CN219776967U - High-sealing monocrystalline silicon differential pressure sensor - Google Patents
High-sealing monocrystalline silicon differential pressure sensor Download PDFInfo
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- CN219776967U CN219776967U CN202321188095.5U CN202321188095U CN219776967U CN 219776967 U CN219776967 U CN 219776967U CN 202321188095 U CN202321188095 U CN 202321188095U CN 219776967 U CN219776967 U CN 219776967U
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- pressure screw
- screw hole
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- differential pressure
- positive pressure
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- 238000007789 sealing Methods 0.000 title claims abstract description 18
- 229910021421 monocrystalline silicon Inorganic materials 0.000 title claims abstract description 15
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of monocrystalline silicon differential pressure sensors, and discloses a high-sealing monocrystalline silicon differential pressure sensor, which comprises a differential pressure sensor main body, positive pressure screw holes arranged on one side of the differential pressure sensor main body, negative pressure screw holes relatively distributed on one side of the positive pressure screw holes, and a communicating cylinder fixedly arranged at the top of the differential pressure sensor main body, wherein groove parts are arranged at openings of the positive pressure screw holes and the negative pressure screw holes; the trigger piece, the locking ring, the link gear. After the medium connecting pipe fitting is combined with the positive pressure screw hole and the negative pressure screw hole, the trigger piece is pressed, the locking ring at the outer sides of the tail ends of the positive pressure screw hole and the negative pressure screw hole is pressed close to the ports of the positive pressure screw hole and the negative pressure screw hole through the linkage mechanism, and the sealing rubber pad on the surface of the locking ring covers the gap between the connecting pipe fitting and the threads of the positive pressure screw hole, so that the medium discharged from the connecting pipe fitting cannot overflow to the threads of the positive pressure screw hole and the negative pressure screw hole along the gap, and the tightness of the whole sensor is improved.
Description
Technical Field
The utility model relates to the technical field of monocrystalline silicon differential pressure sensors, in particular to a high-sealing monocrystalline silicon differential pressure sensor.
Background
A differential pressure sensor is a sensor for measuring the difference between two pressures, typically the pressure difference across a device or component; differential pressure sensors are a common tool in the industry for measuring the pressure difference of a gas or liquid.
The differential pressure sensor generally comprises a high-pressure cavity, a low-pressure cavity, a central diaphragm, an isolation diaphragm, a base core component, a connecting pipe and the like, when a medium passes through the sensor, the differential pressure on two sides can enable the resistance of the core to change, so that output voltage is changed, after the medium communicating pipe is connected with the L end and the H end of the sensor, the communicating pipe stretches into the L-shaped screw hole, the port part of the communicating pipe and the port part of the screw hole are subjected to multiple threaded connection to easily generate certain abrasion, a certain gap is generated at the position, and the medium is easy to permeate into the screw hole along the gap, so that the connection use of the subsequent screw hole is affected.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects existing in the prior art, the utility model provides a high-sealing monocrystalline silicon differential pressure sensor which can effectively solve the problems in the prior art.
(II) technical scheme
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
the utility model discloses a high-sealing monocrystalline silicon differential pressure sensor, which comprises a differential pressure sensor main body, a positive pressure screw hole arranged on one side of the differential pressure sensor main body, a negative pressure screw hole relatively distributed on one side of the positive pressure screw hole and a communicating cylinder fixedly arranged at the top of the differential pressure sensor main body, wherein the openings of the positive pressure screw hole and the negative pressure screw hole are provided with groove parts;
the trigger pieces are arranged in the grooves at the openings of the positive pressure screw holes and the negative pressure screw holes, and the trigger pieces at the positive pressure screw holes and the negative pressure screw holes are symmetrically distributed up and down;
the locking rings are provided with two groups, are respectively positioned in the positive pressure cavity and the negative pressure cavity and are positioned at the positions of the positive pressure screw hole and the negative pressure screw hole which extend into the port in the differential pressure sensor main body;
and the linkage mechanism is used for connecting the two groups of trigger pieces and the locking ring which are distributed up and down, so that synchronous movement of the trigger pieces and the locking ring is completed, and the locking ring is tightly attached to the ports of the positive pressure screw hole and the negative pressure screw hole to complete high-strength sealing after the trigger pieces are tightly pressed.
Still further, the link gear includes trigger lever, pinion rack, drive roller and driven lever, the terminal surface that the trigger lever was fixed in the trigger piece, the driven lever sets up in the below of trigger lever, the drive roller sets up between trigger lever and driven lever, the pinion rack is fixed in the terminal surface that trigger lever and driven lever are close to the drive roller.
Further, a plurality of groups of racks are arranged on the outer wall of the roller body of the driving roller at annular intervals, and the racks are meshed with the toothed plate.
