A portable indoor environment detection device

Abstract

The invention relates to the technical field of environmental detection, and discloses a portable indoor environment detection device, comprising a shell, a reversing module mounted on the shell, and a sampling module arranged on the reversing module. Under the action of the reversing module, a sampling port of the sampling module for obtaining indoor air changes its orientation reciprocatingly on the horizontal side. One end of a detection head contacts the atmosphere collected by the sampling module for detection, and the other end is electrically connected to a detector through a wire, and the detection parameters are fed back to the detector for display. A switching module is coordinated between the sampling module and the detection head. Under the action of the switching module, when a detection head is inserted into the sampling module for detection, the remaining detection heads are automatically separated from the sampling module. In a detection process, only one detection head with corresponding parameters is combined with a sampling position for detection. When the detection head is replaced, the previously combined detection head will automatically pop out, thereby avoiding the possibility of mutual interference.

Description

Technical Field

[0001] The present invention relates to the technical field of environment detection, and more specifically, to a portable indoor environment detection device. Background Art

[0002] The most important component of indoor environmental testing is the testing of indoor air quality. Air quality testing refers to the testing of the concentration of pollutants such as harmful gases (such as carbon dioxide, carbon monoxide), volatile organic compounds (VOCs) and dust in indoor air, helping people understand the actual conditions of the indoor air environment so that timely measures can be taken to improve the indoor environment.

[0003] Because the indoor space layout is different during actual detection, the distribution of indoor air is often uneven. In order to reflect the comprehensiveness of the detection, it has become a common understanding in air detection to add certain activities to the detection parts that are in direct contact with the atmosphere to sample the air in different directions.

[0004] Against the above technical background, a Chinese patent with publication number CN115267075A discloses a method and device for indoor air quality detection, including a shell structure and a driving device, wherein a detection device is arranged inside the shell structure; the driving device is used to drive the detection device to rotate inside the shell structure, thereby enabling multi-angle detection, and the driving device increases indoor air circulation.

[0005] The above-mentioned indoor air detection equipment has the function of collecting air from different directions. However, the existing devices similar to the above-mentioned indoor air detection equipment still have the following shortcomings in practical application:

[0006] It has been mentioned above that air quality detection requires concentration detection of different pollutants. Therefore, in actual multi-parameter detection, different types of detection heads are often placed at the same sampling location for synchronous detection. However, due to limited space at the sampling location, placing multiple different detection heads at the same time will cause physical interference between each other, affecting the accuracy of the detection results. Summary of the invention

[0007] The present invention provides a portable indoor environment detection device, which solves the technical problem in the related art that each detection head in multi-parameter detection interferes with each other and reduces the detection accuracy due to sampling position limitation.

[0008] The present invention provides a portable indoor environment detection device, comprising a housing, on which a moving part and a lifting handle are installed, and under the action of the moving part, the housing is driven to move in a portable manner by pulling the lifting handle;

[0009] The reversing module is mounted on the housing;

[0010] The sampling module is arranged on the reversing module. Under the action of the reversing module, the sampling port of the sampling module for obtaining indoor air changes its position reciprocatingly on the horizontal side.

[0011] Several detection heads, detectors and wires. One end of the detection head contacts the atmosphere collected by the sampling module for detection, and the other end is electrically connected to the detector through the wire to feed back the detection parameters to the detector display;

[0012] The switching module is coordinated between the sampling module and the detection head. Under the action of the switching module, when one detection head is inserted into the sampling module for detection, the remaining detection heads automatically detach from the sampling module.

[0013] As a further solution of the present invention: the reversing module includes a motor, a ring gear, a connecting arm, a first clamping column, a gear, a second clamping column, a rotating shaft, a turntable, a first clamping slot and a second clamping slot, the motor is fixed in the housing, the ring gear is fixed on the output end of the motor, the connecting arm is fixed on the top of the ring gear, the first clamping column is symmetrically fixedly installed on the end of the connecting arm, a gear meshing with the ring gear is rotatably installed on the housing, the second clamping column is fixedly installed on the gear, the rotating shaft is rotatably installed on the housing, the turntable is fixedly sleeved on the rotating shaft, the turntable is provided with a first clamping slot cooperating with the first clamping column, the turntable is provided with a second clamping slot cooperating with the second clamping column, and the first clamping slot and the second clamping slot are adjacently arranged on the turntable.

[0014] As a further solution of the present invention: the sampling module includes a sampling cabin, a front air hood, a rear air hood and an exhaust fan. The sampling cabin is fixedly installed on the end of the rotating shaft. The front air hood is installed at one end of the sampling cabin, and the rear air hood is installed at the other end. One end of the rear air hood is connected to the exhaust fan. The negative pressure generated by the exhaust fan is transmitted to the mouth of the front air hood through the rear air hood and the sampling cabin, thereby sucking the indoor air into the sampling cabin.

[0015] As a further solution of the present invention: the switching module includes a base, a slide rail, a cover plate, a slide plate, a first spring, a reset pressure block, a switching pressure block, a connecting plate, a clamping head and a second spring. A base is fixed on one side of the sampling module, and a slide rail and a cover plate are fixedly arranged in the base. A slide plate is slidably installed on the slide rail, and a first spring is connected between one end of the slide plate and the inner wall of the base. A straight cut and a plurality of barb notches are opened on the slide plate. A connecting plate is fixed on the clamping head, and the connecting plate and the cover plate are slidably arranged. The reset pressure block and the switching pressure block are fixedly arranged through the connecting plate and the clamping head. The clamping head on the reset pressure block side cooperates with the straight cut, and the clamping head on the switching pressure block side cooperates with the barb notch. A second spring is installed between the reset pressure block and the switching pressure block and the cover plate, and the switching pressure block is fixedly connected to the detection head.

[0016] As a further solution of the present invention: a nameplate is fixed on each detection head, and information distinguishing detection parameters of the detection head is engraved on the nameplate.

[0017] As a further solution of the present invention: the sampling module also includes a seal, which includes a mounting ring and blades. The sampling cabin is provided with a plurality of sockets corresponding to the detection head. A mounting ring is fixed at the edge of each socket, and a plurality of blades are fixed in the mounting ring. The blades are elastic, and the dividing lines between the blades intersect at the center of the mounting ring.

[0018] As a further solution of the present invention: the sampling module also includes a cleaning part, which includes a mounting sleeve, a bracket and a brush block. A number of mounting sleeves corresponding to the detection head are arranged on the sampling cabin. Each mounting sleeve is fixedly connected to the outer wall of the sampling cabin through the bracket. The mounting sleeve is sleeved on the detection head. A brush block that is in extrusion contact with the detection head is fixed in the mounting sleeve.

[0019] As a further solution of the present invention: an inverted cone-shaped transition is formed between the port of the front wind shield facing the external environment and the port that fits the sampling cabin.

[0020] As a further solution of the present invention: a telescopic section is provided at the connection between the wire and the detector, and the telescopic section is stacked in a spring wire pattern.

[0021] As a further solution of the present invention: the top of the switching pressing block and the top of the detection head are on the same horizontal plane.

[0022] The beneficial effects of the present invention are:

[0023] The present invention enables the sampling cabin connected to the rotating shaft to perform a pendulum-like reciprocating swing, and there will be a certain pause at each node of the swing, that is, when the first clamping column is docked with the first clamping slot, and when the second clamping column is docked with the second clamping slot. Compared with directly making the sampling cabin perform continuous circular rotation, such action characteristics cause less disturbance to the surrounding airflow, and the airflow entering the sampling cabin is relatively uniform.

[0024] When it is necessary to replace the detection head with different detection parameters, press the corresponding switching pressure block. When the corresponding clamping head is pressed into the barb notch, it will squeeze the slide plate to move toward the first spring side. The movement at this time will release the engagement state between the aforementioned barb notch and the clamping head, and the second spring corresponding to the switching pressure block will pop up to reset it, entering the engagement state between the corresponding clamping head and the barb notch at this time. Correspondingly, the state of the replaced detection head extending into the sampling cabin is fixed at this time, and the aforementioned detection head pops out of the sampling cabin. In general, that is, in one detection process, only one detection head with corresponding parameters will be combined with the sampling part for detection. When the detection head is replaced, the previously combined detection head will pop out automatically, avoiding the possibility of interference between each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2It is a schematic diagram of the expanded structure of the reversing module and the sampling module of the present invention;

[0027] Figure 3 It is a detailed structural diagram of the reversing module of the present invention;

[0028] Figure 4 It is a schematic diagram of the coordinated structure of the sampling module, the detection head and the detection instrument of the present invention;

[0029] Figure 5 It is a schematic diagram of the working structure of the sampling module and the detection head of the present invention;

[0030] Figure 6 The present invention Figure 5 Detailed structural diagram at A in the middle;

[0031] Figure 7 It is a schematic diagram of the first unfolded structure of the switching module of the present invention;

[0032] Figure 8 It is a schematic diagram of the second unfolded structure of the switching module of the present invention.

