A powder feeding device for the production and processing of gluten-free bamboo shoot noodles

Abstract

This invention discloses a powder feeding device for the production and processing of gluten-free bamboo shoot noodles, relating to the field of feeding machine technology. It includes a feeding hopper with a feeding port on its front side, a conical bottom at the bottom, and an air extraction cylinder structure fixed to the top, which communicates with the internal space of the feeding hopper. This invention utilizes a guide plate that slopes inwards and downwards from the feeding port side towards the conical bottom within the feeding hopper. This prevents the gluten-free bamboo shoot noodle powder from directly impacting the conical bottom upon entering the hopper; instead, it falls onto the guide plate and slides along it. The stepped inclined ribs at the top of the guide plate buffer, disperse, and decelerate the falling powder. The guide hole allows the powder to disperse and fall to the conical bottom during the sliding process, thereby reducing the risk of localized accumulation and blockage caused by concentrated powder falling to the bottom of the cone.

Description

Technical Field

[0001] This invention relates to the field of feeding machine technology, and in particular to a powder feeding device based on the production and processing of gluten-free bamboo shoot noodles. Background Technology

[0002] In the production process of gluten-free bamboo shoot noodles, bamboo shoot powder, rice flour, starch powder and auxiliary powders are usually put into subsequent mixing, humidification and forming equipment. Since bamboo shoot powder contains a certain amount of short fiber and flaky fiber debris, and rice flour and starch powder are prone to forming soft lumps after being moistened, problems such as instantaneous concentrated material drop, dust escape, local accumulation, cone bottom blockage and discontinuous subsequent conveying are likely to occur when manually opening bags and feeding the powder.

[0003] Existing dust-free feeding stations typically achieve manual feeding and dust extraction through a feeding hopper, a top extraction cylinder, a filter element, and a lower cone. After entering through the feeding port, the powder mostly falls directly into the cone under gravity. Although this can extract some floating dust in the feeding hopper, it is insufficient in dealing with problems such as instantaneous dust generated when the powder hits the bottom structure after falling into the hopper, material blockage caused by bamboo shoot fiber clumps and large lumps entering the bottom of the cone, and powder escaping backward from the feeding port. Especially in the scenario of feeding gluten-free bamboo shoot flour, relying solely on top extraction cannot meet the continuous control requirements of preventing dust escape from the feeding port, dispersing the falling powder, and preventing blockage at the bottom of the cone. Solving these problems is urgent. Summary of the Invention

[0004] The purpose of this invention is to provide a powder feeding device based on the production and processing of gluten-free bamboo shoot noodles, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A powder feeding device based on the production and processing of gluten-free bamboo shoot noodles includes a feeding hopper, the feeding hopper having a feeding port on the front side, a conical bottom, and an air extraction cylinder structure fixed on the top, the air extraction cylinder structure being connected to the internal space of the feeding hopper.

[0007] Inside the feeding hopper, between the feeding port and the bottom of the cone, a guide plate is provided. The guide plate is arranged obliquely downward from the side near the feeding port to the side near the bottom of the cone.

[0008] The top of the guide plate is provided with a stepped inclined rib, the top of the stepped inclined rib forms a stepped inclined surface, and the guide plate is provided with a plurality of guide holes, which penetrate the guide plate and are used to disperse and fall to the bottom of the cone as the input powder slides along the guide plate.

[0009] Above the material guide plate is an upper inclined dust collection guide plate, which is located inside the feeding hopper. An impact dust guiding space is formed between the upper inclined dust collection guide plate and the material guide plate. The upper inclined dust collection guide plate is provided with a through groove, and one end of its lower surface is provided with a lower end folded edge. The lower end folded edge is bent toward the through groove and is used to guide the dust-laden airflow above the material guide plate to the through groove.

[0010] Preferably, a feeding cover is provided at the feeding port, the feeding cover is hinged to the upper front side of the feeding hopper, a material receiving platform is provided below the feeding port, the material receiving platform is fixedly connected to the front side of the feeding hopper, and the bottom of the cone is located below the guide plate and is opposite to the lower end area of ​​the guide plate.

[0011] Preferably, the air extraction cylinder structure includes a filter element and an air extraction pipe. The filter element is disposed inside the air extraction cylinder structure, and the air extraction pipe is connected to the side of the air extraction cylinder structure. The filter element is located on the airflow path between the internal space of the feeding hopper and the air extraction pipe.

[0012] Preferably, there are multiple stepped inclined ribs, which are spaced apart along the downward inclination direction of the guide plate. The top of each stepped inclined rib is provided with a stepped inclined surface that slopes downward toward the bottom of the cone. Multiple guide holes are provided between adjacent stepped inclined ribs and spaced apart along the width direction of the guide plate.

[0013] Preferably, the lower end of the guide plate is provided with a lower end intercepting guide structure. The lower end intercepting guide structure is located at one end of the guide plate near the bottom of the cone. The lower end intercepting guide structure includes a plurality of intercepting grids arranged at intervals. An end discharge gap is formed between adjacent intercepting grids. The end discharge gap is arranged opposite to the upper opening at the bottom of the cone.

[0014] Preferably, the lower end of the guide plate is provided with a lower end limiting structure, which is connected to the side of the lower end intercepting guide structure. The lower end limiting structure is used to restrict long fiber clusters and large clumps blocked by the lower end intercepting guide structure from leaving the guide plate along the lower end of the guide plate.

[0015] Preferably, the guide plate is provided with side baffle structures on both sides, the side baffle structures extend along the downward inclination direction of the guide plate, and the end of the guide plate near the feeding port is provided with a flip connection structure, the flip connection structure is rotatably connected to the inner wall of the feeding bin, so that the guide plate can flip relative to the feeding bin.

[0016] The feeding hopper is equipped with an elastic floating support assembly located below the lower end of the guide plate. The elastic floating support assembly includes a fixed structure, an elastic support member, and a support plate. The fixed structure is fixedly connected to the inner wall of the feeding hopper and located below the lowest point of the guide plate. The fixed structure has a receiving cavity, and the elastic support member is disposed in the receiving cavity. The bottom end of the elastic support member is connected to the fixed structure, and the support plate is fixedly installed on the top end of the elastic support member. When the guide plate is in the feeding working position, the upper surface of the support plate abuts against the lower surface of the guide plate.

[0017] Preferably, the feeding port is provided with a transverse air guide pipe, which extends along the width direction of the feeding port. The two ends of the transverse air guide pipe are respectively hinged to the bottom end of the telescopic support rod, and the top end of the telescopic support rod is hinged to the top end of the inner wall of the feeding port, so that the transverse air guide pipe is suspended inside the feeding port. The transverse air guide pipe is provided with an air blowing slit facing the inside of the feeding hopper, and the air blowing slit is used to form an inward airflow at the feeding port.

[0018] Preferably, the upper inclined dust-collecting guide plate has an upper dust-blocking edge at one end near the feeding port on its upper surface. The upper inclined dust-collecting guide plate has a guide groove and a strip-shaped rib. The guide groove is located on the upper surface of the upper inclined dust-collecting guide plate and extends along the inclined direction of the upper inclined dust-collecting guide plate. The strip-shaped rib is located on the lower surface of the upper inclined dust-collecting guide plate and extends along the direction of dust-laden airflow.

[0019] Preferably, the air blowing slit extends along the length of the transverse air guide pipe, and the air outlet direction of the air blowing slit is inclined from the outside of the feeding port toward the inside of the feeding hopper, and points toward the stepped inclined rib plate of the guide plate, so that the transverse air guide pipe, the guide plate, the upper inclined dust collection guide plate and the exhaust cylinder structure together form a feeding guide path in which the feeding port blows inward, the powder disperses and falls, and the dust-laden airflow is drawn upward.

[0020] The technical effects and advantages of this invention are as follows:

[0021] 1. This invention provides a guide plate that slopes inward from the feeding port to the bottom of the cone within the feeding hopper. This prevents the gluten-free bamboo shoot flour from directly impacting the bottom of the cone upon entering the feeding hopper. Instead, the flour falls onto the guide plate and slides along it. The stepped inclined ribs at the top of the guide plate buffer, disperse, and decelerate the falling flour. The guide holes allow the normal flour to fall to the bottom of the cone during the sliding process, thereby reducing the risk of local accumulation and blockage caused by the concentrated falling of flour to the bottom of the cone.

[0022] 2. This invention, by setting a low-end intercepting and guiding structure at the low end of the guide plate, and cooperating with a low-end limiting structure, a side blocking structure, a flipping connection structure, and an elastic floating support component, enables the guide plate to not only prevent blockage and interception of bamboo shoot powder fiber clumps, large clumps, and packaging debris, but also to generate buffer floating under the impact of feeding, so as to reduce dust from powder impact and promote the continued falling of powder. At the same time, the guide plate can flip relative to the feeding bin, which makes it easy to clean the long fiber clumps and large clumps trapped on the guide plate after feeding, and avoids the long-term accumulation of trapped materials affecting the next feeding.

[0023] 3. This invention, by setting an upper inclined dust-collecting guide plate above the guide plate, confines the dust generated when the powder impacts the guide plate within the impact dust-collecting guide space. Under the combined action of the lower folded edge, through groove, guide groove, and strip-shaped ribs, the dust is guided to the exhaust cylinder structure. The transverse air guide pipe forms an inward blowing airflow at the feeding port, making it difficult for dust and light powder to escape outward at the feeding port. This forms a continuous feeding guide path with inward blowing from the feeding port, material dispersion by the guide plate, dust guidance by the upper inclined dust-collecting guide plate, and upward suction by the exhaust cylinder structure, improving the low dust and stability of the feeding process. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 This is a cross-sectional view of the overall structure of the present invention.

[0026] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0027] Figure 4 This is a schematic diagram of the internal powder movement trajectory of the overall structure of the present invention.

[0028] Figure 5 This is a schematic diagram of the guide plate structure of the present invention. Figure 1 .

[0029] Figure 6 This is a schematic diagram of the guide plate structure of the present invention. Figure 2 .

[0030] Figure 7 This is a schematic diagram of the elastic floating support component structure of the present invention.

[0031] Figure 8 This is a schematic diagram of the internal structure of the feeding hopper of the present invention.

[0032] Figure 9 This is a schematic diagram of the upper inclined dust collection guide plate structure of the present invention. Figure 1 .

[0033] Figure 10This is a schematic diagram of the upper inclined dust collection guide plate structure of the present invention. Figure 2 .

[0034] In the diagram: 1. Feeding hopper; 11. Feeding port; 111. Feeding cover plate; 12. Conical bottom; 13. Material receiving platform; 2. Air extraction cylinder structure; 21. Filter element; 22. Air extraction pipe; 3. Guide plate; 31. Stepped inclined rib plate; 32. Guide hole; 33. Low-end intercepting guide structure; 34. Low-end limiting structure; 35. Side baffle structure; 36. Flip-over connection structure; 37. Elastic floating support assembly; 371. Fixed structure; 372. Elastic support component; 373. Support plate; 4. Upper inclined dust collection guide plate; 41. Upper dust-blocking edge; 42. Through groove; 43. Lower folded edge; 44. Guide groove; 45. Strip-shaped rib; 5. Horizontal air guide pipe; 51. Telescopic support rod. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described in conjunction with the accompanying drawings and embodiments.

[0036] like Figures 1 to 10 As shown, the present invention provides a powder feeding device based on the production and processing of gluten-free bamboo shoot flour. In essence, it is a powder feeding device used to solve the problems of obvious dust generation due to powder impact, easy entry of bamboo shoot flour fiber clumps and large lumps into the bottom of the cone, and easy escape of dust and powder from the feeding port in the process of feeding gluten-free bamboo shoot flour in existing dust-free feeding stations.

[0037] In terms of specific structural installation, the structural body can be constructed according to the inventive concept of this embodiment. In this embodiment, no special limitations are imposed.

[0038] In this embodiment, a powder feeding device based on gluten-free bamboo shoot flour production and processing includes a feeding hopper 1. The feeding hopper 1 can be formed by welding, bending and screwing together food-grade stainless steel plates to form a box-type feeding structure. The front side of the feeding hopper 1 is provided with a feeding port 11, which is used for operators to put bamboo shoot flour, rice flour and starch powder into the feeding hopper 1. The bottom of the feeding hopper 1 is provided with a conical bottom 12. The conical bottom 12 is preferably a conical material collection structure with a larger top and a smaller bottom, and is used to receive the powder dispersed and falling by the guide plate 3. The top of the feeding hopper 1 is fixedly provided with an exhaust cylinder structure 2. The exhaust cylinder structure 2 is located on the top of the feeding hopper 1 and is connected to the internal space of the feeding hopper 1, so that the inside of the feeding hopper 1 forms an exhaust path for the upward flow of dust-laden air.

[0039] A feeding cover plate 111 is provided at the feeding port 11. The feeding cover plate 111 is hinged to the upper front side of the feeding bin 1. When the feeding cover plate 111 is opened, the feeding port 11 can be exposed for manual feeding. When closed, it can cover the feeding port 11 to reduce dust leakage. A receiving platform 13 is provided below the feeding port 11. The receiving platform 13 is fixedly connected to the front side of the feeding bin 1. The receiving platform 13 can adopt a plate support structure and is used to temporarily support the powder bag and receive a small amount of scattered powder. The cone bottom 12 is located below the guide plate 3 and is set opposite to the lower end area of ​​the guide plate 3, so that the powder introduced by the guide plate 3 and falling through the guide hole 32 can enter the cone bottom 12.

[0040] The air extraction cylinder structure 2 includes a filter element 21 and an air extraction pipe 22. The filter element 21 is disposed inside the air extraction cylinder structure 2, and the air extraction pipe 22 is connected to the side of the air extraction cylinder structure 2. The air extraction pipe 22 can be connected to an external negative pressure source, an exhaust fan, or a centralized dust removal pipeline. The filter element 21 is located on the airflow path between the internal space of the feeding hopper 1 and the air extraction pipe 22, so that the dust-laden airflow entering the air extraction cylinder structure 2 is filtered by the filter element 21 before entering the air extraction pipe 22. The filter element 21 preferably adopts a detachable filter cartridge structure for regular cleaning and replacement.

[0041] The feeding hopper 1 is equipped with a guide plate 3, which is located between the feeding port 11 and the cone bottom 12. The guide plate 3 is inclined inward and downward from the side closer to the feeding port 11 to the side closer to the cone bottom 12. The guide plate 3 is used to receive the powder entering from the feeding port 11 and to allow the powder to slide along its plate surface into the feeding hopper 1. The guide plate 3 can be made of stainless steel plate. An assembly gap is maintained between its plate surface and the inner wall of the feeding hopper 1 for flipping and floating. The side baffle structure 35 restricts the powder from escaping from both sides of the guide plate 3.

[0042] The top of the guide plate 3 is provided with a stepped inclined rib plate 31. The stepped inclined rib plate 31 is fixedly set on the upper surface of the guide plate 3 and forms a raised rib plate structure. The top of the stepped inclined rib plate 31 forms a stepped inclined surface. The stepped inclined surface is used to impede, disperse and guide the powder when it slides down the guide plate 3. Multiple stepped inclined rib plates 31 are spaced apart along the downward inclination direction of the guide plate 3. The top of each stepped inclined rib plate 31 is provided with a stepped inclined surface that slopes downward toward the bottom of the cone 12, so that the powder can slide in layers and reduce concentrated impact when it passes through adjacent stepped inclined rib plates 31. At the same time, the fibers in the powder are slowed down and temporarily intercepted when passing through the stepped inclined surface.

[0043] The guide plate 3 is provided with multiple guide holes 32. The guide holes 32 penetrate the guide plate 3 and are used to disperse and fall to the bottom of the cone 12 during the sliding process of the input powder along the guide plate 3. The multiple guide holes 32 are arranged between adjacent stepped inclined ribs 31 and are spaced apart along the width direction of the guide plate 3. The guide holes 32 are preferably strip-shaped holes. The function of the guide holes 32 is to form a dispersion and falling channel during the powder feeding process, so that the normal powder gradually falls down during the sliding process on the guide plate 3, while long fiber clumps, large lumps and packaging debris are temporarily blocked by the plate surface and the lower end intercepting guide structure 33 of the guide plate 3.

[0044] The guide plate 3 has a low-end intercepting guide structure 33 at its lower end. The low-end intercepting guide structure 33 is located at the end of the guide plate 3 near the cone bottom 12. The low-end intercepting guide structure 33 includes multiple intercepting grids arranged at intervals. An end drop gap is formed between adjacent intercepting grids. The end drop gap is set opposite to the upper opening of the cone bottom 12, so that normal powder sliding along the guide plate 3 to the lower end can enter the cone bottom 12 through the end drop gap. At the same time, long fiber clumps and larger powder clumps are blocked by the intercepting grids to prevent them from directly entering the cone bottom 12 and subsequent conveying path.

[0045] The lower side of the guide plate 3 is provided with a lower limiting structure 34, which is connected to the side of the lower intercepting guide structure 33. The lower limiting structure 34 adopts a folded edge structure to restrict long fiber clumps and large clumps blocked by the lower intercepting guide structure 33 from leaving the guide plate 3 along the lower end of the guide plate 3. After the lower limiting structure 34 and the lower intercepting guide structure 33 cooperate, they can form an anti-blocking interception area at the lower end of the guide plate 3, so that the intercepted material can be turned over and cleaned after feeding.

[0046] Both sides of the guide plate 3 are provided with side baffle structures 35. The side baffle structures 35 extend along the downward inclination direction of the guide plate 3. The side baffle structures 35 can be formed by bending the two sides of the guide plate 3 upward. The side baffle structures 35 are used to limit the powder from overflowing to both sides when sliding on the guide plate 3 and to enhance the overall rigidity of the guide plate 3. The end of the guide plate 3 near the feeding port 11 is provided with a flip connection structure 36. The flip connection structure 36 is rotatably connected to the inner wall of the feeding bin 1, so that the guide plate 3 can be flipped relative to the feeding bin 1, so that the guide plate 3 can be flipped out after feeding and the intercepted long fiber clumps, large clumps and packaging debris can be cleaned up.

[0047] The feeding hopper 1 is equipped with an elastic floating support assembly 37, which is located below the lower end of the guide plate 3. The elastic floating support assembly 37 includes a fixed structure 371, an elastic support member 372, and a support plate 373. The fixed structure 371 is fixedly connected to the inner wall of the feeding hopper 1 and is located below the lowest point of the guide plate 3. The fixed structure 371 has a receiving cavity, and the elastic support member 372 is disposed in the receiving cavity. The bottom end of the elastic support member 372 is connected to the fixed structure 371, and the support plate 373 is fixedly installed on the top end of the elastic support member 372. When the guide plate 3 is in the feeding working position, the upper surface of the support plate 373 abuts against the lower surface of the guide plate 3, so that when the guide plate 3 is impacted by powder, it can generate a small amplitude of floating and rebound under the action of the elastic support member 372, so as to buffer the impact of powder and promote the powder to fall into the bottom of the cone 12 through the guide hole 32.

[0048] Above the guide plate 3, there is an upper inclined dust collection guide plate 4. The upper inclined dust collection guide plate 4 is located inside the feeding bin 1. The upper inclined dust collection guide plate 4 and the guide plate 3 form an impact dust guiding space. The inclined direction of the upper inclined dust collection guide plate 4 is preferably matched with the guiding direction of the guide plate 3, so that the dust splashed after the powder hits the guide plate 3 can be confined in the impact dust guiding space and move upward under the negative pressure of the exhaust cylinder structure 2. The upper inclined dust collection guide plate 4 can be made of stainless steel bent plate structure and connected to the inner wall of the feeding bin 1 through its side.

[0049] The upper inclined dust-collecting guide plate 4 has an upper dust-blocking edge 41 at one end of its upper surface near the feeding port 11. The upper dust-blocking edge 41 is used to block the dust that is thrown back towards the feeding port 11 after the powder hits the guide plate 3. The upper inclined dust-collecting guide plate 4 has a through groove 42 corresponding to the air inlet side of the exhaust cylinder structure 2. The through groove 42 passes through the upper inclined dust-collecting guide plate 4 and is located on the path of the dust-laden airflow towards the exhaust cylinder structure 2, so that the dust-laden airflow in the impact dust-collecting guide space can enter the exhaust cylinder structure 2 through the through groove 42. The lower surface of the upper inclined dust-collecting guide plate 4 has a lower folded edge 43 at one end. The lower folded edge 43 is bent toward the through groove 42 and is used to guide the dust-laden airflow above the guide plate 3 to the through groove 42, so as to reduce the probability of disorderly diffusion of dust in the feeding bin 1.

[0050] The upper inclined dust-collecting guide plate 4 is provided with a guide groove 44 and a strip-shaped rib 45. The guide groove 44 is located on the upper surface of the upper inclined dust-collecting guide plate 4 and extends along the inclined direction of the upper inclined dust-collecting guide plate 4. The guide groove 44 is used to guide the settling dust particles back. The strip-shaped rib 45 is set on the lower surface of the upper inclined dust-collecting guide plate 4 and extends along the direction of the dust-laden airflow. The strip-shaped rib 45 is used to divert and guide the dust-laden airflow in the impact dust-raising guide space, and at the same time improve the strength of the upper inclined dust-collecting guide plate 4, so that the dust-laden airflow can move more stably towards the through groove 42 and the exhaust cylinder structure 2.

[0051] The feeding port 11 is provided with a transverse air guide pipe 5, which extends along the width of the feeding port 11. The two ends of the transverse air guide pipe 5 are respectively hinged to the bottom end of the telescopic support rod 51, and the top end of the telescopic support rod 51 is hinged to the top end of the inner wall of the feeding port 11, so that the transverse air guide pipe 5 is suspended in the feeding port 11. The transverse air guide pipe 5 is provided with an air blowing slit facing the inside of the feeding bin 1. The air blowing slit extends along the length of the transverse air guide pipe 5. The air outlet direction of the air blowing slit is inclined from the outside of the feeding port 11 toward the inside of the feeding bin 1 and points to the stepped inclined rib plate 31 of the guide plate 3, so that an inward airflow is formed at the feeding port 11 to limit the powder and dust from escaping to the outside of the feeding port 11 during the feeding process.

[0052] In summary, when using this device, first open the feeding cover 111 to expose the feeding port 11. Simultaneously, connect the suction cylinder structure 2 to the negative pressure source via the suction pipe 22, creating an upward suction airflow within the feeding chamber 1. The transverse air guide pipe 5, through the air slit, creates an inward blowing airflow at the feeding port 11. The operator feeds the gluten-free bamboo shoot noodle production powder into the feeding chamber 1 through the feeding port 11. Under the action of the inward blowing airflow, the powder enters the feeding chamber 1 and falls into the area of ​​the stepped inclined rib plate 31 of the guide plate 3. Under the action of the elastic floating support component 37, the plate 3 buffers the impact of the powder. The powder slides along the guide plate 3 toward the bottom of the cone 12 and is dispersed into the bottom of the cone 12 through the guide hole 32 and the low-end intercepting guide structure 33. Long fiber clumps and large clumps are temporarily intercepted by the guide plate 3. The dust-laden airflow generated by the powder hitting the guide plate 3 is restricted by the upper inclined dust collection guide plate 4 and guided to the through groove 42 under the action of the lower folded edge 43 and strip rib 45. Then it enters the exhaust cylinder structure 2 and is filtered by the filter element 21. The clean airflow is discharged through the exhaust pipe 22.

[0053] After feeding is completed, the feeding state at the feeding port 11 can be released and the guide plate 3 can be flipped relative to the feeding bin 1 around the flipping connection structure 36, so that the long fiber clumps, large clumps and packaging debris trapped on the guide plate 3 can be exposed. The operator can clean the trapped material at the guide plate 3, the low-end trapping guide structure 33 and the low-end limiting structure 34. After cleaning, the guide plate 3 is reset to the feeding working position, so that the low end of the guide plate 3 abuts against the support plate 373 again, and the feeding cover 111 is closed to wait for the next feeding.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A powder feeding device for the production and processing of gluten-free bamboo shoot noodles, comprising a feeding hopper (1), characterized in that: The feeding hopper (1) has a feeding port (11) on the front side, a cone bottom (12) at the bottom, and a vacuum cylinder structure (2) fixed on the top. The vacuum cylinder structure (2) is connected to the internal space of the feeding hopper (1). Inside the feeding hopper (1), between the feeding port (11) and the bottom of the cone (12), a guide plate (3) is provided. The guide plate (3) is arranged obliquely downward from the side near the feeding port (11) to the side near the bottom of the cone (12). The top of the guide plate (3) is provided with a stepped inclined rib plate (31), the top of the stepped inclined rib plate (31) forms a stepped inclined surface, and the guide plate (3) is provided with a plurality of guide holes (32). The guide holes (32) penetrate the guide plate (3) and are used to disperse the powder material into the bottom of the cone (12) during the sliding process along the guide plate (3). Above the guide plate (3) is an upper inclined dust collection guide plate (4), which is located inside the feeding hopper (1). An impact dust guiding space is formed between the upper inclined dust collection guide plate (4) and the guide plate (3). The upper inclined dust collection guide plate (4) is provided with a through groove (42), and one end of its lower surface is provided with a lower end folded edge (43). The lower end folded edge (43) is bent toward the through groove (42) and used to guide the dust-laden airflow above the guide plate (3) to the through groove (42).

2. The powder feeding device for gluten-free bamboo shoot noodle production and processing according to claim 1, characterized in that: A feeding cover plate (111) is provided at the feeding port (11). The feeding cover plate (111) is hinged to the upper front side of the feeding hopper (1). A material receiving platform (13) is provided below the feeding port (11). The material receiving platform (13) is fixedly connected to the front side of the feeding hopper (1). The cone bottom (12) is located below the guide plate (3) and is opposite to the low end area of ​​the guide plate (3).

3. The powder feeding device for gluten-free bamboo shoot noodle production and processing according to claim 1, characterized in that: The air extraction cylinder structure (2) includes a filter element (21) and an air extraction pipe (22). The filter element (21) is disposed inside the air extraction cylinder structure (2), and the air extraction pipe (22) is connected to the side of the air extraction cylinder structure (2). The filter element (21) is located on the airflow path between the internal space of the feeding bin (1) and the air extraction pipe (22).

4. The powder feeding device for gluten-free bamboo shoot noodle production and processing according to claim 1, characterized in that: The stepped inclined rib plate (31) is provided in multiple ways. The multiple stepped inclined rib plates (31) are spaced apart along the downward inclination direction of the guide plate (3). The top of each stepped inclined rib plate (31) is provided with a stepped inclined surface that slopes downward toward the bottom of the cone (12). The multiple guide holes (32) are provided between adjacent stepped inclined rib plates (31) and spaced apart along the width direction of the guide plate (3).

5. A powder feeding device for the production and processing of gluten-free bamboo shoot noodles according to claim 1, characterized in that: The guide plate (3) has a low-end intercepting guide structure (33) at its lower end. The low-end intercepting guide structure (33) is located at one end of the guide plate (3) near the bottom of the cone (12). The low-end intercepting guide structure (33) includes a plurality of intercepting grids arranged at intervals. An end drop gap is formed between adjacent intercepting grids. The end drop gap is set opposite to the upper opening of the bottom of the cone (12).

6. A powder feeding device for the production and processing of gluten-free bamboo shoot noodles according to claim 5, characterized in that: The lower end of the guide plate (3) is provided with a lower end limiting structure (34), which is connected to the side of the lower end intercepting guide structure (33). The lower end limiting structure (34) is used to restrict long fiber clusters and large clumps blocked by the lower end intercepting guide structure (33) from leaving the guide plate (3) along the lower end of the guide plate (3).

7. A powder feeding device for the production and processing of gluten-free bamboo shoot noodles according to claim 1, characterized in that: The guide plate (3) is provided with side baffle structures (35) on both sides. The side baffle structures (35) extend along the downward direction of the guide plate (3). The guide plate (3) is provided with a flip connection structure (36) at one end near the feeding port (11). The flip connection structure (36) is rotatably connected to the inner wall of the feeding bin (1) so that the guide plate (3) can flip relative to the feeding bin (1). The feeding hopper (1) is provided with an elastic floating support assembly (37). The elastic floating support assembly (37) is located below the lower end of the guide plate (3). The elastic floating support assembly (37) includes a fixed structure (371), an elastic support member (372), and a support plate (373). The fixed structure (371) is fixedly connected to the inner wall of the feeding hopper (1) and located below the lowest landing point of the guide plate (3). The fixed structure (371) is provided with a receiving cavity. The elastic support member (372) is disposed in the receiving cavity. The bottom end of the elastic support member (372) is connected to the fixed structure (371). The support plate (373) is fixedly installed on the top end of the elastic support member (372). When the guide plate (3) is in the feeding working position, the upper surface of the support plate (373) abuts against the lower surface of the guide plate (3).

8. A powder feeding device for the production and processing of gluten-free bamboo shoot noodles according to claim 1, characterized in that: The feeding port (11) is provided with a transverse air guide pipe (5). The transverse air guide pipe (5) extends along the width direction of the feeding port (11). The two ends of the transverse air guide pipe (5) are respectively hinged to the bottom end of the telescopic support rod (51). The top end of the telescopic support rod (51) is hinged to the top end of the inner wall of the feeding port (11) so that the transverse air guide pipe (5) is suspended in the feeding port (11). The transverse air guide pipe (5) is provided with an air blowing slit facing the inside of the feeding bin (1). The air blowing slit is used to form an inward airflow at the feeding port (11).

9. A powder feeding device for the production and processing of gluten-free bamboo shoot noodles according to claim 1, characterized in that: The upper inclined dust-collecting guide plate (4) has an upper dust-blocking edge (41) at one end of its upper surface near the feeding port (11). The upper inclined dust-collecting guide plate (4) has a guide groove (44) and a strip-shaped rib (45). The guide groove (44) is located on the upper surface of the upper inclined dust-collecting guide plate (4) and extends along the inclined direction of the upper inclined dust-collecting guide plate (4). The strip-shaped rib (45) is located on the lower surface of the upper inclined dust-collecting guide plate (4) and extends along the direction of the dust-laden airflow.

10. A powder feeding device for the production and processing of gluten-free bamboo shoot noodles according to claim 8, characterized in that: The air blowing slit extends along the length of the transverse air guide pipe (5). The air outlet direction of the air blowing slit is inclined from the outside of the feeding port (11) toward the inside of the feeding bin (1) and points to the stepped inclined rib plate (31) of the guide plate (3). The transverse air guide pipe (5), the guide plate (3), the upper inclined dust collection guide plate (4) and the exhaust cylinder structure (2) together form a feeding guide path in which the feeding port blows inward, the powder disperses and falls, and the dust-laden airflow is drawn upward.

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