A device for accurately determining the heavy metal pollution condition of cultivated land

Abstract

The application discloses a device for accurately measuring heavy metal pollution condition of cultivated land, which comprises a scale, a display screen, a controller, a handle, a main body and a detection device. When the device is used, an operator holds the handle and controls a stretching and closing member through the controller. In the downward extension process of the stretching and closing member and a telescopic adjusting member, a soil breaking rod is driven by the controller to rotate. Soil drilling leaves and the soil breaking rod cooperated with a rotary drill bit drill holes with different depths in the soil of the cultivated land. Then, the rotary drill bit is opened to expose a detection head. The detection head detects the heavy metal content of the soil with different depths in the cultivated land, so that the operator can accurately check the heavy metal pollution condition of the soil in the cultivated land.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heavy metal pollution treatment, and particularly relates to a device for accurately determining heavy metal pollution conditions of cultivated land. BACKGROUND

[0002] The quality and safety of agricultural products is one of the focuses of people, and the quality of agricultural products is closely related to the environmental quality of soil. Among inorganic pollutants in soil, heavy metals are more prominent. Heavy metal pollutants have little mobility in soil, are not easy to leach with water, are not degraded by microorganisms, and can enter the human body through the food chain and accumulate in organs. When the heavy metals in cultivated land soil are detected, the following needs to be improved:

[0003] When the heavy metals in cultivated land soil are detected, the trace elements contained in the cultivated land are detected by the soil heavy metal detection device. In the detection process, the operator directly contacts the detector to the ground for detection. The detector can only detect the surface layer of the cultivated land soil. If the deep soil needs to be detected, the operator needs to use a tool to first dig the soil to detect the deep soil, which increases the working intensity of the operator. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application is realized by the following technical scheme: a device for accurately determining heavy metal pollution conditions of cultivated land, which comprises a scale, a display screen, a controller, a handle, a main body, and a detection device. The scale is arranged on the main body, and the scale is connected to the detection device through the main body. The detection device penetrates into the main body. The main body is provided with a display screen and a controller. The display screen and the controller are connected by wires. The main body is fixedly connected with the handle.

[0005] As a further optimization of the invention, the detection device comprises a connecting branch, a joint, a shell, an extension adjusting piece, an opening and closing extension piece, a soil breaking rod, a rotary drill bit, a detection head, and a soil drilling blade. The extension adjusting piece is connected to the middle position of the connecting branch. The extension adjusting piece is provided with an opening and closing extension piece on both sides. One end of the opening and closing extension piece is connected to the extension adjusting piece, and the other end is buckled to the connecting branch. The connecting branch is movably clamped with the soil breaking rod. The soil breaking rod is provided with a soil drilling blade connected thereto. The end of the soil breaking rod away from the connecting branch is fixedly connected with the rotary drill bit. The rotary drill bit is provided with a detection head inside. The joint is connected to the scale through the main body.

[0006] As a further optimization of the invention, the rotating drill bit comprises a push-pull rod, a hinge, a movable cavity, a guide rod, a moving slider, a conical head, one end of the push-pull rod is connected to the moving slider, the other end is connected to the conical head, one side of the conical head is provided with a hinge connected thereto, one end of the hinge away from the conical head is connected to the movable cavity, the inside of the movable cavity is provided with a guide rod and a moving slider, the guide rod is slidingly connected to the moving slider, the movable cavity is fixedly connected to the soil breaking rod, the inside of the conical head is provided with a detection head.

[0007] As a further optimization of the invention, the conical head comprises a buffer cushion, a protective cover, a top support assembly, a sealing gasket, a shell, and a triangular joint plate, the buffer cushion is closely attached to the protective cover, the protective cover is mounted on the top support assembly, one end of the top support assembly away from the protective cover is connected to the shell, the shell is movably connected to the triangular joint plate, the triangular joint plate is provided with a sealing gasket attached thereto, the triangular joint plate is connected to the push-pull rod and the hinge, and the buffer cushion is in contact with the detection head.

[0008] As a further optimization of the invention, the top support assembly comprises an opening and closing piece, a restraining strip, a limiting support, and a clamping push block, the opening and closing piece is arranged at the middle position of the limiting support, one end of the opening and closing piece away from the limiting support is connected to the clamping push block, the limiting support is provided with a restraining strip connected thereto, the clamping push block is mounted on the protective cover, and the limiting support is connected to the shell.

[0009] As a further optimization of the invention, the opening and closing piece comprises a limiting slide, a rotating block, a chuck, a first movable arm, a rotating shaft, a rotating disc, a second movable arm, and a movable stopper, two limiting slides are provided, each of the two limiting slides is provided with a movable stopper inside, the two limiting slides are symmetrically connected to the chuck, the chuck is fixedly connected to the first movable arm, the rotating disc is fixedly connected to the second movable arm, the chuck and the rotating disc are movably connected through the rotating shaft, the rotating shaft is provided with rotating blocks embedded at both ends, the rotating blocks are connected to the movable stoppers through the limiting slides, the first movable arm is connected to the telescopic adjusting piece, and the second movable arm is connected to the connecting support.

[0010] As a further optimization of the invention, the soil breaking rod is provided with a plurality of soil drilling leaves, the plurality of soil drilling leaves are connected to the soil breaking rod at equal intervals in a spiral shape.

[0011] As a further optimization of the invention, the four triangular joint plates are in circular arc triangular structure, and the four triangular joint plates are connected to form a conical structure.

[0012] As a further optimization of the invention, the movable stopper is symmetrically installed in the limiting slide in a concave shape.

[0013] Advantages

[0014] The application has the following beneficial effects:

[0015] 1、The combination of the telescopic adjusting piece, the opening and closing extension piece, the soil breaking rod, the detection head and the soil drilling blades, the soil breaking rod rotates on the opening and closing extension piece when the telescopic adjusting piece drives the opening and closing extension piece to extend downward, the soil drilling blades are connected to the soil breaking rod in a spiral shape, which can assist the soil breaking rod to drill holes of different depths in the soil of the farmland, and the detection head can detect the heavy metal content of the soil of different depths in the farmland, so that the operator can accurately check the heavy metal pollution in the soil of the farmland.

[0016] 2、The combination of the buffer cushion, the protective cover, the supporting assembly, the shell and the triangular joint plate, the detection head is arranged in the shell, the four protective covers are pushed forward by the supporting assembly, the four protective covers are connected to the outer ring of the detection head, the triangular joint plate and the shell cooperate to drill soil, the detection head does not vibrate due to the vibration caused by drilling soil, and the detection head is effectively protected.

[0017] 3、The combination of the limiting sliding seat, the rotating block, the chuck, the first movable arm, the rotating shaft, the rotating disc, the second movable arm and the movable stopper, the first movable arm and the second movable arm are connected under the action of the chuck and the rotating disc, the rotating shaft drives the second movable arm to move through the rotating disc, the rotating block moves in the limiting sliding seat under the action of the rotating shaft, the limiting sliding seat can effectively limit the moving position of the rotating block, prevents the first movable arm and the second movable arm from deforming due to excessive movement of the rotating block, and stably drives the connecting branch to move to detect the deep soil of the farmland. BRIEF DESCRIPTION OF DRAWINGS

[0018] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, with reference to the following drawings:

[0019] Figure 1 It is a structural schematic diagram of the application of the device for accurately determining the heavy metal pollution condition of farmland.

[0020] Figure 2 It is an internal structure schematic diagram of the detection device.

[0021] Figure 3 It is an internal structure schematic diagram of the rotating drill bit.

[0022] Figure 4 It is a top view structure schematic diagram of the conical head.

[0023] Figure 5 It is Figure 4The amplification structure of the middle A is shown in the schematic diagram.

[0024] Figure 6 The cross-sectional structure of the extension member of the present application is shown in the schematic diagram.

[0025] In the figure: scale 1, display screen 2, controller 3, handle 4, main body 5, detection device 6, connecting support 61, joint 62, shell 63, telescopic adjusting member 64, extension member 65, soil breaking rod 66, rotary drill bit 67, detection head 68, soil drilling blade 69, push-pull rod 671, hinge 672, movable cavity 673, guide rod 674, moving slider 675, conical head 676, buffer cushion R1, protective cover R2, top support assembly R3, sealing pad R4, shell R5, triangular combination plate R6, opening and closing member R31, restraining strip R32, limiting support R33, clamping push block R34, limiting sliding seat 651, rotating block 652, chuck 653, first movable arm 654, rotating shaft 655, rotating disc 656, second movable arm 657, movable stopper 658. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described below in combination with specific embodiments.

[0027] Embodiment one

[0028] Please refer to Figure 1 The present application provides a technical solution: a device for accurately measuring the heavy metal pollution status of cultivated land, which comprises a scale 1, a display screen 2, a controller 3, a handle 4, a main body 5, and a detection device 6. The scale 1 is arranged on the main body 5, and the scale 1 is connected to the detection device 6 through the main body 5. The detection device 6 penetrates into the inside of the main body 5. The main body 5 is provided with a display screen 2 and a controller 3. The display screen 2 and the controller 3 are connected by wires. The main body 5 is fixedly connected with the handle 4.

[0029] Please refer to Figure 2 The detection device 6 comprises a connecting support 61, a joint 62, a shell 63, a telescopic adjusting member 64, an extension member 65, a soil breaking rod 66, a rotary drill bit 67, a detection head 68, and a soil drilling blade 69. The telescopic adjusting member 64 is connected to the middle position of the connecting support 61. The telescopic adjusting member 64 is provided with the extension member 65 on both sides. One end of the extension member 65 is connected to the telescopic adjusting member 64, and the other end is buckled to the connecting support 61. The connecting support 61 is movably clamped with the soil breaking rod 66. The soil breaking rod 66 is provided with the soil drilling blade 69 connected thereto. The end of the soil breaking rod 66 away from the connecting support 61 is fixedly connected with the rotary drill bit 67. The rotary drill bit 67 is provided with the detection head 68 inside. The joint 62 is connected to the scale 1 through the main body 5.

[0030] Please refer to Figure 2 , the soil breaking rod 66 is provided with a plurality of soil drilling leaves 69, and the plurality of soil drilling leaves 69 are connected in a spiral and equidistant manner on the soil breaking rod 66.

[0031] The soil drilling leaf 69 described above is used in cooperation with the soil breaking rod 66, and the plurality of soil drilling leaves 69 are connected in a spiral and equidistant manner on the soil breaking rod 66. The plurality of soil drilling leaves 69 are made of rigid material and are relatively sharp, which can assist the soil breaking rod 66 to rotate and extend into the soil.

[0032] Please refer to Figure 3 , the rotating drill bit 67 includes a push-pull rod 671, a hinge 672, a movable cavity 673, a guide rod 674, a moving slider 675, and a conical head 676. One end of the push-pull rod 671 is connected to the moving slider 675, and the other end is connected to the conical head 676. One side of the conical head 676 is provided with a hinge 672 connected thereto. The end of the hinge 672 away from the conical head 676 is connected to the movable cavity 673. The movable cavity 673 is internally provided with a guide rod 674 and a moving slider 675. The guide rod 674 is slidably connected to the moving slider 675. The movable cavity 673 is fixedly connected to the soil breaking rod 66. The conical head 676 is internally provided with a detection head 68.

[0033] Please refer to Figure 4 , the conical head 676 includes a buffer cushion R1, a protective cover R2, a top support assembly R3, a sealing gasket R4, an outer shell R5, and a triangular joint plate R6. The buffer cushion R1 is in close contact with the protective cover R2. The protective cover R2 is installed on the top support assembly R3. The end of the top support assembly R3 away from the protective cover R2 is connected to the outer shell R5. The outer shell R5 is movably connected to the triangular joint plate R6. The triangular joint plate R6 is provided with a sealing gasket R4 fitted thereto. The triangular joint plate R6 is connected to the push-pull rod 671 and the hinge 672. The buffer cushion R1 is in contact with the detection head 68.

[0034] Please refer to Figure 4 , the four triangular joint plates R6 are all in the form of circular arc triangular structure, and the four triangular joint plates R6 are connected to form a conical structure.

[0035] The protective cover R2 described above is used in cooperation with the outer shell R5 to place the detection head inside the outer shell R5. The four protective covers R2 are fitted and clamped on the detection head 68, which can protect the detection head 68 and prevent the detection head from vibrating due to soil drilling.

[0036] Please refer to Figure 5The top support assembly R3 comprises an opening and closing piece R31, a limiting strip R32, a limiting support R33, and a clamping push block R34.

