A grinding machine for pre-frozen soil samples in the laboratory

Abstract

The utility model discloses a grinder for laboratory pre-frozen soil samples, relates to the technical field of soil grinding equipment, comprises a grinder main body, a feed box is installed on the top of the grinder main body, a grinding bin is fixedly connected to the top of the inner part of the grinder main body, two rotating shafts are rotatably connected inside the grinder main body and located in the grinding bin, and a grinding roller is fixedly connected to the rotating shaft; the device realizes the knocking operation on the filter box through a knocking structure, during the filtering process, a round rod is driven to rotate by a first motor, an eccentric wheel performs eccentric movement with the rotation of the round rod, and the eccentric wheel continuously knocks the filter box during the rotation process, which can loosen the soil particles attached to the surface of the filter screen, prompting them to pass through the filter screen as soon as possible, further improving the filtering effect, ensuring that the soil particles meeting the particle size requirements fall from the filter screen to the bottom of the grinder main body, while the soil particles meeting the particle size requirements enter the connection box from the discharge trough.

Description

Technical Field

[0001] The utility model relates to the technical field of soil grinding equipment, in particular to a grinding instrument for laboratory pre-frozen soil samples. Background Art

[0002] The soil contains rich organic matter, such as humus, microbial cells, etc. In the laboratory soil sample analysis, fine grinding of the soil sample is a crucial preliminary step. The grinding effect directly affects the accuracy of the subsequent analysis results. The low temperature environment can reduce the thermal motion of molecules and effectively slow down the chemical reaction rate, so that the organic components can maintain their original structure and properties, which is convenient for the subsequent accurate analysis of organic pollutants in the soil, soil fertility and other related indicators. Therefore, it is very necessary to use a grinder to grind the pre-frozen soil samples in the laboratory.

[0003] After grinding the soil, most existing laboratory soil sample grinders only use a simple filter to filter out the unground particles. However, a single filter is prone to clogging after long-term use. Once the filter is clogged, it will seriously affect the filtration speed of the ground soil sample and reduce the efficiency of the entire experimental process. Therefore, those skilled in the art provide a laboratory pre-frozen soil sample grinder to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to provide a grinder for pre-frozen soil samples in a laboratory to solve the problems raised in the above-mentioned background technology.

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

[0006] A grinder for laboratory pre-frozen soil samples, comprising a grinder body, a filtering structure, a knocking structure and a conveying structure, characterized in that a feed box is installed at the top of the grinder body, a grinding bin is fixedly connected to the top of the inner part of the grinder body, two rotating shafts are rotatably connected inside the grinder body and located in the grinding bin, and a grinding roller is fixedly connected to the rotating shaft, a filtering structure is arranged inside the grinder body and located below the grinding bin, a knocking structure is arranged on one side of the outer part of the grinder body, and a conveying structure is arranged on the side of the outer part of the grinder body away from the knocking structure.

[0007] As a further solution of the utility model: the filtering structure includes a first telescopic rod, a filter box, a filter net, a spring, a second telescopic rod, a discharge trough, a connecting box and a through groove, two first telescopic rods are fixedly connected to one end of the interior of the grinder body, the other end of the first telescopic rod is fixedly connected to the filter box, two second telescopic rods are fixedly connected to one end of the interior of the grinder body, and the other end of the second telescopic rod is connected to the filter box, two springs are arranged between the inner side wall of the grinder body and the filter box, and the two springs are arranged between the two second telescopic rods.

[0008] As a further solution of the utility model: a filter screen is fixedly connected to the bottom end of the filter box, and the filter screen is inclined, and a discharge groove is opened on the outer wall of the filter box, a connecting box is fixedly connected to the outer wall of the filter box and located at the discharge groove, and a through groove compatible with the connecting box is opened on the side wall of the grinder body.

[0009] As a further solution of the utility model: the knocking structure includes a fixed box, a mounting frame, a first motor, a round rod and an eccentric wheel, the fixed box is fixedly connected to the outer wall of the grinder body, the mounting frame is fixedly connected to the top of the fixed box, and the first motor is installed inside the mounting frame, and the round rod is rotatably connected inside the fixed box, and the top of the round rod passes through the fixed box and is fixedly connected to the output end of the first motor, and the eccentric wheel is fixedly connected to the round rod.

[0010] As a further solution of the utility model: the conveying structure includes a conveying box, a conveying rod, a spiral conveying blade, a feed channel and a discharge channel. The conveying box is placed on the side of the grinder body away from the fixed box. The conveying rod is rotatably connected inside the conveying box, and the conveying rod is equipped with a spiral conveying blade. A feed channel is installed on one side of the conveying box, and the other end of the feed channel is connected to the grinder body. The end of the connecting box away from the filter box passes through the through groove to the feed channel. A discharge channel is arranged on one side of the conveying box and above the feed channel, and the other end of the discharge channel is connected to the feed box.

[0011] As a further solution of the utility model: the bottom end of the conveying rod passes through the conveying box and is fixedly connected to the second synchronous wheel, the bottom end of the round rod passes through the fixed box and is fixedly connected to the first synchronous wheel, and a synchronous belt is arranged between the first synchronous wheel and the second synchronous wheel.

[0012] As a further solution of the utility model: the front ends of the two rotating shafts penetrate the grinder body and are fixedly connected with connecting gears, the front end of the grinder body is fixedly connected with a mounting plate, and a second motor is installed on the top of the mounting plate.

[0013] As a further solution of the utility model: a driving gear is fixedly connected to the output end of the second motor, and the driving gear is meshedly connected with a connecting gear.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The device realizes the filtering operation of the ground soil by setting a filtering structure. The soil sample after low temperature freezing is ground by two grinding rollers. The ground soil particles fall into the filter box. The inclined filter screen at the bottom of the filter box filters the soil particles. The soil particles that meet the particle size requirements pass through the filter screen, and the soil particles that do not meet the requirements slide down along the inclined filter screen to the discharge trough.

[0016] The device realizes the knocking operation on the filter box by setting a knocking structure. During the filtering process, the round rod is driven to rotate by the first motor, and the eccentric wheel performs eccentric movement as the round rod rotates. The eccentric wheel will continuously knock the filter box during the rotation process, which can loosen the soil particles attached to the surface of the filter screen, prompting them to pass through the filter screen as soon as possible, further improving the filtering effect, ensuring that the soil particles that meet the particle size requirements fall from the filter screen to the bottom of the grinder body, and the soil particles that do not meet the particle size requirements enter the connection box from the discharge trough, further preventing the filter screen from being blocked, and ensuring the smooth filtering process;

[0017] The device completes the automatic circulation operation of insufficiently ground soil samples through the setting of the conveying structure. The insufficiently ground soil particles entering the feed channel are conveyed upward by spiral conveying through the spiral conveying blades. These soil particles return to the feed box through the discharge channel and enter the grinding chamber again for cyclic grinding, thereby improving work efficiency and ensuring that the soil samples can be fully ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of a grinder for laboratory pre-frozen soil samples.

[0019] Figure 2 A front view of a grinder for laboratory pre-frozen soil samples.

[0020] Figure 3 A magnified image of A in a grinder for a laboratory pre-frozen soil sample.

[0021] Figure 4 A magnified image of B in a grinder for a laboratory pre-frozen soil sample.

[0022] In the figure: 1. grinder body; 2. feed box; 3. grinding chamber; 4. rotating shaft; 5. grinding roller; 6. first telescopic rod; 7. filter box; 8. filter screen; 9. spring; 10. second telescopic rod; 11. discharge trough; 12. connecting box; 13. through slot; 14. fixing box; 15. mounting frame; 16. first motor; 17. round rod; 18. eccentric wheel; 19. first synchronous wheel; 20. synchronous belt; 21. conveying box; 22. conveying rod; 23. spiral conveying blade; 24. second synchronous wheel; 25. feed channel; 26. discharge channel; 27. connecting gear; 28. mounting plate; 29. ​​second motor; 30. driving gear. DETAILED DESCRIPTION

[0023] 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 of 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.

[0024] Example 1: Reference Figure 1-4 This embodiment provides a grinder for laboratory pre-frozen soil samples, including a grinder body 1, a filtering structure, a knocking structure and a conveying structure, characterized in that a feed box 2 is installed at the top of the grinder body 1, a grinding bin 3 is fixedly connected to the top of the grinder body 1, two rotating shafts 4 are rotatably connected inside the grinder body 1 and located in the grinding bin 3, and a grinding roller 5 is fixedly connected to the rotating shaft 4, a filtering structure is arranged inside the grinder body 1 and below the grinding bin 3, a knocking structure is arranged on one side of the outside of the grinder body 1, and a conveying structure is arranged on the side of the outside of the grinder body 1 away from the knocking structure.

[0025] The filtering structure includes a first telescopic rod 6, a filter box 7, a filter screen 8, a spring 9, a second telescopic rod 10, a discharge trough 11, a connecting box 12 and a through groove 13. Two first telescopic rods 6 are fixedly connected to one end of the grinder body 1, and the other end of the first telescopic rod 6 is fixedly connected to the filter box 7. Two second telescopic rods 10 are fixedly connected to one end of the grinder body 1, and the other end of the second telescopic rod 10 is connected to the filter box 7. Two springs 9 are arranged between the inner wall of the grinder body 1 and the filter box 7, and the two springs 9 are arranged between the two second telescopic rods 10.

[0026] The bottom end of the filter box 7 is fixedly connected with a filter screen 8, and the filter screen 8 is inclined, and a discharge groove 11 is opened on the outer wall of the filter box 7, and a connecting box 12 is fixedly connected on the outer wall of the filter box 7 and located at the discharge groove 11, and a through groove 13 adapted to the connecting box 12 is opened on the side wall of the grinder body 1.

[0027] The front ends of the two rotating shafts 4 penetrate the grinder body 1 and are fixedly connected to a connecting gear 27. The front end of the grinder body 1 is fixedly connected to a mounting plate 28, and a second motor 29 is installed on the top of the mounting plate 28. A driving gear 30 is fixedly connected to the output end of the second motor 29, and the driving gear 30 is meshed with a connecting gear 27.

[0028] When the present embodiment is in use, the second motor 29 is first started, and the driving gear 30 at the output end thereof drives a connecting gear 27 meshing with it to rotate. Since the two connecting gears 27 are related to each other, the two rotating shafts 4 are driven to rotate synchronously, so that the grinding roller 5 fixed on the rotating shaft 4 starts to work, and the soil sample after low-temperature freezing enters the grinding chamber 3 from the feed box 2, and is ground into small particles under the squeezing and friction of the two relatively rotating grinding rollers 5. The ground soil particles fall into the filter box 7, and the inclined filter screen 8 at the bottom end of the filter box 7 filters the soil particles. The soil particles that meet the particle size requirements will pass through the filter screen 8 and be discharged from the discharge trough at the bottom end of the grinder main body 1, while the soil that does not meet the particle size requirements will slide down along the inclined filter screen 8 to the discharge trough 11. During the filtering process, the filter box 7 is connected to the grinder main body 1 through the first telescopic rod 6 and the second telescopic rod 10, and a spring 9 is provided between the inner side wall of the grinder main body 1 and the filter box 7. The combination of the first telescopic rod 6, the second telescopic rod 10 and the spring 9 makes the filter box 7 A flexible shock-absorbing connection structure is formed between the grinder body 1. During the grinding process, the vibration generated by the equipment will be transmitted to the filter box 7. The telescopic rod and the spring can buffer the vibration, reduce the impact on the filter screen 8, and extend its service life.

[0029] Example 2: Reference Figure 1-4 This embodiment is based on the previous embodiment, and is different from the previous embodiment in that the knocking structure includes a fixed box 14, a mounting frame 15, a first motor 16, a round rod 17 and an eccentric wheel 18, and the fixed box 14 is fixedly connected to the outer wall of the grinder body 1, the mounting frame 15 is fixedly connected to the top of the fixed box 14, and the first motor 16 is installed inside the mounting frame 15, and the round rod 17 is rotatably connected inside the fixed box 14, and the top of the round rod 17 passes through the fixed box 14 and is fixedly connected to the output end of the first motor 16, and the eccentric wheel 18 is fixedly connected to the round rod 17.

[0030] When the present embodiment is in use, during the filtering process, the first motor 16 is turned on, and the first motor 16 drives the round rod 17 to rotate. Since the round rod 17 is fixedly connected with the eccentric wheel 18, the eccentric wheel 18 performs eccentric movement as the round rod 17 rotates. The eccentric wheel 18 will continuously knock the filter box 7 during the rotation process, which can loosen the soil particles attached to the surface of the filter screen 8, prompting them to pass through the filter screen 8 as soon as possible, further improving the filtering effect, ensuring that the soil particles that meet the particle size requirements fall from the filter screen 8 to the bottom of the grinder body 1, and the soil particles that do not meet the particle size requirements enter the connection box 12 from the discharge trough 11, further preventing the filter screen 8 from being blocked, and ensuring the smooth filtering process.

[0031] Example 3: Reference Figure 1 , Figure 2 and Figure 4 This embodiment is based on the previous embodiment, and is different from the previous embodiment in that the conveying structure includes a conveying box 21, a conveying rod 22, a spiral conveying blade 23, a feed channel 25 and a discharge channel 26. The conveying box 21 is placed on the side of the grinder body 1 away from the fixed box 14, and the conveying rod 22 is rotatably connected inside the conveying box 21, and the spiral conveying blade 23 is installed on the conveying rod 22. A feed channel 25 is installed on one side of the conveying box 21, and the other end of the feed channel 25 is connected to the grinder body 1, and the end of the connecting box 12 away from the filter box 7 passes through the through groove 13 to the feed channel 25, and a discharge channel 26 is arranged on one side of the conveying box 21 and above the feed channel 25, and the other end of the discharge channel 26 is connected to the feed box 2.

[0032] The bottom end of the conveying rod 22 passes through the conveying box 21 and is fixedly connected to the second synchronous wheel 24 . The bottom end of the round rod 17 passes through the fixed box 14 and is fixedly connected to the first synchronous wheel 19 . A synchronous belt 20 is arranged between the first synchronous wheel 19 and the second synchronous wheel 24 .

[0033] When the present embodiment is in use, when the round rod 17 rotates, the first synchronous wheel 19 at its bottom end rotates accordingly, and the first synchronous wheel 19 drives the second synchronous wheel 24 to rotate through the synchronous belt 20, so that the conveying rod 22 fixedly connected to the second synchronous wheel 24 rotates, and the spiral conveying blade 23 installed on the conveying rod 22 rotates with the rotation of the conveying rod 22, and the insufficiently ground soil particles entering the feed channel 25 from the connecting box 12 through the through groove 13 are conveyed upward by spiral conveying. These soil particles return to the feed box 2 through the discharge channel 26 and enter the grinding chamber 3 again for cyclic grinding, thereby improving the working efficiency and ensuring that the soil sample can be fully ground until the ideal particle size requirement is reached. The soil that has been fully ground and filtered is discharged from the discharge trough at the bottom end of the grinder body 1.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A grinder for pre-frozen soil samples in a laboratory, comprising a grinder body (1), a filtering structure, a knocking structure and a conveying structure, characterized in that: A feed box (2) is installed at the top of the grinding machine body (1); a grinding chamber (3) is fixedly connected to the top of the grinding machine body (1); two rotating shafts (4) are rotatably connected to the grinding chamber (3) and are located inside the grinding machine body (1); a grinding roller (5) is fixedly connected to the rotating shaft (4); a filtering structure is arranged inside the grinding machine body (1) and below the grinding chamber (3); a knocking structure is arranged on one side of the outside of the grinding machine body (1); and a conveying structure is arranged on the side of the outside of the grinding machine body (1) away from the knocking structure; The knocking structure comprises a fixed box (14), a mounting frame (15), a first motor (16), a round rod (17) and an eccentric wheel (18); the fixed box (14) is fixedly connected to the outer wall of the grinding machine body (1); the mounting frame (15) is fixedly connected to the top of the fixed box (14); the first motor (16) is installed inside the mounting frame (15); the round rod (17) is rotatably connected inside the fixed box (14); the top of the round rod (17) passes through the fixed box (14) and is fixedly connected to the output end of the first motor (16); and the eccentric wheel (18) is fixedly connected to the round rod (17); The front ends of the two rotating shafts (4) penetrate the grinding machine body (1) and are fixedly connected to a connecting gear (27); the front end of the grinding machine body (1) is fixedly connected to a mounting plate (28); a second motor (29) is mounted on the top of the mounting plate (28); a driving gear (30) is fixedly connected to the output end of the second motor (29); and the driving gear (30) is meshingly connected to a connecting gear (27).

2. A grinder for laboratory pre-frozen soil samples according to claim 1, characterized in that: The filtering structure comprises a first telescopic rod (6), a filter box (7), a filter screen (8), a spring (9), a second telescopic rod (10), a discharge trough (11), a connection box (12) and a through slot (13); two first telescopic rods (6) are fixedly connected to one end of the grinder body (1); the filter box (7) is fixedly connected to the other end of the first telescopic rod (6); two second telescopic rods (10) are fixedly connected to one end of the grinder body (1); the other end of the second telescopic rod (10) is connected to the filter box (7); two springs (9) are arranged between the inner side wall of the grinder body (1) and the filter box (7); and the two springs (9) are arranged between the two second telescopic rods (10).

3. A grinder for laboratory pre-frozen soil samples according to claim 2, characterized in that: A filter screen (8) is fixedly connected to the bottom end of the filter box (7), and the filter screen (8) is inclined. A discharge groove (11) is provided on the outer wall of the filter box (7). A connection box (12) is fixedly connected to the outer wall of the filter box (7) at the discharge groove (11). A through groove (13) adapted to the connection box (12) is provided on the side wall of the grinder body (1).

4. The grinder for laboratory pre-frozen soil samples according to claim 1, characterized in that: The conveying structure comprises a conveying box (21), a conveying rod (22), a spiral conveying blade (23), a feed channel (25) and a discharge channel (26); the conveying box (21) is placed on a side of the grinding machine body (1) away from the fixed box (14); the conveying rod (22) is rotatably connected inside the conveying box (21), and the spiral conveying blade (23) is installed on the conveying rod (22); a feed channel (25) is installed on one side of the conveying box (21), and the other end of the feed channel (25) is connected to the grinding machine body (1); and the end of the connection box (12) away from the filter box (7) passes through the through groove (13) to the feed channel (25); a discharge channel (26) is arranged on one side of the conveying box (21) and above the feed channel (25), and the other end of the discharge channel (26) is connected to the feed box (2).

5. The grinder for laboratory pre-frozen soil samples according to claim 4, characterized in that: The bottom end of the conveying rod (22) passes through the conveying box (21) and is fixedly connected to a second synchronous wheel (24); the bottom end of the round rod (17) passes through the fixing box (14) and is fixedly connected to a first synchronous wheel (19); and a synchronous belt (20) is provided between the first synchronous wheel (19) and the second synchronous wheel (24).

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