Preheating device on screw feeder
By designing a combined structure of conveying pipe and insulation cylinder on the screw feeder, the problems of heat loss and uneven heating of the screw feeder preheating device are solved, thus achieving uniform preheating and quality assurance of the raw materials.
Patent Information
- Application Number
- CN202423186180.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing screw feeder preheating devices suffer from heat loss and uneven heating of raw materials, which affects material quality.
A preheating device comprising a conveying pipe, an insulation cylinder, a heating plate, and a gear transmission system was designed. The combination of auger conveying and rotating heating plate in the insulation cylinder enables uniform preheating of raw materials.
This achieves uniform preheating of raw materials, reduces heat loss, and improves the consistency of material quality.
Smart Images
Figure CN223575716U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of feeder, especially relates to a preheating device on spiral feeder. BACKGROUND
[0002] Spiral feeder is the new generation product of powder material steady flow conveying, weighing and quantitative control, is suitable for the continuous measurement and batching of powder material in various industrial production environments, adopts a plurality of advanced technologies, reliable operation, high control precision, especially suitable for the continuous measurement and batching of powder material in building material, metallurgy, electric power, chemical industry and other industries, but the conditions required for different application occasions are different, and some application occasions need to heat the conveyed material.
[0003] The preheating device on the existing spiral feeder mostly has the function of heating the material, but the feed inlet of the existing spiral feeder is mostly directly exposed to the outside, which can easily cause heat loss when the preheating device heats the raw material in the spiral feeder, and although the existing preheating device can play a certain preheating role, it is difficult to ensure that the raw material is evenly heated during preheating, and unevenly heated raw material may affect the final quality when put into use, therefore, we provide a preheating device on a spiral feeder. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a preheating device on a spiral feeder to solve the problems in the above background technology.
[0005] Therefore, the utility model provides a preheating device on a spiral feeder, which comprises:
[0006] The bottom surface of the base is fixedly installed with a spiral feeder, the top surface of the spiral feeder is provided with a first feed inlet, the top surface of the spiral feeder is fixedly installed with a first fixed box, the outer side wall of the first feed inlet is fixedly connected with the inner side wall of the first fixed box, one side of the first fixed box is fixedly installed with a second fixed box, and the second fixed box, the first fixed box and the first feed inlet are communicated;
[0007] The conveying pipe is fixedly installed on the inner side wall of the second fixed box, the inner side wall of the conveying pipe is rotatably installed with an auger, and the inside of the conveying pipe is fixedly installed with heating plates on both sides;
[0008] The heat preservation cylinder is arranged on the outer side wall of the spiral feeder, heating strips are fixedly installed on both sides of the inside of the heat preservation cylinder, and the two heating strips are respectively located on both sides of the spiral feeder.
[0009] A gear ring is fixedly installed on the outer side wall of the heat preservation cylinder, one side of the second fixed box is rotatably installed with a first rotating shaft, one end of the first rotating shaft extends into the conveying pipe through one side of the second fixed box, one end of the first rotating shaft is fixedly connected with one end of the auger, one side of the second fixed box is rotatably installed with a second rotating shaft, the outer side wall of the second rotating shaft is fixedly installed with a second gear, the outer side wall of the first rotating shaft is fixedly installed with a first gear, the first gear is engaged with the second gear, and the gear ring is engaged with the second gear.
[0010] Two third rotating shafts are rotatably installed on the inner top surface of the first fixed box, and the outer side walls of the two third rotating shafts are fixedly installed with first baffles.
[0011] An adjusting mechanism is arranged on the top surface of the first fixed box and is used for adjusting the two first baffles.
[0012] In the above technical scheme, further, the adjusting mechanism comprises two third fixed plates, the two third fixed plates are fixedly installed on the two sides of the first fixed box, the same fourth rotating shaft is rotatably installed between the two third fixed plates, the top ends of the two third rotating shafts extend to the outside of the first fixed box through the inner top surface of the first fixed box, the top ends of the two third rotating shafts are fixedly installed with first bevel gears, the outer side wall of the fourth rotating shaft is fixedly installed with two second bevel gears, the two second bevel gears are opposite to each other, the two second bevel gears are engaged with the two first bevel gears respectively, one side of one of the third fixed plates is fixedly installed with a first motor, and one end of the output shaft of the first motor is fixedly connected with one end of the fourth rotating shaft.
[0013] In the above technical scheme, further, a second open slot is arranged on the top surface of the conveying pipe, a second feeding port is arranged on the top surface of the second fixed box, the second feeding port is in communication with the second open slot, a first open slot is arranged on one side of the second feeding port, a second baffle is slidably installed on the inner side wall of the second feeding port, the second baffle is slidably connected with the first open slot, and an electric push rod is fixedly installed on the top surface of the second fixed box, one end of the electric push rod is fixedly connected with one side of the second baffle.
[0014] In the above technical scheme, further, a second motor is fixedly installed on one side of the second fixed box, a belt pulley is fixedly installed on one end of the output shaft of the second motor and one end of the first rotating shaft, and the same belt is arranged on the two belt pulleys.
[0015] Further, the outer side wall of the screw feeder is fixedly provided with a first fixed plate and a second fixed plate, the bottom surface of the first fixed plate and the second fixed plate is fixedly connected with the top surface of the base, and the two ends of the heat preservation cylinder are rotationally connected with the opposite sides of the first fixed plate and the second fixed plate.
[0016] Further, one end of the screw feeder is fixedly provided with a discharge port, and the discharge port is provided with a valve.
[0017] Further, the bottom surface of the base is fixedly provided with two supporting plates.
[0018] The screw feeder has the advantages that:
[0019] 1. The preheating device on the screw feeder, before adding raw materials to the screw feeder, starts the two heating plates in the second fixed box, adds raw materials into the conveying pipe through the second feeding port, starts the second motor to drive the first rotating shaft to rotate under the cooperation of the two belt pulleys and the belt, the first gear rotates when the first rotating shaft rotates, the auger rotates when the first gear rotates, and the raw materials can be conveyed when the auger rotates, and the raw materials are preheated for the first time when the raw materials are conveyed under the action of the two heating plates, at this time, the fourth rotating shaft is driven to rotate by starting the first motor, and the two second bevel gears rotate when the fourth rotating shaft rotates, since the directions of the two second bevel gears are opposite, the two first bevel gears rotate in opposite directions when the two second bevel gears rotate, the two third rotating shafts rotate in opposite directions when the two first bevel gears rotate in opposite directions, and the two first baffles rotate in opposite directions when the two third rotating shafts rotate in opposite directions, the second baffle is driven to slide by starting the electric push rod when the two first baffles rotate and are leveled, and the second baffle is isolated from the outside of the second fixed box when one side of the second baffle abuts against the inner side wall of the second feeding port, so that the device has the practical advantage.
[0020] 2. The preheating device on the screw feeder, when the raw materials in the conveying pipe are preheated for the first time, the above operation is repeated to rotate the two first baffles to block the conveying pipe, and the screw feeder is started to convey the raw materials when the raw materials in the conveying pipe fall into the screw feeder, in order to ensure uniform preheating of the raw materials, the second gear is driven to rotate when the first gear rotates, the gear ring is driven to rotate when the second gear rotates, the heat preservation cylinder is driven to rotate when the gear ring rotates, and the two heating strips in the heat preservation cylinder are driven to rotate when the heat preservation cylinder rotates, at this time, the two heating strips are started, the raw materials in the screw feeder are heated comprehensively when the two heating strips rotate, and the above operation is repeated to rotate the two first baffles to block the conveying pipe, so that the raw materials in the screw feeder are uniformly heated and heat loss is prevented during preheating, the quality of the preheated raw materials is ensured, the raw materials are fully preheated, the valve is started to discharge the raw materials through the discharge port, and the device has the advantages of convenience and efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is the whole structure schematic view of the utility model;
[0022] Figure 2 It is the side structure schematic view of the utility model;
[0023] Figure 3 It is the utility model Figure 2 It is the enlarged structure schematic view of A place in the utility model;
[0024] Figure 4 It is the inside structure schematic view of the second fixed box of the utility model;
[0025] Figure 5 It is the utility model Figure 4 It is the enlarged structure schematic view of B place in the utility model;
[0026] Figure 6 It is the inside structure schematic view of the first fixed box of the utility model;
[0027] Figure 7 It is the heat preservation cylinder structure schematic view of the utility model.
[0028] Marked in the figure is:
[0029] 1, base;2, screw feeder;3, first feed inlet;4, first fixed box;5, second fixed box;6, conveying pipe;7, auger;8, first fixed plate;9, second fixed plate;10, heat preservation cylinder;11, heating strip;12, heating plate;13, first rotating shaft;14, first gear;15, gear ring;16, second rotating shaft;17, second gear;18, second feed inlet;19, first baffle;20, third rotating shaft;21, third fixed plate;22, fourth rotating shaft;23, first bevel gear;24, second bevel gear;25, first motor;26, first open slot;27, second baffle;28, electric push rod;29, second open slot;30, second motor;31, pulley;32, belt;33, valve;34, discharge port;35, support plate. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.
[0031] In the description of the present application, it should be noted that the terms used herein are merely for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. For the purpose of description, the sizes of the various parts shown in the drawings are not drawn in proportion to the actual proportions. The techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary, and not as limiting. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0032] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not intended to describe a particular order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a class, and do not limit the number of objects, for example, the first object can be one or more. In addition, the specification and claims "and / or" means at least one of the connected objects, and the character " / ", generally indicates that the associated objects before and after are in a "or" relationship.
[0033] It should be noted that in the description of the present application, the orientation or position relationship indicated by the terms such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is generally based on the orientation or position relationship shown in the drawings, only for the purpose of describing the present application and simplifying the description, without the opposite indication, these orientation terms do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation terms "inner, outer" refer to the inner and outer relative to the contour of each component.
[0034] It should be noted that, in the present application, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more limitations, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element. Also, it is to be noted that the scope of the methods and apparatus of the present embodiments are not limited by the order of the steps or the sequence for performing the steps, and can include performing the steps in different order, or substantially concurrently, or in reverse order, depending on the circumstances, e.g., the described methods can be performed in an order other than that described, and additional, fewer, or
[0035] Embodiment 1:
[0036] Referring to Figures 1-7 The present embodiment provides a preheating device on a screw feeder.
[0037] comprises:
[0038] The base 1, the top surface of the base 1 is fixedly installed with a screw feeder 2, the top surface of the screw feeder 2 is provided with a first feeding port 3, the top surface of the screw feeder 2 is fixedly installed with a first fixed box 4, the outer side wall of the first feeding port 3 is fixedly connected with the inner side wall of the first fixed box 4, one side of the first fixed box 4 is fixedly installed with a second fixed box 5, the second fixed box 5, the first fixed box 4 and the first feeding port 3 are communicated; a conveying pipe 6 is fixedly installed on the inner side wall of the second fixed box 5, a worm 7 is rotatably installed on the inner side wall of the conveying pipe 6, heating plates 12 are fixedly installed on both sides of the interior of the conveying pipe 6; a heat preservation cylinder 10 is arranged on the outer side wall of the screw feeder 2, heating strips 11 are fixedly installed on both sides of the interior of the heat preservation cylinder 10, and the two heating strips 11 are respectively located on both sides of the screw feeder 2; a gear ring 15 is fixedly installed on the outer side wall of the heat preservation cylinder 10, a first rotating shaft 13 is rotatably installed on one side of the second fixed box 5, one end of the first rotating shaft 13 extends into the conveying pipe 6 through one side of the second fixed box 5, one end of the first rotating shaft 13 is fixedly connected with one end of the worm 7, a second rotating shaft 16 is rotatably installed on one side of the second fixed box 5, a second gear 17 is fixedly installed on the outer side wall of the second rotating shaft 16, a first gear 14 is fixedly installed on the outer side wall of the first rotating shaft 13, the first gear 14 is engaged with the second gear 17, and the gear ring 15 is engaged with the second gear 17; two third rotating shafts 20 are rotatably installed on the top surface of the interior of the first fixed box 4, and first baffles 19 are fixedly installed on the outer side walls of the two third rotating shafts 20; an adjusting mechanism is arranged on the top surface of the first fixed box 4 and is used for adjusting the two first baffles 19, the first gear 14 rotates when the first rotating shaft 13 rotates, the worm 7 rotates when the first gear 14 rotates, the raw materials can be conveyed when the worm 7 rotates, the second gear 17 rotates when the first gear 14 rotates, the gear ring 15 rotates when the second gear 17 rotates, the heat preservation cylinder 10 rotates when the gear ring 15 rotates, the two heating strips 11 in the heat preservation cylinder 10 also rotate when the heat preservation cylinder 10 rotates, at this time, the two heating strips 11 are started, and the raw materials in the screw feeder 2 are heated comprehensively when the two heating strips 11 rotate, which has the practical benefit.
[0039] Embodiment 2:
[0040] The embodiment provides a preheating device on a screw feeder, in addition to the technical scheme of the above-mentioned embodiment, further has the following technical features.
[0041] The adjusting mechanism comprises two third fixed plates 21, the two third fixed plates 21 are fixedly installed on the two sides of the first fixed box 4, one fourth rotating shaft 22 is rotatably installed between the two third fixed plates 21, the top ends of the two third rotating shafts 20 extend to the outside of the first fixed box 4 through the inner top surface of the first fixed box 4, the top ends of the two third rotating shafts 20 are fixedly installed with first bevel gears 23, two second bevel gears 24 are fixedly installed on the outer side wall of the fourth rotating shaft 22, the two second bevel gears 24 are opposite to each other, the two second bevel gears 24 are meshed with the two first bevel gears 23 respectively, one side of one of the third fixed plates 21 is fixedly installed with a first motor 25, one end of the output shaft of the first motor 25 is fixedly connected with one end of the fourth rotating shaft 22, the fourth rotating shaft 22 is driven to rotate by starting the first motor 25, when the fourth rotating shaft 22 rotates, the two second bevel gears 24 will also rotate, since the two second bevel gears 24 are opposite to each other, when the two second bevel gears 24 rotate, the two first bevel gears 23 will be driven to rotate in opposite directions respectively, when the two first bevel gears 23 rotate in opposite directions, the two third rotating shafts 20 will also rotate in opposite directions, when the two third rotating shafts 20 rotate in opposite directions, the two first baffles 19 will also rotate in opposite directions, when the two first baffles 19 rotate and are leveled, the two first baffles 19 will be blocked, and the convenience is achieved.
[0042] Embodiment 3
[0043] The embodiment provides a preheating device on a screw feeder, in addition to the technical scheme of the above-mentioned embodiment, and has the following technical features.
[0044] The top surface of the conveying pipe 6 is provided with a second open groove 29, the top surface of the second fixed box 5 is provided with a second feeding port 18, the second feeding port 18 is in communication with the second open groove 29, one side of the second feeding port 18 is provided with a first open groove 26, the inner side wall of the second feeding port 18 is slidably installed with a second baffle 27, the second baffle 27 is slidably connected with the first open groove 26, the top surface of the second fixed box 5 is fixedly installed with an electric push rod 28, one end of the electric push rod 28 is fixedly connected with one side of the second baffle 27, the second baffle 27 is driven to slide by starting the electric push rod 28, when one side of the second baffle 27 abuts against the inner side wall of the second feeding port 18, the second baffle 27 can be isolated from the outside of the second fixed box 5, and the convenience is achieved.
[0045] Embodiment 4
[0046] The embodiment provides a preheating device on a screw feeder, in addition to the technical scheme of the above-mentioned embodiment, and has the following technical features.
[0047] The second fixed box 5 is fixedly installed on one side of the second motor 30, one end of the output shaft of the second motor 30 and one end of the first rotating shaft 13 are fixedly installed with the belt pulley 31, the same belt 32 is arranged on the two belt pulleys 31, and the second motor 30 drives the first rotating shaft 13 to rotate under the cooperation of the two belt pulleys 31 and the belt 32, which is convenient.
[0048] Embodiment 5:
[0049] The embodiment provides a preheating device on a screw feeder, in addition to the technical solutions of the above embodiments, and has the following technical features.
[0050] The outer side wall of the screw feeder 2 is fixedly installed with the first fixed plate 8 and the second fixed plate 9, the bottom surfaces of the first fixed plate 8 and the second fixed plate 9 are fixedly connected with the top surface of the base 1, the two ends of the heat preservation cylinder 10 are rotatably connected with the opposite sides of the first fixed plate 8 and the second fixed plate 9, and the first fixed plate 8 and the second fixed plate 9 provide support for the heat preservation cylinder 10, which is practical.
