CN211121483U - Upper end enclosure structure of capacitive liquid level sensor - Google Patents
Upper end enclosure structure of capacitive liquid level sensor Download PDFInfo
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- CN211121483U CN211121483U CN201922316176.9U CN201922316176U CN211121483U CN 211121483 U CN211121483 U CN 211121483U CN 201922316176 U CN201922316176 U CN 201922316176U CN 211121483 U CN211121483 U CN 211121483U
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Abstract
The utility model discloses a capacitanc level sensor's upper cover structure, including the ware body top, go up seal structure and connect airtight structure, the ware body top is cylinder stainless steel ware body top, goes up seal structure and corresponds threaded connection in the inside bottom of ware body top, goes up seal structure and corresponds and set up in the upper end opening part of ware body top, connects airtight structure and sets up in the outer arc wall bottom of ware body top, wherein: the capacitive liquid level sensor is simple in operation, convenient for installation of all parts, quick and tight connection of the end enclosure structure, and further sealing and sealing are airtight, so that the device body can be stably installed, quick liquid level monitoring is realized, and the use burden of personnel is reduced.
Description
Technical Field
The utility model relates to a liquid level monitoring equipment technical field specifically is a capacitanc level sensor's upper cover structure.
Background
The capacitance type liquid level sensor is a variable medium type capacitor which utilizes the capacitance change caused by the change of the measured medium surface, the capacitance type liquid level sensor has the advantages of large dynamic range, high response speed, small null shift, simple structure, strong adaptability and the like, the upper end enclosure structure of the capacitance type liquid level sensor is particularly important in the assembly and use process of the capacitance type liquid level sensor, but the upper end enclosure structure of the traditional capacitance type liquid level sensor has a plurality of defects, is complex to operate, is inconvenient for installing each part, cannot be quickly and tightly connected, cannot perform further sealing and sealing, cannot perform tight sealing treatment on the connection part deeply, cannot well guarantee the sealing requirement, cannot avoid the occurrence of liquid seepage, is not reasonable in structural design, greatly reduces the service life of equipment, cannot stably install a device body, and cannot realize rapid liquid level monitoring, the use burden of personnel is increased invisibly, so that the realization of the upper end enclosure structure of the capacitive liquid level sensor capable of solving the problems is imperative.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome current defect, provide a capacitanc level sensor's upper cover structure, easy operation, the installation of each part of being convenient for, head structure can be zonulae occludens fast to further seal inclosed, can realize quick liquid level monitoring to the firm installation of the ware body, alleviateed personnel's use burden, can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: an upper end enclosure structure of a capacitive liquid level sensor comprises a device body top, an upper seal structure, an upper seal closed structure and a connection closed structure;
The device body is pushed up: the device body top is a cylindrical stainless steel device body top;
An upper sealing structure: the upper sealing structure is correspondingly screwed at the inner bottom end of the top of the device body;
The upper sealing structure: the upper sealing structure is correspondingly arranged at the opening at the upper end of the top of the device body;
Connecting a closed structure: the connection sealing structure is arranged at the bottom end of the outer arc wall of the top of the device body;
Wherein: the sealing structure also comprises a wiring reserved cavity, a tubular outer electrode, insulating round blocks, an inner electrode and liquid permeating holes, wherein the wiring reserved cavity is arranged inside the upper sealing structure, the tubular outer electrode is arranged at the bottom end of the upper sealing structure, the insulating round blocks are symmetrically arranged at the upper end and the lower end inside the tubular outer electrode, the inner electrode is arranged on the upper wall surface of the insulating round block at the lower end, the inner electrode is positioned in the inner center of the tubular outer electrode, the inner electrode penetrates through the upper wall of the insulating round block at the upper end, the tubular outer electrode and the inner electrode both penetrate through the wall body of the upper sealing structure and extend to the inside of the wiring reserved cavity, the liquid permeating holes are uniformly arranged on the wall body of the tubular outer electrode, the operation is simple, the installation of each part is convenient, the sealing structure can be quickly and tightly connected, the sealing is further sealed, the tight sealing treatment is carried out, the service life of the device is prolonged, the device body can be stably installed, rapid liquid level monitoring is realized, and the use burden of personnel is lightened.
