CN2619774Y - Screw extruder - Google Patents
Screw extruder Download PDFInfo
- Publication number
- CN2619774Y CN2619774Y CNU032319312U CN03231931U CN2619774Y CN 2619774 Y CN2619774 Y CN 2619774Y CN U032319312 U CNU032319312 U CN U032319312U CN 03231931 U CN03231931 U CN 03231931U CN 2619774 Y CN2619774 Y CN 2619774Y
- Authority
- CN
- China
- Prior art keywords
- housing
- screw rod
- screw
- screw extruder
- stuffing box
- 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.)
- Expired - Lifetime
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Classifications
-
- 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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a screw extruder which comprises a shell, an inlet, an outlet, a screw, a bearing box and a filling box which is connected with one end of the shell. The outlet is arranged at one side of the filling box of the shell. The inlet is arranged on one side of the shell. The bearing box is arranged at one end of the filling box of the shell. The screw sleeves on the shell and is connected with the rotary shaft of the bearing box. A transition box which is provided with a hand hole is arranged between the filling box and the bearing box. The end of the screw is provided with an extending section which is detachably connected with the end of the screw. The screw extruder can ensure that the unvulcanized rubber will not enter the bearing box from the filling box when discharging so that the screw extruder can work stably in long term.
Description
(1) technical field
The utility model relates to a kind of screw extruder, especially a kind of high viscosity polysiloxanes discharging machine.
(2) background technology
Common, in silicon rubber is produced, the raw-silastic continuously (polysiloxanes) that reaction makes is in the low molecule device of taking off of high vacuum environment, must adopt extruder that it is expressed in the packing container under the normal pressure, its continuous discharging must overcome the high temperature of sizing material, high vacuum, difficult problems such as high viscosity and mobile difference, it is little to require discharging machine to have a volume, performances such as movable sealing is good, and thrust is big, and is high temperature resistant, though general typing Rubber Extruder possesses the fast and stable performance of machine operation of plastic emitting speed, because bulky, reasons such as movable sealing difference can't be used for the discharging that polysiloxanes is produced.Application number is 98229061.6 utility model, the common screw extruder is also disclosed because structural defective causes movable sealing weak effect, shortcoming that production efficiency is low, and disclose improvement project: the charging aperture of screw extruder is arranged at a end near the screw rod top, and discharging opening is arranged near screw rod tail.But also there is following defective in it: 1, the structure of stuffing box and bearing housing integral type makes its reliability decrease, rubber oozes out from the slit of stuffing box and axle easily and enters bearing housing when the rubber discharging, destroyed the lubricated environment of bearing, quicken the wearing and tearing of bearing, often turning round continuously just must stop in 200-300 hour changes bearing, with short production cycle; 2, the screw tip of described discharging machine is alignd with mounting flange, and when charging, screw rod is extruded rubber from the charging aperture that takes off in the low molecule device, because the viscosity of raw-silastic continuously is very big, rubber in the container has little time to replenish, and generates the cavity at flange connections, and plastic emitting efficient is low; 3, using the condensed water condensation between the barrel of bilayer, is parallel distribution between the bitubular, and the effect of condensation is not fine.
Because the restriction of static mixer continuity method rubber technology itself, the unit ability is limited in 1500 tons/year always, though some problems also occurred on 1000 tons of/year devices, above-mentioned extruder has still satisfied production requirement substantially.In recent years along with the development of silicon rubber synthesis technology, batch process rubber production technology has obtained breakthrough, and the unit ability surpasses more than 3000 tons/year, and the problem that above-mentioned discharging machine exists displays, and is difficult to adapt to new demand.Therefore, the structure of extruder needs further improvement.
(3) summary of the invention
Rubber oozes out from the slit of stuffing box and axle easily and enters bearing housing, deficiency with short production cycle when overcoming discharging in the prior art, the utility model provides a kind of novel screw extruder, can guarantee during discharging that rubber can not enter bearing housing from housing, make the screw extruder working stability, the work period is long.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of screw extruder, comprise housing, charging aperture, discharging opening, screw rod, bearing housing, stuffing box, described stuffing box is connected with described housing one end, described discharging opening is arranged on stuffing box one side of described housing, described charging aperture is arranged on the opposite side of housing, described bearing housing is arranged on stuffing box one end of described housing, described screw rod is socketed on described housing, described screw rod is connected with the rotating shaft of described bearing housing, be provided with the transition case between described stuffing box and described bearing housing, described transition case is provided with hand hole.
Further, described screw rod end is provided with the extension, and described extension removably is connected with described screw rod, be connected by screw thread with the screw rod end, this screw thread adopts left-hand thread, along with the rotation of screw rod, the end meeting self-tightening of extension and screw rod can not become flexible.
Further again, described housing is provided with condensing unit, and described housing is made up of inside and outside barrel, and described inner tube wall is screw-like.
Further, the rotating shaft of described bearing housing and described screw rod are one; The rotating shaft of described bearing housing and described screw rod can be splits, and the mode that connects by axle connects.
The beneficial effect of a kind of screw extruder described in the utility model mainly shows: 1, be provided with the transition case between described stuffing box and described bearing housing, described transition case is provided with hand hole, described bearing housing and stuffing box are separated, rubber just can not enter in the bearing housing by the infiltrate stuffing box so, can guarantee the lubricated environment of bearing, the use birthday noodle of bearing prolong, working stability, and the cycle of work is longer; 2, described screw rod end is provided with the extension, and screw rod is extended in the charging aperture, and the production of high viscosity silicon rubber is had significant pusher effect, simultaneously through stirring, can break because the bubble that some abnormal factorses produce makes and produces stable carrying out; 3, described housing is made up of inside and outside barrel, and described inside and outside barrel is formed the cavity that can hold condensed water, and described inner tube wall is screw-like, has increased the contact area of condensed water and inner tube wall, and condensation effect is better; 4, the rotating shaft of screw rod and bearing housing can be an one, it also can be split, can guarantee the concentricity of screw rod and housing during one, the benefit of split-type structural is can not change bearing when changing screw rod, the wearing and tearing of screw rod are bigger, with respect to bearing, use birthday noodle shorter, can be more economically.
(4) description of drawings
Fig. 1 is the structural representation of screw extruder described in the utility model.
(5) specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Embodiment 1
With reference to figure 1, a kind of screw extruder, comprise housing 1, charging aperture 2, discharging opening 3, screw rod 4, bearing housing 5, stuffing box 14, stuffing box 14 is connected with an end of housing 1, and discharging opening 3 is arranged on stuffing box one side of housing 1, charging aperture 2 is arranged on the opposite side of housing 1, bearing housing 5 is arranged on stuffing box one end of housing 1, and screw rod 4 is socketed on housing 1, and screw rod 4 is connected with the rotating shaft 6 of bearing housing 5, be provided with transition case 7 between stuffing box 14 and bearing housing 5, transition case 7 is provided with hand hole 8.Screw rod 4 ends are provided with extension 9, and extension 9 removably is connected with screw rod 4, are connected by screw thread with screw rod 4 ends, and this screw thread adopts left-hand thread.Housing is provided with condensing unit, and housing is made up of inside and outside barrel, and inner tube wall 10 is screw-like.The rotating shaft 6 and the screw rod 4 of bearing housing 5 are one, can guarantee the concentricity of screw rod 4 and housing 1, and it is stable that screw extruder work is compared.
With reference to figure 1, a kind of screw extruder, comprise housing 1, charging aperture 2, discharging opening 3, screw rod 4, bearing housing 5, stuffing box 14, stuffing box 14 is connected with an end of housing 1, and discharging opening 3 is arranged on stuffing box one side of housing 1, charging aperture 2 is arranged on the opposite side of housing 1, bearing housing 5 is arranged on stuffing box one end of housing 1, and screw rod 4 is socketed on housing 1, and screw rod 4 is connected with the rotating shaft 6 of bearing housing 5, be provided with transition case 7 between stuffing box 14 and bearing housing 5, transition case 7 is provided with hand hole 8.Screw rod 4 ends are provided with extension 9, and extension 9 removably is connected with screw rod 4, are connected by screw thread with screw rod 4 ends, and this screw thread adopts left-hand thread.Housing is provided with condensing unit, and housing is made up of inside and outside barrel, and inner tube wall 10 is screw-like.The rotating shaft 6 and the screw rod 4 of bearing housing 5 are splits, because the operating temperature of screw rod 4 is very high, it is bigger to wear and tear, need regular changing, the rotating shaft 6 of bearing housing 5 uses birthday noodle longer, removably connect between screw rod 4 and the rotating shaft 6, rotating shaft 6 can not changed when screw rod 4 is changed so, and screw extruder uses economy more.
The screw extruder course of work described in the utility model is as follows: rubber enters charging aperture 2 from vacuum tank, in stuffing box 14, insert rubber, after drive motors 11 energisings, the rotating shaft 6 of bearing housing 5 is rotated, driving screw rod 4 rotates, high viscosity silica gel can be from charging aperture 2 along housing 1 be extruded so, arrive discharging opening 3, owing to can not seal fully between the rubber of stuffing box 14 and the screw rod 4, high viscosity silica gel in the housing 1 can enter in the transition case 7, because transition case 7 is provided with hand hole 8, can in time clear up the high viscosity silica gel that takes out in the transition case 7, like this, high viscosity silica gel just can not enter in the bearing housing 5, the use birthday noodle of rotating shaft 6 are prolonged, can guarantee long-time steady operation.Be provided with extension 9 in the end of screw rod 4, when charging, play significant pusher effect,, can break because the bubble that some abnormal factorses produce also can make the stable work of screw extruder by stirring.Enable condensing unit in operation, supply water from water inlet 12, delivery port 13 flows out, because the inner tube wall 10 of barrel 1 is screw-like, cooling effect is better.
Claims (7)
1, a kind of screw extruder, comprise housing, charging aperture, discharging opening, screw rod, bearing housing, stuffing box, described stuffing box is connected with described housing one end, described discharging opening is arranged on stuffing box one side of described housing, described charging aperture is arranged on the opposite side of housing, described bearing housing is arranged on stuffing box one end of described housing, described screw rod is socketed on described housing, described screw rod is connected with the rotating shaft of described bearing housing, it is characterized in that being provided with the transition case between described stuffing box and described bearing housing, described transition case is provided with hand hole.
2, screw extruder as claimed in claim 1 is characterized in that described screw rod end is provided with the extension.
3, screw extruder as claimed in claim 1 or 2 is characterized in that described housing is provided with the condensing unit of being made up of inside and outside barrel.
4, screw extruder as claimed in claim 3 is characterized in that described inner tube wall is screw-like.
5, screw extruder as claimed in claim 1 or 2 is characterized in that the rotating shaft of described bearing housing and described screw rod are one.
6, screw extruder as claimed in claim 1 or 2 is characterized in that the rotating shaft of described bearing housing and described screw rod are splits, and the mode that connects by axle connects.
7, screw extruder as claimed in claim 2 is characterized in that described extension removably is connected with described screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032319312U CN2619774Y (en) | 2003-06-03 | 2003-06-03 | Screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032319312U CN2619774Y (en) | 2003-06-03 | 2003-06-03 | Screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2619774Y true CN2619774Y (en) | 2004-06-09 |
Family
ID=34248426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032319312U Expired - Lifetime CN2619774Y (en) | 2003-06-03 | 2003-06-03 | Screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2619774Y (en) |
-
2003
- 2003-06-03 CN CNU032319312U patent/CN2619774Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130603 Granted publication date: 20040609 |