Linear gas distribution device for gas concentration measuring instrument

Abstract

The utility model relates to the technical field of gas distribution devices, and discloses a linear gas distribution device for a gas concentration measuring instrument, which comprises a box body, the top end of the box body is hinged with a top cover, the upper surface of the box body is fixedly provided with a gas inlet nozzle, and the gas inlet nozzle is provided with a gas outlet. And an air entraining mechanism is arranged at the bottom of the air inlet nozzle. According to the linear gas distribution device for the gas concentration measuring instrument, the air entraining mechanism is arranged and matched with extrusion and pushing of airflow in the gas inlet nozzle to a circular plate, under pulling of a pull rope, a wind shield slides along an air entraining groove, the wind shield cannot be completely exposed out of the air entraining groove, the airflow can still downwards push the circular plate, and the circular plate is prevented from being damaged. At the moment, the air inducing plate is in a triangular shape with an arc-shaped surface, so that the air flow can be diffused to the periphery of the box body when passing through the air inducing groove and the air inducing plate, and the dispersion effect of the air input into the box body is improved, so that the air distribution operation efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas distribution devices, in particular to a gas distribution device used for the linearity of a gas concentration measuring instrument. Background Art

[0002] A gas mixer is an instrument used to mix two or more gases (mostly two gases on the market) in a certain proportion and output gas of a set concentration.

[0003] According to a publicly disclosed dynamic gas distribution instrument (publication number: CN202478878U), in the above application, a new gas mixing chamber is used for heating, and the dilution gas inlet pipe and the electric heating wire are directly wound from top to bottom in the spiral groove on the surface of the mixing chamber. In combination with a high-precision temperature controller, the heating speed is fast (heating to 50°C in about 10 minutes), the constant temperature effect is good, and the temperature fluctuation is less than ±0.1°C.

[0004] However, in actual use of the above-mentioned equipment, two or more gases need to be mixed in the gas distribution box during the gas distribution process, but the gas input is all input from the air inlet. The gas mixing time in the gas distribution box is relatively long, which reduces the overall gas distribution efficiency of the gas distribution box. In view of this, we propose a linear gas distribution device for gas concentration measuring instruments. Utility Model Content

[0005] The utility model aims to provide a linear gas distribution device for a gas concentration measuring instrument to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a linear gas distribution device for a gas concentration measuring instrument, comprising a box, a top cover is hingedly connected to the top of the box, an air inlet nozzle is fixedly installed on the upper surface of the box, and an air inlet mechanism is arranged at the bottom of the air inlet nozzle, and the air inlet mechanism comprises:

[0007] An elastic telescopic rod, the inner wall of the air inlet nozzle is fixedly mounted with the top of the elastic telescopic rod, the bottom end of the elastic telescopic rod is fixedly connected with a circular plate, the inner wall of the circular plate is provided with an air induction groove, and the inner wall of the air induction groove is slidably mounted with a wind shield plate;

[0008] An elastic telescopic sleeve, the inner wall of the air inlet nozzle is fixedly connected with an elastic telescopic sleeve, the inner wall of the air inlet nozzle is fixedly connected with a pull rope, the end of the pull rope is fixedly connected to the inner wall of the wind shield, the inner wall of the air inlet groove is rotatably mounted with a guide wheel, the guide wheel is transmission-connected with the pull rope, the elastic telescopic sleeve includes a fixed cylinder and a sliding cylinder, and a reset spring 2 is fixedly connected between the top inner wall of the fixed cylinder and the top outer wall of the sliding cylinder;

[0009] An air induction plate is fixedly installed on the inner wall of the air induction groove, a round rod is slidably installed on the inner wall of the air induction plate, and a return spring 1 is fixedly connected between the round rod and the inner wall of the air induction plate.

[0010] Preferably, a mounting hole adapted to the elastic telescopic rod is provided on the inner wall of the bottom of the air inlet nozzle, and the elastic telescopic rod is arranged in the mounting hole to ensure the stability of the circular plate when it moves under the influence of the airflow.

[0011] Preferably, the sliding cylinder of the elastic telescopic sleeve is hollow to facilitate the installation, contraction and extension of the pull rope, and the guide wheel is adapted to the pull rope so that the guide wheel can change the direction of the force of the pull rope.

