Drying and screening device for rapid soil determination

Abstract

The utility model relates to the technical field of screening, in particular to a drying and screening device for rapid soil determination, which comprises a rectangular frame, a screening mechanism, a drying mechanism and a horizontal moving mechanism, the screening mechanism comprises a screening net and two first connecting assemblies, and the two first connecting assemblies are arranged at the two ends of the screening net correspondingly. The number of the drying mechanisms is two, each drying mechanism comprises a U-shaped opening and closing assembly, two drying assemblies, an opening and closing driving structure and two second connecting assemblies, each U-shaped opening and closing assembly comprises a vertical plate and two opening and closing plates, the opening and closing plates are in shaft connection with the vertical plates, and the two drying assemblies are arranged on the opposite sides of the two opening and closing plates correspondingly; the opening and closing driving structure is arranged beside the middle of the vertical plate, and the two second connecting assemblies correspond to the two opening and closing plates correspondingly. The horizontal moving mechanisms are arranged on the two sides of the rectangular frame. And by arranging the screening mechanism, the drying mechanism and the horizontal moving mechanism, double-face simultaneous drying of the soil is achieved, and therefore the drying speed of the soil is increased.

Description

Technical Field

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

[0002] Rapid and accurate determination of soil properties is crucial in agricultural production and soil science research. Soil parameters such as moisture content, particle size distribution, and organic matter content directly impact crop growth and yield, and are also crucial for assessing soil fertility and formulating optimal farming practices. Traditional soil drying methods typically rely on natural air drying or oven drying, both of which are time-consuming and susceptible to environmental factors, resulting in unstable drying results.

[0003] Patent announcement number CN215640447U discloses a soil rapid drying and screening device for soil testing. It dries the soil spread on the top of the conveyor belt through a heating tube inside a fixed frame. The motor drives the first rotating shaft to rotate, and the rotating first rotating shaft drives the fixed rod to rotate. The rotating fixed rod drives the raised block to rotate. The rotating raised block continuously shakes the conveyor belt up and down, thereby screening the soil through the through holes inside the conveyor belt, achieving rapid soil drying and screening, and improving the working efficiency of the device.

[0004] Although the above scheme achieves soil drying through the vibration of the conveyor belt and the heating of the heating tube, when the moist soil is spread on the conveyor belt, the soil at the bottom will be pressed by the soil above. When the conveyor belt vibrates, the soil at the top vibrates better, while the soil at the bottom is restricted by the soil above and the vibration amplitude is smaller, resulting in the soil at the bottom being less affected by the heating tube, and the drying time needs to be extended. Utility Model Content

[0005] To address the above problems, a drying and screening device for rapid soil testing is provided. By providing a screening mechanism, a drying mechanism and a horizontal movement mechanism, the soil can be dried on both sides simultaneously, thereby accelerating the drying speed of the soil and shortening the processing time.

[0006] In order to solve the problems of the prior art, the utility model provides a drying and screening device for rapid soil testing, comprising a rectangular frame, a screening mechanism, a drying mechanism and a horizontal moving mechanism; the rectangular frame is arranged horizontally; the screening mechanism is arranged inside the rectangular frame, the screening mechanism comprises a screening net and two first connecting components, the screening net is arranged horizontally in the middle of the rectangular frame, a plurality of first sieve holes are opened on the screening net, the two first connecting components are respectively arranged at both ends of the screening net, and the first connecting components connect the rectangular frame and the screening net; the drying mechanism has two, the two drying mechanisms are respectively arranged on both sides of the screening net, and the drying mechanism It includes a U-shaped opening and closing component, two drying components, an opening and closing drive structure and two second connecting components. The U-shaped opening and closing component includes a vertical plate and two opening and closing plates. The vertical plate is arranged parallel to one side of the screening net. The two opening and closing plates are respectively arranged on the upper and lower sides of the vertical plate. The opening and closing plates are axially connected to the vertical plate. The two drying components are respectively arranged on the opposite sides of the two opening and closing plates. The opening and closing drive structure is arranged on the side of the middle of the vertical plate. The two second connecting components correspond to the two opening and closing plates respectively. The second connecting component connects the opening and closing plates and the opening and closing drive structure; the horizontal moving mechanism is arranged on both sides of the rectangular frame, and the horizontal moving mechanism is connected to the two drying mechanisms.

