CN114414137B - Dustproof cap of pressure sensor - Google Patents
Dustproof cap of pressure sensor Download PDFInfo
- Publication number
- CN114414137B CN114414137B CN202210091201.1A CN202210091201A CN114414137B CN 114414137 B CN114414137 B CN 114414137B CN 202210091201 A CN202210091201 A CN 202210091201A CN 114414137 B CN114414137 B CN 114414137B
- Authority
- CN
- China
- Prior art keywords
- pressure sensor
- dustproof
- cavity
- cap body
- dust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000428 dust Substances 0.000 claims abstract description 37
- 238000005192 partition Methods 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 abstract description 26
- 238000001914 filtration Methods 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a dustproof cap of a pressure sensor, which comprises a cap body, wherein the cap body is horizontally arranged on the pressure sensor and is cylindrical; the dustproof clapboard is arranged in the cap body and divides the inner cavity of the cap body into a first cavity and a second cavity, and a plurality of vent holes which are communicated with the first cavity and the second cavity are formed in the dustproof clapboard; the side wall of the cap body is provided with a plurality of pairs of air inlets which are oppositely arranged and communicated with the first cavity. The invention utilizes the air inlet hole on the side wall of the cap body and the vent hole on the dustproof partition plate to form secondary filtration for sand and dust in the external environment; sand dust is further prevented from entering the pressure sensor; in addition, the sand dust can be discharged from the air inlet at the other end, so that the sand dust is prevented from accumulating and even blocking in the dust cap; therefore, the pressure sensor provided by the invention has a dustproof effect, and the testing precision and stability of the pressure sensor can be ensured.
Description
Technical Field
The invention relates to the technical field of pressure sensors, in particular to a dustproof cap of a pressure sensor.
Background
A pressure sensor is a device or apparatus that senses a pressure signal and converts the pressure signal to a usable, outputtable electrical signal according to a certain law. The pressure sensor is the most commonly used sensor in industrial practice, is widely applied to various industrial self-control environments, and relates to various industries such as water conservancy and hydropower, railway traffic, intelligent building, production self-control, aerospace, military industry, petrochemical industry, oil well, electric power, ships, machine tools, pipelines and the like.
In order to sense external pressure signals, the pressure sensor in the pressure sensor is communicated with the external environment, so that a protective cap is usually arranged at the tail end of a communication air passage of the pressure sensor, and a plurality of air inlets with smaller apertures are arranged at the end part of the protective cap so as to prevent large-particle sand dust from entering the pressure sensor and damaging the pressure sensor.
However, through observation, fine dust can still enter the pressure sensor through the air inlet hole and is attached to the pressure sensitive element, so that the testing precision and stability of the sensor are affected; further, fine dust is likely to accumulate in the sensor and cannot be discharged, and thus clogging is likely to occur, which leads to non-ventilation and sensor failure.
In view of the above, the present inventors have developed and devised the present invention by intensively conceived and actively studied and improved attempts to solve various drawbacks and inconveniences caused by the above-mentioned imperfect structural design of the pressure sensor.
Disclosure of Invention
The invention aims to provide a dustproof cap of a pressure sensor, which has a dustproof effect and is used for ensuring the testing precision and stability of the pressure sensor.
In order to achieve the above object, the solution of the present invention is:
The dustproof cap of the pressure sensor comprises a cap body, wherein the cap body is horizontally arranged on the pressure sensor and is cylindrical; the dustproof clapboard is arranged in the cap body and divides the inner cavity of the cap body into a first cavity and a second cavity, and a plurality of vent holes which are communicated with the first cavity and the second cavity are formed in the dustproof clapboard; the side wall of the cap body is provided with a plurality of pairs of air inlets which are oppositely arranged and communicated with the first cavity.
The air inlets of the plurality of pairs of opposite arrangement are distributed in a circumferential array on the circumference of the cap body.
The aperture of the air inlet hole is 1-2mm, and the aperture of the air vent hole is 0.3-0.7mm.
The aperture of the air inlet hole is larger than that of the vent hole.
The dustproof partition plate is provided with a dustproof cylinder towards one end of the first chamber, the vent holes are formed in the dustproof cylinder, the tail ends of the dustproof cylinder exceed the air inlet holes, and an air passing gap is reserved between the outer end face of the dustproof cylinder and the inner wall of the first chamber.
