Sealing structure for volatile organic compound detection device

Abstract

The utility model discloses a sealing structure for a volatile organic compound detection device, belongs to the technical field of sealing structures, and aims to solve the problems that the existing sealing structure is easy to loosen after being used for a long time, so that the volatile organic compound leaks during detection, and the body health of detection personnel is influenced. Leaked gas can be collected through the gas bag, the second pressure sensor sends out a primary alarm to the moving end when the gas bag expands, at the moment, the gear rotates forwards and backwards by a small angle through the motor, the internal thread connector and the connecting pipe can be fastened again, and if gas continues to leak, the gas bag expands to extrude the first pressure sensor; according to the volatile organic compound detection device, when the volatile organic compound detection device leaks, leaked gas can be collected, the health of detection personnel is prevented from being damaged, meanwhile, leakage can be sealed again, different alarm prompts can be given out under different leakage conditions, and the detection efficiency is improved. And a worker can know the situation conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing structures, in particular to a sealing structure for a volatile organic matter detection device. Background Art

[0002] Volatile organic compounds refer to organic compounds that have the characteristics of high saturated vapor pressure, low boiling point, and small molecular weight under standard conditions, and are easy to volatilize at room temperature. This type of substance is one of the main pollutants in the atmosphere and also poses certain hazards to the human body. When using existing volatile organic compound detection devices, it is necessary to pass the collected sample gas into the detection device. Usually, a pipe joint is used to connect the air inlet pipe of the detection device and the sample air outlet pipe. When the pipe joint is used for a long time, it is easy to loosen, causing volatile organic compounds to leak during detection, affecting the health of the detection personnel. Utility Model Content

[0003] The utility model aims to provide a sealing structure for a volatile organic compound detection device. By adopting the device to work, the problem that the existing seal is prone to loosening after being used for a long time, resulting in leakage of volatile organic compounds during detection, affecting the health of detection personnel is solved.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing structure for a volatile organic compound detection device, comprising two groups of connecting pipes and a sealing component arranged between the two groups of connecting pipes, the outer surface of the sealing component is provided with an anti-leakage component, both ends of the sealing component are provided with an anti-leakage component, the two groups of anti-leakage components are respectively embedded and connected with the two groups of connecting pipes, the sealing component is used to connect the two groups of connecting pipes, the fastening component is used to reduce leakage, and the anti-leakage component is used to collect leaked gas;

[0005] The anti-leakage component includes a first pressure sensor embedded in the upper end of the connecting pipe and an outer shell body welded to the outer surface of the connecting pipe, a second pressure sensor is fixedly connected to the inner wall of the outer shell body, and two groups of second pressure sensors are arranged at intervals, a collecting component is arranged inside the outer shell body, the second pressure sensor and the first pressure sensor are used to detect the expansion degree of the collecting component, and the collecting component is used to collect leaked gas.

[0006] Preferably, the sealing assembly includes two internal threaded joints respectively threadedly connected to one end of the two groups of connecting pipes, a fixing block is fixedly connected between the two groups of internal threaded joints, the two groups of outer shell shells are respectively fixedly connected to both ends of the fixing block, and the fixing block and the internal threaded joint are used to connect the two groups of connecting pipes.

[0007] Preferably, the fastening assembly comprises a fixed shell fixedly connected to the external structure, a motor is fixedly connected to the inner side of the fixed shell, and a gear is fixedly connected to the output end of the motor via a shaft.

[0008] Preferably, an arc-shaped rack is fixedly connected to the outer surface of the fixed block, and the arc-shaped rack is meshed with a gear, and the gear is used to drive the fixed block to rotate. The gear drives the arc-shaped rack to rotate through a motor, thereby enabling the fixed block and the internal threaded joint to rotate as well.

[0009] Preferably, the collecting component includes a fixing ring fixedly connected to the inner wall of the outer shell body and a rubber ring fixedly connected to the inner side of the fixing ring. An embedding groove is provided on the outer surface of the connecting tube, and the rubber ring is embedded and connected to the embedding groove. A first cavity is formed between one side of the fixing ring and the rubber ring close to the first pressure sensor and the inner wall of the outer shell body, and a second cavity is formed between the other side of the fixing ring and the rubber ring and the internal threaded joint.

