for screening particles of different specifications on the inner arc surface at both sides of the feeding assembly (22), and the upper end surfaces of the two opposite surfaces of the air curtain assemblies (23) are A fixing plate (29) is provided, and a plurality of flow diversion components (24) for dispersing and transmitting captured particles are provided in a linear array on the upper end surface of the fixing plate (29); a capture component (25) for capturing particles of different specifications is provided on the lower end surface of each flow diversion component (24); two collection components (26) and a collection component (27) are provided on the upper end surface of the flow diversion component (24), and the collection component (27) is located between the two collection components (26); and a collection pipe (2110) in communication with the collection component (27) is fixedly connected to the inner top of the arc-shaped housing (21); The flow distribution component (24) comprises a protection box (241) fixedly connected to the upper end surface of the fixed plate (29); a collecting pipe (242) is arranged at the inner bottom of the protection box (241); two groups of collecting rings (243) are fixedly connected in a linear array on the outer peripheral surface of the collecting pipe (242); two collecting boxes (244) are symmetrically arranged at the inner top of the protection box (241); each group of collecting rings (243) is connected to a collecting box (244) at a corresponding position through a pipeline; The collecting assembly (26) comprises a first spherical shell (261) fixedly connected to the upper end surface of the protection box (241) and corresponding to the position of the collecting box (244); the first spherical shell (261) penetrates the protection box (241) through a pipeline and is connected to the collecting box (244); a reflector (262) is fixedly connected to the inner top of the first spherical shell (261); a plurality of fixing seats are fixedly connected to the inner spherical annular array of the first spherical shell (261); a rotating block (263) is rotatably connected to one end of each fixing seat away from the first spherical shell (261); a plurality of elastic cone blocks (264) are fixedly connected to both sides of the rotating block (263) in a rectangular array; and a connecting ball (265) is rotatably connected to one side of each rotating block (263) away from the fixing seat; The collecting assembly (27) comprises a second spherical shell (271) fixedly connected to the upper end surface of the protection box (241); the upper and lower inner walls of the second spherical shell (271) are fixedly connected to a stabilizing disk (272); the opposite surfaces of the two stabilizing disks (272) are fixedly connected to a rotating connecting frame (273); the rotating connecting frame (273) has an input end and three output ends; the input end of the rotating connecting frame (273) is connected to the stabilizing disk (272) via a pipeline; the two rotating connecting frames (273) are connected to the stabilizing disk (272) via a pipeline; ) is rotatably connected to an output end corresponding to a position of the rotating cylinder (274), a plurality of collecting holes (275) are evenly provided on the outer circumference of each rotating cylinder (274), a three-way pipe (28) is provided on the upper end surface of the second spherical shell (271), and the three-way pipe (28) has an input end and two output ends, the input end of the three-way pipe (28) penetrates the second spherical shell (271) through a pipeline and is connected to the stabilizing disk (272), and the two output ends of the three-way pipe (28) are connected to the collecting pipe (2110) through a pipeline; The collecting component (26) further disperses and transmits the particles transmitted by the diversion component (24) to avoid the particles from clumping during the transmission process, and the collecting component (27) collects the particles dispersed and transmitted by the collecting component (26) for subsequent detection. A controller for controlling the overall operation of the online particle size detector is provided on the side of the base (1).

2. The on-line particle size detector according to claim 1, characterized in that: The material delivery assembly (22) comprises an electrically controlled valve (221) fixedly connected to the outside of one end of the arc-shaped housing (21); the electrically controlled valve (221) comprises a main input end, a plurality of sub-input ends connected to the main input end, and an output end; the main input end of the electrically controlled valve (221) is fixedly connected to a feed pipe (224); the feed end of the laser scattering instrument (7) is fixedly connected to an output pipe (71); a flow divider (222) is fixedly connected to an inner wall of a side of the arc-shaped housing (21) close to the electrically controlled valve (221); the output end of the electrically controlled valve (221) penetrates the arc-shaped housing (21) through a pipeline and is connected to the flow divider (222); a plurality of spray nozzles (223) are fixedly connected to a rectangular array on a side of the flow divider (222) facing the inside of the arc-shaped housing (21).

3. The on-line particle size detector according to claim 2, characterized in that: The air curtain assembly (23) comprises an air curtain box (231) fixedly connected to the inner arc surface of the arc-shaped outer shell (21); the side of the air curtain box (231) away from the arc-shaped outer shell (21) is evenly divided into an air curtain area, a guide area and an installation area from bottom to top, and the guide area corresponds to the spray nozzle (223); the air curtain box (231) is evenly provided with a plurality of air curtain holes (233) in a horizontal linear array in the air curtain area; the linear array of the guide area is fixedly connected with a plurality of guide oblique plates (232) inclined in a direction facing the particle transmission direction, and a plurality of air flow grooves are provided on the surface of each of the guide oblique plates (232); The fixing plate (29) is fixedly connected to the installation area on the opposite sides of the two air curtain boxes (231); the two air curtain boxes (231) are fixedly connected with a connecting pipe (234), and the connecting pipe (234) is connected to the air curtain area; the two connecting pipes (234) pass through the arc-shaped outer shell (21) and are respectively connected to the hair dryer (4) and the exhaust fan (5); the hair dryer (4) and the exhaust fan (5) are respectively arranged on both sides of the base (1).

4. The on-line particle size detector according to claim 1, characterized in that: The capture assembly (25) comprises an airflow box (251) that penetrates the fixed plate (29) and is fixedly connected to the lower end surface of the protection box (241); a linear array of semicircular grooves (252) corresponding to the number of collecting rings (243) is provided on a side of the airflow box (251) away from the protection box (241); a plurality of airflow holes (253) are evenly provided on the inner peripheral wall of the semicircular groove (252); each airflow hole (253) penetrates the airflow box (251) through a pipeline and is connected to the collecting pipe (242); and an airflow fan (254) is rotatably connected to the inner top surface of the semicircular groove (252).

5. The on-line particle size detector according to claim 2, characterized in that: The invention also comprises a recovery component (210), wherein the recovery component (210) comprises a recovery box (2101) fixedly connected to the bottom of the base (1), a plurality of square holes (2102) being provided in a linear array at the upper end of the recovery box (2101), and recovery pipes (2103) corresponding in number to the sub-input ends of the electric control valve (221) being fixedly connected to the side of the recovery box (2101), and an end of the recovery pipe (2103) away from the recovery box (2101) being connected to the corresponding sub-input end of the electric control valve (221).

6. The on-line particle size detector according to claim 5, characterized in that: The invention also comprises a recycling and processing mechanism (3), wherein the recycling and processing mechanism (3) comprises a protective shell (31) fixedly connected to the lower end surface of the arc-shaped outer shell (21), a conveyor belt assembly (32) is arranged in the inner middle part of the protective shell (31), the conveyor belt assembly (32) comprises a conveyor belt, a roller and a driver, a plurality of rectangular grooves (321) are linearly arranged on the surface of the conveyor belt of the conveyor belt assembly (32), the recycling box (2101) passes through the protective shell (31) and corresponds to the position of the roller, a connecting plate (33) is fixedly connected to the inner middle part of the protective shell (31), and the connecting plate (33) is located in the middle part of the conveyor belt assembly (32), a curved heating tube (34) is fixedly connected to the central position of the upper end surface of the connecting plate (33), and two groups of concave cams (35) are fixedly connected to the upper end of the connecting plate (33) and symmetrically with respect to the curved heating tube (34), and the concave cams (35) are in contact with the conveyor belt of the conveyor belt assembly (32).

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