CN212180762U - Underwater antifouling electronic nasal cavity chamber - Google Patents

Abstract

An underwater antifouling electronic nose cavity belongs to the technical field of mechanical engineering, and the utility model is characterized in that a filter screen I, a cavity I, a spoiler I, an arc ball body, a spoiler II, a cavity II and a filter screen II are sequentially arranged from left to right and are of a symmetrical structure about an a-a cross section, wherein the filter screen I is fixedly connected to the near left part of a collection port in the cavity I, and the filter screen II is fixedly connected to the near right part of the collection port in the cavity II; the inner end of a round rod of the spoiler I is fixedly connected to the left end of the center of the arc spherical shell of the arc sphere, and the inner end of a round rod of the spoiler II is fixedly connected to the right end of the center of the arc spherical shell of the arc sphere; the left surface of the outer ring of the arc ball body is fixedly connected with the right end of the chamber I, and the right surface of the outer ring of the arc ball body is fixedly connected with the left end of the chamber II; the utility model discloses can effectively avoid adhering to of marine microorganism to can guide the liquid that awaits measuring to reach the sensor surface, it is high with detection efficiency to detect the precision, its simple structure, long service life, be convenient for installation, with low costs, easy popularization.

Description

Underwater antifouling electronic nasal cavity chamber

Technical Field

The utility model belongs to the technical field of mechanical engineering, concretely relates to antifouling electron nose cavity under water.

Background

With the continuous development of the economic and scientific levels, the demands of people on materials and energy are continuously expanded, and the development of ocean resources is gradually deepened along with the progress of the scientific and technological levels. However, in the process of ocean development, the ocean pollution is serious due to a series of unreasonable human activities, so that the monitoring of the ocean water quality is extremely important.

The electronic nose, also called artificial olfaction, is widely regarded for its advantages of long service life, simple operation, small volume, low cost, capability of qualitative and quantitative measurement, capability of realizing in-situ, on-line and real-time measurement, etc. Electronic noses are considered as the most promising solution for olfactory simulation. At present, main research on the electronic nose focuses on the aspects of gas sensor array arrangement mode, signal preprocessing program, mode identification method and the like. The electronic nose chamber is the hardware of the electronic nose and also is the carrier of the sensor, and the structural reasonableness of the electronic nose chamber has great influence on the flow mode of the fluid and the overall detection capability of the electronic nose.

The nasal hair in the nasal cavity can block dust and bacteria in the air, and can completely block large particles larger than PM 50 and the like, so that a human body can inhale filtered clean air; the nose hair can protect the olfactory nerve from being damaged, so that the nose can smell various smells and the fragrance of food is transmitted to the brain to increase the appetite; when larger foreign bodies, such as bugs, enter the nasal cavity, the nose hair not only blocks but also transmits information to the nervous system, causing sneezing and removing them.

The surface of the Japanese microscope clam is of a regular corrugated structure, the texture of the growth line is clear, no obvious radioactive ray texture exists, and a plurality of fine scales exist on the texture of the growth line. The theory of adsorption points proposed by acardino suggests that: microorganisms tend to attach to surfaces where the surface texture is larger in size than their body size, and attachment rates are low when the surface microtexture is smaller in size than their body size. Diatoms are one of the most common small fouling organisms, ranging from a few micrometers to tens of micrometers in size, larger than the small scale size on the surface texture of the japanese clams, and thus are not easily adhered to the surface of the japanese clams. Because the formation of the microbial mucosa mainly containing diatom is a prerequisite for the adhesion of large fouling organisms, the diatom does not adhere to the surface of the Japanese microscope clam, and larvae, zoospores and the like of other large fouling organisms lose the adhesion foundation on the surface of the Japanese microscope clam.

Inspired by two bionic prototypes, namely the nasal cavity and the Japanese microscope clam, the bionic electronic nose is reasonably applied to the cavity structure design of the electronic nose, so that the pollution prevention of the cavity of the electronic nose can be effectively realized, and the detection precision of the electronic nose is improved.

Disclosure of Invention

An object of the utility model is to provide a reasonable electron nose structure under water can improve the precision that the sea water detected and the life of electron nose, utilizes the nasal cavity to the effect of blockking of particulate matter and the antifouling structure in surface of mirror clam, reduces the adhesion of electron nasal cavity marine microorganism.

