CN104339471B - Powder particle processing device - Google Patents
Powder particle processing device Download PDFInfo
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- CN104339471B CN104339471B CN201410363011.6A CN201410363011A CN104339471B CN 104339471 B CN104339471 B CN 104339471B CN 201410363011 A CN201410363011 A CN 201410363011A CN 104339471 B CN104339471 B CN 104339471B
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- retention basin
- processing device
- powder particle
- particle processing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
- B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Project of the invention is to provide the moisture absorption situation for the bulk material being able to suppress in the 1st retention basin, the powder particle processing device of the initial aqueous rate of the bulk material before inhibiting drying.As the powder particle processing device (1) of the invention of its solution, with the 1st retention basin (10), the 2nd retention basin (20) and the delivery pipe (30) for connecting two slots.Moreover, this powder particle processing device (1) has the 1st gas introduction part (60) for importing inert gas into the 1st retention basin (10) directly or by delivery pipe (30).Therefore, it can force to import inert gas into the 1st retention basin (10), inhibit the phenomenon that extraneous gas invades in the 1st retention basin (10).By means of this, the case where resin particle (9) moisture absorption being able to suppress in the 1st retention basin 10, the initial aqueous rate of the resin particle (9) before inhibiting drying.As a result, the moisture content of resin particle (9) can be made to be reduced to target moisture content in the 2nd retention basin (20).
Description
Technical field
The present invention relates to moisture content of the one side to the material (hereinafter referred to as " bulk material ") that powder or particle are constituted to control
Tubulation manages the powder particle processing device that bulk material is supplied to follow up device on one side.
Background technique
Always, it in the molding procedure of plastic products, is reserving in retention basin using by bulk materials such as resin particles by it
Bulk material after drying, is supplied to the powder particle processing device of injection moulding machine by drying.This powder particle processing device will be thrown
Enter 2nd retention basin conveying of the bulk material of the 1st retention basin by delivery pipe downstream.Then, by being mentioned into the 2nd retention basin
For the gas of heating, bulk material is dried.
For existing powder particle processing device, have in such as patent document 1 recorded.
Citation
Patent document 1: Japanese Laid-Open Patent Publication 7-68552 bulletin
Summary of the invention
Invention is wanted to solve the problems, such as
Existing powder particle processing device extraneous gas when bulk material is put into 1 retention basin is mixed into the 1st retention basin
Portion.And after putting into bulk material wherein, sometimes also there is extraneous gas to enter by gap of cover of the 1st retention basin etc.
Situation in 1st retention basin.Therefore, the bulk material in the 1st retention basin can touch the high extraneous gas of humidity, therefore before drying
The initial aqueous rate of bulk material may be higher.And the initial aqueous rate of bulk material it is excessively high when, often can not in the 2nd retention basin
The moisture content of bulk material is set to be reduced to target moisture content, or the drying time for needing extremely to grow.
Given this situation the present invention makes, it is intended that providing can be to the powder in the 1st retention basin
The moisture absorption situation of body is inhibited, the powder particle processing device of the initial aqueous rate of the bulk material before inhibiting drying.
The means solved the problems, such as
The 1st invention of the application is powder particle processing device, has the 1st retention basin of storage bulk material, positioned at described
The conveyance direction downstream side of 1st retention basin, the 2nd retention basin that bulk material is dried, connection the 1st retention basin and the 2nd
The delivery pipe of retention basin and inert gas is forced the import in the 1st retention basin the 1st directly or by the delivery pipe
Gas introduction part.
The 2nd invention of the application is the powder particle processing device of the 1st invention, has and utilizes from the 1st gas introduction part
The inert gas of importing makes the air pressure in the 1st retention basin be higher than external pressure.
The 3rd invention of the application is any powder particle processing device in the 1st invention~the 2nd invention, has and utilize from institute
The inert gas for stating the importing of the 1st gas introduction part makes the air pressure in the delivery pipe be higher than external pressure.
The 4th invention of the application is any powder particle processing device in the 1st invention~the 3rd invention, also has and be connected to
The circulation line of the delivery pipe, the inert gas imported from the 1st gas introduction part can recycle in the circulation line.
The 5th invention of the application is any powder particle processing device in the 1st invention~the 4th invention, is also equipped with from described
2nd retention basin is discharged the discharge pipe of bulk material and imports the 2nd gas introduction part of inert gas into the discharge pipe.
The 6th invention of the application is any powder particle processing device in the 1st invention~the 5th invention, has the described 1st
Retention basin has the opening for storing groove body and groove body is stored described in closing that the bottomed tube of opening is arranged at top
Cover, the 1st gas introduction part have and the gas importing piping for storing groove body and connecting.
The 7th invention of the application is any powder particle processing device in the 1st invention~the 6th invention, has the conveying
Also there is the air-flow for the air-flow for occurring to flow to above-mentioned 2nd retention basin from above-mentioned 1st retention basin means occur in pipe.
