Sampling device for environmental monitoring instrument
By using a buoyancy collar design and threaded connection, the sampling device overcomes the shortcomings of traditional sampling devices in depth control and sample transfer, achieving accurate sampling and convenient maintenance, and improving the efficiency and accuracy of environmental monitoring.
Patent Information
- Application Number
- CN202423132567.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-18
AI Technical Summary
Traditional sampling devices have shortcomings in sampling depth control and sample transfer, and cannot be flexibly adjusted, resulting in high equipment procurement costs, complex operation and inconvenient maintenance, which affects monitoring efficiency and the accuracy of results.
The device employs a buoyancy collar design, which controls the sampling depth by changing its volume, and achieves precise sample transfer and convenient device maintenance through threaded connections and rotary control valves.
It achieves precise control of sampling depth and efficient and convenient sample transfer, improves the adaptability and flexibility of the device, reduces maintenance difficulty and cost, and ensures the accuracy and continuity of monitoring results.
Smart Images
Figure CN223650233U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sampling device technology, specifically to a sampling device for environmental monitoring instruments. Background Technology
[0002] In the field of environmental monitoring, accurate water sampling from different bodies of water is crucial for obtaining reliable environmental data. Traditional sampling devices often have significant shortcomings in terms of sampling depth control. Many existing sampling devices employ fixed structural designs, making it impossible to flexibly adjust the sampling depth according to actual needs. For example, some simple gravity samplers can only sink to a certain depth by their own weight to collect samples. For complex bodies of water that require sampling at different depths, such as lakes or oceans with distinct thermoclines or chemical concentration stratification, this single sampling depth mode is insufficient to meet the requirements of accurate monitoring. This leads to the need to equip various sampling devices of different specifications or types when facing diverse environmental monitoring tasks, which not only increases equipment procurement costs but also makes frequent equipment changes extremely inconvenient in actual operation, reducing work efficiency.
[0003] Meanwhile, traditional sampling devices also face numerous challenges in sample transfer and device maintenance after water sample collection. Some sampling devices employ complex and difficult-to-control sample extraction methods, potentially requiring specialized suction tools or complex pouring operations. This not only easily leads to sample loss or contamination but also makes it difficult to accurately control the amount of sample transferred. For analytical experiments requiring precise sample volume, such as trace pollutant detection, this imprecise sample transfer method directly affects the accuracy of the experimental results. Furthermore, traditional sampling devices often do not adequately consider ease of maintenance in their structural design. Many components are welded or integrally molded, making it difficult for maintenance personnel to disassemble and repair them if internal blockages or component damage occur. Often, the entire device must be discarded, which undoubtedly increases the operating costs and wastes resources in environmental monitoring and hinders the sustainable implementation of long-term, large-scale environmental monitoring projects. Utility Model Content
[0004] The purpose of this invention is to provide a sampling device for environmental monitoring instruments to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0006] A sampling device for an environmental monitoring instrument includes a sampling component, the sampling component including a barrier filter cylinder, and the bottom end of the barrier filter cylinder is threadedly connected to a counterweight block for counterweighting via a threaded bottom tube.
[0007] A sampling tube is fixedly connected to the bottom of the inner wall of the barrier filter cartridge. A buoyancy collar is movably sleeved on the outer wall of the sampling tube. A collar mounting bracket is detachably fixedly connected to the outer wall of the buoyancy collar. A connecting rod is detachably fixedly connected to the inner wall of the top of the collar mounting bracket. An internal sealing plate is fixedly connected to the bottom end of the connecting rod. A water inlet hole is opened on the outer wall of the sampling tube.
[0008] A reset spring is fixedly connected at the center of the bottom surface of the built-in sealing plate.
[0009] A further improvement of this utility model is that the bottom end of the reset spring is fixedly connected to the bottom of the inner wall of the sampling cylinder.
[0010] A further improvement of this utility model is that the outer wall of the built-in sealing plate is slidably connected to the inner wall of the sampling tube.
[0011] A further improvement of this utility model is that the collar mounting bracket is detachably fixed to the outer wall of the buoyancy collar by fastening screws.
[0012] A further improvement of this utility model is that the collar mounting bracket is detachably fixed to the top of the connecting rod by a fastening bolt passing through its top, and the bottom end of the fastening bolt is threaded to the inner wall of the top of the connecting rod.
[0013] A further improvement of this utility model is that: a drainage bottom pipe is fixedly connected to the bottom end of the sampling tube, and a bottom pipe cap for sealing is inserted into the inner wall of the drainage bottom pipe near the bottom end.
[0014] A further improvement of this utility model is that: a filter cylinder sealing cover is detachably and fixedly connected to the top of the barrier filter cylinder, and a traction line is fixedly connected to the upper surface of the filter cylinder sealing cover.
