CN202668959U - Evacuating device used for reaction type twin-screw extruder - Google Patents
Evacuating device used for reaction type twin-screw extruder Download PDFInfo
- Publication number
- CN202668959U CN202668959U CN2012200196831U CN201220019683U CN202668959U CN 202668959 U CN202668959 U CN 202668959U CN 2012200196831 U CN2012200196831 U CN 2012200196831U CN 201220019683 U CN201220019683 U CN 201220019683U CN 202668959 U CN202668959 U CN 202668959U
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- Prior art keywords
- vacuum
- screw extruder
- vacuum chamber
- double screw
- response type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses an evacuating device used for a reaction type twin-screw extruder. The evacuating device comprises a vacuum chamber, a plurality of pipelines and a vacuum pump, wherein the vacuum chamber is connected with the vacuum pump through the pipelines, and the pipelines are in a parallel connection structure. A filter screen used for preventing solid bodies entering the vacuum pump is arranged between each pipeline and the vacuum pump. A hollow inserting pipe used for communication of the vacuum chamber and the reaction type twin-screw extruder is arranged on the vacuum chamber, one end of the hollow inserting pipe located outside the vacuum chamber can be matched with an exhaust port located on a stop block of the reaction type twin-screw extruder, and the other end of the hollow inserting pipe located inside the vacuum chamber is a protruded inclined port. According to the evacuating device, by means of the arrangement of the plurality of the pipelines, cleaning for vacuum pipelines can be achieved on the condition of uninterrupted vacuum, and a twin-screw extruder is guaranteed to be produced smoothly; and the evacuating device has good backflow-preventing and blocking-preventing effects, and is convenient to operate. When the evacuating device is in use, what needed is just closing of the pipeline needing washing and opening of other pipelines.
Description
Technical field
The utility model relates to a kind of vacuum plant, particularly a kind of response type double screw extruder vacuum extractor.
Background technology
Double screw extruder is polymer modification processing common equipment, now has been widely used in blend, filling and the enhancing modification of polymer, also is useful on special reactivity and extrudes modification.Through the double screw extruder of high temperature extrusion the time, the polymer raw material that is used for modification all will occur in various degree decomposition, separate out and the phenomenon that gasifies, form the admixture of gas of a large amount of lower-molecular substances.For the response type extruder, usually can use a large amount of low molecular raw materials especially, and reaction is incomplete often, the low residual ubiquity of molecular raw material.These lower-molecular substances such as untimely discharge remain in the product, then easily cause the mechanical property of product and hot property to descend, and change color is local hollow, even a series of harmful effects such as ageing-resistant performance degradation.For reducing this type of impact, as far as possible effectively lower-molecular substance is in time discharged, set up one section exhaust barrel of meter at double screw extruder near the position of head, install the sprue with exhaust outlet additional, bottomless visual vacuum chamber of upper cover vacuumizes by vacuum pipe it is removed discharge from the material of melting.
Common double-screw extruder vacuum extractor mainly comprises three parts, visual vacuum chamber, the direct piping with vacuum meter, water-ring vacuum pump now.Remove for a small amount of low-molecular material, this design can realize really, even the lower-molecular substance of gasification is met cold liquefy or solid-state in vacuum line, and can very fast blocking pipeline yet.If but the lower-molecular substance that removes is more, perhaps contain a large amount of easy-curing matter in the lower-molecular substance, very fast blocking pipeline and vacuum meter then can occur, even enter in a large number and affect its normal operation in the water-ring vacuum pump.This phenomenon usually occurs when using the response type double screw extruder to produce continuously.Clear up frequently the vacuum extractor energy that not only expends time in, and usually will interrupt vacuumizing processing, thereby affected the normal production and processing of extruder.In addition, the lower-molecular substance of partial gasification can condense at the vacuum chamber inner surface liquid state of thickness, pools gradually drop after long-time slowly to flow down, even passes back in the exhaust outlet of sprue polluted product.Also not having at present preferably, technical equipment comprehensively solves problems.
Summary of the invention
The shortcoming that the purpose of this utility model is to overcome prior art provides a kind of response type double screw extruder vacuum extractor with not enough.This response type double screw extruder solves in the prior art vacuum extractor with vacuum extractor and removes a large amount of when easily solidifying the low-molecular material of liquefaction, the appearance lower-molecular substance passes back into extruder, vacuum line obstruction, vacuum meter and vavuum pump and can't work, and interrupts vacuumizing problems such as clearing up pipeline.
The purpose of this utility model is achieved through the following technical solutions: a kind of response type double screw extruder vacuum extractor comprises vacuum chamber, some pipelines and vavuum pump;
Vacuum chamber is connected with vavuum pump by pipeline, is parallel-connection structure between the pipeline; Therefore, as long as a pipeline is opened, even if other pipelines carry out cleaning treatment, do not need the operation of break vacuum pump yet;
Be provided with between each bar pipeline and the vavuum pump be used to preventing that solid from entering the filter screen of vavuum pump;
Be provided with on the vacuum chamber for the hollow intubate that is communicated with vacuum chamber and response type double screw extruder, the hollow intubate be positioned at the vacuum chamber outside an end can with the sprue that is positioned at the response type double screw extruder on exhaust outlet agree with, the hollow intubate is positioned at an end of internal vacuum chamber and is the angle of projection, the angle of projection is conducive to prevent from blowing back in the response type double screw extruder at the liquid that vacuum chamber gathers, and has avoided contamination of products;
Described vavuum pump is preferably water ring vacuum pump; More preferably install the water ring vacuum pump of vacuum pump additional; Water ring vacuum pump is simple in structure, easy to maintenance, installs the rate of air sucked in required that can improve behind the vacuum pump under low suction pressure additional, has promoted the efficient of water ring vacuum pump, has strengthened vacuumizing effect;
One end of described some pipelines is aggregated into total port A section, is connected with described vacuum chamber again; The other end is aggregated into total port B section, is connected with described vavuum pump again;
The heating tape is twined in the outside of described total port A section, is used for keeping the temperature of total port A section consistent with vacuum chamber;
Described response type double screw extruder also comprises vacuum meter with vacuum extractor, and vacuum meter is arranged at total port A section;
Described vacuum meter is connected with total port A section by snakelike copper pipe, and the snakelike copper pipe end bore that is connected with total port A section is not less than the snakelike copper pipe end bore that is connected with vacuum meter; The vacuum meter inner chamber is very little with the outside port that is communicated with, if the lower-molecular substance of gasification directly contacts with it, then is easy to condense block ports herein and causes the vacuum meter irregular working; Snakelike copper pipe then makes vacuum meter and vacuum pipe apart from prolongation, the lower-molecular substance of gasification can not arrive vacuum meter and just be pulled away, even condense in the copper pipe end position that is connected with vacuum pipe on a small quantity, good heat insulation effect makes it keep liquid, the snakelike copper pipe end bore that is connected with total port A section is larger, thereby can not stop up copper pipe;
Described pipeline is preferably two, and wherein one is the metal hard tube, and another is metal hose;
Arrange two on the described metal hard tube and be used for the valve that control metal hard tube opens and closes, valve is positioned at the two ends of metal hard tube;
Described metal hard tube consists of by two sections, is respectively soaking zone and cooling section; Between two sections heat insulation layer is set; Soaking zone is near vacuum chamber, and tube wall twines the heating tape, and effect is to keep this section metal hard tube temperature consistent with vacuum chamber; Cooling section is away from vacuum chamber, and tube wall is cooling sandwith layer structure or winding pipe structure for cooling, and effect is the condensation lower-molecular substance;
Several multiple-blade Metallic rod are installed in the described metal hard tube; The multiple-blade Metallic rod is connected with motor, by driven by motor, thus rotation; The effect that is positioned at the multiple-blade Metallic rod of soaking zone is to accelerate gas flow rate, makes from vacuum chamber gas out and arrives fast cooling section; The effect that is positioned at the multiple-blade Metallic rod of cooling section is the lower-molecular substance of condensation cured or liquefaction, makes it to stay the metallic hard pipeline, can not by the filter screen between metallic conduit and the vavuum pump, enter in the vavuum pump;
Described multiple-blade Metallic rod is the bamboo dragonfly shape, and namely the end a Metallic rod connects at least two all-wing aircraft blades;
Described metal hose arranges two and is used for the valve that the control metal hose opens and closes, and valve is positioned at the two ends of metal hose;
The exterior circumferential of described vacuum chamber is twined the zone of constant temperature, and steady temperature can be set as required, guarantees that as far as possible the lower-molecular substance in the vacuum chamber is gaseous state or liquid state;
Described response type double screw extruder needs only the closedown of pipeline with required cleaning with the using method of vacuum extractor, opens other passages and gets final product; Specifically may further comprise the steps:
(1) by being arranged on the valve closing metal hose at metal hose two ends, by being arranged on the valve opening metal hard tube at metal hard tube two ends;
(2) according to the temperature of response type double screw extruder, adjust the temperature of vacuum chamber and metal hard tube soaking zone by the zone of constant temperature; The purpose of adjusting the temperature of vacuum chamber and metal hard tube soaking zone is to guarantee that as far as possible vacuum chamber lower-molecular substance interior and constant temperature zone is gaseous state or liquid state;
(3) cool metal hard tube cooling section is opened motor, starts the multiple-blade Metallic rod;
(4) start vavuum pump; Vacuum chamber is covered on the sprue of response type double screw extruder the exhaust outlet of the hollow intubate docking sprue of vacuum chamber;
(5) when the metal hard tube need to clean, the opening metal flexible pipe is open to the custom and is closed the metal hard tube, takes off the metal hard tube and cleans;
(6) cleaned the metal hard tube, repeating step (1) again after installing; Thereby realized the operation of cleaning vacuum pipe in the situation of break vacuum not.
The utility model has following advantage and effect with respect to prior art: the utility model is owing to arranging more than one pipeline, thereby do not clear up vacuum pipe in the situation of break vacuum, guarantees carrying out smoothly of double screw extruder production; And the optimization by each parts, thereby have good anti-return anti-clogging effect, easy to operate.The utility model can be transformed in the prior art Equipment Foundations, improves vacuumizing effect, cuts the waste.
Description of drawings
Fig. 1 is the structural representation that response type double screw extruder described in the utility model is used vacuum extractor, wherein: 1-response type double screw extruder; The 2-sprue; The 3-vacuum chamber; The snakelike copper pipe that 4-is connected with vacuum meter; The 5-valve; The 6-heating tape; The 7-heat insulation layer; The interlayer of the logical chilled water of 8-; 9-multiple-blade Metallic rod; The 10-motor; The 11-filter screen; The 12-valve; The 13-valve; The 14-filter screen; The 15-valve; 16-installs the water-ring vacuum pump of vacuum pump additional.
Fig. 2 is the top view of multiple-blade Metallic rod.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
The utility model provides a kind of response type double screw extruder vacuum extractor (as shown in Figure 1), and the water-ring vacuum pump 16 that wherein installs vacuum pump additional is connected with vacuum chamber 3 by pipeline.
Pipeline comprises metal hard tube and metal hose; Metal hard tube and metal hose are parallel-connection structure.One end of metal hard tube and an end of metal hose gather the total port A of rear formation section, are connected with vacuum chamber.The heating tape is twined in the outside of total port A section, thereby can by the temperature of the total port A of control heating tape adjustment section, make it consistent with the temperature of vacuum chamber.Vacuum meter is connected with total port A section by snakelike copper pipe 4.The snakelike copper pipe end bore that is connected with total port A section is not less than the snakelike copper pipe end bore that is connected with vacuum meter.The other end of metal hard tube and the other end of metal hose gather the total port B of rear formation section, are connected with vavuum pump.The two ends of metal hard tube are separately installed with valve 5 and valve 12, the two ends of metal hose are separately installed with valve 13 and valve 15, thereby control unlatching or close pipeline by the operation of valve, wherein, valve 5 and valve 15 are near total port A section, and valve 12 and valve 13 are near total port B section.
The metal hard tube is divided into two sections, is soaking zone and cooling section, is heat insulation layer 7 between soaking zone and the cooling section.Soaking zone is in metal hard tube parcel heating tape 6, and soaking zone is connected with total port A section, and the temperature of soaking zone is consistent with the temperature of vacuum chamber; Cooling section is the interlayer 8 that logical chilled water is set at the metal hard tube, and cooling section is connected with total port B section, and the purpose that arranges of cooling section is for the condensation lower-molecular substance.Heat insulation layer 7 separates soaking zone metal hard tube and cooling section metallic hard area under control effectively.Several multiple-blade Metallic rod 9 are equipped with in metallic conduit inside between valve 5 and the valve 12, and multiple-blade Metallic rod 9 is by motor 10 driven rotary.Multiple-blade Metallic rod 9 is bamboo dragonfly shape structure as shown in Figure 2, is that an end of a Metallic rod connects the all-wing aircraft blade that is cross structure.When the lower-molecular substance of vacuum chamber passed through soaking zone, under the effect of multiple-blade Metallic rod 9, Negotiation speed was accelerated, and when arriving cooling section, the effect of multiple-blade Metallic rod is the lower-molecular substance of condensation cured or liquefaction, makes it to stay the metallic hard pipeline.Between valve 12 and the multiple-blade Metallic rod 9 filter screen 11 is housed, thereby prevents that low molecule solid matter from entering in the vavuum pump.
Between the valve 13 and valve 15 of metal hose, near filter screen 14 being housed valve 13 places, effect also is to prevent that low molecule solid matter from entering in the vavuum pump.
The exterior circumferential of vacuum chamber 3 is twined the zone of constant temperature, and steady temperature can be set as required, guarantees that as far as possible the lower-molecular substance in the vacuum chamber is gaseous state or liquid state.Be provided with on the vacuum chamber for the hollow intubate that is communicated with vacuum chamber and response type double screw extruder, the hollow intubate be positioned at the vacuum chamber outside an end can with the sprue 2 that is positioned at response type double screw extruder 1 on exhaust outlet agree with, the hollow intubate is positioned at an end of internal vacuum chamber and is the angle of projection, the angle of projection is conducive to prevent from blowing back in the response type double screw extruder at the liquid that vacuum chamber gathers, and avoids contamination of products.
Use embodiment 1 described response type double screw extruder vacuum extractor, may further comprise the steps:
(1) by being arranged on the valve closing metal hose at metal hose two ends, by being arranged on the valve opening metal hard tube at metal hard tube two ends;
(2) according to the temperature of response type double screw extruder, adjust the temperature of vacuum chamber and metal hard tube soaking zone by the zone of constant temperature; The purpose of adjusting the temperature of vacuum chamber and metal hard tube soaking zone is to guarantee that as far as possible vacuum chamber lower-molecular substance interior and constant temperature zone is gaseous state or liquid state;
(3) cool metal hard tube cooling section is opened motor, starts the multiple-blade Metallic rod;
(4) start vavuum pump; Vacuum chamber is covered on the sprue of response type double screw extruder the exhaust outlet of the hollow intubate docking sprue of vacuum chamber;
(5) when the metal hard tube need to clean, the opening metal flexible pipe is open to the custom and is closed the metal hard tube, takes off the metal hard tube and cleans;
(6) cleaned the metal hard tube, repeating step (1) again after installing; Thereby realized the operation of cleaning vacuum pipe in the situation of break vacuum not.
Above-described embodiment is the better embodiment of the utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (8)
1. response type double screw extruder vacuum extractor is characterized in that: comprise vacuum chamber, some pipelines and vavuum pump; Vacuum chamber is connected with vavuum pump by pipeline, is parallel-connection structure between the pipeline; Be provided with between each bar pipeline and the vavuum pump be used to preventing that solid from entering the filter screen of vavuum pump; Be provided with on the vacuum chamber for the hollow intubate that is communicated with vacuum chamber and response type double screw extruder, the hollow intubate be positioned at the vacuum chamber outside an end can with the sprue that is positioned at the response type double screw extruder on exhaust outlet agree with, the end that the hollow intubate is positioned at internal vacuum chamber is the angle of projection.
2. response type double screw extruder vacuum extractor according to claim 1 is characterized in that:
Described vavuum pump is water ring vacuum pump;
One end of described some pipelines is aggregated into total port A section, is connected with described vacuum chamber again; The other end is aggregated into total port B section, is connected with described vavuum pump again;
The exterior circumferential of described vacuum chamber is twined the zone of constant temperature.
3. response type double screw extruder vacuum extractor according to claim 2 is characterized in that:
Described vavuum pump is the water ring vacuum pump that installs vacuum pump additional;
The heating tape is twined in the outside of described total port A section.
4. response type double screw extruder vacuum extractor according to claim 2, it is characterized in that: described pipeline is two, and wherein one is the metal hard tube, and another is metal hose.
5. response type double screw extruder vacuum extractor according to claim 4 is characterized in that:
Two valves are set on the described metal hard tube, and valve is positioned at the two ends of metal hard tube;
Described metal hard tube consists of by two sections, is respectively soaking zone and cooling section; Between two sections heat insulation layer is set; Soaking zone is near vacuum chamber, and tube wall twines the heating tape; Cooling section is away from vacuum chamber, and tube wall is the cooling sandwith layer structure or twines pipe structure for cooling;
Described metal hose arranges two valves, and valve is positioned at the two ends of metal hose.
6. response type double screw extruder vacuum extractor according to claim 5 is characterized in that: several multiple-blade Metallic rod are installed in the described metal hard tube; The multiple-blade Metallic rod is connected with motor.
7. response type double screw extruder vacuum extractor according to claim 6 is characterized in that: described multiple-blade Metallic rod is that an end of a Metallic rod is connected to form with the all-wing aircraft blade that is cross structure.
8. each described response type double screw extruder vacuum extractor according to claim 1～7, it is characterized in that: described response type double screw extruder also comprises vacuum meter with vacuum extractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200196831U CN202668959U (en) | 2012-01-16 | 2012-01-16 | Evacuating device used for reaction type twin-screw extruder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200196831U CN202668959U (en) | 2012-01-16 | 2012-01-16 | Evacuating device used for reaction type twin-screw extruder |
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| CN202668959U true CN202668959U (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200196831U Expired - Lifetime CN202668959U (en) | 2012-01-16 | 2012-01-16 | Evacuating device used for reaction type twin-screw extruder |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529064A (en) * | 2012-01-16 | 2012-07-04 | 广州市合诚化学有限公司 | Evacuating device for reactive type double-screw extruder and application of evacuating device |
| CN103223721A (en) * | 2013-05-14 | 2013-07-31 | 深圳市虹彩新材料科技有限公司 | Double-screw degassing extruder |
| CN105189073A (en) * | 2013-03-22 | 2015-12-23 | 株式会社日本制钢所 | Continuous extrusion device based on twin screw extruder |
| CN105363038A (en) * | 2014-09-01 | 2016-03-02 | 天津宏顺科生物科技有限公司 | Preparation method of pulullan soft capsule |
-
2012
- 2012-01-16 CN CN2012200196831U patent/CN202668959U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529064A (en) * | 2012-01-16 | 2012-07-04 | 广州市合诚化学有限公司 | Evacuating device for reactive type double-screw extruder and application of evacuating device |
| CN102529064B (en) * | 2012-01-16 | 2014-04-30 | 广州市合诚化学有限公司 | Evacuating device for reactive type double-screw extruder and application of evacuating device |
| CN105189073A (en) * | 2013-03-22 | 2015-12-23 | 株式会社日本制钢所 | Continuous extrusion device based on twin screw extruder |
| CN103223721A (en) * | 2013-05-14 | 2013-07-31 | 深圳市虹彩新材料科技有限公司 | Double-screw degassing extruder |
| CN103223721B (en) * | 2013-05-14 | 2015-04-01 | 深圳市虹彩新材料科技有限公司 | Double-screw degassing extruder |
| CN105363038A (en) * | 2014-09-01 | 2016-03-02 | 天津宏顺科生物科技有限公司 | Preparation method of pulullan soft capsule |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |
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| CX01 | Expiry of patent term |