A sampling device for feed sampling

Abstract

The present invention relates to the technical field of sampling devices, and specifically to a sampling device for feed sampling. It comprises a grip frame, a sampling barrel is fixedly installed on the inner wall of the grip frame, an outer rotating sleeve is rotatably connected to the axis position of the sampling barrel, the inner wall of the outer rotating sleeve is rotatably connected to a rotating shaft, the bottom end of the sampling barrel is rotatably connected to an inner rotating barrel, the peripheral side of the rotating shaft is fixedly connected to the inner rotating barrel, a spiral lifting module is arranged on the inner side of the inner rotating barrel, an outer spacer is rotatably connected to the peripheral side of the inner rotating barrel, an outer through hole is fixedly provided at the inner lower part of the outer spacer, a stirring barrel is rotatably connected to the peripheral side of the outer spacer, and a group of stirring members distributed in a circular array are fixedly installed on the bottom surface of the stirring barrel. The beneficial effects of the present invention are: when the present invention is working, on the one hand, it can realize variable depth quantitative sampling and multi-station sampling and storage of the sampling device, and on the other hand, it can also realize online multi-item detection of sampled feed when sampling feed.

Description

Technical Field

[0001] The invention relates to the technical field of sampling devices, in particular to a sampling device for feed sampling. Background Art

[0002] In order to ensure the quality of feed, it is necessary to test the feed regularly. In the prior art, the patent document with publication number CN117309482A discloses a feed sampling device and a sampling method. The feed sampling device is connected to the material hopper of the closed silo, and includes a sampling tube, a sampling bottle, a telescopic rod, a movable scraper and a control system. One end of the sampling tube is connected to the side of the material hopper, and the other end is closed by the bottom plate. The sampling bottle is connected to the side of the sampling tube, and an electric sliding cover is provided at the interface. The telescopic rod is arranged inside the sampling tube, and the front end of the telescopic rod extends into the material hopper, and the end is connected to the bottom plate. The movable scraper is slidably connected to the inner wall of the sampling tube, and is used to scrape the material entering the sampling tube to the sampling bottle. The above sampling device can greatly improve the sampling efficiency and detection accuracy of the detection personnel, thereby improving the overall yield of feed processing, improving the economic benefits of the enterprise, and has broad application prospects.

[0003] However, when the above-mentioned sampling device is working, on the one hand, it is not convenient to realize variable-depth quantitative sampling and multi-station sampling and sample storage of the sampling device; on the other hand, it is not convenient to realize online multi-item detection of sampled feed during sampling. Based on this, the present invention provides a sampling device for feed random inspection to solve the problems raised in the above-mentioned background technology. Summary of the invention

[0004] The present invention aims at the technical problems existing in the prior art and provides a sampling device for feed spot inspection to solve the problem that the existing sampling device is not convenient for realizing variable depth quantitative sampling and multi-station sampling and sample storage when working, and is not convenient for realizing online multi-item detection of sampled feed when sampling.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: a sampling device for feed sampling, comprising a grip frame, a sampling barrel is fixedly installed on the inner wall of the grip frame, the axial position of the sampling barrel is rotatably connected to an outer rotating sleeve, the inner wall of the outer rotating sleeve is rotatably connected to a rotating shaft, the bottom end of the sampling barrel is rotatably connected to an inner rotating barrel, the peripheral side surface of the rotating shaft is fixedly connected to the inner rotating barrel, a spiral feeding module is arranged on the inner side of the inner rotating barrel, the peripheral side surface of the inner rotating barrel is rotatably connected to an outer spacer, an outer through hole is fixedly provided at the inner lower part of the outer spacer, and the peripheral side surface of the outer spacer is rotatably connected to a stirring The mixing drum comprises a mixing element, the bottom surface of which is fixedly mounted with a group of stirring elements distributed in a circular array, the surface of the gripping frame is respectively fixedly mounted with a dual-axis motor, a first motor and a second motor, the two output shaft ends of the dual-axis motor are respectively transmission-connected with an external rotating sleeve and the mixing drum, the output shaft end of the first motor is transmission-connected with a rotating shaft via a first chain belt, the external rotation of the mixing drum is connected with a transfer ring driven by the second motor, the interior of the transfer ring is respectively fixedly mounted with a detection mechanism and a group of sample storage modules distributed in a circular array, and the surface of the gripping frame is mounted with a detection drive mechanism cooperating with the detection mechanism.

