A screening soil heavy metal content detection device

Abstract

The utility model discloses a kind of soil heavy metal content detection devices of screening, including detection box, the top of detection box has feeding opening.Compared with prior art, by setting the filter plate of upper surface is inclined plane, in the process of screening soil, those impurities that cannot pass through filter plate will be automatically moved along the inclined plane of filter plate under the action of its gravity and filter plate sieve, then smoothly discharge through the blanking plate.This process does not need manual intervention, effectively avoids the problem that filter plate is blocked due to impurity residue, reduces the labor intensity of operator, it is more convenient and efficient to use.By setting the connecting mechanism, the filter plate can be conveniently disassembled and assembled, and the filter plate can be removed by simply pulling it up.

Description

Technical Field

[0001] This utility model relates to the field of soil testing technology, and in particular to a screenable soil heavy metal content detection device. Background Technology

[0002] Heavy metal pollution in soil is a major concern in the environmental field today, posing potentially serious threats to ecosystems, crop growth, and human health. Accurate testing of heavy metal content in soil is necessary to accurately assess soil quality and environmental risks.

[0003] Existing soil heavy metal content detection devices have some shortcomings in practical use. For example, before testing, soil samples often contain various impurities, such as stones and plant roots, which can interfere with the accuracy of the test results.

[0004] For example, Chinese patent CN220671427U discloses a soil heavy metal content detection device, including: a processing box, a crushing box, a feed inlet, and a crushing mechanism. The crushing box is fixedly installed on the top of the processing box, the feed inlet is located on the top of the crushing box, and the crushing mechanism is disposed on the crushing box. It uses a filter plate to screen the sampled soil, preventing small stones and other impurities in the soil from affecting the accuracy of heavy metal content detection.

[0005] However, when the aforementioned device screens soil through a filter plate, a large amount of impurities that cannot pass through the filter plate's pores remain on the filter plate surface. If these impurities are not cleaned in time, they can easily clog the filter plate, thus affecting screening efficiency and the normal operation of the device. Existing devices typically require manual cleaning of the residual impurities, which not only increases the workload of operators but may also require pausing the device's operation during the cleaning process, making it inconvenient to use.

[0006] On the other hand, different types of soil have significantly different particle size distributions; for example, sandy soil has coarser particles, while clay soil has finer particles. If a screen with the same pore size is used during the screening process, it is difficult to adapt to the screening requirements of different soil types. Therefore, it is often necessary to change the filter plate to one with the appropriate pore size for different soil types. However, existing filter plates are usually fixed with multiple bolts, which makes disassembly and assembly inconvenient, resulting in a cumbersome and time-consuming filter plate replacement process. Utility Model Content

[0007] The main objective of this invention is to propose a screenable soil heavy metal content detection device, which can effectively solve the problems in the background technology.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is: a screenable soil heavy metal content detection device, comprising:

[0009] A testing box, the top of which has a feeding port;

[0010] The mounting frame is located inside the testing box, and a feed plate with an inclined upper surface is fixedly connected to one side wall of the mounting frame;

[0011] A filter plate, wherein the filter plate is disposed within a mounting frame, and the upper surface of the filter plate is inclined.

[0012] A feed hopper is fixedly installed inside the testing chamber and located below the filter plate;

[0013] The testing platform is fixedly installed on the lower inner wall of the testing box;

[0014] A connecting mechanism is provided on the mounting frame and the filter plate, and the connecting mechanism is used to complete the quick assembly and disassembly of the filter plate and the mounting frame.

[0015] A drive mechanism is installed inside the detection box. The drive mechanism is used to drive the mounting frame to move back and forth, so that the filter plate can sieve the soil.

