An apparatus and method for measuring soil hydrophobicity

Abstract

The present application relates to the technical field of environmental detection, in particular to a device and method for measuring soil hydrophobicity, comprising a detection frame, a soil taking assembly and a wetting assembly for watering the soil surface; the soil taking assembly comprises a soil taking plate, a soil carrying belt and a soil storage box arranged at the back of the top of the soil carrying belt; the wetting assembly comprises a watering cover embedded above and below the soil storage box, a water tank and a water pumping assembly arranged inside the water tank; when the soil taking plate is extended to shovel into the soil, the soil is carried to the soil storage box by the soil carrying belt as the detection frame moves forward; meanwhile, the forward movement of the detection frame drives the forward movement of the water pumping rod, so that the water in the front half of the water tank is squeezed into the watering pipe and flows back into the rear half of the water tank; in this process, the water flow soaks the sponge and wets the soil in the soil storage box, and then the prepared color card is compared, so that the hydrophobicity of the soil can be obtained.

Description

Technical Field

[0001] This invention relates to the field of environmental testing technology, specifically to a device and method for measuring soil hydrophobicity. Background Technology

[0002] Soil hydrophobicity refers to the incompatibility of the soil surface with water. The presence of soil hydrophobicity is one of the fundamental causes of uneven soil infiltration, leading to finger-like or dominant flows. This results in the spatial separation of water, nutrients, and other solutes, thus affecting plant seed germination, root distribution, and growth, and even influencing the spatial distribution pattern of vegetation. Furthermore, soil hydrophobicity also impacts hydrology and geomorphology, reducing soil infiltration capacity and increasing surface runoff and soil erosion. Therefore, it is necessary to test soil hydrophobicity to determine appropriate remediation measures and eliminate potential risks associated with soil utilization.

[0003] Common methods for testing surface hydrophobicity include measuring surface tension, contact angle, and wettability. The surface tension and contact angle of water droplets on soil are directly proportional to their hydrophobicity, and these measurements require the use of a tensiometer and a contact angle meter. However, hydrophobicity cannot be tested immediately after soil is collected outdoors, and the two methods mentioned above, which use measuring instruments, are more suited for research experiments and not applicable to farmers' own use, thus hindering the widespread management and utilization of soil. Summary of the Invention

[0004] In order to overcome the deficiencies in the prior art, the present invention aims to provide an apparatus and method for measuring soil hydrophobicity, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, on the one hand, the present invention provides a device for measuring soil hydrophobicity, including a testing frame, a soil-collecting component disposed at the front end of the testing frame that can collect soil as the testing frame moves forward, and a wetting component disposed inside the testing frame that allows water to pass through the soil surface.

[0006] The soil sampling assembly includes a soil sampling plate that is inclined downwards, a soil conveying belt placed above the soil sampling plate, a soil storage box placed behind the top of the soil conveying belt, and a push-pull plate at the bottom of the testing frame for driving the soil sampling plate to extend and retract. The soil storage box is inclined backwards and downwards and a box to be tested is inserted inside it. A spring strip for pressing the soil sampling plate downwards is inserted into the inner side of the front end of the testing frame.

[0007] The wetting assembly includes a water inlet cover, a water tank, and a pump assembly installed inside the water tank, all embedded above and below the soil storage box. The top of the water tank is fitted with water pipes that are connected to the front and rear ends of the water inlet cover.

[0008] The pump assembly includes a water valve assembly that is slidably connected to the inner wall of the water tank, a pump rod that penetrates the rear end of the water tank, and a compression spring installed at the rear end of the water tank.

[0009] The short shaft wheel and the long shaft wheel are respectively inserted at the corners of the front and back of the detection frame, the short shaft wheel is rotationally connected with the lower central shaft of the earth carrying belt, and the wheel shaft of the long shaft wheel is engaged with the water pumping rod.

