CN113131889B - Active power filter with auxiliary installation of air pressure adsorption - Google Patents

Active power filter with auxiliary installation of air pressure adsorption Download PDF

Info

Publication number
CN113131889B
CN113131889B CN202110237521.9A CN202110237521A CN113131889B CN 113131889 B CN113131889 B CN 113131889B CN 202110237521 A CN202110237521 A CN 202110237521A CN 113131889 B CN113131889 B CN 113131889B
Authority
CN
China
Prior art keywords
filter
magnetic
side wall
fixedly connected
mounting plate
Prior art date
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.)
Active
Application number
CN202110237521.9A
Other languages
Chinese (zh)
Other versions
CN113131889A (en
Inventor
周屿凌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Hongtu Junda Communication Technology Co ltd
Original Assignee
Shenzhen Hongtu Junda Communication Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Hongtu Junda Communication Technology Co ltd filed Critical Shenzhen Hongtu Junda Communication Technology Co ltd
Priority to CN202110237521.9A priority Critical patent/CN113131889B/en
Publication of CN113131889A publication Critical patent/CN113131889A/en
Application granted granted Critical
Publication of CN113131889B publication Critical patent/CN113131889B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H1/00Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H1/00Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
    • H03H2001/0021Constructional details
    • H03H2001/0057Constructional details comprising magnetic material
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/20Active power filtering [APF]

Landscapes

  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention discloses an active power filter with auxiliary installation by air pressure adsorption, which comprises a filter body, wherein the filter body comprises a shell and four pins arranged on the side wall of the shell, the lower side wall of the filter body is fixedly connected with an installation plate, and the lower side wall of the installation plate is provided with a plurality of suckers; the mounting plate is provided with a fixing mechanism for increasing the adsorption capacity of the suckers, the fixing mechanism comprises a fixing cavity arranged in the mounting plate, a plurality of suckers are communicated with the fixing cavity through connecting pipes, and the top of the fixing cavity is elastically connected with a movable plate through a plurality of pressure springs; two control cavities are arranged inside the mounting plate. The filter is only required to be adsorbed on the electric appliance in advance, other operations are not required, the installation steps are greatly simplified, convenience is brought to workers, meanwhile, the filter can be prevented from falling off, and the normal work of the filter is guaranteed.