Further, the transmission of the trigger lever and the driven lever through the drive roller has opposite directions of movement.
Furthermore, a first spring is fixedly arranged at one end of the trigger rod, which is far away from the trigger piece, one end of the driven rod is fixed with the locking ring, and a second spring is fixedly arranged at the other end of the driven rod.
Further, the surface of the locking ring is attached with a sealing rubber pad.
(III) beneficial effects
Compared with the known public technology, the technical scheme provided by the utility model has the following beneficial effects:
according to the utility model, the trigger pieces which are vertically and symmetrically distributed are arranged at the ports of the positive pressure screw hole and the negative pressure screw hole, after the medium connecting pipe fitting is combined with the positive pressure screw hole and the negative pressure screw hole, the trigger pieces are pressed, the locking rings at the outer sides of the tail ends of the positive pressure screw hole and the negative pressure screw hole are close to the ports of the positive pressure screw hole and the negative pressure screw hole through the linkage mechanism, the sealing rubber pad on the surface of the locking rings covers the gap between the connecting pipe fitting and the threads of the positive pressure screw hole, so that the medium discharged from the connecting pipe fitting cannot overflow along the gap to the threads of the positive pressure screw hole and the negative pressure screw hole, the tightness of the whole sensor is improved, and the closing strength is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is an internal view of a differential pressure sensor body of the present utility model;
FIG. 3 is an enlarged view of the port of the positive pressure screw hole in the present utility model;
reference numerals in the drawings represent respectively: 1. a differential pressure sensor body; 2. positive pressure screw holes; 3. negative pressure screw holes; 4. a communicating tube; 5. a trigger piece; 6. a trigger lever; 7. a first spring; 8. a toothed plate; 9. a driving roller; 10. a driven rod; 11. a second spring; 12. a locking ring; 13. and (5) sealing the rubber gasket.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model is further described below with reference to examples.
Examples
1-3, the high-sealing monocrystalline silicon differential pressure sensor of the embodiment comprises a differential pressure sensor main body 1, a positive pressure screw hole 2 arranged on one side of the differential pressure sensor main body 1, a negative pressure screw hole 3 relatively distributed on one side of the positive pressure screw hole 2, and a communicating cylinder 4 fixedly arranged at the top of the differential pressure sensor main body 1, wherein groove parts are arranged at openings of the positive pressure screw hole 2 and the negative pressure screw hole 3, and a group of openings are formed in the upper part and the lower part of the groove parts; the trigger piece 5 is arranged in the openings of the groove parts at the openings of the positive pressure screw hole 2 and the negative pressure screw hole 3, the trigger piece 5 can move back and forth in the openings, and the trigger pieces 5 at the positive pressure screw hole 2 and the negative pressure screw hole 3 are symmetrically distributed up and down; the locking rings 12 are arranged in the positive pressure cavity and the negative pressure cavity respectively, the locking rings are positioned at the ports of the positive pressure screw hole 2 and the negative pressure screw hole 3 extending into the differential pressure sensor main body 1, each group of locking rings 12 is provided with two groups of trigger pieces 5 distributed up and down in front, the locking rings 12 are of annular structures, after the communicating pipe fitting is combined with the positive pressure screw hole 2 in a threaded manner, the front port of the communicating pipe fitting extends into the opening of the positive pressure screw hole 2, and at the moment, the locking rings 12 of the annular structures are attached to the gap between the pipe orifice of the communicating pipe fitting and the positive pressure screw hole 2; the linkage mechanism is used for connecting two groups of trigger pieces 5 and locking rings 12 which are distributed up and down, completing synchronous movement of the trigger pieces 5 and the locking rings 12, realizing that the locking rings 12 are tightly attached to ports of the positive pressure screw holes 2 and the negative pressure screw holes 3 after the trigger pieces 5 are tightly pressed, completing high-strength sealing, the linkage mechanism comprises a trigger rod 6, a toothed plate 8, a driving roller 9 and a driven rod 10, wherein the trigger rod 6 is fixed on the end face of the trigger piece 5, the driven rod 10 is arranged below the trigger rod 6, the driving roller 9 is arranged between the trigger rod 6 and the driven rod 10, the toothed plate 8 is fixed on the end faces of the trigger rod 6 and the driven rod 10, which are close to the driving roller 9, a plurality of groups of racks are arranged on the annular space of the outer wall of the roller body of the driving roller 9, the racks are meshed with the toothed plate 8, one end of the trigger rod 6, which is far away from the trigger pieces 5, is fixedly provided with a first spring 7, one end of the driven rod 10 is fixed with the locking rings 12, the other end of the driven rod 10 is fixedly provided with a second spring 11, the opposite surfaces of the trigger rod 6 and the driven rod 10 adopt a planar structure, the toothed plate 8 is transversely