The utility model discloses by cavity IA, spoiler IB, arc spheroid C, spoiler IID, cavity IIE, filter screen I1, filter screen II 2 constitute, filter screen I1, cavity IA, spoiler IB, arc spheroid C, spoiler IID, cavity IIE and filter screen II 2 are arranged from left to right in proper order, and be the symmetrical structure about a-a cross section, wherein filter screen I1 rigid coupling is in the nearly left part of collection mouth 3 in cavity IA, filter screen II 2 rigid coupling is in the nearly right part of collection mouth in cavity IIE; the inner end of a round rod 6 of the spoiler IB is fixedly connected to the left end of the center of the arc spherical shell 10 of the arc spherical body C, and the inner end of a round rod of the spoiler IID is fixedly connected to the right end of the center of the arc spherical shell 10 of the arc spherical body C; the left side of the outer ring 8 of the arc sphere C is fixedly connected with the right end of the cavity IA, and the right side of the outer ring 8 of the arc sphere C is fixedly connected with the left end of the cavity IIE.

The chamber IA and the chamber IIE have the same structure and opposite directions, and are respectively provided with an acquisition port 3, a transition section 4 and a detection section 5, wherein the acquisition port 3 is arranged between ab connecting lines in the peripheral contour lines of the chamber IA and the chamber IIE, the transition section 4 is arranged between bc connecting lines, and the detection section 5 is arranged between cd connecting lines; thickness d of the acquisition opening 3, the transition section 4 and the detection section 5₁Is 4-6 mm; the collection port 3 is a round pipe with an inner diameter D₁30-40mm, length L₁Is 30-40 mm; the detection section 5 is a round pipe with an inner diameter D₂Is 80-90mm, and has a length L₃78-85mm, length L of transition section 4₂75-85mm, one end of the transition section 4 is smoothly connected with the acquisition port 3, and the other end of the transition section 4 is smoothly connected with the detection section 5.

The spoiler IB and the spoiler IID have the same structure and opposite directions and are composed of a round rod 6 and a conical body piece group 7, the conical body piece group 7 is composed of four conical body pieces, and the four conical body pieces are uniformly distributed and fixedly connected to the circumference of one end of the round rod 6; diameter D of round bar 6₃Is 5-7mm, and has a length L₄Is 35-45 mm; the outer end of the cone-shaped body piece is a circular arc line with the radius r₁30-35mm, axial length L of the cone body piece₅18-22mm, the radial length L of the cone-shaped piece₇Is 18-22mm, and the lower conical bottom surface L of the conical body piece₆4-6mm, and the taper is 1: 20.

The arc sphere C consists of an outer ring 8, a connector group 9, an arc spherical shell 10 and a sensor group 11, wherein the outer ring 8 is a circular ring body, and the diameter D of the outer ring 8₄85-95mm, thickness d₂Is 4-6mm, width L₈10-15 mm; the shell 10 is formed by an inner ring 15 and a pair of arc surfaces 14, the diameter D of the inner ring 15₅Is 65-85mm in thickness d₃Is 3-5mm, and has a width L₉10-15 mm; the arc surface pair 14 is composed of a left arc surface and a right arc surface, the left arc surface and the right arc surface have the same structure and opposite directions and are respectively fixedly connected to the left surface and the right surface of the inner ring 15, four through grooves of the through groove group 13 are uniformly distributed on the left arc surface and the right arc surface by taking the axis as the central line, and the groove length L of the four through grooves₁₀11-13mm, groove width L₁₁10-12mm, wall thickness d₄Is 3-5 mm; radius r of left cambered surface and right cambered surface₂Are all 45-55mm and are under arc angle₁Are all 90 degrees; clearance 12h between the outer ring surface of the inner ring 15 and the inner ring of the outer ring 8₁4-6mm, the connecting body group 9 comprises three cylinders and a torus, the three cylinders and the torus are uniformly distributed in a gap 12 between the inner ring 15 and the outer ring 8, and the diameter D of each cylinder₆5-8mm, inner diameter D of the torus₇2-3 mm; the sensor group 11 consists of 4 sensors which are respectively and fixedly connected in four through grooves of the through groove group 13; the inner ring of the outer ring 8 is fixedly connected with the outer ring of the inner ring 15 in the spherical shell 10 through three cylinders of the connector group 9.

The filter screen I1 and the filter screen II 2 have the same structure and opposite directions, the inward surface is a plane, the outward surface is a wavy surface, and a single wave is formed by a radius r₃2.8-3.2mm, and arc angle₂Arc with radius r of 45-50 degrees₄Is 0.8-1.2mm and is less than the arc angle₃Arc with 70-75 degrees and radius r₅Is 0.1-0.3mm and is less than the arc angle₄130-135 degrees, the thickness d of the filter screen I1 and the filter screen II 2₅2-3mm, the mesh number of the mesh openings is 100-200 meshes.

Regular triangle bulges are arranged on the inner surfaces of the detection sections 5 of the cavity IA and the cavity IIE and the left and right cambered surfaces of the cambered spherical shell 10 in the cambered spherical body C, and the height h of the bulges₂0.03-0.05 mm; the bulges are uniformly distributed on the circumference of the inner surface of the detection section 5 of the cavity IA and the cavity IIE and are arranged in parallel along the axial direction; the bulges are distributed radially on the left cambered surface and the right cambered surface of the cambered spherical shell 10 in the cambered spherical body C by taking the center of the cambered surfaces as the origin.

The principle and the working process of the utility model are as follows:

the utility model discloses set up in the embankment department in ocean, be fixed in the bank, guarantee that the electron nose both ends make the sea water can realize the intercommunication from the both ends of cavity under the effect of morning and evening tides, the process of exhaling is breathed in to the simulation nasal cavity.

The utility model discloses a simulation vibrissa is to the barrier effect of the particulate matter of dust, bacterium etc. sets up the filter screen at electron nasal cavity way front end entry, and process its front end into "wave" shape, produces the vortex in the notch department when the fluid erodees, the effectual adhesion that reduces marine microorganism, and discharge the microcurrent in filter screen department, further guarantee the unobstructed of electron nasal passageway, avoid microorganism to get into the cavity; according to the fact that the nose hair in the nasal cavity has a certain flow guiding effect on air, the meshes of the filter screen are reasonably designed and distributed, and the detection efficiency of the sensor is improved; the utility model designs two ends as symmetrical structures, which simulates the process of inhalation and exhalation of nasal cavity along with the back and forth action of seawater, and can discharge the particles blocked during inhalation out of the channel of the electronic nose during exhalation, thereby ensuring the smoothness of the collection port; the inner wall of the electronic nose simulates the microstructure of the surface of the Japanese microscope clam, and the inner wall is designed with a tiny triangular bulge, so that the attachment and the multiplication of microorganisms entering the cavity are greatly avoided, and the normal work of the sensor is ensured. In order to ensure the detection precision of the sensor and avoid microorganisms from being attached to a probe of the sensor, two spoilers are arranged at two ends of the arc sphere, so that the water flows through the spoilers when passing through the arc sphere, on one hand, the detected liquid flows into a groove of the arc sphere more sufficiently, on the other hand, the turbulence of the water flow is caused, the attachment of the microorganisms is avoided, and in the process of 'inhaling' and 'exhaling' of the nasal cavity, the liquid flow direction is changed, and the attachment of the microorganisms is also hindered.

When liquid enters from one end of the electronic nose, the liquid enters the cavity through the meshes of the filter screen, particulate matters, impurities and microorganisms in the liquid are blocked on one side of the filter screen under the action of the filter screen, the liquid enters the cavity of the electronic nose at a certain flow velocity under the flow guide action of the filter screen, the microorganisms are prevented from adhering to the sensor probe under the action of the spoiler, and the liquid flow at the detection end is improved; for microorganisms with very small volume, after entering the cavity, because the inner wall of the cavity is provided with the triangular bulge imitating the Japanese clam, the attachment of the microorganisms can be greatly avoided, and the microorganisms flow out from the other port along with the flushing action of water flow, so that the detection precision of the sensor is ensured; under the action of tide, after one-time detection, seawater enters from the other end of the electronic nose and flows out from the initial port, and particles and the like at the port are flushed out of the electronic nose channel, so that the self-cleaning effect is achieved.

The utility model is provided with the filter screen I1 and the filter screen II 2 at the front and the rear ends of the electronic nasal cavity channel, the wavy surface of the filter screen can cause the eddy flow of water flow, the attachment of microorganisms is reduced, and the micro-current is added on the filter screen, so the attachment of the microorganisms is further reduced; a tiny triangular bulge is designed on the inner wall of the electronic nasal cavity chamber detection section and the cambered surface of the cambered sphere C, so that the attachment of microorganisms is reduced; under the effect of spoiler IB and spoiler IID, the liquid to be measured that is close to the sensor is disturbed, makes the liquid flow who reaches the sensor increase, and the turbulence scale of the liquid to be measured increases, and this can not only increase the contact time of the liquid to be measured and the sensor surface, can also avoid the microorganism to adhere to the surface at the sensor to make the detection of sensor more stable accurate.

The utility model discloses can effectively improve accuracy and the life that the sensor detected in the sea water, adhesion of marine microorganism can greatly be avoided in its symmetrical structure, filter screen and inside automatically cleaning effect, can improve the detection precision of sensor under the effect of filter screen and spoiler moreover, its simple structure, be convenient for installation, low cost, easily popularization.

Drawings

FIG. 1 is a schematic view of the structure of an underwater antifouling electronic nose chamber

FIG. 2 is a cross-sectional view of a chamber

FIG. 3 is a spoiler elevation view

FIG. 4 is a left side view of a spoiler

FIG. 5 is a front view of an arc sphere

FIG. 6 is a left side view of an arc sphere

FIG. 7 is a side view of an arc spherical shell

FIG. 8 is a cross-sectional view of an arc spherical shell

FIG. 9 is a side view of a screen

FIG. 10 is an enlarged view of the wave structure (e) of the strainer

FIG. 11 is a cross-sectional view of an electronic nasal cavity

FIG. 12 is an enlarged sectional view of the inner wall structure (f)

FIG. 13 is a top view of an N-way inner wall structure

Wherein: A. chamber IB, spoiler IC, arc ball D, spoiler IIE, chamber II 1, filter screen I2, filter screen II 3, acquisition port 4, transition section 5, detection section 6, round rod 7, cone-shaped body group 8, outer ring 9, connector group 10, arc ball shell 11, sensor group 12, gap 13, through groove group 14, arc surface group 15, inner ring group 15

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in figure 1, the utility model comprises a cavity IA, a spoiler IB, an arc sphere C, a spoiler IID, a cavity IIE, a filter screen I1 and a filter screen II 2, wherein the filter screen I1, the cavity IA, the spoiler IB, the arc sphere C, the spoiler IID, the cavity IIE and the filter screen II 2 are sequentially arranged from left to right and have a symmetrical structure about an a-a cross section, the filter screen I1 is fixedly connected to the near left part of an acquisition port 3 in the cavity IA, and the filter screen II 2 is fixedly connected to the near right part of the acquisition port in the cavity IIE; the inner end of a round rod 6 of the spoiler IB is fixedly connected to the left end of the center of the arc spherical shell 10 of the arc spherical body C, and the inner end of a round rod of the spoiler IID is fixedly connected to the right end of the center of the arc spherical shell 10 of the arc spherical body C; the left side of the outer ring 8 of the arc sphere C is fixedly connected with the right end of the cavity IA, and the right side of the outer ring 8 of the arc sphere C is fixedly connected with the left end of the cavity IIE.

As shown in fig. 1 and 2, the chamber ia and the chamber ie have the same structure and opposite directions, and are provided with an acquisition port 3, a transition section 4 and a detection section 5, wherein the acquisition port 3 is arranged between ab connecting lines in the peripheral contour lines of the chamber ia and the chamber ie, the transition section 4 is arranged between bc connecting lines, and the detection section 5 is arranged between cd connecting lines; thickness d of the acquisition opening 3, the transition section 4 and the detection section 5₁Is 4-6 mm; the collection port 3 is a round pipe with an inner diameter D₁30-40mm, length L₁Is 30-40 mm; the detection section 5 is a round pipe with an inner diameter D₂Is 80-90mm in lengthL₃78-85mm, length L of transition section 4₂75-85mm, one end of the transition section 4 is smoothly connected with the acquisition port 3, and the other end of the transition section 4 is smoothly connected with the detection section 5.

As shown in fig. 1, 3 and 4, the spoiler ib and the spoiler iid have the same structure and opposite directions, and are both composed of a round rod 6 and a conical body sheet set 7, wherein the conical body sheet set 7 is composed of four conical body sheets, and the four conical body sheets are uniformly distributed and fixedly connected to the circumference of one end of the round rod 6; diameter D of round bar 6₃Is 5-7mm, and has a length L₄Is 35-45 mm; the outer end of the cone-shaped body piece is a circular arc line with the radius r₁30-35mm, axial length L of the cone body piece₅18-22mm, the radial length L of the cone-shaped piece₇Is 18-22mm, and the lower conical bottom surface L of the conical body piece₆4-6mm, and the taper is 1: 20.

As shown in fig. 5 to 8, the arc sphere C is composed of an outer ring 8, a connector set 9, an arc sphere shell 10 and a sensor set 11, the outer ring 8 is a circular ring, and the diameter D of the outer ring 8₄85-95mm, thickness d₂Is 4-6mm, and has a width L₈10-15 mm; the shell 10 is formed by an inner ring 15 and a pair of arc surfaces 14, the diameter D of the inner ring 15₅Is 65-85mm in thickness d₃Is 3-5mm, and has a width L₉10-15 mm; the arc surface pair 14 is composed of a left arc surface and a right arc surface, the left arc surface and the right arc surface have the same structure and opposite directions and are respectively fixedly connected to the left surface and the right surface of the inner ring 15, four through grooves of the through groove group 13 are uniformly distributed on the left arc surface and the right arc surface by taking the axis as the central line, and the groove length L of the four through grooves₁₀11-13mm, groove width L₁₁10-12mm, wall thickness d₄Is 3-5 mm; radius r of left cambered surface and right cambered surface₂Are all 45-55mm and are under arc angle₁Are all 90 degrees; clearance 12h between the outer ring surface of the inner ring 15 and the inner ring of the outer ring 8₁4-6mm, the connecting body group 9 comprises three cylinders and a torus, the three cylinders and the torus are uniformly distributed in a gap 12 between the inner ring 15 and the outer ring 8, and the diameter D of each cylinder₆5-8mm, inner diameter D of the torus₇2-3 mm; the sensor group 11 consists of 4 sensors which are respectively and fixedly connected in four through grooves of the through groove group 13; the inner ring of the outer ring 8 and the outer ring of the inner ring 15 in the spherical shell 10 pass through three circles of the connecting body group 9The column body is fixedly connected.

As shown in figures 1, 9 and 10, the filter I1 and the filter II 2 have the same structure and opposite directions, the inward surface is a plane, the outward surface is a wave-shaped surface, and a single wave has a radius r₃2.8-3.2mm, and arc angle₂Arc with radius r of 45-50 degrees₄Is 0.8-1.2mm and is less than the arc angle₃Arc with 70-75 degrees and radius r₅Is 0.1-0.3mm and is less than the arc angle₄130-135 degrees, the thickness d of the filter screen I1 and the filter screen II 2₅2-3mm, the mesh number of the mesh openings is 100-200 meshes.

As shown in fig. 11 to 13, regular triangle protrusions are arranged on the inner surfaces of the detection sections 5 of the chamber ia and the chamber ie and the left and right arc surfaces of the arc spherical shell 10 in the arc spherical body C, and the height h of the protrusions₂0.03-0.05 mm; the bulges are uniformly distributed on the circumference of the inner surface of the detection section 5 of the cavity IA and the cavity IIE and are arranged in parallel along the axial direction; the bulges are distributed radially on the left cambered surface and the right cambered surface of the cambered spherical shell 10 in the cambered spherical body C by taking the center of the cambered surfaces as the origin.

Claims (6)

1. An underwater antifouling electronic nose cavity is characterized by consisting of a cavity I (A), a spoiler I (B), an arc ball body (C), a spoiler II (D), a cavity II (E), a filter screen I (1) and a filter screen II (2), wherein the filter screen I (1), the cavity I (A), the spoiler I (B), the arc ball body (C), the spoiler II (D), the cavity II (E) and the filter screen II (2) are sequentially arranged from left to right and are of a symmetrical structure about an a-a cross section, the filter screen I (1) is fixedly connected to the near left part of a collecting port (3) in the cavity I (A), and the filter screen II (2) is fixedly connected to the near right part of the collecting port in the cavity II (E); the inner end of a round rod (6) of the spoiler I (B) is fixedly connected to the left end of the center of an arc spherical shell (10) of the arc spherical body (C), and the inner end of a round rod of the spoiler II (D) is fixedly connected to the right end of the center of the arc spherical shell (10) of the arc spherical body (C); the left side of the outer ring (8) of the arc sphere (C) is fixedly connected with the right end of the chamber I (A), and the right side of the outer ring (8) of the arc sphere (C) is fixedly connected with the left end of the chamber II (E).