The 8th invention of the application is any powder particle processing device in the 1st invention~the 7th invention, has the conveying
Also there is the conveying that can indicate that bulk material starts to convey to start means in pipe.The 1st gas introduction part, can be according to the conveying
The instruction of beginning means starts to import inert gas before conveying bulk material.
The 9th invention of the application is any powder particle processing device in the 1st invention~the 8th invention, has the described 1st
Retention basin, for the retention basin for initially storing bulk material in the powder particle processing device.
Invention effect
If importing inert gas, energy by forcing into the 1st retention basin using the 1st invention~the 9th invention of the application
Enough inhibit the phenomenon that extraneous gas invades in the 1st retention basin.By means of this, it is able to suppress the suction of the bulk material in the 1st retention basin
It is wet, the initial aqueous rate of the bulk material before inhibiting drying.As a result, the moisture content of bulk material can be made in the 2nd retention basin
It is reduced to target moisture content.
In particular, if using the application the 2nd invention, can preferably inhibit extraneous gas invade the 1st retention basin in
The case where.
In particular, if using the application the 3rd invention, be able to suppress extraneous gas intrusion delivery pipe in situation.Cause
This, the moisture absorption situation of the bulk material in delivery pipe is inhibited.
In particular, if the 4th invention using the application can be by the gas in delivery pipe by recycling gas
Humidity and oxygen concentration are held in lower level.Thus, it is possible to preferably inhibit the moisture absorption situation of the bulk material in delivery pipe.
In particular, if the 5th invention using the application can prevent from drying by importing inert gas into discharge pipe
Bulk material moisture absorption and oxidation after dry-cure.
In particular, if using the application the 6th invention, even in the state of opening cover, also can be from gas
It imports piping and imports inert gas to the inside for storing groove body.Thus, it is possible to inhibit opening cover to storing in groove body
The case where extraneous gas is mixed into retention basin body interior when portion puts into bulk material.
In particular, if the 7th invention using the application inhibits the 1st by importing inert gas into the 1st retention basin
Pressure decline in retention basin.Therefore, it can be conveyed in the delivery pipe for connecting the 1st retention basin and the 2nd retention basin using air-flow
Bulk material, and situation about being able to suppress in extraneous gas the 1st retention basin of intrusion.
In particular, if can begin to lead before conveying bulk material using the 8th invention of the application and the 9th invention
Enter inert gas, make in the 1st retention basin and most begin to there is inert gas in the 2nd retention basin, remains the gas in retention basin
Pressure is higher than external pressure, to prevent bulk material moisture absorption and oxidation.
Detailed description of the invention
Fig. 1 shows the compositions of powder particle processing device.
Fig. 2 is the block diagram for indicating the structure of control system of powder particle processing device.
Fig. 3 is the flow chart of an example for the processing for indicating that powder particle processing device carries out.
Fig. 4 is the curve graph of the example of the water-cut variation of resin particle when indicating drying and processing.
Fig. 5 indicates the structure of the variation of powder particle processing device.
Fig. 6 indicates the structure of the variation of powder particle processing device.
Fig. 7 indicates the structure of the variation of powder particle processing device.
Description of symbols
1 powder particle processing device
2 injection moulding machines
9 resin particles
10 the 1st retention basins
11 store groove body
12 covers
20 the 2nd retention basins
24 conveyor hoppers
25 discharge pipes
26 dump valves
30 delivery pipes
Circulation line is used in 40 conveyings
41 filters
42 conveying air blowers
Circulation line is used in 50 drying
51 filters
52 drying air blowers
53 heaters
54 blow-off outlets
60 the 1st gas introduction parts
61 nitrogen gas generators
62 gases import piping
63 open and close valves
70 the 2nd gas introduction parts
71 nitrogen gas generators
72 gases import piping
73 open and close valves
80 control units
Specific embodiment
Ideal implementation form of the invention is illustrated with reference to the accompanying drawings.
The composition > of 1. powder particle processing device of <
Fig. 1 shows the compositions of the powder particle processing device 1 of an implementation form of the invention.This powder particle processing device 1 is
Resin particle 9 as bulk material is dried, the resin particle 9 after drying is then supplied to subsequent injection moulding machine 2
Device.As shown in Figure 1, the powder particle processing device 1 of this implementation form has the 1st retention basin 10, the 2nd retention basin 20, delivery pipe
30, conveying circulation line 40, drying circulation line 50, the 1st gas introduction part 60, the 2nd gas introduction part 70 and control
Portion 80.