[0033] In the figure:

[0034] 1. housing; 100. moving part; 101. lifting handle;

[0035] 2. Reversing module; 200. Motor; 201. Gear ring; 202. Connecting arm; 203. First clamping column; 204. Gear; 205. Second clamping column; 206. Rotating shaft; 207. Rotating disk; 208. First clamping slot; 209. Second clamping slot;

[0036] 3. Sampling module; 300. Sampling cabin; 301. Front air hood; 302. Rear air hood; 303. Exhaust fan;

[0037] 304, sealing member; 3040, mounting ring; 3041, blade;

[0038] 305, cleaning part; 3050, mounting sleeve; 3051, bracket; 3052, brush block;

[0039] 4. Detection head; 400, nameplate;

[0040] 5. Detector;

[0041] 6. Conductor; 600, telescopic section;

[0042] 7. Switching module; 700. Base; 701. Slide rail; 702. Cover plate; 703. Slide plate; 7031. Straight cut; 7032. Barb notch; 704. First spring; 705. Reset pressure block; 706. Switching pressure block; 707. Connecting plate; 708. Clamp; 709. Second spring. DETAILED DESCRIPTION

[0043] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Various examples may omit, replace, or add various processes or components as needed. In addition, the features described in some examples may also be combined in other examples.

[0044] like Figure 1 - Figure 8 As shown, a portable indoor environment detection device includes a shell 1, a reversing module 2, a sampling module 3, a detection head 4, a detector 5, a wire 6 and a switching module 7. A moving part 100 and a lifting handle 101 are installed on the shell 1. Under the action of the moving part 100, the shell 1 is driven to move in a portable manner by pulling the lifting handle 101. The reversing module 2 is installed on the shell 1, and the sampling module 3 is arranged on the reversing module 2. Under the action of the reversing module 2, the sampling port of the sampling module 3 for obtaining indoor air reciprocates in position on the horizontal side. One end of the detection head 4 contacts with the atmosphere collected by the sampling module 3 for detection, and the other end is electrically connected to the detector 5 through the wire 6, and the detection parameters are fed back to the detector 5 for display. The switching module 7 is coordinated between the sampling module 3 and the detection head 4. Under the action of the switching module 7, when one detection head 4 is inserted into the sampling module 3 for detection, the remaining detection heads 4 automatically detach from the sampling module 3.

[0045] refer to Figure 2 and Figure 3 Specifically, the reversing module 2 includes a motor 200, a gear ring 201, a connecting arm 202, a first clamping column 203, a gear 204, a second clamping column 205, a rotating shaft 206, a rotating disk 207, a first clamping slot 208 and a second clamping slot 209. The motor 200 is fixed in the housing 1, the gear ring 201 is fixed on the output end of the motor 200, the connecting arm 202 is fixed on the top of the gear ring 201, and the first clamping column 203 is symmetrically fixedly installed on the end of the connecting arm 202. A gear 204 meshing with the gear ring 201 is rotatably mounted on the shell 1, a second clamping column 205 is fixedly mounted on the gear 204, a rotating shaft 206 is rotatably mounted on the outer shell 1, a rotating disk 207 is fixedly sleeved on the rotating shaft 206, a first clamping groove 208 cooperating with the first clamping column 203 is formed on the rotating disk 207, a second clamping groove 209 cooperating with the second clamping column 205 is formed on the rotating disk 207, and the first clamping groove 208 and the second clamping groove 209 are adjacently arranged on the rotating disk 207.

[0046] refer to Figure 2The sampling module 3 includes a sampling cabin 300, a front air hood 301, a rear air hood 302 and an exhaust fan 303. The sampling cabin 300 is fixedly installed on the end of the rotating shaft 206. The front air hood 301 is installed at one end of the sampling cabin 300, and the rear air hood 302 is installed at the other end. One end of the rear air hood 302 is connected to the exhaust fan 303. The negative pressure generated by the exhaust fan 303 is transmitted to the mouth of the front air hood 301 through the rear air hood 302 and the sampling cabin 300, so that the indoor air is sucked into the sampling cabin 300.

