A screw feeder with a rear end material handling function

Abstract

The present application relates to the technical field of rotary feeders, and specifically relates to a spiral feeder with rear-end material processing function, which comprises a mounting plate, one end of the mounting plate is fixedly connected with a positioning frame, the other end of the mounting plate is provided with an extension plate, and a discharging conveyor belt is arranged below the positioning frame; a spiral extruder is fixedly installed on the top surface of the mounting plate, and the spiral extruder is used for extruding the material; a temperature control assembly is arranged on the outer surface of a feeding pipe, and the temperature control assembly is used for adjusting the temperature inside the feeding pipe; a discharging assembly is arranged at the top end of the positioning frame, one end of the discharging assembly is communicated with one end of the feeding pipe, and the discharging assembly is used for cooling and conveying the material. Compared with the prior art, the present application is provided with the discharging assembly, raw materials are placed and cooled in the interior of the discharging box, and when the raw materials in the interior of the discharging box are accumulated to a certain degree, the self-gravity drives the bottom movable discharging guide plate on one side to tilt downward and rotate for discharging.

Description

Technical Field

[0001] This invention relates to the field of rotary feeder technology, and more particularly to a rotary feeder with a back-end material handling function. Background Technology

[0002] A screw feeder is a device used to uniformly and continuously transport granular, powdery, or granular-powder mixtures of materials from storage devices such as silos, containers, or hoppers to downstream equipment or processes. It typically consists of a screw conveying mechanism, which uses the rotational motion of the screw to transport materials along the spiral grooves of a conveying pipe or trough. Screw feeders are commonly found in various industrial fields, such as chemical, metallurgical, building materials, and food processing, for conveying various raw materials, powders, granular materials, and mixtures. Its working principle is that the rotation of the screw propels the material along the spiral grooves of the conveying pipe or trough, thus achieving material conveying and supply.

[0003] In traditional screw feeders, the raw material is typically heated and mixed during the screw extrusion process to reach a certain temperature. However, such high temperatures can cause the raw material to deform or soften. Therefore, cooling is required at the discharge end to maintain its shape and structural stability, thereby ensuring product quality and appearance. Furthermore, this high temperature is usually not sustainable, yet cooling is necessary to maintain the integrity of the material. Therefore, complex or costly cooling mechanisms are not required for the cooling process. Thus, this application provides a screw feeder with a downstream material handling function to meet the low-cost cooling requirements of the screw feeder's downstream end, thereby maintaining its shape and structural stability. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a screw feeder with a back-end material handling function to solve the problem that the high temperature of the back-end material can cause the raw material to easily deform or soften.

[0005] To achieve the above objectives, the present invention provides a screw feeder with a back-end material handling function, including a mounting plate, a positioning frame fixedly connected to one end of the mounting plate, a support plate provided at the bottom of both the mounting plate and the positioning frame, a traveling wheel rotatably mounted at the bottom of the support plate, an extension plate provided at the other end of the mounting plate, a positioning groove extending through the upper side of the mounting plate, and a discharge conveyor belt provided below the positioning frame.

[0006] A screw extruder is fixedly installed on the top surface of the mounting plate. The screw extruder is used to extrude materials. The screw extruder includes a drive motor and a gearbox fixedly installed on the extension plate, and a screw conveyor fixedly installed on the mounting plate. The outer surface of the screw conveyor is also covered with a feeding pipe. One end of the screw conveyor is fixedly connected to the output end of the gearbox. A feed hopper is provided on the top side of the screw extrusion assembly near the extension plate.

[0007] A temperature control component is disposed on the outer surface of the feeding tube, and the temperature control component is used to regulate the temperature inside the feeding tube;

[0008] The discharge assembly is located at the top of the positioning frame. One end of the discharge assembly is connected to one end of the feeding pipe. The discharge assembly is used to cool and transport materials.

[0009] Preferably, the extension plate and the mounting plate are arranged in a stepped manner, and the bottom of the positioning frame near the mounting plate is provided with a discharge groove for discharging materials in conjunction with the discharge assembly.

[0010] Preferably, the temperature control component includes several sets of temperature control blocks wrapped around the outer surface of the feeding tube, each set of temperature control blocks consists of two blocks, and the two temperature control blocks are arranged opposite to each other, and the temperature control component is located inside the positioning groove.

[0011] Preferably, the bottom of each of the two temperature control blocks is provided with an air inlet connected to each other. The air inlet is arranged in an inverted triangular shape and is hollow. A fan is also provided at the bottom of the air inlet, and the outlet of the fan is connected to the air inlet. The bottom of each of the two temperature control blocks is provided with an air inlet for air intake, and the top of each of the two temperature control blocks is provided with an air outlet for air exhaust.

[0012] Preferably, the temperature control block is made of aluminum alloy.

[0013] Preferably, the discharge assembly includes a discharge box fixedly installed on the positioning frame. The discharge box has a feed inlet on the side near the screw extruder. A movable discharge guide plate adapted to the discharge trough is rotatably installed on the bottom of the discharge box. Slide grooves are provided on both sides of the discharge box. A connecting plate is slidably installed inside the slide groove. A rotating shaft is provided on both sides of the connecting plate. The rotating shaft near the slide groove is slidably installed inside the slide groove. The other side of the connecting plate is rotatably connected to one side of the movable discharge guide plate through the rotating shaft.

[0014] Preferably, an installation block is fixedly installed inside the discharge box on the side away from the screw extruder, and a telescopic frame is movably installed on the other end of the installation block. A push plate is rotatably connected to the end of the telescopic frame near the feed inlet. Auxiliary wheels are rotatably installed at the four corners of the bottom of the installation block. A return spring is provided at the bottom of the side of the push plate away from the feed inlet, and the other end of the return spring is fixedly connected to the inner wall of the discharge box.

[0015] Preferably, the bottom of the telescopic frame is rotatably connected to both ends of a connecting rod, and the other end of the connecting rod is fixedly connected to a rotating shaft on one side of the connecting plate.

[0016] Preferably, a fixing plate is provided at the connection between the screw extruder and the discharge assembly, and a positioning plate is provided on both sides of the fixing plate. The two sides of the fixing plate are respectively embedded in the two positioning plates, and a square through groove is provided in the middle of the fixing plate.

[0017] Preferably, each of the two positioning plates is provided with an electric telescopic rod in the center of its interior. The telescopic end of the electric telescopic rod passes through the fixed plate and enters the square through slot. The output ends of the two electric telescopic rods are also fixedly connected to sliders. The opposite surfaces of the two sliders are provided with arc-shaped openings.

[0018] The beneficial effects of this invention are:

[0019] 1. This type of screw feeder with back-end material handling function, by setting up a discharge component, allows the raw materials to be mixed and extruded from the screw extruder and first enter the discharge box. The raw materials are then placed and cooled inside the discharge box. When the raw materials accumulate to a certain level inside the discharge box, their own gravity causes one side of the movable discharge guide plate at the bottom to tilt and rotate downwards. Simultaneously, the movable discharge guide plate tilts and rotates, causing the other end of the connecting plate to slide inside the chute. The sliding of the rotating shaft inside the chute causes one side of the telescopic frame to move synchronously, thereby moving the push plate towards the feed inlet. This pushes the raw materials away from the feed inlet into the movable discharge guide plate for discharge, and then compresses the material just exiting the screw... The extruded raw material in the extruder accumulates and cools near the inlet in the discharge box. After a certain amount of material has been discharged, the push plate is reset by the return spring, which in turn drives the movable discharge guide plate to reset and seal the discharge box, awaiting the next cooling and discharge. The movable discharge guide plate and push plate can precisely control the amount of raw material accumulation, avoiding excessive or insufficient accumulation, ensuring the stability and consistency of the production process, and improving product quality. During its movement, the push plate can clean the area around the discharge port, preventing raw material residue and blockage, keeping the production equipment clean and operating normally. It can also adjust the shape of the raw material accumulation to a certain extent, making it more uniform or compact, ensuring the appearance and quality of the product.

[0020] 2. This type of screw feeder with back-end material handling function, by setting up fixed plates and positioning plates, allows for adjustment of the discharge port width as needed. The operator changes the position of the slider by controlling the electric telescopic rod. The extension and retraction of the electric telescopic rod causes the slider to move horizontally inside the fixed plates, thereby changing the distance between the fixed plates. The change in the distance between the fixed plates leads to the adjustment of the discharge port width, thus adapting to the production needs of products of different sizes. This makes the adjustment of the discharge port more flexible and convenient, allowing for adjustment of the discharge port width according to production needs and adapting to the production of products of different sizes. The operator can adjust the discharge port width by controlling the electric telescopic rod, eliminating the need for manual adjustment, thus improving production efficiency and operational convenience.

[0021] 3. This type of screw feeder with back-end material handling function is equipped with a temperature control component. External air is blown into the air inlet hopper and then enters between two temperature control blocks. The hollow design of the air inlet hopper allows air to flow smoothly through the temperature control blocks, thereby achieving temperature regulation. The temperature control blocks process the air by heating or cooling according to the set temperature requirements, thus achieving precise regulation of the temperature inside the feeding tube. Finally, the air passing through the temperature control blocks is discharged from the system, ensuring the air circulation and temperature regulation effect within the system. The temperature control blocks control the temperature inside the feeding tube by heating or cooling the air, which helps maintain a suitable temperature for the raw material during the extrusion process, ensuring the stability of extrusion effect and product quality. The two opposing temperature control blocks can provide uniform heating or cooling effect, making the temperature distribution inside the tube more uniform and avoiding product quality problems caused by uneven temperature. The temperature control blocks are made of aluminum alloy, which has good thermal conductivity and heat dissipation, and can more effectively transfer and control heat, improving the accuracy and stability of temperature control. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the mounting plate and mounting bracket structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal perspective structure of the material discharge component of the present invention;

[0026] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0027] Figure 5 This is a schematic diagram of the material discharge state structure of the material discharge component of the present invention;

[0028] Figure 6 This is a schematic diagram of the cooling component structure of the present invention;

[0029] Figure 7 This is a cross-sectional view of the cooling assembly of the present invention;

[0030] Figure 8 This is a schematic diagram of the feeding hopper and screw conveyor structure of the present invention.

[0031] The diagram is marked as follows:

[0032] 1. Mounting plate; 2. Positioning frame; 3. Support plate; 4. Extension plate; 5. Positioning groove; 6. Discharge chute; 7. Drive motor; 8. Gearbox; 9. Screw conveyor; 10. Feed hopper; 11. Temperature control block; 12. Air inlet hopper; 13. Air inlet; 14. Air outlet; 15. Fan; 16. Fixing plate; 17. Positioning plate; 18. Electric telescopic rod; 19. Slider; 20. Arc-shaped opening; 21. Discharge box; 22. Feed inlet; 23. Movable discharge guide plate; 24. Slide chute; 25. Connecting plate; 26. Mounting block; 27. Telescopic frame; 28. Push plate; 29. ​​Connecting rod; 30. Discharge conveyor belt. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0034] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] like Figures 1 to 8As shown, a screw feeder with a rear-end material handling function includes a mounting plate 1. A positioning frame 2 is fixedly connected to one end of the mounting plate 1. Support plates 3 are provided at the bottom of both the mounting plate 1 and the positioning frame 2. Traveling wheels are rotatably mounted on the bottom of the support plates 3. An extension plate 4 is provided at the other end of the mounting plate 1. A positioning groove 5 is provided through the upper side of the mounting plate 1. A discharge conveyor belt 30 is provided below the positioning frame 2. A screw extruder is fixedly installed on the top surface of the mounting plate 1. The screw extruder is used to extrude materials. The screw extruder includes a drive motor 7 and a reduction gearbox 8 fixedly installed on the extension plate 4, and a screw fixedly installed on the mounting plate 1. The spiral conveyor 9 has a feeding pipe wrapped around its outer surface. One end of the spiral conveyor 9 is fixedly connected to the output end of the gearbox 8. A feeding hopper 10 is provided on the top side of the spiral extrusion assembly near the extension plate 4. A temperature control assembly is provided on the outer surface of the feeding pipe and is used to regulate the temperature inside the feeding pipe. A discharge assembly is provided on the top of the positioning frame 2. One end of the discharge assembly is connected to one end of the feeding pipe and is used to cool and transport the material. The extension plate 4 and the mounting plate 1 are arranged in a stepped manner. A discharge groove 6 is provided on the bottom side of the positioning frame 2 near the mounting plate 1 to cooperate with the discharge assembly for discharge.

[0036] The raw material first enters the feed hopper 10 of the screw extruder through the feed hopper 10. The drive motor 7 and the gearbox 8 drive the screw conveyor 9 to start extruding the raw material. The screw conveyor 9 pushes the raw material forward. After being processed by the extrusion section, the raw material is delivered evenly and continuously. During the extrusion process, the temperature control component regulates the temperature inside the feed tube. The temperature control component is located on the outer surface of the feed tube and can ensure that the material maintains an appropriate temperature during extrusion and conveying to meet the production process requirements. The extruded raw material may be in a high temperature state, so it needs to be cooled. The discharge component is located at the top of the positioning frame 2 and is used to place and cool the extruded material for a certain period of time. The cooled material is conveyed to the next process for feeding operation through the discharge chute 6 and the discharge conveyor belt 30.

[0037] like Figure 1 , Figure 6 , Figure 7 As shown, the temperature control component includes several sets of temperature control blocks 11 wrapped around the outer surface of the feeding pipe. Each set of temperature control blocks 11 consists of two blocks, which are arranged opposite each other. The temperature control component is located inside the positioning groove 5. The bottom of each of the two temperature control blocks 11 is connected to an air inlet hopper 12. The air inlet hopper 12 is arranged in an inverted triangular shape and is hollow. A fan 15 is also provided at the bottom of the air inlet hopper 12. The outlet of the fan 15 is connected to the air inlet hopper 12. An air inlet 13 is provided at the bottom of each of the two temperature control blocks 11 for air intake, and an air outlet 14 is provided at the top of each of the two temperature control blocks 11 for air exhaust. The temperature control blocks 11 are made of aluminum alloy.

[0038] When temperature regulation of the feeding tube is required, the blower 15 starts, blowing external air into the air inlet hopper 12. The air then enters between the two temperature control blocks 11. The hollow design of the air inlet hopper 12 allows air to flow smoothly through the temperature control blocks 11, thereby achieving temperature regulation. The temperature control blocks 11 process the air by heating or cooling it according to the set temperature requirements, thus achieving precise temperature regulation inside the feeding tube. Finally, the air passing through the temperature control blocks 11 is discharged from the system, ensuring air circulation and temperature regulation within the system. The temperature control blocks 11 control the temperature inside the feeding tube by heating or cooling the air, which helps maintain a suitable temperature for the raw material during the extrusion process, ensuring the stability of extrusion effect and product quality. The two opposing temperature control blocks 11 can provide uniform heating or cooling effects, making the temperature distribution inside the tube more uniform and avoiding product quality problems caused by uneven temperature. The temperature control blocks 11 are made of aluminum alloy, which has good thermal conductivity and heat dissipation, and can more effectively transfer and control heat, improving the accuracy and stability of temperature control.

[0039] like Figure 3 , Figure 5 As shown, the discharge assembly includes a discharge box 21 fixedly mounted on the positioning frame 2. A feed inlet 22 is provided on the side of the discharge box 21 near the screw extruder. A movable discharge guide plate 23, adapted to the discharge trough 6, is rotatably mounted on the bottom of the discharge box 21. Slide grooves 24 are provided on both sides of the discharge box 21. A connecting plate 25 is slidably mounted inside the slide groove 24. A rotating shaft is provided on both sides of the connecting plate 25. The rotating shaft on the side near the slide groove 24 is slidably mounted inside the slide groove 24. The other side of the connecting plate 25 is rotatably connected to one side of the movable discharge guide plate 23 via a rotating shaft. An installation block 26 is fixedly installed on the side of the inside of the 21 away from the screw extruder. A telescopic frame 27 is movably installed on the other end of the installation block 26. A push plate 28 is rotatably connected to the end of the telescopic frame 27 near the feed inlet 22. Auxiliary wheels are rotatably installed at the four corners of the bottom of the installation block 26. A return spring is provided at the bottom of the side of the push plate 28 away from the feed inlet 22, and the other end of the return spring is fixedly connected to the inner wall of the discharge box 21. A connecting rod 29 is rotatably connected to both ends of the bottom side of the telescopic frame 27. The other end of the connecting rod 29 is fixedly connected to the rotating shaft on one side of the connecting plate 25.

[0040] After the screw extruder mixes and extrudes the raw materials, they first enter the discharge box 21. The raw materials are then placed inside the discharge box 21 for cooling. When the raw materials accumulate to a certain level inside the discharge box 21, their own gravity causes one side of the movable discharge guide plate 23 at the bottom to tilt and rotate downwards. Simultaneously, the movable discharge guide plate 23 tilts and rotates, causing the other end of the connecting plate 25 to slide inside the chute 24. The sliding of the rotating shaft inside the chute 24 causes one side of the telescopic frame 27 to move synchronously, thereby moving the push plate 28 towards the feed inlet 22. This pushes the raw materials away from the feed inlet 22 into the movable discharge guide plate 23 for discharge, and compresses the raw materials just extruded from the screw extruder, piling them in the discharge box 21 near the feed inlet 22. The material is placed and cooled to form a solid mass. After a certain amount of material has been discharged, the push plate 28 is reset by the return spring, which in turn drives the movable discharge guide plate 23 to reset and block the discharge box 21, waiting for the next cooling and discharge. The automated discharge process reduces the need for manual operation, lowers labor costs, and reduces reliance on operators. The design of the movable discharge guide plate 23 can precisely control the amount of raw material accumulation, avoiding excessive or insufficient accumulation, ensuring the stability and consistency of the production process. Moreover, during the movement of the push plate 28, the area around the discharge port can be cleaned to prevent raw material residue and blockage, keeping the production equipment clean and operating normally. It can also adjust the shape of the raw material accumulation to a certain extent, making it more uniform or compact, ensuring the appearance and quality of the product.

[0041] like Figure 3 , Figure 4 As shown, a fixing plate 16 is also provided at the connection between the screw extruder and the discharge assembly. Positioning plates 17 are provided on both sides of the fixing plate 16. The two sides of the fixing plate 16 are respectively embedded in the two positioning plates 17. A square through groove is opened in the middle of the fixing plate 16. An electric telescopic rod 18 is provided in the middle of the interior of the two positioning plates 17. The telescopic end of the electric telescopic rod 18 passes through the fixing plate 16 and enters the square through groove. The output end of the two electric telescopic rods 18 is also fixedly connected to a slider 19. An arc-shaped opening 20 is opened on the opposite surface of the two sliders 19.

[0042] The width of the discharge port can be adjusted as needed. The operator controls the electric telescopic rod 18 to change the position of the slider 19. The extension and retraction of the electric telescopic rod 18 causes the slider 19 to move horizontally inside the fixed plate 16, thereby changing the distance between the fixed plates 16. The change in the distance between the fixed plates 16 leads to the adjustment of the discharge port width, thus adapting to the production needs of products of different sizes. The arc-shaped opening 20 allows the slider 19 to move horizontally inside the fixed plate 16, thereby adjusting the distance between the fixed plates 16. By controlling the extension and retraction of the electric telescopic rod 18, the position of the slider 19 can be adjusted, realizing the change of the discharge port width. This makes the adjustment of the discharge port more flexible and convenient. The width of the discharge port can be adjusted according to production needs to adapt to the production of products of different sizes. The operator can adjust the width of the discharge port by controlling the electric telescopic rod 18 without manual adjustment, improving production efficiency and operational convenience.

[0043] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0044] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A screw feeder with back-end material handling function, characterized in that, include: Mounting plate (1), one end of which is fixedly connected to a positioning frame (2), both the mounting plate (1) and the positioning frame (2) are provided with a support plate (3) at the bottom, both the support plate (3) are rotatably mounted with a walking wheel at the bottom, the other end of the mounting plate (1) is provided with an extension plate (4), a positioning groove (5) is provided through the upper side of the mounting plate (1), and a discharge conveyor belt (30) is provided below the positioning frame (2). A screw extruder is fixedly installed on the top surface of the mounting plate (1). The screw extruder is used to extrude materials. The screw extruder includes a drive motor (7) and a gearbox (8) fixedly installed on the extension plate (4), and a screw conveyor (9) fixedly installed on the mounting plate (1). The outer surface of the screw conveyor (9) is also covered with a feeding pipe. One end of the screw conveyor (9) is fixedly connected to the output end of the gearbox (8). A feed hopper (10) is provided on the top side of the screw extrusion assembly near the extension plate (4). A temperature control component is disposed on the outer surface of the feeding tube, and the temperature control component is used to regulate the temperature inside the feeding tube; The discharge assembly is located at the top of the positioning frame (2), and one end of the discharge assembly is connected to one end of the feeding pipe. The discharge assembly is used to cool and transport the material. The extension plate (4) and the mounting plate (1) are arranged in a stepped manner. The bottom of the positioning frame (2) near the mounting plate (1) is provided with a discharge groove (6) for discharging material in conjunction with the discharge assembly. The discharge assembly includes a discharge box (21) fixedly installed on the positioning frame (2). The discharge box (21) is provided with a feed inlet (22) near the screw extruder. The bottom of the discharge box (21) is rotatably installed with a movable discharge guide plate (23) adapted to the discharge groove (6). Both sides of the discharge box (21) are provided with sliding grooves (24). A connecting plate (25) is slidably installed inside the sliding groove (24). Both sides of the connecting plate (25) are provided with rotating shafts near the sliding groove. (24) A rotating shaft on one side is slidably installed inside the chute (24). The other side of the connecting plate (25) is rotatably connected to one side of the movable discharge guide plate (23) via a rotating shaft. An installation block (26) is fixedly installed inside the discharge box (21) on the side away from the screw extruder. A telescopic frame (27) is movably installed at the other end of the installation block (26). A push plate (28) is rotatably connected to the end of the telescopic frame (27) near the feed inlet (22). Auxiliary wheels are rotatably installed at the four corners of the bottom of the installation block (26). A return spring is provided at the bottom of the side of the push plate (28) away from the feed inlet (22), and the other end of the return spring is fixedly connected to the inner wall of the discharge box (21).

2. The screw feeder with back-end material handling function according to claim 1, characterized in that, The temperature control component includes several sets of temperature control blocks (11) wrapped around the outer surface of the feeding tube. Each set of temperature control blocks (11) consists of two blocks, and the two temperature control blocks (11) are arranged opposite each other. The temperature control component is located inside the positioning groove (5).

3. The screw feeder with back-end material handling function according to claim 2, characterized in that, The bottom of each of the two temperature control blocks (11) is provided with an air inlet hopper (12) connected to each other. The air inlet hopper (12) is arranged in an inverted triangle shape and is hollow. A fan (15) is also provided at the bottom of the air inlet hopper (12). The outlet of the fan (15) is connected to the air inlet hopper (12). The bottom of each of the two temperature control blocks (11) is provided with an air inlet (13) for air intake, and the top of each of the two temperature control blocks (11) is provided with an air outlet (14) for air exhaust.

4. The screw feeder with back-end material handling function according to claim 3, characterized in that, The temperature control block (11) is made of aluminum alloy.

5. The screw feeder with back-end material handling function according to claim 1, characterized in that, The bottom of the telescopic frame (27) is rotatably connected to two ends of a connecting rod (29), and the other end of the connecting rod (29) is fixedly connected to the rotating shaft on one side of the connecting plate (25).

6. The screw feeder with back-end material handling function according to claim 1, characterized in that, A fixing plate (16) is also provided at the connection between the screw extruder and the discharge assembly. Positioning plates (17) are provided on both sides of the fixing plate (16). The two sides of the fixing plate (16) are respectively embedded in the two positioning plates (17). A square through groove is provided in the middle of the fixing plate (16).

7. The screw feeder with back-end material handling function according to claim 6, characterized in that, Both of the positioning plates (17) are provided with electric telescopic rods (18) in the middle of their interiors. The telescopic ends of the electric telescopic rods (18) pass through the fixed plate (16) and enter the square through slot. The output ends of the two electric telescopic rods (18) are also fixedly connected with sliders (19). The opposite surfaces of the two sliders (19) are provided with arc-shaped openings (20).

Images