[0037] The limiting support R33 is used for matching the clamping push block R34, the clamping push block R34 is connected with the protective cover R2, the limiting support R33 has a fan-shaped structure and has a certain elastic property, and the clamping push block R34 can assist in supporting the protective cover R2, so that the protective cover R2 can be tightly attached to the detection head 68.

[0038] Embodiment two

[0039] Please refer to Figure 1 The application provides a technical scheme: a device for accurately measuring the heavy metal pollution condition of cultivated land, which comprises a scale 1, a display screen 2, a controller 3, a handle 4, a main body 5, a detection device 6, the scale 1 is arranged on the main body 5, the scale 1 is connected with the detection device 6 through the main body 5, the detection device 6 penetrates into the inside of the main body 5, the main body 5 is provided with the display screen 2 and the controller 3, the display screen 2 and the controller 3 are connected through wires, and the main body 5 is fixedly connected with the handle 4.

[0040] Please refer to Figure 2 The detection device 6 comprises a connecting branch 61, a joint 62, a shell 63, an extension adjusting piece 64, a tension and expansion piece 65, a soil breaking rod 66, a rotary drill bit 67, a detection head 68, and a soil drilling blade 69, the extension adjusting piece 64 is arranged at the middle position of the connecting branch 61, the tension and expansion piece 65 is arranged on both sides of the extension adjusting piece 64, one end of the tension and expansion piece 65 is connected with the extension adjusting piece 64, and the other end is buckled with the connecting branch 61, the connecting branch 61 is movably clamped with the soil breaking rod 66, the soil breaking rod 66 is provided with the soil drilling blade 69 connected therewith, one end of the soil breaking rod 66 away from the connecting branch 61 is fixedly connected with the rotary drill bit 67, the rotary drill bit 67 is internally provided with the detection head 68, and the joint 62 is connected with the scale 1 through the main body 5.

[0041] Please refer to Figure 2 The soil breaking rod 66 is provided with a plurality of soil drilling blades 69, and the plurality of soil drilling blades 69 are spirally and equidistantly connected with the soil breaking rod 66.

[0042] The drill leaves 69 are used in cooperation with the soil breaking rod 66, the drill leaves 69 are connected on the soil breaking rod 66 in a spiral equidistant manner, the drill leaves 69 are made of rigid material and are relatively sharp, and the drill leaves 69 can assist the soil breaking rod 66 to rotate and extend into the soil.

[0043] Please refer to Figure 3 , the rotating drill bit 67 comprises a push-pull rod 671, a hinge 672, a movable cavity 673, a guide rod 674, a moving slider 675 and a conical head 676, one end of the push-pull rod 671 is connected to the moving slider 675, the other end of the push-pull rod 671 is connected to the conical head 676, one side of the conical head 676 is provided with the hinge 672 connected thereto, one end of the hinge 672 away from the conical head 676 is connected to the movable cavity 673, the movable cavity 673 is internally provided with the guide rod 674 and the moving slider 675, the guide rod 674 is slidably connected to the moving slider 675, the movable cavity 673 is fixedly connected to the soil breaking rod 66, and the conical head 676 is internally provided with the detection head 68.

[0044] Please refer to Figure 4 , the conical head 676 comprises a buffer cushion R1, a protective cover R2, a jacking assembly R3, a sealing gasket R4, an outer shell R5 and a triangular joint plate R6, the buffer cushion R1 is tightly attached to the protective cover R2, the protective cover R2 is installed on the jacking assembly R3, one end of the jacking assembly R3 away from the protective cover R2 is connected to the outer shell R5, the outer shell R5 is movably connected to the triangular joint plate R6, the triangular joint plate R6 is provided with the sealing gasket R4 attached thereto, the triangular joint plate R6 is connected to the push-pull rod 671 and the hinge 672, and the buffer cushion R1 is in contact with the detection head 68.

[0045] Please refer to Figure 4 , the four triangular joint plates R6 are all in a circular arc triangular structure, and the four triangular joint plates R6 are connected to form a conical structure.

[0046] The protective cover R2 is used in cooperation with the outer shell R5, the detection head is arranged in the outer shell R5, the four protective covers R2 are abutted and clamped on the detection head 68, the detection head 68 can be protected, and the detection head will not vibrate due to the vibration caused by soil drilling.

