Ore particle size distribution and particle size diameter detection equipment

Abstract

The invention relates to the technical field of ore particle size detection, in particular to ore particle size distribution and particle size diameter detection equipment. Comprising a laser particle size analyzer body and a sample injector mounted at the upper end of the laser particle size analyzer body, a detection opening is formed in the upper end of the laser particle size analyzer body; a discharge opening is formed in the lower end of the sample injector; the discharge port is opposite to the detection port; the air cavity is arranged; the resistance wire in the air cavity can heat air flowing through the air cavity, when the heated air is blown to ore particles falling into the trough through the hopper, the heated hot air can bake the ore particles and evaporate moisture on the surfaces of the particles, and therefore bonding force among the particles caused by the moisture is reduced, and the service life of the ore particles is prolonged. The agglomerated particles can be separated into independent small particles more easily, so that the agglomeration phenomenon is reduced, the particle size distribution data is closer to the real condition of the ore, and the particle size measurement result is more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of ore particle size detection, in particular to an ore particle size distribution and particle diameter detection device. Background Art

[0002] Ore particle size distribution refers to the distribution of the content of particles of different sizes in the ore; the detection of ore particle size distribution and particle size diameter is usually completed with the help of specific screening equipment or other particle size analysis instruments; these equipment and instruments accurately separate and carefully count ore particles based on different sieve aperture specifications or unique measurement principles, thus clearly presenting the distribution of ore by particle size; Among them, the laser particle size analysis method has the advantages of being fast, accurate, and having a wide range of measurable particle sizes compared to the screening method. Specifically, a laser particle size analyzer is used to detect the particle size distribution and particle size diameter of the ore; and the laser particle size analyzer includes a light source system, an injector, and a data processing system. The injector includes two types: a dry injector and a wet injector. When detecting the particle size of the ore, most of them use dry measurement. The dry method is mostly used for the detection of the ore particle size; the principle is to use airflow to blow away the ore particles placed in the injector hopper and transport them to the laser beam irradiation area. When the laser beam passes through these scattered ore particles, the particles will scatter the laser, and the angle and intensity of the scattered light are closely related to the size of the particles; the scattered light signals at different angles are collected by the detector and converted into electrical signals or digital signals. The data processing system analyzes and calculates these signals according to a specific algorithm, and finally obtains the particle size distribution data and particle size diameter data of the ore particles; When the storage or transportation environment of the ore is in a high humidity, such as near the seaside, rivers and other areas with sufficient water vapor, the ore will absorb moisture from the surrounding environment, resulting in moisture on the surface of the ore particles; liquid bridges are formed between the ore particles, increasing the attraction between the particles. On the one hand, the ore particles are easy to gather together and form agglomeration; on the other hand, some ore particles will adhere to the inner wall of the hopper due to this attraction; The agglomeration of ore particles will cause originally independent small particles to aggregate together, and they will be misjudged as larger particles during the detection process. This will not only lead to an artificially high proportion of large particles in the particle size distribution data, but also a corresponding decrease in the proportion of small particles, which seriously deviates from the true particle size distribution of the ore. In addition, when the agglomerated particles are measured as single particles, the obtained particle size diameter is inevitably larger than the actual diameter of a single particle, resulting in the final particle size diameter measurement results being generally larger and unable to reflect the true size of the ore particles. Usually, the blowing effect of airflow on ore particles mostly occurs under the hopper, and its purpose is to blow the ore particles falling from the hopper. However, when the ore particles adhere to the inner wall of the hopper, some particles cannot fall normally for detection, which will cause deviations in the proportion of each particle size range in the particle size distribution data statistics process, and cannot accurately present the true particle size distribution characteristics of the ore; Moreover, if the ore particles adhere to the inner wall of the hopper for a long time, they will gradually accumulate and form agglomerates. These agglomerates will block the hopper outlet or the sampling pipeline, seriously affecting the normal operation of the entire detection equipment. In this regard, the operator has to frequently clean the inner wall of the hopper, which not only increases the labor intensity of the operator, but also prolongs the detection cycle and reduces the detection efficiency. In view of this, in order to overcome the above technical problems, the present invention proposes an ore particle size distribution and particle size diameter detection device to solve the above technical problems. Summary of the invention

[0003] In order to make up for the shortcomings of the prior art, the present invention proposes an ore particle size distribution and particle size diameter detection device. The present invention sets an air cavity; the resistance wire in the air cavity heats the air flowing through the air cavity, so that when the heated air is blown through the hopper to the ore particles falling into the trough through the hopper, the heated hot air bakes the ore particles and evaporates the moisture on the surface of the particles, thereby reducing the adhesion between the particles caused by moisture, making it easier to separate the agglomerated particles into independent small particles, thereby reducing the occurrence of agglomeration, making the particle size distribution data closer to the actual situation of the ore, and the particle size measurement result is more accurate.

[0004] The technical solution adopted by the present invention to solve the technical problem is that the ore particle size distribution and particle size diameter detection device described in the present invention comprises: A laser particle size analyzer body and a sample injector installed on the upper end thereof; a detection port is provided on the upper end of the laser particle size analyzer body; a discharge port is provided on the lower end of the sample injector; the discharge port is directly opposite to the detection port; The sampler also includes a body; a cover is installed on the upper end of the body; the discharge port is opened at the lower end of the body; a feed tray is installed on the upper end of the body; a hopper is installed on the upper end of the feed tray; a material trough is opened inside the feed tray; one end of the material trough is directly opposite to the discharge port; an air inlet is opened at one end of the material trough; the air inlet is connected to the laser particle size analyzer body through an air pipe; an air cavity is opened inside the body; the air cavity is located between the air inlet and the material trough; one end of the air cavity is connected to the air inlet, and the other end is connected to the material trough; a resistance wire is fixedly installed in the air cavity; A cleaning unit is installed at the lower end of the machine cover; the cleaning unit is used to clean the hopper.

[0005] Preferably, the cleaning unit includes a cleaning rod; the machine cover is rotatably connected to the machine body; a groove is provided at one end of the machine cover close to the machine body; a connecting rod is rotatably installed in the groove; a driving motor is fixedly installed on the upper end of the machine cover; the driving motor drives the connecting rod to rotate through a transmission belt; and the cleaning rod is slidably connected to the connecting rod.

[0006] Preferably, the air cavity is arranged in a spiral shape.

[0007] Preferably, the lower end of the hopper is rotatably connected to a baffle via a torsion spring; the number of the baffles is two; and electromagnetic blocks are embedded in the mutually adjacent sides of the two baffles.

[0008] Preferably, a sealing cover is fixedly connected to the upper end of the cleaning rod; the cleaning rod is slidably connected to the connecting rod through the sealing cover; the sealing cover is fixedly connected to the bottom of the groove through a connecting spring; an electromagnetic sheet is embedded at one end of the sealing cover close to the bottom of the groove.

[0009] Preferably, the surface of the connecting rod is sleeved with a spring hose connected to the air cavity; an air passage is opened inside the cleaning rod; the end of the spring hose away from the air cavity is connected to the air passage; the end of the air passage away from the spring hose passes through the lower end of the cleaning rod.

[0010] Preferably, a straight rod is arranged between the connecting rod and the bottom of the groove; the driving motor is connected to the straight rod through a transmission belt; a rectangular groove is opened at one end of the connecting rod close to the straight rod; the straight rod is slidably connected in the rectangular groove; the straight rod and the bottom of the rectangular groove are fixedly connected by a supporting spring.

[0011] Preferably, a pressure-stabilizing valve is fixedly installed inside the spring hose.

[0012] The beneficial effects of the present invention are as follows: The present invention sets an air cavity so that the resistance wire in the air cavity can heat the air flowing through the air cavity, so that when the heated air is blown through the hopper to the ore particles falling into the trough through the hopper, the heated hot air can bake the ore particles and evaporate the moisture on the surface of the particles, thereby reducing the adhesion between the particles caused by moisture, making it easier to separate the agglomerated particles into independent small particles, thereby reducing the occurrence of agglomeration, making the particle size distribution data closer to the actual situation of the ore, and making the particle size measurement result more accurate.