[0006] The beneficial effects of the present invention are:

[0007] 1) When the present invention is working, on the one hand, it can realize variable depth quantitative sampling and multi-station sampling and sample storage of the sampling device, and on the other hand, it can also realize online multi-item detection of the sampled feed during feed sampling.

[0008] 2) In the present invention, when it is necessary to sample the feed, the user presses the outer spacer and the inner rotating cylinder through the handle, and finally, the inner through hole penetrates into the specified depth of the feed. During the sampling operation, the outer rotating sleeve drives the spiral lifting piece to rotate at a set speed. After the spiral lifting piece rotates, it then lifts the feed in the direction of the sample discharge tube. The feed lifted by the spiral lifting piece is finally discharged through the sample discharge tube. By setting the pressure sensor, quantitative sampling of feed at a specified depth can be achieved.

[0009] 3) When the present invention takes samples, the stirring drum rotates at a set speed, and after the stirring drum rotates, it drives the horizontal stirring rod and the vertical stirring rod to revolve. After the horizontal stirring rod and the vertical stirring rod revolve, the flow rate of the feed to be tested is improved. By improving the flow rate of the feed to be tested, the efficiency of the feed to be tested entering the inner rotating drum is improved, and the revolve motion setting of the horizontal stirring rod and the vertical stirring rod can effectively reduce the blockage rate of the feed to be tested on the outside of the inner through hole and the outer through hole.

[0010] 4) In the present invention, when the detection operation is carried out, first, a vacant sample storage cylinder is rotated to the bottom of the sample arrangement tube and is coaxially connected with the sample arrangement tube. When the quantitative sampling inside the sample storage cylinder is completed, the sample storage cylinder with the quantitative feed is rotated to the bottom of the inspection column. Then, under the driving action of the lifting push rod, the temperature and humidity probe, the camera and the moisture meter penetrate into the interior of the feed to be inspected, and then various detection operations are performed on the feed in the sample storage cylinder. After the detection is completed, and when the feed sample stored in the sample storage cylinder needs to be quickly discharged, the sample storage cylinder containing the feed can move to a coaxial position with the pressure column. Then, the pressure column applies quantitative pressure to the elastic pressure rod, and a gap is generated between the sealing seat and the sample storage cylinder. The feed in the sample storage cylinder can then be quickly emptied, and then the online detection operation of the next feed sampling sample can be carried out.

[0011] Based on the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, two symmetrically arranged handles are fixedly mounted on the top surface of the grip, an electric control box is fixedly mounted on the surface of the grip, a single-chip microcomputer is fixedly mounted on the end surface of the electric control box, a battery electrically connected to the single-chip microcomputer is built into the electric control box, and a port of the battery is electrically connected to the single-chip microcomputer.

[0013] The beneficial effect of adopting the above further solution is that, when in use, the single chip microcomputer is used to control the working state of the sampling device in real time, and the storage battery is used to supply power to the power using mechanism in the sampling device;

[0014] The battery is a rechargeable battery.

[0015] Furthermore, the spiral lifting modules respectively include inner through holes opened on the inner side of the inner rotating cylinder and matched with the outer through holes. The upper part of the sampling cylinder is fixedly connected with a sample discharge tube, and the discharge port of the sample discharge tube is vertically arranged downward. The bottom end of the sample discharge tube is slidingly fitted with a transfer ring, and a flow meter electrically connected to the single-chip computer is built into the interior of the sample discharge tube. A spiral lifting plate is fixedly installed on the circumferential side of the outer rotating sleeve, and the circumferential side of the spiral lifting plate is respectively fitted with the inner rotating cylinder and the sampling cylinder.

[0016] The beneficial effect of adopting the above further scheme is that when it is necessary to perform feed sampling operations, the user presses the outer partition cylinder and the inner rotating cylinder through the handle, and finally, the inner through hole penetrates into the specified depth of the feed. During the sampling operation, the outer rotating sleeve drives the spiral lifting piece to rotate at a set speed. After the spiral lifting piece rotates, it then lifts the feed in the direction of the sample discharge tube, and the feed lifted by the spiral lifting piece is finally discharged through the sample discharge tube.

[0017] Furthermore, a guide cone head is fixedly installed at the bottom end of the outer spacer, and the inner through hole and the outer through hole are both inclined in a direction close to the outer rotating sleeve, and the angles between the axes of the inner through hole and the outer through hole and the horizontal plane are both 25°.

[0018] The beneficial effect of adopting the above further scheme is that when in use, the outer spacer can quickly penetrate into the feed through the setting of the guide cone head, and the external feed can quickly flow into the interior of the inner rotating cylinder and the lifting area of ​​the spiral lifting plate through the angle setting of the inner and outer holes.

