An automated sampling system for solid particles

Abstract

The invention relates to an automated sampling technology for solid particles, and is used to solve the problems of obstruction in sampling by inserting a sampling tube, difficulty in sampling operation, inconvenience in moving the sampling tube due to the fixed length, and inability to continue sampling the sample inside the sampling tube after the lower end of the sampling tube is inserted into the bottom of a container. The invention specifically relates to an automated sampling system for solid particles, comprising a robot base. The invention loosens the sample pile during rotation by an auger arranged at the lower end of the sampling tube, and then transports the sample pile to the inside of the sampling tube, so that the resistance received by the sampling tube in the process of inserting the solid particles to the inside is reduced, and the liquid inside the hydraulic main box is gradually transported to the inside of the hydraulic box through the hydraulic pipe, and the pushing rod connected to the inside of the hydraulic box is pushed to drive the sampling tube to extend, so as to achieve the purpose of adjusting the length of the sampling tube, and the external gas is sucked into the inside of the sampling tube from the position of the suction hole through the connection between the air supply pipe and the air supply hole, and the solid particle sampling operation is continued by the driving of the air flow.

Description

Technical Field

[0001] The invention relates to a solid particle automatic sampling technology, in particular to an automatic sampling system for solid particles. Background Art

[0002] Sampling, also known as random sampling, refers to randomly obtaining a suitable and representative sample for inspection from a large number of samples. Its purpose is to obtain a sample of suitable quantity for inspection from a large number of samples, and this sample can accurately represent the composition of the batch of samples to be inspected;

[0003] In the prior art, when the automated sampling equipment is sampling solid particles, as the sampling tube is inserted downward into the solid particle pile, the upper solid particles of the solid particle pile press against the lower solid particles, and as the sampling tube is inserted downward, the resistance to the sampling tube gradually increases, making it difficult to insert the sampling tube downward for sampling, and when the force acting on the sampling tube to be inserted downward is too large, the sampling tube is easily damaged; the sampling tube used for sampling is mostly an integrated structure, and different sampling requirements require sampling tubes of different lengths. During use, the sampling tube with a longer length is easy to collide with other equipment, which is inconvenient to use; the lower end of the sampling tube is a horizontal structure, so that after the lower end of the sampling tube is inserted into the bottom of the container, the lower end of the sampling tube is in close contact with the horizontal surface of the bottom of the container, resulting in the lower end of the sampling tube being sealed, and the solid particles inside the sampling tube are difficult to continue to be sampled by means of suction, and the solid particles inside the sampling tube cannot be sampled, resulting in a reduction in the sampling amount, so that the subsequent detection results of the solid particles are inaccurate due to insufficient sampling amount;

[0004] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0005] The purpose of the present invention is to loosen the sample pile and transport it into the sampling tube during the rotation of the auger arranged at the lower end of the sampling tube, so that the resistance received by the sampling tube in the process of inserting solid particles into the inside is reduced, and the liquid in the hydraulic main box is gradually transported to the inside of the hydraulic box through the hydraulic pipe, pushing the pushing rod connected to the inside of the hydraulic box to drive the sampling tube to extend, so as to achieve the purpose of adjusting the length of the sampling tube, and through the connection between the air supply pipe and the air supply hole, the external gas is sucked into the sampling tube from the position of the suction hole, and the solid particle sampling operation is continued by the air flow, so as to solve the problems of obstruction of sampling tube insertion, difficulty in sampling operation, inconvenience in moving the fixed length of the sampling tube, and inability to continue sampling the sample inside the sampling tube after the lower end of the sampling tube is inserted to the bottom of the container. An automatic sampling system for solid particulate matter is proposed.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] An automated sampling system for solid particulate matter comprises a robot base, wherein the upper surface of the robot base is rotatably connected to a sampling robot, the end of the sampling robot away from the robot base is rotatably connected to a sampling tube, the sampling tube is divided into three types: a telescopic tube lower section, a telescopic tube middle section and a telescopic tube upper section, a connecting plate is connected to the inner side wall of the telescopic tube lower section, a rotating shaft is rotatably connected to the middle position of the upper surface of the connecting plate through a rotating sleeve, an auger is connected below the outer side wall of the rotating shaft, a plurality of evenly distributed limit rods are connected to the upper surface of the auger, a connecting spring is connected to the upper surface of the auger corresponding to the position of the limit rod, the upper end of the limit rod is connected to a limit disk, and the shape of the lower end of the rotating shaft is spherical.

