Multi-point sampling system
By designing a multi-point sampling system, utilizing one-way valves and airbags to prevent air mixing and protect the sampling bottles, the problems of inaccurate air sampling results and easy damage to sampling bottles were solved, achieving both accuracy and safety in air sampling.
Patent Information
- Application Number
- CN202520153612.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-01-22
AI Technical Summary
Existing air sampling devices cause inaccurate results due to air mixing within the sample bottles when collecting samples at different detection points. Furthermore, the lack of protection for the glass sampling bottles affects the accuracy and safety of the sampling process.
Design a multi-point sampling system, including a support, an air extraction assembly, a sampling assembly, and an airbag. A one-way valve and an airbag prevent air mixing, and the airbag protects the sampling bottle, ensuring that air is collected independently at each detection point and preventing damage to the bottle.
It improves the accuracy of air sampling results, prevents air mixing, protects sampling bottles, and facilitates the classification, storage, and identification of unused bottles.
Smart Images
Figure CN223926084U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of environmental monitoring and sampling technology, specifically a multi-point sampling system. Background Technology
[0002] Environmental monitoring samples include air, water, and soil. These samples represent the environmental health status of the study area at a certain point in time. The distribution of pollutants in ambient air is often uneven, and the air at different locations may be polluted to varying degrees. In order to accurately understand the status of pollutants in the air, it is necessary to sample air at multiple locations. The commonly used air sampling method is to use an air pump to draw air from the test point and then use sampling tubes to transport the air from different test points into different sample bottles for testing and later use.
[0003] When collecting air samples, the sample tube will retain sample air from the previous collection point, and the sample bottle itself will also retain air. This will cause sample air from different collection points to mix in the sample bottle, affecting the accuracy of the subsequent air test results. In addition, the sample bottle is generally made of high-temperature and corrosion-resistant borosilicate glass, which has good chemical stability for most gases, but most sampling devices lack the structure to protect the sample bottle. Utility Model Content
[0004] The purpose of this invention is to provide a multi-point sampling system to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A multi-point sampling system, comprising:
[0007] support;
[0008] An air extraction assembly is fixedly connected to a bracket. The air extraction assembly includes an air collection pipe, with an air bag fixedly connected to the top of the air collection pipe and an air pump installed at the bottom of the air collection pipe.
[0009] Multiple sampling components are installed in a ring at equal angles on the outside of the gas collecting pipe. Each sampling component includes a sampling bottle. The top and bottom of the sampling bottle are respectively connected and fixed with a first bent pipe and a second bent pipe. The first bent pipe is connected and installed in the gas collecting pipe.
[0010] Multiple airbags are respectively fitted and fixed to the outside of the sampling bottle at the corresponding position, and the airbags are connected and fixed to the curved tube.
[0011] There are two brackets, both of which are fixedly connected to the gas collecting tube and can support multiple sampling bottles.
[0012] Furthermore, the bracket includes a collar that is sleeved and fixed to the gas collecting pipe, and multiple support legs are evenly fixed on the outer side of the collar.
[0013] Furthermore, a one-way valve is fixedly installed at the top of the gas collecting pipe, and an L-shaped plate is fixed at the bottom of the gas collecting pipe.
[0014] Furthermore, the top of the first airbag is detachably fixed with a sealing plug, and the outer side of the second airbag is detachably fixed with a sealing plug.
[0015] Furthermore, the outer side of the gas collecting pipe is connected and fixed with multiple connecting pipes in an annular shape at equal angles, and the inner side of the connecting pipe is rotatably connected with a connector pipe that is screwed into the corresponding bend pipe.
[0016] Furthermore, the air outlet of the air pump is connected to and fixedly connected to an air outlet pipe, the air outlet pipe is connected to and fixedly connected to the bottom end of the air collection pipe, and a filter screen is installed and fixedly connected to the air inlet of the air pump.
[0017] Furthermore, the bracket includes a fixing ring that is fixedly connected to the gas collecting pipe, and multiple support plates are evenly fixed on the outer side of the fixing ring, with notches opened on the outer side of the support plates.
[0018] Compared with the prior art, the beneficial effects of this utility model are:
[0019] 1. Air is drawn from the detection points using a vacuum pump. The initial air entering the gas collecting tube is then transported to the first air bladder via a one-way valve at the top of the tube. This allows the air remaining in the gas collecting tube from the other detection points to be collected in the first air bladder. The valves on the first and second bends of the sampling bottle are opened, allowing the air from the detection points to be transported to the sampling bottle through the first bend. The air is then discharged from the second bend on the sampling bottle into the second air bladder. This process collects the remaining air from the sampling bottle from the other detection points. After the air in the gas collecting tube and sampling bottle is replaced by the air from the sampling points, the valve on the second bend is closed, allowing the air from the detection points to be collected in the sampling bottle. This effectively prevents the air remaining in the gas collecting tube and sampling bottle from mixing with the air from the sampling points, thus improving the accuracy of the sample air testing results.