[0010] Preferably, an airbag is fixedly connected between the fixing ring and the inner wall of the outer shell, a first one-way air inlet pipe is fixedly connected through both sides of the fixing ring, and one end of the first one-way air inlet pipe is embedded and fixedly connected with the airbag, and the first one-way air inlet pipe is used to allow volatile organic matter in the second cavity to enter the interior of the airbag.

[0011] Preferably, the second pressure sensor is arranged in contact with the airbag, and one end of the airbag connected to the first one-way air inlet pipe is embedded and fixedly connected with the second one-way air inlet pipe, and two groups of second one-way air inlet pipes are arranged at intervals, and the two groups of second one-way air inlet pipes are fixedly connected to the fixing ring, and the second one-way air inlet pipe is used to discharge the gas in the first cavity.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model proposes a sealing structure for a volatile organic compound detection device. When a leak occurs between the internal threaded joint and the connecting pipe, the leaked gas can be collected by an airbag. When the airbag expands, the pressure of the second pressure sensor will change. At this time, the second pressure sensor sends a primary alarm to the mobile end. At this time, the gear is rotated forward and reversely by a small angle through the motor, so that the internal threaded joint and the connecting pipe can be retightened. If the gas continues to leak, the airbag will expand to squeeze the first pressure sensor, and a high-level alarm will be sent to the mobile end through the first pressure sensor. When the volatile organic compound detection device leaks, the utility model can collect the leaked gas to avoid damage to the health of the detection personnel. At the same time, the leak can be re-sealed and different alarm prompts can be issued in different leakage situations to facilitate the staff to understand the situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the disassembly of the connecting pipe, the sealing assembly, the fastening assembly and the first pressure sensor structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the disassembly of the fastening assembly and the fixing block structure of the utility model;

[0017] Figure 4 It is a plan view of the connecting pipe, fixing block and anti-leakage assembly of the utility model;

[0018] Figure 5 For the utility model Figure 4 A magnified detail in the middle;

[0019] Figure 6 It is a schematic structural diagram of the fixing ring, the first one-way air intake pipe, the air bag and the second one-way air intake pipe of the utility model.

[0020] In the figure: 1. connecting pipe; 11. embedding groove; 2. sealing assembly; 21. fixing block; 22. internal thread joint; 3. fastening assembly; 31. fixing shell; 32. motor; 33. gear; 34. arc rack; 4. anti-leakage assembly; 41. first pressure sensor; 42. outer shell; 43. second pressure sensor; 44. collecting component; 441. fixing ring; 442. rubber ring; 443. first one-way air inlet pipe; 444. airbag; 445. second one-way air inlet pipe; 45. first cavity; 46. second cavity. DETAILED DESCRIPTION

[0021] 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.

[0022] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0023] Combination Figure 1 , Figure 2 and Figure 4A sealing structure for a volatile organic compound detection device includes two groups of connecting pipes 1 and a sealing component 2 arranged between the two groups of connecting pipes 1, an anti-leakage component 4 is arranged on the outer surface of the sealing component 2, and anti-leakage components 4 are arranged at both ends of the sealing component 2. The two groups of anti-leakage components 4 are respectively embedded and connected with the two groups of connecting pipes 1, the sealing component 2 is used to connect the two groups of connecting pipes 1, the fastening component 3 is used to reduce leakage, and the anti-leakage component 4 is used to collect leaked gas;

[0024] The anti-leakage component 4 includes a first pressure sensor 41 embedded in the upper end of the connecting pipe 1 and an outer shell shell 42 welded to the outer surface of the connecting pipe 1, a second pressure sensor 43 is fixedly connected to the inner wall of the outer shell shell 42, and two groups of second pressure sensors 43 are arranged at intervals, and a collecting component 44 is arranged inside the outer shell shell 42, the second pressure sensor 43 and the first pressure sensor 41 are used to detect the expansion degree of the collecting component 44, and the collecting component 44 is used to collect leaked gas.

[0025] The utility model is further described below in conjunction with embodiments.

