Soil water and salt monitoring device

Abstract

The utility model relates to a soil water and salt monitoring device which comprises a drill rod, a monitoring probe and a drill bit, the outer side wall of the bottom of the drill rod is fixedly connected with a guide column in the radial direction, the monitoring probe is installed at the bottom of the drill rod, an assembly groove is formed in the top end of the drill bit, and the bottom of the drill rod is located in the assembly groove and is in clearance fit with the assembly groove. A long-strip-shaped guide groove is formed in the side wall face of the assembling groove, the guide column is slidably connected into the guide groove, the guide groove is arranged in the axial direction of the drill bit, the two ends of the guide groove extend in the forward rotation direction of the drill bit to form limiting grooves, the drill bit is away from the drill rod, and the distance between the center lines of the two limiting grooves is larger than the distance between the monitoring probe and the top end of the drill bit. When the guide column is switched into the limiting groove in the top from the limiting groove in the lower portion, the monitoring probe is exposed out of the assembling groove, and the technical problems that a traditional water and salt monitoring device is not suitable for loose soil and the monitoring probe may be damaged are solved.

Description

Technical Field

[0001] This utility model relates to the field of soil testing, and more specifically to a soil water and salt monitoring device. Background Technology

[0002] In existing technologies, soil water and salt content measurements are used to assess the physicochemical properties of soil, fertility, and impact on plant growth; to improve monitoring accuracy, monitoring is usually conducted at a certain depth in the soil layer.

[0003] Traditional water and salt monitoring devices require drilling holes and inserting the device into the holes to monitor soil layers at a certain depth, or drilling a drill bit with a monitoring probe mounted on its surface into the soil. The former is complicated to operate and is not suitable for loose soil, while the latter may damage the monitoring device if the monitoring probe, which rotates with the drill bit, comes into contact with hard materials such as stones in the soil during the process of penetrating the soil.

[0004] Therefore, how to provide a new soil water and salt monitoring device in which the monitoring probe is housed inside the device during its drilling into the soil, and the monitoring device can be released after drilling to a specified depth, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a soil water and salt monitoring device, which aims to solve the technical problems that the above-mentioned traditional water and salt monitoring devices are not suitable for loose soil and may damage the monitoring probe.

[0006] A soil water and salinity monitoring device, comprising:

[0007] The drill pipe is a hollow rod with guide posts fastened to its bottom outer wall along its radial direction.

[0008] The probe telescopic assembly is installed at the bottom of the drill pipe, and its telescopic end passes through the side wall of the drill pipe.

[0009] The monitoring probe, and the telescopic end of the probe telescopic assembly is installed on the monitoring probe;

[0010] The drill bit has an assembly groove at its top, and the bottom of the drill rod is located in the assembly groove and is clearance-fitted with it. The side wall of the assembly groove has an elongated guide groove, and the guide post is slidably connected in the guide groove. The guide groove is arranged along the axial direction of the drill bit, and both ends of the guide groove extend into limit grooves along the positive rotation direction of the drill bit. The distance between the center lines of the two limit grooves is greater than the distance between the monitoring probe and the top of the drill bit.

[0011] The limiting groove near the bottom of the assembly slot provides support for the transmission between the drill rod and the drill bit during the deep drilling process. After the drill bit rotates to the specified depth, the external force rotates the drill rod in the opposite direction and pulls it up, separating the drill bit from the drill rod.

[0012] The limiting groove near the opening of the assembly groove in the guide groove is used to maintain the relative position of the drill bit and drill rod after they are separated.

[0013] Through the above technical solution, this utility model limits the relative movement between the bottom end of the drill rod and the drill bit through a guide post and a guide groove. The guide post is slidably connected in the guide groove, which is arranged along the axial direction of the drill bit. Both ends of the guide groove extend into limiting grooves along the forward rotation direction of the drill bit. The distance between the center lines of the two limiting grooves is greater than the distance between the monitoring probe and the top of the drill bit. Thus, during the deep drilling process, the limiting post is located in the limiting groove at the bottom end. After the drill bit reaches the specified depth, the drill rod is manually rotated in the reverse direction to allow the limiting post to enter the guide groove at the top through the vertical connecting groove. The side wall portion at the bottom end of the drill rod, where the monitoring probe is located, is exposed to the soil for soil monitoring, thus providing strong protection capabilities.