And a circular ring sinking groove is arranged on the dustproof cylinder at a position opposite to the air inlet hole.
The dustproof partition plate is connected with the cap body in a laser welding mode.
After the scheme is adopted, the two-stage filtration is formed on sand dust in the external environment by utilizing the air inlet holes on the side wall of the cap body and the air vent holes on the dustproof partition plate, so that the sand dust is prevented from entering the pressure sensor; after entering the first cavity from the air inlet at one end, the sand dust only falls down under the action of gravity and cannot enter the second cavity through the vent holes on the dustproof partition plate, so that the sand dust is further prevented from entering the pressure sensor; in addition, the sand dust can be discharged from the air inlet at the other end, so that the sand dust is prevented from accumulating and even blocking in the dust cap; therefore, the pressure sensor provided by the invention has a dustproof effect, and the testing precision and stability of the pressure sensor can be ensured.
Drawings
FIG. 1 is an exploded view of a preferred embodiment of the present invention;
fig. 2 is a cross-sectional view of a preferred embodiment of the present invention.
Detailed Description
In order to further explain the technical scheme of the invention, the invention is explained in detail by specific examples.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientation or positional relationship based on that shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
Referring to fig. 1 to 2, a preferred embodiment of a dust cap for a pressure sensor according to the present invention includes a cap body 1, wherein the cap body 1 is horizontally mounted on the pressure sensor and has a cylindrical shape; the dustproof clapboard 2 is arranged in the cap body 1 and divides the inner cavity of the cap body 1 into a first cavity 11 and a second cavity 12, and a plurality of vent holes 21 which are communicated with the first cavity 11 and the second cavity 12 are arranged on the dustproof clapboard 2; wherein, the side wall of the cap body 1 is provided with a plurality of pairs of air inlets 13 which are oppositely arranged and communicated with the first chamber 11.
When the dustproof partition plate is used, the dustproof partition plate 2 is firstly arranged in the cap body 1, then the cap body 1 is horizontally arranged on the pressure sensor, and the inner cavity of the cap body 1 is communicated with the communication air passage of the pressure sensor. The pressure sensitive element inside the pressure sensor is communicated with the external environment through the communicating air passage, the second chamber 12, the vent hole 21, the first chamber 11 and the air inlet hole 13 which are communicated in sequence, so that the pressure signal of the external environment can be sensed.
The invention is characterized in that the invention utilizes the air inlet hole 13 on the side wall of the cap body 1 and the vent hole 21 on the dustproof baffle plate 2 to form secondary filtration for sand and dust in the external environment, thereby avoiding the sand and dust from entering the pressure sensor; after entering the first chamber 11 from the air inlet hole 13 at one end, the sand and dust only falls down under the action of gravity and cannot enter the second chamber 12 through the air vent 21 on the dustproof partition plate 2, so that the sand and dust are further prevented from entering the pressure sensor; in addition, the sand dust can be discharged from the air inlet hole 13 at the other end, so that the sand dust is prevented from accumulating and even blocking in the dust cap; therefore, the pressure sensor provided by the invention has a dustproof effect, and the testing precision and stability of the pressure sensor can be ensured.
The plurality of pairs of oppositely arranged air inlet holes 13 are distributed in a circumferential array in the circumferential direction of the cap body 1. Thereby adapting to the installation working conditions of different angles, ensuring that the sand and dust can be discharged in time and preventing the sand and dust from accumulating and blocking in the first chamber 11.
The aperture of the air inlet hole 13 is 1-2mm, the aperture of the air vent 21 is 0.3-0.7mm, and the aperture of the air inlet hole 13 is larger than the aperture of the air vent 21. Because the aperture of the air inlet hole 13 is larger, the detected gas in the external environment can be ensured to smoothly enter the first chamber 11, the sand and dust can be discharged from the air inlet hole 13 below, and the air inlet hole 13 with larger aperture and the vent hole 21 with smaller aperture are matched with each other to form secondary filtration, so that the filtration of the sand and dust in the external environment can be effectively ensured.
