Sampling mechanism

Abstract

The utility model discloses a sampling mechanism which comprises a sampling cylinder, a material collecting bin, a driving device and a lifting device, a feed port is formed in the lower end of the sampling cylinder, and a discharge port is formed in the upper end; the material collecting bin is communicated with a material outlet in the upper end of the sampling cylinder; the sampling part provided by the utility model is used for drilling materials, the materials can be divided at the sampling part, and redundant materials can fall into a vehicle and cannot be scattered on the ground; secondly, since the material can be divided at the sampling part, after sampling is completed at the first sampling point, the first spiral blade and the second spiral blade of the sampling mechanism stop rotating, the material stops rising, and then the sampling mechanism is moved to the second sampling point for sampling; in the moving process, the materials cannot be scattered out due to blocking of the first spiral blade and the second spiral blade, that is, the materials do not need to be lifted to the discharging port before the sampling mechanism moves from the first sampling point to the second sampling point, and therefore continuous sampling can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical sampling, and more specifically to a sampling mechanism. Background Art

[0002] A sampling machine is a device used to obtain a sample from a batch of materials, whose test results can represent the entire batch of sampled materials. There are many types of sampling machines, and different industries and different places use different structural forms of sampling machines. Generally, according to the structural form and the occasion of use, they can be roughly divided into: carriage (car, train) samplers, pipeline samplers, belt samplers (head, middle), etc.; generally used for sampling during the transportation and transfer of bulk materials (such as coal, ore, grain, etc.).

[0003] When the sampler is working, its sampling mechanism needs to be inserted into the bulk materials loaded in the car or train compartment to collect material samples; the sampling drill bit of the existing sampler has the problem that excess materials fall from above during sampling. When the sampled vehicle is loaded with materials at a relatively high level, the materials basically fall to the ground, causing dust problems; in addition, the sampling drill bit of the sampler has the problem of internal leakage, and small-particle powder materials cannot be sampled. Some suppliers crush and mix inferior materials into it, causing serious economic losses to the company. Utility Model Content

[0004] In view of this, the utility model provides a sampling mechanism that overcomes the above technical problems or at least partially solves the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sampling mechanism, comprising a sampling tube, a collecting bin, a driving device and a lifting device;

[0007] The sampling cylinder has a feed port at the lower end and a discharge port at the upper end, and is used to collect and transport samples;

[0008] The material collection bin is in communication with the discharge port at the upper end of the sampling cylinder;

[0009] The driving device is used to drive the sampling tube to collect and transport samples;

[0010] The lifting device is used to drive the sampling tube, the collecting bin and the driving device to move up and down.

[0011] Preferably, it further comprises a rotating shaft, one end of which is connected to the output shaft of the driving device, and the other end of which extends to and passes through the collecting bin and the sampling cylinder.

[0012] Preferably, the sampling cylinder comprises a sampling portion, a connecting portion and a feeding portion which are sequentially connected from bottom to top;

[0013] The lower end of the sampling part is provided with a feed port, and the sampling part comprises a first spiral blade and a first outer tube sleeved on the periphery of the first spiral blade; the first spiral blade is sleeved on the outer surface of the rotating shaft;

[0014] The upper and lower ends of the connecting part are respectively connected to the feeding part and the sampling part;

[0015] The feeding part includes a second spiral blade, an inner tube and a second outer tube; the second spiral blade is sleeved on the outer surface of the rotating shaft, the upper end extends to the inside of the material collection bin, and the lower end extends to the lower end of the connecting part; the inner tube is sleeved on the outer periphery of the second spiral blade, the upper end has a discharge port and is connected to the material collection bin, the lower end extends to the lower end of the connecting part and is connected to the sampling part; the second outer tube is sleeved on the outer periphery of the inner tube, the upper end is connected to the material collection bin, and the lower end is connected to the connecting part.

[0016] Preferably, the connecting portion is a trumpet-shaped structure whose cross section gradually decreases from top to bottom.

[0017] Preferably, the inner diameter of the top end of the first outer tube is larger than the outer diameter of the bottom end of the connecting portion, and a discard port is provided at the top end of the first outer tube.

[0018] Preferably, the first helical blade is a double helical blade, and the second helical blade is a single helical blade.

[0019] Preferably, the spiral diameter of the first spiral blade is greater than the spiral diameter of the second spiral blade.

[0020] Preferably, the lifting device comprises a lifting mechanism frame, a chain mechanism, a lifting trolley and a lifting drive device;

[0021] The lifting mechanism frame is a rectangular parallelepiped structure, in which a slideway is provided;

[0022] The chain mechanism is sleeved on the outer surface of the lifting mechanism frame;

[0023] The lifting trolley is slidably connected in the slideway of the lifting mechanism frame, the two ends of the lifting trolley are connected to the chain mechanism, and one side of the lifting trolley is fixedly connected to the aggregate bin;

[0024] The lifting drive device is connected to the chain mechanism and is used to drive the chain mechanism to rotate along the outer surface of the lifting mechanism frame.

[0025] Preferably, an upper limit block is provided at the upper end of the lifting mechanism frame, and a lower limit block is provided at the lower end.

[0026] It can be seen from the above technical solutions that, compared with the prior art, the utility model discloses a sampling mechanism having the following beneficial effects:

[0027] The sampling part of the sampling mechanism provided by the utility model is used to drill materials, and the first outer tube of the sampling part is provided with a feed port and a discard port, so that the material can be shrunk in the sampling part, and the excess material can fall into the vehicle and will not be spilled on the ground; secondly, since the material can be shrunk in the sampling part, when the sampling is completed at the first sampling point, the first spiral blade and the second spiral blade of the above-mentioned sampling mechanism stop rotating, the material stops rising, and then the above-mentioned sampling mechanism is moved to the second sampling point for sampling. During the movement, the material will not be spilled due to the obstruction of the first spiral blade and the second spiral blade, that is, before the above-mentioned sampling mechanism is moved from the first sampling point to the second sampling point, it is not necessary to lift the material to the discharge port, so continuous sampling can be achieved.

[0028] The utility model provides a discard port at the top of the first outer tube, the inner diameter of the top of the first outer tube is larger than the outer diameter of the bottom of the connecting part, and the discard port is located on the outside of the bottom of the connecting part, so that the material can be discharged from the above-mentioned discard port to achieve the reduction of the material; the connecting part is designed to have a trumpet-shaped structure with a cross-section gradually decreasing from top to bottom, so as to better achieve a closed connection between the sampling part and the feeding part, and avoid internal leakage of the sampling drill bit and the situation where excess material falls from above during sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0030] Figure 1 The accompanying drawing is a schematic diagram of the overall structure of the utility model;

[0031] Figure 2 The accompanying drawing is a schematic diagram of the sampling unit structure of the utility model;

[0032] in,

[0033] 1. Sampling cylinder; 2. Collecting bin; 3. Driving device; 4. Lifting device; 5. Rotating shaft; 6. Sampling part; 7. Connecting part; 8. Feeding part; 9. First spiral blade; 10. First outer tube; 11. Second spiral blade; 12. Inner tube; 13. Second outer tube; 14. Lifting mechanism frame; 15. Chain mechanism; 16. Lifting trolley; 17. Lifting driving device; 18. Upper limit block; 19. Lower limit block. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] See also Figure 1-2 The embodiment of the utility model discloses a sampling mechanism, including a sampling tube 1, a collecting bin 2, a driving device 3 and a lifting device 4;

[0036] The lower end of the sampling tube 1 is provided with a feed port, and the upper end is provided with a discharge port. The sampling tube 1 is used to collect and transport samples;

[0037] The material collection bin 2 is connected to the discharge port at the upper end of the sampling tube 1;

[0038] The driving device 3 is used to drive the sampling tube 1 to collect and transport the sample;

[0039] The lifting device 4 is used to drive the sampling tube 1, the collecting bin 2 and the driving device 3 to move up and down.

[0040] In order to further optimize the above technical solution, a rotating shaft 5 is also included, one end of which is connected to the output shaft of the driving device 3, and the other end extends and passes through the collecting bin 2 and the sampling tube 1. In this embodiment, the driving device 3 adopts an electric motor, which drives the rotating shaft 5 to rotate, thereby driving the first spiral blade 9 and the second spiral blade 11 to rotate, and the electric motor can well control the rotation speed of the first spiral blade 9 and the second spiral blade 11 by adjusting the power; this is an existing conventional structure and will not be repeated here.