[0051] Embodiment 6:
[0052] The embodiment provides a preheating device on a screw feeder, in addition to the technical solutions of the above embodiments, and has the following technical features.
[0053] The end of the screw feeder 2 is fixedly installed with the discharge port 34, the valve 33 is arranged on the discharge port 34, and the valve 33 is started to discharge raw materials through the discharge port 34, which is convenient and efficient.
[0054] Embodiment 7:
[0055] The embodiment provides a preheating device on a screw feeder, in addition to the technical solutions of the above embodiments, and has the following technical features.
[0056] The bottom surface of the base 1 is fixedly installed with the two support plates 35, and the support plates 35 can improve the stability during work.
[0057] In use: before adding raw materials to the screw feeder, start the two heating plates 12 in the second fixed box 5, then add the raw materials into the conveying pipe 6 through the second feeding port 18, start the second motor 30 to drive the first rotating shaft 13 to rotate under the cooperation of the two belt pulleys 31 and the belt 32, when the first rotating shaft 13 rotates, the first gear 14 rotates, when the first gear 14 rotates, the auger 7 rotates, when the auger 7 rotates, the raw materials can be conveyed, under the action of the two heating plates 12, the raw materials are preheated when being conveyed, at this time, start the first motor 25 to drive the fourth rotating shaft 22 to rotate, when the fourth rotating shaft 22 rotates, the two second bevel gears 24 rotate, because the directions of the two second bevel gears 24 are opposite, when the two second bevel gears 24 rotate, the two first bevel gears 23 rotate in opposite directions, when the two first bevel gears 23 rotate in opposite directions, the two third rotating shafts 20 also rotate in opposite directions, when the two third rotating shafts 20 rotate in opposite directions, the two first baffles 19 also rotate in opposite directions, when the two first baffles 19 rotate and are level, start the electric push rod 28 to drive the second baffle 27 to slide, when one side of the second baffle 27 abuts against the inner side wall of the second feeding port 18, it is isolated from the outside of the second fixed box 5, which has a practical advantage, when the raw materials in the conveying pipe 6 are preheated, repeat the above operation to rotate the two first baffles 19 to block the conveying pipe 6, when the raw materials in the conveying pipe 6 fall into the screw feeder 2, start the screw feeder 2 to convey the raw materials, in order to ensure uniform preheating of the raw materials, when the first gear 14 rotates, the second gear 17 rotates, when the second gear 17 rotates, the gear ring 15 rotates, when the gear ring 15 rotates, the heat preservation cylinder 10 rotates, when the heat preservation cylinder 10 rotates, the two heating strips 11 in the heat preservation cylinder 10 also rotate, at this time, start the two heating strips 11, when the two heating strips 11 rotate, the raw materials in the screw feeder 2 are heated comprehensively, and repeat the above operation to rotate the two first baffles 19 to block the conveying pipe 6, this way can ensure that the raw materials in the screw feeder 2 are heated uniformly during preheating and prevent heat loss, ensure the quality of the preheated raw materials, after the raw materials are fully preheated, start the valve 33 to discharge the raw materials through the discharge port 34, which has the advantages of convenience and efficiency.
[0058] The embodiments of the present application are described above in combination with the drawings, the embodiments and the features in the embodiments in the present application can be combined with each other without conflict, the present application is not limited to the above specific embodiments, the above specific embodiments are only illustrative, not restrictive, and those skilled in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, which all belong to the protection of the present application.
Claims
1. A preheating device on a screw feeder, characterized in that The utility model relates to a kind of automatic feeding device for food processing, including: Base (1), the top surface of the base (1) is fixedly installed with screw feeder (2), the top surface of the screw feeder (2) is opened with first feed inlet (3), the top surface of the screw feeder (2) is fixedly installed with first fixed box (4), the outer lateral wall of the first feed inlet (3) is fixedly connected with the inner lateral wall of first fixed box (4), one side of the first fixed box (4) is fixedly installed with second fixed box (5), the second fixed box (5), first fixed box (4) and first feed inlet (3) are communicated; Conveying pipe (6), the inner lateral wall of the conveying pipe (6) is fixedly installed in second fixed box (5), the inner lateral wall of the conveying pipe (6) is rotatably installed with auger (7), the inside both sides of the conveying pipe (6) are fixedly installed with heating plate (12); Heat preservation cylinder (10), the outer lateral wall of the heat preservation cylinder (10) is arranged in screw feeder (2), the inside both sides of the heat preservation cylinder (10) are fixedly installed with heating strip (11), two the heating strip (11) is located at the two sides of screw feeder (2) respectively; Tooth ring (15), the outer lateral wall of the tooth ring (15) is fixedly installed in heat preservation cylinder (10), one side of the second fixed box (5) is rotatably installed with first rotation shaft (13), one end of the first rotation shaft (13) extends to the inside of conveying pipe (6) through one side of second fixed box (5), one end of the first rotation shaft (13) is fixedly connected with one end of auger (7), one side of the second fixed box (5) is rotatably installed with second rotation shaft (16), the outer lateral wall of the second rotation shaft (16) is fixedly installed with second gear (17), the outer lateral wall of the first rotation shaft (13) is fixedly installed with first gear (14), the first gear (14) is engaged with second gear (17), the tooth ring (15) is engaged with second gear (17); Two third rotation shafts (20), two the third rotation shaft (20) are rotatably installed in the inside top surface of first fixed box (4), the outer lateral wall of two the third rotation shaft (20) is fixedly installed with first baffle (19); Adjusting mechanism, the adjusting mechanism is arranged in the top surface of first fixed box (4), and is used to adjust two first baffles (19).
2. A preheating device on a screw feeder as claimed in claim 1, characterized in that The adjusting mechanism comprises two third fixed plates (21), the two third fixed plates (21) are fixedly installed on the two sides of the first fixed box (4), one fourth rotating shaft (22) is rotatably installed between the two third fixed plates (21), the top ends of the two third rotating shafts (20) extend to the outside of the first fixed box (4) through the inside top surface of the first fixed box (4), the top ends of the two third rotating shafts (20) are fixedly installed with first bevel gears (23), two second bevel gears (24) are fixedly installed on the outer side wall of the fourth rotating shaft (22), the two second bevel gears (24) are opposite to each other, the two second bevel gears (24) are meshed with the two first bevel gears (23) respectively, one side of one of the third fixed plates (21) is fixedly installed with a first motor (25), and one end of the output shaft of the first motor (25) is fixedly connected with one end of the fourth rotating shaft (22).
3. A preheating device for a screw feeder as claimed in claim 1, characterized in that The top surface of the conveying pipe (6) is provided with a second opening groove (29), the top surface of the second fixed box (5) is provided with a second feeding port (18), the second feeding port (18) is in communication with the second opening groove (29), one side of the second feeding port (18) is provided with a first opening groove (26), the inner side wall of the second feeding port (18) is slidably installed with a second baffle (27), the second baffle (27) is slidably connected with the first opening groove (26), and the top surface of the second fixed box (5) is fixedly installed with an electric push rod (28). One end of the electric push rod (28) is fixedly connected with one side of the second baffle (27).
4. A preheating device for a screw feeder as claimed in claim 1, characterized in that One end of the output shaft of the second motor (30) and one end of the first rotating shaft (13) are fixedly installed with a belt pulley (31), and one belt (32) is arranged on the two belt pulleys (31).
5. A preheating device for a screw feeder as claimed in claim 1, characterized in that The outer side wall of the screw feeder (2) is fixedly installed with a first fixed plate (8) and a second fixed plate (9), the bottom surfaces of the first fixed plate (8) and the second fixed plate (9) are fixedly connected with the top surface of the base (1), and the two ends of the heat preservation cylinder (10) are rotatably connected with the opposite sides of the first fixed plate (8) and the second fixed plate (9).
6. A preheating device for a screw feeder as claimed in claim 1, characterized in that One end of the screw feeder (2) is fixedly installed with a discharge port (34), and the discharge port (34) is provided with a valve (33).
7. A preheating device for a screw feeder as claimed in claim 1, characterized in that The bottom surface of the base (1) is fixedly installed with two supporting plates (35).