[0013] The present invention provides a cleaning rod so that a driving motor drives the cleaning rod to rotate in the hopper and generate direct physical contact with the ore particles adhered to the inner wall of the hopper, so that on the one hand, a certain friction and impact force are generated on the ore particles, thereby destroying the adhesion between the particles and the inner wall of the hopper, accelerating the adhered particles to detach from the inner wall and fall normally for detection, and on the other hand, the rotating cleaning rod can drive the overall flow of the ore particles in the hopper, thereby breaking the static state of the particles in the hopper and reducing the adhesion of the particles. At the same time, the flowing particles will also have a certain flushing effect on the adhered particles on the inner wall, further promoting their falling off; ensuring that the particles in the hopper can fall normally for detection, avoiding deviations in the proportion of each ore particle size range in the statistical process of ore particle size distribution data, so as to ensure that the actual particle size distribution characteristics of the current ore are more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0015] Figure 1 is a stereogram of the present invention; Figure 2 It is a schematic diagram of the separation of the laser particle size analyzer body and the sample injector in the present invention; Figure 3 is a bottom view of the sample injector used in the present invention; Figure 4 is a partial cross-sectional view of the sample injector used in the present invention; Figure 5 yes Figure 4 The enlarged view of point A in the middle; Figure 6 yes Figure 4 The enlarged view of point B in the middle; Figure 7 yes Figure 4 Enlarged view of point C in the middle; In the figure, 1. laser particle size analyzer body; 11. detection port; 2. sample injector; 21. discharge port; 22. machine body; 221. feed tray; 222. hopper; 223. material trough; 224. air inlet; 225. baffle; 226. electromagnetic block; 23. machine cover; 24. air cavity; 241. resistance wire; 242. spring hose; 243. pressure regulating valve; 25. cleaning rod; 251. air duct; 26. groove; 261. connecting rod; 262. driving motor; 263. straight rod; 264. rectangular groove; 265. support spring; 266. transmission belt; 27. sealing cover; 271. connecting spring; 272. electromagnetic sheet. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0017] like Figures 1 to 7 As shown, the ore particle size distribution and particle size diameter detection device of the present invention comprises a laser particle size analyzer body 1 and a sample injector 2 and a cleaning unit installed at the upper end thereof; a detection port 11 is provided at the upper end of the laser particle size analyzer body 1; a discharge port 21 is provided at the lower end of the sample injector 2; the discharge port 21 is directly opposite to the detection port 11; The sampler 2 also includes a body 22; a cover 23 is installed on the upper end of the body 22; the discharge port 21 is opened at the lower end of the body 22; a lower material tray 221 is installed on the upper end of the body 22; a hopper 222 is installed on the upper end of the lower material tray 221; a material trough 223 is opened inside the lower material tray 221; one end of the material trough 223 is directly opposite to the discharge port 21; an air inlet 224 is opened at one end of the material trough 223; the air inlet 224 is connected to the laser particle size analyzer body 1 through an air pipe; an air cavity 24 is opened inside the body 22; the air cavity 24 is located between the air inlet 224 and the material trough 223; one end of the air cavity 24 is connected to the air inlet 224, and the other end is connected to the material trough 223; a resistance wire 241 is fixedly installed in the air cavity 24; the cleaning unit is installed at the lower end of the cover 23; the cleaning unit is used to clean the hopper 222.

[0018] As an embodiment of the present invention, the cleaning unit includes a cleaning rod 25; the machine cover 23 is rotatably connected to the machine body 22; a groove 26 is provided at one end of the machine cover 23 close to the machine body 22; a connecting rod 261 is rotatably installed in the groove 26; a driving motor 262 is fixedly installed at the upper end of the machine cover 23; the driving motor 262 drives the connecting rod 261 to rotate through a transmission belt 266; the cleaning rod 25 is slidably connected to the connecting rod 261.

[0019] As an embodiment of the present invention, the air cavity 24 is configured to be spiral.

[0020] As an embodiment of the present invention, the lower end of the hopper 222 is rotatably connected to a baffle 225 via a torsion spring; there are two baffles 225; and an electromagnetic block 226 is embedded in one side of the two baffles 225 that are close to each other.

[0021] When ore particles agglomerate during operation, the originally independent small particles will gather together and be mistakenly judged as larger particles during the detection process. This will not only cause the proportion of large particles in the particle size distribution data to be artificially high, while the proportion of small particles will be correspondingly reduced, which seriously deviates from the actual particle size distribution of the ore, but also when the agglomerated particles are measured as single particles, the obtained particle size diameter will inevitably be larger than the actual diameter of the single particle, resulting in the final particle size diameter measurement result being generally larger and unable to reflect the true size of the ore particles.

