A soil milling device

Abstract

This invention relates to a soil grinding device. It addresses the problems of time-consuming, labor-intensive, and inefficient soil sample grinding in existing methods. The device features a simple structure with an adjustable distance between the lower surface of the grinding plate and the upper surface of the grinding disc. After the soil sample is fed into the hopper, driven by a reduction motor and a transmission shaft, large soil clods are ground into smaller clods between a conical hopper section and a conical roller section. The smaller clods are then dispersed between a hollow cylindrical roller section and a straight pipe section, and between the grinding plate and the grinding disc. This allows for the grinding of soil samples to different finenesses according to the requirements of soil analysis, reducing the labor intensity of testing personnel and improving grinding efficiency. This invention belongs to the field of soil grinding technology.

Description

Technical Field

[0001] This utility model relates to a grinding device, specifically a soil grinding device, and belongs to the field of soil grinding technology. Background Technology

[0002] Analyzing soil to determine its organic matter and nutrient content is beneficial for understanding the current state of the soil and any existing problems. Therefore, soil analysis is essential in agricultural and forestry production processes.

[0003] The current soil analysis process generally includes on-site sampling, air drying or oven drying, grinding, and sieving. In particular, the grinding process requires the soil to be placed on a rubber board and ground with a wooden roller before sieving. For large soil clods, especially for hard soil samples after drying, it is necessary to use a soil crusher (such as a wooden hammer) to break the soil clods before grinding. The whole process is time-consuming, labor-intensive, and inefficient, causing great inconvenience to the staff. Secondly, dust is easily generated during the crushing and grinding process, which affects the air quality and hygiene of the laboratory.

[0004] In summary, how to propose a grinding device to address the aforementioned technical problems has become a pressing issue for those skilled in the art. Utility Model Content

[0005] This invention addresses the shortcomings of the prior art by providing a soil grinding device.

[0006] The technical solution of this utility model is: a soil grinding device, including a grinding frame, a hollow grinding roller, a feed hopper, a reduction motor and a transmission shaft.

[0007] The feed hopper is coaxially inserted into the mill frame, and the mill frame has a discharge hole with a discharge plate inserted inside.

[0008] The hollow grinding rollers are coaxially arranged inside the feed hopper, and the hollow grinding rollers are threadedly connected to the drive shaft.

[0009] Several grinding plates are fixed to the outer wall of the hollow grinding roller in a circumferential array.

[0010] The geared motor is coaxially mounted below the mill frame, and the rotor of the geared motor is coaxially fixed to the drive shaft.

[0011] The top of the drive shaft is integrally provided with a screwing part, and a locking nut is installed on the drive shaft. The locking nut is arranged on the upper surface of the hollow grinding roller.

[0012] Furthermore, the hollow grinding roller includes a cap, a conical roller segment, and a hollow cylindrical roller segment that are coaxially fixed together in sequence.

[0013] The outer surfaces of both the conical roller segment and the hollow cylindrical roller segment are provided with anti-slip stripes. The cover is threadedly connected to the drive shaft, and the locking nut is arranged on the upper surface of the cover. The grinding plate is fixed to the outer wall of the hollow cylindrical roller segment.

[0014] Furthermore, the mill frame includes a mill disc, a support frame, and a dust guard ring.

[0015] The grinding disc has a discharge hole, and the discharge plate is inserted into the discharge hole and connected to the grinding disc by screws.

[0016] The dustproof ring is integrally set on the upper surface of the grinding disc, and the outer diameter of the dustproof ring is equal to the inner diameter of the hollow cylindrical roller segment.

[0017] The bracket is integrally set on the lower surface of the grinding disc, and the geared motor is arranged inside the bracket. The geared motor is coaxially mounted on the lower surface of the grinding disc by screws.

[0018] Furthermore, it also includes a dust cover, which is placed over the feed hopper.

[0019] Furthermore, the feed hopper includes a conical hopper section and a straight pipe section that are coaxially fixed together in sequence; the straight pipe section is coaxially inserted into the grinding disc and is connected to the grinding disc by screws.

[0020] Furthermore, the grinding plate is an arc-shaped grinding plate, with its lower surface flush with the lower surface of the hollow cylindrical roller section, and the radius of the outer arc surface of the grinding plate equal to the inner diameter of the straight pipe section.

[0021] Compared with the prior art, this utility model has the following advantages:

[0022] 1. This utility model has a simple structure. The distance between the lower surface of the grinding plate 210 and the upper surface of the grinding disc 130 is adjustable. After the soil sample is put into the feed hopper 300, under the drive of the reduction motor 400 and the transmission shaft 500, the large soil particles are crushed into small soil particles between the conical hopper section 320 and the conical roller section 230. The small soil particles are then crushed between the hollow cylindrical roller section 240 and the straight pipe section 330, and between the grinding plate 210 and the grinding disc 130. It can grind the soil sample into different finenesses according to the requirements of soil analysis, reduce the labor intensity of the test personnel, and improve the grinding efficiency.

