CN100354043C - Dedicated low temperature breaking equipment for printed circuit board - Google Patents
Dedicated low temperature breaking equipment for printed circuit board Download PDFInfo
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- CN100354043C CN100354043C CNB2005100852214A CN200510085221A CN100354043C CN 100354043 C CN100354043 C CN 100354043C CN B2005100852214 A CNB2005100852214 A CN B2005100852214A CN 200510085221 A CN200510085221 A CN 200510085221A CN 100354043 C CN100354043 C CN 100354043C
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- cavity
- circuit board
- printed circuit
- low temperature
- motor
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Abstract
The present invention relates to a dedicated low-temperature crushing device for a printed circuit board, which belongs to the technical field of machinery. The device comprises a feeding hopper, a crushing cavity, a material collecting cavity, a control box, a dust collecting box and a motor box, wherein the feeding hopper is arranged on the crushing cavity which is arranged on the material collecting cavity, and the three parts are mutually communicated; the control box, the dust collecting box and the motor box are arranged into a whole from the top to the bottom. A motor of the motor box is connected with a rotating shaft of the crushing cavity and connected with a control circuit in the control box. The interior of the crushing cavity is mainly composed of a sieve, a toothed plate and a fly wheel, wherein the place between the sieve and the toothed plate is ranged into an annular shape as a feeding passage. The sieve and the toothed plate are fixed by two steel rings forming a sieve bracket component which is sheathed outside the fly wheel. The present invention also comprises a liquid nitrogen inlet, and the liquid nitrogen inlet is connected with the bottom of the feeding hopper and communicated with the crushing cavity. The device can be used for a low-temperature grinding condition and has the advantages of high crushing efficiency, long service life of wearing parts, no environment pollution, etc.
Description
Technical field
The invention belongs to mechanical equipment technical field, particularly be used for the mill structure design of printed circuit board (PCB).
Background technology
Broken, pulverizing is the committed step of printed circuit board (PCB) recovery and utilization technology.For the physical mechanical method of more and more widely using, broken, pulverizing more occupies very important position.But the domestic pulverizer that the printed circuit board (PCB) special use is not arranged as yet all is to use the pulverizer of other industry to pulverize basically at present.Existing a kind of pulverizer that is used for printed circuit board (PCB) as shown in Figure 1, 2.This equipment is made up of feeding-passage 11, pulverizing cavity 12, the chamber 13 that gathers materials, control cabinet 14, disposal box 15, motor case 16, as shown in Figure 1, wherein, feeding-passage 11 is installed in the place ahead of pulverizing on the cavity 12 and being connected cavity, pulverize cavity 12 and be installed on the chamber 13 that gathers materials, and the three is interconnected; Control cabinet 14, disposal box 15, motor case 16 are placed from top to bottom and are combined into one, and the motor of motor case links to each other with the flywheel of pulverizing cavity, and motor links to each other with control circuit in the control cabinet.
Structure in the crushing chamber as shown in Figure 2, this crushing chamber inside mainly contains three parts: screen cloth 21, tooth plate 22, flywheel 23.Wherein six screen clothes and six tooth plates become the closed circular ring-type alternately and are fixed into the periphery that a rack assembly is sleeved on flywheel by two steel rings up and down, and can take out the pulverizer chamber.Flywheel is fixed in the crushing chamber with screw.
The course of work of this equipment is: material (being printed circuit board (PCB)) enters by the middle duct of feeding-passage from crushing chamber the place ahead, motor drives flywheel by control circuit control and runs up, 3 cutting edge actings in conjunction on 6 tooth plates of flywheel and rack assembly are pulverized material, material after the pulverizing falls into the chamber that gathers materials, and the dust that crushing process produces is collected by disposal box.
This equipment has the following disadvantages: though the rack assembly of one, closed circular ring-type can reasonablely prevent crushing phenomenon, but make the position of charging aperture can only be positioned at the crushing chamber front end like this, in case will clear up oversize, beginning to speak to influence charging in the door, they are two years old, though the rack assembly of closed circular ring-type is fixed by the silica gel circle of crushing chamber door inboard, but the rotation jumping phenomena is arranged at initial operating stage, so easy damage is attached to the silica gel circle of the inboard banding rack of chamber door, especially at cryogenic conditions, under the situation that silica gel fragility increases, easier damage.Three, only 3 cutting edges are arranged on each tooth plate, the drift angle angle of cutting edge tooth is 30 degree, and tooth depth is greater than 5 millimeters.Crush efficiency is not high, four, consumable accessory---and the material of main part of tooth plate cutting edge, screen cloth, flywheel is a stainless steel 304, and temperature was very high when flywheel ran up, the consumable accessory serious wear, the life-span is short, and makes printed circuit board (PCB) decomposite the harmful substance contaminated environment.
Summary of the invention
The objective of the invention is the problem that exists in the existing device course of work for overcoming, design a kind of disintegrating apparatus of printed circuit board (PCB) special use, this equipment can be used for the low-temperature grinding condition, has crush efficiency height, consumable accessory long service life, advantage such as free from environmental pollution.
A kind of dedicated low temperature breaking equipment for printed circuit board that the present invention proposes, this equipment comprises feed hopper, pulverizes cavity, the chamber that gathers materials, control cabinet, disposal box, motor case, and wherein, feed hopper is installed in to be pulverized on the cavity, pulverize cavity and be installed on the chamber that gathers materials, and the three is interconnected; Control cabinet, disposal box, motor case are provided with from top to bottom and are combined into one, and the motor of motor case links to each other with the rotating shaft of pulverizing cavity, and motor links to each other with control circuit in the control cabinet, and this crushing chamber inside mainly is made up of screen cloth, tooth plate, flywheel; It is characterized in that, described screen cloth and tooth plate become to bring into the circular of material passage alternately and are fixed into the periphery that a rack assembly is sleeved on flywheel by two steel rings up and down, also comprise a liquid nitrogen import, the bottom that this liquid nitrogen import is connected feed hopper communicates with the pulverizing cavity.
The interior structure and material of crushing chamber that the present invention is primarily aimed at existing pulverizer reasonably designs again, makes it reach following good technical effect:
The present invention can solve the mistake crushing phenomenon that occurs in the printed circuit board (PCB) crushing process, can carry out the cleaning of oversize easily simultaneously, and not influence charging and liquid nitrogen import;
The present invention can effectively reduce the wearing and tearing of consumable accessory, prolongs its service life.
The effective wear area of unit of the present invention increases, and can well improve crush efficiency.
Rack assembly of the present invention is equipped with stator, can make rack stable, reduces the loss that itself and peripheral structure act on each other.
The present invention can use liquid nitrogen, effectively reduces the heat that produces in the crushing process, reduces because the organic volatilization in printed circuit board (PCB) top that heats up and cause
Description of drawings
Fig. 1 is the structural representation of existing pulverizer.
Fig. 2 is the crushing chamber internal structure schematic diagram among Fig. 1.
Fig. 3 is a structural representation of the present invention.
Fig. 4 is the structural representation of crushing chamber of the present invention.
The specific embodiment
The dedicated low temperature breaking equipment for printed circuit board that the present invention proposes reaches embodiment in conjunction with the accompanying drawings and is described in detail as follows:
Dedicated low temperature breaking equipment for printed circuit board general structure of the present invention as shown in Figure 3, this equipment is made up of feed hopper 31, pulverizing cavity 32, the chamber 33 that gathers materials, control cabinet 34, disposal box 35, motor case 36, liquid nitrogen import 37, wherein, feed hopper 31 is installed in to be pulverized on the cavity 32, pulverize cavity 32 and be installed on the chamber 33 that gathers materials, and the three is interconnected; Control cabinet 34, disposal box 35, motor case 36 are placed from top to bottom and are combined into one, and the motor of motor case links to each other with the flywheel of pulverizing cavity, and motor links to each other with control circuit in the control cabinet.The bottom that liquid nitrogen import 37 is connected feed hopper 31 communicates with pulverizing cavity 32.
The internal structure embodiment of pulverizing cavity of the present invention as shown in Figure 4, this crushing chamber inside mainly contains three parts: screen cloth 41, tooth plate 42, flywheel 43.Wherein five screen clothes become circular alternately with six tooth plates and are fixed into the periphery that a rack assembly is sleeved on flywheel by two steel rings up and down, present embodiment is compared with existing device, the structure of 6 tooth plates before rack has kept has reduced the screen cloth of the top and has changed charging aperture 44 into.Two stators 45 of burn-oning simultaneously at two ends.
Consumable accessory of the present invention-tooth plate cutting edge, screen cloth, flywheel adopt Rockwell hardness to be higher than 55 high-abrasive material, adopt Cr12 or high-speed steel to make as present embodiment.And at the high hardness material wear-resistant coating of 5～10 microns of tooth plate edge surface sprayings as choosing ceramic coating, vacuum sintering Ni base alloy coat, tungsten carbide (WC) coating, Ti/TiN coating etc.
Tooth plate land mouth quantity of the present invention increases to about 5～10, and the drift angle angle of tooth is a 34-55 degree scope, specifically decides on the unit type size.The rack module diameter of present embodiment is 150mm, and tooth plate land mouth quantity is 6, and the drift angle angle of tooth is that the height of each tooth is about 3mm about 45 degree.
