Gas sampling and detecting device for environment detection

Abstract

The utility model discloses a gas sampling and detecting device in the field of environment detection. The gas sampling and detecting device comprises a gun body, a telescopic assembly and a sampling assembly, an annular through groove and a mounting cavity located in the axis of the gun body are formed in the gun body. The telescopic assembly is installed in the installation cavity. The sampling assembly comprises a positioning seat, a sampling cylinder, a sealing piston, a connecting seat and a tension spring. The port of the sampling cylinder is screwed with the positioning seat, the sealing piston is mounted in the sampling cylinder, and the positioning seat is fixed at the tail part of the gun body and is communicated with the annular through groove and the sampling cylinder. An assembling sinking groove is formed in the tail of the positioning seat, a receding groove is formed in a port of the sinking groove, and the connecting seat is slidably assembled in the receding groove and matched with the sealing piston. And two ends of the tension spring are respectively fixed with the assembly sinking groove and the connecting seat. A movable part of the telescopic assembly is arranged in the assembling sinking groove and abuts against the connecting base. The device has the advantages of being easy and convenient to operate, rapid in response and convenient to directly use on site, and an efficient and convenient solution is provided for on-site rapid environment detection.

Description

Technical Field

[0001] The utility model relates to the technical field of gas sampling, in particular to a gas sampling detection device for environmental detection. Background Art

[0002] The gas components and their concentration levels in the environment have a profound impact on human health and ecosystems. Traditionally, gas sampling and testing are an integral part of environmental monitoring, used to identify and quantify pollutants within a specific area. These tests usually require highly sophisticated equipment to ensure the accuracy and reliability of the test results.

[0003] In the prior art, gas sampling usually involves sucking air samples directly into an analyzer or collecting them in a specific container for subsequent laboratory analysis. These traditional methods may face a series of challenges, including but not limited to potential contamination of samples during collection, transportation and storage, as well as high operator skill requirements and strong dependence on environmental conditions. In addition, laboratory analysis usually requires a long processing time, which may not be effective when real-time or near-real-time monitoring data is required.

[0004] In view of the limitations of existing technologies, the industry continues to explore new gas sampling and detection technologies to improve the accuracy and reliability of detection, as well as the ability to respond quickly on site. Although some progress has been made, existing solutions still face challenges in improving detection efficiency, reducing environmental dependence and operational complexity.

[0005] The current design of environmental monitoring equipment must also take into account the portability of the equipment so that it can be flexibly deployed in different geographical locations. Improving the automation level of equipment, reducing manual operations, and improving the intelligence level of data processing and communication are important trends in the development of modern environmental monitoring technology. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a gas sampling and detection device for environmental detection, which has the advantages of simple operation, rapid response, and convenience for direct on-site use. It provides an efficient and convenient solution for rapid on-site environmental detection and has broad application prospects and market potential.

[0007] The technical solution adopted by the utility model to achieve the above-mentioned purpose is: a gas sampling and detection device for environmental detection, including a gun body, a telescopic component assembled in the gun body, and a sampling component assembled at the rear of the gun body, the gun body is provided with an annular groove and an installation cavity, the installation cavity is arranged at the axis center of the annular groove, and the telescopic component is assembled in the installation cavity.

[0008] The sampling assembly includes a positioning seat, a sampling tube, a sealing piston, a connecting seat, and a tension spring. The port of the sampling tube is screwed onto the positioning seat, the sealing piston is assembled in the sampling tube, the positioning seat is fixedly assembled at the rear end of the gun body, and the positioning seat is connected with the annular through groove and the sampling tube. An assembly groove is provided at the axis center of the rear end of the positioning seat, and a clearance groove is provided at the port of the assembly groove. The connecting seat is slidably assembled in the clearance groove and nested with the sealing piston. The tension spring is arranged in the assembly groove and its two ends are respectively fixedly connected with the assembly groove and the connecting seat. The movable part of the telescopic assembly extends into the assembly groove and is kept in contact with the connecting seat.

[0009] In some of the implementations, in order to ensure that the positioning seat can be installed at the rear of the gun body in a detachable manner, the following technical solutions are provided.

[0010] A positioning groove is provided at the rear end of the gun body, the positioning seat is nested in the positioning groove, a limiting plate is fixedly connected to the periphery of the positioning seat and is kept in close contact with the rear end of the gun body, a positioning cover is sleeved on the periphery of the positioning seat, the positioning cover is screwed to the rear end of the gun body and is kept in close contact with the limiting plate.

