VOC (volatile organic compound) detection equipment with gas inlet and detachable closed structure

Abstract

The utility model relates to VOC (volatile organic compound) detection equipment with an air inlet detachable closed structure, which comprises a detector connected with an air inlet pipe and a plugging component, and is characterized in that the plugging component comprises a rubber plug and a fixing structure, one end of the rubber plug facing the air inlet pipe is inserted into the air inlet pipe, and the other end of the rubber plug is fixed on the fixing structure. The end, opposite to the air inlet pipe, of the rubber plug is connected to the inner middle of the fixing structure, and the rubber plug is clamped and fixed to the end of the air inlet pipe through the fixing structure. Through cooperative arrangement of the plugging assembly and the air inlet pipe, when the detector is not used for VOC detection, the end part of the air inlet pipe can be tightly plugged and sealed by using the plugging assembly, so that dust and impurities are prevented from entering the air inlet pipe and accumulating on the inner wall of the air inlet pipe; and the plugging assembly can be installed and placed at the end of the air inlet pipe more smoothly, and the situation that plugging and pulling are difficult when the air inlet pipe is plugged only through an elastic body is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of VOC detectors, in particular to a VOC detection device with a detachable closed structure of an air inlet. Background Art

[0002] VOC detection equipment is used to continuously measure toxic and harmful organic VOC gases in dangerous or industrial environments. During detection, VOC gas enters the detection equipment from the air intake port of the detection equipment. When the VOC detection equipment is not working, there is no obstruction in the air intake pipe used for air intake, and it is easier for debris to enter the port, which will affect the normal use of the VOC equipment next time.

[0003] In order to solve the above problems, a VOC detection device with a detachable closed structure for an air inlet is proposed in a utility model patent such as Chinese patent publication number CN216696219U. When the VOC device is not in use, the inlet plug is inserted into the air inlet pipe to prevent debris from entering the air inlet.

[0004] However, in order to adapt to the inner diameter of the intake pipe and seal it, the inlet plug used needs to be made of elastic materials such as elastic rubber. When the inlet plug and the inner diameter of the intake pipe are closely matched, it is more difficult to insert the inlet plug into the intake pipe or to pull it out from the intake pipe port; when the inlet plug and the inner diameter of the intake pipe are poorly matched, there will be a gap between the inlet plug and the inner wall of the intake pipe, resulting in poor sealing effect of the inlet plug on the intake pipe. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The utility model provides a VOC detection device with a detachable closed structure for an air inlet, which solves the problem that when the inlet plug is closely matched with the inner diameter of the air inlet pipe, it is relatively difficult to insert the inlet plug into the air inlet pipe or to pull it out from the port of the air inlet pipe; when the inlet plug is poorly matched with the inner diameter of the air inlet pipe, a gap will be formed between the inlet plug and the inner wall of the air inlet pipe, resulting in a poor sealing effect of the inlet plug on the air inlet pipe.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a VOC detection device with a detachable closed structure for an air inlet, comprising a detector connected to an air inlet pipe and a sealing component, characterized in that the sealing component comprises a rubber plug and a fixing structure, the rubber plug is inserted into the air inlet pipe toward one end of the air inlet pipe, the end of the rubber plug facing away from the air inlet pipe is connected to the inner middle part of the fixing structure, and the rubber plug is clamped and fixed to the end of the air inlet pipe by using the fixing structure.

[0009] Among them, the fixed structure includes a guide member, several groups of clamping members and an operating member. The guide member is bonded and fixed to the rubber plug on the side facing the rubber plug. Several groups of clamping members are evenly surrounded by the outer side of the guide member and are slidably connected thereto. The operating member is connected and arranged on the side of the guide member facing away from the rubber plug, and the operating member drives and connects several groups of clamping members respectively. The operating member adjusts the position state of each group of clamping members so that several groups of clamping members press the rubber plug against the end of the intake pipe.

[0010] Preferably, the guide member includes a connecting frame, a number of guide grooves equal to the number of the abutting members, and a positioning shaft. The connecting frame is bonded and fixed to the rubber plug on the side facing the rubber plug. Several groups of guide grooves are provided on the outer wall of the connecting frame and are evenly distributed along the radial direction of the positioning shaft. The positioning shaft is fixed at the center of the side of the connecting frame facing away from the rubber plug. The guide member also includes a spring and a clamping block. A movable groove is formed at one end of the positioning shaft facing away from the connecting frame. The spring and the clamping block are both arranged in the movable groove. The two ends of the spring are fixedly connected to the clamping block and the inner wall of the movable groove respectively.

