Airflow mixing device

Abstract

The present disclosure provides a kind of airflow mixing equipment.The airflow assembly of the above-mentioned airflow mixing equipment includes adjustable guide tube, fixed guide tube, air inlet pipe, valve and driver, the valve is rotationally sealed in the discharge port, and the driving end of the driver is drivingly connected with the valve;The air inlet pipe is arranged in the air inlet cavity of the valve, and the nozzle of the air inlet pipe at least partially protrudes into the air inlet cavity, the fixed guide tube is sleeved on the nozzle and connected to the valve, the adjustable guide tube is oppositely arranged with the fixed guide tube, the diameter of the adjustable guide tube is greater than the diameter of the fixed guide tube, and the fixed guide tube at least partially extends into the adjustable guide tube and forms a backflow channel with the adjustable guide tube, and the backflow channel is respectively communicated with the adjustable guide tube, the fixed guide tube and the cavity.The device realizes more quickly and more powerful tumbling of the powder at the bottom of the cavity, more effectively ensures the efficient circulating mixing of the powder in the cavity, and has no dead angle convection.

Description

Technical Field

[0001] This invention relates to the field of mixing technology, and in particular to an airflow mixing device. Background Technology

[0002] Conventional mechanical powder mixing equipment typically includes a metal agitator. However, for some corrosive materials, this agitation can easily occur, leading to lubricant leakage and powder contamination. Furthermore, mechanical powder mixing equipment can cause rapid heating of the mixed materials, thus affecting their performance.

[0003] To address the aforementioned technical issues, a new type of airflow mixing equipment has emerged in the market. Since airflow mixing equipment has no metal stirring devices, it effectively solves many of the shortcomings of mechanical mixing equipment and is therefore widely used.

[0004] However, in actual use, because the air inlet pipe of the airflow mixing device is inserted directly from the side of the bottom of the mixing tank, there is a mixing blind zone at the bottom of the airflow mixing device, which results in poor mixing effect. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an airflow mixing device with efficient mixing, compact structure, and nozzle that is not easily clogged, featuring bottom and center air intake, no dead-angle convection, and bottom-center air intake.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] An airflow mixing device includes a mixing tank, a backflushing assembly, a filtering assembly, a negative pressure vacuum assembly, and an airflow assembly. The mixing tank has an inlet, an outlet, a cavity, and a negative pressure port. The inlet, outlet, and negative pressure port are connected to the cavity. The negative pressure port is connected to the negative pressure vacuum assembly. The outlet is located at the bottom of the mixing tank. The filtering assembly is disposed within the mixing tank and communicates with the cavity. The backflushing assembly is disposed adjacent to the filtering assembly and is used to blow off powder adhering to the filtering assembly.

[0008] The airflow assembly includes an adjustable guide pipe, a fixed guide pipe, an inlet pipe, a valve, and a driver. The valve is rotatably sealed within the outlet, and the driver's drive end is connected to the valve. The inlet pipe is disposed within the inlet chamber of the valve, and the nozzle of the inlet pipe at least partially protrudes from the inlet chamber. The fixed guide pipe is sleeved on the nozzle and connected to the valve. The adjustable guide pipe is disposed opposite to the fixed guide pipe, and the diameter of the adjustable guide pipe is larger than that of the fixed guide pipe. The fixed guide pipe at least partially extends into the adjustable guide pipe and forms a return channel with the adjustable guide pipe. The return channel communicates with the adjustable guide pipe, the fixed guide pipe, and the cavity, respectively.

[0009] In one embodiment, the valve includes a valve seat and a sealing plate. The valve seat is detachably disposed on the side wall of the discharge port. An installation cavity is formed in the valve seat and communicates with the discharge port. The sealing plate is rotatably sealed in the installation cavity. An air inlet cavity is formed in the sealing plate. The driving end of the actuator is rotatably connected to the sealing plate.

[0010] In one embodiment, the sealing plate includes an air capsule plate body and a rotating shaft. The rotating shaft is rotatably disposed on the air capsule plate body and forms the air inlet chamber. The side of the air inlet chamber facing the chamber body has an air outlet. The air inlet pipe includes a main air inlet pipe and the nozzle connected to it. The main air inlet pipe is disposed in the air inlet chamber. The nozzle protrudes from the air outlet and is connected to the main air inlet pipe. The fixed guide pipe is connected to the air capsule plate body.

[0011] In one embodiment, the air outlet is located in the middle of the air capsule plate.

[0012] In one embodiment, the cavity is funnel-shaped, and the discharge port is located at the bottom of the funnel shape.