The dustproof partition plate 2 is provided with a dustproof cylinder 22 at one end facing the first chamber 11, the vent hole 21 is arranged in the dustproof cylinder 22, the tail end of the dustproof cylinder 22 exceeds the air inlet hole 13, and an air gap 14 is reserved between the outer end surface of the dustproof cylinder 22 and the inner wall of the first chamber 11. Through the dustproof cylinder 22, sand and dust slide along the cylindrical surface of the dustproof cylinder 22 after entering the first chamber 11 from the air inlet hole 13 at one end and are discharged from the air inlet hole 13 at the other end, and the detected gas in the external environment can enter the vent hole 21 from the gas passing gap 14; so that it is possible to prevent sand from entering the second chamber 12 from the vent hole 21 at the end of the dustproof cylinder 22, thereby further preventing sand from entering the inside of the pressure sensor.
An annular recess 221 is provided in the dustproof cylinder 22 at a position opposite to the air intake hole 13. By providing the circular ring sinking groove 221, sand and dust enter the first chamber 11 from the air inlet hole 13 at one end under the guidance of the circular ring sinking groove 221, slide down the circular ring sinking groove 221 and are discharged from the air inlet hole 13 at the other end, thereby further avoiding the sand and dust from entering the inside of the pressure sensor.
The dustproof partition plate 2 is connected with the cap body 1 in a laser welding mode. The dustproof partition plate 2 is connected with the cap body 1 in a laser welding mode, so that the connection is firm and stable.
The foregoing description of specific exemplary embodiments of the invention has been presented for the purposes of illustration and description, but is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teachings. The exemplary embodiments were chosen and described in order to explain the principles of the invention and its practical application to thereby enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications, as may be suited to the particular use contemplated by one skilled in the art without departing from the scope of the invention.
Claims (6)
1. A dust cap for a pressure sensor, characterized by: the dust cap comprises
The cap body is horizontally arranged on the pressure sensor and is cylindrical;
The dustproof clapboard is arranged in the cap body and divides the inner cavity of the cap body into a first cavity and a second cavity, and a plurality of vent holes which are communicated with the first cavity and the second cavity are formed in the dustproof clapboard; the dustproof partition plate is provided with a dustproof cylinder at one end facing the first chamber, the vent hole is arranged in the dustproof cylinder, the tail end of the dustproof cylinder exceeds the air inlet hole, and an air passing gap is reserved between the outer end surface of the dustproof cylinder and the inner wall of the first chamber;
The side wall of the cap body is provided with a plurality of pairs of air inlets which are oppositely arranged and communicated with the first cavity.
2. A dust cap for a pressure sensor as set forth in claim 1, wherein: the air inlets of the plurality of pairs of opposite arrangement are distributed in a circumferential array on the circumference of the cap body.
3. A dust cap for a pressure sensor as set forth in claim 1, wherein: the aperture of the air inlet hole is 1-2mm, and the aperture of the air vent hole is 0.3-0.7mm.
4. A dust cap for a pressure sensor as set forth in claim 1, wherein: the aperture of the air inlet hole is larger than that of the vent hole.
5. A dust cap for a pressure sensor as set forth in claim 1, wherein: and a circular ring sinking groove is arranged on the dustproof cylinder at a position opposite to the air inlet hole.
