Sampling device and use method

Abstract

The embodiment of the invention discloses a sampling device and a use method, and belongs to the technical field of sampling devices.The sampling device is provided with a first box body, the first box body can contain a solvent, a first pump body can extract the solvent in the first box body, and a spraying part can spray the solvent extracted by the first pump body to the surface of an object; a first pump body is connected with a first box body to wash the surface of an object and dissolve a to-be-detected substance attached to the surface of the object to form a solution, a second pump body is connected with a second box body, a sampling piece is connected with the second box body, and the second pump body can form negative pressure in the second box body, so that the second box body sucks the solution to the inner side of the second box body through the sampling piece to complete sampling operation. The solvent can dissolve the to-be-detected substance in a short time, the sampling time is short, the sampling efficiency is high, the sampling of the to-be-detected substances on the surfaces of various objects can be realized, the application scene is wide, the formed solution is prevented from polluting the spraying part, and the accuracy of the subsequent detection result is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of sampling devices, and in particular to a sampling device and a method of use. Background Art

[0002] There are few sampling schemes for pollutants on the surfaces of objects such as vehicles, floors, and walls, and the sampling methods are single. The commonly used sampling methods are sampling brush wiping sampling or cotton ball wiping sampling. The sampling speed is slow and the sampling effect is poor. The sampling brush and sampling cotton ball may also adsorb the substances to be tested, affecting the test results. Summary of the invention

[0003] The embodiments of the present application provide a sampling device and a method of use, which can solve the problems of a single sampling method for solid surface pollutants, slow sampling speed, and poor sampling effect.

[0004] According to a first aspect of an embodiment of the present application, there is provided a sampling device for collecting a substance to be tested on the surface of an object, the sampling device comprising: a first box, the interior of which can contain a solvent, the solvent being capable of dissolving the substance to be tested; a first pump, disposed at one side of the first box, the first pump connected to the first box, the first pump capable of extracting the solvent in the first box; a spraying member, comprising a liquid inlet and a liquid outlet, the liquid inlet being connected to the first pump, the liquid outlet facing the surface of the object, the spraying member capable of spraying the solvent extracted by the first pump onto the surface of the object through the liquid outlet to rinse the surface of the object to form a solution; a second box, spaced apart from the first box; a second pump, disposed at one side of the second box, the second pump connected to the second box; a sampling member, spaced apart from the spraying member, the sampling member comprising a liquid suction end and a liquid infusion end, the liquid suction end facing the surface of the object, the liquid infusion end connected to the second box, the second pump capable of forming a negative pressure inside the second box, so that the second box sucks the solution into the inner side of the second box through the sampling member.

[0005] Optionally, the first box body has a height direction, and the first box body includes a bottom wall and a top wall arranged opposite to each other along the height direction; the first box body includes a first connecting tube, the first connecting tube is inserted into the top wall, the first connecting tube includes a first end and a second end arranged opposite to each other, the first end is located on the inner side of the first box body, the first end is adjacent to the bottom wall, the second end is located on the outer side of the first box body and is connected to the first pump body, and the first pump body can extract the solvent in the first box body through the first connecting tube; there is an angle α between the bottom wall and the horizontal plane, satisfying: 0°≤α≤90°; the first end is provided with a counterweight portion, so that when the angle α is any value, the first end can be adjacent to the bottom wall.

[0006] Optionally, the sampling device also includes a support member, a second connecting tube and a third connecting tube; the support member includes a supporting portion and a connecting portion, the first box body is arranged on the supporting portion, the connecting portion is arranged on a side of the supporting portion facing the first box body, a cavity is provided inside the connecting portion, a partition is provided inside the cavity, and the partition divides the cavity into a first compartment and a second compartment arranged at intervals; the spray member is inserted in the supporting portion, and the liquid inlet end of the spray member is connected to the first compartment, the sampling member is inserted in the supporting portion, and the infusion end of the sampling member is connected to the second compartment; one end of the second connecting tube is connected to the first pump body, and the other end is connected to the connecting portion, and the second connecting tube is connected to the first compartment; one end of the third connecting tube is connected to the second box body, and the other end is connected to the connecting portion, and the third connecting tube is connected to the second compartment.

[0007] Optionally, the sampling device also includes a cover shell, which is arranged on the side of the support portion facing away from the first box body, and a accommodating cavity is arranged inside the cover shell, and the cover shell includes a first opening and a second opening arranged opposite to each other, and the first opening and the second opening are respectively connected to the accommodating cavity; the end of the cover shell with the first opening is connected to the support portion, the spraying part and the sampling part are respectively inserted in the first opening, and the liquid outlet end and the liquid suction end are located on the inner side of the accommodating cavity; the cover shell can be covered on the surface of the object through the end with the second opening.

[0008] Optionally, the sampling device also includes a sampling tank, which is arranged between the second box and the support part, and the sampling tank is detachably connected to the second box, and the sampling tank is communicated with the second box; the solution transported to the second box through the third connecting pipe can flow into the sampling tank.

[0009] Optionally, the third connecting pipe is connected to the second housing through a flow path block, and the flow path block is L-shaped, so that the solution entering the second housing can flow into the sampling tank by its own weight.

[0010] Optionally, the second box body includes an upper box body and a lower box body, and the upper box body and the lower box body are connected in sequence to form the second box body; the second pump body is arranged at one end of the upper box body away from the lower box body; the sampling tank is connected to the lower box body, and a one-way valve is provided at the connection between the sampling tank and the lower box body.

[0011] Optionally, the sampling device also includes a control component, and the first pump body and the second pump body are respectively communicatively connected to the control component; the control component can control the first pump body to spray the extracted solvent onto the surface of the object through the liquid outlet to form a solution, and can control the second pump body to suck the formed solution into the second box through the sampling component after the spraying is completed.

[0012] Optionally, the sampling device also includes a bracket and a handle, the first box body, the second pump body, the second box body and the second pump body are respectively arranged on the same side of the bracket, and the first box body, the second pump body, the second box body and the second pump body are respectively connected to the bracket; the handle is arranged on the other side of the bracket.

[0013] A second aspect of the present application provides a method for using the sampling device as described above, the method comprising the following steps:

[0014] The cover is placed on the surface of the object, and the liquid outlet end of the spraying part is directed toward the object;

[0015] Flushing process:

[0016] The first pump body is started to extract the solvent in the first box body through the first pump body, and the first pump body delivers the extracted solvent to the spraying member, and the solvent is sprayed onto the surface of the object through the spraying member to rinse the surface of the object to form a solution;

[0017] Sampling process:

[0018] After flushing is completed, the second pump body is started, and the second pump body forms a negative pressure inside the second box body, so that the second box body sucks the formed solution into the inside of the second box body through the sampling piece, and the solution entering the inside of the second box body can flow into the sampling tank by its own weight to complete the sampling.

[0019] Optionally, the flushing process is completed within 10s to 20s; the sampling process is completed within 40s to 50s.

[0020] The beneficial effects of the present application are to provide a sampling device and a method for using the sampling device, wherein the sampling device is provided with a first box body, the first box body can contain a solvent, the solvent can dissolve the substance to be tested on the surface of an object to form a solution, a first pump body and a spraying member are provided, the first pump body is connected to the first box body, the spraying member is connected to the first pump body, the first pump body can extract the solvent in the first box body, the spraying member can spray the solvent extracted by the first pump body on the surface of the object to rinse the surface of the object and dissolve the substance to be tested attached to the surface of the object to form a solution, and a second box body is provided, the second pump body is connected to the second box body, the sampling member is connected to the second box body, the second pump body can form a negative pressure inside the second box body, so that the second box body passes through the second box body. The sampling piece sucks the solution to the inside of the second box to complete the sampling operation. Through the principle of similarity dissolves like, a solvent is used to dissolve the substance to be tested attached to the surface of the sampling object. The solvent can dissolve the substance to be tested in a short time. The solution formed by the suction of the sampling piece is used to sample the substance to be tested. The sampling time is short and the sampling efficiency is high. The sampling of substances to be tested on the surfaces of various objects can be achieved. The application scenarios are wide, and the formed solution can be prevented from contaminating the spray piece and from being mixed with other impurities in the solution to affect the test results. The accuracy of subsequent test results is ensured. Moreover, the spray piece sprays the solvent to rinse the surface of the object. Combined with the process of the solution formed by the suction of the sampling piece, the surface of the object can be cleaned to increase the service life of the object. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 is a schematic structural diagram of a sampling device provided in an embodiment of the present application from a first angle;

[0023] Figure 2 is a schematic structural diagram of a sampling device provided in an embodiment of the present application from a second angle;

[0024] Figure 3 yes Figure 2 AA section view;

[0025] Figure 4 is a schematic structural diagram of the sampling device provided in an embodiment of the present application from a third angle;

[0026] Figure 5 is a schematic structural diagram of the first box in the sampling device provided in an embodiment of the present application;

[0027] Figure 6 yes Figure 5 BB section view;

[0028] Figure 7 is a schematic structural diagram of a first angle of a support member in a sampling device provided in an embodiment of the present application;

[0029] Figure 8 is a schematic structural diagram of a second angle of a support member in a sampling device provided in an embodiment of the present application;

[0030] Fig. 9 yes Figure 7 CC section view.

[0031] Description of reference numerals:

[0032] 1. Sampling device;

[0033] 10. first box body, 101. bottom wall, 102. top wall, 11. first connecting pipe, 111. first end, 112. second end, 113. counterweight;

[0034] 20. first pump body, 21. second connecting pipe;

[0035] 30, spraying part, 31, liquid inlet end, 32, liquid outlet end;

[0036] 40. second box, 401. upper box, 402. lower box, 41. third connecting pipe, 42. flow path block;

[0037] 50. Second pump body;

[0038] 60, sampling piece, 61, liquid aspiration end, 62, liquid infusion end;

[0039] 70. support member, 71. support portion, 72. connection portion, 720. cavity, 721. first compartment, 722. second compartment, 73. partition portion, 74. first protrusion, 740. first plug hole, 75. second protrusion, 750. second plug hole, 76. third protrusion, 760. third plug hole, 77. fourth protrusion, 770. fourth plug hole;

[0040] 80. cover shell, 801. accommodating chamber, 81. first opening, 82. second opening, 83. sealing ring;

[0041] 90. Sampling can;

[0042] 100. Control parts;

[0043] 110. Bracket;

[0044] 120. Handle;

[0045] 130. Power supply;

[0046] 140, shield;

[0047] X, length direction, Y, width direction, Z, height direction. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0049] In some embodiments of the present application, a sampling device 1 is provided, referring to Figure 1 to Figure 6 The sampling device 1 includes: a first box body 10, a first pump body 20, a spraying part 30, a second box body 40, a second pump body 50 and a sampling part 60. The sampling device 1 is used to collect the substances to be tested on the surface of the object. The object includes solid surfaces such as the ground, the wall, and the surface of the vehicle. The substances to be tested are pollutants attached to the above solid surfaces. In other words, the sampling device 1 provided in the embodiment of the present application is used to sample pollutants attached to the solid surface. Among them, the substances to be tested can be pollutants such as pesticide residues and volatile organic compounds (VOCs).

