A soil testing and sampling pretreatment device
Patent Information
- Application Number
- CN202521771094.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-20
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-08-20
AI Technical Summary
[0004]本实用新型的目的是为了解决传统土壤预处理依赖人工操作进行挑拣杂质、自然晾晒、研磨、筛网筛分等，效率低下，且导致样品粒度差异大，筛分过程中人为弃留杂质的标准不统一，直接影响检测数据的重复性的问题，而提出的一种土壤检测采样预处理装置
1、本实用新型中，通过料筒作为研磨腔体配合锥形螺旋研磨头形成渐变间隙，通过挤压、剪切作用将土壤团块破碎，解决传统研磨粒度不均的问题，排料孔均匀分布在料筒底面，仅允许达标粒度的样品排出，实现边研磨边筛选的连续化处理，实现土壤样品的自动化破碎，提升研磨效率和粒度均匀性，为后续筛分提供标准化原料。
Smart Images
Figure CN224707752U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of soil sampling and processing technology, and in particular to a soil testing and sampling pretreatment device. Background Technology
[0002] Soil is a core element of the ecological environment, and its quality is directly related to the safety of agricultural products, water resource protection, and human health. With the acceleration of industrialization and urbanization, soil pollution problems are becoming increasingly prominent. Problems such as excessive heavy metals, pesticide residues, and organic pollution pose a serious threat to the ecosystem. Therefore, soil testing has become a key link in environmental protection, agricultural production, and land management.
[0003] However, in existing technologies, traditional soil pretreatment relies on manual operations such as picking out impurities, natural drying, grinding, and sieving, which is inefficient and leads to large differences in sample particle size. The standards for discarding impurities during the sieving process are not uniform, which directly affects the repeatability of test data. Utility Model Content
[0004] The purpose of this invention is to solve the problems of low efficiency and large differences in sample particle size caused by the reliance on manual operation for traditional soil pretreatment, such as picking impurities, natural drying, grinding, and sieving. The inconsistent standards for discarding impurities during sieving directly affect the repeatability of test data. Therefore, a soil testing sampling pretreatment device is proposed.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a soil testing sampling pretreatment device, comprising a feeding hopper, a grinding mechanism installed at the bottom of the feeding hopper, a receiving tray magnetically connected to the bottom surface of the grinding mechanism, and multiple sets of spliced screening trays installed on the bottom surface of the receiving tray. The grinding mechanism includes a material cylinder, an end cap, a feeding pipe, a discharge hole, and a conical spiral grinding head. The discharge hole is opened through the bottom surface of the material cylinder. A motor is installed at one end of the material cylinder. The end cap is threaded onto the outer wall of the other end of the material cylinder. The conical spiral grinding head is rotatably connected to the inner wall of the material cylinder. The output shaft end of the motor is fixedly connected to the end of the conical spiral grinding head. The feeding pipe is fixedly connected to the top surface of the material cylinder, and the top end of the feeding pipe is fixedly connected to the bottom end of the feeding hopper.
[0006] Preferably, a guide plate is fixedly connected to the inner wall of the feed hopper, and a magnetic separator is embedded in the inside of the guide plate.
[0007] Preferably, a magnetic block is fixedly connected to the inner wall of the receiving tray, the magnetic block is magnetically connected to the outer wall of the material cylinder, and a screen plate is fixedly connected to the inner wall of the receiving tray.
[0008] Preferably, the bottom surface of the receiving tray has a slot, and an insert plate is inserted into the inner wall of the slot.
[0009] Preferably, the bottom surface of the insert plate is fixedly connected to the top surface of the sieve tray, and the bottom surface of the sieve tray is provided with a second slot.
[0010] Preferably, a second sieve plate is fixedly connected to the inner wall of the sieve tray.
[0011] Preferably, an electronic controller is fixedly connected to the bottom surface of the motor.
[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, a grinding cylinder is used as the grinding chamber, which is combined with a conical spiral grinding head to form a gradual gap. Soil clumps are broken up by squeezing and shearing, solving the problem of uneven particle size in traditional grinding. The discharge holes are evenly distributed on the bottom surface of the grinding cylinder, allowing only samples that meet the particle size standard to be discharged, realizing continuous processing of grinding and screening at the same time, realizing automated crushing of soil samples, improving grinding efficiency and particle size uniformity, and providing standardized raw materials for subsequent screening.