[0019] Furthermore, the stirring element includes a vertical stirring rod arranged vertically, the top end of the vertical stirring rod is fixedly connected to the stirring cylinder, and a group of horizontal stirring rods distributed in a linear array are fixedly installed on the peripheral side of the vertical stirring rod, the axis of the vertical stirring rod is parallel to the axis of the outer partition cylinder, and the axis of the horizontal stirring rod is perpendicular to the axis of the vertical stirring rod.

[0020] The beneficial effect of adopting the above-mentioned further scheme is that when sampling, the stirring drum rotates at a set speed, and after the stirring drum rotates, it drives the horizontal stirring rod and the vertical stirring rod to revolve, and after the horizontal stirring rod and the vertical stirring rod revolve, the flow rate of the feed to be inspected is improved. By improving the flow rate of the feed to be inspected, the efficiency of the feed to be inspected entering the inner rotating drum is improved, and by setting the revolute motion of the horizontal stirring rod and the vertical stirring rod, the blockage rate of the feed to be inspected on the outside of the inner through hole and the outer through hole can be effectively reduced.

[0021] Furthermore, the sample storage module includes a positioning cylinder, the peripheral side surface of the positioning cylinder is slidably connected to the indexing ring, a group of pressure sensors are installed between the relative surfaces of the positioning cylinder and the indexing ring, the port of the pressure sensor is electrically connected to the single-chip computer, the inner wall of the positioning cylinder is threadedly connected to the sample storage cylinder, the bottom end of the sample storage cylinder is fixedly installed with a bracket, the inner wall of the bracket is slidably connected with an elastic pressure rod, the peripheral side surface of the elastic pressure rod is fixedly installed with a sealing seat cooperating with the sample storage cylinder, and the peripheral side surface of the elastic pressure rod and the position corresponding to the sealing seat and the bracket are provided with a compression-resistant spring.

[0022] Furthermore, the bottom end of the sample storage tube is open, and the top surface of the sealing seat is fixedly provided with a guide cone surface that cooperates with the sample storage tube.

[0023] The beneficial effect of adopting the above further scheme is that during normal use, the elastic pressure rod is in a non-stressed state, and the sealing seat seals the bottom end of the sample storage tube under the action of the compression spring. During the sample storage operation, the pressure sensor is set to achieve quantitative sampling of feed at a specified depth.

[0024] Furthermore, the detection drive mechanism includes a lifting frame slidably connected to the grip frame, a vertically arranged lifting push rod is fixedly installed between the relative surfaces of the lifting frame and the grip frame, a pressure column and a detection column are symmetrically installed inside the lifting frame, a temperature and humidity probe, a camera and a moisture meter are respectively fixedly installed inside the detection column, and the data ports of the temperature and humidity probe, the camera and the moisture meter are electrically connected to the single-chip computer.

[0025] The beneficial effect of adopting the above further solution is that, when in use, the feed stored in the sample storage tube can be quickly tested by setting up the temperature and humidity probe, the camera and the moisture meter;

[0026] During the inspection, first, an empty sample storage cylinder rotates to the right below the sample arrangement tube and is coaxially connected with the sample arrangement tube. After the quantitative sampling inside the sample storage cylinder is completed, the sample storage cylinder with quantitative feed rotates to the right below the inspection column. Then, driven by the lifting push rod, the temperature and humidity probe, camera and moisture meter penetrate into the feed to be inspected, and then various inspection operations are performed on the feed in the sample storage cylinder.

[0027] After the test is completed and the feed sample stored in the sample storage cylinder needs to be discharged quickly, the sample storage cylinder containing the feed can move to a coaxial position with the pressure column. Then, the pressure column applies quantitative pressure to the elastic pressure rod, and a gap is generated between the sealing seat and the sample storage cylinder. The feed in the sample storage cylinder can then be quickly emptied, and then the online test operation of the next feed sampling sample can be carried out.

[0028] Furthermore, the detection mechanism includes a protective tube, a negative pressure tube, a brush tube and a through pipe which are fixedly connected to the transfer ring. The interior of the negative pressure tube is equipped with a negative pressure fan and a ventilation mesh plate from top to bottom. The interior of the brush tube is fixedly provided with a cotton brush ring. The interior of the brush tube is equipped with a group of electric heating rods distributed in a circular array and cooperating with the cotton brush ring.

