CN214951960U - Pressure recorder protective sheath - Google Patents
Pressure recorder protective sheath Download PDFInfo
- Publication number
- CN214951960U CN214951960U CN202121519499.9U CN202121519499U CN214951960U CN 214951960 U CN214951960 U CN 214951960U CN 202121519499 U CN202121519499 U CN 202121519499U CN 214951960 U CN214951960 U CN 214951960U
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- cavity
- diversion trench
- shell
- pressure recorder
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Abstract
The utility model discloses a pressure recorder protective sleeve, which comprises a shell; the top or bottom end surface of the shell is provided with an opening; a cavity is arranged in the shell and used for placing the circuit board; the shell comprises a diversion trench, one end of the diversion trench is communicated with the cavity, and the other end of the diversion trench is communicated with the opening; the diversion trench has at least one turning part. The effect of turn portion lies in prolonging the route that the air current got into the cavity inside from the trompil for more dust is attached to in the guiding gutter, effectively reduces the dust and gets into the cavity inside, destroys the pressure recording sensor.
Description
Technical Field
The utility model relates to the pressure recorder field especially involves a pressure recorder protective sheath.
Background
Pressure recorders are commonly used to measure vacuum and instrument internal pressure. The pressure recorder needs to be perforated to measure the pressure, and some fine dust and particles easily enter the surface of the inner core of the pressure recorder, resulting in damage to the core of the pressure recorder.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pressure recorder protective sheath aims at solving the technical problem that pressure recorder's core damaged.
The utility model provides a pressure recorder protective sleeve, which comprises a shell;
the top or bottom end surface of the shell is provided with an opening;
a cavity is arranged in the shell and used for placing the circuit board;
the shell comprises a diversion trench, one end of the diversion trench is communicated with the cavity, and the other end of the diversion trench is communicated with the opening;
the diversion trench has at least one turning part.
Preferably, the diversion trench comprises a first trench body and a second trench body;
one end of the first groove body is communicated with the opening, and the other end of the first groove body is vertically arranged at one end of the second groove body;
one end of the second groove body, which is far away from the first groove body, is communicated with the cavity.
Preferably, the area of the cavity close to the second groove body is provided with an annular vent.
Preferably, the openings are in the form of a matrix of dots.
Preferably, the housing is of cylindrical configuration.
The beneficial effects of the utility model reside in that: the diversion trench is provided with at least one turning part, and the turning part is used for prolonging the path of the airflow entering the cavity from the opening, so that more dust is attached to the diversion trench, the dust entering the cavity is effectively reduced, and the pressure recording sensor is damaged.
Drawings
Fig. 1 is a front cross-sectional view of an embodiment of a pressure recorder of the present invention;
fig. 2 is a schematic top sectional view of an embodiment of a pressure recorder according to the present invention;
fig. 3 is a schematic structural diagram of a pressure recorder according to the present invention;
description of the reference symbols
1. Opening a hole; 2. a cavity; 3. and a diversion trench.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2, the present invention provides a pressure recorder protective cover, comprising a housing;
the top or bottom end surface of the shell is provided with an opening 1;
a cavity 2 is arranged in the shell, wherein the cavity 2 is used for placing a circuit board;
the shell comprises a diversion trench 3, one end of the diversion trench 3 is communicated with the cavity 2, and the other end of the diversion trench 3 is communicated with the opening 1;
the diversion trench 3 has at least one turning part.
The embodiment of the utility model provides an in, the top of shell or bottom terminal surface are equipped with trompil 1, and trompil 1 is the hole site of avoiding the entering of large granule impurity the utility model provides an in, the diameter of trompil 1 is less than 1.5 millimeters, and trompil 1 effect is used for the pressure recorder to measure external pressure. The inner part of the shell is provided with a cavity 2, the cavity 2 is used for placing a circuit board, and the circuit board is provided with a pressure sensor which can be used for measuring external pressure. The shell includes guiding gutter 3, 3 one end of guiding gutter and cavity 2 intercommunication, the other end and trompil 1 intercommunication. The diversion trench 3 is provided with at least one turning part, and the turning part is used for prolonging the path of the airflow entering the cavity 2 from the opening 1, so that more dust is attached to the diversion trench 3, and the dust entering the cavity 2 and damaging the pressure recording sensor are effectively reduced.
Referring to fig. 1, the guiding gutter 3 includes a first gutter body and a second gutter body;
one end of the first groove body is communicated with the opening 1, and the other end of the first groove body is vertically arranged at one end of the second groove body;
one end of the second groove body far away from the first groove body is communicated with the cavity 2.
In the embodiment of the present invention, the diversion trench 3 includes a first trench body and a second trench body. One end of the first groove body is communicated with the open hole 1, the other end of the first groove body is vertically arranged at one end of the second groove body, and one end, far away from the first groove body, of the second groove body is communicated with the cavity 2. Compare in cylindrical through-hole, this guiding gutter 3 structure can effectively prolong the wind path route of guiding gutter 3, reduces the dust and gets into cavity 2.
Referring to fig. 2, an annular vent is arranged in the area of the cavity 2 close to the second groove body.
The embodiment of the utility model provides an in, annular vent can increase the inside airflow of entering pressure recorder, and the even air inlet of each side's position promotes pressure recorder's measurement accuracy.
Referring to fig. 3, the opening 1 is a dot matrix.
In the embodiment of the present invention, the opening 1 is a dot matrix. The opening 1 of the dot matrix is of a multipoint small-aperture structure, and large-particle sundries are effectively prevented from entering the pressure recorder on the premise that the opening requirement of the pressure recorder is met.
Further, the shell is of a cylindrical structure, and the impact resistance of the pressure recorder can be effectively improved by the structure.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (5)
1. A pressure recorder protective sheath, comprising a housing;
the top or bottom end face of the shell is provided with an opening;
a cavity is arranged in the shell, wherein the cavity is used for placing a circuit board;
the shell comprises a diversion trench, one end of the diversion trench is communicated with the cavity, and the other end of the diversion trench is communicated with the opening;
the diversion trench is provided with at least one turning part.
2. A pressure recorder protection cover according to claim 1, wherein the guide channel comprises a first channel body and a second channel body;
one end of the first groove body is communicated with the opening, and the other end of the first groove body is vertically arranged at one end of the second groove body;
one end, far away from the first groove body, of the second groove body is communicated with the cavity.
3. A pressure recorder protective cover according to claim 2 wherein the area of the chamber adjacent the second slot is provided with an annular vent.
4. A pressure recorder protection cover according to claim 3, wherein the openings are in a matrix of dots.
5. A pressure recorder protection cover according to any one of claims 1 to 4, wherein the housing is of cylindrical construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121519499.9U CN214951960U (en) | 2021-07-05 | 2021-07-05 | Pressure recorder protective sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121519499.9U CN214951960U (en) | 2021-07-05 | 2021-07-05 | Pressure recorder protective sheath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214951960U true CN214951960U (en) | 2021-11-30 |
Family
ID=79077246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121519499.9U Active CN214951960U (en) | 2021-07-05 | 2021-07-05 | Pressure recorder protective sheath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214951960U (en) |
-
2021
- 2021-07-05 CN CN202121519499.9U patent/CN214951960U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |