Extrusion device for non-woven fabric production
By using alkylbenzene-type oil and a vortex convection heating component with impellers in the nonwoven fabric production device, the problem of high-temperature melting in nonwoven fabric production was solved, and uniform heating and full melting of raw materials in the screw extruder were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 新疆诺联新材料科技有限公司
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-12
AI Technical Summary
Existing nonwoven fabric production equipment cannot meet the high temperature requirements of 230-280 degrees Celsius and lacks a pressurization structure to increase the water temperature, resulting in the nonwoven fabric raw materials in the screw extruder not being effectively heated and melted.
The heating element is filled with alkylbenzene oil with a boiling point higher than the working temperature of the electric heating network, and the impeller is driven by a drive motor to form a vortex convection, ensuring that heat is evenly transferred to the surface of the screw extruder to achieve high-temperature melting.
The screw extruder operates at a stable temperature within the range of 230-280℃, ensuring that the nonwoven fabric raw material is fully melted, thereby improving product quality and production efficiency.
Smart Images
Figure CN224227296U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of extrusion devices for nonwoven fabric production, specifically an extrusion device for nonwoven fabric production. Background Technology
[0002] The extrusion apparatus for nonwoven fabric production disclosed in CN215619872U includes an extrusion cylinder; a heating mechanism is installed on the surface of the extrusion cylinder, and a conveying mechanism is installed on one side of the bottom of the extrusion cylinder; the heating mechanism includes a heating chamber and a heating wire, the heating chamber surrounds the surface of the extrusion cylinder, and the heating wire is installed inside the heating chamber.
[0003] By setting up a heating mechanism, the device has a heating chamber installed outside the heating wire during subsequent use. By injecting water into the heating chamber, the water is heated simultaneously with the heating wire heating the extrusion cylinder. Since the heating chamber surrounds the outside of the extrusion cylinder, the water can completely cover the outside of the extrusion cylinder, making the heating area of the extrusion cylinder more uniform. This allows the raw materials inside the extrusion cylinder to fuse more fully, thus resulting in a higher quality product extruded by this device.
[0004] Although the comparative document describes uniform heating of the screw extruder using water, the screw extrusion process for nonwoven fabric production requires a temperature of 230-280 degrees Celsius, which ordinary water cannot reach. Furthermore, it lacks a pressurization structure to increase the pressure of the water to achieve the required higher temperature. Therefore, this method cannot heat and melt the raw materials for nonwoven fabric production inside the screw extruder. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides an extrusion device for nonwoven fabric production. It solves the problem that the spiral extrusion process for nonwoven fabric production requires a temperature of 230-280 degrees Celsius, but ordinary water cannot reach this temperature, and there is a lack of a pressurization structure to increase the pressure of the water to achieve the requirement of heating to a higher temperature. This solution cannot heat and melt the raw materials for nonwoven fabric production inside the spiral extruder.
[0006] To achieve the above objectives, the present invention provides the following technical solution: an extrusion device for nonwoven fabric production, comprising a screw extruder, wherein a feed trough is provided on the top surface of the screw extruder, and a heating component is sleeved on its surface; a liquid inlet is provided on the top surface of the heating component and a liquid outlet is provided on the bottom surface; and a solenoid valve tube is fixedly connected to the surfaces of the liquid inlet and the liquid outlet.
[0007] The heating assembly includes a sealed cavity fitted onto the surface of a screw extruder. The sealed cavity is filled with alkylbenzene oil. An equipment plate is fixedly connected to the inner wall of the sealed cavity. Several through holes are equally spaced from left to right on the side of the equipment plate. A bracket is fixedly connected to the surface of each through hole. A drive motor is fixedly connected to the side of the bracket. A paddle located inside the through hole is fixedly connected to the output end of the drive motor. An electric heating mesh is fitted inside the sealed cavity.
[0008] In a specific embodiment, the plurality of through holes are equidistantly distributed along the side of the equipment plate, and the rotation axis of the blade inside each through hole is perpendicular to the axial center line of the screw extruder.
[0009] In one specific embodiment, the electric heating mesh is a ring-shaped mesh structure, which is sleeved on the inner wall of the sealed cavity and heats the alkylbenzene type oil through the inner wall of the sealed cavity.
[0010] In one specific embodiment, the inlet and outlet are connected to an external circulation pipeline via a solenoid valve to form a closed channel for replacing alkylbenzene oil.
[0011] In a specific embodiment, the alkylbenzene oil has a boiling point higher than the operating temperature of the electric heating network and possesses physical properties that meet the requirements for heat conduction, ensuring that it remains in a liquid thermally conductive state throughout the heating process.
[0012] In one specific embodiment, when the drive motor drives the blade to rotate, it forcibly agitates the alkylbenzene oil in the sealed cavity, so that the heat generated by the electric heating network can achieve uniform temperature distribution through oil convection.
[0013] Compared with the prior art, the present invention provides an extrusion device for nonwoven fabric production, which has the following advantages:
[0014] In the technical solution disclosed in this utility model, the sealing cavity of the heating component sleeved on the surface of the screw extruder is filled with alkylbenzene oil with a boiling point higher than the working temperature of the electric heating network, which directly breaks through the physical limitation of the upper limit of water heating temperature, so that the working temperature of the screw extruder is stably kept in the high temperature range of 230-280℃ required for nonwoven fabric production.
[0015] With the heating component provided by this invention, after the molten nonwoven fabric raw material is fed into the feed chute at the top of the screw extruder, the heating component fitted onto its surface immediately starts working. The electric heating mesh fitted into the cavity inside the sealed chamber heats the alkylbenzene oil to a high temperature range of 230-280℃. At the same time, several drive motors evenly distributed on the side of the equipment plate drive the blades located inside the through holes to rotate in a direction with their axes perpendicular to the axial center line of the screw extruder, forcibly stirring the alkylbenzene oil in the sealed chamber to form vortex convection. This allows the heat generated by the annular mesh structure electric heating mesh to be evenly transferred to the surface of the screw extruder through oil circulation. During this process, the boiling point of the alkylbenzene oil is always higher than the working temperature of the electric heating mesh to ensure stable liquid heat conduction and maintain the heat transfer efficiency under high temperature conditions, ultimately allowing the raw material inside the screw extruder to be fully melted and extruded. Attached Figure Description
[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the heating component structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the electromagnetic valve tube structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.
[0021] In the diagram: 1. Screw extruder; 2. Feed trough; 3. Heating assembly; 31. Sealing chamber; 32. Alkylbenzene type oil; 33. Equipment plate; 34. Support frame; 35. Drive motor; 36. Paddle; 37. Electric heating network; 4. Solenoid valve tube. Detailed Implementation
[0022] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.
[0023] Figures 1-4 As one embodiment of this utility model, an extrusion device for nonwoven fabric production includes a screw extruder 1, a feed trough 2 is opened on the top surface of the screw extruder 1, a heating component 3 is sleeved on its surface, a liquid inlet is opened on the top surface of the heating component 3 and a liquid outlet is opened on the bottom surface, and a solenoid valve tube 4 is fixedly connected to the surfaces of the liquid inlet and the liquid outlet.
[0024] The specific problem addressed in this embodiment is that the spiral extrusion process for nonwoven fabric production requires a temperature of 230-280 degrees Celsius, which ordinary water cannot reach, and there is a lack of pressurization structures to increase the pressure of the water to achieve the required higher temperature. This solution fails to heat and melt the raw materials for nonwoven fabric production within the spiral extruder. This invention utilizes an alkylbenzene oil 32 with a boiling point higher than the operating temperature of the electric heating grid 37, filling the sealed cavity 31 of the heating component 3 fitted onto the surface of the spiral extruder 1. This directly overcomes the physical limitation of the upper limit of water heating temperature, ensuring that the operating temperature of the spiral extruder 1 remains stable within the high-temperature range of 230-280 degrees Celsius required for nonwoven fabric production.
[0025] The heating assembly 3 includes a sealed cavity 31 fitted onto the surface of the screw extruder 1. The sealed cavity 31 is filled with alkylbenzene oil 32. An equipment plate 33 is fixedly connected to the inner wall of the sealed cavity 31. Several through holes are equidistantly opened from left to right on the side of the equipment plate 33. A bracket 34 is fixedly connected to the surface of each through hole. A drive motor 35 is fixedly connected to the side of the bracket 34. The output end of the drive motor 35 is fixedly connected to a blade 36 located inside the through hole. A cavity is opened inside the sealed cavity 31 and an electric heating mesh 37 is fitted inside the cavity. In this specific embodiment, the several through holes are equidistantly distributed along the side of the equipment plate 33, and the rotation axis of the blade 36 set inside each through hole is perpendicular to the axial center line of the screw extruder 1. After the molten nonwoven fabric raw material is fed into the feed trough 2 at the top of the screw extruder 1, the heating component 3 fitted onto its surface immediately starts working. The electric heating mesh 37 fitted into the cavity of the sealed chamber 31 heats the alkylbenzene oil 32 to a high temperature range of 230-280℃. At the same time, several drive motors 35 equidistantly distributed on the side of the equipment plate 33 drive the blades 36 located inside the through holes to rotate in a direction with their axes perpendicular to the axial center line of the screw extruder 1. This forcibly agitates the alkylbenzene oil 32 in the sealed chamber 31 to form vortex convection, so that the heat generated by the annular mesh structure electric heating mesh 37 is evenly transferred to the surface of the screw extruder 1 through the oil circulation. During this process, the boiling point of the alkylbenzene oil 32 is always higher than the working temperature of the electric heating mesh 37 to ensure stable heat conduction in the liquid state and maintain the heat transfer efficiency under high temperature conditions. Finally, the raw material inside the screw extruder 1 is fully melted and extruded.
[0026] In this specific embodiment, the boiling point of the alkylbenzene oil 32 is higher than the working temperature of the electric heating network 37 and has physical properties that meet the requirements of heat conduction, ensuring that it always maintains a liquid thermal conductivity state during the heating process. The alkylbenzene oil 32 is filled inside the sealed cavity 31, and its boiling point parameter is always set higher than the upper limit of the working temperature of the electric heating network 37. When the electric heating network 37 is heated in the cavity to the high temperature of 230-280°C required for the nonwoven fabric to melt, the alkylbenzene oil 32 continuously maintains a stable liquid thermal conductivity state based on its physical properties that meet the requirements of heat conduction, directly replacing water to overcome the technical bottleneck of temperature limitation. At the same time, the oil evenly coats the surface of the screw extruder 1 through thermal circulation, eliminating the risk of heat transfer failure caused by boiling and vaporization of traditional water, and ensuring that the raw material inside the screw extruder 1 is continuously in a high-temperature melting environment.
[0027] In this specific embodiment, when the drive motor 35 drives the blade 36 to rotate, it forcibly agitates the alkylbenzene oil 32 in the sealed cavity 31, so that the heat generated by the electric heating network 37 can be evenly distributed through oil convection. When the drive motor 35 starts, it drives the blade 36 fixed at the output end to rotate at high speed inside the through hole of the equipment plate 33, forcibly agitating the alkylbenzene oil 32 in the sealed cavity 31 to form vortex convection, so that the concentrated heat generated by the electric heating network 37 can be evenly transferred to the entire surface of the screw extruder 1 through dynamic oil circulation. This active forced convection mechanism completely eliminates the oil heat accumulation effect caused by the local high temperature of the electric heating network 37. Combined with the design that the rotation axis of the blade 36 is perpendicular to the axial direction of the screw extruder 1, it enhances the radial flow of the oil and achieves precise temperature control of the temperature difference throughout the sealed cavity 31, thus solving the problem of uneven temperature in traditional static heating schemes from the root.
[0028] Working principle: After the molten nonwoven fabric raw material is fed into the feed trough 2 at the top of the screw extruder 1, the electric heating mesh 37 in the sealed cavity 31 fitted onto its surface starts the heating program. The electric heating mesh 37 heats up in the cavity, so that the alkylbenzene oil 32 in contact reaches the nonwoven fabric melting temperature of 230-280℃. At this time, several drive motors 35 evenly distributed on the side of the equipment plate 33 start synchronously, driving the blades 36 fixedly connected to the output end to rotate at high speed in the through hole in a direction with the rotation axis perpendicular to the axial center line of the screw extruder 1, forcibly agitating the sealed cavity 31. The alkylbenzene oil 32 inside forms a radial vortex; this vortex causes the heat generated by the heating grid 37 to be evenly transferred to the entire surface of the screw extruder 1 through oil convection. At the same time, the characteristic that the boiling point of the alkylbenzene oil 32 is higher than the working temperature of the heating grid 37 keeps the oil in a liquid state with high-efficiency heat conduction. When the oil usage cycle reaches the threshold, the solenoid valve pipe 4 of the liquid inlet on the top surface and the liquid outlet on the bottom surface of the heating component 3 opens to form a closed circulation channel, realizing the closed-loop maintenance of old oil discharge and new oil injection, and continuously ensuring the heat conduction efficiency required for the high-temperature melting process.
[0029] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.
[0030] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An extrusion apparatus for nonwoven fabric production, comprising a screw extruder (1), characterized in that: The screw extruder (1) has a feed trough (2) on its top surface, and a heating component (3) is sleeved on its surface. The heating component (3) has a liquid inlet on its top surface and a liquid outlet on its bottom surface. The surfaces of the liquid inlet and the liquid outlet are fixedly connected to a solenoid valve tube (4). The heating assembly (3) includes a sealed cavity (31) fitted onto the surface of the screw extruder (1). The sealed cavity (31) is filled with alkylbenzene oil (32). The inner wall of the sealed cavity (31) is fixedly connected to a device plate (33). The side of the device plate (33) is provided with several through holes at equal intervals from left to right. A bracket (34) is fixedly connected to the surface of each through hole. A drive motor (35) is fixedly connected to the side of the bracket (34). The output end of the drive motor (35) is fixedly connected to a blade (36) located inside the through hole. A cavity is provided inside the sealed cavity (31) and an electric heating mesh (37) is fitted inside the cavity.
2. The extrusion apparatus for nonwoven fabric production according to claim 1, characterized in that: The plurality of through holes are equidistantly distributed along the side of the equipment plate (33), and the rotation axis of the blade (36) inside each through hole is perpendicular to the axial center line of the screw extruder (1).
3. The extrusion apparatus for nonwoven fabric production according to claim 1, characterized in that: The electric heating mesh (37) is a ring-shaped mesh structure, which is fitted onto the inner wall of the sealed cavity (31) and heats the alkylbenzene oil (32) through the inner wall of the sealed cavity (31).
4. The extrusion apparatus for nonwoven fabric production according to claim 1, characterized in that: The inlet and outlet are connected to the external circulation pipeline through the solenoid valve pipe (4) to form a closed channel for replaceable alkylbenzene oil (32).
5. The extrusion apparatus for nonwoven fabric production according to claim 1, characterized in that: The alkylbenzene type oil (32) has a boiling point higher than the working temperature of the electric heating grid (37) and has physical properties that meet the requirements of heat conduction, ensuring that it always maintains a liquid thermal conductivity state during the heating process.
6. The extrusion apparatus for nonwoven fabric production according to claim 1, characterized in that: When the drive motor (35) drives the blade (36) to rotate, it forcibly stirs the alkylbenzene oil (32) in the sealed cavity (31), so that the heat generated by the electric heating network (37) can achieve uniform temperature distribution through oil convection.