[0007] Preferably, the opening and closing drive structure includes a rectangular frame, a first screw rod and two first moving blocks; the middle part of the rectangular frame is connected to the side of the rectangular frame; the two ends of the first screw rod are respectively connected to the two ends of the rectangular frame, and the two ends of the first screw rod are provided with threaded parts with opposite thread directions; the two first moving blocks are respectively arranged on the two threaded parts of the first screw rod; the second connecting assembly includes a sliding connection assembly and two connecting arm assemblies; the sliding connection assembly includes a second guide column and a second slider, the two ends of the second guide column are connected to the opening and closing plate, and the second slider is slidably arranged on the second guide column; the two connecting arm assemblies are respectively arranged on both sides of the first moving block, one end of the connecting arm assembly is fixedly connected to the first moving block, and the other end of the connecting arm assembly is axially connected to the second slider.

[0008] Preferably, the connecting arm assembly includes a connecting seat, a connecting rod and a second spring; the connecting seat is fixedly connected to the first moving block; the connecting rod is slidably arranged in the connecting seat, and both ends of the connecting rod extend out of the connecting seat, and one end of the connecting rod is axially connected to the second slider; the second spring is sleeved on the other end of the connecting rod, and both ends of the second spring are respectively abutted against the first moving block and the end of the connecting rod.

[0009] Preferably, the horizontal moving mechanism includes several guide rods and two horizontal pushing structures; the several guide rods are arranged parallel to each other inside the rectangular frame, the two ends of the guide rods are connected to the two side walls of the rectangular frame, and the two drying mechanisms are respectively slidably arranged at the two ends of the guide rods; the two horizontal pushing structures are respectively arranged on the two side walls of the rectangular frame, and the two horizontal pushing structures are respectively connected to the two drying mechanisms.

[0010] Preferably, the first connecting component includes a connecting frame, two elastic support components and a vibration driver; the connecting frame is connected to the end of the screening net; the two elastic support components are respectively arranged at both ends of the connecting frame, and the two ends of the elastic support components are respectively connected to the connecting frame and the rectangular frame; the vibration driver is arranged on the rectangular frame, and the vibration driver is connected to the connecting frame.

[0011] Preferably, the screening mechanism also includes two closed structures, which are respectively arranged at both ends of the screening net, and the closed structures include a closing plate and a linear drive; the closing plate is horizontally and slidably arranged inside the screening net, and a plurality of second sieve holes are opened on the closing plate; the linear drive is arranged on the connecting frame, and the output end of the linear drive is connected to the closing plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The utility model is provided with a screening net, a U-shaped opening and closing component, a drying component, an opening and closing drive structure, a second connecting component and a horizontal moving mechanism. Through the coordinated action of the opening and closing plate and the drying mechanism, the device can form an open screening space in the initial state, which is convenient for laying soil. The opening and closing plate rotates under the drive of the opening and closing drive structure, and together with the drying mechanism forms a closed drying space, so that the two drying components can provide heat energy from the upper and lower sides of the screening net at the same time, realizing the simultaneous drying of both sides of the soil, thereby accelerating the drying speed of the soil and shortening the processing time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a stereoscopic diagram of a drying and screening device for rapid soil testing according to the utility model.

[0015] Figure 2 This is a left view of a drying and screening device for rapid soil testing according to the utility model.

[0016] Figure 3 yes Figure 2 Stereoscopic cross-sectional view at AA in the middle.

[0017] Figure 4 The utility model is a three-dimensional diagram of a drying mechanism in a drying and screening device for rapid soil testing.

[0018] Figure 5 The utility model is a three-dimensional diagram of a first moving block, a sliding connection assembly and a connecting arm assembly in a drying and screening device for rapid soil determination.

