VOC detection device

Abstract

The present application provides a VOC detection device, including a handheld detection host and a probe rod, wherein the probe rod includes a telescopic rod with a hollow structure, a hose with a spiral structure is provided inside the telescopic rod, one end of the hose is connected to the air inlet of the detection host through an air guide tube, and the other end of the hose is connected to an air suction head, and the air suction head is installed at one end of the telescopic rod. The present application can facilitate the detection of VOC gas concentration in certain narrow or tricky locations, thereby improving the detection effect of the entire detection area.

Description

Technical Field

[0001] The present application relates to gas detection technology, and in particular to a VOC detection device. Background Art

[0002] The VOC detection device is a handheld detection instrument used to detect the concentration of VOC gases. At present, the VOC detection device includes a detection host and a probe rod. The probe rod is fixedly connected to the air inlet of the detection host. When in use, the staff holds the detection host, and then the staff stands in the area to be detected, starts the detection host, and the detection host inhales air from the probe rod. The air in the area to be detected is sucked into the detection host through the probe rod. The detection host detects the VOC gas concentration in the air. After the detection is completed, the display screen of the detection host displays the detection value.

[0003] However, the existing probe rod is usually a fixed structure and the length of the probe rod is relatively short. Therefore, when it is necessary to detect certain narrow or tricky locations in the detection area, it is inconvenient to place the probe rod at the specified position for detection, which will affect the detection effect of the entire detection area. Utility Model Content

[0004] The present application provides a VOC detection device to solve the problem that existing VOC detection devices are not convenient for detecting certain narrow or tricky locations.

[0005] The present application provides a VOC detection device, including a handheld detection host and a probe rod, wherein the probe rod includes a telescopic rod with a hollow structure, and a hose with a spiral structure is provided inside the telescopic rod;

[0006] One end of the hose is connected to the air inlet of the detection host through an air guide pipe, and the other end of the hose is connected to an air suction head, and the air suction head is installed at one end of the telescopic rod.

[0007] Optionally, a filter screen for filtering dust is fixed inside the suction head.

[0008] Optionally, the suction head comprises a mounting tube and a suction tube, both of which are open at one end, and the open end of the suction tube is sleeved on the open end of the mounting tube and is threadedly connected to the mounting tube;

[0009] A pressure ring is fixed inside the air suction cylinder, and a plurality of air inlet holes located above the pressure ring are opened on the air suction cylinder;

[0010] The filter screen can be tightly pressed between the upper end of the mounting cylinder and the pressing ring;

[0011] The installation tube is fixedly connected to one end of the telescopic rod, and the other end of the hose is communicated with the installation tube.

[0012] Optionally, the telescopic rod includes a sleeve, the number of the sleeves is not less than three and is distributed along the same axis, and two adjacent sleeves are sleeved on each other and can slide along the axial direction;

[0013] Of the two adjacent sleeves, a locking structure is installed on the sleeve with a larger outer diameter, and the locking structure can press tightly against the outer wall of the sleeve with a smaller outer diameter, so as to lock the two adjacent sleeves;

[0014] The mounting tube is mounted on the end of the sleeve with the smallest outer diameter of the telescopic rod.

[0015] Optionally, the locking structure includes a plurality of notches and limiting tubes distributed in an annular shape, wherein the notches are arranged at the ends of the sleeves with a larger outer diameter, and a rotatable pressing block is installed in each of the notches;

[0016] The limiting pipe sleeve is arranged on the sleeve with a large outer diameter and is threadedly connected to the sleeve;

[0017] Wherein, after the position limiting tube rotates and moves, the position limiting tube can simultaneously push all the pressing blocks to rotate and simultaneously press the sleeve with a small outer diameter.

[0018] Optionally, an anti-slip structure is provided on the outer wall of the limiting tube.

[0019] Optionally, the portion where the pressing block presses the sleeve is an arc-shaped structure.

[0020] Optionally, a sleeve with a maximum outer diameter of the telescopic rod is fixedly connected to the detection host.

