CN102886371A - Device and method for separating waste and old electronic wires - Google Patents
Device and method for separating waste and old electronic wires Download PDFInfo
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- CN102886371A CN102886371A CN2011102024990A CN201110202499A CN102886371A CN 102886371 A CN102886371 A CN 102886371A CN 2011102024990 A CN2011102024990 A CN 2011102024990A CN 201110202499 A CN201110202499 A CN 201110202499A CN 102886371 A CN102886371 A CN 102886371A
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- waste
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- electric line
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- screen drum
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Processing Of Solid Wastes (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention provides a device for separating waste and old electronic wires. The device comprises a cylinder, a heating part installed in the cylinder, a temperature controller electrically connected to the heating part and used for controlling the heating part to heat plastic coated on waste and old electronic wires to a melting temperature, a screen drum located in the cylinder and used for receiving waste and old electronic wires, and a power input part coupled with the screen drum and used for driving the screen drum to rotate. The invention also provides a method for separating waste and old electronic wires. The method comprises that through introduction of inert gas such as nitrogen, the device is in an oxygen-free environment; then waste and old electronic wires are heated so that plastic coatings of the waste and old electronic wires are in a viscous state; and through centrifugal movement, plastic and a metal of the waste and old electronic wires are separated. The device and the method can prevent release of toxic gas produced by plastic oxidation decomposition, and reduce equipment trouble and atmospheric pollution. Plastic separated by the device and the method is recyclable plastic.
Description
Technical field
The present invention relates to waste and old electric line processing technology field, particularly a kind of separator and method for the waste and old electric line.
Background technology
Electric wire is comprised of polyethylene or igelite coated metal copper core or aluminium core, for the waste and old electric line, is difficult to peel off by conventional method, adopt abandon, bury, the burning measure, not only waste resource, and contaminated environment.
For example Chinese patent application number is that 200910309829.9 patent namely discloses the method that above-mentioned burning mode reclaims, not only can not recycled plastic, cause the wasting of resources, and easy contaminated environment.
Common recovery for plastics and metal, number be that 89108645.5 patent also discloses a kind of technology by the solvent centrifugal separation such as Chinese patent application, by the plastic grain of the softening waste and old electric line external application of solvent soaking, under centrifugal separation technology, metal and plastics obtain effective separation, although this treatment process is dustless without noxious gas emission, can not cause environmental pollution, but the method separating rate is slow, cost consumption is larger, and the solvent that adopts has volatility, contaminated environment usually.
How rapidly the separating waste, worn electric wire carries out the common recovery of plastics and metal fast, is a problem demanding prompt solution.
Summary of the invention
For addressing the above problem, the invention provides a kind of separator for the waste and old electric line and method, with fast separating waste, worn electric wire, recycled plastic and metal.
A kind of separator for the waste and old electric line provided by the invention, this device comprises: cylinder; Heater block, it is inboard to be installed on described cylinder barrel; Temperature controller is electrically connected with described heater block, is used for controlling described heater block and is heated to the temperature that the waste and old electric line covers the plastics melting; Screen drum is positioned at described cylinder, is used for holding the waste and old electric line; Power input part is coupled with described screen drum, is used for driving described screen drum rotation.
By described waste and old electric line is heated, so that the plastic peel of described waste and old electric line presents viscous state, pass through afterwards centrifugal motion, thereby effectively separating waste, worn electric wire plastics and metal, prevent that the plastics oxidation Decomposition from discharging toxic gas, reduce device damage and atmosphere pollution, and isolated plastics are reproducible plastics, isolated metal is recycling.
Wherein, this separator also comprises control module, links to each other with described power input part and temperature controller, is used for controlling speed and the time that described power input part drives the screen drum rotation, and heating-up temperature and the time of control temperature controller control heater block.
By the heating-up temperature of control heater block and speed and the time of time and the rotation of power input part driving screen drum, thereby make waste and old electric line plastics be viscous state, and by centrifugal motion, fast and effeciently separating waste, worn electric wire plastics and metal.
Wherein, described cylinder comprises barrel, openable cover, the cylinder end; The barrel tip position of described cylinder has for the air inlet pipe of introducing inert gas, and the barrel bottom position has blast pipe.
By cylinder top cover to be opened/closed, be convenient to packing into and taking out of pending waste and old electric line, by air inlet pipe and the blast pipe of cylinder, can import the inert gas such as nitrogen and discharge waste gas in the cylinder.
Wherein, the downward-sloping setting of mind-set cylinder feather edge in the edge at the bottom of the described cylinder cylinder; Cylinder feather edge place arranges a discharging opening.
