Screening device for soil sampling

Abstract

The utility model discloses a screening device for soil sampling. The screening device comprises a supporting frame, a bearing disc, a bottom basin, a screening frame, a screening cover, a shaking mechanism and a vibrating mechanism. The bearing disc is installed on the supporting frame through a shaking mechanism to shake. A containing groove matched with the bottom of the bottom basin is formed in the upper end of the bearing disc, the bottom basin is arranged in the containing groove, the screen frame is installed at the upper end of the bottom basin, and the screen cover is installed at the upper end of the screen frame. The vibrating mechanism is installed on the supporting frame and connected with the screen cover to enable the screen cover to vibrate, by arranging the vibrating mechanism connected with the screen cover, in the process that the shaking mechanism shakes the screen frame to screen powder, the vibrating mechanism enables the screen cover to vibrate so that the vibration can be transmitted to the screen frame, the screen frame vibrates, and screen holes of the screen frame can be dredged; therefore, blockage of screen holes of the screen frame is reduced, and screening efficiency of the screen frame is improved.

Description

Technical Field

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

[0002] Soil analysis refers to a series of chemical, physical and biological tests and analyses of soil to determine the properties, composition and quality of the soil. Soil analysis can provide information such as soil nutrient content, pH value, organic matter content, soil texture and moisture content, thus providing a scientific basis for agricultural production, soil improvement and environmental protection.

[0003] Soil sampling is required before soil analysis. Generally, the sampled soil will contain stones and other large particles of impurities. Therefore, the soil sample needs to be screened after sampling to screen out fine particles of soil for analysis.

[0004] In the prior art, a general screening device pours soil into a screen frame and then places the screen frame on a shaking mechanism to shake the screen frame to screen out fine particles of soil. However, only shaking and screening are performed, and the soil blocked in the screen holes of the screen frame during the screening process cannot be discharged, thereby causing the screen holes of the screen frame to be gradually blocked, thereby reducing the screening efficiency. Utility Model Content

[0005] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a screening device for soil sampling.

[0006] In order to achieve the above technical effects, the utility model adopts the following scheme:

[0007] A screening device for soil sampling, comprising a support frame, a load-bearing plate, a bottom basin, a screen frame, a screen cover, a shaking mechanism and a vibration mechanism;

[0008] The load-bearing plate is mounted on the support frame through a shaking mechanism for shaking;

[0009] The upper end of the load-bearing plate has a placement groove matching the bottom of the bottom basin, the bottom basin is placed in the placement groove, the screen frame is installed on the upper end of the bottom basin, and the screen cover is installed on the upper end of the screen frame;

[0010] The vibration mechanism is installed on the support frame and connected with the screen cover to make the screen cover vibrate.

[0011] According to a preferred technical solution, the shaking mechanism includes a horizontally arranged support beam, a first turntable, a first motor, a rotating rod, a limiting rod and a first support block;

[0012] The load-bearing plate is installed on the support beam;

[0013] The limit rod and the rotating rod are respectively arranged at two ends of the support beam, the limit rod is vertically fixedly installed on the support frame, the rotating rod is vertically rotatably installed on the support frame, and the rotating rod is driven to rotate by a first motor;

[0014] The support beam has a first strip through hole vertically penetrating the support beam at one end corresponding to the limiting rod, the width of the first strip through hole matches the limiting rod, the limiting rod passes through the first strip through hole and is movably arranged in the first strip through hole, and the first support block is fixedly mounted on the limiting rod and supported on the lower end of the support beam;

[0015] The first turntable is fixedly mounted on the lower end of the rotating rod, the rotating rod is connected to the center of the first turntable, the lower end of the first turntable is fixedly provided with a first connecting column away from the center, and the end of the support beam corresponding to the rotating rod is hinged to the first connecting column.

[0016] The preferred technical solution is that the vibration mechanism includes an impact rod, an impact head, a push rod and a lifting mechanism;

[0017] One end of the impact rod is hinged to the support frame, and the impact head is installed on the other end of the impact rod and is located above the screen cover;

[0018] The lower end of the impact rod is provided with a push rod vertically installed on the support frame. The push rod is connected to the lifting mechanism and slides vertically on the support frame. The upper end of the push rod is loosely connected to the lower end of the impact rod and is used to lift the impact rod for rotation.