[0041] In order to further optimize the above technical solution, the sampling tube 1 includes a sampling portion 6, a connecting portion 7 and a feeding portion 8 which are sequentially connected from bottom to top;

[0042] A feed port is provided at the lower end of the sampling part 6, and the sampling part 6 comprises a first spiral blade 9 and a first outer tube 10 sleeved on the outer periphery of the first spiral blade 9; the first spiral blade 9 is sleeved on the outer surface of the rotating shaft 5;

[0043] The upper and lower ends of the connecting portion 7 are respectively connected to the feeding portion 8 and the sampling portion 6;

[0044] The feeding part 8 includes a second spiral blade 11, an inner tube 12 and a second outer tube 13; the second spiral blade 11 is sleeved on the outer surface of the rotating shaft 5, the upper end extends to the inside of the collecting bin 2, and the lower end extends to the lower end of the inside of the connecting part 7; the inner tube 12 is sleeved on the outer periphery of the second spiral blade 11, the upper end has a discharge port, and is connected with the collecting bin 2, the lower end extends to the lower end of the inside of the connecting part 7, and is connected with the sampling part 6; the second outer tube 13 is sleeved on the outer periphery of the inner tube 12, the upper end is connected to the collecting bin 2, and the lower end is connected to the connecting part 7.

[0045] In order to further optimize the above technical solution, the connecting part 7 is a trumpet-shaped structure with a cross section that gradually decreases from top to bottom. In this embodiment, the lower end of the inner tube 12 extends to the lower end of the inner part of the connecting part 7, the outer wall of the inner tube 12 fits with the inner wall of the bottom end of the connecting part 7, and the inner tube 12 is directly connected to the first outer tube 10 to realize the transmission and contraction of materials; the first outer tube 10, the inner tube 12 and the second outer tube 13 are all cylindrical; the cylindrical first outer tube 10, the inner tube 12 and the second outer tube 13 are easy to manufacture, and the inner wall is smooth, which is conducive to the rise of materials, and there is no dead angle to avoid material residue.

[0046] In order to further optimize the above technical solution, the inner diameter of the top end of the first outer tube 10 is larger than the outer diameter of the bottom end of the connecting portion 7 , and a discard port is provided at the top end of the first outer tube 10 .

[0047] In order to further optimize the above technical solution, the first spiral blade 9 is a double spiral blade, and the second spiral blade 11 is a single spiral blade. In this embodiment, the double spiral blade has a better effect of drilling materials, a greater drilling force, a greater upward force to drive the material to move, and can generate a greater shear force at the upper edge of the first outer tube 10 and the lower edge of the connecting portion 7, and has a better effect of crushing large particles of material; the single spiral blade has a smaller resistance, so it has a better effect of lifting materials.

[0048] In order to further optimize the above technical solution, the spiral diameter of the first spiral blade 9 is greater than the spiral diameter of the second spiral blade 11. The spiral diameter of the first spiral blade 9 is greater than the spiral diameter of the second spiral blade 11, and the shear force is stronger, achieving a better crushing effect.

[0049] In order to further optimize the above technical solution, the lifting device 4 includes a lifting mechanism frame 14, a chain mechanism 15, a lifting trolley 16 and a lifting drive device 17;

[0050] The lifting mechanism frame 14 is a rectangular parallelepiped structure, in which a slideway is provided;

[0051] The chain mechanism 15 is sleeved on the outer surface of the lifting mechanism frame 14;

[0052] The lifting trolley 16 is slidably connected in the slideway of the lifting mechanism frame 14, the two ends of the lifting trolley 16 are connected to the chain mechanism 15, and one side of the lifting trolley 16 is fixedly connected to the aggregate bin 2;

[0053] The lifting drive device 17 is connected to the chain mechanism 15 and is used to drive the chain mechanism 15 to rotate along the outer surface of the lifting mechanism frame 14 .

[0054] In order to further optimize the above technical solution, an upper limit block 18 is provided at the upper end of the lifting mechanism frame 14, and a lower limit block 19 is provided at the lower end. In the present embodiment, the lifting mechanism frame 14 is a rectangular structure, which is vertically set up on the side of the material collecting mechanism. A slideway is provided at the center of the lifting mechanism frame 14, and the lifting trolley 16 slides up and down in the slideway; the chain mechanism 15 is an existing conventional transmission chain, which is wrapped around the lifting mechanism frame 14 for one circle, and the two ends of the chain mechanism 15 are respectively connected to the two ends of the lifting trolley 16. The movement of the chain mechanism 15 drives the lifting trolley 16 to move up and down; the side of the lifting trolley 16 is connected to the aggregate bin 2, and the lifting trolley 16 moves up and down, thereby driving the aggregate bin 2 and the sampling tube 1 to move up and down, so that the sampling mechanism can be inserted into the bulk material to collect samples; the lifting drive device 17 is a forward and reverse motor, which is connected to the chain mechanism 15, and drives the chain mechanism 15 to move along the outer surface of the lifting mechanism frame 14. This is an existing conventional technology and will not be repeated here; an upper limit block 18 is provided at the upper end of the lifting mechanism frame 14, and a lower limit block 19 is provided at the lower end; the distance of the up and down movement is guaranteed, and the safety is improved.

[0055] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0056] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sampling mechanism, characterized in that: Including sampling tube, collecting bin, driving device and lifting device; The sampling cylinder has a feed port at the lower end and a discharge port at the upper end, and is used to collect and transport samples; The material collection bin is in communication with the discharge port at the upper end of the sampling cylinder; The driving device is used to drive the sampling tube to collect and transport samples; The lifting device is used to drive the sampling tube, the collecting bin and the driving device to move up and down.

2. A sampling mechanism according to claim 1, characterized in that: It also includes a rotating shaft, one end of which is connected to the output shaft of the driving device, and the other end of which extends to and passes through the collecting bin and the sampling cylinder.

3. A sampling mechanism according to claim 2, characterized in that: The sampling cylinder comprises a sampling part, a connecting part and a feeding part which are connected in sequence from bottom to top; The lower end of the sampling part is provided with a feed port, and the sampling part comprises a first spiral blade and a first outer tube sleeved on the periphery of the first spiral blade; the first spiral blade is sleeved on the outer surface of the rotating shaft; The upper and lower ends of the connecting part are respectively connected to the feeding part and the sampling part; The feeding part includes a second spiral blade, an inner tube and a second outer tube; the second spiral blade is sleeved on the outer surface of the rotating shaft, the upper end extends to the inside of the material collection bin, and the lower end extends to the lower end of the connecting part; the inner tube is sleeved on the outer periphery of the second spiral blade, the upper end has a discharge port and is connected to the material collection bin, the lower end extends to the lower end of the connecting part and is connected to the sampling part; the second outer tube is sleeved on the outer periphery of the inner tube, the upper end is connected to the material collection bin, and the lower end is connected to the connecting part.

4. A sampling mechanism according to claim 3, characterized in that: The connecting portion is a trumpet-shaped structure with a cross section gradually decreasing from top to bottom.

5. A sampling mechanism according to claim 3, characterized in that: The inner diameter of the top end of the first outer tube is greater than the outer diameter of the bottom end of the connecting portion, and a discard port is provided at the top end of the first outer tube.

6. A sampling mechanism according to claim 3, characterized in that: The first helical blade is a double helical blade, and the second helical blade is a single helical blade.

7. A sampling mechanism according to claim 3, characterized in that: A spiral diameter of the first spiral blade is greater than a spiral diameter of the second spiral blade.

8. A sampling mechanism according to claim 1, characterized in that: The lifting device comprises a lifting mechanism frame, a chain mechanism, a lifting trolley and a lifting drive device; The lifting mechanism frame is a rectangular parallelepiped structure, in which a slideway is provided; The chain mechanism is sleeved on the outer surface of the lifting mechanism frame; The lifting trolley is slidably connected in the slideway of the lifting mechanism frame, the two ends of the lifting trolley are connected to the chain mechanism, and one side of the lifting trolley is fixedly connected to the aggregate bin; The lifting drive device is connected to the chain mechanism and is used to drive the chain mechanism to rotate along the outer surface of the lifting mechanism frame.

9. A sampling mechanism according to claim 8, characterized in that: An upper limit block is arranged at the upper end of the lifting mechanism frame, and a lower limit block is arranged at the lower end.

Images