Further, the upper sealing structure comprises a butt joint ring block, a sealing rubber gasket, an insulating plastic threaded column and a butt joint block, the butt joint ring block is correspondingly arranged at the inner center of the top of the device body, the vertical tangent plane of the butt joint ring block is of a right trapezoid structure, the sealing rubber gasket is arranged on the inner side face of the butt joint ring block, the insulating plastic threaded column is in threaded connection with the inner bottom end of the top of the device body, the butt joint block is arranged in the middle of the upper end of the insulating plastic threaded column and corresponds to the butt joint ring block to be matched, a wiring reserved cavity is arranged in the middle of the insulating plastic threaded column, the tubular outer electrode and the tubular inner electrode all penetrate through the wall body of the insulating plastic threaded column and extend to the inside of the wiring reserved cavity, and.
Furthermore, the upper sealing and sealing structure comprises an upper sealing cover, an inserting column and a sealing rubber sleeve, wherein the upper sealing cover is correspondingly installed at an opening at the upper end of the top of the device body through a bolt, the inserting column is arranged at the center of the bottom surface of the upper sealing cover, the inserting column is correspondingly arranged with the inner cavity of the top of the device body, the sealing rubber sleeve is arranged on the outer arc wall of the inserting column, and the sealing rubber sleeve is contacted with the inner cavity wall of the top of the device body to realize the further sealing of the seal.
Furthermore, connect airtight structure including installation ring board, rubber pad, rubber ring and anticorrosive bolt, the installation ring board sets up in the outer arc wall bottom of ware body top, and the rubber pad corresponds sets up in the bottom surface inboard of installation ring board, and the wall body outside of installation ring board is equipped with even respective mounting hole, and the rubber ring sets up on the inner wall of installation ring board wall body mounting hole, and anticorrosive bolt sets up respectively in the mounting hole of installation ring board wall body, realizes closely installing fast to the ware body.
Further, still including defeated line passageway, defeated line passageway sets up respectively in the wall body middle part of insulating plastic screw thread post, butt joint piece, inserted post and upper seal cover, and the defeated line passageway of bottom communicates with each other with the wiring reservation chamber, and the leading-in of the wiring of being convenient for is derived.
The device further comprises an insulating separating ring plate and a reinforcing connecting piece, wherein the insulating separating ring plate is arranged in the middle of the wiring reserved cavity and is positioned at the interval between the tubular outer electrode and the tubular inner electrode, and the reinforcing connecting piece is symmetrically arranged at the upper end of the outer arc wall of the top of the device body, so that the insulating protection of the partition between the two electrodes is realized, and the device body is further reinforced and connected.
Compared with the prior art, the beneficial effects of the utility model are that: this capacitanc level sensor's upper cover structure has following benefit:
1. The connection wire of the tubular outer electrode and the tubular inner electrode penetrates out through the wire transmission channel in the middle of the wire connection reserved cavity, the insulating plastic threaded column and the butt joint block, then penetrates into and out of the wire transmission channel in the middle of the insertion column and the upper sealing cover, and then is connected with the external wiring terminal, the insulating plastic threaded column is in threaded connection with the inner bottom end of the top of the device body, the insulating plastic threaded column is in threaded propulsion into the inner cavity of the top of the device body until the butt joint block and the butt joint ring block are correspondingly matched, and the vertical section of the butt joint ring block is of a right trapezoid structure, so that the contact area is increased, the quick tight connection of the end socket structure is guaranteed under the tight action of the sealing rubber gasket on the inner side surface of the butt joint ring block, the tightness of the connection part is guaranteed, the occurrence of liquid seepage is avoided, the service life of equipment is.
2. And then the inserting column is inserted into the inner cavity of the top of the device body, the upper sealing cover is correspondingly arranged at the opening at the upper end of the top of the device body through a bolt, the inserting column is correspondingly arranged with the inner cavity of the top of the device body at the moment, and the quick and tight sealing connection of the upper sealing structure is realized under the action of the sealing rubber sleeve, so that the further sealing and sealing are realized, the tight sealing treatment is performed on the connection part more deeply, and the sealing requirement is met.
3. Then, a detection body consisting of a tubular outer electrode, an insulating round block, an inner electrode and a liquid permeation hole is penetrated into a mounting port of a detection container and extends into a solution to be detected, a rubber gasket is contacted with the mounting surface, a mounting ring plate is connected with the mounting surface of the container through an anticorrosive bolt, the rubber gasket and a rubber ring play a role in tightness of connection of a connecting part, so that a container body is quickly and tightly mounted, a reinforcing connecting piece is connected with the mounting surface through a bolt to realize further reinforcing connection and ensure the stable mounting of the container body, during measurement, a measurement solution is filled into a gap between the tubular outer electrode and the inner electrode through the liquid permeation hole, the capacitance of the solution at the gap is measured by the tubular outer electrode and the inner electrode, and the geometric size of the capacitance of the capacitor is changed or the property and the content of a medium are changed, when the liquid level rises, the total dielectric constant value, otherwise, when the liquid level is reduced, the information of the capacitance is timely presented to an external processor for integrated analysis, the liquid level is calculated and displayed, the rapid liquid level monitoring is realized, and the use burden of personnel is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
Fig. 2 is an enlarged schematic view of the a position of the present invention.
In the figure: 1 device top, 2 upper sealing structure, 21 butt ring block, 22 sealing rubber pad, 23 insulating plastic screw thread column, 24 butt block, 3 wiring reserved cavity, 4 tubular outer electrode, 5 insulating round block, 6 inner electrode, 7 liquid permeating hole, 8 upper sealing structure, 81 upper sealing cover, 82 plug column, 83 sealing rubber sleeve, 9 connecting sealing structure, 91 mounting ring plate, 92 rubber pad, 93 rubber ring, 94 corrosion-resistant bolt, 10 line conveying channel, 11 insulating separating ring plate, 12 reinforcing connecting piece.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: an upper end enclosure structure of a capacitance type liquid level sensor comprises a device body top head 1, an upper seal structure 2, an upper seal closed structure 8 and a connection closed structure 9;
The device body top 1: the device body top 1 is a cylindrical stainless steel device body top, and the device body top 1 provides an installation and support place;
And (3) an upper sealing structure 2: the upper sealing structure 2 is correspondingly screwed on the inner bottom end of the device top 1, the upper sealing structure 2 comprises a butt joint ring block 21, a sealing rubber gasket 22, an insulating plastic threaded column 23 and a butt joint block 24, the butt joint ring block 21 is correspondingly arranged at the inner center of the device top 1, the vertical tangent plane of the butt joint ring block 21 is of a right trapezoid structure, the sealing rubber gasket 22 is arranged on the inner side surface of the butt joint ring block 21, the insulating plastic threaded column 23 is screwed on the inner bottom end of the device top 1, the butt joint block 24 is arranged in the middle of the upper end of the insulating plastic threaded column 23 and is correspondingly matched with the butt joint ring block 21, the middle of the insulating plastic threaded column 23 is provided with a wiring reserved cavity 3, the tubular outer electrode 4 and the tubular inner electrode 6 both penetrate through the wall body of the insulating plastic threaded column 23 and extend to the inner part of the wiring reserved cavity 3, the insulating plastic threaded column 23 is screwed, the insulating plastic threaded column 23 is arranged in the inner cavity of the screw propeller body top 1 until the butt joint block 24 is correspondingly matched with the butt joint ring block 21, the vertical section of the butt joint ring block 21 is of a right-angled trapezoid structure, so that the contact area is increased, the quick and tight connection of the end socket structure is ensured under the tight action of the sealing rubber pad 22 on the inner side surface of the butt joint ring block 21, the tightness of the joint is ensured, the occurrence of liquid seepage is avoided, and the service life of equipment is prolonged;
Upper seal structure 8: the upper sealing structure 8 is correspondingly arranged at the upper end opening of the device body top head 1, the upper sealing structure 8 comprises an upper sealing cover 81, an inserting column 82 and a sealing rubber sleeve 83, the upper sealing cover 81 is correspondingly arranged at the upper end opening of the device body top head 1 through a bolt, the inserting column 82 is arranged at the center of the bottom surface of the upper sealing cover 81, the inserting column 82 is correspondingly arranged with the inner cavity of the device body top head 1, the sealing rubber sleeve 83 is arranged on the outer arc wall of the inserting column 82, the sealing rubber sleeve 83 is contacted with the inner cavity wall of the device body top head 1, the inserting column 82 is inserted into the inner cavity of the device body top head 1, the upper sealing cover 81 is correspondingly arranged at the upper end opening of the device body top head 1 through a bolt, the inserting column 82 is correspondingly arranged with the inner cavity of the device body top head 1 at the moment, under the action of the sealing rubber sleeve 83, the quick sealing connection of the upper sealing structure is realized, the further sealing and the sealing is realized, the sealing requirement is met;
Connecting the closed structure 9: the connection sealing structure 9 is arranged at the bottom end of the outer arc wall of the device body top 1, the connection sealing structure 9 comprises an installation circular ring plate 91, a rubber pad 92, a rubber ring 93 and an anti-corrosion bolt 94, the installation circular ring plate 91 is arranged at the bottom end of the outer arc wall of the device body top 1, the rubber pad 92 is correspondingly arranged on the inner side of the bottom surface of the installation circular ring plate 91, the outer side of the wall body of the installation circular ring plate 91 is provided with uniformly and respectively installation holes, the rubber ring 93 is arranged on the inner wall of the installation hole of the wall body of the installation circular ring plate 91, the anti-corrosion bolt 94 is respectively arranged in the installation hole of the wall body of the installation circular ring plate 91, the rubber pad 92 is in contact with the installation surface, the installation circular ring plate 91 is connected with the installation surface of the container through the anti-;
Wherein: the device also comprises a wiring reserved cavity 3, a tubular outer electrode 4, an insulating round block 5, an inner electrode 6 and a liquid permeation hole 7, wherein the wiring reserved cavity 3 ensures the butt joint of the wiring terminals of the inner electrode and the outer electrode, the tubular outer electrode 4 and the inner electrode 6 can measure the capacitance of solution at the gap, the liquid permeation hole 7 plays the role of filling and flowing of liquid to be measured, the insulating round block 5 plays the role of supporting and separating insulation between the two electrodes, the wiring reserved cavity 3 is arranged inside the upper sealing structure 2, the tubular outer electrode 4 is arranged at the bottom end of the upper sealing structure 2, the insulating round blocks 5 are symmetrically arranged at the upper end and the lower end of the inner electrode 4, the inner electrode 6 is arranged on the upper wall surface of the insulating round block 5 at the lower end, the inner electrode 6 is positioned at the inner center of the tubular outer electrode 4, the inner electrode 6 penetrates through the upper wall of the insulating round block 5 at the upper end, the tubular outer electrode, the liquid permeating holes 7 are uniformly arranged on the wall body of the tubular outer electrode 4.
Wherein: still include defeated line passageway 10, defeated line passageway 10 plays the defeated space of leading of wiring, defeated line passageway 10 sets up respectively in the wall body middle part of insulating plastic thread post 23, butt joint piece 24, inserted column 82 and upper seal cover 81, and defeated line passageway 10 of bottom communicates with each other with wiring reservation chamber 3.
Wherein: the device is characterized by further comprising an insulating separating ring plate 11 and a reinforcing connecting piece 12, wherein the insulating separating ring plate 11 is used for separating and insulating two-electrode structures, the reinforcing connecting piece 12 is connected with an installation surface through bolts, further reinforcing connection is achieved, other stable installation is guaranteed, the insulating separating ring plate 11 is arranged in the middle of the wiring reserved cavity 3 and is located at the interval between the tubular outer electrode 4 and the tubular inner electrode 6, and the reinforcing connecting piece 12 is symmetrically arranged at the upper end of the outer arc wall of the device body top head 1.
