CN212110437U - Air resistance testing device for sampling medium - Google Patents
Air resistance testing device for sampling medium Download PDFInfo
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- CN212110437U CN212110437U CN202021290178.1U CN202021290178U CN212110437U CN 212110437 U CN212110437 U CN 212110437U CN 202021290178 U CN202021290178 U CN 202021290178U CN 212110437 U CN212110437 U CN 212110437U
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Abstract
The utility model discloses an air resistance testing device of a sampling medium, which comprises a box body, a voltage stabilizer and a pressure gauge, wherein a panel is arranged inside the box body, and an air inlet and an air outlet for communicating a sampling pump are arranged on the panel; the pressure stabilizer is internally provided with a first cavity, a second cavity, an inlet communicated with the first cavity and an outlet communicated with the second cavity, the inlet is communicated with the air inlet through a first silicone tube, and the outlet is communicated with the air outlet through a second silicone tube; and a detection tube is arranged on the second silicone tube, and a detection port on the pressure gauge is communicated with the detection tube. The utility model can quickly carry out air resistance test before sampling task, carry out resistance detection to the sampling medium and judge whether the sampling medium meets the standard; the voltage stabilizer enables the airflow to be more stable, reduces the influence of the pulse airflow on the pressure gauge and enables the measured data to be more accurate; the portable indoor environment monitoring device is small in size, convenient to carry and suitable for being applied to various occasions such as indoor environment, occupational health or environment monitoring.
Description
Technical Field
The utility model relates to an engineering test technical field, concretely relates to air resistance testing arrangement of sampling medium.
Background
At present, activated carbon tubes, silicone tubes and the like (hereinafter referred to as sampling media) on the market are produced in a manual filling mode, the manually produced sampling media inevitably have air resistance deviation, the resistance of the activated carbon tubes is required to be between 2 and 4kpa according to national standards, and carbon tubes which do not conform to the resistance range are invalid for on-site sampling, so that the sampling media are subjected to air resistance testing before sampling to ensure that sampling samples are effective.
In order to specially detect the gas resistance value of the adsorption tube, Chinese utility model patent CN 202956244U discloses a device for measuring the gas resistance value of the sampling adsorption tube, which comprises a shell (1), wherein the shell is respectively provided with a power switch (3), a liquid crystal display (4), a power socket (5) and an air nozzle (2) connected with the sampling adsorption tube, the shell (1) is internally provided with a micro air pump (6) connected with the air nozzle, the air path of the air nozzle (2) connected with the micro air pump (6) is also connected with a pressure difference sensor (7), and the shell is internally provided with a singlechip control system for controlling the micro air pump (6) to control the air flow rate at 0.5L/min; the control system consists of a key display driving board (8), an F410 control circuit board (9) and a power supply board (10). This technical scheme has realized the test to the sampling adsorption tube, and portable has solved the sampling error problem.
However, the single chip microcomputer control system and the differential pressure sensor are adopted in the scheme, and the following defects are still provided:
(1) a pressure difference sensor is arranged, and a liquid crystal display screen is independently arranged, so that the number of parts is large;
(2) because the air current of each test point is unstable, inside gas circuit does not have voltage regulator, causes the detection precision to receive the influence of air current easily.
In view of this, it is urgently needed to improve the existing resistance detection device for the air sampling medium, so as to simplify the structure and improve the detection accuracy.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that there is the structure complicacy in the resistance detection structure of current air sampling medium, detects the problem that the precision is low.
In order to solve the technical problem, the utility model provides an air resistance testing arrangement of sampling medium, include:
the sampling device comprises a box body, a sampling pump and a control device, wherein a panel is arranged in the box body, and an air inlet and an air outlet which are used for communicating the sampling pump are formed in the panel;
the pressure stabilizer is internally provided with a first cavity, a second cavity, an inlet communicated with the first cavity and an outlet communicated with the second cavity, the inlet is communicated with the air inlet through a first silicone tube, and the outlet is communicated with the air outlet through a second silicone tube;
the pressure gauge is provided with a detection tube on the second silicone tube, and a detection port on the pressure gauge is communicated with the detection tube.
In another preferred embodiment, the panel is provided with a mounting hole, the pressure gauge is fixed on the mounting hole, and the voltage stabilizer is fixed on the bottom surface of the panel.
In another preferred embodiment, the inlet and the outlet are disposed outside the first cavity, and the interior of the outlet extends through the first cavity into the second cavity to form an air outlet channel.
In another preferred embodiment, the outside of the voltage stabilizer is covered with a layer of silica gel sleeve, and two ends of the silica gel sleeve are opened.
In another preferred embodiment, the detection tube is a three-way tube and is respectively communicated with the two ends of the fracture of the second silicone tube and the detection port.
In another preferred embodiment, the box body is made of plastic, and comprises:
the free end of the upper cover is provided with a soft buckle,
the lower cover, its free end is equipped with the stereoplasm draw-in groove, soft buckle with stereoplasm draw-in groove joint realizes the upper cover with the lower cover is sealed.
In another preferred embodiment, a timer for calculating the test time is further arranged in the box body.
In another preferred embodiment, an interface for connecting a power adapter for supplying power to the pressure gauge is arranged on the box body.
Compared with the prior art, the utility model discloses, connect sampling medium promptly first silicone tube through the air inlet, the gas outlet is connected with the sampling pump and is bled and produce the negative pressure, and the gas flow through the stabiliser, successively get into first cavity, second cavity and accomplish the secondary stabilization, take out through second silicone tube, gas outlet in proper order again, and the last sense tube of second silicone tube makes the manometer record the pressure of second silicone tube to demonstrate the air resistance on the manometer, had following advantage:
1. before the sampling task is carried out, the air resistance test can be carried out quickly, the resistance detection is carried out on the sampling medium, and whether the sampling medium meets the standard or not is judged.
2. The voltage stabilizer enables the airflow to be more stable, reduces the influence of the pulse airflow on the pressure gauge and enables the measured data to be more accurate.
3. The portable indoor environment monitoring device is small in size, convenient to carry and suitable for being applied to various occasions such as indoor environment, occupational health or environment monitoring.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is a schematic structural view of the lower part of the panel according to the present invention.
Detailed Description
The utility model provides an air resistance testing arrangement of sampling medium connects sampling medium through the air inlet and is first silicone tube, and the gas outlet is connected with the sampling pump and is bled and produce the negative pressure, and the gas flow through the stabiliser successively gets into first cavity, second cavity and accomplishes the secondary stabilization, takes out through second silicone tube, gas outlet again in proper order, and the last sense tube of second silicone tube makes the manometer record the pressure of second silicone tube to show air resistance on the manometer. Therefore utilize the utility model discloses, can carry out the air resistance test fast before carrying out the sampling task. The stabiliser makes the air current more steady, reduces the influence of pulse air current to the manometer, plays steady voltage effect and overvoltage protection effect, makes the data of manometer measurement more accurate, prevents to surpass the range of manometer and causes the damage. The invention is described in detail below with reference to the drawings and the detailed description.
As shown in FIG. 1 and FIG. 2, the utility model provides a pair of air resistance testing arrangement of sampling medium, including box, stabiliser 40 and manometer 30. The interior of the box body is provided with a panel 20, and the panel 20 is provided with an air inlet 21 and an air outlet 22 for communicating with a sampling pump. Be equipped with first cavity and second cavity in the stabiliser 40 to and the import that communicates on the first cavity with the export that communicates the second cavity, the import is through first silicone tube 41 and air inlet 21 intercommunication, the export is through second silicone tube 42 and gas outlet 22 intercommunication. The second silicone tube 42 is provided with a detection tube 43, and the detection port 31 of the pressure gauge 30 is communicated with the detection tube 43. The utility model discloses in, the range can be selected as required in the demonstration of manometer 30, the corresponding dial plate of configuration.
The utility model discloses, connect sampling medium through air inlet 21 and be first silicone tube 41, gas outlet 22 is connected with the sampling pump and is bled and produce the negative pressure, and the gas flow is through stabiliser 40, successively gets into first cavity, second cavity and accomplishes the secondary stabilization, takes out through second silicone tube 42, gas outlet 22 in proper order again, and the last sense tube 43 of second silicone tube 42 makes manometer 30 record second silicone tube 42's pressure to demonstrate air resistance on the manometer 30. Therefore utilize the utility model discloses, can carry out the air resistance test fast before carrying out the sampling task. The voltage stabilizer 40 makes the air current more steady, reduces the influence of pulse air current to the manometer 30, plays steady voltage effect and overvoltage protection effect, makes the data of manometer 30 measurement more accurate, prevents to surpass the range of manometer 30 and causes the damage.
In another preferred embodiment, a mounting hole is formed on the panel 20, the pressure gauge 30 is fixed to the mounting hole, and the pressurizer 40 is fixed to the bottom surface of the panel 20. In this embodiment, the pressure gauge 30 is fixed on the panel 20, and the inside of the pressure gauge 30 is directly communicated with the pressure stabilizer 40, thereby performing the functions of detection, observation and display.
In another preferred embodiment, the inlet and the outlet are disposed outside the first cavity, and the interior of the outlet extends through the first cavity into the second cavity to form the outlet passage. In this embodiment, the inlet and the outlet are disposed on the same side, which facilitates the processing of the voltage stabilizer 40 and the installation of the first silicone tube 41 and the second silicone tube 42.
In another preferred embodiment, the stabilizer 40 is covered with a silicone sleeve 50, and both ends of the silicone sleeve 50 are open. In this embodiment, stabiliser 40 is used for stabilizing gaseous going on, prevents to cause because the air current is unstable to detect the precision and reduces, and silica gel cover 50 can effectively alleviate stabiliser 40 because the vibrations that the air current strikes and cause. The two ends of the silica gel sleeve 50 are open, so that the silica gel sleeve can be conveniently taken down by hands to be replaced or operated.
In another preferred embodiment, the detecting tube 43 is a three-way tube, and is respectively communicated with the detection port 31 and two ends of the fracture of the second silicone tube 42. In this embodiment, the detecting tube 43 is a three-way tube, and is conveniently installed with the detecting port 31 of the pressure gauge 30, and the length can be adjusted, so that the installation is convenient.
In another preferred embodiment, the box body is made of plastic and comprises an upper cover 11 and a lower cover 12. The free end of the upper cover 11 is provided with a soft buckle 13, the free end of the lower cover 12 is provided with a hard clamping groove 14, and the soft buckle 13 is clamped with the hard clamping groove 14 to realize the sealing of the upper cover 11 and the lower cover 12.
In this embodiment, the upper cover 11 and the lower cover 12 are clamped, and the combination of the hard plastic and the soft plastic is adopted, so that the tightness of clamping can be further improved, and the sealing and waterproof functions can be realized.
In another preferred embodiment, a timer for calculating the test time is further provided in the box body. In this embodiment, the timer can record the test time, makes things convenient for operating personnel to accomplish the test in the regulation time.
In another preferred embodiment, the housing is provided with an interface for connection to a power adapter for supplying power to the pressure gauge 30. In this embodiment, the box is applicable in multiple interface, has further enlarged the use occasion, and the flexibility is strong, and the commonality is also higher.
The utility model discloses, connect sampling medium through the air inlet and be first silicone tube, the gas outlet is connected with the sampling pump and is bled and produce the negative pressure, and the gas flow is through the stabiliser, successively gets into first cavity, second cavity and accomplishes the secondary stabilization, takes out through second silicone tube, gas outlet in proper order again, and the last test tube of second silicone tube makes the manometer record the pressure of second silicone tube to show the air resistance on the manometer. Therefore utilize the utility model discloses, can carry out the air resistance test fast before carrying out the sampling task. The stabiliser makes the air current more steady, reduces the influence of pulse air current to the manometer, plays steady voltage effect and overvoltage protection effect, makes the data of manometer measurement more accurate, prevents to surpass the range of manometer and causes the damage.
The present invention is not limited to the above-mentioned best mode, and any person should learn the structural change made under the teaching of the present invention, all with the present invention has the same or similar technical solution, all fall into the protection scope of the present invention.
Claims (8)
1. An air resistance test device of a sampling medium, comprising:
the sampling device comprises a box body, a sampling pump and a control device, wherein a panel is arranged in the box body, and an air inlet and an air outlet which are used for communicating the sampling pump are formed in the panel;
the pressure stabilizer is internally provided with a first cavity, a second cavity, an inlet communicated with the first cavity and an outlet communicated with the second cavity, the inlet is communicated with the air inlet through a first silicone tube, and the outlet is communicated with the air outlet through a second silicone tube;
the pressure gauge is provided with a detection tube on the second silicone tube, and a detection port on the pressure gauge is communicated with the detection tube.
2. The air resistance testing device of claim 1, wherein a mounting hole is formed in the panel, the pressure gauge is fixed to the mounting hole, and the pressure stabilizer is fixed to the bottom surface of the panel.
3. The air resistance testing device according to claim 1, wherein the inlet and the outlet are disposed outside the first cavity, and an interior of the outlet extends through the first cavity into the second cavity to form an air outlet channel.
4. The air resistance testing device of claim 1, wherein a silicone sleeve covers the outer side of the pressure stabilizer, and two ends of the silicone sleeve are open.
5. The air resistance testing device of claim 1, wherein the detection tube is a three-way tube and is respectively communicated with two ends of the fracture of the second silicone tube and the detection port.
6. The air resistance testing device of claim 1, wherein the box body is made of plastic, and comprises:
the free end of the upper cover is provided with a soft buckle,
the lower cover, its free end is equipped with the stereoplasm draw-in groove, soft buckle with stereoplasm draw-in groove joint realizes the upper cover with the lower cover is sealed.
7. The air resistance testing device according to claim 1, wherein a timer for counting a test time is further provided in the case.
8. The air resistance testing device according to claim 1, wherein an interface for connecting a power adapter for supplying power to the pressure gauge is provided on the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021290178.1U CN212110437U (en) | 2020-07-03 | 2020-07-03 | Air resistance testing device for sampling medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021290178.1U CN212110437U (en) | 2020-07-03 | 2020-07-03 | Air resistance testing device for sampling medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212110437U true CN212110437U (en) | 2020-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021290178.1U Active CN212110437U (en) | 2020-07-03 | 2020-07-03 | Air resistance testing device for sampling medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212110437U (en) |
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2020
- 2020-07-03 CN CN202021290178.1U patent/CN212110437U/en active Active
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