[0019] Figure 6 The utility model is a three-dimensional diagram of a rectangular frame, a U-shaped opening and closing component, a drying component and a horizontal moving mechanism in a drying and screening device for rapid soil determination.

[0020] Figure 7 The utility model is a three-dimensional diagram of a rectangular frame, a screening net, a first connecting component and a closed structure in a drying and screening device for rapid soil testing.

[0021] Figure 8 The utility model is a three-dimensional diagram of a screening net and a closed structure in a drying and screening device for rapid soil determination.

[0022] The numbers in the figure are: 1. rectangular frame; 2. screening mechanism; 21. screening net; 22. first connecting assembly; 221. connecting frame; 222. elastic support assembly; 2221. connecting bracket; 2222. first guide column; 2223. first slider; 2224. first spring; 223. vibration driver; 23. closing structure; 231. closing plate; 232. linear driver; 3. drying mechanism; 31. U-shaped opening and closing assembly; 311. vertical plate; 312. opening and closing plate; 32. drying assembly; 33. opening and closing drive structure ; 331. Rectangular frame; 332. First screw rod; 333. First moving block; 34. Second connecting assembly; 341. Sliding connecting assembly; 3411. Second guide column; 3412. Second slider; 342. Connecting arm assembly; 3421. Connecting seat; 3422. Connecting rod; 3423. Second spring; 4. Horizontal moving mechanism; 41. Guide rod; 42. Horizontal pushing structure; 421. Second screw rod; 422. Second moving block; 423. Drive plate; 424. Rotary drive; 425. Bevel gear transmission group. DETAILED DESCRIPTION

[0023] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Reference Figures 1 to 8As shown: A drying and screening device for rapid soil testing, comprising a rectangular frame 1, a screening mechanism 2, a drying mechanism 3 and a horizontal moving mechanism 4; the rectangular frame 1 is horizontally arranged; the screening mechanism 2 is arranged inside the rectangular frame 1, the screening mechanism 2 comprises a screening net 21 and two first connecting components 22, the screening net 21 is horizontally arranged in the middle of the rectangular frame 1, the screening net 21 is provided with a plurality of first sieve holes, the two first connecting components 22 are respectively arranged at both ends of the screening net 21, and the first connecting components 22 connect the rectangular frame 1 and the screening net 21; the drying mechanism 3 has two, the two drying mechanisms 3 are respectively arranged on both sides of the screening net 21, the drying mechanism 3 comprises a U-shaped opening and closing component 31, two drying components 32, an opening The U-shaped opening and closing component 31 includes a vertical plate 311 and two opening and closing plates 312. The vertical plate 311 is arranged parallel to one side of the screening net 21. The two opening and closing plates 312 are respectively arranged on the upper and lower sides of the vertical plate 311. The opening and closing plates 312 are axially connected to the vertical plate 311. The two drying components 32 are respectively arranged on the opposite sides of the two opening and closing plates 312. The opening and closing driving structure 33 is arranged on the side of the middle of the vertical plate 311. The two second connecting components 34 correspond to the two opening and closing plates 312 respectively. The second connecting components 34 connect the opening and closing plates 312 and the opening and closing driving structure 33; the horizontal moving mechanism 4 is arranged on both sides of the rectangular frame 1, and the horizontal moving mechanism 4 is connected to the two drying mechanisms 3.