[0008] As a preferred embodiment of the present invention, an elastic groove is provided below the inner wall of the lower section of the telescopic tube, a spring plate is rotatably connected to one side of the lower surface of the elastic groove, connecting cavities are provided on the upper and lower surfaces of the elastic groove, a cavity is provided inside the lower section of the telescopic tube at a position corresponding to the connecting cavity, a sealing cloth is connected to one side of the spring plate close to the connecting cavity, a traction spring is connected to the position of the sealing cloth inside the cavity, and an energized spring is connected to the rear surface of the elastic groove corresponding to the elastic plate.

[0009] As a preferred embodiment of the present invention, an elastic cavity is opened on the other side of the inner wall of the lower section of the telescopic tube near the elastic groove, a switch metal sheet group is connected inside the elastic cavity, a squeezing button is connected to the position of the switch metal sheet group inside the elastic cavity through a reset spring, and an insulating plate is connected to one end of the squeezing button near the elastic cavity.

[0010] As a preferred embodiment of the present invention, a telescopic tube lower section is provided with a telescopic tube middle section on the outer wall thereof, and a telescopic tube upper section is provided with a telescopic tube middle section on the outer wall thereof. A limiting ring is integrally formed on the outer wall of the telescopic tube lower section and the telescopic tube middle section, and a limiting ring is also integrally formed at the position of the limiting ring corresponding to the position of the limiting ring below the inner wall of the telescopic tube middle section and the telescopic tube upper section.

[0011] As a preferred embodiment of the present invention, a hydraulic box is connected to the upper inner wall of the lower section of the telescopic tube, the middle section of the telescopic tube and the upper section of the telescopic tube, a push rod is slidably connected to the lower part of the hydraulic box, hydraulic pipes are connected to the upper surfaces of the lower section of the telescopic tube and the middle section of the telescopic tube, and the hydraulic boxes connected to the middle section of the telescopic tube and the upper section of the telescopic tube are provided with grooves corresponding to the lower section of the telescopic tube.

[0012] As a preferred embodiment of the present invention, a plurality of evenly distributed gas holes are provided on the upper surface of the lower section of the telescopic tube, a gas pipe is connected to the upper surface of the lower section of the telescopic tube at the position corresponding to the gas holes, a plurality of holes are provided on the outer side of the upper surface of the upper section of the telescopic tube, a sealing ring is connected to the inner wall of the hole, a movable groove is provided inside the lower section of the telescopic tube corresponding to the upper side of the limit plate, a blocking groove is provided inside the lower section of the telescopic tube at the position corresponding to the movable groove, a gas baffle is slidably connected inside the blocking groove, a connecting ring sleeve is connected to the inner side wall of the gas baffle near the inner side wall of the lower section of the telescopic tube, a connecting hole is provided below the outer side wall of the gas baffle, and an air suction hole is provided below the inner side wall of the lower section of the telescopic tube corresponding to the lower end of the gas hole.

[0013] As a preferred embodiment of the present invention, a pulling groove is opened on one side of the outer wall of the gas transmission pipe, a pulling gear is rotatably connected to the outer wall of the upper section of the telescopic tube corresponding to the position of the sealing ring, a connecting shaft is connected to the middle position of the outer wall of the pulling gear, and transmission gears are connected to both ends of the connecting shaft, and a connecting gear is rotatably connected to the outer wall of the upper section of the telescopic tube corresponding to the positions of two adjacent transmission gears.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The auger arranged at the lower end of the sampling tube loosens the accumulated solid particles during rotation and then transports them into the sampling tube, so that the resistance received by the sampling tube during the process of inserting the solid particles into the inner part is reduced, which is convenient for sampling operation. Moreover, the elastic plate on the lower section of the telescopic tube can be quickly pushed and rotated by the electrified spring under the control of the squeezing button to eject the impurities blocked at the feeding position of the auger, so that the sampling operation of the sampling tube can be carried out smoothly.

[0016] 2. The lower section, middle section and upper section of the telescopic tube are mutually sleeved under the action of the hydraulic box and the hydraulic main box, and the liquid inside the hydraulic main box is gradually transported to the inside of the hydraulic box through the hydraulic tube, pushing the push rod connected to the inside of the hydraulic box to drive the lower section and middle section of the telescopic tube to extend outward, so as to achieve the purpose of adjusting the length of the sampling tube, and the elongation and shortening length of the sampling tube can be calculated by the output liquid volume of the hydraulic main box, which is convenient for control;

