Exhaust type side feeding barrel combined structure of double-screw extruder

Abstract

The utility model discloses an exhaust type side feeding cylinder body combined structure of a double-screw extruder, which comprises a side exhaust cylinder body, an exhaust material stopping block and a side feeding cylinder body, a cooling water channel II is arranged in the cylinder body wall of the side exhaust cylinder body, a heater mounting screw hole II is formed in the outer wall of the cylinder body, a thermocouple mounting hole II is formed in the lower part of the cylinder body, and a hard alloy sleeve II is embedded in the cylinder body; the exhaust material stopping block is fixedly arranged at the side opening of the side exhaust cylinder body and is provided with a side exhaust hole corresponding to the side opening of the side exhaust cylinder body; a cooling water channel I is arranged in the cylinder wall of the side feeding cylinder, a heater mounting screw hole I is formed in the outer wall of the cylinder, a thermocouple mounting hole I is formed in the lower part of the cylinder, a hard alloy sleeve I is embedded in the cylinder, and a side feeding machine mounting hole of the side feeding cylinder is connected with a side feeding machine. The barrel combined structure can discharge water vapor and volatile matters generated after the filling material is heated in time, so that the mixing modification performance of a high polymer material after a specific material is added is improved.

Description

Technical Field

[0001] This utility model relates to a twin-screw extruder, and more particularly to a combined structure of a vented side-feeding cylinder for a twin-screw extruder. Background Technology

[0002] To meet the performance requirements of engineering materials, polymer materials require the addition of appropriate fillers to increase toughness, strength, rigidity, flame retardancy, and reduce raw material costs. After entering the feed inlet of a twin-screw extruder, the polymer material is heated and kneaded until fully melted. Then, appropriate fillers are added, such as toughening agents, fossil powder, calcium carbonate, short glass fibers, and flame retardants. Through the addition of specific materials, the polymer material undergoes kneading and modification to obtain engineering materials with excellent properties.

[0003] When filler materials are added to fully molten polymer materials, they will generate water vapor and volatiles after heating. These water vapor and volatiles will create air resistance to the continuous addition of filler materials, thus affecting the stability of the filler materials and causing uneven quality of the mixed and modified engineering materials. Summary of the Invention

[0004] Purpose of the utility model: The purpose of this invention is to provide a vented side-feeding cylinder assembly structure for a twin-screw extruder. This vented side-feeding cylinder assembly allows the water vapor and volatiles generated after the filler material is heated to be discharged in a timely manner, thereby improving the performance of polymer materials after mixing and modification with the addition of specific materials.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A combined structure of a vented side-feeding cylinder for a twin-screw extruder, characterized in that it includes a side venting cylinder, a venting baffle block, and a side-feeding cylinder, wherein the side venting cylinder and the side-feeding cylinder are connected and fixed by fasteners;

[0007] The side exhaust cylinder has several cooling water channels II inside its cylinder wall and several heater mounting screw holes II on its outer cylinder wall. The heater mounting screw holes II are used to fix the heater to the cylinder wall of the side exhaust cylinder with screws. The lower part of the side exhaust cylinder has a thermocouple mounting hole II. The thermocouple is installed at the thermocouple mounting hole II. The hard alloy sleeve II is inlaid inside the cylinder of the side exhaust cylinder.

[0008] The exhaust baffle block is installed and fixed at the side opening of the side exhaust cylinder body, and the exhaust baffle block is provided with a side exhaust hole corresponding to the side opening of the side exhaust cylinder body;

[0009] The barrel wall of the side feeding barrel is provided with a plurality of cooling water channels I, and the outer wall of the side feeding barrel is provided with a plurality of heater mounting screw holes I, which are used for screwing the heaters to the barrel wall of the side feeding barrel.

[0010] Further, the barrel flange II at one end of the side feeding barrel is provided with a plurality of screw through holes I and two positioning pin holes, and the barrel flange III at one end of the side exhaust barrel is provided with a plurality of screw holes II and two positioning pin holes.

[0011] Further, the barrel flange IV at the other end of the side exhaust barrel is provided with a plurality of screw through holes II.

[0012] Further, the barrel flange I at the other end of the side feeding barrel is provided with a plurality of screw holes I.

[0013] Further, the side exhaust hole of the side exhaust baffle is provided with a groove on the side close to the side opening of the barrel.

[0014] Further, the side exhaust hole of the side exhaust baffle is provided with a groove on the side close to the side opening of the barrel.

[0015] Beneficial effects: The exhaust type side feeding barrel combination structure of the double screw extruder can effectively discharge the volatile components contained in the molten high molecular material from the side exhaust hole of the exhaust baffle at the side of the side exhaust barrel, and can effectively discharge the water vapor and volatile components generated after the filling material is added to the fully molten high molecular material from the side exhaust hole of the exhaust baffle at the side of the side exhaust barrel, so as to facilitate the addition of the filling material at the side feeding machine mounting hole of the side feeding barrel, make the quality of the modified engineering material uniform, meet the modification process requirements, and obtain the engineering material with stable quality under the pushing and mixing action of the double screw in the barrel of the double screw extruder. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view of the exhaust type side feeding barrel combination structure of the double screw extruder.

[0017] Figure 2 It is a front view of the exhaust type side feeding barrel combination structure of the double screw extruder.

[0018] Figure 3 It isFigure 1 View from middle A-A direction.

[0019] Figure 4 As Figure 1 View from middle B-B direction.

[0020] Figure 5 As

[0021] Figure 6 As Figure 5 View from middle C-C direction.

[0022] Figure 7 As Figure 6 View from middle D direction.

[0023] In the figure: 1- screw hole I; 2- side feeding cylinder; 3- cylinder flange I; 4- side feeding machine mounting hole; 5- cylinder flange II; 6- screw through hole I; 7- fastening screw; 8- screw hole II; 10- positioning pin; 11- cylinder flange III; 12- exhaust material blocking block; 13- side exhaust cylinder; 14- screw through hole II; 15- cylinder flange IV; 16- hard alloy sleeve I; 17- cooling water channel I; 18- heater mounting screw hole I; 19- hard alloy sleeve II; 20- cooling water channel II; 21- heater mounting screw hole II; 22- thermocouple mounting hole I; 23- thermocouple mounting hole II; 24- screw through hole; 25- tapping hole; 26- side exhaust hole; 27- groove. DETAILED DESCRIPTION

[0024] The utility model will be explained further in connection with the drawings.

[0025] As Figure 1 and 2 As shown in the utility model discloses a double-screw extruder exhaust type side feeding cylinder combination structure, including side exhaust cylinder 13, exhaust material blocking block 12, side feeding cylinder 2. Side exhaust cylinder 13 and side feeding cylinder 2 are connected and fixed through fastener.

[0026] In the embodiment, the cylinder flange II 5 of one end of side feeding cylinder 2 has a plurality of screw through holes I 6 and two positioning pin holes, and the cylinder flange III 11 of one end of side exhaust cylinder 13 has a plurality of screw holes II 8 and two positioning pin holes, and the fastener includes a plurality of fastening screws 7 and two positioning pins 10, the fastening screw 7 is matched with the screw through hole I 6 and the screw hole II 8, the positioning pin 10 is matched with the positioning pin hole, and the cylinder flange II 5 of the side feeding cylinder 2 is tightly connected and fixed with the cylinder flange III 11 of the side exhaust cylinder 13.

[0027] AsFigure 1 and 4 As shown, there are several screw through holes II14 on the cylinder flange IV15 at the other end of the side exhaust cylinder 13. The screw through holes II14 can be used to install corresponding screws to connect with the adjacent cylinder. The side exhaust cylinder 13 has several cooling water channels II20 inside its cylinder wall. Cooling water is used to regulate the temperature of the side exhaust cylinder 13 to prevent it from getting too high. The outer wall of the side exhaust cylinder 13 has several heater mounting screw holes II21. The heater mounting screw holes II21 are used to fix the heater to the cylinder wall of the side exhaust cylinder 13 with screws. The heater heats and keeps the side exhaust cylinder 13 warm. The lower part of the side exhaust cylinder 13 has a thermocouple mounting hole II23. The thermocouple is installed in the thermocouple mounting hole II23. The thermocouple is used to measure and regulate the temperature of the side exhaust cylinder 13. The side exhaust cylinder 13 has a hard alloy sleeve II19 embedded inside its cylinder. When the twin screws of the twin screw extruder rotate and push the molten polymer material inside the side exhaust cylinder 13, the hard alloy sleeve II19 serves to resist wear and extend the service life of the side exhaust cylinder 13.

[0028] like Figures 5-7 As shown, the corresponding screws install and fix the exhaust baffle 12 to the side opening of the side exhaust cylinder 13 through several screw through holes 24. The exhaust baffle 12 is provided with a side exhaust hole 26 corresponding to the side opening of the side exhaust cylinder 13. Water vapor and volatiles in the side exhaust cylinder 13 can be discharged from the side exhaust hole 26 of the exhaust baffle 12. A groove 27 is provided on the side of the side exhaust hole 26 of the exhaust baffle 12 near the side opening of the cylinder 13. The groove 27 of the exhaust baffle 12 forms a cavity. When the twin screws of the twin screw extruder rotate and push the molten polymer material in the side exhaust cylinder 13, the cavity can block and restrict the molten polymer material from overflowing from the side exhaust hole 26. The exhaust baffle block 12 has set screw holes 25 on both sides of the side exhaust hole 26. The exhaust baffle block 12 can be pushed out from the side opening of the side exhaust cylinder 13 by using set screws through the set screw holes 25, which is convenient for maintenance.

[0029] like Figure 1 and 3As shown, the flange I3 of the other end of the side feeding barrel 2 has a plurality of screw holes I1, which can be connected to the adjacent barrel by corresponding screws. The barrel wall of the side feeding barrel 2 is provided with a plurality of cooling water channels I17, which can adjust the temperature of the side feeding barrel 2. The outer wall of the barrel of the side feeding barrel 2 is provided with a plurality of heater mounting screw holes I18, which are used to fix the heater on the barrel wall of the side feeding barrel 2 by screws. The heater heats and insulates the side feeding barrel 2. The lower part of the side feeding barrel 2 is provided with a thermocouple mounting hole I22, and the thermocouple is mounted in the thermocouple mounting hole I22. The thermocouple is used to measure and adjust the temperature of the side feeding barrel 2. The barrel of the side feeding barrel 2 is inlaid with a hard alloy sleeve I16. When the double screw of the double screw extruder rotates and pushes the blended material of the polymer material and the filling material in the side feeding barrel 2, the hard alloy sleeve I16 can prolong the service life of the side feeding barrel 2 by resisting wear. The side feeding machine mounting hole 4 of the side feeding barrel 2 is connected to the side feeding machine. The side feeding machine forcibly pushes the corresponding filling material, such as toughening material, fossil powder, calcium carbonate, short glass fiber, flame retardant material, etc., into the side feeding barrel 2. The filling material is added to the molten polymer material. The steam and volatile matter generated by the filling material after being heated are discharged from the side exhaust hole 26 of the exhaust block 12 of the side exhaust barrel 13. After the devolatilized polymer material and the blended material of the filling material are continuously pushed and mixed by the double screw in the barrel of the double screw extruder, the modified material meeting the actual needs of engineering can be obtained.

[0030] The function of the double screw extruder exhaust type side feeding barrel combination is as follows:

[0031] After the polymer material enters the barrel feeding port of the double screw extruder, the polymer material is pushed to the side exhaust barrel 13 under the action of heating and the pushing and mixing of the double screw in the barrel of the double screw extruder. The volatile matter generated by the polymer material after melting is discharged from the side exhaust hole 26 of the exhaust block 12. The devolatilized molten polymer material is pushed forward by the double screw to the side feeding barrel 2. The side feeding machine forcibly pushes the corresponding filling material, such as toughening material, fossil powder, calcium carbonate, short glass fiber, flame retardant material, etc., into the molten polymer material from the side feeding machine mounting hole 4. The steam and volatile matter generated by the filling material after being heated are discharged from the side exhaust hole 26 of the exhaust block 12 of the side exhaust barrel 13. The side feeding machine can continuously and stably push the filling material into the side feeding barrel 2. After the devolatilized polymer material and the blended material of the filling material are pushed and mixed by the double screw in the barrel of the double screw extruder, the excellent engineering material can be obtained by extruding from the head of the double screw extruder.

[0032] The above merely is preferred implementation manner of the present application, it should be pointed out, for ordinary skilled person in the technical field, on the premise of not departing from the principle of the present application, can also make several improvements and refinements, these improvements and refinements also should be regarded as the protection scope of the present application.

Claims

1. A twin screw extruder vented side-fed barrel assembly, characterized by: It comprises a side exhaust cylinder (13), an exhaust material blocking block (12) and a side feeding cylinder (2), the side exhaust cylinder (13) and the side feeding cylinder (2) are fixed and connected by fasteners; A plurality of cooling water channels II (20) are arranged in the cylinder wall of the side exhaust cylinder (13), a plurality of heater mounting screw holes II (21) are arranged on the outer wall of the cylinder of the side exhaust cylinder (13), the heater mounting screw holes II (21) are used for screwing the heater to be fixed and mounted on the cylinder wall of the side exhaust cylinder (13), a thermocouple mounting hole II (23) is arranged at the lower part of the side exhaust cylinder (13), a thermocouple is mounted at the thermocouple mounting hole II (23), and a hard alloy sleeve II (19) is inlaid in the cylinder of the side exhaust cylinder (13); The exhaust material blocking block (12) is fixed and mounted at the side opening of the side exhaust cylinder (13), the exhaust material blocking block (12) is provided with a side exhaust hole (26) corresponding to the side opening of the side exhaust cylinder (13), and top screw holes (25) are arranged on both sides of the side exhaust hole (26) of the exhaust material blocking block (12). A plurality of cooling water channels I (17) are arranged in the cylinder wall of the side feeding cylinder (2), a plurality of heater mounting screw holes I (18) are arranged on the outer wall of the cylinder of the side feeding cylinder (2), the heater mounting screw holes I (18) are used for screwing the heater to be fixed and mounted on the cylinder wall of the side feeding cylinder (2), a thermocouple mounting hole I (22) is arranged at the lower part of the side feeding cylinder (2), a thermocouple is mounted at the thermocouple mounting hole I (22), a hard alloy sleeve I (16) is inlaid in the cylinder of the side feeding cylinder (2), and a side feeding machine mounting hole (4) of the side feeding cylinder (2) is connected with a side feeding machine.

2. A twin-screw extruder vented side-fed barrel assembly according to claim 1, characterized in that: The cylinder flange II (5) at one end of the side feeding cylinder (2) is provided with a plurality of screw through holes I (6) and two positioning pin holes, the cylinder flange III (11) at one end of the side exhaust cylinder (13) is provided with a plurality of screw holes II (8) and two positioning pin holes, the fasteners comprise a plurality of fastening screws (7) and two positioning pins (10), the fastening screws (7) are matched with the screw through holes I (6) and the screw holes II (8), the positioning pins (10) are matched with the positioning pin holes, and the cylinder flange II (5) of the side feeding cylinder (2) and the cylinder flange III (11) of the side exhaust cylinder (13) are fixed and connected tightly.

3. A twin-screw extruder vented side-fed barrel assembly according to claim 2, characterized in that: The cylinder flange IV (15) at the other end of the side exhaust cylinder (13) is provided with a plurality of screw through holes II (14).

4. A twin-screw extruder vented side-fed barrel assembly according to claim 2, wherein: The cylinder flange I (3) at the other end of the side feeding cylinder (2) is provided with a plurality of screw holes I (1).

5. A twin-screw extruder vented side-fed barrel assembly according to claim 1, wherein: The side exhaust hole (26) of the exhaust material blocking block (12) is provided with a groove (27) on the side close to the side opening of the side exhaust cylinder (13).

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