Handheld soil sampling device for environmental monitoring

Abstract

The utility model provides a handheld environmental monitoring soil sampling device, which relates to the technical field of soil sampling, and comprises a sampling barrel, a convenient locking mechanism is arranged above the sampling barrel, the convenient locking mechanism comprises a holding ring, the inner wall of the lower end of the holding ring is rotatably connected with the outer part of the upper end of the sampling barrel through a bearing, and the inner wall of the lower end of the holding ring is connected with the sampling barrel. An annular driving plate is fixedly connected to the inner wall of the upper end of the holding ring in a sleeving mode, inclined grooves distributed in an annular array mode are formed in the upper end of the annular driving plate, limiting sliding grooves distributed in an annular array mode are formed in the upper end of the sampling barrel, and rapid locking and unlocking of the adjusting rod can be achieved by rotating the holding ring through a convenient locking mechanism; the soil sampling device has the advantages that a traditional complicated operation mode is avoided, the use convenience is greatly improved, sample scattering caused by air entering during sampling is avoided, an adjusting rod can drive an extrusion block to extrude out a soil sample in the sampling barrel, sample collection is facilitated, the adjusting rod can be contracted to reduce the overall size of the device, and the device is convenient to carry and transport.

Description

A handheld soil sampling device for environmental monitoring Technical Field

[0001] This utility model relates to the field of soil sampling technology, and in particular to a handheld soil sampling device for environmental monitoring. Background Technology

[0002] Soil pollution is one type of environmental pollution, which has a serious impact on crop production and people's lives. In order to test the soil, soil sampling devices are needed to collect soil samples. Existing soil sampling devices are usually soil sampling drills, which are large and expensive, and are not convenient to carry and transport.

[0003] For example, a handheld environmental monitoring soil sampling device (publication number: CN222599203U) disclosed in Chinese patent literature uses a handheld handle to move the extrusion plate downwards and uses a piston to remove the soil from inside the sampling tube, bagging the soil in the area, which is convenient for removing soil with high moisture and high viscosity from inside the sampling tube.

[0004] However, while the adjustment port on the outside of the sampling tube allows for adjustment of the fixed column, the disturbance caused by airflow during the insertion and lifting of the sampling tube disrupts the stability of the collected soil inside. The soil, which was originally tightly packed inside the sampling tube, is disturbed by the intrusion of air, and the balance of friction and cohesion between soil particles is broken. Some soil will fall out through the gap between the adjustment port and the sampling tube wall, greatly reducing sampling efficiency. Furthermore, each adjustment of the fixed column requires repeated turning of the nut to loosen and tighten, which is cumbersome and inconvenient to use. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the tendency of soil samples to fall during sampling and the cumbersome adjustment process, which results in poor convenience.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A handheld soil sampling device for environmental monitoring includes a sampling tube, and a convenient locking mechanism is provided on the top of the sampling tube. The convenient locking mechanism includes a grip ring, and the lower inner wall of the grip ring is rotatably connected to the upper outer side of the sampling tube through a bearing.

[0008] An annular drive plate is fixedly sleeved on the upper inner wall of the gripping ring. The upper end of the annular drive plate is provided with inclined grooves arranged in an annular array. The upper end of the sampling cylinder is provided with limiting slide grooves arranged in an annular array. A limiting slider is slidably connected to the inner wall of the limiting slide groove. A return spring is fixedly connected to one side of the inner wall of the limiting slide groove. One end of the return spring is fixedly connected to one side of the limiting slider.

[0009] Preferably, a sliding rod is fixedly connected to the upper end of the limiting slider, and the outer side of the sliding rod is slidably connected to the inner wall of the inclined groove.

[0010] Preferably, the upper end of the slide rod extends above the annular drive plate, a limit rod is fixedly connected to the outside of the slide rod, and a squeezing block is movably sleeved on the inner wall of the sampling cylinder.

[0011] Preferably, the upper end of the extrusion block is provided with a threaded groove, the inner wall of the threaded groove is threaded with a screw, and the upper end of the screw is fixedly connected with an adjusting rod.

[0012] Preferably, the lower end of the adjusting rod contacts the upper end of the extrusion block, the upper end of the adjusting rod passes through the sampling cylinder and slides in a sleeve with the inner wall of the annular drive plate, and a limiting groove is formed on the outside of the adjusting rod.

[0013] Preferably, the limiting grooves are divided into multiple groups and distributed in a linear array outside the adjusting rod, and the four limiting grooves in each group are distributed in a ring array outside the adjusting rod, wherein the inner wall of one group of limiting grooves is movably inserted into one end of the limiting rod.

[0014] Preferably, the upper end of the adjusting rod is fixedly connected to a symmetrically distributed gripping rod, and the lower end of the sampling tube has a beveled cut on its inner wall.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] In this invention, a convenient locking mechanism allows for quick locking and unlocking of the adjusting rod by simply rotating the grip ring, avoiding the traditional complex operation method and greatly improving ease of use. Furthermore, it prevents air from entering and causing sample spillage during sampling. The adjusting rod not only drives the squeezing block to expel soil samples from the sampling cylinder for easy sample collection, but it can also retract to reduce the overall size of the device, making it easier to carry and transport. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the main structure of a handheld environmental monitoring soil sampling device provided by this utility model;

[0018] Figure 2 is a three-dimensional view of the sampling tube structure of a handheld environmental monitoring soil sampling device provided by this utility model;

[0019] Figure 3 is a perspective view of the grip ring structure of a handheld environmental monitoring soil sampling device provided by this utility model;

[0020] Figure 4 is an exploded view of the extrusion block structure of a handheld environmental monitoring soil sampling device provided by this utility model;

[0021] Figure 5 is a perspective view of the slide bar structure of a handheld environmental monitoring soil sampling device provided by this utility model.

[0022] Legend: 1. Sampling cylinder; 2. Holding ring; 21. Annular drive plate; 22. Inclined groove; 23. Limiting slide groove; 24. Limiting slider; 25. Return spring; 26. Slide rod; 27. Limiting rod; 28. Extrusion block; 29. ​​Threaded groove; 210. Screw; 211. Adjusting rod; 212. Limiting groove; 213. Holding rod; 3. Inclined cut. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Example

[0028] As shown in Figures 1-5, this utility model provides a technical solution: a handheld environmental monitoring soil sampling device, including a sampling tube 1. The sampling tube 1 is carefully crafted from a high-strength, corrosion-resistant, and flexible engineering plastic material. This material can resist acid and alkali corrosion and sand and gravel abrasion in complex and ever-changing outdoor soil environments, ensuring structural integrity. It can also buffer the impact force during the sampling process to a certain extent, protecting the internal components. A convenient locking mechanism is cleverly arranged on the top of the sampling tube 1, opening up a new mode of operation for the adjustment rod 211 and the convenience of using the entire device. The convenient locking mechanism includes a grip ring 2. The grip ring 2 is the direct contact part for the operator's hand to apply force and operate. Its lower inner wall is smoothly rotated to the upper outer part of the sampling tube 1 through a high-precision bearing. The bearing is a ball bearing with high load-bearing capacity and low friction coefficient, ensuring that the grip ring 2 rotates flexibly and is durable.

[0029] An annular drive plate 21 is fixedly sleeved onto the upper inner wall of the gripping ring 2 via an interference fit. The annular drive plate 21 provides crucial support for subsequent mechanical motion conversion. The upper end of the annular drive plate 21 is precision-milled with annularly arrayed inclined grooves 22. The groove walls of the inclined grooves 22 are smooth, and the angles are precisely designed, forming a key geometric structure for achieving precise movement of the slide rod 26. The upper end of the sampling cylinder 1 is laser-cut with annularly arrayed limiting grooves 23. The inner walls of the limiting grooves 23 are straight and smooth, providing precise guidance for the sliding of the limiting slider 24. To ensure its movement trajectory is strictly limited, the inner wall of the limiting slide groove 23 is tightly slidably connected to the limiting slider 24, allowing the limiting slider 24 to move quickly and smoothly within it. A return spring 25 is fixedly connected to one side of the inner wall of the limiting slide groove 23 by welding. The return spring 25 is made of high-quality spring steel with an elastic coefficient that has undergone rigorous testing and has undergone a fine heat treatment process to ensure stable and durable elasticity. One end of the return spring 25 is fixedly connected to one side of the limiting slider 24 by welding, forming a stable elastic return system that provides power support for the return of the limiting slider 24 and related components.

