Soil screening device for environmental soil detection

Abstract

The utility model belongs to the field of soil detection and treatment, and particularly discloses a soil screening device for environmental soil detection, which comprises a support and a screening tray arranged on the support, the screening tray is slidably connected to the support along the vertical direction, a vibration motor is fixedly connected to the screening tray, and a receiving hopper is arranged on the support below the screening tray. A spring is arranged between the sieve tray and the receiving hopper; a stirring assembly extending into the sieve tray is arranged above the sieve tray, soil in the sieve tray is stirred and scraped through the stirring assembly, the soil in the sieve tray can be better stirred and smashed, meanwhile, soil particles on the inner side wall of the sieve tray can be scraped, sieve holes of the sieve tray are prevented from being blocked by the soil particles, and the sieving efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of soil detection and processing, and in particular relates to a soil screening device for environmental soil detection. Background Art

[0002] Environmental soil testing is an important measure to understand the status of soil environmental quality, and its main purpose is to prevent and control soil pollution hazards. According to the monitoring purpose and regional environmental conditions, determine the appropriate sampling points. The distribution of sampling points should be as uniform as possible, or sampling should be carried out according to different areas divided by the plot, so as to comprehensively monitor the soil quality. After collecting the soil samples, they need to be screened according to their particle size.

[0003] At present, the most commonly used screening method is to vibrate and screen the soil particles in the sieve plate. However, due to the presence of a certain amount of moisture in the soil particles, some soil particles are internally bonded, and larger soil particles are easily blocked on the leakage holes of the sieve plate. Therefore, in order to solve the above problem, in the prior art, there is a screening device that has a stirring rod in the sieve plate to stir and crush larger soil particles while screening.

[0004] However, the stirring rods in the existing screening devices with stirring function are mostly straight-shaped and cover the diameter of the sieve plate. During the rotation and stirring process, the stirring rods are likely to push the soil particles accumulated in the sieve plate to move, but cannot crush or crush them. At the same time, the soil particles are likely to be contaminated on the inner wall of the sieve plate, which is inconvenient to clean, resulting in low screening efficiency. Utility Model Content

[0005] In order to solve the above problems, the utility model proposes a soil screening device for environmental soil detection. On the basis of vibration screening, a stirring component is arranged in the sieve plate, which can better stir and crush the soil in the sieve plate, and at the same time scrape the soil particles on the side wall of the sieve plate, thereby preventing the soil particles from blocking the sieve holes of the sieve plate and improving the screening efficiency.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a soil screening device for environmental soil detection, comprising a bracket and a sieve plate arranged on the bracket, the sieve plate is slidably connected to the bracket along the vertical direction, a vibration motor is also fixedly connected to the sieve plate, a material receiving hopper is arranged on the bracket at the lower part of the sieve plate, and a spring is arranged between the sieve plate and the material receiving hopper; a stirring assembly extending into the sieve plate is arranged above the sieve plate;

[0007] The stirring assembly includes a circular disc rotatably connected to the top of the bracket, a through hole is provided in the center of the circular disc, a central axis fixedly installed on the bracket passes through the through hole, a central gear is fixedly installed below the central axis, and a first gear and a second gear are provided on the circular disc to mesh with the central gear; the rotation of the circular disc can drive the first gear and the second gear to rotate, and the first gear and the second gear mesh with the central gear to rotate; the first gear and the second gear shafts are fixedly connected with a stirring shaft extending into the sieve plate, and the circular disc is provided with a scraper rod extending downward close to the inner wall of the sieve plate.

[0008] Preferably, a stirring head with a straight-line structure is installed below the stirring shaft, and when the first gear and the second gear rotate, the stirring head can cover the bottom of the sieve plate and rotate.

[0009] Preferably, a scraper head extending in the vertical direction is installed below the scraper rod, and when the disc rotates, the scraper head can be driven to rotate close to the inner wall of the sieve disc.

[0010] Beneficial effects of the utility model:

[0011] Compared with the prior art, the utility model is based on the vibration screening. When the stirring shaft of the stirring assembly follows the circular disc, it can also realize self-rotation through the meshing movement of the star gear, so as to realize the full coverage of the bottom of the sieve disc by the stirring head of the stirring shaft. At the same time, the two stirring heads rotate separately, so that a stirring and striking space is formed between the two stirring heads, so as to better stir and crush the soil in the sieve disc, and at the same time, the soil at the bottom of the sieve disc can be scraped to avoid the granular soil blocking the sieve holes of the sieve disc. A scraping rod is also provided on the disc. When the disc rotates, the scraping head of the scraping rod can rotate along the side wall of the sieve disc, scrape the soil particles on the side wall, and make the soil particles fall to the bottom of the sieve disc to continue to be stirred and screened, so as to improve the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of the soil screening device in the embodiment;

[0013] Figure 2 It is a front view structural schematic diagram of the soil screening device in the embodiment;

[0014] Figure 3 Schematic diagram of the stirring assembly of the soil screening device in the embodiment Figure 1 ;

[0015] Figure 4 Schematic diagram of the stirring assembly of the soil screening device in the embodiment Figure 2 .

