Powder bridge breaking and agitating device

Abstract

To provide a powder bridge breaking and agitating device.SOLUTION: A wiper holder is installed at a rotary arm 42 terminal, a wiper 41 is installed in the wiper holder, power is transmitted to a lateral direction transmission shaft and rotation is made to perform by driving the lateral direction transmission shaft, then the rotation of a vertical direction transmission shaft is interlocked through lateral direction and vertical direction bevel gears; thereby, an upper lid 4 and the wiper 41 arranged at the terminal of the rotary arm 42 are driven, advancement continues by a circular route in a hopper. Thereby, kinetic energy of the wiper 41 breaks attachment and connection force between powder granules, the powder continuously falls by the action of self weight, and smooth flow and discharge of the powder in a silo is maintained. The work environment of the device is filled with powder and powder dust, and by installing a protection mechanism of three layers, an influence on the transmission of the device due to the powder entering a power transmission section and causing abrasion of components is prevented, and stability and effectiveness of the invention is maintained during the whole operation.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a powder bridge breaking and stirring device. [Background technology]

[0002] Various powders pose various challenges to powder factories due to their unique physical properties, such as reactivity and adsorption. Natural phenomena such as powder adhesion, caking, brittleness, blockage, bridging, and segregation can all cause powder mill production to stop. Effectively resolving these problems is a major challenge for system designers, manufacturers, and users. In today's world, where production factories are becoming larger, more automated, and more labor-saving, the smooth transport of powder is a more pressing issue for producers than quality issues alone. Powder plugging / bridging is a phenomenon in which powder in a container bridges together, and the adhesive and bonding forces of the powder particles create a supporting force in a certain layer inside the powder that balances the powder pressure from above. This phenomenon maintains static equilibrium even if there is no supporting force below the layer.

[0003] Among the various problems mentioned above, powder bridging in the hopper, which causes production stoppage, is one of the most common troubles in powder mill operations, and effectively solving this problem is extremely important for the production efficiency of the powder mill.

[0004] The present invention provides a powder bridge breaking and stirring device, and in particular, converts the direction of power from the output of a gear motor through a set of power transmission components to drive a wiper, which breaks powder bridges through the wiper and promotes smooth flow and discharge of powder within a silo. Furthermore, since the working environment of this device is filled with powder and dust, the device is equipped with first to third protection mechanisms. This reliably prevents the intrusion of powder and prevents deterioration of transmission performance due to wear of power transmission components, and as a result, the present invention can maintain stability and effectiveness during operation.

[0005] Conventional measures against powder bridging and their drawbacks are as follows:

[0006] Increasing the hopper angle of the silo: This method cannot completely solve the powder bridging problem and has the disadvantage of reducing the storage capacity of the silo.

[0007] Tapping: This method can cause significant damage to the structure of the storage tank and can also cause the powder at the top to suddenly spill out, a phenomenon known as "flushing." Therefore, the practical effect is low.

[0008] High-pressure air injection: First, high-pressure air causes dust to fly, raising the temperature of the working environment and significantly increasing the risk of dust explosions. Secondly, compressed air is hot and humid, which can promote powder caking and cause changes in powder quality. Furthermore, when discharging a large amount of air, a filter device must be installed, which increases the complexity of the work.

[0009] Vibrators: The impact and vibration caused by the operation of a vibrator may generate high temperatures and sparks, posing a risk of dust explosion. Furthermore, most of the kinetic energy of the vibrator is absorbed by the storage tank, resulting in increased damage to the tank structure. Vibration can also have an adverse effect on certain materials, causing them to become denser or causing the powder to separate in size (segregation). This may result in a loss of powder quality stability.

[0010] In the technique disclosed in Patent Document 1 (hereinafter, the reference numerals are the component reference numerals of Patent Document 1), an inner ring 2 is disposed between an upper body 1a and a lower body 1b. Steel balls 4 are placed between the upper body 1a, the lower body 1b, and the inner ring 2 instead of large bearings to support the inner ring. Furthermore, a reduction motor 13 drives an inner ring via a gear 10, causing it to rotate between the upper body 1a and the lower body 1b. The wiper holder 2b is fixed to the inner ring, and the wiper 3 is disposed within the wiper holder. As the inner ring moves circumferentially inside hopper B, it breaks the bridges of powder and granules inside the hopper, encouraging the powder to fall.

[0011] The disadvantages of Patent Document 1 in terms of application are as follows. In order to prevent powder from entering the installation area of ​​the gear 10 inside the inner ring, a seal ring 6 is installed between the upper body and the inner ring 2, and between the lower body and the inner ring 2, and an air blow-cleaning device is also used as an auxiliary device. However, since the gap between the inner ring 2 and the upper and lower bodies is large, and the circumference of the inner ring is also large, it is difficult to equalize the pressure by blowing air. Due to these factors, powder may penetrate into the mechanical structure of the inner ring through the gaps during operation of the device, causing wear of the inner ring 2 and the gear 10, and ultimately resulting in damage to the device.

[0012] Furthermore, when powders with non-uniform particle sizes are put into a storage tank, segregation occurs. This causes uneven particle size distribution during transportation and discharge, leading to uneven dissolution and reaction in subsequent processes. This may result in a reduced commercial value of the final product. Moreover, the segregation phenomenon becomes more pronounced when (1) the feeding speed is slow, (2) the powder and granular material has high fluidity, and (3) the particle size distribution range is wide. Conventional countermeasures are limited, and it is still not possible to completely prevent segregation.

[0013] In view of the above, we, the inventors, have been researching further improvements to the bridge breaking device and methods for effectively preventing powder from penetrating into the machine structure. In order to solve these problems, we embarked on development and improvement, aiming to realize the optimum invention, and after numerous tests and improvements, we have completed the present invention. [Prior art documents] [Patent documents]

[0014] [Patent Document 1] European Patent Publication No. EP2407397A1 Summary of the Invention [Problem to be solved by the invention]

[0015] The prior art suffers from various drawbacks. [Means for solving the problem]

[0016] The present invention relates to a powder bridge breaking and stirring device that solves the above-mentioned problems.

[0017] The powder bridge breaking and stirring device according to the present invention is a device to be installed at the outlet end of a silo, The powder bridge breaking and stirring device includes a main body, a power transmission component, an upper cover, a lower cover, a wiper, and a gear motor; The main body is installed in a ring shape, connected to and fixed under the silo, with a powder passage in the center, a gearbox installed at the center of the main body, and connecting pipes installed on both sides of the gearbox and fixed to the main body. One of the connecting pipes has a hollow tubular structure and is used to install power transmission components inside, and the other connecting pipe has a hollow tubular structure and is used as a high-pressure air passage; The top cover is disposed corresponding to the top of the gearbox, and a wiper is installed; The gear motor is connected to the main body by a motor mount, and is connected to the horizontal transmission shaft to transmit power. When the horizontal transmission shaft is driven to rotate, the rotation of the vertical transmission shaft is linked through the horizontal and vertical bevel gears, thus driving the top cover. The wiper located at the end of the rotating arm moves forward in a circular route within the hopper. As a result, the kinetic energy of the wiper breaks the adhesion and bonding force between the powder granules, allowing the powder to fall continuously under its own gravity, thereby maintaining the fluidity of the powder in the silo and smooth discharge.

[0018] The present invention uses the vertical bevel gear and horizontal bevel gear arrangement of the power transmission components to transmit the driving direction of the gear motor according to the rotation direction, and transmits the power to the wiper to break the powder bridge; The overall installation and transmission structure of the present invention is simple, does not generate vibration or noise during operation, does not affect the working temperature, and the slow movement of the wiper not only prevents the bridge from being destroyed but also prevents powder from flying, ensuring stability and safety during powder delivery.

[0019] The working environment of this equipment is full of powder and dust, so it is important to effectively prevent the intrusion of powder and prevent the equipment from being worn or damaged. To this end, the equipment is designed with the following three-layer protection mechanism to ensure safe and effective operation.

[0020] The first layer of protection is an air blower. When the transport system is in operation, high-pressure air is blown in from the center of the gearbox and out through the gap between the top cover and the gearbox, creating a high-pressure area inside the gearbox, which prevents powder from entering and improves the powder-proof ability of the present invention, maintaining the transmission state of each component of the present invention, preventing wear caused by powder intrusion, and ensuring smooth operation of the present invention, resulting in a significant improvement in the service life. The second layer of protection is the labyrinth seal. Even if the device is surrounded by powder when the transport system is temporarily stopped, or if the supply of high-pressure air is stopped, the uneven shape of the labyrinth structure prevents powder from entering the gap between the top cover and the gearbox. The labyrinth seal of this device is equipped with at least one lower labyrinth seal layer on the top ring surface of the gearbox, and a corresponding upper labyrinth seal layer on the bottom surface of the top cover. The top cover is installed to cover the top end of the gearbox, and a corresponding concave-convex labyrinth structure is formed between the upper and lower layers of the labyrinth seal, which prevents powder from entering the power transmission components through the gap between the upper and lower layers of the labyrinth seal, improving the powder blocking effect of the present invention and further enhancing its protective performance.

[0021] The third layer of protection is a mechanical shaft seal, which is installed before the bearings of the horizontal and vertical transmission shafts. This is the last line of defense to prevent powder from entering the gearbox, reliably and effectively blocking the intrusion of powder, thereby preventing it from entering the power transmission components and ensuring the effective and stable operation of the present invention. Furthermore, at least one transmission shaft bearing is installed between the vertical transmission shaft and the gearbox, between the vertical transmission shaft and the bottom cover, or at least one of the horizontal transmission shafts, and the bearings are arranged at the front and rear ends of the horizontal and vertical transmission shafts, and each transmission shaft bearing is equipped with a bearing seal.

[0022] The upper end of the cover is cone-shaped, and one side of the cover is extended to accommodate a rotating arm. A wiper holder is installed at the end of the rotating arm. The shape of the wiper holder can fix the direction of the wiper, preventing the wiper from being biased or shaking. Furthermore, the wiper is assembled to move in accordance with the rotating arm, allowing the wiper to be removed separately for cleaning or replacement.

[0023] The present invention further provides that at least one contact is provided on the outer surface of the body, and a grounding wire is connected to the contact, thereby discharging static electricity generated by friction of powder.

[0024] This device provides two mounting and fixing methods, one is flange connection and the other is clamp connection, which provides flexible options for powder mills according to their individual operational needs. The structural arrangement of the present invention is highly adaptable, as it allows for stable installation using flanges under normal circumstances, and the clamp method can be selected for special processes that require frequent removal (such as cleaning and disinfection), thereby improving the convenience and efficiency of assembly and disassembly.

[0025] In one embodiment of the present invention, the invention is configured as an agitator for agitating powder and granular material, in which the wiper is arranged as an agitating blade, the agitating blade has a multi-layered assembled structure, has at least one assembly shaft, and a plurality of blades are installed on the assembly shaft, and when a plurality of assembly shafts are arranged, the blade has a multi-layered structure, and is rotated by driving a gear motor, This allows the blade to generate a downward thrust, stirring the powder and assisting in conveying it at the same time, ensuring uniform and sufficient stirring even for powders with uneven particle sizes and preventing segregation, thereby improving the output quality of the powder and improving the quality and stability of the final product. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is a schematic three-dimensional view of the present invention. [Figure 2] FIG. 1 is a schematic exploded view of the present invention. [Figure 3] FIG. 2 is a schematic exploded view of the present invention from another angle. [Figure 4] 1 is a schematic exploded view of a power transmission component and a top cover according to the present invention; FIG. [Figure 5] FIG. 2 is a schematic cross-sectional view taken along the line AA in FIG. [Figure 6] 1 is a schematic diagram of a cross section and a state of use when the present invention is installed in a silo. [Figure 7] FIG. 1 is an overhead view of the present invention. [Figure 8] FIG. 2 is a partial enlarged view of the present invention, showing a partial cross-sectional schematic view of the labyrinth seal and the connection of the power transmission component and the top cover. [Figure 9] FIG. 10 is a schematic diagram of another embodiment of the present invention, in which a quick release mechanism is used to connect to a silo. [Figure 10] FIG. 10 is a schematic exploded view based on FIG. 9. [Figure 11] FIG. 10 is a schematic three-dimensional view of another embodiment of the present invention in which wipers are arranged as stirring blades. [Figure 12] FIG. 12 is a schematic exploded view based on FIG. 11. DETAILED DESCRIPTION OF THE INVENTION

[0027] (One embodiment) To help you understand and appreciate the present invention, we will now describe in detail some of the best embodiments of the technical means of the inventors with reference to the drawings.

[0028] As shown in Figures 1 to 8, the powder bridge breaking and mixing device of the present invention is an apparatus installed at the outlet end 11 of a silo 1, and includes a main body 2, a power transmission component 3, an upper cover, a lower cover, a wiper, and a gear motor.

[0029] The main body 2 is installed in an annular shape and has a structure with reinforcing ribs to increase structural strength while reducing weight. Its outer shape is designed to fit the outlet end 11 of the silo 1 and can be correspondingly connected. As is known, the silo 1 stores powder P, and after being discharged through the outlet end 11, the powder P is discharged through the main body 2. The main body 2 has a powder passage 21 formed in the center, and the powder P is discharged through the powder passage 21. A first connecting tube 22 (Connecting Tube / Beam) and a second connecting tube 72 are installed on one side of the inner edge of the main body 2. The inside of the first connecting tube 22 has a hollow tubular structure and power transmission components are installed inside, and the inside of the second connecting tube 72 has a hollow tubular structure and is a high-pressure air passage. The first connecting pipe 22 is installed at one end position within the powder passage 21 so as to communicate with the tubular gear box 23, and the other end of the first connecting pipe 22 communicates with the outer surface of the main body 2, and a through hole 221 is formed on the outside. In a specific embodiment, the body 2 is manufactured by precision casting of stainless steel, which has high precision and strength, excellent corrosion resistance, and is easy to manufacture and maintain. Other powder conveying equipment such as a rotary valve can be connected to the lower end of the main body 2, and powder P is supplied by this, but this is merely an example and is not limited to this. As for the method of mounting the silo 1, as shown in Figures 1 to 8, flanges 25 are installed on the side edges of the upper and lower ends of the main body 2, thereby directly connecting and fixing the silo 1, and the lower end is positioned corresponding to other powder P transport devices and connected in a similar manner. In another embodiment, when frequent special processing (such as cleaning or disinfection) is required, a pipe clamp 9 (Tri-Clamp; Pipe Clamp) can be used to facilitate cleaning and maintenance of the inside of the silo 1 or the main body 2, as shown in Figures 9 and 10, allowing for quick assembly and disassembly, thereby increasing the convenience and applicability of the present invention and enabling it to be adapted to various types of silos 1 for corresponding assembly / disassembly and cleaning / maintenance. A powder factory can select the flange 25 or pipe clamp 9 connection type for its production system according to its production characteristics. Therefore, the main body 2 is selectively equipped with a flange 25 or a pipe clamp 29 at the top end according to the piping connection type of the powder factory, and is installed corresponding to the outlet end 11 of the silo 1 .

[0030] The power transmission component 3 is provided with a vertical transmission shaft 31, a vertical bevel gear 32, a horizontal bevel gear 33, and a horizontal transmission shaft 34. In the present invention, the term "vertical direction" refers to the direction of the powder passage 21 of the main body 2. The vertical transmission shaft 31 is pivotally mounted through the gear box 23, and the upper end of the vertical transmission shaft 31 is connected to the upper cover 4 for power transmission. The vertical transmission shaft 31 is transmission-connected to the vertical bevel gear 32, and the horizontal transmission shaft 34 is installed through the first connecting pipe 22 and transmission-connected to the horizontal bevel gear 33, and the horizontal bevel gear 33 meshes with the vertical bevel gear 32. The gearbox 23 can accommodate the vertical bevel gear 32 and the horizontal bevel gear 33 correspondingly, and is arranged with a speed reduction function. In one embodiment, the vertical bevel gear 32 is large and has a large number of teeth, while the horizontal bevel gear 33 is small and has a small number of teeth, thereby achieving the purposes of changing direction and speed reduction.

[0031] The top cover 4 is positioned to correspond to the upper end of the gearbox 23, so that the vertical transmission shaft 31 transmits power to the top cover 4 to rotate it, and a wiper 41 extending to the top end of the main body 2 is installed on the top cover 4. To install the wiper 41, a rotating arm 42 is extended from one side of the upper cover 4, and a wiper holder 43 is installed at the end of the rotating arm 42. The shape of the wiper holder 43 can fix the direction of the wiper 41, so that the wiper does not become biased or shake, and the wiper 41 can be directly or movably attached to the wiper holder 43, so that the wiper 41 can be removed from the wiper holder 43 for cleaning or replacement. The wiper 41 is installed at an angle to correspond to the contour of the silo 1, and in combination with the above-mentioned installation, the wiper 41 can reliably correspond to the contour of the silo 1 and can adapt to various silo hopper angles in each powder factory. Through the mounting arrangement between the wiper 41 and the rotating arm 42, the wiper 41 of an appropriate length or inclination can be selected according to the type or pipe diameter of the silo 1, and can be directly assembled to the rotating arm 42 or fixed with screws.

[0032] A gear motor 5 is arranged as a reduction motor in one embodiment to provide power. With this arrangement, the gear motor 5 can correspondingly deliver power to the transverse transmission shaft 34 arranged to rotate within the first connecting pipe 22 . As described above, direction change and reduction transmission are performed via the vertical bevel gear 32, and the vertical transmission shaft 31 is rotated in conjunction with the vertical bevel gear 32, thereby driving the top cover 4. In this way, the top cover 4 cooperates with the wiper 41 to rotate slowly in a circular path, destroying the bridging phenomenon with respect to the powder P, or agitating the powder P, or assisting in the transport. Preferably, as shown in Figure 6, the wiper 41 is inserted to a certain depth into the silo 1, and when force is transmitted, the wiper moves while rotating along the wall surface of the silo 1, thereby effectively breaking down the bridging phenomenon of the powder P.

[0033] As a result, as shown in Figures 5 to 7, when installing the structure of the present invention, the vertical transmission shaft 31, vertical bevel gear 32, and horizontal bevel gear 33 of the power transmission component 3 are mainly arranged inside the gear box 23, and the power transmission to the top cover 4 and wiper 41 is performed mechanically, so that the power transmission is simplified, no complicated transmission method is required, and no vibration or noise is generated during operation. The aforementioned reduction transmission arrangement allows the powder P to move around the silo 1 while rotating in a circular path, and the kinetic energy of this movement can effectively break the bridges (or static equilibrium) of the powder P in the silo 1 and the powder passage 21 of the main body 2. At the same time, if the rotation speed of the wiper 41 is too fast, the powder P may fly up and cause a potential risk of a dust explosion, so the wiper 41 rotates slowly to keep the powder P stable and not scatter. However, since the rotational speed supplied by the gear motor 5 cannot achieve a sufficiently low speed, the vertical bevel gear 32 and the horizontal bevel gear 33 are used to further reduce the speed, thereby achieving gentle movement. This prevents the powder P from scattering, and the powder P passes through the main body 2 stably and is delivered.

[0034] In one embodiment of the present invention, the powder P generates static electricity due to contact friction between particles, which can cause the risk of dust explosion, and this is an important prevention item in the relevant workshop. Therefore, in the present invention, at least one contact 24 is installed on the main body 2, and a grounding wire 241 is connected to the contact 24, so that static electricity accumulated due to friction of the powder P is discharged through the grounding wire 24, preventing electrostatic discharge sparks caused by the accumulation of static electricity and ensuring safety during operation.

[0035] In the assembled arrangement of the power transmission component 3, the top cover 4 is located on top of the gearbox 23 as shown in FIGS. In order to prevent the powder P from remaining on the top cover 4, the top end of the top cover 4 is preferably set to have a cone shape. As a result, the powder P does not accumulate on the conical surface but on the flat surface, so that the top cover 4 complies with the hygiene standards for food processing. The cone-shaped installation guides the powder P and prevents convection of the powder P. 5 and 6 are cross-sectional views taken along the first connecting pipe 22, showing the transmission arrangement of the present invention. Therefore, although it appears that the first connecting pipe 22 blocks the cross-sectional view of the powder passage 21 of the main body 2, in reality, the first connecting pipe 22 and the gear box 23 do not completely block the powder passage 21, and as shown in Figure 7, the powder P is discharged from the powder passage 21. Regarding the installation of the horizontal transmission shaft 34, it is designed to be supported and positioned by the first connecting pipe 22, and one end is arranged to be transmissively connected to the gear motor 5, and by installing a gear motor holder 51, it is correspondingly connected and installed between the main body 2 and the gear motor 5. Thus, the gear motor holder 51 implements the positioning between the main body 2 and the gear motor 5 , and the horizontal transmission shaft 34 is installed corresponding to the gear motor holder 51 . The lateral transmission shaft is supported through a bearing 341 and is arranged to be rotatable. Moreover, the horizontal transmission shaft 34 is directly assembled or fixedly connected to the horizontal bevel gear 33 so as to synchronize and link the rotation of the horizontal bevel gear 33.

[0036] Regarding the transmission arrangement of the vertical transmission shaft 31, in one embodiment, the vertical transmission shaft 31 passes through the gear box 23, and an opening 231 is provided at the lower end of the gear box 23 to enable smooth rotation and positioning. As a result, the vertical transmission shaft 31 and the vertical bevel gear 32 can be assembled through the opening 231 at the lower end, and by installing the lower cover 35, the opening 231 at the lower end of the gear box 23 is closed, and the lower cover 35 also installs the vertical transmission shaft 31 accordingly. Moreover, in one embodiment, a key groove 321 is installed on the vertical bevel gear 32, and the vertical transmission shaft 31 is installed with a key body 312, so as to correspond to the key groove of the vertical bevel gear 32 and be transmissively connected. Moreover, a screw thread portion 313 is provided on the upper end of the vertical transmission shaft 31 and is assembled to correspond to the upper cover 4. A transmission member 314 is installed at the upper end of the vertical transmission shaft 31, and a screw groove 43 corresponding to the thread of the vertical transmission shaft 31 is installed at the lower end of the upper cover 4, and a transmission part 431 corresponding to the transmission member 314 is installed inside the screw groove 43. As a result, the vertical transmission shaft 31 rotates synchronously with the vertical transmission shaft 31 and the top cover 4, and a larger and more stable torque rotates the vertical transmission shaft 31 through the vertical bevel gear 32, linking the rotation of the top cover 4 and improving the stability of power transmission. Preferably, at least a vertical transmission shaft bearing 311 is installed at least at one location between the vertical transmission shaft 31 and the gear box 23 or between the vertical transmission shaft 31 and the bottom cover 35 so that the vertical transmission shaft 31 rotates smoothly and minimizes the effect of the pressure of the powder P on rotation. Preferably, a pair of vertical transmission shaft bearings 311 are installed at the upper and lower ends of the vertical transmission shaft 31, respectively, to support the vertical transmission shaft bearings 311 and ensure smooth and effective rotation.

[0037] Moreover, as shown in FIG. 6, when the present invention is used, it is installed at the outlet end 11 of the silo 1, so that the powder P flows into the powder passage 21 of the main body 2 through the outlet end 11. As described above, in the present invention, by driving the gear motor 5, power 4 is transmitted to the upper cover via the horizontal transmission shaft 34, the horizontal bevel gear 33, the vertical bevel gear 32, and the vertical transmission shaft 31 in that order, thereby linking the rotation of the wiper 41. During this process, the powder passage 21 of the main body 2 is filled with the powder P. Some types of powder P have very small particle sizes, which may penetrate into the mechanism and cause malfunctions or wear. Therefore, the present invention provides appropriate protective measures to prevent the penetration of powder P.

[0038] Since the top cover 4 is rotatable in the gear box 23, there is no contact area between them. Due to the structural arrangement of the present invention, there is only a minute gap between the top end of the gear box 23 and the top cover 4, and there is no risk of intrusion into other areas. In order to prevent the powder P from entering through this gap, in one embodiment, the entire upper cover 4 is placed over the upper end of the gear box 23 to provide a shield, or a sealed bearing is placed therebetween.

[0039] The present invention provides a three-layer powder ingress protection mechanism.

[0040] The first layer of protection mechanism is an air purging device 7, which has a high-pressure air pipe connector 71 installed on one side of the inner edge of the main body 2. In one embodiment, the high-pressure air pipe connector 71 is parallel to the first connecting pipe 22, and one end of the high-pressure air pipe connector 71 is connected to the gearbox 23, and the other end is located on the outer ring surface of the main body 2. As a result, the high-pressure air pipe connector 71 is externally connected to an over-compressed air source (not shown) as shown in Figures 5 and 6, and high-pressure gas is sent into the gearbox 23 through the high-pressure air pipe connector 71, creating a positive high-pressure zone within the gearbox 23. The gap between the top cover 4 and the gearbox 23 is an opening through which particulate matter can enter, creating hygiene risks and bearing damage risks. The installation of the air purge device 7 prevents powder and granular material from entering the opening. A cross-shaped hole 315 is installed on the vertical transmission shaft 31 at the relative height of the air purge device 7, and another cross-shaped hole 316 is installed at the top relative to the opening position. Moreover, a straight hole 317 is provided between the cross-shaped holes 316 and 315 at both the upper and lower ends, allowing them to communicate with each other. As shown in Figures 5 and 8, the high-pressure air flows from the lower cross-shaped hole 315 through the straight hole 317, enters the upper cross-shaped hole 316, and is ejected from the gap of the labyrinth seal 6, thereby blocking the powder P from entering the gear box 23 by high-pressure air pressure. This provides a first layer of protection, maintains the transmission state of each component of the present invention, and protects it from wear caused by the intrusion of powder P, ensuring smooth operation of the present invention and significantly extending its service life.

[0041] The second layer protection mechanism includes a labyrinth seal 6 and at least one labyrinth seal lower layer 61 located at the top annular surface of the gearbox 23 . At the lower end of the top cover 4, a labyrinth seal upper layer 62 corresponding to the labyrinth seal lower layer 61 is provided, which is formed directly by the gearbox 23 or the top cover 4 respectively. Moreover, the top cover 4 is installed to cover the upper end of the gear box 23, thereby stopping the powder P through the labyrinth seal upper layer 62 and the labyrinth seal lower layer 61, making it difficult for the powder P to penetrate or get caught between the gear box 23 and the top cover. Moreover, preferably, the labyrinth seal 6 has a concave-convex arrangement of a labyrinth seal structure between the labyrinth seal upper layer 62 and the labyrinth seal lower layer 61, which correspond to each other. As shown in Figures 2, 6 and 8, in one embodiment, the labyrinth seal upper layer 62 is annularly installed on the top annular surface of the gearbox 23 and is installed as a sawtooth groove with a concave-convex installation. The labyrinth seal lower layer 61 installed at the lower end of the top cover 4 corresponds to the toothed portion of the concave-convex configuration and corresponds to the concave-convex contour of the labyrinth seal upper layer 62, and is very close to it. With this arrangement, as shown in FIG. 8, a labyrinth-like gap is formed between the labyrinth seal upper layer 62 and the labyrinth seal lower layer 61, so that even if powder P penetrates, it is blocked or retained by the labyrinth seal upper layer 62 or the labyrinth seal lower layer 61 provided with the respective concaves and convexes, greatly increasing the difficulty of penetration. This obstructs the powder P, making the probability of the powder P penetrating very low. Thus, the present invention can ensure effective power transmission, and can improve efficiency and stability during operation without being affected by wear or adhesion due to the intrusion of powder P.

[0042] The third layer of protection is a mechanical shaft seal such as a bearing seal 8, which is installed at one end of the gearbox 23 of the vertical transmission shaft 31, thereby forming a sealing contact between the vertical transmission shaft 31 and the gearbox 23, forming the final protection means, and using a physical mechanism to reliably and effectively block powder P. This prevents powder P from entering the power transmission component 3 and ensures effective and stable operation of the present invention.

[0043] In another embodiment, as shown in FIGS. 11 and 12, the wiper 41 may be a blender blade 41' to assist in the mixing and transport of the powder P. Moreover, the stirring blade 41' has at least one assembly shaft 44 and is installed vertically upright on the upper end of the top cover 4. A plurality of blades 45 are mounted on each of the assembly shafts 44 . In one embodiment, the assembly shaft 44 can be fixed to the top cover 4 in a fixed connection manner, and the top cover 4 has a fixed connection hole 46 at its upper end. As described above, power is transmitted to the upper cover 4 through the drive of the gear motor 5 via the horizontal transmission shaft 34, the horizontal bevel gear 33, the vertical bevel gear 32, and the vertical transmission shaft 31 in that order, thereby linking the rotation of the stirring blade 41' and stirring the powder P with the blade 45. Specifically, the agitator blade 41' can be a multi-layered assembly arrangement, and in this embodiment, a plurality of assembly shafts 44 are arranged to form a multi-layered blade 45 arrangement. The different assembly shafts 44 are fixedly connected to each other through square threads, and the direction of the threads and the rotation direction of the blades 45 are opposite to each other. When the blades 45 are transmitted, they directly agitate the powder P in the silo 1, and the blades 45 in different layers have the same or different lengths or sizes.

[0044] In a specific embodiment, the assembly shaft 44 is a round rod, and has a screw hole 441 at the upper end for fixed connection, and a screw post 442 corresponding to the screw hole 441 at the lower end. As a result, the different assembly shafts 44 are screwed into each other through the screw holes 441 and the screw posts 442 and fixedly connected. The top assembly shaft 44 is fixed through a round head screw 443, and preferably, the assembly shaft 44 has a protruding block 444 with a small outer diameter at the top end of the screw hole position. The outer edge of the convex fence 444 is installed in an octagonal shape. The blades 45 are respectively placed in blade holders 451 , and the blade holders 451 are provided with holes 452 corresponding to the protruding portions 444 . The hole 452 is also octagonally arranged, so that it can be assembled corresponding to the assembly shaft 44, and can be pressed and fixed in the axial direction by assembly between the assembly shafts 44. In one embodiment, the blades 45 are arranged in a cross shape, with two opposing blades extending horizontally and the other blade 45 in the opposite direction extending upward in a V-shape. The blade face angle of each blade 45 is set at 45 degrees, and when rotated, it generates stirring and downward thrust, but this is merely an example and is not limiting, and the user can adjust the blade face angle of each blade 45 as needed. Furthermore, the arrangement of the blade holder 451 is merely an example, and therefore in this embodiment, it corresponds to the shape of the octagonal cavity 452, each of whose internal angles is 45 degrees, and the blade 45 can be positioned as needed by the user.

[0045] This installation allows for uniform and sufficient mixing when the powder P is a granular material with an uneven particle size, prevents segregation from occurring, improves the quality of the powder P being delivered, and thereby improves the quality and stability of the final finished product.

[0046] As is clear from the above description, the technical means disclosed in the present invention can effectively solve the problem of the conventional powder bridge phenomenon and achieve the expected objectives and effects. Furthermore, since the present invention had not been described in any publication prior to the filing, had not been publicly used, and possesses future inventive step, it undoubtedly qualifies as an "invention" under the Patent Act. Therefore, we are filing an application in accordance with the law, and we sincerely hope that your office will carefully examine the application and grant us permission to patent the invention.

[0047] It should be noted that the above descriptions are merely some preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent changes or modifications made based on the claims and detailed description of the invention are intended to be included in the patent scope of the invention. [Explanation of symbols]

[0048] 1 silo, 11 outlet end, 2 main body, 21 Powder passage, 22 First Liaison Pipe, 221 through hole; 23 gearbox, 231 aperture, 24 contacts, 241 Ground wire, 25 flanges, 3 power transmission components, 31 longitudinal transmission shaft, 311 Longitudinal transmission shaft bearings, 312 key body, 313 threaded part, 314 Transmission members; 315, 316 cruciform hole, 317 straight hole, 32 Longitudinal bevel gear, 321 Key tank, 33 Lateral bevel gear, 34 lateral transmission shaft, 341 Lateral transmission shaft bearings, 35 Lower lid; 351 Tightly fixed screw column, 4 Top lid; 41 wiper, 41' stirring blade, 42 rotating arms, 43 screw tank, 431 Transmission parts, 44 assembly shaft, 441 screw holes, 442 screw pillar, 443 Round head screw, 444 Convex fence, 45 blades, 451 blade holder, 452 Kong-dong, 46 fixed connection hole, 5 gear motor, 51 gear motor holder, 6 labyrinth seal, 61 Labyrinth seal lower layer, 62 Labyrinth seal upper layer, 7 Air purge device, 71 High pressure air pipe connector, 72 Second connecting pipe, 8 bearing seals, 9 pipe clamps, P powder.

Claims

1. A powder bridge breaking and stirring device is installed at an outlet end of a silo, the powder bridge breaking and stirring device comprising: a main body, a power transmission component, an upper cover, a lower cover, a wiper, and a gear motor; The main body is configured in an annular shape, thereby forming a powder passage in the center, a gear box is installed at the center of the main body, and a first connecting pipe and a second connecting pipe are installed opposite each other on the inner edge of the main body, and the gear box is fixed at the center of the main body, the first connecting pipe has a hollow tubular structure and accommodates a mechanical transmission structure, and the second connecting pipe also has a hollow tubular structure and is a passage for compressed air, The power transmission component is provided with a vertical transmission shaft, a vertical bevel gear, a horizontal bevel gear and a horizontal transmission shaft, the vertical transmission shaft passes through the gearbox correspondingly and is connected to the top cover for transmission, the vertical transmission shaft is transmission-connected to the vertical bevel gear, the horizontal transmission shaft is installed through the connecting pipe and transmission-connected to the horizontal bevel gear, and the horizontal bevel gear is meshed with the vertical bevel gear, The upper cover is installed corresponding to the upper end of the gearbox, and a wiper holder is installed on the upper cover, and the wiper is assembled to be movable corresponding to the wiper holder, and can be removed for cleaning or replacement; the gear motor is connected to the horizontal transmission shaft so as to transmit power thereto, and when it transmits power to drive the rotation of the horizontal transmission shaft, the rotation of the vertical transmission shaft is linked through the horizontal and vertical bevel gears, thereby rotating the top cover, transmitting the wiper, and performing rotary wiper movement; A gear motor holder is correspondingly connected and installed between the main body and the gear motor, and the horizontal transmission shaft is correspondingly installed in the gear motor holder. characterized in that Powder bridge breaking and stirring device.

2. The powder bridge breaking and stirring device further comprises a labyrinth seal, and at least one labyrinth seal lower layer is installed at the top annular surface of the gear box, and an upper labyrinth seal upper layer corresponding to the labyrinth seal lower layer is installed at the lower end of the upper cover, and the upper cover is installed corresponding to the upper end position of the gear box, The labyrinth seal is provided with a labyrinth-shaped concave-convex structure between the upper and lower layers. characterized in that The powder bridge breaking and stirring device according to claim 1.

3. The powder bridge breaking and stirring device further comprises an air purge device; The air purge device has a high-pressure air pipe connector installed on one side of the inner edge of the main body, one end of which is connected to the gearbox, and sends positive pressure into the gearbox through the high-pressure air pipe connector. characterized in that The powder bridge breaking and stirring device according to claim 1.

4. The powder bridge breaking and stirring device further includes a bottom cover, which is disposed corresponding to the lower end of the gearbox and closed, and the bottom cover is disposed corresponding to the vertical transmission shaft. characterized in that The powder bridge breaking and stirring device according to any one of claims 1 to 3.

5. At least one transmission shaft bearing is installed between the vertical transmission shaft and the gear box, or between the vertical transmission shaft and the bottom cover, and at least one of the horizontal transmission shafts. characterized in that The powder bridge breaking and stirring device according to claim 4.

6. The powder bridge breaking and stirring device further includes a bearing seal, and each transmission shaft bearing is provided with a bearing seal. characterized in that The powder bridge breaking and stirring device according to claim 5.

7. The upper end of the upper cover is installed in a cone shape. characterized in that The powder bridge breaking and stirring device according to any one of claims 1 to 3.

8. The upper end of the main body is selectively fitted with a flange or a pipe clamp, which is attached to the outlet end of the silo. characterized in that The powder bridge breaking and stirring device according to any one of claims 1 to 3.

9. At least one contact 24 is further provided on the outer surface of the body, and a grounding wire is connected to the contact to discharge static electricity accumulated due to friction of powder, and prevent static electricity discharge sparks caused by static electricity accumulation. characterized in that The powder bridge breaking and stirring device according to any one of claims 1 to 3.

10. The wiper is an agitating blade, and the agitating blade has at least one assembly shaft, and each assembly shaft has a plurality of blades. characterized in that The powder bridge breaking and stirring device according to any one of claims 1 to 3.

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