[0029] The beneficial effect of adopting the above further solution is that when the device is not in use, the protective tube and the inspection column are coaxially arranged, and the inspection column fits the protective tube, and the protective tube isolates and protects the temperature and humidity probe, the camera and the moisture meter;

[0030] After each test, the negative pressure cylinder and brush cylinder take turns to clean and maintain the temperature and humidity probe, camera and moisture meter;

[0031] During cleaning and maintenance operations, first, the temperature and humidity probe, camera, and moisture meter are all inserted into the negative pressure cylinder, and negative pressure is generated in the negative pressure cylinder, and then negative pressure dust removal and cleaning of the temperature and humidity probe, camera, and moisture meter are achieved;

[0032] Then, the temperature and humidity probe, camera and moisture meter go deep into the cotton brush circle to achieve physical cleaning of the temperature and humidity probe, camera and moisture meter;

[0033] During sampling, when it is necessary to discharge the residual feed in the inner rotating cylinder or to discharge the feed in the inner rotating cylinder directly, the through pipe is connected to the sample discharge pipe, and then the feed in the inner rotating cylinder is directly discharged or quickly guided out. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the overall structure of a sampling device for feed sampling of the present invention;

[0035] Figure 2 It is a schematic diagram of the structure of the sample storage tube and the handle of the present invention;

[0036] Figure 3 For the present invention Figure 1 A schematic cross-sectional structure diagram of ;

[0037] Figure 4 For the present invention Figure 3 A schematic diagram of the local enlarged structure at point A in the middle;

[0038] Figure 5 For the present invention Figure 3 A schematic diagram of the local enlarged structure at B in the middle;

[0039] Figure 6 For the present invention Figure 3 A schematic diagram of the local enlarged structure at C in the middle;

[0040] Figure 7 It is a structural schematic diagram of the lifting frame and the lifting push rod of the present invention;

[0041] Figure 8 It is a schematic diagram of the structure of the temperature and humidity probe and the lifting frame of the present invention;

[0042] Fig. 9 It is a structural schematic diagram of the casing and the through pipe of the present invention;

[0043] Fig.10 It is a schematic diagram of the explosion structure of the elastic pressure rod and the sample storage tube of the present invention;

[0044] Fig.11 It is a schematic diagram of the structure of the pressure sensor and the sealing seat of the present invention.

[0045] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0046] 1. Grip; 2. Sampling tube; 3. External rotating sleeve; 4. Rotating shaft; 5. Internal rotating tube; 6. External spacer; 7. External through hole; 8. Stirring tube; 9. Stirring element; 10. Double-axis motor; 11. First motor; 12. Second motor; 13. Rotating ring; 14. Internal through hole; 15. Sample tube; 16. Single chip microcomputer; 17. Flow meter; 18. Spiral lifting piece; 19. Positioning tube; 20. Pressure sensor; 21. Sample tube; 22. Bracket; 23. Elastic pressure rod; 24. Sealing seat; 25. Compression spring; 26. Lifting frame; 27. Lifting push rod; 28. Pressure column; 29. ​​Temperature and humidity probe; 30. Camera; 31. Moisture meter; 32. Casing; 33. Negative pressure tube; 34. Brush tube; 35. Through pipe; 36. Handle. DETAILED DESCRIPTION

[0047] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0048] The present invention provides the following preferred embodiments

[0049] like Figure 1-11 As shown, a sampling device for feed sampling includes a grip frame 1;

[0050] Two symmetrically arranged handles 36 are fixedly mounted on the top surface of the grip 1, an electric control box is fixedly mounted on the surface of the grip 1, a single-chip microcomputer 16 is fixedly mounted on the end surface of the electric control box, a battery electrically connected to the single-chip microcomputer 16 is built into the electric control box, and a port of the battery is electrically connected to the single-chip microcomputer 16.

[0051] When in use, the single chip microcomputer 16 is used to control the working state of the sampling device in real time, and the storage battery is used to supply power to the power using mechanism in the sampling device;

[0052] The battery is a rechargeable battery.

[0053] The inner wall of the grip frame 1 is fixedly mounted with a sampling barrel 2, the axis position of the sampling barrel 2 is rotatably connected with an outer rotating sleeve 3, the inner wall of the outer rotating sleeve 3 is rotatably connected with a rotating shaft 4, the bottom end of the sampling barrel 2 is rotatably connected with an inner rotating barrel 5, and the peripheral side surface of the rotating shaft 4 is fixedly connected with the inner rotating barrel 5;

[0054] The circumferential side surface of the inner rotating cylinder 5 is rotatably connected to the outer spacer 6, and an outer through hole 7 is fixedly formed at the inner lower part of the outer spacer 6;

