Soil sample grinding device

Abstract

The utility model discloses a soil sample grinding device which comprises a shell, an upper cover is arranged at the top of the shell, the upper cover is connected with the shell through a connecting assembly, a rotating hole is formed in the bottom of the upper cover, a connecting shaft is rotatably connected in the rotating hole, the bottom end of the connecting shaft is fixedly connected with a grinding head, and the grinding head is fixedly connected with the shell. A plurality of spiral grooves are formed in the outer side of the grinding head, a driving assembly enabling the connecting shaft to rotate is arranged in the upper cover, the position, located in the cavity, of the circumferential outer wall of the connecting shaft is sleeved with a torsional spring, and the two ends of the torsional spring are fixed to the upper cover and the connecting shaft respectively. According to the soil grinding device, the positions of soil above the grinding head and soil below the grinding head can be exchanged, the grinding device can be conveniently used, soil samples can smoothly enter the spiral groove according to the size, the using effect of the grinding device is improved, the grinding device can be conveniently restored, and the working efficiency is improved. And the use convenience of the grinding device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of soil grinding, in particular to a soil sample grinding device. Background Art

[0002] In the laboratory, some soil clumps need to be ground before testing. Grinding requires the use of a grinding device. The sizes of grinding devices are different, and the soils ground are also different.

[0003] After searching, the publication number CN217190056U discloses a soil sample grinding device, whose grinding bowl is set as a detachable split structure, which is convenient for taking out the sample in the bowl and also convenient for cleaning the inside of the bowl. However, it can only grind the bottom, and the soil above the grinding head and the ground soil below are not easy to exchange. The device needs to be stopped for manual adjustment, which makes the device inconvenient to use. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a soil sample grinding device.

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

[0006] A soil sample grinding device comprises a shell, wherein an upper cover is arranged on the top of the shell, and the upper cover is connected to the shell through a connecting component, a rotating hole is arranged at the bottom of the upper cover, a connecting shaft is rotatably connected in the rotating hole, a grinding head is fixedly connected to the bottom end of the connecting shaft, a plurality of spiral grooves are arranged on the outer side of the grinding head, a driving component for rotating the connecting shaft is arranged in the upper cover, a torsion spring is sleeved on the circumferential outer wall of the connecting shaft at a position in the cavity, and the two ends of the torsion spring are respectively fixed to the upper cover and the connecting shaft.

[0007] As a further solution of the utility model, the driving assembly includes a cavity, which is opened in the upper cover and communicated with the rotating hole. A winding roller is rotatably connected in the cavity, and the connecting shaft is fixed to the winding roller. A pull rope is wrapped around the circumferential outer wall of the winding roller, and one end of the pull rope passes through the upper cover.

[0008] As a further solution of the utility model, a avoidance groove is provided on an outer wall of one side of the upper cover, a pull handle is provided in the avoidance groove, and a pull rope is fixed to the pull handle.

[0009] As a further solution of the utility model, the connecting assembly includes a plurality of guide rods, and the plurality of guide rods are fixedly connected to the circumferential outer wall of the upper cover. The circumferential outer wall of the shell is fixedly connected with a plurality of fixing ears at the top position, and the plurality of guide rods pass through the plurality of fixing ears respectively.

[0010] As a further solution of the utility model, a plurality of fixed tubes are fixedly connected to the circumferential outer wall of the connecting shaft, a sliding rod is slidably connected inside the plurality of fixed tubes, and a push plate is fixedly connected to one end of two adjacent sliding rods located outside the fixed tube.

[0011] As a further solution of the utility model, one end of the sliding rod located in the fixed tube is fixedly connected to a tension spring, and the tension spring is fixed to the connecting shaft.

[0012] As a further solution of the utility model, an auxiliary handle is fixedly connected to the top outer wall of the upper cover.

[0013] The beneficial effects of the utility model are:

[0014] 1. Through the setting of the spiral groove, the soil sample moves downward from the spiral groove. The soil sample moving downward will squeeze the soil sample at the bottom and move upward from the gap between the grinding head and the shell, thereby realizing the exchange of the position of the soil above the grinding head and the soil below, making it convenient to use the grinding device.

[0015] 2. Through the setting of the push plate, the connecting shaft will move the slide bar outward from the fixed tube under the action of centrifugal force during rotation, so that the push plate can assist in grinding the soil sample, so that the size of the soil sample can smoothly enter the spiral groove, thereby improving the use effect of the grinding device.

[0016] 3. Through the setting of the tension spring, the tension spring will be stretched during the movement of the slide rod. When the connecting shaft stops rotating, the tension spring will pull the slide rod to move into the fixed tube, so that the push plate is reset, which is convenient for the grinding device to recover and improves the convenience of using the grinding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a soil sample grinding device proposed by the utility model;

[0018] Figure 2 This is a partial cross-sectional structural schematic diagram of a soil sample grinding device proposed by the utility model;

[0019] Figure 3 This is a partially enlarged structural schematic diagram of a soil sample grinding device proposed by the utility model;

[0020] Figure 4 This is a partially enlarged structural schematic diagram of a soil sample grinding device proposed by the utility model.

[0021] In the figure: 1. Shell; 2. Guide rod; 3. Fixing ear; 4. Upper cover; 5. Auxiliary handle; 6. Pull handle; 7. Connecting shaft; 8. Push plate; 9. Grinding head; 10. Fixing tube; 11. Sliding rod; 12. Spiral groove; 13. Winding roller; 14. Pull rope; 15. Tension spring; 16. Cavity; 17. Avoidance groove; 18. Torsion spring. DETAILED DESCRIPTION

[0022] 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. 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 those skilled in the art without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-Figure 4 A soil sample grinding device comprises a shell 1, a top cover 4 is provided on the top of the shell 1, the top cover 4 is connected to the shell 1 through a connecting assembly, a rotating hole is provided at the bottom of the top cover 4, a connecting shaft 7 is rotatably connected in the rotating hole, a grinding head 9 is fixed to the bottom end of the connecting shaft 7 by bolts, a plurality of spiral grooves 12 are provided on the outer side of the grinding head 9, a driving assembly for rotating the connecting shaft 7 is provided in the top cover 4, a torsion spring 18 is sleeved at a position where the circumferential outer wall of the connecting shaft 7 is located in a cavity 16, and two ends of the torsion spring 18 are respectively fixed to the top cover 4 and the connecting shaft 7, the connecting shaft 7 is driven to rotate by the driving assembly, and the connecting shaft 7 drives the grinding head 9 to rotate, and the grinding The grinding head 9 will grind the soil sample, and during the grinding process, the soil will move downward through the spiral groove 12 on the grinding head 9, and the soil sample moving downward will squeeze the soil sample at the bottom and move upward from the gap between the grinding head 9 and the shell 1. During the rotation of the connecting shaft 7, the torsion spring 18 will generate torsion, and the connecting shaft 7 will be reversed by the force of the torsion spring 18, at which time the grinding head 9 will be reversed, so that the soil below the grinding head 9 will move upward through the spiral groove 12, and the soil above will fall into the gap between the grinding head 9 and the shell 1, thereby realizing the exchange of the positions of the soil above the grinding head 9 and the soil below.

[0024] The driving assembly includes a cavity 16, which is opened in the upper cover 4. The cavity 16 is connected to the rotating hole. A winding roller 13 is rotatably connected in the cavity 16, and the connecting shaft 7 is fixed to the winding roller 13. A pull rope 14 is wrapped around the circumferential outer wall of the winding roller 13, and one end of the pull rope 14 passes through the upper cover 4. An avoidance groove 17 is opened on the outer wall of one side of the upper cover 4. A pull handle 6 is provided in the avoidance groove 17, and the pull rope 14 is fixed to the pull handle 6. The pull rope 14 is stretched by the pull handle 6, and the pull rope 14 will cause the winding roller 13 to rotate, and the winding roller 13 will drive the connecting shaft 7 to rotate. When the pull rope 14 is completely pulled out, the connecting shaft 7 will reverse through the action of the torsion spring 18.

[0025] In the utility model, the connection assembly includes a plurality of guide rods 2, and the plurality of guide rods 2 are welded to the circumferential outer wall of the upper cover 4. The circumferential outer wall of the shell 1 is welded with a plurality of fixing ears 3 at the top position. The plurality of guide rods 2 pass through the plurality of fixing ears 3 respectively. The guide rods 2 on the upper cover 4 pass through the fixing ears 3 on the shell 1, thereby connecting the upper cover 4 and the shell 1.

[0026] In order to ensure that the size of the soil sample can pass through the spiral groove 12 smoothly, a plurality of fixed tubes 10 are welded to the circumferential outer wall of the connecting shaft 7, and a sliding rod 11 is slidably connected inside the plurality of fixed tubes 10. A push plate 8 is welded to one end of two adjacent sliding rods 11 located outside the fixed tube 10, and a tension spring 15 is welded to one end of the sliding rod 11 located inside the fixed tube 10, and the tension spring 15 is fixed to the connecting shaft 7. During the rotation of the connecting shaft 7, the sliding rod 11 will move out of the fixed tube 10 under the action of centrifugal force, and the sliding rod 11 will drive the push plate 8 to move, so that the push plate 8 can assist in grinding the soil sample. During the movement of the sliding rod 11, the tension spring 15 will be stretched. When the connecting shaft 7 stops rotating, the sliding rod 11 will be reset by the force of the tension spring 15, and the top outer wall of the upper cover 4 is fixed with an auxiliary handle 5 by bolts.

[0027] Working principle: When it is needed, the pull rope 14 is stretched by pulling the handle 6, and the pull rope 14 will cause the winding roller 13 to rotate, and the winding roller 13 will drive the connecting shaft 7 to rotate, and the connecting shaft 7 will drive the grinding head 9 to rotate, and the grinding head 9 will grind the soil sample. During the grinding process, the soil will move downward through the spiral groove 12 on the grinding head 9, and the soil sample moving downward will squeeze the soil sample at the bottom and move upward from the gap between the grinding head 9 and the shell 1. During the rotation of the connecting shaft 7, the torsion spring 18 will generate torque. When the pull rope 14 is completely pulled out, the connecting shaft 7 will be reversed by the force of the torsion spring 18, and the grinding head 9 will be reversed at this time, so that the soil below the grinding head 9 moves upward through the spiral groove 12, and the soil above falls into the gap between the grinding head 9 and the shell 1, thereby realizing the exchange of the positions of the soil above the grinding head 9 and the soil below, which is convenient for the use of the grinding device.

[0028] Finally, it should be noted that: for those skilled in the art, they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this utility model shall be included in the protection scope of this utility model.

Claims

1. A soil sample grinding device, comprising a housing (1), characterized in that: An upper cover (4) is provided on the top of the shell (1), and the upper cover (4) is connected to the shell (1) through a connecting assembly. A rotating hole is provided at the bottom of the upper cover (4), and a connecting shaft (7) is rotatably connected in the rotating hole. A grinding head (9) is fixedly connected to the bottom end of the connecting shaft (7), and a plurality of spiral grooves (12) are provided on the outer side of the grinding head (9). A driving assembly for rotating the connecting shaft (7) is provided in the upper cover (4), and a torsion spring (18) is sleeved at a position of the circumferential outer wall of the connecting shaft (7) located in the cavity (16), and two ends of the torsion spring (18) are respectively fixed to the upper cover (4) and the connecting shaft (7).

2. A soil sample grinding device according to claim 1, characterized in that: The driving assembly comprises a cavity (16), wherein the cavity (16) is opened in the upper cover (4), the cavity (16) is communicated with the rotating hole, a winding roller (13) is rotatably connected in the cavity (16), and the connecting shaft (7) is fixed to the winding roller (13), a pull rope (14) is wound around the circumferential outer wall of the winding roller (13), and one end of the pull rope (14) passes through the upper cover (4).

3. A soil sample grinding device according to claim 2, characterized in that: An avoidance groove (17) is provided on one side outer wall of the upper cover (4), a pull handle (6) is provided in the avoidance groove (17), and a pull rope (14) is fixed to the pull handle (6).

4. The soil sample grinding device according to claim 1, characterized in that: The connection assembly comprises a plurality of guide rods (2), each of which is fixedly connected to the circumferential outer wall of the upper cover (4); a plurality of fixing ears (3) are fixedly connected to the circumferential outer wall of the shell (1) at the top, and the plurality of guide rods (2) pass through the plurality of fixing ears (3) respectively.

5. The soil sample grinding device according to claim 1, characterized in that: A plurality of fixed tubes (10) are fixedly connected to the circumferential outer wall of the connecting shaft (7), a sliding rod (11) is slidably connected inside each of the plurality of fixed tubes (10), and a push plate (8) is fixedly connected to one end of two adjacent sliding rods (11) located outside the fixed tube (10).

6. A soil sample grinding device according to claim 5, characterized in that: One end of the slide rod (11) located in the fixed tube (10) is fixedly connected to a tension spring (15), and the tension spring (15) is fixed to the connecting shaft (7).

7. The soil sample grinding device according to claim 1, characterized in that: An auxiliary handle (5) is fixedly connected to the top outer wall of the upper cover (4).

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