A vacuum sampling box

Abstract

This utility model provides a vacuum sampling bag, including a box body with a partition dividing the box body into a sampling chamber and a vacuum chamber for temperature isolation; a sampling bag is placed in the sampling chamber, and a vacuum pump is placed in the vacuum chamber; a cooling plate is embedded in the bottom of the partition; a box cover is sealed to the top of the box body and has an observation component on it, which can observe the condition of the sampling bag and prevent the gas from being affected by strong light, thus preventing inaccurate final data analysis; a control panel is located on the outside of the box body and is electrically connected to the vacuum pump; wherein, the box body has an air inlet and an air outlet, the air inlet is connected to the sampling chamber, and the air outlet is connected to the vacuum chamber; the sampling bag is connected to the air inlet through a first hose, and the vacuum pump is connected to the air outlet through a second hose; the partition has a vacuum hole, and the vacuum pump is connected to the vacuum hole through a third hose; when the vacuum pump operates and the ambient temperature rises significantly, the cooling plate can be used to cool it down, avoiding the high temperature from affecting the preservation of the gas sample.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring technology, and in particular to a vacuum sampling box. Background Technology

[0002] Outdoor air can be sampled using direct sampling and concentrated sampling methods. Direct sampling involves collecting air samples directly in a suitable air collector and then bringing them back to the laboratory for analysis. The results obtained by direct sampling can represent the instantaneous or average concentration of air within a short period of time, and can be further divided into syringe sampling, plastic bag sampling, displacement sampling, and vacuum sampling methods.

[0003] Currently, vacuum sampling methods passively extract pollutant exhaust gas or ambient air into a gas bag inside the vacuum chamber using a vacuum sampling box. Compared to traditional air samplers, the sample enters the gas bag directly without passing through a sampling pump, resulting in no contamination or loss of the sample. This leads to higher sampling efficiency and quality, and offers advantages such as simple operation, large sampling flow rate, and good sealing performance. However, vacuum sampling boxes typically require an external pump for use. This makes them inconvenient to carry, requiring both the sampling box and the pump. To address this, vacuum sampling boxes with built-in pumps have been developed. However, these boxes generate heat when the pump is operating, affecting the temperature environment inside the chamber and impacting the preservation of the gas in the sampling bag, potentially leading to inaccurate data analysis.

[0004] Therefore, it is necessary to propose a vacuum collection chamber that facilitates the preservation of gas samples to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a urinary incontinence rehabilitation training device to solve the problem mentioned in the background art that the existing pump-built vacuum collection box generates heat when the pump is working, which affects the preservation of gas in the collection bag due to the temperature environment inside the box, thus leading to inaccurate final data analysis.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A vacuum sampling box, comprising:

[0008] The box body has an internal partition that divides the interior of the box body into a sampling chamber and an air extraction chamber. The sampling chamber contains a sampling bag, and the air extraction chamber contains an air extraction pump.

[0009] A cooling plate is embedded in the bottom of the partition plate;

[0010] The lid is sealed to the top of the box body and is equipped with an observation component.

[0011] The control panel is located on the outside of the enclosure and is electrically connected to the air pump.

[0012] in,

[0013] The housing is provided with an air inlet and an air outlet. The air inlet is connected to the sampling chamber, and the air outlet is connected to the suction chamber.

[0014] The sampling bag is connected to the air inlet via a first hose, and the air pump is connected to the air outlet via a second hose.

[0015] The partition is provided with an air extraction hole, and the air pump is connected to the air extraction hole through a third flexible hose.

[0016] Preferably, the observation component includes a viewing window and a light-shielding cover, the light-shielding cover being disposed above the viewing window.

[0017] Preferably, the lid has a groove, the viewing window is embedded in the groove, and the light-shielding cover can be placed over the groove.

[0018] Preferably, the light-shielding cover is provided with an arc-shaped opening groove.

[0019] Preferably, a control valve is provided at the interface between the sampling bag and the first hose, and a flow meter is provided on the third hose.

[0020] Preferably, it also includes a controller, which is located in the air extraction chamber and is electrically connected to the cooling plate, control panel, flow meter and control valve respectively.

[0021] Preferably, a temperature sensor connected to the inside of the sampling chamber is provided on the outer wall of the housing, and the temperature sensor is connected to the controller.

[0022] Preferably, a pressure gauge connected to the inside of the sampling chamber is also provided on the outer wall of the box.

[0023] Preferably, the inner wall of the box and the inner side of the box cover are provided with heat insulation layers.

[0024] Preferably, the lid of the box is rotatably connected to an arc-shaped handle.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] 1. The chamber is divided into a sampling chamber and an air extraction chamber, which are used to place the sampling bag and the air extraction pump respectively for temperature isolation. When the heat generated by the air extraction pump is low, the partition can prevent the sampling bag from being affected by the temperature environment. A cooling plate is provided at the bottom of the partition. When the heat generated by the air extraction pump is high, the cooling plate can be used to cool down the bag and prevent the rapid temperature transfer in the small environment from affecting the preservation of the gas in the sampling bag.

[0027] Second, by observing the components, a light-shielding cover is designed on the viewing window. When the sampled gas is a photosensitive gas, the light-shielding cover can be closed. The viewing window, together with the light-shielding cover, can not only observe the condition of the sampling bag, but also prevent the gas from being affected by strong light, which would lead to inaccurate final data analysis. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the internal structure of an embodiment of the present utility model;

[0030] Figure 2 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0031] Figure 3 This is a bottom view of the partition in an embodiment of the present utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the box cover in an embodiment of the present utility model.

[0033] Figure label:

[0034] 1. Box body; 11. Partition; 111. Exhaust port; 12. Sampling chamber; 121. Air inlet; 13. Exhaust chamber; 131. Air outlet;

[0035] 2. Sampling bag; 21. First tubing; 211. Control valve;

[0036] 3. Air pump; 31. Third hose; 311. Flow meter;

[0037] 4. Cooling plate;

[0038] 5. Case lid; 51. Observation assembly; 511. Viewing window; 512. Light shield; 5121. Arc-shaped opening groove; 52. Groove; 53. Arc-shaped handle;

[0039] 6. Control Panel;

[0040] 7. Controller;

[0041] 8. Temperature sensor;

[0042] 9. Pressure gauge. Detailed Implementation

[0043] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0044] In the description of this utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0048] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0049] like Figures 1-4 As shown, this embodiment of the present invention provides a vacuum sampling box, comprising:

[0050] The box 1 has a partition 11 inside, which divides the interior of the box 1 into a sampling chamber 12 and an air extraction chamber 13 from top to bottom. The sampling chamber 12 is equipped with a sampling bag 2, and the air extraction chamber 13 is equipped with an air extraction pump 3.

[0051] Cooling plate 4 is embedded in the bottom of partition plate 11;

[0052] The lid 5 is sealed to the top of the box body 1, and an observation component 51 is provided on it;

[0053] Control panel 6 is located on the outside of housing 1 and is electrically connected to air pump 3.

[0054] in,

[0055] The housing 1 is provided with an air inlet 121 and an air outlet 131. The air inlet 121 is connected to the sampling chamber 12, and the air outlet 131 is connected to the suction chamber 13.

[0056] The sampling bag 2 is connected to the air inlet 121 through the first hose 21, and the air pump 3 is connected to the air outlet 131 through the second hose.

[0057] The partition 11 is provided with an air extraction hole 111, and the air pump 3 is connected to the air extraction hole 111 through the third hose 31.

[0058] When in use, the air pump 3 is started through the control panel 6. The air pump 3 is connected to the air extraction port 111 through the third hose 31 to extract air from the sampling chamber 12 to make the sampling chamber 12 reach a negative pressure state. The air outside the box 1 enters the sampling bag 2 through the first hose 21 to realize gas sampling.

[0059] To prevent the sampling bag 2 from bursting due to the pressure difference between the inside and outside of the bag, the volume of the sampled gas should not exceed 80% of the volume of the sampling bag 2.

[0060] It should be noted that gas sampling requires aging the inner surface of the sampling bag 2 with sample gas to reduce sample loss interference caused by adsorption on the inner surface of the sampling bag 2. In this embodiment, the air pump 3 is controlled by the control panel 6 to repeatedly pump and exhaust gas 3 times to fully wash the inner surface of the sampling bag 2 with sample gas, completely remove impurity gas in the sampling bag 2, reduce subsequent measurement errors, and ensure that the concentration level of the sample can be accurately reflected.

[0061] When the heat generated by the vacuum pump 3 is low, the sampling bag 2 can be prevented from being affected by the temperature environment by the partition 11; when the vacuum pump 3 operates for a long time and causes the ambient temperature to rise significantly, the cooling plate 4 can be activated to cool down, so as to avoid the rapid temperature transfer in the small environment from affecting the preservation of gas in the sampling bag 2.

[0062] Specifically, the observation component 51 includes a viewing window 511 and a light-shielding cover 512, which is located above the viewing window 511.

[0063] More specifically, the lid 5 has a groove 52, the viewing window 511 is embedded in the groove 52, and the light shield 512 can be closed on the groove 52.

[0064] A light-shielding cover 512 is designed on the viewing window 511. When the sampled gas is a light-sensitive gas and a light-proof sampling bag 2 is not used, the light-shielding cover can be closed. By using the viewing window 511 and the light-shielding cover 512 together, the condition of the sampling bag 2 can be observed while preventing the gas from being affected by strong light, which would lead to inaccurate final data analysis.

[0065] To facilitate the opening of the light-shielding cover 512, an arc-shaped opening groove 5121 is provided on the light-shielding cover 512.

[0066] Furthermore, a control valve 211 is provided at the interface between the sampling bag 2 and the first hose 21 to control the entry and exit of the sample gas; a flow meter 311 is provided on the third hose 31 to control the sampling flow rate and ensure that the sampling speed is continuous and uniform.

[0067] To facilitate operator control and improve the automation of the vacuum sampling box, a controller 7 is also included, located in the suction chamber 13, and electrically connected to the cooling plate 4, control panel 6, flow meter 311 and control valve 211 respectively.

[0068] Furthermore, a temperature sensor 8 is provided on the outer wall of the housing 1, which is connected to the inside of the sampling chamber 12. The temperature sensor 8 is connected to the controller 7.

[0069] When the temperature sensor 8 detects that the temperature in the sampling chamber 12 is higher than the preset temperature, the controller 7 controls the cooling plate 4 to be turned on to achieve cooling.

[0070] Furthermore, a pressure gauge 9 connected to the inside of the sampling chamber 12 is also provided on the outer wall of the housing 1 to display the pressure value inside the sampling chamber 12.

[0071] To prevent high temperatures from affecting the temperature inside the chamber and thus the preservation of the sample gas in the sampling bag 2, heat insulation layers are provided on the inner wall of the chamber 1 and the inner side of the lid 5.

[0072] In addition, an arc-shaped handle 53 is rotatably connected to the lid 5 so that the operator can carry it.

[0073] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vacuum sampling enclosure, characterized by, include: The box (1) is provided with a partition (11) inside, which divides the interior of the box (1) into a sampling chamber (12) and an air extraction chamber (13). The sampling chamber (12) is provided with a sampling bag (2), and the air extraction chamber (13) is provided with an air extraction pump (3). Cooling plate (4) is embedded in the bottom of the partition plate (11); The lid (5) is sealed to the top of the box body (1) and is provided with an observation component (51). The control panel (6) is located on the outside of the housing (1) and is electrically connected to the air pump (3); in, The housing (1) is provided with an air inlet (121) and an air outlet (131). The air inlet (121) is connected to the sampling chamber (12), and the air outlet (131) is connected to the suction chamber (13). The sampling bag (2) is connected to the air inlet (121) through the first hose (21), and the air pump (3) is connected to the air outlet (131) through the second hose; The partition (11) is provided with an air extraction hole (111), and the air pump (3) is connected to the air extraction hole (111) through a third hose (31).

2. The vacuum sampling enclosure of claim 1, wherein: The observation component (51) includes a viewing window (511) and a light shield (512), the light shield (512) being disposed above the viewing window (511).

3. The vacuum sampling enclosure of claim 2, wherein: The box cover (5) has a groove (52) and the viewing window (511) is embedded in the groove (52). The light-shielding cover (512) can cover the groove (52).

4. The vacuum sampling enclosure of claim 3, wherein: The light-shielding cover (512) is provided with an arc-shaped opening groove (5121).

5. The vacuum sampling enclosure of claim 1, wherein: A control valve (211) is provided at the interface between the sampling bag (2) and the first hose (21), and a flow meter (311) is provided on the third hose (31).

6. The vacuum sampling box of claim 5, wherein, It also includes a controller (7), which is located in the air extraction chamber (13) and is electrically connected to the cooling plate (4), control panel (6), flow meter (311) and control valve (211), respectively.

7. The vacuum sampling enclosure of claim 6, wherein: A temperature sensor (8) is provided on the outer wall of the housing (1) and is connected to the inside of the sampling chamber (12). The temperature sensor (8) is connected to the controller (7).

8. The vacuum sampling enclosure of claim 1, wherein: A pressure gauge (9) connected to the inside of the sampling chamber (12) is also provided on the outer wall of the box (1).

9. The vacuum sampling enclosure of claim 1, wherein: The inner wall of the box (1) and the inner side of the box cover (5) are both provided with heat insulation layers.

10. The vacuum sampling box according to claim 1, characterized in that: An arc-shaped handle (53) is rotatably connected to the lid (5).

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