CN104339471A - Powder body processing unit - Google Patents
Powder body processing unit Download PDFInfo
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- CN104339471A CN104339471A CN201410363011.6A CN201410363011A CN104339471A CN 104339471 A CN104339471 A CN 104339471A CN 201410363011 A CN201410363011 A CN 201410363011A CN 104339471 A CN104339471 A CN 104339471A
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- Prior art keywords
- retention basin
- processing device
- powder particle
- gas
- 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
Abstract
The invention provides a powder body processing unit, the moisture absorption condition of powder bodies in a first holding tank can be restrained, and the initial moisture content of the powder bodies before the drying process is reduced. The powder body processing unit (1) is provided with a first holding tank (10), a second holding tank (20) and a conveyer pipe (30) connecting the two tanks. Furthermore, the powder body processing unit (1) is provided with a first gas introducing part (60) which directly introduces inert gases into the first holding tank (10) or introduces inert gases into the first holding tank (10) through the conveyer pipe (30). Consequently, inert gases can be introduced into the first holding tank (10) forcibly, and the case that external gases intrude into the first holding tank (10) is avoided. In this way, the moisture absorption condition of resin particles (9) in the first holding tank (10) can be restrained, and the initial moisture content of the resin particles (9) before the drying process is reduced. Consequently, in the second holding tank (20), the moisture content of the resin particles (9) can be reduced to a standard moisture content.
Description
Technical field
The present invention relates to while carry out control and management while bulk material to be supplied to the powder particle processing device of follow up device to the moisture content of the material (hereinafter referred to as " bulk material ") that powder or particle are formed.
Background technology
Always, in the molding procedure of plastic products, use the bulk materials such as resin particle to be reserving in retention basin and dried, the bulk material after drying is supplied to the powder particle processing device of injection moulding machine.The bulk material of input the 1st retention basin is carried by the 2nd retention basin of carrier pipe to downstream by this powder particle processing device.Then, by providing the gas of heating in the 2nd retention basin, bulk material is dried.
For existing powder particle processing device, described in such as patent document 1 has.
At first technical literature
Patent document 1: Unexamined Patent 7-68552 publication
Summary of the invention
The problem solved is wanted in invention
It is inner that existing powder particle processing device extraneous gas when bulk material being dropped into the 1st retention basin is mixed into the 1st retention basin.And bulk material is dropped into wherein, sometimes also there is extraneous gas to be entered situation in the 1st retention basin by the gap etc. of the cap of the 1st retention basin.Therefore, the bulk material in the 1st retention basin can touch the high extraneous gas of humidity, and the initial aqueous rate of the bulk material before therefore drying may be higher.And the initial aqueous rate of bulk material too high time, in the 2nd retention basin, the moisture content of bulk material often cannot be made to be reduced to target moisture content, or to need the drying time extremely grown.
The present invention makes in view of such situation, its object is to, and provides and can be suppressed the moisture absorption situation of the bulk material in the 1st retention basin, suppresses the powder particle processing device of the initial aqueous rate of the bulk material before drying.
The means of dealing with problems
1st invention of the application is powder particle processing device, it possess storage bulk material the 1st retention basin, be positioned at the conveyance direction downstream side of described 1st retention basin, the 2nd retention basin that bulk material is dried, the carrier pipe connecting described 1st retention basin and the 2nd retention basin and directly or the 1st gas introduction part inert gas Strong system imported by described carrier pipe in described 1st retention basin.
2nd invention of the application is the powder particle processing device of the 1st invention, possesses the inert gas utilizing and import from described 1st gas introduction part, makes air pressure in described 1st retention basin higher than external pressure.
3rd invention of the application is the arbitrary powder particle processing device in the 1st invention ~ the 2nd invention, possesses the inert gas utilizing and import from described 1st gas introduction part, makes air pressure in described carrier pipe higher than external pressure.
4th invention of the application, is the arbitrary powder particle processing device in the 1st invention ~ the 3rd invention, also has the circulation line being connected to described carrier pipe, and the inert gas imported from described 1st gas introduction part can circulate described circulation line.
5th invention of the application is the arbitrary powder particle processing device in the 1st invention ~ the 4th invention, also possesses and discharges the discharge pipe of bulk material from described 2nd retention basin and in described discharge pipe, import the 2nd gas introduction part of inert gas.
