Soil moisture content monitoring device

Abstract

The utility model relates to the technical field of soil moisture content measurement, in particular to a soil moisture content monitoring device. The device comprises a sleeve, a detection sleeve rod which is detachably installed in the sleeve, and a locking structure and a limiting structure which are installed on the outer wall of the detection sleeve rod. The limiting structure comprises an elastic sleeve ring mounted at the bottom of the sleeve and a waterproof sleeve detachably connected with the detection sleeve rod; a rubber ring is fixed to the top of the elastic lantern ring, a plurality of clamping grooves are formed in the bottom of the inner wall of the elastic lantern ring, and a plurality of elastic clamping blocks are fixed to the bottom of the waterproof sleeve and connected with the clamping grooves in a clamped mode. According to the device, long-term waterproofing of the device is achieved, meanwhile, partial or overall convenient mounting and dismounting of the device can be achieved, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of soil moisture content measurement, in particular to a soil moisture content monitoring device. Background Art

[0002] Capacitive FDR (Frequency Domain Reflection) soil moisture sensors are generally installed by inserting a tube. To prevent water and water vapor in the soil from penetrating into the tube and ensure the normal operation of the sensor, a conical waterproof cap is usually installed at the bottom of the sensor tube to completely isolate the sensor and its accessories from the soil. The sensor measures soil moisture content by penetrating the electromagnetic field frequency of the tube wall.

[0003] After several years of operation, the waterproof glue between the conical waterproof cap at the lowest end of the casing and the casing has aged, and the two cannot be in close contact, with tiny pores appearing. In severe cases, the entire conical waterproof cap may even fall off from the bottom of the casing, causing the waterproof performance of the entire sealed casing of the sensor to deteriorate, allowing water and water vapor in the soil to penetrate into the casing, and the infiltrated water vapor can corrode the sensor copper column electrode and the sensor interface controller circuit board. Especially in the summer in the south, high temperatures can make the movement of water and water vapor in the soil more active. In addition, the entire casing of the sensor is in a sealed state, and the temperature inside it can reach up to 70°C. In such a high temperature and high humidity environment, the sensor and its auxiliary circuits are very likely to fail.

[0004] In order to solve the problem of the waterproof cap falling off, the usual practice is to re-drill holes near the original sensor installation point and install a new sleeve. This solution is time-consuming, labor-intensive and labor-intensive. The existing device has improved it by arranging multiple elastic retaining rings and tightening rings on the outside of the detection sleeve rod, which can achieve waterproofing of the sleeve and facilitate the removal of the sleeve or the detection sleeve rod, thereby realizing partial or complete replacement of the device. However, in the actual operation process, in order to ensure that the detection sleeve rod and the sleeve will remain waterproof, the tightening ring is tightened when necessary. In this process, there may be a gap between the tightening ring and the detection sleeve rod due to insufficient strength, so that water and water vapor in the soil can penetrate into the sleeve, and there is a possibility of rusting the sensor copper column electrode and the sensor interface controller circuit board. Summary of the invention

[0005] In order to solve the above problems, the purpose of the utility model is to provide a soil moisture monitoring device, which can realize the convenient installation and disassembly of part or the whole of the device while realizing long-term waterproofing of the device, thereby extending the service life of the device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A soil moisture monitoring device comprises a sleeve, a detection sleeve rod detachably installed in the sleeve, and a locking structure and a limiting structure installed on the outer wall of the detection sleeve rod; the limiting structure comprises an elastic sleeve ring installed at the bottom of the sleeve and a waterproof sleeve detachably connected to the detection sleeve rod; a rubber ring is fixed on the top of the elastic sleeve ring, and a plurality of slots are opened at the bottom of the inner wall; a plurality of elastic card blocks are fixed on the bottom of the waterproof sleeve, and the elastic card blocks are engaged with the slots.

[0008] More preferably, the elastic ring includes a limiting ring fixed to the bottom of the sleeve, a ring groove opened at the top of the limiting ring, a spring fixed in the ring groove, a telescopic ring fixedly connected to the spring and slidably connected to the ring groove, and a lifting ring fixed to the top of the telescopic ring and slidably connected to the inner wall of the sleeve; the limiting ring and the inner wall of the lifting ring are both in close contact with the outer wall of the waterproof sleeve.

[0009] More preferably, the waterproof cover comprises a fixing ring fixed to the outside of the detection cover rod and a sealing cover threadedly connected to the fixing ring.

[0010] More preferably, the locking structure includes a rotating ring rotatably connected to the detection sleeve rod and support rods symmetrically arranged on both sides of the rotating ring; the inner wall of the sleeve is symmetrically provided with sliding grooves adapted to the support rods, and a connecting groove adapted to the support rods is provided between the two sliding grooves.

[0011] More preferably, a sealing ring is fixed at the bottom of the sleeve, and the top of the sealing ring is fixedly connected to a limiting ring.

