A film extruder feed drying preheating device

Abstract

This utility model discloses a preheating and drying device for a film extruder feed, relating to the field of film production technology. A heating box is installed on the outside of the feed cylinder, and second heating tubes are symmetrically arranged inside the heating box. An exhaust fan is installed inside the heating box on one side of each of the second heating tubes. A heating mechanism is installed outside the feed cylinder, including a heating sleeve fitted over the feed cylinder. First heating tubes are symmetrically arranged inside the heating sleeve, and a heat-insulating sleeve is installed outside the heating sleeve. Thermally conductive adhesive is coated on the inner side of the heating sleeve, and heat-conducting rods are symmetrically arranged inside the feed cylinder on the inner side of the heating sleeve. When the exhaust fan is working, outside air is drawn into the heating box and heated by the second heating tubes. The heated air comes into contact with the feed film raw material particles, thus preheating and drying the raw material to facilitate subsequent film extrusion.

Description

Technical Field

[0001] This utility model relates to the field of film production technology, and in particular to a feeding, drying and preheating device for a film extruder. Background Technology

[0002] A film extruder is a piece of equipment used to produce plastic films. It is widely used in the plastics processing industry. This machine heats and melts plastic granules or powders and extrudes them into films through the die of the extruder, thereby achieving the production of films of various thicknesses and properties. During the film extrusion process, many plastic raw materials usually need to be dried before production to remove moisture and avoid bubbles, uneven melting or other defects caused by moisture evaporation during the extrusion process.

[0003] Chinese patent discloses a preheating uniform rubber extruder (authorization announcement number CN210436586U). This patented technology includes a preheating drying plate installed inside the feed hopper, and drying air vents on the feed blades working in conjunction with drying air vents on the upper side of the feed hopper. This achieves further drying and preheating of the material before it enters the extruder, thereby ensuring the quality of the final product and solving the problem of affecting the performance of the final product due to insufficient drying and preheating of the material before it enters the extruder. The hot drying plates are equipped with stirring blades and scrapers on the stirring blades, which enable the material to be quickly scraped off and fed into the extruder after it has been preheated and made viscous, thus solving the problem of clogging the feed inlet caused by the preheating device.

[0004] However, most existing rubber extruders preheat the raw materials by contacting them with preheating drying sheets. Since this is the only method used for preheating, the preheating and drying effect is poor, affecting the subsequent operation of the film extruder. For example, the aforementioned prior art uses only a single preheating drying sheet method. Therefore, those skilled in the art provide a film extruder feed drying and preheating device to solve the problems mentioned in the background art. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a feeding drying and preheating device for a film extruder, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a film extruder feeding drying and preheating device, including a feeding cylinder and a feeding pipe disposed on the upper surface of the feeding cylinder, a stirring motor is installed at the middle position of the upper surface of the feeding cylinder, the driving end of the stirring motor is connected to a rotating shaft, stirring rods are symmetrically arranged outside the rotating shaft, a heating box is installed on the outside of the feeding cylinder, a second heating pipe is symmetrically arranged inside the heating box, and an exhaust fan is installed inside the heating box on one side of the second heating pipe, and an exhaust pipe is connected to one side of the heating box inside the feeding cylinder; A heating mechanism is installed on the outside of the feed cylinder. The heating mechanism includes a heating sleeve fitted around the outside of the feed cylinder. A first heating tube is symmetrically arranged inside the heating sleeve, and a heat insulation sleeve is provided on the outside of the heating sleeve. The inner side of the heating sleeve is coated with thermally conductive adhesive, and heat-conducting rods are symmetrically arranged inside the feed cylinder on the inner side of the heating sleeve.

[0007] As a further technical solution of this utility model, an air inlet is provided on the outside of the heating box, and an exhaust port is provided on the outside of the feeding cylinder.

[0008] As a further technical solution of this utility model, a feeding plate is inclinedly arranged inside the feeding cylinder, and there is a distance between one side of the feeding plate and the inner side of the feeding cylinder.

[0009] As a further technical solution of this utility model, at least four sets of stirring rods are symmetrically arranged on the outside of the rotating shaft, and the stirring rods and the heat-conducting rods are arranged alternately.

[0010] As a further technical solution of this utility model, the first heating tube is arranged in a ring with the heating sleeve as the center, and the first heating tube is an electric heating tube.

[0011] As a further technical solution of this utility model, six second heating tubes are also symmetrically arranged inside the heating box, and the second heating tubes are also electric heating tubes.

[0012] This utility model provides a feeding drying and preheating device for a film extruder, which has the following advantages compared with the prior art: 1. This design provides a preheating and drying device for a film extruder feeder. The feeding plate allows for the inclined feeding of film raw material particles from the feed pipe. During feeding, an external air is drawn into the heating chamber by a blower and heated by a second heating tube. The heated air comes into contact with the feeding film raw material particles, thus preheating and drying the raw material for subsequent film extrusion.

[0013] 2. This design provides a preheating and drying device for a film extruder feeder. The device heats the material by energizing the first heating tube inside the heating jacket of the heating mechanism. After heating, the heat is transferred to the inside of the feed cylinder using thermally conductive adhesive. Simultaneously, the heat is transferred to the inside of the feed cylinder and into contact with the raw material via a heat-conducting rod. Thus, when the stirring motor is working, the stirring rod outside the rotating shaft can stir the raw material, improving the heating and drying effect of the raw material. This design is highly practical. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a feeding, drying, and preheating device for a film extruder. Figure 2 This is a schematic diagram of the internal structure of the feed cylinder in a feeding, drying and preheating device for a film extruder. Figure 3 This is a schematic diagram of the heating mechanism in a feeding drying and preheating device for a film extruder.

[0015] In the diagram: 1. Feed cylinder; 11. Feed pipe; 12. Exhaust port; 2. Stirring motor; 21. Rotating shaft; 22. Stirring rod; 3. Heating mechanism; 31. Heat insulation sleeve; 32. Thermal conductive adhesive; 33. Heating sleeve; 34. First heating tube; 35. Heat-conducting rod; 4. Heating box; 41. Second heating tube; 42. Air inlet; 43. Exhaust fan; 44. Exhaust pipe; 5. Feed plate. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0017] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0018] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Please see Figure 1-3 This utility model provides a technical solution for a preheating and drying device for feeding a film extruder: it includes a feeding cylinder 1 and a feeding pipe 11 disposed on the upper surface of the feeding cylinder 1. A stirring motor 2 is installed at the middle position of the upper surface of the feeding cylinder 1. The driving end of the stirring motor 2 is connected to a rotating shaft 21. A stirring rod 22 is symmetrically arranged outside the rotating shaft 21. A heating box 4 is installed on the outside of the feeding cylinder 1. A second heating pipe 41 is symmetrically arranged inside the heating box 4. An exhaust fan 43 is installed inside the heating box 4 on one side of the second heating pipe 41. An exhaust pipe 44 is connected to one side of the heating box 4 inside the feeding cylinder 1. This device utilizes the exhaust fan 43 inside the heating box 4 to draw in external air into the heating box 4 so that it can contact and heat the second heating pipe 41. After heating, the air is discharged outward through the exhaust pipe 44 to achieve the purpose of preheating and drying the raw material. A heating mechanism 3 is installed on the outside of the feed cylinder 1. The heating mechanism 3 includes a heating sleeve 33 that is sleeved on the outside of the feed cylinder 1. A first heating tube 34 is symmetrically arranged inside the heating sleeve 33. A heat insulation sleeve 31 is arranged on the outside of the heating sleeve 33. The inner side of the heating sleeve 33 is coated with thermally conductive adhesive 32. A heat-conducting rod 35 is symmetrically arranged inside the feed cylinder 1 on the inner side of the heating sleeve 33. This arrangement utilizes the first heating tube 34 inside the heating sleeve 33 to be electrically heated. The heat can then be transferred to the raw material inside the feed cylinder 1 through the thermally conductive adhesive 32 and the heat-conducting rod 35 to achieve the purpose of heating and preheating the raw material.

[0022] like Figure 2 As shown, an air inlet 42 is provided on the outside of the heating box 4, and an exhaust port 12 is provided on the outside of the feeding cylinder 1. This arrangement allows external air to be drawn into the heating box 4 for heating through the air inlet 42, and the hot and humid air inside the feeding cylinder 1 to be discharged to the outside through the exhaust port 12.

[0023] like Figure 2As shown, a feeding plate 5 is inclinedly arranged inside the feeding cylinder 1. There is a distance between one side of the feeding plate 5 and the inner side of the feeding cylinder 1. This arrangement allows the raw material to be fed into the feeding cylinder 1 by means of the inclined feeding plate 5. During the inclined feeding, hot air will preheat and dry the raw material.

[0024] like Figure 2 As shown, at least four sets of stirring rods 22 are symmetrically arranged on the outside of the rotating shaft 21, and the stirring rods 22 and the heat-conducting rods 35 are staggered. This staggered arrangement of the stirring rods 22 and the heat-conducting rods 35 can agitate the raw materials inside the feed cylinder 1 when the stirring rods 22 rotate, and can preheat and dry the raw materials inside the feed cylinder 1 through the heat-conducting rods 35.

[0025] like Figure 3 As shown, twelve first heating tubes 34 are arranged in a ring around the heating sleeve 33 inside the heating sleeve 33. The first heating tubes 34 are electric heating tubes. This arrangement uses the first heating tubes 34 to generate heat. The heat generated is transferred to the inside of the feed cylinder 1 through the thermally conductive adhesive 32, so as to achieve the purpose of preheating the raw materials inside the feed cylinder 1.

[0026] like Figure 2 As shown, six second heating tubes 41 are symmetrically arranged inside the heating box 4. The second heating tubes 41 are also electric heating tubes. This arrangement uses the power supply of the second heating tubes 41 to heat the incoming air, so as to preheat and dry the raw materials entering the feed cylinder 1.

[0027] The working principle of this utility model is as follows: When using the film extruder feeding drying preheating device of this utility model, firstly, the electrical equipment used in this utility model is powered by an external power source. The exhaust fan 43 inside the heating chamber 4 is started, and when it is working, external air can enter the heating chamber 4 through the air inlet 42. After entering, the air is heated by the second heating tube 41 which is electrically heated. After heating, the hot air enters the feeding cylinder 1 through the exhaust pipe 44. At the same time, the first heating tube 34 inside the heating sleeve 33 is turned on and heated. After heating, the heat is transferred to the feeding cylinder 1 by the thermally conductive adhesive 32. At the same time, the heat is transferred to the feeding cylinder 1 through the heat-conducting rod 35. After the feeding cylinder 1 is heated, the raw material used by the film extruder enters the feeding cylinder 1 through the feeding pipe 11 and is fed through the feeding plate 5. During feeding, the raw material is preheated by the hot air blowing. At the same time, the stirring rod 22 outside the rotating shaft 21 of the stirring motor 2 can stir the raw material, improve the heating and drying effect of the raw material, and has good practicality.

[0028] All electrical devices used in this invention are existing and known, and are connected to an external main controller and power supply. The main controller can be a conventional and known device such as a computer, and can be purchased and used directly on the market. Its structure, circuit and control principle are all existing and known technologies. Therefore, the structure, circuit and control principle of the device are not described in detail here.

[0029] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.

Claims

1. A film extruder feed drying preheating apparatus characterized by, The device includes a feed cylinder (1) and a feed pipe (11) disposed on the upper surface of the feed cylinder (1). A stirring motor (2) is installed at the middle position of the upper surface of the feed cylinder (1). A rotating shaft (21) is connected to the drive end of the stirring motor (2). A stirring rod (22) is symmetrically arranged on the outside of the rotating shaft (21). A heating box (4) is installed on the outside of the feed cylinder (1). A second heating pipe (41) is symmetrically arranged inside the heating box (4). A blower (43) is installed on one side of the second heating pipe (41) inside the heating box (4). An exhaust pipe (44) is connected to one side of the heating box (4) inside the feed cylinder (1). A heating mechanism (3) is installed on the outside of the feed cylinder (1). The heating mechanism (3) includes a heating sleeve (33) sleeved on the outside of the feed cylinder (1). A first heating tube (34) is symmetrically arranged inside the heating sleeve (33). A heat insulation sleeve (31) is arranged on the outside of the heating sleeve (33). Thermal conductive adhesive (32) is coated on the inside of the heating sleeve (33). A heat-conducting rod (35) is symmetrically arranged on the inside of the heating sleeve (33) inside the feed cylinder (1).

2. A film extruder feed drying and preheating apparatus according to claim 1, wherein An air inlet (42) is provided on the outside of the heating box (4), and an exhaust port (12) is provided on the outside of the feed cylinder (1).

3. A film extruder feed drying and preheating apparatus as defined in claim 1, wherein The feed cylinder (1) is inclined inside and a feed plate (5) is provided. There is a distance between one side of the feed plate (5) and the inside of the feed cylinder (1).

4. A film extruder feed drying and preheating apparatus as defined in claim 1, wherein At least four sets of stirring rods (22) are symmetrically arranged on the outside of the rotating shaft (21), and the stirring rods (22) and the heat-conducting rods (35) are staggered.

5. A film extruder feed drying and preheating apparatus as defined in claim 1, wherein The first heating tube (34) is arranged in a ring inside the heating sleeve (33) with the heating sleeve (33) as the center, and the first heating tube (34) is an electric heating tube.

6. A film extruder feed drying and preheating apparatus as defined in claim 1, wherein There are also six second heating tubes (41) symmetrically arranged inside the heating box (4), and the second heating tubes (41) are also electric heating tubes.

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