[0047] The specific implementation of the reversing module 2 is as follows. When sampling before air detection, the motor 200 is turned on to drive the ring gear 201 to rotate, and the connecting arm 202 and the first clamping column 203 installed on the ring gear 201 rotate synchronously. Through the meshing relationship, the gear 204 will also rotate. During the rotation process, the first clamping column 203 on one side is first inserted into the first clamping groove 208, pushing the turntable 207 and the rotating shaft 206 to rotate a certain angle, and then as the turntable 207 rotates, the aforementioned first clamping column 203 is disengaged from the first clamping groove 208, and the first clamping column 203 installed on the gear is disengaged from the first clamping groove 208. The second clamping column 205 on 204 rotates successively and cuts into the second clamping groove 209, driving the turntable 207 to rotate. On the whole, the sampling cabin 300 connected to the rotating shaft 206 is performing a pendulum-like reciprocating swing, and there will be a certain pause at each node of the swing (when the first clamping column 203 is docked with the first clamping groove 208, and when the second clamping column 205 is docked with the second clamping groove 209). Compared with directly making the sampling cabin 300 perform continuous circular rotation, such action characteristics cause less disturbance to the surrounding airflow, and the airflow entering the sampling cabin 300 is relatively uniform.

[0048] refer to Figure 5 , Figure 6 and Figure 7, further, compared with the existing detection device, the present application also has the characteristic of avoiding physical interference between different detection heads 4, which is achieved through the switching module 7. Specifically, the switching module 7 includes a base 700, a slide rail 701, a cover plate 702, a slide plate 703, a first spring 704, a reset pressure block 705, a switching pressure block 706, a connecting plate 707, a clamping head 708 and a second spring 709. A base 700 is fixed on one side of the sampling module 3, a slide rail 701 and a cover plate 702 are fixedly arranged in the base 700, a slide plate 703 is slidably installed on the slide rail 701, and a first spring is connected between one end of the slide plate 703 and the inner wall of the base 700. Spring 704, a straight cut 7031 and a plurality of barb notches 7032 are provided on the slide plate 703, a connecting plate 707 is fixed on the clamping head 708, the connecting plate 707 and the cover plate 702 are slidingly arranged, the reset pressure block 705 and the switching pressure block 706 are fixedly arranged with the clamping head 708 through the connecting plate 707, the clamping head 708 on the side of the reset pressure block 705 cooperates with the straight cut 7031, the clamping head 708 on the side of the switching pressure block 706 cooperates with the barb notches 7032, a second spring 709 is installed between the reset pressure block 705 and the switching pressure block 706 and the cover plate 702, and the switching pressure block 706 is fixedly connected to the detection head 4.

[0049] The specific implementation of the switching module 7 is that when it is necessary to perform air detection of a certain parameter, in order to avoid interference with the detection head 4 of other parameters, the switching pressure block 706 fixed to the detection head 4 of the parameter is pressed, the corresponding connecting plate 707 and the clamping head 708 are pressed down, the second spring 709 is compressed, and the clamping head 708 is pressed into the corresponding barb notch 7032. When the clamping head 708 is pressed into the barb notch 7032, the slide plate 703 is first squeezed to move toward the first spring 704 side. The first spring 704 is compressed. After being pressed into place, the barb-shaped groove on the barb notch 7032 clamps the clamping head 708, so that the pressed state of the switching pressure block 706 is fixed at this time, and the corresponding detection head 4 is inserted into the sampling cabin 300 and connected with the air flow channel (along the Figure 5 When the detection head 4 with different detection parameters needs to be replaced, the corresponding switching block 706 is pressed. When the corresponding clamping head 708 is pressed into the barb notch 7032, the slide plate 703 will be squeezed to move toward the first spring 704 side. The movement at this time will release the engagement state between the aforementioned barb notch 7032 and the clamping head 708. The second spring 709 corresponding to the aforementioned switching block 706 pops up to reset it, and the corresponding clamping head 708 and the barb notch 7032 are engaged at this time. Then, correspondingly, the state of the replaced detection head 4 extending into the sampling chamber 300 is fixed, and the aforementioned detection head 4 pops out of the sampling chamber 300. In general, that is, in one detection process, only one detection head 4 with corresponding parameters will be combined with the sampling part for detection. When the detection head 4 is replaced, the previously combined detection head 4 will automatically pop out, avoiding the possibility of interference between each other.

[0050] In addition, when all the detection processes are completed, the reset block 705 is directly pressed. Since the corresponding clamping head 708 is inserted into the straight cutout 7031 on the slide plate 703, no subsequent locking effect will be produced, and the slide plate 703 will only be pushed to reset the switching module 7. Figure 7 The initial state shown in .

[0051] refer to Figure 6 , following the above, a nameplate 400 is fixed on each detection head 4, and the nameplate 400 is engraved with information for distinguishing detection parameters of the detection head 4, so as to distinguish detection heads 4 for detecting different parameters.

[0052] The sampling module 3 also includes a sealing member 304, which includes a mounting ring 3040 and blades 3041. The sampling chamber 300 is provided with a plurality of sockets corresponding to the detection head 4. A mounting ring 3040 is fixed at the edge of each socket, and a plurality of blades 3041 are fixed in the mounting ring 3040. The blades 3041 are elastic, and the dividing lines between the blades 3041 intersect at the center of the mounting ring 3040. The socket is a passage for the detection head 4 to enter the sampling chamber 300. Through the above arrangement, during the switching process of the detection head 4, when the front detection head 4 pops out of the sampling chamber 300, the blades 3041 will automatically close to keep the passage closed, so that the sampled atmosphere will not leak.

[0053] The sampling module 3 also includes a cleaning piece 305, which includes a mounting sleeve 3050, a bracket 3051 and a brush block 3052. A number of mounting sleeves 3050 corresponding to the detection head 4 are arranged on the sampling cabin 300. Each mounting sleeve 3050 is fixedly connected to the outer wall of the sampling cabin 300 through the bracket 3051. The mounting sleeve 3050 is sleeved on the detection head 4. A brush block 3052 that is in extrusion contact with the detection head 4 is fixed in the mounting sleeve 3050. The downward pressing action of the detection head 4 causes it to frictionally contact with the cleaning piece 305. Under the friction of the brush block 3052, impurities that may be contaminated on the surface of the detection head 4 during detection are removed to avoid affecting subsequent detection effects.

[0054] The port of the front wind shield 301 facing the external environment and the port of the sampling cabin 300 are in an inverted cone-shaped transition, which improves the degree of air gathering during sampling.

[0055] A telescopic section 600 is provided at the connection between the wire 6 and the detector 5. The telescopic section 600 is stacked in a spring wire pattern. The wire 6 can be telescopic to adapt to the reciprocating deflection movement of the detection head 4 following the sampling module 3 to avoid interference.

[0056] The above describes an embodiment of the present embodiment, but the present embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, all of which are within the protection of the present embodiment.

