CN112526703A - Chemical industry control instrument convenient to multi-angle is observed - Google Patents
Chemical industry control instrument convenient to multi-angle is observed Download PDFInfo
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- CN112526703A CN112526703A CN202011441293.9A CN202011441293A CN112526703A CN 112526703 A CN112526703 A CN 112526703A CN 202011441293 A CN202011441293 A CN 202011441293A CN 112526703 A CN112526703 A CN 112526703A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/1821—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors for rotating or oscillating mirrors
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Abstract
The invention belongs to the technical field of chemical instrument equipment, and discloses a chemical control instrument convenient for multi-angle observation, which comprises: the instrument comprises an instrument body, wherein an instrument panel is arranged on the instrument body and used for monitoring and controlling chemical operation, and characters or images displayed by the instrument panel are in a mode of mirroring the characters or images; and the observation disc assembly comprises an observation disc body, the observation disc body can be arranged on the instrument body in a swinging mode, the observation disc body faces towards one side of the instrument panel, and a reflecting mirror is arranged on one side of the instrument panel and used for reflecting characters or images displayed on the instrument panel. In the embodiment of the invention, the information on the instrument panel is reflected by the observation panel assembly and the reflecting mirror arranged on the panel body of the observation panel, and the panel body of the observation panel can swing, so that the reflecting angle of the reflecting mirror can be changed, and the multi-angle rotation is suitable for the observation of each angle of a user.
Description
Technical Field
The invention belongs to the technical field of chemical instrument equipment, and particularly relates to a chemical control instrument convenient for multi-angle observation.
Background
In the chemical production process, physical or chemical changes are usually continuously carried out in closed pipelines and equipment, and the chemical production process has the characteristics of high temperature, high pressure, flammability, explosiveness and the like, and various chemical instruments and automation devices are required. The chemical instrument is generally called an industrial automation instrument or a process detection control instrument, is used for controlling a chemical process, is an automation technology tool for detecting and controlling process parameters of the chemical process, can accurately and timely detect the change of various process parameters, and controls main parameters in the process to keep given values or rules, thereby effectively carrying out production operation and realizing automation of the production process so as to ensure stable, reliable and safe production.
Among the prior art, need set up chemical industry control instrument in various complicated environment usually, the ubiquitous installation is too high, install the circumstances such as narrow and small space in corner, and the problem that generally exists under this kind of circumstances is exactly, when needing to carry out the observation of instrument, need vacate the position just to the quotation of instrument, just can conveniently read and clearly indicate the number, observe the difficulty.
Therefore, a chemical control instrument which can be conveniently observed is lacked in the prior art.
Disclosure of Invention
The embodiment of the invention aims to provide a chemical control instrument convenient for multi-angle observation, and aims to solve the problem that the chemical control instrument in the prior art is inconvenient to observe.
The embodiment of the invention is realized in such a way that a chemical control instrument convenient for multi-angle observation comprises:
the instrument comprises an instrument body, wherein an instrument panel is arranged on the instrument body and used for monitoring and controlling chemical operation, and characters or images displayed by the instrument panel are in a mode of mirroring the characters or images; and
the observation dish subassembly, the observation dish subassembly is including observing the dish disk body, it can swing the setting to observe the dish disk body and be in on the instrument body, observe the dish disk body orientation be provided with the speculum on one side of panel board, the speculum is used for the reflection the characters or the image that show on the panel board, it can swing angle of adjustment makes the user accessible to observe the speculum the characters or the image that show on the panel board.
Preferably, in the above technical solution, the observation disc assembly further includes:
the mounting seat is rotatably arranged on the instrument body;
the observation tray body is arranged on the mounting seat and can rotate along with the mounting seat to change the angle of the reflecting mirror to reflect characters or images displayed on the instrument panel.
Preferably, in the above technical solution, the observation tray body may be swingably disposed on the mounting seat, and the observation tray body may be swingably changed in size of an angle between the observation tray body and the instrument panel.
Preferably, in the above technical solution, the mounting seat is connected with the observation tray body through a rotating shaft, a first rotating motor is provided on the mounting seat, and an output shaft of the first rotating motor is connected with the rotating shaft.
Preferably, in the above technical solution, the outer side of the mounting seat is circular, a gear ring is arranged on the outer side of the mounting seat, the meter body is provided with a second rotating motor and a gear, an output shaft of the second rotating motor is connected with the gear, and the gear is in transmission with the gear ring on the outer side of the mounting seat in a matching manner.
Preferably, in the above technical scheme, the instrument body is provided with a chute, the chute is circular, the mounting seat is arranged in the chute, a baffle is detachably arranged on the upper side of the chute, and the baffle is used for limiting and fixing the mounting seat on the chute.
Preferably, in the above technical solution, the instrument panel is rotatably disposed on the instrument body, and the instrument panel is rotatably adjusted to allow the reflecting mirror on the observation tray body to forward reflect characters or images on the instrument panel.
Preferably, in the above technical solution, the display device further includes a control module, the control module is disposed on the instrument body, the control module is connected to the instrument panel, the control device is configured to control a display mode of the instrument panel, the display mode of the instrument panel at least includes forward display and mirror image display, and the mirror image display is a mode in which characters or images are mirrored.
Preferably, in the above technical solution, a display screen is arranged on a side of the observation tray body departing from the instrument panel, the display screen is connected with the control module, and the control module is used for controlling the display screen to display.
Preferably, in the above technical solution, the method further includes:
a remote controller for remotely controlling rotation of the first rotating motor or the second rotating motor.
Compared with the prior art, the chemical control instrument convenient for multi-angle observation provided by the embodiment of the invention has the following beneficial effects:
1. in the embodiment of the invention, by arranging the observation disc assembly, information on the instrument panel can be reflected by the reflecting mirror arranged on the disc body of the observation disc, so that a user can observe contents displayed on the instrument panel by the reflecting mirror, and the disc body of the observation disc can swing, so that the reflecting angle of the reflecting mirror can be changed, and the multi-angle rotation is suitable for observation of the user at various angles;
2. in the embodiment of the invention, the installation seat is rotatably arranged, and the observation disc body is arranged on the installation seat, so that the observation disc body can rotate to change the position, and the observation requirements of more angles are met;
3. in the embodiment of the invention, the display screen is arranged on the other side of the observation disc body, and can be directly observed through the display screen, and the display screen is arranged on the observation disc body, and the angle of the display screen can be changed along with the swinging of the observation disc body, so that the multi-angle observation is adapted;
4. in the embodiment of the invention, the display modes can be switched according to actual needs by arranging the control device, and the switching can be carried out when the direct observation is convenient or the equipment needs to be overhauled;
5. in the embodiment of the invention, the angle of the observation disc body can be remotely controlled and adjusted by arranging the remote controller, so that the observation instrument can read without entering the installation position.
Drawings
Fig. 1 is a schematic view of an assembly structure of a chemical control instrument convenient to observe according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an explosive structure of a chemical control instrument convenient for observation according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a meter body according to an embodiment of the present invention.
In the drawings: 1. a meter body; 11. an instrument panel; 12. a chute; 13. a baffle plate; 2. an observation tray assembly; 21. observing the tray body; 22. a reflective mirror; 23. a mounting seat; 24. a first rotating electric machine; 25. a second rotating electric machine; 26. a gear; 3. a display screen.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
As shown in fig. 1 to 2, an assembly structure schematic diagram and an explosion structure schematic diagram of a chemical control instrument convenient for multi-angle observation provided in the embodiment of the present invention are respectively shown, and the embodiment of the present invention is implemented as follows, a chemical control instrument convenient for multi-angle observation includes:
the instrument comprises an instrument body 1, wherein an instrument panel 11 is arranged on the instrument body 1 and used for monitoring and controlling chemical engineering operation, and characters or images displayed by the instrument panel 11 are in a mode of mirroring the characters or images; and
observe dish subassembly 2, observe dish subassembly 2 including observing dish disk body 21, it can swing the setting to observe dish disk body 21 on the instrument body 1, observe dish disk body 21 orientation be provided with reflecting mirror 22 on one side of panel board 11, reflecting mirror 22 is used for the reflection the characters or the image that show on the panel board 11, it can swing angle of adjustment messenger user's accessible to observe dish disk body 21 reflecting mirror 22 the characters or the image that show on the panel board 11.
