Detection equipment for soil VOCs (Volatile Organic Compounds)

Abstract

The utility model provides detection equipment for soil VOCs, and relates to the technical field of VOCs detection, and the detection equipment comprises a first shell, a second shell, an insertion assembly, a VOCs detector, a vacuum pump and a battery piece. The first shell is provided with a battery cavity, a working cavity and an air inlet cavity, and the second shell comprises an air inlet pipe; the insertion assembly comprises a butt joint pipe, a connecting ring and a plurality of insertion cone structures, the butt joint pipe is connected with the air inlet pipe, the air inlet pipe is sleeved with the connecting ring, each insertion cone structure comprises an insertion piece, a first elastic piece and a first connecting piece, one end of each insertion piece is rotationally connected with the air inlet pipe, and the first elastic pieces are connected with the insertion pieces and the butt joint pipe; the first connecting piece is connected with the inserting piece and the connecting ring. The air inlet end of the vacuum pump communicates with the air inlet cavity, the air outlet end of the vacuum pump communicates with the VOCs detector, and the battery piece is electrically connected with the VOCs detector and the vacuum pump. The detection equipment for the VOCs in the soil, disclosed by the invention, can be used for directly and quickly detecting the VOCs in the soil.

Description

Technical Field

[0001] The present application relates to the technical field of VOCs detection, and in particular to a detection device for soil VOCs. Background Art

[0002] With the development of urban construction, my country's urbanization rate has been increasing year by year, and the garbage generated by urban residents has also increased year by year. At present, the main methods of dealing with urban garbage are incineration and landfill. Among them, for the landfill method of treating urban garbage, the monitoring of landfill sites generally includes VOCs (Volatile Organic Compounds) detection.

[0003] However, current VOCs gas detection devices generally need to collect and prepare soil samples from landfill sites separately before completing the detection work, and are unable to directly and quickly complete the detection of the soil at the landfill site. Utility Model Content

[0004] In order to solve the technical problems in the related art, the present application provides a soil VOCs detection device. Through the soil VOCs detection device of the present application, VOCs detection can be performed directly and quickly on the soil of the landfill site.

[0005] In order to achieve the above purpose, the technical solution adopted in this application is: a detection device for soil VOCs, comprising:

[0006] A first shell and a second shell connected to each other, wherein the interior of the first shell is divided into a battery chamber, a working chamber and an air intake chamber arranged in sequence from bottom to top, and the second shell includes an air intake pipe communicating with the air intake chamber;

[0007] An insertion assembly comprises a butt joint tube, a connecting ring and a plurality of insert cone structures, wherein one end of the butt joint tube is detachably connected to the intake pipe, the connecting ring is movably sleeved outside the intake pipe, the insert cone structure comprises an insert sheet, a first elastic member and a first connecting member, the insert sheets of the plurality of insert cone structures can be collectively enclosed into a hollow cone structure, one end of the insert sheet is rotatably connected to an end of the butt joint tube away from the intake pipe, one end of the first elastic member is connected to a side of the insert sheet corresponding to the inside of the hollow cone structure, the other end of the first elastic member is connected to the butt joint tube, one end of the first connecting member is connected to a side of the insert sheet corresponding to the outside of the hollow cone structure, and the other end of the first connecting member is detachably connected to the connecting ring;

[0008] A VOCs detector, a vacuum pump and a battery, wherein the VOCs detector and the vacuum pump are installed in the working chamber, the air inlet end of the vacuum pump is communicated with the air inlet chamber, the air outlet end of the vacuum pump is communicated with the VOCs detector, the battery is installed in the battery chamber, and the battery is electrically connected to the VOCs detector and the vacuum pump respectively;

[0009] Among them, the insertion component includes an insertion state and a vacuum state. In the insertion state, multiple insertion pieces of the insertion cone structure abut against each other and together form a hollow cone structure, and the first elastic member is in an original length state; in the vacuum state, multiple insertion pieces of the insertion cone structure are separated from each other, and the first elastic member is in a stretched state.

[0010] Optionally, an external thread is formed on the outer circumferential surface of one end of the air intake pipe away from the first shell, and an internal thread matching the external thread is formed on the inner circumferential surface of one end of the butt joint pipe close to the air intake pipe.

