Multi-channel gas metering and sampling device

Abstract

The utility model belongs to the technical field of gas sampling, and discloses a multi-channel gas metering and sampling device which is technically characterized by comprising a box body, a plurality of groups of uniformly distributed sampling bottles fixedly mounted on the inner bottom wall of the box body, channel pipes fixedly mounted at the top ends of the sampling bottles, a transverse column arranged in an inner cavity of the box body, and a hydraulic cylinder arranged below the transverse column, a gas injection pipe is fixedly connected to the telescopic end of the hydraulic cylinder, a gas guide pipe is connected to the side wall of the gas injection pipe, a sampling mechanism matched with the gas injection pipe is arranged in an inner cavity of the channel pipe and comprises a sealing assembly and a ventilation assembly, and a positioning mechanism matched with the transverse column is arranged on the top wall of the box body. The positioning mechanism comprises a translation assembly and a rotating assembly, and the problems that an existing sampling device can only extract and sample single gas at a time, batch gas cannot be sequentially sampled through a plurality of ventilation pipelines, and the working efficiency is low are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas sampling technical field, concretely is a kind of multichannel gas metering sampling device. BACKGROUND

[0002] Gas analysis is an analysis method for determining the composition of mixed gas by using the different physical and chemical properties of various gases. In industrial production, in order to ensure normal and safe production, various industrial gases must be analyzed to understand their composition. The characteristics of gas analysis are that the gas itself has the characteristics of small mass, large fluidity, and changes with T or P, which determines that the V of the gas is generally measured instead of the mass m, and the I and P of the environment are also measured. Common gas analysis methods include: chemical analysis method (absorption method, combustion method, etc.), physical analysis method (density, thermal conductivity, refractive index, calorific value, etc.), and physical and chemical analysis method (conductivity method, chromatography, infrared spectroscopy, etc.).

[0003] The existing sampling equipment can only extract and sample a single gas at a time, and cannot sample batches of gas through multiple air ducts one after another, resulting in low work efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of multichannel gas metering sampling device to solve the problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A kind of multichannel gas metering sampling device, including box, the bottom wall in box is fixedly installed with multiple groups of evenly distributed sampling bottle, sampling bottle top is fixedly installed with channel pipe, the inner chamber of box is provided with cross column, cross column lower portion is provided with hydraulic cylinder, the telescopic end of hydraulic cylinder is fixedly connected with gas injection pipe, the lateral wall of gas injection pipe is connected with gas guide pipe, the inner chamber of channel pipe is provided with sampling mechanism that is mutually matched with gas injection pipe, the sampling mechanism includes sealing assembly and aeration assembly, the sealing assembly is located in channel pipe, the aeration assembly is located in gas injection pipe, the top wall of box is provided with positioning mechanism that is mutually matched with cross column, the positioning mechanism includes translation assembly and rotation assembly, the translation assembly is located on the surface of cross column and is connected with hydraulic cylinder, the rotation assembly is located on the top wall of box and is connected with cross column.

[0007] As a further scheme of the utility model: the sealing assembly includes sealing plate fixedly installed between the inner wall of channel pipe, the surface of sealing plate is provided with through hole, bottom plate located below sealing plate is fixedly installed between the inner wall of channel pipe, extrusion spring is fixedly installed on the surface of bottom plate, the telescopic end of extrusion spring is fixedly installed with baffle.

[0008] As a further scheme of the utility model: the ventilation assembly includes the top plate fixedly installed between the inner wall of the gas injection pipe, and the push rod is fixedly installed on the bottom wall of the top plate and cooperates with the baffle.

[0009] As a further scheme of the utility model: the translation assembly includes the sliding groove opened on the bottom wall of the horizontal column, the threaded rod is rotationally installed in the sliding groove, the sliding block is threadedly connected on the surface of the threaded rod, the sliding block is slidingly connected with the sliding groove, the bottom wall of the sliding block extends to the outside of the horizontal column and is connected with the hydraulic cylinder, and one end of the threaded rod is connected with the motor.

[0010] As a further scheme of the utility model: the rotation assembly includes the rotating column rotationally installed on the top wall of the box body, the bottom end of the rotating column is fixedly connected with the horizontal column, the top end of the rotating column extends to the outside of the box body and is connected with the control panel, the top wall of the box body is provided with a plurality of clamping grooves distributed in a ring shape around the control panel, and the clamping rod is rotationally installed on the surface of the control panel and cooperates with the clamping groove.

[0011] Compared with the prior art, the utility model has the beneficial effects that: through the cooperation of the translation assembly and the rotation assembly, the position of the gas injection pipe can be conveniently adjusted, the gas injection pipe can be connected with the channel pipes at different positions, different sampling bottles can be sequentially sampled, and the problems of the prior sampling equipment that can only sample a single gas at a time, cannot sequentially sample batch gases through multiple ventilation pipes and has low work efficiency are solved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of a multi-channel gas metering sampling device.