[0016] As a further description of the above technical solution, the connecting mechanism includes two connecting grooves symmetrically opened on the upper surface of the mounting frame. Two symmetrically distributed fixing seats are fixedly connected to the upper surface of the filter plate. A locking block is fixedly connected to each of the two side walls of the connecting groove. Two locking claws that wedge with the locking blocks are slidably arranged inside the fixing seat. A partition is fixedly connected to the center of the fixing seat. Two first return springs are fixedly connected to the inner walls of both sides of the partition. The other end of the first return spring is fixedly connected to the locking claw. Two symmetrically distributed slots are opened on the upper side wall of the fixing seat. A lever is slidably arranged in the slot. The lever is fixedly connected to the locking claw.

[0017] As a further description of the above technical solution, the driving mechanism includes a drive motor mounted on the outer wall of one side of the detection box. The output shaft of the drive motor extends into the detection box and is fixedly connected to a rotating rod. The other end of the rotating rod is rotatably connected to the inner wall of the other side of the detection box. Two cams are fixedly sleeved on the rotating rod. Top rods that cooperate with the cams are fixedly connected to both sides of the lower side wall of the mounting frame. The lower end of the top rod is provided with a ball bearing.

[0018] As a further description of the above technical solution, a mounting plate is fixedly connected between the inner walls of the two sides of the detection box, and a spectrometer is mounted on the mounting plate, with the detection end of the spectrometer facing the detection stage.

[0019] As a further description of the above technical solution, the detection box has a door, a microprocessor is installed on the door, the microprocessor integrates a display screen, and the spectrometer is electrically connected to the microprocessor.

[0020] As a further description of the above technical solution, two symmetrically distributed guide grooves are provided on the inner walls of both sides of the detection box. A follower block is slidably provided in the guide groove. A second reset spring is provided between the follower block and the guide groove. The mounting frame is fixedly connected to the follower block.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. By setting up a filter plate with an inclined upper surface, during the screening of soil by the filter plate's movement, impurities that cannot pass through the filter plate will automatically move along the inclined surface of the filter plate under their own gravity and the action of the filter plate's movement, and then be smoothly discharged through the discharge plate. This process requires no manual intervention, effectively avoiding the problem of filter plate clogging caused by impurities, reducing the labor intensity of operators, and making it more convenient and efficient to use.

[0023] 2. The designed connecting mechanism allows for easy assembly and disassembly of the filter plates, which can be removed with a simple lifting motion. When different types of soil need to be screened, operators can quickly replace the filter plates with the appropriate pore size to meet the screening requirements of different soils, effectively solving the problem of cumbersome filter plate replacement in existing technologies. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of a soil heavy metal content detection device that can be screened according to the present invention.

[0026] Figure 2 This is a schematic diagram of the internal structure of the detection box of a soil heavy metal content detection device that can be screened according to this utility model;

[0027] Figure 3 This is a schematic diagram of the installation frame structure of a soil heavy metal content detection device that can be screened according to this utility model;

[0028] Figure 4 This is a schematic diagram of the filter plate structure of a soil heavy metal content detection device that can be screened according to the present invention.

[0029] Figure 5 This is a schematic diagram of the connection mechanism of a soil heavy metal content detection device that can be screened according to the present invention.

[0030] Figure 6 This is a schematic diagram of the drive mechanism of a soil heavy metal content detection device that can be screened according to the present invention.

[0031] Figure 7 This is a schematic diagram of the guide groove structure of a soil heavy metal content detection device that can be screened according to this utility model;