By making bottom of cylinder that certain inclination angle be arranged, thereby form the discharging opening of inclination, be convenient to the viscous state plastics and conflux and discharge this separator.
Wherein, described heater block is infrared heating pipe.
Utilize infrared heating pipe to heat, because ultrared heat effect is strong, penetration capacity is strong, programming rate is fast, infrared heating is in a liquid state electric wire integument fast softening, has avoided thus the plastics oxidation Decomposition to discharge toxic gas, reduces device damage and atmosphere pollution.
Wherein, described heater block is the electromagnetic type heater block, comprising: solenoid, with coaxial being arranged on the described cylinder inner wall of cylinder;
The power supply control parts are connected with solenoid, are used for driving solenoid and generate an electromagnetic field.
By the electromagnetic type heater block waste and old electric line is heated, screen drum rotates so that scrap electrical wires moves in this electromagnetic field, thereby so that the generation of the metal in scrap electrical wires heat heats the plastics on it, has improved the thermal efficiency.
Wherein, the outside of described cylinder is covered with heat-insulation layer and/or described cylinder internal layer is coated with nickel-carbon composite coating.
By covering heat-insulation layer in the cylinder outside, prevent the heat loss in the cylinder, kept the needed treatment temperature of separator, avoided in addition operating personnel's scald dangerous.Plate high temperature resistant high self lubricity coating (nickel-carbon composite coating) at cylinder inner wall, thereby make the cylinder inner wall surface have not stickiness, and surface energy is very low, thereby prevent that the centrifugal viscous state plastics that throw away from adhering on the cylinder inner wall.
The present invention also provides a kind of separation method for the waste and old electric line, comprising:
A, the waste and old electric line is heated, make described waste and old electric plastics that line covers reach molten condition;
B, by centrifugal motion, plastics are covered in the institute of described waste and old electric line separate with metal.
By described waste and old electric line is heated, so that the plastic peel of described waste and old electric line presents viscous state, pass through afterwards centrifugal motion, thereby effectively separating waste, worn electric wire plastics and metal, prevent that the plastics oxidation Decomposition from discharging toxic gas, reduce device damage and atmosphere pollution, and isolated plastics are reproducible plastics, isolated metal is recycling.
Wherein, also comprise before the steps A: by importing inert gas the waste and old electric line is remained under anaerobic or the low-oxygen environment.
By importing nitrogen or inert gas, treating apparatus is under anaerobic or the low-oxygen environment, then described waste and old electric line is heated, so that the plastic peel of described waste and old electric line presents viscous state, pass through afterwards centrifugal motion, thereby separating waste, worn electric wire plastics and metal prevent that the plastics oxidation Decomposition from discharging toxic gas, reduces device damage and atmosphere pollution effectively.
Wherein, described heating is to use the infrared heating mode.Utilize infrared heating pipe to heat, because ultrared heat effect is strong, penetration capacity is strong, programming rate is fast, infrared heating is in a liquid state electric wire integument fast softening, has avoided thus the plastics oxidation Decomposition to discharge toxic gas, reduces device damage and atmosphere pollution.
Wherein, the temperature range that this waste and old electric line is heated is 160-180 ℃.Described waste and old electric line heated make the plastic peel of described waste and old electric line present viscous state, pass through afterwards centrifugal motion, thereby separating waste, worn electric wire plastics and metal prevent that the plastics oxidation Decomposition from discharging toxic gas, reduces device damage and atmosphere pollution effectively.
Description of drawings
The structural representation of a kind of separator for the waste and old electric line that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is the top view of separator shown in Figure 1;
The schematic flow sheet of a kind of separation method for the waste and old electric line that Fig. 3 provides for the embodiment of the invention.
The specific embodiment
The embodiment of the invention provides a kind of separator for the waste and old electric line and method.Its cardinal principle is: at first the control module of this separator heats the pending waste and old electric line that is contained in the screen drum by coupled temperature controller control heating tube, until the plastic peel of waste and old electric line presents the molten state of viscosity flow, then the control module of this separator is by the power input part of coupled screen drum, screen drum High Rotation Speed in the control cylinder, the plastic peel that will present the waste and old electric line of viscous state separates with metal.
Below in conjunction with accompanying drawing, the embodiment of the invention is described in detail.Referring to Fig. 1 and Fig. 2, a kind of separator for the waste and old electric line that the embodiment of the invention provides comprises: side shrouding 1, cylinder 2, screen drum 3, blast pipe 4, discharging opening 5, air inlet pipe 6, heating tube 7, rolling bearing 8, equipment supporter platform 9, belt pulley 10, belt 11, motor 12, temperature controller 13 and control module 14.
It is that 1.5mm, inside radius are the iron and steel cylinder of 475mm that cylinder 2 can be thickness, and the outer wall of cylinder 2 is covered with heat-insulation layer 21, and the inwall of cylinder 2 is coated with high temperature resistant high self lubricity coating, such as nickel-carbon composite coating.Have coaxial screen drum 3 in the cylinder 2, being used for holding need waste and old electric line to be processed.
The material of heat-insulation layer 21 can be selected the thick aluminosilicate fiberboard of 5mm, and the heat-preserving range of aluminosilicate fiberboard can reach more than 500 ℃.It is better and have waterproof, a clad aluminium of flammable characteristic not to select in addition to be incubated heat-insulating property.Can be wrapped in according to size the outside of cylinder after the heat-insulation layer bending, play the adiabatic effect of insulation.Cylinder 2 can support heat-insulation layer 21, and heat-insulation layer 21 can prevent the heat loss of cylinder 2, keeps needed treatment temperature.
Have air inlet pipe 6 on the barrel at the close top of cylinder 2, it is near having blast pipe 4 on barrel of bottom, by air inlet pipe 6, imports the inert gases such as nitrogen in the described cylinder, makes it become anaerobic or low-oxygen environment.When preventing from heating the waste and old electric line, the oxygen in the cylinder 2 and the metal generation oxidation reaction of waste and old electric line behind the plastic peel that has separated electric wire and metal, by blast pipe 4, are got rid of the inert gases such as nitrogen.Can have intake valve on the air inlet pipe 6, have air bleeding valve on the blast pipe 4, air inlet pipe 6 can connect outside nitrogen pot, and blast pipe connects cloth bag collector and filtration of alkaline solution device, is used for dedusting, absorption impurity and absorbs chlorine contained exhaust gas.
Described cylinder top has the cover of resistant to elevated temperatures sealing ring to be opened/closed, has buckle structure between described cover and cylinder.By this buckle structure, can realize the open and close function of door, by this cover, can be with pending waste and old electric traditional thread bindingly enter and take out, can stop in addition the leakage of waste gas by sealing ring.One position of the close barrel of bottom of cylinder also has the discharging opening 5 under being tilted to, better, as shown in the figure, the therefrom at an angle downward-sloping setting of mind-set circumference of cylinder 2 bottoms, and discharging opening 5 places further are lower than other positions, cylinder 2 bottoms (not shown), are convenient to the plastics of viscous state by the discharging opening 5 of this inclination, conflux and discharge this separator, because cylinder 2 has adopted upright mode, the plastics that produce in the at any time collection and treatment process.In addition, it is better that cylinder 2 bottoms and barrel junction fillet arrange (not shown).
In this example, with fine and closely woven sieve aperture, it is that 1.5mm, outer radius are 360mm that screen drum 3 can be thickness on the barrel of screen drum 3, and sieve diameter is that the equidistant 10mm in 3mm, center, hole arranges.Radius data according to sieve aperture on the screen drum 3 can calculate, and the waste and old electric line length is fit to scope will be at least greater than 3mm.Embedding rolling bearing 8 outside in the middle of the bottom of screen drum 3, the rotary speed of rolling bearing 8 (being screen drum) can reach 300 rev/mins, and the power input part of screen drum 3 is motor-driven structure, and this motor-driven structure comprises motor 12, belt 11 and belt pulley 10.By belt 11 and belt pulley 10, motor 12 drives rolling bearing 8 rotations of screen drum 3, in addition, can pass through the rotary speed of the Frequency Converter Control screen drum of motor.
Can link together cylinder 2, screen drum 3, heating tube 7 and motor 12 by equipment supporter platform 9, consist of the complete treatment facility of a cover.By control module 14 control motors 12, motor 12 drives belts 11, thereby interlock screen drum 3, waste and old electric line rotate together, and the speed of rotation can adapt to by the frequency converter adjusting rotary speed of motor different types of waste and old electric line and components and parts, when screen drum has just started, rotating speed is lower, so that then waste and old electric line homogeneous heating progressively accelerates, after reaching the rotating speed of setting, maintain this speed and heat and centrifugation, after the melting plastics all throw away screen drum, but retarding braking.
The specific works process of this separator is as follows:
Waste and old power line, data wire, winding displacement etc. are put into screen cloth 3 by the cover of cylinder 2, electric wire can be divided evenly, by buckle, the cover of cylinder 2 closed block.
By the air inlet pipe 6 at cylinder 2 tops, the inert gases such as nitrogen injection or argon gas in the separator are got rid of the air in the cylinder 2, and electric wire is under the anaerobic state of sealing.
The power input part of control module 14 control infrared heating pipe 7 and screen drum 3 makes 3 low speed rotation of sieve, sees through sieve aperture through the high temperature nitrogen after infrared heating pipe 7 heating, makes the electric wire thermally equivalent.
Then, the power input part of control module 14 control infrared heating pipe 7 and screen drum 3, the rotary speed that improves heating-up temperature and improve screen drum 3 is rapidly heated between 160-180 ℃ temperature, electric wire through preheating enters rapidly melting process, and temperature is controlled at 160 ℃.The softening viscous state that is of plastics.The plastics of viscous state are in the screen drum 3 of keeping High Rotation Speed, and under the effect of centrifugal force, the complete layering of the plastics of viscous state and metal throws away screen drum 3 by sieve aperture, realized that the efficient of plastics and metal separates fast.
The rotary speed of screen drum 3 reduces, until stop, the plastic warp of the viscous state that throws away is crossed the discharging opening of inclination and collected, processing by pressing buckle, is opened the cover of cylinder 2 after finishing, with scoop the metal that separates is taken out, thereby obtained comparatively pure plastics and raw metal.
By inert gases such as importing nitrogen, treating apparatus is under anaerobic or the low-oxygen environment, then described waste and old electric line is heated, so that the plastic peel of described waste and old electric line presents viscous state, afterwards by centrifugal motion, separating waste, worn electric wire plastics and metal, prevent that the plastics oxidation Decomposition from discharging toxic gas, reduce device damage and atmosphere pollution, and isolated box plastics are reproducible plastics, isolated metal is recycling.
The embodiment of the invention also provides a kind of separation method for the waste and old electric line.Referring to Fig. 3, the method comprises
Step 300: enter in the separator waste and old electric is traditional thread binding, and import the inert gas such as nitrogen to this separator;
Step 310: described waste and old electric line is heated, so that the plastic peel of described waste and old electric line presents viscous state;
Step 320: by centrifugal motion, described waste and old electric line plastics are separated with metal.
Can carry out infrared heating to this waste and old electric line.The temperature range that this waste and old electric line is heated is 160-180 ℃.
The method that present embodiment provides is corresponding with the said apparatus of present embodiment, can implement the method among the above-mentioned either method embodiment on the device that the embodiment of the invention provides, and its specific implementation process sees device embodiment for details, repeats no more here.
By inert gases such as importing nitrogen, treating apparatus is under anaerobic or the low-oxygen environment, then described waste and old electric line is heated, so that the plastic peel of described waste and old electric line presents viscous state, afterwards by centrifugal motion, separating waste, worn electric wire plastics and metal, prevent that the plastics oxidation Decomposition from discharging toxic gas, reduce device damage and atmosphere pollution, and isolated plastics are reproducible plastics, isolated metal is recycling.
Above-described embodiment be take infrared heating pipe 7 as heater block as example is described, can also adopt following manner:
The heater block such as A, electrical heating wire, technology maturation realize simply, but efficiency is low with respect to the infrared heating mode.
B, electromagnetic type heater block, its structure can be: be arranged on the cylinder inner wall, the solenoid coaxial with cylinder, the power supply control parts, this coil passes into electric current by the power supply control parts, make in the cylinder and generate an electromagnetic field, screen drum rotates so that scrap electrical wires moves in this electromagnetic field (electromagnetic field effect that is equivalent to change is in scrap electrical wires), thereby so that the generation of the metal in scrap electrical wires heat heats the plastics on it.
When cylinder is metal material when making, then described electromagnetic field is the electromagnetic field of non-variation, by the screen drum rotation so that scrap electrical wires heat in the elect magnetic field motion.When cylinder was made for nonmetallic materials such as potteries, described electromagnetic field also can be the electromagnetic field that changes, and directly acts on the scrap electrical wires heating.
The power input part of above-described embodiment is to be realized by motor, belt, belt pulley, rolling bearing, is understood that, also can be motor by modes such as gear structure drivings, repeat no more.
The above only is preferred embodiment of the present invention; not in order to limit the present invention; for example; the module of difference in functionality can be realized by an integrated chip etc.; all within the spirit and principles in the present invention; any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a separator that is used for the waste and old electric line is characterized in that, comprising:
Cylinder;
Heater block is installed in the described cylinder;
Temperature controller is electrically connected with described heater block, is used for controlling described heater block and is heated to the temperature that the waste and old electric line covers the plastics melting;
Screen drum is positioned at described cylinder, is used for holding the waste and old electric line;
Power input part is coupled with described screen drum, is used for driving described screen drum rotation.
2. device according to claim 1 is characterized in that, also comprises:
Control module links to each other with described power input part and temperature controller, is used for controlling speed and the time that described power input part drives the screen drum rotation, and heating-up temperature and the time of control temperature controller control heater block.
3. device according to claim 1 is characterized in that, described cylinder comprises barrel, openable cover, the cylinder end;
The barrel tip position of described cylinder has for the air inlet pipe of introducing inert gas, and the barrel bottom position has blast pipe.
4. device according to claim 1 is characterized in that, the downward-sloping setting of mind-set cylinder feather edge in the edge at the bottom of the described cylinder cylinder; Cylinder feather edge place arranges a discharging opening.
5. device according to claim 1 is characterized in that, described heater block is infrared heating pipe.
6. device according to claim 1 is characterized in that, described heater block is the electromagnetic type heater block, comprising:
Solenoid is with coaxial being arranged on the described cylinder inner wall of cylinder;
The power supply control parts are connected with solenoid, are used for driving solenoid and generate an electromagnetic field.
7. device according to claim 1 is characterized in that, the outside of described cylinder is covered with heat-insulation layer and/or described cylinder internal layer is coated with nickel-carbon composite coating.
8. a separation method that is used for the waste and old electric line is characterized in that, comprising:
A, the waste and old electric line is heated, make described waste and old electric plastics that line covers reach molten condition;
B, by centrifugal motion, plastics are covered in the institute of described waste and old electric line separate with metal.
9. method according to claim 8 is characterized in that, also comprises before the steps A:
By importing inert gas the waste and old electric line is remained under anaerobic or the low-oxygen environment.
10. according to claim 8 or 9 described methods, it is characterized in that described heating is to use the infrared heating mode.
11. according to claim 8 or 9 described methods, it is characterized in that the temperature range that this waste and old electric line is heated is 160-180 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102024990A CN102886371A (en) | 2011-07-19 | 2011-07-19 | Device and method for separating waste and old electronic wires |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102024990A CN102886371A (en) | 2011-07-19 | 2011-07-19 | Device and method for separating waste and old electronic wires |
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| CN102886371A true CN102886371A (en) | 2013-01-23 |
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| CN2011102024990A Pending CN102886371A (en) | 2011-07-19 | 2011-07-19 | Device and method for separating waste and old electronic wires |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964627A (en) * | 2016-06-01 | 2016-09-28 | 徐宁 | Environmental protection treatment equipment of recycled plastic filter screen cloth and method thereof |
| CN109807162A (en) * | 2019-03-14 | 2019-05-28 | 南昌科卓科技有限公司 | A kind of efficient waste computer heavy metal collection system |
| CN110421743A (en) * | 2019-09-12 | 2019-11-08 | 南安市商宏机械科技有限公司 | It is a kind of to mix from the plastic crushing mixing granulator all-in-one machine rejected |
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| CN1899712A (en) * | 2005-07-18 | 2007-01-24 | 中国矿业大学(北京) | Method for recovering waste printed circuit board resource |
| CN101417284A (en) * | 2008-12-09 | 2009-04-29 | 中南大学 | Recovery method of waste circuit board value resource |
| CN101625915A (en) * | 2009-08-06 | 2010-01-13 | 中南大学 | Method for recycling waste tin-plated electric wires |
| CN102039298A (en) * | 2009-10-21 | 2011-05-04 | 海尔集团公司 | Equipment and method for disassembling components of circuit board |
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| JP2791645B2 (en) * | 1994-11-16 | 1998-08-27 | 千住金属工業株式会社 | Equipment for collecting valuables from printed circuit boards |
| CN1899712A (en) * | 2005-07-18 | 2007-01-24 | 中国矿业大学(北京) | Method for recovering waste printed circuit board resource |
| CN101417284A (en) * | 2008-12-09 | 2009-04-29 | 中南大学 | Recovery method of waste circuit board value resource |
| CN101625915A (en) * | 2009-08-06 | 2010-01-13 | 中南大学 | Method for recycling waste tin-plated electric wires |
| CN102039298A (en) * | 2009-10-21 | 2011-05-04 | 海尔集团公司 | Equipment and method for disassembling components of circuit board |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964627A (en) * | 2016-06-01 | 2016-09-28 | 徐宁 | Environmental protection treatment equipment of recycled plastic filter screen cloth and method thereof |
| CN109807162A (en) * | 2019-03-14 | 2019-05-28 | 南昌科卓科技有限公司 | A kind of efficient waste computer heavy metal collection system |
| CN110421743A (en) * | 2019-09-12 | 2019-11-08 | 南安市商宏机械科技有限公司 | It is a kind of to mix from the plastic crushing mixing granulator all-in-one machine rejected |
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