Description

Active power filter with auxiliary installation of air pressure adsorption
Technical Field
The invention relates to the technical field of filters, in particular to an active power filter with auxiliary installation of air pressure adsorption.
Background
The filter is a filter circuit composed of a capacitor, an inductor and a resistor, and can effectively filter a frequency point of a specific frequency in a power line or frequencies except the frequency point to obtain a power signal of the specific frequency or eliminate the power signal after the specific frequency, and when the filter is used, the filter needs to be installed on a corresponding electrical appliance.
For some electrical appliances with stronger vibration during working, when the filter is installed, if the filter is simply placed on the electrical appliances, the filter is easy to fall off, if the filter is installed through tools such as bolts, on one hand, the electrical appliances need to be punched again, and other operations are complex, on the other hand, when the filter is fixed through the tools such as the bolts, the bolts can also loosen along with the strong vibration of the electrical appliances, and the fixing effect cannot meet the actual requirement, so that the active power filter with the auxiliary installation of air pressure adsorption is needed to be designed to solve the problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an active power filter with auxiliary installation of air pressure adsorption.
In order to achieve the purpose, the invention adopts the following technical scheme:
an active power filter installed in an auxiliary mode through air pressure adsorption comprises a filter body, wherein the filter body comprises a shell and four pins arranged on the side wall of the shell, the lower side wall of the filter body is fixedly connected with an installation plate, and a plurality of suckers are arranged on the lower side wall of the installation plate;
the mounting plate is provided with a fixing mechanism for increasing the adsorption capacity of the suckers, the fixing mechanism comprises a fixing cavity arranged in the mounting plate, a plurality of suckers are communicated with the fixing cavity through connecting pipes, and the top of the fixing cavity is elastically connected with a movable plate through a plurality of pressure springs;
two control cavities are arranged in the mounting plate, the inner walls of the two control cavities are both connected with a vibration block through two vibration springs, the lower side walls of the two vibration blocks are both fixedly connected with magnetic needles, and the inner walls of the two control cavities are both fixedly connected with wire frames;
two adjusting cavities are arranged in the mounting plate, electromagnetic blocks are fixedly connected to the tops of the two adjusting cavities, the two electromagnetic blocks are electrically connected with two wire frames respectively, metal sheets are connected to the inner walls of the two adjusting cavities in a sealing and sliding manner, connecting rods are fixedly connected to the lower ends of the two metal sheets, and the two connecting rods extend into the fixed cavity and are fixedly connected with the upper side wall of the movable plate;
the filter body is provided with an anti-falling mechanism for preventing the pins from falling off.
Preferably, the anti-falling mechanism comprises four annular air bags fixedly connected to the side walls of the four pins, the two annular air bags located on the same side are communicated through air ducts, and the two annular air bags located at the lower end are communicated with the fixed cavity through auxiliary pipes.
Preferably, the two adjusting cavities are filled with thermal expansion media, and the two thermal expansion media are respectively located at the lower ends of the two metal sheets.
Preferably, the two magnetic needles are both of a structure with a thick upper end and a thin lower end, and the two magnetic needles are respectively positioned right above the two wire frames.
Preferably, two the connecting rod runs through two regulation chamber bottoms respectively, two the connecting rod all is equipped with the sealing washer with the department of running through in two regulation chambers.