distributed at a space at a distance from the planar structure, a space allowing the trigger rod 6 and the driven rod 10 to move is arranged in a positive pressure cavity and a negative pressure cavity of the differential pressure sensor main body 1, when a communicating pipe fitting is in threaded connection with the positive pressure screw hole 2 and finally presses the trigger piece 5 inwards, the trigger rod 6 generates inward movement displacement to compress the spring I7, two ends of the driving roller 9 are connected with the inner wall of the differential pressure sensor main body 1 through rotatable supporting rods, the driving roller 9 is driven to rotate after the movement of the trigger rod 6, the driven rod 10 and the trigger rod 6 are driven to move after the rotation of the driving roller 9, at the moment, a locking ring 12 fixedly connected with the driven rod 10 moves towards a pipe orifice of the communicating pipe fitting, and finally the locking ring 12 is tightly attached to the pipe orifice, the pipe orifice of the communicating pipe fitting and the gap between the positive pressure screw holes 2 are closed, in order to improve the sealing strength, the sealing rubber gasket 13 is arranged on the end face, close to the communicating pipe fitting, of the locking ring 12, the communicating pipe fitting is directly taken out from the positive pressure screw holes 2 in a rotating way, and the locking ring 12 can be separated from a clinging state, so that the operation is more convenient and simple.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (6)
1. A high-sealing monocrystalline silicon differential pressure sensor comprises a differential pressure sensor main body (1), a positive pressure screw hole (2) arranged on one side of the differential pressure sensor main body (1), negative pressure screw holes (3) relatively distributed on one side of the positive pressure screw hole (2) and a communicating cylinder (4) fixedly arranged at the top of the differential pressure sensor main body (1), wherein groove parts are arranged at openings of the positive pressure screw hole (2) and the negative pressure screw hole (3);
the method is characterized in that:
the trigger pieces (5) are arranged in the grooves at the openings of the positive pressure screw holes (2) and the negative pressure screw holes (3), and the trigger pieces (5) at the positive pressure screw holes (2) and the negative pressure screw holes (3) are symmetrically distributed up and down;
the locking rings (12) are arranged in two groups, are respectively positioned in the positive pressure cavity and the negative pressure cavity and are positioned at the port where the positive pressure screw hole (2) and the negative pressure screw hole (3) extend into the differential pressure sensor main body (1);
the linkage mechanism is used for connecting two groups of trigger pieces (5) and locking rings (12) which are distributed up and down, synchronous movement of the trigger pieces (5) and the locking rings (12) is completed, and after the trigger pieces (5) are compressed, the locking rings (12) are tightly attached to ports of the positive pressure screw holes (2) and the negative pressure screw holes (3) to complete high-strength sealing.
2. A highly encapsulated single crystal silicon differential pressure sensor as defined in claim 1 wherein: the linkage mechanism comprises a trigger rod (6), a toothed plate (8), a driving roller (9) and a driven rod (10), wherein the trigger rod (6) is fixed on the end face of the trigger piece (5), the driven rod (10) is arranged below the trigger rod (6), the driving roller (9) is arranged between the trigger rod (6) and the driven rod (10), and the toothed plate (8) is fixed on the end face of the trigger rod (6) and the driven rod (10) close to the driving roller (9).
3. A highly encapsulated single crystal silicon differential pressure sensor as defined in claim 1 wherein: a plurality of groups of racks are arranged on the outer wall of the roller body of the driving roller (9) at annular intervals, and the racks are meshed with the toothed plate (8).
4. A highly encapsulated single crystal silicon differential pressure sensor as defined in claim 1 wherein: the trigger lever (6) and the driven lever (10) have opposite directions of movement through the drive roller (9).
5. A highly encapsulated single crystal silicon differential pressure sensor as defined in claim 1 wherein: one end of the trigger rod (6) far away from the trigger piece (5) is fixedly provided with a first spring (7), one end of the driven rod (10) is fixed with the locking ring (12), and the other end of the driven rod (10) is fixedly provided with a second spring (11).
6. A highly encapsulated single crystal silicon differential pressure sensor as defined in claim 1 wherein: a sealing rubber pad (13) is attached to the surface of the locking ring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321188095.5U CN219776967U (en) | 2023-05-17 | 2023-05-17 | High-sealing monocrystalline silicon differential pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321188095.5U CN219776967U (en) | 2023-05-17 | 2023-05-17 | High-sealing monocrystalline silicon differential pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219776967U true CN219776967U (en) | 2023-09-29 |
Family
ID=88111272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321188095.5U Active CN219776967U (en) | 2023-05-17 | 2023-05-17 | High-sealing monocrystalline silicon differential pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219776967U (en) |
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2023
- 2023-05-17 CN CN202321188095.5U patent/CN219776967U/en active Active
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