[0050] Reference Figure 1 to Figure 6 The first box body 10 has a length direction X, a width direction Y and a height direction Z which are orthogonal to each other. The first box body 10 can contain a solvent inside, and the solvent can dissolve the substance to be tested on the surface of the object. According to the principle of similar dissolves, a substance with the same properties as the pollutant is used as the solvent.

[0051] Reference Figure 1 to Figure 4 The first pump body 20 is arranged on one side of the first box body 10, and the first pump body 20 is connected to the first box body 10. The first pump body 20 can extract the solvent in the first box body 10. Specifically, the first pump body 20 is arranged on one side of the first box body 10 along the height direction Z. The first pump body 20 is connected to the inner side of the first box body 10 through a pipeline, and the first pump body 20 can extract the solvent contained in the first box body 10.

[0052] Reference Figure 4The spraying member 30 includes a liquid inlet end 31 and a liquid outlet end 32, wherein the liquid inlet end 31 is connected to the first pump body 20, and the liquid outlet end 32 faces the surface of the object. Figure 4 In the embodiment shown, the spraying member 30 is disposed on a side of the first box body 10 away from the first pump body 20 along the height direction Z, referring to Figure 1 and Figure 2 The sampling device 1 also includes a second connecting pipe 21, and the liquid inlet end 31 of the spraying member 30 is connected to the first pump body 20 through the second connecting pipe 21. Specifically, one end of the second connecting pipe 21 is connected to the first pump body 20, and the other end is connected to the liquid inlet end 31 of the spraying member 30. The spraying member 30 can spray the solvent extracted by the first pump body 20 onto the surface of the object through the liquid outlet end 32 to rinse the surface of the object to form a solution, that is, the first pump body 20 transports the solvent extracted from the first box body 10 to the spraying member 30 through the second connecting pipe 21, and sprays it on the surface of the sampled object through the liquid outlet end 32 of the spraying member 30 to form a rinse of the object surface, and the sprayed solvent can dissolve the substance to be tested attached to the surface of the object to form a solution.

[0053] Reference Figure 1 to Figure 4 The second box body 40 is spaced apart from the first box body 10 . Specifically, the second box body 40 is disposed on a side of the first pump body 20 away from the first box body 10 along the height direction Z.

[0054] Reference Figure 1 to Figure 4 The second pump body 50 is arranged on one side of the second box body 40. Specifically, the second pump body 50 is arranged on the side of the second box body 40 away from the first box body 10 along the height direction Z. The second pump body 50 is connected to the second box body 40, and the second pump body 50 can form a negative pressure inside the second box body 40.

[0055] Reference Figure 3 and Figure 4 The sampling member 60 is spaced apart from the spraying member 30, and the sampling member 60 includes a liquid suction end 61 and a liquid infusion end 62. The liquid suction end 61 faces the surface of the object, and the liquid infusion end 62 is connected to the second box 40. The second pump body 50 can form a negative pressure inside the second box 40, so that the second box 40 sucks the solution into the second box 40 through the sampling member 60. Figure 4 In the embodiment shown, the sampling member 60 and the spraying member 30 are spaced apart along the length direction X of the first box body 10. Figure 2 to Figure 4The sampling device 1 also includes a third connecting tube 41, and the infusion end 62 of the sampling member 60 is connected to the second box 40 through the third connecting tube 41. Specifically, one end of the third connecting tube 41 is connected to the infusion end 62 of the sampling member 60, and the other end is connected to the second box 40 and communicates with the inner side of the second box 40. The spraying member 30 sprays a solvent onto the surface of the object to dissolve the substance to be tested attached to the surface of the object to form a solution. Under the action of the negative pressure inside the second box 40, the second box 40 sucks the formed solution through the sampling member 60, and transports the sucked solution to the inner side of the second box 40 through the third connecting tube 41 to form a storage for the solution.

[0056] Due to the existence of air pollution and chemical pollution, a certain amount of pollutants, such as pesticide residues, volatile organic compounds (VOCs, Volatile Organic Compounds) and other pollutants, are usually attached to the surfaces of objects such as vehicles, floors, and walls. The attached pollutants can cause damage to the objects and people around the objects. Therefore, it is necessary to sample and detect the pollutants in a timely manner so as to remove them in time. For the sampling of pollutants on the surfaces of objects such as vehicles, floors, and walls, the commonly used sampling method is to wipe the surface of the object with a sampling brush to complete the sampling, or to wipe the surface of the object with a cotton ball to complete the sampling. This wiping sampling method is relatively simple, and the sampling speed is slow, the sampling effect is poor, and the sampling volume is small each time, which affects the accuracy of the test results. After the sampling is completed, there are still a lot of substances to be tested remaining on the surface of the object, which affects the service life of the object. In addition, the sampling brush and the sampling cotton ball will adsorb the substances to be tested, resulting in the introduction of other impurities into the substances to be tested, affecting the test results.

[0057] The sampling device 1 provided in the embodiment of the present application is provided with a first box body 10, the first box body 10 can contain a solvent inside, the solvent can dissolve the substance to be tested on the surface of the object to form a solution, and a first pump body 20 and a spraying member 30 are provided, the first pump body 20 is connected to the first box body 10, the spraying member 30 is connected to the first pump body 20, the first pump body 20 can extract the solvent in the first box body 10, the spraying member 30 can spray the solvent extracted by the first pump body 20 on the surface of the object to rinse the surface of the object and dissolve the substance to be tested attached to the surface of the object to form a solution, and a second box body 40 is provided, the second pump body 50 is connected to the second box body 40, the sampling member 60 is connected to the second box body 40, the second pump body 50 can form a negative pressure inside the second box body 40, so that the second box body 40 sucks the solution to the inside of the second box body 40 through the sampling member 60 to complete the sampling operation, through Based on the principle of like favors like, the solvent is sprayed onto the surface of the object through the spraying part 30, and the solvent is used to dissolve the substance to be tested attached to the surface of the sampling object. The solvent can dissolve the substance to be tested in a short time, and the solution formed by suction is sampled by the sampling part 60. The sampling time is short and the sampling efficiency is high. The substance to be tested on the surfaces of various objects can be sampled, and the application scenarios are wide. The formed solution can avoid contaminating the spraying part, and can avoid other impurities in the solution affecting the test results. The sampling volume is large, thereby ensuring the accuracy of subsequent test results. The spraying part 30 sprays the solvent to rinse the surface of the object, and the sampling part 60 sucks the formed solution to clean the surface of the object, thereby improving the service life of the object. Compared with the existing wiping sampling method, it can effectively remove pollutants attached to the surface of the object and reduce the residual pollutants on the surface of the object.

[0058] In some implementations, the third connecting tube 41 is connected to the second box body 40 through the second pump body 50, that is, one end of the second pump body 50 is connected to the sampling piece 60 through the third connecting tube 41, and the other end of the second pump body 50 is connected to the second box body 40. The second pump body 50 sucks the solution into the second box body 40 through the third connecting tube 41 and the sampling piece 60, as long as the purpose of sucking the solution into the inner side of the second box body 40 is achieved.

[0059] In some embodiments, reference Figure 3 to Figure 5The first box body 10 includes a bottom wall 101 and a top wall 102 that are relatively arranged along the height direction Z. The first box body 10 includes a first connecting pipe 11 that is inserted into the top wall 102. The first connecting pipe 11 includes a first end 111 and a second end 112 that are relatively arranged. The first end 111 is located inside the first box body 10, the first end 111 is adjacent to the bottom wall 101, and the second end 112 is located outside the first box body 10 and connected to the first pump body 20. The first pump body 20 can extract the solvent in the first box body 10 through the first connecting pipe 11. There is an angle α (not shown in the figure) between the bottom wall 101 and the horizontal plane, which satisfies: 0°≤α≤90°. The first end 111 is provided with a counterweight 113, so that when the angle α is any value, the first end 111 can be adjacent to the bottom wall 101. The setting of the counterweight portion 113 can increase the weight of the first end 111, so that when the sampling device 1 is in an upright, inclined or horizontal state, causing the first box body 10 to be in an upright, inclined or horizontal state, that is, when the angle α between the bottom wall 101 of the first box body 10 and the horizontal plane is different values, the first end 111 can be close to the bottom wall 101, and then when the inner side of the first box body 10 is filled with a solvent, the first end 111 can extend into the bottom of the inner side of the solvent under the action of the counterweight portion 113, ensuring the stable extraction of the solvent by the first pump body 20 through the first connecting tube 11, ensuring the amount of extracted solvent, and then ensuring the amount of dissolved test substances to form a solution, and ensuring the accuracy of subsequent test results.

[0060] Among them, when the angle α between the bottom wall 101 and the horizontal plane is 0°, the sampling device 1 is in an upright state and the first box body 10 is in an upright state; when the angle α between the bottom wall 101 and the horizontal plane is 90°, the sampling device 1 is in a flat state and the first box body 10 is in a flat state; when the angle α between the bottom wall 101 and the horizontal plane satisfies 0°<α<90°, the sampling device 1 is in an inclined state and the first box body 10 is in an inclined state, so that the sampling device 1 can be used for sampling the substance to be tested on the surface of objects at different angles.

[0061] In some embodiments, reference Figure 1 to Figure 4 as well as Figure 7 to Figure 9 The sampling device 1 further includes a support member 70, the support member 70 includes a support portion 71 and a connecting portion 72, referring to Figure 1 to Figure 4 The first box body 10 is arranged on the support portion 71, and the connecting portion 72 is arranged on the side of the support portion 71 facing the first box body 10. Specifically, the support portion 71 is arranged at one end of the first box body 10 away from the first pump body 20 along the height direction Z, and the support portion 71 forms a support for the first box body 10. The connecting portion 72 is protrudingly arranged on the side of the support portion 71 facing the first box body 10 along the height direction Z, and the connecting portion 72 is spaced apart from the first box body 10 along the width direction Y. Figure 7, a cavity 720 is provided inside the connection part 72, and a partition part 73 is provided inside the cavity 720. The partition part 73 divides the cavity 720 into a first compartment 721 and a second compartment 722 arranged at intervals. Specifically, the first compartment 721 and the second compartment 722 are arranged at intervals along the length direction X of the first box body 10, and the first compartment 721 and the second compartment 722 are independent and not connected to each other. Among them, the spraying member 30 is inserted into the support part 71, and the liquid inlet end 31 of the spraying member 30 is connected to the first compartment 721, one end of the second connecting pipe 21 is connected to the first pump body 20, and the other end is connected to the connection part 72, and the second connecting pipe 21 is connected to the first compartment 721, that is, the second connecting pipe 21 is connected to the liquid inlet end 31 of the spraying member 30 through the first compartment 721, and the solvent extracted by the first pump body 20 is transported to the spraying member 30 through the second connecting pipe 21 and the first compartment 721. The sampling member 60 is inserted into the support portion 71, and the infusion end 62 of the sampling member 60 is connected to the second compartment 722. One end of the third connecting tube 41 is connected to the second box body 40, and the other end is connected to the connecting portion 72, and the third connecting tube 41 is connected to the second compartment 722, that is, the third connecting tube 41 is connected to the infusion end 62 of the sampling member 60 through the second compartment 722, and the second pump body 50 is under negative pressure inside the second box body 40. The second box body 40 extracts a solution formed by dissolving the substance to be tested through the third connecting tube 41, the second compartment 722 and the sampling member 60 that are connected in sequence. The design of the support member 70 can support the first box body 10 through the support portion 71 to ensure the stability of the first box body 10, and can also integrate the spraying member 30 and the sampling member 60, thereby improving the overall space utilization, improving the compactness of the overall structure of the sampling device 1, and thus improving the portability of the sampling device 1.

[0062] In some embodiments, reference Figure 7 to Figure 9 A first protrusion 74 and a second protrusion 75 are protruded from a side of the connection portion 72 away from the support portion 71 along the height direction Z. The first protrusion 74 and the second protrusion 75 are spaced apart along the length direction X of the first box body 10. A first plug hole 740 is provided on the first protrusion 74, and the first plug hole 740 is communicated with the first compartment 721. The second connecting tube 21 is inserted into the first plug hole 740 to ensure the connection stability between the second connecting tube 21 and the connection portion 72, and to ensure the stability of the solvent delivery. A second plug hole 750 is provided on the second protrusion 75, and the second plug hole 750 is communicated with the second compartment 722. The third connecting tube 41 is inserted into the second plug hole 750 to ensure the connection stability between the third connecting tube 41 and the connection portion 72, and to ensure the transmission stability of the solution sucked by the sampling member 60.

[0063] In some embodiments, reference Figure 8-Figure 9A third protrusion 76 and a fourth protrusion 77 are protrudingly provided on one side of the support portion 71 away from the connection portion 72 along the height direction Z. The third protrusion 76 and the fourth protrusion 77 are spaced apart along the length direction X of the first box body 10. A third plug hole 760 is provided on the third protrusion 76. The third plug hole 760 is communicated with the first compartment 721. The liquid inlet end 31 of the spray member 30 is inserted into the third plug hole 760 to ensure the assembly stability of the spray member 30. A fourth plug hole 770 is provided on the fourth protrusion 77. The infusion end 62 of the sampling member 60 is inserted into the fourth plug hole 770 to ensure the assembly stability of the sampling member 60.

[0064] In some embodiments, reference Figure 1 to Figure 4 The sampling device 1 also includes a cover shell 80, which is arranged on a side of the support portion 71 away from the first box body 10. Specifically, the cover shell 80 is arranged on a side of the support portion 71 away from the first box body 10 along the height direction Z. A accommodating chamber 801 is arranged inside the cover shell 80. The cover shell 80 includes a first opening 81 and a second opening 82 that are relatively arranged along the height direction Z. The first opening 81 and the second opening 82 are respectively connected to the accommodating chamber 801. One end of the cover shell 80 where the first opening 81 is opened is connected to the support portion 71. The spraying member 30 and the sampling member 60 are respectively inserted into the first opening 81. The liquid outlet end 32 of the spraying member 30 and the liquid suction end 61 of the sampling member 60 are located on the inner side of the accommodating chamber 801. The cover shell 80 can be covered on the surface of an object through one end where the second opening 82 is opened. The setting of the cover shell 80 can be fitted with the surface of the object to close the accommodating cavity 801, forming an enclosure for the spraying part 30 and the sampling part 60. When the spraying part 30 sprays the solvent to rinse the surface of the object, the solvent and the solution formed by the solvent dissolving the substance to be tested are prevented from splashing. In addition, the cover shell 80 cooperates with the object to form a closure for the accommodating cavity 801, which can ensure the stability of the internal pressure of the accommodating cavity 801, thereby ensuring the stability of the solution sucked by the sampling part 60, so that the sampling part 60 can suck enough solution in a short time, ensuring the smooth sampling, and then ensuring the accuracy of the subsequent test results.