[0047] Please refer to Figure 5 , the jacking assembly R3 comprises an opening and closing piece R31, a restraining strip R32, a limiting support R33 and a clamping push block R34, the opening and closing piece R31 is arranged at the middle position of the limiting support R33, one end of the opening and closing piece R31 away from the limiting support R33 is connected to the clamping push block R34, the limiting support R33 is provided with the restraining strip R32 connected thereto, the clamping push block R34 is installed on the protective cover R2, and the limiting support R33 is connected to the outer shell R5.

[0048] The above-mentioned limiting support R33 is used for matching the clamping push block R34, the clamping push block R34 is connected with the protective cover R2, the limiting support R33 is a fan-shaped structure, and the limiting support R33 has a certain elastic movement, can assist the clamping push block R34 to support the protective cover R2, so that the protective cover R2 can be tightly attached to the detection head 68.

[0049] Please refer to Figure 6 The limiting slide seat 651 is provided with two, and the two limiting slide seats 651 are internally provided with the movable stop buckle 658. The two limiting slide seats 651 are symmetrically connected to the chuck 653. The chuck 653 is fixedly connected with the first movable arm 654. The turntable 656 is fixedly connected with the second movable arm 657. The chuck 653 and the turntable 656 are movably connected through the rotating shaft 655. The rotating shaft 655 is provided with the rotating block 652 embedded at both ends. The rotating block 652 is connected with the movable stop buckle 658 through the limiting slide seat 651. The first movable arm 654 is connected to the telescopic adjusting part 64. The second movable arm 657 is buckled to the connecting support 61.

[0050] Please refer to Figure 6 The movable stop buckle 658 is symmetrically installed in the limiting slide seat 651 in a concave structure.

[0051] The above-mentioned movable stop buckle 658 is used for matching the limiting slide seat 651. A plurality of movable stop buckles 658 are symmetrically installed on the limiting slide seat 651. The limiting slide seat 651 has a semicircular structure, which can effectively limit the movable position of the rotating block 652, prevent the rotating block 652 from rotating excessively, and then hold and position the rotating position of the rotating block 652 through the movable stop buckle 658.

[0052] The working principle of the above technical solution is as follows:

[0053] When the present application is used, the operator holds the handle 4 and places the main body 5 on the farmland. The moving slider 675 is pushed down through the guide rod 674. After the moving slider 675 moves down, the push-pull rod 671 drives the triangular combined plate R6 to open under the action of the moving slider 675. The hinge 672 also pulls the triangular combined plate R6 upward, so that the four triangular combined plates R6 are opened outward at the same time, and the detection head 68 is exposed. The operator contacts the detection head 68 on the farmland. The detection head 68 is controlled by the controller 3. The soil on the surface of the farmland is detected by the detection head 68. The detected data is transmitted to the display screen 2. The operator can directly view the amount of heavy metals contained in the surface soil of the farmland. After the surface soil of the farmland is detected, the connector 62 is clamped on the scale 1 through the main body 5. According to the required detection depth, the operator pushes down the connector 62. The connector 62 drives the connecting part 61 to move downward. The telescopic adjusting part 64 is extended under the action of the connecting part 6. The second movable arm 657 is rotated on the chuck 653 under the action of the rotating shaft 655. In the movement of the rotating shaft 655, the two rotating blocks 652 swing left and right inside the two limiting sliding seats 651. When the rotating block 652 rotates to a certain position inside the limiting sliding seat 651, the position of the rotating block 652 is limited by the movable stop buckle 658. The movable position of the rotating block 652 is limited by the limiting sliding seat 651. The rotating block 652 is prevented from rotating excessively, so that the first movable arm 654 and the second movable arm 657 are prevented from being folded. The first movable arm 654 and the second movable arm 657 are opened and extended downward with the telescopic adjusting part 64 during the downward movement of the connecting part 61;

[0054] When the deep soil in the farmland is detected, the moving slider 675 is moved upward under the action of the guide rod 674, and the push-pull rod 671 is pulled inward under the action of the moving slider 675, so that the four triangular combined plates R6 are pulled back inward, and the protective cover R2 connected to the four triangular combined plates R6 is annularly connected to the detection head 68 when the four triangular combined plates R6 move inward at the same time. The buffer cushion R1 is directly contacted and attached to the detection head 68, and the buffer cushion R1 has a certain energy absorption effect, which can effectively protect the detection head 68. The buffer cushion R1 is retracted inward when it contacts the detection head 68. The protective cover R2 is pushed inward after being contacted by the buffer cushion R1, and the clamping push block R34 is pushed inward. The clamping push block R34 is pressed and opened outward under the action of the opening and closing part R31, and the pressure is dispersed to the limiting support R33. The limiting support R33 is retracted inward after being pressed, and the limiting support R33 is connected to the limiting strip R32. The elastic pulling force of the limiting strip R32 is large, so that the limiting support R33 retracts inward and generates a certain mutual repulsion between the limiting support R33 and the limiting strip R32, so that the limiting support R33 is not easy to expand and retract after being pressed. The limiting support R33 can effectively support the protective cover R2, so that the four protective covers R2 and the buffer cushion R1 can be fitted and clamped on the detection head 68. The detection head 68 is protected by the protective cover R2 and the buffer cushion R1, and the detection head 68 will not vibrate greatly due to the vibration of the conical head 676 and the soil breaking rod 66 when drilling soil. The detection head 68 can accurately detect the amount of heavy metals contained in the soil of the farmland. The four triangular combined plates R6 form a conical drill bit after being combined, the connecting branch 61 is lowered at the same time, the soil breaking rod 66 is driven to rotate on the connecting branch 61 by the controller 3, and a plurality of soil drilling leaves 69 are spirally installed on the soil breaking rod 66. The soil breaking rod 66 and the soil drilling leaves 69 can cooperate with each other to assist the conical head 676 to drill soil in the soil of the farmland. The conical head 676 is driven to rotate by the soil breaking rod 66, and the four triangular combined plates R6 are tightly pressed together under the action of the sealing gasket R4, so that the inside of the shell R5 forms a closed state. The soil outside the conical head 676 cannot enter the inside of the shell R5 during drilling, and different depths of holes can be drilled in the soil of the farmland quickly and effectively without the need for the operator to dig the soil, which reduces the labor intensity of the workers and improves the detection efficiency of the soil. After the conical head 676 drills to a certain depth, the moving slider 675 is pushed downward by the guide rod 674, the push-pull rod 671 drives the triangular combined plate R6 to open outward under the action of the moving slider 675, the hinge 672 also pulls the triangular combined plate R6 upward, so that the four triangular combined plates R6 are opened outward at the same time, and the detection head 68 is exposed. Then the worker moves the connecting branch 61 downward through the joint 62, so that the detection head 68 can be directly contacted with the soil in the deep layer of the farmland. The amount of heavy metals contained in the deep soil is detected by the detection head 68.The detection head 68 transmits the detected data to the display screen 2, and the operator can compare the heavy metal content in the surface layer of the cultivated land and the deep layer of the cultivated land according to the displayed data, so as to accurately view the heavy metal pollution condition in the cultivated land soil, and customize a treatment scheme according to the heavy metal pollution condition in the soil, and further treat the soil of the cultivated land.

[0055] In conclusion, the application adopts the combination of the scale, the display screen, the controller, the handle, the main body and the detection device to form a new device for accurately determining the heavy metal pollution condition of the cultivated land, when detecting the heavy metal in the soil of the cultivated land, the operator holds the handle and controls the stretching and closing member through the controller, the stretching and closing member and the stretching member extend downward, the breaking rod rotates under the driving of the controller, the soil drilling blade and the breaking rod and the rotary drill bit cooperate with each other to drill holes with different depths in the soil of the cultivated land, then the rotary drill bit is opened to expose the detection head, and the detection head detects the heavy metal content in the soil of the cultivated land with different depths, so that the operator can accurately view the heavy metal pollution condition in the soil of the cultivated land.

[0056] The basic principle and main features of the application and the advantages of the application are shown and described above, and it is obvious for those skilled in the art that the application is not limited to the details of the above exemplary embodiments, and the application can be realized in other specific forms without departing from the spirit or essential characteristics of the application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0057] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. An accurate determination of heavy metal pollution of cultivated land conditions of the device, the structure includes scale (1), display screen (2), controller (3), handle (4), main body (5), detection device (6), characterized by: The scale (1) is connected with the detection device (6) through the main body (5), and the main body (5) is provided with the display screen (2) and the controller (3); the main body (5) is fixedly connected with the handle (4); The detection device (6) comprises a connecting branch (61), a joint (62), a shell (63), a telescopic adjusting piece (64), a opening and closing extension piece (65), a soil breaking rod (66), a rotary drill bit (67), a detection head (68) and a soil drilling blade (69); the telescopic adjusting piece (64) is connected to the connecting branch (61); the opening and closing extension piece (65) is connected with the telescopic adjusting piece (64) and the connecting branch (61); the connecting branch (61) is movably clamped with the soil breaking rod (66); the soil breaking rod (66) is provided with the soil drilling blade (69); the soil breaking rod (66) is fixedly connected with the rotary drill bit (67); the rotary drill bit (67) is provided with the detection head (68); and the joint (62) is connected with the scale (1) through the main body (5). The opening and closing extension piece (65) comprises a limiting sliding seat (651), a rotating block (652), a chuck (653), a first movable arm (654), a rotating shaft (655), a rotating disc (656), a second movable arm (657) and a movable stop buckle (658); the movable stop buckle (658) is arranged on the limiting sliding seat (651); two limiting sliding seats (651) are mounted on the chuck (653); the chuck (653) is fixedly connected with the first movable arm (654); the rotating disc (656) is fixedly connected with the second movable arm (657); the chuck (653) is movably connected with the rotating disc (656) through the rotating shaft (655); the rotating shaft (655) is embedded with the rotating block (652); the rotating block (652) is connected with the movable stop buckle (658) through the limiting sliding seat (651); the first movable arm (654) is connected to the telescopic adjusting piece (64); and the second movable arm (657) is buckled to the connecting branch (61).

2. The device for accurately determining the pollution condition of heavy metals in cultivated land according to claim 1, characterized in that: The rotary drill bit (67) comprises a push-pull rod (671), a hinge (672), a movable cavity (673), a guide rod (674), a moving slider (675) and a conical head (676); the push-pull rod (671) is connected to the moving slider (675) and the conical head (676); the hinge (672) is connected with the conical head (676) and the movable cavity (673); the movable cavity (673) is provided with the guide rod (674) and the moving slider (675); the movable cavity (673) is fixedly connected with the soil breaking rod (66); and the conical head (676) is provided with the detection head (68).

3. The device for accurately determining the pollution condition of heavy metals in cultivated land according to claim 2, characterized in that: The conical head (676) comprises a buffer cushion (R1), a protective cover (R2), a top support assembly (R3), a sealing gasket (R4), a shell (R5), and a triangular plate (R6). The buffer cushion (R1) is attached to the protective cover (R2). The protective cover (R2) is installed on the top support assembly (R3). The top support assembly (R3) is connected to the shell (R5). The shell (R5) is movably connected to the triangular plate (R6). The sealing gasket (R4) is attached to the triangular plate (R6). The triangular plate (R6) is connected to a push-pull rod (671) and a hinge (672). The buffer cushion (R1) is in contact with a detection head (68).

4. The device for accurately determining the pollution condition of heavy metals in cultivated land according to claim 3, characterized in that: The top support assembly (R3) comprises an opening and closing piece (R31), a restraining strip (R32), a limiting support (R33), and a clamping push block (R34). The opening and closing piece (R31) is arranged on the limiting support (R33). The opening and closing piece (R31) is connected to the clamping push block (R34). The limiting support (R33) is provided with the restraining strip (R32). The clamping push block (R34) is installed on the protective cover (R2). The limiting support (R33) is connected to the shell (R5).

5. The device for accurately determining the pollution condition of heavy metals in cultivated land according to claim 1, characterized in that: The soil breaking rod (66) is provided with a plurality of soil drilling leaves (69). The soil drilling leaves (69) are spirally and equidistantly connected to the soil breaking rod (66).

6. The device for accurately determining the pollution condition of heavy metals in cultivated land according to claim 3, characterized in that: The four triangular plates (R6) are all in circular arc triangular structure and connected to form a conical structure.

7. The device for accurately determining the pollution condition of heavy metals in cultivated land according to claim 5, characterized in that: The movable blocking buckle (658) is symmetrically installed in the limiting sliding seat (651) in concave structure.

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