CN106168547A - A kind of bionical gas absorption sampling apparatus - Google Patents

Abstract

A bionic gas adsorption sampling device belongs to the technical field of mechanical engineering. The outer casing of the present invention is provided with 85 holes, wherein the 72 holes of the right casing I are arranged in six layers, and 12 holes in each layer are evenly distributed on the outer circumference of the layer. On the top, 30 fan-shaped bionic baffles are divided into five layers, arranged at intervals in the middle of the six-layer holes of the right shell Ⅰ, the bionic baffles on adjacent layers are arranged in a staggered manner, and 109 holes are set on the inner shell; 8 wind direction sensors are divided into The two groups are evenly distributed on the cylindrical surface of the base; the bottom ends of the inner and outer shells are threadedly connected with the shell base; the left end of the connecting rod I is fixedly connected with the right end of the shell base, and the right end of the connecting rod I passes through the driving hinge I, the connecting rod II, and the driving hinge II is movably connected with the upper end of the base; the gas adsorbent is placed in the inner shell; the present invention can change the orientation of the adsorption device according to different wind directions in the working state to achieve the best adsorption effect and improve the sampling rate, while the bionic baffle convection The change of the field can prolong the adsorption time of the adsorbent on the flowing gas and improve the adsorption efficiency.

Description

A bionic gas adsorption sampling device

technical field

The invention belongs to the technical field of mechanical engineering, and in particular relates to a bionic gas adsorption sampling device.

Background technique

Gas adsorption sampling is widely used in analytical chemistry experiments and gas detection in environmental hygiene. Facing the situation where the content of the substance to be measured is scarce, it is necessary to first enrich and sample the gas through an adsorption device before measuring it. Therefore, the gas adsorption rate has an important impact on the accuracy and accuracy of gas detection. With the gradual increase in monitoring efforts and sampling requirements, the requirements for adsorption devices are becoming more and more stringent and diverse, requiring more convenient and efficient adsorption devices. Moreover, the actual sampling environment is complex and changeable, such as the measured gas flow direction is changeable, etc., it is necessary to automatically adjust the position of the adsorption device to improve the adsorption efficiency.

The sensitive olfactory function of the snake tongue plays an important role in its physiological activities. Studies have found that there are a large number of microfacets, micropores and sheet-like folds on the surface of the snake tongue. The structure changes the distribution of the air flow field, which can prolong the contact time between the tongue and the odor molecules, improve the gas adsorption efficiency, and enhance the sensitivity of the sense of smell.

Sunflowers will change the orientation of their flower discs according to the different positions of the sun, so as to make full use of sunlight. Based on this, it is of great significance to design the bionic function of the automatic adjustment function of the gas adsorption sampling device.

Contents of the invention

The purpose of the present invention is to provide a bionic gas adsorption sampling device capable of improving gas adsorption rate and efficiency. The bionic device designs the shell structure of the adsorption chamber of the adsorption sampling device according to the distribution of a large number of microfacets, micropores and sheet-like folds on the surface of the snake tongue to improve the gas adsorption efficiency; the adsorption sampling device is designed according to the sunflower changing the orientation of its flower disc according to the different positions of the sun Automatically adjust the mechanism, so as to realize the adaptation to different wind directions and improve the adsorption rate.

The present invention is composed of an outer shell A, an inner shell B, a shell base C, a wind direction sensor group D, a connecting rod I1, a driving hinge I2, a connecting rod II3, a driving hinge II4, a base 5 and a gas adsorbent 6, and the shell The base C is formed by solidly connecting the outer shell base 17 and the inner shell base 19. Both the outer shell base 17 and the inner shell base 19 are cylindrical. The edge of the outer shell base 17 is provided with external threads I16, and the edge of the inner shell base 19 is provided with external threads II18;

The outer shell base diameter d ₅ is 50mm, the outer shell base height h ₁ is 5-10mm; the inner shell base diameter d ₆ is 40mm, the inner shell base height h ₂ is 5-10mm; the base 5 is a cylinder, and the base diameter d ₇ 60-80mm, base height h3 is _20-30mm ; wind direction sensor group D is made up of 8 wind direction sensors 20, and 8 wind direction sensors 20 are divided into two groups and evenly distributed on the cylindrical surface of base 5, two groups of wind direction sensors The spacing L ₇ of 20 is 5-8mm; the internal thread I11 of the right housing I8 in the outer shell A is threadedly connected with the external thread I16 of the shell base 17 in the shell base C; the internal thread of the right shell II13 in the inner shell B Ⅱ15 is threadedly connected with the external thread Ⅱ18 of the inner shell base 19 in the shell base C; the left end of the connecting rod I1 is fixedly connected with the right end of the shell base 17 of the shell base C, and the right end of the connecting rod I1 is connected with the upper end of the connecting rod II3 through the drive hinge I2. , which can realize the rotation of the sampling device in the vertical direction; the lower end of the connecting rod II3 is flexibly connected with the center of the upper end of the base 5 through the drive hinge II4, which can realize the rotation of the sampling device in the horizontal direction; the gas adsorbent 6 is placed in the space of the inner casing B In the cavity, the adsorption of the required sampling gas can be realized.

The outer casing A is composed of a left casing I7, a right casing I8 and a bionic baffle 10, wherein the left casing I7 is hemispherical, and its radius _r1 is 25mm; the right casing I8 is a cylindrical tube, and its outer _The circle diameter d1 is 50mm, the length L1 is _78-80mm , the right housing I8 is provided with an internal thread I11 near the right end; the left housing I7 is provided with 13 holes I9, which are arranged in three layers from top to bottom, among which the hemisphere There is one on the top, and six on each of the other two layers, which are evenly distributed on the circumference of the layer, and the distance L2 between the _two layers is 10mm; there are 72 holes I9 on the right shell I8, which are divided into six holes from left to right. Layer arrangement, 12 holes in each layer are evenly distributed on the outer circumference of the layer, and the holes I9 of the two adjacent layers are not misaligned, and the distance L3 between each _two layers is 10mm; the diameter _d2 of the hole I is 3mm; the left shell The wall thickness _t1 of I7 and right housing I8 is 2-4mm; the right end of left housing I7 is fixedly connected with the left end of right housing I8; there are 30 bionic baffles 10, and each bionic baffle 10 is composed of two concentric arcs Composed fan ring, wherein the small arc radius r ₂ is 25mm, the large arc radius r ₃ is 30mm, the central angle β of the two arcs is 40°, the thickness t ₂ of the bionic baffle is 2-4mm; the bionic baffle 10 Divided into five layers, 6 of each layer are evenly distributed and fixed on the outer circumference of the right casing I8, and five layers of bionic baffles 10 are arranged at intervals in the middle of the six-layer hole I9 of the right casing I8; each bionic baffle The center of 10 is on a straight line with the center of the shell hole 2 of the two adjacent layers; the bionic baffles 10 of adjacent layers are arranged in a staggered manner, and the stagger angle α is 30°; the fan-shaped plane of the bionic baffle 10 and the longitudinal The axis is vertical.

The inner casing B is composed of a left casing II12 and a right casing II13, wherein the left casing II12 is hemispherical, the radius _r4 is 20mm, and the right casing II13 is a cylindrical tube, and its outer circle diameter _d3 is 40mm, length L ₄ is 60-65mm, and the right end of the right housing Ⅱ13 is provided with an internal thread Ⅱ15;

There are 13 holes II14 on the left shell II12, which are arranged in three layers from top to bottom, of which there is one hole at the top of the hemisphere, and six holes on each of the other two layers, which are evenly distributed on the circumference of the layer, and the distance between the two layers L ₅ is 8mm; there are 96 holes II14 on the right housing II13, and six layers are arranged from left to right, and each layer has 16 holes evenly distributed on the outer circumference of the layer, and the holes II14 of two adjacent layers are not misaligned. , the distance L ₆ between each two layers is 8mm; the diameter d ₄ of hole II is 3mm;

The wall thickness _t3 of the left housing II12 and the right housing II13 is 2-4 mm; the right end of the left housing II12 is fixedly connected with the left end of the right housing II13.

The working process and principle of the present invention are as follows: when the airflow containing the sampling gas flows through the sampling device, two groups of wind direction sensors 20 on the base 5 sense and judge the wind speed and direction, and the connecting rod I1 is driven by the driving hinge I2 and the driving hinge II4. and the connecting rod II 3 rotate the response angle to achieve the best adsorption effect that the tip of the outer shell A is facing the direction of the incoming wind and improve the adsorption rate.

During the gas adsorption process, the outer shell A blocks and filters out large particle pollutants, the air flow passes through the bionic baffle 10 on the outer shell A, the air flow is disturbed, the flow field of the air flow changes, the flow velocity decreases, and the contact time between the gas and the outer shell A Extending, so that more gas is adsorbed by the gas adsorbent in the inner shell B through the hole I9 and the hole II14, which improves the adsorption efficiency.

The present invention can change the orientation of the adsorption device according to different wind directions in the working state to achieve the best adsorption effect and increase the sampling rate, and at the same time, the change of the flow field by the bionic baffle can prolong the adsorption time of the adsorbent to the flowing gas and improve the adsorption efficiency.

Description of drawings

Figure 1 is a schematic diagram of the bionic gas adsorption sampling device

Figure 2 is the front view of the outer casing

Figure 3 is the left view of the outer casing

Figure 4 is a schematic cross-sectional view of a-a in Figure 2

Figure 5 is a schematic diagram of the structure of the bionic baffle

Figure 6 is the front view of the inner shell

Figure 7 is a left side view of the inner housing

Figure 8 is the front view of the housing base

Figure 9 is a left side view of the housing base

Figure 10 is the front view of the base

Figure 11 is a top view of the base

Among them: A. Outer shell B. Inner shell C. Shell base D. Wind direction sensor group 1. Connecting rod Ⅰ 2. Driving hinge Ⅰ 3. Connecting rod Ⅱ 4. Driving hinge Ⅱ 5. Base 6. Gas adsorbent 7. Left shell Ⅰ 8. Right shell Ⅰ 9. Hole Ⅰ 10. Bionic baffle 11. Internal thread Ⅰ 12. Left shell Ⅱ 13. Right shell Ⅱ 14. Hole Ⅱ 15. Internal thread Ⅱ 16. External Thread Ⅰ 17. Shell base 18. External thread Ⅱ 19. Inner shell base 20. Wind direction sensor

detailed description

Below in conjunction with accompanying drawing, the present invention is described in further detail:

As shown in Figure 1, the present invention consists of outer shell A, inner shell B, shell base C, wind direction sensor group D, connecting rod I1, driving hinge I2, connecting rod II3, driving hinge II4, base 5 and gas adsorption Composed of agent 6, wherein the internal thread I11 of the right housing I8 in the outer shell A is threadedly connected with the external thread I16 of the shell base 17 in the shell base C; the internal thread II15 of the right shell II13 in the inner shell B is connected with the shell base The outer thread II18 of the inner shell base 19 in C is threadedly connected; the left end of the connecting rod I1 is fixedly connected with the right end of the shell base 17 of the shell base C, the right end of the connecting rod I1 is movably connected with the upper end of the connecting rod II3 through the drive hinge I2, and the lower end of the connecting rod II3 Via the driving hinge II4, it is movably connected with the center of the upper end of the base 5;

The gas adsorbent 6 is placed in the cavity of the inner casing B.

As shown in Figure 2-5, the outer casing A is composed of a left casing I7, a right casing I8 and a bionic baffle 10, wherein the left casing I7 is hemispherical, and its radius _r1 is 25mm; the right casing Ⅰ8 is a cylindrical tube with an outer diameter d1 _of 50mm and a length L1 _of 78-80mm. The right housing Ⅰ8 is provided with an internal thread Ⅰ11 near the right end; the left housing Ⅰ7 is provided with 13 holes Ⅰ9 from top to bottom. The bottom is divided into three layers, of which one is set at the top of the hemisphere, and the other two layers are each set with six, which are evenly distributed on the circumference of this layer, and the distance L2 between the _two layers is 10mm; there are 72 holes on the right shell I8 Ⅰ9, arranged in six layers from left to right, 12 holes in each layer are evenly distributed on the outer circumference of the layer, and the holes I9 in two adjacent layers are not misaligned, and the distance L ₃ between each layer is 10mm;

The diameter _d2 of the hole I is 3mm; the wall thickness _t1 of the left casing I7 and the right casing I8 is 2-4mm; the right end of the left casing I7 is fixedly connected with the left end of the right casing I8; there are 30 bionic baffles 10, each A bionic baffle 10 is a fan ring composed of two concentric arcs, wherein the small arc radius r ₂ is 25mm, the large arc radius r ₃ is 30mm, the central angle β of the two arcs is 40°, and the thickness of the bionic baffle is _t2 is 2-4mm; the bionic baffles 10 are divided into five layers, 6 of each layer are evenly distributed and fixed on the outer circumference of the right casing I8, and the five layers of bionic baffles 10 are arranged at intervals on the six sides of the right casing I8. Layer hole I9 is in the middle; the center of each bionic baffle 10 is on a straight line with the centers of two adjacent layers of shell shell holes 2; the bionic baffles 10 of adjacent layers are arranged in a staggered manner, and the stagger angle α is 30°; the bionic baffle The sector plane of 10 is perpendicular to the longitudinal axis of the right casing I8.

As shown in Figure 6-7, the inner casing B is composed of a left casing II12 and a right casing II13, wherein the left casing II12 is hemispherical, the radius _r4 is 20mm, and the right casing II13 is a cylindrical tube , the outer circle diameter _d3 is 40mm, the length L4 is _60-65mm , the right housing Ⅱ13 is provided with internal thread and internal thread Ⅱ15 near the right end; the left housing Ⅱ12 is provided with 13 holes Ⅱ14, which are divided into three parts from top to bottom. One layer is set at the top of the hemisphere, and the other two layers are each equipped with six, which are respectively evenly distributed on the circumference of the layer, and the distance L5 between the two layers is 8mm; there are 96 holes _II14 on the right shell II13, from which Set six layers from left to right, each layer has 16 holes evenly distributed on the outer circumference of the layer, and the holes II14 of two adjacent layers are not misaligned, and the distance L ₆ between each two layers is 8mm;

The diameter _d4 of the hole II is 3mm; the wall thickness _t3 of the left housing II12 and the right housing II13 is 2-4mm; the right end of the left housing II12 is fixedly connected with the left end of the right housing II13.

As shown in Figures 8-9, the shell base C is formed by solid connection of the outer shell base 17 and the inner shell base 19, both of which are cylinders, and the edge of the outer shell base 17 is provided with external threads Ⅰ16, the edge of the inner shell base 19 is provided with external threads Ⅱ18; the outer shell base diameter d ₅ is 50mm, the outer shell base height h ₁ is 5-10mm; the inner shell base diameter d ₆ is 40mm, and the inner shell base height h ₂ is 5-10mm .

As shown in Figure 10-11, the base 5 is a cylinder, the base diameter d7 is _60-80mm , and the base height h3 is _20-30mm ; the wind direction sensor group D consists of 8 wind direction sensors 20, eight wind direction sensors 20 are divided into two groups and evenly distributed on the cylindrical surface of the base 5, and the distance L ₇ between the two groups of wind direction sensors 20 is 5-8mm.

Specific implementation methods for different gas adsorption sampling are as follows: when performing carbon dioxide gas adsorption sampling, the gas adsorbent 6 is a carbon dioxide adsorbent; when performing methane gas adsorption sampling, the gas adsorbent 6 is a methane adsorbent; when performing formaldehyde gas adsorption sampling, the gas The adsorbent 6 is a formaldehyde adsorbent.

Claims (3)

