CN218139797U - Vacuum exhaust equipment of parallel double-screw extruder - Google Patents
Vacuum exhaust equipment of parallel double-screw extruder Download PDFInfo
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- CN218139797U CN218139797U CN202222799910.3U CN202222799910U CN218139797U CN 218139797 U CN218139797 U CN 218139797U CN 202222799910 U CN202222799910 U CN 202222799910U CN 218139797 U CN218139797 U CN 218139797U
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- vacuum pump
- exhaust
- screw extruder
- filtering tank
- tank body
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Abstract
The utility model discloses a vacuum exhaust device of a parallel double-screw extruder, which relates to the exhaust field of the parallel double-screw extruder and comprises a first exhaust vacuum pump assembly and a second exhaust vacuum pump assembly; the first exhaust vacuum pump assembly comprises a first water-ring vacuum pump, the water-ring vacuum pump is connected with a first filtering tank body, and a filter screen is arranged in the first filtering tank body; the second exhaust vacuum pump assembly comprises a Roots vacuum pump A and a Roots vacuum pump B, the Roots vacuum pump A and the Roots vacuum pump B are connected through a metal hose A, the Roots vacuum pump B is connected with a second water ring type vacuum pump through the metal hose B, and the Roots vacuum pump A is connected with a second filtering tank body through a pipeline; and the first exhaust vacuum pump assembly and the second exhaust vacuum pump assembly are matched for use to discharge gas and impurities of the parallel double-screw extruder.
Description
Technical Field
The utility model relates to a parallel double screw extruder exhaust technical field specifically is a parallel double screw extruder vacuum exhaust equipment.
Background
PET plastic sheets are a new type of plastic product that has been developed in recent years. Due to the excellent toughness, high strength and high transparency, and the excellent environmental protection performance of being recyclable and not producing harmful gas during combustion, the environment-friendly flame-retardant plastic material is gradually subjected to the extreme smell of consumers and producers.
Compared with a single-screw extruder, the parallel double-screw extruder has the advantages that the residence time of materials in the double-screw extruder is short, and the residence time distribution is narrow, so that the double-screw extruder is suitable for processing heat-sensitive materials. The excellent exhaust performance enables the self-cleaning function of the double-screw cylinder to enable materials to obtain excellent mixing and plasticizing effects at the exhaust section. The double-screw extruder has the advantages of high yield, high extrusion speed and low energy consumption per unit yield. Because the parallel double-screw extruder has three exhaust holes, most of vacuum exhaust devices in the current market are the combination of a single water ring vacuum pump and a filter tank or the combination of a single Roots vacuum pump and a filter tank, and the parallel double-screw extruder is not suitable for use. In the production of a PET plastic sheet production line, steam and precipitates are generated when plastic is heated and melted by an extruding machine, if the steam and the precipitates cannot be discharged in time, the quality and the performance of a PET plastic sheet product can be directly influenced, but the gas is directly discharged to cause environmental pollution, so that the purification treatment is required before the gas is discharged.
Based on this, the utility model designs a parallel double screw extruder vacuum exhaust equipment to solve the above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a parallel twin-screw extruder vacuum exhaust equipment takes granule type impurity out through first exhaust vacuum pump assembly, takes vapor and precipitate out through second exhaust vacuum pump assembly, and first exhaust vacuum pump assembly and the cooperation of second exhaust vacuum pump assembly are used, and the parallel twin-screw extruder of discharging is gaseous and impurity, improves the quality and the performance of plastic sheet goods to solve the problem of proposing in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a vacuum exhaust device of a parallel double-screw extruder comprises a first exhaust vacuum pump assembly and a second exhaust vacuum pump assembly;
the first exhaust vacuum pump assembly comprises a first water-ring vacuum pump, a first filtering tank body is connected to the water-ring vacuum pump, a filtering net is arranged in the first filtering tank body, and the first filtering tank body is connected with a first exhaust port of the parallel double-screw extruder;
the second exhaust vacuum pump assembly comprises a Roots vacuum pump A and a Roots vacuum pump B, the Roots vacuum pump A and the Roots vacuum pump B are connected through a metal hose A, the Roots vacuum pump B is connected with a second water ring vacuum pump through a metal hose B, the Roots vacuum pump A is connected with a second filtering tank through a pipeline, and the second filtering tank is connected with a second exhaust port and a third exhaust port of the twin-screw extruder.
Preferably, the first exhaust vacuum pump assembly further comprises a first pneumatic butterfly valve, and the first pneumatic butterfly valve is arranged between the first water ring vacuum pump and the first filtering tank body.
Preferably, the first exhaust vacuum pump assembly further comprises a first frame, and the first water ring vacuum pump is arranged at the top of the first frame.
Preferably, a first drain valve is arranged on the first filtering tank body.
Preferably, the second exhaust vacuum pump assembly further comprises a pneumatic butterfly valve A and a pneumatic butterfly valve B, wherein the pneumatic butterfly valve A is installed on the air inlet flange of the second filtering tank body, and the pneumatic butterfly valve B is installed on the metal hose B.
Preferably, two groups of flange detection windows are arranged on the second filtering tank body.
Preferably, the bottom of the second filtering tank body is provided with a second sewage draining valve.
Preferably, the second exhaust vacuum pump assembly further comprises a second frame, and the roots vacuum pump a, the roots vacuum pump B and the second water-ring vacuum pump are respectively mounted on the second frame.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses in, take granule type impurity out through first exhaust vacuum pump assembly, take vapor and educt out through second exhaust vacuum pump assembly, first exhaust vacuum pump assembly and the cooperation of second exhaust vacuum pump assembly use, and the parallel double screw extruder of discharge is gaseous and impurity, improves the quality and the performance of plastic sheet goods.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a first exhaust vacuum pump assembly of the present invention;
fig. 2 is a schematic diagram of a second exhaust vacuum pump assembly of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-2, the utility model provides a technical solution of vacuum exhaust equipment for parallel twin-screw extruder: comprises a first exhaust vacuum pump assembly and a second exhaust vacuum pump assembly;
the first exhaust vacuum pump assembly comprises a first water-ring vacuum pump 3, a first filtering tank body 2 is connected to the water-ring vacuum pump, a filter screen 1 is arranged in the first filtering tank body 2, the first filtering tank body 2 is connected with a first exhaust port of the parallel twin-screw extruder, the first water-ring vacuum pump 3 works to pump out steam and educts in the extruder, and granular substances are pumped into the first filtering tank body 2 and are discharged by the water-ring vacuum pump after being filtered by the filter screen 1;
the second exhaust vacuum pump assembly comprises a Roots vacuum pump A14 and a Roots vacuum pump B8, the Roots vacuum pump A14 is connected with the Roots vacuum pump B8 through a metal hose A7, the Roots vacuum pump B8 is connected with a second water-ring vacuum pump 11 through a metal hose B9, the Roots vacuum pump A14 is connected with a second filtering tank 17 through a pipeline 15, the second filtering tank 17 is connected with a second exhaust port and a third exhaust port of the twin-screw extruder, the Roots vacuum pump A14, the Roots vacuum pump B8 and the second water-ring vacuum pump 11 work to pump out water vapor and educt in the extruder, granular substances are pumped into the second filtering tank 17, circulating cooling water in the second filtering tank 17 cools the interior of the tank to form a cooling space, educt and impurities generated by high-temperature gas through in-tank cooling are deposited at the bottom of the second filtering tank 17, and the gases exhausted by the Roots vacuum pump A14 and the Roots vacuum pump B8 are further treated by a water-gas separator after being sucked in the second water-ring vacuum pump 11, so as to ensure that the cleanness of the exhausted gases.
Wherein, first exhaust vacuum pump assembly still includes first pneumatic butterfly valve 6, first pneumatic butterfly valve 6 set up in states between first water ring vacuum pump 3 and the first jar of body 2 of filtering, through the first pneumatic butterfly 6 valve control first water ring vacuum pump 3 and the first jar of body 2 between the intercommunication and close of filtering.
Wherein, first exhaust vacuum pump assembly still includes first frame 4, first water ring vacuum pump 3 set up in 4 tops of first frame, through setting up first frame 4, set up first water ring vacuum pump 3 of 4 installations of first frame simultaneously, can place in suitable position according to using the place.
Wherein, be provided with first blowdown valve 5 on the first filtration jar body 2, impurity and the sewage of the first filtration jar body 2 of accessible first blowdown valve 5 regular cleaning.
The second exhaust vacuum pump assembly further comprises a pneumatic butterfly valve A16 and a pneumatic butterfly valve B10, the pneumatic butterfly valve A16 is installed on an air inlet flange of the second filtering tank body 17, the pneumatic butterfly valve A16 is used for controlling the connection and the disconnection between the Roots vacuum pump A14 and the second filtering tank body 17, the pneumatic butterfly valve B10 is installed on the metal hose B9, and the pneumatic butterfly valve B10 is used for controlling the connection and the disconnection between the Roots vacuum pump B8 and the second water ring vacuum pump 11.
Wherein, install two sets of flange on the second filters jar of body 17 and visit window 18, set up the flange simultaneously and visit window 18, be convenient for clear up the impurity in the second filters jar of body 17.
Wherein, the bottom of the second filtering tank 17 is provided with a second blow-off valve 12, and precipitates and impurities generated by cooling high-temperature gas in the tank are deposited at the bottom in the second filtering tank 17 and can be discharged through the second blow-off valve 12.
