CN108499913A - A kind of auto parts cleaning device - Google Patents
A kind of auto parts cleaning device Download PDFInfo
- Publication number
- CN108499913A CN108499913A CN201810277475.3A CN201810277475A CN108499913A CN 108499913 A CN108499913 A CN 108499913A CN 201810277475 A CN201810277475 A CN 201810277475A CN 108499913 A CN108499913 A CN 108499913A
- Authority
- CN
- China
- Prior art keywords
- cleaning
- hollow stem
- vertical bar
- hollow
- cleaning case
- 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
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 120
- 244000273618 Sphenoclea zeylanica Species 0.000 claims abstract description 45
- 238000005086 pumping Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 241001075561 Fioria Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000005406 washing Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- CBVWMGCJNPPAAR-HJWRWDBZSA-N (nz)-n-(5-methylheptan-3-ylidene)hydroxylamine Chemical compound CCC(C)C\C(CC)=N/O CBVWMGCJNPPAAR-HJWRWDBZSA-N 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 241000883990 Flabellum Species 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/0861—Cleaning crates, boxes or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/087—Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning In General (AREA)
Abstract
The present application relates to machinery manufacturing technology fields, disclose a kind of auto parts cleaning device, including cleaning case, cistern, drainpipe and cycle pumping machine, hollow stem is rotatably connected in cleaning case, hollow stem is fixedly connected with hollow fan blade, it is socketed with a cylindrical empty cylinder outside hollow stem, hollow stem is externally provided with helical blade, and hollow stem one end is connected with a reciprocator, push rod is connected on reciprocator, the end cooperation of push rod is equipped with vertical bar, and vertical bar is externally provided with bristle.Cleaning solution is constantly injected in cleaning case by cycle pumping machine, impact force makes helical blade drive hollow stem rotation, hollow stem drives reciprocator to move back and forth, final that vertical bar is driven to pump, and so that the bristle in vertical bar is adhered to cleaning solution and is cleaned to part to be cleaned.Structure of the invention is novel, solves the problems, such as that Parts Washing Equipment cleaning effect difference of the existing technology and cleaning efficiency are low.
Description
Technical field
The present invention relates to machinery manufacturing technology field more particularly to a kind of cleaning equipment for parts.
Background technology
With the raising of Chinese national economy level, people are increasing to the demand of automobile, the yield of automobile also by
Year increases, and auto parts are more, and in traditional auto industry, auto parts are in use for some time often on its surface
Adhere to one layer of grease, needs to disassemble auto parts and components at this time to clean.Currently, the cleaning to auto parts is mainly
By manually cleaning or ultrasonic equipment cleaning, but both modes all have some disadvantages, and vapour is cleaned by manually
It when vehicle parts, once cleans not all right, can be also cleaned multiple times sometimes, it is not only time-consuming, laborious, and also effect is bad;And surpass
Sound wave cleaning equipment buying expenses are expensive, and ultrasonic wave is used for a long time and is cleaned to part, can cause to damage to part itself
Wound, influences the service life of part, and for the dirtier auto parts and components of greasy dirt, cleaning performance is undesirable, cleaning effect
Rate is relatively low.
Invention content
It is clear to solve Parts Washing Equipment of the existing technology the invention is intended to provide a kind of auto parts cleaning device
The problem that clean effect is poor and cleaning efficiency is low.
In order to achieve the above objectives, basic scheme of the invention is as follows:A kind of auto parts cleaning device, including cleaning case,
Cistern and drainpipe, the cleaning case lower end are connected with the water inlet of cistern, the cistern water outlet and drainpipe
One end connection, the other end of the drainpipe is connected to the upper end of cleaning case, and the junction of the water storage box and drainpipe is set
There is a cycle pumping machine;
It is equipped with the pallet for placing part to be cleaned in the cleaning case, is rotatably connected in the cleaning case vertical
Hollow stem, the pallet top are equipped with several interconnected hollow fan blades, and the hollow fan blade is equipped with several openings, the sky
Heart flabellum is fixedly connected with hollow stem, is connected to inside the hollow fan blade and hollow stem, the hollow stem excircle is equipped with several
Helical blade, the hollow stem are socketed with cylindrical empty cylinder outside, and the cylindrical empty cylinder is fixedly connected in cleaning case, the circle
Cylindricality sky cylinder upper end is equipped with opening, and the opening is corresponding with the water outlet of drainpipe, and the hollow stem is close to cylindrical empty cylinder bottom
The body of rod at portion is equipped with several through-holes;
The one end of the hollow stem far from hollow fan blade is connected with a reciprocator, is set on the reciprocator
There is push rod, the end of the push rod is tapered end, and the vertical bar coordinated with push rod tapered end is slidably connected in the cleaning case,
The vertical bar is connected with tension spring close to one end of push rod and cleaning case upper wall, and the vertical bar excircle is equipped with several bristles,
The bristle offsets setting with cleaning chamber interior wall and part outer surface to be cleaned;Vertical bar lower end is connected with a link mechanism,
The link mechanism is equipped with several supporting blocks for being used to support pallet far from vertical bar one end.
The technical principle of this programme:Part to be cleaned is put into the pallet in cleaning box, cleaning solution is injected in cistern,
Cycle pumping machine injects cleaning solution in cleaning box by drainpipe, and cleaning solution impacts on the helical blade on hollow stem, spiral shell
Vane piece drives hollow stem to rotate, and hollow fan blade also rotates synchronously therewith, and cleaning solution is fallen into cylindrical empty cylinder, and from sky
Through-hole on the body of rod of core bar is flowed into hollow fan blade, under the influence of centrifugal force, opening of the cleaning solution from hollow fan blade
Outside splashes, a part of cleaning solution are attached on bristle, and a part of cleaning solution is attached to cleaning chamber interior wall, some
Cleaning solution is attached on cleaning ball;The rotation of hollow stem drives reciprocator to move back and forth, to make push rod
It moves back and forth, since one end of push rod and vertical bar is by wedge-like engagement, the reciprocating motion of push rod drives vertical bar up and down reciprocatingly
It moves, the bristle in vertical bar, which synchronizes, to pump, and scrub repeatedly, while vertical bar are carried out to part to be cleaned
Bristle matching purge liquid on the body of rod cleans the inner wall of cleaning case, and hollow stem constantly rotates, and the bristle in vertical bar is not
It is disconnected to be cleaned, realize the effect of high-efficiency cleaning.
The advantageous effect of this programme:1, the cleaning solution being discharged from drainpipe, impacts the helical blade on hollow stem, makes weight
Power potential energy is kinetic energy, drives hollow stem rotation.2, cleaning solution is fallen into cylindrical empty cylinder, and from the body of rod of hollow stem
Through-hole is flowed into hollow fan blade, and under the influence of centrifugal force, the outside splashes of opening of cleaning solution from hollow fan blade make
Cleaning solution is attached in bristle and cleaning case.3, it is equipped with bristle outside the body of rod of vertical bar, when vertical bar being made to move up and down, with zero
When the side of part is cleaned, the inner wall of cleaning case can also be cleaned.
Further, the reciprocator includes the tooth frame being slidably connected on cleaning case, the both sides of the tooth frame
It is provided with rack, the rack is engaged with half gear, and half gear and hollow stem are coaxially connected, and the push rod is set to tooth frame
Both sides.The rotation of hollow stem drives reciprocator to move back and forth, to make push rod move back and forth, due to push rod
One end with vertical bar is by wedge-like engagement, and the reciprocating motion of push rod drives vertical bar to pump, the brush in vertical bar
Hair, which synchronizes, to pump, and scrub repeatedly is carried out to part to be cleaned.
Further, the hollow stem is connected with cleaning ball close to one end of hollow fan blade, and the cleaning ball is clear against waiting for
Wash the upper surface of part.Cleaning effect is improved in the upper surface of cleaning ball part to be cleaned capable of washing.
Further, the link mechanism includes quarter butt and stock, and the quarter butt is connect with vertical bar, described stock one end
It is flexibly connected with quarter butt, the stock other end is free end, is hinged on cleaning case in the middle part of the stock, and the hinge joint will
Stock is divided into that length is two sections identical, and the supporting block is set to the free end of stock.
Further, the cleaning box is equipped with deflector with cistern junction.It is flowed from cleaning box bottom convenient for cleaning solution
Enter in cistern, then is drawn water by cycle pumping machine to recycling in cleaning box.
Further, the side wall of the cleaning box is transparent material.Convenient for the cleaning feelings in cleaning case in real time cleaning case
Condition.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of auto parts cleaning device of the present invention;
Fig. 2 is the structural schematic diagram of reciprocator in the present invention.
Specific implementation mode
Below by specific implementation mode, the present invention is described in further detail:
Reference numeral in Figure of description includes:It is cleaning case 1, cistern 2, cycle pumping machine 21, drainpipe 3, hollow
Bar 4, hollow fan blade 41, helical blade 42, cylindrical empty cylinder 43, cleaning ball 44, half gear 5, tooth frame 6, push rod 61, vertical bar 7,
Bristle 71, tension spring 72, pallet 8, part to be cleaned 81, link mechanism 9, supporting block 91.
Embodiment is basic as shown in attached drawing 1 to 2:A kind of auto parts cleaning device, including cleaning case 1, cistern 2 and
Drainpipe 3,1 lower end of cleaning case are connected with the water inlet of cistern 2, and 2 water outlet of cistern is connect with one end of drainpipe 3, row
The other end of water pipe 3 is connected to the upper end of cleaning case 1, and the junction of water storage box and drainpipe 3 is equipped with a cycle pumping machine 21;
It is equipped with the pallet 8 for placing part 81 to be cleaned in cleaning case 1, vertical sky is rotatably connected in cleaning case 1
Core bar 4,8 top of pallet are equipped with several interconnected hollow fan blades 41, and hollow fan blade 41 is equipped with several openings, hollow fan blade 41
It being fixedly connected with hollow stem, hollow fan blade 41 is connected to 4 inside of hollow stem, and 4 excircle of hollow stem is equipped with several helical blades 42,
It is socketed with cylindrical empty cylinder 43 outside hollow stem 4, cylindrical empty cylinder 43 is fixedly connected in cleaning case 1,43 upper end of cylindrical empty cylinder
Equipped with opening, opening is corresponding with the water outlet of drainpipe 3, and the body of rod of the hollow stem 4 at 43 bottom of cylindrical empty cylinder is equipped with
Several through-holes;
The one end of hollow stem 4 far from hollow fan blade 41 is connected with a reciprocator, and reciprocator is equipped with and pushes away
The end of bar 61, push rod 61 is tapered end, slidably connects the vertical bar 7 coordinated with 61 tapered end of push rod in cleaning case 1, vertically
Bar 7 is connected with tension spring 72 close to one end of push rod 61 and 1 upper wall of cleaning case, and 7 excircle of vertical bar is equipped with several bristles 71, bristle
71 offset setting with 1 inner wall of cleaning case and 81 outer surface of part to be cleaned;7 lower end of vertical bar is connected with a link mechanism 9, even
Linkage 9 is equipped with several supporting blocks 91 for being used to support pallet 8 far from 7 one end of vertical bar.
Specifically, reciprocator includes the tooth frame 6 being slidably connected on cleaning case 1, and the both sides of tooth frame 6 are provided with
Rack, rack are engaged with half gear 5, and half gear 5 and hollow stem 4 are coaxially connected, and push rod 61 is set to the both sides of tooth frame 6.Hollow stem 4
It is connected with cleaning ball 44 close to one end of hollow fan blade 41, cleaning ball 44 abuts the upper surface of part 81 to be cleaned.Link mechanism 9
Including quarter butt and stock, quarter butt is connect with vertical bar 7, and stock one end is flexibly connected with quarter butt, and the stock other end is free end, long
It is hinged on cleaning case 1 in the middle part of bar, stock is divided into that length is two sections identical by hinge joint, and supporting block 91 is set to the freedom of stock
End.Cleaning box is equipped with deflector with 2 junction of cistern.The side wall of cleaning box is transparent material.
This programme specific implementation mode:Part 81 to be cleaned is put into the pallet 8 in cleaning box, is injected in cistern 2
Cleaning solution, cycle pumping machine 21 inject cleaning solution in cleaning box by drainpipe 3, and cleaning solution impacts the spiral shell on hollow stem 4
On vane piece 42, helical blade 42 drives hollow stem 4 to rotate, and hollow fan blade 41 also rotates synchronously therewith, and cleaning solution is fallen into
In cylindrical empty cylinder 43, and it is flowed into hollow fan blade 41 from the through-hole on the body of rod of hollow stem 4, under the influence of centrifugal force,
The outside splashes of opening of cleaning solution from hollow fan blade 41, a part of cleaning solution are attached on bristle 71, part cleaning
Liquid is attached to 1 inner wall of cleaning case, some cleaning solution is attached on cleaning ball 44;The rotation of hollow stem 4 drives half gear 5
Rotation, half gear 5 drives the tooth frame 6 being engaged with to move back and forth, to drive push rod 61 to move back and forth, due to pushing away
One end of bar 61 and vertical bar 7 drives vertical bar 7 to pump by wedge-like engagement, the reciprocating motion of push rod 61, vertically
Bristle 71 on bar 7, which synchronizes, to pump, and scrub repeatedly, while 7 bar of vertical bar are carried out to part 81 to be cleaned
71 matching purge liquid of bristle on body cleans the inner wall of cleaning case 1, and hollow stem 4 constantly rotates, the bristle in vertical bar 7
71 are constantly cleaned, while cleaning ball 44 can continue to clean the upper surface of part 81 to be cleaned;In this process, pass through
The supporting block 91 that link mechanism 9 is connected with vertical bar 7 constantly pushes pallet 8, since pallet 8 is elastic material, is waited on pallet 8
Cleaning part 81 intermittent can be detached from pallet 8, so that cleaning solution is in direct contact with its bottom, whole device is finally to part to be cleaned
81 six faces are cleaned, and the effect of high-efficiency cleaning is realized.
Above-described is only the embodiment of the present invention, and the common sense such as well known specific technical solution were not made herein in scheme
More descriptions.It should be pointed out that for those skilled in the art, under the premise of not departing from present invention knot technical solution, also
Several modifications and improvements can be made, these should also be considered as protection scope of the present invention, these all do not interfere with of the invention real
The effect and patent practicability applied.The scope of protection required by this application should be based on the content of the claims, specification
In the records such as specific implementation mode can be used for explaining the content of claim.
Claims (6)
1. a kind of auto parts cleaning device, it is characterised in that:Including cleaning case, cistern and drainpipe, the cleaning case
Lower end is connected with the water inlet of cistern, the connection of one end of the cistern water outlet and drainpipe, the drainpipe it is another
End is connected to the upper end of cleaning case, and the junction of the water storage box and drainpipe is equipped with a cycle pumping machine;
It is equipped with the pallet for placing part to be cleaned in the cleaning case, is rotatably connected in the cleaning case vertical hollow
Bar, the pallet top are equipped with several interconnected hollow fan blades, and the hollow fan blade is equipped with several openings, the hollow fan
Leaf is fixedly connected with hollow stem, is connected to inside the hollow fan blade and hollow stem, the hollow stem excircle is equipped with several spirals
Blade, the hollow stem are socketed with cylindrical empty cylinder outside, and the cylindrical empty cylinder is fixedly connected in cleaning case, the cylinder
Empty cylinder upper end is equipped with opening, and the opening is corresponding with the water outlet of drainpipe, and the hollow stem is at cylindrical empty cylinder bottom
The body of rod be equipped with several through-holes;
The one end of the hollow stem far from hollow fan blade is connected with a reciprocator, and the reciprocator is equipped with and pushes away
The end of bar, the push rod is tapered end, and the vertical bar coordinated with push rod tapered end is slidably connected in the cleaning case, described
Vertical bar is connected with tension spring close to one end of push rod and cleaning case upper wall, and the vertical bar excircle is equipped with several bristles, described
Bristle offsets setting with cleaning chamber interior wall and part outer surface to be cleaned;Vertical bar lower end is connected with a link mechanism, described
Link mechanism is equipped with several supporting blocks for being used to support pallet far from vertical bar one end.
2. auto parts cleaning device according to claim 1, it is characterised in that:The reciprocator includes sliding
The both sides of the tooth frame being connected on cleaning case, the tooth frame are provided with rack, and the rack is engaged with half gear, half gear
Coaxially connected with hollow stem, the push rod is set to the both sides of tooth frame.
3. auto parts cleaning device according to claim 1, it is characterised in that:The hollow stem is close to hollow fan blade
One end is connected with cleaning ball, and the cleaning ball abuts the upper surface of part to be cleaned.
4. auto parts cleaning device according to claim 1, it is characterised in that:The link mechanism includes quarter butt and length
Bar, the quarter butt are connect with vertical bar, and described stock one end is flexibly connected with quarter butt, and the stock other end is free end, institute
It states and is hinged on cleaning case in the middle part of stock, stock is divided into that length is two sections identical, and the supporting block is set to length by the hinge joint
The free end of bar.
5. auto parts cleaning device according to claim 1, it is characterised in that:The cleaning box and cistern junction
Equipped with deflector.
6. auto parts cleaning device according to claim 1, it is characterised in that:The side wall of the cleaning box is transparent material
Matter.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810277475.3A CN108499913B (en) | 2018-03-30 | 2018-03-30 | Auto parts belt cleaning device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810277475.3A CN108499913B (en) | 2018-03-30 | 2018-03-30 | Auto parts belt cleaning device |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108499913A true CN108499913A (en) | 2018-09-07 |
CN108499913B CN108499913B (en) | 2020-08-25 |
Family
ID=63379418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201810277475.3A Active CN108499913B (en) | 2018-03-30 | 2018-03-30 | Auto parts belt cleaning device |
Country Status (1)
Country | Link |
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CN (1) | CN108499913B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112958534A (en) * | 2021-02-01 | 2021-06-15 | 诸暨市派特智能科技有限公司 | Computer accessory cleaning device |
CN113085706A (en) * | 2021-04-26 | 2021-07-09 | 浦盛石油集团有限公司 | Quick fuel feeding safety protection mechanism of tank truck |
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CN206588122U (en) * | 2017-03-02 | 2017-10-27 | 广州市安诺印刷材料有限公司 | A kind of chemical raw material barrel cleaning device |
CN107442014A (en) * | 2017-09-18 | 2017-12-08 | 张明克 | A kind of swing type stirred tank of stabilization |
CN107497769A (en) * | 2017-10-10 | 2017-12-22 | 长兴运达汽车配件有限公司 | A kind of auto parts cleaning equipment |
CN107774648A (en) * | 2017-12-18 | 2018-03-09 | 余金铭 | A kind of solar cell board cleaning device |
CN107824489A (en) * | 2017-10-31 | 2018-03-23 | 陈永 | A kind of cleaning device of casting box |
-
2018
- 2018-03-30 CN CN201810277475.3A patent/CN108499913B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20110005191A (en) * | 2009-07-09 | 2011-01-17 | 이부근 | Water an eraser revolve shape automatic a washer |
CN206588122U (en) * | 2017-03-02 | 2017-10-27 | 广州市安诺印刷材料有限公司 | A kind of chemical raw material barrel cleaning device |
CN107442014A (en) * | 2017-09-18 | 2017-12-08 | 张明克 | A kind of swing type stirred tank of stabilization |
CN107497769A (en) * | 2017-10-10 | 2017-12-22 | 长兴运达汽车配件有限公司 | A kind of auto parts cleaning equipment |
CN107824489A (en) * | 2017-10-31 | 2018-03-23 | 陈永 | A kind of cleaning device of casting box |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112958534A (en) * | 2021-02-01 | 2021-06-15 | 诸暨市派特智能科技有限公司 | Computer accessory cleaning device |
CN113085706A (en) * | 2021-04-26 | 2021-07-09 | 浦盛石油集团有限公司 | Quick fuel feeding safety protection mechanism of tank truck |
Also Published As
Publication number | Publication date |
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CN108499913B (en) | 2020-08-25 |
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