[0013] In one embodiment, the adjustable guide tube includes a tube body, a fixed plate, and an adjusting plate connected together. The fixed plate is disposed on the side wall of one side of the cavity. The fixed plate is connected to the tube body through the adjusting plate. The adjusting plate is used to adjust the vertical height of the tube body in the cavity. The tube body is disposed opposite to the fixed guide tube.

[0014] In one embodiment, the adjustable guide tube further includes a locking member, the adjusting plate has an adjusting groove, the fixing plate has a threaded hole, and the locking member passes through the adjusting groove and the threaded hole in sequence and is screwed into the threaded hole.

[0015] In one embodiment, there are multiple threaded holes, which are arranged sequentially along the length of the fixing plate.

[0016] In one embodiment, the adjustment groove is a waist-shaped groove.

[0017] In one embodiment, the driver is a motor or a rotary cylinder.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] Because the valve rotation seal is located inside the discharge port, and the drive end of the actuator is connected to the valve drive, the actuator can drive the valve to open or close. Furthermore, because the air inlet pipe is located inside the air inlet chamber of the valve, and the nozzle of the air inlet pipe at least partially protrudes from the air inlet chamber, the air inlet pipe can be embedded in the valve and located at the bottom of the mixing tank. This achieves bottom air intake and ensures that the air inlet pipe can rotate with the valve, thereby changing the opening direction of the nozzle. Because the fixed guide pipe is sleeved on the nozzle and connected to the valve, the fixed guide pipe can effectively concentrate the gas at the nozzle, effectively increasing the driving force of the bottom gas, achieving faster and more powerful turbulence of the powder at the bottom of the chamber, and more effectively ensuring efficient circulation and mixing of the powder within the chamber without dead-angle convection. Additionally, because the adjustable guide pipe is arranged opposite to the fixed guide pipe, the diameter of the adjustable guide pipe... The diameter of the fixed guide tube is greater than that of the adjustable guide tube, and the fixed guide tube extends at least partially into the adjustable guide tube, so that the fixed guide tube can form a return channel at the inlet end of the adjustable guide tube. The return channel is connected to the adjustable guide tube, the fixed guide tube, and the cavity, respectively, ensuring that the gas coming out of the fixed guide tube can be completely gathered at the inlet end of the adjustable guide tube. This allows the gas coming out of the fixed guide tube to fully drive the powder at the bottom of the mixing tank to flow upward, forming a fluidized mixing state. Most of the powder will fall to the bottom of the cavity under the action of gravity, and the fallen powder will be sucked into the adjustable guide tube by the return channel for recirculation under the action of airflow. In this way, the powder can achieve efficient circulation mixing in the cavity without dead corner convection, thereby ensuring efficient and comprehensive mixing of the powder and effectively avoiding the existence of mixing blind spots at the bottom of the airflow mixing equipment, which would result in poor mixing effect.

[0020] The addition of a negative pressure vacuum component and a filter component ensures that the filter component effectively prevents powder leakage during operation, allowing only gas inside the cavity to pass through. This facilitates exhaust from the cavity and ensures that the air pressure inside the cavity remains within a relatively stable and safe range. This effectively prevents safety issues caused by excessive air pressure during the mixing process of the airflow mixing equipment. The added backflushing component blows powder adhering to the filter component down to the bottom of the cavity, where it then enters the return channel for cyclic mixing. This effectively prevents powder from adhering to the filter component and causing powder loss. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an airflow mixing device according to an embodiment of the present invention in one direction;

[0023] Figure 2 for Figure 1 A cross-sectional view of the airflow mixing device shown in one direction;

[0024] Figure 3 for Figure 2 Enlarged view of point A shown in the image;

[0025] Figure 4 This is a diagram showing the airflow state during mixing in an airflow mixing device according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of an airflow mixing device in one direction during material discharge according to an embodiment of the present invention.

[0027] Reference numerals: 10, airflow mixing device; 100, mixing tank; 110, feed inlet; 120, discharge outlet; 130, cavity; 140, negative pressure port; 200, backflushing assembly; 300, filter assembly; 400, airflow assembly; 410, adjustable guide pipe; 411, pipe body; 412, fixed plate; 413, adjusting plate; 4131, adjusting groove; 420, fixed guide pipe; 430, air inlet pipe; 431, main air inlet pipe; 432, nozzle; 440, valve; 441, valve seat; 4411, first fixed flange; 4412, second fixed flange; 4413, valve body; 442, sealing plate; 4421, air capsule plate; 4422, rotating shaft; 4423, air inlet chamber; 4423a, air outlet; 450, driver; 460, return channel; 500, preset gap; 600. Preset overlapping area. Specific Implementation

[0029] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] This disclosure provides an airflow mixing device including a mixing tank, a backflushing assembly, a filtering assembly, a negative pressure vacuum assembly, and an airflow assembly. The mixing tank contains an inlet, an outlet, a cavity, and a negative pressure port. The inlet, outlet, and negative pressure port are connected to the cavity. The negative pressure port is connected to the negative pressure vacuum assembly. The outlet is located at the bottom of the mixing tank. The filtering assembly is disposed within the mixing tank and communicates with the cavity. The backflushing assembly is disposed adjacent to the filtering assembly and is used to blow off powder adhering to the filtering assembly. The airflow assembly includes an adjustable guide pipe, a fixed guide pipe, an inlet pipe, a valve, and a driver. The valve is rotary sealed inside the discharge port, and the drive end of the driver is driven and connected to the valve. The air inlet pipe is disposed inside the air inlet chamber of the valve, and the nozzle of the air inlet pipe at least partially protrudes from the air inlet chamber. The fixed guide pipe is sleeved on the nozzle and connected to the valve. The adjustable guide pipe is disposed opposite to the fixed guide pipe. The diameter of the adjustable guide pipe is larger than the diameter of the fixed guide pipe, and the fixed guide pipe at least partially extends into the adjustable guide pipe and forms a return channel with the adjustable guide pipe. The return channel communicates with the adjustable guide pipe, the fixed guide pipe and the cavity respectively.

[0033] In the aforementioned airflow mixing device, the valve is rotaryly sealed within the discharge port, and the drive end of the actuator is connected to the valve drive, enabling the actuator to open or close the valve. Furthermore, the air inlet pipe is located within the air inlet chamber of the valve, and the nozzle of the air inlet pipe at least partially protrudes from the air inlet chamber, allowing the air inlet pipe to be embedded in the valve and positioned at the bottom of the mixing tank. This achieves bottom air intake and ensures that the air inlet pipe rotates with the valve, thereby changing the opening direction of the nozzle. Because the fixed guide pipe is sleeved on the nozzle and connected to the valve, it effectively concentrates the gas at the nozzle, increasing the driving force of the bottom gas and enabling faster and more powerful turbulence of the powder at the bottom of the chamber. This ensures efficient circulation and mixing of the powder within the chamber without dead-angle convection. Additionally, because the adjustable guide pipe is positioned opposite the fixed guide pipe, the adjustable guide pipe... The diameter of the flow tube is larger than that of the fixed flow tube, and the fixed flow tube extends at least partially into the adjustable flow tube, so that the fixed flow tube can form a return channel at the inlet end of the adjustable flow tube. The return channel is connected to the adjustable flow tube, the fixed flow tube, and the cavity, respectively, ensuring that the gas coming out of the fixed flow tube can be completely gathered at the inlet end of the adjustable flow tube. This allows the gas coming out of the fixed flow tube to fully drive the powder at the bottom of the mixing tank to flow upward, forming a fluidized mixing state. Most of the powder will fall to the bottom of the cavity under the action of gravity, and the fallen powder will be sucked into the adjustable flow tube by the return channel for recirculation under the action of airflow. In this way, the powder can achieve efficient circulation mixing in the cavity without dead corner convection, thereby ensuring efficient and comprehensive mixing of the powder and effectively avoiding poor mixing effect caused by the existence of mixing blind spots at the bottom of the airflow mixing equipment. Furthermore, due to the addition of the negative pressure vacuum component and the filter component, when the negative pressure vacuum component is working, the filter component effectively prevents powder leakage and only allows gas inside the cavity to pass through, thereby achieving exhaust of the cavity and ensuring that the air pressure inside the cavity can be maintained within a relatively stable and safe range. This effectively avoids safety issues caused by excessive air pressure during the mixing process of the airflow mixing equipment. The added backflushing component can blow the powder adhering to the filter component down into the bottom of the cavity, and then enter the return channel from the bottom of the cavity for circulation mixing, effectively preventing powder from adhering to the filter component and causing powder loss.

[0034] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0035] like Figures 1 to 3As shown, an embodiment of an airflow mixing device 10 includes a mixing tank 100, a backflushing assembly 200, a filter assembly 300, a negative pressure vacuum assembly, and an airflow assembly 400. The mixing tank 100 has an inlet 110, an outlet 120, a cavity 130, and a negative pressure port 140. The inlet 110, outlet 120, and negative pressure port 140 are connected to the cavity 130. The negative pressure port 140 is connected to the negative pressure vacuum assembly. The outlet 120 is located at the bottom of the mixing tank 100. The filter assembly 300 is disposed within the mixing tank 100 and communicates with the cavity 130. The backflushing assembly 200 is disposed adjacent to the filter assembly 300 and is used to blow off powder adhering to the filter assembly 300. The airflow assembly 400 includes an adjustable guide pipe 410, a fixed guide pipe 420, and an air inlet pipe 430. A valve 440 and an actuator 450 are provided. The valve 440 is rotatably and sealingly disposed within the discharge port 120. The driving end of the actuator 450 is drivenly connected to the valve 440. An air inlet pipe 430 is disposed within the air inlet chamber 4423 of the valve 440, and the nozzle 432 of the air inlet pipe 430 at least partially protrudes from the air inlet chamber 4423. A fixed guide pipe 420 is sleeved on the nozzle 432 and connected to the valve 440. An adjustable guide pipe 410 is disposed opposite to the fixed guide pipe 420. The diameter of the adjustable guide pipe is larger than the diameter of the fixed guide pipe 420, and the fixed guide pipe 420 at least partially extends into the adjustable guide pipe, forming a return channel 460 with the adjustable guide pipe. The return channel 460 communicates with the adjustable guide pipe 410, the fixed guide pipe 420, and the cavity 130.

[0036] It is understood that, since the mixing tank 100 has an inlet 110, an outlet 120, a cavity 130, and a negative pressure port 140 respectively, and the inlet 110, the outlet 120, and the negative pressure port 140 are respectively connected to the cavity 130, when the negative pressure port 140 is connected to the negative pressure vacuum assembly, the negative pressure vacuum assembly can extract the gas inside the cavity 130 to ensure that the mixing tank 100 can maintain a negative pressure so that the inlet 110 can draw in various different powders into the cavity 130 respectively. Since the valve 440 is rotaryly sealed in the outlet 120, the driving end of the driver 450 is connected to the valve 440. The actuator 450 can drive the valve 440 to open or close. Since the air inlet pipe 430 is located within the air inlet chamber 4423 of the valve 440, and the nozzle 432 of the air inlet pipe 430 at least partially protrudes from the air inlet chamber 4423, the air inlet pipe 430 can be embedded in the valve 440 and located at the bottom of the mixing tank 100. This achieves bottom air intake and ensures that the air inlet pipe 430 can rotate with the valve 440, thereby changing the opening direction of the nozzle 432. Because the fixed guide pipe 420 is sleeved on the nozzle 432 and connected to the valve 440, the fixed guide... The pipe 420 effectively concentrates the gas at the nozzle 432, increasing the driving force of the gas at the bottom and enabling faster and more powerful turbulence of the powder at the bottom of the cavity 130. This ensures efficient circulation and mixing of the powder within the cavity 130 without dead-angle convection. Furthermore, since the adjustable guide pipe 410 is positioned opposite the fixed guide pipe 420, and the diameter of the adjustable guide pipe is larger than that of the fixed guide pipe 420, with the fixed guide pipe 420 extending at least partially into the adjustable guide pipe 410, a backflow can be formed at the inlet end of the adjustable guide pipe 410. The return channel 460 is connected to the adjustable guide pipe 410, the fixed guide pipe 420, and the cavity 130, respectively. This ensures that all the gas coming out of the fixed guide pipe 420 can be collected at the inlet end of the adjustable guide pipe 410, allowing the gas from the fixed guide pipe 420 to fully drive the powder at the bottom of the mixing tank 100 upwards, forming a fluidized mixing state. Most of the powder will fall to the bottom of the cavity 130 under the action of gravity, and the fallen powder will be sucked into the adjustable guide pipe 410 by the return channel 460 for recirculation. For details, please refer to [link to relevant documentation]. Figure 4 This allows the powder to achieve efficient circulation and mixing within the cavity 130, with no dead zones in the convection, thus ensuring efficient and comprehensive mixing of the powder and effectively avoiding poor mixing results caused by the presence of mixing blind zones at the bottom of the airflow mixing device 10.

[0037] It is understandable that, due to the addition of the negative pressure vacuum component and the filter component 300, when the negative pressure vacuum component is working, the filter component 300 effectively blocks the leakage of powder and only allows the gas inside the cavity 130 to pass through, thereby realizing the exhaust of the cavity 130. This ensures that the air pressure inside the cavity 130 can be maintained within a relatively stable and safe range, effectively avoiding safety problems caused by excessive air pressure during the mixing process of the airflow mixing device 10. The added backflushing component 200 can blow the powder adhering to the filter component 300 down into the bottom of the cavity 130, and then enter the return channel 460 from the bottom of the cavity 130 for circulation mixing, effectively preventing the powder from adhering to the filter component 300 and causing powder loss.