[0065] In some embodiments, reference Figure 3 and Figure 4 A sealing ring 83 is provided at one end of the cover shell 80 where the second opening 82 is provided. The sealing ring 83 can ensure the sealing between the cover shell 80 and the surface of the object, thereby improving the sealing of the accommodating cavity 801 and ensuring the stability of the internal pressure of the accommodating cavity 801, thereby ensuring the stability of the solution sucked by the sampling piece 60, so that the sampling piece 60 can suck enough solution in a short time, ensuring the smooth sampling, and then ensuring the accuracy of the subsequent detection results.

[0066] In some embodiments, reference Figure 1 to Figure 4The sampling device 1 further includes a sampling tank 90, which is disposed between the second box 40 and the support portion 71. The sampling tank 90 is detachably connected to the second box 40, and the sampling tank 90 is in communication with the second box 40, so that the solution transported to the second box 40 through the third connecting pipe 41 can flow into the sampling tank 90. ​​The provision of the sampling tank 90 can form a timely collection of the solution in the second box 40, facilitate timely testing of the solution, ensure timeliness, and ensure the accuracy of the test results.

[0067] In some embodiments, reference Figure 2 to Figure 4 The sampling device 1 further includes a flow path block 42, through which the third connecting pipe 41 is connected to the second housing 40, and the shape of the flow path block 42 is L-shaped, so that the solution entering the second housing 40 can flow into the sampling tank 90 by its own weight. Specifically, one end of the flow path block 42 is connected to the second housing 40 and communicates with the inner side of the second housing 40, and the other end of the flow path block 42 is connected to the third connecting pipe 41, so that the third connecting pipe 41 is connected to the second housing 40 through the flow path block 42. The L-shaped structural design of the flow path block 42 can ensure the smoothness and stability of the solution entering the inner side of the second housing 40. Moreover, since the inner space of the second housing 40 is relatively large, after the solution enters the second housing 40, the space becomes larger and the pressure becomes lower. At this time, the gravity (i.e., the weight of the solution) on the solution is greater than the negative pressure generated by the second pump body 50 inside the second housing 40. The solution flows into the sampling tank 90 under the action of its own gravity and is stored, preventing the solution from being sucked into the second pump body 50.

[0068] In some embodiments, reference Figure 1 to Figure 4 The second box body 40 includes an upper box body 401 and a lower box body 402, and the upper box body 401 and the lower box body 402 are connected in sequence to form the second box body 40. Specifically, the upper box body 401 and the lower box body 402 are connected in sequence along the height direction Z of the first box body 10 to form the second box body 40. The second pump body 50 is arranged at one end of the upper box body 401 away from the lower box body 402 along the height direction Z. The sampling tank 90 is connected to one end of the lower box body 402 away from the upper box body 401. The flow path block 42 is connected to the lower box body 402. A one-way valve (not shown in the figure) is provided at the connection between the sampling tank 90 and the lower box body 402. The setting of the one-way valve can prevent the solution flowing into the sampling tank 90 from flowing back to the second box body 40 or even the second pump body 50 when the sampling device 1 is tilted, thereby ensuring the stability and smoothness of the sampling.

[0069] In some embodiments, the cross-sectional shape of the lower box body 402 is an inverted trapezoidal structure, thereby ensuring that the solution entering the second box body 40 can flow smoothly into the sampling tank 90 by its own weight.

[0070] In some embodiments, reference Figure 1 to Figure 4The sampling device 1 also includes a control part 100. The first pump body 20 and the second pump body 50 are respectively connected to the control part 100 for communication. The control part 100 can control the first pump body 20 to spray the extracted solvent onto the surface of the object through the liquid outlet end 32 of the spraying part 30 to form a solution, and can control the second pump body 50 to suck the formed solution into the second box body 40 through the sampling part 60 after the spraying is completed. Specifically, the control component 100 can control the first pump body 20 and the second pump body 50 to work successively, that is, the control component 100 first opens the first pump body 20 and closes the second pump body 50, controls the first pump body 20 to extract the solvent in the first box body 10 and sprays the solvent through the spray component 30 to rinse the substance to be tested on the surface of the object to form a solution, and then, the control component 100 closes the first pump body 20 and opens the second pump body 50, controls the second pump body 50 to form a negative pressure inside the second box body 40, so that the second box body 40 extracts the formed solution through the sampling component 60, thereby ensuring the automation and smoothness of the sampling process of the sampling device 1, so that the sampling device 1 can complete the sampling work in a short time and improve the sampling efficiency.

[0071] In some embodiments, the control component 100 is a printed circuit board.

[0072] In some embodiments, reference Figure 1 to Figure 4 The sampling device 1 further includes a bracket 110 and a handle 120. The first box 10, the first pump 20, the second box 40 and the second pump 50 are respectively arranged on the same side of the bracket 110. The first box 10, the first pump 20, the second box 40 and the second pump 50 are respectively connected to the bracket 110. The handle 120 is arranged on the other side of the bracket 110. The design of the bracket 110 can ensure the installation stability of the first box 10, the first pump 20, the second box 40 and the second pump 50, and the bracket 110 can cooperate with the connecting portion 72 of the support member 70 to form a limit for the first box 10 to prevent the first box 10 from falling off. The provision of the handle 120 can improve the portability of the sampling device 1 and expand the scope of use of the sampling device 1.

