CN209832554U - Cooling device of extruder feed opening - Google Patents
Cooling device of extruder feed opening Download PDFInfo
- Publication number
- CN209832554U CN209832554U CN201920624702.5U CN201920624702U CN209832554U CN 209832554 U CN209832554 U CN 209832554U CN 201920624702 U CN201920624702 U CN 201920624702U CN 209832554 U CN209832554 U CN 209832554U
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- extruder
- feed opening
- water
- water jacket
- 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 - Fee Related
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 description 7
- 239000004033 plastic Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000012768 molten material Substances 0.000 description 2
- 229920000426 Microplastic Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model belongs to the technical field of sheet processing equipment, a cooling device of extruder feed opening is disclosed, include: big steel pipe (4) and water jacket (5) of extruder outside, water jacket (5) divide into two halves, and each half cup joints respectively on the surface of big steel pipe (4), and each half water jacket has two circular arc boards (7) and two rectangular plate (8), the surface welded connection of two circular arc boards (7), two rectangular plate (8) and big steel pipe (4) to form closed die cavity, the upper and lower end of this closed die cavity is equipped with delivery port and water inlet respectively, closed die cavity inside weld has a plurality of baffling boards (6) that make the rivers of closed die cavity to form the turning back. The utility model discloses can independently cool off, guarantee that extruder sheet material extrudes thickness stably.
Description
Technical Field
The utility model belongs to the technical field of the sheet processing equipment, especially, relate to a cooling device of extruder feed opening.
Background
The extruder heats and extrudes plastic granules into a molten state through a machine barrel and a screw, and then the molten plastic is conveyed to a die head for molding and extrusion through a filter screen and a melt pump. In order to ensure that the molten material is stably extruded from the die head, a pressure sensor is required to be arranged at the front end of the filter screen, the stable pressure value indicates that the molten material is sufficient, the extrusion amount of the die head can be stable, and the thickness of the extruded sheet can be stable. In order to ensure the pressure stability, the feed opening is controlled at a certain temperature set value. The feed opening is a window for the particle plastics to enter the machine barrel, the particle plastics enter the machine barrel from the feed opening, the particle plastics are extruded to the tail end of the screw rod from the feed opening through the rotation of the screw rod, and in the conveying process, the particle plastics are extruded by high-temperature heating and the conveying process of the special screw rod (the screw pitch is reduced and the screw groove is shallower) until the tail end of the screw rod is changed into molten plastics. If the temperature at the feed opening is too high, the pellets "spin in place" at the feed opening because the temperature affects the coefficient of friction between the barrel and screw surfaces, both too high and too low. If the granules can not be conveyed to the tail end of the screw in an in-situ rotating mode, the tail end has less molten plastic, the pressure can be reduced, and the pressure loss influences the thickness stability of the extruded sheet of the die head. The structure of the feed opening is that the outer surface of the machine barrel is machined into a thread shape by a lathe, then a layer of large steel pipe is sleeved, a water inlet and a water outlet are reserved on the outer circle of the large steel pipe, and water flows in a thread groove after water is introduced, so that the purpose of cooling the machine barrel is achieved. However, because of the long-term water supply, scale can be formed in the thread groove, along with the continuous accumulation of scale, the product is thicker and thicker, and water flow is smaller and smaller, finally can cause the water route to block up because of the scale, and the cooling is inefficacy, and feed opening temperature continuously keeps the high temperature state, and extruder decompression is frequent, and sheet thickness is difficult to stabilize.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a cooling device of extruder feed opening can independently cool off, guarantees that extruder sheet extrudes thickness stably.
The embodiment of the utility model provides a realize like this:
a cooling device for a feed opening of an extruder, comprising: the water jacket is divided into two halves, each half is sleeved on the outer surface of the large steel pipe, each half water jacket is provided with two arc plates and two rectangular plates, the outer surfaces of the two arc plates, the two rectangular plates and the large steel pipe are welded and connected to form a closed cavity, the upper end and the lower end of the closed cavity are provided with a water outlet and a water inlet respectively, and a plurality of baffle plates enabling the water flow of the closed cavity to form turning back are welded inside the closed cavity.
The embodiment of the utility model provides a through provide independent cooling device outside the big steel pipe at extruder feed opening, cooling body mutually independent from the area with the extruder, under the condition that produces incrustation scale influence cooling effect because of long-term the use at the cooling body of taking, can provide independent cooling function, it is stable to have guaranteed that extruder sheet material extrudes thickness, the water jacket falls into two halves, the parcel lives big steel pipe outside, the temperature that makes big steel pipe is directly cooled off, the inside a plurality of baffling boards that are equipped with of water jacket, make S-shaped route appear in the inside water route of water jacket, form the flow direction of labyrinth promptly, the route extension of the inside rivers of messenger' S water jacket, the cooling effect has been improved.
Drawings
FIG. 1 is an assembled cross-sectional view of a cooling device of a feed opening of an extruder according to the present invention;
fig. 2 is a half perspective view of the cooling device of the feed opening of the extruder of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description is given to specific implementations of the present invention with reference to specific embodiments:
as shown in FIGS. 1 and 2, the extruder has a feed port 1 at the upper part, and a special screw 2, a cylinder 3 and a large steel pipe 4 are arranged inside the extruder from inside to outside. A cooling device for a feed opening of an extruder, comprising: the outer portion of the extruder is provided with a large steel pipe 4 and a water jacket 5, the water jacket 5 is divided into two halves, each half is sleeved on the outer surface of the large steel pipe 4, each half water jacket is provided with two arc plates 7 and two rectangular plates 8, the outer surfaces of the two arc plates 7, the two rectangular plates 8 and the large steel pipe 4 are welded and connected to form a closed cavity, the upper end and the lower end of the closed cavity are provided with a water outlet and a water inlet respectively, and the closed cavity is internally welded with a plurality of baffle plates 6 enabling the water flow of the closed cavity to form turning back. The cavity between the water jacket 5 and the large steel pipe 4 becomes an independent cooling device, and different from a cooling mechanism of an extruder, the water flow in the cavity is S-shaped by the plurality of baffle plates 6, so that the cooling effect is improved.
The utility model provides a cooling device is as the processing benchmark with the outer wall size of the big steel pipe of feed opening overcoat, every half the same die cavity, by two upper and lower rectangle steel sheets, two arc plates in the front and back, the diameter of little circular arc is the same with the big steel pipe of feed opening, and the great circular arc is exactly the radius direction of little circular arc and adds the height of certain size, and the arc plate both ends coincide with upper and lower rectangle steel sheet edge, weld. The four steel plates are made to surround a pool-shaped groove, a plurality of short arc plates (shorter than the front and the rear arc plates, namely the baffle plates) are welded in the groove, the short arc plates are separated by a certain distance and are respectively welded in a staggered manner from top to bottom in sequence, so that a water flow channel forms an S shape, namely a labyrinth flow direction. The inlet and outlet of water are respectively arranged at two ends of the upper rectangular steel plate and the lower rectangular steel plate, so that water in the cavity is always full of the whole cavity in a mode of feeding water from bottom to top and discharging water from top to bottom. After welding, a steel plate is welded on the upper surface and is welded along the direction of the large arc to form a closed cavity.
The embodiment of the utility model provides an in, in order to form independent cooling device, resume feed opening temperature control's function, only need weld two half water jackets outside the big steel pipe of feed opening, every half water jacket forms confined die cavity after getting up with former big steel pipe excircle welding, the welding has the baffling board in the die cavity, water pipe head has been welded at every half water jacket both ends, lead to into the cooling water, cavity one end can be followed to water, through the baffling board, flow out from the other end, whole circulation process, the big steel pipe of feed opening all soaks in the aquatic that flows, and can realize the purpose for the feed opening cooling like this. This kind of die cavity with baffling board, the water passage sectional area is great, can not cause the water route stifled because of the incrustation scale to die, and big steel pipe outer wall can soak in the aquatic that flows constantly again simultaneously, and the accessible is adjusted the size of business turn over discharge and is controlled the feed opening temperature and realize preset temperature management and control.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (1)
1. A cooling device for a feed opening of an extruder is characterized by comprising: the water jacket is divided into two halves, each half is sleeved on the outer surface of the large steel pipe, each half water jacket is provided with two arc plates and two rectangular plates, the outer surfaces of the two arc plates, the two rectangular plates and the large steel pipe are welded and connected to form a closed cavity, the upper end and the lower end of the closed cavity are provided with a water outlet and a water inlet respectively, and a plurality of baffle plates enabling the water flow of the closed cavity to form turning back are welded inside the closed cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920624702.5U CN209832554U (en) | 2019-04-30 | 2019-04-30 | Cooling device of extruder feed opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920624702.5U CN209832554U (en) | 2019-04-30 | 2019-04-30 | Cooling device of extruder feed opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209832554U true CN209832554U (en) | 2019-12-24 |
Family
ID=68915056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920624702.5U Expired - Fee Related CN209832554U (en) | 2019-04-30 | 2019-04-30 | Cooling device of extruder feed opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209832554U (en) |
-
2019
- 2019-04-30 CN CN201920624702.5U patent/CN209832554U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191224 |