Feeding device

Abstract

The feeding device comprises a feeding part, a conveying rod and a conveying cylinder, a discharging opening of the feeding part communicates with a feeding opening of the conveying cylinder, at least part of one end of the conveying rod is arranged in the feeding part, a gap is formed between the conveying rod and the inner wall of the feeding part, and the other end of the conveying rod is connected with the conveying cylinder; the conveying rod can rotate so as to be used for driving materials in the feeding part to be conveyed into the conveying cylinder, the gap space between the conveying rod and the feeding part is large, the materials cannot be excessively extruded and sheared in the process of conveying the materials from the feeding part to the conveying cylinder, and conveying of brittle or sensitive materials is facilitated; when the conveying rod rotates, the conveying cylinder rotates synchronously, the conveying rod conveys the materials to the conveying cylinder from the discharging port, a screw rod structure is not arranged in the conveying cylinder, clearance space for extruding the materials does not exist, and therefore the materials cannot be damaged in the conveying process of the materials.

Description

Technical Field

[0001] The invention relates to the technical field of high-precision metering and conveying of brittle or sensitive materials, and in particular to a feeding device. Background Art

[0002] The screw metering and conveying device uses the mechanism of screw conveying. It is a volumetric feeding device that can achieve high-precision conveying of materials such as powders and particles. It mainly includes single-screw and twin-screw feeders. It is widely used in the metering and feeding of powders or solid particles in the medical, food, plastic and other industries. The existing screw metering and conveying devices are mostly conventional single-screw and twin-screw feeders. For brittle or sensitive materials, the large shearing and extrusion effect of the screw during the material transportation process will cause the fiber to break and the coating to break, which will destroy the shape and surface structure of the material and affect the material properties, such as fiber materials or materials with a coating on the surface. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a feeding device in order to overcome the defect that the conveying device in the prior art may damage the conveyed material when transporting the material.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] A feeding device comprises a feeding part, a transmission rod and a transmission cylinder, wherein the discharge port of the feeding part is connected with the feed port of the transmission cylinder, one end of the transmission rod is at least partially arranged in the feeding part and a gap is provided between the transmission rod and the inner wall of the feeding part, the other end of the transmission rod is connected to the transmission cylinder, and the transmission rod can rotate to drive the material in the feeding part to be transported into the transmission cylinder.

[0006] In this solution, since there is a gap between the transmission rod and the inner wall of the feeding part, the material will not be subjected to excessive extrusion and shear force during the process of being transported from the feeding part to the transmission cylinder, which is more conducive to the transportation of brittle or sensitive materials, so that the materials still maintain their original characteristics after transportation. The transmission rod is connected to the transmission cylinder, and when the transmission rod rotates, the transmission cylinder also rotates synchronously. The gap between the transmission rod and the feeding part is relatively large. After the transmission rod transports the material from the discharge port to the transmission cylinder, the material transported from the transmission rod will push the material in the transmission cylinder to move forward. The rotation of the transmission rod can effectively drive the material in the feeding part. It can also be used to transport a variety of brittle or sensitive materials by adjusting the size of the gap between the transmission rod and the inner wall of the feeding part to adapt to materials with different characteristics, thereby improving the versatility of the equipment. Since there is no need to set a transmission rod in the transmission cylinder to transport materials, the resistance in the material transportation process is reduced, and the energy efficiency of the overall equipment is improved.

[0007] Preferably, the transmission cylinder further comprises a material outlet, and the inner wall of the transmission cylinder is provided with a protrusion for driving the material to move toward the outlet.

[0008] In this solution, the material conveyed from the transmission rod will push the material in the transmission cylinder to move forward, and the protrusions set in the transmission cylinder can convey the material forward as the transmission cylinder rotates. Since the protrusions are directly set on the inner wall of the transmission cylinder, there is no gap space between the protrusions and the transmission cylinder that will squeeze the material, so the material will not be damaged during the material transmission process. The rotation of the transmission rod can effectively drive the material in the feeding part. Through the protrusions set on the inner wall of the transmission cylinder, the material can be continuously pushed and guided during the transmission process, avoiding the accumulation and adhesion of the material in the transmission cylinder, thereby improving the material transportation efficiency.

[0009] Preferably, the transmission rod is configured as at least one of a hollow spiral cylindrical screw, an intermittent blade cylindrical screw and an open cylindrical screw, and the feeding device also includes a driving assembly, and one end of the transmission rod is connected and fixed to the driving assembly.

[0010] In this solution, a variety of transmission rod forms meet the conveying needs of different materials. The transmission rod adopts at least one of the hollow spiral cylindrical screw, the intermittent blade cylindrical screw and the open cylindrical screw, which can optimize the conveying of materials with different characteristics. For materials with good fluidity, the hollow spiral cylindrical screw can increase the material conveying speed; for brittle or easily broken materials, the intermittent blade design can reduce the extrusion and shearing of the material; and the open cylindrical screw is suitable for handling materials with strong viscosity or easy to accumulate. Different types of transmission rods enable the equipment to better adapt to the conveying needs of various materials and enhance the versatility of the device. The equipment can handle various types of materials from high fluidity to low fluidity, from granules to powders. Combined with the speed regulation function of the drive component, the transmission rod can flexibly adjust the speed, further improving the equipment's adaptability to various working conditions, so that the feeding device can be widely used in different fields, such as food, pharmaceuticals, chemicals and other industries.

