CN110654012A - Building block segmented barrel for counter-parallel twin-screw extruder - Google Patents

Abstract

The invention discloses a building block segmented barrel for a counter-parallel twin-screw extruder, comprising a feeding port barrel section, one end of the feeding port barrel section is fixedly connected with a conventional heating zone barrel section through a flange, and the One end of the conventional heating zone barrel section away from the feed port barrel section is fixedly connected with a water-cooled tank heating section barrel section through a flange, and the water-cooled tank heating section barrel section includes a water-cooled tank heating zone barrel and a first spiral. Tank; the barrel section of the feed inlet, the barrel section of the conventional heating area, the barrel section of the heating area with a water-cooled tank and the barrel section of the discharge outlet are all connected by flanges, which ensures the sealing effect and at the same time, when the barrel section is damaged, Only replacing the vulnerable end can greatly reduce the use and maintenance cost. At the same time, in conjunction with the first spiral groove on the barrel section of the heating zone with water cooling groove, the copper pipe is wound on the first spiral groove, and the combination of water cooling and air cooling is used. The cooling mode is more effective to control the temperature to prevent paste, reduce the number of cleanings, and prolong the use time.

Description

Building block segmented barrel for counter-parallel twin-screw extruder

technical field

The invention belongs to the technical field of floor processing machinery, in particular to a building block segmented barrel for a counter-rotating parallel twin-screw extruder.

Background technique

Both LVT plastic floor and SPC floor are a kind of PVC floor. The main raw materials are polyvinyl chloride, wood powder and calcium powder. PVC floor has the functions of lightness, wear resistance, good elasticity, fire and flame retardant, water absorption and moisture resistance, sound absorption and noise prevention, especially simple and convenient installation without pollution. After just a few years of development, PVC flooring has developed from a single imitation marble effect to make hard floors to make various soft and hard floors with various wall thicknesses, anti-wood floors, foamed lightweight floors, and environmentally friendly methane-free plastic wood. Textured floors, etc. It has been widely recognized and widely used in large and medium cities at home and abroad.

The process of floor production can be summarized as: the raw material is sheared and meshed by the screw in the extruder barrel under the condition of high temperature and vacuum negative pressure, so as to form a paste (we call it plasticization), and then pass through the mold. Shaped and extruded into a sheet, which is formed by a calender in a hot state, and at the same time, the face is covered with a film that needs to imitate marble or wood texture, and the backside is pressed and glued. . Go to the UV paint rack coating production line to carry out wear protection treatment on the surface. Afterwards, the substrate is subjected to slicing and grooving processing by a slotting machine, and finally the finished product is packaged.

Therefore, the service life of the barrel in the extruder barrel directly determines the quality and output of the product. Most of the extruders on the market are 92/188 counter-rotating conical twin-screw extruders and 110/220 counter-rotating conical twin-screw extruders, or 115 counter-rotating parallel twin-screw extruders, 130 counter-rotating twin-screw extruders Parallel twin-screw extruder, 135 counter-rotating parallel twin-screw extruder.

The above-mentioned conical twin or flat twin extruder has limited output, the largest such as 135 counter-rotating parallel twin-screw extruder has a barrel center distance of 110mm, a screw length-diameter ratio of 28:1, and an output of 40 tons/day. The rest of the production is smaller. Because the raw material contains a large amount of calcium powder (calcium carbonate), the raw material has high hardness and the barrel is easy to wear. Usually, it needs to be replaced in 3-6 months, and the cost is too high. Small and medium-sized flooring companies simply cannot afford it. Most of the existing barrels are cooled by external fans, and the cooling effect is average. If the temperature cannot be cooled in time, the internal temperature of the barrel will be super high, causing the material to be browned. At this time, it is necessary to stop the machine to disassemble and clean the barrel screw, which is time-consuming and labor-intensive.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a block segmented barrel for a counter-rotating parallel twin-screw extruder, so as to solve the problems raised in the above-mentioned background art.

To achieve the above object, the present invention has adopted the following technical solutions:

A building block segmented barrel for a counter-parallel twin-screw extruder, including a feeding port barrel section, one end of the feeding port barrel section is fixedly connected with a conventional heating zone barrel section through a flange, and the conventional heating zone barrel section is One end of the barrel section away from the feed port is fixedly connected with a barrel section with a water-cooled tank heating section through a flange, and the barrel section with a water-cooled tank heating section includes a barrel with a water-cooled tank heating section and a first spiral groove. The first spiral groove is evenly opened on the outer side wall of the cylinder with the water-cooled tank heating zone, and the end of the cylinder with the water-cooled tank heating zone away from the conventional heating zone is fixedly connected with a discharge port cylinder through a flange. .

Preferably, the feeding port barrel section includes a feeding barrel body and a feeding port, and the feeding port is opened on the front side of the outer side wall of the feeding barrel body.

