A powder feeding device

Abstract

The utility model discloses a kind of feeding mechanism of powder conveying equipment, it is related to feeding mechanism technical field, including transmission pipe, discharge port, screw rod and motor one, the discharge port is fixedly connected in the lower side of the transmission pipe front end, and with the transmission pipe intercommunication, the screw rod is arranged in the transmission pipe inside, and front and back both ends are rotatably connected with the transmission pipe, and rear end extends out the transmission pipe, the motor one is fixedly connected in the screw rod rear end, and with the transmission pipe rear side surface fixed connection. The utility model is through the cooperation of the use of transmission pipe, discharge port, screw rod, motor one, feed hopper, supporting leg, flow control mechanism, overturning anti-blocking subassembly, vibration wall mechanism, belt pulley one, extruding wheel and rubber boss, realize controllable powder falling speed and feed amount, prevent powder bridging blockage, still can shake and fall feed hopper inner wall attached powder, the effect of improving screw conveyor feeding stability and conveying efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of feeding mechanisms, specifically a feeding mechanism for a powder conveying device. Background Technology

[0002] In the industrial production field, powder conveying equipment is the core equipment for realizing the automated and continuous transfer of powder materials. It is widely used in many industries such as chemical, food, pharmaceutical, and building materials. Its main function is to transport granular, powdery and other loose materials from storage devices to subsequent processing equipment or designated workstations, which greatly improves production efficiency and reduces the labor intensity and material loss caused by manual operation. It is an indispensable key component in modern production lines. Among various powder conveying equipment, screw conveyors have become one of the most widely used equipment types due to their advantages of compact structure, stable conveying and good sealing performance. The core working principle of screw conveyors is to drive the screw rod inside the transmission pipe to rotate through the motor. The friction and thrust between the screw blades and the powder material are used to transport the material forward along the direction of the transmission pipe and finally discharge it from the outlet at the front end. The feed hopper, as an important feeding component of the screw conveyor, directly undertakes the key role of guiding external powder materials into the transmission pipe. Its feeding stability and smoothness directly determine the operating efficiency of the entire conveying system. However, in practical applications, the feed hoppers of existing screw conveyors are difficult to control precisely in terms of powder falling speed and feed rate. They mostly rely on gravity to fall naturally, which can easily lead to blockage of the transmission pipe due to excessive feeding, affecting production continuity. At the same time, the powder has poor mobility in the hopper and is prone to mutual compression, forming bridges or agglomerates, resulting in poor feeding and requiring shutdown for cleaning. Furthermore, the powder is easily affected by humidity or electrostatic adsorption and adheres to the inner wall of the hopper. Long-term accumulation without treatment not only reduces the effective volume but may also lead to material deterioration and contamination, further affecting the mobility of the falling powder and seriously restricting the efficiency and stability of the conveying system. Utility Model Content

[0003] To address the problems mentioned in the background art, the purpose of this utility model is to provide a feeding mechanism for a powder conveying device. This mechanism controls the powder's falling speed and feed rate, prevents powder bridging and blockage, and shakes off powder adhering to the inner wall of the hopper, thus improving the feeding stability and conveying efficiency of the screw conveyor. It improves or solves, to a certain extent, the problems of existing screw conveyors where the powder's falling speed and feed rate are difficult to control precisely in practical applications, relying heavily on gravity for natural falling. This often leads to congestion in the transmission pipe due to excessively rapid feeding, affecting production continuity. Furthermore, the powder's poor mobility within the hopper makes it prone to bridging or agglomeration, resulting in poor feeding and requiring machine shutdown for cleaning. Additionally, the powder easily adheres to the inner wall of the hopper due to humidity or electrostatic adsorption. Long-term accumulation without treatment not only reduces the effective volume but may also lead to material deterioration and contamination, further affecting the powder's falling mobility and severely restricting the efficiency and stability of the conveying system.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a feeding mechanism for a powder conveying device, comprising a conveying pipe, a discharge port, a screw rod, and a motor. The discharge port is fixedly connected to the lower front end of the conveying pipe and communicates with it. The screw rod is disposed inside the conveying pipe, with both its front and rear ends rotatably connected to the conveying pipe, and its rear end extending out of the conveying pipe. The motor is fixedly connected to the rear end of the screw rod and is fixedly connected to the rear surface of the conveying pipe. A feed hopper is fixedly connected to the upper rear end of the conveying pipe, and the feed hopper communicates with the conveying pipe. Support feet are fixedly connected to the four corners of the lower side of the feed hopper. The feed hopper is a cone-shaped hopper that is wider at the top and narrower at the bottom. A flow control mechanism is provided at the lower end of the feed hopper. A tilting anti-blocking component is provided in the middle of the feed hopper. Vibration mechanisms are provided on the left and right sides of the feed hopper.