[0011] Optionally, the butt joint pipe comprises a first section and a second section which are coaxially connected, the outer diameter of the first section is the same as the outer diameter of the second section, the inner diameter of the first section is larger than the inner diameter of the second section, and the internal thread is formed on the first section;

[0012] The detection equipment for soil VOCs also includes a filter assembly, which includes a mounting ring and a first filter screen. The mounting ring is sleeved outside the first filter screen. The radial dimension of the mounting ring is less than or equal to the inner diameter of the first section, and the radial dimension of the mounting ring is greater than the inner diameter of the second section.

[0013] Optionally, the filter assembly further includes a second filter screen and a second connecting member, the first filter screen is connected to the second filter screen via the second connecting member, the second filter screen is parallel to the first filter screen, and the size of the second filter screen matches the inner diameter of the second section;

[0014] Wherein, the aperture of the second filter screen is larger than the aperture of the first filter screen.

[0015] Optionally, a plurality of insertion sheets of the insertion cone structure can be collectively enclosed into a hollow cone structure or a hollow pyramid structure.

[0016] Optionally, the number of the insertion cone structures is three or four.

[0017] Optionally, the detection equipment for soil VOCs also includes an operating component, which includes a third connecting member, a second elastic member and an operating block, one end of the third connecting member is connected to an end of the connecting ring away from the first connecting member, the other end of the third connecting member is connected to the operating block, the third connecting member passes through the second shell, the second shell is located between the operating block and the connecting ring, one end of the second elastic member is connected to the second shell, and the other end of the second elastic member is connected to the operating block.

[0018] Optionally, the third connecting member is provided in plurality, the operating block comprises a first plate body and a second plate body, the first plate body is formed into a circular plate-like structure, one end of a plurality of the third connecting members away from the connecting ring is respectively connected to the first plate body, and the plurality of the third connecting members are arranged at intervals along the circumference of the first plate body, and the second plate body is vertically connected to a side of the first plate body away from the third connecting members.

[0019] Optionally, the second plate body is formed as a semicircular plate structure.

[0020] Optionally, the detection device for soil VOCs further comprises a hand-held rod, one end of which is connected to an end of the first shell away from the second shell.

[0021] Beneficial effects:

[0022] 1. Through the above technical solution, when it is necessary to detect VOCs in the soil of a landfill site, the insertion component (in the insertion state) of the present application can be inserted into the soil to be tested, and then the insertion component is adjusted to the exhaust state, and then the vacuum pump is started to suck the gas discharged from the soil from the soil opened by the insertion component, and the gas is transmitted to the VOCs detector, and the VOCs detector is used for detection and analysis to detect the content of VOCs gas in the soil. In this way, relevant detection data can be obtained quickly and directly, which is conducive to improving detection efficiency and detection convenience.

[0023] 2. Other beneficial effects or advantages of the present application will be described in detail in conjunction with the specific structure in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are 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 labor. In addition, it should be understood that the proportional relationship of the various components in the drawings of this specification does not represent the proportional relationship in the actual material selection and design, which is only a schematic diagram of the structure or position, where:

[0025] Figure 1 is a schematic diagram of a three-dimensional structure of a soil VOCs detection device provided by an exemplary embodiment of the present application from one perspective, wherein the insertion component is in an inserted state;

[0026] Figure 2 is a schematic diagram of a three-dimensional structure of a soil VOCs detection device provided by an exemplary embodiment of the present application from another perspective, wherein the insertion component is in an inserted state;

[0027] Figure 3 is a schematic diagram of a three-dimensional structure of a soil VOCs detection device provided by an exemplary embodiment of the present application, wherein the outer wall of the second chamber is hidden to show the steering assembly, wherein the insertion assembly is in a vacuum state;

[0028] Figure 4 yes Figure 3 A schematic diagram of the enlarged local structure at point A in the middle;

[0029] Figure 5 is a partial cross-sectional structural schematic diagram of a first shell and a second shell provided by an exemplary embodiment of the present application, wherein a part of the air intake pipe is also shown;

[0030] Figure 6 is a schematic diagram of an assembly structure of an insertion component and an operation component provided by an exemplary embodiment of the present application, wherein the insertion component is in an inserted state, and a portion of a second housing is also shown;

[0031] Figure 7 is a schematic diagram of the assembly structure of an insertion component and an operation component provided by an exemplary embodiment of the present application, wherein the insertion component is in a vacuum state, and a portion of the second housing is also shown;

[0032] Figure 8 is a partial cross-sectional structural schematic diagram of an intake pipe and a butt-joint pipe in an assembled state provided by an exemplary embodiment of the present application, wherein a filter assembly is also shown;

[0033] Fig. 9It is a schematic diagram of the three-dimensional structure of a filter assembly provided by an exemplary embodiment of the present application.