[0022] To this end, the present invention sets an air cavity 24 so that the resistance wire 241 in the air cavity 24 can heat the air flowing through the air cavity 24, so that when the heated air is blown through the hopper 222 to the ore particles falling into the trough 223 through the hopper 222, the heated hot air can bake the ore particles and evaporate the moisture on the surface of the particles, thereby reducing the adhesion between the particles caused by moisture, making it easier to separate the agglomerated particles into independent small particles, thereby reducing the occurrence of agglomeration, making the particle size distribution data closer to the actual situation of the ore, and making the particle size measurement result more accurate.

[0023] In the initial state, the cleaning rod 25 is made of PTFE material, and the two baffles 225 seal the lower end of the hopper 222 under the action of the torsion spring restoring force. When in use, the user first opens the cover 23, and then pours the ore particles into the hopper 222. At this time, the ore particles in the hopper 222 are blocked by the baffles 225 and cannot fall into the trough 223, thereby preventing the ore particles poured into the hopper 222 from falling directly to the upper end of the trough 223, causing the ore particles to agglomerate directly in the trough 223. Then the user covers the cover 23, so that the cover 23 drives the cleaning rod 25 to be inserted into the hopper 222. Since the cleaning rod 25 is made of PTFE material, the cleaning rod 25 not only has a smooth surface that does not adhere to the ore particles, but also has a low friction coefficient on the surface of the smooth cleaning rod 25, thereby reducing the friction between the cleaning rod 25 and the ore particles, greatly reducing the wear of the cleaning rod 25 caused by the ore particles, and improving the service life of the cleaning rod 25. Since the cleaning rod 25 is made of PTFE material, the cleaning rod 25 will contact the inner wall of the hopper 222 during the descent process, so that the cleaning rod 25 will bend and deform under the obstruction of the inner wall of the hopper 222, so that the bent and deformed part of the cleaning rod 25 will slide along the inclined surface of the hopper 222, so that the bent and deformed part of the cleaning rod 25 can slide in contact with the inner wall of the hopper 222.

[0024] After the ore particles are poured into the hopper 222, the user first controls the air supply system in the laser particle size analyzer body 1 to deliver air to the air inlet 224, so that the air entering the air inlet 224 will be blown into the material trough 223 through the air cavity 24. At this time, the resistance wire 241 is in a heated state, so that the air blown into the material trough 223 through the air cavity 24 is heated by the resistance wire 241. By arranging a temperature sensor in the material trough 223, the temperature sensor can directly sense the temperature of the heated air. After the heated air reaches the required drying temperature, the user controls the electromagnetic blocks 226 on the two baffles 225 to be energized, so that the magnetic poles generated by the two electromagnetic blocks 226 are the same. Due to the principle of like repels like, the two electromagnetic blocks 226 drive the two baffles 225 to overcome the torsion force of the torsion spring and rotate in the direction away from each other, so that the hopper 222 opens.

[0025] When the hopper 222 is opened, the ore particles in the hopper 222 fall down. At this time, the heated air blows on the falling ore particles, so that when the hot air blows on the ore particles, the heat it carries will accelerate the evaporation of moisture on the surface of the ore, thereby achieving a drying effect. Since the ore particles are bonded and agglomerated due to moisture, the bonding force and adsorption force between the ore particles will be greatly reduced when the ore particles are dried. At the same time, under the dynamic action of the hot air, the agglomerated ore particles will gradually disperse and re-form independent small particles, so that these independent small particles can fall into the discharge port along the trough 223. 21, so that the ore particles falling into the discharge port 21 can fall to the detection port 11, so that the ore particles falling into the detection port 11 can be irradiated by the laser emitted by the laser transmitter in the laser particle size analyzer body 1, and the scattered light generated by the irradiation will be received by the detection equipment in the laser particle size analyzer body 1, and the true size of each particle can be more accurately identified according to the angle and intensity of the scattered light, so that the obtained ore particle size distribution data can more accurately reflect the actual proportion of particles of different particle sizes in the ore, and the ore particle size measurement result will be closer to the true size of the ore particles.

[0026] Since the blowing effect of airflow on ore particles mostly occurs below the hopper 222, its purpose is to blow the ore particles falling from the hopper 222. However, when the ore particles adhere to the inner wall of the hopper 222, some particles cannot fall normally to participate in the detection, which will cause deviations in the proportion of each particle size interval in the particle size distribution data statistics process, and cannot accurately present the true particle size distribution characteristics of the ore.

[0027] In this regard, the present invention provides a cleaning rod 25 so that the driving motor 262 drives the cleaning rod 25 through the connecting rod 261 and the transmission belt 266. When the cleaning rod 25 rotates in the hopper 222, it can have direct physical contact with the ore particles adhered to the inner wall of the hopper 222. This contact, on the one hand, produces a certain friction and impact force on the ore particles, thereby destroying the adhesion between the particles and the inner wall of the hopper 222, so that the originally adhered particles are separated from the inner wall and fall normally for detection. On the other hand, the rotating cleaning rod 25 can drive the overall flow of the ore particles in the hopper 222. This flow can break the static state of the particles in the hopper 222 and reduce the adhesion phenomenon caused by the particles staying in a certain position for a long time. At the same time, the flowing particles will also have a certain scouring effect on the adhered particles on the inner wall, further causing them to fall off, so that the particles in the hopper 222 can fall normally for detection, avoiding deviations in the proportions of each ore particle size range in the statistical process of ore particle size distribution data, so as to ensure that the actual particle size distribution characteristics of the current ore are more accurate.

[0028] The air cavity 24 is set to be spiral because the spiral air cavity 24 can realize a longer cavity layout in a limited space. Compared with the linear air cavity 24, it can use the space more effectively. In addition, a longer cavity means that the contact area between the air and the inner wall of the pipe is larger. On the one hand, the larger heat exchange area enables the heat to be transferred to the heated gas more evenly. On the other hand, during the heat transfer process, the heated gas can more fully absorb the heat emitted by the pipe, thereby improving the heat exchange efficiency, allowing the gas to reach the required temperature faster, thereby improving the drying effect of the gas on the detected ore particles, further reducing the occurrence of agglomeration, making the particle size distribution data closer to the actual situation of the ore, and improving the accuracy of the particle size measurement results.

[0029] As an embodiment of the present invention, a sealing cover 27 is fixedly connected to the upper end of the cleaning rod 25; the cleaning rod 25 is slidably connected to the connecting rod 261 through the sealing cover 27; the sealing cover 27 is fixedly connected to the bottom of the groove 26 through a connecting spring 271; an electromagnetic sheet 272 is embedded at one end of the sealing cover 27 close to the bottom of the groove 26.

[0030] As an embodiment of the present invention, the surface of the connecting rod 261 is provided with a spring hose 242 connected to the air cavity 24; an air channel 251 is opened inside the cleaning rod 25; the end of the spring hose 242 away from the air cavity 24 is connected to the air channel 251; the end of the air channel 251 away from the spring hose 242 passes through the lower end of the cleaning rod 25.

[0031] As an embodiment of the present invention, a straight rod 263 is arranged between the connecting rod 261 and the bottom of the groove 26; the driving motor 262 is connected to the straight rod 263 by a transmission belt 266; a rectangular groove 264 is opened at one end of the connecting rod 261 close to the straight rod 263; the straight rod 263 is slidably connected in the rectangular groove 264; the straight rod 263 and the bottom of the rectangular groove 264 are fixedly connected by a support spring 265.

[0032] As an embodiment of the present invention, a pressure-stabilizing valve 243 is fixedly installed inside the spring hose 242 .

[0033] When working, when the present invention detects iron ore particles, the electromagnetic block 226 embedded in the baffle 225 will adsorb the iron ore particles, thereby preventing the adsorbed iron ore particles from falling normally to participate in the detection. This will cause deviations in the proportion of each particle size interval during the particle size distribution data statistics process, and it is impossible to accurately present the true particle size distribution characteristics of the ore.

[0034] In this regard, the present invention sets the sealing cover 27 and the connecting spring 271. In the initial state, the bottom of the groove 26 is inlaid with an iron sheet, and the cleaning rod 25 pushes the two baffles 225 away from each other. Before the user opens the machine cover 23, the user first controls the electromagnetic sheet 272 to be energized, so that the energized electromagnetic sheet 272 generates an adsorption force on the iron sheet at the bottom of the groove 26, so that the sealing cover 27 squeezes the connecting spring 271 to move toward the bottom of the groove 26 under the drive of the electromagnetic sheet 272, that is, the sealing cover 27 slides and rises along the surface of the connecting rod 261, so that the sealing cover 27 drives the cleaning rod 25 to rise synchronously. When the cleaning rod 25 no longer pushes the baffle 225, that is, the cleaning rod 25 completely enters the hopper 222, the baffle 225 is reset and blocks the lower end of the hopper 222. At this time, the user moves into the hopper 222. After adding ore particles, when the ore particles are added and the temperature of the air flowing in the air cavity 24 reaches the set temperature, the user controls the current passed through the electromagnetic sheet 272 to be continuously reduced, so that the adsorption force of the sealing cover 27 on the iron sheet in the groove 26 is weakened, so that the sealing cover 27 drives the cleaning rod 25 to descend under the push of the restoring force of the connecting spring 271, so that the cleaning rod 25 can continuously push the baffle 225 to overcome the torsion force of the torsion spring and rotate in the direction away from each other, so that the baffle 225 is continuously opened, so that the ore electromagnetic block 226 does not need to be energized, and the electromagnetic block 226 is prevented from being applied to the iron ore particles, and then the iron ore particles in the hopper 222 can all fall normally for detection, so as to avoid deviations in the proportion of each particle size range, so as to ensure that the actual particle size distribution characteristics of the current ore are more accurate, and improve the accuracy of the particle size measurement results.

[0035] Since the diameter ranges of ore particles detected by different models of laser particle size analyzer bodies 1 are not the same, that is, when the diameter range of ore particles is large, in order to facilitate the hopper 222 of the laser particle size analyzer body 1 used to effectively scoop up ore particles with a large diameter range, the diameter and depth of the hopper 222 used are also large. Therefore, after the hopper 222 is replaced, in order to ensure that the cleaning rod 25 can effectively clean the hoppers 222 of different diameters and depths, the present invention arranges a straight rod 263 so that the straight rod 263 can increase the distance between the connecting rod 261 and the bottom of the groove 26, thereby ensuring that the connecting rod 261 can drive the sealing cover 27 and the cleaning rod 25 to go deeper into the hopper 222 with a large diameter and depth.

[0036] When in use, since flanges are provided on both ends of the connecting rod 261, when the sealing cover 27 rises to the flange of the connecting rod 261 close to one end of the straight rod 263, the sealing cover 27 will push the connecting rod 261 to continue to move toward the bottom of the groove 26 through the flange on the surface of the connecting rod 261. At this time, the straight rod 263 continues to penetrate into the rectangular groove 264 at one end of the connecting rod 261 relative to the connecting rod 261, so that the straight rod 263 squeezes the supporting spring 265 into the rectangular groove 264. At this time, the sealing cover 27 drives the cleaning rod 25 to no longer push the baffle 225, so that the baffle 225 is under the action of the restoring force of the torsion spring. The user resets the air chamber 24, and then after the gas temperature in the air chamber 24 reaches the set temperature, the user controls the current passed into the electromagnetic sheet 272 to continuously decrease, so that the connecting spring 271 pushes the connecting rod 261 away from the straight rod 263, so that the straight rod 263 extends out of the rectangular groove 264 relative to the connecting rod 261, so that the connecting rod 261 drives the cleaning rod 25 through the sealing cover 27 to push the two baffles 225 away from each other. Because the diameter range of the ore particles increases, the diameter of the lower end of the hopper 222 increases. Therefore, in order to ensure that the ore particles with a large diameter range can effectively fall from the lower end of the hopper 222, it is necessary to continuously control the electromagnetic sheet. The current passed through 272 decreases until the two baffles 225 are fully opened, so that the lower end of the hopper 222 is opened, and the ore particles can fall from the lower end of the hopper 222. At this time, the cleaning rod 25 is in sliding contact with the inner wall of the hopper 222, and then the driving motor 262 is controlled to operate, so that the driving motor 262 can drive the cleaning rod 25 to rotate, so that the cleaning rod 25 pushes the ore particles in the hopper 222 to rotate in the hopper 222, so as to prevent the ore particles from adhering to the inner wall of the hopper 222. In addition, the spring hose 242 is provided so that in the process of passing gas into the air cavity 24, a part of the hot air can pass through The spring hose 242 flows into the air channel 251 on the surface of the cleaning rod 25, so that the hot air is transmitted to the ore particles in the hopper 222 through the inner wall of the cleaning rod 25, so that the moisture on the surface of the ore particles can be quickly evaporated by the heat, thereby improving the drying speed of the moisture on the surface of the ore particles, and at the same time avoiding the ore particles from adhering to the inner wall of the hopper 222, ensuring that the particles in the hopper 222 can fall normally for detection, avoiding deviations in the proportion of each ore particle size range in the process of ore particle size distribution data statistics, so as to ensure that the actual particle size distribution characteristics of the current ore are more accurate, so that the practicality of the present invention is effectively improved.

