A dryer fire extinguishing device
By using a rotating shaft to drive a mixing shaft to stir the materials and installing spray heads inside the drying chamber to extinguish the fire, the problem of easy combustion at the material outlet is solved, thus improving the fire safety and drying effect of the dryer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KAIYUAN HONGXING MASCH MFG CO LTD
- Filing Date
- 2025-04-17
- Publication Date
- 2026-06-26
AI Technical Summary
The accumulation of materials at the discharge port of existing dryers is flammable and reduces fire safety.
The material is stirred by the stirring shaft by the connecting rod and the mounting plate driven by the rotating shaft, and a ring pipe and spray head are installed in the drying box for fire extinguishing.
It improves the drying effect of materials and fire safety, prevents materials from accumulating and burning at the discharge port, and can extinguish fires in a timely manner.
Smart Images
Figure CN224415654U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of dryer technology, specifically relating to a fire-fighting device for a dryer. Background Technology
[0002] In related technologies, when drying materials, the materials are usually placed inside a dryer and hot air flows out of the dryer, thereby removing moisture from the materials and reducing their moisture content, thus achieving the drying effect.
[0003] The prior art (authorization announcement number: CN2887346Y) discloses a sprinkler fire extinguishing device. After connecting a fire water source inside the dryer, an effective fire extinguishing zone can be formed below the sprinkler pipe. The water sprayed from each sprinkler head can cover the entire fire area, thus effectively extinguishing the fire.
[0004] In this prior art, since the hot air temperature is between 30 and 160°C, once the material accumulates at the discharge port, the material will condense at high temperature, which can easily cause the material to catch fire and reduce the fire safety of the product. Utility Model Content
[0005] To address the problem in existing technologies where material accumulation at the discharge port can lead to ignition and combustion due to high temperatures, thus reducing product fire safety, this invention provides a fire-fighting device for a dryer. This device utilizes a rotating shaft that, through a connecting rod and mounting plate, drives a stirring shaft to rotate. This stirring shaft agitates the material, preventing combustion caused by excessively high temperatures within the drying chamber and material accumulation at the discharge port, thereby improving product fire safety. The specific technical solution is as follows:
[0006] A fire-fighting device for a dryer includes: a feed box, a drying box, a heating mechanism, a rotating shaft, a conveying hole, spiral blades, a connecting rod, a mounting plate, a stirring shaft, an annular pipe, a spray head, a discharge port, and a feed inlet; the feed box is a hollow cavity; the drying box is a hollow cavity, installed on top of the feed box, and the drying box and feed box are staggered; the heating mechanism is installed on the outside of the drying box, and the output end of the heating mechanism is connected to the drying box; the rotating shaft passes through the drying box and the feed box in sequence, and is rotatably connected to both the drying box and the feed box; the conveying hole is located on the top of the feed box, connected to the drying box, and is arranged around the outside of the rotating shaft; multiple A set of spiral blades is mounted on the outside of the rotating shaft, with multiple spiral blades located inside the feed box and drying box respectively; one end of the connecting rod is connected to the outer wall of the rotating shaft, and the connecting rod is located above the multiple spiral blades; the mounting plate is L-shaped, and the mounting plate is connected to the other end of the connecting rod; the stirring shaft is connected to the bottom of the mounting plate; the annular pipe is located inside the drying box, installed at the top of the drying box, and wrapped around the outside of the rotating shaft, and the annular pipe is connected to the water source; multiple spray heads are installed on the annular pipe; the discharge port is located at the bottom of the drying box, and the discharge port is located outside the feed box; the feed inlet is located at the top of the feed box, and the feed inlet is located outside the drying box.
[0007] In addition, the fire-fighting device for the dryer in the above-mentioned technical solution provided by this utility model may also have the following additional technical features:
[0008] In the above technical solution, the fire-fighting device of the dryer further includes: a first conveying cylinder and a second conveying cylinder; the first conveying cylinder is a hollow cavity with openings at both ends, the first conveying cylinder is located inside the feed box, the first conveying cylinder is wound around the outside of the spiral blades, and the first conveying cylinder is connected to the top of the feed box; the second conveying cylinder is a hollow cavity with openings at both ends, the second conveying cylinder is located inside the drying box, the second conveying cylinder is wound around the outside of the spiral blades, and the second conveying cylinder is connected to the bottom of the drying box.
[0009] In the above technical solution, the fire-fighting device of the dryer also includes: a support base, a slide groove, and a slider; the support base is annular and is installed on the inner wall of the drying chamber, and is arranged around the outside of the rotating shaft; the slide groove is annular and is arranged on the inner wall of the support base; the slider is connected to the mounting plate and is embedded in the slide groove; wherein, the width of the slider is greater than the width of the mounting plate.
[0010] In the above technical solution, the fire-fighting device for the dryer also includes: a limiting plate; the limiting plate is ring-shaped, and two limiting plates are installed on the inner wall of the support base, with the two limiting plates located on both sides of the mounting plate; wherein, the distance between the two limiting plates is less than the width of the slider.
[0011] In the above technical solution, the fire-fighting device of the dryer also includes: a motor frame and a motor; the motor frame is installed on the top of the drying box; the motor is equipped with an output shaft, the motor is installed on the motor frame, and the output shaft of the motor is connected to the rotating shaft.
[0012] In the above technical solution, the fire-fighting device of the dryer also includes: a feeding hopper and a guide surface; the feeding hopper is a hollow cavity with openings at both the top and bottom, the cross-section of the feeding hopper is trapezoidal, and the feeding hopper is connected to the feed inlet; the guide surface is an inclined surface, the guide surface is set at the bottom of the feeding box, and the guide surface is located on one side of the rotating shaft; wherein, the guide surface is located below the feed inlet.
[0013] The fire-fighting device for a dryer of this utility model has the following advantages compared with the prior art:
[0014] 1. By connecting both ends of the connecting rod to the rotating shaft and the mounting plate respectively, and connecting the stirring shaft to the bottom of the mounting plate, the rotating shaft drives the stirring shaft to rotate via the connecting rod and the mounting plate when it rotates. This stirs the material, improving the drying effect and preventing material accumulation at the discharge port. This avoids the risk of combustion due to excessively high temperatures inside the drying chamber and material buildup at the discharge port, thus enhancing the product's fire safety. Simultaneously, by installing a ring-shaped pipe at the top of the drying chamber, connecting it to a water source, and installing multiple spray heads on the ring-shaped pipe, even if the material ignites, water from the water source can enter the ring-shaped pipe and be sprayed out through the spray heads to extinguish the fire, further improving the product's fire safety.
[0015] 2. By placing the second conveying cylinder inside the drying chamber and connecting it to the bottom of the drying chamber, the drying chamber supports the second conveying cylinder, allowing the spiral blades to rotate inside the second conveying cylinder. This enables the material to move upward along the inner wall of the second conveying cylinder and flow out from the top of the second conveying cylinder, thus preventing the material from accumulating at the bottom of the drying chamber and improving the drying effect.
[0016] 3. By connecting the slider to the mounting plate and embedding the slider into the groove, the slider and the mounting plate can rotate synchronously, thereby enabling the slider to move within the groove. This, in turn, allows the support base to support the slider and the mounting plate, thus improving the stability of the rotation of the mounting plate and the stirring shaft.
[0017] 4. By installing two limiting plates on the inner wall of the support base and placing the two limiting plates on both sides of the mounting plate, the support base supports the two limiting plates, thereby limiting the slider to prevent the slider from moving out of the groove, thus improving the user experience of the product.
[0018] 5. By mounting the motor frame on the top of the drying oven and the motor on the motor frame, the motor frame supports the motor, thereby improving the stability of the motor; by connecting the output shaft of the motor to the rotating shaft, the motor can drive the rotating shaft to rotate, thereby providing power for rotating the shaft.
[0019] 6. By connecting the trapezoidal cross-section feed hopper to the feed inlet, the feeding area of the feed inlet is increased, thereby reducing the difficulty of material entering the feeding box and improving the user experience of the product. Attached Figure Description
[0020] Figure 1 This is a cross-sectional view of a fire-fighting device for a dryer according to the present invention;
[0021] Figure 2 for Figure 1 Enlarged view of a portion at point A;
[0022] Figure 3 for Figure 1 A magnified view of section B;
[0023] Figure 4 This is a perspective view of the support base of this utility model;
[0024] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows:
[0025] 10 Feeding box, 11 Drying box, 12 Heating mechanism, 13 Rotating shaft, 14 Feeding hole, 15 Spiral blade, 16 Connecting rod, 17 Mounting plate, 18 Stirring shaft, 19 Annular pipe, 20 Spray head, 21 Discharge port, 22 Feeding port, 23 First feeding cylinder, 24 Second feeding cylinder, 25 Support base, 26 Slider, 27 Limiting plate, 28 Motor frame, 29 Motor, 30 Feeding hopper, 31 Guide surface, 32 Slide groove. Detailed Implementation
[0026] The following are specific implementation cases and appendices. Figures 1 to 4 The present invention will be further described below, but the present invention is not limited to these embodiments.
[0027] A fire-fighting device for a dryer, such as Figures 1 to 4As shown, the fire-fighting device for the dryer includes: a feed box 10, a drying box 11, a heating mechanism 12, a rotating shaft 13, a conveying hole 14, spiral blades 15, a connecting rod 16, a mounting plate 17, a stirring shaft 18, an annular pipe 19, a spray head 20, a discharge port 21, and a feed port 22; the feed box 10 is a hollow cavity; the drying box 11 is a hollow cavity, and the drying box 11 is installed on top of the feed box 10, and the drying box 11 and the feed box 10 are staggered; the heating mechanism 12 is installed on the outside of the drying box 11, and the output end of the heating mechanism 12 is connected to the drying box 11; the rotating shaft 13 passes through the drying box 11 and the feed box 10 in sequence, and the rotating shaft 13 is rotatably connected to both the drying box 11 and the feed box 10; the conveying hole 14 is located on the top of the feed box 10, the conveying hole 14 is connected to the drying box 11, and the conveying hole 14 is arranged around the outside of the rotating shaft 13; Multiple spiral blades 15 are fitted on the outside of the rotating shaft 13, and the multiple spiral blades 15 are respectively located inside the feed box 10 and the drying box 11; one end of the connecting rod 16 is connected to the outer wall of the rotating shaft 13, and the connecting rod 16 is located above the multiple spiral blades 15; the mounting plate 17 is L-shaped, and the mounting plate 17 is connected to the other end of the connecting rod 16; the stirring shaft 18 is connected to the bottom of the mounting plate 17; the annular pipe 19 is located inside the drying box 11, the annular pipe 19 is installed on the top of the drying box 11, the annular pipe 19 is wrapped around the outside of the rotating shaft 13, and the annular pipe 19 is connected to a water source; multiple spray heads 20 are installed on the annular pipe 19; the discharge port 21 is located at the bottom of the drying box 11, and the discharge port 21 is located outside the feed box 10; the feed inlet 22 is located at the top of the feed box 10, and the feed inlet 22 is located outside the drying box 11.
[0028] By installing the drying chamber 11 on top of the feeding chamber 10, setting the feeding hole 14 on top of the feeding chamber 10, and connecting the feeding hole 14 to the drying chamber 11, the feeding chamber 10 supports the drying chamber 11, thereby achieving communication between the feeding chamber 10 and the drying chamber 11. By passing the rotating shaft 13 through the drying chamber 11 and the feeding chamber 10 in sequence, the rotating shaft 13 is rotatably connected to both the drying chamber 11 and the feeding chamber 10, and the feeding hole 14 is arranged around the outside of the rotating shaft 13, so that the drying chamber 11 and the feeding chamber 10 cooperate to support the rotating shaft 13, thereby enabling the rotating shaft 13 to rotate within the feeding hole 14. By mounting multiple spiral blades 15 on the outside of the rotating shaft 13 and positioning them inside the feed box 10 and drying chamber 11 respectively, the rotating shaft 13 drives the spiral blades 15 to rotate when the shaft 13 is rotated. This allows the spiral blades 15 to move the material placed in the feed box 10 upwards, thus enabling the material to enter the drying chamber 11. By installing a heating mechanism 12 on the outside of the drying chamber 11 and connecting its output end to the drying chamber 11, the heating mechanism 12 injects hot air into the drying chamber 11, thereby drying the material inside. By connecting one end of a connecting rod 16 to the outer wall of the rotating shaft 13 and connecting an L-shaped mounting plate 17 to the other end of the connecting rod 16, the rotating shaft 13 drives the connecting rod 16 to rotate the mounting plate 17. By connecting a stirring shaft 18 to the bottom of the mounting plate 17, the mounting plate 17 drives the stirring shaft 18 to rotate, thus enabling the stirring shaft 18 to stir the material. By installing an annular pipe 19 on the top of the drying chamber 11, installing multiple spray heads 20 on the annular pipe 19, and connecting the annular pipe 19 to a water source, water from the water source can flow into the annular pipe 19, thereby allowing water to flow out from the spray heads 20 and extinguishing the fire in the material inside the drying chamber 11. By setting the discharge port 21 at the bottom of the drying chamber 11 and placing it outside the feed box 10, the dried material inside the drying chamber 11 can flow out through the discharge port 21, thus collecting the material. By setting the feed port 22 at the top of the feed box 10 and placing it outside the drying chamber 11, the material can enter the feed box 10 through the feed port 22.
[0029] When using the product, first, put the material into the feed inlet 22, so that the material enters the feed box 10; then, rotate the rotating shaft 13, so that the rotating shaft 13 drives the spiral blade 15 to rotate, so that the spiral blade 15 carries the material upward, and then the material enters the drying box 11; at the same time, start the heating mechanism 12, so that the heating mechanism 12 injects hot air into the drying box 11, thereby drying the material in the drying box 11; when the rotating shaft 13 rotates, the rotating shaft 13 will drive the stirring shaft 18 to rotate through the mounting plate 17, so that the stirring shaft 18 stirs the material, thereby improving the drying efficiency of the material; after the material is dried, open the discharge port 21, so that the material can be discharged through the discharge port 21; if the temperature inside the dryer is too high and causes the material to burn, turn on the water source, so that the water in the water source enters the annular pipe 19, and the water can be sprayed out through the spray head 20, thereby extinguishing the fire of the burning material.
[0030] With the above structure, by connecting the two ends of the connecting rod 16 to the rotating shaft 13 and the mounting plate 17 respectively, and connecting the stirring shaft 18 to the bottom of the mounting plate 17, when the rotating shaft 13 rotates, the rotating shaft 13 will drive the stirring shaft 18 to rotate through the connecting rod 16 and the mounting plate 17, thereby enabling the stirring shaft 18 to stir the material. This not only improves the drying effect of the material, but also prevents the material from accumulating at the discharge port 21, thus avoiding the situation where the material burns due to excessive temperature inside the drying chamber 11 and the material accumulating at the discharge port 21, thereby improving the fire safety of the product. At the same time, by installing the annular pipe 19 on the top of the drying chamber 11, connecting the annular pipe 19 to a water source, and installing multiple spray heads 20 on the annular pipe 19, even if the material burns, water from the water source can enter the annular pipe 19 and be sprayed out through the spray heads 20, thereby extinguishing the burning material and further improving the fire safety of the product.
[0031] In embodiments of this utility model, such as Figures 1 to 4 As shown, the fire-fighting device of the dryer also includes: a first conveying cylinder 23 and a second conveying cylinder 24; the first conveying cylinder 23 is a hollow cavity with openings at both ends, the first conveying cylinder 23 is located inside the feed box 10, the first conveying cylinder 23 is wound around the outside of the spiral blade 15, and the first conveying cylinder 23 is connected to the top of the feed box 10; the second conveying cylinder 24 is a hollow cavity with openings at both ends, the second conveying cylinder 24 is located inside the drying box 11, the second conveying cylinder 24 is wound around the outside of the spiral blade 15, and the second conveying cylinder 24 is connected to the bottom of the drying box 11.
[0032] By placing the first conveying cylinder 23 inside the feeding box 10 and connecting it to the top of the feeding box 10, the feeding box 10 supports the first conveying cylinder 23, allowing the spiral blades 15 to rotate within the first conveying cylinder 23. This enables the material to move upwards along the inner wall of the first conveying cylinder 23, ensuring that the material can enter the drying chamber 11. By placing the second conveying cylinder 24 inside the drying chamber 11 and connecting it to the bottom of the drying chamber 11, the drying chamber 11 supports the second conveying cylinder 24, allowing the spiral blades 15 to rotate within the second conveying cylinder 24. This enables the material to move upwards along the inner wall of the second conveying cylinder 24 and flow out from the top of the second conveying cylinder 24, preventing material accumulation at the bottom of the drying chamber 11 and improving the drying effect.
[0033] In embodiments of this utility model, such as Figures 1 to 4 As shown, the fire-fighting device for the dryer also includes: a support base 25, a slide groove 32, and a slider 26; the support base 25 is annular and is installed on the inner wall of the drying chamber 11, and is arranged around the outer side of the rotating shaft 13; the slide groove 32 is annular and is provided on the inner wall of the support base 25; the slider 26 is connected to the mounting plate 17 and is embedded in the slide groove 32; wherein, the width of the slider 26 is greater than the width of the mounting plate 17.
[0034] By installing an annular support base 25 on the inner wall of the drying chamber 11 and setting an annular groove 32 on the inner wall of the support base 25, the drying chamber 11 supports the support base 25, thereby improving the stability of the support base 25. By connecting the slider 26 to the mounting plate 17 and embedding the slider 26 into the groove 32, the slider 26 and the mounting plate 17 can rotate synchronously, thereby enabling the slider 26 to move within the groove 32. This allows the support base 25 to support the slider 26 and the mounting plate 17, thereby improving the stability of the rotation of the mounting plate 17 and the stirring shaft 18.
[0035] In embodiments of this utility model, such as Figures 1 to 4 As shown, the fire-fighting device for the dryer also includes: a limiting plate 27; the limiting plate 27 is annular, and two limiting plates 27 are installed on the inner wall of the support base 25, and the two limiting plates 27 are located on both sides of the mounting plate 17; wherein, the distance between the two limiting plates 27 is less than the width of the slider 26.
[0036] By installing two limiting plates 27 on the inner wall of the support base 25 and placing the two limiting plates 27 on both sides of the mounting plate 17, the support base 25 supports the two limiting plates 27, thereby limiting the slider 26 to prevent the slider 26 from moving out of the groove 32, thus improving the user experience of the product.
[0037] In embodiments of this utility model, such as Figures 1 to 4 As shown, the fire-fighting device for the dryer also includes: a motor frame 28 and a motor 29; the motor frame 28 is installed on the top of the drying chamber 11; the motor 29 is provided with an output shaft, the motor 29 is installed on the motor frame 28, and the output shaft of the motor 29 is connected to the rotating shaft 13.
[0038] By mounting the motor frame 28 on the top of the drying chamber 11 and mounting the motor 29 on the motor frame 28, the motor frame 28 supports the motor 29, thereby improving the stability of the motor 29; by connecting the output shaft of the motor 29 to the rotating shaft 13, the motor 29 can drive the rotating shaft 13 to rotate, thereby providing power for rotating the rotating shaft 13.
[0039] In embodiments of this utility model, such as Figures 1 to 4 As shown, the fire-fighting device of the dryer also includes: a feed hopper 30 and a guide surface 31; the feed hopper 30 is a hollow cavity with openings at both the top and bottom, the cross-section of the feed hopper 30 is trapezoidal, and the feed hopper 30 is connected to the feed inlet 22; the guide surface 31 is inclined, the guide surface 31 is set at the bottom of the feed box 10, and the guide surface 31 is located on one side of the rotating shaft 13; wherein, the guide surface 31 is located below the feed inlet 22.
[0040] By connecting the trapezoidal cross-section feed hopper 30 to the feed inlet 22, the feeding area of the feed inlet 22 is increased, thereby reducing the difficulty of material entering the feeding box and improving the user experience. By setting the inclined guide surface 31 at the bottom of the feeding box 10, so that the guide surface 31 is below the feed inlet 22 and on one side of the rotating shaft 13, the material entering the feeding box 10 through the feed inlet 22 can move along the guide surface 31 to the rotating shaft 13, thereby ensuring that the spiral blades 15 drive the material upward, thus improving the user experience.
[0041] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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 of this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0042] In the description of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A dryer fire extinguishing apparatus, characterized in that, The fire-fighting device for the dryer includes: The feed box is a hollow cavity; A drying oven, wherein the drying oven is a hollow cavity, the drying oven is installed on top of the feeding box, and the drying oven and the feeding box are arranged alternately; A heating mechanism is installed on the outside of the drying chamber, and the output end of the heating mechanism is connected to the drying chamber. A rotating shaft passes sequentially through the drying chamber and the feeding chamber, and is rotatably connected to both the drying chamber and the feeding chamber. A feeding hole is provided at the top of the feeding box, the feeding hole is connected to the drying box, and the feeding hole is arranged around the outside of the rotating shaft; Spiral blades, multiple spiral blades are mounted on the outside of the rotating shaft, and multiple spiral blades are respectively located in the feed box and the drying box; A connecting rod, one end of which is connected to the outer wall of the rotating shaft, and the connecting rod is located above the plurality of helical blades; The mounting plate is L-shaped and is connected to the other end of the connecting rod. A stirring shaft is connected to the bottom of the mounting plate; A ring-shaped pipe is located inside the drying chamber, installed on the top of the drying chamber, and wrapped around the outside of the rotating shaft. The ring-shaped pipe is connected to a water source. Spray heads, and multiple spray heads are installed on the annular pipe; The discharge port is located at the bottom of the drying chamber and is situated outside the feed chamber. The feed inlet is located at the top of the feed box and on the outside of the drying box.
2. The fire-fighting device for a dryer according to claim 1, characterized in that, The fire-fighting device for the dryer also includes: The first feeding cylinder is a hollow cavity with openings at both ends. The first feeding cylinder is located inside the feed box. The first feeding cylinder is arranged around the outside of the spiral blades and is connected to the top of the feed box. The second feeding cylinder is a hollow cavity with openings at both ends. The second feeding cylinder is located inside the drying chamber and is wound around the outside of the spiral blades. The second feeding cylinder is connected to the bottom of the drying chamber.
3. The fire-fighting device for a dryer according to claim 2, characterized in that, The fire-fighting device for the dryer also includes: A support base, the support base being annular, the support base being mounted on the inner wall of the drying oven, and the support base being arranged around the outer side of the rotating shaft; A sliding groove, the sliding groove being annular, is disposed on the inner wall of the support base; A slider, which is connected to the mounting plate and is embedded in the groove; The width of the slider is greater than the width of the mounting plate.
4. A fire-fighting device for a dryer according to claim 3, characterized in that, The fire-fighting device for the dryer also includes: The limiting plate is ring-shaped, and two limiting plates are installed on the inner wall of the support base, with the two limiting plates located on both sides of the mounting plate; The distance between the two limiting plates is less than the width of the slider.
5. A fire-fighting device for a dryer according to claim 1, characterized in that, The fire-fighting device for the dryer also includes: A motor frame, which is mounted on top of the drying oven; The motor has an output shaft, is mounted on the motor frame, and the output shaft of the motor is connected to the rotating shaft.
6. A fire-fighting device for a dryer according to claim 5, characterized in that, The fire-fighting device for the dryer also includes: The feeding hopper is a hollow cavity with openings at both the top and bottom. The cross-section of the feeding hopper is trapezoidal, and the feeding hopper is connected to the feeding port. A guide surface, which is inclined, is disposed at the bottom of the feed box and is located on one side of the rotating shaft; The guide surface is located below the feed inlet.