[0034] Description of the reference numerals in the accompanying drawings:

[0035] 100- detection equipment for soil VOCs; 11- first shell; 111- battery chamber; 112- working chamber; 113- air inlet chamber; 12- second shell; 121- air inlet pipe; 2- insertion assembly; 21- docking tube; 211- first section; 212- second section; 22- connecting ring; 23- insert cone structure; 231- insert sheet; 232- first elastic member; 233- first connecting member; 31- VOCs detector; 32- vacuum pump; 33- battery component; 4- filter assembly; 41- mounting ring; 42- first filter screen; 43- second filter screen; 44- second connecting member; 5- operating assembly; 51- third connecting member; 52- second elastic member; 53- operating block; 531- first plate body; 532- second plate body; 6- hand-held rod. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0038] The technical solution of the present application is described in detail below with reference to the accompanying drawings.

[0039] Example 1

[0040] like Figures 1 to 9As shown, this embodiment provides a detection device 100 for soil VOCs, including a first shell 11 and a second shell 12 connected to each other, an insertion component 2, a VOCs detector 31, a vacuum pump 32 and a battery component 33. The interior of the first shell 11 is divided into a battery chamber 111, a working chamber 112 and an air intake chamber 113 arranged in sequence from bottom to top, and the second shell 12 includes an air intake pipe 121 connected to the air intake chamber 113; the insertion component 2 includes a butt joint pipe 21, a connecting ring 22 and a plurality of insertion cone structures 23, one end of the butt joint pipe 21 is detachably connected to the air intake pipe 121, the connecting ring 22 is movably sleeved outside the air intake pipe 121, the insertion cone structure 23 includes an insertion sheet 231, a first elastic member 232 and a first connecting member 233, the insertion sheets 231 of the plurality of insertion cone structures 23 can be enclosed together into a hollow cone structure, and one end of the insertion sheet 231 is rotatable with the end of the butt joint pipe 21 away from the air intake pipe 121 The first elastic member 232 is connected to the insert sheet 231 at one end corresponding to the inside of the hollow conical structure, the other end of the first elastic member 232 is connected to the butt joint 21, the first connecting member 233 is connected to the insert sheet 231 at one end corresponding to the outside of the hollow conical structure, and the other end of the first connecting member 233 is detachably connected to the connecting ring 22; the VOCs detector 31 and the vacuum pump 32 are installed in the working chamber 112, the air inlet end of the vacuum pump 32 is connected to the air inlet chamber 113, the air outlet end of the vacuum pump 32 is connected to the VOCs detector 31, the battery component 33 is installed in the battery chamber 111, and the battery component 33 is electrically connected to the VOCs detector 31 and the vacuum pump 32 respectively;

[0041] Among them, the insertion component 2 includes an insertion state and a vacuum state. In the insertion state, the insertion pieces 231 of the multiple insertion cone structures 23 abut against each other and together enclose a hollow cone structure, and the first elastic member 232 is in the original length state; in the vacuum state, the insertion pieces 231 of the multiple insertion cone structures 23 are separated from each other, and the first elastic member 232 is in a stretched state.

[0042] Through the above technical solution, when it is necessary to detect VOCs in the soil of the landfill site, the insertion component 2 (in the insertion state) of the present application can be inserted into the soil to be tested, and then the insertion component 2 is adjusted to the exhaust state, and then the vacuum pump 32 is started to suck the gas discharged from the soil from the soil pushed away by the insertion component 2, and the gas is transmitted to the VOCs detector 31, and the VOCs detector 31 is used for detection and analysis to detect the content of VOCs gas in the soil. In this way, it is possible to quickly and directly obtain relevant detection data, which is conducive to improving detection efficiency and detection convenience.

[0043] In this embodiment, it should be noted that

[0044] First, the insertion assembly 2 of the present application maintains the insertion piece 231 in the insertion state (i.e., the insertion pieces 231 of the multiple insertion cone structures 23 are enclosed together to form a cone structure) through the elastic tension of the first elastic member 232, so that it is convenient for the operator to insert the insertion assembly 2 into the soil to be tested with the help of the cone-shaped insertion cone structure 23. At the same time, the insertion assembly 2 of the present application switches from the insertion state to the exhaust state by adjusting the position of the connecting ring 22, and the connecting ring 22 drives the insertion piece 231 to rotate through the first connecting member 233 to switch to the exhaust state, so that it is convenient for the vacuum pump 32 to extract gas from the soil.

[0045] Second, the VOCs detector 31 of the present application can be an instrument in the existing related technology that can detect and analyze the content of VOCs from the gas, such as a photoionization detector (Photo Ionization Detector, abbreviated as PID), a hydrogen flame ionization detector (Flame Ionization Detector, abbreviated as FID), etc. Since such instruments are widely used in the related technology, their structure and working principle will not be repeated in this application.

[0046] In order to facilitate relevant technical personnel to have a clearer and more accurate understanding of the technical solution of the present application, the working principle / working process of the above technical solution is described below in conjunction with the accompanying drawings.

[0047] See also Figure 2 and Figure 6 The insertion assembly 2 shown in these two figures is in the insertion state. The operator can hold the first housing 11 to insert the insertion assembly 2 into the soil to be tested, and then pull the first connecting member 233 through the connecting ring 22 to make the insertion piece 231 rotate relative to the butt joint 21, so that the insertion assembly 2 is switched to the exhaust state (see Figure 3 and Figure 7 As shown), at this time, the vacuum pump 32 can be started to extract gas from the soil to be tested, and the VOCs detector 31 can be used to detect the VOCs content in the extracted gas, thereby completing direct and rapid testing. After the test is completed, after the insertion component 2 is pulled out of the soil, the insertion piece 231 will return to its original position (i.e., the inserted state) under the elastic force of the first connecting piece 233, and at the same time, the insertion piece 231 will drive the connecting ring 22 to return to its original position to facilitate the next test.

[0048] In one embodiment of the present application, an external thread is formed on the outer circumferential surface of the end of the air inlet pipe 121 away from the first housing 11, and an internal thread matching the external thread is formed on the inner circumferential surface of the end of the butt joint pipe 21 close to the air inlet pipe 121. In this way, the air inlet pipe 121 and the butt joint pipe 21 can be quickly and conveniently connected together by threaded connection to complete the assembly of the device.

[0049] In one embodiment of the present application, Figure 8 As shown, the butt joint 21 of the present application may include a first section 211 and a second section 212 that are coaxially connected, the outer diameter of the first section 211 is the same as the outer diameter of the second section 212, the inner diameter of the first section 211 is larger than the inner diameter of the second section 212, and an internal thread is formed on the first section 211; the detection device 100 for soil VOCs also includes a filter assembly 4, the filter assembly 4 includes a mounting ring 41 and a first filter screen 42, the mounting ring 41 is sleeved outside the first filter screen 42, the radial dimension of the mounting ring 41 is less than or equal to the inner diameter dimension of the first section 211, and the radial dimension of the mounting ring 41 is larger than the inner diameter dimension of the second section 212.

[0050] Thus, on one hand, the so-arranged butt joint 21 can not only realize the quick and convenient connection between the air inlet pipe 121 and the butt joint 21, but also realize the stable and quick installation and removal of the filter assembly 4, so that the operator can replace or repair the filter assembly 4 as needed. On the other hand, the so-arranged mounting ring 41 can be stably clamped by the butt joint 21 and the air inlet pipe 121, and the first filter screen 42 can prevent the debris in the soil from being sucked in by the negative pressure of the vacuum pump 32.

[0051] In one embodiment of the present application, Figure 8 and Fig. 9 As shown, the filter assembly 4 of the present application may also include a second filter screen 43 and a second connecting member 44. The first filter screen 42 is connected to the second filter screen 43 through the second connecting member 44. The second filter screen 43 and the first filter screen 42 are parallel to each other, and the size of the second filter screen 43 matches the inner diameter of the second section 212; wherein the aperture of the second filter screen 43 is larger than the aperture of the first filter screen 42.

[0052] In this way, the second filter 43 and the first filter 42 can be set in this way to better block debris. At the same time, the position of the second filter 43 can be set as needed. For example, the second filter 43 can be set close to the end of the butt joint 21 close to the insertion piece 231. This is also beneficial for directly pressing the soil and preventing soil (or debris) from entering the butt joint 21 and contaminating the butt joint 21.

[0053] In one embodiment of the present application, Figure 2 and Figure 6As shown, the insertion pieces 231 of the multiple insertion cone structures 23 of the present application can be enclosed together to form a hollow cone structure. Alternatively, in another embodiment, the insertion pieces 231 of the multiple insertion cone structures 23 of the present application can be enclosed together to form a hollow pyramid structure. In this way, the hollow cone structure or the hollow pyramid structure can effectively ensure the convenience and accuracy of inserting the insertion structure into the soil.

[0054] In one embodiment of the present application, the number of the insert cone structures 23 of the present application can be three or four. In this way, the number of the insert cone structures 23 is three or four, and not only has a certain size for easy processing and manufacturing, but also has fewer parts and components for easy assembly.

[0055] Since part of the air inlet pipe 121 may be inserted into the soil during soil testing, and since the second shell 12 has a certain volume, it may be inconvenient for an operator to directly control the position of the connecting ring 22 .

[0056] In view of this, in one embodiment of the present application, Figures 1 to 3 , Figure 6 and Figure 7 As shown, the soil VOCs detection device 100 of the present application may also include an operating component 5, which includes a third connecting member 51, a second elastic member 52 and an operating block 53. One end of the third connecting member 51 is connected to an end of the connecting ring 22 away from the first connecting member 233, and the other end of the third connecting member 51 is connected to the operating block 53. The third connecting member 51 passes through the second shell 12, and the second shell 12 is located between the operating block 53 and the connecting ring 22. One end of the second elastic member 52 is connected to the second shell 12, and the other end of the second elastic member 52 is connected to the operating block 53.

[0057] In this way, when performing soil testing, the operator can indirectly control the position of the connecting ring 22 through the operating component 5 thus arranged, thereby facilitating the adjustment of the insertion component 2 from the insertion state to the air extraction state.

[0058] In one embodiment of the present application, Figure 6 and Figure 7 As shown, the third connecting member 51 of the present application can be set to multiple, the operating block 53 includes a first plate body 531 and a second plate body 532, the first plate body 531 is formed into a circular plate structure, and the ends of the multiple third connecting members 51 away from the connecting ring 22 are respectively connected to the first plate body 531, and the multiple third connecting members 51 are arranged at intervals along the circumference of the first plate body 531, and the second plate body 532 is vertically connected to the side of the first plate body 531 away from the third connecting member 51.

[0059] Thus, on one hand, the third connecting member 51 thus arranged can facilitate the operator to control the position of the connecting ring 22 through the operating block 53, and the connecting ring 22 has a more stable movement effect, so that the insertion assembly 2 can be more stably and accurately switched from the insertion state to the air extraction state. On the other hand, during the inspection, the operating block 53 thus arranged makes it easier for the operator to hold the second plate 532, thereby facilitating the operator to control the position of the connecting ring 22 through the operating block 53.

[0060] In one embodiment of the present application, Figure 6 and Figure 7 As shown, the second plate body 532 of the present application can be formed into a semicircular plate structure. In this way, the second plate body 532 of the semicircular plate structure is more suitable for the gripping area of ​​human fingers and is more convenient for operators to grip.

[0061] In one embodiment of the present application, Figures 1 to 3 As shown, the soil VOCs detection device 100 of the present application may further include a hand-held rod 6, one end of which is connected to an end of the first housing 11 away from the second housing 12. In this way, during detection, the operator can more conveniently hold the soil VOCs detection device 100 of the present application through the hand-held rod 6.

[0062] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A detection device for soil VOCs, characterized in that: include: A first shell (11) and a second shell (12) connected to each other, wherein the interior of the first shell (11) is divided into a battery chamber (111), a working chamber (112) and an air intake chamber (113) arranged in sequence from bottom to top, and the second shell (12) comprises an air intake pipe (121) communicating with the air intake chamber (113); The insertion assembly (2) comprises a butt joint tube (21), a connecting ring (22) and a plurality of insert cone structures (23); one end of the butt joint tube (21) is detachably connected to the air intake pipe (121); the connecting ring (22) is movably sleeved outside the air intake pipe (121); the insert cone structure (23) comprises an insert sheet (231), a first elastic member (232) and a first connecting member (233); the insert sheets (231) of the plurality of insert cone structures (23) can be collectively enclosed into a hollow cone structure; the insert sheets (231) ) is rotatably connected to an end of the butt joint pipe (21) away from the intake pipe (121), one end of the first elastic member (232) is connected to a side of the inserting piece (231) corresponding to the inside of the hollow conical structure, the other end of the first elastic member (232) is connected to the butt joint pipe (21), one end of the first connecting member (233) is connected to a side of the inserting piece (231) corresponding to the outside of the hollow conical structure, and the other end of the first connecting member (233) is detachably connected to the connecting ring (22); A VOCs detector (31), a vacuum pump (32) and a battery component (33), wherein the VOCs detector (31) and the vacuum pump (32) are installed in the working chamber (112), an air inlet end of the vacuum pump (32) is communicated with the air inlet chamber (113), an air outlet end of the vacuum pump (32) is communicated with the VOCs detector (31), the battery component (33) is installed in the battery chamber (111), and the battery component (33) is electrically connected to the VOCs detector (31) and the vacuum pump (32) respectively; The insertion assembly (2) comprises an insertion state and a vacuum state. In the insertion state, the insertion pieces (231) of the plurality of insertion cone structures (23) abut against each other and are collectively enclosed into a hollow cone structure, and the first elastic member (232) is in an original length state. In the vacuum state, the insertion pieces (231) of the plurality of insertion cone structures (23) are separated from each other, and the first elastic member (232) is in a stretched state.