1st retention basin 10 is that the resin particle 9 before drying is stored in internal container.1st retention basin 10 has top
Have the bottomed cylindrical of opening 110 stores groove body 11 and positioned at the cover 12 for storing 11 top of groove body.Retention basin master
The funnelform bottom that body 11 has generally cylindrical side wall 111 and slowly reduces downwards from the lower end of side wall 111
Portion 112.It is storing inside groove body 11, the space of setting storage resin particle 9.The closing of cover 12 stores 11 top of groove body
Opening 110.Also, when removing cover 12,11 top of groove body opening is stored, it can be by opening 110 to storing groove body 11
Launch resin particle 9 in inside.
2nd retention basin 20 is in the conveyance direction downstream side of the 1st retention basin 10, is the container of internal storage resin particle 9.
The funnelform bottom that 2nd retention basin 20 has generally cylindrical side wall 21, slowly reduces downwards from 21 lower end of side wall
The top plate portion 23 on the top of the 2nd retention basin 20 of portion 22 and covering.Storage resin particle 9 is internally provided in the 2nd retention basin 20
The space being baked to.
On 20 top of the 2nd retention basin, conveyor hopper 24 is set.Conveyor hopper 24 is to provide resin to the 2nd retention basin 20
The container of resin particle 9 is temporarily accommodated when grain 9.Conveyor hopper 24 can by what is be arranged on the top plate portion 23 of the 2nd retention basin 20
The input port 231 of opening and closing, connect with the 2nd retention basin 20.Again in the downstream side of the side connecting conveying pipe 30 of conveyor hopper 24
End.
On the other hand, in 20 lower part of the 2nd retention basin, the discharge pipe from the 2nd retention basin 20 discharge resin particle 9 is connected
25.Discharge pipe 25 is extended downward from the outlet 221 for the bottom 22 for being set to the 2nd retention basin 20.The downstream side of discharge pipe 25
End be connected to injection moulding machine 2.Outlet 221 is opened and closed by means of the mobile handoff of valve body 261 also, being arranged on discharge pipe 25
Dump valve 26.Valve body 261 can close the state of outlet 221 and keep out of the way space to the side for being set to discharge pipe 25
262 keep out of the way to move forward and backward between the state of opening outlet 221.
Delivery pipe 30 is that the piping of resin particle 9 is conveyed between the 1st retention basin 10 and the 2nd retention basin 20.Delivery pipe
The end of 30 conveying direction upstream side is connected to the outlet 113 in the setting of the bottom 112 of the 1st retention basin 10.On the other hand,
The end of the conveyance direction downstream side of delivery pipe 30 is connected to the side of conveyor hopper 24.That is, the 1st retention basin 10 and
2 retention basins 20 are connected using delivery pipe 30 and conveyor hopper 24.The resin particle 9 being discharged from the 1st retention basin 10 is by delivery pipe 30
The air-flow of interior generation is sent to conveyor hopper 24.
Conveying circulation line 40 is the air-flow in order to occur to flow to 24 side of conveyor hopper in delivery pipe 30, makes gas
The piping system of body circulation.Conveying is connected to the top of conveyor hopper 24 with the one end of circulation line 40.Also, conveying circulation
The other end of pipeline 40 is connected to delivery pipe 30.In the conveying interconnecting piece of circulation line 40 and conveyor hopper 24, setting is beaten
Mesoporous metal plate 241.Perforated metal plate 241 has the multiple perforations that can be limited resin particle 9 and pass through, while air being allowed to pass through
Hole.Also, the path midway of conveying circulation line 40, setting filter 41 and conveying air blower 42.
When making to convey the movement of air blower 42, as shown in figure 1 shown in arrow A1, conveying is occurred in circulation line 40 from material conveying
Bucket 24 flows to the air-flow of delivery pipe 30.Then, as shown in figure 1 shown in arrow A2, occur inside delivery pipe 30 from the 1st retention basin 10
The air-flow flowed to conveyor hopper 24.The resin particle 9 being discharged from the 1st retention basin 10 is sent to conveyor hopper 24 by the air-flow.
In addition, being trapped from the fine dust that conveyor hopper 24 is inhaled into conveying circulation line 40 by filter 41.Also,
Resin particle 9 is blocked from conveyor hopper 24 to conveying with the movement of circulation line 40 metal plate 241 that is perforated.Therefore, resin
Particle 9 can not flow into 40 side of conveying circulation line, and be held in conveyor hopper 24.
After resin particle 9 is held in conveyor hopper 24, stop pneumatic conveying, it, will when 231 automatic opening of input port
Resin particle 9 is put into the 2nd retention basin 20 from conveyor hopper 24 by input port 231.It is repeated from the 1st and stores in this way
Resin particle 9 from slot 10 to the 2nd retention basin 20 pneumatic conveying and input port 231 opening, resin particle 9 is stored in the 2nd
In retention basin 20.
Drying is to make matching for gas circulation to provide the hot wind of drying into the 2nd retention basin 20 with circulation line 50
Guard system.The suction port 232 being arranged on the one end of drying circulation line 50 and the top plate portion 23 of the 2nd retention basin 20 is connect.
The other end of drying circulation line 50 penetrates through the side wall 21 of the 2nd retention basin 20, is connected to and configures inside the 2nd retention basin 20
Blow-off outlet 54.Again in midway setting filter 51, drying air blower 52 and the heating in the drying path of circulation line 50
Device 53.
Once making to dry the movement of air blower 52, as shown in figure 1 shown in arrow A3, occur in drying circulation line 50 from attraction
The air-flows that mouth 232 is flowed to blow-off outlet 54.From the sucking drying of the 2nd retention basin 20 with the fine dust of circulation line 50 by filter
51 are trapped.Also, the gas by filter 51 becomes hot wind due to being heated the heating of device 53.Then, the hot wind from
Blow-off outlet 54 blows to inside the 2nd retention basin 20.In addition, adsorbed gas also can be set between filter 51 and heater 53
In include moisture absorber.
The hot wind blown out from blow-off outlet 54 is by the gap of the resin particle 9 stored inside the 2nd retention basin 20, to the 2nd storage
Stay diffusion in slot 20.By means of this, resin particle 9 is heated, moisture is evaporated from resin particle 9, and resin particle 9 is dried
It is dry.That is, the gas spread into the 2nd retention basin 20 absorbs moisture from resin particle 9.And with blow out from blow-off outlet 54
The gas of hot wind same amount of moisture absorption is attracted to drying circulation line 50 by suction port 232 from the 2nd retention basin 20 once again.
In this way, in this embodiment, drying circulation line 50 plays the drying hand of the resin particle 9 in the 2nd retention basin 20 of drying
The effect of section.
1st gas introduction part 60 is that the mechanism of inert nitrogen gas is imported into the 1st retention basin 10.1st gas introduction part
60 there is nitrogen gas generator 61 and gas to import piping 62.The end that gas imports the upstream side of piping 62 is connected to nitrogen
Device 61.The end that gas imports the downstream side of piping 62 is connected to the introducing port being arranged in the side wall 111 for storing groove body 11
114.Open and close valve 63 is arranged in the midway for importing the path of piping 62 in gas again.It can also be not provided with open and close valve 63, and instead
Flow control valve is set.
The nitrogen of the drying bigger than the air pressure in external pressure and the 1st retention basin 10 occurs for nitrogen gas generator 61.Therefore, one
Denier opens open and close valve 63, just imports piping 62 by gas from nitrogen gas generator 61 and provides the nitrogen of positive pressure into the 1st retention basin 10
Gas.That is, nitrogen is forced to import in the 1st retention basin 10.So, by means of the nitrogen, make in the 1st retention basin 10
Air pressure be higher than external pressure.Thus, it is possible to inhibit the phenomenon that extraneous gas invades 10 inside of the 1st retention basin.As a result, energy
Enough inhibit the phenomenon that 9 moisture absorption of resin particle stored in the 1st retention basin 10.
In particular, the end that gas imports the downstream side of piping 62 is not to be connected to lid in the powder particle processing device 1
Portion 12, but be connected to and store groove body 11.Therefore, even also can in the state of removing the cover 12 of the 1st retention basin 10
Nitrogen is imported 62 importing of piping from gas to store inside groove body 11.For example, the investment of resin particle 9 is stored groove body 11
When, it can continue to from 62 importing of gas importing piping store nitrogen inside groove body 11.By means of this, it is able to suppress investment tree
Extraneous gas stores the generation of the situation in groove body 11 by 110 intrusion of opening when rouge particle 9.Thus, it is possible to inhibit to put into
Generation when material the case where 9 moisture absorption of resin particle.
Also, a part of the gas in the 1st retention basin 10 is inhaled when delivery pipe 30 is using air-flow conveying resin particle 9
Toward delivery pipe 30.Therefore, the pressure in the 1st retention basin 10 is easy relatively low.But this powder particle processing device 1 is by by nitrogen
Conductance enters in the 1st retention basin 10, the pressure decline being able to suppress in the 1st retention basin 10.Thus, it is possible to utilizing air-flow conveying tree
While rouge particle 9, extraneous gas is inhibited to invade in the 1st retention basin 10.As a result, can preferably inhibit the 1st retention basin
The moisture absorption of the resin particle 9 stored in 10.
2nd gas introduction part 70 is the mechanism imported inert nitrogen gas in discharge pipe 25.2nd gas introduction part 70
Piping 72 is imported with nitrogen gas generator 71 and gas.The end that gas imports the upstream side of piping 72 is connected to nitrogen gas generator
71.Gas imports the end in the downstream side of piping 72, and be connected to the side setting of discharge pipe 25 keeps out of the way space 262.Again in gas
Body imports the path midway of piping 72, and open and close valve 73 is arranged.It can also be not provided with open and close valve 73, and flow adjusting is instead set
Valve.
The nitrogen of the drying bigger than the air pressure in external pressure and discharge pipe 25 occurs for nitrogen gas generator 71.Therefore, once
Open and close valve 73 is opened, nitrogen gas generator 71 just imports piping 72 by gas and provides the nitrogen of positive pressure to the inside of discharge pipe 25.
That is, forcing to import nitrogen inside discharge pipe 25.So, by means of the nitrogen, the air pressure in discharge pipe 25 is high
Pressure in external pressure and injection moulding machine 2.Thus, it is possible to inhibit the gas in injection moulding machine 2 inverse to discharge pipe 25
To flowing.Also, being able to suppress the resin particle 9 dried in the 2nd retention basin 20 moisture absorption and oxidation in discharge pipe 25.
In particular, the temperature in discharge pipe 25 is lower than obtaining the temperature in the 2nd retention basin 20 of hot blast feeding.Therefore, from
2nd retention basin 20 to the resin particle 9 that discharge pipe 25 is discharged be easy to absorb while temperature reduces moisture and other gases at
Point.But this powder particle processing device 1 passes through the nitrogen that will be dried and imports discharge pipe 25 from the 2nd gas introduction part 70, makes
Humidity and oxygen concentration in discharge pipe 25 reduce.By means of this, the moisture absorption of the resin particle 9 after being able to suppress drying and processing and oxygen
Change.
In the powder particle processing device 1 of this implementation form, from the 1st retention basin 10 through delivery pipe 30, conveyor hopper 24 and
The transport path of resin particle 9 of 2nd retention basin 20 to discharge pipe 25 substantially forms sealing system.Once being imported from the 1st gas
Portion 60 persistently imports nitrogen, which flows into delivery pipe 30, in 30 He of delivery pipe while filling the 1st 10 inside of retention basin
Conveying is recycled in circulation line 40.Also, once persistently importing nitrogen from the 2nd gas introduction part 70, which is discharged in filling
While 25 inside of pipe, the 2nd retention basin 20 is flowed into, is recycled in the 2nd retention basin 20 and drying in circulation line 50.Its result
It is, the resin particle 9 from the 1st retention basin 10 through delivery pipe 30, conveyor hopper 24 and the 2nd retention basin 20 to discharge pipe 25
Whole transport path is full of by the nitrogen of positive pressure.By means of this, it is able to suppress the influence such as humidity and temperature of extraneous gas, as
Whole device is able to suppress the moisture content and amount of oxidation of resin particle 9.
Fig. 2 is the block diagram for indicating the structure of control system of powder particle processing device 1.Control unit 80 is at bulk material
The each section for managing device 1 carries out the means of action control.As shown in Fig. 2, control unit 80 respectively with above-mentioned dump valve 26, conveyance drum
Blower 42, drying air blower 52, heater 53, open and close valve 63 and open and close valve 73 are electrically connected.Control unit 80 can use tool
There is the computer of the arithmetic processing sections such as CPU and memory etc. to constitute, or also can use electronic circuit composition.Control unit 80
According to preset program and from externally input signal, action control is carried out to above-mentioned each portion.By means of this, at bulk material
Resin particle 9 in reason device 1 is handled.
Again, open and close valve 63 and open and close valve 73 except with it is electrically connected in addition to, can also be by energy such as air as driving force
It is driven.In this way, the power supply when powder particle processing device 1 is in close state or by the factory for having powder particle processing device 1
When in power failure, can also continue from the 1st gas introduction part 60 to the 1st retention basin 10 and from the 2nd gas introduction part 70 to
Discharge pipe 25 imports inert nitrogen gas.
In addition, dump valve 26, open and close valve 63 and open and close valve 73 can not also be connect with control unit 80, and by user into
The manual opening and closing operations of row.
The movement > of 2. powder particle processing device of <
Then the processing of resin particle 9 in above-mentioned powder particle processing device 1 is illustrated below.Fig. 3 is to indicate powder
The flow chart of an example for the processing that body processing unit 1 carries out.
In this powder particle processing device 1, when handling resin particle 9, firstly, being passed through from the 1st retention basin 10
Whole transport path that delivery pipe 30, conveyor hopper 24 and the 2nd retention basin 20 arrive the resin particle 9 of discharge pipe 25 fills nitrogen
Gas (step S1).Specifically, opening open and close valve 63, nitrogen is imported into the 1st retention basin 10 from the 1st gas introduction part 60, together
When open open and close valve 73, import nitrogen into discharge pipe 25 from the 2nd gas introduction part 70.By means of this, with the 1st storage of nitrogen displacement
Stay the air in slot 10, delivery pipe 30, conveyor hopper 24, the 2nd retention basin 20 and discharge pipe 25.
Then, resin particle 9 (step S2) is put into the 1st retention basin 10.That is, removing the 1st retention basin 10
Cover 12 puts into resin particle 9 to storing by storing the opening 110 of groove body 11 in groove body 11.At this moment, the 1st gas is led
Enter portion 60 to continue to provide nitrogen.Therefore, extraneous gas is mixed into situation about storing in groove body 11 and is inhibited.Also, investment stores
Resin particle 9 in slot 10 is immediately placed under the nitrogen atmosphere dried.By means of this, the moisture absorption situation of resin particle 9 is obtained
To inhibition.
Once the investment of resin particle 9 is completed, cover 12 is covered once again, closes the opening 110 for storing groove body 11.So
Afterwards, make to convey the work of air blower 42, stream of nitrogen gas occurs in conveying circulation line 40 and delivery pipe 30.So, from
The resin particle 9 of 1st retention basin, 10 lower part discharge is sent to conveyor hopper 24 (step S3) by air-flow by delivery pipe 30.At this moment,
It is full of inside delivery pipe 30 by the nitrogen of positive pressure.Therefore 9 moisture absorption of resin particle being able to suppress in process of air delivery.
The resin particle 9 for being reserving at conveyor hopper 24 is put into the 2nd storage when the input port 231 of the 2nd retention basin 20 is opened
It stays in slot 20.Then, the drying and processing (step S4) of resin particle 9 is carried out inside the 2nd retention basin 20.Specifically, passing through
Make to dry air blower 52 and heater 53 and work, from blow-off outlet 54 to the 2nd retention basin 20 inside nitrogen hot wind is provided.By means of
This, moisture is evaporated from resin particle 9, and the moisture content of resin particle 9 drops to target value.
The drying and processing of stipulated time once terminates, and turns on dump valve 26.By means of this, pass through from the 2nd retention basin 20
Resin particle 9 (step S5) is discharged to injection moulding machine 2 in discharge pipe 25.At this moment, the temperature ratio of the resin particle 9 in discharge pipe 25
It is low when step S4 is dried.But due to importing nitrogen from the 2nd gas introduction part 70 to discharge pipe 25, in discharge pipe 25
Portion is full of by nitrogen.Therefore, the feelings of resin particle 9 adsorption moisture and other gas componants once again after being able to suppress drying
Condition.
Moreover as to Fig. 3 description, whole transport path to be filled to the act of nitrogen (step S1), it is also possible to
Investment resin particle 9 (step S2), the resin particle 9 being discharged from 10 lower part of the 1st retention basin pass through defeated in 1 retention basin 10 of Yu Xiang
Send pipe 30 by air-flow be sent to conveyor hopper 24 (step S3), inside the 2nd retention basin 20 carry out resin particle 9 drying and processing
(step S4) and resin particle 9 (step S5) is discharged to injection moulding machine 2 from the 2nd retention basin 20 by discharge pipe 25.May be used also
For being discharged after resin particle 9 (step S5) completion from the 2nd retention basin 20 by discharge pipe 25 to injection moulding machine 2.
As described above, this powder particle processing device 1 inhibits resin particle 9 by providing nitrogen to the 1st retention basin 10
Moisture absorption.That is, the initial aqueous rate to the resin particle 9 before drying implements preparation property management.Thereafter, by the 2nd storage
It stays and resin particle 9 is dried in slot 20, the moisture content of resin particle 9 is made to be reduced to target value.By means of this, inhibit external
The influence of the humidity and temperature of gas carries out high-precision management to the moisture content of resin particle 9.It is able to suppress resin particle 9 again
Oxidation.
Fig. 4 is the curve for indicating the change case of moisture content of the resin particle 9 when the 2nd retention basin 20 carries out drying and processing
Figure.As shown in figure 4, once carrying out drying and processing in the 2nd retention basin 20, with the past of drying time, resin particle 9 contains
The decline of water rate.To shown in C2, for the resin particle 9 that initial aqueous rate is inhibited, make such as the curve C1 in Fig. 4
It is reduced to the moisture content P as target.But as shown in the curve C3 in Fig. 4, when initial aqueous rate is excessively high, sometimes not
Target moisture content P, or the drying time for needing extremely to grow can be reached.
At this point, the powder particle processing device 1 of this implementation form, as described above, being able to suppress in the 1st retention basin 10
The moisture absorption of resin particle 9 before drying.By means of this, it is able to suppress the initial aqueous rate of resin particle 9.To in Fig. 4
The moisture content of resin particle 9 shown in C2, can be steadily reduced to target moisture content P by curve C1.That is, due to energy
It is enough that resin particle 9 is dried in always stable initial aqueous rate, the moisture content reached after drying can be made to stabilize.
3. variation > of <
One implementation form of the present invention is illustrated above, but the present invention is not limited to above-mentioned implementation forms.
Fig. 5 indicates the composition of the powder particle processing device 1 of a variation.In the example of Fig. 5, the 1st gas introduction part 60
The end that gas imports the downstream side of piping 62 is not connected to the 1st retention basin 10 instead of, is connected to conveying circulation line 40.
Even such construction, if importing piping 62 from gas provides the nitrogen of positive pressure, conveying circulation line can be passed through
40, delivery pipe 30 and outlet 113 force the inside that nitrogen is imported to the 1st retention basin 10.Thus, it is possible to inhibit external gas
Body invades the situation in the 1st retention basin 10.
In addition, the end that gas imports the downstream side of piping 62 can connect in other positions on conveying circulation line 40
It sets, or also can connect in delivery pipe 30.
Fig. 6 indicates the composition of the powder particle processing device 1 of other variations.In the example of Fig. 6, conveying circulation line 40
It is removed, the 1st retention basin 10 is configured above the 2nd retention basin 20.Moreover, the outlet 113 of the 1st retention basin 10 is stored with the 2nd
The input port 231 of slot 20 is connected using the delivery pipe 30 extended above and below plumb line direction.Setting can in delivery pipe 30 again
Switch the dump valve 13 of the opening and closing of outlet 113.When conveying resin particle 9 from the 1st retention basin 10 to the 2nd retention basin 20, make to arrange
Valve 13 works out, opens outlet 113.By means of this, fall resin particle 9 freely.
Even such structure, as long as forcing to import positive pressure to the inside of the 1st retention basin 10 from the 1st gas introduction part 60
Nitrogen, it will be able to inhibit extraneous gas invade the 1st retention basin 10 in.So as to inhibit the resin in the 1st retention basin 10
The moisture absorption of grain 9.
Fig. 7 indicates the composition of the powder particle processing device 1 of other variations.It is identical as the example of Fig. 6 in the example of Fig. 7,
Above the 2nd retention basin 20, the 1st retention basin 10 is connected by delivery pipe 30.Also, in the example of fig. 7, the 1st gas introduction part
60 gas imports the end in the downstream side of piping 62, does not connect with the 1st retention basin 10, and connect with delivery pipe 30.Even
Such structure, as long as also importing piping 62 from gas provides the nitrogen of positive pressure, it will be able to nitrogen be passed through delivery pipe 30 by force
And outlet 113 imports inside the 1st retention basin 10.Thus, it is possible to which extraneous gas is inhibited to invade the feelings in the 1st retention basin 10
Condition.
Also, in above-mentioned embodiment, nitrogen is imported from the 1st gas introduction part 60 and the 2nd gas introduction part 70, but
Other inert gases such as nitrogen can not be inputted, and instead imports argon gas.It can be led again with the 1st gas introduction part and the 2nd gas
Enter portion and imports inert gas from the inert gas generator being set to outside powder particle processing device.
Again, powder particle processing device of the invention can also be using the bulk material other than resin particle as process object.
Also, the structure of powder particle processing device thin portion may also be distinct from that Fig. 1, Fig. 5, Fig. 6 or shown in Fig. 7 of the application
Structure.
In addition, can also be fitted in the range of not conflicting in each element of the appearance such as above-mentioned implementation form and variation
Work as combination.
Claims (14)
1. a kind of powder particle processing device, which is characterized in that have:
1st retention basin stores bulk material without heating to the bulk material；
2nd retention basin is located at conveyance direction downstream side compared to the 1st retention basin, is dried by heating to bulk material
It is dry, and the bulk material is discharged to injection moulding machine by discharge pipe；
Delivery pipe connects the 1st retention basin and the 2nd retention basin；And
Means occur for air-flow, and the air-flow that the 2nd retention basin is flowed to from the 1st retention basin occurs in the delivery pipe,
Wherein, it is replaced in the 1st retention basin by inert gas；And
The discharge pipe is set to the described 2nd and stores trench bottom and extend downwardly, and the end in downstream side is connected to injection moulding machine
On.
2. powder particle processing device according to claim 1, which is characterized in that also have circulation line, the circulation pipe
Road is connected to the delivery pipe and the air-flow from the 2nd retention basin side towards the delivery pipe occurs.
3. powder particle processing device according to claim 1 or 2, which is characterized in that be also equipped with and introduce inert gas into institute
State the 1st gas introduction part in the 1st retention basin.
4. powder particle processing device according to claim 3, which is characterized in that led using from the 1st gas introduction part
The inert gas entered makes the air pressure in the 1st retention basin be higher than external pressure.
5. powder particle processing device according to claim 1 or 2, which is characterized in that it is also equipped with the 2nd gas introduction part, to
Inert gas is imported in the discharge pipe.
6. powder particle processing device according to claim 3, which is characterized in that the 1st retention basin has:
What top had a bottomed tube of opening stores groove body；And
The cover of the opening of groove body is stored described in closing,
Wherein, the 1st gas introduction part has and the gas importing piping for storing groove body and connecting.
7. powder particle processing device according to claim 6, which is characterized in that remove after the cover to the retention basin
Bulk material is put into main body.
8. a kind of powder particle processing device, which is characterized in that have:
1st retention basin stores bulk material without heating to the bulk material；
2nd retention basin is located at conveyance direction downstream side compared to the 1st retention basin, dries to bulk material, and lead to
It crosses discharge pipe and the bulk material is discharged to injection moulding machine；
Delivery pipe connects the 1st retention basin and the 2nd retention basin；And
Means occur for air-flow, and the air-flow that the 2nd retention basin is flowed to from the 1st retention basin occurs in the delivery pipe,
Wherein, it is replaced in the delivery pipe by inert gas；And
The discharge pipe is set to the described 2nd and stores trench bottom and extend downwardly, and the end in downstream side is connected to injection moulding machine
On.
9. powder particle processing device according to claim 8, which is characterized in that also have circulation line, the circulation pipe
Road is connected to the delivery pipe and the air-flow from the 2nd retention basin side towards the delivery pipe occurs.
10. powder particle processing device according to claim 8 or claim 9, which is characterized in that be also equipped with and introduce inert gas into institute
State the 1st gas introduction part of delivery pipe.
11. powder particle processing device according to claim 10, which is characterized in that utilize from the 1st gas introduction part
The inert gas of importing makes the air pressure in the delivery pipe be higher than external pressure.
12. powder particle processing device according to claim 8 or claim 9, which is characterized in that it is also equipped with the 2nd gas introduction part, to
Inert gas is imported in the discharge pipe.
13. powder particle processing device according to claim 10, which is characterized in that the 1st retention basin has:
What top had a bottomed tube of opening stores groove body；And
The cover of the opening of groove body is stored described in closing.
14. powder particle processing device according to claim 13, which is characterized in that stored after removing the cover to described
Bulk material is put into groove body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013161395A JP2015030191A (en) | 2013-08-02 | 2013-08-02 | Treatment apparatus of powder and granular material |
| JP2013-161395 | 2013-08-02 |
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| Publication Number | Publication Date |
|---|---|
| CN104339471A CN104339471A (en) | 2015-02-11 |
| CN104339471B true CN104339471B (en) | 2019-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410363011.6A Active CN104339471B (en) | 2013-08-02 | 2014-07-28 | Powder particle processing device |
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| JP (1) | JP2015030191A (en) |
| KR (1) | KR20150016076A (en) |
| CN (1) | CN104339471B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6644483B2 (en) * | 2015-06-12 | 2020-02-12 | 株式会社カワタ | Heating device and method of controlling heating device |
| JP2017020707A (en) * | 2015-07-10 | 2017-01-26 | 株式会社カワタ | Heating device |
| JP3208382U (en) * | 2016-10-28 | 2017-01-05 | 株式会社カワタ | Drying equipment |
| CN107906940A (en) * | 2017-12-15 | 2018-04-13 | 川田机械制造(上海)有限公司 | Drying system and corresponding drying system integrate |
| JP7132592B2 (en) * | 2018-04-05 | 2022-09-07 | 株式会社松井製作所 | Drying system and drying method |
| CN110341119B (en) * | 2019-06-28 | 2021-09-07 | 温州市鸿燊自动化有限公司 | Energy-saving and environment-friendly material sucking and drying integrated machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01181624A (en) * | 1987-06-04 | 1989-07-19 | Matsui Seisakusho:Kk | Pneumatic transport method and device for resin material |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0733110Y2 (en) * | 1988-07-07 | 1995-07-31 | 株式会社松井製作所 | Dehumidifying and drying device using an inert gas as a drying medium |
| JPH0768552A (en) * | 1993-09-02 | 1995-03-14 | Idemitsu Material Kk | Apparatus and method for supplying molding raw material |
| CN2601163Y (en) * | 2003-01-06 | 2004-01-28 | 徐均佑 | Stepped temp difference dryer |
| CN101370576B (en) * | 2006-02-14 | 2012-01-11 | 株式会社吴羽 | Continuous particulate high-temperature gas treatment apparatus and method of treating |
| JP5669376B2 (en) * | 2008-11-04 | 2015-02-12 | 株式会社カワタ | Drying device for powder |
| JP5298041B2 (en) * | 2010-02-03 | 2013-09-25 | 株式会社カワタ | Drying apparatus and inert gas replacement method |
| JP2012180999A (en) * | 2011-03-03 | 2012-09-20 | Kawata Mfg Co Ltd | Drying system and drying method |
-
2013
- 2013-08-02 JP JP2013161395A patent/JP2015030191A/en active Pending
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2014
- 2014-02-18 KR KR1020140018162A patent/KR20150016076A/en not_active Application Discontinuation
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01181624A (en) * | 1987-06-04 | 1989-07-19 | Matsui Seisakusho:Kk | Pneumatic transport method and device for resin material |
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| Publication number | Publication date |
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| CN104339471A (en) | 2015-02-11 |
| KR20150016076A (en) | 2015-02-11 |
| JP2015030191A (en) | 2015-02-16 |
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