[0013] Figure 2 It is Figure 1 It is an enlarged structural schematic view of A.

[0014] Figure 3 It is a top view structural schematic view of the control panel in the multi-channel gas metering sampling device.

[0015] Among them: 1-box body, 2-sampling bottle, 3-channel pipe, 4-horizontal column, 5-hydraulic cylinder, 6-gas injection pipe, 61-gas guide pipe, 7-sampling mechanism, 71-sealing assembly, 711-sealing plate, 712-through hole, 713-bottom plate, 714-pressing spring, 715-baffle, 72-ventilation assembly, 721-top plate, 722-push rod, 8-positioning mechanism, 81-translation assembly, 811-sliding groove, 812-threaded rod, 813-sliding block, 814-motor, 82-rotation assembly, 821-rotating column, 822-control panel, 823-clamping groove, 824-clamping rod. DETAILED DESCRIPTION

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0019] like Figure 1 , Figure 2 The diagram shown illustrates the structure of a multi-channel gas metering and sampling device according to an embodiment of this utility model. It includes a housing 1, with multiple uniformly distributed sampling bottles 2 fixedly installed on the bottom wall of the housing 1. A channel tube 3 is fixedly installed at the top of each sampling bottle 2. A horizontal column 4 is arranged inside the housing 1, and a hydraulic cylinder 5 is located below the horizontal column 4. A gas injection pipe 6 is fixedly connected to the telescopic end of the hydraulic cylinder 5. A gas guide pipe 61 is connected to the side wall of the gas injection pipe 6. A sampling mechanism 7, cooperating with the gas injection pipe 6, is arranged inside the channel tube 3. The sampling mechanism 7 includes a sealing component 71 and a venting component 72. The sealing component 71 is located inside the channel tube 3, and the venting component 72 is located inside the gas injection pipe 6. A positioning mechanism 8, cooperating with the horizontal column 4, is arranged on the top wall of the housing 1. The positioning mechanism 8 includes a translation component 81 and a rotation component 82. The translation component 81 is located on the surface of the horizontal column 4 and connected to the hydraulic cylinder 5, while the rotation component 82 is located on the top wall of the housing 1 and connected to the horizontal column 4.

[0020] Initially, the sealing component 71 controls the channel tube 3 to be in a sealed state. During use, the hydraulic cylinder 5 pushes the gas injection tube 6 downward. When the gas injection tube 6 is sleeved on the outside of the channel tube 3, the sealing component 71 and the venting component 72 cooperate to control the channel tube 3 and the gas injection tube 6 to be in a connected state. The sampling gas can be conveniently delivered to the sampling bottle 2 through the gas guide tube 61. When different sampling gases need to be placed in the sampling bottles 2 at the corresponding positions, the translation component 81 controls the hydraulic cylinder 5 and the gas injection tube 6 to translate horizontally. The rotation component 82 cooperates with the horizontal column 4 to control the gas injection tube 6 to rotate in the horizontal plane, thereby controlling the gas injection tube 6 to move in all directions within the cavity of the box 1. The gas injection tube 6 can connect the channel tube 3 at the top of different sampling bottles 2.

[0021] like Figure 1、 Figure 2 As shown in the preferred embodiment of the utility model, the sealing assembly 71 includes a sealing plate 711 fixedly installed between the inner walls of the channel pipe 3, a through hole 712 is formed on the surface of the sealing plate 711, a bottom plate 713 is fixedly installed below the sealing plate 711 between the inner walls of the channel pipe 3, an extrusion spring 714 is fixedly installed on the surface of the bottom plate 713, a baffle 715 is fixedly installed at the telescopic end of the extrusion spring 714, in use, the extrusion spring 714 exerts a pushing force on the baffle 715, at this time, the baffle 715 is attached to the bottom wall of the sealing plate 711, the baffle 715 controls the through hole 712 to be in a sealed state, when the gas injection pipe 6 is sleeved on the outer side of the channel pipe 3, the ventilation assembly 72 controls the baffle 715 to move downward, the baffle 715 is separated from the sealing plate 711, at this time, the through hole 712 is in a through state, which is convenient for sampling gas.

[0022] As shown in the preferred embodiment of the utility model, Figure 1 、 Figure 2 As shown in the preferred embodiment of the utility model, the ventilation assembly 782 includes a top plate 721 fixedly installed between the inner walls of the gas injection pipe 6, a push rod 722 is fixedly installed on the bottom wall of the top plate 721 and cooperates with the baffle 715. In use, the gas injection pipe 6 moves vertically downward and drives the push rod 722 to move downward synchronously, the push rod 722 can push the baffle 715 to move downward synchronously.