6. A dust cap for a pressure sensor as set forth in claim 1, wherein: the dustproof partition plate is connected with the cap body in a laser welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210091201.1A CN114414137B (en) | 2022-01-26 | 2022-01-26 | Dustproof cap of pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210091201.1A CN114414137B (en) | 2022-01-26 | 2022-01-26 | Dustproof cap of pressure sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114414137A CN114414137A (en) | 2022-04-29 |
| CN114414137B true CN114414137B (en) | 2024-05-28 |
Family
ID=81277176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210091201.1A Active CN114414137B (en) | 2022-01-26 | 2022-01-26 | Dustproof cap of pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114414137B (en) |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR960020914A (en) * | 1994-12-24 | 1996-07-18 | 배순훈 | Motor Dust Cap of Vacuum Cleaner |
| JPH11183222A (en) * | 1997-12-24 | 1999-07-09 | Gastar Corp | Dust collector unit |
| WO2007142103A1 (en) * | 2006-06-08 | 2007-12-13 | Yokowo Co., Ltd. | Tire air-pressure sensor |
| CN205610046U (en) * | 2016-04-22 | 2016-09-28 | 象山杰尔德智能科技有限公司 | Electric power cabinet with dust keeper |
| CN107345819A (en) * | 2017-08-22 | 2017-11-14 | 珠海格力电器股份有限公司 | Sensor mounting box and sensor cluster |
| CN206806817U (en) * | 2017-05-02 | 2017-12-26 | 国网内蒙古东部电力有限公司呼伦贝尔供电公司 | A kind of radiating dustproof multifunction power cabinet |
| CN207717116U (en) * | 2018-01-30 | 2018-08-10 | 湖南应用技术学院 | A kind of Internet of Things sensor that can be dust-proof |
| CN208366904U (en) * | 2018-07-09 | 2019-01-11 | 天津职业技术师范大学 | A kind of electrochemical sensor |
| CN208998995U (en) * | 2018-09-18 | 2019-06-18 | 安徽微泰导航电子科技有限公司 | A kind of pressure sensor of dust-proof antirust |
| CN110736583A (en) * | 2019-11-22 | 2020-01-31 | 武汉飞恩微电子有限公司 | protection structure for air flow direction changing of gauge pressure sensor |
| CN211696788U (en) * | 2020-01-15 | 2020-10-16 | 深圳安培龙科技股份有限公司 | Automobile pressure sensor dustproof protection shell convenient to install |
| CN213068048U (en) * | 2020-11-13 | 2021-04-27 | 李扬顺 | Pressure sensor with dustproof function |
| CN112798178A (en) * | 2021-02-04 | 2021-05-14 | 武汉飞恩微电子有限公司 | Shell assembly for pressure sensor, pressure sensor and packaging method |
| CN213301556U (en) * | 2020-11-19 | 2021-05-28 | 广州市久元自动化设备有限公司 | Industrial intelligent pressure cloud sensor |
| CN112943989A (en) * | 2021-03-18 | 2021-06-11 | 国网河南省电力公司南阳供电公司 | Dustproof cap, SF6 circuit breaker |
| CN213658149U (en) * | 2020-11-03 | 2021-07-09 | 北京亨港汽车配件有限公司 | Novel dirt-proof pressure sensor |
| CN214093220U (en) * | 2020-10-22 | 2021-08-31 | 成都联发恒达机械有限公司 | Back cover for pressure reducing valve |
| CN214667413U (en) * | 2021-04-01 | 2021-11-09 | 普力斯特测控技术(天长)有限公司 | Dustproof structure of pressure sensor |
| CN214702565U (en) * | 2021-03-05 | 2021-11-12 | 无锡芯盾传感科技有限公司 | Automobile pressure sensor dustproof protection shell convenient to install |
| CN214843778U (en) * | 2021-02-04 | 2021-11-23 | 武汉飞恩微电子有限公司 | Shell assembly for pressure sensor and pressure sensor |
| CN215004076U (en) * | 2021-07-01 | 2021-12-03 | 苏州源森特科技有限公司 | Dustproof and oilproof structure of pressure sensor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6672171B2 (en) * | 2001-07-16 | 2004-01-06 | Mks Instruments, Inc. | Combination differential and absolute pressure transducer for load lock control |
| US9217456B2 (en) * | 2013-06-11 | 2015-12-22 | Chicony Power Technology Co., Ltd. | Waterproof, dustproof, breathing bolt |
-
2022
- 2022-01-26 CN CN202210091201.1A patent/CN114414137B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR960020914A (en) * | 1994-12-24 | 1996-07-18 | 배순훈 | Motor Dust Cap of Vacuum Cleaner |
| JPH11183222A (en) * | 1997-12-24 | 1999-07-09 | Gastar Corp | Dust collector unit |
| WO2007142103A1 (en) * | 2006-06-08 | 2007-12-13 | Yokowo Co., Ltd. | Tire air-pressure sensor |