[0017] 3. Through the connection between the air supply hole and the air suction hole on the lower section of the telescopic tube, after the lower end of the sampling tube is sealed due to contact with the bottom surface of the container, the sampling tube can be connected with the air supply hole through the air supply pipe to suck the external gas into the sampling tube from the position of the air suction hole, and continue to use the airflow to perform the sampling operation of solid particles. In the process of telescoping the sampling tube, the air supply pipe can move the length inside and outside the sampling tube by pulling the gear, which will not hinder the sampling of solid particles inside the sampling tube and will not affect the normal operation of the gas sampling equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0019] Figure 1 It is the main structure diagram of the present invention;

[0020] Figure 2 It is a structural diagram of the elastic groove of the present invention;

[0021] Figure 3 For the present invention Figure 2 A magnified structural diagram of part A;

[0022] Figure 4 It is the structural diagram of the auger of the present invention;

[0023] Figure 5 It is a structural diagram of the telescopic tube of the present invention;

[0024] Figure 6 It is a structural diagram of the gas transmission pipe of the present invention;

[0025] Figure 7 It is a structural diagram of the gas transmission baffle of the present invention;

[0026] Figure 8 It is the internal structure diagram of the telescopic tube of the present invention;

[0027] In the figure: 1. robot base; 2. sampling robot; 3. sampling tube; 41. lower section of telescopic tube; 42. middle section of telescopic tube; 43. upper section of telescopic tube; 44. hydraulic tube; 45. hydraulic box; 46. push rod; 47. limit ring; 51. elastic groove; 52. connecting cavity; 53. elastic plate; 54. rotating shaft; 55. auger; 56. limit plate; 57. connecting spring; 58. limit rod; 59. connecting plate; 61. air delivery hole; 62. sealing ring; 63. air delivery pipe; 64. pulling gear; 65. connecting ring sleeve; 66. movable groove; 67. air suction hole; 68. air delivery baffle; 69. connecting hole; 610. pulling groove. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0029] Embodiment 1:

[0030] See also Figure 1-4As shown, an automated sampling system for solid particles comprises a robot base 1, the upper surface of the robot base 1 is rotatably connected to a sampling robot 2, one end of the sampling robot 2 away from the robot base 1 is rotatably connected to a sampling tube 3, the sampling tube 3 is divided into three types: a telescopic tube lower section 41, a telescopic tube middle section 42 and a telescopic tube upper section 43, a connecting plate 59 is connected to the inner side wall of the telescopic tube lower section 41, a rotating shaft 54 ​​is rotatably connected to the middle position of the upper surface of the connecting plate 59 through a rotating sleeve, the upper end of the rotating shaft 54 ​​is cross-shaped, the upper end of the rotating shaft 54 ​​is connected to a limiting block, the telescopic tube middle section 42 is connected to a cross connecting sleeve 1 at a position corresponding to the rotating shaft 54, and a cross connecting sleeve set is arranged on the rotating shaft 54. The outer side of the shaft 54, and will not be separated from the rotating shaft 54 ​​by the restriction of the limit block. A cross connecting sleeve 2 is connected to the position of the rotating shaft 54 ​​corresponding to the upper section 43 of the telescopic tube. A cross connecting sleeve set is arranged on the outer side of the cross connecting sleeve 2, and will not be separated from the cross connecting sleeve 1 by the limit block on the outer side of the cross connecting sleeve 2, so that the motor connected to the cross connecting sleeve 2 can drive the rotating shaft 54 ​​to rotate, and will not hinder the extension and contraction of the sampling tube 3. An auger 55 is connected to the lower side of the outer wall of the rotating shaft 54, and a plurality of evenly distributed limit rods 58 are connected to the upper surface of the auger 55. A connecting spring 57 is connected to the position of the upper surface of the auger 55 corresponding to the limit rod 58. The upper end of the positioning rod 58 is connected to the limiting plate 56, and the limiting rod 58 passes through the rotating sleeve on the connecting plate 59 to be connected to the limiting plate 56. The outer diameter of the limiting plate 56 is the same as the inner diameter of the lower section 41 of the telescopic tube. The shape of the lower end of the rotating shaft 54 ​​is spherical, so that the friction between the lower end of the rotating shaft 54 ​​and the bottom surface of the container is small when they contact each other. An elastic groove 51 is provided below the inner side wall of the lower section 41 of the telescopic tube, and a spring plate 53 is rotatably connected to one side of the lower surface of the elastic groove 51. The shape of the spring plate 53 is arc-shaped, and the curvature of the curvature is the same as that of the lower section 41 of the telescopic tube. The upper and lower surfaces of the elastic groove 51 are both provided with connecting cavities 52. The position of the lower section 41 of the telescopic tube corresponding to the connecting cavity 52 A cavity is provided, a sealing cloth is connected to one side of the elastic plate 53 near the connecting cavity 52, a traction spring is connected to the position of the sealing cloth inside the cavity, an energizing spring is connected to the rear surface of the elastic plate 53 inside the elastic groove 51, and the connection circuit of the energizing spring is connected in series with the switch metal sheet group on the same circuit, an elastic cavity is provided on the other side of the inner wall of the lower section 41 of the telescopic tube near the elastic groove 51, a switch metal sheet group is connected inside the elastic cavity, the switch metal sheet group includes a pair of switch metal sheets, and the two switch metal sheets are in close contact with each other, a pressing button is connected to the position of the switch metal sheet group inside the elastic cavity through a reset spring, and an insulating plate is connected to one end of the pressing button near the elastic cavity;