[0011] After the positioning seat is assembled in place, in order to ensure that the positioning seat can achieve the connection between the annular through groove and the sampling tube and to ensure that the connecting seat can block this connection state when it is in the yield groove, the following technical solution is provided.

[0012] An annular arc groove A is provided in the positioning groove, a connecting passage A for connecting the annular arc groove A and the annular through groove is provided inside the gun body, an annular arc groove B matching the annular arc groove A is provided at the end of the positioning seat, a connecting passage B for connecting the annular arc groove B and the assembly groove is provided inside the positioning seat, and a No. 1 rubber ring is nested in the giving way groove to maintain a sealing fit with the connecting seat.

[0013] In some of the implementations, in order to ensure that the telescopic assembly can be stably installed in the installation cavity and can stably push the connecting seat to operate, the following technical solutions are provided.

[0014] The telescopic assembly includes an electric telescopic cylinder and a push rod fixedly connected to the movable end of the electric telescopic cylinder. The electric telescopic cylinder is fixedly installed in the installation cavity. The push rod penetrates the gun body and the positioning seat and extends into the assembly groove. The end of the push rod is nested and abutted with the connecting seat.

[0015] In the stage of collecting gas samples into the sampling tube, in order to achieve preliminary detection of the gas samples, the following technical solutions are provided.

[0016] A plurality of installation grooves distributed in a circular array are provided on the side wall of the end of the push rod, and detection sensors are installed in the installation grooves.

[0017] In some of the implementations, in order to ensure that the sampling tube port position can be stably screwed on the positioning seat, and to ensure the sealing of the combination of the two, and to ensure that the connecting seat can effectively drive the sealing piston to operate in the sampling tube, the following technical solutions are provided.

[0018] An annular cushion is fixedly connected to the outer wall of the sampling tube port, the sampling tube port is screwed to the inner side of the positioning seat and the annular cushion is kept in contact with the positioning seat, and a No. 2 rubber ring is nested inside the sampling port to keep a sealed fit with the sampling tube port.

[0019] The sealing piston comprises a piston seat and a sealing rubber sleeve nested on the outside of the piston seat. The sealing rubber sleeve is kept in sealing contact with the inner wall of the sampling tube, and the piston seat is kept in nesting contact with the connecting seat.

[0020] Beneficial effects of the utility model:

[0021] 1. Easy operation: The design of the device takes into account the convenience of user operation, simplifies the sample collection and analysis steps, and enables non-professionals to easily perform gas detection.

[0022] 2. Rapid response: The device enables rapid sampling and analysis, providing immediate test results, which is particularly useful for environmental monitoring situations that require a quick response.

[0023] 3. Direct use on site: The portable design and high degree of automation of the device allow it to be used directly on site without bringing samples back to the laboratory, thus greatly shortening the time for data acquisition.

[0024] 4. Stability and reliability: The device can work stably under different environmental conditions, ensuring the reliability of the test results. At the same time, the sampling tube can be automatically closed after the gas sample is collected to avoid interference and contamination of the gas sample.

[0025] In summary, the gas sampling and detection device proposed in this scheme, through its innovative design and multiple optimizations, provides an efficient and convenient solution for on-site rapid environmental detection, and has broad application prospects and market potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model after removing the gun handle;

[0028] Figure 3It is a schematic diagram of the cross-sectional structure of the combination of the gun body and the telescopic component;

[0029] Figure 4 It is a schematic diagram of the cross-sectional structure of the positioning seat, the connecting seat and the tension spring combination;

[0030] Figure 5 It is a schematic diagram of the cross-sectional structure of the combination of the sampling tube and the sealing piston.

[0031] In the figure: 1 gun body, 11 annular through groove, 12 installation cavity, 13 positioning sink groove, 131 annular arc groove A, 14 connecting passage A, 21 electric telescopic cylinder, 22 push rod, 221 installation sink groove, 31 positioning seat, 311 assembly sink groove, 312 give way groove, 313 limit plate, 314 positioning cover, 315 annular arc groove B, 316 connecting passage B, 317 No. 1 rubber ring, 318 No. 2 rubber ring, 32 sampling tube, 321 pressure stabilizing port, 322 limit ring, 323 annular cushion seat, 331 piston seat, 332 sealing rubber sleeve, 34 connecting seat, 35 tension spring, 4 gun handle, 41 operating button. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figure 1-5 A gas sampling and detection device for environmental detection includes a gun body 1, a telescopic component assembled in the gun body 1, and a sampling component assembled at the rear of the gun body 1. An annular groove 11 and an installation cavity 12 are opened in the gun body 1. The installation cavity 12 is arranged at the axis center of the annular groove 11, and the telescopic component is assembled in the installation cavity 12.