[0005] In a preferred embodiment of this invention, the flow control mechanism includes a rotating rod, a second motor, a rubber cylinder, and a material receiving trough. The rotating rod is located at the lower end of the feed hopper, extending out of the feed hopper at both its front and rear ends and rotatably connected to it. The second motor is fixedly connected to the rear end of the rotating rod and to the lower end of the rear surface of the feed hopper. The rubber cylinder is sleeved on the surface of the rotating rod and fixedly connected to it. There are two material receiving troughs, which are respectively located on the upper and lower sides of the rubber cylinder. The material receiving troughs correspond to the outlet positions at the lower end of the feed hopper.

[0006] As a preferred embodiment of this invention, a pulley is fixedly connected to the front end of the rotating rod.

[0007] As a preferred embodiment of this utility model, the anti-blocking component includes a shaft, agitator blades, and a second pulley. The shaft is located in the middle of the inside of the feed hopper, and extends out of the feed hopper at both ends and is rotatably connected to the feed hopper. The number of agitator blades is several, and they are evenly sleeved on the surface of the shaft and fixedly connected to the shaft. The second pulley is fixedly connected to the front end of the shaft and is connected to the first pulley via a belt.

[0008] As a preferred embodiment of this invention, a pressing wheel is fitted onto the rear end surface of the shaft, and the pressing wheel is fixedly connected to the shaft.

[0009] In a preferred embodiment of this invention, the vibrating mechanism includes a rotating seat, a clapper, a tension spring, an L-shaped push rod, and an extrusion plate. The rotating seat is fixedly connected to the upper end of the left surface of the feed hopper. The upper end of the clapper is sleeved on the surface of the rotating seat and rotatably connected to it. The shape of the clapper matches the shape of the outer wall of the feed hopper. There are three tension springs, which are evenly fixedly connected to the lower right side surface of the clapper and arranged in a front-to-back position. The right ends of the three tension springs are all fixedly connected to the lower left side surface of the feed hopper. The L-shaped push rod is fixedly connected to the middle of the rear surface of the clapper, and its rear end is bent at a 90-degree angle toward the extrusion wheel. The extrusion plate is fixedly connected to the left rear end of the L-shaped push rod and corresponds to and is adapted to the extrusion wheel.

[0010] As a preferred embodiment of this invention, a plurality of rubber protrusions are uniformly and fixedly connected to the surface of the clapper near the feed hopper, and the rubber protrusions are in contact with the outer wall of the feed hopper.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model addresses the challenges of existing screw conveyors in practical applications. The existing screw conveyor system suffers from difficulties in precisely controlling the powder's falling speed and feed rate, relying heavily on gravity. This often leads to excessively rapid feeding, causing blockages in the conveyor pipe and affecting production continuity. Furthermore, the powder's poor mobility within the hopper makes it prone to bridging or agglomeration, resulting in poor feeding and requiring shutdown for cleaning. Additionally, the powder easily adheres to the hopper's inner wall due to humidity or electrostatic adsorption. Long-term accumulation not only reduces the effective volume but can also lead to material deterioration and contamination, further impacting the powder's movement and severely limiting the efficiency and stability of the conveying system.

[0012] 2. This utility model can regulate the falling speed of powder and the amount of feed by setting a flow control mechanism, so as to avoid the congestion of the transmission pipe caused by feeding too fast or the interruption of material caused by feeding too slow. At the same time, the rubber cylinder can reduce powder adhesion and ensure the stability of feeding.