When in use: the connection wire of the tubular external electrode 4 and the tubular internal electrode 6 passes through the wire-connecting reserved cavity 3, the insulating plastic threaded column 23 and the wire-conveying channel 10 in the middle of the butt joint block 24, then passes through and passes through the wire-conveying channel 10 in the middle of the plug-in column 82 and the upper sealing cover 81, then is connected with the external terminal, the insulating plastic threaded column 23 is connected with the inner bottom end of the device body top head 1 in a threaded manner, the insulating plastic threaded column 23 is pushed into the inner cavity of the device body top head 1 in a threaded manner until the butt joint block 24 is correspondingly matched with the butt joint ring block 21, the vertical section of the butt joint ring block 21 is of a right-angled trapezoid structure, the contact area is increased, the sealing structure is ensured to be quickly and tightly connected under the tight action of the sealing rubber pad 22 on the inner side surface of the butt joint ring block 21, the sealing performance of the connection part is ensured, the occurrence of liquid seepage situation is avoided, the service life of, the upper sealing cover 81 is correspondingly arranged at the upper end opening of the device body top 1 through bolts, at the moment, the inserting column 82 is correspondingly arranged with the inner cavity of the device body top 1, under the action of the sealing rubber sleeve 83, the rapid tight sealing connection of the upper sealing structure is realized, the further sealing and sealing are realized, the tight sealing treatment is further deeply carried out on the connection part, the sealing requirement is met, then the detection body consisting of the tubular outer electrode 4, the insulating round block 5, the inner electrode 6 and the liquid permeation hole 7 is penetrated into the installation opening of the detection container and extends into the solution to be detected, the rubber pad 92 is contacted with the installation surface, the installation round ring plate 91 is connected with the installation surface of the container through the anti-corrosion bolt 94, the rubber pad 92 and the rubber ring 93 play a role in the tightness of the connection of the connecting part, so as to rapidly and tightly install the device body, the reinforcing connecting piece 12 is connected with the installation surface through the bolts, during measurement, a measurement solution is filled into a gap between the tubular outer electrode 4 and the tubular inner electrode 6 through the liquid permeable holes 7, the tubular outer electrode 4 and the tubular inner electrode 6 measure the capacitance of the solution in the gap, and by changing the geometric dimension of the capacitor or changing the property and the content of a medium, when the liquid level rises, the total dielectric constant value between the tubular outer electrode 4 and the tubular inner electrode 6 is increased, so that the capacitance is increased, otherwise, when the liquid level falls, the capacitance information is timely presented to an external processor for integration analysis, and the liquid level is calculated and displayed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a capacitive level sensor's upper cover structure which characterized in that: comprises a device body top (1), an upper seal structure (2), an upper seal closed structure (8) and a connection closed structure (9);
Body top (1): the device body top (1) is a cylindrical stainless steel device body top;
Upper seal structure (2): the upper sealing structure (2) is correspondingly screwed at the inner bottom end of the device body top (1);
Upper seal sealing structure (8): the upper sealing structure (8) is correspondingly arranged at the opening at the upper end of the device body top (1);
Connecting the sealing structure (9): the connection sealing structure (9) is arranged at the bottom end of the outer arc wall of the device body top head (1);
Wherein: still reserve chamber (3), tubular outer electrode (4), insulating circle piece (5), inner electrode (6) and pass through liquid hole (7) including the wiring, wiring is reserved chamber (3) and is set up in the inside of last sealing structure (2), tubular outer electrode (4) set up in the bottom of last sealing structure (2), insulating circle piece (5) symmetry sets up in the inside of tubular outer electrode (4) and goes up the lower extreme, inner electrode (6) set up on insulating circle piece (5) the wall of lower extreme, inner electrode (6) are located the inside center of tubular outer electrode (4), the upper wall of insulating circle piece (5) of upper end is run through in inner electrode (6), tubular outer electrode (4) and inner electrode (6) all run through the wall body of last sealing structure (2) and extend to the inside of wiring reservation chamber (3), pass through liquid hole (7) and evenly set up on the wall body of tubular outer electrode (4).