[0031] In the prior art, when the automatic sampling device is sampling solid particles, as the sampling tube 3 is inserted downward into the sampled solid particle pile, the upper solid particles of the solid particle pile press the lower solid particles, and as the sampling tube 3 is inserted downward, the resistance to the sampling tube 3 gradually increases, making it difficult to insert the sampling tube 3 downward for sampling, and if the force acting on the sampling tube 3 to insert downward is too large, the sampling tube 3 is easily damaged;

[0032] When the sampling tube 3 is inserted downward to sample solid particles, the automatic sampling system can transmit a signal to control the motor to drive the rotating shaft 54 ​​to rotate. The lower end of the rotating shaft 54 ​​is exposed to the outside of the lower section 41 of the telescopic tube, so that when the rotating shaft 54 ​​rotates, the solid particles can be stirred and loosened by the auger 55 connected to the outside, so that the loosened solid particles can be sampled under the air suction action of the suction device on the sampling tube 3. After the loosened solid particles move along the trajectory of the auger 55, they rise along the inside of the sampling tube 3 under the action of the suction. As the resistance of the sampling tube 3 is gradually increased, the rotating shaft 54 ​​is pressed to move upward to press the connecting spring 57 causes deformation and contraction. Due to the stirring action of the auger 55, solid particles are dug out. There is a gap inside the solid particle pile, which is convenient for the sampling tube 3 to move downward. After the sampling tube 3 is inserted to the bottom of the container, the spherical lower end of the rotating shaft 54 ​​contacts the bottom surface. As the sampling tube 3 continues to be inserted downward, the deformation and contraction of the connecting spring 57 increases. When the sampling tube 3 contacts the bottom surface, the deformation of the connecting spring 57 reaches the maximum. The pressure data detected by the pressure sensor connected to one end of the connecting spring 57 reaches the set value, so that the automatic sampling system transmits a signal to the sampling robot 2 to stop the insertion operation of the sampling tube 3 to prevent damage to the sampling tube 3.

[0033] When sampling solid particles during the rotation of the auger 55, the solid particle pile contains larger particle impurities. When sampling, the larger particle impurities are easy to block the feeding position of the auger 55. The power-on spring is energized and contracted, and the elastic plate 53 is pulled to shrink into the connecting cavity 52. ​​After the auger 55 rotates to the other side of the connecting cavity 52, the squeezing button is squeezed and embedded in the elastic cavity. The insulating plate on the squeezing button is inserted into the middle of the switch metal sheet group, so that the two switch metal sheets in contact with each other are separated, and the circuit supplying power to the power-on spring is disconnected. The elastic plate 53 is quickly rotated and opened under the action of the power-on spring, and the other side of the auger 55 is blocked. The impurities at the position are knocked to make the impurities detach from the position without hindering the normal digging operation of the auger 55. During the pop-up process of the elastic plate 53, the sealing cloth connected to the three sides of the elastic plate 53 is pulled to move, so that the traction spring connected to the sealing cloth is stretched, and solid particles will not enter the elastic groove 51 to hinder the movement of the elastic plate 53. After the auger 55 rotates away from the squeezing button position, the squeezing button pops out under the action of the reset spring, so that the two switch metal sheets of the switch metal sheet group contact each other again, and the circuit supplies power to the energized spring, so that the elastic plate 53 is reset under the traction of the energized spring, and the sealing cloth is reset under the action of the traction spring.