[0055] A guide cone is fixedly mounted on the bottom end of the outer spacer 6;

[0056] When in use, the guide cone head is arranged so that the outer spacer 6 can quickly penetrate into the feed;

[0057] A spiral material lifting module is arranged on the inner side of the inner rotating cylinder 5;

[0058] The spiral lifting modules respectively include inner through holes 14 opened on the inner side of the inner rotating cylinder 5 and matched with the outer through holes 7;

[0059] The inner through hole 14 and the outer through hole 7 are both inclined in a direction close to the outer rotating sleeve 3, and the angles between the axes of the inner through hole 14 and the outer through hole 7 and the horizontal plane are both 25°;

[0060] By setting the angles of the inner through hole 14 and the outer through hole 7, the external feed can quickly flow into the interior of the inner rotating cylinder 5 and the lifting area of ​​the spiral lifting piece 18;

[0061] The upper part of the sampling tube 2 is fixedly connected to a sample discharge tube 15, the discharge port of the sample discharge tube 15 is arranged vertically downward, the bottom end of the sample discharge tube 15 is slidingly fitted with the transfer ring 13, the interior of the sample discharge tube 15 is equipped with a flow meter 17 electrically connected to the single-chip computer 16, and a spiral lifting piece 18 is fixedly installed on the circumferential side of the outer rotating sleeve 3, and the circumferential side of the spiral lifting piece 18 is respectively fitted with the inner rotating tube 5 and the sampling tube 2.

[0062] When it is necessary to sample the feed, the user presses the outer spacer 6 and the inner rotating cylinder 5 through the handle 36. Finally, the inner through hole 14 penetrates into the specified depth of the feed. During the sampling operation, the outer rotating sleeve 3 drives the spiral lifting piece 18 to rotate at a set speed. After the spiral lifting piece 18 rotates, it then lifts the feed in the direction of the sample discharge tube 15. The feed lifted by the spiral lifting piece 18 is finally discharged through the sample discharge tube 15.

[0063] The outer partition cylinder 6 is rotatably connected to a stirring cylinder 8 on its circumferential side surface, and a group of stirring elements 9 distributed in a circumferential array are fixedly mounted on the bottom surface of the stirring cylinder 8;

[0064] The stirring member 9 includes a vertical stirring rod arranged vertically, the top end of which is fixedly connected to the stirring cylinder 8, and a group of horizontal stirring rods distributed in a linear array are fixedly installed on the peripheral side of the vertical stirring rod. The axis of the vertical stirring rod is parallel to the axis of the outer partition cylinder 6, and the axis of the horizontal stirring rod is perpendicular to the axis of the vertical stirring rod.

[0065] During sampling, the stirring drum 8 rotates at a set speed. After the stirring drum 8 rotates, it drives the horizontal stirring rod and the vertical stirring rod to revolve. After the horizontal stirring rod and the vertical stirring rod revolve, the flow rate of the feed to be tested is increased. By increasing the flow rate of the feed to be tested, the efficiency of the feed to be tested entering the inner rotating drum 5 is improved. In addition, by setting the revolving motion of the horizontal stirring rod and the vertical stirring rod, the blockage rate of the feed to be tested on the outside of the inner through hole 14 and the outer through hole 7 can be effectively reduced.

[0066] A dual-axis motor 10, a first motor 11 and a second motor 12 are fixedly mounted on the surface of the gripping frame 1, and the two output shaft ends of the dual-axis motor 10 are respectively connected to the external rotating sleeve 3 and the mixing drum 8, and the output shaft end of the first motor 11 is connected to the rotating shaft 4 through a first chain belt. The external rotation of the mixing drum 8 is connected to a transfer ring 13 driven by the second motor 12, and a detection mechanism and a group of sample storage modules distributed in a circular array are fixedly mounted inside the transfer ring 13, and a detection drive mechanism cooperating with the detection mechanism is installed on the surface of the gripping frame 1.

[0067] The sample storage module includes a positioning cylinder 19, the peripheral side surface of the positioning cylinder 19 is slidably connected to the transfer ring 13, a group of pressure sensors 20 are installed between the relative surfaces of the positioning cylinder 19 and the transfer ring 13, the port of the pressure sensor 20 is electrically connected to the single-chip computer 16, the inner wall of the positioning cylinder 19 is threadedly connected to the sample storage cylinder 21, the bottom end of the sample storage cylinder 21 is fixedly installed with a bracket 22, the inner wall of the bracket 22 is slidably connected with an elastic pressure rod 23, the peripheral side surface of the elastic pressure rod 23 is fixedly installed with a sealing seat 24 that cooperates with the sample storage cylinder 21, and a compression spring 25 is sleeved on the peripheral side surface of the elastic pressure rod 23 and corresponding to the position between the sealing seat 24 and the bracket 22.

