Portable stratified sampling device based on surface water environmental impact evaluation

Abstract

The invention relates to the technical field of surface water environment sampling, in particular to a portable stratified sampling device based on surface water environment influence evaluation.The portable stratified sampling device comprises a lifting plate, a suspension mechanism and a supporting mechanism are arranged at the top end of the lifting plate, a T-shaped groove is formed in one side of the lifting plate, and a tooth groove is formed in one side of the T-shaped groove; a sampling box is arranged on the lifting plate, a T-shaped plate is arranged between one end of the sampling box and the T-shaped groove, a driving mechanism is arranged between the T-shaped plate and the tooth groove, a storage cavity and a sealing groove are formed in the sampling box, and a first telescopic mechanism is arranged in the sealing groove; according to the structure, the height position of the sampling box is accurately adjusted through the driving mechanism, the accuracy of collecting samples from different water layers is ensured, a plurality of sampling boxes can be configured as required, and each sampling box can be independently adjusted to the required water layer, so that the samples at multiple depths can be simultaneously obtained, and the sampling efficiency is improved. And the comprehensiveness and representativeness of water quality analysis are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of surface water environment sampling, in particular to a portable layered sampling device based on surface water environment impact assessment. BACKGROUND

[0002] It is known that surface water environment impact assessment is an important technical means of ecological environment management, and its core is to accurately obtain the spatial heterogeneity data of water body such as the variation law of dissolved oxygen, pollutant concentration, nutrient salt distribution with water depth. According to the Technical Guidelines for Environmental Impact Assessment of Surface Water Environment, HJ 2.3-2018, the evaluation work needs to accurately obtain the water quality parameters within 0.5m interval vertically, especially in the static water environment of lakes, reservoirs and other places, the water layering effect is significant, such as the existence of thermocline and chemocline. The traditional single-point sampling method will lead to data distortion due to mixing effect. However, when the traditional sampling method uses multiple independent samplers to work layer by layer, the operation time is as long as 3-5 hours per point with 10m water depth. Although the large-scale winch type layered sampling equipment can realize automatic sampling, the whole machine weighs more than 300kg, which is difficult to deploy in complex terrain such as wetlands and mountains, and cannot meet the requirements of rapid response, so it is necessary to put forward a solution to this technical problem. SUMMARY

[0003] (I) Technical problem solved

[0004] In view of the deficiencies in the prior art, the present application provides a portable layered sampling device based on surface water environment impact assessment.

[0005] (II) Technical scheme

[0006] In order to achieve the above purpose, the present application provides the following technical scheme: a portable layered sampling device based on surface water environment impact assessment, comprising a lifting plate, a suspension mechanism and a supporting mechanism are arranged at the top end of the lifting plate, a T-shaped slot is formed in one side of the lifting plate, a gear slot is formed in one side of the T-shaped slot, a sampling box is arranged on the lifting plate, a T-shaped plate is arranged between one end of the sampling box and the T-shaped slot, a driving mechanism is arranged between the T-shaped plate and the gear slot, a storage cavity and a sealing groove are formed in the inside of the sampling box, a first telescopic mechanism is arranged in the sealing groove, a sealing hole is formed between the sealing groove and the storage cavity, a sampling hole is formed in the top end of the sampling box, a drainage hole is formed in the bottom end of the sampling box, a sealing column is arranged on the sampling hole, a sealing plate is arranged between the bottom end of the sealing column and the drainage hole, a connecting plate is arranged between the output end of the first telescopic mechanism and the sealing column through the sealing hole, and a plurality of sampling boxes are arranged.

[0007] Further, the application improves that the driving mechanism comprises a driving slot and a driving motor, the driving slot is arranged on one side of the T-shaped plate, the driving motor is installed on one side of the driving slot, the output end of the driving motor is provided with a gear, and the gear is connected in meshing connection with the tooth groove.

[0008] Further, the application improves that the suspension mechanism comprises a mounting plate and an air bag, the mounting plate is installed at the top end of the lifting plate, the air bag is provided with a splicing mechanism between the mounting plate, the splicing mechanism comprises a T-shaped hole and a T-shaped block, the T-shaped hole is arranged at the bottom end of the mounting plate, the T-shaped block is abutted on the T-shaped hole and connected with the air bag, and the air bag is provided with two and symmetrically arranged.