[0034] Embodiment 2:

[0035] See also Figure 5-6 and Figure 8 As shown, a telescopic tube lower section 41 is provided with a telescopic tube middle section 42 on the outer wall, a telescopic tube middle section 42 is provided with a telescopic tube upper section 43 on the outer wall, and a limiting ring 47 is integrally formed on the outer walls of the telescopic tube lower section 41 and the telescopic tube middle section 42. The limiting ring 47 restricts the connection between the telescopic tube lower section 41 and the telescopic tube middle section 42, the telescopic tube middle section 42 and the telescopic tube middle section 42, and the telescopic tube middle section 42 and the telescopic tube upper section 43. The limiting ring 47 is also integrally formed at the position of the corresponding limiting ring 47 below the inner side wall of the telescopic tube middle section 42 and the telescopic tube upper section 43. A hydraulic box 45 is connected to the inner wall of the upper section 43 of the telescopic tube, a push rod 46 is slidably connected to the lower section 41 of the telescopic tube and the upper surface of the middle section 42 of the telescopic tube. A hydraulic pipe 44 is connected to the upper surface of the lower section 41 of the telescopic tube and the middle section 42 of the telescopic tube. The length of the sampling tube 3 can be adjusted by extending and shortening the exposed length of the push rod 46 between the lower section 41 of the telescopic tube and the middle section 42 of the telescopic tube, and between the middle section 42 of the telescopic tube and the upper section 43 of the telescopic tube. The hydraulic box 45 connected to the middle section 42 of the telescopic tube and the upper section 43 of the telescopic tube is provided with a groove corresponding to the lower section 41 of the telescopic tube, so that the hydraulic box 45 will not hinder the contraction of the sampling tube 3.

[0036] In the prior art, the sampling tube 3 used for sampling is mostly an integrated structure. Different sampling requirements require sampling tubes 3 of different lengths. During use, the sampling tube 3 with a longer length is prone to collision with other equipment, which is inconvenient to use.

[0037] The sampling tube 3 is divided into three types: a telescopic tube lower section 41, a telescopic tube middle section 42 and a telescopic tube upper section 43. The sampling tube 3 is composed of a telescopic tube lower section 41, multiple telescopic tube middle sections 42 and a telescopic tube upper section 43. The hydraulic box 45 connected to the telescopic tube middle section 42 and the telescopic tube upper section 43 is connected to the hydraulic main tank of the automatic sampling system. The length of the sampling tube 3 can be adjusted by the hydraulic main tank and transported to the hydraulic box 45 on the telescopic tube middle section 42 and the telescopic tube upper section 43 in turn through the hydraulic pipe 44. The capacity inside each hydraulic box 45 is the same, so that the automatic sampling system can calculate the extension length of the sampling tube 3 according to the amount of liquid transported, so as to prevent the sampling tube 3 from being extended too long, resulting in the sampling tube 3 and the container being squeezed against each other and causing damage to both.

[0038] Embodiment 3:

[0039] See also Figure 5-7As shown, a plurality of evenly distributed gas delivery holes 61 are provided on the upper surface of the telescopic tube lower section 41, and a gas delivery pipe 63 is connected to the position of the gas delivery holes 61 on the upper surface of the telescopic tube lower section 41, a plurality of holes are provided on the outer side of the upper surface of the telescopic tube upper section 43, and a sealing ring 62 is connected to the inner wall of the hole, and a plurality of evenly distributed balls are arranged inside the sealing ring 62 to reduce the friction of the gas delivery pipe 63 when it moves, and the gas delivery pipe 63 is connected to the inner side of the sealing ring 62, and a movable groove 66 is provided above the corresponding limit plate 56 inside the telescopic tube lower section 41, and the connecting position of the connecting ring sleeve 65 and the gas delivery baffle 68 can slide up and down inside the movable groove 66, and a blocking groove is provided at the position of the movable groove 66 inside the telescopic tube lower section 41, and a gas delivery baffle 68 is slidably connected inside the blocking groove, and a connecting ring sleeve 65 is connected to the inner wall of the gas delivery baffle 68 near the interior of the telescopic tube lower section 41, and the outer diameter of the connecting ring sleeve 65 is equal to the inner diameter of the lower section 41 of the telescopic tube. The diameter is large, and the connecting ring sleeve 65 is located above the limit plate 56. A connecting hole 69 is provided below the outer wall of the gas delivery baffle 68. An air suction hole 67 is provided below the inner wall of the lower section 41 of the telescopic tube at a position corresponding to the lower end of the gas delivery hole 61. The air suction hole 67 is connected to the lower end of the gas delivery hole 61. A pulling groove 610 is provided on one side of the outer wall of the gas delivery pipe 63. A plurality of convex teeth are provided inside the pulling groove 610. A pulling gear 64 is rotatably connected at the position of the sealing ring 62 on the outer wall of the upper section 43 of the telescopic tube. The convex teeth and the pulling gear 64 are engaged with each other. A connecting shaft is connected at the middle position of the outer wall of the pulling gear 64. One end of one of the connecting shafts is connected to the output end of the stepping motor and is driven to rotate by the stepping motor. Transmission gears are connected to both ends of the connecting shaft. A linkage gear is rotatably connected at the outer wall of the upper section 43 of the telescopic tube corresponding to the positions of two adjacent transmission gears. The transmission gear and the linkage gear are perpendicular to each other and engaged with each other, and are driven to rotate.