[0010] As a further improvement of the technical solution, the elastic pressing strip is made of steel strip and is in a curved state under no force, the front end of the elastic pressing strip is sleeved with the both sides of the earth taking plate, the both sides of the bottom of the front end of the detection frame are provided with straightly extending limiting grooves, and the elastic pressing strip is inserted with the limiting grooves.

[0011] As a further improvement of the technical solution, the push-pull plate is located at the rear end of the detection frame and the front end surface of the push-pull plate is hingedly connected with a transmission plate, and the transmission plate is hingedly connected with the earth taking plate.

[0012] As a further improvement of the technical solution, the earth carrying belt is made of rubber and a plurality of earth grooves are equidistantly provided on the outer side surface of the earth carrying belt, the inside of the earth groove is in a circular arc surface and one outlet side is in an expanding state, the earth carrying belt is unfolded up and down and a circular shaft is sleeved in the inside of the earth carrying belt, the both ends of the lower circular shaft are sleeved with transmission gears, and the wheel shaft of the short shaft wheel is sleeved with a gear ring engaged with the transmission gears.

[0013] As a further improvement of the technical solution, the guide table sleeved with the bottom of the earth carrying belt is welded between the inner walls of the front end of the detection frame, the positioning strip in a rectangular parallelepiped is embedded at the bottom of the rear end of the detection frame, the lock block engaged with the push-pull plate is sleeved in the positioning strip, the bottom of the lock block is in a circular arc end and the inside of the lock block is provided with a lock hole engaged with the positioning strip, and the bottom of the lock hole is provided with a cylindrical hole rotationally sleeved with the positioning strip.

[0014] As a further improvement of the technical solution, the water passing cover is suspended with a water passing pipe below, a plurality of through holes are provided on the outer side of the water passing pipe, the outer part of the water passing pipe is engaged with a sponge, and the water passing cover is engaged with a water passing box sleeved with a water pipe below.

[0015] As a further improvement of the technical solution, the water valve group comprises a valve ring and a valve cover hingedly connected with the front end top of the valve ring, the end surface boss of the valve cover is engaged with the valve ring, and the one-way valve allowing only water to be discharged is embedded in the top front drainage nozzle of the water tank.

[0016] As a further improvement of the technical solution, the front end of the water pumping rod is closely inserted with the bottom of the valve ring, the middle part of the wheel shaft of the long shaft wheel is annularly and equidistantly provided with a plurality of tooth grooves, and the bottom surface of the rear section of the water pumping rod is equidistantly provided with a plurality of protruding teeth engaged with the plurality of tooth grooves.

[0017] As a further improvement of the technical solution, the compression spring is sleeved with the middle part of the pump water rod, a cover lifting structure in inverted U shape is welded on the rear section of the pump water rod and above the plurality of protruding teeth, a guide shaft is arranged above the front end of the cover lifting structure, a sliding groove is arranged on the middle line of the top surface of the cover lifting structure, a shaft groove is arranged on the front end of the sliding groove and is connected with the guide shaft, and an inclined elastic piece is arranged on the rear end of the cover lifting structure and the top of the inclined elastic piece is higher than the guide shaft.

[0018] In another aspect, the application also provides a measuring method for measuring soil hydrophobicity, comprising the above-mentioned soil hydrophobicity measuring device, and comprising the following steps:

[0019] S1, first, a color card for soil hydrophobicity is prepared according to the wetness determination method, the stronger the wetness, the weaker the soil hydrophobicity, that is, the larger the color and range of soil wetting, and the weaker the wetness, the stronger the soil hydrophobicity, that is, the larger the color and range of soil wetting;

[0020] S2, then the detection frame is pushed to move forward on the soil, at the same time, the forward movement of the detection frame drives the soil taking plate to extend out of the detection frame and to tilt downward under the deformation of the elastic pressing strip, and the soil is contacted and taken;

[0021] S3, with the forward pushing of the detection frame, the soil taking plate continuously introduces the soil, at the same time, the short shaft wheel drives the soil carrying belt to circulate and move to carry the soil on the soil taking plate to a high place and to pour into the detection box;

[0022] S4, at the same time, the long shaft wheel drives the pump water rod to extend into the water tank, and the water is squeezed through the water valve group and gradually rises to the high end of the water pipe to flow downward and to penetrate into the soil in the detection box;

[0023] S5, then the detection box is taken out and is placed for a period of time, and is compared with the color card for soil hydrophobicity in S1, so that the strength of the soil hydrophobicity can be determined.

[0024] Compared with the prior art, the application has the following beneficial effects:

[0025] 1, the soil hydrophobicity measuring device and the measuring method, the soil taking assembly and the wetting assembly are installed in the detection frame, the soil taking plate is used to shovel into the soil when extending out, the soil is carried to the detection box with the forward movement of the detection frame, the pump water rod is driven to move forward with the forward movement of the detection frame, the water in the front half of the water tank is squeezed and discharged into the water pipe and flows back into the rear half of the water tank, in this process, the water flow wets the soil in the detection box through the sponge, and the soil hydrophobicity can be determined by comparing the prepared color card.

[0026] 2. The device and method for measuring soil hydrophobicity, by using the inclined elastic piece to contact the guide shaft, the pump water rod is lifted into the cover, the pump water rod is provided with a plurality of tooth segments, avoiding being stuck by the tooth groove due to the contact with the rotating long shaft wheel shaft, after the guide shaft is slipped from the shaft groove, the pump water rod is dropped back to make the tooth and the tooth groove be clamped, so that the pump water rod is continuously moved forward to pump water with the rotation of the long shaft wheel, and the drainage and water recovery can be automatically reciprocated. BRIEF DESCRIPTION OF DRAWINGS

[0027] The drawings described herein are for the purpose of explanation and are not intended to limit the scope of the present disclosure in any way. Additionally, the shapes and proportions of the components in the drawings are merely illustrative and are used to facilitate the understanding of the present application, and are not specifically limited to the shapes and proportions of the components. Those skilled in the art can select various possible shapes and proportions according to specific circumstances to implement the present application under the guidance of the present application.

[0028] Figure 1 The overall assembly structure of the present application is shown in the figure;

[0029] Figure 2 The overall internal assembly structure of the present application is shown in the figure;

[0030] Figure 3 One of the overall internal assembly structure of the present application is shown in the figure;

[0031] Figure 4 The second overall internal assembly structure of the present application is shown in the figure;

[0032] Figure 5 The space arrangement of the soil taking assembly and the wetting assembly of the present application is shown in the figure;

[0033] Figure 6 The assembly structure of the soil taking assembly of the present application is shown in the figure;

[0034] Figure 7 The assembly structure of the wetting assembly of the present application is shown in the figure;

[0035] Figure 8 The overall structure of the detection frame of the present application is shown in the figure;

[0036] Figure 9 The assembly and disassembly of the soil taking plate of the present application is shown in the figure;

[0037] Figure 10 The assembly and disassembly of the soil carrying belt of the present application is shown in the figure;

[0038] Figure 11 The disassembly of the soil storage box and the detection box of the present application is shown in the figure;

[0039] Figure 12 The assembly and disassembly of the water cover of the present application is shown in the figure;

[0040] Figure 13 The exploded view of the water tank and the pump water assembly of the present application;

[0041] Figure 14 The exploded view of the pump water assembly of the present application.

[0042] The meanings of the respective reference numerals in the drawings are as follows:

[0043] 100, detection frame; 101, limiting groove; 102, positioning strip; 110, short shaft wheel; 111, tooth ring; 120, long shaft wheel; 121, tooth groove; 130, lock block; 131, lock hole; 140, material guiding table;

[0044] 200, soil taking assembly; 210, soil taking plate; 211, elastic pressing strip; 220, soil carrying belt; 221, soil groove; 222, transmission gear; 230, soil storage box; 231, water leakage opening; 240, detection box; 241, screw rod; 250, push-pull plate; 251, transmission plate;