[0014] Preferably, there are multiple guide posts and guide grooves, which are evenly arranged around the axis of the drill bit.

[0015] Preferably, the limiting groove includes a probe monitoring limiting groove and a probe hiding limiting groove at both ends of the corresponding guide groove. The probe monitoring limiting groove, the guide groove and the probe hiding limiting groove are connected in sequence to form a U-shape. The guide groove is arranged along the drill bit axis, and the probe monitoring limiting groove and the probe hiding limiting groove are arranged circumferentially along the axis of the drill bit and are located on the same side of the guide groove corresponding to the positive rotation direction of the drill bit.

[0016] Preferably, the length of the probe's hidden limiting groove is greater than the length of the probe's monitoring limiting groove.

[0017] Preferably, an annular recess is formed on the outer side of the bottom end of the drill rod in the direction of its center. The annular recess at the bottom end of the drill rod is located in the assembly groove, and its wall surface is in clearance fit with the side wall of the assembly groove. The drill bit and the drill rod are on the same annular surface, and the monitoring probe is installed on the bottom surface of the annular recess.

[0018] Preferably, the drill rod is hollow inside and has a through bottom, and a mounting plate is fastened to the inner sidewall near its bottom opening; the probe telescopic assembly includes a sliding connecting rod, a probe connecting rod, a connecting block, a spring, and a connecting rod. The sliding connecting rod is coaxially arranged with the drill rod, and its first end is slidably connected to the mounting plate along the axial direction of the drill rod, and its second end contacts and abuts against the bottom surface of the assembly groove; a sliding hole is opened on the wall of the annular recess, and the first end of the probe connecting rod slides and extends into the sliding hole and extends outward to install the monitoring probe; the connecting block is fastened to the outer surface of the sliding connecting rod; the spring is sleeved on the outer surface of the sliding connecting rod, and the two ends of the spring contact and abut against the opposite surfaces of the mounting plate and the connecting block, respectively; one end of the connecting rod is hinged to the second end of the probe connecting rod, and the other end is hinged to the connecting block.

[0019] Preferably, there are two probe connecting rods, which are symmetrically arranged on both sides of the sliding connecting rod.

[0020] Preferably, a power input head and a monitoring output port are fastened to the top of the drill pipe, and the monitoring output port is electrically connected to the monitoring probe.

[0021] Preferably, the mounting plate has a sliding hole along the axis of the drill rod, and the first end of the sliding connecting rod is slidably connected to the sliding hole and passes through the sliding hole into the cavity inside the drill rod.

[0022] Preferably, it also includes a limiting block, which is fastened to the first end of the sliding connecting rod and located in the cavity inside the drill pipe to limit the stroke of the sliding connecting rod.

[0023] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a soil water and salt monitoring device, which has the following beneficial effects:

[0024] 1. During rotation, the monitoring probe is located inside the assembly slot and does not come into contact with the soil to avoid unnecessary collisions with other hard materials in the soil during deep drilling, which could cause damage. Attached Figure Description

[0025] Figure 1 A partial cross-sectional view of a soil water and salt monitoring device (in an unseparated state) provided by this utility model;

[0026] Figure 2 A top view of the drill pipe provided by this utility model;

[0027] Figure 3 for Figure 2 EE sectional view;

[0028] Figure 4 A three-dimensional schematic diagram of the drill bit provided by this utility model;

[0029] Figure 5 A top view of the drill bit provided by this utility model;

[0030] Figure 6 for Figure 5 DD sectional view;

[0031] Figure 7 for Figure 1 A magnified view of a portion at point A;

[0032] Figure 8 for Figure 1 A magnified view of a portion at point B;

[0033] Figure 9 A partial cross-sectional view of a soil water and salt monitoring device (in a separated state) provided by this utility model;

[0034] Figure 10 for Figure 9 A magnified view of a portion of point C.