2. The soil VOCs detection device according to claim 1, characterized in that: An external thread is formed on the outer circumferential surface of the end of the air intake pipe (121) away from the first shell (11), and an internal thread matching the external thread is formed on the inner circumferential surface of the end of the butt joint pipe (21) close to the air intake pipe (121).

3. The soil VOCs detection device according to claim 2, characterized in that: The butt joint pipe (21) comprises a first section (211) and a second section (212) which are coaxially connected, the outer diameter of the first section (211) is the same as the outer diameter of the second section (212), the inner diameter of the first section (211) is larger than the inner diameter of the second section (212), and the internal thread is formed on the first section (211); The soil VOCs detection device further comprises a filter assembly (4), wherein the filter assembly (4) comprises a mounting ring (41) and a first filter screen (42), wherein the mounting ring (41) is sleeved outside the first filter screen (42), wherein the radial dimension of the mounting ring (41) is less than or equal to the inner diameter dimension of the first section (211), and the radial dimension of the mounting ring (41) is greater than the inner diameter dimension of the second section (212).

4. The soil VOCs detection device according to claim 3, characterized in that: The filter assembly (4) further comprises a second filter screen (43) and a second connecting member (44); the first filter screen (42) is connected to the second filter screen (43) via the second connecting member (44); the second filter screen (43) and the first filter screen (42) are parallel to each other, and the size of the second filter screen (43) matches the inner diameter of the second section (212); Wherein, the aperture of the second filter screen (43) is larger than the aperture of the first filter screen (42).

5. The soil VOCs detection device according to claim 1, characterized in that: The insertion pieces (231) of the plurality of insertion cone structures (23) can be collectively enclosed into a hollow cone structure or a hollow pyramid structure.

6. The soil VOCs detection device according to claim 1, characterized in that: The number of the insertion cone structures (23) is three or four.

7. The soil VOCs detection device according to claim 1, characterized in that: The soil VOCs detection device further comprises an operating component (5), wherein the operating component (5) comprises a third connecting member (51), a second elastic member (52) and an operating block (53), wherein one end of the third connecting member (51) is connected to an end of the connecting ring (22) away from the first connecting member (233), and the other end of the third connecting member (51) is connected to the operating block (53), and the third connecting member (51) passes through the second shell (12), and the second shell (12) is located between the operating block (53) and the connecting ring (22), and one end of the second elastic member (52) is connected to the second shell (12), and the other end of the second elastic member (52) is connected to the operating block (53).

8. The soil VOCs detection device according to claim 7, characterized in that: The third connecting member (51) is provided in plurality, and the operating block (53) comprises a first plate body (531) and a second plate body (532), the first plate body (531) being formed into a circular plate-shaped structure, and the ends of the plurality of third connecting members (51) away from the connecting ring (22) are respectively connected to the first plate body (531), and the plurality of third connecting members (51) are arranged at intervals along the circumference of the first plate body (531), and the second plate body (532) is vertically connected to the side of the first plate body (531) away from the third connecting member (51).

9. The soil VOCs detection device according to claim 8, characterized in that: The second plate body (532) is formed into a semicircular plate structure.

10. The soil VOCs detection device according to any one of claims 1 to 9, characterized in that: The soil VOCs detection device further comprises a hand-held rod (6), one end of the hand-held rod (6) being connected to an end of the first shell (11) away from the second shell (12).

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