The invention has the following beneficial effects:
1. compared with the prior art, the invention is provided with the fixing mechanism, the vibration block is vibrated through the vibration of the electric appliance, so that the magnetic needle moves up and down, the lead frame cuts the magnetic induction line to generate induction current, the electromagnetic block is electrified to generate magnetism, the metal sheet is attracted to move upwards, and the moving plate is driven to move upwards, so that the pressure in the sucker can be reduced, and sufficient negative pressure is formed;
2. compared with the prior art, the temperature of the filter can also gradually rise along with the work of the filter, so that the thermal expansion medium is gradually heated and expanded, the metal sheet is further pushed to move upwards, the pressure difference between the inside of the sucker and the outside can be further increased, the sucker is enabled to be more tightly adsorbed, the fixing effect of the filter can be further ensured, and the filter is prevented from falling;
3. compared with the prior art, the anti-falling mechanism is arranged, when the moving plate moves upwards, the air in the fixed cavity can be extruded into the four annular air bags, so that the four annular air bags expand and tightly press the inner walls of the jacks of the corresponding electric appliances, the situation that the pins are separated from the jacks when the electric appliances vibrate can be prevented, and the normal operation of the filter is further ensured.
Drawings
Fig. 1 is a schematic structural diagram of an active power filter installed with the assistance of air pressure adsorption according to the present invention;
fig. 2 is an enlarged view of a structure a in fig. 1.
In the figure: the filter comprises a filter body 1, a mounting plate 2, a control cavity 3, a sucker 4, a connecting pipe 5, a fixing cavity 6, a moving plate 7, an adjusting cavity 8, a metal sheet 9, an electromagnetic block 10, an annular air bag 11, an auxiliary pipe 12, an air duct 13, a vibration block 14, a magnetic needle 15 and a lead frame 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but are not to be construed as limiting the present invention.
Referring to fig. 1-2, an active power filter installed with the assistance of air pressure adsorption comprises a filter body 1, wherein the filter body 1 comprises a housing and four pins arranged on the side wall of the housing, a mounting plate 2 is fixedly connected to the side wall of the filter body 1, and a plurality of suckers 4 are arranged on the side wall of the mounting plate 2.
The mounting plate 2 is provided with a fixing mechanism for increasing the adsorption capacity of the suckers 4, the fixing mechanism comprises a fixing cavity 6 arranged inside the mounting plate 2, the suckers 4 are all communicated with the fixing cavity 6 through connecting pipes 5, the top in the fixing cavity 6 is elastically connected with a movable plate 7 through a plurality of pressure springs, and the movable plate 7 is in sealing sliding connection with the inner wall of the fixing cavity 6;
the two control cavities 3 are arranged in the mounting plate 2, the inner walls of the two control cavities 3 are both connected with the vibrating block 14 through two vibrating springs, the lower side walls of the two vibrating blocks 14 are both fixedly connected with the magnetic needles 15, the inner walls of the two control cavities 3 are both fixedly connected with the wire frames 16, and the two magnetic needles 15 are both in a structure with thick upper ends and thin lower ends;
2 inside two regulation chambeies 8 that are equipped with of mounting panel, two are adjusted the equal fixedly connected with electromagnetism piece 10 in 8 interior tops in chamber, two electromagnetism pieces 10 respectively with two wire frames 16 electric connection, concrete connection mode is the wire connection, two are adjusted the equal sealing sliding connection in 8 inner walls in chamber and have sheetmetal 9, it has the thermal expansion medium all to fill in two regulation chambeies 8, the thermal expansion medium is heated easy expansion, can be mercury etc, two thermal expansion media are located two sheetmetal 9 lower extremes respectively, the equal fixedly connected with connecting rod of two sheetmetal 9 lower extremes, two connecting rods all extend to fixed cavity 6 in and with movable plate 7 side wall fixed connection, two connecting rods run through two regulation chamber 8 bottoms respectively, two connecting rods all are equipped with the sealing washer with two department of running through of adjusting chamber 8, prevent to adjust the thermal expansion medium in the chamber 8 and leak to fixed cavity 6 in.
The filter body 1 is provided with an anti-drop mechanism for preventing the pins from dropping, the anti-drop mechanism comprises four annular airbags 11 fixedly connected to the side walls of the four pins, two annular airbags 11 positioned at the same side are communicated through an air duct 13, and two annular airbags 11 positioned at the lower end are both communicated with the fixed cavity 6 through an auxiliary tube 12.
The invention can be illustrated by the following operating modes: when the filter is used, the filter is placed on the corresponding side wall of an electric appliance, the sucker 4 is pressed tightly, air in the sucker 4 is extruded out, the sucker 4 is tightly adsorbed on the side wall of the electric appliance, at the moment, a space at the lower end of the movable plate 7 in the fixed cavity 6, the connecting pipes 5 and the sucker 4 can form a closed space (hereinafter referred to as the closed space for convenience of description), and then four pins on the filter body 1 are inserted into corresponding jacks of the electric appliance.
When the filter is installed on some electrical appliances with stronger vibration, the two vibrating blocks 14 can also vibrate up and down along with the strong vibration generated when the electrical appliances work, so that the magnetic needle 15 is driven to move up and down, the magnetic force of each part of the magnetic needle 15 is different due to the difference in thickness of the two ends of the magnetic needle 15, so that the magnetic field strength of the lead frame 16 can also change when the magnetic needle 15 moves up and down, according to a formula phi = SB of the magnetic flux, wherein phi represents the magnetic flux, S represents the area, and B represents the magnetic field strength, therefore, the magnetic flux can be changed when the magnetic field strength changes, and further induction current can be generated in the lead frame 16, so that the two electromagnetic blocks 10 are electrified to generate magnetism, the metal sheet 9 can be attracted to move upwards, the moving plate 7 is driven to move upwards, the volume of the closed space can be increased, and the pressure intensity of the electrical appliances can be reduced due to the fact that the amount of air in the closed space is unchanged, according to the klahron equation PV = nRT, so that the air pressure intensity in the closed space can be tightly extruded on the side wall of the electrical appliances, and the filter can be prevented from falling down due to strong vibration.
Along with the long-time work of wave filter, the temperature on the wave filter body 1 also can rise gradually, and the heat transfer is to mounting panel 2 for the thermal expansion medium is also heated gradually and expands, can further promote sheetmetal 9 and move up, and then drives movable plate 7 and further shifts up, can further increase the volume in airtight space, thereby further increase airtight space and external pressure difference, makes the fixed more firm of wave filter.
When the movable plate 7 moves upwards, air in the fixed cavity 6 can be extruded into the annular air bags 11 at the two lower ends, and then the air in the two upper ends is extruded into the annular air bags 11 through the two air guide tubes 13, so that the four annular air bags 11 expand to tightly abut against the inner walls of the jacks of the electric appliances, the electric appliances are prevented from being strongly vibrated, the pins are separated from the jacks, the work of the filter is interrupted, and the normal use of the filter is ensured.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any equivalent replacement or change according to the technical solution and the inventive concept of the present invention should be covered within the scope of the present invention.

Claims (1)

1. The utility model provides an active power filter of supplementary installation of atmospheric pressure absorption, includes filter body (1), filter body (1) includes a shell and four of setting at the shell lateral wall participate in, side wall fixedly connected with mounting panel (2), its characterized in that under filter body (1): a plurality of suckers (4) are arranged on the lower side wall of the mounting plate (2);
the mounting plate (2) is provided with a fixing mechanism for increasing the adsorption capacity of the suckers (4), the fixing mechanism comprises a fixing cavity (6) arranged inside the mounting plate (2), a plurality of suckers (4) are communicated with the fixing cavity (6) through connecting pipes (5), and the top in the fixing cavity (6) is elastically connected with a movable plate (7) through a plurality of pressure springs;
two control cavities (3) are arranged in the mounting plate (2), the inner walls of the two control cavities (3) are both connected with a vibration block (14) through two vibration springs, the lower side walls of the two vibration blocks (14) are both fixedly connected with magnetic needles (15), and the inner walls of the two control cavities (3) are both fixedly connected with wire frames (16);
two adjusting cavities (8) are arranged in the mounting plate (2), electromagnetic blocks (10) are fixedly connected to the tops of the two adjusting cavities (8), the two electromagnetic blocks (10) are electrically connected with two lead frames (16) respectively, metal sheets (9) are connected to the inner walls of the two adjusting cavities (8) in a sealing and sliding mode, connecting rods are fixedly connected to the lower ends of the two metal sheets (9), and the two connecting rods extend into the fixed cavity (6) and are fixedly connected with the upper side wall of the movable plate (7);
the filter body (1) is provided with an anti-falling mechanism for preventing the pins from falling off;
the anti-falling mechanism comprises four annular air bags (11) fixedly connected to the side walls of the four pins, the two annular air bags (11) positioned on the same side are communicated through air guide tubes (13), and the two annular air bags (11) positioned on the lower end are communicated with the fixed cavity (6) through auxiliary tubes (12);
thermal expansion media are filled in the two adjusting cavities (8), and the two thermal expansion media are respectively positioned at the lower ends of the two metal sheets (9);
the two magnetic needles (15) are in a structure with thick upper ends and thin lower ends, and the two magnetic needles (15) are respectively positioned right above the two wire frames (16);
the two connecting rods respectively penetrate through the bottoms of the two adjusting cavities (8), and sealing rings are arranged at the penetrating positions of the two connecting rods and the two adjusting cavities (8);
when the filter is used, the filter is placed on the corresponding side wall of an electric appliance, the sucker 4 is pressed tightly, air in the sucker 4 is squeezed out, the sucker 4 is tightly adsorbed on the side wall of the electric appliance, at the moment, a space at the lower end of the movable plate 7 in the fixed cavity 6, the plurality of connecting pipes 5 and the sucker 4 can form a closed space, and then four pins on the filter body 1 are inserted into jacks of the corresponding electric appliance;
when the filter is installed on some electric appliances with stronger vibration, the two vibration blocks 14 can also vibrate up and down along with the strong vibration generated when the electric appliances work, so that the magnetic needle 15 is driven to move up and down, the magnetic force of each part of the magnetic needle 15 is also different due to the difference of the thicknesses of the two ends of the magnetic needle 15, and therefore, the magnetic field intensity of the lead frame 16 can also change when the magnetic needle 15 moves up and down, according to a formula phi = SB of the magnetic flux, wherein phi represents the magnetic flux, S represents the area, and B represents the magnetic field intensity, so that the magnetic flux can change when the magnetic field intensity changes, and further induction current can be generated in the lead frame 16, so that the two electromagnetic blocks 10 are electrified to generate magnetism, the metal sheets 9 can be attracted to move upwards, and the moving plate 7 is driven to move upwards, so that the volume of the closed space can be increased, and because the amount of air in the closed space is unchanged, the buber dragon equation PV = nRT can know that the volume increase can cause the pressure to be reduced, and therefore, the air pressure in the closed space can be reduced, so that enough negative pressure can be generated by pressing tightly on the side wall of the external electric appliances, and the filter can be prevented from dropping;
along with the long-time work of the filter, the temperature on the filter body 1 also gradually rises, and heat is transferred to the mounting plate 2, so that the thermal expansion medium is gradually heated and expanded, the metal sheet 9 can be further pushed to move upwards, the moving plate 7 is further driven to move upwards, the volume of the closed space can be further increased, the pressure difference between the closed space and the outside is further increased, and the filter is more firmly fixed; when the movable plate 7 moves upwards, air in the fixed cavity 6 can be extruded into the annular air bags 11 at the two lower ends, and then the air in the two upper ends is extruded into the annular air bags 11 through the two air guide tubes 13, so that the four annular air bags 11 expand to tightly abut against the inner walls of the jacks of the electric appliances, the electric appliances are prevented from being strongly vibrated, the pins are separated from the jacks, the work of the filter is interrupted, and the normal use of the filter is ensured.
CN202110237521.9A 2021-03-04 2021-03-04 Active power filter with auxiliary installation of air pressure adsorption Active CN113131889B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110237521.9A CN113131889B (en) 2021-03-04 2021-03-04 Active power filter with auxiliary installation of air pressure adsorption

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110237521.9A CN113131889B (en) 2021-03-04 2021-03-04 Active power filter with auxiliary installation of air pressure adsorption

Publications (2)

Publication Number Publication Date
CN113131889A CN113131889A (en) 2021-07-16
CN113131889B true CN113131889B (en) 2022-10-04

Family

ID=76772461

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110237521.9A Active CN113131889B (en) 2021-03-04 2021-03-04 Active power filter with auxiliary installation of air pressure adsorption

Country Status (1)

Country Link
CN (1) CN113131889B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114583423B (en) * 2022-04-11 2023-04-25 南昌理工学院 Signal filter for communication

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102364712A (en) * 2011-10-22 2012-02-29 中山伟强科技有限公司 Synthetic jet heat dissipation device
CN204428602U (en) * 2015-01-16 2015-07-01 肖艳 A kind of drainage tube of slip-off preventing
CN205029205U (en) * 2015-10-23 2016-02-10 昆明耀龙置信变压器制造有限公司 Electric power contact cabinet
CN108599164A (en) * 2018-05-15 2018-09-28 崔宗跃 A kind of Active Power Filter-APF of Pneumatic adsorption type installation
CN111301846A (en) * 2020-03-17 2020-06-19 刘同祥 Disposable lunch box with good heat preservation function
CN111342266A (en) * 2020-03-18 2020-06-26 徐文敏 A safe socket for big data cloud calculates laboratory computer lab
CN111712103A (en) * 2020-06-11 2020-09-25 深圳市雷凌广通技术研发有限公司 Vehicle-mounted power amplifier equipment based on Internet of things
CN111843559A (en) * 2020-09-08 2020-10-30 崔福才 Positioning tool for radially drilling inner gear ring
CN111888613A (en) * 2020-08-06 2020-11-06 吉林大学 ICU adult ward's nursing is with supplementary respiratory device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102364712A (en) * 2011-10-22 2012-02-29 中山伟强科技有限公司 Synthetic jet heat dissipation device
CN204428602U (en) * 2015-01-16 2015-07-01 肖艳 A kind of drainage tube of slip-off preventing
CN205029205U (en) * 2015-10-23 2016-02-10 昆明耀龙置信变压器制造有限公司 Electric power contact cabinet
CN108599164A (en) * 2018-05-15 2018-09-28 崔宗跃 A kind of Active Power Filter-APF of Pneumatic adsorption type installation
CN111301846A (en) * 2020-03-17 2020-06-19 刘同祥 Disposable lunch box with good heat preservation function
CN111342266A (en) * 2020-03-18 2020-06-26 徐文敏 A safe socket for big data cloud calculates laboratory computer lab
CN111712103A (en) * 2020-06-11 2020-09-25 深圳市雷凌广通技术研发有限公司 Vehicle-mounted power amplifier equipment based on Internet of things
CN111888613A (en) * 2020-08-06 2020-11-06 吉林大学 ICU adult ward's nursing is with supplementary respiratory device
CN111843559A (en) * 2020-09-08 2020-10-30 崔福才 Positioning tool for radially drilling inner gear ring

Also Published As

Publication number Publication date
CN113131889A (en) 2021-07-16

Similar Documents

Publication Publication Date Title
CN113131889B (en) Active power filter with auxiliary installation of air pressure adsorption
CN208879505U (en) A kind of stamping die
CN108165776B (en) Water immersion tank for rare earth processing
CN210610208U (en) Electromagnetic sealing box for large microwave resonant cavity
CN112145883A (en) Three-dimensional television installation device
CN212011665U (en) Electric power cabinet with dust removal mechanism
CN215757572U (en) Positioning assembly for metal mask plate frame
CN211829008U (en) Soft package lithium ion battery exhaust apparatus
CN213242389U (en) Temperature controller convenient to overhaul
CN211319946U (en) Polypropylene film capacitor
CN212928627U (en) Engine suspension capable of reducing abrasion
CN112796508A (en) Building steel formwork adaptive to high vibration load
CN207505141U (en) A kind of receiver
CN217860905U (en) Vacuum chuck positioning jig
CN219661562U (en) Industrial high vacuum cleaner
CN219132667U (en) Automatic partition board for autoclaved aerated concrete product mold frame
CN216346254U (en) Gas burner with air and gas automatic cutting-off function
CN213558341U (en) Filter equipment is used in putty powder production
CN220823506U (en) Self-locking type electric appliance box cover component
CN212362807U (en) Quick hot pressing furnace
CN217760937U (en) Electromagnetic induction heating mechanism convenient to install and detach at well head of oil and gas field
CN218399396U (en) Hot press device for plastic parts
CN115896957A (en) Semiconductor crystal bar arranging and forming machine
CN213586444U (en) PCB circuit board folding device
CN215490388U (en) High-pressure hot water temperature control device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20220914

Address after: 518000 Room 801, Building C, Block C, Datianyang Industrial Zone, Shiwei, Shiwei Community, Matian Street, Guangming District, Shenzhen, Guangdong, China

Applicant after: Shenzhen Hongtu Junda Communication Technology Co.,Ltd.

Address before: Zhejiang Huguang Transformer Co., Ltd., 89 Sutai Road, su'ao Industrial Zone, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province 325000

Applicant before: Zhou Yuling

TA01 Transfer of patent application right
GR01 Patent grant
GR01 Patent grant