CN209504870U - A kind of pressure system of parallel double-screw extruder - Google Patents
A kind of pressure system of parallel double-screw extruder Download PDFInfo
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- CN209504870U CN209504870U CN201920093140.6U CN201920093140U CN209504870U CN 209504870 U CN209504870 U CN 209504870U CN 201920093140 U CN201920093140 U CN 201920093140U CN 209504870 U CN209504870 U CN 209504870U
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Abstract
The utility model relates to a kind of pressure systems of parallel double-screw extruder, including weighing device, extruder ontology, the first net-changing device, the second net-changing device, the first Melt Pump and the second Melt Pump；Weighing device is set on the batch feeding end of extruder ontology；The first net-changing device, the first Melt Pump, the second net-changing device and the second Melt Pump are set gradually along material extrusion direction between extruder ontology and die assembly.When this pressure system works, it ensure that the material in the unit time into parallel double-screw extruder is consistent by weighing device, keep the material into parallel double-screw extruder controllable, i.e. when the material of parallel double-screw extruder input is constant within the unit time, its extrusion output within the unit time is also constant, it, can be so that extrusion pressure be stablized using the pressure stabilization function of two-stage Melt Pump；This pressure system can guarantee that the load of die assembly and die pressure P5 are stablized.
Description
Technical field
The utility model relates to a kind of parallel double-screw extruder, the pressure system of specifically a kind of parallel double-screw extruder
System.
Background technique
Current parallel double-screw generally all haves the shortcomings that extrusion pressure is unstable, so existing flat double extruders one
As apply and be granulated etc. on the not high production line of some pairs of pressure requirements, but flat double extruder plasticizing effects are good, and extrusion output is big etc.
Advantage cannot be fully played and be applied；To solve the above problems, occurring increasing a melt in flat double extruders in the market
The mode of pump stablizes final output pressure, but effect is all unobvious, and pressure still fluctuates larger, cannot apply to pressure
On more demanding production line.
Therefore, it is necessary to be further improved.
Utility model content
The purpose of the utility model is to overcome above-mentioned the shortcomings of the prior art, and it is crowded to provide a kind of parallel double-screw
The pressure system of machine out makes parallel double extruders have the advantages that high plasticizing, high production capacity, pressure stability is high, to promote production
The market value of product.
Purpose of the utility model is realized as follows:
A kind of pressure system of parallel double-screw extruder, including extruder ontology and it is set to extruder ontology and mould
Has the net-changing device group between component；It is described to change it is characterized by also including weighing device, the first Melt Pump and the second Melt Pump
Wire stitcher group includes the first net-changing device and the second net-changing device；The weighing device is set on the batch feeding end of extruder ontology；It is described
Between extruder ontology and die assembly along material extrusion direction set gradually the first net-changing device, the first Melt Pump, the second net-changing device and
Second Melt Pump.
The feed end of first Melt Pump is correspondingly arranged on for detecting the second pressure sensor for pumping preceding pressure P2；Institute
The feed end for stating the second Melt Pump is correspondingly arranged on for detecting the 4th pressure sensor for pumping preceding pressure P4.
The feed end of first net-changing device is correspondingly arranged on for detecting the first pressure sensor for netting preceding pressure P1；Institute
The feed end for stating the second net-changing device is correspondingly arranged on for detecting the third pressure sensor for netting preceding pressure P3.
The feed end of the die assembly is correspondingly arranged on the 5th pressure sensor for detecting die pressure P5.
The control method of the pressure system of above-mentioned parallel double-screw extruder includes following rate-determining steps
A. consistent by entering the material of extruder ontology in the weighing device guarantor unit time, make the object into extruder
Material is controllable；
B. when line speed increases or mould discharging amount increase in demand, the speed of the second Melt Pump is according to linear velocity need
The amount of asking and increase accordingly, make die pressure P5 increase, to meet production requirement；
C. when die pressure P5 increases, pressure P4 reduces before pumping, when pressure P4 is reduced to a certain amount of before pumping, the first melt
Pump does a pressure closed loop control according to the pressure of pressure P4 before pumping, stablizes pressure P4 before pumping to change speed, and then ensure
The stabilization of die pressure P5.
Before executing the pressure closed loop control, weighing device is according to the revolving speed of the second Melt Pump and every turn of output meter pumped
Material needed for calculating, and then adjust the discharge quantity of extruder ontology and pressure P2 is relatively stable before ensuring to pump.
The beneficial effects of the utility model are as follows:
Compared with the pressure system of existing parallel double-screw extruder, the pressure system of the utility model is in parallel double-screw
The upstream of extruder increases weighing device, increases two Melt Pumps (the first Melt Pump and the second Melt Pump) in downstream；Work
When making, it ensure that the material in the unit time into parallel double-screw extruder is consistent by weighing device, make to enter flat
The material of row double screw extruder is controllable, i.e., when the material of parallel double-screw extruder input is constant within the unit time, puts down
Extrusion output of the row double screw extruder within the unit time be also it is constant, can thus make parallel double-screw extruder squeeze
Pressure is relatively stable out, further and stable in the meeting of pressure after the filter；This pressure system and its control method
The load and die pressure P5 that can guarantee die assembly are stablized.And two Melt Pumps mainly play it is quickly same with subsidiary engine equipment
The effect of step and pressurization and pressure stabilizing, wherein the effect of the second Melt Pump is specifically to adjust die pressure according to the speed of subsidiary engine
P5, i.e., according to the synchronous supply extruded stock of the demand of production to die assembly, the effect of the first Melt Pump is to guarantee the second Melt Pump
Pump before pressure P4 stablize, i.e., when the second Melt Pump changes according to line speed, when pressure P4 is decreased or increased before pumping it,
First Melt Pump can carry out pressure closed loop control according to the fluctuation of pressure P4 before the pump of the second Melt Pump, adjust revolving speed to reach
Purpose stablizes pressure P4 before the pump of the second Melt Pump.
Detailed description of the invention
Fig. 1 is the structure diagram of an embodiment of the present invention.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and embodiments.
Referring to Fig. 1, the pressure system of this parallel double-screw extruder, including weighing device 1, extruder ontology 2 and setting
The first net-changing device 3, the second net-changing device 5, the first Melt Pump 4 and the second Melt Pump between extruder ontology 2 and die assembly 7
6；Weighing device 1 is set on the batch feeding end of extruder ontology 2；Between extruder ontology 2 and die assembly 7 along material extrusion direction according to
Secondary setting the first net-changing device 3, the first Melt Pump 4, the second net-changing device 5 and the second Melt Pump 6.This structure is in extruder ontology 2
Upstream increases weighing device 1, increases the first Melt Pump 4 and the second Melt Pump 6 in downstream；When work, pass through weighing device 1
It ensure that the material for entering extruder ontology 2 in the unit time is consistent, keep the material into extruder ontology 2 controllable, i.e.,
When the material that extruder ontology 2 inputs is constant within the unit time, extrusion output of the extruder ontology 2 within the unit time is also
Constant；Thus the extrusion pressure of parallel double-screw extruder can be made relatively stable, in pressure after the filter
It can be further and stable；This pressure system can be such that the load of die assembly 7 and die pressure P5 stablizes.
Further, the feed end of the first Melt Pump 4 is correspondingly arranged on for detecting the second pressure biography for pumping preceding pressure P2
Sensor 9；The feed end of second Melt Pump 6 is correspondingly arranged on for detecting the 4th pressure sensor 11 for pumping preceding pressure P4；First
The feed end of net-changing device 3 is correspondingly arranged on for detecting the first pressure sensor 8 for netting preceding pressure P1；Second net-changing device 5 into
Material end is correspondingly arranged on for detecting the third pressure sensor 10 for netting preceding pressure P3；The feed end of die assembly 7 is correspondingly arranged
There is the 5th pressure sensor 12 for detecting die pressure P5.
The control method of the pressure system of above-mentioned parallel double-screw extruder, including following rate-determining steps
A. consistent by entering the material of extruder ontology 2 in 1 guarantor unit's time of weighing device, make into extruder
Material is controllable；
B. when line speed increases or mould discharging amount increase in demand, the speed of the second Melt Pump 6 is according to linear velocity
Demand and increase accordingly (i.e. synchronous with the linear velocity of subsidiary engine equipment), make die pressure P5 increase, to meet production requirement；
C. when die pressure P5 increases, pressure P4 reduces before pumping；When pressure P4 is reduced to a certain amount of before pumping, in order to guarantee
The stability of die pressure P5, the first Melt Pump 4 is done a pressure closed loop according to the pressure of pressure P4 before pumping and is controlled, to change speed
Degree stablizes pressure P4 before pumping, and then ensures the stabilization of die pressure P5.
Further, the premise of the pressure closed loop control in execution is that the material before the first Melt Pump 4 pump is enough, before pump
Pressure P2 is relatively stable；In order to meet the condition for executing pressure closed loop control, weighing device 1 turns according to the second Melt Pump 6
Fast and every turn of pump output quantity calculates required material, and then adjusts the discharge quantity of extruder ontology 2 and ensure to pump preceding pressure
P2 is relatively stable.
The above-mentioned preferred embodiment for the utility model, has been shown and described the basic principles and main features of the utility model
And the advantages of the utility model.Those skilled in the art should be recognized that the present utility model is not limited to the above embodiments, on
It states and only illustrates the principles of the present invention described in embodiment and specification, do not departing from the spirit and scope of the utility model
Under the premise of the utility model also has various changes and improvements, these changes and improvements both fall within claimed it is practical new
Within the scope of type.The utility model requires protection scope is defined by appended claims and its equivalent.
Claims (4)
1. a kind of pressure system of parallel double-screw extruder, including extruder ontology (2) and it is set to extruder ontology (2)
With the net-changing device group between die assembly (7)；It is characterized by also including weighing devices (1), the first Melt Pump (4) and second
Melt Pump (6), the net-changing device group include the first net-changing device (3) and the second net-changing device (5)；The weighing device (1) is set to
On the batch feeding end of extruder ontology (2)；It is set gradually between the extruder ontology (2) and die assembly (7) along material extrusion direction
First net-changing device (3), the first Melt Pump (4), the second net-changing device (5) and the second Melt Pump (6).
2. the pressure system of parallel double-screw extruder according to claim 1, it is characterised in that: first Melt Pump
(4) feed end is correspondingly arranged on for detecting the second pressure sensor (9) for pumping preceding pressure P2；Second Melt Pump (6)
Feed end be correspondingly arranged on for detect pump before pressure P4 the 4th pressure sensor (11).
3. the pressure system of parallel double-screw extruder according to claim 1, it is characterised in that: first net-changing device
(3) feed end is correspondingly arranged on for detecting the first pressure sensor (8) for netting preceding pressure P1；Second net-changing device (5)
Feed end be correspondingly arranged on for detect net before pressure P3 third pressure sensor (10).
4. the pressure system of parallel double-screw extruder according to claim 1, it is characterised in that: the die assembly
(7) feed end is correspondingly arranged on the 5th pressure sensor (12) for detecting die pressure P5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920093140.6U CN209504870U (en) | 2019-01-18 | 2019-01-18 | A kind of pressure system of parallel double-screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920093140.6U CN209504870U (en) | 2019-01-18 | 2019-01-18 | A kind of pressure system of parallel double-screw extruder |
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| CN209504870U true CN209504870U (en) | 2019-10-18 |
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ID=68201502
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| CN201920093140.6U Active CN209504870U (en) | 2019-01-18 | 2019-01-18 | A kind of pressure system of parallel double-screw extruder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109648823A (en) * | 2019-01-18 | 2019-04-19 | 广东宝路盛精密机械有限公司 | A kind of pressure system and its control method of parallel double-screw extruder |
| CN111515700A (en) * | 2020-04-29 | 2020-08-11 | 安徽万朗磁塑股份有限公司 | Door strip of paper used for sealing processing production water line |
| CN111745934A (en) * | 2020-06-28 | 2020-10-09 | 广东联塑科技实业有限公司 | Mould for producing thick-wall pipe with uniform wall thickness |
-
2019
- 2019-01-18 CN CN201920093140.6U patent/CN209504870U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109648823A (en) * | 2019-01-18 | 2019-04-19 | 广东宝路盛精密机械有限公司 | A kind of pressure system and its control method of parallel double-screw extruder |
| CN111515700A (en) * | 2020-04-29 | 2020-08-11 | 安徽万朗磁塑股份有限公司 | Door strip of paper used for sealing processing production water line |
| CN111515700B (en) * | 2020-04-29 | 2022-03-15 | 安徽万朗磁塑股份有限公司 | Door strip of paper used for sealing processing production water line |
| CN111745934A (en) * | 2020-06-28 | 2020-10-09 | 广东联塑科技实业有限公司 | Mould for producing thick-wall pipe with uniform wall thickness |
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