A self-suction handheld gas detector

Abstract

The utility model discloses a kind of self-suction handheld gas detector, it is related to gas detector technical field.The utility model includes detector body, the air inlet pipe is installed in detector body top, the first internal thread pipe is installed in detector body top and is located the air inlet pipe periphery, the first internal thread pipe top is threadedly installed with extension mechanism, and the extension mechanism includes extension rod, and the extension rod top is fixedly connected with second internal thread pipe.The utility model is directly screwed to the first internal thread pipe by dustproof installation mechanism when being detected normally, dustproof installation mechanism is connected by the mode of magnetic attraction with second magnetic ring, second magnetic ring is placed in dustproof installation mechanism top, dust screen will be fixed synchronously, external air will be filtered by dust screen before entering air inlet pipe, dust and impurities are blocked outside, to prevent dust and impurities in air from entering air inlet pipe, ensure that the air entering detector is clean.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas detectors, and specifically relates to a self-priming handheld gas detector. Background Technology

[0002] In many fields such as industrial production, environmental monitoring, and scientific research, self-priming handheld gas detectors have become indispensable tools due to their convenience and real-time detection capabilities. However, current self-priming handheld gas detectors have revealed some significant limitations in actual use.

[0003] Existing self-priming handheld gas detectors are mainly used by operators who hold the device. Due to the limitation of the operator's arm length, it is impossible to detect at high places or in places where it is inconvenient to stand. Moreover, in industrial production environments, there are often dust and impurities. When the detector is priming air for detection, these impurities will be drawn into the detector along with the air, which will affect the detector's sensitivity to the target gas, causing the detection data to be inaccurate and unable to accurately reflect the actual concentration of gas in the air.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a self-priming handheld gas detector to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a self-priming handheld gas detector, including a detector body, an air inlet pipe installed on the top of the detector body, a first internally threaded pipe installed on the top of the detector body and around the air inlet pipe, and an extension mechanism threadedly installed on the top of the first internally threaded pipe.

[0008] The extension mechanism includes an extension rod, and a second internally threaded tube is fixedly connected to the top of the extension rod;

[0009] The second internally threaded pipe is threaded with a dustproof mounting mechanism at its top, and a dustproof mechanism is mounted on the top of the dustproof mounting mechanism;

[0010] The dustproof mechanism includes a second magnetic ring, and a dustproof net is fixedly installed on the inner wall of the second magnetic ring;

[0011] The back of the detector body is fixedly connected to a storage mechanism, and limit mechanisms are installed on the left and right sides of the storage mechanism. A top cover mechanism is inserted into the top of the storage mechanism.

[0012] Furthermore, the dustproof installation mechanism includes an externally threaded tube, an installation tube fixedly connected to the top of the externally threaded tube, a connecting piece fixedly connected to the outer wall of the installation tube, and a slide rail symmetrically fixedly connected to the outside of the installation tube and above the connecting piece.

[0013] Furthermore, a circular block is slidably connected to the outer wall of the slide rail, the top of the circular block is flush with the second magnetic ring, an elastic element is installed between the circular block and the connecting piece, and a first magnetic ring is fixedly installed on the top of the mounting tube.

[0014] Furthermore, the storage mechanism includes a bottom shell, which is fixedly installed on the back of the detector body. A first sponge is fixedly connected inside the bottom shell, and the length of the first sponge is less than the length of the extension rod.

[0015] Furthermore, the first sponge has a placement hole inside, the diameter of which is larger than the diameter of the second internally threaded tube. The left and right ends of the bottom shell have threaded holes, and the top of the bottom shell has symmetrical slots.

[0016] Furthermore, the limiting mechanism includes a screw, and a rotating wheel is fixedly installed at one end of the screw.

[0017] Furthermore, the top cover mechanism includes a cover, the bottom of which is symmetrically fixedly connected with inserts, the inserts having through holes, and a second sponge fixedly connected inside the cover.

[0018] This utility model has the following beneficial effects:

[0019] This invention allows for the direct screwing of the dustproof mounting mechanism onto the first internal threaded pipe during routine testing. The dustproof mounting mechanism is connected to the second magnetic ring via magnetic attraction. Placing the second magnetic ring on top of the dustproof mounting mechanism simultaneously fixes the dustproof net. Before entering the air intake pipe, outside air is filtered through the dustproof net, blocking dust and impurities and preventing them from entering the air intake pipe, thus ensuring that the air entering the testing instrument is clean.