Claims (5)
1, a kind of dedicated low temperature breaking equipment for printed circuit board, this equipment comprises feed hopper, pulverizes cavity, the chamber that gathers materials, control cabinet, disposal box, motor case, and wherein, feed hopper is installed in to be pulverized on the cavity, pulverize cavity and be installed on the chamber that gathers materials, and the three is interconnected; Control cabinet, disposal box, motor case are provided with from top to bottom and are combined into one, and the motor of motor case links to each other with the rotating shaft of pulverizing cavity, and motor links to each other with control circuit in the control cabinet, and this crushing chamber inside mainly is made up of screen cloth, tooth plate, flywheel; It is characterized in that, described screen cloth and tooth plate become to bring into the circular of material passage alternately and are fixed into the periphery that a rack assembly is sleeved on flywheel by two steel rings up and down, also comprise a liquid nitrogen import, the bottom that this liquid nitrogen import is connected feed hopper communicates with the pulverizing cavity.
2, dedicated low temperature breaking equipment for printed circuit board according to claim 1 is characterized in that the feeding-passage two ends of said rack assembly are fixed with two stators.
3, dedicated low temperature breaking equipment for printed circuit board according to claim 1 is characterized in that, the cutting edge of said tooth plate, screen cloth, flywheel consumable accessory adopt Rockwell hardness more than or equal to 55 high-abrasive material.
4, dedicated low temperature breaking equipment for printed circuit board according to claim 1 is characterized in that the edge surface of said tooth plate is coated with 5～10 microns wear-resistant coating.
5 dedicated low temperature breaking equipment for printed circuit board according to claim 1 is characterized in that said tooth plate land mouth quantity is 5～10, and the drift angle angle of tooth is a 35-55 degree scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100852214A CN100354043C (en) | 2005-07-22 | 2005-07-22 | Dedicated low temperature breaking equipment for printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100852214A CN100354043C (en) | 2005-07-22 | 2005-07-22 | Dedicated low temperature breaking equipment for printed circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1701850A CN1701850A (en) | 2005-11-30 |
| CN100354043C true CN100354043C (en) | 2007-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100852214A Expired - Fee Related CN100354043C (en) | 2005-07-22 | 2005-07-22 | Dedicated low temperature breaking equipment for printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100354043C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103043B (en) * | 2010-11-29 | 2012-07-25 | 清华大学 | Sampling device of gaseous contaminant in material crushing process |
| CN107876180A (en) * | 2017-12-10 | 2018-04-06 | 无锡汇欧陶瓷有限公司 | A kind of efficient ceramic raw material reducing mechanism of small size |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3899139A (en) * | 1972-09-04 | 1975-08-12 | Osaka Gas Co Ltd | Crushing apparatus |
| CN2038813U (en) * | 1988-07-08 | 1989-06-07 | 郑凤林 | Hammer crusher |
| CN2231134Y (en) * | 1995-05-11 | 1996-07-17 | 刘振欧 | Tooth plate mill |
| CN2232315Y (en) * | 1995-06-29 | 1996-08-07 | 湖南省邵阳市粮油机械厂 | Grinding chamber on disintegrating mill |
| CN2347662Y (en) * | 1998-09-03 | 1999-11-10 | 舒贵勇 | Beater grinder |
| CN2657773Y (en) * | 2003-11-13 | 2004-11-24 | 罗新 | Material disintegrator |
| JP2005169246A (en) * | 2003-12-11 | 2005-06-30 | National Institute Of Advanced Industrial & Technology | Method of crushing composite material and apparatus therefor |
-
2005
- 2005-07-22 CN CNB2005100852214A patent/CN100354043C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3899139A (en) * | 1972-09-04 | 1975-08-12 | Osaka Gas Co Ltd | Crushing apparatus |
| CN2038813U (en) * | 1988-07-08 | 1989-06-07 | 郑凤林 | Hammer crusher |
| CN2231134Y (en) * | 1995-05-11 | 1996-07-17 | 刘振欧 | Tooth plate mill |
| CN2232315Y (en) * | 1995-06-29 | 1996-08-07 | 湖南省邵阳市粮油机械厂 | Grinding chamber on disintegrating mill |
| CN2347662Y (en) * | 1998-09-03 | 1999-11-10 | 舒贵勇 | Beater grinder |
| CN2657773Y (en) * | 2003-11-13 | 2004-11-24 | 罗新 | Material disintegrator |
| JP2005169246A (en) * | 2003-12-11 | 2005-06-30 | National Institute Of Advanced Industrial & Technology | Method of crushing composite material and apparatus therefor |
Non-Patent Citations (4)
| Title |
|---|
| 一种新型低温粉碎装置 黎长川.冷饮与速冻食品工业，第2期 1996 * |
| 低温破碎技术及其在资源回收中的应用 周翠红.北京石油化工学院学报，第13卷第1期 2005 * |
| 锤片式粉碎机的理论分析和结构改进措施探讨 朱新华，郭文川，阎晓利，田沛玉.西北农业大学学报，第27卷第1期 1999 * |
| 高压水除鳞喷嘴的分析 姜国辉，温济全，史国良.液压气动与密封，第79期 2000 * |
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| Publication number | Publication date |
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| CN1701850A (en) | 2005-11-30 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20071212 Termination date: 20170722 |