[0011] Preferably, the transmission rod is configured as a hollow spiral cylindrical screw, a limit piece is provided toward one end of the hollow spiral cylindrical screw by the driving assembly, one end of the hollow spiral cylindrical screw is sleeved on the limit piece, and the other end of the hollow spiral cylindrical screw extends into the transmission barrel and abuts against the inner wall of the transmission barrel. In this scheme, the design of the hollow spiral cylindrical screw enables the material to be slowly advanced along the spiral structure during the conveying process, reduces the shear force and extrusion force on the material during the conveying process, and reduces the occurrence of the material being destroyed in shape or physical properties due to excessive mechanical force during the conveying process. The hollow spiral cylindrical screw structure increases the space of the conveying channel, allowing the material to flow more smoothly, while avoiding the material accumulation problem that may be caused by the traditional solid screw. The hollow design not only reduces the weight of the screw, but also reduces mechanical friction, improves the material conveying efficiency and energy utilization, and makes the entire conveying process smoother and more energy-efficient. One end of the hollow spiral cylindrical screw is sleeved on the limiter, which can effectively limit the axial position of the screw to prevent it from deflecting or shaking during operation. The limiter provides precise positioning, so that the screw remains stable during rotation, avoiding uneven material delivery or jamming caused by instability, and improving the stability and consistency of the delivery process. The other end of the hollow spiral cylindrical screw extends into the transmission barrel and abuts against the inner wall of the transmission barrel, reducing the retention and accumulation of materials during the delivery process, avoiding possible blockage problems, and thus improving the material delivery efficiency.

[0012] Preferably, the transmission rod is configured as an intermittent blade type cylindrical screw, which is provided with a plurality of spiral ridges at circumferential intervals, and one end of the intermittent blade type cylindrical screw away from the drive assembly is connected and fixed to the inner wall of the transmission cylinder through the spiral ridges.

[0013] In this solution, the design of the intermittent blade cylindrical screw prevents the material from being tightly compressed by the continuous spiral structure during the conveying process. The intermittent blade arrangement of the screw forms multiple material buffers, which effectively reduces the extrusion force of the screw on the material. The intermittent blade screw is provided with a number of spiral ridges at circumferential intervals, which guide and push the material. The rotational motion can move forward more smoothly, reducing the conveying resistance caused by friction or adhesion. Compared with the traditional continuous blade screw, the design of the intermittent blades can effectively avoid the problem of material accumulation, thereby improving the conveying efficiency. One end of the intermittent blade cylindrical screw is connected and fixed to the inner wall of the transmission barrel through the spiral ridges. This design further improves the structural stability of the screw. The spiral ridges provide additional support, so that the screw maintains a stable connection with the transmission barrel during rotation, reducing unnecessary vibration and deviation. In addition, this type of screw relies on intermittent spiral ridges to generate thrust at the bottom of the hopper to convey materials.

[0014] Preferably, the transmission rod is configured as an open cylindrical screw, and one end of the open cylindrical screw away from the drive assembly extends into the transmission cylinder and is connected and fixed to the inner wall of the transmission cylinder through a connecting piece.

[0015] In this solution, the open cylindrical screw is suitable for materials with good fluidity. It relies on the bulk flow of the material to enter the transmission barrel to achieve the purpose of conveying the material. The design of the open cylindrical screw allows the material to flow smoothly through the opening area of ​​the screw, and reduces the force area of ​​the material during the screw conveying process, reducing the shear and extrusion force on the material. The material can be more easily transmitted to the transmission barrel through the screw, reducing the power demand of the drive system, thereby improving the overall transmission efficiency of the equipment, while reducing energy consumption and improving the energy-saving performance of the equipment.

[0016] Preferably, the feeding portion is further provided with a connecting port, and the driving assembly is connected to the transmission rod via the connecting port to drive the transmission rod to rotate.

[0017] In this solution, the drive assembly can adjust the rotation speed and rotation force according to the characteristics of the material, so that the feeding device can adapt to different brittle or sensitive material conveying requirements. The connection port set on the feeding part allows the drive assembly to extend into the feeding part or the transmission rod to partially extend out of the feeding part, thereby realizing the direct connection between the drive assembly and the transmission rod, so that the transmission cylinder and the transmission rod can rotate synchronously, thereby simplifying the entire transmission process, which can not only reduce the energy loss caused by the complex mechanical structure, but also improve the smoothness of material conveying. In conjunction with the protrusion, the material can be pushed forward continuously and smoothly, avoiding the problem of accumulation or adhesion in the transmission cylinder, thereby improving the continuity and stability of material conveying and reducing the downtime and maintenance requirements of the equipment.