[0020] When testing areas that are high up or difficult to stand in, this invention first unscrews the dustproof mounting mechanism from the first internal threaded tube, then screws the extension rod to the top of the first internal threaded tube. If the length is insufficient, the bottom of the next extension rod can be screwed into the second internal threaded tube at the top of the previous extension rod until the target testing area can be reached. Finally, the dustproof mounting mechanism is screwed onto the second internal threaded tube of the top extension rod. The dustproof net can still filter impurities, thus enabling the detector to test the air in areas that are high up or difficult to stand in.

[0021] This invention allows you to insert the extension rod with the second internal threaded tube facing downwards into the bottom of the storage mechanism. After all the extension rods and the second internal threaded tubes are stored, insert the top cover mechanism into the top of the storage mechanism. Then, manually turn the limiting mechanisms on both sides to move them closer to the inner cavity of the storage mechanism, thereby limiting the two ends of the top cover mechanism to the top of the storage mechanism, thus completing the storage of all the extension rods and the second internal threaded tubes.

[0022] This invention allows workers to clean impurities from a dustproof screen by pulling a circular block downwards. A slide rail guides the block's movement, compressing an elastic element that stores elastic potential energy. The block then positions itself below the outer periphery of the second magnetic ring, exposing its outer ring. Pulling the outer ring applies external force, causing the second magnetic ring to disengage from the magnetic field of the first magnetic ring. This allows the second magnetic ring and the dustproof screen to be detached for easy cleaning.

[0023] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the back of the present invention;

[0027] Figure 3 This is a schematic diagram of the first partial structure of the present invention;

[0028] Figure 4 This is an overall structural diagram of the dustproof installation mechanism of this utility model;

[0029] Figure 5 This is a partial cross-sectional view of the circular block of this utility model;

[0030] Figure 6 This is an exploded view of the top cover mechanism of this utility model;

[0031] Figure 7 This is an overall structural diagram of the top cover mechanism of this utility model;

[0032] Figure 8 This is a structural diagram of the limiting mechanism of this utility model.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1. Detector body; 2. Air inlet pipe; 3. First internal threaded pipe; 4. Extension mechanism; 401. Extension rod; 402. Second internal threaded pipe; 5. Dustproof mounting mechanism; 501. External threaded pipe; 502. Mounting pipe; 503. Connecting piece; 504. Slide rail; 505. Round block; 506. Elastic element; 507. First magnetic ring; 6. Dustproof mechanism; 601. Second magnetic ring; 602. Dustproof net; 7. Storage mechanism; 701. Bottom shell; 702. First sponge; 703. Placement hole; 704. Threaded hole; 705. Slot; 8. Limiting mechanism; 801. Screw; 802. Rotary wheel; 9. Top cover mechanism; 901. Cover; 902. Insert; 903. Through hole; 904. Second sponge. Detailed Implementation

[0035] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0036] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0037] Please see Figures 1-8 As shown, this utility model is a self-priming handheld gas detector, including a detector body 1. An air inlet pipe 2 is installed on the top of the detector body 1. A first internal threaded pipe 3 is installed on the top of the detector body 1 and around the air inlet pipe 2. An extension mechanism 4 is threaded on the top of the first internal threaded pipe 3.

[0038] The extension mechanism 4 includes an extension rod 401, and a second internally threaded tube 402 is fixedly connected to the top of the extension rod 401.

[0039] The second internally threaded tube 402 is threaded with a dustproof mounting mechanism 5 at its top, and a dustproof mechanism 6 is mounted on the top of the dustproof mounting mechanism 5;

[0040] The dustproof mechanism 6 includes a second magnetic ring 601, and a dustproof net 602 is fixedly installed on the inner wall of the second magnetic ring 601.

[0041] The back of the detector body 1 is fixedly connected to a storage mechanism 7. Limiting mechanisms 8 are installed on the left and right sides of the storage mechanism 7, and a top cover mechanism 9 is inserted into the top of the storage mechanism 7.

[0042] During routine testing, to prevent impurities in the air from entering the air inlet pipe 2, the dustproof mounting mechanism 5 must first be screwed directly onto the first internal threaded pipe 3 at the top of the instrument body 1. The dustproof mounting mechanism 5 is connected to the second magnetic ring 601 by magnetic attraction. At this time, the second magnetic ring 601 is placed on top of the dustproof mounting mechanism 5, and the dustproof net 602 will be fixed simultaneously. Before entering the air inlet pipe 2, the outside air will be filtered by the dustproof net 602, and dust and impurities will be blocked. After the test is started, the outside air is filtered by the dustproof net 602, and the clean air enters the instrument body 1 (the instrument body 1 is existing technology, and its detection principle will not be described in detail here) through the dustproof mounting mechanism 5, the first internal threaded pipe 3 and the air inlet pipe 2 to complete the detection and analysis, thereby preventing dust and impurities in the air from entering the air inlet pipe 2 and ensuring that the air entering the instrument is clean.

[0043] When it is necessary to test areas at high altitudes or in areas where it is inconvenient to stand, first unscrew the dustproof mounting mechanism 5 from the first internal threaded tube 3. The extension rod 401 has threads on its bottom outer wall. Then screw the extension rod 401 to the top of the first internal threaded tube 3. If the length is not enough, the bottom of the next extension rod 401 can be screwed into the second internal threaded tube 402 at the top of the previous extension rod 401 until the target detection area can be reached. Finally, screw the dustproof mounting mechanism 5 onto the second internal threaded tube 402 of the top extension rod 401. The dustproof net 602 can still filter impurities, thus enabling the detector to test the air in areas at high altitudes or inconvenient to stand. Since the extension rod 401 and the second internal threaded tube 402 have their own gravity, it is recommended to connect 1 to 3 extension mechanisms 4 in series to ensure the stability after extension.

[0044] After using the extension mechanism 4, each extension rod 401 needs to be disassembled. When storing, hold the extension rod 401 with the second internal thread tube 402 facing down and insert it into the bottom of the inner cavity of the storage mechanism 7. After all the extension rods 401 and the second internal thread tube 402 are stored, insert the top cover mechanism 9 into the top of the storage mechanism 7, and then turn the limiting mechanisms 8 on both sides by hand to move them closer to the inner cavity of the storage mechanism 7, thereby limiting the two ends of the top cover mechanism 9 to the top of the storage mechanism 7. This completes the storage of all the extension rods 401 and the second internal thread tube 402. The dustproof installation mechanism 5 is then screwed back onto the first internal thread tube 3. When not in use, the air intake pipe 2 can be dustproofed to prevent air impurities from entering the air intake pipe 2.

[0045] In one embodiment, the dustproof installation mechanism 5 includes an externally threaded tube 501, an installation tube 502 fixedly connected to the top of the externally threaded tube 501, a connecting piece 503 fixedly connected to the outer wall of the installation tube 502, and a slide rail 504 symmetrically fixedly connected to the outer wall of the installation tube 502 and above the connecting piece 503.

[0046] A circular block 505 is slidably connected to the outer wall of the slide rail 504. The top of the circular block 505 is flush with the second magnetic ring 601. An elastic element 506 is installed between the circular block 505 and the connecting piece 503. A first magnetic ring 507 is fixedly installed on the top of the mounting tube 502.

[0047] In the initial state, the circular block 505 is positioned at the top under the support of the elastic element 506 (preferably a spring). The top of the elastic element 506 is fixedly installed with the circular block 505, and the bottom of the elastic element 506 is fixedly installed with the connecting piece 503. At this time, the top of the circular block 505 is flush with the top of the second magnetic ring 601. When it is necessary to clean the impurities on the dustproof net 602, the second magnetic ring 601 needs to be removed from the first magnetic ring 507. The operator pulls the circular block 505 downwards by hand, and the slide rail... 504 provides guidance for the movement of the circular block 505, and then the circular block 505 compresses the elastic element 506. The elastic element 506 stores elastic potential energy. At this time, the circular block 505 will be located below the outer periphery of the second magnetic ring 601, and the outer ring of the second magnetic ring 601 will be exposed. Pulling the outer ring of the second magnetic ring 601 applies an external force to make the second magnetic ring 601 break away from the magnetic force range of the first magnetic ring 507, and then the second magnetic ring 601 and the dustproof net 602 can be disassembled for easy cleaning of the dustproof net 602.

[0048] After cleaning is complete, the cleaned dustproof net 602 needs to be installed. The staff will pull the round block 505 down by hand. The round block 505 will be located below the outer periphery of the second magnetic ring 601. Then, the second magnetic ring 601 will be brought close to the top of the installation tube 502. The first magnetic ring 507 will generate a magnetic force with the second magnetic ring 601 and attract each other. The second magnetic ring 601 will move closer to the first magnetic ring 507. As the second magnetic ring 601 and the first magnetic ring 507 are attracted and attached, the installation of the dustproof net 602 is completed. Then, the round block 505 is released, and the elastic element 506 releases the stored elastic potential energy, pushing the round block 505 to slide upward along the slide rail 504 to reset and return to the initial position at the top, flush with the second magnetic ring 601.

[0049] In one embodiment, the storage mechanism 7 includes a bottom shell 701, which is fixedly installed on the back of the detector body 1. A first sponge 702 is fixedly connected inside the bottom shell 701, and the length of the first sponge 702 is less than the length of the extension rod 401.

[0050] The first sponge 702 has several placement holes 703 inside, the diameter of the placement holes 703 is larger than the diameter of the second internal threaded tube 402, the bottom shell 701 has threaded holes 704 at both ends, and the bottom shell 701 has slots 705 symmetrically formed on the top.

[0051] The limiting mechanism 8 includes a screw 801, and a rotating wheel 802 is fixedly installed at one end of the screw 801.

[0052] The top cover mechanism includes a cover 901, with inserts 902 symmetrically fixedly connected to the bottom of the cover 901. The inserts 902 have through holes 903, and a second sponge 904 is fixedly connected inside the cover 901.

[0053] The first sponge 702 fixed inside the bottom shell 701 has elasticity and cushioning properties. Several placement holes 703 opened inside the first sponge 702 are used to place the extension rod 401 and the second internal threaded tube 402. Since the diameter of the placement hole 703 is larger than the diameter of the second internal threaded tube 402, it can provide a space for the second internal threaded tube 402. The length of the first sponge 702 is less than the length of the extension rod 401, so that when the operator holds the extension rod 401 with the second internal threaded tube 402 facing down and inserts it into the placement hole 703, part of the extension rod 401 is above the first sponge 702, avoiding complete sinking and inconvenience in picking up and putting down.

[0054] When it is necessary to close the storage space, insert the two tabs 902 at the bottom of the cover 901 into the slots 705 of the bottom shell 701. After the tabs 902 are inserted into the slots 705, the through holes 903 on the tabs 902 correspond to the threaded holes 704 at both ends of the bottom shell 701. The operator manually rotates the wheel 802 to drive the screw 801 to rotate. The screw 801 gradually passes through the threaded holes 704 of the bottom shell 701 and extends into the tabs 902 through the threaded engagement with the threaded holes 704. As the screw 801 is screwed into the through hole 903, it creates a vertical limiting effect on the insert 902, firmly fixing the cover 901 to the bottom shell 701. After the cover 901 is closed, the second sponge 904 fixed inside the cover 901 contacts the top of the extension rod 401 placed in the placement hole 703, preventing the extension rod 401 and the second internal threaded tube 402 from moving up and down, thereby completing the storage of the extension rod 401 and the second internal threaded tube 402.

[0055] Working principle: During routine testing, the dustproof installation mechanism 5 is screwed onto the first internal threaded tube 3. The round block 505 is pulled down by hand, and then the second magnetic ring 601 is brought close to the top of the installation tube 502. The second magnetic ring 601 and the first magnetic ring 507 are attracted and adhered, and the installation of the dustproof net 602 is completed. The round block 505 is released, and the elastic element 506 releases elastic potential energy, pushing the round block 505 back to the initial position where it is flush with the second magnetic ring 601. Thus, the dustproof net 602 is fixed on the air intake path of the air intake pipe 2. At this time, the outside air will be filtered by the dustproof net 602 before entering the air intake pipe 2.

[0056] If the dustproof net 602 needs to be cleaned, the worker pulls down the round block 505. The round block 505 slides down along the slide rail 504 and compresses the elastic element 506, exposing the outer ring of the second magnetic ring 601. External force is applied to make it break away from the magnetic range of the first magnetic ring 507. After disassembly and cleaning, the above operation of pulling the round block 505 is repeated during installation. After the second magnetic ring 601 and the first magnetic ring 507 are attracted and adhered, the round block 505 is released, and the elastic element 506 pushes the round block 505 to reset.