[0023] As shown in the preferred embodiment of the utility model, Figure 1 、 Figure 2 As shown in the preferred embodiment of the utility model, the translation assembly 81 includes a sliding groove 811 formed on the bottom wall of the horizontal column 4, a threaded rod 812 is rotatably installed in the sliding groove 811, a sliding block 813 is threadedly connected to the surface of the threaded rod 812, the sliding block 813 is slidably connected to the sliding groove 811, the bottom wall of the sliding block 813 extends to the outer side of the horizontal column 4 and is connected to the hydraulic cylinder 5, one end of the threaded rod 812 is connected to a motor 814, in use, the motor 814 drives the threaded rod 812 to rotate, the threaded rod 812 pushes the sliding block 813 to move in the sliding groove 811, and the sliding block 813 drives the hydraulic cylinder 5 to move synchronously in the inner cavity of the box body 1.

[0024] As shown in the preferred embodiment of the utility model, Figure 1 、 Figure 2 、 Figure 3 As shown in the preferred embodiment of the utility model, the rotation assembly 82 includes a rotating column 821 rotatably installed on the top wall of the box body 1, the bottom end of the rotating column 821 is fixedly connected to the horizontal column 4, the top end of the rotating column 821 extends to the outer side of the box body 1 and is connected to a control disc 822, a plurality of clamping grooves 823 are formed on the top wall of the box body 1 and are annularly distributed around the control disc 822, a clamping rod 824 is rotatably installed on the surface of the control disc 822 and cooperates with the clamping grooves 823.

[0025] The utility model discloses a working principle is: initial, sealing assembly 71 control passageway pipe 3 is in sealed state, in use, the hydraulic cylinder 5 promotes the gas injection pipe 6 to move down, when the gas injection pipe 6 is sleeved in passageway pipe 3 outside, sealing assembly 71 and the ventilation assembly 72 intercoordination, can control passageway pipe 3 with the gas injection pipe 6 between in the intercommunication state, through the gas guide pipe 61 can conveniently transport the sample gas to the sampling bottle 2, when needing to place different sample gas in the sampling bottle 2 of corresponding position, the translation assembly 81 control hydraulic cylinder 5 and the gas injection pipe 6 are in horizontal direction translation, the rotary component 82 with cross column 4 intercoordination, can control the gas injection pipe 6 in horizontal plane rotates, and then can control the gas injection pipe 6 in the chamber 1 cavity carries out all -round movement, and the gas injection pipe 6 can be connected to the passageway pipe 3 of different sampling bottle 2 top.

[0026] The above detailed description of the preferred embodiments of the present patent, but the present patent is not limited to the above-mentioned embodiments, within the knowledge of those skilled in the art, various changes can be made without departing from the purpose of the present patent.

Claims

1. A multi-channel gas metering and sampling device, comprising a housing, characterized in that, Multiple evenly distributed sampling bottles are fixedly installed on the bottom wall of the chamber. A channel tube is fixedly installed on the top of each sampling bottle. A horizontal column is installed in the inner cavity of the chamber, and a hydraulic cylinder is installed below the horizontal column. The telescopic end of the hydraulic cylinder is fixedly connected to an injection tube. A gas guide tube is connected to the side wall of the injection tube. A sampling mechanism that cooperates with the injection tube is installed in the inner cavity of the channel tube. The sampling mechanism includes a sealing component and a venting component. The sealing component is located inside the channel tube, and the venting component is located inside the injection tube. A positioning mechanism that cooperates with the horizontal column is installed on the top wall of the chamber. The positioning mechanism includes a translation component and a rotation component. The translation component is located on the surface of the horizontal column and connected to the hydraulic cylinder, and the rotation component is located on the top wall of the chamber and connected to the horizontal column.

2. The multi-channel gas metering and sampling device according to claim 1, characterized in that, The sealing assembly includes a sealing plate fixedly installed between the inner walls of the channel tube, a through hole on the surface of the sealing plate, a base plate fixedly installed between the inner walls of the channel tube below the sealing plate, a compression spring fixedly installed on the surface of the base plate, and a baffle fixedly installed on the extension end of the compression spring.

3. The multi-channel gas metering and sampling device according to claim 2, characterized in that, The ventilation assembly includes a top plate fixedly installed between the inner walls of the air injection pipe, and a push rod that cooperates with the baffle is fixedly installed on the bottom wall of the top plate.

4. The multi-channel gas metering and sampling device according to claim 1, characterized in that, The translation component includes a groove opened in the bottom wall of the horizontal column, a threaded rod rotatably installed in the groove, a sliding block threadedly connected to the surface of the threaded rod, the sliding block being slidably connected to the groove, the bottom wall of the sliding block extending to the outside of the horizontal column and connected to a hydraulic cylinder, and a motor connected to one end of the threaded rod.

5. The multi-channel gas metering and sampling device according to claim 4, characterized in that, The rotating assembly includes a rotating column rotatably mounted on the top wall of the housing. The bottom end of the rotating column is fixedly connected to a horizontal column, and the top end of the rotating column extends to the outside of the housing and is connected to a control panel. The top wall of the housing has multiple sets of snap-fit ​​grooves arranged in a ring around the control panel. Snap-fit ​​rods that cooperate with the snap-fit ​​grooves are rotatably mounted on the surface of the control panel.

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