[0026] See also Figure 3 The sealing assembly 2 includes two internal threaded joints 22 respectively threadedly connected to one end of the two groups of connecting pipes 1, a fixing block 21 is fixedly connected between the two groups of internal threaded joints 22, and the two groups of outer shell shells 42 are respectively fixedly connected to both ends of the fixing block 21, and the fixing block 21 and the internal threaded joints 22 are used to connect the two groups of connecting pipes 1.

[0027] The fastening assembly 3 includes a fixed housing 31 fixedly connected to the external structure, a motor 32 is fixedly connected to the inner side of the fixed housing 31 , and a gear 33 is fixedly connected to the output end of the motor 32 via a shaft.

[0028] An arc-shaped rack 34 is fixedly connected to the outer surface of the fixed block 21, and the arc-shaped rack 34 is meshed with the gear 33. The gear 33 is used to drive the fixed block 21 to rotate. The motor 32 drives the arc-shaped rack 34 to rotate, so that the fixed block 21 and the internal threaded joint 22 can also rotate. By rotating the internal threaded joint 22, the internal threaded joint 22 and the connecting pipe 1 are loosened and then tightened, so that the connecting pipe 1 and the internal threaded joint 22 can be tightened and sealed again.

[0029] The collecting component 44 includes a fixing ring 441 fixedly connected to the inner wall of the outer shell 42 and a rubber ring 442 fixedly connected to the inner side of the fixing ring 441. An embedding groove 11 is provided on the outer surface of the connecting pipe 1, and the rubber ring 442 is embedded and connected to the embedding groove 11. A first cavity 45 is formed between the fixing ring 441 and the rubber ring 442 on one side close to the first pressure sensor 41 and the inner wall of the outer shell 42, and a second cavity 46 is formed between the fixing ring 441 and the rubber ring 442 on the other side and the internal threaded joint 22.

[0030] An airbag 444 is fixedly connected between the fixing ring 441 and the inner wall of the outer shell body 42, and a first one-way air inlet pipe 443 is fixedly connected and penetrates through both sides of the fixing ring 441, and one end of the first one-way air inlet pipe 443 is embedded and fixedly connected with the airbag 444. The first one-way air inlet pipe 443 is used to supply volatile organic matter in the second cavity 46 to enter the interior of the airbag 444, and the volatile organic matter can flow into the interior of the airbag 444 in a one-way manner through the first one-way air inlet pipe 443 and prevent backflow.

[0031] The second pressure sensor 43 is arranged in contact with the airbag 444, and one end of the airbag 444 connected to the first one-way air inlet pipe 443 is embedded and fixedly connected with the second one-way air inlet pipe 445, and two groups of second one-way air inlet pipes 445 are arranged at intervals, and the two groups of second one-way air inlet pipes 445 are both penetrated and fixedly connected with the fixing ring 441. The second one-way air inlet pipe 445 is used to discharge the gas in the first cavity 45. The gas in the first cavity 45 can enter the second cavity 46 through the second one-way air inlet pipe 445, which can prevent the gas in the first cavity 45 from blocking the expansion of the collecting component 44.

[0032] Specifically, when leakage occurs between the internal threaded joint 22 and the connecting pipe 1, the leaked gas will enter the second cavity 46. As the gas continues to leak, the gas inside the second cavity 46 will enter the airbag 444 to expand the airbag 444. When the airbag 444 expands, the pressure of the second pressure sensor 43 will change. At this time, the second pressure sensor 43 sends a primary alarm to the mobile end. At this time, the motor 32 is used to make the gear 33 rotate forward and reverse by a small angle, so that the internal threaded joint 22 rotates forward and reverse by a small angle, and the internal threaded joint 22 and the connecting pipe 1 can be retightened. If the gas continues to leak, the airbag 444 will expand to squeeze the first pressure sensor 41, and a high-level alarm will be sent to the mobile end through the first pressure sensor 41. The utility model can collect the leaked gas when the volatile organic compound detection device leaks, so as to avoid damage to the health of the detection personnel. At the same time, it can reseal the leak and send different alarm prompts in different leakage situations to facilitate the staff to understand the situation.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for a volatile organic compound detection device, comprising two groups of connecting tubes (1) and a sealing assembly (2) arranged between the two groups of connecting tubes (1), characterized in that: The outer surface of the sealing component (2) is provided with an anti-leakage component (4), and both ends of the sealing component (2) are provided with an anti-leakage component (4). The two groups of anti-leakage components (4) are respectively embedded and connected with the two groups of connecting pipes (1). The sealing component (2) is used to connect the two groups of connecting pipes (1), the fastening component (3) is used to reduce leakage, and the anti-leakage component (4) is used to collect leaked gas. The anti-leakage component (4) comprises a first pressure sensor (41) embedded in the upper end of the connecting pipe (1) and an outer shell (42) welded to the outer surface of the connecting pipe (1); a second pressure sensor (43) is fixedly connected to the inner wall of the outer shell (42), and two groups of the second pressure sensors (43) are arranged at intervals; a collecting component (44) is arranged inside the outer shell (42); the second pressure sensor (43) and the first pressure sensor (41) are used to detect the expansion degree of the collecting component (44); and the collecting component (44) is used to collect leaked gas.

2. The sealing structure for a volatile organic compound detection device according to claim 1, characterized in that: The sealing assembly (2) comprises two internal threaded joints (22) respectively threadedly connected to one end of the two groups of connecting pipes (1); a fixing block (21) is fixedly connected between the two groups of internal threaded joints (22); the two groups of outer shells (42) are respectively fixedly connected to both ends of the fixing block (21); and the fixing block (21) and the internal threaded joint (22) are used to connect the two groups of connecting pipes (1).

3. The sealing structure for a volatile organic compound detection device according to claim 2, characterized in that: The fastening assembly (3) comprises a fixed housing (31) fixedly connected to an external structure, a motor (32) is fixedly connected to the inner side of the fixed housing (31), and a gear (33) is fixedly connected to the output end of the motor (32) via a shaft.

4. The sealing structure for a volatile organic compound detection device according to claim 3, characterized in that: An arc-shaped rack (34) is fixedly connected to the outer surface of the fixing block (21), and the arc-shaped rack (34) is meshedly connected with a gear (33). The gear (33) is used to drive the fixing block (21) to rotate. The gear (33) drives the arc-shaped rack (34) to rotate through a motor (32), thereby enabling the fixing block (21) and the internal thread joint (22) to also rotate.

5. The sealing structure for a volatile organic compound detection device according to claim 1, characterized in that: The collecting component (44) comprises a fixing ring (441) fixedly connected to the inner wall of the outer shell (42) and a rubber ring (442) fixedly connected to the inner side of the fixing ring (441); an embedding groove (11) is provided on the outer surface of the connecting pipe (1), and the rubber ring (442) is embedded and connected to the embedding groove (11); a first cavity (45) is formed between one side of the fixing ring (441) and the rubber ring (442) close to the first pressure sensor (41) and the inner wall of the outer shell (42); and a second cavity (46) is formed between the other side of the fixing ring (441) and the rubber ring (442) and the internal threaded joint (22).

6. The sealing structure for a volatile organic compound detection device according to claim 5, characterized in that: An air bag (444) is fixedly connected between the fixing ring (441) and the inner wall of the outer shell (42); first one-way air inlet pipes (443) are fixedly connected and penetrate through both sides of the fixing ring (441); one end of the first one-way air inlet pipe (443) is embedded and fixedly connected to the air bag (444); the first one-way air inlet pipe (443) is used to allow volatile organic matter in the second cavity (46) to enter the interior of the air bag (444).

7. The sealing structure for a volatile organic compound detection device according to claim 6, characterized in that: The second pressure sensor (43) is arranged in contact with the airbag (444), and one end of the airbag (444) connected to the first one-way air inlet pipe (443) is embedded and fixedly connected with a second one-way air inlet pipe (445), and two groups of second one-way air inlet pipes (445) are arranged at intervals, and the two groups of second one-way air inlet pipes (445) are both fixedly connected to the fixing ring (441), and the second one-way air inlet pipe (445) is used to discharge the gas in the first cavity (45).

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