[0011] It is further preferred that the clamping member includes an arc plate, a sliding frame and a lever, the sliding frame is fixedly connected to the inner wall of the arc plate, and the sliding frame is slidably connected to the adjacent guide groove, and the lever is fixedly connected to the top of the sliding frame and movably connected to the operating member.

[0012] In a further embodiment, the operating member includes an adjusting disk, a number of positioning grooves equal to the number of the abutting members, and a sleeve, the sleeve is fixedly connected to the middle of the adjusting disk, the sleeve is sleeved on the outside of the positioning shaft and is rotatably connected thereto, a plurality of groups of positioning grooves are uniformly formed on the adjusting disk along the radial direction of the sleeve, and each group of positioning grooves is penetrated by a group of levers. A groove matching the block is formed on the inner wall of the sleeve.

[0013] It is further preferred that the rubber plug includes an insertion section and an outer sleeve section, the insertion section is formed on the inner side of the outer sleeve section, and the insertion section is inserted into the intake pipe toward one end of the intake pipe, and the outer sleeve section is covered on the outer wall of the intake pipe and covers its end.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a VOC detection device with a detachable closed structure of the air inlet, which has the following beneficial effects:

[0016] 1. In the utility model, by coordinating the sealing component with the air intake pipe, when the detector is not used for VOC detection, the end of the air intake pipe can be sealed more tightly by using the sealing component, thereby preventing dust and impurities from entering the air intake pipe and accumulating on the inner wall of the air intake pipe, and the installation and placement of the sealing component at the end of the air intake pipe can be operated more smoothly, avoiding the difficult plugging and unplugging of the air intake pipe when only using an elastomer to plug the air intake pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a VOC detection device with a detachable air inlet sealing structure according to an implementation scheme;

[0018] Figure 2 is a schematic structural diagram of a plugging assembly according to an implementation scheme;

[0019] Figure 3 is a schematic structural diagram of a rubber stopper according to an embodiment;

[0020] Figure 4 is a structural schematic diagram of a fixing structure according to an embodiment of the present invention;

[0021] Figure 5 for Figure 4 A schematic diagram of the structure of the fixed structure at another angle;

[0022] Figure 6 is a schematic structural diagram of a guide member according to an implementation scheme;

[0023] Figure 7 is a schematic structural diagram of a fastening member according to an embodiment of the present invention;

[0024] Figure 8 Schematic diagram of the structure of the operating part according to the implementation scheme.

[0025] In the figure: 10, detector; 11, air inlet pipe; 20, plugging assembly; 21, rubber plug; 211, insertion section; 212, outer sleeve section; 22, fixing structure; 221, guide member; 2211, connecting frame; 2212, guide groove; 2213, positioning shaft; 2214, spring; 2215, block; 222, pressing member; 2221, arc plate; 2222, sliding frame; 2223, lever; 223, operating member; 2231, adjusting disk; 2232, positioning groove; 2233, sleeve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1 and Figure 2 , a VOC detection device with a detachable closed structure for an air inlet, comprising a detector 10 connected to an air inlet pipe 11 and a blocking component 20. The detector 10 uses the gas flowing in from the air inlet pipe 11 for detection, and a display screen is provided on the front of the detector 10 for displaying detection data; and an operation button is also provided on the front of the detector 10 for controlling the detection use of the detector 10. The blocking component 20 comprises a rubber plug 21 and a fixing structure 22. The rubber plug 21 is inserted into the air inlet pipe 11 at one end facing the air inlet pipe 11, and the end of the rubber plug 21 facing away from the air inlet pipe 11 is connected to the inner middle part of the fixing structure 22. When the detector 10 is not used for detection, the rubber plug 21 can be clamped and fixed to the end of the air inlet pipe 11 by using the fixing structure 22 to block the air inlet pipe 11.

[0028] See also Figure 3 The rubber plug 21 includes an inserting section 211 and an outer sleeve section 212. The inserting section 211 is formed inside the outer sleeve section 212, and the two form an integral structure. The inserting section 211 is inserted into the intake pipe 11 toward one end of the intake pipe 11, and the outer sleeve section 212 is covered on the outer wall of the intake pipe 11 and covers its end. After the fixing structure 22 is used to press the outer sleeve section 212 against the outer wall of the intake pipe 11, the rubber plug 21 can block the end of the intake pipe 11.

[0029] See also Figure 4 and Figure 5 The fixed structure 22 includes a guide member 221, several groups of tightening members 222 (6 groups in the figure) and an operating member 223. The side of the guide member 221 facing the rubber plug 21 is bonded and fixed to the side of the outer sleeve section 212 in the rubber plug 21 facing the guide member 221, so that the fixed structure 22 and the rubber plug 21 are connected together, which is convenient for use and carrying. Several groups of tightening members 222 are evenly surrounded by the outer side of the guide member 221 and are slidably connected thereto. The operating member 223 is connected and arranged on the side of the guide member 221 facing away from the rubber plug 21, and the operating member 223 drives and connects several groups of tightening members 222 respectively. The user can use the operating member 223 to adjust the position state of each group of tightening members 222, and make several groups of tightening members 222 press the outer sleeve section 212 against the outer wall of the intake pipe 11.

[0030] See also Figure 6 The guide member 221 may include a connecting frame 2211, a number of guide grooves 2212 equal to the number of the abutting members 222, a positioning shaft 2213, a spring 2214 and a block 2215. The connecting frame 2211 is bonded and fixed to the rubber plug 21 on the side facing the rubber plug 21, so that the two are connected together. The positioning shaft 2213 is fixed at the center of the side of the connecting frame 2211 facing away from the rubber plug 21, and is used to cooperate with the operating member 223. Several groups of guide grooves 2212 are provided on the outer wall of the connecting frame 2211, and are evenly distributed along the radial direction of the positioning shaft 2213, so that they are used to guide the movement of each group of abutting members 222. A movable groove is formed at one end of the positioning shaft 2213 facing away from the connecting frame 2211, and the spring 2214 and the block 2215 are both arranged in the movable groove. The two ends of the spring 2214 are fixedly connected to the block 2215 and the inner wall of the movable groove respectively, and a hemispherical protrusion is formed on one side of the block 2215 facing the inner wall of the sleeve 2233 in the operating member 223, so that the block 2215 can be fixed in the limited position after adjustment of the sleeve 2233.

[0031] See also Figure 7 The pressing member 222 includes an arc plate 2221, a sliding frame 2222 and a lever 2223. The sliding frame 2222 is fixedly connected to the inner wall of the arc plate 2221, and the sliding frame 2222 is slidably connected to the adjacent guide groove 2212, so that the pressing member 222 can move along the length direction of the guide groove 2212. The lever 2223 is fixedly connected to the top of the sliding frame 2222 and is movably connected to the operating member 223, and cooperates with the operating member 223 to adjust the position of the pressing member 222. The arc plates 2221 in several groups of pressing members 222 can be surrounded into a circle after pressing the rubber plug 21.

[0032] See also Figure 8 The operating member 223 includes an adjusting disk 2231, positioning grooves 2232 of which the number is equal to the number of the abutting members 222, and a sleeve 2233. The sleeve 2233 is fixedly connected to the middle part of the adjusting disk 2231, and the sleeve 2233 is sleeved on the outer side of the positioning shaft 2213 and rotatably connected thereto, so that the operating member 223 can be deflected and adjusted on the outer side of the positioning shaft 2213. A groove matching with the block 2215 is formed on the inner wall of the sleeve 2233, so that the rotation of the sleeve 2233 can be limited when the block 2215 is inserted into the groove. Several groups of positioning grooves 2232 are uniformly formed on the adjusting disk 2231 along the radial direction of the sleeve 2233, and each group of positioning grooves 2232 is penetrated by a group of shifting rods 2223. The width of the positioning groove 2232 is matched with the diameter of the lever 2223. When the adjusting disk 2231 is deflected, the inner wall of the positioning groove 2232 can be used to push the lever 2223, and the guide groove 2212 can guide the sliding frame 2222, so that several groups of fastening members 222 can move inward or outward at the same time.

[0033] When the air intake pipe 11 needs to be blocked, the rubber plug 21 is inserted into the end of the air intake pipe 11, and then the block 2215 is pushed to compress the spring 2214 so that the block 2215 is separated from the inner wall of the sleeve 2233, and the adjusting disk 2231 can be pushed to deflect. When the adjusting disk 2231 deflects, it can drive several groups of abutting members 222 to move inward and press the outer sleeve section 212 against the outer wall of the air intake pipe 11. At this time, the block 2215 is released and the block 2215 is inserted into the groove on the inner wall of the sleeve 2233, thereby limiting the deflection of the operating member 223 and allowing the fixing structure 22 to abut the rubber plug 21 to block the air intake pipe 11.

[0034] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A VOC detection device with a detachable air inlet sealing structure, comprising a detector (10) connected to an air inlet pipe (11) and a blocking component (20), characterized in that: The plugging assembly (20) comprises a rubber plug (21) and a fixing structure (22), wherein the rubber plug (21) is inserted into the intake pipe (11) toward one end of the intake pipe (11), and the end of the rubber plug (21) facing away from the intake pipe (11) is connected to the inner middle part of the fixing structure (22), and the fixing structure (22) is used to clamp and fix the rubber plug (21) to the end of the intake pipe (11). The fixing structure (22) comprises a guide member (221), a plurality of groups of pressing members (222) and an operating member (223); the guide member (221) is bonded and fixed to the rubber plug (21) on the side facing the rubber plug (21); the plurality of groups of pressing members (222) are evenly surrounded by the outer side of the guide member (221) and are slidably connected thereto; the operating member (223) is connected and arranged on the side of the guide member (221) facing away from the rubber plug (21); and the operating member (223) is respectively driven to connect the plurality of groups of pressing members (222); the operating member (223) adjusts the position state of each group of pressing members (222) so that the plurality of groups of pressing members (222) press the rubber plug (21) against the end of the intake pipe (11).

2. A VOC detection device with a detachable air inlet sealing structure according to claim 1, characterized in that: The guide member (221) comprises a connecting frame (2211), a number of guide grooves (2212) equal to that of the abutting members (222), and a positioning shaft (2213); the connecting frame (2211) is bonded and fixed to the rubber plug (21) on the side facing the rubber plug (21); a plurality of groups of the guide grooves (2212) are formed on the outer wall of the connecting frame (2211) and are evenly distributed along the radial direction of the positioning shaft (2213); and the positioning shaft (2213) is fixed at the center of the side of the connecting frame (2211) facing away from the rubber plug (21).

3. A VOC detection device with a detachable air inlet sealing structure according to claim 2, characterized in that: The pressing member (222) comprises an arc-shaped plate (2221), a sliding frame (2222) and a lever (2223); the sliding frame (2222) is fixedly connected to the inner side wall of the arc-shaped plate (2221), and the sliding frame (2222) is slidably connected to the adjacent guide groove (2212); the lever (2223) is fixedly connected to the top of the sliding frame (2222) and movably connected to the operating member (223).

4. A VOC detection device with a detachable air inlet sealing structure according to claim 3, characterized in that: The operating member (223) comprises an adjusting disk (2231), positioning grooves (2232) whose number is equal to that of the pressing member (222), and a sleeve (2233); the sleeve (2233) is fixedly connected to the middle part of the adjusting disk (2231); the sleeve (2233) is sleeved on the outer side of the positioning shaft (2213) and is rotatably connected thereto; a plurality of groups of positioning grooves (2232) are uniformly formed on the adjusting disk (2231) along the radial direction of the sleeve (2233); and each group of positioning grooves (2232) is penetrated by a group of shifting rods (2223).

5. A VOC detection device with a detachable air inlet sealing structure according to claim 4, characterized in that: The guide member (221) further comprises a spring (2214) and a clamping block (2215); a movable groove is formed at one end of the positioning shaft (2213) facing away from the connecting frame (2211); the spring (2214) and the clamping block (2215) are both arranged in the movable groove; and the two ends of the spring (2214) are respectively fixedly connected to the clamping block (2215) and the inner wall of the movable groove.

6. A VOC detection device with a detachable air inlet sealing structure according to claim 5, characterized in that: A groove matching with the block (2215) is formed on the inner wall of the sleeve (2233).

7. A VOC detection device with a detachable air inlet sealing structure according to any one of claims 1 to 6, characterized in that: The rubber plug (21) comprises an insertion section (211) and an outer sleeve section (212); the insertion section (211) is formed on the inner side of the outer sleeve section (212), and the insertion section (211) is inserted into the air intake pipe (11) toward one end of the air intake pipe (11); the outer sleeve section (212) is sheathed on the outer wall of the air intake pipe (11) and covers the end thereof.

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