[0034] The sampling assembly includes a positioning seat 31, a sampling tube 32, a sealing piston, a connecting seat 34, and a tension spring 35. The port of the sampling tube 32 is screwed onto the positioning seat 31, the sealing piston is assembled in the sampling tube 32, the positioning seat 31 is fixedly assembled at the rear end of the gun body 1, and the positioning seat 31 is connected to the annular groove 11 and the sampling tube 32. An assembly groove 311 is provided at the axis center of the rear end of the positioning seat 31, and a clearance groove 312 is provided at the end of the assembly groove 311. The connecting seat 34 is slidably assembled in the clearance groove 312 and nested with the sealing piston. The tension spring 35 is arranged in the assembly groove 311 and its two ends are respectively fixedly connected to the assembly groove 311 and the connecting seat 34. The movable part of the telescopic assembly extends into the assembly groove 311 and is kept in contact with the connecting seat 34.

[0035] The setting of the gun body 1 can ensure that the telescopic component and the sampling component are stably assembled thereon, wherein the telescopic component is fixed inside the gun body 1 and continuously operates as a part of the gun body 1, and the sampling component is detachably assembled at the rear of the gun body 1, which is convenient for disassembly and assembly to meet the needs of collecting large quantities of gas samples.

[0036] To facilitate the operation of the gun body 1, a gun handle 4 is fixed to the bottom of the gun body 1. The gun handle 4 is equipped with an operating button 41 for controlling the telescopic posture of the telescopic component, which is convenient for the sampler to hold the gun handle 4 with one hand and control the telescopic posture of the telescopic component.

[0037] When the sampling assembly is not in use, the sealing piston is at the end of the sampling tube 32 and is in close contact with the connecting seat 34 stored in the clearance groove 312. When the telescopic assembly is controlled to extend, its movable parts can push the connecting seat 34 and the sealing piston to move toward the tail of the sampling tube 32, and stretch the tension spring 35 to store elastic potential energy, thereby extracting external gas from the front side of the gun body 1 along the annular groove 11 and the positioning seat 31 into the sampling tube 32.

[0038] When the sealing piston moves to the tail end of the sampling cylinder 32, the telescopic assembly is controlled to shrink and retract into the gun body 1. During this process, the tension spring 35 releases elastic potential energy and pulls the connecting seat 34 to retract and re-enter the clearance groove 312, and the connecting seat 34 seals the positioning seat 31 to prevent the collected gas sample from being contaminated. At this time, since the sampling cylinder 32 stores the gas sample and pushes the sealing piston to stop at the tail end of the sampling cylinder 32, the sampling cylinder 32 can be effectively sealed with the help of the positioning seat 31, the connecting seat 34 and the sealing piston to ensure the sealing of the internal gas sample storage.

[0039] In order to ensure that the sealing piston can operate stably in the sampling cylinder 32 under the action of the telescopic assembly, and to prevent the sealing piston from detaching from the sampling cylinder 32, a pressure-stabilizing port 321 is opened at the tail of the sampling cylinder 32, and a limiting ring 322 is fixedly connected to the inner side of the pressure-stabilizing port 321. The setting of the pressure-stabilizing port 321 can ensure that the tail of the sampling cylinder 32 is always connected to the external environment, and ensure that the sealing piston moves stably in the sampling cylinder 32, and the setting of the limiting ring 322 can limit the sealing piston and prevent the sealing piston from falling off from the pressure-stabilizing port 321.

[0040] In order to ensure that the positioning seat 31 can be installed at the rear of the gun body 1 in a detachable manner, the following technical solution is provided.

[0041] A positioning groove 13 is provided at the rear end of the gun body 1, and a positioning seat 31 is nested and installed in the positioning groove 13. A limiting plate 313 is fixedly connected to the outer periphery of the positioning seat 31 and keeps in contact with the rear end of the gun body 1. A positioning cover 314 is sleeved on the outer periphery of the positioning seat 31. The positioning cover 314 is screwed to the rear end of the gun body 1 and keeps in contact with the limiting plate 313.

[0042] The setting of the positioning groove 13 can ensure that the positioning seat 31 is stably installed therein and connected with the annular groove 11, and ensure that the movable parts of the telescopic assembly can pass through the positioning seat 31 and effectively act on the connecting seat 34. The setting of the limit plate 313 can ensure that the outer positioning cover 314 presses the positioning seat 31, and the fixed combination of the positioning seat 31 and the gun body 1 is achieved by screwing the positioning cover 314 and the rear end of the gun body 1.

