CN113884622A - Protective air chamber structure for sensitive element of mining sensor - Google Patents
Protective air chamber structure for sensitive element of mining sensor Download PDFInfo
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- CN113884622A CN113884622A CN202111094675.3A CN202111094675A CN113884622A CN 113884622 A CN113884622 A CN 113884622A CN 202111094675 A CN202111094675 A CN 202111094675A CN 113884622 A CN113884622 A CN 113884622A
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- shell
- clamping groove
- filter screen
- air
- sensitive element
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- 238000005065 mining Methods 0.000 title claims abstract description 22
- 230000001681 protective effect Effects 0.000 title claims abstract description 9
- 238000009423 ventilation Methods 0.000 claims abstract description 25
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 229920002302 Nylon 6,6 Polymers 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 21
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000005507 spraying Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 230000004044 response Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
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- 239000010802 sludge Substances 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
Abstract
The invention provides a protective air chamber structure for a sensitive element of a mining sensor, which comprises a shell, a protective ring, a joint, an inner lining and a filter screen, wherein the protective ring is connected to the outer side of the lower part of the shell, the joint is connected to the upper part of the shell, an air inlet and a ventilation port are arranged at the lower end of the shell, a clamping groove for assembling the filter screen is arranged on the inner wall of the shell, the clamping groove is communicated with the ventilation port and the air inlet, the air inlet is bent outwards to form a circle of boss, the boss is positioned right below the ventilation port, and the inner lining is detachably paved and attached to the inner wall of the chamber. According to the invention, the ventilation port arranged on the air chamber structure enables the air convection to be formed in the chamber, and the detected air can quickly enter the chamber, so that the sensitive element can respond in time, the air can be detected quickly, and the accuracy of detection data is improved; the waterproof structure can prevent water from entering the cavity to affect the sensitive element and prevent the water from forming a water sealing film on the filter screen to prevent the gas to be detected from entering the cavity quickly; can meet the water spraying requirement of IPX5 and the dustproof requirement of IP 6X.
Description
Technical Field
The invention relates to the technical field of mining sensors, in particular to a protective air chamber structure for a sensitive element of a mining sensor.
Background
The various mining gas component sensors are used as important components of a coal mine safety monitoring system. The sensor sensitive element is used as an important element of the sensor which is directly contacted with the component gas, and the protection of the sensitive element determines whether the sensor can upload the measured data timely and accurately.
The sensor sensing element is usually wrapped by a gas cell structure, which has the main functions of: 1. the striking resistance, the striking of splashed stone coal blocks, the accidental falling prevention and the like; 2. the water-proof device is waterproof, water drenching caused by natural dripping and scouring usually exists in a mine, and the water entering of the sensitive element can cause the self failure of the sensitive element and the blockage of a gas exchange passage, so that the normal detection of the sensitive element on environmental gas is indirectly influenced; 3. maintaining a certain stable environment, wherein some sensitive elements need to form a continuous high-temperature state in a small space, such as a catalytic methane sensor, the optimal operation temperature is 340 ℃, and some sensitive elements need to shield the signals; 4. and a necessary connection structure is used for connecting the sensitive element with a communication operation power supply main board.
But as the mine sensor protection level is upgraded beyond IPX 6. Some sensor sensitive elements can not meet corresponding waterproof performance requirements, and are limited by the requirements of ventilation and water resistance, so that the ventilation efficiency is high and a certain waterproof performance is difficult to achieve.
Existing air chamber structures generally have the following disadvantages:
1. the ventilation convection exchange hole at the bottom is directly exposed on the side wall of the shell, and the ventilation convection exchange hole is directly communicated with the sensitive element, so that water drops can directly enter the sensitive element after water spraying, and the risk of damaging the sensitive element exists.
2. The filter screen of lower part does not have any waterproof construction, leads to the sensor by the trickle after, because the viscosity and the surface tension of water, the filter screen of water film direct dead bottom leads to the unable quick entering of measured gas to be surveyed inside the cavity, leads to the unable normal gas detection of sensitive element, appears the sluggish or the inaccurate condition of detection data.