2. The underwater antifouling electronic nasal cavity of claim 1 wherein said cavities I (A) and I (A) areThe structure of the chamber II (E) is the same, the directions are opposite, and the chamber II (E) is provided with an acquisition port (3), a transition section (4) and a detection section (5), wherein the acquisition port (3) is arranged between ab connecting lines in the peripheral contour lines of the chamber I (A) and the chamber II (E), the transition section (4) is arranged between bc connecting lines, and the detection section (5) is arranged between cd connecting lines; the thickness d of the acquisition opening (3), the transition section (4) and the detection section (5)₁Is 4-6 mm; the collection port (3) is a round pipe with an inner diameter D₁30-40mm, length L₁Is 30-40 mm; the detection section (5) is a round pipe with an inner diameter D₂Is 80-90mm, and has a length L₃78-85mm, the length L of the transition section (4)₂75-85mm, one end of the transition section (4) is smoothly connected with the acquisition port (3), and the other end of the transition section (4) is smoothly connected with the detection section (5).

3. The underwater antifouling electronic nose chamber as claimed in claim 1, wherein the spoiler I (B) and the spoiler II (D) have the same structure and opposite directions and are composed of a round rod (6) and a conical body sheet group (7), the conical body sheet group (7) is composed of four conical body sheets, and the four conical body sheets are uniformly distributed and fixedly connected to the circumference of one end of the round rod (6); diameter D of round bar (6)₃Is 5-7mm, and has a length L₄Is 35-45 mm; the outer end of the cone-shaped body piece is a circular arc line with the radius r₁30-35mm, axial length L of the cone body piece₅18-22mm, the radial length L of the cone-shaped piece₇Is 18-22mm, and the lower conical bottom surface L of the conical body piece₆4-6mm, and the taper is 1: 20.

4. The underwater antifouling electronic nasal cavity according to claim 1, characterised in that the sphere (C) consists of an outer ring (8), a connector group (9), a sphere housing (10) and a sensor group (11), the outer ring (8) is a torus, and the diameter D of the outer ring (8) is₄85-95mm, thickness d₂Is 4-6mm, and has a width L₈10-15 mm; the spherical shell (10) is composed of an inner ring (15) and an arc surface pair (14), the diameter D of the inner ring (15)₅Is 65-85mm in thickness d₃Is 3-5mm, and has a width L₉10-15 mm; the arc surface pair (14) consists of a left arc surface and a right arc surface, the left arc surface and the right arc surface have the same structure and opposite directions and are respectively fixedly connected to the left surface and the right surface of the inner ring (15), and the left arc surface and the right arc surface use the axis as the axisFour through grooves of the through groove group (13) are uniformly distributed on the central line, and the groove length L of the four through grooves₁₀11-13mm, groove width L₁₁10-12mm, wall thickness d₄Is 3-5 mm; radius r of left cambered surface and right cambered surface₂Are all 45-55mm and are under arc angle₁Are all 90 degrees; the width h of the gap (12) between the outer ring surface of the inner ring (15) and the inner ring of the outer ring (8)₁Is 4-6mm, the connecting body group (9) comprises three cylinders and a torus, the three cylinders and the torus are uniformly distributed in a gap (12) between the inner ring (15) and the outer ring (8), and the diameter D of each cylinder₆5-8mm, inner diameter D of the torus₇2-3 mm; the sensor group (11) consists of 4 sensors which are respectively and fixedly connected in four through grooves of the through groove group (13); the inner ring of the outer ring (8) is fixedly connected with the outer ring of the inner ring (15) in the spherical shell (10) through three cylinders of the connecting body group (9).

5. An underwater antifouling electronic nasal cavity according to claim 1 characterised in that the screens i (1) and ii (2) are of the same configuration but in opposite directions, with the inward facing surface being planar and the outward facing surface being "wavy", wherein a single wave extends from radius r₃2.8-3.2mm, and arc angle₂Arc with radius r of 45-50 degrees₄Is 0.8-1.2mm and is less than the arc angle₃Arc with 70-75 degrees and radius r₅Is 0.1-0.3mm and is less than the arc angle₄130-135 degrees, the thickness d of the filter screen I (1) and the filter screen II (2)₅2-3mm, the mesh number of the mesh openings is 100-200 meshes.

6. The underwater antifouling electronic nose chamber as claimed in claim 1, wherein regular triangular protrusions are arranged on the inner surfaces of the detection sections (5) of the chamber I (A) and the chamber II (E) and the left and right arc surfaces of the spherical shell (10) in the spherical body (C), and the height h of the protrusions is₂0.03-0.05 mm; the bulges are uniformly distributed on the circumference of the inner surface of the detection section (5) of the chamber I (A) and the chamber II (E) and are arranged in parallel along the axial direction; the bulges are distributed radially on the left cambered surface and the right cambered surface of the cambered spherical shell (10) in the cambered sphere (C) by taking the center of the cambered surfaces as the origin.

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