CN218067276U

CN218067276U - Aerosol personal respiration sampler

Info

Publication number: CN218067276U
Application number: CN202221872174.3U
Authority: CN
Inventors: 熊文俊; 黄金峰; 钟华强
Original assignee: Guangzhou Lantaisheng Technology Co ltd
Current assignee: Guangzhou Lantaisheng Technology Co ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-12-16
Anticipated expiration: 2032-07-15

Abstract

The embodiment of the utility model provides an aerosol personal respiration sampler, which comprises a sampling head, a processor, a battery, an air pump and a flowmeter; the air pump is connected with the sampling head through a flexible pipe; a contraction pipe is arranged between the sampling head and the air pump; the inlet of the flow meter is communicated with one end of the contraction pipe close to the sampling head, and the outlet of the flow meter is communicated with the other end of the contraction pipe; the battery is electrically connected with the processor, the air pump and the flowmeter respectively; the top of the sampling head is provided with an air hole; and a filter membrane is arranged in the sampling head. In the technical scheme, the flow meter connected in series in the air inlet pipeline in the conventional technology is changed into a mode of being connected with the air inlet pipeline in parallel, so that the flow meter with small flow can be used for replacing a large-flow meter, the volume of equipment is effectively reduced, and the aerosol personal respiration sampler is more convenient to carry.

Description

Aerosol personal respiration sampler

Technical Field

The utility model relates to a personal radiation detection technical field especially relates to an aerosol individual respiration sample thief.

Background

When working in a place containing radioactive materials in an air environment, for example, when performing operations such as nuclear power plant waste disposal, it is necessary to monitor in real time whether the radioactive materials are harmful to the health of the operating personnel. Considering the difficulty of monitoring the personal biological sample of the transuranics, the personal irradiation dose evaluation of the lower dose level under the normal working condition is generally carried out with reference evaluation by adopting the air concentration. For the evaluation, in the prior art, the operator usually carries the aerosol personal respiration sampler to simulate the human respiration and sample the aerosol in the air, the sampling flow of the aerosol personal respiration sampler is close to the human respiration flow, the radioactive aerosol has higher adsorption efficiency, and the use in one day of working time can be met. An air pump is arranged in the aerosol personal respiration sampler, a filter membrane used for collecting radioactive substances is arranged on the sampler, and a certain negative pressure is generated in a pipeline through the air pump, so that the environmental gas passes through the filter membrane and is adsorbed onto the filter membrane. After the sampling operation is finished, the filter membrane can be placed on a related analysis instrument, and data such as flow recorded by the sampling machine are sent to the analysis instrument, so that finally required data are obtained.

In the process of implementing the present invention, the inventor finds that there are at least the following problems in the prior art:

the volume of the flow meter in the volume of the aerosol personal respiration sampler in the prior art is large, occupies a large space, and is not beneficial to the internal spatial arrangement of the sampler, so that the volume of the whole aerosol personal respiration sampler is also large, and the aerosol personal respiration sampler is not convenient to carry. Therefore, how to reduce the volume of the aerosol personal breath sampler and make the aerosol personal breath sampler more portable is a problem to be solved.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides an individual breathing sample thief of aerosol for improve the individual breathing sample thief of aerosol bulky, the not portable's of prior art problem.

In order to achieve the above object, an embodiment of the present invention provides an aerosol personal respiration sampler, which includes a sampling head, a processor, a battery, an air pump, and a flow meter; the air pump is connected with the sampling head through a flexible pipe; a contraction pipe is arranged between the sampling head and the air pump; the inlet of the flowmeter is communicated with one end of the contraction tube close to the sampling head, and the outlet of the flowmeter is communicated with the other end of the contraction tube; the battery is electrically connected with the processor, the air pump and the flowmeter respectively; the top of the sampling head is provided with an air hole; the interior of the sampling head is provided with a filter membrane.

Furthermore, the number of the air pumps is two, and the two air pumps are arranged in parallel.

Furthermore, the sampling head comprises a lower part and an upper part, and the lower part and the upper part are detachably connected; the top surface of the upper part of the sampling head is provided with a plurality of air holes.

Furthermore, a hook is arranged on the side part of the lower part of the sampling head.

Further, the aerosol personal respiration sampler also comprises a shell; the shell comprises an upper shell and a lower shell connected below the upper shell in a clamping manner; the processor, the battery, the air pump and the flowmeter are all arranged in the shell; a portion of the flexible tube, and the air pump are located outside the housing.

Furthermore, the upper shell is also provided with a key and a display screen; the processor is electrically connected with the keys and the display screen respectively.

Further, the upper shell is also provided with a USB port; the USB port is electrically connected with the processor.

Furthermore, a power supply port is also arranged on the upper shell; the power port is electrically connected with the processor.

Further, a fixed bracket is also arranged in the shell; the main body of the fixed bracket is of a vertical plate-shaped structure.

Further, the air pump and the flow meter are arranged on one side of the fixed support; the battery is a vertically arranged plate-shaped structure and is arranged on the other side of the fixed support.

The technical scheme has the following beneficial effects:

in the technical scheme, the mode that the flow meter connected in series in the air inlet pipeline in the conventional technology is connected in parallel with the air inlet pipeline is changed. Through reducing the internal diameter of pipeline in the gas circuit, connect the flowmeter of low discharge at the pipeline both ends that this internal diameter reduces, can realize measuring the flow of large-traffic gas circuit with low flowmeter through the pipeline diameter ratio and actual scale to effectively reduce equipment volume, make the individual breathing sample thief of aerosol portable more.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an aerosol personal breath sampler according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a flow meter of an aerosol personal breath sampler according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a control system in an embodiment of the present invention;

reference numerals: 1. a power port; 2. a USB port; 3. pressing a key; 4. a processor; 5. a flow meter; 6. a gas path distributor; 7. a battery; 8. fixing a bracket; 9. a gasket; 10. a lower housing; 11. a branch hose; 12. an air pump; 13. a main path hose; 14. a display screen; 15. an upper housing; 16. a sampling head connecting pipe; 17. a flowmeter connecting pipe; 18. an upper joint; 19. a lower joint; 20. a shrink tube; 21. hooking; 22. the lower part of the sampling head; 23. the upper part of the sampling head.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

As shown in fig. 1 and fig. 2, the embodiment of the utility model provides an aerosol personal respiration sample thief, its characterized in that includes: a sampling head, a processor 4, a battery 7, an air pump 12 and a flowmeter 5; the air pump 12 is connected with the sampling head through a flexible pipe; a contraction tube 20 is arranged between the sampling head and the air pump 12; the inlet of the flowmeter 5 is communicated with one end of the shrinkage tube 20 close to the sampling head, and the outlet of the flowmeter 5 is communicated with the other end of the shrinkage tube 20; the battery 7 is electrically connected with the processor 4, the air pump 12 and the flowmeter 5 respectively; the top of the sampling head is provided with an air hole; and a filter membrane is arranged in the sampling head.

As mentioned above, in the prior art, the flow meter is connected in series in the gas path, that is, the sampling head, the flow meter and the air pump are connected in series through the flexible pipeline in sequence. When designing the aerosol personal respiration sampler with a large rated flow, a large-flow meter must be configured, and the large-rated flow meter must have a larger volume, so that the aerosol personal respiration sampler is difficult to optimally arrange in a shell of the aerosol personal respiration sampler, thereby causing the aerosol personal respiration sampler to have a larger volume and generating adverse effects on portability.

Through analysis and actual measurement, in the application, the inventor changes the configuration scheme of the prior art, and arranges a flowmeter 5 with rated flow less than the requirement in a gas circuit in a parallel mode. As shown in the figure, the flexible tube comprises a sampling head connecting tube 16, a main branch hose 13, a branch hose 11 and the like, the top end of the sampling head connecting tube 16 is connected to the sampling head, and aerosol gas is introduced into the gas pump 12, so that the substances to be collected mixed in the gas are collected on the filter membrane when the gas passes through the filter membrane in the sampling head. The bottom end of the sampling head connecting pipe 16 is positioned in the shell and is connected with the main pipeline hose 13 through an upper joint 18, a contraction pipe 20 and a lower joint 19. After entering the inside of the housing, the sampling head connecting pipe 16 is connected with a main pipe hose 13 through an upper joint 18 and a lower joint 19, and the main pipe hose 13 is used for supplying air to a downstream air pump. And between the upper joint 18 and the lower joint 19, a section of shrink tube 20 with an inner diameter smaller than the pipe diameter of the main hose 13 and the pipe diameter of the sampling head connecting pipe 16 needs to be arranged, and a flow meter connecting pipe 17 is respectively connected to the side of the shrink tube 20, namely the inlet end and the outlet end of the shrink tube 20, so that the gas sent by the sampling head connecting pipe 16 is divided: one part directly enters the air pump 12 through the contraction tube 20 and the main hose 13, and the other part flows into the flow meter 5 through the flow meter connection tube 17. In this connected mode, through the pipe diameter ratio (the pipe diameter ratio of sampling head connecting pipe 16 and shrink tube 20) and flowmeter 5's actual scale, can realize measuring the flow of large-traffic gas circuit with flowmeter 5 of low discharge, thereby realize replacing large-traffic flowmeter 5 with flowmeter 5 of low discharge, thereby reduced the space and taken by a wide margin, and the less flowmeter of volume more is favorable to spatial arrangement, further reduced the whole volume of aerosol personal respiration sample thief, the operating personnel of being convenient for carries.

The processor 4 comprises a plurality of chips and modules including a Micro Control Unit (MCU) and is used for controlling the power supply, the display screen 14, the keys 3, the air pump 12, the flow meter 5 and the like, so that the whole machine can run coordinately and stably. The structure of the device is schematically shown in figure 3.

Further, the number of the air pumps 12 is two, and the two air pumps 12 are arranged in parallel.

In order to obtain a larger flow rate, it is necessary to increase the flow rate of the air pump 12 in addition to increasing the measurement range of the flow meter 5. In order to facilitate spatial arrangement and reduce the volume of the whole machine, two air pumps 12 which are arranged in a left-right separation mode are adopted, and the two air pumps 12 are connected in parallel through a main hose 13 and a branch hose 11. Each air pump 12 has two ports. Between the main hose 13 and the branch hose 11, an air path distributor 6 is further provided for ease of arrangement. According to actual measurement requirements, the two air pumps 12 can be operated independently, and can also be operated simultaneously when a larger flow is required.

Further, the sampling head comprises a sampling head lower part 22 and a sampling head upper part 23, and the sampling head lower part 22 is detachably connected with the sampling head upper part 23; the top surface of the upper sampling head part 23 is provided with a plurality of air holes.

For the exchange of the filter membrane, the upper sampling head part 23 and the lower sampling head part 22 are preferably connected by means of screws or the like. Meanwhile, in order to obtain a better effect, a plurality of air holes may be formed on the top surface of the upper portion 23 of the sampling head.

Further, a hook 21 is arranged on the side of the lower sampling head part 22.

In the application, the hook 21 is arranged on the sampling head and is hung on the forehead collar of an operator through the hook 21, so that the height and the environment of the nasal cavity of a person can be simulated, and the result has a reference value.

Further, the aerosol personal breath sampler further comprises a housing; the shell comprises an upper shell 15 and a lower shell 10 connected below the upper shell 15 in a clamping manner; the processor 4, the battery 7, the air pump 12 and the flow meter 5 are all arranged inside the shell; a portion of the flexible tube, and the air pump 12 are located outside the housing.

Because the sampling head is placed in the collar of the operator and the device body is typically placed in a pocket, the sampling head is flexibly connected to the main body portion of the interior of the housing of the aerosol personal breath sampler via the sampling head connector tube 16. And the upper shell 15 and the lower shell 10 are connected in a clamping mode for the convenience of disassembly and maintenance.