[0019] According to a preferred technical solution, the lifting mechanism comprises a cylinder vertically mounted on a support frame, and a telescopic rod of the cylinder is fixedly connected upward to the lower end of the push rod.

[0020] A preferred technical solution is that the number of the sieve frames is at least two, at least two sieve frames are stacked and connected in the vertical direction, the sieve frame at the lower end is installed at the upper end of the bottom basin, and the sieve frame at the upper end is connected to the sieve cover, the sieve holes of at least two of the sieve frames have different sizes, and at least two sieve frames are distributed and connected from top to bottom according to their sieve hole sizes from large to small.

[0021] A preferred technical solution is that the side of the sieve cover is fixedly connected with two connecting parts corresponding to the rotating rod and the limiting rod respectively, one of the connecting parts is vertically penetrated by a second strip through hole matching the limiting rod, the limiting rod is arranged through the second strip through hole, and the limiting rod is fixedly provided with a second supporting block that is supported at the lower end of the connecting part; a second turntable is fixedly installed on the upper end of the rotating rod, the upper end of the rotating rod is connected to the center of the second turntable, and the upper end of the second turntable is provided with a second connecting column located on the same vertical line as the first connecting column, and the other connecting part is hinged to the second connecting column.

[0022] The preferred technical solution is that the lower ends of the two connecting parts are respectively fixedly connected with vertically arranged connecting rods, the lower ends of the connecting rods are fixedly installed on the supporting beam, a supporting cross bar is provided between the two connecting rods, both ends of the supporting cross bar are respectively provided with vertically penetrating sliding holes, the sliding holes match the connecting rods, the two ends of the supporting cross bar are respectively sleeved on the two connecting rods through two sliding holes and slide vertically, the side of the supporting cross bar is provided with a threaded hole connected with the sliding hole, the threaded hole is matched with an upper bolt that is screwed against the connecting rod, and the load-bearing plate is fixedly installed on the upper end of the supporting cross beam.

[0023] Compared with the prior art, the beneficial effects are:

[0024] The utility model has a simple structure and is easy to use. By arranging a vibration mechanism connected to the sieve cover, when the shaking mechanism shakes the sieve frame to sift powder, the vibration mechanism causes the sieve cover to vibrate, which is then transmitted to the sieve frame. The sieve frame itself vibrates to dredge the sieve holes of the sieve frame, thereby reducing the blockage of the sieve holes of the sieve frame and improving the screening efficiency of the sieve frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 It is a cross-sectional schematic diagram of the bottom basin, the screen frame and the screen cover in the utility model.

[0027] 1. Support frame; 2. Load-bearing plate; 3. Support cross bar; 4. Support beam; 5. Limit rod; 6. First support block; 7. Rotating rod; 8. First turntable; 9. Support seat; 10. First synchronous wheel; 11. Second synchronous wheel; 12. First motor; 13. Connecting rod; 14. Bolt; 15. Bottom basin; 16. Screen frame; 17. Screen cover; 18. Connecting part; 19. Second support block; 20. Second turntable; 21. Impact rod; 22. Impact head; 23. Push rod; 24. Guide sleeve; 25. Cylinder; 26. Placement slot; 27. Screen hole. DETAILED DESCRIPTION

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

[0029] A screening device for soil sampling, comprising a support frame 1, a load-bearing plate 2, a bottom basin 15, a screen frame 16, a screen cover 17, a shaking mechanism and a vibration mechanism;

[0030] The load-bearing plate 2 is mounted on the support frame 1 through a shaking mechanism for shaking;

[0031] The upper end of the load-bearing plate 2 has a placement groove 26 matching the bottom of the bottom basin 15, the bottom basin 15 is placed in the placement groove 26, the screen frame 16 is installed on the upper end of the bottom basin 15, and the screen cover 17 is installed on the upper end of the screen frame 16;

[0032] The vibration mechanism is installed on the support frame 1 and connected to the sieve cover 17 to make the sieve cover 17 vibrate.

