Multi-chamber gas analyzer

Abstract

The utility model discloses a multi-chamber gas analyzer and relates to the field of gas analyzers. The multi-chamber gas analyzer comprises an analyzer host, and a multi-chamber detection mechanism is arranged on the analyzer host; the multi-chamber detection mechanism comprises a plurality of detection chambers and a negative pressure pump, a multi-way electromagnetic valve is mounted between the plurality of detection chambers and the negative pressure pump, and gas detection probes are mounted at the bottoms of the detection chambers; the detection chamber comprises a sealing cavity and an air inlet pipe, an air inlet hole is formed in the side wall of the bottom end of the air inlet pipe, and a sealing piece is slidably arranged in the air inlet pipe and used for blocking the air inlet hole. According to the multi-chamber gas analyzer, the negative pressure pump utilizes the multi-way electromagnetic valve to sequentially pump out air in the plurality of sealing cavities, a container filled with gas to be detected is inserted from the end part of the gas inlet pipe, the gas to be detected is quickly sucked into the sealing cavities under the action of negative pressure in the sealing cavities, the gas detection probe performs gas detection, and multiple groups of samples are quickly detected; and the detection efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of gas analysis instruments, in particular to a multi-chamber gas analyzer. Background Technique

[0002] A gas analyzer is an instrument that uses sensors to detect and analyze various components in a gas, mainly including a thermal conductivity gas analyzer, an electro-chemical gas analyzer, and an infrared absorption analyzer. Among them, the thermal conductivity gas analyzer is the most widely used. It mainly relies on internal gas sensors for gas detection and analysis. By integrating multiple gas sensors on a detection probe, synchronous detection of multiple gases can be achieved.

[0003] The current pump suction type gas analyzers basically adopt a single-chamber type. A negative pressure pump is used to apply negative pressure to the chamber, and then the gas is sucked into the chamber. The gas is analyzed and detected by a detection probe in the chamber. However, in actual operation, different samples need to be detected sequentially, and sometimes the same sample needs to be detected multiple times to avoid the influence of accidental factors on the detection results. This makes the overall detection process take a relatively long time and the detection efficiency is low. Therefore, a multi-chamber gas analyzer is provided to solve the above problems. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a multi-chamber gas analyzer, which solves the problem that in actual operation, different samples need to be detected sequentially, and sometimes the same sample needs to be detected multiple times to avoid the influence of accidental factors on the detection results. This makes the overall detection process take a relatively long time and the detection efficiency is low.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: A multi-chamber gas analyzer includes an analyzer host. A detection port is provided at the top of the analyzer host, and a multi-chamber detection mechanism is arranged inside the detection port;

[0006] The multi-chamber detection mechanism includes a plurality of detection chambers and a negative pressure pump. A multi-way solenoid valve is installed between the plurality of detection chambers and the negative pressure pump, and a gas detection probe is installed at the bottom of the detection chamber;

[0007] The detection chamber includes a sealed chamber and an air inlet pipe fixedly arranged at the top of the sealed chamber. An air inlet hole is opened on the side wall at the bottom end of the air inlet pipe, and a sealing member is slidably arranged inside the air inlet pipe. The sealing member is used to block the air inlet hole.

[0008] Preferably, the analyzer host includes a housing and a display panel and button switches fixedly arranged on the front side of the housing.

[0009] Preferably, the detection port is opened at the rear side of the top of the outer casing, a cover plate is rotatably arranged on the outer surface of the detection port, and the top end of the air inlet pipe is fixedly installed in the detection port.

[0010] Preferably, an exhaust hole is opened on the back surface of the outer casing, and the output end of the negative pressure pump is connected to the exhaust hole.

[0011] Preferably, a connecting pipe is installed between the multi-way solenoid valve and each sealing cavity.

[0012] Preferably, the inner diameter of the lower end of the air inlet pipe is larger than that of the upper end, and the bottom end of the air inlet pipe is sealed.