[0021] Compared with the prior art, the beneficial effects of this application are:

[0022] The VOC detection device provided by the present application is provided with a handheld detection host and a probe rod. The probe rod includes a telescopic rod with a hollow structure. A hose with a spiral structure is provided inside the telescopic rod. One end of the hose is connected to the air inlet of the detection host through an air guide tube. The other end of the hose is connected to an air suction head, and the air suction head is installed at one end of the telescopic rod. When in use, after adjusting the telescopic rod to an appropriate length, the air suction head can be extended to certain narrow or tricky locations by holding the telescopic rod to perform air suction, thereby facilitating the detection of VOC gas concentration in certain narrow or tricky locations, thereby improving the detection effect of the entire detection area. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of the VOC detection device provided in an embodiment of the present application after the telescopic rod is extended;

[0025] Figure 2 A schematic diagram of the front cross-sectional structure of a telescopic rod of a VOC detection device provided in an embodiment of the present application;

[0026] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of region A;

[0027] Figure 4 for Figure 2 Schematic diagram of the enlarged structure of region B;

[0028] Figure 5 A schematic diagram of a partial top view of the telescopic rod of a VOC detection device provided in an embodiment of the present application;

[0029] Figure 6 This is a schematic diagram of the side view structure of the VOC detection device provided in an embodiment of the present application after the telescopic rod is locked shorter.

[0030] Description of reference numerals: detection host 1, probe rod 2, hose 3, air guide tube 4;

[0031] Telescopic rod 5, sleeve 51, locking structure 52, notch 53, limiting tube 54, pressing block 55, anti-slip structure 56;

[0032] Suction head 6, mounting tube 61, suction tube 62, pressing ring 63, air inlet 64, filter screen 65;

[0033] Mounting seat 7. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are 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 ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0035] like Figure 1-Figure 6 As shown:

[0036] A VOC detection device provided in an embodiment of the present application includes a handheld detection host 1 and a probe rod 2. The probe rod 2 includes a telescopic rod 5 with a hollow structure, and a hose 3 with a spiral structure is provided inside the telescopic rod 5.

[0037] One end of the hose 3 is connected to the air inlet of the detection host 1 through the air guide tube 4. Specifically, one end of the air guide tube 4 is connected to one end of the hose 3, and the other end of the air guide tube 4 is connected to the air inlet of the detection host 1.

[0038] The other end of the hose 3 is connected with an air suction head 6, which is used to suck air at the detection position. The air suction head 6 is installed at one end of the telescopic rod 5.

[0039] In this embodiment, the detection host 1 used by the VOC detection device is a prior art and will not be described in detail.

[0040] When in use, first adjust the length of the telescopic rod 5 according to different detection positions, then the staff holds the detection host 1 and the telescopic rod 5, extends the suction head 6 to the designated detection position, and starts the detection host 1. The detection host 1 sucks the air at the detection position into the interior through the air duct 4, the hose 3 and the suction head 6. The detection host 1 detects the VOC gas concentration in the air. After the detection is completed, the display screen of the detection host 1 displays the detection value.

[0041] The VOC detection device provided in this embodiment is provided with a handheld detection host 1 and a probe rod 2. The probe rod 2 includes a telescopic rod 5 with a hollow structure. A hose 3 with a spiral structure is provided inside the telescopic rod 5. One end of the hose 3 is connected to the air inlet of the detection host 1 through an air guide tube 4. The other end of the hose 3 is connected to an air suction head 6, and the air suction head 6 is installed at one end of the telescopic rod 5. After the telescopic rod 5 is adjusted to a suitable length, the telescopic rod 5 can be held by hand to extend the air suction head 6 to certain narrow or tricky positions for air suction, thereby facilitating the detection of VOC gas concentrations in certain narrow or tricky positions, thereby improving the detection effect of the entire detection area. Moreover, after the telescopic rod 5 is extended, the staff can perform detection work at a higher detection position while standing on the ground, which has a wide range of applicability.

[0042] In some embodiments of the present application, a filter 65 for filtering dust is fixed inside the suction head 6 to filter dust and impurities in the air to be detected, so as to improve the accuracy of detection.

[0043] In some embodiments of the present application, the suction head 6 includes a mounting tube 61 and a suction tube 62 both of which are open at one end, and the open end of the suction tube 62 is sleeved on the open end of the mounting tube 61 and is threadedly connected to the mounting tube 61.

[0044] In this embodiment, the installation cylinder 61 is open at the upper end, and the suction cylinder 62 is open at the lower end. The upper outer wall of the installation cylinder 61 is provided with an external thread structure, and the inner wall of the suction cylinder 62 is provided with an internal thread structure, and the external thread structure is meshed and connected with the internal thread structure.

[0045] A pressure ring 63 is fixed inside the suction cylinder 62. Specifically, the outer wall of the pressure ring 63 is sealed and welded to the inner wall of the suction cylinder 62. The suction cylinder 62 is provided with a plurality of air inlet holes 64 located above the pressure ring 63. The plurality of air inlet holes 64 can intercept larger impurities while ensuring smooth air suction, and prevent these larger impurities from entering the suction cylinder 62 and clogging the absorption cylinder.

[0046] The filter screen 65 can be tightly pressed between the open end of the installation tube 61 and the pressing ring 63 .

[0047] The installation tube 61 is fixedly connected to one end of the telescopic rod 5, and the other end of the hose 3 is communicated with the installation tube 61. Specifically, the other end of the hose 3 passes through the closed end of the installation tube 61 and is sealed and fixedly connected with the closed end.

[0048] When installing the filter 65, first place the filter 65 on the upper end of the installation cylinder 61, then align the suction cylinder 62 with the upper end of the installation cylinder 61, rotate the suction cylinder 62 to engage the internal thread structure with the external thread structure, and when the filter 65 is pressed tightly between the pressure ring 63 and the upper end of the installation cylinder 61, stop the rotation of the suction cylinder 62; when replacing the filter 65, just screw it on the suction cylinder 62, remove the suction cylinder 62 from the installation cylinder 61 to take out the filter 65, thereby facilitating the disassembly and assembly of the filter 65.

[0049] In some embodiments of the present application, the telescopic rod 5 includes sleeves 51 , the number of the sleeves 51 is not less than three and they are distributed along the same axis, and two adjacent sleeves 51 are sleeved on each other and can slide along the axial direction.

[0050] Among two adjacent sleeves 51 , a locking structure 52 is installed on the sleeve 51 with a larger outer diameter, and the locking structure 52 can press tightly against the outer wall of the sleeve 51 with a smaller outer diameter, so as to lock the two adjacent sleeves 51 .

[0051] The mounting tube 61 is fixed to the end of the sleeve 51 with the smallest outer diameter of the telescopic rod 5 .

[0052] In this embodiment, the number of the sleeves 51 is three.

[0053] When adjusting the length of the telescopic rod 5, first operate the locking structure 52 to release the tight pressure of the locking structure 52 on the small outer diameter sleeve 51, then allow the two adjacent sleeves 51 to slide relatively to adjust the length of the telescopic rod 5. After the length adjustment is completed, operate the locking structure 52 again to allow the locking structure 52 to press the small outer diameter sleeve 51, so that the two adjacent sleeves 51 are fixed together, thereby achieving the locking work of the two adjacent sleeves 51.

[0054] In some embodiments of the present application, the locking structure 52 includes a plurality of notches 53 and a limiting tube 54 distributed in a ring shape. The notches 53 are arranged at the end of the sleeve 51 with a large outer diameter. A rotatable pressing block 55 is installed in each notch 53 .

[0055] The limiting tube 54 is sleeved on the sleeve 51 with a large outer diameter and threadedly connected with the sleeve 51. Specifically, the inner wall of the limiting tube 54 is provided with an internal thread structure, and the sleeve 51 with a large outer diameter is provided with an external thread structure, and the internal thread structure and the external thread structure are meshed and connected.

[0056] After the position-limiting tube 54 rotates and moves, the position-limiting tube 54 can simultaneously push all the pressing blocks 55 to rotate and simultaneously press the sleeve 51 with a small outer diameter.

[0057] In this embodiment, the lower end of the pressing block 55 is rotatably connected to the notch 53 via an installation shaft, and one end of the pressing block 55 is provided with a slope structure. After the inner upper edge of the limiting tube 54 contacts and moves upward, it can contact the slope structure of the pressing block 55, and after the pressing block 55 presses the sleeve 51 with a small outer diameter, the pressing block 55 is distributed obliquely.

[0058] When two adjacent sleeves 51 are locked, the limiting tube 54 is rotated to move the limiting tube 54 upward. While the limiting tube 54 moves upward, the limiting tube 54 pushes the inclined structure of all the pressing blocks 55, so that all the pressing blocks 55 rotate toward the sleeve 51 with a smaller outer diameter at the same time. When all the pressing blocks 55 rotate and press the sleeve 51 with a smaller outer diameter, the rotation of the limiting tube 54 is stopped. At this time, the limiting tube 54 presses all the pressing blocks 55 to limit the pressing blocks 55. All the pressing blocks 55 press the sleeve 51 with a smaller outer diameter at the same time, thereby fixing the two adjacent sleeves 51 together, thereby realizing the locking of the two adjacent sleeves 51. When unlocking, the limiting tube 54 is rotated to move the limiting tube 54 downward. After the limiting tube 54 moves downward a certain distance, the pressing block 55 no longer presses the sleeve 51 with a smaller outer diameter. At this time, the two adjacent sleeves 51 can slide relative to each other to adjust the length of the telescopic rod 5. Therefore, it is only necessary to rotate the limiting tube 54 to achieve the locking and unlocking work between the two adjacent sleeves 51, which has the effect of convenient operation. Moreover, multiple pressing blocks 55 press the sleeves 51 at the same time, which can improve the stability between the two adjacent sleeves 51 after locking.