[0025] First, the device is in the initial state. At this time, the upper surface of the screening net 21 is completely exposed, and the two opening and closing plates 312 are coplanar with the vertical plate 311 to form an open screening space. Subsequently, the crushed soil is evenly spread on the screening net 21. Next, the two drying mechanisms 3 are started, and the opening and closing driving structure 33 drives the opening and closing plates 312 to rotate around the axial joints with the vertical plates 311 through the second connecting assembly 34. As the opening and closing plates 312 rotate, the two opening and closing plates 312 gradually change from a vertical state to a horizontal state. At the same time, the horizontal moving mechanism 4 is started, driving the two drying mechanisms 3 to move toward each other until the corresponding opening and closing plates 312 in the two drying mechanisms 3 are tightly fitted, so that the screening net 21 and its upper surface are fixed together. The soil is completely wrapped. In this state, the two drying components 32 in the drying mechanism 3 provide heat energy from the upper and lower sides of the screening net 21 respectively, so that the soil is dried on both sides at the same time. After drying is completed, the opening and closing driving structure 33 drives the opening and closing plate 312 to rotate again, so that the opening and closing plate 312 is restored to the initial state of being coplanar with the vertical plate 311. The reset opening and closing plate 312 will not hinder the screening of the soil. Subsequently, by vibrating the screening net 21, the dried soil passes through the first sieve hole and falls into the collection area below, while impurities such as gravel in the soil remain on the screening net 21, completing the soil screening process. By heating both sides of the soil at the same time, the drying speed of the soil is accelerated and the processing time is shortened.

[0026] Reference Figure 3、 Figure 4 and Figure 5 As shown: the opening and closing drive structure 33 includes a rectangular frame 331, a first screw rod 332 and two first moving blocks 333; the middle part of the rectangular frame 331 is connected to the side of the rectangular frame 1; the two ends of the first screw rod 332 are respectively connected to the two ends of the rectangular frame 331, and the two ends of the first screw rod 332 are provided with threaded parts with opposite thread directions; the two first moving blocks 333 are respectively arranged on the two threaded parts of the first screw rod 332; the second connecting assembly 34 includes a sliding connecting assembly 341 and two connecting arm assemblies 342; the sliding connecting assembly 341 includes a second guide column 3411 and a second slider 3412, the two ends of the second guide column 3411 are connected to the opening and closing plate 312, and the second slider 3412 is slidably arranged on the second guide column 3411; the two connecting arm assemblies 342 are respectively arranged on both sides of the first moving block 333, one end of the connecting arm assembly 342 is fixedly connected to the first moving block 333, and the other end of the connecting arm assembly 342 is axially connected to the second slider 3412.

[0027] When the first and second guide plates 312 are in the same plane as each other, the first movable block 333 is located at one end of the first screw rod 332, and the second slider 3412 is located at one end of the second guide column 3411. The height of the first movable block 333 and the second slider 3412 are kept consistent. The first movable block 333 and the second slider 3412 maintain a constant distance between them under the action of the connecting arm assembly 342. When the opening and closing plate 312 needs to be driven to rotate, the first screw rod 332 starts to rotate. Due to the threaded engagement of the first movable block 333 and the first screw rod 332, the two first movable blocks 333 will move toward the middle along the first screw rod 332 respectively. During the movement, the first movable block 333 is connected to the connecting arm assembly 342. Component 342 applies a force to the second slider 3412. Since the connecting arm assembly 342 and the second slider 3412 are in an axial connection relationship, when the first moving block 333 moves, the connecting arm assembly 342 will drive the second slider 3412 to slide along the second guide column 3411, and in the process, it will rotate relative to the second slider 3412. Since the connecting arm assembly 342 is fixedly connected to the first moving block 333 and cannot rotate, this relative rotation causes the second slider 3412 to rotate, and then transmits the rotational force to the opening and closing plate 312 through the second guide column 3411, driving it to rotate around the axial connection with the vertical plate 311, thereby effectively driving the rotation of the opening and closing plate 312 and improving work efficiency.

[0028] Reference Figure 4 and Figure 5As shown: the connecting arm assembly 342 includes a connecting seat 3421, a connecting rod 3422 and a second spring 3423; the connecting seat 3421 is fixedly connected to the first moving block 333; the connecting rod 3422 is slidably set in the connecting seat 3421, and the two ends of the connecting rod 3422 extend out of the connecting seat 3421, and one end of the connecting rod 3422 is axially connected to the second slider 3412; the second spring 3423 is sleeved on the other end of the connecting rod 3422, and the two ends of the second spring 3423 are respectively abutted against the end of the first moving block 333 and the connecting rod 3422.