[0057] When it is necessary to inspect areas at high altitudes or inconvenient to stand, first unscrew the dustproof installation mechanism 5 from the first internal threaded tube 3, and then screw the extension rod 401 into the top of the first internal threaded tube 3 through the bottom outer wall thread. If the length is insufficient, the bottom of the next extension rod 401 can be screwed into the second internal threaded tube 402 at the top of the previous extension rod 401. After the extension is completed, screw the dustproof installation mechanism 5 onto the second internal threaded tube 402 of the top extension rod 401. The dustproof net 602 still filters impurities.

[0058] After using the extension mechanism 4, first disassemble each extension rod 401, then hold the extension rod 401 with the second internal thread tube 402 facing down, align it with the placement hole 703 and insert it. Then insert the cover 901 into the slot 705 through the bottom insert 902. At this time, the through hole 903 of the insert 902 is aligned with the threaded hole 704, and the second sponge 904 inside the cover 901 contacts the top of the extension rod 401. Rotate the wheel 802 to drive the screw 801 to screw into the threaded hole 704 and pass through the through hole 903, forming a vertical limit on the insert 902 and firmly fixing the cover 901, thus completing the storage of all extension rods 401 and the second internal thread tube 402.

[0059] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0060] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A self-priming handheld gas detector, comprising a detector body (1), wherein an air inlet pipe (2) is installed on the top of the detector body (1), characterized in that: The detector body (1) is topped with a first internal threaded pipe (3) located around the air inlet pipe (2), and an extension mechanism (4) is threaded onto the top of the first internal threaded pipe (3). The extension mechanism (4) includes an extension rod (401), and a second internally threaded tube (402) is fixedly connected to the top of the extension rod (401). The second internally threaded tube (402) is threaded with a dustproof mounting mechanism (5) at the top, and a dustproof mechanism (6) is mounted on the top of the dustproof mounting mechanism (5). The dustproof mechanism (6) includes a second magnetic ring (601), and a dustproof net (602) is fixedly installed on the inner wall of the second magnetic ring (601). The back of the detector body (1) is fixedly connected to a storage mechanism (7), and a limiting mechanism (8) is installed on the left and right sides of the storage mechanism (7). A top cover mechanism (9) is inserted into the top of the storage mechanism (7).

2. The self-priming handheld gas detector according to claim 1, characterized in that, The dustproof installation mechanism (5) includes an external threaded tube (501), an installation tube (502) fixedly connected to the top of the external threaded tube (501), a connecting piece (503) fixedly connected to the outer wall of the installation tube (502), and a slide rail (504) symmetrically fixedly connected to the outer wall of the installation tube (502) and above the connecting piece (503).

3. The self-priming handheld gas detector according to claim 2, characterized in that, A circular block (505) is slidably connected to the outer wall of the slide rail (504). The top of the circular block (505) is flush with the second magnetic ring (601). An elastic element (506) is installed between the circular block (505) and the connecting piece (503). A first magnetic ring (507) is fixedly installed on the top of the mounting tube (502).

4. A self-priming handheld gas detector according to claim 1, characterized in that, The storage mechanism (7) includes a bottom shell (701), which is fixedly installed on the back of the detector body (1). A first sponge (702) is fixedly connected inside the bottom shell (701), and the length of the first sponge (702) is less than the length of the extension rod (401).

5. A self-priming handheld gas detector according to claim 4, characterized in that, The first sponge (702) has several placement holes (703) inside, the diameter of the placement holes (703) is larger than the diameter of the second internal threaded tube (402), the bottom shell (701) has threaded holes (704) at both ends, and the bottom shell (701) has slots (705) symmetrically opened on the top.

6. A self-priming handheld gas detector according to claim 1, characterized in that, The limiting mechanism (8) includes a screw (801), and a rotating wheel (802) is fixedly installed at one end of the screw (801).

7. A self-priming handheld gas detector according to claim 1, characterized in that, The top cover mechanism includes a cover (901), and inserts (902) are symmetrically fixedly connected to the bottom of the cover (901). Through holes (903) are opened on the inserts (902), and a second sponge (904) is fixedly connected inside the cover (901).

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