Volatile organic compound heating box structure with sampling function

Abstract

The utility model discloses a volatile organic compound heating box structure with a sampling function, which belongs to the technical field of gas analysis and detection and comprises a box body, a ten-way valve, a first gas pipe, a second gas pipe, a third gas pipe, a fourth gas pipe, a fifth gas pipe, a sixth gas pipe, a metering ring, a nitrogen pipe, a gas inlet pipe, an emptying pipe, a heating component, a sealing component and a plurality of groups of placing components, one ends of the first air pipe, the second air pipe, the third air pipe, the fourth air pipe, the fifth air pipe and the sixth air pipe are fixedly connected with the ten-way valve, and the other ends of the first air pipe, the second air pipe, the third air pipe, the fourth air pipe, the fifth air pipe and the sixth air pipe are fixedly connected with the corresponding placing assemblies. The collected sample can be conveyed to the detection equipment after being heated, so that organic matter liquid drops formed by condensation of volatile organic compounds are eliminated, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] This utility model belongs to the field of gas analysis and detection technology, and provides a structure for a volatile organic compound heating box with sample introduction function. Background Technology

[0002] Volatile organic compounds (VOCs) are important precursors to secondary pollutants such as fine particulate matter and ozone, which in turn cause atmospheric environmental problems such as haze and photochemical smog. Therefore, it is necessary to regularly monitor the emissions of VOCs to prevent them from polluting the environment.

[0003] In environmental testing experiments, because volatile organic compounds have low boiling points, when collecting waste gas containing volatile organic compounds, if the temperature of the waste gas in the exhaust stack is higher than the ambient temperature, the sampling pipeline needs to be heated to 120℃ (±5℃) before the waste gas is sampled to prevent the volatile organic compounds from condensing due to the temperature drop during the sampling process.

[0004] However, in the aforementioned existing technologies, when the collected samples are transferred, the sudden drop in temperature causes some volatile organic compounds to condense into organic droplets. These organic droplets adhere to the inside of the detection equipment, which can affect the accuracy of the detection results. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a volatile organic compound heating box structure with sample introduction function, which aims to solve the problem in the prior art that when the collected sample is transferred, the temperature drops suddenly, causing some volatile organic compounds to condense into organic droplets. These organic droplets adhere to the inside of the detection equipment and affect the accuracy of the detection results.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a structure for a volatile organic compound heating chamber with sample introduction function, including a chamber body, a ten-way valve, a first gas pipe, a second gas pipe, a third gas pipe, a fourth gas pipe, a fifth gas pipe, a sixth gas pipe, a metering ring, a nitrogen pipe, an inlet pipe, an exhaust pipe, a heating assembly, a sealing assembly, and multiple sets of placement assemblies. The ten-way valve passes through the chamber body and is fixedly connected to the chamber body. The multiple sets of placement assemblies are all disposed inside the chamber body. One end of the first, second, third, fourth, fifth, and sixth gas pipes is fixedly connected to the ten-way valve, and the other end of the first, second, third, fourth, fifth, and sixth gas pipes is fixedly connected to the corresponding placement assembly. The heating assembly is disposed inside the chamber body, and the sealing assembly is disposed on one side of the chamber body.

[0008] Furthermore, each set of placement components includes a placement box, two upright plates, a connector, and an extrusion member. One end of each of the two upright plates is fixedly connected to the box body, and the other end of each of the two upright plates is fixedly connected to the placement box. The connector passes through the placement box and is fixedly connected to the placement box. The extrusion member is disposed inside the placement box.

[0009] Furthermore, the extrusion component includes a lead screw, a motor, a moving plate, and a pressure plate. The moving plate passes through the placement box and is slidably connected to the placement box. The lead screw passes through the moving plate and is threadedly engaged with the moving plate. The two ends of the lead screw are rotatably connected to the two vertical plates respectively. The output end of the motor is fixedly connected to the lead screw. The moving plate is fixedly connected to the moving plate and is located at the upper end of the moving plate.

[0010] Furthermore, the heating assembly includes an electrical control box and a heating mesh. The electrical control box is located on the outside of the housing, and the heating mesh is located inside the housing. Both ends of the heating mesh penetrate the housing and are fixedly connected to the electrical control box.

[0011] Furthermore, the sealing assembly includes a door, two mounting plates, a handle, and an observation piece. The door is hinged to the box body, both mounting plates are fixedly connected to the door and located on the outside of the door, the two ends of the handle are fixedly connected to the two mounting plates respectively, and the observation piece is fixedly connected to the door.

[0012] Furthermore, the observation device includes a fixed frame and a transparent plate. The fixed frame passes through the box door and is fixedly connected to the box door. The transparent plate is fixedly connected to the fixed frame and is located inside the fixed frame.

[0013] Furthermore, the sealing assembly includes an anti-slip sleeve, which is fitted over the outside of the grip.

[0014] The beneficial effects of this invention are as follows: Six sample gas bags are placed in multiple sets of placement components, and the interior of the chamber is heated by the heating component, causing the organic droplets in the sample gas bags to vaporize. Then, the first, second, third, fourth, fifth, and sixth gas pipes are sequentially connected to the metering ring via the ten-way valve, allowing the organic gases from the six sample gas bags to sequentially enter the detection device for testing. Finally, the first, second, third, fourth, fifth, and sixth gas pipes are sequentially connected to the nitrogen pipe via the ten-way valve. The system connects the pipelines, allowing high-purity nitrogen to enter the first, second, third, fourth, fifth, and sixth gas pipes respectively, thereby cleaning the pipelines. The inlet pipe is connected to the metering ring via the ten-way valve, allowing standard gas to be directly introduced into the detection equipment for testing. The gas in the pipelines can be vented through the vent pipe. This method effectively solves the problem in the prior art where, during the transfer of collected samples, a sudden drop in temperature causes some volatile organic compounds to condense into organic droplets, which adhere to the inside of the detection equipment and affect the accuracy of the test results.

[0015] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a partial structural schematic diagram of the present invention.

[0019] Figure 3 This is a partial front view of the structure of this utility model.

[0020] Figure 4 This is a partial structural schematic diagram of the present invention.

[0021] Attached reference numerals: 101-Box body, 102-Ten-way valve, 103-First air pipe, 104-Second air pipe, 105-Third air pipe, 106-Fourth air pipe, 107-Fifth air pipe, 108-Sixth air pipe, 109-Metering ring, 110-Nitrogen pipe, 111-Inlet pipe, 112-Exhaust pipe, 113-Placement box, 114-Upright plate, 115-Connector, 116-Screw rod, 117-Motor, 118-Moving plate, 119-Pressure plate, 120-Electrical control box, 121-Heating grid, 122-Box door, 123-Mounting plate, 124-Holding rod, 125-Fixing frame, 126-Transparent plate, 127-Anti-slip sleeve. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0023] like Figure 1-4 As shown, where Figure 1 This is a structural schematic diagram of the present invention. Figure 2 This is a partial structural schematic diagram of the present invention. Figure 3 This is a partial front view of the structure of this utility model. Figure 4 This is a partial structural schematic diagram of the present invention.

[0024] This utility model provides a structure for a volatile organic compound heating chamber with sample introduction function, including a chamber body 101, a ten-way valve 102, a first gas pipe 103, a second gas pipe 104, a third gas pipe 105, a fourth gas pipe 106, a fifth gas pipe 107, a sixth gas pipe 108, a metering ring 109, a nitrogen pipe 110, an inlet pipe 111, an exhaust pipe 112, a heating assembly, a sealing assembly, and multiple sets of placement assemblies. The ten-way valve 102 passes through the chamber body 101 and is fixedly connected to the chamber body 101. The multiple sets of placement assemblies are all disposed inside the chamber body 101. One end of the first air pipe 103, the second air pipe 104, the third air pipe 105, the fourth air pipe 106, the fifth air pipe 107, and the sixth air pipe 108 are respectively fixedly connected to the ten-way valve 102. The other end of the first air pipe 103, the second air pipe 104, the third air pipe 105, the fourth air pipe 106, the fifth air pipe 107, and the sixth air pipe 108 are respectively fixedly connected to the corresponding placement components. The heating component is disposed inside the box 101, and the sealing component is disposed on one side of the box 101.

[0025] In this embodiment, six sample gas bags are placed in multiple sets of placement components. The heating component then heats the interior of the housing 101, causing the organic droplets within the sample gas bags to vaporize. The first gas pipe 103, the second gas pipe 104, the third gas pipe 105, the fourth gas pipe 106, the fifth gas pipe 107, and the sixth gas pipe 108 are then sequentially connected to the metering ring 109 via the ten-way valve 102. This allows the organic gases from the six sample gas bags to sequentially enter the detection device for testing. The ten-way valve 102 further connects the first gas pipe 103, the second gas pipe 104, the third gas pipe 105, the fourth gas pipe 106, the fifth gas pipe 107, and the sixth gas pipe 108. Pipe 104, the third gas pipe 105, the fourth gas pipe 106, the fifth gas pipe 107, and the sixth gas pipe 108 are sequentially connected to the nitrogen pipe 110, allowing high-purity nitrogen gas to enter the first gas pipe 103, the second gas pipe 104, the third gas pipe 105, the fourth gas pipe 106, the fifth gas pipe 107, and the sixth gas pipe 108 respectively, thereby cleaning the pipeline. The inlet pipe 111 is connected to the metering ring 109 through the ten-way valve 102, allowing standard gas to be directly introduced into the detection equipment for detection. The gas in the pipeline can be vented through the vent pipe 112.

[0026] Furthermore, each set of placement components includes a placement box 113, two upright plates 114, a connector 115, and an extrusion member. One end of each of the two upright plates 114 is fixedly connected to the box body 101, and the other end of each of the two upright plates 114 is fixedly connected to the placement box 113. The connector 115 passes through the placement box 113 and is fixedly connected to the placement box 113. The extrusion member is disposed inside the placement box 113.

[0027] In this embodiment, the sample gas bag is placed in the placement box 113, and the opening of the sample gas bag is connected to the connector 115.

[0028] Furthermore, the extrusion component includes a lead screw 116, a motor 117, a moving plate 118, and a pressure plate 119. The moving plate 118 passes through the placement box 113 and is slidably connected to the placement box 113. The lead screw 116 passes through the moving plate 118 and is threadedly engaged with the moving plate 118. The two ends of the lead screw 116 are rotatably connected to the two upright plates 114 respectively. The output end of the motor 117 is fixedly connected to the lead screw 116. The moving plate 118 is fixedly connected to the moving plate 118 and is located at the upper end of the moving plate 118.

[0029] In this embodiment, the motor 117 is started, and the output end of the motor 117 drives the lead screw 116 to rotate, causing the moving plate 118 to move. The moving plate 118 drives the pressure plate 119 to move, thereby squeezing the sample gas bag and causing the gas in the sample gas bag to enter the pipeline.

[0030] Furthermore, the heating assembly includes an electrical control box 120 and a heating mesh 121. The electrical control box 120 is disposed on the outside of the housing 101, and the heating mesh 121 is disposed inside the housing 101. Both ends of the heating mesh 121 pass through the housing 101 and are fixedly connected to the electrical control box 120.

[0031] In this embodiment, the interior of the box 101 is heated by the heating net 121, thereby heating the sample gas bag, and the temperature of the heating net 121 is controlled by the electrical control box 120.

[0032] Furthermore, the sealing assembly includes a door 122, two mounting plates 123, a handle 124, and an observation device. The door 122 is hinged to the box body 101. Both mounting plates 123 are fixedly connected to the door 122 and located on the outside of the door 122. The two ends of the handle 124 are fixedly connected to the two mounting plates 123 respectively. The observation device is fixedly connected to the door 122.

[0033] In this embodiment, the box body 101 is sealed by the box door 122, and the box door 122 is opened and closed by the handle 124.

[0034] Furthermore, the observation element includes a fixed frame 125 and a transparent plate 126. The fixed frame 125 passes through the box door 122 and is fixedly connected to the box door 122. The transparent plate 126 is fixedly connected to the fixed frame 125 and is located inside the fixed frame 125.

[0035] In this embodiment, the transparent plate 126 is fixed by the fixing frame 125, and the transparent plate 126 facilitates observation of the interior of the box 101.

[0036] Furthermore, the sealing assembly includes an anti-slip sleeve 127, which is fitted onto the outside of the grip bar 124.

[0037] In this embodiment, the anti-slip sleeve 127 can enhance the friction of the grip 124.