[0035] Wherein: 1-Drill rod; 2-Drill bit; 3-Linkage assembly; 12-Annular recess; 13-Sliding hole; 14-Power input head; 15-Monitoring output port; 16-Guide post; 21-Assembly slot; 22-Guide slot; 31-Sliding connecting rod; 32-Connecting block; 33-Spring; 34-Probe connecting rod; 35-Connecting rod; 36-Monitoring probe; 37-Limiting block; 38-Mounting plate; 221-Probe monitoring limit slot; 223-Probe hidden limit slot; 381-Sliding hole one. Detailed Implementation

[0036] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0037] See appendix Figure 1-10 This utility model discloses a soil water and salt monitoring device, including: a drill rod 1, a probe telescopic assembly 3, a monitoring probe 36, and a drill bit 2;

[0038] Drill rod 1 is a hollow rod, and a guide post 16 is fastened to its bottom outer wall along its radial direction;

[0039] The probe telescopic assembly 3 is installed at the bottom of the drill rod 1, and its telescopic end passes through the side wall of the drill rod 1;

[0040] The telescopic end of the probe telescopic assembly 3 is installed on the monitoring probe 36.

[0041] The top of the drill bit 2 is provided with an assembly groove 21, the bottom of the drill rod 1 is located in the assembly groove 21 and is clearance-fitted with it, the side wall of the assembly groove 21 is provided with an elongated guide groove 22, the guide post 16 is slidably connected in the guide groove 22, the guide groove 22 is arranged along the axial direction of the drill bit 2, and the two ends of the guide groove 22 extend into limit grooves along the positive rotation direction of the drill bit 2. The distance between the center lines of the two limit grooves is greater than the distance between the monitoring probe 36 and the top of the drill bit 2.

[0042] The limiting groove near the bottom of the assembly slot 21 provides support for the transmission between the drill rod 1 and the drill bit 2 during the deep drilling process of the drill bit 2. After the drill bit 2 rotates to the specified depth, the external force rotates the drill rod 1 in the opposite direction and pulls it up, and the drill bit 2 separates from the drill rod 1.

[0043] The limiting groove in the guide groove 22 near the opening of the assembly groove 21 is used to maintain the relative position of the drill bit 2 and the drill rod 1 after they are separated.

[0044] In some embodiments, there are multiple guide posts 16 and guide grooves 22, evenly arranged around the axis of the drill bit 2. This results in greater stability during rotation and movement.

[0045] Specifically, a guide post sliding hole is provided on the outer surface of the drill bit 2 at the position corresponding to the guide groove 22, and the guide post 16 is pinned to the annular recess 12, thereby facilitating the installation of the guide post 16.

[0046] In other embodiments, the limiting groove includes a probe monitoring limiting groove 221 and a probe hiding limiting groove 223 corresponding to both ends of the guide groove 22. The probe monitoring limiting groove 221, the guide groove 22 and the probe hiding limiting groove 223 are connected in sequence to form a U-shape. The guide groove 22 is arranged along the axial direction of the drill bit 2. The probe monitoring limiting groove 221 and the probe hiding limiting groove 223 are arranged circumferentially along the axis of the drill bit 2 and are located on the same side of the guide groove 22 corresponding to the positive rotation direction of the drill bit 2.

[0047] In one embodiment, the length of the probe concealment limiting groove 223 is greater than the length of the probe monitoring limiting groove 221. Therefore, it is possible to determine whether the guide post 16 is located in the probe concealment limiting groove 223 or the probe monitoring limiting groove 221 based on the rotation angle of the drill rod 1, facilitating judgment by operators on the ground.

[0048] In one embodiment, an annular recess 12 is formed by recessing the outer side of the bottom end of the drill rod 1 towards its center. The annular recess 12 at the bottom end of the drill rod 1 is located in the assembly groove 21, and its wall surface is in clearance fit with the side wall of the assembly groove. The drill bit 2 and the drill rod 1 are on the same annular surface, and the monitoring probe 36 is installed on the bottom surface of the annular recess 12.

[0049] In some specific embodiments, the drill rod 1 is hollow inside and has a through bottom, and an mounting plate 38 is fastened to the inner sidewall near its bottom opening; the probe telescopic assembly 3 includes a sliding connecting rod 31, a probe connecting rod 34, a connecting block 32, a spring 33, and a connecting rod 35. The sliding connecting rod 31 is coaxially arranged with the drill rod 1, and its first end is slidably connected to the mounting plate 38 along the axial direction of the drill rod 1, and its second end is in contact with the bottom surface of the assembly groove 21; a sliding hole 13 is provided on the wall of the annular recess 12, and the first end of the probe connecting rod 34 slides and extends in the sliding hole 13 and extends outward to the outside of the annular recess 12 to install a monitoring probe 36; the connecting block 32 is fastened to the outer surface of the sliding connecting rod 31; the spring 33 is sleeved on the outer surface of the sliding connecting rod 31, and the two ends of the spring 33 are in contact with the opposite surfaces of the mounting plate 38 and the connecting block 32, respectively; one end of the connecting rod 35 is hinged to the second end of the probe connecting rod 34, and the other end is hinged to the connecting block 32.