[0009] Further, the application improves that the support mechanism comprises a support plate and a support frame, a sliding slot is arranged on one side of the bottom end of the support plate, a limiting hole is arranged between the sliding slot and the support plate, a limiting pin is arranged on the limiting hole, a first sliding block is arranged on the sliding slot, a second telescopic mechanism is arranged between the sliding block and the mounting plate, a ground fixing mechanism is arranged on the support frame, a second sliding block is arranged between the support frame and the sliding slot, and a reinforcing mechanism is arranged between the support frame and the support plate.

[0010] Further, the application improves that the reinforcing mechanism comprises a third telescopic mechanism and a third sliding block, the third sliding block is located in the sliding slot, and the third telescopic mechanism is provided with a hinge between the third sliding block and one side of the support frame.

[0011] Further, the application improves that the sliding slot, the first sliding block, the second sliding block and the third sliding block all are in T-shaped structure.

[0012] Further, the application improves that the ground fixing mechanism comprises a base, the base is installed at the bottom end of the support frame, a threaded hole is arranged on the base, a threaded column is arranged on the threaded hole, a spiral nail is arranged at the bottom end of the threaded column, and the threaded hole is provided with two and symmetrically arranged.

[0013] Further, the application improves that the first telescopic mechanism, the second telescopic mechanism and the third telescopic mechanism are all electric telescopic rods.

[0014] (Three) beneficial effects

[0015] Compared with the prior art, the application provides a portable layered sampling device based on surface water environmental impact assessment, which has the following beneficial effects:

[0016] The portable layered sampling device in the surface water environmental impact assessment can realize accurate adjustment of the height position of the sampling box through the driving mechanism, ensure the accuracy of sample collection from different water layers, can configure multiple sampling boxes according to needs, and each sampling box can be independently adjusted to the required water layer, so that samples of multiple depths can be obtained at the same time, improve the comprehensiveness and representativeness of water quality analysis, the modularity makes the whole system easy to assemble and disassemble, convenient for transportation to the sampling site, and quickly put into work or withdraw from the scene, combined with the existing portable controller for automatic control, simplify the operation steps, reduce manual intervention, reduce the operation difficulty and technical requirements, the suspension mechanism composed of the inflatable bag and the ground fixing device in the supporting mechanism can effectively avoid the risk of displacement or overturning of the equipment due to water flow impact, without transferring the river water to other containers for storage, directly using the sampling box as a storage tool, reducing the possibility of sample pollution by the outside world, reducing the direct contact of the operator with the water body, especially when dealing with water bodies that may contain harmful substances.

[0017] Through the modular designed T-shaped groove splicing system, 4-6 independent sampling boxes can be carried at the same time, and each sampling box can realize accurate positioning; the modular assembly supports a 3-person team to complete system assembly within 15 minutes, the supporting mechanism adopts high-strength aviation aluminum material, the weight of the whole set of equipment is controlled within 80kg, meeting the portable demand of field operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Structure diagram of the present application Figure 1 ;

[0019] Figure 2 Structure diagram of the present application Figure 2 ;

[0020] Figure 3 Enlarged structure front view half sectional view of the base in the present application Figure 1 ;

[0021] Figure 4 Enlarged structure top view half sectional view of the lifting plate in the present application Figure 1 ;

[0022] Figure 5 Enlarged structure front view half sectional view of the sampling box in the present application Figure 1 ;