[0040] In the prior art, the lower end of the sampling tube 3 is a horizontal structure, so that after the lower end of the sampling tube 3 is inserted into the bottom of the container, the lower end of the sampling tube 3 is in close contact with the horizontal surface of the bottom of the container, resulting in the lower end of the sampling tube 3 being sealed, and the solid particles inside the sampling tube 3 are difficult to continue to be sampled by means of air extraction, and the solid particles inside the sampling tube 3 cannot be sampled, resulting in a reduction in the sampling amount, so that the subsequent detection results of the solid particles are inaccurate due to insufficient sampling amount;

[0041] When the lower end of the sampling tube 3 is inserted into the container containing solid particles and the lower end of the sampling tube 3 is kept horizontal with the bottom of the container, the rotating shaft 54 ​​inside the telescopic tube lower section 41 moves upward by extrusion, contacts the connecting ring sleeve 65 during the movement and drives the connecting ring sleeve 65 to slide upward in the movable groove 66, and the connecting ring sleeve 65 moves upward to drive the gas delivery baffle 68 to move upward, and after the connecting ring sleeve 65 rises to the maximum height, the connecting hole 69 on the gas delivery baffle 68 is aligned with the position of the suction hole 67, and the upper end of the gas delivery hole 61 is connected with the outside through the gas delivery pipe 63, so that the suction device can absorb external gas to the position of the telescopic tube lower section 41 through the gas delivery pipe 63, and the inhaled gas carries the solid particles inside the telescopic tube lower section 41 to move upward, so as to achieve the sampling effect. When the automatic sampling system transmits a signal to control the hydraulic main box to contract the sampling tube 3, the data processing module of the automatic sampling system can calculate the sampling amount by the amount of liquid flowing back to the hydraulic main box. The retracted length of the tube 3 can be calculated according to the radius of the pulling gear 64 to obtain the circumference of the pulling gear 64. The retracted length of the sampling tube 3 is divided by the circumference of the pulling gear 64 to obtain the number of rotations of the pulling gear 64, thereby calculating the rotation angle of the pulling gear 64, and transmitting the data to the stepper motor controller to control the connecting shaft connected to the pulling gear 64 to rotate at a corresponding angle, so that when the sampling tube 3 is contracted, the air pipe 63 can be moved outward by the same length under the drive of the pulling gear 64, and the air pipe 63 inside the sampling tube 3 always remains straight, and will not affect the normal transportation of solid particles inside the sampling tube 3 due to looseness, and the overflowed air pipe 63 will not be folded or squeezed, and will not affect the air pipe 63 to continue to transport gas to the inside of the sampling tube 3. When the automatic sampling system transmits a signal to control the hydraulic main box to extend the sampling tube 3, the air pipe 63 moves synchronously to the inside of the sampling tube 3.

[0042] When the present invention is in use, the hydraulic box 45 connected to the telescopic tube middle section 42 and the telescopic tube upper section 43 is connected to the hydraulic main box of the automatic sampling system. The length adjustment of the sampling tube 3 can be carried out by the hydraulic main box through the hydraulic pipe 44 to the inside of the hydraulic box 45 on the telescopic tube middle section 42 and the telescopic tube upper section 43 in turn. The capacity inside each hydraulic box 45 is the same, so that the automatic sampling system can calculate the elongated length of the sampling tube 3 according to the amount of liquid delivered. The cross-sectional area of ​​the internal space of the hydraulic box 45 is fixed. The data of the amount of liquid output from the hydraulic main box divided by the data of the cross-sectional area of ​​the internal space of the hydraulic box 45 is the elongated length data of the sampling tube 3.