3. Some air chambers locate the vent hole on the lateral wall, still can not effectively protect to drenching water through the test, drenching water can enter into the air chamber cavity, causes the influence to the sensing element, forms the water seal membrane on the filter screen.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the invention aims to provide a mining sensor sensitive element protection air chamber structure which comprises an outer shell, a retainer, a joint, an inner lining and a filter screen.
The inside hollow structure who link up that is vertical of shell, the shell lower extreme is equipped with air inlet and scavenge port, and the scavenge port is closer to the shell lateral wall than the air inlet, and the shell inner wall is equipped with the draw-in groove that is used for assembling the filter screen, and the draw-in groove all communicates with scavenge port, air inlet, and the air inlet is outwards bent and is formed the round boss, and the boss is located the scavenge port under.
The guard ring is detachably connected to the outer side of the lower portion of the shell, and a circle of gap used for air exchange and communicated with the air exchange port is reserved between the guard ring and the boss.
The interior of the joint is of a vertically-through hollow structure, the joint is detachably connected to the upper portion of the shell, and a cavity for placing a sensitive element is formed in the interior after the joint and the shell are connected.
The inside lining can be dismantled and lay and laminate in the cavity inner wall, and the trompil that is used for gas exchange is left to the inside lining bottom, and the line hole is crossed that is used for running through the wire is left on inside lining upper portion, and trompil and air inlet, scavenge port all communicate.
The filter screen is assembled in the clamping groove.
In some embodiments, the liner is an integrally formed or detachably assembled structure.
In some embodiments, the liner includes an upper liner, a first side liner and a second side liner in close contact with each other, the first side liner is clamped over the second side liner, and the upper liner is clamped over the first side liner.
In some embodiments, the retainer extends downwardly a distance beyond the boss.
In some embodiments, two clamping grooves are provided, including an upper clamping groove and a lower clamping groove, the upper clamping groove is located above the ventilation port and communicated with the ventilation port, the lower clamping groove is located at a position close to the air inlet, a dustproof filter screen is arranged in the upper clamping groove, and an outer stainless steel filter screen is arranged in the lower clamping groove.
In some embodiments, the number of the air vents is not less than 4, and the air vents are uniformly distributed around the outer side of the air inlet.
In some embodiments, a retainer ring groove for clamping a retainer ring is formed in the outer shell, the retainer ring groove is close to the upper portion of the upper clamping groove and the lower portion of the inner lining, the outer diameter of the retainer ring groove is larger than that of the upper clamping groove, the retainer ring is clamped in the retainer ring groove, and the retainer ring limits the moving space of the dustproof filter screen in the vertical direction.
In some embodiments, the threaded connections are provided between the housing and the fitting and between the retainer and the housing.
In some embodiments, an O-ring is clamped at a joint where the housing and the joint are connected through threads, and O-ring grooves for clamping the O-ring are formed in the inner side and the outer side of the first side lining.
In some embodiments, the material of the liner is nylon 66.
The mining sensor sensitive element protection air chamber structure provided by the embodiment of the invention has the beneficial effects that:
1. the arranged air vent enables the air to form air convection in the cavity, and the detected air can quickly enter the cavity, so that the sensitive element can respond in time, the air can be quickly detected, and the accuracy of detection data is improved;
2. the waterproof structure can prevent water from entering the cavity to affect the sensitive element and prevent the water from forming a water sealing film on the filter screen to prevent the gas to be detected from entering the cavity quickly;
3. sensitive elements with different shapes can be made to accord with the installation condition of the air chamber by changing the partial shape of the lining; the position of the sensitive element is kept relatively fixed under the working conditions of vibration and the like; the lining made of flexible materials can effectively protect the sensitive element from being damaged under working conditions such as falling, vibration and the like;
4. the O-shaped ring installed can play a role in sealing and prevent external water from entering the cavity.