[0023] 2. The feed hopper 300 of this utility model is equipped with a dust cover 310 to reduce dust during the grinding process and avoid affecting the air quality and hygiene of the laboratory.

[0024] 3. This utility model is small in size and compact in structure. The power unit and the grinding unit are both located inside the grinding frame 100, which reduces space occupation. Attached Figure Description

[0025] Figure 1 This is an isometric drawing of this utility model;

[0026] Figure 2 This is an isometric view of the mill frame 100 in this utility model;

[0027] Figure 3 This is a schematic diagram of the hollow grinding roller 200, the geared motor 400, and the transmission shaft 500 in this utility model.

[0028] Figure 4 This is a cross-sectional view of the present invention.

[0029] In the diagram: 100, mill frame; 110, discharge hole; 120, discharge plate; 130, grinding disc; 140, support; 150, dust ring; 200, hollow grinding roller; 210, grinding plate; 220, cover; 230, conical roller section; 240, hollow cylindrical roller section; 300, feed hopper; 310, dust cover; 320, conical hopper section; 330, straight pipe section; 400, geared motor; 410, coupling; 500, drive shaft; 510, lock nut; 520, tightening part. Detailed Implementation

[0030] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0031] Specific implementation method one: Combining Figures 1 to 4 This embodiment describes a soil grinding device. It includes a grinding frame 100, a hollow grinding roller 200, a feed hopper 300, a dust cover 310, a geared motor 400, and a drive shaft 500.

[0032] The feed hopper 300 is coaxially inserted on the mill frame 100. The mill frame 100 has a discharge hole 110, and a discharge plate 120 is inserted into the discharge hole 110.

[0033] The dust cover 310 covers the feed hopper 300, the hollow grinding roller 200 is coaxially arranged inside the feed hopper 300, and the hollow grinding roller 200 is threadedly connected to the drive shaft 500.

[0034] Several grinding plates 210 are fixed to the outer wall of the hollow grinding roller 200 in a circumferential array.

[0035] The geared motor 400 is coaxially mounted below the mill frame 100, and the rotor of the geared motor 400 is coaxially fixed to the drive shaft 500; preferably, the rotor of the geared motor 400 is connected to the drive shaft 500 through a coupling 410.

[0036] The top of the drive shaft 500 is integrally provided with a screwing part 520, preferably, the screwing part 520 is hexagonal prism.

[0037] A locking nut 510 is installed on the drive shaft 500, and the locking nut 510 is arranged on the upper surface of the hollow grinding roller 200.

[0038] Specific Implementation Method Two: Combining Figures 1 to 4 This embodiment describes a hollow grinding roller 200, which includes a cover 220, a conical roller segment 230, and a hollow cylindrical roller segment 240 that are coaxially fixed together in sequence.

[0039] The outer surfaces of the conical roller section 230 and the hollow cylindrical roller section 240 are provided with anti-slip stripes. The cover 220 is threadedly connected to the drive shaft 500, and the locking nut 510 is arranged on the upper surface of the cover 220. The grinding plate 210 is fixed to the outer wall of the hollow cylindrical roller section 240.

[0040] The other components and connections are the same as in Specific Implementation Method 1.

[0041] Specific implementation method three: Combining Figures 1 to 4 This embodiment describes a grinding mill frame 100 that includes a grinding disc 130, a support 140, and a dustproof ring 150.

[0042] The grinding disc 130 has a discharge hole 110. The discharge plate 120 is inserted into the discharge hole 110 and then connected to the grinding disc 130 by screws.

[0043] The dustproof ring 150 is integrally set on the upper surface of the grinding disc 130, and the outer diameter of the dustproof ring 150 is equal to the inner diameter of the hollow cylindrical roller segment 240.

[0044] The bracket 140 is integrally set on the lower surface of the grinding disc 130, and the geared motor 400 is arranged inside the bracket 140. The geared motor 400 is coaxially mounted on the lower surface of the grinding disc 130 by screws.

[0045] The other components and connections are the same as in specific implementation method one or two.

[0046] Specific implementation method four: Combination Figures 1 to 4 This embodiment describes a feeding hopper 300 comprising a conical hopper section 320 and a straight pipe section 330 coaxially fixed together. The straight pipe section 330 is coaxially inserted into the grinding disc 130 and connected to the grinding disc 130 by screws. Other components and connections are the same as in specific embodiments one, two, or three.

[0047] Specific Implementation Method Five: Combining Figures 1 to 4In this embodiment, the grinding plate 210 is an arc-shaped grinding plate. The lower surface of the grinding plate 210 is flush with the lower surface of the hollow cylindrical roller section 240, and the radius of the outer arc surface of the grinding plate 210 is equal to the inner diameter of the straight pipe section 330. Other components and connections are the same as in specific embodiments one, two, three, or four.

[0048] Working principle

[0049] Combination Figures 1 to 4 To explain the working principle of this utility model, the following steps should be followed when performing the grinding:

[0050] Step 1: Adjust the equipment

[0051] The distance between the lower surface of the grinding plate 210 and the upper surface of the grinding disc 130 is adjustable. The adjustment process is as follows:

[0052] First, clamp the screwing part 520 with a wrench, then loosen the locking nut 510, and then screw the hollow grinding roller 200 to adjust its position on the drive shaft 500. Before grinding the soil, adjust the distance between the grinding plate 210 and the grinding disc 130 according to the required coarseness of the soil sample for analysis.

[0053] Step 2: Feeding and compacting the soil

[0054] After being air-dried or oven-dried, the soil sample is fed into the hopper 300. Driven by the geared motor 400 and the drive shaft 500, the large soil particles are crushed into small soil particles between the conical hopper section 320 and the conical roller section 230. The small soil particles are then crushed between the hollow cylindrical roller section 240 and the straight pipe section 330, and between the grinding plate 210 and the grinding disc 130.

[0055] Step 3: Stop the machine and take samples

[0056] Stop the geared motor at 400, remove the discharge plate 120, and take a sample through the discharge hole 110 for sieving.

[0057] If the required fineness for analysis is achieved, the geared motor 400 is started, and all the soil samples are discharged from the discharge hole 110 under the drive of the grinding plate 210.

[0058] If the required fineness for analysis is not achieved, reinstall the discharge plate 120, increase the grinding time of the soil sample, or reduce the distance between the grinding plate 210 and the grinding disc 130 until the fineness of the soil sample meets the requirements.

[0059] The present invention has been disclosed above with reference to preferred embodiments, but it is not intended to limit the present invention. Any simple modifications, equivalent changes and alterations made by those skilled in the art to the above embodiments without departing from the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A soil grinding device, characterized in that: It includes a mill frame (100), a hollow mill roller (200), a feed hopper (300), a geared motor (400), and a drive shaft (500). The feed hopper (300) is coaxially inserted on the mill frame (100), and the mill frame (100) has a discharge hole (110) with a discharge plate (120) inserted in the discharge hole (110). The hollow grinding roller (200) is coaxially arranged inside the feed hopper (300), and the hollow grinding roller (200) is threadedly connected to the drive shaft (500); Several grinding plates (210) are fixed to the outer wall of the hollow grinding roller (200) in a circumferential array. The geared motor (400) is coaxially mounted below the mill frame (100), and the rotor of the geared motor (400) is coaxially fixed to the transmission shaft (500); The top of the drive shaft (500) is integrally provided with a screwing part (520), and a locking nut (510) is installed on the drive shaft (500). The locking nut (510) is arranged on the upper surface of the hollow grinding roller (200).

2. The soil grinding device according to claim 1, characterized in that: The hollow grinding roller (200) includes a cover (220), a conical roller segment (230) and a hollow cylindrical roller segment (240) that are coaxially fixed together in sequence. The outer surfaces of the conical roller segment (230) and the hollow cylindrical roller segment (240) are provided with anti-slip stripes. The cover (220) is threadedly connected to the drive shaft (500), and the locking nut (510) is arranged on the upper surface of the cover (220). The grinding plate (210) is fixed to the outer wall of the hollow cylindrical roller segment (240).

3. A soil grinding device according to claim 2, characterized in that: The mill frame (100) includes a mill disc (130), a support (140), and a dust ring (150). The grinding disc (130) has a discharge hole (110), and the discharge plate (120) is inserted into the discharge hole (110) and connected to the grinding disc (130) by screws; The dust ring (150) is integrally set on the upper surface of the grinding disc (130), and the outer diameter of the dust ring (150) is equal to the inner diameter of the hollow cylindrical roller segment (240); The bracket (140) is integrally set on the lower surface of the grinding disc (130), the geared motor (400) is arranged inside the bracket (140), and the geared motor (400) is coaxially mounted on the lower surface of the grinding disc (130) by screws.

4. A soil grinding device according to claim 3, characterized in that: It also includes a dust cover (310) that covers the feed hopper (300).

5. A soil grinding device according to claim 4, characterized in that: The feed hopper (300) includes a conical bucket section (320) and a straight pipe section (330) that are coaxially fixed together in sequence; the straight pipe section (330) is coaxially inserted on the grinding disc (130), and the straight pipe section (330) is connected to the grinding disc (130) by screws.

6. A soil grinding device according to claim 5, characterized in that: The grinding plate (210) is an arc-shaped grinding plate. The lower surface of the grinding plate (210) is flush with the lower surface of the hollow cylindrical roller section (240). The radius of the outer arc surface of the grinding plate (210) is equal to the inner diameter of the straight pipe section (330).

7. A soil grinding device according to claim 6, characterized in that: The screwing part (520) is hexagonal prism.

8. A soil grinding device according to claim 7, characterized in that: The rotor of the geared motor (400) is connected to the drive shaft (500) via a coupling (410).

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