Discharging assembly for extruder

Abstract

The utility model relates to the field of extruders, in particular to a discharging assembly for an extruder, which comprises a discharging pipe and a pressurizing conveying cylinder, a feeding end and a discharging end are respectively formed at two ends of the discharging pipe, a feeding port communicated with the discharging pipe is arranged inside the feeding end, a discharging port communicated with the discharging pipe is arranged inside the discharging end, and a discharging port communicated with the discharging pipe is arranged inside the pressurizing conveying cylinder. The feeding port penetrates through the hollow discharging pipe and is communicated with the discharging port to form a discharging channel, the feeding port is gradually reduced from large to small and is communicated with the discharging pipe to form a convergent and extended shape, the end, away from the discharging pipe, of the discharging end expands and extends outwards, and the pressurizing conveying cylinder is installed at the feeding end of the discharging pipe. Materials can conveniently enter the discharging pipe through the feeding port, the gradually-reduced cross section of the feeding end exerts certain pressure on the materials, the materials stably flow in the discharging pipe, blocking of the materials is reduced, the end, away from the discharging pipe, of the discharging end expands and extends outwards, the materials are discharged more smoothly, and the discharging efficiency is improved. The extrusion efficiency and the finished product quality are improved.

Description

Technical Field

[0001] The utility model relates to the field of extruders, in particular to a discharging component for an extruder. Background Art

[0002] As an indispensable and key component in extruder systems, discharge valves are widely used in the production and manufacturing of plastics, rubber, food, pharmaceuticals, and chemicals. Their primary function is to control the inflow, outflow, interception, and flow regulation of fluid media (such as molten plastic, rubber, and food slurries), ensuring the continuity and stability of the production process. During the operation of an extruder, the discharge valve bears the heavy responsibility of controlling the material flow, allowing the extruder to drive the fluid media through the discharge valve for extrusion.

[0003] An extruder is a core piece of equipment in the plastics processing industry. Its operating principle is to convey, compact, and plasticize a fluid medium through a screw, ultimately extruding it through a die under pressure. Within the extruder's structure, the discharge pipe, a key component connecting the die to the extruder body, has a direct impact on product quality and production efficiency. Existing extruder discharge pipes typically consist of a feed port, a compression section, and an extrusion section. The feed port receives the molten fluid medium and extrude it through the compression section and the extrusion section.

[0004] However, although the discharge pipe design of the existing extruder meets the production needs to a certain extent, it still has the following major defects: the discharge component of the existing extruder has poor stability in the extrusion flow of the fluid medium, which makes it easy for the fluid medium to form material blockage in the discharge component, resulting in poor discharge effect of the extruder, which is not conducive to the stable use of the discharge component; and the discharge pipe used in the existing extruder is generally a straight-through discharge pipe, and the transmission efficiency of the extruded fluid medium along the discharge pipe is poor. Different material properties and production needs have different requirements for the discharge pipe. The existing discharge pipe has limitations in adapting to different working conditions and is difficult to meet diverse production needs. Utility Model Content

[0005] The purpose of the present utility model is to solve the above defects and provide a discharge component for an extruder to solve the technical problems in the above background technology that the discharge component is prone to material blockage when extruding the fluid medium, and the transmission efficiency of the fluid medium along the discharge pipe is poor, thereby affecting the discharge efficiency and stable use of the discharge component.

[0006] The purpose of this utility model is achieved by the following methods:

[0007] The discharging opening that stirs cage connects with the delivery chute charging aperture, and the delivery chute discharging opening that stirs cage connects with the delivery chute charging aperture, and the delivery chute discharging opening that stirs cage connects with the delivery chute charging aperture.

[0008] Further in the above description, the feed end extends toward the discharge end in a trumpet shape, and the feed end and the discharge end at both ends of the discharge pipe are made by integral molding.

[0009] Further in the above description, a connecting flange is provided at the end of the feed end away from the discharge end, the connecting flange is provided along the edge of the feed end, and a connecting hole for connection and installation is provided on the connecting flange.

[0010] Further in the above description, both ends of the pressurized delivery cylinder are provided with mounting flanges for matching with the connecting flanges, and the mounting flanges are provided with fixing holes matching with the connecting holes.

[0011] Further in the above description, the discharge port extends gradually from one end close to the feed port to the outside away from the feed port, and the feed port and the discharge port at both ends of the discharge pipe are larger than the inner diameter of the discharge pipe.

[0012] Further in the above description, a reinforcing plate is provided on the outer surface of the discharge pipe, the reinforcing plate is welded along the feed end and the discharge end of the discharge pipe, and a mounting hole is opened on the reinforcing plate.

[0013] Further in the above description, a cooling cover is connected to the reinforcing plate through the mounting hole, the cooling cover is wrapped around the outer side of the discharge pipe, and a cooling cavity is formed between the cooling cover and the discharge pipe, and a refrigerant inlet and a refrigerant outlet are provided on the cooling cover to communicate with the cooling cavity.

[0014] The beneficial effects of the present invention are as follows: the material is extended to the discharge port through the transmission path along the discharge channel through the feed port, and is designed to be a convergent shape that gradually decreases from large to small, so that the material can enter the discharge pipe conveniently, and at the same time, the material is initially accelerated and concentrated, and the diffusion of the material in the initial stage is reduced, so that the material can flow more smoothly along the discharge path, thereby improving the efficiency and stability of material transportation; a certain pressure is applied to the material through the gradually decreasing cross-section at the feed end, so that the material produces a stable flow in the discharge pipe, reducing the material blockage caused by uneven flow rate or eddy current phenomenon, and improving the stability of use; the discharge end expands and extends outward away from the end of the discharge pipe, so that the material smoothly transitions from the discharge port after passing through the discharge pipe, reducing the flow resistance caused by the cross-section, making the material more smoothly discharged, and improving the extrusion efficiency and the quality of the finished product; the pressurized conveying cylinder is connected to the discharge pipe to form a double-inlet and single-outlet structure, which further improves the production efficiency and output. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the embodiment from a top view;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the embodiment from an upward perspective;

[0017] Figure 3 Schematic diagram of the structure of the discharge pipe in this embodiment;

[0018] Figure 4 Schematic diagram of the internal structure of this embodiment;

[0019] Figure 5 is a cross-sectional view of this embodiment;

[0020] The reference numerals in the figure are: 100-discharge pipe, 101-feed end, 102-discharge end, 103-feed port, 104-discharge port, 105-discharge channel, 106-connecting flange, 107-connecting hole, 108-reinforcement plate, 109-mounting hole; 200-pressurized conveying cylinder, 201-conveyance channel, 202-mounting flange, 203-fixing hole; 300-cooling cover, 301-cooling cavity, 302-refrigerant inlet, 303-refrigerant outlet. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0022] In this embodiment, refer to Figure 1-Figure 5The specific implementation of the discharge assembly for the extruder includes a discharge pipe 100 and a pressurized conveying cylinder 200. The discharge pipe 100 is made of a hollow tube. The two ends of the discharge pipe 100 are respectively formed with a feed end 101 and a discharge end 102. The feed end 101 is provided with a feed port 103 connected to the discharge pipe 100. The discharge end 102 is provided with a discharge port 104 connected to the discharge pipe 100. The feed port 103 passes through the hollow discharge pipe 100 and is connected to the discharge port 104 to form a discharge channel 105. The feed port 103 is connected to the discharge port 104 along the transmission path of the discharge channel 105. The material port 104 extends so that the feed port 103 extends toward the discharge end 102 from one end away from the discharge end 102, so that the feed port 103 gradually decreases from a large size and is connected with the discharge pipe 100 to form a convergent extension shape, and the discharge end 102 extends outward from one end away from the discharge pipe 100. The pressurized conveying cylinder 200 is installed on the feed end 101 of the discharge pipe 100, and two conveying channels 201 for conveying materials are opened inside the pressurized conveying cylinder 200. The two conveying channels 201 of the pressurized conveying cylinder 200 are connected with the discharge channel 105 of the discharge pipe 100 to form a double-inlet and single-outlet.

[0023] The feed end 101 extends toward the discharge end 102 in a trumpet shape, and the feed end 101 and the discharge end 102 at both ends of the discharge pipe 100 are made by integral molding.

[0024] Specifically, the feed end 101 is connected to the pressurized conveying cylinder 200, and the trumpet-shaped setting of the feed end 101 facilitates the conveying and introduction of materials by the pressurized conveying cylinder 200 through the feed port 103. At the same time, the blockage phenomenon at the connection between the discharge pipe 100 and the pressurized conveying cylinder 200 can be reduced, thereby improving the stability of the conveying.

[0025] A connecting flange 106 is provided at the end of the feed end 101 away from the discharge end 102. This flange 106 is arranged along the edge of the feed end 101 and has connecting holes 107 for connection and installation. Both ends of the pressurized conveying cylinder 200 are provided with mounting flanges 202 for mating with the connecting flanges 106. The mounting flanges 202 are provided with fixing holes 203 that mate with the connecting holes 107.

[0026] Optionally, the mounting flange 202 is paired with the connecting flange 106, and the fixing hole 203 and the connecting hole 107 are connected by bolts, so that the pressurized conveying cylinder 200 is detachably connected to the discharge pipe 100, so that the pressurized conveying cylinder 200 adapted to the conveying channel 201 of the material can be replaced according to the needs of use to meet the requirements of different material properties and production processes.

[0027] Optionally, in some embodiments, by adjusting the conveying channel 201 (such as the number, size, shape, etc. of the channels) of the pressurized conveying cylinder 200 and the degree of convergence and expansion of the discharge pipe 100, the processing requirements of materials of different types and properties can be adapted to improve the versatility and adaptability of the discharge component.

[0028] The discharge port 104 gradually expands and extends from one end close to the feed port 103 outward away from the outside of the feed port 103 . The feed port 103 and the discharge port 104 at both ends of the discharge pipe 100 are larger than the inner diameter of the discharge pipe 100 .

[0029] Specifically, the discharge end 102 expands and extends outward away from one end of the discharge pipe 100, so that the inner diameter of the discharge end 102 is larger than the inner diameter of the discharge pipe 100, so that the material can transition smoothly when leaving the discharge pipe 100, reducing the flow resistance caused by the sudden change of cross-section, helping the material to be discharged more smoothly, and improving the extrusion efficiency and the quality of the finished product.

[0030] The outer surface of the discharge pipe 100 is provided with a reinforcement plate 108, which is welded along the feed end 101 and the discharge end 102 of the discharge pipe 100. The reinforcement plate 108 is provided with a mounting hole 109. A cooling cover 300 is connected to the reinforcement plate 108 through the mounting hole 109. The cooling cover 300 wraps around the outer surface of the discharge pipe 100, and a cooling cavity 301 is formed between the cooling cover 300 and the discharge pipe 100. The cooling cover 300 is provided with a refrigerant inlet 302 and a refrigerant outlet 303, which are connected to the cooling cavity 301.

[0031] Specifically, the reinforcement plate 108 prevents deformation of the discharge pipe 100 during material transport, thereby improving operational stability. The connection between the cooling hood 300 and the discharge pipe 100 forms a cooling cavity 301. When the heat-carrying material is discharged through the discharge pipe 100, the refrigerant inlet 302 and the refrigerant outlet 303 are connected to external cooling gas through pipes, which circulates and cools the discharge pipe 100, reducing high temperatures in the discharge pipe 100.

[0032] Specifically, the discharge assembly cleverly combines the discharge pipe 100 with the pressurized conveying cylinder 200 to form a unit with a compact structure and complete functions, which saves equipment space and improves the overall performance and efficiency of the equipment.

[0033] The difference between this embodiment and the prior art is that the discharge pipe 100 and the pressurized conveying cylinder 200 are matched through the connecting flange 106 and the mounting flange 202, and the discharge pipe 100 is connected to the pressurized conveying cylinder 200 by passing the bolts through the fixing hole 203 and the connecting hole 107. The feed port 103 of the discharge pipe 100 extends to the discharge port 104 along the transmission path of the discharge channel 105, and the feed port 103 is a trumpet-shaped convergent shape that gradually decreases from large to small, so that the material can be easily entered into the discharge pipe 100 from the pressurized conveying cylinder 200. At the same time, the trumpet-shaped feed port 103 is used to achieve preliminary acceleration and concentration of the material, thereby reducing the diffusion of the material in the initial stage and allowing the material to be more The material flows smoothly along the discharge channel 105, improving the efficiency and stability of material transportation. A certain pressure is applied to the material through the gradually decreasing cross-section of the feed end 101, so that the material produces a stable flow in the discharge pipe 100, reducing material blockage caused by uneven flow rate or eddy current phenomenon, and improving the stability of use. The discharge end 102 expands and extends outward away from the end of the discharge pipe 100, so that the material smoothly transitions from the discharge port 104 after passing through the discharge pipe 100, reducing the flow resistance caused by the cross-section, making the material more smoothly discharged, improving the extrusion efficiency and the quality of the finished product, and the pressurized conveying cylinder 200 is connected to the discharge pipe 100 to form a double-inlet and single-outlet structure, further improving production efficiency and output.

[0034] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. A discharge assembly for an extruder, comprising a discharge pipe and a pressurized conveying cylinder, wherein the discharge pipe is made of a hollow tube, and is characterized in that: The two ends of the discharge pipe are respectively formed with a feed end and a discharge end, a feed port connected to the discharge pipe is provided inside the feed end, and a discharge port connected to the discharge pipe is provided inside the discharge end, the feed port passes through the hollow discharge pipe and is connected with the discharge port to form a discharge channel, the feed port extends toward the discharge port along the transmission path of the discharge channel, so that the feed port extends toward the discharge end at one end away from the discharge end, so that the feed port gradually decreases from a large size and is connected with the discharge pipe to form a convergent extension shape, and the discharge end is expanded and extended to the outside at one end away from the discharge pipe, the pressurized conveying cylinder is installed at the feed end of the discharge pipe, and two conveying channels for conveying materials are provided inside the pressurized conveying cylinder, and the two conveying channels of the pressurized conveying cylinder are connected with the discharge channel of the discharge pipe to form a double-input and single-output.

2. The discharge assembly for an extruder according to claim 1, characterized in that: The feed end extends toward the discharge end in a trumpet shape, and the feed end and the discharge end at both ends of the discharge pipe are made by integral molding.

3. The discharge assembly for an extruder according to claim 1, characterized in that: The end of the feed end away from the discharge end is provided with a connecting flange, the connecting flange is arranged along the edge of the feed end, and a connecting hole for connecting and installing is opened on the connecting flange.

4. The discharge assembly for an extruder according to claim 3, characterized in that: Both ends of the pressurized delivery cylinder are provided with mounting flanges for matching the connecting flanges, and the mounting flanges are provided with fixing holes matching the connecting holes.

5. The discharge assembly for an extruder according to claim 1, characterized in that: The discharge port gradually expands and extends from one end close to the feed port to the outside away from the feed port, and the feed port and the discharge port at both ends of the discharge pipe are larger than the inner diameter of the discharge pipe.

6. A discharge assembly for an extruder according to any one of claims 1 to 5, characterized in that: The outer surface of the discharge pipe is provided with a reinforcement plate, which is welded along the feed end and the discharge end of the discharge pipe, and a mounting hole is opened on the reinforcement plate.

7. A discharge assembly for an extruder according to claim 6, characterized in that: A cooling cover is connected to the reinforcing plate through a mounting hole. The cooling cover is wrapped around the outer side of the discharge pipe, and a cooling cavity is formed between the cooling cover and the discharge pipe. A refrigerant inlet and a refrigerant outlet that are in communication with the cooling cavity are provided on the cooling cover.

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