The chemical control instrument in the embodiment of the invention can be an improvement based on the chemical control instrument in the prior art, and particularly, the chemical control instrument belongs to an instrument for automatically controlling a controlled variable, compares a measurement signal with a set value, calculates a deviation signal according to a certain control rule, and outputs an operation result as a specified signal. In the chemical industry, the measured value of the controlled variable to be controlled is compared with the required set value to obtain deviation, and the deviation is controlled according to a certain function relation (called control rule), and a control valve or other actuators are operated to control the production process. The chemical control instrument provided by the embodiment of the invention can be an improvement based on a common chemical control instrument in the prior art, and can also be an independently designed chemical control instrument without further description.
The observation panel body 21 may be designed according to the shape and structure of the instrument panel 11, and may be made of a transparent material, so that when a user conveniently and directly observes the instrument, the observation panel does not need to be opened; in addition, the viewing tray assembly may also function to protect the instrument panel 11 from dust.
The dashboard 11 may be a commonly used dashboard product, and the display content and the display mode thereof may be selected according to actual needs, which is not further described herein.
In one embodiment of the present invention, as shown in fig. 1-2, the viewing tray assembly 2 further comprises:
the mounting seat 23 is rotatably arranged on the instrument body 1;
the observation tray body 21 is arranged on the mounting seat 23, and the observation tray body 21 can rotate along with the mounting seat 23 to change the angle of the reflecting mirror 22 to reflect the characters or images displayed on the instrument panel 11.
In the embodiment of the present invention, the instrument panel 11 is illustrated and illustrated as a circle, so that the mounting seat 23 and the observation tray body 21 are both related to a circle, and in other embodiments of the present invention, the design may be modified according to actual needs, and will not be further listed and described herein. The mounting seat 23 may be annular, and the instrument panel 11 may be disposed at the center of the annular, which is described as an example in the embodiment of the present invention, and other simple modifications may be made according to the above description and the illustration of the drawings.
Wherein, when the mount pad 23 is rotatable to be set up, can drive observation dish disk body 21 and rotate, and then make the mirror that radiates rotate round panel board 11, can follow a plurality of angles and reflect, satisfy more observation angle's demand.
Specifically, as shown in fig. 1-2, in an embodiment of the present invention, the observation tray body 21 is swingably disposed on the mounting seat 23, and the observation tray body 21 is swingably movable to change an angle between the observation tray body and the instrument panel 11.
Further, in an embodiment of the present invention, the mounting seat 23 is connected to the observation disk body 21 through a rotating shaft, a first rotating motor 24 is disposed on the mounting seat 23, and an output shaft of the first rotating motor 24 is connected to the rotating shaft.
In an embodiment of the present invention, the outer side of the mounting seat 23 is circular, a gear ring is arranged on the outer side of the mounting seat 23, a second rotating motor 25 and a gear 26 are arranged on the meter body 1, an output shaft of the second rotating motor 25 is connected with the gear 26, and the gear 26 is in transmission fit with the gear ring on the outer side of the mounting seat 23.
The specific types of the first rotating electric machine 24 and the second rotating electric machine 25 are not further described herein, and the electric machines are common devices, and may be specifically connected by a motor connecting shaft. In addition, the ring gear design of the mounting seat 23 may be designed integrally with the mounting seat 23 or detachably, and will not be further described herein.
In an embodiment of the present invention, as shown in fig. 3, which is a schematic structural diagram of a meter body 1 provided in the embodiment of the present invention, a chute 12 is provided on the meter body 1, the chute 12 is circular, an installation seat 23 is provided on the chute 12, a baffle 13 is detachably provided on an upper side of the chute 12, and the baffle 13 is used for limiting and fixing the installation seat 23 on the chute 12.
It can be understood that, clearance fit may be provided between the chute 12 and the mounting seat 23 to realize the sliding of the mounting seat 23, and in addition, the sliding fluency may be improved by providing rolling members such as balls in the chute 12. In addition, in other embodiments of the present invention, the mounting seat 23 may be rotatably disposed on the meter body 1 by means of bearing fit, which is not further listed herein. Further, the baffle 13 is mainly used to shield the sliding chute 12 and fix the mounting seat 23 on the sliding chute 12, which can be detachably mounted and fixed by bolts or screws, and will not be further described herein.
In one embodiment of the present invention, the instrument panel 11 is rotatably disposed on the instrument body 1, and the instrument panel 11 is rotatably adjusted to make the reflecting mirror 22 on the observation tray body 21 positively reflect the text or image on the instrument panel 11.
The instrument panel 11 may be rotated by directly providing a rotating shaft on the instrument body 1, and then disposing the instrument panel 11 on the upper end of the rotating shaft, so that the instrument panel 11 may rotate, which may be implemented by referring to the above-described rotation fixing manner of the mounting seat 23, and will not be further described herein. Specifically, although the mounting seat 23 can rotate, if an observer stands at a position where the direction of the content displayed on the dashboard 11 is not forward, the observer cannot quickly recognize the real content, so in the embodiment of the present invention, the dashboard 11 can be rotatably disposed, so that the observer can control the dashboard 11 to rotate as needed, so that the content displayed on the observer is forward content after being reflected by the reflecting mirror 22 on the observation dashboard body 21.
In an embodiment of the present invention, the display device further includes a control module, the control module is disposed on the meter body 1, the control module is connected to the instrument panel 11, the control device is configured to control a display mode of the instrument panel 11, the display mode of the instrument panel 11 at least includes a forward display mode and a mirror display mode, and the mirror display mode is a mode in which characters or images are mirrored.
The forward display refers to that when people normally observe characters or images, the characters and the images are positive, the contents of the characters and the images can be directly and clearly seen, and the mirror image display refers to information obtained after mirroring the contents displayed in the forward direction; it can be understood that, in the embodiment of the present invention, since the actual content of the dashboard 11 is the character or image after being mirrored, the character or image after being reflected by the reflecting mirror 22 belongs to the forward direction. Furthermore, the control module, which may be connected to the instrument panel 11 via a chip or a microprocessor unit for controlling its display, may be integrated in the electrical unit of the instrument itself, and a description of the control module is not further provided herein, and a person skilled in the art may select a control device from the prior art and program or otherwise configure the control device to implement the above-mentioned functions according to the above description.
Note that, the present invention switches the display mode of the instrument panel 11 by setting the control device, so that the user can switch the display mode according to the actual needs of the user, thereby meeting the use requirements.
In an embodiment of the present invention, a display screen 3 is disposed on a side of the observation tray body 21 away from the instrument panel 11, and the display screen 3 is connected to the control module, and the control module is configured to control the display screen 3 to display.
The display screen 3 can be selected from a common display screen 3 in the prior art, and the corresponding shape structure design can be performed according to the shape structure of the observation tray body 21, which is not further described herein; in addition, the display screen 3 may be fixed by a conventional fixing method. Set up display screen 3 through the one side that deviates from panel board 11 at observation dish disk body 21, and then the reading of chemical industry control instrument can all be observed to the both sides of observing dish disk body 21, has further made things convenient for multi-angle observation instrument.
In one embodiment of the present invention, further comprising:
a remote controller for remotely controlling the rotation of the first rotating motor 24 or the second rotating motor 25.
The specific structure of the remote controller can be designed according to needs, the remote control technology is mature, the technology for controlling the rotation of the motor is mature, further description is omitted, and the remote controller can be designed by a person skilled in the art according to needs.
When the chemical control instrument convenient for multi-angle observation in the embodiment of the invention is used, the chemical control instrument is arranged behind an installation surface, when the reading condition of the instrument panel 11 needs to be observed, the first rotating motor 24 is driven to rotate through the remote controller to drive the observation disc body 21 to rotate, the chemical control instrument stops when the reflecting mirror 22 can reflect the display content of the instrument panel 11, then the display condition of the instrument can be observed, in the process, the multi-angle adjustment can be carried out according to the position of an observer, and the requirement of multi-angle observation can be met; in addition, if the observer cannot observe the display condition of the instrument panel 11 simply by swinging the observation tray body 21, the second rotating motor 25 may be driven by the remote controller, and then the mounting seat 23 is driven to rotate, that is, the observation tray body 21 is driven to rotate, so that the reflecting mirror 22 is located at a position where the content displayed on the instrument panel 11 can be displayed.
Compared with the prior art, the chemical control instrument convenient for multi-angle observation provided by the embodiment of the invention has the following beneficial effects:
1. in the embodiment of the invention, by arranging the observation disc assembly, information on the instrument panel can be reflected by the reflecting mirror arranged on the disc body of the observation disc, so that a user can observe contents displayed on the instrument panel by the reflecting mirror, and the disc body of the observation disc can swing, so that the reflecting angle of the reflecting mirror can be changed, and the multi-angle rotation is suitable for observation of the user at various angles;
2. in the embodiment of the invention, the installation seat is rotatably arranged, and the observation disc body is arranged on the installation seat, so that the observation disc body can rotate to change the position, and the observation requirements of more angles are met;
3. in the embodiment of the invention, the display screen is arranged on the other side of the observation disc body, and can be directly observed through the display screen, and the display screen is arranged on the observation disc body, and the angle of the display screen can be changed along with the swinging of the observation disc body, so that the multi-angle observation is adapted;
4. in the embodiment of the invention, the display modes can be switched according to actual needs by arranging the control device, and the switching can be carried out when the direct observation is convenient or the equipment needs to be overhauled;
5. in the embodiment of the invention, the angle of the observation disc body can be remotely controlled and adjusted by arranging the remote controller, so that the observation instrument can read without entering the installation position.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides a chemical industry control instrument convenient to multi-angle is observed which characterized in that includes:
the instrument comprises an instrument body, wherein an instrument panel is arranged on the instrument body and used for monitoring and controlling chemical operation, and characters or images displayed by the instrument panel are in a mode of mirroring the characters or images; and
the observation dish subassembly, the observation dish subassembly is including observing the dish disk body, it can swing the setting to observe the dish disk body and be in on the instrument body, observe the dish disk body orientation be provided with the speculum on one side of panel board, the speculum is used for the reflection the characters or the image that show on the panel board, it can swing angle of adjustment makes the user accessible to observe the speculum the characters or the image that show on the panel board.
2. The chemical industry control instrument that facilitates multi-angle viewing of claim 1, wherein the view tray assembly further comprises:
the mounting seat is rotatably arranged on the instrument body;
the observation tray body is arranged on the mounting seat and can rotate along with the mounting seat to change the angle of the reflecting mirror to reflect characters or images displayed on the instrument panel.
3. The chemical industry control instrument convenient to multi-angle is observed of claim 2, characterized in that, the observation dish body can swing and set up on the mount pad, the observation dish body can swing and change its and the angle size between the panel board.
4. The chemical industry control instrument convenient to multi-angle is observed of claim 3, characterized in that, the mount pad with observe the dish disk body and be connected through the pivot, be provided with first rotation motor on the mount pad, the output shaft of first rotation motor with the pivot is connected.
5. The chemical industry control instrument convenient to multi-angle is observed of claim 2, characterized in that, the mount pad outside is circular, the mount pad outside is provided with the ring gear, be provided with second rotating electrical machines and gear on the instrument body, the output shaft of second rotating electrical machines with gear connection, the gear with the ring gear cooperation transmission of mount pad outside.
6. The chemical control instrument convenient for multi-angle observation according to claim 5, characterized in that the instrument body is provided with a chute, the chute is circular, the mounting seat is arranged on the chute, a baffle is detachably arranged on the upper side of the chute, and the baffle is used for limiting and fixing the mounting seat on the chute.
7. The chemical control instrument convenient for multi-angle observation according to claim 1, wherein the instrument panel is rotatably disposed on the instrument body, and the instrument panel is rotatably adjusted to enable the reflecting mirror on the observation disk body to positively reflect characters or images on the instrument panel.
8. The chemical control instrument convenient for multi-angle observation according to claim 1, further comprising a control module, the control module is disposed on the instrument body, the control module is connected with the instrument panel, the control device is used for controlling the display mode of the instrument panel, the display mode of the instrument panel at least comprises forward display and mirror image display, wherein the mirror image display is a mode after characters or images are mirrored.
9. The chemical industry control instrument convenient to multi-angle is observed of claim 8, characterized in that, be provided with the display screen on the side of observing the dish body and deviating from the panel board, the display screen with control module is connected, control module is used for controlling the display screen shows.
10. The chemical industry control instrument convenient for multi-angle observation of claim 4 or 5, further comprising:
a remote controller for remotely controlling rotation of the first rotating motor or the second rotating motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011441293.9A CN112526703A (en) | 2020-12-08 | 2020-12-08 | Chemical industry control instrument convenient to multi-angle is observed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011441293.9A CN112526703A (en) | 2020-12-08 | 2020-12-08 | Chemical industry control instrument convenient to multi-angle is observed |
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| CN112526703A true CN112526703A (en) | 2021-03-19 |
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| CN202011441293.9A Pending CN112526703A (en) | 2020-12-08 | 2020-12-08 | Chemical industry control instrument convenient to multi-angle is observed |
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Citations (6)
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|---|---|---|---|---|
| CN102033317A (en) * | 2009-09-28 | 2011-04-27 | 斯坦雷电气株式会社 | Display device |
| CN106017596A (en) * | 2016-06-27 | 2016-10-12 | 苏州科博思流体科技有限公司 | Easy-to-read flange type flowmeter |
| CN208568004U (en) * | 2018-08-13 | 2019-03-01 | 泰州建源仪表有限公司 | It is a kind of can automatic lid closing/opening mechanical water meter |
| CN109489758A (en) * | 2018-12-28 | 2019-03-19 | 温岭甬岭水表有限公司 | A kind of water meter counter |
| CN110662008A (en) * | 2018-06-28 | 2020-01-07 | 广东虚拟现实科技有限公司 | Image display device and image display method |
| CN210603364U (en) * | 2019-11-15 | 2020-05-22 | 微电联合(湖北)科技有限公司 | Pointer instrument with gauge outfit protection device |
-
2020
- 2020-12-08 CN CN202011441293.9A patent/CN112526703A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033317A (en) * | 2009-09-28 | 2011-04-27 | 斯坦雷电气株式会社 | Display device |
| CN106017596A (en) * | 2016-06-27 | 2016-10-12 | 苏州科博思流体科技有限公司 | Easy-to-read flange type flowmeter |
| CN110662008A (en) * | 2018-06-28 | 2020-01-07 | 广东虚拟现实科技有限公司 | Image display device and image display method |
| CN208568004U (en) * | 2018-08-13 | 2019-03-01 | 泰州建源仪表有限公司 | It is a kind of can automatic lid closing/opening mechanical water meter |
| CN109489758A (en) * | 2018-12-28 | 2019-03-19 | 温岭甬岭水表有限公司 | A kind of water meter counter |
| CN210603364U (en) * | 2019-11-15 | 2020-05-22 | 微电联合(湖北)科技有限公司 | Pointer instrument with gauge outfit protection device |
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Application publication date: 20210319 |
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