[0068] The bottom end of the sample storage tube 21 is open, and the top surface of the sealing seat 24 is fixedly provided with a guide cone surface that matches the sample storage tube 21 .

[0069] During normal use, the elastic pressure rod 23 is in a non-stressed state, and the sealing seat 24 seals the bottom end of the sample storage tube 21 under the action of the compression spring 25. During the sample storage operation, the pressure sensor 20 is set to achieve quantitative sampling of feed at a specified depth.

[0070] The detection drive mechanism includes a lifting frame 26 which is slidably connected to the grip frame 1, a vertically arranged lifting push rod 27 is fixedly installed between the lifting frame 26 and the relative surface of the grip frame 1, a pressure column 28 and a detection column are symmetrically installed inside the lifting frame 26, and a temperature and humidity probe 29, a camera 30 and a moisture meter 31 are fixedly installed inside the detection column respectively, and the data ports of the temperature and humidity probe 29, the camera 30 and the moisture meter 31 are all electrically connected to the single-chip computer 16.

[0071] When in use, the feed stored in the sample storage tube 21 can be quickly tested by setting the temperature and humidity probe 29, the camera 30 and the moisture meter 31;

[0072] When the inspection operation is carried out, first, an empty sample storage cylinder 21 rotates to the right below the sample arrangement tube 15 and is coaxially connected with the sample arrangement tube 15. When the quantitative sampling inside the sample storage cylinder 21 is completed, the sample storage cylinder 21 with the quantitative feed rotates to the right below the inspection column. Then, under the driving action of the lifting push rod 27, the temperature and humidity probe 29, the camera 30 and the moisture meter 31 penetrate into the interior of the feed to be inspected, and then various inspection operations are carried out on the feed in the sample storage cylinder 21.

[0073] After the test is completed and the feed sample stored in the sample storage tube 21 needs to be quickly discharged, the sample storage tube 21 containing the feed can be moved to a coaxial position with the pressure column 28. Then, the pressure column 28 applies quantitative pressure to the elastic pressure rod 23, and a gap is generated between the sealing seat 24 and the sample storage tube 21. The feed in the sample storage tube 21 can then be quickly emptied.

[0074] The detection mechanism includes a protective tube 32, a negative pressure tube 33, a brush tube 34 and a through pipe 35 which are fixedly connected to the transfer ring 13. The interior of the negative pressure tube 33 is equipped with a negative pressure fan and a ventilation mesh plate from top to bottom. The interior of the brush tube 34 is fixedly provided with a cotton brush ring. The interior of the brush tube 34 is equipped with a group of electric heating rods distributed in a circular array and coordinated with the cotton brush ring.

[0075] When the device is not in use, the protective tube 32 is coaxially arranged with the inspection column, and the inspection column fits with the protective tube 32, and the protective tube 32 isolates and protects the temperature and humidity probe 29, the camera 30 and the moisture meter 31;

[0076] After each test, the negative pressure cylinder 33 and the brush cylinder 34 perform cleaning and maintenance on the temperature and humidity probe 29, the camera 30 and the moisture meter 31 in turn;

[0077] During the cleaning and maintenance operation, first, the temperature and humidity probe 29, the camera 30 and the moisture meter 31 are all inserted into the negative pressure cylinder 33, and negative pressure is generated in the negative pressure cylinder 33, and then negative pressure dust removal and cleaning of the temperature and humidity probe 29, the camera 30 and the moisture meter 31 are achieved;

[0078] Then, the temperature and humidity probe 29, the camera 30 and the moisture meter 31 go deep into the cotton brush circle, and then the temperature and humidity probe 29, the camera 30 and the moisture meter 31 are physically cleaned;

[0079] During sampling, when it is necessary to discharge the residual feed in the inner rotating cylinder 5 or to discharge the feed in the inner rotating cylinder 5 directly, the through pipe 35 is connected to the sample discharge pipe 15, and then the feed in the inner rotating cylinder 5 is directly discharged or quickly guided out.

[0080] The above description is only a preferred embodiment of the present invention and does not limit the protection scope of the present invention.

Claims

1. A sampling device for random inspection of feed, comprising a grip frame (1), characterized in that: A sampling cylinder (2) is fixedly mounted on the inner wall of the grip frame (1); an outer rotating sleeve (3) is rotatably connected to the axis of the sampling cylinder (2); a rotating shaft (4) is rotatably connected to the inner wall of the outer rotating sleeve (3); an inner rotating cylinder (5) is rotatably connected to the bottom end of the sampling cylinder (2); a peripheral side surface of the rotating shaft (4) is fixedly connected to the inner rotating cylinder (5); and a spiral material lifting module is arranged on the inner side of the inner rotating cylinder (5); Two symmetrically arranged handles (36) are fixedly mounted on the top surface of the grip frame (1), an electric control box is fixedly mounted on the surface of the grip frame (1), and a single-chip computer (16) is fixedly mounted on the end surface of the electric control box; the peripheral side surface of the inner rotating cylinder (5) is rotatably connected to an outer spacer (6), an outer through hole (7) is fixedly mounted at the inner lower part of the outer spacer (6), and a guide cone head is fixedly mounted at the bottom end of the outer spacer (6); the spiral lifting module comprises an inner through hole (14) which is opened on the inner side of the inner rotating cylinder (5) and cooperates with the outer through hole (7), and the inner through hole (14) and the outer through hole (7) are both The outer rotary sleeve (3) is inclined in a direction close to the outer rotary sleeve (3), and the angles between the axes of the inner through hole (14) and the outer through hole (7) and the horizontal plane are both 25 degrees; the upper part of the sampling cylinder (2) is fixedly connected to a sample discharge tube (15), the discharge port of the sample discharge tube (15) is vertically downwardly arranged, the bottom end of the sample discharge tube (15) is slidably fitted with the indexing ring (13), the interior of the sample discharge tube (15) is built with a flow meter (17) electrically connected to the single-chip computer (16), and the peripheral side of the outer rotary sleeve (3) is fixedly installed with a spiral lifting piece (18), the peripheral edge of the spiral lifting piece (18) is The side surfaces are respectively rotatably fitted with the inner rotating cylinder (5) and the sampling cylinder (2); the peripheral side surface of the outer spacer (6) is rotatably connected with a stirring cylinder (8); a group of stirring members (9) distributed in a circular array are fixedly installed on the bottom surface of the stirring cylinder (8), and the stirring members (9) include a vertical stirring rod arranged vertically, the top end of the vertical stirring rod is fixedly connected to the stirring cylinder (8), and a group of horizontal stirring rods distributed in a linear array are fixedly installed on the peripheral side surface of the vertical stirring rod, the axis of the vertical stirring rod is parallel to the axis of the outer spacer (6), and the axis of the horizontal stirring rod is perpendicular to the axis of the vertical stirring rod; the surface of the gripping frame (1) is respectively fixedly installed with A dual-axis motor (10), a first motor (11) and a second motor (12); the two output shaft ends of the dual-axis motor (10) are respectively connected to the external rotating sleeve (3) and the stirring drum (8); the output shaft end of the first motor (11) is connected to the rotating shaft (4) via a first chain belt; the external rotation of the stirring drum (8) is connected to a transfer ring (13) driven by the second motor (12); a detection mechanism and a group of sample storage modules distributed in a circular array are respectively fixedly installed inside the transfer ring (13); and a detection drive mechanism cooperating with the detection mechanism is installed on the surface of the gripping frame (1);The sample storage module comprises a positioning cylinder (19), the peripheral side surface of the positioning cylinder (19) is slidably connected to the indexing ring (13), a group of pressure sensors (20) are installed between the relative surfaces of the positioning cylinder (19) and the indexing ring (13), the port of the pressure sensor (20) is electrically connected to the single-chip computer (16), the inner wall of the positioning cylinder (19) is threadedly connected to a sample storage cylinder (21), the bottom end of the sample storage cylinder (21) is fixedly installed with a bracket (22), and the inner wall of the bracket (22) is slidably connected to the sample storage cylinder (21). An elastic pressure rod (23) is connected, and a sealing seat (24) cooperating with the sample storage tube (21) is fixedly installed on the peripheral side of the elastic pressure rod (23), and a compression spring (25) is sleeved on the peripheral side of the elastic pressure rod (23) and corresponding to the position between the sealing seat (24) and the bracket (22); the bottom end of the sample storage tube (21) is open, and the top surface of the sealing seat (24) is fixedly provided with a guide cone surface cooperating with the sample storage tube (21); the detection drive mechanism includes a lifting frame (26) slidably connected to the grip frame (1), A vertically arranged lifting push rod (27) is fixedly installed between the opposing surfaces of the lifting frame (26) and the grip frame (1); a pressure column (28) and a detection column are symmetrically installed inside the lifting frame (26); a temperature and humidity probe (29), a camera (30) and a moisture meter (31) are fixedly installed inside the detection column, respectively; the data ports of the temperature and humidity probe (29), the camera (30) and the moisture meter (31) are all electrically connected to the single-chip computer (16); the detection mechanism comprises a pressure column (28) and a detection column (31) connected to the rotation ring; (13) a protective tube (32), a negative pressure tube (33), a brush tube (34) and a through pipe (35) which are fixedly connected, wherein a negative pressure fan and a ventilation mesh plate are installed in the negative pressure tube (33) from top to bottom in sequence, a cotton brush ring is fixedly arranged in the brush tube (34), and a group of electric heating rods distributed in a circular array and matched with the cotton brush ring are built in the brush tube (34); a battery electrically connected to the single-chip computer (16) is built in the electric control box, and a port of the battery is electrically connected to the single-chip computer (16); When it is necessary to perform a feed sampling operation, the user presses the outer spacer (6) and the inner rotating cylinder (5) through the handle (36), and finally the inner through hole (14) penetrates into the specified depth of the feed. During the sampling operation, the outer rotating sleeve (3) drives the spiral lifting piece (18) to rotate at a set speed. After the spiral lifting piece (18) rotates, the feed is lifted in the direction of the sample discharge tube (15). The feed lifted by the spiral lifting piece (18) is finally discharged through the sample discharge tube (15); during the sampling operation, the stirring drum (8) rotates at a set speed. After the stirring drum (8) rotates, it drives the horizontal stirring rod and the vertical stirring rod to revolve. After the horizontal stirring rod and the vertical stirring rod revolve, the flow rate of the feed to be tested is increased to improve the efficiency of the feed to be tested entering the inner rotating cylinder (5), and the horizontal stirring rod is driven to rotate. The revolution of the stirring rod and the vertical stirring rod can reduce the blockage rate of the feed to be tested on the outside of the inner through hole (14) and the outer through hole (7); in normal use, the elastic pressure rod (23) is in a non-stressed state, and the sealing seat (24) blocks the bottom end of the sample storage tube (21) under the action of the pressure spring (25). During the sample storage operation, quantitative sampling of feed at a specified depth is achieved through the pressure sensor (20); during the detection operation, first, an empty sample storage tube (21) is rotated to the bottom of the sample arrangement tube (15) and is coaxially connected with the sample arrangement tube (15). When the quantitative sampling inside the sample storage tube (21) is completed, the sample storage tube (21) with the quantitative feed is rotated to the bottom of the inspection column. Then, under the driving action of the lifting push rod (27), the temperature and humidity probe (2 9), the camera (30) and the moisture meter (31) penetrate into the interior of the feed to be inspected, and then perform various inspection operations on the feed in the sample storage tube (21); after the inspection is completed, and when the feed sample stored in the sample storage tube (21) needs to be quickly discharged, the sample storage tube (21) containing the feed can be moved to a coaxial position with the pressure column (28), and then the pressure column (28) applies quantitative pressure to the elastic pressure rod (23), so that a gap is generated between the sealing seat (24) and the sample storage tube (21), and the feed in the sample storage tube (21) can then be quickly emptied; when the device is not in use, the protective tube (32) is coaxially arranged with the inspection column, and the inspection column and the protective tube (32) are in contact, and the protective tube (32) is in contact with the temperature and humidity probe (29), the camera (30) and the moisture meter ( 31) for isolation protection; after each test is completed, the negative pressure cylinder (33) and the brush cylinder (34) perform cleaning and maintenance on the temperature and humidity probe (29), the camera (30) and the moisture meter (31) in turn; during the cleaning and maintenance operation, first, the temperature and humidity probe (29), the camera (30) and the moisture meter (31) are all inserted into the interior of the negative pressure cylinder (33), and negative pressure is generated in the negative pressure cylinder (33), and then negative pressure dust removal cleaning of the temperature and humidity probe (29), the camera (30) and the moisture meter (31) is achieved; then, the temperature and humidity probe (29), the camera (30) and the moisture meter (31) are inserted into the cotton brush circle, and then physical cleaning of the temperature and humidity probe (29), the camera (30) and the moisture meter (31) is achieved;During sampling, when it is necessary to discharge the residual feed in the inner rotating cylinder (5) or to discharge the feed in the inner rotating cylinder (5) directly, the through pipe (35) is connected to the sample discharge pipe (15), and then the feed in the inner rotating cylinder (5) is directly discharged or quickly guided out. ;

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