[0013] Preferably, a spring is placed at the inner bottom of the air inlet pipe, the bottom end of the seal is abutted against the spring, both the seal and the spring are located at the lower end of the air inlet pipe, and a communication hole is opened on the outer wall of the top end of the seal.

[0014] The utility model discloses a multi-chamber gas analyzer, and the beneficial effects thereof are as follows: By starting the negative pressure pump and then using the multi-way solenoid valve to sequentially extract the air inside multiple sealing cavities, a negative pressure state is formed in the multiple sealing cavities. At this time, a container filled with the gas to be detected is inserted from the end of the air inlet pipe, the seal is squeezed downward, so that the spring is compressed. At this time, the communication hole is communicated with the air inlet hole. At this time, the gas to be detected in the container is quickly sucked into the sealing cavity under the action of the negative pressure inside the sealing cavity. Then the container is removed, and the gas is detected by the gas detection probe, so as to quickly perform multiple groups of sample detections, and the detection efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0016] Figure 1 It is a schematic front view structure diagram of the whole of the present utility model;

[0017] Figure 2 It is a schematic back view structure diagram of the whole of the present utility model;

[0018] Figure 3 It is a sectional view of the back structure of the outer casing of the present utility model;

[0019] Figure 4 It is a sectional view of the internal structure of the sealing cavity of the present utility model.

[0020] In the figure: 1. Analyzer main body; 11. Outer housing; 12. Display panel; 13. Button switch; 14. Detection port; 15. Cover plate; 16. Exhaust hole; 2. Multi-chamber detection mechanism; 21. Detection chamber; 211. Sealed chamber; 212. Inlet pipe; 213. Inlet hole; 214. Seal; 215. Communication hole; 216. Spring; 22. Negative pressure pump; 23. Multi-way solenoid valve; 24. Connecting pipe; 25. Gas detection probe. Detailed implementation manner

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] By providing a multi-chamber gas analyzer in the embodiments of the present application, the problem that in actual operation, different samples need to be detected sequentially, and sometimes the same sample needs to be detected multiple times to avoid the influence of accidental factors on the detection results is solved. This makes the overall detection process consume more time and the detection efficiency is low.

[0023] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0024] An embodiment of the present utility model discloses a multi-chamber gas analyzer.

[0025] As shown in the attached Figures 1-4 figure, it includes an analyzer main body 1. A detection port 14 is provided at the top of the analyzer main body 1, and a multi-chamber detection mechanism 2 is arranged inside the detection port 14;

[0026] The multi-chamber detection mechanism 2 includes a plurality of detection chambers 21 and a negative pressure pump 22. A multi-way solenoid valve 23 is installed between the plurality of detection chambers 21 and the negative pressure pump 22, and a gas detection probe 25 is installed at the bottom of the detection chamber 21;

[0027] The detection chamber 21 includes a sealed chamber 211 and an inlet pipe 212 fixedly arranged at the top of the sealed chamber 211. An inlet hole 213 is opened on the side wall at the bottom end of the inlet pipe 212, and a seal 214 is slidably arranged inside the inlet pipe 212. The seal 214 is used to block the inlet hole 213.

[0028] By using the multi-way solenoid valve 23, the air inside multiple sealing cavities 211 is evacuated in sequence, causing the multiple sealing cavities 211 to form a negative pressure state. At this time, the container filled with the gas to be detected is inserted from the end of the intake pipe 212, and the seal 214 is pressed downward, so that the gas to be detected in the container is quickly sucked into the sealing cavity 211 under the action of the negative pressure inside the sealing cavity 211. Then the container is removed, and the gas is detected by the gas detection probe 25, so as to quickly perform multiple groups of sample detections, and the detection efficiency is higher.

[0029] The analyzer main body 1 includes a housing 11, and a display panel 12 and a button switch 13 fixedly arranged on the front side of the housing 11. The display panel 12 is used to observe the gas detection data inside each sealing cavity 211, and the start and stop of the multi-way solenoid valve 23 and the negative pressure pump 22 are controlled through the button switch 13.

[0030] The detection port 14 is opened at the rear side of the top of the housing 11. A cover plate 15 is rotatably arranged on the outer surface of the detection port 14. The top end of the intake pipe 212 is fixedly installed in the detection port 14. During detection, the cover plate 15 is rotated to open, and the container filled with the gas to be detected is inserted from the end of the intake pipe 212 for gas introduction.

[0031] An exhaust hole 16 is opened on the back of the housing 11. The output end of the negative pressure pump 22 is connected to the exhaust hole 16. After the detection is completed, the negative pressure pump 22 evacuates the inside of each sealing cavity 211 in sequence through the multi-way solenoid valve 23, realizing the external discharge of the internal gas and forming a negative pressure state to wait for the next group of tests.

[0032] A connecting pipe 24 is installed between the multi-way solenoid valve 23 and each group of sealing cavities 211.

[0033] The inner diameter of the lower end of the intake pipe 212 is larger than that of the upper end. The bottom end of the intake pipe 212 is sealed. A spring 216 is placed at the inner bottom of the intake pipe 212. The bottom end of the seal 214 abuts against the spring 216. Both the seal 214 and the spring 216 are located at the lower end of the intake pipe 212. A communication hole 215 is opened on the outer wall of the top end of the seal 214. The container filled with the gas to be detected is inserted from the end of the intake pipe 212, and the seal 214 is pressed downward, causing the spring 216 to be compressed. At this time, the communication hole 215 is communicated with the intake hole 213. At this time, the gas to be detected in the container is quickly sucked into the sealing cavity 211 under the action of the negative pressure inside the sealing cavity 211. Then the container is removed. At this time, the spring 216 pushes the seal 214 upward, causing the communication hole 215 to be misaligned with the intake hole 213. At this time, the gas to be detected remains in the sealing cavity 211 and is detected by the gas detection probe 25.

[0034] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-chamber gas analyzer, comprising an analyzer main body (1), characterized in that, A detection port (14) is provided at the top of the analyzer main body (1), and a multi-chamber detection mechanism (2) is arranged inside the detection port (14); The multi-chamber detection mechanism (2) includes a plurality of detection chambers (21) and a negative pressure pump (22). A multi-way solenoid valve (23) is installed between the plurality of detection chambers (21) and the negative pressure pump (22). A gas detection probe (25) is installed at the bottom of the detection chamber (21); The detection chamber (21) includes a sealed chamber (211) and an intake pipe (212) fixedly arranged at the top of the sealed chamber (211). An intake hole (213) is formed in the side wall of the bottom end of the intake pipe (212). A seal (214) is slidably arranged inside the intake pipe (212), and the seal (214) is used to block the intake hole (213).

2. The multi-chamber gas analyzer according to claim 1, wherein: The analyzer main body (1) includes an outer housing (11) and a display panel (12) and a button switch (13) fixedly arranged on the front side of the outer housing (11).

3. The multi-chamber gas analyzer according to claim 2, wherein: The detection port (14) is opened at the rear side of the top of the outer housing (11). A cover plate (15) is rotatably arranged on the outer surface of the detection port (14). The top end of the intake pipe (212) is fixedly installed in the detection port (14).

4. The multi-chamber gas analyzer according to claim 2, characterized in that: An exhaust hole (16) is formed in the back surface of the outer housing (11), and the output end of the negative pressure pump (22) is connected to the exhaust hole (16).

5. A multi-chamber gas analyzer according to claim 1, characterized in that: A connecting pipe (24) is installed between the multi-way solenoid valve (23) and each sealed chamber (211).

6. The multi-chamber gas analyzer according to claim 1, wherein: The inner diameter of the lower end of the intake pipe (212) is larger than that of the upper end, and the bottom end of the intake pipe (212) is sealed.

7. The multi-chamber gas analyzer according to claim 6, wherein: A spring (216) is placed at the inner bottom of the intake pipe (212). The bottom end of the seal (214) abuts against the spring (216). Both the seal (214) and the spring (216) are located at the lower end of the intake pipe (212). A communication hole (215) is formed in the outer wall of the top end of the seal (214).

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