5. This air chamber can satisfy IPX 5's trickle requirement, and the outside stainless steel filter screen that is equipped with simultaneously can withstand that the large granule splashes or mud invades the sensor, and the dustproof filter screen that is equipped with can satisfy IP 6X's dustproof requirement.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent from and readily appreciated by reference to the following description of the embodiments taken in conjunction with the accompanying drawings,
wherein:
fig. 1 is a schematic structural diagram of a protective air chamber structure of a sensing element of a mining sensor provided in embodiment 1 of the present invention;
FIG. 2 is an internal schematic view of the fitting of FIG. 1;
FIG. 3 is an external schematic view of the fitting of FIG. 1;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic view of the interior of the housing of FIG. 1;
FIG. 6 is an external schematic view of the housing of FIG. 1;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is an internal view of the retainer of FIG. 1;
FIG. 9 is a top view of the retainer;
FIG. 10 is a schematic structural view of the upper liner;
FIG. 11 is a schematic view of a first side liner;
FIG. 12 is a schematic view of a second side liner;
FIG. 13 is a schematic structural view of a retainer ring;
fig. 14 is a schematic structural diagram of a shielding gas chamber structure of a sensing element of a mining sensor provided in embodiment 2 of the present invention;
FIG. 15 is an interior view of the integrally formed liner of FIG. 14;
FIG. 16 is a bottom view of FIG. 15;
reference numerals:
1-a linker; 2-a wire through hole; 3-a housing; 4-O-shaped ring grooves; 5-opening a hole; 6-a retainer; 7-a boss; 8-lining up; 9-a first side liner; 10-O-shaped ring; 11-a second side liner; 12-a retainer ring; 13-dustproof filter screen; 14-a ventilation port; 15-outside stainless steel screen; 16-an air inlet; 17-voids; 18-a retainer groove; 19-upper card slot; 20-lower card slot; 21-integrally formed liner.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to fig. 1-16 are exemplary and intended to be illustrative of the present invention, and should not be construed as limiting the present invention.
The mining sensor sensitive element protection air chamber structure of the embodiment of the invention is described below with reference to the attached drawings.
Example 1
As shown in FIGS. 1-13, the embodiment of the invention provides a mining sensor sensitive element protection air chamber structure, which comprises an outer shell 3, a retainer 6, a joint 1, an inner liner and a filter screen.
The inside hollow structure that link up vertically that is of shell 3, 3 lower extremes of shell are equipped with air inlet 16 and scavenge port 14, and scavenge port 14 is closer to 3 lateral walls of shell than air inlet 16, and 3 inner walls of shell are equipped with the draw-in groove that is used for assembling the filter screen, and the draw-in groove all communicates with scavenge port 14, air inlet 16 outwards bends and forms round boss 7, and boss 7 is located scavenge port 14 under.
The retainer 6 is screwed to the outside of the lower part of the housing 3, and a gap 17 for ventilation is left between the retainer 6 and the boss 7, and the gap 17 is communicated with the ventilation port 14.
The interior of the joint 1 is of a vertically-through hollow structure, the joint 1 is in threaded connection with the upper portion of the shell 3, and after the joint 1 and the shell 3 are connected, a cavity for placing a sensitive element is formed in the interior of the joint. The joint 1 and the shell 3 are screwed together through threads to play a role in fixing and protect the sensitive element from falling and striking.
Two planes are milled at the opposite positions of the outer sides of the shoulders of the joint 1, so that the joint 1 can be screwed conveniently.
The inside lining can be dismantled and lay and laminate in the cavity inner wall, and specific laminating is in connecting 1 inner wall, and the inside lining only in close contact with between 1 inner wall with connecting does not connect with, makes things convenient for the dismouting.
An opening 5 for gas exchange is reserved at the bottom of the lining, a wire passing hole 2 for a through wire is reserved at the upper part of the lining, and the opening 5 is communicated with an air inlet 16 and a ventilation opening 14. One end of the lead is connected with a sensitive element, the other end of the lead is connected with an external sensor circuit board after penetrating out of the opening 5 and the connector 1, and a hole in the upper part of the connector 1 is sealed by 704 silicon rubber. The integral air chamber device is connected and fixed on external equipment through external threads at the upper part of the joint 1.
