CN110379585A - A kind of computerized information storage equipment degaussing gear can guarantee erasure effect - Google Patents
A kind of computerized information storage equipment degaussing gear can guarantee erasure effect Download PDFInfo
- Publication number
- CN110379585A CN110379585A CN201910717415.3A CN201910717415A CN110379585A CN 110379585 A CN110379585 A CN 110379585A CN 201910717415 A CN201910717415 A CN 201910717415A CN 110379585 A CN110379585 A CN 110379585A
- Authority
- CN
- China
- Prior art keywords
- permanent magnetism
- main casing
- swingle
- glidepath
- information storage
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/10—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member
- B02C4/12—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member in the form of a plate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
- H01F13/006—Methods and devices for demagnetising of magnetic bodies, e.g. workpieces, sheet material
Abstract
The invention discloses a kind of computerized informations that can guarantee erasure effect to store equipment degaussing gear, including main casing, end cap, motor and axle bumper plate, the right side opening of the main casing is equipped with discharge gate, the rear of the first glidepath is arranged in second glidepath, the interior welds of the main casing have mounting blocks, and the inside of mounting blocks is equipped with electromagnetic wand, the equal bolt of the left and right ends of the swingle is equipped with axle bumper plate, the lower inside bolt of the main casing is equipped with permanent magnetism chassis, and the upper surface on permanent magnetism chassis is provided with the second convex block.This can guarantee that the computerized information storage equipment of erasure effect is provided with electromagnetic wand with degaussing gear, during use, by to the coil input current inside electromagnetic wand, so that coil generates magnetic field, so that generating magnetic field at third inside main casing, the magnetic field is in side status simultaneously, results in the extremely disorder of device internal magnetic field, and then further increases the demagnetization performance of device.
Description
Technical field
The present invention relates to degaussing gear technical field, specially a kind of computerized information storage that can guarantee erasure effect is set
Spare degaussing gear.
Background technique
Degaussing gear is that the storage device-CD-ROM drive of a kind of pair of computer carries out a kind of equipment of demagnetization processing, with science and technology
Development, due to existing degaussing gear, its demagnetization method is single, results in present science and technology and has been able to after handling demagnetization
CD-ROM drive carry out the recoveries of data, the problem of so as to cause the leakage of CD driver data on file, while existing degaussing gear exists
During use or it there is a problem that certain；
Existing degaussing gear is all that unidirectional magnetic field carries out demagnetization in design and use, and the magnetic track of CD-ROM drive is caused to be united
One deviates in one direction, so that the magnetic track for greatly facilitating subsequent criminal restores, to cause letting out for CD-ROM drive data
Dew, causes the very poor problem of existing degaussing gear erasure effect, while existing degaussing gear is when in use, mostly will not
CD-ROM drive bulk is damaged, CD-ROM drive is restored to further facilitate subsequent criminal, causes CD driver
The problem of data is revealed.
In view of the above-mentioned problems, on the basis of original computerized information storage equipment degaussing gear that can guarantee erasure effect
Upper carry out innovative design.
Summary of the invention
The purpose of the present invention is to provide a kind of computerized informations that can guarantee erasure effect to store equipment degaussing gear,
To solve to propose that the poor and existing degaussing gear of erasure effect of degaussing gear does not have to CD-ROM drive sheet in above-mentioned background technique
The problem of body damages.
To achieve the above object, the invention provides the following technical scheme: a kind of computerized information that can guarantee erasure effect
Equipment degaussing gear, including main casing, end cap, motor and axle bumper plate are stored, the right side opening of the main casing is equipped with discharge gate,
And screw is equipped with sliding rail above the right side of main casing, and screw is equipped with the first downslide to the lower right-hand side of main casing respectively
The rear of the first glidepath, and the first glidepath and the second glidepath is arranged in rail and the second glidepath, second glidepath
Inner upper be provided with partition, and the inside of upper sliding rail is arranged in the upper end of partition, and the interior welds of the main casing have
Mounting blocks, and the inside of mounting blocks is equipped with electromagnetic wand, the upper surface bolt of the main casing is equipped with end cap, and the table of end cap
Face offers feed inlet, and heightening bracket is equipped in the middle part of end cap, and square bolt is equipped on the middle part of the heightening bracket
Motor, and the output end shaft coupling of motor is connected with main shaft, and main shaft runs through heightening bracket and end cap, the lower section of the main shaft
It is welded with swingle, and the left and right sides of swingle is cased with permanent magnetism sleeve, and to be provided with first convex on the surface of permanent magnetism sleeve
Block, the equal bolt of the left and right ends of the swingle are equipped with axle bumper plate, and the lower inside bolt of the main casing is equipped with forever
Magnetic chassis, and the upper surface on permanent magnetism chassis is provided with the second convex block.
Preferably, the arc length between first glidepath and the second glidepath is greater than the arc length of discharge gate, and discharge gate
Minimum point and permanent magnetism chassis upper surface flush with each other, and the arc length of discharge gate is less than the arc length of partition, while partition exists
Slide construction is constituted between upper sliding rail, the first glidepath and the second glidepath.
Preferably, the mounting blocks have 4 groups about the center line symmetrical setting of main casing, and the lower surface of mounting blocks with forever
The distance between magnetic chassis is greater than 5cm.
Preferably, the electromagnetic wand includes protection shell, coil and sealing cover, and coil is mounted on the interior of protection shell
Portion, and center line symmetrical setting of the electromagnetic wand about main casing, while electromagnetic wand is provided with 4, and protects the upper of shell
Square screw is equipped with sealing cover.
Preferably, feed inlet design in rectangular configuration, and center line symmetrical setting of the feed inlet about end cap.
Preferably, the center line of the main shaft and the center line of swingle are mutually perpendicular to, and the center line and end cap of main shaft
Center line overlap, and swingle constitutes rotary structure by main shaft.
Preferably, the swingle is provided with cross bar and hairbrush, and the middle part of cross bar welding swingle, and under cross bar
Side is provided with hairbrush, and is mutually perpendicular between cross bar and swingle, while the upper surface phase of the lower end of hairbrush and permanent magnetism chassis
Contact.
Preferably, the internal diameter of the permanent magnetism sleeve is greater than the outer diameter of swingle, and the surface of permanent magnetism sleeve is equally spaced and has
First convex block, and the outer diameter of permanent magnetism sleeve is equal to the diameter of axle bumper plate, while permanent magnetism sleeve is provided with 2.
Preferably, the upper surface on the permanent magnetism chassis, which is equally spaced, the second convex block, and the second convex block and the first convex block it
Between cross-distribution, and the outer surface of the upper surface on permanent magnetism chassis and permanent magnetism sleeve is synonyms pole.
Compared with prior art, the beneficial effects of the present invention are: this can guarantee that the computerized information storage of erasure effect is set
Spare degaussing gear；
1, it is provided with permanent magnetism sleeve and permanent magnetism chassis, during use, permanent magnetism sleeve passes through main shaft and swingle band
Dynamic rotation, so that the use of the first convex block and the second convex block is combined with, so that permanent magnetism sleeve and permanent magnetism chassis are effectively to CD-ROM drive
Carry out crushing operation, while again because permanent magnetism sleeve and permanent magnetism chassis are synonyms pole, during broken, the two just from
The upper and lower surfaces of CD-ROM drive are passed through, and then are effectively destroyed to the magnetic track on CD-ROM drive surface, so that demagnetization operation is carried out,
And the design of synonyms pole so that between magnetic field and magnetic field generate collision, increase demagnetization performance, while be combined with swingle,
The use of cross bar and hairbrush effectively overturns broken CD-ROM drive, so that CD-ROM drive is constantly in magnetic pole exchange process, from
And significantly increase demagnetization performance；
2, it is provided with electromagnetic wand, during use, by the coil input current inside electromagnetic wand, so that
Coil generates magnetic field, so that generating magnetic field at third inside main casing, while the magnetic field is in side status, results in dress
Internal magnetic field extremely disorder is set, and then further increases the demagnetization performance of device.
Detailed description of the invention
Fig. 1 is schematic view of the front view of the present invention；
Fig. 2 is that present invention master cuts open structural schematic diagram；
Fig. 3 is main casing overlooking structure diagram of the present invention；
Fig. 4 is swingle present invention looks up structural representation of the present invention；
Fig. 5 is swingle side structure schematic view of the present invention；
Fig. 6 is enlarged structure schematic diagram at A in Fig. 2 of the present invention；
Fig. 7 is electromagnetic wand schematic cross-sectional view of the present invention.
In figure: 1, main casing；2, discharge gate；3, upper sliding rail；4, the first glidepath；5, the second glidepath；6, partition；7, pacify
Fill block；8, electromagnetic wand；81, shell is protected；82, coil；83, sealing cover；9, end cap；10, feed inlet；11, heightening bracket；12,
Motor；13, main shaft；14, swingle；141, cross bar；142, hairbrush；15, permanent magnetism sleeve；16, the first convex block；17, axle bumper plate；
18, permanent magnetism chassis；19, the second convex block.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-7 is please referred to, the present invention provides a kind of technical solution: a kind of computerized information storage can guarantee erasure effect
Equipment degaussing gear, including main casing 1, discharge gate 2, upper sliding rail 3, the first glidepath 4, the second glidepath 5, partition 6, installation
Block 7, electromagnetic wand 8, end cap 9, feed inlet 10, heightening bracket 11, motor 12, main shaft 13, swingle 14, permanent magnetism sleeve 15, first
Convex block 16, axle bumper plate 17, permanent magnetism chassis 18 and the second convex block 19, the right side opening of main casing 1 are equipped with discharge gate 2, and main casing 1
Screw is equipped with sliding rail 3 above right side, and screw is equipped with the first glidepath 4 and the to the lower right-hand side of main casing 1 respectively
The rear of the first glidepath 4, and the inside of the first glidepath 4 and the second glidepath 5 is arranged in two glidepaths 5, the second glidepath 5
Top is provided with partition 6, and the inside of upper sliding rail 3 is arranged in the upper end of partition 6, and the interior welds of main casing 1 have mounting blocks
7, and the inside of mounting blocks 7 is equipped with electromagnetic wand 8, the upper surface bolt of main casing 1 is equipped with end cap 9, and the surface of end cap 9 is opened
Middle part equipped with feed inlet 10, and end cap 9 is equipped with heightening bracket 11, and square bolt is equipped with electricity on the middle part of heightening bracket 11
Machine 12, and the output end shaft coupling of motor 12 is connected with main shaft 13, and main shaft 13 runs through heightening bracket 11 and end cap 9, main shaft
13 lower section is welded with swingle 14, and the left and right sides of swingle 14 is cased with permanent magnetism sleeve 15, and permanent magnetism sleeve 15
Surface is provided with the first convex block 16, and the equal bolt of the left and right ends of swingle 14 is equipped with axle bumper plate 17, the interior subordinate of main casing 1
Square bolt is equipped with permanent magnetism chassis 18, and the upper surface on permanent magnetism chassis 18 is provided with the second convex block 19.
Arc length between first glidepath 4 and the second glidepath 5 is greater than the arc length of discharge gate 2, and the minimum point of discharge gate 2
With the upper surface flush with each other on permanent magnetism chassis 18, and the arc length of discharge gate 2 is less than the arc length of partition 6, while partition 6 is in upper cunning
Slide construction is constituted between rail 3, the first glidepath 4 and the second glidepath 5, the design of above structure is facilitated through discharge gate 2
The smashed CD-ROM drive of internal demagnetization is taken out, convenient for the use of device.
Mounting blocks 7 have 4 groups, and the lower surface of mounting blocks 7 and permanent magnetism chassis 18 about the center line symmetrical setting of main casing 1
The distance between be greater than 5cm, avoid CD-ROM drive from being blocked in inside device, it is ensured that the normal use of device.
Electromagnetic wand 8 includes protection shell 81, coil 82 and sealing cover 83, and coil 82 is mounted on the interior of protection shell 81
Portion, and center line symmetrical setting of the electromagnetic wand 8 about main casing 1, while electromagnetic wand 8 is provided with 4, and protects shell 81
Top screw sealing cover 83 is installed, using the design of electromagnetic wand 8, so that device can generate side direction during use
Magnetic field, in turn result in internal magnetic field disorder, thus further increase device demagnetization performance, improve the practicability of device.
The design in rectangular configuration of feed inlet 10, and center line symmetrical setting of the feed inlet 10 about end cap 9, convenient for CD-ROM drive
It is put into, guarantees the normal use of device.
The center line of main shaft 13 and the center line of swingle 14 are mutually perpendicular to, and in the center line of main shaft 13 and end cap 9
Heart line overlaps, and swingle 14 constitutes rotary structure, the design of above structure, it is ensured that subsequent rotation by main shaft 13
Bull stick 14 can drive permanent magnetism sleeve 15 to rotate, to crush to CD-ROM drive, it is ensured that the normal use of device.
Swingle 14 is provided with cross bar 141 and hairbrush 142, and cross bar 141 welds the middle part of swingle 14, and cross bar
141 lower section is provided with hairbrush 142, and is mutually perpendicular between cross bar 141 and swingle 14, at the same the lower end of hairbrush 142 with
The upper surface on permanent magnetism chassis 18 is in contact, and using the design of cross bar 141 and hairbrush 142, effectively carries out to smashed CD-ROM drive
Turn-over operation increases the demagnetization performance of device so that further increase CD-ROM drive is influenced by changes of magnetic field.
The internal diameter of permanent magnetism sleeve 15 is greater than the outer diameter of swingle 14, and the surface of permanent magnetism sleeve 15 be equally spaced have it is first convex
Block 16, and the outer diameter of permanent magnetism sleeve 15 is equal to the diameter of axle bumper plate 17, while permanent magnetism sleeve 15 is provided with 2, using first
The design of convex block 16 is combined with the use of the second convex block 19, is effectively crushed to CD-ROM drive, while the design of permanent magnetism material,
Magnetization demagnetization operation effectively is carried out to the magnetic track of CD-ROM drive, guarantees the normal use of device.
The upper surface on permanent magnetism chassis 18, which is equally spaced, the second convex block 19, and hands between the second convex block 19 and the first convex block 16
Fork distribution, and the upper surface on permanent magnetism chassis 18 and the outer surface of permanent magnetism sleeve 15 are synonyms pole, using setting for synonyms pole
Meter, so that CD-ROM drive is replaced between different magnetic field, to significantly increase the demagnetization performance of device.
Working principle: as shown in connection with fig. 1, device is placed into suitable position, then again by the power supply of device and power grid
It is attached, to begin to use.
When in use, as shown in Fig. 2, the inside that will imported into main casing 1 from discharge gate 2 to the CD-ROM drive of demagnetization, then beats
Open motor 12 and electromagnetic wand 8, open motor 12 it is electric after operated, drive main shaft 13 to be rotated by shaft coupling, such as scheme
Shown in 4-5, main shaft 13 will drive the rotation of swingle 14 during rotation, and rotation in the course of rotation, will drive outside
The 15 carry out activity of permanent magnetism sleeve, permanent magnetism sleeve 15 as shown in connection with fig. 6, is combined with the in the center line rotation around main shaft 13
The use of one convex block 16 and the second convex block 19 enables permanent magnetism sleeve 15 and permanent magnetism chassis 18 effectively to carry out broken work to CD-ROM drive
Industry, and the magnetic track on CD-ROM drive surface is effectively destroyed in the magnetic field that permanent magnetism sleeve 15 and permanent magnetism chassis 18 give out, to have
Effect carries out demagnetization operation to CD-ROM drive, while during use, as shown in fig. 7, the coil 82 inside electromagnetic wand 8 is being powered
After can generate magnetic field, thus further to CD-ROM drive carry out demagnetization operation as illustrated in figures 4-5, rotating during use
During bar 14 rotates, swingle 14 will drive cross bar 141 and hairbrush 142 and rotate around the center line of main shaft 13, thus effectively
The CD-ROM drive of 18 upper surface of permanent magnetism chassis is stirred, further increase crushing and erasure effect.
It, will be between 5 three of upper sliding rail 3, the first glidepath 4 and the second glidepath in conjunction with shown in Fig. 1-3 after demagnetization operation
Partition 6 slides into rear, and then discharge gate 2 is opened, to be taken out operation to internal material.
Here it is the working principles of the computerized information storage equipment degaussing gear that can guarantee erasure effect.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. it is a kind of can guarantee erasure effect computerized information storage equipment degaussing gear, including main casing (1), end cap (9),
Motor (12) and axle bumper plate (17), it is characterised in that: the right side opening of the main casing (1) is equipped with discharge gate (2), and main casing
(1) screw is equipped with sliding rail (3) above right side, and screw is equipped under first the lower right-hand side of main casing (1) respectively
Sliding rail (4) and the second glidepath (5), the second glidepath (5) setting is at the rear of the first glidepath (4), and first glides
The inner upper of rail (4) and the second glidepath (5) is provided with partition (6), and the upper end of partition (6) is arranged in upper sliding rail (3)
Inside, the interior welds of the main casing (1) have mounting blocks (7), and the inside of mounting blocks (7) is equipped with electromagnetic wand (8), institute
The upper surface bolt for stating main casing (1) is equipped with end cap (9), and the surface of end cap (9) offers feed inlet (10), and end cap
(9) it is equipped in the middle part of heightening bracket (11), square bolt is equipped with motor (12) on the middle part of the heightening bracket (11), and electricity
The output end shaft coupling of machine (12) is connected with main shaft (13), and main shaft (13) runs through heightening bracket (11) and end cap (9), described
It is welded with below main shaft (13) swingle (14), and the left and right sides of swingle (14) is cased with permanent magnetism sleeve (15), and
The surface of permanent magnetism sleeve (15) is provided with the first convex block (16), and the equal bolt of left and right ends of the swingle (14) is equipped with axis
The lower inside bolt of baffle (17), the main casing (1) is equipped with permanent magnetism chassis (18), and the upper surface of permanent magnetism chassis (18)
It is provided with the second convex block (19).
2. a kind of computerized information storage equipment degaussing gear that can guarantee erasure effect according to claim 1,
Be characterized in that: the arc length between first glidepath (4) and the second glidepath (5) is greater than the arc length of discharge gate (2), and discharge
The minimum point of mouth (2) and the upper surface flush with each other of permanent magnetism chassis (18), and the arc length of discharge gate (2) is less than partition (6)
Arc length, while partition (6) constitutes slide construction between upper sliding rail (3), the first glidepath (4) and the second glidepath (5).
3. a kind of computerized information storage equipment degaussing gear that can guarantee erasure effect according to claim 1,
Be characterized in that: the mounting blocks (7) have 4 groups, and the lower surface of mounting blocks (7) about the center line symmetrical setting of main casing (1)
The distance between permanent magnetism chassis (18) are greater than 5cm.
4. a kind of computerized information storage equipment degaussing gear that can guarantee erasure effect according to claim 1,
Be characterized in that: the electromagnetic wand (8) includes protection shell (81), coil (82) and sealing cover (83), and coil (82) is installed
In the inside of protection shell (81), and center line symmetrical setting of the electromagnetic wand (8) about main casing (1), while electromagnetic wand (8)
4 are provided with, and protects the top screw of shell (81) that sealing cover (83) are installed.
5. a kind of computerized information storage equipment degaussing gear that can guarantee erasure effect according to claim 1,
It is characterized in that: the feed inlet (10) design in rectangular configuration, and feed inlet (10) is symmetrically set about the center line of end cap (9)
It sets.
6. a kind of computerized information storage equipment degaussing gear that can guarantee erasure effect according to claim 1,
Be characterized in that: the center line of the center line and swingle (14) of the main shaft (13) is mutually perpendicular to, and the center line of main shaft (13)
It overlaps with the center line of end cap (9), and swingle (14) constitutes rotary structure by main shaft (13).
7. a kind of computerized information storage equipment degaussing gear that can guarantee erasure effect according to claim 1,
Be characterized in that: the swingle (14) is provided with cross bar (141) and hairbrush (142), and cross bar (141) welds swingle (14)
Middle part, and hairbrush (142) are provided with below cross bar (141), and mutually hang down between cross bar (141) and swingle (14)
Directly, while the lower end of hairbrush (142) is in contact with the upper surface of permanent magnetism chassis (18).
8. a kind of computerized information storage equipment degaussing gear that can guarantee erasure effect according to claim 1,
Be characterized in that: the internal diameter of the permanent magnetism sleeve (15) is greater than the outer diameter of swingle (14), and the surface of permanent magnetism sleeve (15) is equidistant
It is distributed with the first convex block (16), and the outer diameter of permanent magnetism sleeve (15) is equal to the diameter of axle bumper plate (17), while permanent magnetism sleeve
(15) 2 are provided with.
9. a kind of computerized information storage equipment degaussing gear that can guarantee erasure effect according to claim 1,
Be characterized in that: the upper surface of the permanent magnetism chassis (18) is equally spaced and has the second convex block (19), and the second convex block (19) and first
Cross-distribution between convex block (16), and the outer surface of the upper surface of permanent magnetism chassis (18) and permanent magnetism sleeve (15) is different name magnetic
Pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717415.3A CN110379585B (en) | 2019-08-05 | 2019-08-05 | Demagnetization device capable of guaranteeing demagnetization effect for computer information storage equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717415.3A CN110379585B (en) | 2019-08-05 | 2019-08-05 | Demagnetization device capable of guaranteeing demagnetization effect for computer information storage equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110379585A true CN110379585A (en) | 2019-10-25 |
| CN110379585B CN110379585B (en) | 2020-11-17 |
Family
ID=68258016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910717415.3A Active CN110379585B (en) | 2019-08-05 | 2019-08-05 | Demagnetization device capable of guaranteeing demagnetization effect for computer information storage equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110379585B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111389537A (en) * | 2020-03-20 | 2020-07-10 | 杭州根基科技有限公司 | Hard disk smashing device based on smashing speed automatic adjustment demagnetization speed |
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| CN111389537A (en) * | 2020-03-20 | 2020-07-10 | 杭州根基科技有限公司 | Hard disk smashing device based on smashing speed automatic adjustment demagnetization speed |
| CN111389537B (en) * | 2020-03-20 | 2021-08-10 | 杭州根基科技有限公司 | Hard disk smashing device based on smashing speed automatic adjustment demagnetization speed |
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| Publication number | Publication date |
|---|---|
| CN110379585B (en) | 2020-11-17 |
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