[0020] 2. By attaching the second airbag to the sampling bottle, the airbag expands when air enters it. The expanded airbag protects the outside of the glass sampling bottle, effectively preventing damage from impacts. The expanded airbag also increases the size of the sampling bottle containing sample air, making it easier for users to visually select smaller bottles that do not contain sample air from among many for subsequent gas storage and reuse. In addition, multiple sampling bottles are connected and arranged on the outside of the gas collection tube, allowing users to collect air at different detection points and store it in categories. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the support and air extraction assembly structure in this utility model;
[0023] Figure 3 This is a utility model Figure 2 A magnified view of the structure at point A in the middle;
[0024] Figure 4 This is a schematic diagram of the structure of the gas collection tube, sampling component, and airbag of this utility model. Figure 1 ;
[0025] Figure 5 This is a schematic diagram of the structure of the gas collection tube, sampling component, and airbag of this utility model. Figure 2 ;
[0026] Figure 6 This is a schematic diagram of the sampling component structure in this utility model.
[0027] In the diagram: 100, bracket; 110, collar; 120, support leg; 200, vacuum assembly; 210, air collection pipe; 211, one-way valve; 212, L-shaped plate; 213, connecting pipe; 214, connector pipe; 220, airbag one; 221, sealing plug one; 230, vacuum pump; 231, air outlet pipe; 232, filter screen; 300, sampling assembly; 310, sampling bottle; 320, bend one; 321, threaded pipe; 330, bend two; 340, valve; 400, airbag two; 410, sealing plug two; 500, bracket. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Example 1, please refer to Figure 1 - Figure 6In this embodiment of the present invention, a multi-point sampling system includes a support 100, a suction assembly 200 fixed in the middle of the support 100, a gas collecting pipe 210, an air bag 220 fixedly connected to the top of the gas collecting pipe 210, a suction pump 230 installed at the bottom of the gas collecting pipe 210, and a plurality of sampling components 300 arranged in annular angles on the outer side of the gas collecting pipe 210. Each sampling component 300 includes a sampling bottle 310, a bend 320 and a bend 330 fixedly connected to the top and bottom of the sampling bottle 310, respectively. The bend 320 is connected to the gas collecting pipe 210, and an air bag 400 is sleeved on the outer side of the sampling bottle 310. The air bag 400 is connected to the bend 330.
[0030] Specifically, by connecting and installing an airbag 220 at the top of the gas collecting tube 210, and attaching an airbag 400 to the outside of the sampling bottle 310, the air remaining inside the gas collecting tube 210 can be transported to the airbag 220 for storage in the initial state, and the air remaining inside the sampling bottle 310 can be transported to the airbag 400 for storage. This allows the air remaining inside the gas collecting tube 210 and the sampling bottle 310 to be replaced by the air at the detection point, preventing the air inside the gas collecting tube 210 and the sampling bottle 310 from mixing with the air at the detection point. This helps improve the accuracy of the sample air delivery test results. The airbag 400, filled with air, surrounds the outside of the glass sampling bottle 310, which also protects the sampling bottle 310.
[0031] like Figure 2 As shown, in this embodiment, the support 100 includes a collar 110 that is sleeved and fixed to the air collecting pipe 210. Multiple support legs 120 are evenly fixed on the outer side of the collar 110, so that the multiple support legs 120 stably support the air collecting pipe 210 at the detection point for collecting air.
[0032] like Figure 2 and Figure 3 As shown, in this embodiment, a one-way valve 211 is installed and fixed at the top of the air collection pipe 210. The one-way valve 211 enables the retained air inside the air collection pipe 210 to be transported unidirectionally to the airbag 220 for storage, and will not flow back into the air collection pipe 210. An L-shaped plate 212 is fixed at the bottom of the air collection pipe 210. The L-shaped plate 212 is used to support and fix the air pump 230.
[0033] like Figure 2 and Figure 5As shown, in this embodiment, a sealing plug 221 is detachably fixed to the top of the first airbag 220, and a sealing plug 410 is detachably fixed to the outside of the second airbag 400. After the sampling work at a sampling point is completed, the sealing plug 221 on the first airbag 220 can be opened to allow the airbag 220 to discharge air, which is convenient for subsequent storage of the air delivered from the gas collecting tube 210 at the beginning of the sampling. The sealing plug 410 on the second airbag 400 is opened after the gas in the sampling bottle 310 is sent for testing to discharge the air in the second airbag 400, which is used to store the remaining air inside the sampling bottle 310 for later use.