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model can realize the waterproof effect of the casing by cooperating with the elastic sleeve ring, the waterproof sleeve, the detection sleeve rod, the rubber ring and the elastic clamping block when the waterproof sleeve is clamped with the elastic sleeve ring. At the same time, the waterproof sleeve and the casing can be easily disassembled;

[0014] 2. In the present invention, when the waterproof cover is used for a certain number of years, the waterproof performance is greatly reduced. The waterproof cover can be removed from the casing and replaced, thereby extending the service life of the device and reducing the monitoring cost;

[0015] 3. The utility model can install or dismantle the device in whole or in part as needed through the cooperation of the locking structure, the sleeve and the detection sleeve rod, thereby improving the monitoring efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front cross-sectional view of the monitoring device;

[0017] Figure 2 This is an enlarged view of the structure at A;

[0018] Figure 3It is a top sectional view of the monitoring device.

[0019] Description of reference numerals:

[0020] 1. Sleeve; 11. Slide groove; 12. Connecting groove; 2. Detection sleeve rod; 3. Locking structure; 31. Rotating ring; 32. Support rod; 4. Limiting structure; 41. Elastic sleeve ring; 411. Limiting ring; 412. Ring groove; 413. Spring; 414. Telescopic ring; 415. Lifting ring; 416. Slot; 42. Waterproof sleeve; 421. Fixed ring; 422. Sealing cover; 423. Elastic block; 43. Rubber ring; 5. Sealing ring. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] A soil moisture monitoring device comprises a sleeve 1, a detection sleeve rod 2 detachably installed in the sleeve 1, and a locking structure 3 and a limiting structure 4 installed on the outer wall of the detection sleeve rod 2; the limiting structure 4 comprises an elastic sleeve ring 41 installed at the bottom of the sleeve 1 and a waterproof sleeve 42 detachably connected to the detection sleeve rod 2; a rubber ring 43 is fixed on the top of the elastic sleeve ring 41, and a plurality of slots 416 are opened at the bottom of the inner wall; a plurality of elastic blocks 423 are fixed on the bottom of the waterproof sleeve 42, and the elastic blocks 423 are engaged with the slots 416.

[0023] By cooperating among the elastic sleeve 41, the waterproof sleeve 42, the detection sleeve rod 2, the rubber ring 43 and the elastic clamping block 423, when the waterproof sleeve 42 is clamped with the elastic sleeve 41, the waterproof sleeve 42 cooperates with the rubber ring 43 to achieve the effect of waterproofing the inside of the casing 1, and at the same time, the waterproof sleeve 42 and the casing 1 can be conveniently disassembled; when the waterproof sleeve 42 has been used for a certain number of years, the waterproof performance is greatly reduced, and the waterproof sleeve 42 can be removed from the casing 1 and replaced, thereby extending the service life of the device and reducing the monitoring cost; by cooperating among the locking structure 3, the casing 1 and the detection sleeve rod 2, the device can be installed or disassembled as a whole or in part as needed, thereby improving the monitoring efficiency.

[0024] As a possible implementation of the present scheme, preferably, the elastic ring 41 includes a limiting ring 411 fixed to the bottom of the sleeve 1, a ring groove 412 opened at the top of the limiting ring 411, a spring 413 fixed in the ring groove 412, a telescopic ring 414 fixedly connected to the spring 413 and slidably connected to the ring groove 412, and a lifting ring 415 fixed to the top of the telescopic ring 414 and slidably connected to the inner wall of the sleeve 1; the inner walls of the limiting ring 411 and the lifting ring 415 are both in close contact with the outer wall of the waterproof sleeve 42; through the cooperation of the limiting ring 411, the ring groove 412, the spring 413, the telescopic ring 414 and the lifting ring 415, it is possible to achieve that the rubber ring 43 on the top of the lifting ring 415 is in close contact with the waterproof sleeve 42 while fixing the waterproof sleeve 42, thereby improving the waterproofness of the inside of the sleeve 1.

[0025] As a possible implementation of the present solution, preferably, the waterproof cover 42 includes a fixing ring 421 fixed to the outside of the detection cover rod 2 and a sealing cover 422 screwed to the fixing ring 421; by screwing the fixing ring 421 and the sealing cover 422, the sealing cover 422 can be quickly disassembled, thereby improving replacement efficiency.

[0026] As a possible implementation manner of the present scheme, preferably, the locking structure 3 includes a rotating ring 31 rotatably connected to the detection sleeve rod 2 and support rods 32 symmetrically arranged on both sides of the rotating ring 31; the inner wall of the sleeve 1 is symmetrically provided with sliding grooves 11 adapted to the support rods 32, and a connecting groove 12 adapted to the support rods 32 is provided between the two sliding grooves 11; through the cooperation of the rotating ring 31, the support rod 32, the sliding groove 11 and the connecting groove 12, the relative fixation or separation between the sleeve 1 and the detection sleeve rod 2 can be achieved, thereby achieving the separate removal of the detection sleeve rod 2 or the dismantling of the entire device.