Preferably: the conventional heating zone barrel section includes a plurality of conventional heating zone barrels, the number of the conventional heating zone barrels is not less than three, and the conventional heating zone barrels close to the feed barrel pass through The flange is fixedly connected with the feed cylinder, and the two adjacent conventional heating zone cylinders are fixedly connected by the flange.

Preferably, one end of the cylindrical body with the water-cooled tank heating zone close to the conventional heating zone cylindrical body is fixedly connected to the conventional heating zone cylindrical body through a flange.

Preferably: the barrel section of the discharge port includes a discharge barrel, a second spiral groove and a discharge port, and the end of the discharge barrel close to the heating zone with a water-cooled tank is connected to the belt through a flange. The cylinder body of the heating zone of the water-cooled tank is fixedly connected.

Preferably, the second helical grooves are evenly opened on the outer sidewall of the discharge cylinder.

Preferably, the discharge port is arranged at one end of the discharge cylinder away from the cylinder with the water-cooled tank heating zone.

The technical effect and advantage of the present invention: Compared with the prior art, the block segmented barrel for the counter-parallel twin-screw extruder proposed by the present invention has the following advantages:

The barrel section of the feed inlet, the barrel section of the conventional heating zone, the barrel section of the heating zone with a water cooling tank and the barrel section of the discharge outlet are all connected by flanges, which ensures the sealing effect, and only replaces the barrel section when it is damaged. The vulnerable end can greatly reduce the cost of use and maintenance. At the same time, in conjunction with the first spiral groove on the barrel section of the heating section with a water cooling groove, the copper tube is wound on the first spiral groove, and the combined cooling of water cooling and air cooling is used. Mode, more effective temperature control to prevent paste, reduce cleaning times, prolong use time, and achieve the purpose of extending the life of the barrel.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Figure 2 is a schematic structural diagram of a discharge cylinder in the present invention.

In the figure: 1, the barrel section of the feeding port; 11, the feeding barrel body; 12, the feeding port; 2, the barrel section of the conventional heating area; 21, the barrel section of the conventional heating area; 31. Cylinder body with water cooling tank heating zone; 32. The first spiral groove; 4. The barrel section of the discharge port; 41, The discharge cylinder body; 42, The second spiral groove; 43, The discharge port.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. The specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The present invention provides a block segmented barrel for a counter-rotating parallel twin-screw extruder as shown in Figs. 1-2, comprising a feeding port barrel section 1, and one end of the feeding port barrel section 1 is fixed by a flange A conventional heating zone barrel section 2 is connected, and one end of the conventional heating section barrel section 2 away from the feed port barrel section 1 is fixedly connected with a water-cooled tank heating section barrel section 3 through a flange. The cylinder section 3 includes a cylinder body 31 with a water-cooled tank heating zone and a first helical groove 32. The first helical grooves 32 are evenly opened on the outer sidewall of the cylinder body 31 with a water-cooled groove heating zone. One end of the barrel section 3 away from the conventional heating zone barrel section 2 is fixedly connected with the outlet barrel section 4 through a flange.

Preferably, the feeding port barrel section 1 includes a feeding barrel body 11 and a feeding port 12 , and the feeding port 12 is opened on the front side of the outer side wall of the feeding barrel body 11 .

By adopting the above technical solution, the feeding port 12 is used to pour the material into the barrel.

Preferably: the conventional heating area barrel section 2 includes a plurality of conventional heating area barrels 21 , the number of the conventional heating area barrels 21 is not less than three, and the conventional heating area barrels 21 close to the feeding barrel 11 . The heating zone cylinder 21 is fixedly connected to the feeding cylinder 11 through a flange, and two adjacent conventional heating zone cylinders 21 are fixedly connected through a flange.

By adopting the above technical solution, the number of the conventional heating zone cylinders 21 can be set according to the actual situation, so as to achieve an appropriate cylinder length ratio, and at the same time, each conventional heating zone cylinders 21 are connected by flanges, which is convenient for damage or maintenance. At the same time, after the damage, only the damaged cylinder needs to be replaced, which is conducive to the reuse of resources.

Preferably, one end of the heating zone cylinder 31 with a water-cooling tank close to the conventional heating zone cylinder 21 is fixedly connected to the conventional heating zone cylinder 21 through a flange.

By adopting the above technical solution, it can be disassembled when damaged or repaired, and at the same time, after the damage, only the damaged cylinder needs to be replaced, which is beneficial to the reuse of resources.

Preferably: the discharge port cylinder section 4 includes a discharge cylinder body 41, a second spiral groove 42 and a discharge port 43, and the discharge cylinder body 41 is close to one end of the cylinder body 31 with the water-cooled groove heating zone. It is fixedly connected to the cylindrical body 31 with the heating zone with water cooling tank through a flange.

By adopting the above technical scheme, it can be disassembled when damaged or repaired, and at the same time, after damage, only the damaged cylinder needs to be replaced, which is beneficial to the reuse of resources.

Preferably, the second helical grooves 42 are evenly opened on the outer sidewall of the discharge cylinder 41 .

By adopting the above technical solution, the copper pipe can be wound on the second helical groove 442 before winding the copper pipe on the first helical groove 32 to increase the contact area with the water-passing copper pipe and increase the heat dissipation effect.

Preferably, the discharge port 43 is provided at the end of the discharge cylinder 41 away from the cylinder 31 with the water-cooled tank heating zone.

By adopting the above technical solution, the material entering the barrel can be made to leave the barrel through the discharge port 43 .

In this embodiment: the aspect ratio of the barrel of the present invention is 30-35:1, the center distance is 110mm, and the advantage of the long barrel is that the time and walking distance of the material in the barrel are lengthened, so that it is fully plasticized and the product is better performance.

Working principle: The barrel section 1 of the feeding port, the barrel section 2 of the conventional heating area, the barrel section 3 of the heating area with a water cooling tank and the barrel section 4 of the discharge port are all connected by flanges, which ensure the sealing effect. If the cylinder section 1 of the feeding port, the cylinder section 2 of the conventional heating area, the cylinder section 3 of the heating area with a water cooling tank, and the cylinder section 4 of the discharge port are added together, they can generally be divided into 3-8 sections. , only the vulnerable end is replaced, which can greatly reduce the use and maintenance costs. At the same time, in conjunction with the first spiral groove 32 on the barrel section 3 of the heating zone with a water-cooled groove, the copper pipe is wound on the first spiral groove 32, and the water-cooled and The cooling mode combined with air cooling can effectively control the temperature to prevent paste, reduce the number of cleanings, prolong the use time, and achieve the purpose of prolonging the service life of the barrel.

Finally, it should be noted that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the The technical solutions described in the foregoing embodiments can be modified, or some technical features thereof can be equivalently replaced, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included. within the protection scope of the present invention.

Claims (7)

1. The building block segmented barrel for the counter-parallel twin-screw extruder comprises a feeding port barrel section (1), characterized in that: one end of the feeding port barrel section (1) is fixedly connected with a flange through a flange. Conventional heating zone barrel section (2), one end of the conventional heating section barrel section (2) away from the feed port barrel section (1) is fixedly connected with a water-cooled tank heating section barrel section (3) through a flange, so The cylindrical section (3) with a heating zone with a water-cooling groove comprises a cylinder (31) with a heating zone with a water-cooling groove and a first helical groove (32), and the first helical grooves (32) are evenly opened in the heating zone with a water-cooling groove On the outer side wall of the cylinder (31), the end of the cylinder section (3) with the water-cooled tank heating zone away from the conventional heating zone cylinder section (2) is fixedly connected with a discharge port cylinder section (4) through a flange. 2. The building block segmented barrel for a counter-parallel twin-screw extruder according to claim 1, characterized in that: the feeding port barrel section (1) comprises a feeding barrel (11) and a feeding A port (12), the feeding port (12) is opened on the front side of the outer side wall of the feeding cylinder (11). 3. The building block segmented barrel for a counter-parallel twin-screw extruder according to claim 2, wherein the conventional heating zone barrel section (2) comprises a plurality of conventional heating zone barrels (21) , the number of the conventional heating zone cylinders (21) is not less than three, and the conventional heating zone cylinders (21) close to the feeding cylinder (11) are connected to the feeding cylinder through flanges (11) Fixed connection, the two adjacent conventional heating zone cylinders (21) are fixedly connected by flanges. 4. The building block segmented barrel for a counter-parallel twin-screw extruder according to claim 3, characterized in that: the barrel (31) in the heating zone with a water-cooling tank is close to the barrel (31) in the conventional heating zone. One end of 21) is fixedly connected to the conventional heating zone cylinder (21) through a flange. 5. The building block segmented barrel for a counter-parallel twin-screw extruder according to claim 4, characterized in that: the outlet barrel section (4) comprises a discharge barrel (41), a second barrel Spiral groove (42) and discharge port (43), one end of the discharge cylinder body (41) close to the cylinder body (31) with the heating zone with water-cooling groove is connected to the cylinder body with the heating zone with water-cooling groove through a flange (31) Fixed connection. 6. The building block segmented barrel for a counter-parallel twin-screw extruder according to claim 5, wherein the second helical groove (42) is evenly opened on the discharge barrel (41) the outer side wall. 7. The building block segmented barrel for a counter-parallel twin-screw extruder according to claim 5, characterized in that: the discharge port (43) is provided on the discharge cylinder (41) away from the One end of the cylindrical body (31) with the water-cooled tank heating zone.

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