The filter screen is assembled in the clamping groove. The two clamping grooves comprise an upper clamping groove 19 and a lower clamping groove 20, the upper clamping groove 19 is located above the ventilation opening 14 and communicated with the ventilation opening 14, the lower clamping groove 20 is located close to the air inlet 16, the two layers of filter screens are arranged, a dustproof filter screen 13 is arranged in the upper clamping groove 19, and an outer stainless steel filter screen 15 is arranged in the lower clamping groove 20. The dust screen 13 is a thin stainless steel mesh with a density of 230 mesh for meeting the dust requirements of IP 6X. The outer stainless steel screen 15 is an 18-mesh stainless steel screen for resisting large-particle splashing or sludge invasion into the sensor.
In some embodiments, a retainer groove 18 for retaining a retainer is formed in the outer shell, the retainer groove 18 is located immediately above the upper retainer groove and below the inner liner, the outer diameter of the retainer groove 18 is larger than the outer diameter of the upper retainer groove 19, a retainer 12 is retained in the retainer groove 18, and the retainer 12 limits the movement space of the dust screen 13 in the vertical direction. Because the thickness of the upper clamping groove 19 needs to meet the requirements of installing filter screens with different thicknesses and different materials, a certain space needs to be reserved in the upper clamping groove 19, and the maximum thickness of the installed filter screens is 2 mm. If the thickness of the installed filter screen is less than 2mm, the filter screen can move up and down slightly in the upper clamping groove 19, and the filter screen cannot run out due to the limitation of the check ring 12. The dust screen 13 is disposed above the ventilation opening 14 and does not obstruct the flow of air.
In some embodiments, the liner may be a unitary structure, as shown in fig. 14, with a unitary liner 21 disposed within the chamber; or may be a detachably assembled structure as shown in fig. 1.
In some embodiments, when the liner is in a detachable structure, the liner comprises an upper liner 8, a first side liner 9 and a second side liner 11, which are in close contact with each other, the first side liner 9 is clamped above the second side liner 11, the upper liner 8 is clamped above the first side liner 9 to form an enclosure, and the sensitive element is assembled in the enclosure, so that the following effects can be achieved: 1) adaptation: sensitive elements with different shapes can be made to accord with the installation condition of the air chamber by changing the partial shape of the lining;
2) fixing: the position of the sensitive element is kept relatively fixed under the working conditions of vibration and the like; 3) protection: the lining made of flexible materials can effectively protect the sensitive element from being damaged under working conditions such as falling, vibration and the like.
When the lining is a detachable structure, various shapes can be produced according to actual requirements, and the lining is not limited to the above structure, and the connection mode between the linings can be various as long as the lining can be fixed in the chamber and can wrap the sensitive element.
In some embodiments, the lining is made of nylon 66, is chemically stable, and is tightly wrapped.
In some embodiments, the retainer 6 extends downwardly beyond the boss by a distance such that the lower end surface of the retainer 6 is below the lower end surface of the boss 7, providing some water resistance to prevent water from entering the chamber from the side.
In some embodiments, the number of the transfer ports 14 cannot be less than 4, otherwise the response speed is not required, and the transfer ports 14 are uniformly distributed around the outer side of the air inlet 16. The ventilation openings 14 are provided for the purpose of: because the air chamber is used, the space of the chamber is relatively closed, and the chamber is filled with air, in order to enable the air to be measured to enter the chamber, the air inlet 16 and the air exchange port 14 are required to be matched to form air convection, otherwise, the response speed of the sensitive element is influenced, and the measurement accuracy of the sensor is further influenced. The response speed must be fast due to the use environment in the mine.
In some embodiments, an O-ring 10 is clamped at a joint where the outer shell 3 and the joint 1 are connected by threads, and is used for sealing between the outer shell 3 and the joint 1, O-ring grooves 4 for clamping the O-rings 10 are formed in both the inner side and the outer side of the first side lining 9, wherein the O-ring 10 on the outer side of the first side lining 9 is used for sealing between the lining and the inner wall of the joint 1, and the O-ring 10 on the inner side of the first side lining 9 is used for sealing between a sensing element and the lining. An O-ring 10 is provided to provide a seal to prevent water from entering the chamber.
