Anti-blocking material pipe with upper opening

Abstract

The utility model provides an anti-clogging upper opening material pipe which comprises an upper opening material pipe main body, the upper opening material pipe main body comprises a machine barrel and a machine barrel inner sleeve installed in the machine barrel, a feeding port is formed in the top side of the machine barrel, a first cooling water channel located on the peripheral side of the feeding port is arranged in the top side of the machine barrel, and a second cooling water channel located on the peripheral side of the feeding port is formed in the top side of the machine barrel. A second cooling water channel located on the side of the feeding port and below the first cooling water channel is further arranged in the top side of the machine barrel. Wherein the first cooling water channel is a concentric-square-shaped cooling water pipe, and the side, close to the second material-saving pipe, of the second cooling water channel is provided with double-layer cooling water pipes which are parallel to each other; the material pipe has the following beneficial effects that the concentric-square-shaped cooling water pipe is arranged on the material pipe wall around the material inlet of the first section of the material pipe main body with the upper opening, and the double-layer cooling water pipe is designed on the inner side of the material inlet inclined surface of the material pipe main body with the upper opening, so that blockage caused by caking of a plastic additive at the material inlet can be avoided; therefore, popularization and use are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic and rubber processing machinery, in particular to an anti-blocking upper opening material pipe. Background Art

[0002] The basic production process for compounding modified plastics using a twin-screw extruder is as follows: Plastic granules are mixed uniformly in a mixer and fed into an intermediate storage tank via a feeder. Glass fiber and plastic additives are then added to their corresponding intermediate storage tanks and fed evenly into the extruder via a loss-in-weight feeder. Plastic granules and additives enter through the upper opening of the first section of the extruder, while glass fiber is fed from the side of the intermediate tube. The components are melted and mixed in the twin-screw extruder and extruded through the die plate into cylindrical strands. After exiting the die, the strands enter a cooling water trough for cooling. After cooling, they are blown dry to remove surface moisture. They then enter a pelletizer and are cut into plastic pellets. These pellets are then conveyed through a pellet conveying system into a finished product silo, dried, and packaged for storage. The extruder is connected by multiple sections of material pipes, with a pair of twin screws inside. The first section is an upper opening material pipe, through which plastic particles and additives enter the extruder. The second and third sections are closed material pipes. The first section of the upper opening material pipe has no heating device and is connected to cooling water to cool the barrel. Its main function is to prevent the material from melting at the feed port due to high temperature and clogging the feed port. The other material pipes are equipped with heating pipes to heat the material pipes to reach the process temperature required for plastic processing.

[0003] Normally, the temperature of the second section of the extruder barrel is set at 200-300 degrees Celsius. The set temperature varies depending on the material being processed. Heat transfer causes the temperature of the first section of the barrel to rise, especially at the upper inlet, which is farther away from the cooling water channel and can reach 50-100 degrees Celsius. Because most plastic additives have low melting points, the high temperature at the inlet of the first section of the extruder's upper barrel often causes the additives to melt and agglomerate. This accumulation can clog the feed port, preventing the plastic pellets and additives from entering the extruder properly. While the side-fed glass fiber continues to flow into the barrel, the screw inside the extruder can become stuck.

[0004] The shortcomings of the current process are as follows: (1) The first section of the upper opening material pipe has no cooling water channel on the upper end face. The inlet is not cooled sufficiently because it is far away from the internal cooling water channel. The additives are easy to melt and agglomerate at the inlet, causing the plastic particles to be unable to enter the extruder material pipe normally. During production, the glass fiber is fed into the extruder from the side feeder in the middle of the extruder, which will cause the extruder to get stuck. (2) When the extruder gets stuck, it is necessary to manually dismantle the material pipe and pull out the twin screws for cleaning, which usually takes 2 days, resulting in a waste of manpower costs and affecting the production progress. (3) When the extruder screw is seriously stuck, it will cause the screw to twist or even break, causing damage to the equipment. For the above shortcomings, a good solution is needed to solve the problem of additives agglomerating at the inlet of the first section of the upper opening material pipe due to high temperature. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an anti-clogging upper opening material pipe, which is used to solve the problem of additive agglomeration at the inlet of the first section of the upper opening material pipe in the prior art due to high temperature.

[0006] To achieve the above-mentioned and other related purposes, the present invention provides the following technical solutions:

[0007] A blockage-resistant upper opening material pipe comprises an upper opening material pipe body, the upper opening material pipe body comprising a barrel and a barrel inner sleeve installed in the barrel, a feed port is provided on the top side of the barrel, a first cooling water channel is provided on the top side of the barrel and is located around the feed port, and a second cooling water channel is also provided on the top side of the barrel and is located to the side of the feed port and below the first cooling water channel; wherein the first cooling water channel is a meandering cooling water pipe, and the second cooling water channel is arranged as a double-layer cooling water pipe parallel to each other on the side close to the second section of the material pipe.

[0008] The above technical solution designs a circle of meandering water pipes around the feed port of the upper opening material pipe body, and also designs a double-layer cooling water pipe on the inner feed slope of the upper opening material pipe body, which can reduce the temperature of the feed slope, thereby reducing the temperature at the feed port to 30-40 degrees, effectively preventing the plastic additives from agglomerating at the feed port and causing blockage.

[0009] In one embodiment of the present invention, a first opening is provided on the top side of the barrel inner sleeve, which is located directly below the feed port; a second opening is provided on one side of the barrel and the barrel inner sleeve for the twin screws to pass through; a third opening is provided on the other side of the barrel and the barrel inner sleeve for the twin screws to pass through; and a plurality of threaded holes are provided on both side surfaces of the barrel. In this technical solution, the upper opening material pipe body can be installed on the twin-screw extruder by passing screws through the threaded holes.

[0010] In one embodiment of the present invention, the water inlet of the first cooling water channel is connected to a first water inlet joint, and the water outlet of the first cooling water channel is connected to a first water outlet joint.

[0011] In one embodiment of the present invention, a third cooling water channel connected to the second cooling water channel is provided in the front bottom side of the barrel, and a fourth cooling water channel connected to the third cooling water channel is provided in the rear bottom side of the barrel.

[0012] In one embodiment of the present invention, the third cooling water channel includes several cooling water pipes that are U-shaped and connected end to end. The water inlet of the third cooling water channel is connected to the second water inlet joint, and the water outlet of the third cooling water channel is connected to the water inlet of the second cooling water channel.

[0013] In one embodiment of the present invention, the water outlet of the second cooling water channel is connected to the water inlet of the fourth cooling water channel. The fourth cooling water channel also includes a plurality of U-shaped cooling water pipes connected end to end. The water outlet of the fourth cooling water channel is connected to a second water outlet joint.

[0014] In one embodiment of the present invention, the first water inlet joint, the first water outlet joint, the second water inlet joint and the second water outlet joint are all connected to the manual ball valve through a connecting pipe. The manual ball valve is installed on the main water channel of the raw cooling material pipe of the twin-screw extruder. The manual ball valve in this technical solution can control the on and off of the water inlet joint and the water outlet joint.

[0015] As described above, the anti-clogging upper opening material pipe of the utility model has the following beneficial effects:

[0016] The utility model has a material pipe wall around the feed port of the upper opening material pipe body of the first section and a double-layer cooling water pipe designed on the inner side of the feed inclined surface of the upper opening material pipe body, thereby preventing the auxiliary agent from agglomerating at the feed port due to high temperature, requiring shutdown for cleaning, wasting work time and causing material loss; it can also prevent the auxiliary agent from agglomerating and blocking the feed port, avoiding the production of defective products caused by the inability of plastic particles to enter the extruder normally; it can also prevent the auxiliary agent from agglomerating at the feed port, avoiding the extruder from being stuck by the glass fiber, resulting in the need to dismantle the material pipe for cleaning, which is time-consuming and leads to loss of work time, thereby solving the problem that the screw rod may be twisted and deformed and scrapped when the extruder is seriously stuck, and is convenient for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a left front perspective view of an anti-clogging upper opening material pipe disclosed in an embodiment of the present utility model;

[0018] Figure 2 The figure shows a right front perspective view of the anti-clogging upper opening material pipe disclosed in an embodiment of the present utility model;

[0019] Figure 3 Shown is a three-dimensional schematic diagram of the inner sleeve of the barrel in the anti-clogging upper opening material pipe disclosed in an embodiment of the present utility model;

[0020] Figure 4 Shown is a left front perspective schematic diagram of a first cooling water channel in an anti-clogging upper opening material pipe disclosed in an embodiment of the present utility model;

[0021] Figure 5 A left front perspective view of a barrel inner sleeve, a second cooling water channel, a third cooling water channel, and a fourth cooling water channel in an anti-clogging upper opening material pipe disclosed in an embodiment of the present invention is shown;

[0022] Figure 6A right rear perspective view of the barrel inner sleeve, the second cooling water channel, the third cooling water channel, and the fourth cooling water channel in the anti-clogging upper opening material pipe disclosed in an embodiment of the present invention is shown;

[0023] Figure 7 It shows a bottom-up stereoscopic diagram of the barrel inner sleeve, the second cooling water channel, the third cooling water channel and the fourth cooling water channel in the anti-clogging upper opening material pipe disclosed in an embodiment of the present utility model.

[0024] Component number description

[0025] 1. Upper opening material pipe body; 2. Machine barrel; 3. Machine barrel inner sleeve; 4. Material inlet; 5. Second opening; 6. First water inlet joint; 7. First water outlet joint; 8. Third opening; 9. Second water inlet joint; 10. Second water outlet joint; 11. First opening; 12. First cooling water channel; 13. Second cooling water channel; 14. Third cooling water channel; 15. Fourth cooling water channel. DETAILED DESCRIPTION

[0026] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other unless there is a conflict.

[0027] See also Figures 1 to 7 The utility model provides an anti-clogging upper opening material pipe, including an upper opening material pipe body 1, the upper opening material pipe body 1 includes a barrel 2 and a barrel inner sleeve 3 installed in the barrel 2, a feed port 4 is opened on the top side of the barrel 2, a first through port 11 is opened on the top side of the barrel inner sleeve 3 and is located directly below the feed port 4, a second through port 5 for the twin screws to pass through is opened on one side of the barrel 2 and the barrel inner sleeve 3, a third through port 8 for the twin screws to pass through is opened on the other side of the barrel 2 and the barrel inner sleeve 3, and a plurality of threaded holes are also opened on both sides of the barrel 2, wherein the upper opening material pipe body 1 can be installed on the twin screw extruder by passing screws through the threaded holes.

[0028] exist Figures 4 to 7In the embodiment, a first cooling water channel 12 is provided on the top side of the barrel 2, which is located on the side of the feed port 4. The first cooling water channel 12 is a meandering cooling water pipe. The water inlet of the first cooling water channel 12 is connected to the first water inlet joint 6, and the water outlet of the first cooling water channel 12 is connected to the first water outlet joint 7. A second cooling water channel 13 is also provided on the top side of the barrel 2, which is located on the side of the feed port 4 and below the first cooling water channel 12. The second cooling water channel 13 is arranged as a double-layer cooling water pipe parallel to each other on the side close to the second section of the feed pipe. The first cooling water channel 12 and the second cooling water channel 13 are both located above the barrel inner sleeve 3. By designing a circle of meandering water pipes around the feed port 4 of the upper opening feed pipe body 1, and also designing a double-layer cooling water pipe on the inner feeding slope of the upper opening feed pipe body 1, the temperature of the feeding slope can be reduced, so that the temperature at the feed port 4 is reduced to 30-40 degrees, effectively avoiding the plastic additive from agglomerating at the feed port 4 and causing blockage.

[0029] In this embodiment, the utility model designs a circular cooling water pipe around the feed port 4 on the basis of the raw material pipe, so that the temperature around the feed port 4 is prevented from rising due to the high temperature heat transfer of the second section of the feed pipe. At the same time, the circular water pipe is distributed on the pipe wall around the upper feed port 4, and the side of the water pipe wall close to the inner wall of the feed port 4 is about 5MM, which can effectively cool the inner wall of the pipe around the feed port 4 and avoid water leakage due to the thin pipe wall of the water channel; and the side of the feed slope on the inner side of the upper opening feed pipe body 1 is connected to the second section of the feed pipe, so the contact area between the two is large, and heat transfer is good. The temperature rise is obvious. In order to effectively reduce the temperature of this part, a double-layer cooling water pipe is designed inside it. The angle of the inclined surface is taken into consideration when designing the water pipe. The water pipe arrangement angle is parallel to the inclined surface, and the distance from the water channel to the feed inclined surface is kept close, so as to maintain a uniform cooling effect on the inclined surface. In addition, this double-layer cooling water pipe is connected to the cooling water channel inside the raw material pipe. The cooling water channel inside the raw material pipe is an existing cooling water pipe in actual application. That is to say, in this utility model, the third cooling water channel 14 and the fourth cooling water channel 15 below are the cooling water channels inside the raw material pipe.

[0030] exist Figures 5 to 7 In the embodiment, a third cooling water channel 14 connected to the second cooling water channel 13 is provided in the front bottom side of the barrel 2, and a fourth cooling water channel 15 connected to the third cooling water channel 14 is provided in the rear bottom side of the barrel 2, wherein the third cooling water channel 14 is located in front of and below the barrel inner sleeve 3, and the fourth cooling water channel 15 is located behind and below the barrel inner sleeve 3;

[0031] The third cooling water channel 14 includes several cooling water pipes that are U-shaped and connected end to end. The water inlet of the third cooling water channel 14 is connected to the second water inlet joint 9, the water outlet of the third cooling water channel 14 is connected to the water inlet of the second cooling water channel 13, and the water outlet of the second cooling water channel 13 is connected to the water inlet of the fourth cooling water channel 15. The fourth cooling water channel 15 also includes several cooling water pipes that are U-shaped and connected end to end. The water outlet of the fourth cooling water channel 15 is connected to the second water outlet joint 10. The first water inlet joint 6, the first water outlet joint 7, the second water inlet joint 9 and the second water outlet joint 10 are all connected to the manual ball valve through a connecting pipe. The manual ball valve is installed on the main water channel of the original cooling material pipe of the twin-screw extruder. During production, the manual ball valve is opened and kept open. The cooling water flows through the material pipe loop water pipe and the double-layer water pipe to continuously cool the feed port 4 of the upper opening material pipe body 1, so that it is kept in a lower temperature range to prevent the additive from agglomerating.

[0032] Specifically, when the anti-clogging upper open material pipe is used, the manual ball valve is opened and kept open, and the cooling water flows through the first water inlet joint 6 into the first cooling water channel 12. Due to the zigzag design of the first cooling water channel 12, the cooling water cools the surrounding side of the feed port 4 of the upper open material pipe body 1; at the same time, the cooling water flows through the second water inlet joint 9 into the third cooling water channel 14, and then flows into the second cooling water channel 13 through the third cooling water channel 14. The double-layer cooling water pipe design in the second cooling water channel 13 makes the cooling effect of the feed inlet slope at the feed port 4 of the open material pipe body 1 good, so that it can be kept in a lower temperature range to prevent the additive from agglomerating.

[0033] In summary, the utility model is provided with a tortuous cooling water pipe on the wall of the material pipe around the feed port 4 of the upper opening material pipe body 1 of the first section and a double-layer cooling water pipe is designed on the inner side of the feed slope of the upper opening material pipe body 1, so as to prevent the additive from agglomerating at the feed port 4 due to high temperature, requiring shutdown for cleaning, wasting work time and causing material loss; it can also prevent the additive from agglomerating and blocking the feed port 4, avoiding the production of defective products caused by the inability of plastic particles to enter the extruder normally; it can also prevent the additive from agglomerating at the feed port 4, avoiding the extruder being stuck by the glass fiber, resulting in the need to remove the material pipe for cleaning, which is time-consuming and leads to loss of work time, thereby solving the problem that the screw will be twisted and deformed and scrapped when the extruder is seriously stuck, and is convenient for promotion and use.

[0034] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any equivalent modifications or variations made by persons skilled in the art without departing from the spirit and technical concepts disclosed herein shall be encompassed by the claims of the present invention.

Claims

1. An anti-clogging upper opening material pipe, comprising an upper opening material pipe body (1), the upper opening material pipe body (1) comprising a barrel (2) and a barrel inner sleeve (3) installed in the barrel (2), the top side of the barrel (2) being provided with a feed port (4), characterized in that: A first cooling water channel (12) is provided on the top side of the barrel (2) and is located on the periphery of the feed port (4). A second cooling water channel (13) is also provided on the top side of the barrel (2) and is located on the side of the feed port (4) and below the first cooling water channel (12); wherein the first cooling water channel (12) is a meandering cooling water pipe, and the second cooling water channel (13) is provided as a double-layer cooling water pipe parallel to each other on the side close to the second section of the feed pipe.

2. The anti-clogging upper opening material pipe according to claim 1, characterized in that: The top side of the barrel inner sleeve (3) is provided with a first opening (11) located directly below the feed port (4); one side of the barrel (2) and the barrel inner sleeve (3) is provided with a second opening (5) for the twin screws to pass through; the other side of the barrel (2) and the barrel inner sleeve (3) is provided with a third opening (8) for the twin screws to pass through; and a plurality of threaded holes are also provided on both side surfaces of the barrel (2).

3. The anti-clogging upper opening material pipe according to claim 1, characterized in that: The water inlet of the first cooling water channel (12) is connected to a first water inlet joint (6), and the water outlet of the first cooling water channel (12) is connected to a first water outlet joint (7).

4. The anti-clogging upper opening material pipe according to claim 3, characterized in that: A third cooling water channel (14) connected to the second cooling water channel (13) is provided in the front bottom side of the barrel (2), and a fourth cooling water channel (15) connected to the third cooling water channel (14) is provided in the rear bottom side of the barrel (2).

5. The anti-clogging upper opening material pipe according to claim 4, characterized in that: The third cooling water channel (14) comprises a plurality of cooling water pipes in a U-shape and connected end to end, the water inlet of the third cooling water channel (14) is connected to the second water inlet joint (9), and the water outlet of the third cooling water channel (14) is connected to the water inlet of the second cooling water channel (13).

6. The anti-clogging upper opening material pipe according to claim 5, characterized in that: The water outlet of the second cooling water channel (13) is connected to the water inlet of the fourth cooling water channel (15), and the fourth cooling water channel (15) also includes a plurality of cooling water pipes in a U-shape and connected end to end. The water outlet of the fourth cooling water channel (15) is connected to the second water outlet joint (10).

7. The anti-clogging upper opening material pipe according to claim 6, characterized in that: The first water inlet joint (6), the first water outlet joint (7), the second water inlet joint (9) and the second water outlet joint (10) are all connected to a manual ball valve via a connecting pipe, and the manual ball valve is installed on the main water channel of the raw cooling pipe of the twin-screw extruder.

Images