[0043] After the positioning seat 31 is assembled in place, in order to ensure that the positioning seat 31 can achieve the communication between the annular groove 11 and the sampling tube 32 and to ensure that the connecting seat 34 can block this communication state when it is in the yield groove 312, the following technical solution is provided.

[0044] An annular arc groove A131 is provided in the positioning groove 13, a connecting passage A14 for connecting the annular arc groove A131 and the annular through groove 11 is provided inside the gun body 1, an annular arc groove B315 matching the annular arc groove A131 is provided at the end of the positioning seat 31, a connecting passage B316 for connecting the annular arc groove B315 and the assembly groove 311 is provided inside the positioning seat 31, and a No. 1 rubber ring 317 is nested and installed in the clearance groove 312 to maintain a sealing fit with the connecting seat 34.

[0045] After the positioning seat 31 is assembled to the positioning sink 13, the annular arc groove A131 and the reversing arc groove B are connected and connected, and the gas sample in the annular through groove 11 can enter the sampling tube 32 through the connecting passage A14, the annular arc groove A131, the annular arc groove B315, the connecting passage B316, the assembly sink 311, and the clearance groove 312 in sequence. When the connecting seat 34 is in the clearance groove 312, it is tightly attached to the first rubber ring 317 by the tension spring 35, and the connecting seat 34 effectively seals the assembly sink 311 to block the flow path of the gas sample, ensuring that the gas sample can be stably stored in the sampling tube 32.

[0046] In order to ensure that the telescopic assembly can be stably installed in the installation cavity 12 and can stably push the connecting seat 34 to operate, the following technical solution is provided.

[0047] The telescopic assembly includes an electric telescopic cylinder 21 and a push rod 22 fixed to the movable end of the electric telescopic cylinder 21. The electric telescopic cylinder 21 is fixedly installed in the installation cavity 12. The push rod 22 penetrates the gun body 1 and the positioning seat 31 and extends to the assembly groove 311. The end of the push rod 22 is nested and abutted with the connecting seat 34.

[0048] When the electric telescopic cylinder 21 is controlled to extend, the push rod 22 can be synchronously driven to extend outward toward the rear end of the gun body 1, thereby pushing the connecting seat 34 and the sealing piston to move toward the rear end of the sampling tube 32. When the electric telescopic cylinder 21 controls the push rod 22 to slowly retract, the connecting seat 34 is always nested with the retracted push rod 22 under the action of the rebound force of the pull ring, and is finally retracted into the make way groove 312 to seal the assembly sink groove 311.

[0049] In the stage of collecting gas samples from the sampling cylinder 32, in order to achieve preliminary detection of the gas samples, the following technical solutions are provided.

[0050] A plurality of installation recesses 221 distributed in a circular array are provided on the side wall of the end of the push rod 22 , and detection sensors are installed in the installation recesses 221 .

[0051] The installation of the sink 221 can ensure that the detection sensor is stably assembled inside it without affecting the telescopic movement of the push rod 22. The detection sensor can be a temperature sensor, a humidity sensor, and a sensor for detecting various pollutant concentrations. The data line of the detection sensor is distributed along the axis of the push rod 22 and extends from one end of the electric telescopic cylinder 21.

[0052] A liquid crystal display for displaying various detection indicators can also be installed on the outside of the gun body 1 to facilitate sampling personnel to understand the status of the gas sample.

[0053] In order to ensure that the port position of the sampling cylinder 32 can be stably screwed on the positioning seat 31, and to ensure the sealing of the combination of the two, and to ensure that the connecting seat 34 can effectively drive the sealing piston to operate in the sampling cylinder 32, the following technical solution is provided.

[0054] An annular cushion seat 323 is fixedly connected to the outer wall of the sampling tube 32 port, and the sampling tube 32 port is screwed to the inner side of the positioning seat 31 and the annular cushion seat 323 is kept in contact with the positioning seat 31. A No. 2 rubber ring 318 is nested inside the sampling port to keep a sealing fit with the sampling tube 32 port.

[0055] The sealing piston includes a piston seat 331 and a sealing rubber sleeve 332 nested on the outside of the piston seat 331 . The sealing rubber sleeve 332 keeps sealing fit with the inner wall of the sampling tube 32 , and the piston seat 331 keeps nesting and abutting with the connecting seat 34 .

[0056] The setting of the annular pad 323 can ensure that the port of the sampling tube 32 and the positioning seat 31 are stably screwed together. By installing a No. 2 rubber ring 318 at the connection between the two, the gas sample in the sampling tube 32 can be prevented from leaking from the connection gap. For the sealing piston, the sealing rubber sleeve 332 on the outside can achieve a sealed combination with the sampling tube 32, and the inner piston seat 331 is made of hard plastic, which can effectively abut against the connecting seat 34 and withstand the load transmitted from the connecting seat 34.

[0057] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0058] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A gas sampling and detection device for environmental detection, characterized in that: The invention comprises a gun body (1), a telescopic assembly mounted in the gun body (1), and a sampling assembly mounted at the rear of the gun body (1), wherein the gun body (1) is provided with an annular through groove (11) and a mounting cavity (12), the mounting cavity (12) being arranged at the axis center of the annular through groove (11), and the telescopic assembly being mounted in the mounting cavity (12); The sampling assembly comprises a positioning seat (31), a sampling tube (32), a sealing piston, a connecting seat (34), and a tension spring (35). The port of the sampling tube (32) is screwed onto the positioning seat (31), the sealing piston is assembled in the sampling tube (32), the positioning seat (31) is fixedly assembled at the rear end of the gun body (1), and the positioning seat (31) is connected to the annular groove (11) and the sampling tube (32). The rear end of the positioning seat (31) is provided with a mounting spring. The assembly sink groove (311) is provided with a clearance groove (312) at the end of the assembly sink groove (311), the connecting seat (34) is slidably assembled in the clearance groove (312) and nested with the sealing piston, the tension spring (35) is arranged in the assembly sink groove (311) and its two ends are respectively fixedly connected to the assembly sink groove (311) and the connecting seat (34), and the movable part of the telescopic assembly extends into the assembly sink groove (311) and is in contact with the connecting seat (34).

2. A gas sampling and detection device for environmental detection according to claim 1, characterized in that: The rear portion of the gun body (1) is provided with a positioning recess (13), the positioning seat (31) is nested and installed in the positioning recess (13), the periphery of the positioning seat (31) is fixedly connected with a limiting plate (313) which is kept in close contact with the rear portion of the gun body (1), the periphery of the positioning seat (31) is sleeved with a positioning cover (314), the positioning cover (314) is screwed to the rear portion of the gun body (1) and is kept in close contact with the limiting plate (313).

3. A gas sampling and detection device for environmental detection according to claim 2, characterized in that: The positioning recessed groove (13) is provided with an annular arc groove A (131), the gun body (1) is provided with a connecting passage A (14) for connecting the annular arc groove A (131) and the annular through groove (11), the end of the positioning seat (31) is provided with an annular arc groove B (315) matched with the annular arc groove A (131), the positioning seat (31) is provided with a connecting passage B (316) for connecting the annular arc groove B (315) and the assembly recessed groove (311), and the first rubber ring (317) is nested and installed in the clearance groove (312) to maintain a sealing fit with the connecting seat (34).

4. A gas sampling and detection device for environmental detection according to claim 1, characterized in that: The telescopic assembly comprises an electric telescopic cylinder (21) and a push rod (22) fixedly connected to the movable end of the electric telescopic cylinder (21); the electric telescopic cylinder (21) is fixedly installed in the installation cavity (12); the push rod (22) penetrates the gun body (1) and the positioning seat (31) and extends into the assembly sink groove (311); the end of the push rod (22) is nested and abutted against the connecting seat (34).

5. A gas sampling and detection device for environmental detection according to claim 4, characterized in that: A plurality of groups of mounting recessed grooves (221) distributed in a ring array are provided on the side wall of the end of the push rod (22), and detection sensors are installed in the mounting recessed grooves (221).

6. A gas sampling and detection device for environmental detection according to claim 1, characterized in that: An annular cushion seat (323) is fixedly connected to the outer wall of the sampling tube (32) port, the sampling tube (32) port is screwed to the inner side of the positioning seat (31) and the annular cushion seat (323) is kept in contact with the positioning seat (31), and a second rubber ring (318) is nested inside the sampling port to keep a sealing fit with the sampling tube (32) port; the sealing piston comprises a piston seat (331) and a sealing rubber sleeve (332) nested outside the piston seat (331), the sealing rubber sleeve (332) is kept in a sealing fit with the inner wall of the sampling tube (32), and the piston seat (331) is kept nested and in contact with the connecting seat (34).

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