[0029] When the opening and closing plate 312 is in a horizontal state, the connecting arm assembly 342 remains parallel to the opening and closing plate 312. As the first screw rod 332 drives the first moving block 333 to move from the middle of the screw rod to the end, the connecting arm assembly 342 transmits the vertical upward force to the second slider 3412. At this time, the force acting on the second slider 3412 is perpendicular to the second guide column 3411, which makes it difficult for the second slider 3412 to move along the guide column. By providing the connecting seat 3421, the connecting rod 3422 and the second spring 3423, when the opening and closing plate 312 is transmitted to the horizontal state, the opening and closing plate 312 applies a pulling force to the connecting rod 3422 through the second slider 3412, and the second slider 3412 drives the connecting rod 342 2 moves, relative sliding occurs between the connecting seat 3421 and the connecting rod 3422, and one end of the connecting rod 3422 moves toward the connecting seat 3421, causing the second spring 3423 to be compressed and store elastic potential energy. When the opening and closing plate 312 is driven to rotate parallel to the vertical plate 311, the vertical upward force applied by the first moving block 333 is transmitted to the second slider 3412. At this time, the second spring 3423 releases its stored elastic potential energy and generates a horizontal force that is transmitted to the second slider 3412. Therefore, the second slider 3412 is simultaneously subjected to the combined force in the vertical and horizontal directions, so that it can move along the second guide column 3411, thereby improving the flexibility and stability of the transmission of the opening and closing plate 312.

[0030] Reference Figure 3 and Figure 6As shown: the horizontal moving mechanism 4 includes a plurality of guide rods 41 and two horizontal pushing structures 42; the plurality of guide rods 41 are arranged parallel to each other inside the rectangular frame 1, the two ends of the guide rods 41 are connected to the two side walls of the rectangular frame 1, and the two drying mechanisms 3 are respectively slidably arranged at the two ends of the guide rods 41; the two horizontal pushing structures 42 are respectively arranged on the two side walls of the rectangular frame 1, and the two horizontal pushing structures 42 are respectively connected to the two drying mechanisms 3, and the horizontal pushing structure 42 includes two second screw rods 421, two second moving blocks 422, and two driving Plate 423, rotation driver 424 and bevel gear transmission group 425, two second screw rods 421 are coaxially arranged, and the second screw rods 421 are connected to the rectangular frame 1, two second moving blocks 422 are respectively arranged on the two second screw rods 421, two driving plates 423 correspond to the two second moving blocks 422 respectively, and the two ends of the driving plate 423 are respectively axially connected to the second moving blocks 422 and the vertical plate 311, the rotation driver 424 is arranged between the two second screw rods 421, and the bevel gear transmission group 425 connects the rotation driver 424 and the two second screw rods 421.

[0031] To ensure that the opening and closing plates 312 in the two drying mechanisms 3 can rotate to a horizontal state, a certain gap needs to be maintained to avoid interference. However, heat loss will occur during the drying process, so the two opening and closing plates 312 need to be pressed tightly together. At this time, the two horizontal pushing structures 42 are started at the same time, and the rotation driver 424 drives the two second screw rods 421 to rotate synchronously through the bevel gear transmission group 425, so that the two second moving blocks 422 move toward each other, and the two driving plates 423 rotate accordingly, pushing the drying mechanism 3 as a whole to move along the guide rod 41 toward the middle of the rectangular frame 1. When the opening and closing plates 312 in the two drying mechanisms 3 are tightly abutted, the horizontal pushing structure 42 stops working. By adjusting the positions of the two drying mechanisms 3, the requirement of rotating the opening and closing plates 312 to a horizontal state is met, and heat loss during the drying process is avoided, thereby improving the drying efficiency.