[0013] 3. By setting up a tumbling anti-blocking component, this utility model can not only break the adsorption and compression state between powder particles through stirring, effectively avoiding powder bridging and blockage, but also simultaneously provide power to the vibrating wall mechanism, realizing functional linkage to improve the overall feeding stability. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the screw conveyor of this utility model; Figure 2 This is a cross-sectional three-dimensional structural diagram of a screw conveyor; Figure 3 This is a cross-sectional three-dimensional structural diagram of the feed hopper; Figure 4 This is a schematic diagram of the cross-sectional plane structure of the feed hopper; Figure 5 This is a schematic diagram of the exploded three-dimensional structure of the vibrating wall mechanism. In the diagram: 1. Transmission pipe; 101. Discharge port; 102. Screw rod; 103. Motor 1; 2. Feed hopper; 21. Support foot; 3. Flow control mechanism; 31. Rotating rod; 32. Motor 2; 33. Rubber cylinder; 34. Feed trough; 4. Tilting anti-blocking component; 41. Shaft; 42. Tilting blade; 43. Belt pulley 2; 5. Vibrating wall mechanism; 51. Rotating seat; 52. Patting plate; 53. Tension spring; 54. L-shaped push rod; 55. Extrusion plate; 6. Belt pulley 1; 7. Extrusion wheel; 8. Rubber protrusion. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0018] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0019] Example 1 Reference Figure 1-5 This is the first embodiment of the present invention, which provides a feeding mechanism for a powder conveying device, including a transmission pipe 1, a discharge port 101, a screw rod 102, and a motor 103. The discharge port 101 is fixedly connected to the lower front end of the transmission pipe 1 and communicates with the transmission pipe 1. The screw rod 102 is disposed inside the transmission pipe 1, and both its front and rear ends are rotatably connected to the transmission pipe 1, with its rear end extending out of the transmission pipe 1. The motor 103 is fixedly connected to the rear end of the screw rod 102 and is fixedly connected to the rear surface of the transmission pipe 1. A feed hopper 2 is fixedly connected to the upper rear end of the transmission pipe 1 and communicates with the transmission pipe 1. Support feet 21 are fixedly connected to the four corners of the lower side of the feed hopper 2. The feed hopper 2 is a cone-shaped hopper that is larger at the top and smaller at the bottom. A flow control mechanism 3 is provided at the lower end of the feed hopper 2. A tilting anti-blocking component 4 is provided at the middle of the feed hopper 2. Vibration mechanisms 5 are provided on the left and right sides of the feed hopper 2.

[0020] Specifically, the feeding mechanism can control the powder falling speed and feeding amount, while effectively avoiding powder bridging and blockage and accumulation on the inner wall of the hopper, significantly improving the feeding stability and conveying efficiency of the screw conveyor.

[0021] Furthermore, motor 103 drives screw rod 102 to prepare for conveying, flow control mechanism 3 realizes quantitative and uniform feeding of powder, anti-blocking component 4 prevents powder bridging, and wall vibration mechanism 5 shakes off powder adhering to the inner wall. All components work together to complete stable feeding and conveying.

[0022] Example 2 In the second embodiment of this utility model, the flow control mechanism 3 includes a rotating rod 31, a second motor 32, a rubber cylinder 33, and a material feeding trough 34. The rotating rod 31 is located inside the lower end of the feeding hopper 2, and both its front and rear ends extend out of the feeding hopper 2 and are rotatably connected to the feeding hopper 2. The second motor 32 is fixedly connected to the rear end of the rotating rod 31 and is fixedly connected to the lower end of the rear surface of the feeding hopper 2. The rubber cylinder 33 is sleeved on the surface of the rotating rod 31 and is fixedly connected to the rotating rod 31. There are two material feeding troughs 34, which are respectively opened on the upper and lower sides of the rubber cylinder 33. The material feeding troughs 34 correspond to the outlet positions at the lower end of the feeding hopper 2. A pulley 6 is fixedly connected to the front end of the rotating rod 31.

[0023] Specifically, by setting the flow control mechanism 3, the falling speed of powder and the amount of feed can be controlled, avoiding the blockage of the transmission pipe 1 caused by excessively fast feeding or the interruption of material supply caused by excessively slow feeding. At the same time, the rubber cylinder 33 can reduce powder adhesion and ensure the stability of feeding.

[0024] Furthermore, the second motor 32 drives the rotating rod 31 to rotate the rubber cylinder 33. When the material receiving groove 34 on the rubber cylinder 33 rotates to connect with the inside of the feed hopper 2, it receives the powder. As the rubber cylinder 33 continues to rotate, the material receiving groove 34 transfers the powder to the lower outlet of the hopper and introduces it into the transmission pipe 1. By controlling the speed of the second motor 32, the feeding frequency of the material receiving groove 34 can be adjusted, thereby accurately controlling the falling speed and amount of powder. The pulley 6 at the front end of the rotating rod 31 can also provide power support for the subsequent turning anti-blocking component 4.

[0025] Example 3 In the third embodiment of this utility model, the anti-blocking component 4 includes a shaft 41, a tumbling blade 42, and a second pulley 43. The shaft 41 is located in the middle of the inside of the feed hopper 2, and both its front and rear ends extend out of the feed hopper 2 and are rotatably connected to the feed hopper 2. The number of tumbling blades 42 is several, and they are evenly sleeved on the surface of the shaft 41 and fixedly connected to the shaft 41. The second pulley 43 is fixedly connected to the front end of the shaft 41 and is connected to the first pulley 6 through a belt. A pressing wheel 7 is fitted onto the rear end surface of the shaft 41, and the pressing wheel 7 is fixedly connected to the shaft 41.

[0026] Specifically, by setting the anti-blocking component 4, the adsorption and compression state between powder particles can be broken by stirring, effectively avoiding powder bridging and blockage, and at the same time, power can be provided to the vibrating wall mechanism 5 to achieve functional linkage and improve the overall feeding stability.

[0027] Furthermore, in the flow control mechanism 3, the pulley 6 at the front end of the rotating rod 31 drives the pulley 43 to rotate via a belt. The pulley 43 drives the shaft 41 to rotate synchronously. The shaft 41 drives the evenly distributed tumbling blades 42 to rotate in the middle of the hopper, continuously stirring and tumbling the powder in the hopper. At the same time, when the shaft 41 rotates, it drives the extrusion wheel 7 at the rear end to rotate synchronously. During the rotation of the shaft 41, the extrusion wheel 7 can periodically extrude the extrusion plate 55 of the vibrating wall mechanism 5, providing a power basis for the patting and vibration action of the vibrating wall mechanism 5.

[0028] Example 4 In the fourth embodiment of this utility model, the vibrating mechanism 5 includes a rotating seat 51, a clapper 52, a tension spring 53, an L-shaped push rod 54, and an extrusion plate 55. The rotating seat 51 is fixedly connected to the upper left surface of the feed hopper 2. The upper end of the clapper 52 is sleeved on the surface of the rotating seat 51 and rotatably connected to the rotating seat 51. The shape of the clapper 52 matches the shape of the outer wall of the feed hopper 2. There are three tension springs 53, which are evenly fixedly connected to the lower right surface of the clapper 52 and arranged in a front-to-back position. The right ends of the three tension springs 53 are all fixedly connected to the lower left surface of the feed hopper 2. The L-shaped push rod 54 is fixedly connected to the middle of the rear surface of the clapper 52, and its rear end is bent at 90 degrees toward the direction close to the extrusion wheel 7. The extrusion plate 55 is fixedly connected to the left rear end of the L-shaped push rod 54 and corresponds to and is adapted to the extrusion wheel 7. Several rubber protrusions 8 are evenly fixedly connected to the surface of the clapper 52 near the feed hopper 2, and the rubber protrusions 8 are in contact with the outer wall of the feed hopper 2.

[0029] Specifically, by setting up the vibrating wall mechanism 5, the powder adhering to the inner wall of the hopper can be shaken off in time through periodic tapping and vibration, so as to avoid the accumulation of materials, which reduces the volume of the hopper or causes deterioration and pollution. At the same time, the rubber protrusions 8 can reduce the wear of the tapping on the outer wall of the hopper.

[0030] Furthermore, the shaft 41 of the anti-blocking component 4 drives the extrusion wheel 7 to rotate. Each rotation of the extrusion wheel 7 extrudes the extrusion plate 55. The extrusion plate 55 pushes the L-shaped push rod 54 to make the clapper 52 rotate around the rotating seat 51 and stretch the tension spring 53. When the extrusion wheel 7 disengages from the extrusion plate 55, the tension spring 53 resets and pulls the clapper 52 to rebound quickly. The rubber protrusions 8 on the inner side of the clapper 52 generate a patting vibration on the outer wall of the hopper, thereby shaking off the powder adhering to the inner wall.

[0031] Working principle: In use, motor 103 and motor 2 32 are turned on. After motor 103 starts, it drives the spiral rod 102 inside the transmission pipe 1 to rotate, providing the power basis for the subsequent conveying of powder in the transmission pipe 1. Motor 2 32 drives the rotating rod 31 in the flow control mechanism 3 to rotate. The rotating rod 31 synchronously drives the rubber cylinder 33 fixed on the surface to rotate. When the material receiving trough 34 on the rubber cylinder 33 rotates to the position that connects with the inside of the feed hopper 2, it will receive the powder material in the hopper. Then, as the rubber cylinder 33 continues to rotate, the material receiving trough 34 carries the powder to the outlet position that connects with the transmission pipe 1, quantitatively and uniformly introducing the powder into the transmission pipe 1, realizing the control of the powder falling speed and falling amount. At the same time, the pulley 6 at the front end of the rotating rod 31 drives the pulley 43 in the anti-blocking component 4 to rotate through the belt. The pulley 43 drives the shaft 41 and the evenly distributed agitating blades 42 to rotate in the middle of the feed hopper 2, agitating the powder. The paddle 42 continuously stirs and agitates the powder in the hopper, breaking the adsorption and compression between powder particles and preventing bridging due to poor powder mobility. When the shaft 41 rotates, it also drives the extrusion wheel 7 at the rear end to rotate synchronously. Each rotation of the extrusion wheel 7 generates an extrusion thrust on the extrusion plates 55 in the two vibrating wall mechanisms 5. The extrusion plates 55 push the L-shaped push rod 54 to drive the clapper 52 to rotate around the rotating seat 51. At this time, the tension spring 53 is stretched. When the extrusion wheel 7 disengages from the extrusion plate 55, the reset tension of the tension spring 53 causes the clapper 52 to rebound quickly, causing the rubber protrusion 8 on the inner side of the clapper 52 to beat and vibrate against the outer wall of the feed hopper 2, shaking off the powder adhering to the inner wall of the hopper in time and preventing the powder from adhering and accumulating. Finally, the powder introduced into the transmission pipe 1 is conveyed forward along the transmission pipe 1 and discharged from the discharge port 101 under the friction and thrust of the screw rod 102, completing the entire powder feeding and conveying process.

[0032] In summary, by using the combined components of transmission pipe 1, discharge port 101, screw rod 102, motor 103, feed hopper 2, support foot 21, flow control mechanism 3, rotating rod 31, motor 2 32, rubber cylinder 33, feeding trough 34, anti-blocking component 4, shaft 41, agitating blade 42, pulley 2 43, vibrating mechanism 5, rotating seat 51, clapper 52, tension spring 53, L-shaped push rod 54, extrusion plate 55, pulley 1 6, extrusion wheel 7, and rubber protrusion 8, the system achieves controllable powder falling speed and feed rate, prevents powder bridging and blockage, and shakes off powder adhering to the inner wall of the hopper, thereby improving the feeding stability and conveying efficiency of the screw conveyor.

[0033] The transmission pipe 1, discharge port 101, screw rod 102, motor 103, motor 2 32, pulley 2 43, pulley 6 and tension spring 53 used in this application can be additionally equipped with protective measures known in the art under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, etc., which are commonly used by those skilled in the art.

[0034] It should be noted that the transmission pipe 1, the discharge port 101, the screw rod 102, the first motor 103, the second motor 32, the second pulley 43, the first pulley 6, and the tension spring 53 are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the equipment, as well as the materials of each accessory and the selection of various parameters, are all common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0035] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0036] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0037] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A feeding mechanism for a powder conveying device, comprising a conveying pipe (1), a discharge port (101), a screw rod (102), and a motor (103), wherein the discharge port (101) is fixedly connected to the lower front end of the conveying pipe (1) and communicates with the conveying pipe (1), the screw rod (102) is disposed inside the conveying pipe (1), and both its front and rear ends are rotatably connected to the conveying pipe (1), and its rear end extends out of the conveying pipe (1), and the motor (103) is fixedly connected to the rear end of the screw rod (102) and is fixedly connected to the rear surface of the conveying pipe (1), characterized in that: The upper rear end of the transmission pipe (1) is fixedly connected to the feed hopper (2), the feed hopper (2) is interconnected with the transmission pipe (1), the four corners of the lower side of the feed hopper (2) are fixedly connected to the support feet (21), the feed hopper (2) is a cone-shaped hopper with a larger upper part and a smaller lower part, the lower end of the feed hopper (2) is provided with a flow control mechanism (3), the middle end of the feed hopper (2) is provided with a flipping anti-blocking component (4), and the left and right sides of the feed hopper (2) are respectively provided with a wall vibration mechanism (5).

2. The feeding mechanism of a powder conveying device according to claim 1, characterized in that: The flow control mechanism (3) includes a rotating rod (31), a second motor (32), a rubber cylinder (33), and a feeding trough (34). The rotating rod (31) is located at the lower end inside the feeding hopper (2), and both its front and rear ends extend out of the feeding hopper (2) and are rotatably connected to the feeding hopper (2). The second motor (32) is fixedly connected to the rear end of the rotating rod (31) and is fixedly connected to the lower end of the rear surface of the feeding hopper (2). The rubber cylinder (33) is sleeved on the surface of the rotating rod (31) and is fixedly connected to the rotating rod (31). There are two feeding troughs (34), which are respectively opened on the upper and lower sides of the rubber cylinder (33). The feeding troughs (34) correspond to the outlet positions at the lower end of the feeding hopper (2).

3. The feeding mechanism of a powder conveying device according to claim 2, characterized in that: The front end of the rotating rod (31) is fixedly connected to a pulley (6).

4. The feeding mechanism of a powder conveying device according to claim 3, characterized in that: The anti-blocking component (4) includes a shaft (41), a tumbling blade (42), and a second pulley (43). The shaft (41) is located in the middle of the feed hopper (2), and both ends extend out of the feed hopper (2) and are rotatably connected to the feed hopper (2). There are several tumbling blades (42), which are evenly sleeved on the surface of the shaft (41) and fixedly connected to the shaft (41). The second pulley (43) is fixedly connected to the front end of the shaft (41) and is connected to the first pulley (6) via a belt.

5. The feeding mechanism of a powder conveying device according to claim 4, characterized in that: The rear end surface of the shaft (41) is fitted with an extrusion wheel (7), and the extrusion wheel (7) is fixedly connected to the shaft (41).

6. The feeding mechanism of a powder conveying device according to claim 5, characterized in that: The vibrating mechanism (5) includes a rotating seat (51), a clapper (52), a tension spring (53), an L-shaped push rod (54), and a pressing plate (55). The rotating seat (51) is fixedly connected to the upper left surface of the feed hopper (2). The upper end of the clapper (52) is sleeved on the surface of the rotating seat (51) and rotatably connected to the rotating seat (51). The shape of the clapper (52) matches the shape of the outer wall of the feed hopper (2). There are three tension springs (53), which are evenly fixed. The three tension springs (53) are fixedly connected to the lower right surface of the clapper (52) and arranged in a front-to-back position. The right ends of the three tension springs (53) are fixedly connected to the lower left surface of the feed hopper (2). The L-shaped push rod (54) is fixedly connected to the middle of the rear surface of the clapper (52) and its rear end is bent at 90 degrees toward the extrusion wheel (7). The extrusion plate (55) is fixedly connected to the left rear end of the L-shaped push rod (54) and corresponds to and is adapted to the extrusion wheel (7).

7. The feeding mechanism of a powder conveying device according to claim 6, characterized in that: The clapper (52) has several rubber protrusions (8) evenly fixedly connected to the surface of the side of the feed hopper (2), and the rubber protrusions (8) are in contact with the outer wall of the feed hopper (2).

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