[0018] Preferably, the driving assembly includes a driving member and a first sealing member, the two ends of the first seal are respectively connected to the driving member and the transmission rod, and a gap or abutment is provided between the wall surface of the first seal and the connecting port so that the first seal can rotate relative to the feeding part; and / or a gap or abutment is provided between the wall surface of the transmission cylinder and the discharge port so that the transmission cylinder can rotate relative to the feeding part.

[0019] In this solution, there is a gap or abutment between the wall surface of the first seal and the connection port, and the seal can rotate relative to the feed portion, thereby achieving smooth rotation of the transmission rod and preventing material leakage or contamination under the premise of ensuring the sealing effect. When a gap is provided between the first seal and the connection port, the gap is not enough to allow the flow of logistics, and can reduce the friction and friction loss when the first seal rotates, thereby achieving smooth rotation of the first seal and the transmission rod and reducing energy loss; when the first seal abuts the connection port, the two achieve a sealing effect but do not form a tight fixation, which can effectively prevent material leakage without affecting the rotation of the transmission rod.

[0020] Preferably, the driving member includes a driving motor and a speed regulator, and two ends of the speed regulator are respectively connected to the driving motor and the first sealing member to adjust the rotation speed of the transmission rod.

[0021] In this solution, the speed regulator is designed so that the speed of the transmission rod can be flexibly adjusted according to the characteristics of different materials. For different brittle or sensitive materials, the appropriate reduction ratio is adjusted to keep the transmission rod running at a suitable speed to avoid adverse effects of too high or too low speed on the material, thereby improving the accuracy of material transportation. For example, for easily broken materials, a lower speed can reduce shearing and extrusion, ensuring the integrity of the material.

[0022] Preferably, the transmission cylinder further comprises a cylinder body and a second sealing member, and the cylinder body is connected with the discharge port of the feeding part through the second sealing member.

[0023] In this solution, the second seal ensures the sealing of the connection between the transmission cylinder and the feeding part, which can effectively prevent the material from leaking from the connection during the transportation process, and also avoids the invasion of external contaminants into the material, thereby improving the hygiene and safety of the transportation process.

[0024] Preferably, the protrusion is configured as a threaded member.

[0025] In this solution, the spiral structure of the threaded member can match the direction of movement of the material. During the rotation of the transmission cylinder, the threaded protrusion continuously pushes the material forward. Compared with the simple protrusion design, the threaded member provides a continuous and stable thrust, avoiding the accumulation or stagnation of the material in the transmission cylinder, thereby ensuring the continuity and stability of material transportation. The threaded member can form an effect similar to spiral transportation, helping the material to be evenly pushed along the inner wall of the transmission cylinder. The threaded design reduces backflow and turbulence during material transportation, allowing the material to move forward more smoothly, thereby improving the transportation efficiency, especially for granular or powdery materials with poor fluidity. The spiral design of the threaded member can gently push the material and reduce the shearing and extrusion of the material during transportation. It is particularly important for brittle or sensitive materials (such as fibers or materials with a coating layer on the surface). The threaded member can effectively prevent the material from being damaged due to excessive force during transportation and maintain the original shape and characteristics of the material. Moreover, the thread shape can guide the material to be transported forward along a fixed path, preventing the material from adhering or accumulating on the inner wall of the transmission tube. The continuous pushing action reduces the retention time of the material, especially when conveying highly viscous or easily sticky materials, which can effectively prevent blockage and keep the conveying channel unobstructed. The design of the threaded component has high flexibility and can be adjusted according to the characteristics of different materials (such as particle size, fluidity, etc.) to meet the conveying needs of various types of materials.

[0026] Preferably, the feeding part comprises an upper hopper and a lower hopper, the upper hopper is connected to the lower hopper, and the transmission rod is arranged in the lower hopper.

[0027] In this solution, the layered design of the upper hopper and the lower hopper allows the material to enter the lower hopper from the upper hopper in sequence. The upper hopper can be used to temporarily store the material, and the material is gradually transferred to the lower hopper by gravity. The layered feeding method reduces the risk of blockage caused by a large amount of feeding at one time, maintains the smoothness of the material conveying process, and the material will not quickly impact the transmission rod, thereby avoiding damage to brittle or sensitive materials (such as fibers or materials with a coating on the surface). The material slowly falls to the lower hopper by gravity and is gently pushed and conveyed by the transmission rod, ensuring the integrity and performance of the material.

[0028] Preferably, the upper hopper is configured to be conical or cylindrical, and / or the lower hopper is configured to be hemispherical or triangular cone.

[0029] In this solution, the upper hopper is designed to be conical or straight, which is conducive to the smooth sliding of materials under the action of gravity and avoids the accumulation or adhesion of materials in the hopper. In particular, the conical design can concentrate the materials downward, thereby achieving more stable feeding. For granular or powdered materials, this shape optimizes the material flow path, reduces the retention of materials in the upper hopper, and ensures that the materials can enter the lower hopper evenly and continuously. The lower hopper is designed to be hemispherical or triangular cone, so that the materials can be effectively guided to the center position before entering the transmission rod for centralized transportation. The hemispherical design naturally guides the materials downward through its curved surface structure, reducing the accumulation of materials in the corners of the lower hopper. The triangular cone structure further uses the cone angle to accelerate the convergence of materials, ensuring that the materials can quickly enter the transmission rod position, thereby improving the efficiency and accuracy of feeding. The conical design of the upper hopper and the hemispherical or triangular cone structure of the lower hopper reduce the flat surfaces and sharp corners in the hopper, effectively preventing the adhesion and clogging of materials in the corners, which is more conducive to the transportation of highly viscous materials or fine powder materials, optimizes the fluidity of materials, reduces the possibility of material accumulation and clogging in the equipment, and ensures the long-term stable operation of the feeding system. It can also reduce the residue of materials in the corners, simplify the cleaning process, reduce maintenance time and cost, and improve the convenience of equipment operation.

[0030] The positive and progressive effects of the present invention are:

[0031] Since there is a gap between the transmission rod and the inner wall of the feeding part, the material will not be subjected to excessive extrusion and shear force during the process of being transported from the feeding part to the transmission cylinder, which is more conducive to the transportation of brittle or sensitive materials, so that the materials still maintain their original characteristics after transportation. The transmission rod is connected to the transmission cylinder. When the transmission rod rotates, the transmission cylinder also rotates synchronously. After the transmission rod transports the material from the discharge port to the transmission cylinder, the material transported from the transmission rod will push the material in the transmission cylinder to move forward. The rotation of the transmission rod can effectively drive the material in the feeding part. It can also be used to transport a variety of brittle or sensitive materials by adjusting the size of the gap between the transmission rod and the inner wall of the feeding part to adapt to materials with different characteristics, thereby improving the versatility of the equipment. Since there is no need to set a transmission rod in the transmission cylinder to transport materials, the resistance in the material transportation process is reduced, and the energy efficiency of the overall equipment is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a side view of the feeding device in the embodiment of the present invention;

[0033] Figure 2 It is a partial structural schematic diagram of a feeding device in an embodiment of the present invention;

[0034] Figure 3 It is a schematic diagram of the structure of the connection between the lower hopper and the transmission cylinder in an embodiment of the present invention;

[0035] Figure 4 It is a schematic diagram of the three-dimensional structure of the transmission cylinder in an embodiment of the present invention;

[0036] Figure 5 It is a schematic diagram of the internal structure of the transmission cylinder in an embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of the internal structure of the feeding device in Embodiment 1 of the present invention;

[0038] Figure 7 It is a front view of the connection between the hollow spiral cylindrical screw, the driving assembly and the transmission cylinder in the first embodiment of the present invention;

[0039] Figure 8 for Figure 7 Schematic diagram of the internal structure;

[0040] Fig. 9 It is a front view of the connection between the intermediate interrupted blade type cylindrical screw, the driving assembly and the transmission cylinder in the first embodiment of the present invention;

[0041] Fig.10 for Fig. 9 Schematic diagram of the internal structure;

[0042] Fig.11 It is a front view of the connection between the open cylindrical screw, the driving assembly and the transmission cylinder in the first embodiment of the present invention;

[0043] Fig.12 for Fig.11 Schematic diagram of the internal structure;

[0044] Fig.13 It is a line graph of the average contact force of the conveyed material under different conveying devices in the present invention;

[0045] Fig.14 A line graph showing the maximum contact force of the conveyed material under different conveying devices in the present invention;

[0046] Fig.15 It is a line graph of the average shear force of the conveyed material under different conveying devices in the present invention;

[0047] Fig.16 It is a line graph of the maximum shear force of the conveyed material under different conveying devices in the present invention;

[0048] Fig.17 A bar graph showing the relationship between the particle ratio and the magnitude of the force of the conveyed material under different conveying devices in the present invention;

[0049] Fig.18 It is a bar graph showing the relationship between the particle ratio of the shear force and the magnitude of the force of the conveyed material under different conveying devices in the present invention.

[0050] Description of reference numerals:

[0051] 100 Feeding device

[0052] 110 Feeding Department

[0053] 111 Upper hopper

[0054] 1111 Exhaust port

[0055] 1112 Feeding port

[0056] 112 lower hopper

[0057] 120 transmission rod

[0058] 121 screw edge

[0059] 122 Connectors

[0060] 130 transmission tube

[0061] 131 Second seal

[0062] 132 threaded components

[0063] 133 Feeding port

[0064] 140 drive components

[0065] 141 First Seal

[0066] 1411 limiter

[0067] 142 speed regulator

[0068] 150 support seat

[0069] 151 support pad DETAILED DESCRIPTION

[0070] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0071] Example 1

[0072] See also Figure 1-8 As shown, a feeding device 100 of this embodiment includes a feeding part 110, a transmission rod 120 and a transmission cylinder 130. The discharge port of the feeding part 110 is connected to the feed port 133 of the transmission cylinder 130. One end of the transmission rod 120 is at least partially disposed in the feeding part 110 and a gap is provided between the transmission rod 120 and the inner wall of the feeding part 110. The other end of the transmission rod 120 is connected to the transmission cylinder 130. The transmission rod 120 can rotate to drive the material in the feeding part 110 to be transported into the transmission cylinder 130. The inner wall of the transmission cylinder 130 is provided with a protrusion to drive the material to move. Since there is a gap between the transmission rod 120 and the inner wall of the feeding part 110, the material will not be subjected to excessive extrusion and shear force during the process of being transported from the feeding part 110 to the transmission cylinder 130, which is more conducive to the transportation of brittle or sensitive materials, so that the material still maintains its original characteristics after transportation. The transmission rod 120 is connected to the transmission cylinder 130. When the transmission rod 120 rotates, the transmission cylinder 130 also rotates synchronously. After the transmission rod 120 conveys the material from the discharge port to the transmission cylinder 130, the protrusions arranged in the transmission cylinder 130 can convey the material forward as the transmission cylinder 130 rotates. Since the protrusions are directly arranged on the inner wall of the transmission cylinder 130, there is no gap space between the protrusions and the transmission cylinder 130 that will squeeze the material, so the material will not be damaged during the material transmission process. The rotation of the transmission rod 120 can effectively drive the material in the feeding part 110. Through the protrusions arranged on the inner wall of the transmission cylinder 130, the material can be continuously pushed and guided during the transmission process, avoiding the accumulation and adhesion of the material in the transmission cylinder 130, thereby improving the material transportation efficiency. It is also possible to adjust the gap between the transmission rod 120 and the inner wall of the feeding part 110 to adapt to materials with different characteristics and be used for the transportation of a variety of brittle or sensitive materials, thereby improving the versatility of the equipment. Since there is no need to arrange the transmission rod 120 in the transmission cylinder 130 to transport the material, the resistance in the material transportation process is reduced and the energy efficiency of the overall equipment is improved.

[0073] like Figure 1 As shown, the feeding device 100 also includes a driving assembly 140, and the feeding part 110 is also provided with a connecting port (not shown in the figure), and the driving assembly 140 is connected to the transmission rod 120 through the connecting port to drive the transmission rod 120 to rotate. The driving assembly 140 can adjust the rotation speed and rotation force according to the characteristics of the material, so that the feeding device 100 can adapt to different brittle or sensitive material conveying requirements. The connecting port provided on the feeding part 110 allows the driving assembly 140 to extend into the feeding part 110 or the transmission rod 120 partially extends out of the feeding part 110, thereby realizing the direct connection between the driving assembly 140 and the transmission rod 120, so that the transmission cylinder 130 and the transmission rod 120 can rotate synchronously, thereby simplifying the entire transmission process, which can reduce the energy loss caused by the complex mechanical structure, and improve the smoothness of material conveying. In cooperation with the protruding member, the material can be pushed forward continuously and smoothly, avoiding the problem of accumulation or adhesion in the transmission cylinder 130, thereby improving the continuity and stability of material conveying, and reducing the downtime and maintenance requirements of the equipment.

[0074] like Figure 1-3 As shown, the driving assembly 140 includes a driving member and a first sealing member 141, and the two ends of the first sealing member are respectively connected to the driving member and the transmission rod 120. A gap or abutment is provided between the wall surface of the first sealing member 141 and the connection port so that the first sealing member 141 can rotate relative to the feeding part 110; and / or, a gap or abutment is provided between the wall surface of the transmission cylinder 130 and the discharge port so that the transmission cylinder 130 can rotate relative to the feeding part 110. In this embodiment, there is a gap between the circumferential side wall of the first sealing member 141 and the connection port, which is not enough to allow the flow of logistics to flow out, and can reduce the friction force and friction loss when the first sealing member 141 rotates, thereby achieving smooth rotation of the first sealing member 141 and the transmission rod 120 and reducing energy loss. In other alternative embodiments, the circumferential side wall of the first sealing member 141 can also abut against the connection port, and the two achieve a sealing effect but do not form a tight fixation, and can effectively prevent material leakage while not affecting the rotation of the transmission rod 120.

[0075] like Figure 2-8 As shown, the transmission cylinder 130 also includes a cylinder body and a second sealing member 131, and the cylinder body is connected to the discharge port of the feeding part 110 through the second sealing member 131. A small gap is provided between the circumferential side wall of the second sealing member 131 and the discharge port, which can not only ensure the sealing of the connection between the transmission cylinder 130 and the feeding part 110, effectively prevent the material from leaking from the connection during the conveying process, but also avoid the invasion of external pollutants into the material, thereby improving the hygiene and safety of the conveying process.

[0076] like Figure 5-8As shown, in this embodiment, the transmission rod 120 is set as a hollow spiral cylindrical screw, and the two ends of the hollow spiral cylindrical screw are respectively connected to the first seal 141 and the transmission barrel 130. The design of the hollow spiral cylindrical screw allows the material to be slowly advanced along the spiral structure during the conveying process, reducing the shear force and extrusion force of the material during the conveying process, and reducing the occurrence of the material being destroyed by excessive mechanical force during the conveying process. The hollow spiral cylindrical screw structure increases the space of the conveying channel, allowing the material to flow more smoothly, while avoiding the material accumulation problem that may be caused by the traditional solid screw. The hollow design not only reduces the weight of the screw, but also reduces mechanical friction, improves the material conveying efficiency and energy utilization, and makes the entire conveying process smoother and more energy-saving. The two ends of the hollow spiral cylindrical screw are respectively connected to the first seal 141 and the transmission barrel 130. This design not only realizes the effective rotation of the screw, but also improves the sealing performance of the device. The direct connection design between the hollow spiral cylindrical screw and the transmission barrel 130 enhances the linkage between the two. When the hollow spiral cylindrical screw rotates, it can synchronously drive the rotation of the transmission barrel 130, realizing a continuous and coordinated material conveying process. The protrusions in the transmission barrel 130 cooperate with the screw to ensure that the material is effectively guided during the conveying process, avoiding material accumulation or adhesion, and improving the conveying efficiency.

[0077] Furthermore, if Figure 5-8 As shown, the first sealing member 141 is provided with a limiter 1411 toward one end of the hollow spiral cylindrical screw, one end of the hollow spiral cylindrical screw is sleeved on the limiter 1411, and the other end of the hollow spiral cylindrical screw extends into the transmission barrel 130 and abuts against the inner wall of the transmission barrel 130. One end of the hollow spiral cylindrical screw is sleeved on the limiter 1411, which can effectively limit the axial position of the screw to prevent it from deflecting or shaking during operation. The limiter 1411 provides precise positioning, so that the screw remains stable during rotation, avoiding uneven material transportation or jamming caused by instability, and improving the stability and consistency of the transportation process. The other end of the hollow spiral cylindrical screw extends into the second sealing member 131 and abuts against its inner wall. In other alternative embodiments, it can also pass through the second sealing member 131 and extend into the inner wall of the transmission barrel 130, and abut and connect with the inner wall of the transmission barrel 130 to be fixed. It reduces the retention and accumulation of materials during the transportation process, avoids possible blockage problems, and thus improves the material transportation efficiency.

[0078] like Figure 4-7As shown, the protrusion is set as a threaded member 132. The spiral structure of the threaded member 132 can match the movement direction of the material. During the rotation of the transmission cylinder 130, the threaded protrusion continuously pushes the material forward. Compared with the simple protrusion design, the threaded member 132 provides a continuous and stable thrust, avoiding the accumulation or stagnation of the material in the transmission cylinder 130, thereby ensuring the continuity and stability of the material transportation. The threaded member 132 can form a similar effect of spiral transportation, helping the material to be evenly pushed along the inner wall of the transmission cylinder 130. The thread design reduces the backflow and turbulence during the material transportation process, so that the material can be pushed forward more smoothly, thereby improving the transportation efficiency, especially suitable for granular or powdery materials with poor fluidity. The spiral design of the threaded member 132 can gently push the material and reduce the shearing and extrusion of the material during the transportation process. It is particularly important for brittle or sensitive materials (such as fibers or materials with a coating layer on the surface). The threaded member 132 can effectively prevent the material from being damaged due to excessive force during the transportation process and maintain the original shape and characteristics of the material. Moreover, the thread shape can guide the material to be transported forward along a fixed path, preventing the material from adhering or accumulating on the inner wall of the transmission cylinder 130. The continuous pushing action reduces the retention time of the material, especially when transporting highly viscous or easily sticky materials, it can effectively prevent blockage, thereby keeping the conveying channel unobstructed. The design of the threaded member 132 has high flexibility and can be adjusted according to the characteristics of different materials (such as particle size, fluidity, etc.) to meet the transportation needs of various types of materials.

[0079] In other alternative embodiments, the protrusions may be configured to be blade-shaped or fin-shaped, and may be other structures disposed on the inner wall of the transmission cylinder 130 and capable of conveying the material forward by rotation.

[0080] like Figure 1 As shown, the feeding part 110 includes an upper hopper 111 and a lower hopper 112, the upper hopper 111 is connected to the lower hopper 112, and the transmission rod 120 is arranged in the lower hopper 112. The layered design of the upper hopper 111 and the lower hopper 112 allows the material to enter the lower hopper 112 from the upper hopper 111 in sequence, the upper hopper 111 can be used to temporarily store the material, and the material is gradually transferred to the lower hopper 112 by gravity. The layered feeding method reduces the risk of blockage caused by a large amount of one-time feeding, keeps the material conveying process smooth, and the material will not quickly impact the transmission rod 120, thereby avoiding damage to brittle or sensitive materials (such as fibers or materials with a coating layer on the surface). The material slowly falls to the lower hopper 112 by gravity, and is gently pushed and conveyed by the transmission rod 120, ensuring the integrity and performance of the material.

[0081] Furthermore, the upper hopper 111 is configured to be conical or straight-cylindrical, and / or the lower hopper 112 is configured to be hemispherical or triangular-conical. The upper hopper 111 is designed to be conical or straight-cylindrical, which is conducive to the smooth sliding of the material under the action of gravity, and avoids the accumulation or adhesion of the material in the hopper. In particular, the conical design can concentrate the material downward, thereby achieving more stable feeding. For granular or powdered materials, this shape optimizes the material flow path, reduces the retention of materials in the upper hopper 111, and ensures that the material can enter the lower hopper 112 evenly and continuously. The lower hopper 112 is designed to be hemispherical or triangular-conical, so that the material can be effectively guided to the center before entering the transmission rod 120 for centralized transportation. The hemispherical design naturally guides the material downward through its curved surface structure, reducing the accumulation of materials in the corners of the lower hopper 112. The triangular cone structure further uses the cone angle to accelerate the convergence of materials, ensuring that the materials can quickly enter the transmission rod 120 position, thereby improving the efficiency and accuracy of feeding. The conical design of the upper hopper 111 and the hemispherical or triangular cone structure of the lower hopper 112 reduce the planes and sharp corners in the hopper, effectively preventing the adhesion and clogging of materials in the corners, which is more conducive to the transportation of highly viscous materials or fine powder materials, optimizes the fluidity of materials, reduces the possibility of material accumulation and clogging in the equipment, and ensures the long-term stable operation of the feeding system. It can also reduce the residue of materials in the corners, simplify the cleaning process, reduce maintenance time and cost, and improve the convenience of equipment operation.

[0082] In this embodiment, the upper hopper 111 is configured to be conical, and the lower hopper 112 is configured to be spherical.

[0083] like Figure 1 As shown, the driving member includes a driving motor (not shown in the figure) and a speed regulator 142. The two ends of the speed regulator 142 are respectively connected to the driving motor and the first sealing member 141 to adjust the rotation speed of the transmission rod 120. The design of the speed regulator 142 allows the rotation speed of the transmission rod 120 to be flexibly adjusted according to the characteristics of different materials. For different brittle or sensitive materials, the appropriate reduction ratio is adjusted to keep the transmission rod 120 running at a suitable speed to avoid adverse effects of too high or too low rotation speed on the material, thereby improving the accuracy of material transportation. For example, for easily broken materials, a lower rotation speed can reduce shearing and extrusion to ensure the integrity of the material.

[0084] In the embodiment, the power device selects a servo motor to provide stable power and precise speed regulation for the rotation of the conveying cylinder.

[0085] In this embodiment, the feeding device 100 further includes a base, in which a weight sensor is arranged for real-time monitoring of the weight of all objects on the base, and four flexible support pads 151 are arranged under the base for buffering the vibration of the feeding device 100 during the feeding process and improving the weight detection accuracy. Figure 1 As shown, the upper hopper 111 of the feeding device 100 is also provided with an exhaust port 1111 and a feeding port 1112 , through which materials are added to the upper hopper 111 , and the exhaust port 1111 can maintain the stability of the air pressure inside the feeding part 110 .

[0086] Example 2

[0087] The other structures in this embodiment are the same as those in the first embodiment. Specifically, Fig. 9 and Fig.10 In the embodiment shown, the transmission rod 120 is set as an intermittent blade type cylindrical screw, and a plurality of spiral ridges 121 are arranged at circumferential intervals on the intermittent blade type cylindrical screw. One end of the intermittent blade type cylindrical screw is connected and fixed to the first seal 141, and the other end is connected and fixed to the inner wall of the second seal 131 through the spiral ridges 121. In other alternative embodiments, it can also pass through the second seal 131 and extend into the inner wall of the transmission cylinder 130, and abut and connect and fix with the inner wall of the transmission cylinder 130. The design of the intermittent blade type cylindrical screw prevents the material from being tightly compressed by the continuous spiral structure during the conveying process. The intermittent arrangement of the blades of the screw forms multiple material buffers, which effectively reduces the extrusion force of the screw on the material. The intermittent blade type screw is distributed with a plurality of spiral ridges 121 at circumferential intervals, and the spiral ridges 121 play the role of guiding and pushing the material. The rotational motion can move forward more smoothly, reducing the conveying resistance caused by friction or adhesion. Compared with the traditional continuous blade screw, the design of the intermittent blades can effectively avoid the problem of material accumulation, thereby improving the conveying efficiency.

[0088] Example 3

[0089] The other structures in this embodiment are the same as those in the first embodiment. Specifically, Fig.11 and Fig.12In the embodiment shown, the transmission rod 120 is set as an open-type cylindrical screw, one end of which is connected and fixed to the first seal 141, and the other end extends into the second seal 131 and is connected and fixed to the inner wall of the second seal 131 through the connector 122. In other alternative embodiments, the transmission rod 120 can also extend into the inner wall of the transmission cylinder 130 after passing through the second seal 131, and be connected and fixed with the inner wall of the transmission cylinder 130 in abutment. The open-type cylindrical screw is suitable for materials with good fluidity. It relies on the bulk flow of the material to enter the transmission cylinder 130 to achieve the purpose of conveying the material. The design of the open-type cylindrical screw allows the material to flow smoothly through the opening area of ​​the screw, reduces the force area of ​​the material during the screw conveying process, reduces the shear and extrusion force on the material, and can be more easily transmitted to the transmission cylinder 130 through the screw, reducing the power demand of the drive system, thereby improving the overall transmission efficiency of the equipment, while reducing energy consumption and improving the energy-saving performance of the equipment.