| CN205610046U (en) * | 2016-04-22 | 2016-09-28 | 象山杰尔德智能科技有限公司 | Electric power cabinet with dust keeper |
| CN206806817U (en) * | 2017-05-02 | 2017-12-26 | 国网内蒙古东部电力有限公司呼伦贝尔供电公司 | A kind of radiating dustproof multifunction power cabinet |
| CN107345819A (en) * | 2017-08-22 | 2017-11-14 | 珠海格力电器股份有限公司 | Sensor mounting box and sensor cluster |
| CN207717116U (en) * | 2018-01-30 | 2018-08-10 | 湖南应用技术学院 | A kind of Internet of Things sensor that can be dust-proof |
| CN208366904U (en) * | 2018-07-09 | 2019-01-11 | 天津职业技术师范大学 | A kind of electrochemical sensor |
| CN208998995U (en) * | 2018-09-18 | 2019-06-18 | 安徽微泰导航电子科技有限公司 | A kind of pressure sensor of dust-proof antirust |
| CN110736583A (en) * | 2019-11-22 | 2020-01-31 | 武汉飞恩微电子有限公司 | protection structure for air flow direction changing of gauge pressure sensor |
| CN211696788U (en) * | 2020-01-15 | 2020-10-16 | 深圳安培龙科技股份有限公司 | Automobile pressure sensor dustproof protection shell convenient to install |
| CN214093220U (en) * | 2020-10-22 | 2021-08-31 | 成都联发恒达机械有限公司 | Back cover for pressure reducing valve |
| CN213658149U (en) * | 2020-11-03 | 2021-07-09 | 北京亨港汽车配件有限公司 | Novel dirt-proof pressure sensor |
| CN213068048U (en) * | 2020-11-13 | 2021-04-27 | 李扬顺 | Pressure sensor with dustproof function |
| CN213301556U (en) * | 2020-11-19 | 2021-05-28 | 广州市久元自动化设备有限公司 | Industrial intelligent pressure cloud sensor |
| CN112798178A (en) * | 2021-02-04 | 2021-05-14 | 武汉飞恩微电子有限公司 | Shell assembly for pressure sensor, pressure sensor and packaging method |
| CN214843778U (en) * | 2021-02-04 | 2021-11-23 | 武汉飞恩微电子有限公司 | Shell assembly for pressure sensor and pressure sensor |
| CN214702565U (en) * | 2021-03-05 | 2021-11-12 | 无锡芯盾传感科技有限公司 | Automobile pressure sensor dustproof protection shell convenient to install |
| CN112943989A (en) * | 2021-03-18 | 2021-06-11 | 国网河南省电力公司南阳供电公司 | Dustproof cap, SF6 circuit breaker |
| CN214667413U (en) * | 2021-04-01 | 2021-11-09 | 普力斯特测控技术(天长)有限公司 | Dustproof structure of pressure sensor |
| CN215004076U (en) * | 2021-07-01 | 2021-12-03 | 苏州源森特科技有限公司 | Dustproof and oilproof structure of pressure sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114414137A (en) | 2022-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114414137B (en) | Dustproof cap of pressure sensor | |
| CN105008883A (en) | Pressure measuring instrument | |
| WO2014154259A1 (en) | Hub unit | |
| CN118089810A (en) | Housing and heating, ventilation and air conditioning system comprising the same | |
| CN102346951A (en) | Gas detection alarm | |
| CN100425963C (en) | Tyre pressure detector | |
| CN211715244U (en) | Fuel filter | |
| CN207351521U (en) | A kind of liquid level sensor | |
| CN214373115U (en) | Sensor test fixture | |
| CN211576454U (en) | Gauge pressure is protective structure of air current diversion for sensor | |
| CN211373174U (en) | Pressure indicator of dryer | |
| CN221099951U (en) | Sensor testing device | |
| CN209656139U (en) | A kind of automobile liquid level sensor | |
| CN216483152U (en) | Microminiature inertia measurement shell and microminiature inertia measurement device | |
| CN214471489U (en) | Protective structure of pressure sensor | |
| CN219977457U (en) | Temperature and humidity sensor | |
| CN206399564U (en) | A kind of wireless pressure sensor | |
| CN110736583A (en) | protection structure for air flow direction changing of gauge pressure sensor | |
| CN114323415B (en) | Pressure sensor with overpressure alarm function | |
| CN210198636U (en) | Air inlet pressure sensor | |
| CN219920278U (en) | Miaow head and aerial fog generating device | |
| CN220542322U (en) | Diaphragm protection assembly based on oil filling pressure sensor | |
| CN218469883U (en) | Packaging structure of silicon-based sensor | |
| CN218300004U (en) | Battery sealing ring structure | |
| CN221054368U (en) | Air pressure balancer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |