CN215472952U - Vacuum waste gas removing device of double-screw extruder - Google Patents
Vacuum waste gas removing device of double-screw extruder Download PDFInfo
- Publication number
- CN215472952U CN215472952U CN202120539314.4U CN202120539314U CN215472952U CN 215472952 U CN215472952 U CN 215472952U CN 202120539314 U CN202120539314 U CN 202120539314U CN 215472952 U CN215472952 U CN 215472952U
- Authority
- CN
- China
- Prior art keywords
- oil
- vacuum chamber
- waste gas
- vacuum
- double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention provides a vacuum waste gas removing device of a double-screw extruder, which comprises a vacuum chamber with a hole at the bottom, a sight glass arranged on the vacuum chamber, a negative pressure pipeline arranged on the vacuum chamber and a gland arranged at the bottom of the vacuum chamber, wherein the sight glass is arranged on the vacuum chamber; the negative pressure pipeline is obliquely arranged, the higher end of the negative pressure pipeline is fixed on the vacuum chamber, and the lower end of the negative pressure pipeline faces outwards; the gland is provided with a communicating hole, an oil-proof ring is arranged on the gland corresponding to the upper side of the communicating hole, and the oil-proof ring is arranged on the gland; the upper end of the oil-proof ring extends into the vacuum chamber, so that an oil storage tank structure is formed at the bottom of the vacuum chamber, and the oil-proof ring is provided with an oil-proof cover; the oil-proof cover covers the top of the oil-proof ring, and the side part of the oil-proof cover is provided with an air passing port. The invention has reasonable structural design and can effectively prevent the pumped waste gas from flowing back or dropping into the main machine under the action of gravity when meeting the liquid formed by cold condensation.
Description
Technical Field
The invention belongs to the technical field of screw extruders, and particularly relates to a vacuum waste gas removing device of a double-screw extruder.
Background
The polymer processing process is that a composite system consisting of resin, an auxiliary agent, mineral powder and the like is subjected to preliminary physical mixing and then enters a double-screw extruder, and materials of the composite system in the double-screw extruder are subjected to melting, plasticizing, dispersing, mixing, distributing, mixing, vacuum exhausting, quantitative extruding and the like. The vacuum exhaust is carried out under negative pressure, and aims to exhaust air, moisture in mineral powder and some small molecular gas which enter a main machine together with the mixed material. The small molecule gas is generated by thermal oxidation reaction of matrix resin, oligomer, processing aid and the like remained in the synthesis process of the matrix resin, and the mixture of air, moisture and the small molecule gas is collectively called as waste gas. The waste gas is condensed due to cooling in the process of being discharged from the inside of the main machine through the vacuum waste gas removing device, and liquid formed by condensation has the phenomenon of flowing back or dropping under the action of gravity and then enters the main machine again. During the polymer processing, the phenomenon can cause the material in a molten state inside the main machine to be discolored, and particularly during the processing of some light-colored and even transparent polymers, the phenomenon can affect the appearance of the material and even cause the material to be scrapped. Therefore, there is a need for an improved vacuum degassing apparatus.
Disclosure of Invention
In view of this, the invention provides a vacuum waste gas removing device for a double-screw extruder, which aims to overcome the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a vacuum waste gas removing device of a double-screw extruder comprises a vacuum chamber with a hole at the bottom, a sight glass arranged on the vacuum chamber, a negative pressure pipeline arranged on the vacuum chamber and a gland arranged at the bottom of the vacuum chamber; the negative pressure pipeline is obliquely arranged, the higher end of the negative pressure pipeline is fixed on the vacuum chamber, and the lower end of the negative pressure pipeline faces outwards;
the oil-proof ring is arranged on the gland, and compared with the structural design that the oil-proof ring is arranged at the bottom of the vacuum chamber, the structure is more convenient for discharging accumulated liquid drops after the gland is disassembled;
the upper end of the oil-proof ring extends into the vacuum chamber, so that an oil storage tank structure is formed at the bottom of the vacuum chamber, and the oil-proof ring is provided with an oil-proof cover; the oil-proof cover covers the top of the oil-proof ring, and the side part of the oil-proof cover is provided with an air passing port;
the negative pressure pipeline is communicated with the inner cavity of the vacuum chamber, the lower part of the gland is provided with a cavity, and after the negative pressure pipeline is connected with the vacuumizing device, waste gas in the main machine enters the oil-proof cover through the communicating hole and enters the vacuum chamber through the air passing hole of the oil-proof cover and then is discharged through the negative pressure pipeline.
Furthermore, the height that the oilproof ring upper end stretched into the vacuum chamber inner chamber is more than 5 cm.
Furthermore, a sealing element is arranged between the hole at the bottom of the vacuum chamber and the outer wall of the oil-proof ring.
Furthermore, a sealing groove is formed in the inner wall of the opening at the bottom of the vacuum chamber, and a sealing element is installed in the sealing groove.
Further, the sealing element is a sealing ring.
Furthermore, the upper end of the vacuum chamber is of an inclined plane structure, and the sight glass is arranged at the top of the vacuum chamber and is in an inclined state.
Furthermore, the inclination angle of the sight glass is 10-20 degrees when the sight glass is clamped with the horizontal plane.
Furthermore, the inclination angle of the negative pressure pipeline is 30-60 degrees from the horizontal plane.
Furthermore, a fixing plate is arranged at the bottom of the vacuum chamber, a connecting plate is arranged at the upper end of the gland, and the fixing plate and the connecting plate are fixed through a connecting piece.
Furthermore, mounting holes are respectively formed in four corners of the connecting plate.
Compared with the prior art, the invention has the following advantages:
the invention has reasonable structural design, the negative pressure pipeline which is arranged on the vacuum chamber in an inclined way can lead the liquid drops to flow to one end far away from the vacuum chamber, the top of the vacuum chamber is arranged in an inclined way, the liquid drops slide to the bottom of the vacuum chamber along the trend instead of dropping by free falling bodies after being formed, even if a small amount of liquid drops dropping by the free falling bodies drop on the oil-proof cover, the liquid drops can drop on the oil-proof cover and can not directly drop on the host machine. Along with the continuation of production, the liquid drop is gathered in the oil storage tank, because of preventing blockking of oilproof board, and the liquid drop can not flow back and get into the host computer, consequently, this device can effectively avoid the waste gas of taking out to meet the liquid backward flow or the drippage entering host computer of cold condensation formation under the action of gravity.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of a vacuum chamber portion in an embodiment of the present invention;
FIG. 3 is a schematic view of a gland portion in an embodiment of the invention;
FIG. 4 is a schematic perspective view of a gland in an embodiment of the present invention;
FIG. 5 is a schematic view of the structure of the lower part of the gland in the embodiment of the invention;
FIG. 6 is a schematic view of an embodiment of the present invention with a seal ring installed;
fig. 7 is a schematic view of an embodiment of the invention with a gasket installed.
Description of reference numerals:
1-vacuum chamber; 2-sight glass; 3-a negative pressure pipeline; 4-pressing the cover; 5-opening a hole at the bottom of the vacuum chamber; 6-a communicating hole; 7-oil control ring; 8-oil storage tank structure; 9-oil-proof cover; 10-a gas passing port; 11-inclined plane; 12-a sealing ring; 13-a seal groove; 14-a fixed plate; 15-a connecting plate; 16-mounting holes; 17-sealing gasket.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.
A twin-screw extruder vacuum waste gas removing device is shown in figures 1 to 7 and comprises a vacuum chamber 1 with an opening at the bottom, a sight glass 2 arranged on the vacuum chamber, a negative pressure pipeline 3 arranged on the vacuum chamber and a gland 4 arranged at the bottom of the vacuum chamber; the negative pressure pipeline is obliquely arranged, the higher end of the negative pressure pipeline is fixed on the vacuum chamber, and the lower end of the negative pressure pipeline faces outwards;
the oil-proof ring is characterized in that the gland is provided with a communicating hole 6, the upper side of the gland is provided with an oil-proof ring 7, and generally, the oil-proof ring can be an independent structural part which is installed and fixed at the communicating hole and can also be an integrally formed structure of the oil-proof ring and the gland.
It should be pointed out that, set up the oil control ring on the gland, compare in the structural design of oil control ring arrangement in real empty room bottom, be more convenient for after dismantling the gland, with the vacuum chamber of liquid drop discharge of gathering, this device uses after a period, can very conveniently dismantle the clearance, the result of use of guarantee preferred.
The upper end of the oil-proof ring extends into the vacuum chamber through the opening 5 at the bottom of the vacuum chamber, so that an oil storage tank structure 8 is formed at the bottom of the vacuum chamber, and the height of the upper end of the oil-proof ring extending into the inner cavity of the vacuum chamber is more than 5 cm. An oil-proof cover 9 is arranged on the oil-proof ring; the oil-proof cover covers the top of the oil-proof ring, and the side part of the oil-proof cover is provided with an air passing port 10. For example, the oil-proof cover is a cylindrical structure with an open lower end, and the side surface of the oil-proof cover is provided with an air through hole, and the lower end of the oil-proof cover is butted with the upper end of the oil-proof ring. It should be noted that the oil-proof cover and the oil-proof ring can also adopt an integrated structure design.
The negative pressure pipeline is communicated with the inner cavity of the vacuum chamber, the lower part of the gland is provided with a cavity, the upper surface of the cavity is a smooth inclined plane 11, after the negative pressure pipeline is connected with the vacuumizing device, waste gas in the main machine enters the oil-proof cover through the communicating hole, enters the vacuum chamber through the air passing hole of the oil-proof cover and is discharged through the negative pressure pipeline.
The vacuum chamber is characterized in that a negative pressure pipeline arranged on the vacuum chamber is designed in a downward inclined mode, and compared with an exhaust pipe horizontally arranged in the prior art, the vacuum chamber effectively avoids the defect that liquid drops gathered in the pipeline flow back into the vacuum chamber; the design of the oil-proof ring on the gland effectively prevents the defect that the liquid drop flows into the main machine compared with the original design without the oil-proof ring, and is very convenient to clean; thirdly, the oil-proof cover is arranged on the gland oil-proof ring, so that the problem that waste gas is condensed on the lower surface of the sight glass to form liquid drops which drop to the exhaust port of the gland below and directly enter the host is solved; and fourthly, the slope design of the top end of the vacuum chamber ensures the inclination angle of the sight glass, the probability of the phenomenon that waste gas is condensed on the lower surface of a window of the vacuum chamber to form liquid drops and the liquid drops fall below is greatly reduced, and the formed liquid drops slide into the liquid storage tank along the lower surface of the sight glass and the inner wall of the vacuum chamber.
In an alternative embodiment, in the case that the difference between the size of the opening at the bottom of the vacuum chamber and the size of the oil-proof ring is small, as shown in fig. 6, a sealing member may be disposed between the inner wall of the opening at the bottom of the vacuum chamber and the outer wall of the oil-proof ring. The structure can be specifically that the inner wall of the opening at the bottom of the vacuum chamber is provided with a sealing groove 13, and the sealing element is arranged in the sealing groove. Typically, the seal is a seal ring 12. Through the sealing ring, leakage between the vacuum chamber and the gland is effectively avoided.
In another alternative embodiment, as shown in fig. 7, in the case that the size of the opening at the bottom of the vacuum chamber is larger than the outer contour of the oil-proof ring, and the size difference between the two is large, a sealing gasket 17 may be disposed between the fixing plate at the bottom of the vacuum chamber and the connecting plate at the upper end of the gland by a person skilled in the art, and the sealing performance between the vacuum chamber and the gland is ensured by the sealing gasket.
For the convenience of observation, in an alternative embodiment, the upper end of the vacuum chamber is in a slope structure, and the sight glass is arranged on the top of the vacuum chamber and is in a slope state. The sight glass referred to here can be purchased from commercially available products.
By way of example, the above-mentioned mirror is inclined at an angle of 10 ° to 20 ° clamped to the horizontal. The inclination angle of the negative pressure pipeline is 30-60 degrees from the horizontal plane. The negative pressure pipeline adopts a downward inclined mode, and compared with the original horizontal exhaust pipe, the problem that liquid drops gathered in the pipeline flow back to the gland (enter the host) is effectively avoided.
When the structure is designed, the bottom of the vacuum chamber is provided with a fixing plate 14, the upper end of the gland is provided with a connecting plate 15, and the fixing plate and the connecting plate are fixed through a connecting piece. And the four corners of the connecting plate are respectively provided with a mounting hole 16, and the connecting plate can be conveniently fastened with the host screw cylinder after a bolt is inserted into the mounting hole. The lower part of the gland is buckled into a screw cylinder of the double-screw extruder, and meanwhile, a groove structure is designed on the bottom of the gland in an adaptive manner, so that the interference with a host screw is avoided.
The invention has reasonable structural design, the negative pressure pipeline which is arranged on the vacuum chamber in an inclined way can lead the liquid drops to flow to one end far away from the vacuum chamber, the top of the vacuum chamber is arranged in an inclined way, the liquid drops slide to the bottom of the vacuum chamber along the trend instead of dropping by free falling bodies after being formed, even if a small amount of liquid drops dropping by the free falling bodies drop on the oil-proof cover, the liquid drops can drop on the oil-proof cover and can not directly drop on the host machine. Along with the continuation of production, the liquid drop is gathered in the oil storage tank, because of preventing blockking of oilproof board, and the liquid drop can not flow back and get into the host computer, consequently, this device can effectively avoid the waste gas of taking out to meet the liquid backward flow or the drippage entering host computer of cold condensation formation under the action of gravity.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a double screw extruder vacuum removes exhaust apparatus which characterized in that: comprises a vacuum chamber with an opening at the bottom, a sight glass arranged on the vacuum chamber, a negative pressure pipeline arranged on the vacuum chamber and a gland arranged at the bottom of the vacuum chamber; the negative pressure pipeline is obliquely arranged;
the gland is provided with a communicating hole, and an oil-proof ring is arranged on the gland corresponding to the upper side of the communicating hole;
the upper end of the oil-proof ring extends into the vacuum chamber, and an oil-proof cover is arranged on the oil-proof ring; the oil-proof cover covers the top of the oil-proof ring, and the side part of the oil-proof cover is provided with an air passing port;
the negative pressure pipeline is communicated with the inner cavity of the vacuum chamber, the lower part of the gland is provided with a cavity, and after the negative pressure pipeline is connected with the vacuumizing device, waste gas in the main machine enters the oil-proof cover through the communicating hole and enters the vacuum chamber through the air passing hole of the oil-proof cover and then is discharged through the negative pressure pipeline.
2. The vacuum waste gas removing device of the double-screw extruder as claimed in claim 1, wherein: the height of the upper end of the oil-proof ring extending into the inner cavity of the vacuum chamber is more than 5 cm.
3. The vacuum waste gas removing device of the double-screw extruder as claimed in claim 1, wherein: a sealing element is arranged between the opening at the bottom of the vacuum chamber and the outer wall of the oil-proof ring.
4. The vacuum waste gas removing device of the double-screw extruder as claimed in claim 3, wherein: and a sealing groove is arranged on the inner wall of the opening at the bottom of the vacuum chamber, and a sealing element is arranged in the sealing groove.
5. The vacuum waste gas removing device of the double-screw extruder as claimed in claim 1, wherein: and mounting holes are respectively formed in the four corners of the connecting plate.
6. The vacuum waste gas removing device of the double-screw extruder as claimed in claim 1, wherein: the upper end of the vacuum chamber is of an inclined plane structure, and the sight glass is arranged at the top of the vacuum chamber and is in an inclined state.
7. The vacuum waste gas removing device of the double-screw extruder as claimed in claim 6, wherein: the inclination angle of the sight glass is 10-20 degrees when the sight glass is clamped with the horizontal plane.
8. The vacuum waste gas removing device of the double-screw extruder as claimed in claim 1, wherein: the inclination angle of the negative pressure pipeline is 30-60 degrees from the horizontal plane.
9. The vacuum waste gas removing device of the double-screw extruder as claimed in claim 1, wherein: the vacuum chamber is provided with a fixing plate at the bottom, a connecting plate is arranged at the upper end of the gland, and the fixing plate and the connecting plate are fixed through a connecting piece.
10. The vacuum waste gas removing device of the double-screw extruder as claimed in claim 9, wherein: and a sealing gasket is arranged between the fixed plate and the connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120539314.4U CN215472952U (en) | 2021-03-16 | 2021-03-16 | Vacuum waste gas removing device of double-screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120539314.4U CN215472952U (en) | 2021-03-16 | 2021-03-16 | Vacuum waste gas removing device of double-screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215472952U true CN215472952U (en) | 2022-01-11 |
Family
ID=79772245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120539314.4U Active CN215472952U (en) | 2021-03-16 | 2021-03-16 | Vacuum waste gas removing device of double-screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215472952U (en) |
-
2021
- 2021-03-16 CN CN202120539314.4U patent/CN215472952U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215472952U (en) | Vacuum waste gas removing device of double-screw extruder | |
| CN216278712U (en) | Hydraulic oil tank and vehicle with same | |
| CN213055935U (en) | Straight-through type exhaust device of conical double-extruder | |
| CN216367994U (en) | Retort is used in resin production | |
| CN214926957U (en) | Double screw extruder is with preventing popping material vacuum exhaust apparatus | |
| CN112791522B (en) | Modular high-temperature gas filter | |
| CN111749873B (en) | Dust filter for pre-stage vacuum pump of laminating machine | |
| CN210033781U (en) | Leakage-proof diaphragm pump | |
| CN214130904U (en) | Car reinforcement film banbury mixer dust pelletizing system | |
| CN111744298B (en) | Plastic particle production system equipment for reinforced composite plastic material | |
| CN215085056U (en) | Vacuum pump unit suitable for plastic extrusion degassing working condition | |
| CN105032326A (en) | Vertical reaction kettle | |
| CN210084272U (en) | A dustproof environment-friendly device for carrying wheat bran | |
| CN213891204U (en) | Vacuum exhaust chamber for preventing single-screw extruder from dropping and volatilizing condensate backflow | |
| CN219654893U (en) | Exhaust port control device of vacuum pump oil tank | |
| CN213107610U (en) | Plastic granulator discharging equipment with anti-blocking structure | |
| CN220314129U (en) | Vacuum water return preventing device | |
| CN207657151U (en) | A kind of extruder vacuum pumping hardware | |
| CN220973289U (en) | Extruder exhaust heat insulation structure for plastic sheet production | |
| CN212942795U (en) | A spraying granulator for pharmaceutical production | |
| CN220115296U (en) | Plastic master batch storage device with dampproofing function | |
| CN209973707U (en) | Up-drawing type bin pump fluidizing device | |
| CN213564009U (en) | Injection molding machine feed opening with anti-pumpback function | |
| CN209955271U (en) | Cooling and drying device for plastic particle extrusion granulator | |
| CN212384215U (en) | Cleaning device for battery formation negative pressure system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |