CN211954021U - Pneumatic displacement sensor - Google Patents
Pneumatic displacement sensor Download PDFInfo
- Publication number
- CN211954021U CN211954021U CN202021068881.8U CN202021068881U CN211954021U CN 211954021 U CN211954021 U CN 211954021U CN 202021068881 U CN202021068881 U CN 202021068881U CN 211954021 U CN211954021 U CN 211954021U
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- China
- Prior art keywords
- magnetic
- end cover
- shell
- magnetic head
- displacement sensor
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- 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.)
- Expired - Fee Related
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 15
- 239000012535 impurity Substances 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The utility model discloses a pneumatic displacement sensor, which comprises an outer shell, shell end seal installs the magnetic scale end cover, fixed mounting has the magnetic grid chi on the magnetic scale end cover, magnetic grid chi slidable mounting is in the magnetic head, magnetic head tip fixed mounting has the magnetic head end cover, magnetic head end cover slidable mounting is on the dabber inner wall, shell slidable mounting is at the dabber surface, shell surface swing joint has sliding support, the fixed surface of dabber installs the lower carriage. The utility model discloses a, form the air cavity between shell and magnetic scale end cover, the magnetic head end cover, let in dry, clean pressure gas in the air cavity, can guarantee that the air cavity is the malleation to prevent that impurity etc. from getting into the magnetic grid chi that the sensor inner chamber caused the sensor and rustting, the card is dead, thereby prolonged the life of sensor.
Description
Technical Field
The utility model relates to a sensor equipment field, concretely relates to pneumatic displacement sensor.
Background
At present, sensors for oil cylinders of steel mills at home and abroad are fixedly connected with the oil cylinders so as to keep the synchronous operation of the sensors and the oil cylinders and achieve the purpose of detecting displacement. Inside a large amount of vapor and dust can slide along with the sensor and get into in the operation process, get into inside back when vapor and dust, can adsorb on the magnetic grid chi, cause the magnetic grid chi to die with the magnetic head card, unable normal use.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a pneumatic displacement sensor can effectively solve the problem among the background art.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
a pneumatic displacement sensor comprises a shell, wherein a magnetic scale end cover is hermetically arranged at the end part of the shell, a magnetic grid scale is fixedly arranged on the magnetic scale end cover, the magnetic grid scale is slidably arranged in a magnetic head, a magnetic head end cover is fixedly arranged at the end part of the magnetic head, the magnetic head end cover is slidably arranged on the inner wall of a mandrel, the shell is slidably arranged on the outer surface of the mandrel, a sliding support is movably connected to the outer surface of the shell, and a lower support is fixedly arranged on the outer surface of the mandrel;
an air cavity is formed among the shell, the magnetic scale end cover, the core shaft and the magnetic head end cover, an air inlet channel and an air outlet channel are formed on the core shaft, an air inlet airflow channel is formed between the core shaft and the inner wall of the shell, an air outlet airflow channel is formed between the magnetic head and the inner wall of the core shaft, one end of the air inlet channel is communicated with an external compressed air source through an air inlet pipe, the other end of the air inlet channel is communicated with the air cavity through the air inlet airflow channel, one end of the air outlet channel is communicated with an air outlet pipe in a sealing mode, and the other end of the.
Preferably, a data line is arranged in the exhaust channel, one end of the data line is fixedly connected with the end part of the magnetic head, and the other end of the data line is electrically connected with an external controller.
Preferably, the magnetic grid ruler is fixedly installed and connected to a chuck, the chuck is fixedly clamped on a flange, and the flange is fixedly installed in a clamping groove formed in the end cover of the magnetic ruler through a bolt.
Preferably, the end part of the shell is provided with a limiting fixture block, and the limiting fixture block is installed in a matched manner with a boss on the mandrel.
Preferably, a sealing groove is formed in the surface of the limiting clamping block, and a sealing ring is clamped in the sealing groove.
Preferably, the end cover of the magnetic scale is sleeved with a sealing ring.
The utility model provides a pneumatic displacement sensor possesses following beneficial effect: an air cavity is formed between the shell and the magnetic scale end cover and the magnetic head end cover, dry and clean pressure gas is introduced into the air cavity, and positive pressure can be ensured in the air cavity, so that impurities and the like are prevented from entering the inner cavity of the sensor to cause the magnetic scale of the sensor to rust and be blocked, and the service life of the sensor is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
in the figure: 1. a housing; 2. a magnetic scale end cover; 3. a magnetic grid ruler; 4. a magnetic head; 5. a head end cap; 6. a mandrel; 7. a sliding support; 8. a lower bracket; 9. an air cavity; 10. an air intake passage; 11. an exhaust passage; 12. an intake airflow passage; 13. an exhaust gas flow passage; 14. a chuck; 15. a card slot; 16. a limiting clamping block; 17. a boss; 18. a sealing groove; 19. a seal ring; 20. ejecting the head; 21. and (4) a flange.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention will be combined to clearly and completely describe the technical solutions in the embodiments of the present invention.
In the first embodiment, as shown in fig. 1 to 2, a pneumatic displacement sensor includes a housing 1, a magnetic scale end cover 2 is mounted at an end of the housing 1 in a sealing manner, a plunger 20 is arranged on the magnetic scale end cover 2, the plunger 20 is mounted at the bottom of a piston pressure plate of an oil cylinder in a propping manner, even if the oil cylinder slightly deflects, an angle of the magnetic scale 3 is not affected, the magnetic scale end cover 2 is fixedly mounted with a magnetic grid scale 3, the magnetic grid scale 3 is slidably mounted in a magnetic head 4, a magnetic head end cover 5 is mounted at an end of the magnetic head 4, a sealing ring 19 is sleeved on the magnetic scale end cover 2, and a gap appears between the housing 1 and the magnetic head. The magnetic head end cover 5 is slidably arranged on the inner wall of the core shaft 6, the shell 1 is slidably arranged on the outer surface of the core shaft 6, the outer surface of the shell 1 is movably connected with a sliding support 7, and the outer surface of the core shaft 6 is fixedly provided with a lower support 8; the sliding support 7 is fixedly arranged at the telescopic end of the oil cylinder, and the lower support 8 is fixedly arranged at the fixed end of the oil cylinder.
Shell 1, magnetic scale end cover 2 and dabber 6, form air cavity 9 between the magnetic head end cover 5, inlet channel 10 and exhaust passage 11 have been seted up on the dabber 6, form inlet airflow channel 12 between dabber 6 and the 1 inner wall of shell, form exhaust airflow channel 13 between magnetic head 4 and the 6 inner walls of dabber, inlet channel 10's one end is passed through intake pipe and outside compressed air source intercommunication, inlet channel 10's the other end is passed through inlet airflow channel 12 and air cavity 9 intercommunication, exhaust passage 11's one end and the sealed intercommunication of blast pipe, exhaust passage 11's the other end is passed through exhaust airflow channel 13 and air cavity 9 intercommunication.
The working principle is as follows: the magnetic scale end cover 2, the chuck 14 and the shell 1 form a sliding body, when the oil cylinder does telescopic motion, the shell 1 moves back and forth on the mandrel 6 along with the sliding support 7, namely, the magnetic scale 3 fixedly connected to the chuck 14 displaces in the magnetic head 4 in the inner cavity of the mandrel 6 to generate reading, and further the displacement information is transmitted to an external controller to form a sensor device; during the use, with dry, clean compressed air loop through inlet channel 10, inlet airflow channel 12 flows into air cavity 9, loops through exhaust airflow channel 13, exhaust passage 11 discharges in following air cavity 9 again, because inside air cavity 9 expert has compressed air, sensor internal pressure is greater than external pressure, outside vapor and impurity can't get into the sensor inner chamber, avoid gluing on the magnetic grid chi 3 to have the impurity card in magnetic head 4 to damage the sensor.
In the second embodiment, as a preferable technical solution of the first embodiment, a data line is disposed in the exhaust channel 11, one end of the data line is fixedly connected with the end of the magnetic head 4, the other end of the data line is electrically connected with an external controller, the magnetic scale 3 moves back and forth in the magnetic head 4 to cause a magnetic field change, and the changed data is transmitted to the external controller through the data line on the magnetic head 4.
In a third embodiment, as a preferred technical solution of the first embodiment, the magnetic scale 3 is fixedly installed and connected to the chuck 14, the chuck 14 is fixedly clamped on the flange 21, the flange 21 is fixedly installed in the clamping groove 15 formed in the magnetic scale end cover 2 through a bolt, when the magnetic scale is installed, the magnetic scale 3 is installed on the chuck 14 and the chuck 14 fixes the flange 21, the flange 21 is fixedly installed on the magnetic scale end cover 2, and the magnetic scale end cover 2 is connected to the housing 1 through a thread, when the magnetic scale 3 needs to be replaced, the magnetic scale end cover 2 is directly unscrewed from the housing 1, and the fixing flange 21 is detached from the magnetic scale end cover 2, so that the magnetic scale 3 can be replaced easily.
Fourth, this embodiment is taken as a preferred technical scheme of first embodiment, and the end of shell 1 is provided with spacing fixture block 16, and spacing fixture block 16 matches with boss 17 on dabber 6 and installs, and spacing fixture block 16 and boss 17 joint have seted up seal groove 18 on the spacing fixture block 16 surface, and the joint is equipped with sealing washer 19 in the seal groove 18, and is spacing to shell 1 when the hydro-cylinder removes, and sealing washer 19 seals shell 1, prevents that air cavity 9 from leaking and pressing.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; the pattern filling in the drawings of the utility model does not represent the material of the structure, and only distinguishes the structure; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (6)
1. A pneumatic displacement sensor, characterized by: the magnetic scale comprises a shell, wherein a magnetic scale end cover is hermetically arranged at the end part of the shell, a magnetic grid scale is fixedly arranged on the magnetic scale end cover, the magnetic grid scale is slidably arranged in a magnetic head, a magnetic head end cover is fixedly arranged at the end part of the magnetic head, the magnetic head end cover is slidably arranged on the inner wall of a mandrel, the shell is slidably arranged on the outer surface of the mandrel, a sliding support is movably connected to the outer surface of the shell, and a lower support is fixedly arranged on the outer surface of the mandrel;
an air cavity is formed among the shell, the magnetic scale end cover, the core shaft and the magnetic head end cover, an air inlet channel and an air outlet channel are formed on the core shaft, an air inlet airflow channel is formed between the core shaft and the inner wall of the shell, an air outlet airflow channel is formed between the magnetic head and the inner wall of the core shaft, one end of the air inlet channel is communicated with an external compressed air source through an air inlet pipe, the other end of the air inlet channel is communicated with the air cavity through the air inlet airflow channel, one end of the air outlet channel is communicated with an air outlet pipe in a sealing mode, and the other end of the.
2. A pneumatic displacement sensor according to claim 1, wherein: and a data line is arranged in the exhaust channel, one end of the data line is fixedly connected with the end part of the magnetic head, and the other end of the data line is electrically connected with an external controller.
3. A pneumatic displacement sensor according to claim 1, wherein: the magnetic grid ruler is fixedly installed and connected to the chuck, the chuck is fixedly clamped on the flange, and the flange is fixedly installed in a clamping groove formed in the end cover of the magnetic ruler through bolts.
4. A pneumatic displacement sensor according to claim 1, wherein: the end part of the shell is provided with a limiting fixture block, and the limiting fixture block is installed in a matching way with a boss on the mandrel.
5. A pneumatic displacement sensor according to claim 4, wherein: the surface of the limiting clamping block is provided with a sealing groove, and a sealing ring is clamped in the sealing groove.
6. A pneumatic displacement sensor according to claim 1, wherein: and the end cover of the magnetic scale is sleeved with a sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021068881.8U CN211954021U (en) | 2020-06-11 | 2020-06-11 | Pneumatic displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021068881.8U CN211954021U (en) | 2020-06-11 | 2020-06-11 | Pneumatic displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211954021U true CN211954021U (en) | 2020-11-17 |
Family
ID=73159569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021068881.8U Expired - Fee Related CN211954021U (en) | 2020-06-11 | 2020-06-11 | Pneumatic displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211954021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447984A (en) * | 2021-06-29 | 2021-09-28 | 攀钢集团西昌钢钒有限公司 | Anti-corrosion in-place detection device |
-
2020
- 2020-06-11 CN CN202021068881.8U patent/CN211954021U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447984A (en) * | 2021-06-29 | 2021-09-28 | 攀钢集团西昌钢钒有限公司 | Anti-corrosion in-place detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201117 |
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| CF01 | Termination of patent right due to non-payment of annual fee |