Further, the upper shell 15 is also provided with a key 3 and a display screen 14; the processor 4 is electrically connected with the keys 3 and the display 14 respectively.

The keys 3 comprise a start key and an up-down adjusting key, wherein the start key is used for turning on/off the machine, and the up-down adjusting key is used for adjusting the set flow according to the requirement.

Further, the upper shell 15 is also provided with a USB port 2; the USB port 2 is electrically connected with the processor 4.

The USB port 2 is used for connecting an external device and can be used as a debug interface.

Further, the upper shell 15 is also provided with a power supply port 1; the power supply port 1 is electrically connected to the processor 4.

The power port 1 may be used to charge the battery 7.

Further, a fixing bracket 8 is also arranged in the shell; the main body of the fixing support 8 is a vertical plate-shaped structure. The air pump 12 and the flow meter 5 are arranged on one side of the fixed bracket 8; the battery 7 is a vertically arranged plate-shaped structure, and the battery 7 is arranged at the other side of the fixed bracket 8.

In the application, a fixed support 8 is arranged in the shell, the main body of the fixed support is of a vertical plate-shaped structure and is connected with a plurality of transversely arranged auxiliary structures, and the air pump 12 and the flowmeter 5 can be effectively fixed and connected in the shell through the fixed support 8; meanwhile, the battery 7 is fixed on the other side of the air pump, so that the space can be reasonably utilized, and the adverse effect of the heat generated by the components such as the air pump 12 and the like on the battery 7 can be avoided.

In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, the invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. To those skilled in the art; various modifications to these embodiments will be readily apparent, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An aerosol personal breath sampler, comprising: the device comprises a sampling head, a processor (4), a battery (7), an air pump (12) and a flowmeter (5); the air pump (12) is connected with the sampling head through a flexible pipe; a contraction tube (20) is arranged between the sampling head and the air pump (12); the inlet of the flowmeter (5) is communicated with one end of the contraction tube (20) close to the sampling head, and the outlet of the flowmeter (5) is communicated with the other end of the contraction tube (20); the battery (7) is electrically connected with the processor (4), the air pump (12) and the flowmeter (5) respectively; the top of the sampling head is provided with an air hole; and a filter membrane is arranged in the sampling head.

2. The aerosol personal breath sampler of claim 1 wherein there are two said air pumps (12) and two said air pumps (12) are arranged in parallel.

3. The aerosol personal breath sampler of claim 1 wherein said sampling head comprises a lower sampling head portion (22) and an upper sampling head portion (23), said lower sampling head portion (22) being removably connected to said upper sampling head portion (23); the top surface of the upper part (23) of the sampling head is provided with a plurality of air holes.

4. The aerosol personal breath sampler of claim 3 wherein said sampling head lower portion (22) is further provided with a hook (21) at a side thereof.

5. The aerosol personal breath sampler of claim 1, further comprising a housing; the shell comprises an upper shell (15) and a lower shell (10) connected below the upper shell (15) in a clamping mode; the processor (4), the battery (7), the air pump (12) and the flow meter (5) are all arranged inside the shell; a portion of the flexible tube, and the air pump (12) are located outside the housing.

6. The aerosol personal breath sampler according to claim 5 wherein said upper housing (15) is further provided with keys (3) and a display screen (14); the processor (4) is electrically connected with the keys (3) and the display screen (14) respectively.

7. The aerosol personal breath sampler of claim 5 wherein said upper housing (15) is further provided with a USB port (2); the USB port (2) is electrically connected with the processor (4).

8. The aerosol personal breath sampler of claim 5 wherein said upper housing (15) is further provided with a power port (1); the power supply port (1) is electrically connected with the processor (4).

9. The aerosol personal breath sampler of claim 5 wherein a stationary support (8) is further disposed within the housing; the main body of the fixed support (8) is of a vertical plate-shaped structure.

10. Aerosol personal breath sampler according to claim 9, wherein said air pump (12) and said flow meter (5) are arranged on one side of said fixed support (8); the battery (7) is of a vertically arranged plate-shaped structure, and the battery (7) is arranged on the other side of the fixed support (8).