[0034] like Figure 4 and Figure 6 As shown, in this embodiment, the outer side of the gas collecting pipe 210 is connected and fixed with multiple connecting pipes 213 in an annular shape at equal angles. The inner side of the connecting pipe 213 is rotatably connected with a connector pipe 214 that is screwed into the corresponding bend pipe 320. One end of the bend pipe 320 is connected and fixed with a threaded pipe 321.
[0035] In this embodiment, when it is necessary to remove the sampling bottle 310 from the gas collecting tube 210, the connector tube 214 is rotated to loosen it, so that the threaded tube 321 can be removed from the connector tube 214. Conversely, the threaded tube 321 is inserted into the connector tube 214, and then the connector tube 214 is tightened. During this process, the connector tube 214 rotates inside the connecting tube 213, which can make the threaded tube 321 screwed and fixed inside the connector tube 214, making it convenient for the sampling bottle 310 and the gas collecting tube 210 to be connected and installed through the bend 320.
[0036] like Figure 3 As shown, in this embodiment, the air outlet end of the air pump 230 is connected to and fixed with an air outlet pipe 231, and the air outlet pipe 231 is connected to and fixed with the bottom end of the air collection pipe 210. The air inlet end of the air pump 230 is installed and fixed with a filter screen 232, which can filter dust in the air.
[0037] like Figure 4 As shown, in this embodiment, valves 340 are installed on the outside of both the first bend 320 and the second bend 330. Opening both valves 340 at the same time allows air to pass through the sampling bottle 310 and replace the original air inside the sampling bottle 310. Only opening the valve 340 on the first bend 320 makes it convenient to store sample air inside the sampling bottle 310.
[0038] Example 2, based on Example 1, in order to enable the gas collecting tube 210 to stably support multiple sampling bottles 310 and air bag 2 400.
[0039] like Figure 4 and Figure 5As shown, in this embodiment, the bracket 500 includes a fixing ring fixedly connected to the gas collecting pipe 210. Multiple support plates are evenly fixed on the outer side of the fixing ring. The outer side of the support plate has a notch. When the sampling bottle 310 is installed, the port of the second bent tube 330 at the bottom of the sampling bottle 310 is engaged with the notch. The threaded tube 321 of the first bent tube 320 at the top of the sampling bottle 310 is inserted into the connector tube 214. The support plate can support the sampling bottle 310 and the second airbag 400.
[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A multipoint sampling system, characterized in that Include: Support (100); Exhaust assembly (200), fixedly connected with the support (100), the exhaust assembly (200) includes a gas collecting pipe (210), the top of the gas collecting pipe (210) is communicated and fixed with a gas bag one (220), the bottom of the gas collecting pipe (210) is communicated and installed with an exhaust pump (230); A plurality of sampling assemblies (300) are installed at the outside of the gas collecting pipe (210) in a ring shape and at equal angles, the sampling assembly (300) includes a sampling bottle (310), the top and bottom of the sampling bottle (310) are respectively communicated and fixed with a bend pipe one (320) and a bend pipe two (330), the bend pipe one (320) is communicated and installed with the gas collecting pipe (210); A plurality of gas bag two (400) are respectively sleeved and fixed at the outside of the corresponding position sampling bottle (310), the gas bag two (400) is communicated and fixed with the bend pipe two (330); The bracket (500) is two, which are fixedly connected with the gas collecting pipe (210) and can support a plurality of sampling bottles (310).
2. The multipoint sampling system of claim 1, wherein, The support (100) includes a sleeve ring (110) sleeved and fixed with the gas collecting pipe (210), a plurality of support legs (120) are uniformly fixed on the outside of the sleeve ring (110).
3. The multipoint sampling system of claim 1, wherein, The top end of the gas collecting pipe (210) is installed and fixed with a one-way valve (211), and the bottom of the gas collecting pipe (210) is fixed with an L-shaped plate (212).
4. The multipoint sampling system of claim 1, wherein, The top of the gas bag one (220) is detachably fixed with a sealing plug one (221), and the outside of the gas bag two (400) is detachably fixed with a sealing plug two (410).
5. The multipoint sampling system of claim 1, wherein, The outside of the gas collecting pipe (210) is communicated and fixed with a plurality of connecting pipes (213) in a ring shape and at equal angles, the inside of the connecting pipe (213) is rotatably connected with a joint pipe (214) which is screwed with the corresponding position bend pipe one (320).
6. The multipoint sampling system of claim 1, wherein, The exhaust end of the exhaust pump (230) is communicated and fixed with an exhaust pipe (231), the exhaust pipe (231) is communicated and fixed with the bottom end of the gas collecting pipe (210), and the air inlet end of the exhaust pump (230) is installed and fixed with a filter screen (232).
7. The multipoint sampling system of claim 1, wherein, The bracket (500) includes a fixed ring fixedly connected with the gas collecting pipe (210), a plurality of supporting plates are uniformly fixed on the outside of the fixed ring, and a notch is formed on the outside of the supporting plate.