[0012] Preferably, the air induction plate is arranged in a triangular shape, and the inclined surfaces on the left and right sides of the air induction plate are arranged in an arc shape, so as to better guide and diffuse the airflow passing through the air induction slot, thereby improving the airflow mixing efficiency of the device.

[0013] Preferably, a rotating block is rotatably mounted on the upper surface of the circular plate, and a blade is fixedly mounted on the arc-shaped outer wall of the rotating block.

[0014] Preferably, the blade is arranged in a wave shape, and is arranged in an inclined shape between the blade and the central axis of the air inlet nozzle, so that the airflow blown from the air inlet nozzle can affect the blade, thereby driving the blade and the rotating block to rotate on the upper surface of the circular plate.

[0015] Compared with the prior art, the utility model provides a linear gas distribution device for a gas concentration measuring instrument, which has the following beneficial effects:

[0016] 1. The linear gas distribution device for the gas concentration measuring instrument is provided with an air induced mechanism, which cooperates with the air flow in the air inlet nozzle to squeeze and push the circular plate. Under the pull of the pull rope, the wind shield slides along the air induced groove, and because the wind shield will not be completely exposed from the air induced groove, the air flow will still push the circular plate downward. At this time, since the air induced plate has a triangular shape with an arc surface, the air flow will diffuse to the periphery of the box when passing through the air induced groove and the air induced plate, thereby improving the dispersion effect of the gas input into the box, so as to improve the gas distribution operation efficiency of the device.

[0017] 2. The linear gas distribution device for gas concentration measuring instruments has a rotating block rotatably arranged on the upper surface of a circular plate, and cooperates with a vane arranged in a wave shape on the arc-shaped outer wall of the rotating block, so that the airflow blown in from the air inlet nozzle can affect the vane, thereby driving the vane and the rotating block to rotate on the upper surface of the circular plate, thereby continuously affecting the airflow entering the box, so as to enable the gas required for gas distribution to diffuse faster, thereby improving the gas distribution operation efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the utility model in which the top cover is opened;

[0020] Figure 3 This is a schematic diagram of the structure of the air inlet nozzle of the utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the circular plate of the utility model;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of a circular plate of the utility model;

[0023] Figure 6 It is a schematic diagram of a partial explosion of the air entrainment mechanism of the utility model.

[0024] In the figure: 1. box body; 2. top cover; 3. air inlet nozzle; 4. elastic telescopic rod; 5. round plate; 6. air inlet groove; 7. wind shield; 8. elastic telescopic sleeve; 9. pull rope; 10. guide wheel; 11. air inlet plate; 12. round rod; 13. reset spring 1; 14. reset spring 2; 15. rotating block; 16. blade. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 6 As shown, the utility model provides a technical solution: a linear gas distribution device for a gas concentration measuring instrument, comprising a box body 1, a top cover 2 is hinged on the top of the box body 1, an air inlet nozzle 3 is fixedly installed on the upper surface of the box body 1, and an air bleed mechanism is arranged at the bottom of the air inlet nozzle 3, and the air bleed mechanism comprises an elastic telescopic rod 4, a circular plate 5, an air induced groove 6, a wind shield plate 7, an elastic telescopic sleeve 8, a pull rope 9, a guide wheel 10, an air induced plate 11, a round rod 12 and a reset spring 13 and a reset spring 2 14.

[0026] In one embodiment of the utility model, the top end of an elastic telescopic rod 4 is fixedly mounted on the inner wall of the air inlet nozzle 3, a circular plate 5 is fixedly connected to the bottom end of the elastic telescopic rod 4, an air ducting groove 6 is opened on the inner wall of the circular plate 5, a wind shield 7 is slidably mounted on the inner wall of the air ducting groove 6, an elastic telescopic sleeve 8 is fixedly mounted on the inner wall of the air inlet nozzle 3, a pull rope 9 is fixedly mounted on the inner wall of the air inlet nozzle 3, an end of the pull rope 9 is fixedly connected to the inner wall of the wind shield 7, a guide wheel 10 is rotatably mounted on the inner wall of the air ducting groove 6, the guide wheel 10 is transmission-connected to the pull rope 9, an air ducting plate 11 is fixedly mounted on the inner wall of the air ducting groove 6, a round rod 12 is slidably mounted on the inner wall of the air ducting plate 11, a return spring 13 is fixedly connected to the round rod 12 and the inner wall of the air ducting plate 11, the elastic telescopic sleeve 8 includes a fixed cylinder and a sliding cylinder, a return spring 2 14 is fixedly connected between the top inner wall of the fixed cylinder and the top outer wall of the sliding cylinder.

[0027] Furthermore, a handle is provided on the top cover 2, and a lock is provided on the side of the box 1, so that the staff can carry the equipment to other locations conveniently, thereby improving the convenience of use of the device. At the same time, a corresponding touch screen and a power socket are provided on the upper surface of the box 1 to facilitate the staff to operate. In addition, a plurality of groups of air inlet nozzles 3 are provided on the upper surface of the box 1 to facilitate the operator to supply different gases separately to prevent gas leakage during the gas distribution process, and an exhaust valve is provided on the front of the box 1 to discharge the remaining gas in the box 1 after the gas distribution operation is completed, so as to facilitate the next gas distribution work, and a corresponding gas concentration measuring instrument is provided in the internal space of the box 1 to measure the gas concentration and mixing condition input into the box 1, and the measurement result is directly displayed on the touch screen provided on the top of the box 1.

[0028] In addition, a mounting hole matched with the elastic telescopic rod 4 is provided on the bottom inner wall of the air inlet nozzle 3, and the elastic telescopic rod 4 is arranged in the mounting hole. At the same time, in the initial state of the elastic telescopic rod 4, the elastic force of the elastic telescopic rod 4 pulls the circular plate 5, so that the circular plate 5 is tightly fitted on the bottom outer wall of the air inlet nozzle 3, so that the air inlet nozzle 3 is in a closed state when no gas is input, thereby avoiding air leakage from the air inlet nozzle 3 and avoiding air leakage from the air inlet nozzle 3 when other gases are input. Furthermore, the air inlet groove 6 is provided at the center of the circular plate 5, and the wind shield plate 7 is matched with the air inlet groove 6, so that the wind shield plate 7 can slide horizontally along the air inlet groove 6. In addition, the sliding tube of the elastic telescopic sleeve 8 is hollow. , to facilitate the installation, contraction and extension of the pull rope 9. At the same time, the guide wheel 10 is adapted to the pull rope 9, so that the guide wheel 10 can change the direction of the force of the pull rope 9, so that when the air is input into the air at the air inlet nozzle 3, due to the influence of the elastic telescopic rod 4, the circular plate 5 moves downward under the influence of the air pressure. At this time, under the influence of the relative movement between the air inlet nozzle 3 and the circular plate 5, the pull rope 9 will pull the wind shield plate 7 along the air induction groove 6 toward the side away from the center of the circular plate 5, thereby exposing the air induction groove 6, so that the airflow entering the interior of the box body 1 through the air inlet nozzle 3 will be affected by the circular plate 5 and the air induction groove 6 and dispersed, thereby promoting faster diffusion of the gas, facilitating faster mixing of the air distribution entering the interior of the box body 1, and improving the air distribution efficiency of the equipment.

[0029] At the same time, a storage groove matched with the size of the air guide plate 11 is opened on the inner wall of the wind shield plate 7 close to the center of the circular plate 5, and the air guide plate 11 is arranged in a triangular shape. Specifically, the inclined surfaces on the left and right sides of the air guide plate 11 are arranged in an arc shape, so as to better guide and diffuse the airflow passing through the air guide groove 6, thereby improving the airflow mixing efficiency of the device. The end of the round rod 12 is fixedly connected to the inner wall of the storage groove, so that when the wind shield plate 7 slides along the air guide groove 6, due to the setting of the reset spring 13, the wind shield plate 7 can be reset when the air inlet nozzle 3 no longer inputs airflow, thereby closing the air guide groove 6 to ensure that the air inlet nozzle 3 will not leak.

[0030] In an embodiment of the utility model, a rotating block 15 is rotatably mounted on the upper surface of the circular plate 5, and a blade 16 is fixedly mounted on the arc-shaped outer wall of the rotating block 15. Specifically, the rotating block 15 is arranged at the center of the circular plate 5, and the top of the rotating block 15 is arranged in a cone shape to better guide the airflow so that it affects the blade 16 on the side of the rotating block 15. At the same time, the blade 16 is arranged in a wave shape, and the blade 16 is inclined to the central axis of the air inlet nozzle 3, so that the airflow blown in from the air inlet nozzle 3 can affect the blade 16, thereby driving the blade 16 and the rotating block 15 to rotate on the upper surface of the circular plate 5, thereby continuously affecting the airflow entering the box body 1, so as to enable the gas required for gas distribution to diffuse faster, thereby improving the gas distribution operation efficiency of the device.