[0059] In some embodiments of the present application, an anti-slip structure 56 is provided on the outer wall of the limiting tube 54 to facilitate the staff to rotate the limiting tube 54 .

[0060] In some embodiments of the present application, the portion where the pressing block 55 presses the sleeve 51 is an arc-shaped structure, which is used to increase the contact area between the pressing block 55 and the sleeve 51 to improve the effect of pressing the sleeve 51.

[0061] In some embodiments of the present application, the sleeve 51 with the largest outer diameter of the telescopic rod 5 is fixedly connected to the detection host 1. Specifically, the sleeve 51 with the largest outer diameter is fixed with a mounting seat 7, and the mounting seat 7 is fixedly connected to the rear end of the detection host 1.

[0062] In this embodiment, after the detection host 1 is fixed on the telescopic rod 5, when in use, the detection host 1 and the telescopic rod 5 can be held by one hand at the same time, thereby improving the convenience of detection.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A VOC detection device, comprising a handheld detection host (1) and a probe (2), characterized in that: The probe rod (2) comprises a telescopic rod (5) with a hollow structure, and a hose (3) with a spiral structure is arranged inside the telescopic rod (5); One end of the hose (3) is connected to the air inlet of the detection host (1) through an air guide tube (4), and the other end of the hose (3) is connected to an air suction head (66), and the air suction head (66) is installed on one end of the telescopic rod (5).

2. The VOC detection device according to claim 1, characterized in that: A filter screen (65) for filtering dust is fixed inside the suction head (66).

3. The VOC detection device according to claim 2, characterized in that: The suction head (66) comprises a mounting tube (61) and a suction tube (62) both of which are open at one end, wherein the open end of the suction tube (62) is sleeved on the open end of the mounting tube (61) and is threadedly connected to the mounting tube (61); A pressure ring (63) is fixed inside the air suction cylinder (62), and a plurality of air inlet holes (64) located above the pressure ring (63) are opened on the air suction cylinder (62); The filter screen (65) can be tightly pressed between the upper end of the mounting cylinder (61) and the pressing ring (63); The mounting tube (61) is fixedly connected to one end of the telescopic rod (5), and the other end of the hose (3) is in communication with the mounting tube (61).

4. The VOC detection device according to claim 3, characterized in that: The telescopic rod (5) comprises a sleeve (51), the number of the sleeves (51) is not less than three and they are distributed along the same axis, and two adjacent sleeves (51) are sleeved on each other and can slide along the axial direction; Among two adjacent sleeves (51), a locking structure (52) is installed on the sleeve (51) with a larger outer diameter, and the locking structure (52) can press tightly against the outer wall of the sleeve (51) with a smaller outer diameter, so as to lock the two adjacent sleeves (51); The mounting tube (61) is mounted on the end of the sleeve (51) with the smallest outer diameter of the telescopic rod (5).

5. The VOC detection device according to claim 4, characterized in that: The locking structure (52) comprises a plurality of notches (53) distributed in an annular shape and a limiting tube (54); the notches (53) are arranged at the end of the sleeve (51) with a large outer diameter, and a rotatable pressing block (55) is installed in each notch (53); The limiting tube (54) is sleeved on a sleeve (51) with a large outer diameter and is threadedly connected to the sleeve (51); After the position limiting tube (54) rotates and moves, the position limiting tube (54) can simultaneously push all the pressing blocks (55) to rotate and simultaneously press the sleeve (51) with a small outer diameter.

6. The VOC detection device according to claim 5, characterized in that: An anti-slip structure (56) is provided on the outer wall of the position limiting tube (54).

7. The VOC detection device according to claim 5, characterized in that: The portion where the pressing block (55) presses the sleeve (51) is an arc-shaped structure.

8. The VOC detection device according to any one of claims 4 to 7, characterized in that: The sleeve (51) with the largest outer diameter of the telescopic rod (5) is fixedly connected to the detection host (1).

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