6th invention of the application, it is the arbitrary powder particle processing device in the 1st invention ~ the 5th invention, have described 1st retention basin to possess top and have there is the retention basin main body of bottom tube-like and closes the cap of described opening of described retention basin main body of opening, described 1st gas introduction part has the gas be connected with described retention basin main body and imports pipe arrangement.
7th invention of the application is the arbitrary powder particle processing device in the 1st invention ~ the 6th invention, has in described carrier pipe the air-flow generation means also having and the air-flow flowing to above-mentioned 2nd retention basin from above-mentioned 1st retention basin occurs.
8th invention of the application is the arbitrary powder particle processing device in the 1st invention ~ the 7th invention, possess in described carrier pipe also have can indicate bulk material start carry conveying start means.Described 1st gas introduction part, can start to import inert gas according to the instruction of described conveying beginning means before conveying bulk material.
9th invention of the application is the arbitrary powder particle processing device in the 1st invention ~ the 8th invention, has described 1st retention basin, for storing the retention basin of bulk material in described powder particle processing device at first.
Invention effect
If adopt the 1st invention ~ the 9th invention of the application, by forcing to import inert gas in the 1st retention basin, the situation in extraneous gas intrusion the 1st retention basin can be suppressed.By means of this, the moisture absorption of the bulk material in the 1st retention basin can be suppressed, suppress the initial aqueous rate of the bulk material before drying.Consequently, in the 2nd retention basin, the moisture content of bulk material can be made to be reduced to target moisture content.
Particularly, if adopt the 2nd invention of the application, the situation in extraneous gas intrusion the 1st retention basin can be suppressed better.
Particularly, if adopt the 3rd invention of the application, the situation in extraneous gas intrusion carrier pipe can be suppressed.Therefore, the moisture absorption situation of the bulk material in carrier pipe is suppressed.
Particularly, if adopt the 4th invention of the application, by making gas circulate, the humidity of the gas in carrier pipe and oxygen concentration can be held in lower level.Thus, the moisture absorption situation of the bulk material in carrier pipe can be suppressed better.
Particularly, if adopt the 5th invention of the application, by importing inert gas in discharge pipe, the bulk material moisture absorption after drying and processing and oxidation can be prevented.
Particularly, if adopt the 6th invention of the application, even under the state opening cap, also the inside importing inert gas of pipe arrangement to retention basin main body can be imported from gas.Thus, the extraneous gas when opening cap and dropping into bulk material to retention basin body interior can be suppressed to be mixed into the situation of retention basin body interior.
Particularly, if adopt the 7th invention of the application, by importing inert gas in the 1st retention basin, the pressure drop in the 1st retention basin is suppressed.Therefore, it is possible to utilize pneumatic convey bulk material in the carrier pipe of connection the 1st retention basin and the 2nd retention basin, and extraneous gas can be suppressed to invade situation in the 1st retention basin.
Particularly, if adopt the 8th invention and the 9th invention of the application, can just start to import inert gas before conveying bulk material, make to begin just there is inert gas most in the 1st retention basin and in the 2nd retention basin, remain that air pressure in retention basin is higher than external pressure, to prevent bulk material moisture absorption and oxidation.
Accompanying drawing explanation
Fig. 1 represents the formation of powder particle processing device.
Fig. 2 is the block diagram of the structure of the control system representing powder particle processing device.
Fig. 3 is the flow chart of one of process representing that powder particle processing device carries out example.
Fig. 4 is the curve map of the example of the water-cut variation of resin particle when representing drying and processing.
Fig. 5 represents the structure of the variation of powder particle processing device.
Fig. 6 represents the structure of the variation of powder particle processing device.
Fig. 7 represents the structure of the variation of powder particle processing device.
Description of reference numerals
1 powder particle processing device
2 injection moulding machines
9 resin particles
10 the 1st retention basins
11 retention basin main bodys
12 caps
20 the 2nd retention basins
24 conveyor hoppers
25 discharge pipes
26 dump valves
30 carrier pipes
40 conveying circulation lines
41 filters
42 conveyance drum blower fans
50 oven dry circulation lines
51 filters
52 dry air blast
53 heaters
54 blow-off outlets
60 the 1st gas introduction parts
61 nitrogen gas generators
62 gases import pipe arrangement
63 open and close valves
70 the 2nd gas introduction parts
71 nitrogen gas generators
72 gases import pipe arrangement
73 open and close valves
80 control parts
Detailed description of the invention
With reference to the accompanying drawings desirable embodiment of the present invention is described.
The formation > of < 1. powder particle processing device
Fig. 1 represents the formation of the powder particle processing device 1 of the present invention one embodiment.This powder particle processing device 1 is dried by the resin particle 9 as bulk material, then the resin particle 9 after oven dry is supplied to the device of follow-up injection moulding machine 2.As shown in Figure 1, the powder particle processing device 1 of this embodiment has the 1st retention basin 10, the 2nd retention basin 20, carrier pipe 30, conveying circulation line 40, oven dry circulation line 50, the 1st gas introduction part 60, the 2nd gas introduction part 70 and control part 80.
1st retention basin 10 is that the resin particle 9 before drying is stored in inner container.1st retention basin 10 possesses top and has the retention basin main body 11 of the bottomed cylindrical of opening 110 and be positioned at the cap 12 on retention basin main body 11 top.Retention basin main body 11 has the funnelform bottom 112 being roughly cylindric sidewall 111 and slowly reducing from the bottom of sidewall 111 downwards.Inner in retention basin main body 11, the space of storage resin particle 9 is set.Cap 12 closes the opening 110 on retention basin main body 11 top.Again, when taking off cap 12, retention basin main body 11 top is opened, and can throw in resin particle 9 by opening 110 to retention basin main body 11 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 9.2nd retention basin 20 has the top plate portion 23 on the top being roughly cylindric sidewall 21, the funnelform bottom 22 slowly reduced from sidewall 21 bottom downwards and covering the 2nd retention basin 20.The space that storage resin particle 9 is dried is provided with in the 2nd retention basin 20 inside.
On the 2nd retention basin 20 top, conveyor hopper 24 is set.Conveyor hopper 24 is providing the container temporarily holding resin particle 9 during resin particle 9 to the 2nd retention basin 20.Conveyor hopper 24, by the input port to be opened/closed 231 arranged on the top plate portion 23 of the 2nd retention basin 20, is connected with the 2nd retention basin 20.Again in the end in the downstream of the sidepiece connecting conveying pipe 30 of conveyor hopper 24.
On the other hand, in the 2nd retention basin 20 bottom, the discharge pipe 25 of discharging resin particle 9 from the 2nd retention basin 20 is connected.Discharge pipe 25 extends downwards from the outlet 221 of the bottom 22 being arranged at the 2nd retention basin 20.The end in the downstream of discharge pipe 25 is connected to injection moulding machine 2.Again, discharge pipe 25 is arranged the dump valve 26 of the mobile handoff opening and closing outlet 221 by means of valve body 261.Valve body 261 can close outlet 221 state and to be arranged at discharge pipe 25 sidepiece keep out of the way space 262 to keep out of the way with the state that outlet 221 is opened between to retreat movement.
Carrier pipe 30 is the pipe arrangements carrying resin particle 9 between the 1st retention basin 10 and the 2nd retention basin 20.The end of the throughput direction upstream side of carrier pipe 30 is connected to the outlet 113 arranged in the bottom 112 of the 1st retention basin 10.On the other hand, the end of the conveyance direction downstream side of carrier pipe 30 is connected to the sidepiece of conveyor hopper 24.That is, the 1st retention basin 10 and the 2nd retention basin 20 utilize carrier pipe 30 and conveyor hopper 24 to be connected.The resin particle 9 of discharging from the 1st retention basin 10 is transferred the airflow feeding of generation in pipe 30 toward conveyor hopper 24.
Conveying circulation line 40 to the air-flow of conveyor hopper 24 side flowing, makes the piping system that gas circulates in order to occur in carrier pipe 30.One end of conveying circulation line 40 is connected to the top of conveyor hopper 24.Again, the other end of conveying circulation line 40 is connected to carrier pipe 30.At the conveying connecting portion of circulation line 40 with conveyor hopper 24, perforated metal plate 241 is set.Perforated metal plate 241 has and can limit resin particle 9 and pass through, and allows multiple Consistent through holes that air passes through simultaneously.Again, the conveying midway, path of circulation line 40, arranges filter 41 and conveyance drum blower fan 42.
When making 42 action of conveyance drum blower fan, as shown in arrow A in Fig. 11, in conveying circulation line 40, there is the air-flow flowing to carrier pipe 30 from conveyor hopper 24.So, as shown in arrow A in Fig. 12, there is the air-flow flowed from the 1st retention basin 10 to conveyor hopper 24 in carrier pipe 30 inside.From the 1st retention basin 10 discharge resin particle 9 by this airflow feeding toward conveyor hopper 24.
Further, the fine dust being inhaled into conveying circulation line 40 from conveyor hopper 24 trap by filter 41.Again, resin particle 9 blocked from conveyor hopper 24 to the movement of conveying circulation line 40 metallic plate 241 that is perforated.Therefore, resin particle 9 can not flow into conveying circulation line 40 side, and stores in conveyor hopper 24.
Resin particle 9 makes pneumatic conveying stop after storing in conveyor hopper 24, during 231 automatic opening of input port, is dropped in the 2nd retention basin 20 by resin particle 9 from conveyor hopper 24 by input port 231.By repeatedly carrying out, from the 1st retention basin 10 to the pneumatic conveying of resin particle 9 of the 2nd retention basin 20 and opening of input port 231, resin particle 9 being stored in the 2nd retention basin 20 like this.
Oven dry circulation line 50 is the piping systems in order to provide the hot blast of oven dry to make gas circulate in the 2nd retention basin 20.The oven dry suction port 232 that one end of circulation line 50 and the top plate portion 23 of the 2nd retention basin 20 are arranged is connected.The sidewall 21 of through 2nd retention basin 20 in the other end of oven dry circulation line 50, is connected to the blow-off outlet 54 in the 2nd retention basin 20 inside configuration.Filter 51 is set in the midway in the path of oven dry circulation line 50 again, dries air blast 52 and heater 53.
Once make oven dry air blast 52 action, as shown in arrow A in Fig. 13, there is the air-flow flowed from suction port 232 to blow-off outlet 54 at oven dry circulation line 50.The fine dust sucking oven dry circulation line 50 from the 2nd retention basin 20 trap by filter 51.Again, hot blast is become by the gas of filter 51 owing to being subject to the heating of heater 53.Then, this hot blast blows to the 2nd retention basin 20 inside from blow-off outlet 54.Further, between filter 51 and heater 53, the absorber of the moisture comprised in adsorbed gas also can be set.
From the gap of the resin particle 9 that the hot blast of blow-off outlet 54 blowout is stored by the 2nd retention basin 20 inside, spread in the 2nd retention basin 20.By means of this, heat resin particle 9, moisture evaporates from resin particle 9, and resin particle 9 is dried.That is, in the 2nd retention basin 20, the gas of diffusion absorbs moisture from resin particle 9.And the gas with the moisture absorption of the identical amount of hot blast blown out from blow-off outlet 54 is inhaled past oven dry circulation line 50 from the 2nd retention basin 20 once again by suction port 232.Like this, in this embodiment, oven dry circulation line 50 plays the effect of the oven dry means of the resin particle 9 in oven dry the 2nd retention basin 20.
1st gas introduction part 60 is the mechanisms importing inert nitrogen gas in the 1st retention basin 10.1st gas introduction part 60 has nitrogen gas generator 61 and gas imports pipe arrangement 62.The end that gas imports the upstream side of pipe arrangement 62 is connected to nitrogen gas generator 61.The end that gas imports the downstream of pipe arrangement 62 is connected to the introducing port 114 arranged at the sidewall 111 of retention basin main body 11.The midway importing again the path of pipe arrangement 62 at gas arranges open and close valve 63.Open and close valve 63 can not also be set, and replace flow control valve is set.
There is the nitrogen of the oven dry larger than the air pressure in external pressure and the 1st retention basin 10 in nitrogen gas generator 61.Therefore, once open open and close valve 63, just import by gas the nitrogen that pipe arrangement 62 provides malleation in the 1st retention basin 10 from nitrogen gas generator 61.That is, nitrogen Strong system is imported in the 1st retention basin 10.So, by means of this nitrogen, make air pressure in the 1st retention basin 10 higher than external pressure.Thus, extraneous gas can be suppressed to invade the situation of the 1st retention basin 10 inside.Consequently, the situation of resin particle 9 moisture absorption stored in the 1st retention basin 10 can be suppressed.
Particularly, in this powder particle processing device 1, the end that gas imports the downstream of pipe arrangement 62 is not be connected to cap 12, but is connected to retention basin main body 11.Therefore, even under the state of taking off the cap 12 of the 1st retention basin 10, also nitrogen can be imported pipe arrangement 62 from gas and import retention basin main body 11 inside.Such as, when resin particle 9 is dropped into retention basin main body 11, can continue that nitrogen is imported pipe arrangement 62 from gas and import retention basin main body 11 inside.By means of this, when can suppress to drop into resin particle 9, extraneous gas invades the generation of the situation in retention basin main body 11 by opening 110.Thus, the generation of the situation of resin particle 9 moisture absorption when can suppress to drop into material.
Again, when carrier pipe 30 utilizes pneumatic convey resin particle 9, a part for the gas in the 1st retention basin 10 is inhaled toward carrier pipe 30.Therefore, the pressure in the 1st retention basin 10 is easily on the low side.But this powder particle processing device 1, by being imported in the 1st retention basin 10 by nitrogen, can suppress the pressure drop in the 1st retention basin 10.Thus, can, while utilizing pneumatic convey resin particle 9, suppress extraneous gas to invade in the 1st retention basin 10.Consequently, the moisture absorption of the resin particle 9 stored in the 1st retention basin 10 can be suppressed better.
2nd gas introduction part 70 is the mechanisms imported by inert nitrogen gas in discharge pipe 25.2nd gas introduction part 70 has nitrogen gas generator 71 and gas imports pipe arrangement 72.The end that gas imports the upstream side of pipe arrangement 72 is connected to nitrogen gas generator 71.Gas imports the end in the downstream of pipe arrangement 72, and what the sidepiece being connected to discharge pipe 25 was arranged keeps out of the way space 262.Import again the midway, path of pipe arrangement 72 at gas, open and close valve 73 is set.Open and close valve 73 can not also be set, and replace flow control valve is set.
There is the nitrogen of the oven dry larger than the air pressure in external pressure and discharge pipe 25 in nitrogen gas generator 71.Therefore, once open open and close valve 73, nitrogen gas generator 71 just imports by gas pipe arrangement 72 to provide nitrogen from malleation to the inside of discharge pipe 25.That is, force nitrogen to be imported discharge pipe 25 inner.So, by means of this nitrogen, the air pressure in discharge pipe 25 is higher than the pressure in external pressure and injection moulding machine 2.Thus, gas in injection moulding machine 2 can be suppressed to discharge pipe 25 reverse flow.Again, resin particle 9 moisture absorption and oxidation in discharge pipe 25 of having dried in the 2nd retention basin 20 can be suppressed.
Particularly, the temperature in discharge pipe 25 is lower than the temperature obtained in the 2nd retention basin 20 of hot blast feeding.Therefore, the resin particle 9 of discharging from the 2nd retention basin 20 to discharge pipe 25 is easily in simultaneously stability moisture and other gas componants of temperature reduction.But this powder particle processing device 1, by the nitrogen of drying is imported discharge pipe 25 from the 2nd gas introduction part 70, makes the humidity in discharge pipe 25 and oxygen concentration reduce.By means of this, moisture absorption and the oxidation of the resin particle 9 after drying and processing can be suppressed.
In the powder particle processing device 1 of this embodiment, roughly form sealing system through carrier pipe 30, conveyor hopper 24 and the 2nd retention basin 20 to the transport path of the resin particle 9 of discharge pipe 25 from the 1st retention basin 10.Once continue to import nitrogen from the 1st gas introduction part 60, this nitrogen, while filling the 1st retention basin 10 inside, flows into carrier pipe 30, circulates with in circulation line 40 at carrier pipe 30 and conveying.Again, once continue to import nitrogen from the 2nd gas introduction part 70, this nitrogen, while filling discharge pipe 25 inside, flows into the 2nd retention basin 20, circulates with in circulation line 50 at the 2nd retention basin 20 and oven dry.Consequently, be full of by the nitrogen of malleation from the 1st retention basin 10 through carrier pipe 30, conveyor hopper 24 and the 2nd retention basin 20 whole piece transport path to the resin particle 9 of discharge pipe 25.By means of this, the impacts such as the humidity and temperature of extraneous gas can be suppressed, as whole device, moisture content and the amount of oxidation of resin particle 9 can be suppressed.
Fig. 2 is the block diagram of the structure of the control system representing powder particle processing device 1.Control part 80 is the means of each several part of powder particle processing device 1 being carried out to action control.As shown in Figure 2, control part 80 respectively with above-mentioned dump valve 26, conveyance drum blower fan 42, dry air blast 52, heater 53, open and close valve 63 and open and close valve 73 electric power and be connected.Control part 80 can utilize the computer with arithmetic processing section and memories etc. such as CPU to form, or electronic circuit also can be utilized to form.Control part 80, according to the program preset and the signal from outside input, carries out action control to above-mentioned each portion.By means of this, the resin particle 9 in powder particle processing device 1 is processed.
Again, open and close valve 63 and open and close valve 73, except being connected with electric power, are also driven as driving force by air equal energy source.Like this, when the power supply of powder particle processing device 1 is in closed condition or by when having the factory of powder particle processing device 1 to be in power down mode, also can continues to import inert nitrogen gas to the 1st retention basin 10 and from the 2nd gas introduction part 70 to discharge pipe 25 from the 1st gas introduction part 60.
In addition, dump valve 26, open and close valve 63 and open and close valve 73 also can not be connected with control part 80, and carry out manual opening and closing operations by user.
The action > of < 2. powder particle processing device
Then the process of resin particle 9 in above-mentioned powder particle processing device 1 is described below.Fig. 3 is the flow chart of one of process representing that powder particle processing device 1 carries out example.
In this powder particle processing device 1, when resin particle 9 is processed, first, from the 1st retention basin 10 through whole piece transport path filling nitrogen (step S1) to the resin particle 9 of discharge pipe 25 of carrier pipe 30, conveyor hopper 24 and the 2nd retention basin 20.Specifically, open open and close valve 63, in the 1st retention basin 10, import nitrogen from the 1st gas introduction part 60, open open and close valve 73 simultaneously, in discharge pipe 25, import nitrogen from the 2nd gas introduction part 70.By means of this, with the air in nitrogen displacement the 1st retention basin 10, carrier pipe 30, conveyor hopper 24, the 2nd retention basin 20 and discharge pipe 25.
Then, in the 1st retention basin 10, resin particle 9 (step S2) is dropped into.That is, take off the cap 12 of the 1st retention basin 10, in retention basin main body 11, drop into resin particle 9 by the opening 110 of retention basin main body 11.At this moment, the 1st gas introduction part 60 continues to provide nitrogen.Therefore, the situation that extraneous gas is mixed in retention basin main body 11 is inhibited.Again, under the resin particle 9 dropped in retention basin 10 is placed in the nitrogen atmosphere of drying immediately.By means of this, the moisture absorption situation of resin particle 9 is inhibited.
Once the input of resin particle 9 completes, cover cap 12 once again, close the opening 110 of retention basin main body 11.Then, conveyance drum blower fan 42 is worked, in conveying circulation line 40 and carrier pipe 30, stream of nitrogen gas occurs.So, the resin particle 9 of discharging from the 1st retention basin 10 bottom passes through carrier pipe 30 by airflow feeding toward conveyor hopper 24 (step S3).At this moment, carrier pipe 30 inside is full of by the nitrogen of malleation.Therefore, it is possible to resin particle 9 moisture absorption in suppression process of air delivery.
The resin particle 9 being reserving at conveyor hopper 24 is put in the 2nd retention basin 20 when the input port 231 of the 2nd retention basin 20 is opened.Then, the drying and processing (step S4) of resin particle 9 is carried out in the 2nd retention basin 20 inside.Specifically, by making oven dry air blast 52 and heater 53 work, nitrogen hot blast is provided from blow-off outlet 54 to the 2nd retention basin 20 inside.By means of this, moisture evaporates from resin particle 9, and the moisture content of resin particle 9 drops to desired value.
The drying and processing of stipulated time, once terminate, just opens dump valve 26.By means of this, discharge resin particle 9 (step S5) by discharge pipe 25 to injection moulding machine 2 from the 2nd retention basin 20.At this moment, the temperature of the resin particle 9 in discharge pipe 25 is than low when step S4 is dried.But, owing to importing nitrogen from the 2nd gas introduction part 70 to discharge pipe 25, discharge pipe 25 inside be full of by nitrogen.Therefore, it is possible to suppress the situation of the resin particle 9 after drying adsorption moisture and other gas componants once again.
Moreover, as to Fig. 3 description, by the act of whole piece transport path filling nitrogen (step S1), also can be used for dropping in the 1st retention basin 10 resin particle 9 (step S2), the resin particle 9 of discharging from the 1st retention basin 10 bottom by carrier pipe 30 by airflow feeding toward conveyor hopper 24 (step S3), carry out in the 2nd retention basin 20 inside resin particle 9 drying and processing (step S4) and discharge resin particle 9 (step S5) by discharge pipe 25 to injection moulding machine 2 from the 2nd retention basin 20.Also can be used for discharging resin particle 9 (step S5) complete after by discharge pipe 25 to injection moulding machine 2 from the 2nd retention basin 20.
As mentioned above, this powder particle processing device 1, by providing nitrogen to the 1st retention basin 10, suppresses the moisture absorption of resin particle 9.That is, preparation property management is implemented to the initial aqueous rate of the resin particle 9 before oven dry.Thereafter, by drying resin particle 9 in the 2nd retention basin 20, the moisture content of resin particle 9 is made to be reduced to desired value.By means of this, suppress the impact of the humidity and temperature of extraneous gas, high accuracy management is carried out to the moisture content of resin particle 9.The oxidation of resin particle 9 can be suppressed again.
Fig. 4 is the curve map of the change case of the moisture content of the resin particle 9 represented when the 2nd retention basin 20 carries out drying and processing.As shown in Figure 4, once carry out drying and processing in the 2nd retention basin 20, along with the past of drying time, the moisture content of resin particle 9 declined.Thus, as shown in the curve C 1, C2 in Fig. 4, for the resin particle 9 that initial aqueous rate is inhibited, it can be made to be reduced to moisture content P as target.But, as shown in the curve C 3 in Fig. 4, when initial aqueous rate is too high, it sometimes can not be made to reach target moisture content P, or need the drying time extremely grown.
In this, the powder particle processing device 1 of this embodiment, as mentioned above, can suppress the moisture absorption of the resin particle 9 before drying at the 1st retention basin 10.By means of this, the initial aqueous rate of resin particle 9 can be suppressed.Thus, as shown in the curve C 1, C2 in Fig. 4, the moisture content of resin particle 9 stably can be reduced to target moisture content P.That is, owing to can dry resin particle 9 in always stable initial aqueous rate, the moisture content stabilisation reached after oven dry can be made.
< 3. variation >
Above the present invention one embodiment is illustrated, but the invention is not restricted to above-mentioned embodiment.
Fig. 5 represents the formation of the powder particle processing device 1 of a variation.In the example of Fig. 5, the end in the downstream of the gas importing pipe arrangement 62 of the 1st gas introduction part 60 is not be connected to the 1st retention basin 10, but is connected to conveying circulation line 40.Even such structure, if import from gas the nitrogen that pipe arrangement 62 provides malleation, then by conveying circulation line 40, carrier pipe 30 and outlet 113, inside nitrogen being imported the 1st retention basin 10 can be forced.Thus, the situation in extraneous gas intrusion the 1st retention basin 10 can be suppressed.
Further, the end in the downstream of gas importing pipe arrangement 62 can be connected to other positions on conveying circulation line 40, or also can be connected to carrier pipe 30.
Fig. 6 represents the formation of the powder particle processing device 1 of other variation.In the example of Fig. 6, conveying circulation line 40 is removed, above the 2nd retention basin 20, configure the 1st retention basin 10.And outlet 113 and the input port 231 of the 2nd retention basin 20 of the 1st retention basin 10 utilize the carrier pipe 30 of downward-extension on plumb line direction to be connected.The dump valve 13 that can switch the opening and closing of outlet 113 is set again on carrier pipe 30.When carrying resin particle 9 from the 1st retention basin 10 to the 2nd retention basin 20, dump valve 13 is worked, opens outlet 113.By means of this, in carrier pipe 30, resin particle 9 is made freely to fall.
Even such structure, as long as force the inside to the 1st retention basin 10 to import the nitrogen of malleation from the 1st gas introduction part 60, extraneous gas just can be suppressed to invade in the 1st retention basin 10.Thus the moisture absorption of the resin particle 9 in the 1st retention basin 10 can be suppressed.
Fig. 7 represents the formation of the powder particle processing device 1 of other variation.In the example of Fig. 7, identical with the example of Fig. 6, above the 2nd retention basin 20, connect the 1st retention basin 10 by carrier pipe 30.Again, in the example of fig. 7, the gas of the 1st gas introduction part 60 imports the end in the downstream of pipe arrangement 62, is not connected, and is connected with carrier pipe 30 with the 1st retention basin 10.Even such structure, as long as also import from gas the nitrogen that pipe arrangement 62 provides malleation, just by force nitrogen can be imported the 1st retention basin 10 by carrier pipe 30 and outlet 113 inner.Thus, the situation in extraneous gas intrusion the 1st retention basin 10 can be suppressed.
Again, in above-mentioned embodiment, import nitrogen from the 1st gas introduction part 60 and the 2nd gas introduction part 70, but also can not input nitrogen, and replace other inert gases such as importing argon gas.1st gas introduction part and the 2nd gas introduction part can import inert gas from the inert gas generator being arranged at powder particle processing device outside again.
Again, powder particle processing device of the present invention also can using the bulk material beyond resin particle as handling object.
Again, the structure in the thin portion of powder particle processing device also can be different from the structure shown in Fig. 1, Fig. 5, Fig. 6 or Fig. 7 of the application.
Further, each key element occurred in above-mentioned embodiment and variation etc. also can be appropriately combined in the scope do not conflicted.
Claims (9)
1. a powder particle processing device, is characterized in that, possesses
Storage bulk material the 1st retention basin,
Be positioned at the conveyance direction downstream side of described 1st retention basin, the 2nd retention basin that bulk material is dried,
Connect the carrier pipe of described 1st retention basin and the 2nd retention basin,
And directly or by described carrier pipe by the 1st gas introduction part in described 1st retention basin of inert gas Strong system importing.
2. powder particle processing device according to claim 1, is characterized in that,
Utilize the inert gas imported from described 1st gas introduction part, make air pressure in described 1st retention basin higher than external pressure.
3. powder particle processing device according to claims 1 to 2, is characterized in that,
Utilize the inert gas imported from described 1st gas introduction part, make air pressure in described carrier pipe higher than external pressure.
4. the powder particle processing device according to any one in claims 1 to 3, is characterized in that,
Also there is the circulation line being connected to described carrier pipe,
The inert gas imported from described 1st gas introduction part can circulate described circulation line.
5. the powder particle processing device according to any one in Claims 1 to 4, is characterized in that,
Also possess and discharge the discharge pipe of bulk material from described 2nd retention basin and in described discharge pipe, import the 2nd gas introduction part of inert gas.
6. the powder particle processing device according to any one in Claims 1 to 5, is characterized in that,
Described 1st retention basin possesses top and has there is the retention basin main body of bottom tube-like and closes the cap of described opening of described retention basin main body of opening,
Described 1st gas introduction part has the gas be connected with described retention basin main body and imports pipe arrangement.
7. the powder particle processing device according to any one in claim 1 ~ 6, is characterized in that,
Also there are in described carrier pipe the air-flow generation means that the air-flow flowing to above-mentioned 2nd retention basin from above-mentioned 1st retention basin occurs.
8. the powder particle processing device according to any one in claim 1 ~ 7, is characterized in that,
The conveying making bulk material in described carrier pipe start to carry starts means.
Described 1st gas introduction part, can start to import inert gas according to the instruction of described conveying beginning means before conveying bulk material.
9. the powder particle processing device according to any one in claim 1 ~ 8, is characterized in that,
Described 1st retention basin, for storing the retention basin of bulk material at first in described powder particle processing device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-161395 | 2013-08-02 | ||
| JP2013161395A JP2015030191A (en) | 2013-08-02 | 2013-08-02 | Treatment apparatus of powder and granular material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104339471A true CN104339471A (en) | 2015-02-11 |
| CN104339471B 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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| Country | Link |
|---|---|
| JP (1) | JP2015030191A (en) |
| KR (1) | KR20150016076A (en) |
| CN (1) | CN104339471B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108007121A (en) * | 2016-10-28 | 2018-05-08 | 株式会社川田 | Drying device |
| CN110341119A (en) * | 2019-06-28 | 2019-10-18 | 温州市鸿燊自动化有限公司 | A kind of energy conservation and environmental protection suction siccative all-in-one machine |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP7132592B2 (en) * | 2018-04-05 | 2022-09-07 | 株式会社松井製作所 | Drying system and drying method |
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- 2013-08-02 JP JP2013161395A patent/JP2015030191A/en active Pending
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| CN108007121B (en) * | 2016-10-28 | 2020-12-08 | 株式会社川田 | Drying device |
| 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 |
| CN110341119A (en) * | 2019-06-28 | 2019-10-18 | 温州市鸿燊自动化有限公司 | A kind of energy conservation and environmental protection suction siccative all-in-one machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104339471B (en) | 2019-06-14 |
| JP2015030191A (en) | 2015-02-16 |
| KR20150016076A (en) | 2015-02-11 |
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