Water-filled screw barrel

Abstract

The present invention provides a screw barrel with water, which solves the problem that plastic raw materials with water will affect product quality and output in the regeneration and recycling granulation. Channel No. 1 and channel No. 2 are sequentially arranged in the barrel along the feeding direction, the feed port is located above channel No. 1, the diameter of channel No. 1 is larger than the outer diameter of the screw located in channel No. 1, a drainage groove is arranged at the bottom of channel No. 1, and the inner wall of channel No. 1 is provided with a spiral protrusion matched with the outer diameter of the screw, and the spiral protrusion extends from the front end to the end of channel No. 1. The raw material enters channel No. 1 through the feed port. Since the diameter of channel No. 1 is larger than the outer diameter of the screw, the screw cannot be rotated to feed the material and can only stir and extrude the raw material. The water in the raw material is discharged from the drainage groove, and the screw cooperates with the spiral protrusion to allow part of the raw material to be transported forward. The raw material is stirred and extruded every time it advances a certain distance, so that the moisture content of the raw material is reduced before melting.

Description

Technical Field

[0001] The invention relates to the technical field of screw barrels, in particular to a screw barrel with water for making materials. Background Art

[0002] Waste plastic products and films are not easy to degrade and pollute the environment. Generally, they are recycled and extruded again through a screw extruder and regenerated into granules. Plastic raw materials need to be cleaned before recycling and regenerating, so that the raw materials have a certain amount of moisture. Moreover, plastic raw materials will absorb moisture at room temperature. The moisture content of different plastic varieties in different environments ranges from 0.01% to 3.5%. If the moisture content is too high, after the plastic raw materials enter the barrel, part of the moisture will be discharged through the exhaust port after the plastic raw materials are heated as the screw moves forward. During the exhaust process, the exhaust port is blocked due to the phenomenon of material bubbling; and part of the moisture is mixed in the injection molded parts, thus affecting the quality of the product. Summary of the invention

[0003] In order to overcome the shortcomings of the background technology, the present invention provides a screw barrel with water, which solves the problem that plastic raw materials with water will affect product quality during recycling and granulation.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A water-carrying screw barrel comprises a barrel body, wherein the barrel body is provided with a feed port, wherein a channel No. 1 and a channel No. 2 are sequentially arranged inside the barrel body along the feeding direction, wherein the feed port is located above the channel No. 1, wherein the diameter of the channel No. 1 is larger than the outer diameter of the screw located in the channel No. 1, a drainage groove is arranged at the bottom of the channel No. 1, and the inner wall of the channel No. 1 is provided with a spiral protrusion matched with the outer diameter of the screw, wherein the spiral protrusion extends from the front end to the end of the channel No. 1.

[0006] The drainage groove is a through groove, and a No. 3 channel connected to the other end of the No. 1 channel is also provided in the cylinder, and the diameter of the No. 3 channel is smaller than the diameter of the No. 1 channel.

[0007] The spiral protrusion gradually rises from the bottom wall to the top wall of the first channel along the feeding direction.

[0008] The width of the spiral protrusion gradually increases along the feeding direction.

[0009] The spiral protrusion is welded with the No. 1 channel.

[0010] An arc-shaped groove is provided at one end of the second channel close to the first channel, and the depth of the arc-shaped groove gradually decreases along the feeding direction.

[0011] A partition area is provided between the head end and the tail end of the arc-shaped groove, the front end portion of the spiral protrusion contacts the tail end of the arc-shaped groove, and the other portion contacts the partition area.

[0012] The height of the head end of the arc-shaped groove is greater than the height of the tail end, and the width of the arc-shaped groove gradually increases from the head end to the tail end.

[0013] The second channel is also evenly distributed with spiral grooves.

[0014] Flanges are arranged at both ends of the cylinder.

[0015] The beneficial effects of the present invention are:

[0016] After the raw materials enter the No. 1 channel through the feed port, since the diameter of the No. 1 channel is larger than the outer diameter of the screw, the screw cannot rotate to feed the materials and can only stir and extrude the raw materials, so that the moisture in the raw materials is discharged from the drainage groove. The screw and the spiral protrusion cooperate to transport part of the raw materials forward. The raw materials are stirred and extruded every time they move forward a certain distance. The moisture content of the raw materials is reduced before they melt in the barrel, thereby ensuring the quality of the products after injection molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the present invention.

[0018] Figure 2 It is a cross-sectional schematic diagram of the present invention.

[0019] Figure 3 It is a cross-sectional schematic diagram of channel No. 1 of the present invention.

[0020] Figure 4 It is a cross-sectional schematic diagram of channel No. 2 of the present invention.

[0021] Cylinder body 1, feed port 2, No. 1 channel 3, No. 2 channel 4, drainage groove 5, spiral protrusion 6, No. 3 channel 7, arc groove 8, spiral groove 9, flange 10, partition area 11. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0023] In the embodiment, Figure 1 , Figure 2 , Figure 3As shown, the water-carrying screw barrel comprises a barrel 1, wherein the barrel 1 is provided with a feed port 2, wherein the barrel 1 is provided with a first channel 3 and a second channel 4 in sequence along the feeding direction, wherein the feed port 2 is located above the first channel 3, wherein the diameter of the first channel 3 is larger than the outer diameter of the screw located in the first channel 3, wherein a drainage groove 5 is provided at the bottom of the first channel 3, wherein the inner wall of the first channel 3 is provided with a spiral protrusion 6 matching the outer diameter of the screw, wherein the spiral protrusion 6 extends from the front end to the end of the first channel 3. After the raw material enters the first channel 3 through the feed port 2, since the diameter of the first channel 3 is larger than the outer diameter of the screw, the screw cannot be rotated to feed the raw material, and only stirs and extrude the raw material, so that the water in the raw material is discharged from the drainage groove, and the screw cooperates with the spiral protrusion 6 to transport part of the raw material forward, and stirs and extrude the raw material every time it advances a certain distance, and reduces the water content of the raw material before it melts in the barrel, thereby ensuring the quality of the product after injection molding.