[0038] The working / implementation / use principle of this utility model is as follows: Six sample gas bags are placed in multiple placement boxes 113 respectively, and the openings of the sample gas bags are connected to the corresponding connectors 115. Then, the interior of the box 101 is heated by the heating net 121, thereby vaporizing the organic droplets in the sample gas bags. Then, the first gas pipe 103, the second gas pipe 104, the third gas pipe 105, the fourth gas pipe 106, the fifth gas pipe 107, and the sixth gas pipe 108 are sequentially connected to the metering ring 109 through the ten-way valve 102, so that the organic gas in the six sample gas bags enters the detection device for detection in sequence. The ten-way valve 102 connects the first gas pipe 103, the second gas pipe 104, the third gas pipe 105, the fourth gas pipe 106, the fifth gas pipe 107, the sixth gas pipe 108, and the metering ring 109 in sequence. The fifth gas pipe 107 and the sixth gas pipe 108 are sequentially connected to the nitrogen pipe 110, allowing high-purity nitrogen to enter the first gas pipe 103, the second gas pipe 104, the third gas pipe 105, the fourth gas pipe 106, the fifth gas pipe 107, and the sixth gas pipe 108 respectively, thereby cleaning the pipeline. The inlet pipe 111 is connected to the metering ring 109 through the ten-way valve 102, allowing standard gas to be directly introduced into the detection equipment for testing. The gas in the pipeline can be vented through the vent pipe 112. This method can effectively solve the problem in the prior art where, during the transfer of collected samples, a sudden drop in temperature causes some volatile organic compounds to condense into organic droplets, which adhere to the inside of the detection equipment and affect the accuracy of the test results.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A volatile organic matter heating box structure with a sample injection function, characterized in that it comprises a box body, a ten-way valve, a first air pipe, a second air pipe, a third air pipe, a fourth air pipe, a fifth air pipe, a sixth air pipe, a metering ring, a nitrogen pipe, an air inlet pipe, an emptying pipe, a heating assembly, a sealing assembly, and multiple sets of placement assemblies, the ten-way valve penetrates through the box body and is fixedly connected with the box body, multiple sets of the placement assemblies are arranged inside the box body, one end of each of the first air pipe, the second air pipe, the third air pipe, the fourth air pipe, the fifth air pipe, and the sixth air pipe is fixedly connected with the ten-way valve, the other end of each of the first air pipe, the second air pipe, the third air pipe, the fourth air pipe, the fifth air pipe, and the sixth air pipe is fixedly connected with a corresponding placement assembly, the heating assembly is arranged inside the box body, and the sealing assembly is arranged on one side of the box body.

2. The volatile organic matter heating box structure with a sample injection function according to claim 1, characterized in that each set of the placement assembly comprises a placement box, two vertical plates, a connecting head, and a pressing piece, one end of each of the two vertical plates is fixedly connected with the box body, the other end of each of the two vertical plates is fixedly connected with the placement box, the connecting head penetrates through the placement box and is fixedly connected with the placement box, and the pressing piece is arranged inside the placement box.

3. The volatile organic matter heating box structure with a sample injection function according to claim 2, characterized in that the pressing piece comprises a lead screw, a motor, a moving plate, and a pressing plate, the moving plate penetrates through the placement box and is slidingly connected with the placement box, the lead screw penetrates through the moving plate and is threadedly matched with the moving plate, both ends of the lead screw are rotationally connected with the two vertical plates, the output end of the motor is fixedly connected with the lead screw, the moving plate is fixedly connected with the pressing plate and is located at the upper end of the moving plate.

4. The volatile organic matter heating box structure with a sample injection function according to claim 3, characterized in that the heating assembly comprises an electric control box and a heating net, the electric control box is arranged outside the box body, the heating net is arranged inside the box body, and both ends of the heating net penetrate through the box body and are fixedly connected with the electric control box.

5. The volatile organic matter heating box structure with a sample injection function according to claim 4, characterized in that the sealing assembly comprises a box door, two mounting plates, a handle, and an observation piece, the box door is hingedly connected with the box body, both of the mounting plates are fixedly connected with the box door and are located outside the box door, both ends of the handle are fixedly connected with the two mounting plates, and the observation piece is fixedly connected with the box door.

6. The volatile organic matter heating box structure with a sample injection function according to claim 5, characterized in that the observation piece comprises a fixed frame and a transparent plate, the fixed frame penetrates through the box door and is fixedly connected with the box door, and the transparent plate is fixedly connected with the fixed frame and is located inside the fixed frame. ​ ​ ​ ​ ​ ​ 7. The volatile organic heating tank structure with a sample injection function according to claim 6, characterized in that, The sealing assembly comprises an anti-skid sleeve, which is sleeved on the outer side of the handle.

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