[0032] In the diagram: 1. Detection box; 11. Feeding port; 2. Mounting frame; 21. Feeding plate; 3. Filter plate; 4. Guide hopper; 5. Detection table; 6. Connecting mechanism; 7. Drive mechanism; 61. Connecting groove; 62. Fixed seat; 63. Locking block; 64. Claw; 65. Partition plate; 66. First return spring; 67. Slot; 68. Pulley plate; 71. Drive motor; 72. Rotating rod; 73. Cam; 74. Push rod; 8. Mounting plate; 81. Spectrometer; 9. Box door; 91. Microprocessor; 12. Guide groove; 13. Follower block; 14. Second return spring. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0035] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] Please see Figures 1 to 7This utility model provides a soil heavy metal content detection device that can be screened, including: a detection box 1, a mounting frame 2, a filter plate 3, a feed hopper 4, a detection platform 5, a connecting mechanism 6, and a driving mechanism 7. The top of the detection box 1 has a feeding port 11. The mounting frame 2 is set inside the detection box 1. A feed plate 21 with an inclined upper surface is fixedly connected to one side wall of the mounting frame 2. The filter plate 3 is set inside the mounting frame 2. The upper surface of the filter plate 3 is inclined. The feed hopper 4 is fixedly set inside the detection box 1 and located below the filter plate 3. The detection platform 5 is fixedly set on the lower inner wall of the detection box 1. The connecting mechanism 6 is set on the mounting frame 2 and the filter plate 3. The connecting mechanism 6 is used to complete the quick assembly and disassembly between the filter plate 3 and the mounting frame 2. The driving mechanism 7 is set inside the detection box 1. The driving mechanism 7 is used to drive the mounting frame 2 to reciprocate, so that the filter plate 3 screens the soil.

[0038] To further explain, the feed port 11 is used to feed the soil sample to be tested into the device. The mounting frame 2 supports the filter plate 3, and the feed plate 21 fixedly connected to one side wall is used to discharge impurities that cannot pass through the filter plate 3, such as stones and plant roots. The filter plate 3 is embedded in the mounting frame 2, and its upper surface is inclined. The sieve holes on its surface are used to screen the soil. The inclined design allows impurities to automatically slide down to the feed plate 21 under the action of gravity and screening, avoiding accumulation and blockage. The guide hopper 4 is funnel-shaped and is used to receive soil particles that pass through the filter plate 3 and guide them to the detection platform 5. The detection platform 5 serves as the detection carrier for the soil sample, allowing the spectrometer 81 to detect the heavy metal content.

[0039] To further explain, the connecting mechanism 6 includes two connecting grooves 61 symmetrically opened on the upper surface of the mounting frame 2. Two symmetrically distributed fixing seats 62 are fixedly connected to the upper surface of the filter plate 3. A locking block 63 is fixedly connected to each of the two side walls of the connecting groove 61. Two locking claws 64 that wedge with the locking block 63 are slidably provided in the fixing seat 62. A partition 65 is fixedly connected to the center of the fixing seat 62. Two first return springs 66 are fixedly connected to each of the two inner walls of the partition 65. The other end of the first return spring 66 is fixedly connected to the locking claw 64. Two symmetrically distributed slots 67 are opened on the upper side wall of the fixing seat 62. A lever 68 is slidably provided in the slot 67. The lever 68 is fixedly connected to the locking claw 64.

[0040] Furthermore, the connecting mechanism 6 allows for easy assembly and disassembly of the filter plate 3, which can be removed with a simple lifting action. When different types of soil need to be screened, operators can quickly replace the filter plate 3 with one of the appropriate pore size to meet the screening requirements of different soils, effectively solving the problem of cumbersome filter plate 3 replacement in the prior art.

[0041] To further explain, the drive mechanism 7 includes a drive motor 71 mounted on the outer wall of one side of the detection box 1. The output shaft of the drive motor 71 extends into the detection box 1 and is fixedly connected to a rotating rod 72. The other end of the rotating rod 72 is rotatably connected to the inner wall of the other side of the detection box 1. Two cams 73 are fixedly sleeved on the rotating rod 72. Both sides of the lower side wall of the mounting frame 2 are fixedly connected to push rods 74 that cooperate with the cams 73. The lower end of the push rod 74 is provided with a ball bearing.

[0042] To further explain, the drive mechanism 7 provides the power for the reciprocating movement of the mounting frame 2 and the filter plate 3, thereby achieving efficient sieving of the soil.

[0043] To further explain, a mounting plate 8 is fixedly connected between the inner walls of the two sides of the detection box 1. A spectrometer 81 is mounted on the mounting plate 8, with the detection end of the spectrometer 81 facing the detection stage 5.