[0013] 2. In this utility model, the sample particles after grinding are initially intercepted by the sieve plate in the receiving tray. The impurities are easily cleaned by the quick disassembly function of the magnetic block. The sieve tray is spliced with the slot of the receiving tray by the insert plate. The number can be increased or decreased according to the testing requirements. The sieve plate in each set of sieve trays adopts a different mesh size to achieve multi-stage sieving and meet the particle size requirements of different testing items. Attached Figure Description
[0014] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a soil testing and sampling pretreatment device; Figure 2 This utility model provides a schematic diagram of the internal structure of a soil testing and sampling pretreatment device; Figure 3 This utility model provides a schematic diagram of the internal structure of the material cylinder of a soil testing and sampling pretreatment device; Figure 4 This utility model presents a schematic diagram of the internal structure of the feed hopper of a soil testing sampling pretreatment device.
[0015] Legend: 1. Feed hopper; 11. Guide plate; 12. Magnetic separation plate; 2. Grinding mechanism; 21. Material cylinder; 22. End cap; 23. Feed pipe; 24. Discharge hole; 25. Conical spiral grinding head; 3. Motor; 31. Electronic controller; 4. Receiving tray; 41. Magnetic block; 42. Slot one; 43. Screen plate one; 5. Screening tray; 51. Insert plate; 52. Slot two; 53. Screen plate two. Detailed Implementation
[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein, and therefore the present invention is not limited to the specific embodiments disclosed in the following specification.
[0018] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a soil testing sampling pretreatment device, including a feeding hopper 1, a grinding mechanism 2 installed at the bottom of the feeding hopper 1, a receiving tray 4 magnetically connected to the bottom surface of the grinding mechanism 2, and multiple sets of spliced screening trays 5 installed on the bottom surface of the receiving tray 4. The grinding mechanism 2 includes a material cylinder 21, an end cap 22, a feeding pipe 23, a discharge hole 24, and a conical spiral grinding head 25. The discharge hole 24 is opened through the bottom surface of the material cylinder 21. A motor 3 is installed at one end of the material cylinder 21. The end cap 22 is threaded onto the outer wall of the other end of the material cylinder 21. The conical spiral grinding head 25 is rotatably connected to the inner wall of the material cylinder 21. The output shaft end of the motor 3 is fixedly connected to the end of the conical spiral grinding head 25. The feeding pipe 23 is fixedly connected to the top surface of the material cylinder 21. The top end of the feeding pipe 23 is fixedly connected to the bottom end of the feeding hopper 1. An electronic controller 31 is fixedly connected to the bottom surface of the motor 3.
[0019] The specific settings and functions of this embodiment are described below. Soil samples are guided to fall into the feed pipe 23 through the feed hopper 1. The feed pipe 23 serves as a connecting channel, accurately guiding the samples into the grinding chamber inside the material cylinder 21. The material cylinder 21, as the grinding chamber, works with the conical spiral grinding head 25 to form a gradual gap. Through compression and shearing, the soil clumps are broken up, solving the problem of uneven particle size in traditional grinding. The discharge holes 24 are evenly distributed on the bottom surface of the material cylinder 21, allowing only samples that meet the particle size standard to be discharged, realizing continuous processing of grinding and screening simultaneously. This achieves automated crushing of soil samples, improves grinding efficiency and particle size uniformity, and provides standardized raw materials for subsequent screening. The receiving tray 4 is connected to the material cylinder 21 by magnetic attraction, facilitating quick disassembly and cleaning.
[0020] Example 2: Figure 1 - Figure 4As shown, a guide plate 11 is fixedly connected to the inner wall of the feed hopper 1, and a magnetic separator 12 is embedded inside the guide plate 11. A magnetic block 41 is fixedly connected to the inner side wall of the receiving tray 4. The magnetic block 41 is magnetically connected to the outer wall of the material cylinder 21. A screen plate 43 is fixedly connected to the inner wall of the receiving tray 4. A slot 42 is provided on the bottom surface of the receiving tray 4. An insert plate 51 is inserted into the inner wall of the slot 42. The bottom surface of the insert plate 51 is fixedly connected to the top surface of the screening tray 5. A slot 52 is provided on the bottom surface of the screening tray 5. A screen plate 53 is fixedly connected to the inner wall of the screening tray 5.
[0021] The overall effect of this embodiment is that the guide plate 11 is tilted at 45° to guide the sample flow through the magnetic separation plate 12. The magnetic separation plate 12 has a built-in neodymium iron boron strong magnet with a magnetic field strength of 1500 gauss, which can adsorb metal impurities such as iron nails and iron filings mixed in the soil. The sieve plate 43 in the receiving tray 4 can initially intercept the coarse particles after grinding. The quick disassembly function of the magnetic block 41 makes it easy to clean impurities. The sieve tray 5 is spliced with the slot 42 of the receiving tray 4 through the insert plate 51. The number can be increased or decreased according to the detection needs. The sieve plate 53 in each set of sieve trays 5 adopts a different mesh size to achieve multi-stage sieving and meet the particle size requirements of different detection items. The design of the slot 52 allows the sieve trays 5 to be stacked, reducing the overall volume of the device and improving portability.
[0022] The device's operation and working principle are as follows: Through an integrated process of pretreatment, grinding, and grading, the discrete steps of traditional manual operation are integrated into a continuous operation. The core utilizes the gradual gap between the conical spiral grinding head 25 and the material cylinder 21 to achieve directional crushing. Combined with the removal of metal impurities by the magnetic separation plate 12, the interception of coarse particles by the sieve plate 43, and the multi-stage sieving by the sieve disc 5, the device ensures uniform sample particle size and thorough removal of impurities.
[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A soil testing and sampling pretreatment device, comprising a feed hopper (1), characterized in that: The bottom end of the feed hopper (1) is equipped with a grinding mechanism (2). The bottom surface of the grinding mechanism (2) is magnetically connected to a receiving tray (4). The bottom surface of the receiving tray (4) is equipped with multiple sets of spliced screening trays (5). The grinding mechanism (2) includes a material cylinder (21), an end cap (22), a feed pipe (23), a discharge hole (24), and a conical spiral grinding head (25). The discharge hole (24) is opened through the bottom surface of the material cylinder (21). A motor (3) is installed at one end of the material cylinder (21). The end cap (22) is threaded onto the outer wall of the other end of the material cylinder (21). The conical spiral grinding head (25) is rotatably connected to the inner wall of the material cylinder (21). The output shaft end of the motor (3) is fixedly connected to the end of the conical spiral grinding head (25). The feed pipe (23) is fixedly connected to the top surface of the material cylinder (21). The top end of the feed pipe (23) is fixedly connected to the bottom end of the feed hopper (1).
2. The soil testing and sampling pretreatment device according to claim 1, characterized in that: The inner wall of the feed hopper (1) is fixedly connected to a guide plate (11), and a magnetic separator (12) is embedded inside the guide plate (11).
3. The soil testing and sampling pretreatment device according to claim 1, characterized in that: A magnetic block (41) is fixedly connected to the inner wall of the receiving tray (4), and the magnetic block (41) is magnetically connected to the outer wall of the material cylinder (21). A screen plate (43) is fixedly connected to the inner wall of the receiving tray (4).
4. The soil testing sampling pretreatment device according to claim 3, characterized in that: The bottom surface of the receiving tray (4) is provided with a slot 1 (42), and a plug plate (51) is inserted into the inner wall of the slot 1 (42).
5. The soil testing and sampling pretreatment device according to claim 4, characterized in that: The bottom surface of the insert plate (51) is fixedly connected to the top surface of the sieve tray (5), and the bottom surface of the sieve tray (5) is provided with a slot two (52).
6. The soil testing sampling pretreatment device according to claim 5, characterized in that: The inner wall of the screening tray (5) is fixedly connected to a second screening plate (53).
7. The soil testing sampling pretreatment device according to claim 1, characterized in that: An electronic controller (31) is fixedly connected to the bottom surface of the motor (3).