[0073] In some embodiments, reference Figure 2 and Figure 3 The sampling device 1 also includes a shield 140, which is connected to the end of the bracket 110 away from the first box body 10 along the height direction Z. The control component 100, the power supply 130, the second pump body 60 and at least a part of the second box body 40 are arranged in the shield 140. The shield 140 forms a protection for the control component 100, the power supply 130, the second pump body 60 and at least a part of the second box body 40. Specifically, the upper box body 401 in the second box body 40 is arranged in the shield 140, and the connection between the lower box body 402 and the sampling tank 90 is located on the outside of the shield 140 to ensure the convenience of connection between the lower box body 402 and the sampling tank 90.

[0074] In some embodiments of the present application, a method for using the sampling device 1 as described above is also provided, and the method for using includes the following steps:

[0075] S1. Place the cover 80 on the surface of an object, and direct the liquid outlet 32 ​​of the spraying member 30 toward the object;

[0076] S2. Flushing process:

[0077] The first pump body 20 is started by the control 100, and the solvent in the first box body 10 is extracted by the first pump body 20. The first pump body 20 delivers the extracted solvent to the spraying member 30, and the solvent is sprayed onto the surface of the object through the spraying member 30 to wash the surface of the object to form a solution;

[0078] S3. Sampling process:

[0079] After flushing is completed, the control component 100 starts the second pump body 50, and the second pump body 50 forms a negative pressure inside the second box body 40, so that the second box body 40 sucks the formed solution into the inside of the second box body 40 through the sampling component 60. The solution entering the inside of the second box body 40 can flow into the sampling tank 90 by its own weight to complete the sampling.

[0080] In some embodiments, the flushing process in step S2 is completed within 10s to 20s.

[0081] In some embodiments, the sampling process in step S3 is completed within 40s to 50s.

[0082] The following describes the method for using the sampling device 1 provided in the present application in conjunction with specific embodiments.

[0083] When the sampling device 1 is used for sampling, the cover 80 is placed on the surface of the object to be sampled;

[0084] Turn on the sampling device 1 and press the start button, and the sampling device 1 can automatically start sampling through the control unit 100.

[0085] Sampling is divided into a flushing process and a sampling process. The flushing process runs for 15 seconds. At this time, the control component 100 controls the first pump body 20 to start running (the second pump body 50 is in a closed state). The solvent is drawn out from the first box body 10, passes through the first pump body 20 and the second connecting pipe 21 to the liquid outlet end 32 of the spray component 30 and is sprayed onto the surface of the object to be sampled for flushing. During the flushing process, the solvent dissolves the substance to be tested on the surface of the object to form a solution.

[0086] After the flushing process is completed, the device will automatically run the sampling process. The sampling process runs for 45 seconds. At this time, the control component 100 controls the first pump body 20 to close and controls the second pump body 50 to start running. The second pump body 50 forms a negative pressure on the inner side of the second box body 40. Under the action of the negative pressure, the solution on the surface of the object to be sampled is sucked by the suction end 61 of the sampling component 60, and enters the second box body 40 through the third connecting pipe 41 and the flow path block 42. The lower box body 402 is connected to the third connecting pipe 41 through the flow path block 42. The collected solution can enter the second box body 40 through the flow path block 42. After the solution enters the second box body 40, the space becomes larger and the pressure becomes lower. At this time, the gravity on the solution is greater than the negative pressure generated by the second pump body 50. Under the action of gravity, the solution flows into the sampling tank 90 through the lower box body 402 and is stored to prevent the solution from being sucked into the second pump body 50.

[0087] The solution in the sampling tank 90 can be directly injected into the instrument for detection and analysis.

[0088] The above is a detailed introduction to a sampling device and a method of use provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A sampling device for collecting a substance to be tested on the surface of an object, characterized in that: The sampling device comprises: A first box (10) capable of containing a solvent, wherein the solvent is capable of dissolving the substance to be tested; A first pump body (20) is arranged on one side of the first box body (10), the first pump body (20) is connected to the first box body (10), and the first pump body (20) can extract the solvent in the first box body (10); a spraying member (30), comprising a liquid inlet end (31) and a liquid outlet end (32), wherein the liquid inlet end (31) is connected to the first pump body (20), and the liquid outlet end (32) faces the surface of the object, and the spraying member (30) can spray the solvent extracted by the first pump body (20) onto the surface of the object through the liquid outlet end (32) to rinse the surface of the object to form a solution; A second box (40) is spaced apart from the first box (10); A second pump body (50) is disposed on one side of the second box body (40), and the second pump body (50) is connected to the second box body (40); The sampling member (60) is spaced apart from the spraying member (30), and comprises a liquid suction end (61) and a liquid infusion end (62). The liquid suction end (61) faces the surface of the object, and the liquid infusion end (62) is connected to the second box (40). The second pump body (50) can form a negative pressure inside the second box (40), so that the second box (40) sucks the solution into the inner side of the second box (40) through the sampling member (60).

2. The sampling device according to claim 1, characterized in that: The first box body (10) has a height direction (Z), and the first box body (10) comprises a bottom wall (101) and a top wall (102) which are arranged opposite to each other along the height direction (Z); The first box (10) comprises a first connecting pipe (11), the first connecting pipe (11) is inserted into the top wall (102), the first connecting pipe (11) comprises a first end (111) and a second end (112) which are arranged opposite to each other, the first end (111) is located inside the first box (10), the first end (111) is adjacent to the bottom wall (101), the second end (112) is located outside the first box (10) and is connected to the first pump (20), and the first pump (20) can extract the solvent in the first box (10) through the first connecting pipe (11); There is an angle α between the bottom wall (101) and the horizontal plane, which satisfies: 0°≤α≤90°; The first end (111) is provided with a counterweight portion (113), so that when the angle α is at any value, the first end (111) can be adjacent to the bottom wall (101).

3. The sampling device according to claim 1, characterized in that: The sampling device further comprises a support member (70), a second connecting tube (21) and a third connecting tube (41); The support member (70) comprises a support portion (71) and a connection portion (72); the first box body (10) is arranged on the support portion (71); the connection portion (72) is arranged on a side of the support portion (71) facing the first box body (10); a cavity (720) is arranged inside the connection portion (72); a partition portion (73) is arranged inside the cavity (720); the partition portion (73) partitions the cavity (720) into a first compartment (721) and a second compartment (722) arranged at intervals; The spraying member (30) is inserted into the supporting portion (71), and the liquid inlet end (31) of the spraying member (30) is communicated with the first compartment (721); the sampling member (60) is inserted into the supporting portion (71), and the liquid infusion end (62) of the sampling member (60) is communicated with the second compartment (722); One end of the second connecting pipe (21) is connected to the first pump body (20), and the other end is connected to the connecting portion (72), and the second connecting pipe (21) is in communication with the first compartment (721); One end of the third connecting pipe (41) is connected to the second box body (40), and the other end is connected to the connecting portion (72), and the third connecting pipe (41) is in communication with the second compartment (722).

4. The sampling device according to claim 3, characterized in that: The sampling device further comprises a cover shell (80), the cover shell (80) being arranged on a side of the support portion (71) away from the first housing (10), the cover shell (80) being provided with a receiving chamber (801) inside, the cover shell (80) comprising a first opening (81) and a second opening (82) arranged opposite to each other, the first opening (81) and the second opening (82) being respectively connected to the receiving chamber (801); One end of the cover shell (80) opening the first opening (81) is connected to the support portion (71), the spraying member (30) and the sampling member (60) are respectively inserted into the first opening (81), and the liquid outlet end (32) and the liquid suction end (61) are located inside the accommodating cavity (801); The cover shell (80) can be covered on the surface of the object through one end having the second opening (82).

5. The sampling device according to claim 3, characterized in that: The sampling device further comprises a sampling tank (90), wherein the sampling tank (90) is arranged between the second box (40) and the support portion (71), the sampling tank (90) and the second box (40) are detachably connected, and the sampling tank (90) and the second box (40) are in communication; The solution transported into the second housing (40) through the third connecting pipe (41) can flow into the sampling tank (90).

6. The sampling device according to claim 5, characterized in that: The third connecting pipe (41) is connected to the second box (40) through a flow path block (42). The flow path block (42) is L-shaped, and the solution entering the second box (40) can flow into the sampling tank (90) by its own weight.

7. The sampling device according to claim 5, characterized in that: The second box (40) comprises an upper box (401) and a lower box (402), and the upper box (401) and the lower box (402) are connected in sequence to form the second box (40); The second pump body (50) is arranged at one end of the upper box body (401) away from the lower box body (402); The sampling tank (90) is connected to the lower box (402), and a one-way valve is provided at the connection between the sampling tank (90) and the lower box (402).

8. The sampling device according to claim 1, characterized in that: The sampling device further comprises a control member (100), and the first pump body (20) and the second pump body (50) are respectively connected to the control member (100) in communication; The control component (100) can control the first pump body (20) to spray the extracted solvent onto the surface of the object through the liquid outlet (32) to form a solution, and after the spraying is completed, can control the second pump body (50) to suck the formed solution into the second box (40) through the sampling component (60).

9. The sampling device according to claim 4, characterized in that: The sampling device further comprises a bracket (110) and a handle (120); the first box (10), the first pump (20), the second box (40) and the second pump (50) are respectively arranged on the same side of the bracket (110), and the first box (10), the first pump (20), the second box (40) and the second pump (50) are respectively connected to the bracket (110); The handle (120) is arranged on the other side of the bracket (110).

10. A method for using the sampling device according to any one of claims 1 to 9, characterized in that: The method of use comprises the following steps: The cover shell (80) is placed on the surface of an object, and the liquid outlet end (32) of the spraying member (30) is directed toward the object; Flushing process: The first pump body (20) is started to extract the solvent in the first box (10) through the first pump body (20), the first pump body (20) delivers the extracted solvent to the spraying member (30), and the solvent is sprayed onto the surface of the object through the spraying member (30) to rinse the surface of the object to form a solution; Sampling process: After flushing is completed, the second pump body (50) is started, and the second pump body (50) forms a negative pressure inside the second box body (40), so that the second box body (40) sucks the formed solution into the inside of the second box body (40) through the sampling piece (60). The solution entering the inside of the second box body (40) can flow into the sampling tank (90) by its own weight, thereby completing the sampling.

11. The method for using the sampling device according to claim 10, characterized in that: The flushing process is completed within 10s to 20s; The sampling process is completed within 40s to 50s.

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