[0045] 300, wetting assembly; 310, water passing cover; 311, water passing pipe; 312, sponge; 313, water passing box; 314, water permeating groove; 320, water tank; 321, water pipe; 322, one-way valve;

[0046] 330, pump water assembly; 331, water valve assembly; 3311, valve ring; 3312, valve cover; 332, pump water rod; 3321, convex tooth; 3322, cover lifting; 3323, inclined elastic sheet; 3324, sliding groove; 3325, shaft groove; 333, compression spring; 340, guide shaft. DETAILED DESCRIPTION

[0047] The details of the present application can be more clearly understood with reference to the drawings and the following description of specific embodiments of the present application. However, the specific embodiments of the present application described herein are intended for purposes of illustration only and are not intended to be limiting in any way. The skilled person can conceive any possible modification based on the present application under the teaching of the present application, which should be considered as falling within the scope of the present application. The terms "mounting", "connecting" should be interpreted broadly, which can be directly connected or indirectly connected through an intermediate medium.

[0048] The terms "central axis", "vertical", "horizontal", "front", "back", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer" and the like as used herein to indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, in the description of the present application, the meaning of "several" is two or more, unless otherwise explicitly and specifically limited.

[0049] Please refer to Figures 1-14 As shown in the drawings, the present application provides a device and a method for measuring soil hydrophobicity, which comprises a detection frame 100, a soil taking assembly 200 arranged in the front end of the detection frame 100 and capable of taking soil as the detection frame 100 moves forward, and a wetting assembly 300 arranged inside the detection frame 100 and capable of wetting the soil surface;

[0050] The determination method of wetting property: judging according to the wetting property of liquid on the soil surface; the stronger the wetting property, the weaker the soil hydrophobicity, i.e. the larger the color and range of soil wetting, and the weaker the wetting property, the stronger the soil hydrophobicity, i.e. the larger the color and range of soil wetting.

[0051] Specifically, the soil taking assembly 200 comprises a soil taking plate 210 arranged in a downward manner, a soil carrying belt 220 arranged above the soil taking plate 210, a soil storage box 230 arranged at the top rear of the soil carrying belt 220, and a push-pull plate 250 arranged at the bottom of the detection frame 100 and used to drive the soil taking plate 210 to extend and retract;

[0052] The soil taking plate 210 in the outwardly extended and downwardly inclined state is inserted into the soil layer, and the soil is slid onto the soil carrying belt 220 as the detection frame 100 moves forward, and then is carried to the soil storage box 230 to accumulate into a sample, which is convenient and automatic.

[0053] Further, the soil storage box 230 is inclined downwardly and rearwardly, and a detection box 240 is inserted into the soil storage box 230, and the two sides of the soil storage box 230 are welded to the inner wall of the detection frame 100; the soil sample is taken out by taking out the detection box 240 for comparison and judgment, and a screw rod 241 is threadedly connected to the downward end of the detection box 240, and a threaded ring is welded to the downward end of the soil storage box 230 and threadedly connected to the screw rod 241, so as to limit the downward sliding of the detection box 240;

[0054] The detection frame 100 is provided with a springing strip 211 inserted into the inner side of the front end of the detection frame 100 and used to spring and press the soil taking plate 210 to incline downwardly, so that the soil taking plate 210 pushed out by the push-pull plate 250 inclines downwardly under the restoration deformation of the springing strip 211, and automatically shovels soil as the detection frame 100 moves forward.

[0055] Further, short shaft wheels 110 and long shaft wheels 120 are respectively inserted at the corners of the front and rear sides of the detection frame 100, the short shaft wheels 110 are rotationally connected with the lower central shaft of the soil carrying belt 220, and the short shaft wheels 110 are rolled on the soil by the pushing of the detection frame 100, thereby driving the soil carrying belt 220 to move in a cycle to carry soil.

[0056] Specifically, the elastic pressing strip 211 is made of steel and is in a curved state under no force, the front end of the elastic pressing strip 211 is sleeved with the two sides of the soil taking plate 210, the bottom of the front end of the detection frame 100 is provided with a limiting groove 101 extending in a straight line, and the elastic pressing strip 211 is inserted with the limiting groove 101, so that after the soil taking plate 210 is retracted into the detection frame 100, the elastic pressing strip 211 can be hidden and stored along the limiting groove 101.

[0057] The push-pull plate 250 is located at the rear end of the detection frame 100 and the front end surface thereof is hingedly connected with a transmission plate 251, after the push-pull plate 250 pulls the soil taking plate 210 to retract, the push-pull plate 250 is folded upward and clamped with the detection frame 100 for storage, and the push-pull plate 250 does not occupy space; the transmission plate 251 is hingedly connected with the soil taking plate 210, so that the soil taking plate 210 can be inclined under the elastic force of the elastic pressing strip 211 after being extended outward.

[0058] Further, the soil carrying belt 220 is made of rubber and a plurality of soil grooves 221 are equally spaced on the outer side surface thereof, the inside of the soil groove 221 is a circular arc surface, and one outlet edge thereof is an expanding inclined surface, which is naturally turned to the high end of the soil storage box 230, so as to smoothly pour the soil into the soil storage box 230;

[0059] The soil carrying belt 220 is unfolded upward and downward and a circular shaft is sleeved inside, the transmission gears 222 are sleeved at both ends of the lower circular shaft, the shaft of the short shaft wheel 110 is sleeved with a gear ring 111 engaged with the transmission gears 222, so that the short shaft wheel 110 is rolled on the soil to drive the soil carrying belt 220 to move in a cycle to carry soil.

[0060] In addition, the guide table 140 is welded between the inner walls of the front end of the detection frame 100 and is sleeved with the bottom of the soil carrying belt 220, which is used to transition the gap between the soil taking plate 210 and the soil carrying belt 220, and to block the lower side surface of the soil carrying belt 220 close to the soil storage box 230, so as to avoid a small amount of soil particles from falling into the inside of the detection frame 100 and shorten the cleaning cycle;

[0061] The bottom rear end of the testing frame 100 is fitted with a rectangular positioning strip 102. Inside the positioning strip 102, there is a locking block 130 that engages with the push-pull plate 250. The bottom of the locking block 130 is rounded and has a locking hole 131 inside that engages with the positioning strip 102. The bottom of the locking hole 131 has a cylindrical hole that rotates with the positioning strip 102. The rear end of the push-pull plate 250 has a square opening. When the locking block 130 is rotated up and the locking hole 131 engages with the positioning strip 102, the upper part of the locking block 130 abuts against the inside of the square opening of the push-pull plate 250, thereby abutting the soil-collecting plate 210 and stabilizing its soil-collecting.

[0062] Specifically, the wetting component 300 includes a water-permeable cover 310 embedded above and below the soil storage box 230, a water tank 320, and a pump assembly 330 installed inside the water tank 320. The top and bottom of the water tank 320 are fitted with water pipes 321 that are connected to the front and rear ends of the water-permeable cover 310. The bottom support of the water tank 320 is welded to the inner walls on both sides of the testing frame 100. The pump assembly 330 pumps water from the front half of the water tank 320 into the high end of the water-permeable cover 310 and recovers water from its low end to the rear half of the water tank 320 for recycling. The top of the rear end of the water tank 320 is provided with a water injection hole to replenish the water for wetting the soil.

[0063] In addition, the water pump assembly 330 includes a water valve assembly 331 that is slidably connected to the inner wall of the water tank 320, a water pump rod 332 that penetrates the rear end of the water tank 320, and a compression spring 333 provided at the rear end of the water tank 320. The compression spring 333 rebounds the water pump rod 332 to circulate water pumping and draining within the water tank 320. The axle of the long shaft wheel 120 meshes with the water pump rod 332 for transmission. The water pump assembly 330 is driven by the movement of the detection frame 100, which saves time and effort and completes the wetting in one step.

[0064] Furthermore, a rectangular drain hole 231 is provided on the front and back center line of the top of the soil storage box 230. The bottom of the water box 313 is engaged with the drain hole 231, and several seepage grooves 314 are provided at equal intervals on the bottom surface of the water box 313, so that the water in the water box 313 can seep into the test box 240 and moisten the soil surface.

[0065] A water pipe 311 is suspended below the water pipe cover 310. Several through holes are opened on the outside of the water pipe 311. A sponge 312 is snapped onto the outside of the water pipe 311. A water box 313 that is connected to the water pipe 321 is snapped onto the bottom of the water pipe cover 310. By utilizing the water absorption of the sponge 312, water slowly seeps into the soil surface inside the test box 240, while a large amount of water flows down into the water tank 320.

[0066] In addition, the water valve group 331 comprises a valve ring 3311 and a valve cover 3312 hinged to the top of the front end of the valve ring 3311, and a silica gel ring is bonded to the outer side of the valve ring 3311 for sealing the inner wall of the water tank 320; the end face boss of the valve cover 3312 is clamped with the valve ring 3311, so that when the water pumping rod 332 moves forward, the valve cover 3312 is tightly closed with the valve ring 3311, and the water in the front half of the water tank 320 is pushed to the front water pipe 321 and discharged; a one-way valve 322 for discharging water only is embedded in the top front end of the water tank 320, and the one-way valve 322 is a prior art and will not be described here.

[0067] Further, the front end of the water pumping rod 332 is tightly inserted with the bottom of the valve ring 3311, and a plurality of tooth grooves 121 are arranged in the middle of the wheel shaft of the long shaft wheel 120 in an annular and equidistant manner, and the bottom surface of the rear segment of the water pumping rod 332 is provided with a plurality of protruding teeth 3321 clamped with the plurality of tooth grooves 121 in an equidistant manner;

[0068] When the protruding teeth 3321 all pass through the tooth grooves 121 after the water pumping rod 332 moves forward, the compression spring 333 rebounds to drive the water pumping rod 332 to move backward and reset, and the water in the rear half of the water tank 320 is flushed to open the valve cover 3312 and enters the front half of the water tank 320 for replenishment.

[0069] It is worth mentioning that the compression spring 333 is sleeved with the middle part of the water pumping rod 332, and the rear segment of the water pumping rod 332 and above the plurality of protruding teeth 3321 is welded with a reverse U-shaped structure of the cover lifting 3322, the front end of the cover lifting 3322 is provided with a guide shaft 340, the guide shaft 340 is horizontally suspended, and the guide shaft 340 is welded with a horizontal rod above and the horizontal rod is embedded in the inner wall of the detection frame 100, so that the guide shaft 340 is stably suspended;

[0070] The top surface of the cover lifting 3322 is provided with a sliding groove 3324 on the front-rear middle line, and the front end of the sliding groove 3324 is provided with a shaft groove 3325 clamped with the guide shaft 340, and the rear end of the cover lifting 3322 is provided with an inclined elastic piece 3323, and the top of the inclined elastic piece 3323 is higher than the guide shaft 340;

[0071] When the water pumping rod 332 rebounds, the inclined elastic piece 3323 contacts the guide shaft 340, so that the guide shaft 340 slides into the cover lifting 3322, and the water pumping rod 332 is lifted to the segment provided with the plurality of protruding teeth 3321, so as to avoid being clamped by the tooth grooves 121 of the rotating long shaft wheel 120 shaft, and after the guide shaft 340 slides off the shaft groove 3325, the water pumping rod 332 falls and rebounds to make the protruding teeth 3321 clamped with the tooth grooves 121, so that the water pumping rod 332 continues to move forward to pump water with the rotation of the long shaft wheel 120, and the water discharge and water recovery can be automatically reciprocated.

[0072] The measurement method for measuring soil hydrophobicity of the application comprises the following steps:

[0073] S1, first according to the wetting method to make soil hydrophobicity colorimetric card, namely to the existing different degree of hydrophobic soil on the drop wet, record the color and range of soil wetting, and make colorimetric card; Wetting strong, soil hydrophobicity is weak, that is, the color and range of soil wetting is large, wetting is weak, that is, the color and range of soil wetting is large;

[0074] S2, then push the detection frame 100 forward on the soil, while the forward push and pull plate 250 drive the soil plate 210 to extend out of the detection frame 100, and under the deformation of the elastic pressure strip 211, it is inclined downward, and contacts the soil and takes the soil;

[0075] S3, with the forward push of the detection frame 100, the soil plate 210 continuously introduces soil, while the short shaft wheel 110 drives the soil belt 220 to circulate and moves the soil on the soil plate 210 to a high place, and pours into the detection box 240 and fills up;

[0076] S4, while the long shaft wheel 120 drives the pump rod 332 to extend into the water tank 320, and the water valve group 331 extrudes water to gradually rise to the high end of the water pipe 311 and flow downward, then the soil in the detection box 240;

[0077] S5, then take out the detection box 240 and stand for a period of time, and compare with the colorimetric card of soil hydrophobicity in S1, then the strength of the soil hydrophobicity can be judged.

[0078] It should be noted that the above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. An apparatus for measuring soil hydrophobicity, characterized by: Including detection frame (100), the soil taking assembly (200) that can shovel soil with detection frame (100) front movement is arranged in the front end of detection frame (100) and the wetting assembly (300) that the soil surface is arranged in the inside of detection frame (100) with water, The soil taking assembly (200) includes the soil taking plate (210) that is arranged in a downward manner, the soil carrying belt (220) above the soil taking plate (210), the soil storage box (230) behind the top of the soil carrying belt (220) and the push-pull plate (250) arranged at the bottom of the detection frame (100) for driving the telescopic soil taking plate (210), the soil storage box (230) is inclined backward and downward, and the inside of the soil storage box (230) is inserted with a detection box (240), the inside of the front end of the detection frame (100) is inserted with a springing strip (211) for springing the downward soil taking plate (210). The wetting assembly (300) includes a water cover (310) embedded above and below the soil storage box (230), a water tank (320) and a water pumping group (330) arranged inside the water tank (320), and the top of the water tank (320) is sleeved with a water pipe (321) connected to the front and rear ends of the water cover (310). The water pumping group (330) includes a water valve group (331) slidingly connected to the inner wall of the water tank (320), a water pumping rod (332) penetrating through the rear end of the water tank (320) and a compression spring (333) arranged at the rear end of the water tank (320). The short shaft wheel (110) and the long shaft wheel (120) are respectively inserted at the corners of the front and rear sides of the detection frame (100), the short shaft wheel (110) is rotationally connected to the lower central shaft of the soil carrying belt (220), and the wheel shaft of the long shaft wheel (120) is engaged with the water pumping rod (332) for transmission. The water valve group (331) includes a valve ring (3311) and a valve cover (3312) hinged to the top of the front end of the valve ring (3311), the end face boss of the valve cover (3312) is clamped with the valve ring (3311), and the one-way valve (322) allowing only water to be discharged is embedded in the drainage nozzle at the top of the front end of the water tank (320). The front end of the water pumping rod (332) is tightly inserted with the bottom of the valve ring (3311), the middle part of the wheel shaft of the long shaft wheel (120) is annularly and equidistantly provided with a plurality of tooth grooves (121), and the bottom surface of the rear segment of the water pumping rod (332) is equidistantly provided with a plurality of protruding teeth (3321) clamped with the plurality of tooth grooves (121).

2. The apparatus for measuring soil hydrophobicity according to claim 1, wherein: The springing strip (211) is made of steel bar and is in a curved state under no force, the front end of the springing strip (211) is sleeved with the two sides of the soil taking plate (210), and the front end of the detection frame (100) is provided with a limiting groove (101) extending in a straight line on both sides, and the springing strip (211) is inserted with the limiting groove (101).

3. The apparatus for measuring soil hydrophobicity according to claim 2, wherein: The push-pull plate (250) is located at the rear end of the detection frame (100), and the front end surface of the push-pull plate (250) is hinged with a transmission plate (251), and the transmission plate (251) is hinged with the soil taking plate (210).

4. The apparatus for measuring soil hydrophobicity according to claim 3, wherein: The earth moving belt (220) is made of rubber and a plurality of earth grooves (221) are equidistantly arranged on the outer side of the earth moving belt (220), the inner part of the earth groove (221) is a circular arc surface, one outlet side of the earth groove (221) is an inclined surface in an expanding state, the earth moving belt (220) is unfolded upwards and a circular shaft is sleeved in the earth moving belt (220), the transmission gear (222) is sleeved on both ends of the lower circular shaft, and the wheel shaft of the short shaft wheel (110) is sleeved with the gear ring (111) engaged with the transmission gear (222).

5. The apparatus for measuring soil hydrophobicity according to claim 4, wherein: The guide table (140) is welded on the inner wall between the front end of the detection frame (100) and the bottom of the earth moving belt (220), the positioning strip (102) is embedded at the rear end of the detection frame (100) and is a cuboid, the lock block (130) is sleeved in the positioning strip (102) and is clamped with the push-pull plate (250), the bottom of the lock block (130) is a circular arc end, the inner part of the lock block (130) is provided with the lock hole (131) clamped with the positioning strip (102), and the bottom of the lock hole (131) is provided with the cylindrical hole rotationally sleeved with the positioning strip (102).

6. The apparatus for measuring soil hydrophobicity according to claim 5, wherein: The water passing pipe (311) is suspended below the water passing cover (310), a plurality of through holes are arranged on the outer side of the water passing pipe (311), the sponge (312) is clamped on the outer part of the water passing pipe (311), and the water passing box (313) is clamped on the lower part of the water passing cover (310) and is sleeved with the water pipe (321).

7. The apparatus for measuring soil hydrophobicity according to claim 6, wherein: The compression spring (333) is sleeved with the pump water rod (332), the inverted U-shaped cover (3322) is welded on the rear section of the pump water rod (332) and is located above the plurality of protrusions (3321), the guide shaft (340) is arranged on the front end of the cover (3322), the sliding groove (3324) is arranged on the top surface of the cover (3322) and is located on the front-rear center line, the front end of the sliding groove (3324) is provided with the shaft groove (3325) clamped with the guide shaft (340), and the rear end of the cover (3322) is provided with the inclined elastic piece (3323) inclined upward, and the top of the inclined elastic piece (3323) is higher than the guide shaft (340).

8. A method of measuring soil hydrophobicity using the apparatus for measuring soil hydrophobicity according to claim 7, characterized by: The method comprises the following steps: S1, first, a colorimetric card of soil hydrophobicity is made according to the wetting method, the stronger the wetting, the weaker the soil hydrophobicity, that is, the larger the color and range of soil wetting, and the weaker the wetting, the stronger the soil hydrophobicity, that is, the larger the color and range of soil wetting; S2, then, the detection frame (100) is pushed forward on the soil, the push-pull plate (250) drives the soil taking plate (210) to extend out of the detection frame (100) and to be downwardly inclined under the deformation elastic pressure of the elastic pressing strip (211) to contact the soil and take the soil; S3, with the forward pushing of the detection frame (100), the soil taking plate (210) continuously introduces the soil, the short shaft wheel (110) drives the earth moving belt (220) to circularly move to move the soil on the soil taking plate (210) to a high place and pour the soil into the detection box (240) to be filled; S4, at the same time, the long shaft wheel (120) drives the pump water rod (332) to extend into the water tank (320), the water valve group (331) squeezes and discharges the water to the high end of the water passing pipe (311) to flow downward, and then the water is infiltrated into the soil in the detection box (240). S5, the soil hydrophobicity of the test box (240) is taken out again, and is compared with the colorimetric card in S1 after a period of time, so that the strength of the soil hydrophobicity can be judged.

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