[0037] The purpose of setting the pressure regulating valve 243 is to control the amount of air entering the spring hose 242 from the air cavity 24, so as to avoid the amount of air ejected from the air cavity 24 being too small, and to ensure that the intensity of the air flow ejected from the air cavity 24 can stably blow the ore particles falling from the hopper 222 along the material trough 223 into the discharge port 21, thereby improving the practical application effect of the present invention.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An ore particle size distribution and particle size diameter detection device, comprising: A laser particle size analyzer body (1) and a sample injector (2) mounted on the upper end thereof; a detection port (11) is provided on the upper end of the laser particle size analyzer body (1); a discharge port (21) is provided on the lower end of the sample injector (2); the discharge port (21) is directly opposite to the detection port (11); the characteristics are: The sample injector (2) further comprises a body (22); a cover (23) is mounted on the upper end of the body (22); the discharge port (21) is provided at the lower end of the body (22); a material discharge tray (221) is mounted on the upper end of the body (22); a material hopper (222) is mounted on the upper end of the material discharge tray (221); a material trough (223) is provided inside the material discharge tray (221); one end of the material trough (223) is directly opposite to the discharge port (21); the material trough (223) is provided with an air inlet (224) at one end; the air inlet (224) is connected to the laser particle size analyzer body (1) through an air pipe; an air cavity (24) is provided inside the body (22); the air cavity (24) is located between the air inlet (224) and the material trough (223); one end of the air cavity (24) is connected to the air inlet (224), and the other end is connected to the material trough (223); a resistance wire (241) is fixedly installed in the air cavity (24); A cleaning unit is installed at the lower end of the machine cover (23); the cleaning unit is used to clean the hopper (222).

2. The ore particle size distribution and particle size diameter detection device according to claim 1, characterized in that: The cleaning unit comprises a cleaning rod (25); the machine cover (23) is rotatably connected to the machine body (22); a groove (26) is provided at one end of the machine cover (23) close to the machine body (22); a connecting rod (261) is rotatably installed in the groove (26); a driving motor (262) is fixedly installed at the upper end of the machine cover (23); the driving motor (262) drives the connecting rod (261) to rotate via a transmission belt (266); and the cleaning rod (25) is slidably connected to the connecting rod (261).

3. The ore particle size distribution and particle size diameter detection device according to claim 2, characterized in that: The air cavity (24) is configured in a spiral shape.

4. The ore particle size distribution and particle size diameter detection device according to claim 3 is characterized in that: The lower end of the hopper (222) is rotatably connected to a baffle (225) via a torsion spring; two baffles (225) are provided; and an electromagnetic block (226) is embedded on the mutually adjacent sides of the two baffles (225).

5. The ore particle size distribution and particle size diameter detection device according to claim 4, characterized in that: The upper end of the cleaning rod (25) is fixedly connected with a sealing cover (27); the cleaning rod (25) is slidably connected to a connecting rod (261) via the sealing cover (27); the sealing cover (27) is fixedly connected to the bottom of the groove (26) via a connecting spring (271); an electromagnetic sheet (272) is embedded at one end of the sealing cover (27) close to the bottom of the groove (26).

6. The ore particle size distribution and particle size diameter detection device according to claim 5, characterized in that: The surface of the connecting rod (261) is sleeved with a spring hose (242) which is in communication with the air cavity (24); an air passage (251) is provided inside the cleaning rod (25); one end of the spring hose (242) away from the air cavity (24) is in communication with the air passage (251); and one end of the air passage (251) away from the spring hose (242) passes through the lower end of the cleaning rod (25).

7. The ore particle size distribution and particle size diameter detection device according to claim 6, characterized in that: A straight rod (263) is arranged between the connecting rod (261) and the bottom of the groove (26); the driving motor (262) is connected to the straight rod (263) by belt transmission via a transmission belt (266); a rectangular groove (264) is provided at one end of the connecting rod (261) close to the straight rod (263); the straight rod (263) is slidably connected in the rectangular groove (264); and the straight rod (263) and the bottom of the rectangular groove (264) are fixedly connected via a support spring (265).

8. The ore particle size distribution and particle size diameter detection device according to claim 7, characterized in that: A pressure-stabilizing valve (243) is fixedly installed inside the spring hose (242).

Images