[0023] In the figure: 1, lifting plate; 2, sampling box; 3, tooth groove; 4, first telescopic mechanism; 5, sealing column; 6, sealing plate; 7, connecting plate; 8, driving motor; 9, gear; 10, mounting plate; 11, air bag; 12, T-shaped block; 13, support plate; 14, support frame; 15, first sliding block; 16, second telescopic mechanism; 17, second sliding block; 18, third telescopic mechanism; 19, third sliding block; 20, base; 21, threaded column; 22, screw; 23, T-shaped plate; 24, limit pin. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0025] Please refer to Figures 1-5This invention relates to a portable stratified sampling device for surface water environmental impact assessment, comprising a lifting plate 1, a suspension mechanism and a support mechanism at the top of the lifting plate 1, a T-shaped groove on one side of the lifting plate 1, a toothed groove 3 on one side of the T-shaped groove, a sampling box 2 on the lifting plate 1, a T-shaped plate 23 between one end of the sampling box 2 and the T-shaped groove, a driving mechanism between the T-shaped plate 23 and the toothed groove 3, a storage cavity and a sealing groove inside the sampling box 2, a first telescopic mechanism 4 in the sealing groove, a sealing hole between the sealing groove and the storage cavity, a sampling hole at the top of the sampling box 2, a drainage hole at the bottom of the sampling box 2, and a sealing post 5 on the sampling hole. A sealing plate 6 is provided between the bottom end of the sealing column 5 and the drainage hole. The output end of the first telescopic mechanism 4 passes through the sealing hole and is connected to the sealing column 5 by a connecting plate 7. Multiple sampling boxes 2 are provided. In this embodiment, they can be supported and fixed on the ground by a support mechanism. Then, the lifting plate 1 is placed into the river to be sampled by the support mechanism. According to the number of water levels required for sampling, the corresponding number of sampling boxes 2 are placed on the lifting plate 1. The T-shaped plate 23 is inserted into the T-shaped groove. Then, the height of the sampling boxes 2 on the lifting plate 1 is adjusted by using a drive mechanism. The top of the lifting plate 1 is positioned at the top of the water level by using a suspension mechanism, which facilitates the adjustment of multiple sampling boxes 2 on the lifting plate 1 according to the required water level height. During sampling, the output end of the first telescopic mechanism 4 in the sealing groove of the sampling box 2 is controlled to move linearly downward in the sealing hole. This causes the sealing column 5 to move downward along with the output end of the first telescopic mechanism 4 via the connecting plate 7. The bottom end of the sealing column 5 leaves the sampling hole, and the sealing plate 6 leaves the drain hole. This allows most of the air in the storage chamber to pass through the sampling hole, and river water to quickly enter the storage chamber. Although a small amount of air may remain in the storage chamber, the amount of river water stored in the storage chamber is sufficient for subsequent sampling and testing. Then, the output end of the first telescopic mechanism 4 is controlled to reset, thereby resetting the sealing plate 6 to block the drain hole and the sealing column 5 to block the sampling hole. Then, the lifting plate 1 is moved away from the river water by the transport support mechanism and moved to the bank. The drive mechanism removes the sampling box 2 from the lifting plate 1. The sampling box 2 can directly store river water samples without needing to remove the river water to a sample storage device. When it is necessary to remove the river water from the sampling box 2, the sealing column 5 is moved linearly upward by controlling the output end of the first telescopic mechanism 4. The sealing column 5 moves upward in the sampling hole, thereby causing the sealing plate 6 to leave the drain hole, allowing the river water to drain out through the drain hole. This allows personnel to quickly remove the river water by simply placing the test bottle directly under the drain hole. The sealing effect between the output end of the first telescopic mechanism 4 and the sealing hole is achieved through commonly used components such as sealing rings and sealing sleeves. Moreover, the first telescopic mechanism 4 uses a waterproof linear movement device, making it suitable for sampling in river water.The line controlling the driving mechanism and the first telescopic mechanism 4 is waterproof treated and then connected to a control device such as a portable controller for control.

[0026] In order to adjust the height position of the sampling box 2 on the lifting plate 1 with high precision, in the scheme, the driving mechanism comprises a driving groove and a driving motor 8, the driving groove is arranged on one side of the T-shaped plate 23, the driving motor 8 is installed on one side of the driving groove, the output end of the driving motor 8 is provided with a gear 9, the gear 9 is engaged with the tooth groove 3, the output end of the driving motor 8 in the driving groove rotates the gear 9, the T-shaped plate 23 is limited in the T-shaped groove, and the gear 9 is engaged with the tooth groove 3, so that the sampling box 2 can be stably and linearly moved on the lifting plate 1, the height of the sampling box 2 can be adjusted, and the height of the sampling box 2 is fixed by the self-locking function of the driving motor 8.

[0027] In order to further stably suspend the top end of the lifting plate 1 on the water surface of the river, in the scheme, the suspension mechanism comprises a mounting plate 10 and an air bag 11, the mounting plate 10 is installed on the top end of the lifting plate 1, the air bag 11 is provided with a splicing mechanism between the mounting plate 10, the splicing mechanism comprises a T-shaped hole and a T-shaped block 12, the T-shaped hole is arranged on the bottom end of the mounting plate 10, the T-shaped block 12 is abutted on the T-shaped hole and connected with the air bag 11, the air bag 11 is provided with two and symmetrically arranged, air is filled into the air bag 11, then the air bag 11 is aligned and inserted into the T-shaped hole on the mounting plate 10 through the T-shaped block 12, then the air bag 11 is placed on the water surface to float, an upward supporting force is generated on the lifting plate 1, so that the T-shaped block 12 is more tightly fixed in the T-shaped hole, the two and symmetrically arranged air bags 11 can more stably float the top end of the lifting plate 1 on the river surface, so as to ensure that the lifting plate 1 is in a vertical state, and sampling operation is facilitated.

[0028] In order to prevent the lifting plate 1 from being washed away by the water flow, the support mechanism comprises a support plate 13 and a support frame 14, the bottom end of the support plate 13 is provided with a sliding groove, the sliding groove and the support plate 13 are provided with a limiting hole, the limiting hole is provided with a limiting pin 24, the sliding groove is provided with a first sliding block 15, the sliding block and the mounting plate 10 are provided with a second telescopic mechanism 16, the support frame 14 is provided with a ground fixing mechanism, the support frame 14 and the sliding groove are provided with a second sliding block 17, the support frame 14 and the support plate 13 are provided with a reinforcing mechanism, the first sliding block 15 and the second sliding block 17 are inserted into the sliding groove of the support plate 13 in turn, so that the lifting plate 1 is assembled on the support plate 13 through the second telescopic mechanism 16, the first sliding block 15 is moved to one end of the sliding groove, then the second sliding block 17 is close to the other end of the sliding groove, the support frame 14 is fixed in the soil ground of the river bank through the ground fixing mechanism, so that one end of the support plate 13 is fixed on the ground through the support frame 14, the lifting plate 1 is located above the river water, the lifting plate 1 can be moved downward into the river water through the second telescopic mechanism 16, the top end of the lifting plate 1 is floated on the water surface through the suspension mechanism, so that the force of gravity affecting the support plate 13 can be reduced to cause the support frame 14 to be inclined on the ground, when the water surface is shaken by the water flow and the water wave, the second telescopic mechanism 16 drives the support plate 13 and the support frame 14 to shake, the ground fixing mechanism of the support frame 14 can prevent the support frame 14 from flowing into the river water affected by the water flow, the modular splicing mode can facilitate quick river water sampling and disassembly for carrying, the length of the support plate 13 is longer, the position of the first sliding block 15 and the second sliding block 17 on the support plate 13 can be adjusted flexibly according to the distance between the river water and the river bank, if the second sliding block 17 is close to one side of the sliding groove, in order to prevent the second sliding block 17 from being separated from the sliding groove, the limiting pin 24 is inserted into the limiting hole, the second sliding block 17 is prevented from being separated from the sliding groove, and the lifting plate 1 can be inserted vertically into the river water for sampling operation.

[0029] In order to further stabilize the stability between the support plate 13 and the support frame 14, in the present scheme, the reinforcing mechanism comprises a third telescopic mechanism 18 and a third sliding block 19 located in the sliding groove, and a hinge is arranged between the third telescopic mechanism 18 and the third sliding block 19 and one side of the support frame 14. After inserting the first sliding block 15 into the sliding groove, the third sliding block 19 is inserted into the sliding groove, and finally the second sliding block 17 is inserted into the sliding groove. The third telescopic mechanism 18 between the third sliding block 19 and the second sliding block 17 and the support frame 14 can make the support frame 14 and the support plate 13 more stable. The third sliding block 19 increases the stress point of the support plate 13, which can more stably ensure the support stability of the two when the support plate 13 and the support frame 14 shake. The third telescopic mechanism 18 is extended and retracted to adjust the distance between the third sliding block 19 and the second sliding block 17, which is convenient for adjusting the support effect between the support plate 13 and the support frame 14.

[0030] In order to make the sliding groove, the first sliding block 15, the second sliding block 17 and the third sliding block 19 be any rectangular shape, in the present scheme, the sliding groove, the first sliding block 15, the second sliding block 17 and the third sliding block 19 are all T-shaped structures. The T-shaped structure can prevent the first sliding block 15, the second sliding block 17 and the third sliding block 19 from being separated from the sliding groove.

[0031] In order to facilitate the support frame 14 to be supported and fixed in the soil ground, in the present scheme, the ground fixing mechanism comprises a base 20 installed at the bottom end of the support frame 14. Threaded holes are formed in the base 20, and threaded columns 21 are arranged in the threaded holes. The bottom end of the threaded column 21 is provided with a spiral nail 22. The threaded holes are two and symmetrically arranged. The spiral nail 22 on the base 20 is abutted against the soil ground. By rotating the threaded columns 21 in the two threaded holes, the two threaded columns 21 are allowed to rotate with deviation without being rotated synchronously. Only the threaded nails need to be inserted into the soil, so that the support frame 14 is fixed in the soil through the base 20, thereby facilitating the support of the support plate 13 and the lifting plate 1 for sampling operation.

[0032] In order to improve the control accuracy during use, in the present scheme, the first telescopic mechanism 4, the second telescopic mechanism 16 and the third telescopic mechanism 18 are all electric telescopic rods. The electric telescopic rod has the characteristics of high movement accuracy, so that high-precision control can be realized in the present structure.