Example 2
As shown in fig. 14 to 16, the difference from embodiment 1 is that the inner liner is of an integrally formed structure.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A mining sensor sensing element protection air chamber structure is characterized by comprising:
the filter screen comprises a shell, wherein the interior of the shell is of a vertically-through hollow structure, the lower end of the shell is provided with an air inlet and a ventilation port, the ventilation port is closer to the side wall of the shell than the air inlet, the inner wall of the shell is provided with a clamping groove for assembling a filter screen, the clamping groove is communicated with the ventilation port and the air inlet, the air inlet is bent outwards to form a circle of boss, and the boss is positioned right below the ventilation port;
the protective ring is detachably connected to the outer side of the lower part of the shell, and a circle of gap used for air exchange and communicated with the air exchange port is reserved between the protective ring and the boss;
the connector is of a vertically-through hollow structure, the connector is detachably connected to the upper part of the shell, and a cavity for placing a sensitive element is formed in the connector and the shell after the connector is connected with the shell;
the inner liner is detachably paved and attached to the inner wall of the cavity, an opening for gas exchange is reserved at the bottom of the inner liner, a wire passing hole for a through wire is reserved at the upper part of the inner liner, and the opening is communicated with the gas inlet and the ventilation port; and
the filter screen, the filter screen assembly is in the draw-in groove.
2. The mining sensor sensing element shielding plenum structure of claim 1, wherein the inner liner is of an integrally formed or detachably assembled structure.
3. The mining sensor sensing element protection plenum structure of claim 2, wherein the inner lining comprises an upper inner lining, a first side inner lining and a second side inner lining in close contact with each other, the first side inner lining is clamped above the second side inner lining, and the upper inner lining is clamped above the first side inner lining.
4. The mining sensor sensing element protected plenum structure of claim 1, wherein said retainer extends downwardly a distance beyond the boss.
5. The mining sensor sensitive element protection air chamber structure according to claim 1, wherein the number of the clamping grooves is two, and the two clamping grooves comprise an upper clamping groove and a lower clamping groove, the upper clamping groove is located above the ventilation port and communicated with the ventilation port, the lower clamping groove is located at a position close to the air inlet, a dustproof filter screen is arranged in the upper clamping groove, and an outer stainless steel filter screen is arranged in the lower clamping groove.
6. The mining sensor sensing element protection air chamber structure as claimed in claim 1, wherein the number of the air vents is not less than 4, and the air vents are uniformly distributed around the outer side of the air inlet.
7. The mining sensor sensitive element protection air chamber structure according to claim 5, characterized in that a retainer ring groove for clamping a retainer ring is arranged in the outer shell, the retainer ring groove is closely adjacent to the upper portion of the upper clamping groove and the lower portion of the lining, the outer diameter of the retainer ring groove is larger than that of the upper clamping groove, the retainer ring is clamped in the retainer ring groove, and the retainer ring limits the moving space of the dustproof filter screen in the vertical direction.
8. The mining sensor sensing element shielding plenum structure of any of claims 1-7, wherein the threaded connections are between the housing and the fitting and between the retainer and the housing.
9. The mining sensor sensitive element protection air chamber structure according to claim 3, wherein an O-shaped ring is clamped at a joint of the shell and the connector after threaded connection, and O-shaped ring grooves for clamping the O-shaped ring are formed in the inner side and the outer side of the first side lining.
10. The mining sensor sensing element shielding plenum structure of claim 1, wherein the lining is made of nylon 66.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111094675.3A CN113884622B (en) | 2021-09-17 | 2021-09-17 | Protective air chamber structure of sensitive element of mining sensor |
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| CN202111094675.3A CN113884622B (en) | 2021-09-17 | 2021-09-17 | Protective air chamber structure of sensitive element of mining sensor |
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| CN113884622B CN113884622B (en) | 2023-11-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114487293A (en) * | 2022-01-21 | 2022-05-13 | 天地（常州）自动化股份有限公司 | Gas sensor with built-in piezoelectric fan |
| CN114544873A (en) * | 2022-02-18 | 2022-05-27 | 天地（常州）自动化股份有限公司 | Gas probe protection structure |
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