[0031] In the utility model, when in use, the box body 1 is placed in the target position, the top cover 2 is opened at the same time, the external gas storage device is connected to the air inlet nozzle 3 through a pipeline, and the valve of the external gas storage device is opened, so that the gas that needs to be matched is input into the box body 1 through the air inlet nozzle 3. At this time, a gas storage device of another different gas can be connected to the air inlet nozzle 3 set above another box body 1 through a pipeline, so that different gases are input into the box body 1, thereby completing the gas matching and mixing work. At the same time, due to the provision of an air ducting mechanism, the circular plate 5 is squeezed and pushed by the air flow in the air inlet nozzle 3. Under the pull of the pull rope 9, the wind shield plate 7 slides along the air duct groove 6, and because the wind shield plate 7 will not completely expose the air duct groove 6, the air flow will still push the circular plate 5 downward. At this time, due to the triangular shape of the air duct plate 11 set in an arc surface, the air flow will diffuse to the periphery of the box body 1 when passing through the air duct groove 6 and the air duct plate 11, thereby improving the dispersion effect of the gas input into the internal part of the box body 1, so as to improve the gas matching operation efficiency of the device.

[0032] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A linear gas distribution device for a gas concentration measuring instrument, comprising a box (1), a top cover (2) hingedly connected to the top of the box (1), and an air inlet nozzle (3) fixedly mounted on the upper surface of the box (1), characterized in that: An air inlet mechanism is provided at the bottom of the air inlet nozzle (3), and the air inlet mechanism comprises: An elastic telescopic rod (4), the top end of the elastic telescopic rod (4) is fixedly mounted on the inner wall of the air inlet nozzle (3), the bottom end of the elastic telescopic rod (4) is fixedly connected to a circular plate (5), the inner wall of the circular plate (5) is provided with an air induction groove (6), and the inner wall of the air induction groove (6) is slidably mounted with a wind shield (7); An elastic telescopic sleeve (8), the inner wall of the air inlet nozzle (3) is fixedly connected with the elastic telescopic sleeve (8), the inner wall of the air inlet nozzle (3) is fixedly connected with a pull rope (9), the end of the pull rope (9) is fixedly connected to the inner wall of the wind shield (7), the inner wall of the air inlet groove (6) is rotatably mounted with a guide wheel (10), the guide wheel (10) is transmission-connected to the pull rope (9), the elastic telescopic sleeve (8) includes a fixed cylinder and a sliding cylinder, and a return spring 2 (14) is fixedly connected between the top inner wall of the fixed cylinder and the top outer wall of the sliding cylinder; An air induction plate (11), the inner wall of the air induction groove (6) is fixedly mounted with the air induction plate (11), the inner wall of the air induction plate (11) is slidably mounted with a round rod (12), and a return spring (13) is fixedly connected between the round rod (12) and the inner wall of the air induction plate (11).

2. A linear gas distribution device for a gas concentration measuring instrument according to claim 1, characterized in that: A mounting hole adapted to the elastic telescopic rod (4) is provided on the inner wall of the bottom of the air inlet nozzle (3), and the elastic telescopic rod (4) is arranged in the mounting hole.

3. A linear gas distribution device for a gas concentration measuring instrument according to claim 1, characterized in that: The sliding cylinder of the elastic telescopic sleeve (8) is arranged in a hollow shape, and the guide wheel (10) is adapted to the pull rope (9).

4. A linear gas distribution device for a gas concentration measuring instrument according to claim 1, characterized in that: The air induction plate (11) is arranged in a triangular shape, and the inclined surfaces on the left and right sides of the air induction plate (11) are arranged in an arc shape.

5. A linear gas distribution device for a gas concentration measuring instrument according to claim 1, characterized in that: A rotating block (15) is rotatably mounted on the upper surface of the circular plate (5), and a blade plate (16) is fixedly mounted on the arc-shaped outer wall of the rotating block (15).

6. A linear gas distribution device for a gas concentration measuring instrument according to claim 5, characterized in that: The blade (16) is arranged in a wave shape, and the blade (16) is arranged in an inclined shape with respect to the central axis of the air inlet nozzle (3).

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