[0033] The support frame 1 serves as the overall frame of the screening device, and the shaking mechanism and the vibration mechanism are both installed on the support frame 1. The bottom basin 15 is placed in the placement groove 26 of the load-bearing plate 2 for limiting, and then the screen frame 16 is installed on the upper end of the bottom basin 15. The screen frame 16 and the bottom basin 15 adopt the existing technology. The bottom of the screen frame has screen holes for screening. The soil powder sieved by the screen frame falls into the bottom basin for collection. The soil to be screened is poured into the screen frame 16 and then connected to the screen cover 17. The shaking mechanism is started to shake so that the soil in the screen frame 16 can be spread out instead of piled up for screening, which is convenient for improving the screening efficiency. At the same time, the vibration mechanism is connected to the screen cover 17 to make the screen cover 17 vibrate. Since the screen cover 17 is connected to the screen frame 16, the vibration is transmitted to the screen frame 16. The screen frame 16 vibrates itself, which can dredge the screen holes 27 of the screen frame 16, thereby reducing the blockage of the screen holes 27 of the screen frame 16 and improving the screening efficiency of the screen frame 16.

[0034] The preferred technical solution is that the shaking mechanism includes a horizontally arranged support beam 4, a first turntable 8, a first motor 12, a rotating rod 7, a limiting rod 5 and a first support block 6;

[0035] The load-bearing plate 2 is mounted on the support beam 4;

[0036] The limit rod 5 and the rotating rod 7 are respectively arranged at both ends of the support beam 4, the limit rod 5 is vertically fixedly installed on the support frame 1, the rotating rod 7 is vertically rotatably installed on the support frame 1, the rotating rod 7 is driven to rotate by the first motor 12, a first synchronous wheel 10 is installed on the rotating rod 7, the first motor 12 is installed on the support frame 1, a second synchronous wheel 11 is installed at the output end of the first motor 12, and the first synchronous wheel 10 and the second synchronous wheel 11 are connected by a synchronous belt transmission;

[0037] The support beam 4 has a first strip through hole vertically penetrating the support beam 4 at one end corresponding to the limiting rod 5. The width of the first strip through hole matches the limiting rod 5. The limiting rod 5 passes through the first strip through hole and is movably arranged in the first strip through hole, so that the support beam 4 can be sleeved on the limiting rod 5 and move back and forth. The first support block 6 is fixedly mounted on the limiting rod 5 and is supported on the lower end of the support beam 4.

[0038] The first turntable 8 is fixedly installed on the lower end of the rotating rod 7, and the rotating rod 7 is connected to the center of the first turntable 8. The lower end of the first turntable 8 is fixedly provided with a first connecting column deviating from the center. The end of the support beam 4 corresponding to the rotating rod 7 is hinged to the first connecting column. The support frame 1 is provided with a support seat 9 that rests on the lower end of the support beam 4. The support beam 4 is supported and slides on the support seat 9, and the support beam 4 is supported by the support seat 9.

[0039] The first motor 12 drives the rotating rod 7 to rotate, thereby driving the first turntable 8 to rotate. One end of the support beam 4 is hinged to the first turntable 8, so that the first turntable 8 drives one end of the support beam 4 to rotate around the center of the first turntable 8, thereby driving the support beam 4 to shake on the horizontal plane, and driving the screen frame 16 to shake.

[0040] The preferred technical solution is that the vibration mechanism includes an impact rod 21, an impact head 22, a push rod and a lifting mechanism;

[0041] One end of the impact rod 21 is hinged to the support frame 1, and the other end of the impact rod 21 rotates vertically around the hinge between the impact rod 21 and the support frame 1. The impact head 22 is installed at the other end of the impact rod 21 and is located above the screen cover 17.

[0042] The lower end of the impact rod 21 is provided with a push rod 23 vertically installed on the support frame 1. The push rod 23 is connected to the lifting mechanism and slides vertically on the support frame 1. The upper end of the push rod 23 is loosely connected to the lower end of the impact rod 21 and is used to lift the impact rod 21 for rotation. The push rod 23 is connected to a vertical guide mechanism so that it can only move vertically. The guide mechanism includes a guide sleeve 24 installed on the support frame 1, and the push rod 23 is arranged through the guide sleeve 24.

[0043] The lifting mechanism drives the push rod 23 to rise, and the push rod 23 presses on the lower end of the impact rod 21 and lifts the impact rod 21 to rotate toward the hole, so that the impact head 22 rises and moves away from the sieve cover 17, and then the push rod 23 descends under the drive of the lifting mechanism, so that the impact rod 21 loses its support, and the impact rod 21 rotates downward under the action of its own gravity, so that the impact head 22 falls and hits the sieve cover 17, causing the sieve cover 17 to vibrate.

[0044] According to a preferred technical solution, the lifting mechanism comprises a cylinder 25 vertically mounted on the support frame 1 , and a telescopic rod of the cylinder 25 is fixedly connected to the lower end of the push rod 23 upward.

[0045] According to a preferred technical solution, the number of the sieve frames 16 is at least two, at least two sieve frames 16 are stacked and connected in the vertical direction, the sieve frame 16 at the lower end is installed on the upper end of the bottom basin 15, and the sieve frame 16 at the upper end is connected to the sieve cover 17, the sieve holes 27 of at least two of the sieve frames 16 are different in size, and at least two sieve frames 16 are distributed and connected from top to bottom according to the size of their sieve holes 27 from large to small.

[0046] A plurality of sieve frames 16 with sieve holes 27 of different sizes are set for graded screening. Since the particles to be screened out are of various sizes, if screening is performed directly on the sieve frame 16 with small sieve holes 27, these large particles of different sizes will be blocked at the position of the sieve holes 27, so that the soil powder cannot be screened quickly. Through graded screening, large particles are gradually screened out, so that the amount of soil on each layer of the sieve frame 16 from top to bottom is gradually reduced, which can improve the screening efficiency.

[0047] According to a preferred technical solution, two connecting parts 18 corresponding to the rotating rod 7 and the limiting rod 5 are fixedly connected to the side of the sieve cover 17, one of the connecting parts 18 is vertically penetrated by a second strip-shaped through hole matching the limiting rod 5, the limiting rod 5 is arranged through the second strip-shaped through hole, and a second supporting block 19 is fixedly provided on the limiting rod 5 to support the lower end of the connecting part 18; a second turntable 20 is fixedly installed on the upper end of the rotating rod 7, the upper end of the rotating rod 7 is connected to the center of the second turntable 20, and the upper end of the second turntable 20 is provided with a second connecting column located on the same vertical line as the first connecting column, wherein the other connecting part 18 is hinged to the second connecting column.

[0048] The sieve cover 17 is respectively sleeved on the limit rod 5 through two connecting parts 18 to move back and forth, and is connected to the second turntable 20 for rotation, so that the sieve cover 17 and the support beam 4 slide synchronously. The sieve cover 17 is connected to the support frame 1 through this structure. The sieve cover 17 and the load-bearing plate 2 work together to clamp the bottom basin 15 and the sieve frame 16, so that the bottom basin 15 and the sieve frame 16 are more stable and will not tip over during shaking.

[0049] According to the preferred technical solution, the lower ends of the two connecting parts 18 are respectively fixedly connected with vertically arranged connecting rods 13, and the lower ends of the connecting rods 13 are fixedly installed on the support beam 4. A supporting cross bar 3 is provided between the two connecting rods 13, and vertically penetrating sliding holes are respectively provided at both ends of the supporting cross bar 3, and the sliding holes match the connecting rods 13. The two ends of the supporting cross bar 3 are respectively vertically slid on the two connecting rods 13 through two sliding holes, and the side of the supporting cross bar 3 is provided with a threaded hole connected with the sliding hole, and the threaded hole is matched with an upper bolt 14 that is screwed against the connecting rod 13, and the load-bearing plate 2 is fixedly installed on the upper end of the supporting cross beam.

[0050] Loosening the bolts 14 can move the supporting cross bar 3 in the vertical direction, and move the load-bearing plate 2 and the bottom basin 15 in the vertical direction. Therefore, when the number of screen frames 16 is changed, the uppermost screen frame 16 can be supported against the lower end of the screen cover 17 by moving the positions of the load-bearing plate 2 and the bottom basin 15, and then the bolts 14 are tightened to fix it.

[0051] In the description of the present utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present utility model.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0053] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. A screening device for soil sampling, characterized in that: It comprises a support frame (1), a load-bearing plate (2), a bottom basin (15), a screen frame (16), a screen cover (17), a shaking mechanism and a vibration mechanism; The load-bearing plate (2) is mounted on the support frame (1) via a shaking mechanism and shaken; The upper end of the load-bearing plate (2) has a placement groove (26) matching the bottom of the bottom basin (15), the bottom basin (15) is placed in the placement groove (26), the screen frame (16) is installed on the upper end of the bottom basin (15), and the screen cover (17) is installed on the upper end of the screen frame (16); The vibration mechanism is mounted on the support frame (1) and connected to the screen cover (17) to cause the screen cover (17) to vibrate.

2. A soil sampling screening device as claimed in claim 1, characterized in that: The shaking mechanism comprises a horizontally arranged support beam (4), a first rotating disk (8), a first motor (12), a rotating rod (7), a limiting rod (5) and a first supporting block (6); The load-bearing plate (2) is mounted on the support beam (4); The limiting rod (5) and the rotating rod (7) are respectively arranged at two ends of the support beam (4); the limiting rod (5) is vertically fixedly mounted on the support frame (1); the rotating rod (7) is vertically rotatably mounted on the support frame (1); and the rotating rod (7) is driven to rotate by a first motor (12); The support beam (4) has a first strip-shaped through hole on one end corresponding to the limiting rod (5) and vertically penetrates the support beam (4); the width of the first strip-shaped through hole matches that of the limiting rod (5); the limiting rod (5) passes through the first strip-shaped through hole and is movably arranged in the first strip-shaped through hole; the first support block (6) is fixedly mounted on the limiting rod (5) and is supported on the lower end of the support beam (4); The first turntable (8) is fixedly mounted on the lower end of the rotating rod (7), the rotating rod (7) is connected to the center of the first turntable (8), a first connecting column is fixedly provided at the lower end of the first turntable (8) away from the center, and one end of the support beam (4) corresponding to the rotating rod (7) is hinged to the first connecting column.

3. A soil sampling screening device as claimed in claim 2, characterized in that: The vibration mechanism comprises an impact rod (21), an impact head (22), a push rod and a lifting mechanism; One end of the impact rod (21) is hinged to the support frame (1), and the impact head (22) is installed on the other end of the impact rod (21) and is located above the screen cover (17); The lower end of the impact rod (21) is provided with a push rod (23) vertically mounted on the support frame (1); the push rod (23) is connected to a lifting mechanism and slides vertically on the support frame (1); the upper end of the push rod (23) is loosely connected to the lower end of the impact rod (21) and is used to lift the impact rod (21) for rotation.

4. A soil sampling screening device as claimed in claim 3, characterized in that: The lifting mechanism comprises a cylinder (25) vertically mounted on the support frame (1), and a telescopic rod of the cylinder (25) is fixedly connected upward to the lower end of the push rod (23).

5. A soil sampling screening device as claimed in claim 3, characterized in that: The number of the sieve frames (16) is at least two, and at least two sieve frames (16) are stacked and connected in a vertical direction. The sieve frame (16) located at the lower end is installed on the upper end of the bottom basin (15), and the sieve frame (16) located at the upper end is connected to the sieve cover (17). The sieve holes (27) of at least two of the sieve frames (16) have different sizes, and at least two sieve frames (16) are distributed and connected from top to bottom according to the size of their sieve holes (27) from large to small.

6. A soil sampling screening device as claimed in claim 5, characterized in that: The side of the sieve cover (17) is fixedly connected with two connecting parts (18) corresponding to the rotating rod (7) and the limiting rod (5) respectively, wherein one of the connecting parts (18) is vertically penetrated by a second strip-shaped through hole matching the limiting rod (5), the limiting rod (5) is arranged through the second strip-shaped through hole, and the limiting rod (5) is fixedly provided with a second supporting block (19) supported on the lower end of the connecting part (18); a second rotating disk (20) is fixedly installed on the upper end of the rotating rod (7), the upper end of the rotating rod (7) is connected to the center of the second rotating disk (20), and the upper end of the second rotating disk (20) is provided with a second connecting column located on the same vertical line as the first connecting column, wherein the other connecting part (18) is hinged to the second connecting column.

7. A soil sampling screening device as claimed in claim 6, characterized in that: The lower ends of the two connecting parts (18) are respectively fixedly connected with vertically arranged connecting rods (13), and the lower ends of the connecting rods (13) are fixedly installed on the support beam (4). A support cross bar (3) is provided between the two connecting rods (13). The two ends of the support cross bar (3) are respectively provided with vertically penetrating sliding holes, and the sliding holes match the connecting rods (13). The two ends of the support cross bar (3) are respectively sleeved on the two connecting rods (13) through two sliding holes to slide vertically. The side of the support cross bar (3) is provided with a threaded hole connected with the sliding hole, and the threaded hole is matched with an upper bolt (14) that is screwed against the connecting rod (13). The load-bearing plate (2) is fixedly installed on the upper end of the support cross bar.

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