[0024] In the embodiment, Figure 2 As shown, the drainage groove 5 is a through groove, and the barrel 1 is further provided with a No. 3 channel 7 connected to the other end of the No. 1 channel 3, and the diameter of the No. 3 channel 7 is smaller than the diameter of the No. 1 channel 3. After the raw material enters the No. 1 channel 3 through the feed port 2, it is not easy for the raw material to enter the No. 3 channel 7 during the feeding process of the screw, resulting in a material return phenomenon.

[0025] In the embodiment, Figure 1 , Figure 2 As shown, the spiral protrusion 6 gradually rises from the bottom wall to the top wall of the first channel 3 along the feeding direction. The raw material gradually moves away from the bottom of the first channel 3 during the conveying process, so that the raw material is not easy to contact with the squeezed water, thereby ensuring the dryness of the raw material.

[0026] In the embodiment, Figure 1 , Figure 2 As shown, the width of the spiral protrusion 6 gradually increases along the feeding direction. After the raw material is dehydrated, the width of the spiral protrusion W1 to W2 gradually increases to increase the conveying amount of the raw material and improve the feeding efficiency.

[0027] In the embodiment, the spiral protrusion 6 and the first channel 3 are welded together, so the whole process is convenient and the cost is low.

[0028] In the embodiment, Figure 1 , Figure 2 , Figure 4 As shown, the second channel 4 is provided with an arc groove 8 at one end close to the first channel 3, and the depth of the arc groove 8 gradually decreases along the feeding direction. After the raw materials enter the arc groove 8, part of the raw materials are retained in the arc groove 8. When the raw materials are fed into the arc groove 8 again, the raw materials are squeezed against each other and dehydrated again, and the water flows into the first channel 3 along the inclined surface of the arc groove 8.

[0029] In the embodiment, Figure 1 , Figure 2 , Figure 4 As shown, a partition area 11 is provided between the head end and the tail end of the arc groove 8, the front end portion of the spiral protrusion 6 contacts the tail end of the arc groove 8, and the other portion contacts the partition area 11; the height of the head end of the arc groove 8 is greater than the height of the tail end, and the width of the arc groove 8 gradually increases from the head end to the tail end. During the process of conveying the raw materials from the No. 1 channel to the No. 2 channel, the contact portion of the spiral protrusion 6 with the arc groove 8 will allow the raw materials to directly enter the rear end of the arc groove, and the contact portion of the spiral protrusion 6 with the partition area 11 will be conveyed forward a distance and then enter the front end of the arc groove 8, thereby improving the conveying efficiency of the raw materials.

[0030] In the embodiment, Figure 1 , Figure 2 As shown, spiral grooves 9 are evenly distributed in the second channel 4. The friction between the plastic raw material and the second channel 4 is increased, so that the raw material is not easy to slip, and the raw material is convenient to move forward.

[0031] In the embodiment, Figure 2 As shown, flanges 10 are provided at both ends of the barrel 1. The barrel can be connected with the barrel through the flange 10, which is convenient for processing and transportation and has low manufacturing cost.

[0032] Obviously, the above embodiments of the present invention are merely examples for illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to exhaust all implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. A water-carrying screw barrel, comprising a barrel (1), wherein the barrel (1) is provided with a feed inlet (2), Features: A first channel (3) and a second channel (4) are sequentially arranged in the barrel (1) along the feeding direction, the feed port (2) is located above the first channel (3), the diameter of the first channel (3) is larger than the outer diameter of the screw located in the first channel (3), a drainage groove (5) is arranged at the bottom of the first channel (3), and a spiral protrusion (6) matching the outer diameter of the screw is arranged on the inner wall of the first channel (3), and the spiral protrusion (6) extends from the front end to the end of the first channel (3); The spiral protrusion (6) gradually rises from the bottom wall to the top wall of the first channel (3) along the feeding direction; The width of the spiral protrusion (6) gradually increases along the feeding direction.

2. The water-carrying screw barrel as claimed in claim 1, Features: The drainage groove (5) is a through groove, and a third channel (7) communicating with the other end of the first channel (3) is also provided in the cylinder (1), and the diameter of the third channel (7) is smaller than the diameter of the first channel (3).

3. The water-carrying screw barrel as claimed in claim 1, Features: The spiral protrusion (6) and the first channel (3) are welded together.

4. The water-carrying screw barrel as claimed in claim 1, Features: An arc-shaped groove (8) is provided at one end of the second channel (4) close to the first channel (3), and the depth of the arc-shaped groove (8) gradually decreases along the feeding direction.

5. The water-carrying screw barrel as claimed in claim 4, Features: A partition area (11) is provided between the head end and the tail end of the arc-shaped groove (8), the front end portion of the spiral protrusion (6) contacts the tail end of the arc-shaped groove (8), and the other front end portion of the spiral protrusion (6) contacts the partition area (11).

6. The water-carrying screw barrel as claimed in claim 5, Features: The height of the head end of the arc-shaped groove (8) is greater than the height of the tail end, and the width of the arc-shaped groove (8) gradually increases from the head end to the tail end.

7. The water-carrying screw barrel as claimed in claim 1, Features: The second channel (4) is also evenly distributed with spiral grooves (9).

8. The water-carrying screw barrel as claimed in claim 1, Features: Flanges (10) are provided at both ends of the cylinder (1).

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