[0015] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0016] 1. This utility model provides a sampling device for environmental monitoring instruments. The unique design of the buoyancy ring provides an effective means for precise control of sampling depth. Because its volume can be flexibly changed, the buoyancy it experiences also changes accordingly. When the volume of the buoyancy ring increases, when the filter cylinder descends a short distance, the buoyancy it experiences can quickly increase to a level sufficient to push the internal sealing plate upwards, thereby opening the water inlet earlier to begin sampling. This allows for efficient sampling operations in shallower waters or for monitoring at specific shallow depths. Conversely, when the volume of the buoyancy ring decreases, the buoyancy it experiences is relatively small. Only when the filter cylinder descends to a greater depth and the water pressure further increases, making the buoyancy sufficient to overcome the relevant resistance, can the internal sealing plate be pushed upwards to open the water inlet and complete sampling. This allows for precise sampling operations in deeper waters. This method of adjusting the sampling depth based on the volume of the buoyancy ring greatly expands the application scenarios of the device. Whether it is the shallow areas of rivers and lakes, the deep water areas, or the aquatic environment with different depth stratification monitoring requirements, the device can accurately adapt and efficiently complete the water sample collection task at different depths, significantly improving the device's adaptability and flexibility to complex and diverse aquatic environments and different monitoring task requirements.
[0017] 2. This utility model provides a sampling device for environmental monitoring instruments, which demonstrates excellent convenience in the sample transfer process. When transferring the river water sample from the sampling tube after water sample collection, the operation is simple and efficient. First, the counterweight is easily removed from the threaded bottom tube by rotation. This step effectively removes the counterweight constraint from the bottom of the device, preparing for subsequent drainage operations. Next, the bottom tube cap located near the bottom of the drainage tube is removed. At this point, the sample in the sampling tube can be smoothly discharged under its own gravity. Furthermore, to further enhance the precise control of the drainage process, the bottom tube cap can be replaced with a suitable rotary control valve. By rotating the opening of the control valve, the discharge speed and flow rate of the sample can be precisely controlled, meeting the precise requirements of different experiments or analyses regarding the amount and speed of sample transfer. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a detailed structural diagram of the present invention;
[0020] Figure 3 This is a schematic diagram showing the structural details of the sampling cylinder of this utility model;
[0021] Figure 4 This is an enlarged schematic diagram of the structure at point A of this utility model.
[0022] In the diagram: 1. Sampling assembly; 2. Barrier filter cartridge; 3. Filter cartridge cover; 4. Traction line; 5. Counterweight; 6. Sampling cylinder; 7. Buoyancy collar; 8. Collar mounting bracket; 9. Internal sealing plate; 10. Return spring; 11. Drainage bottom pipe; 12. Bottom pipe cover; 13. Fastening screw; 14. Connecting rod; 15. Fastening bolt; 16. Threaded bottom pipe; 17. Water inlet. Detailed Implementation
[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] The present invention will be further described in detail below with reference to embodiments:
[0025] Example 1
[0026] like Figure 1-4 As shown, this utility model provides a sampling device for an environmental monitoring instrument, including a sampling component 1. The sampling component 1 includes a barrier filter cylinder 2. The bottom end of the barrier filter cylinder 2 is threadedly connected to a counterweight block 5 for counterweighting through a threaded bottom tube 16.
[0027] A sampling cylinder 6 is fixedly connected to the bottom of the inner wall of the filter cylinder 2. A buoyancy collar 7 is movably sleeved on the outer wall of the sampling cylinder 6. A collar mounting bracket 8 is detachably fixedly connected to the outer wall of the buoyancy collar 7. A connecting rod 14 is detachably fixedly connected to the inner wall of the top of the collar mounting bracket 8. An internal sealing plate 9 is fixedly connected to the bottom end of the connecting rod 14. A water inlet hole 17 is opened on the outer wall of the sampling cylinder 6.
[0028] A return spring 10 is fixedly connected at the center of the bottom surface of the built-in closed plate 9.
[0029] The bottom end of the reset spring 10 is fixedly connected to the bottom of the inner wall of the sampling cylinder 6.
[0030] The outer wall of the built-in sealing plate 9 is slidably connected to the inner wall of the sampling cylinder 6.
[0031] Example 2
[0032] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, the collar mounting bracket 8 is detachably fixed to the outer wall of the buoyancy collar 7 by fastening screws 13.
[0033] The collar mounting bracket 8 is detachably fixed to the top of the connecting rod 14 by a fastening bolt 15 passing through its top, and the bottom end of the fastening bolt 15 is threaded to the inner wall of the top of the connecting rod 14.
[0034] The bottom end of the sampling tube 6 is fixedly connected to a drainage bottom pipe 11, and a bottom pipe cap 12 for sealing is inserted into the inner wall of the drainage bottom pipe 11 near the bottom end.
[0035] The top of the filter cartridge 2 is detachably and fixedly connected to a filter cartridge cover 3, and a traction line 4 is fixedly connected to the upper surface of the filter cartridge cover 3.
[0036] Regarding device maintenance, the structural design fully considers the convenience of later maintenance. The filter cartridge cover 3 and the barrier filter cartridge 2 are installed and fixed by a threaded connection. This connection method not only ensures good sealing during normal use of the device, preventing water sample leakage or the entry of external impurities, but also allows for easy and quick removal of the filter cartridge cover 3 from the barrier filter cartridge 2 with a simple rotation when maintenance, cleaning, or repair is required. This allows operators to easily access various internal components of the device, such as the sampling cylinder 6, the buoyancy ring 7, and the internal sealing plate 9, facilitating cleaning, inspection of wear, or necessary repair and replacement. Whether for routine cleaning and maintenance or to deal with emergencies such as component failure, this easy-to-disassemble structural design greatly reduces maintenance difficulty and costs, extends the service life of the device, and ensures the stability and reliability of the device during long-term use, providing a strong guarantee for the continuous and efficient conduct of environmental monitoring work.
[0037] The working principle of the sampling device used in this environmental monitoring instrument will be explained in detail below.
[0038] like Figure 1-4 As shown, during use, the sampling component 1 is lifted and placed into the water using the traction line 4 to sample the river water. After the sampling component 1 is placed into the river water, the counterweight 5 causes the barrier filter cylinder 2 to fall rapidly into the water. As the depth of the barrier filter cylinder 2 gradually increases, the buoyancy of the buoyancy collar 7 also increases. When the buoyancy collar 7 begins to move on the surface of the sampling cylinder 6 under the action of buoyancy, it will drive the internal sealing plate 9 to move upward on the inner wall of the sampling cylinder 6 through the collar mounting bracket 8. When the internal sealing plate 9 moves above the water inlet hole 17, the river water will gradually enter the sampling cylinder 6 through the water inlet hole 17, thereby sampling the river water.
[0039] When it is necessary to transfer the river water sample in the sampling cylinder 6, after rotating and removing the counterweight 5 from the threaded bottom tube 16, the bottom tube cap 12 can be removed from the drain bottom tube 11 to discharge the sample from the sampling cylinder 6. The bottom tube cap 12 can be replaced with a suitable rotary control valve for adjustment.
[0040] After the sample water in the sampling cylinder 6 is discharged, the built-in sealing plate 9 will be reset by the reset force of the reset spring 10, and re-close the water inlet hole 17.
[0041] The filter cartridge sealing cover 3 and the barrier filter cartridge 2 can be installed and fixed by threaded connection, which facilitates subsequent disassembly.
[0042] By changing the volume of the buoyancy collar 7, when the volume of the buoyancy collar 7 increases, the buoyancy it receives increases, and when the filter cylinder 2 descends to a certain depth, it can use its own buoyancy to push the internal sealing plate 9 upward to complete the sampling. Conversely, when the volume of the buoyancy collar 7 decreases, the buoyancy it receives decreases, and only when the filter cylinder 2 continues to descend to a greater depth can the buoyancy it receives push the internal sealing plate 9 upward to complete the sampling. This allows for adjustments to be made for sampling at different depths.
[0043] The barrier filter cartridge 2 can prevent impurities from entering during the sampling process.
[0044] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A sampling device for an environmental monitoring instrument, comprising a sampling component (1), characterized in that: The sampling assembly (1) includes a barrier filter cylinder (2), and the bottom end of the barrier filter cylinder (2) is threadedly connected to a counterweight block (5) for counterweighting via a threaded bottom tube (16). The sampling cylinder (6) is fixedly connected to the bottom of the inner wall of the barrier filter cylinder (2). A buoyancy collar (7) is movably sleeved on the outer wall of the sampling cylinder (6). A collar mounting bracket (8) is detachably fixedly connected to the outer wall of the buoyancy collar (7). A connecting rod (14) is detachably fixedly connected to the inner wall of the top of the collar mounting bracket (8). An internal sealing plate (9) is fixedly connected to the bottom end of the connecting rod (14). A water inlet hole (17) is opened on the outer wall of the sampling cylinder (6). A reset spring (10) is fixedly connected at the center of the bottom surface of the built-in closed plate (9).
2. The sampling device for an environmental monitoring instrument according to claim 1, characterized in that: The bottom end of the reset spring (10) is fixedly connected to the bottom of the inner wall of the sampling cylinder (6).
3. The sampling device for an environmental monitoring instrument according to claim 1, characterized in that: The outer wall of the built-in sealing plate (9) is slidably connected to the inner wall of the sampling cylinder (6).
4. The sampling device for an environmental monitoring instrument according to claim 1, characterized in that: The collar mounting bracket (8) is detachably fixed to the outer wall of the buoyancy collar (7) by fastening screws (13).
5. A sampling device for an environmental monitoring instrument according to claim 1, characterized in that: The collar mounting bracket (8) is detachably fixed to the top of the connecting rod (14) by a fastening bolt (15) passing through its top, the bottom end of the fastening bolt (15) being threaded to the inner wall of the top of the connecting rod (14).
6. The sampling device for an environmental monitoring instrument according to claim 1, characterized in that: The bottom end of the sampling tube (6) is fixedly connected to a drainage bottom pipe (11), and a bottom pipe cap (12) for sealing is inserted into the inner wall of the drainage bottom pipe (11) near the bottom end.
7. A sampling device for an environmental monitoring instrument according to claim 1, characterized in that: The top of the barrier filter cartridge (2) is detachably fixedly connected to a filter cartridge cover (3), and a traction line (4) is fixedly connected to the upper surface of the filter cartridge cover (3).