1. a bionical gas absorption sampling apparatus, it is characterised in that by shell body (A), inner housing (B), housing base (C), wind To sensor group (D), connecting rod I (1), drive hinge I (2), connecting rod II (3), driving hinge II (4), pedestal (5) and gas Adsorbent (6) forms, and wherein by outer casing base (17) and inner shell base (19) is affixed forms for housing base (C), outer casing base (17) and inner shell base (19) is cylinder, outer casing base (17) edge is provided with external screw thread I (16), inner shell base (19) edge It is provided with external screw thread II (18)；Outer casing base diameter d₅For 50mm, outer casing base height h₁For 5-10mm；Inner shell base diameter d₆For 40mm, inner shell base height h₂For 5-10mm；Pedestal (5) is cylinder, susceptor diameter d₇For 60-80mm, pedestal height h₃For 20- 30mm；Wind transducer group (D) is made up of 8 wind transducers (20), and 8 wind transducers (20) are divided two groups and are distributed in pedestal (5) on the face of cylinder, spacing L of two groups of wind transducers (20)₇For 5-8mm；The female thread of right shell body I (8) in shell body (A) I (11) threadeds with the external screw thread I (16) of housing base (C) housing base (17)；Right shell body II (13) in inner housing (B) Female thread II (15) threaded with the external screw thread II (18) of inner shell base (19) in housing base (C)；Connecting rod I (1) is left Holding affixed with the outer casing base of housing base (C) (17) right-hand member, connecting rod I (1) right-hand member is through driving hinge I (2) and connecting rod II (3) upper end is flexibly connected, and connecting rod II (3) lower end is flexibly connected with the upper end center of pedestal (5) through driving hinge II (4)；Gas Body adsorbent (6) is placed in the cavity of inner housing (B).

2. the bionical gas absorption sampling apparatus as described in claim 1, it is characterised in that: described shell body (A) is by left housing Body I (7), right shell body I (8) and bionical baffle plate (10) composition, wherein left shell I (7) is hemispherical, its radius r₁For 25mm；Right Housing I (8) is cylindrical tube, its outside diameter d₁For 50mm, long L₁For 78-80mm, the nearly right-hand member of right shell body I (8) is provided with female thread Ⅰ(11)；Left shell I (7) is provided with 13 holes I (9), divides three-layer set from top to bottom, and wherein hemisphere top sets 1, and other are two years old Layer respectively sets 6, is distributed in respectively on the circumference of this layer, spacing L of two layers₂For 10mm；Right shell body I (8) is provided with 72 holes I (9), dividing six layers of setting from left to right, on every layer of 12 excircle being distributed in this layer, and the hole I (9) of adjacent two layers does not misplaces Arrangement, spacing L of every two layers₃For 10mm；Hole I diameter d₂For 3mm；Left shell I (7) and the wall thickness t of right shell body I (8)₁For 2- 4mm；Left shell I (7) right-hand member is affixed with right shell body I (8) left end；Bionical baffle plate (10) has 30, each bionical baffle plate (10) For the fan ring being made up of two isocentric circular arc, wherein small arc-shaped radius r₂For 25mm, large circular arc radius r₃For 30mm, the circle of two circular arcs Heart angle beta is 40 °, bionical Weir Plate Thickness t₂For 2-4mm；Bionical baffle plate (10) points five layers, 6 every layer uniform and be fixed in right shell body On the excircle of I (8), and five layers of bionical baffle plate (10) are spaced the middle, six layers of hole I (9) in right shell body I (8)；Each The center of bionical baffle plate (10) is with two adjacent layer shell body hole (2) centers point-blank；The bionical baffle plate (10) of adjacent layer Being staggered, alternate angle α is 30 °；The fan-shaped plan of bionical baffle plate (10) is vertical with the longitudinal axis of right shell body I (8).

3. the bionical gas absorption sampling apparatus as described in claim 1, it is characterised in that: described inner housing (B) is by left housing Body II (12) and right shell body II (13) composition, wherein left shell II (12) is hemispherical, radius r₄For 20mm, right shell body II (13) For cylindrical tube, its outside diameter d₃For 40mm, long L₄For 60-65mm, the nearly right-hand member of right shell body II (13) is provided with female thread female thread Ⅱ(15)；Left shell II (12) is provided with 13 holes II (14), divides three-layer set from top to bottom, and wherein hemisphere top sets 1, its He two layers respectively set 6, be distributed in respectively on the circumference of this layer, spacing L of two layers₅For 8mm；Right shell body II (13) is provided with 96 Hole II (14), divides six layers to arrange on every layer of 16 excircle being distributed in this layer from left to right, and the hole II (14) of adjacent two layers Not Heterogeneous Permutation, spacing L of every two-layer₆For 8mm；Hole II diameter d₄For 3mm；Left shell II (12) and the wall of right shell body II (13) Thick t₃For 2-4mm；Left shell II (12) right-hand member is affixed with right shell body II (13) left end.