[0090] The intermittent blade type, hollow spiral type and open type screws can all maintain a relatively large gap with the bottom of the lower hopper 112. For intermittent blades and hollow spirals, a gap of 5-15 mm, preferably 5-8 mm, can be selected. For open screws, a gap of 10-20 mm, preferably 12-15 mm, can be selected between the rotating shaft and the bottom of the lower hopper 112.

[0091] Specifically, Figure 13-18 As shown, the feeding device in the present invention is a cylindrical conveying device without a screw. It is compared with a conventional screw conveying device, and the average contact force of the conveyed material under different conveying devices is tested (such as Fig.13 as shown), maximum contact force (as shown Fig.14 as shown), average shear stress (as shown Fig.15 as shown), maximum shear force (as shown Fig.16 as shown), the relationship between the proportion of particles in contact force and the magnitude of force (as shown Fig.17 as shown) and the relationship between the particle ratio of shear force and the magnitude of the force (as shown Fig.18 As shown in the figure, it can be concluded that the screw-free cylindrical feeding device in the present invention can reduce the contact force and shear force received by the conveyed material during the continuous conveying process, thereby reducing the damage to the material.

[0092] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A feeding device, comprising a feeding part, a transmission rod and a transmission cylinder, wherein the discharge port of the feeding part is connected to the feed port of the transmission cylinder, characterized in that: One end of the transmission rod is at least partially disposed in the feeding part and a gap is provided between the transmission rod and the inner wall of the feeding part. The other end of the transmission rod is connected to the transmission cylinder. The transmission rod can rotate to drive the material in the feeding part to be transported into the transmission cylinder.

2. The feeding device according to claim 1, characterized in that: The transmission cylinder further comprises a material outlet, and a protrusion is arranged on the inner wall of the transmission cylinder for driving the material to move toward the material outlet.

3. The feeding device according to claim 1, characterized in that: The transmission rod is configured as at least one of a hollow spiral cylindrical screw, an intermittent blade cylindrical screw and an open cylindrical screw. The feeding device also includes a driving assembly, and one end of the transmission rod is connected and fixed to the driving assembly.

4. The feeding device according to claim 3, characterized in that: The transmission rod is configured as a hollow spiral cylindrical screw, and the driving assembly is provided with a limiting piece toward one end of the hollow spiral cylindrical screw, one end of the hollow spiral cylindrical screw is sleeved on the limiting piece, and the other end of the hollow spiral cylindrical screw extends into the transmission cylinder and abuts against the inner wall of the transmission cylinder.

5. The feeding device according to claim 3, characterized in that: The transmission rod is configured as an intermittent blade type cylindrical screw, and a plurality of screw ridges are arranged at circumferential intervals on the intermittent blade type cylindrical screw. One end of the intermittent blade type cylindrical screw away from the drive assembly is connected and fixed to the inner wall of the transmission cylinder through the screw ridges.

6. The feeding device according to claim 3, characterized in that: The transmission rod is configured as an open cylindrical screw, and one end of the open cylindrical screw away from the driving assembly extends into the transmission cylinder and is connected and fixed to the inner wall of the transmission cylinder through a connecting piece.

7. The feeding device according to claim 3, characterized in that: The feeding part is also provided with a connecting port, and the driving assembly is connected to the transmission rod through the connecting port to drive the transmission rod to rotate.

8. The feeding device according to claim 7, characterized in that: The driving assembly includes a driving member and a first sealing member, two ends of the first sealing member are respectively connected to the driving member and the transmission rod, and a gap or abutment is provided between the wall surface of the first sealing member and the connecting port so that the first sealing member can rotate relative to the feeding portion; And / or, a gap or abutment is provided between the wall surface of the transmission cylinder and the discharge port so that the transmission cylinder can rotate relative to the feeding part.

9. The feeding device according to claim 8, characterized in that: The driving member includes a driving motor and a speed regulator, and two ends of the speed regulator are respectively connected to the driving motor and the first sealing member to adjust the rotation speed of the transmission rod.

10. The feeding device according to claim 8, characterized in that: The transmission cylinder further comprises a cylinder body and a second sealing member, and the cylinder body is communicated with the discharge port of the feeding part through the second sealing member.

11. The feeding device as claimed in claim 2, characterized in that: The protrusion is configured as a thread extending along the transmission cylinder.

12. The feeding device according to claim 1, characterized in that: The feeding part comprises an upper hopper and a lower hopper, the upper hopper is connected to the lower hopper, and the transmission rod is arranged in the lower hopper.

13. The feeding device according to claim 12, characterized in that: The upper hopper is configured to be conical or cylindrical, and / or the lower hopper is configured to be hemispherical or triangular cone.

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