[0050] Specifically, mounting plate 38 is welded inside drill pipe 1.

[0051] More specifically, the spring 33 located between the mounting plate 38 and the connecting block 32 is in a compressed state, and its unfolding stroke is greater than the distance between the center lines of the probe monitoring limit groove 221 and the probe hiding limit groove 223.

[0052] In this embodiment, there are two probe connecting rods 34, symmetrically arranged on both sides of the sliding connecting rod 31. This results in a more balanced force distribution on the sliding connecting rod 31.

[0053] In some specific embodiments, a power input head 14 and a monitoring output port 15 are fastened to the top of the drill pipe 1. Thus, an external power device can be connected to the power input head 14 to drive the drill pipe 1 to rotate.

[0054] In some other embodiments, the monitoring output port 15 is electrically connected to the monitoring probe 36.

[0055] Specifically, it also includes a soil water and salt monitor, which is electrically connected to the monitoring output port 15. Therefore, the split design facilitates drill rod operation and simplifies the structure.

[0056] In some other specific embodiments, the mounting plate 38 has a sliding hole 381 along the axis of the drill rod 1, and the first end of the sliding connecting rod 31 is slidably connected to the sliding hole 381 and passes through the sliding hole 381 in the cavity inside the drill rod 1.

[0057] In some specific embodiments, a limiting block 37 is also included. The limiting block 37 is fastened to the first end of the sliding connecting rod 31 and located in the cavity inside the drill rod 1 to limit the stroke of the sliding connecting rod 31. Thus, the sliding connecting rod 31 can be precisely limited by the limiting block 37, reducing the machining accuracy of the bottom surface of the assembly groove 21 and the guide groove 22, and saving costs.

[0058] The specific principle and usage method of the soil water and salinity monitoring device provided in this embodiment are as follows:

[0059] 1. Slide the guide post 16 into the probe concealment limiting groove 223, along... Figure 4 Rotate drill rod 1 clockwise in the indicated orientation;

[0060] 2. Continue rotating drill bit 2 until it reaches the specified depth;

[0061] 3. External force rotates the drill rod 1 counterclockwise and pulls it upward, so that the guide column 16 slides through the vertical channel of the guide groove 22 into the probe monitoring limit groove 221;

[0062] 4. During the movement in step 3 above, the second end of the sliding connecting rod 31 that is in contact with the bottom surface of the assembly groove 21 of the drill bit 2 is released, the spring 33 pushes the connecting block 32 to move downward, and the connecting block 32 converts the force of the sliding connecting rod 31 along the axial direction of the drill rod 1 into a force along the radial direction of the drill rod 1 through the connecting rod 35, which pushes the probe connecting rod 34, on which the monitoring probe 36 is installed, to protrude out of the groove surface of the annular recess 12 and contact the soil.

[0063] 5. Connect the soil water and salt monitor to the monitoring output port 15 for monitoring.

[0064] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A soil water and salt monitoring device, characterized by, include: Drill rod (1), the drill rod (1) is a hollow rod, and a guide post (16) is fastened to its bottom outer side wall along its radial direction; The probe telescopic assembly (3) is installed at the bottom of the drill rod (1), and its telescopic end passes through the side wall of the drill rod (1); A monitoring probe (36) is installed on the telescopic end of the probe telescopic assembly (3); The drill bit (2) has an assembly groove (21) at its top end. The bottom of the drill rod (1) is located in the assembly groove (21) and is clearance-fitted with it. The side wall of the assembly groove (21) has a long guide groove (22). The guide post (16) is slidably connected in the guide groove (22). The guide groove (22) is arranged along the axial direction of the drill bit (2). Both ends of the guide groove (22) extend into limit grooves along the positive rotation direction of the drill bit (2). The distance between the center lines of the two limit grooves is greater than the distance between the monitoring probe (36) and the top end of the drill bit (2). The limiting groove near the bottom of the assembly groove (21) provides support for the transmission between the drill rod (1) and the drill bit (2) during the deep drilling process of the drill bit (2). After the drill bit (2) is rotated to a specified depth, the external force rotates the drill rod (1) in the opposite direction and pulls it up, and the drill bit (2) separates from the drill rod (1). The limiting groove in the guide groove (22) near the opening of the assembly groove (21) is used to maintain the relative position of the drill bit (2) and the drill rod (1) after they are separated.

2. The soil water and salt monitoring device according to claim 1, characterized in that, The number of guide posts (16) and guide grooves (22) is multiple, and they are evenly arranged around the axis of the drill bit (2). 3.The soil water and salt monitoring device according to claim 1 or 2, characterized in that, The limiting groove includes a probe monitoring limiting groove (221) and a probe hiding limiting groove (223) corresponding to both ends of the guide groove (22). The probe monitoring limiting groove (221), the guide groove (22), and the probe hiding limiting groove (223) are connected in sequence to form a U-shape. The guide groove (22) is arranged along the axial direction of the drill bit (2). The probe monitoring limiting groove (221) and the probe hiding limiting groove (223) are arranged circumferentially along the axis of the drill bit (2) and are located on the same side of the guide groove (22) corresponding to the positive rotation direction of the drill bit (2).

4. The soil water and salt monitoring device according to claim 3, characterized in that, The length of the probe hidden limiting groove (223) is greater than the length of the probe monitoring limiting groove (221).

5. The soil water and salt monitoring device according to claim 3, wherein A ring-shaped recess (12) is formed on the outer side of the bottom end of the drill rod (1) in the direction of its center. The ring-shaped recess (12) at the bottom end of the drill rod (1) is located in the assembly groove (21), and its wall surface is in clearance fit with the side wall of the assembly groove. The drill bit (2) and the drill rod (1) are on the same annular surface. The monitoring probe (36) is installed on the bottom surface of the groove of the ring-shaped recess (12).

6. The soil water and salinity monitoring device according to claim 5, characterized in that, The drill rod (1) is hollow inside and has a through bottom, and a mounting plate (38) is fastened to the inner side wall near its bottom opening; the probe telescopic assembly (3) includes a sliding connecting rod (31), a probe connecting rod (34), a connecting block (32), a spring (33), and a connecting rod (35). The sliding connecting rod (31) is coaxially arranged with the drill rod (1), and its first end is slidably connected to the mounting plate (38) along the axial direction of the drill rod (1), and its second end is in contact with the bottom surface of the assembly groove (21); the wall of the annular recess (12) is provided with a sliding hole (13). The first end of the probe connecting rod (34) slides and extends within the sliding hole (13) and extends outside the annular recess (12) to install the monitoring probe (36); the connecting block (32) is fastened to the outer surface of the sliding connecting rod (31); the spring (33) is sleeved on the outer surface of the sliding connecting rod (31), and the two ends of the spring (33) respectively contact and abut against the opposite surfaces of the mounting plate (38) and the connecting block (32); one end of the connecting rod (35) is hinged to the second end of the probe connecting rod (34), and the other end is hinged to the connecting block (32).

7. The soil water and salt monitoring device according to claim 6, wherein There are two probe connecting rods (34), which are symmetrically arranged on both sides of the sliding connecting rod (31).

8. The soil water and salt monitoring device according to claim 6, wherein The top of the drill rod (1) is fastened with a power input head (14) and a monitoring output port (15), and the monitoring output port (15) is electrically connected to the monitoring probe (36).

9. The soil water and salt monitoring device according to claim 6, wherein The mounting plate (38) has a sliding hole (381) along the axis of the drill rod (1). The first end of the sliding connecting rod (31) is slidably connected to the sliding hole (381) and passes through the sliding hole (381) in the cavity inside the drill rod (1).

10. The soil water and salt monitoring device according to claim 9, wherein, It also includes a limiting block (37), which is fastened to the first end of the sliding connecting rod (31) and located in the cavity inside the drill rod (1) to limit the stroke of the sliding connecting rod (31).

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