[0027] As a possible implementation manner of the present scheme, preferably, a sealing ring 5 is fixed to the bottom of the sleeve 1, and the top of the sealing ring 5 is fixedly connected to the limiting ring 411; by setting the sealing ring 5, the sealing between the elastic ring 41 and the sleeve 1 can be enhanced, thereby improving the waterproofness inside the sleeve 1.

[0028] The working principle of this device is:

[0029] When the entire device needs to be removed, the rotating ring 31 is rotated to rotate the support rod 32 to the position of the connecting groove 12, so that when the detection sleeve rod 2 is moved upward by the handle on the top of the detection sleeve rod 2, the support rod 32 is restricted by the connecting groove 12 in the vertical direction, so that the sleeve 1 rises with the support rod 32 and the rotating ring 31, so that the entire device is removed; when only the detection sleeve rod 2 needs to be removed, the rotating ring 31 is rotated until the support rod 32 is located at the bottom of the slide groove 11, and then the handle on the top of the detection sleeve rod 2 is lifted to take out the detection sleeve rod 2; when the sealing cover 422 needs to be replaced, the detection sleeve rod 2 is pulled upward to disengage the elastic block 423 from the card groove 416, and the upward pull is continued until the detection sleeve rod 2 completely leaves the inside of the sleeve 1, and then the sealing cover 422 is replaced. The sealing cover 422 can be separated from the fixing ring 421; when installing the sealing cover 422, first tighten the sealing cover 422 and the fixing ring 421, then connect the detection sleeve rod 2 to the waterproof sleeve 42 and move it downward into the sleeve 1, and when the waterproof sleeve 42 abuts against the lifting ring 415, it continues to move downward until the elastic block 423 is engaged with the slot 416, and the installation is completed at this time; in this device, when no pressure is applied to the detection sleeve rod 2 and the limiting structure 4, the elastic block 423 is above the slot 416, and only when the detection sleeve rod 2 is pressed downward, the elastic blocks 423 on both sides of the waterproof sleeve 42 will be engaged with the slot 416; at the same time, in order to facilitate the rotation of the locking structure 3, an extension rod or other components extending to the top of the sleeve 1 (not shown in the figure) can be fixed on the top of the rotating ring 31.

[0030] The above description is only a specific implementation method of the utility model, and does not limit the patent scope of the utility model. Any equivalent structural transformation made using the contents of the utility model specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the utility model.

Claims

1. A soil moisture monitoring device, characterized in that: It comprises a sleeve (1), a detection sleeve rod (2) detachably mounted in the sleeve (1), and a locking structure (3) and a limiting structure (4) mounted on the outer wall of the detection sleeve rod (2); The limiting structure (4) comprises an elastic sleeve (41) mounted on the bottom of the sleeve (1) and a waterproof sleeve (42) detachably connected to the detection sleeve rod (2); a rubber ring (43) is fixed on the top of the elastic sleeve (41), and a plurality of slots (416) are provided on the bottom of the inner wall; a plurality of elastic blocks (423) are fixed on the bottom of the waterproof sleeve (42), and the elastic blocks (423) are engaged with the slots (416).

2. A soil moisture monitoring device according to claim 1, characterized in that: The elastic sleeve ring (41) comprises a limiting ring (411) fixed to the bottom of the sleeve (1), an annular groove (412) provided at the top of the limiting ring (411), a spring (413) fixed in the annular groove (412), a telescopic ring (414) fixedly connected to the spring (413) and slidably connected to the annular groove (412), and a lifting ring (415) fixed to the top of the telescopic ring (414) and slidably connected to the inner wall of the sleeve (1); the inner walls of the limiting ring (411) and the lifting ring (415) are both in close contact with the outer wall of the waterproof sleeve (42).

3. A soil moisture monitoring device according to claim 1, characterized in that: The waterproof sleeve (42) comprises a fixing ring (421) fixed to the outside of the detection sleeve rod (2) and a sealing cover (422) threadedly connected to the fixing ring (421).

4. A soil moisture monitoring device according to claim 1, characterized in that: The locking structure (3) comprises a rotating ring (31) rotatably connected to the detection sleeve rod (2) and support rods (32) symmetrically arranged on both sides of the rotating ring (31); the inner wall of the sleeve (1) is symmetrically provided with sliding grooves (11) adapted to the support rods (32), and a connecting groove (12) adapted to the support rods (32) is provided between the two sliding grooves (11).

5. A soil moisture monitoring device according to claim 2, characterized in that: A sealing ring (5) is fixed to the bottom of the sleeve (1), and the top of the sealing ring (5) is fixedly connected to a limiting ring (411).

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