2. An upper head structure of a capacitive liquid level sensor according to claim 1, wherein: go up seal structure (2) including butt joint ring piece (21), sealed cushion (22), insulating plastic screw thread post (23) and butt joint piece (24), butt joint ring piece (21) correspond to set up in the inside center of ware body top (1), the vertical tangent plane of butt joint ring piece (21) is right trapezoid structure, sealed cushion (22) set up on the medial surface of butt joint ring piece (21), insulating plastic screw thread post (23) threaded connection is in the inside bottom of ware body top (1), butt joint piece (24) set up in the upper end middle part of insulating plastic screw thread post (23), and correspond with butt joint ring piece (21) and coincide the setting, the middle part of insulating plastic screw thread post (23) is equipped with wiring and reserves chamber (3), outer tubular electrode (4) and inner electrode (6) all run through the wall body of insulating plastic screw thread post (23) and extend to the inside of wiring and reserving chamber (3).
3. An upper head structure of a capacitive liquid level sensor according to claim 2, wherein: go up sealed enclosed construction (8) including upper cover (81), insert post (82) and sealed gum cover (83), upper cover (81) correspond through the bolt and install in the upper end opening part of the body top (1) of the ware, insert post (82) and set up in the bottom surface center of upper cover (81), insert post (82) and the inner chamber of the body top (1) of the ware corresponds the setting, sealed gum cover (83) set up on the outer arc wall of inserting post (82), sealed gum cover (83) and the inner chamber wall contact of the body top (1) of the ware.
4. An upper head structure of a capacitive liquid level sensor according to claim 1, wherein: connect airtight structure (9) including installation ring board (91), rubber pad (92), rubber ring (93) and anticorrosive bolt (94), installation ring board (91) set up in the outer arc wall bottom of ware body top (1), rubber pad (92) correspond to set up in the bottom surface inboard of installation ring board (91), the wall body outside of installation ring board (91) is equipped with even respective mounting hole, rubber ring (93) set up on the inner wall of installation ring board (91) wall body mounting hole, anticorrosive bolt (94) set up respectively in the mounting hole of installation ring board (91) wall body.
5. An upper head structure of a capacitive liquid level sensor according to claim 3, wherein: still include defeated line passageway (10), defeated line passageway (10) set up respectively in the wall body middle part of insulating plastic screw thread post (23), butt joint piece (24), inserted column (82) and upper seal cover (81), and defeated line passageway (10) of bottom communicates with each other with wiring reservation chamber (3).
6. An upper head structure of a capacitive liquid level sensor according to claim 1, wherein: the device is characterized by further comprising an insulating separating ring plate (11) and a reinforcing connecting piece (12), wherein the insulating separating ring plate (11) is arranged in the middle of the wiring reserved cavity (3) and is located at the interval between the tubular outer electrode (4) and the tubular inner electrode (6), and the reinforcing connecting piece (12) is symmetrically arranged at the upper end of the outer arc wall of the device body top head (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922316176.9U CN211121483U (en) | 2019-12-21 | 2019-12-21 | Upper end enclosure structure of capacitive liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922316176.9U CN211121483U (en) | 2019-12-21 | 2019-12-21 | Upper end enclosure structure of capacitive liquid level sensor |
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| CN211121483U true CN211121483U (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922316176.9U Active CN211121483U (en) | 2019-12-21 | 2019-12-21 | Upper end enclosure structure of capacitive liquid level sensor |
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| CN (1) | CN211121483U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091850A (en) * | 2021-03-25 | 2021-07-09 | 北京航天试验技术研究所 | Capacitance liquid level meter based on liquid container |
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2019
- 2019-12-21 CN CN201922316176.9U patent/CN211121483U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091850A (en) * | 2021-03-25 | 2021-07-09 | 北京航天试验技术研究所 | Capacitance liquid level meter based on liquid container |
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Effective date of registration: 20220112 Address after: 450000 No. K30, Zhengdong International Industrial Park, intersection of Fengqi road and Xiangda Road, Zhengzhou Economic and Technological Development Zone, Henan Province Patentee after: Henan Hotz Electronic Technology Co.,Ltd. Address before: 450000 no.402-3, floor 4, building 16, Zhengzhou Economic and Technological Development Zone, Henan Province Patentee before: HENAN FEIPUSITE INSTRUMENTS AND METERS CO.,LTD. |
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