[0016] In the accompanying drawings, the structural names represented by the reference numerals are:

[0017] 1- bracket, 101- guide rod, 102- spring, 103- upper support plate, 1031- arch plate, 104- lower support plate, 2- receiving hopper, 3- sieve plate, 4- stirring assembly, 401- disc, 4010- through hole, 4011- pulley, 4012- first gear, 4013- second gear, 4014- stirring shaft, 4015- stirring head, 4016- scraper rod, 4017- scraper head, 402- middle shaft, 4021- center gear, 5- motor, 6- belt, 7- vibration motor. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate understanding by technicians. Example

[0019] See also Figures 1 to 4 The figure shows a soil screening device for environmental soil detection, including a bracket 1, a receiving hopper 2 is fixedly mounted on the bracket 1, a sieve plate 3 is arranged above the receiving hopper 2, the sieve plate 3 is a cylindrical structure with a leak hole on the bottom surface, and the receiving hopper 2 is used to receive the soil particles falling from the sieve plate 3 and collect the soil particles in one place for discharge. The sieve plate 3 is slidably connected to the bracket 1 in the vertical direction, and a vibration motor 7 is also fixedly connected to the sieve plate 3, and a spring 102 is arranged between the sieve plate 3 and the receiving hopper 2. Specifically, an upper support plate 103 and a lower support plate 104 are arranged on the bracket 1, and the receiving hopper 2 is mounted on the lower support plate 104, and the upper support plate 103 and the lower support plate 104 are fixedly connected through a guide rod 101. The sieve plate 3 is slidably connected to the guide rod 101 through a plate body, and the spring 102 is penetrated on the outside of the guide rod 101, and can contact the bottom plate of the sieve plate 3 and the support plate (lower support plate 104) of the receiving hopper 2, and is used to support the sieve plate 3. The vibration motor 7 is installed on the bottom plate of the sieve plate 3. When the vibration motor 7 is started, the sieve plate 3 can be driven to vibrate up and down to sieve soil particles.

[0020] A stirring assembly 4 extending into the sieve plate 3 is provided above the sieve plate 3. The stirring assembly 4 includes a disc 401 rotatably connected to the bracket 1, specifically rotatably connected to the upper support plate 103 of the bracket 1. A through hole 4010 is provided at the center of the disc 401. A central shaft 402 fixedly installed on the bracket 1 is passed through the through hole 4010, that is, as shown in the figure, the central shaft 402 is fixedly installed on the arch plate 1031 provided on the upper support plate 103. A central gear 4021 is fixedly installed below the central shaft 402. A first gear 4012 and a second gear 4013 are provided on the disc 401 to mesh with the central gear 4021. The gear shafts of the first gear 4012 and the second gear 4013 are rotatably connected to the disc 401. When the disc 401 rotates, the first gear 4012 and the second gear 4013 can be driven to rotate. At the same time, the first gear 4012 and the second gear 4013 mesh with the central gear to rotate, so as to form a star gear transmission structure to improve the stirring effect and the scraping area.

[0021] The first gear 4012 and the second gear 4013 are both fixedly connected to the rotating shaft with a stirring shaft 4014 extending into the sieve plate 3, and the disc 401 is provided with a scraper 4016 extending downward close to the inner side wall of the sieve plate 3. A stirring head 4015 with a straight-line structure is installed below the stirring shaft 4014. When the first gear 4012 and the second gear 4013 rotate, the stirring head 4015 can cover the bottom of the sieve plate 3 and rotate, and a stirring and striking space is formed between the two stirring heads 4015, so as to better stir and crush the soil in the sieve plate 3, so that the soil particles are screened out faster, and at the same time, the larger soil particles that are blocked on the sieve holes at the bottom of the crushed sieve plate 3 can be scraped. A scraper 4017 extending in the vertical direction is installed below the scraper 4016. When the disc 401 rotates, the scraper 4017 can be driven to rotate close to the inner side wall of the sieve plate 3 to scrape the soil particles adhering to the inner side wall of the sieve plate 3.

[0022] Furthermore, a pulley 4011 is provided on the disc 401, and a motor 5 is provided on the upper support plate 103. The motor 5 drives the disc 401 to rotate through a belt 6 to achieve stirring and scraping effects.

[0023] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all details in detail, nor do they limit the utility model to only the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification.

Claims

1. A soil screening device for environmental soil detection, comprising a support (1) and a sieve plate (3) arranged on the support (1), characterized in that: The sieve plate (3) is slidably connected to the bracket (1) in the vertical direction. The sieve plate (3) is also fixedly connected to a vibration motor (7). A material receiving hopper (2) is provided on the bracket (1) below the sieve plate (3). A spring (102) is provided between the sieve plate (3) and the material receiving hopper (2). A stirring assembly (4) extending into the sieve plate (3) is provided above the sieve plate (3). The stirring assembly (4) comprises a disc (401) rotatably connected to the top of the bracket (1). A through hole (4010) is provided at the center of the disc (401). The through hole (4010) A central shaft (402) is fixedly mounted on the bracket (1) and passes through the central shaft (402). A central gear (4021) is fixedly mounted below the central shaft (402). A first gear (4012) and a second gear (4013) are provided on the disc (401) and mesh with the central gear (4021). A stirring shaft (4014) extending into the sieve disc (3) is fixedly connected to the rotating shafts of the first gear (4012) and the second gear (4013). A scraper rod (4016) is provided on the disc (401) and extends downward close to the inner wall of the sieve disc (3).

2. The soil screening device for environmental soil detection according to claim 1, characterized in that: A stirring head (4015) with a straight-line structure is installed below the stirring shaft (4014); when the first gear (4012) and the second gear (4013) rotate, the stirring head (4015) can cover the bottom of the sieve plate (3) and rotate.

3. The soil screening device for environmental soil detection according to claim 2, characterized in that: A scraper head (4017) extending in the vertical direction is installed below the scraper rod (4016). When the circular disc (401) rotates, the scraper head (4017) can be driven to rotate close to the inner wall of the sieve disc (3).

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