[0044] To further explain, the spectrometer 81 illuminates the soil sample on the testing platform 5 by emitting light of a specific wavelength. Heavy metal elements in the soil absorb or reflect this specific wavelength of light. The spectrometer 81 receives the reflected light signal and converts it into an electrical signal, thereby analyzing and determining the heavy metal content. The spectrometer 81 is a well-known detection device in the art, and its specific structure and principle will not be elaborated upon here.

[0045] To further explain, the detection box 1 has a door 9, on which a microprocessor 91 is installed. The microprocessor 91 integrates a display screen, and the spectrometer 81 is electrically connected to the microprocessor 91.

[0046] To further explain, the microprocessor 91 receives the electrical signal transmitted by the spectrometer 81, calculates the specific content of heavy metals in the soil through a built-in algorithm, and displays the detection results on the screen for easy reading by operators.

[0047] It should also be noted that the microprocessor 91 mentioned above is an STM32 series processor, and the circuit and program used are common technologies in the processor field. Those skilled in the art can easily derive the specific circuit based on the above description. Therefore, the specific circuit will not be described in detail in this article.

[0048] To further explain, two symmetrically distributed guide grooves 12 are provided on the inner walls of both sides of the test box 1. A follower block 13 is slidably provided in the guide groove 12. A second reset spring 14 is provided between the follower block 13 and the guide groove 12. The mounting frame 2 is fixedly connected to the follower block 13.

[0049] To further explain, the follower block 13 slides along the guide groove 12, limiting the movement direction of the mounting frame 2 and preventing it from deviating. When the cam 73 no longer pushes the push rod 74, the elastic force of the second return spring 14 pushes the follower block 13 and the mounting frame 2 to quickly return to their original positions, ensuring the stability and continuity of the reciprocating motion.

[0050] It should be noted that this utility model is a soil heavy metal content detection device that can be screened. During use, a filter plate 3 with an appropriate pore size is selected according to the type of soil to be tested. During assembly, the fixing seat 62 of the filter plate 3 is aligned with the connecting groove 61 of the mounting frame 2 and pressed down. The claw 64 is squeezed inward by the wedge-shaped surface of the locking block 63, and simultaneously, the first return spring 66 is compressed. When the claw 64 passes the locking block 63, the first return spring 66 returns to its original position, pushing the claw 64 outward to engage with the locking block 63, thus fixing the filter plate 3. When disassembly is required, the lever 68 is moved inward through the slot 67, causing the claw 64 to retract and disengage from the locking block 63. The filter plate 3 can then be lifted upward and pulled out to complete disassembly. After assembling the filter plate 3, the door 9 is closed, and the soil sample to be tested is added into the testing box 1 through the feeding port 11 at the top of the testing box 1. The soil sample falls onto the inclined surface of the filter plate 3. When the drive motor 71 is started, the drive mechanism 7 begins to work. The rotating rod 72 drives the cam 73 to rotate. The protruding part of the cam 73 contacts the ball of the push rod 74 and pushes it upward. At this time, the follower block 13 moves upward along the guide groove 12, and the second return spring 14 is squeezed. When the cam 73 rotates to the concave part corresponding to the push rod 74, the thrust of the second return spring 14 pushes the follower block 13 downward, and the push rod 74 falls back. Through the periodic rotation of the cam 73 and the return force of the second return spring 14, the mounting frame 2 achieves up-and-down reciprocating motion, and the filter plate 3 screens synchronously. During the screening process, soil particles that meet the particle size requirements fall through the screen holes of the filter plate 3 into the guide hopper 4 below, and are collected by the guide hopper 4 and fall onto the detection table 5. Impurities that cannot pass through the filter plate 3 slide along the inclined surface of the filter plate 3 to the discharge plate 21 on one side of the mounting frame 2 under the action of the screening action, and slide out of the detection box 1 through the discharge plate 21. Once sufficient soil samples have been collected on the testing platform 5, the drive motor 71 is turned off, and the screening process stops. The spectrometer 81 is then activated. The spectrometer 81's detection end emits detection light towards the soil samples on the testing platform 5, receives the reflected light signal, converts it into an electrical signal, and transmits it to the microprocessor 91. The microprocessor 91 analyzes and processes the electrical signal, calculates the content of various heavy metals in the soil, and displays the test results on the integrated display screen. After the test is completed, the chamber door 9 is opened, and any residual soil on the testing platform 5 is cleaned. If testing is required again, the above steps are repeated; if different types of soil need to be tested, the corresponding filter plate 3 is replaced before proceeding.

[0051] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. The present utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A soil heavy metal content detection device that can be screened, characterized by, Includes a testing box (1), the top of which has a feeding port (11); Mounting frame (2), the mounting frame (2) is set inside the detection box (1), and a feeding plate (21) with an inclined upper surface is fixedly connected to one side wall of the mounting frame (2). The filter plate (3) is set inside the mounting frame (2), and the upper surface of the filter plate (3) is inclined. The guide hopper (4) is fixedly installed inside the detection box (1) and located below the filter plate (3); The testing platform (5) is fixedly installed on the lower inner wall of the testing box (1); A connecting mechanism (6) is provided on the mounting frame (2) and the filter plate (3). The connecting mechanism (6) is used to complete the quick assembly and disassembly between the filter plate (3) and the mounting frame (2). The driving mechanism (7) is set inside the detection box (1). The driving mechanism (7) is used to drive the mounting frame (2) to move back and forth, so that the filter plate (3) can sieve the soil.

2. The device for detecting the content of heavy metals in soil according to claim 1, characterized in that: The connecting mechanism (6) includes two connecting grooves (61) symmetrically opened on the upper surface of the mounting frame (2). Two symmetrically distributed fixing seats (62) are fixedly connected to the upper surface of the filter plate (3). A locking block (63) is fixedly connected to both sides of the connecting groove (61). Two locking claws (64) that wedge with the locking block (63) are slidably provided in the fixing seat (62). A partition plate (65) is fixedly connected to the center of the fixing seat (62). Two first return springs (66) are fixedly connected to both sides of the inner wall of the partition plate (65). The other end of the first return spring (66) is fixedly connected to the locking claw (64). Two symmetrically distributed slots (67) are opened on the upper side wall of the fixing seat (62). A lever plate (68) is slidably provided in the slot (67). The lever plate (68) is fixedly connected to the locking claw (64).

3. The device for detecting the content of heavy metals in soil according to claim 1, characterized in that: The drive mechanism (7) includes a drive motor (71) installed on the outer wall of one side of the test box (1). The output shaft of the drive motor (71) extends into the test box (1) and is fixedly connected to a rotating rod (72). The other end of the rotating rod (72) is rotatably connected to the inner wall of the other side of the test box (1). Two cams (73) are fixedly sleeved on the rotating rod (72). The lower side wall of the mounting frame (2) is fixedly connected to top rods (74) that cooperate with the cams (73). The lower end of the top rod (74) is provided with a ball bearing.

4. The device for detecting the content of heavy metals in soil according to claim 1, characterized in that: An installation plate (8) is fixedly connected between the inner walls of the two sides of the detection box (1). A spectrometer (81) is installed on the installation plate (8), and the detection end of the spectrometer (81) faces the detection stage (5).

5. The device for screening the content of heavy metals in soil according to claim 4, characterized in that: The detection box (1) has a door (9), on which a microprocessor (91) is installed. The microprocessor (91) integrates a display screen, and the spectrometer (81) is electrically connected to the microprocessor (91).

6. The device for detecting the content of heavy metals in soil according to claim 1, characterized in that: The inner walls of both sides of the test box (1) are provided with two symmetrically distributed guide grooves (12). A follower block (13) is slidably provided in the guide groove (12). A second reset spring (14) is provided between the follower block (13) and the guide groove (12). The mounting frame (2) is fixedly connected to the follower block (13).

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