[0030] The upper end of the limit slider 24 is fixedly connected to the slide rod 26 by welding. As a force transmission and execution component, the slide rod 26 plays a key role in the entire locking and unlocking process. The outer side of the slide rod 26 is tightly slidably connected to the inner wall of the inclined groove 22 to ensure that the slide rod 26 moves smoothly in the inclined groove 22 and accurately responds to the rotation of the annular drive plate 21.

[0031] The upper end of the slide bar 26 extends precisely above the annular drive plate 21, and a limiting rod 27 is fixedly connected to its exterior by welding. The limiting rod 27 is made of high-strength, wear-resistant metal, and its size is precisely matched with the limiting groove 212 on the adjusting rod 211, which can realize reliable locking and unlocking functions. The inner wall of the sampling cylinder 1 is matched with the gap of the squeezing block 28, and the squeezing block 28 can move flexibly up and down on the inner wall of the sampling cylinder 1 for squeezing the soil sample.

[0032] The upper end of the extrusion block 28 is milled to form a threaded groove 29. The thread parameters of the threaded groove 29 are precisely matched with the screw 210, providing a reliable foundation for the screw 210 to be screwed in and out. The inner wall of the threaded groove 29 is precisely threaded with the screw 210. The screw 210 is made of high-strength stainless steel, which is straight and has good rigidity. An adjusting rod 211 is fixedly connected to its upper end by welding. The adjusting rod 211 is the core component for the operator to control the extrusion block 28 and realize the adjustment function of the device. It passes through the sampling cylinder 1 and is adapted to the gap of the inner wall of the annular drive plate 21, and can slide flexibly in it.

[0033] The lower end of the adjusting rod 211 is in close contact with the upper end of the extrusion block 28 to ensure precise and efficient force transmission. The upper end of the adjusting rod 211 precisely penetrates the sampling cylinder 1 and is adapted to the gap between the inner wall of the annular drive plate 21, allowing it to slide flexibly within it. The outer side of the adjusting rod 211 is milled to create a limiting groove 212. The shape and size of the limiting groove 212 are adapted to the limiting rod 27 to ensure precise insertion. The limiting grooves 212 are divided into multiple groups and are distributed in a linear array on the outer side of the adjusting rod 211. Each group of four limiting grooves 212 are distributed in a ring array on the outer side of the adjusting rod 211. The inner wall of one group of limiting grooves 212 is adapted to the gap between one end of the limiting rod 27, enabling smooth movable insertion.

[0034] The upper end of the adjusting rod 211 is fixedly connected by welding to a symmetrically distributed gripping rod 213. The gripping rod 213 adopts an ergonomic arc design and has an anti-slip texture on the surface, making it convenient for operators to grip and apply force. The lower end of the sampling tube 1 has a beveled cut 3 milled on its inner wall. The angle of the beveled cut 3 is carefully designed to reduce soil resistance when inserted into the soil, allowing the sampling tube 1 to be inserted into the soil more smoothly and improving sampling efficiency.

[0035] The working process of this utility model:

[0036] Step 1: When it is necessary to operate the adjusting rod 211, such as adjusting the position of the squeezing block 28 or the storage device to reduce the space occupied, the operator holds the sampling cylinder 1 and the holding ring 2 with both hands respectively, and rotates the holding ring 2. Since the lower inner wall of the holding ring 2 is flexibly connected to the upper outer side of the sampling cylinder 1 through the bearing, the rotation of the holding ring 2 drives the annular drive plate 21, which is fixedly sleeved on the upper inner wall, to rotate synchronously. The inclined groove 22 at the upper end of the annular drive plate 21 is tightly slidably connected to the outside of the slide rod 26. As the annular drive plate 21 rotates, the inclined surface of the inclined groove 22 utilizes the mechanical principle... The circular motion of the annular drive plate 21 is converted into the radial movement of the slide bar 26. The slide bar 26 drives the limiting slider 24 to slide in the limiting groove 23 against the elastic force of the return spring 25, thereby causing the limiting rod 27 to disengage from the limiting groove 212 where the adjusting rod 211 is currently inserted, thus unlocking the adjusting rod 211. At this time, the adjusting rod 211 can move freely. When the adjusting rod 211 moves to the appropriate position, the grip ring 2 is released, and the elastic force of the return spring 25 drives the limiting rod 27 to be inserted into the corresponding limiting groove 212 for fixation, thus facilitating storage, carrying and use.

[0037] Step two: When sampling soil, align the lower end of the sampling tube 1 with the soil to be sampled. The inclined cut 3 on the inner wall of the lower end of the sampling tube 1 allows for smoother insertion into the soil. After collecting the soil sample, if it is necessary to squeeze the soil out of the sampling tube 1, the operator first rotates the holding ring 2 to stabilize the sampling tube 1, then pushes the adjusting rod 211 downwards. The movement of the adjusting rod 211 causes the connected squeezing block 28 to move up and down on the inner wall of the sampling tube 1. The squeezing block 28 applies force to the soil sample, squeezing the soil out of the sampling tube 1 for easy sample collection. When it is necessary to clean the squeezing block 28, rotate the adjusting rod 211. Since the threaded groove 29 at the upper end of the squeezing block 28 is threadedly connected to the screw 210, the screw 210 rotates with the adjusting rod 211. Utilizing the threaded transmission principle, the squeezing block 28 gradually disengages from the adjusting rod 211, allowing for disassembly of the squeezing block 28. This facilitates deep cleaning, ensuring the accuracy of subsequent sampling and preventing cross-contamination.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A handheld soil sampling device for environmental monitoring, comprising a sampling tube (1), characterized in that: A convenient locking mechanism is provided above the sampling cylinder (1), and the convenient locking mechanism includes a grip ring (2). The lower inner wall of the grip ring (2) is rotatably connected to the upper outer wall of the sampling cylinder (1) through a bearing. An annular drive plate (21) is fixedly sleeved on the upper inner wall of the grip ring (2). An inclined groove (22) with an annular array is opened at the upper end of the annular drive plate (21). A limiting slide groove (23) with an annular array is opened at the upper end of the sampling cylinder (1). A limiting slider (24) is slidably connected to the inner wall of the limiting slide groove (23). A return spring (25) is fixedly connected to one side of the inner wall of the limiting slide groove (23). One end of the return spring (25) is fixedly connected to one side of the limiting slider (24).

2. The handheld soil sampling device for environmental monitoring according to claim 1, characterized in that: The upper end of the limiting slider (24) is fixedly connected to a slide rod (26), and the outside of the slide rod (26) is slidably connected to the inner wall of the inclined groove (22).

3. The handheld soil sampling device for environmental monitoring according to claim 2, characterized in that: The upper end of the slide rod (26) extends above the annular drive plate (21), and a limit rod (27) is fixedly connected to the outside of the slide rod (26). A squeezing block (28) is movably sleeved on the inner wall of the sampling cylinder (1).

4. A handheld soil sampling device for environmental monitoring according to claim 3, characterized in that: The upper end of the extrusion block (28) is provided with a threaded groove (29), and a screw (210) is threadedly connected to the inner wall of the threaded groove (29). An adjusting rod (211) is fixedly connected to the upper end of the screw (210).

5. A handheld soil sampling device for environmental monitoring according to claim 4, characterized in that: The lower end of the adjusting rod (211) contacts the upper end of the extrusion block (28), the upper end of the adjusting rod (211) passes through the sampling cylinder (1) and slides in connection with the inner wall of the annular drive plate (21), and a limiting groove (212) is provided on the outside of the adjusting rod (211).

6. A handheld soil sampling device for environmental monitoring according to claim 5, characterized in that: The limiting grooves (212) are divided into multiple groups and distributed in a linear array outside the adjusting rod (211). Each group of four limiting grooves (212) are distributed in a ring array outside the adjusting rod (211). The inner wall of one group of limiting grooves (212) is movably inserted into one end of the limiting rod (27).

7. A handheld soil sampling device for environmental monitoring according to claim 4, characterized in that: The upper end of the adjusting rod (211) is fixedly connected with symmetrically distributed gripping rods (213), and the lower end of the sampling tube (1) has a beveled cut (3) on its inner wall.

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