[0033] According to GB / T 20654-2006 "Hydraulic and Pneumatic System Equipment Label and Mark System" and actual working condition requirements: the first telescopic mechanism model: Thomson Electrak HD series waterproof electric push rod, technical parameters: stroke 200mm, thrust 500N, speed 10mm / s, IP67 protection level, linear accuracy ±0.05mm, built-in Hall sensor to realize closed-loop control, the second telescopic mechanism and the third telescopic mechanism model: LINAK SLE series large thrust electric push rod, technical parameters: stroke 1.2m, dynamic load 200kg, speed 25mm / s, double ball screw structure, equipped with overload protection device.

[0034] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences of the principles and spirit of the application and that numerous modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A portable stratified sampling device for surface water environmental impact assessment, comprising a lifting plate (1), wherein the top of the lifting plate (1) is provided with a suspension mechanism and a support mechanism, characterized in that, A T-shaped groove is provided on one side of the lifting plate (1), and a toothed groove (3) is provided on one side of the T-shaped groove. A sampling box (2) is provided on the lifting plate (1). A T-shaped plate (23) is provided between one end of the sampling box (2) and the T-shaped groove. A driving mechanism is provided between the T-shaped plate (23) and the toothed groove (3). A storage cavity and a sealing groove are provided inside the sampling box (2). A first telescopic mechanism (4) is provided in the sealing groove. A sealing hole is provided between the sealing groove and the storage cavity. A sampling hole is provided at the top of the sampling box (2). A drainage hole is provided at the bottom of the sampling box (2). A sealing column (5) is provided on the sampling hole. A sealing plate (6) is provided between the bottom end of the sealing column (5) and the drainage hole. The output end of the first telescopic mechanism (4) passes through the sealing hole and is connected to the sealing column (5) by a connecting plate (7). Multiple sampling boxes (2) are provided.

2. The portable stratified sampling device for surface water environmental impact assessment according to claim 1, characterized in that, The driving mechanism includes a driving groove and a driving motor (8). The driving groove is opened on one side of the T-shaped plate (23). The driving motor (8) is installed on one side of the driving groove. The output end of the driving motor (8) is provided with a gear (9). The gear (9) meshes with the tooth groove (3).

3. The portable stratified sampling device for surface water environmental impact assessment according to claim 1, characterized in that, The suspension mechanism includes a mounting plate (10) and an inflatable bladder (11). The mounting plate (10) is installed on the top of the lifting plate (1). A splicing mechanism is provided between the inflatable bladder (11) and the mounting plate (10). The splicing mechanism includes a T-shaped hole and a T-shaped block (12). The T-shaped hole is opened at the bottom of the mounting plate (10). The T-shaped block (12) abuts against the T-shaped hole and connects to the inflatable bladder (11). There are two inflatable bladders (11) arranged symmetrically.

4. The portable stratified sampling device for surface water environmental impact assessment according to claim 1, characterized in that, The support mechanism includes a support plate (13) and a support frame (14). A sliding groove is provided on one side of the bottom end of the support plate (13). A limiting hole is provided between the sliding groove and the support plate (13). A limiting pin (24) is provided on the limiting hole. A first slider (15) is provided on the sliding groove. A second telescopic mechanism (16) is provided between the slider and the mounting plate (10). A ground fixing mechanism is provided on the support frame (14). A second slider (17) is provided between the support frame (14) and the sliding groove. A reinforcement mechanism is provided between the support frame (14) and the support plate (13).

5. The portable stratified sampling device for surface water environmental impact assessment according to claim 4, characterized in that, The reinforcement mechanism includes a third telescopic mechanism (18) and a third slider (19). The third slider (19) is located in the groove. A hinge is provided between the third telescopic mechanism (18), the third slider (19), and one side of the support frame (14).

6. The portable stratified sampling device for surface water environmental impact assessment according to claim 5, characterized in that, The groove, the first slider (15), the second slider (17), and the third slider (19) are all T-shaped structures.

7. The portable stratified sampling device for surface water environmental impact assessment according to claim 4, characterized in that, The ground fixing mechanism includes a base (20), which is installed at the bottom end of the support frame (14). The base (20) has a threaded hole, and a threaded post (21) is provided on the threaded hole. A spiral nail (22) is provided at the bottom end of the threaded post (21). There are two threaded holes arranged symmetrically.

8. The portable stratified sampling device for surface water environmental impact assessment according to claim 5, characterized in that, The first telescopic mechanism (4), the second telescopic mechanism (16) and the third telescopic mechanism (18) are all electric telescopic rods.

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