[0043] When the sampling tube 3 is inserted downward to sample solid particles, the automatic sampling system can transmit a signal to control the motor to drive the rotating shaft 54 ​​to rotate. The lower end of the rotating shaft 54 ​​is exposed to the outside of the lower section 41 of the telescopic tube, so that when the rotating shaft 54 ​​rotates, the solid particles can be stirred and loosened by the auger 55 connected to the outside, so that the loosened solid particles can be sampled under the air suction action of the suction device on the sampling tube 3. After the loosened solid particles move along the trajectory of the auger 55, they rise along the inside of the sampling tube 3 under the action of the suction. As the resistance of the sampling tube 3 is gradually increased, the rotating shaft 54 ​​is pressed to move upward to press the connecting spring 57 causes deformation and contraction. Due to the stirring action of the auger 55, solid particles are dug out. There is a gap inside the solid particle pile, which is convenient for the sampling tube 3 to move downward. After the sampling tube 3 is inserted to the bottom of the container, the spherical lower end of the rotating shaft 54 ​​contacts the bottom surface. As the sampling tube 3 continues to be inserted downward, the deformation and contraction of the connecting spring 57 increases. When the sampling tube 3 contacts the bottom surface, the deformation of the connecting spring 57 reaches the maximum. The pressure data detected by the pressure sensor connected to one end of the connecting spring 57 reaches the set value, so that the automatic sampling system transmits a signal to the sampling robot 2 to stop the insertion operation of the sampling tube 3 to prevent damage to the sampling tube 3.

[0044] When sampling solid particles during the rotation of the auger 55, the solid particle pile contains larger particle impurities. When sampling, the larger particle impurities are easy to block the feeding position of the auger 55. The power-on spring is energized and contracted, and the elastic plate 53 is pulled to shrink into the connecting cavity 52. ​​After the auger 55 rotates to the other side of the connecting cavity 52, the squeezing button is squeezed and embedded in the elastic cavity. The insulating plate on the squeezing button is inserted into the middle of the switch metal sheet group, so that the two switch metal sheets in contact with each other are separated, and the circuit supplying power to the power-on spring is disconnected. The elastic plate 53 is quickly rotated and opened under the action of the power-on spring, and the other side of the auger 55 is blocked. The impurities at the position are knocked to make the impurities detach from the position, which does not hinder the normal digging operation of the auger 55. During the popping-out process of the elastic plate 53, the sealing cloth connected to the three sides of the elastic plate 53 is pulled to move, so that the traction spring connected to the sealing cloth is stretched, and the solid particles will not enter the elastic groove 51 to hinder the movement of the elastic plate 53. After the auger 55 rotates away from the squeezing button position, the squeezing button pops out under the action of the reset spring, so that the two switch metal sheets of the switch metal sheet group contact each other again, and the circuit supplies power to the energized spring, so that the elastic plate 53 is reset under the traction of the energized spring, and the sealing cloth is reset under the action of the traction spring;

[0045] When the lower end of the sampling tube 3 is inserted into the container containing solid particles and the lower end of the sampling tube 3 is kept horizontal with the bottom of the container, the rotating shaft 54 ​​inside the lower section 41 of the telescopic tube moves upward by extrusion, and during the movement, it contacts the connecting ring sleeve 65 and drives the connecting ring sleeve 65 to slide upward in the movable groove 66. The connecting ring sleeve 65 moves upward and drives the gas delivery baffle 68 to move upward. After the connecting ring sleeve 65 rises to the maximum height, the connecting hole 69 on the gas delivery baffle 68 is aligned with the position of the suction hole 67. The upper end of the gas delivery hole 61 is connected to the outside through the gas delivery pipe 63, so that the suction device can absorb external gas to the position of the lower section 41 of the telescopic tube through the gas delivery pipe 63. The inhaled gas carries the solid particles inside the lower section 41 of the telescopic tube to move upward, thereby achieving the sampling effect.

[0046] When the automatic sampling system transmits a signal to control the hydraulic main tank to retract the sampling tube 3, the data processing module of the automatic sampling system can calculate the retracted length of the sampling tube 3 by the amount of liquid flowing back into the hydraulic main tank, and the circumference of the pulling gear 64 can be calculated according to the radius of the pulling gear 64. The retracted length of the sampling tube 3 is divided by the circumference of the pulling gear 64 to obtain the number of rotations of the pulling gear 64, thereby calculating the rotation angle of the pulling gear 64, and transmitting the data to the stepper motor controller to control the connection of the pulling gear 64. The shaft rotates at a corresponding angle, so that when the sampling tube 3 contracts, the air pipe 63 can be moved outward by the same length driven by the pulling gear 64. The air pipe 63 inside the sampling tube 3 always remains straight, and will not affect the normal transportation of solid particles inside the sampling tube 3 due to looseness. The overflowed air pipe 63 will not be folded or squeezed, and will not affect the air pipe 63 from continuing to transport gas to the inside of the sampling tube 3. When the automatic sampling system transmits a signal to control the hydraulic main box to extend the sampling tube 3, the air pipe 63 moves synchronously into the sampling tube 3.