The second exhaust vacuum pump assembly further comprises a second frame 13, and the roots vacuum pump a14, the roots vacuum pump B8 and the second water-ring vacuum pump 11 are respectively mounted on the second frame 13.
The specific working principle is as follows:
when the parallel twin-screw extruder is used, the first filtering tank body 2 is connected with a first exhaust port of the parallel twin-screw extruder, the second filtering tank body 17 is connected with a second exhaust port and a third exhaust port of the parallel twin-screw extruder, the first water ring vacuum pump 3 works to pump out water vapor and precipitates in the extruder, granular substances are pumped into the first filtering tank body 2 and are discharged by the water ring vacuum pump after being filtered by the filter screen 1, impurities and sewage in the first filtering tank body 2 can be regularly cleaned through the first blowdown valve 5, the roots vacuum pump A14, the roots vacuum pump B8 and the second water ring vacuum pump 11 work to pump out the water vapor and the precipitates in the extruder, the granular substances are pumped into the second filtering tank body 17, circulating cooling water in the second filtering tank body 17 cools the tank body to form a cooling space, precipitates and impurities generated by cooling in the tank body are deposited at the bottom of the second filtering tank body 17 and can be discharged through the second blowdown valve 12, a gas separator A14 and a roots vacuum pump B8 are further sucked into the second water ring vacuum pump 11 to be treated, and discharged, and finally the discharged to ensure that the discharged gas meets the requirements of environmental protection.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to best understand the invention and its practical application. The present invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides a parallel twin-screw extruder vacuum exhaust equipment which characterized in that: comprises a first exhaust vacuum pump assembly and a second exhaust vacuum pump assembly;
the first exhaust vacuum pump assembly comprises a first water-ring vacuum pump (3), a first filtering tank body (2) is connected to the water-ring vacuum pump, a filter screen (1) is arranged in the first filtering tank body (2), and the first filtering tank body (2) is connected with a first exhaust port of the parallel double-screw extruder;
the second exhaust vacuum pump assembly comprises a Roots vacuum pump A (14) and a Roots vacuum pump B (8), the Roots vacuum pump A (14) is connected with the Roots vacuum pump B (8) through a metal hose A (7), the Roots vacuum pump B (8) is connected with a second water-ring vacuum pump (11) through a metal hose B (9), the Roots vacuum pump A (14) is connected with a second filtering tank body (17) through a pipeline (15), and the second filtering tank body (17) is connected with a second exhaust port and a third exhaust port of the twin-screw extruder.
2. The parallel twin-screw extruder vacuum degassing apparatus according to claim 1, wherein: the first exhaust vacuum pump assembly further comprises a first pneumatic butterfly valve (6), and the first pneumatic butterfly valve (6) is arranged between the first water ring vacuum pump (3) and the first filtering tank body (2).
3. The parallel twin-screw extruder vacuum degassing apparatus according to claim 2, wherein: the first exhaust vacuum pump assembly further comprises a first frame (4), and the first water-ring vacuum pump (3) is arranged at the top of the first frame (4).
4. A parallel twin-screw extruder vacuum degassing apparatus according to claim 3, wherein: the first filtering tank body (2) is provided with a first sewage draining valve (5).
5. The parallel twin-screw extruder vacuum degassing apparatus according to claim 1, wherein: the second exhaust vacuum pump assembly further comprises a pneumatic butterfly valve A (16) and a pneumatic butterfly valve B (10), the pneumatic butterfly valve A (16) is installed on an air inlet flange of the second filtering tank body (17), and the pneumatic butterfly valve B (10) is installed on the metal hose B (9).
6. The parallel twin-screw extruder vacuum degassing apparatus according to claim 5, wherein: two groups of flange detection windows (18) are arranged on the second filtering tank body (17).
7. The parallel twin-screw extruder vacuum degassing apparatus according to claim 6, wherein: and a second sewage draining valve (12) is arranged at the bottom of the second filtering tank body (17).
8. The parallel twin-screw extruder vacuum degassing apparatus according to claim 7, wherein: the second exhaust vacuum pump assembly further comprises a second rack (13), and the Roots vacuum pump A (14), the Roots vacuum pump B (8) and the second water-ring vacuum pump (11) are respectively installed on the second rack (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222799910.3U CN218139797U (en) | 2022-10-24 | 2022-10-24 | Vacuum exhaust equipment of parallel double-screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222799910.3U CN218139797U (en) | 2022-10-24 | 2022-10-24 | Vacuum exhaust equipment of parallel double-screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218139797U true CN218139797U (en) | 2022-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222799910.3U Active CN218139797U (en) | 2022-10-24 | 2022-10-24 | Vacuum exhaust equipment of parallel double-screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218139797U (en) |
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2022
- 2022-10-24 CN CN202222799910.3U patent/CN218139797U/en active Active
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