[0032] Reference Figure 3 and Figure 7As shown: the first connecting component 22 includes a connecting frame 221, two elastic support components 222 and a vibration driver 223; the connecting frame 221 is connected to the end of the screening net 21; the two elastic support components 222 are respectively arranged at both ends of the connecting frame 221, and the two ends of the elastic support component 222 are respectively connected to the connecting frame 221 and the rectangular frame 1, the elastic support component 222 includes a connecting bracket 2221, a first guide column 2222, a first slider 2223 and two first springs 2224, one end of the connecting bracket 2221 is connected to the rectangular frame 1, the first guide column 2222 is vertically arranged at the other end of the connecting bracket 2221, the first slider 2223 is slidably arranged on the first guide column 2222, the two first springs 2224 are respectively sleeved on both ends of the first guide column 2222, and the two ends of the first spring 2224 are respectively abutted against the first slider 2223 and the connecting bracket 2221; the vibration driver 223 is arranged on the rectangular frame 1, and the vibration driver 223 is connected to the connecting frame 221.

[0033] When the soil drying process is completed, the vibration drivers 223 in the two first connecting components 22 are started synchronously, and the vibration energy is transmitted to the screening net 21 through the connecting frame 221, causing the screening net 21 to vibrate. At the same time, the vibration is also transmitted to the two first sliders 2223, causing the first sliders 2223 to reciprocate up and down along the first guide column 2222. During the movement, the first sliders 2223 continuously contact the two first springs 2224. The elastic action of the first springs 2224 further intensifies the vibration amplitude of the first sliders 2223, thereby enhancing the vibration effect of the screening net 21. This violent vibration significantly increases the amplitude of the soil on the screening net 21, making it easier for soil particles to be separated from the first sieve holes. For those gravels that may be blocked in the first sieve holes, the strong vibration also makes it easier to vibrate them to one side of the first sieve holes, thereby avoiding the occurrence of blockage, thereby achieving efficient soil screening.

[0034] Reference Figure 7 and Figure 8 As shown: the screening mechanism 2 also includes two closed structures 23, which are respectively arranged at both ends of the screening net 21. The closed structure 23 includes a closed plate 231 and a linear drive 232; the closed plate 231 is horizontally and slidably arranged inside the screening net 21, and a plurality of second sieve holes are opened on the closed plate 231; the linear drive 232 is arranged on the connecting frame 221, and the output end of the linear drive 232 is connected to the closed plate 231.

[0035] During the drying operation, the soil on the screening net 21 may fall through the first sieve hole to the drying component 32 below during the drying process, thereby interfering with the normal operation of the drying component 32. To solve this problem, two closing structures 23 are set. In the initial state, the linear drive 232 drives the closing plate 231 to move. At this time, a large overlapping area is maintained between the second sieve hole and the first sieve hole, ensuring that the heat energy generated by the drying component 32 below the screening net 21 can smoothly penetrate the screening net 21 and efficiently dry the soil. As the drying time gradually increases, the linear drive 232 continues to drive the closing plate 231 to move, causing the overlapping area between the second sieve hole and the first sieve hole to gradually decrease. When the soil is completely dry, the linear drive 232 moves the closing plate 231 to the final position. At this time, the first sieve hole is completely closed, preventing soil particles from falling onto the drying component 32 below the screening net 21, thereby achieving effective protection for the drying component 32 below the screening net 21.

[0036] The above embodiments merely represent one or several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A drying and screening device for rapid soil testing, characterized in that: It comprises a rectangular frame (1), a screening mechanism (2), a drying mechanism (3) and a horizontal moving mechanism (4); The rectangular frame (1) is arranged horizontally; The screening mechanism (2) is arranged inside the rectangular frame (1), and the screening mechanism (2) includes a screening net (21) and two first connecting components (22). The screening net (21) is horizontally arranged in the middle of the rectangular frame (1), and a plurality of first sieve holes are formed on the screening net (21). The two first connecting components (22) are respectively arranged at both ends of the screening net (21), and the first connecting components (22) connect the rectangular frame (1) and the screening net (21). The drying mechanism (3) has two drying mechanisms (3), which are respectively arranged on both sides of the screening net (21). The drying mechanism (3) includes a U-shaped opening and closing component (31), two drying components (32), an opening and closing drive structure (33), and two second connecting components (34). The U-shaped opening and closing component (31) includes a vertical plate (311) and two opening and closing plates (312). The vertical plate (311) is arranged parallel to one side of the screening net (21). The two opening and closing plates (312) are respectively arranged on the upper and lower sides of the vertical plate (311). The opening and closing plates (312) are axially connected to the vertical plate (311). The two drying components (32) are respectively arranged on the opposite sides of the two opening and closing plates (312). The opening and closing drive structure (33) is arranged on the side of the middle of the vertical plate (311). The two second connecting components (34) correspond to the two opening and closing plates (312), and the second connecting component (34) connects the opening and closing plates (312) and the opening and closing drive structure (33). The horizontal moving mechanism (4) is arranged on both sides of the rectangular frame (1), and the horizontal moving mechanism (4) is connected to the two drying mechanisms (3).