[0047] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automated sampling system for solid particles, comprising a robot base (1), a sampling robot (2) being rotatably connected to the upper surface of the robot base (1), and a sampling tube (3) being rotatably connected to one end of the sampling robot (2) away from the robot base (1), wherein: The sampling tube (3) is divided into three types: a telescopic tube lower section (41), a telescopic tube middle section (42) and a telescopic tube upper section (43). A connecting plate (59) is connected to the upper inner wall of the telescopic tube lower section (41). A rotating shaft (54) is rotatably connected to the middle position of the upper surface of the connecting plate (59) through a rotating sleeve. An auger (55) is connected to the lower outer wall of the rotating shaft (54). A plurality of evenly distributed limiting rods (58) are connected to the upper surface of the auger (55). A connecting spring (57) is connected to the upper surface of the auger (55) at a position corresponding to the limiting rod (58). The upper end of the limiting rod (58) is connected to a limiting disk (56). The lower end of the rotating shaft (54) is spherical in shape. An elastic groove (51) is provided below the inner wall of the lower section (41) of the telescopic tube, a spring plate (53) is rotatably connected to one side of the lower surface of the elastic groove (51), a connecting cavity (52) is provided on both the upper and lower surfaces of the elastic groove (51), a cavity is provided at a position corresponding to the connecting cavity (52) inside the lower section (41) of the telescopic tube, a sealing cloth is connected to one side of the spring plate (53) close to the connecting cavity (52), a traction spring is connected to the position of the sealing cloth inside the cavity, and an energizing spring is connected to the rear surface of the spring plate (53) inside the elastic groove (51); A telescopic tube middle section (42) is sleeved on the outer wall of the telescopic tube lower section (41), and a telescopic tube upper section (43) is sleeved on the outer wall of the telescopic tube middle section (42). A limiting ring (47) is integrally formed on the upper sides of the outer walls of the telescopic tube lower section (41) and the telescopic tube middle section (42), and a limiting ring (47) is also integrally formed on the lower sides of the inner walls of the telescopic tube middle section (42) and the telescopic tube upper section (43) at a position corresponding to the limiting ring (47). The upper surface of the telescopic tube lower section (41) is provided with a plurality of evenly distributed gas delivery holes (61); a gas delivery pipe (63) is connected to the upper surface of the telescopic tube lower section (41) at a position corresponding to the gas delivery holes (61); a plurality of holes are provided on the outer side of the upper surface of the telescopic tube upper section (43); a sealing ring (62) is connected to the inner wall of the hole; a movable groove (66) is provided inside the telescopic tube lower section (41) corresponding to the upper side of the limit plate (56); and the telescopic tube lower section A blocking groove is provided inside the (41) at a position corresponding to the movable groove (66), a gas delivery baffle (68) is slidably connected inside the blocking groove, an inner wall of the gas delivery baffle (68) is connected to a connecting ring sleeve (65) near the inner side wall of the lower section (41) of the telescopic tube, a connecting hole (69) is provided below the outer side wall of the gas delivery baffle (68), and an air suction hole (67) is provided below the inner side wall of the lower section (41) of the telescopic tube at a position corresponding to the lower end of the gas delivery hole (61).

2. An automated sampling system for solid particles according to claim 1, characterized in that: An elastic cavity is provided on the other side of the inner wall of the lower section (41) of the telescopic tube near the elastic groove (51), a switch metal sheet group is connected inside the elastic cavity, a pressing button is connected to the position of the switch metal sheet group inside the elastic cavity via a return spring, and an insulating plate is connected to one end of the pressing button near the elastic cavity.

3. An automated sampling system for solid particles according to claim 2, characterized in that: The upper part of the inner wall of the lower section (41) of the telescopic tube, the middle section (42) of the telescopic tube and the upper section (43) of the telescopic tube are all connected with a hydraulic box (45); a push rod (46) is slidably connected to the lower part of the hydraulic box (45); the upper surface of the lower section (41) of the telescopic tube and the middle section (42) of the telescopic tube are all connected with a hydraulic pipe (44); the hydraulic boxes (45) connected to the middle section (42) of the telescopic tube and the upper section (43) of the telescopic tube are both provided with grooves corresponding to the lower section (41) of the telescopic tube.

4. The automated sampling system for solid particles according to claim 3, characterized in that: A pulling groove (610) is provided on one side of the outer wall of the gas delivery pipe (63); a pulling gear (64) is rotatably connected to the outer wall of the telescopic tube upper section (43) at a position corresponding to the sealing ring (62); a connecting shaft is connected to the middle position of the outer wall of the pulling gear (64); both ends of the connecting shaft are connected to transmission gears; and a linkage gear is rotatably connected to the outer wall of the telescopic tube upper section (43) at positions corresponding to two adjacent transmission gears.

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