Claims

1. A portable indoor environment detection device, characterized in that: include: A housing (1), wherein a moving part (100) and a lifting handle (101) are mounted on the housing (1), and under the action of the moving part (100), the housing (1) is driven to move in a portable manner by pulling the lifting handle (101); A reversing module (2) is mounted on the housing (1); The sampling module (3) is arranged on the reversing module (2), and under the action of the reversing module (2), the sampling port of the sampling module (3) for obtaining indoor air changes its position reciprocatingly on the horizontal side; A plurality of detection heads (4), detection instruments (5) and wires (6); one end of the detection head (4) contacts the atmosphere collected by the sampling module (3) for detection, and the other end is electrically connected to the detection instrument (5) via the wire (6) to feed back detection parameters to the detection instrument (5) for display; A switching module (7) is matched between the sampling module (3) and the detection head (4). Under the action of the switching module (7), when one of the detection heads (4) is inserted into the sampling module (3) for detection, the remaining detection heads (4) are automatically separated from the sampling module (3); The reversing module (2) comprises a motor (200), a gear ring (201), a connecting arm (202), a first clamping column (203), a gear (204), a second clamping column (205), a rotating shaft (206), a rotating disk (207), a first clamping slot (208) and a second clamping slot (209); the motor (200) is fixed in the housing (1); the gear ring (201) is fixed on the output end of the motor (200); the connecting arm (202) is fixed on the top of the gear ring (201); the first clamping column (203) is symmetrically fixedly mounted on the end of the connecting arm (202); the housing (1) is provided with a plurality of connecting arms (202) and a plurality of connecting arms (203) are provided. (1) is rotatably mounted with a gear (204) meshing with a gear ring (201), a second clamping column (205) is fixedly mounted on the gear (204), a rotating shaft (206) is rotatably mounted on the housing (1), a rotating disk (207) is fixedly sleeved on the rotating shaft (206), a first clamping groove (208) cooperating with the first clamping column (203) is formed on the rotating disk (207), a second clamping groove (209) cooperating with the second clamping column (205) is formed on the rotating disk (207), and the first clamping groove (208) and the second clamping groove (209) are adjacently arranged on the rotating disk (207); The sampling module (3) comprises a sampling cabin (300), a front air hood (301), a rear air hood (302) and an exhaust fan (303); the sampling cabin (300) is fixedly mounted on the end of the rotating shaft (206); one end of the sampling cabin (300) is mounted with the front air hood (301), and the other end is mounted with the rear air hood (302); one end of the rear air hood (302) is connected to the exhaust fan (303); the negative pressure generated by the exhaust fan (303) is transmitted to the mouth of the front air hood (301) through the rear air hood (302) and the sampling cabin (300), thereby sucking indoor air into the sampling cabin (300); The switching module (7) comprises a base (700), a slide rail (701), a cover plate (702), a slide plate (703), a first spring (704), a reset pressure block (705), a switching pressure block (706), a connecting plate (707), a clamping head (708) and a second spring (709). The base (700) is fixed on one side of the sampling module (3). The slide rail (701) and the cover plate (702) are fixedly arranged in the base (700). The slide plate (703) is slidably mounted on the slide rail (701). The first spring (704) is connected between one end of the slide plate (703) and the inner wall of the base (700). The slide plate (703) is provided with a straight cutout (7031) and a plurality of A connecting plate (707) is fixed on the clamping head (708), the connecting plate (707) and the cover plate (702) are slidably arranged, the reset pressure block (705) and the switching pressure block (706) are fixedly arranged on the clamping head (708) through the connecting plate (707), the clamping head (708) on the side of the reset pressure block (705) cooperates with the straight cut (7031), the clamping head (708) on the side of the switching pressure block (706) cooperates with the connecting plate (7032), a second spring (709) is installed between the reset pressure block (705) and the switching pressure block (706) and the cover plate (702), and the switching pressure block (706) is fixedly connected to the detection head (4).

2. A portable indoor environment detection device according to claim 1, characterized in that: A nameplate (400) is fixed on each of the detection heads (4), and information for distinguishing detection parameters of the detection head (4) is engraved on the nameplate (400).

3. A portable indoor environment detection device according to claim 1, characterized in that: The sampling module (3) further comprises a sealing member (304), wherein the sealing member (304) comprises a mounting ring (3040) and blades (3041); the sampling chamber (300) is provided with a plurality of sockets corresponding to the detection head (4); a mounting ring (3040) is fixed at the edge of each socket; a plurality of blades (3041) are fixed in the mounting ring (3040); the blades (3041) are elastic, and the dividing lines between the blades (3041) intersect at the center of the mounting ring (3040).

4. A portable indoor environment detection device according to claim 1, characterized in that: The sampling module (3) further comprises a cleaning member (305), the cleaning member (305) comprising a mounting sleeve (3050), a bracket (3051) and a brush block (3052); a plurality of mounting sleeves (3050) corresponding to the detection head (4) are arranged on the sampling chamber (300); each mounting sleeve (3050) is fixedly connected to the outer wall of the sampling chamber (300) via the bracket (3051); the mounting sleeve (3050) is sleeved on the detection head (4); and a brush block (3052) is fixed in the mounting sleeve (3050) and is in extrusion contact with the detection head (4).

5. A portable indoor environment detection device according to claim 1, characterized in that: The transition between the port of the front wind shield (301) facing the external environment and the port that fits the sampling cabin (300) is in an inverted cone shape.

6. A portable indoor environment detection device according to claim 1, characterized in that: A telescopic section (600) is provided at the connection between the wire (6) and the detector (5), and the telescopic section (600) is stacked in a spring wire pattern.

7. A portable indoor environment detection device according to claim 1, characterized in that: The top of the switching pressing block (706) and the top of the detection head (4) are located on the same horizontal plane.

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