2. A soil rapid testing drying and screening device according to claim 1, characterized in that: The opening and closing driving structure (33) comprises a rectangular frame (331), a first screw rod (332) and two first moving blocks (333); The middle portion of the rectangular frame (331) is connected to the side of the rectangular frame (1); The two ends of the first screw rod (332) are respectively connected to the two ends of the rectangular frame (331), and the two ends of the first screw rod (332) are provided with threaded portions with opposite thread directions; The two first moving blocks (333) are respectively arranged on the two threaded portions of the first screw rod (332); The second connecting assembly (34) includes a sliding connecting assembly (341) and two connecting arm assemblies (342); The sliding connection assembly (341) includes a second guide column (3411) and a second slider (3412), both ends of the second guide column (3411) are connected to the opening and closing plate (312), and the second slider (3412) is slidably arranged on the second guide column (3411); The two connecting arm assemblies (342) are respectively arranged on both sides of the first moving block (333), one end of the connecting arm assembly (342) is fixedly connected to the first moving block (333), and the other end of the connecting arm assembly (342) is axially connected to the second sliding block (3412).

3. A drying and screening device for rapid soil testing according to claim 2, characterized in that: The connecting arm assembly (342) includes a connecting seat (3421), a connecting rod (3422) and a second spring (3423); The connecting seat (3421) is fixedly connected to the first moving block (333); The connecting rod (3422) is slidably arranged in the connecting seat (3421), and both ends of the connecting rod (3422) extend out of the connecting seat (3421), and one end of the connecting rod (3422) is axially connected to the second slider (3412); The second spring (3423) is sleeved on the other end of the connecting rod (3422), and the two ends of the second spring (3423) are respectively in contact with the end of the first moving block (333) and the end of the connecting rod (3422).

4. A soil rapid testing drying and screening device according to claim 1, characterized in that: The horizontal movement mechanism (4) includes a plurality of guide rods (41) and two horizontal pushing structures (42); A plurality of guide rods (41) are arranged parallel to each other inside the rectangular frame (1), the two ends of the guide rods (41) are connected to the two side walls of the rectangular frame (1), and the two drying mechanisms (3) are slidably arranged at the two ends of the guide rods (41); The two horizontal pushing structures (42) are respectively arranged on the two side walls of the rectangular frame (1), and the two horizontal pushing structures (42) are respectively connected to the two drying mechanisms (3).

5. The drying and screening device for rapid soil testing according to claim 1, characterized in that: The first connecting assembly (22) includes a connecting frame (221), two elastic support assemblies (222) and a vibration driver (223); The connecting frame (221) is connected to the end of the screening net (21); Two elastic support components (222) are respectively arranged at two ends of the connecting frame (221), and the two ends of the elastic support components (222) are respectively connected to the connecting frame (221) and the rectangular frame (1); The vibration driver (223) is arranged on the rectangular frame (1), and the vibration driver (223) is connected to the connecting frame (221).

6. A drying and screening device for rapid soil testing according to claim 1, characterized in that: The screening mechanism (2) further comprises two closed structures (23), the two closed structures (23) being respectively arranged at two ends of the screening net (21), and the closed structures (23) comprising a closing plate (231) and a linear drive (232); The closing plate (231) is horizontally and slidably arranged inside the screening net (21), and a plurality of second sieve holes are formed on the closing plate (231); The linear drive (232) is arranged on the connecting frame (221), and the output end of the linear drive (232) is connected to the closing plate (231).

Images