[0038] It should also be noted that the sealing valves 440 of the traditional air inlet pipe 430 and discharge port 120 are separately installed, meaning that an additional air inlet is required inside the mixing tank 100. However, the mixing tank 100 has high requirements for sealing performance. Therefore, a sealing ring is usually added to the air inlet to achieve a better sealing effect and thus better ensure the sealing performance of the mixing tank 100. However, since the air inlet pipe 430 is usually located on one side wall at the bottom of the mixing tank 100, the gas coming out of the air inlet pipe 430 needs to be horizontally dispersed before it can push the powder upward. This effectively weakens the upward tumbling force of the gas pushing the powder, meaning that it cannot effectively push the powder to tumble upward quickly, resulting in poor mixing effect.

[0039] To address the aforementioned technical issues, some manufacturers have adjusted the tilt angle of the air inlet pipe 430 so that the nozzle 432 of the air inlet pipe 430 opens upwards. This ensures that the gas exiting the nozzle 432 of the air inlet pipe 430 can directly and rapidly push the powder upwards, achieving faster powder turbulence. However, since the air inlet pipe 430 is fixedly connected to the side wall and the nozzle 432 is set upwards, when the mixed powder needs to be discharged, a small portion of the powder can easily fall into the opening of the nozzle 432. This can cause the nozzle 432 to become clogged, affecting its use, and also result in powder loss, which can be particularly significant for valuable pharmaceuticals or health products.

[0040] Therefore, to solve the above problems, this disclosure directly sets the air inlet pipe 430 inside the air inlet chamber 4423 of the valve 440, so that the air inlet pipe 430 can rotate with the valve 440. When it is necessary to mix the powder, the user can drive the driver 450 to drive the valve 440 to seal the discharge port 120, so that the opening of the nozzle 432 of the air inlet pipe 430 is vertically upward, ensuring that the gas coming out of the nozzle 432 of the air inlet pipe 430 can quickly push the powder to achieve rapid tumbling of the powder. Furthermore, since the air inlet pipe 430 is set at the discharge port... The gas exiting nozzle 432 allows for seamless convection of the powder within the cavity 130, ensuring efficient and thorough mixing. After mixing, the user can activate the actuator 450 to open valve 440. At this point, the opening of nozzle 432 in the air inlet pipe 430 is perpendicular to the discharge direction. This effectively prevents powder from directly entering the nozzle 432 and causing blockages, reducing powder loss and thus minimizing overall material usage. This is particularly suitable for applications involving valuable pharmaceuticals or health products. Furthermore, the fixed guide pipe 420, fitted onto nozzle 432, provides excellent protection, effectively preventing powder from falling directly into the nozzle and causing blockages.

[0041] Furthermore, to prevent the fixed guide pipe 420 from clogging the powder, when the material is emptied, the user can restart the air inlet valve of the air inlet pipe 430. This helps to remove the powder clogging the nozzle 432 and also blows off the powder adhering to the fixed guide pipe 420, thereby further reducing the amount of powder loss.

[0042] For operating principles, please refer to [link / reference]. Figure 4 and Figure 5 The actuator 450 drives the valve 440 to rotate, causing the valve 440 to seal the outlet 120. At this time, the nozzle 432 of the air inlet pipe 430 opens vertically upward. Then, the negative pressure vacuum component is activated, and the valve of the feed inlet 110 is opened simultaneously, so that the cavity 130 can maintain negative pressure, thereby allowing various different powders to be drawn into the cavity 130 respectively. When the powder is adsorbed to the preset material level, the valve of the feed inlet 110 is closed, the air inlet valve of the air inlet pipe 430 is opened, and the backflushing component 20 is activated. 0. Start air intake through air inlet pipe 430. Backflush component 200 performs air backflush, allowing the gas to continuously mix the powder at the bottom of cavity 130. When the mixing reaches the predetermined time, close backflush component, negative pressure vacuum component and air inlet pipe 430. At this time, drive 450 drives valve 440 to rotate and open to achieve material discharge. When the powder in cavity 130 is emptied, drive 450 drives valve 440 to seal discharge port 120 to prepare for the next cycle operation.

[0043] like Figure 2 and Figure 3As shown, in one embodiment, the valve 440 includes a valve seat 441 and a sealing plate 442. The valve seat 441 is detachably disposed on the side wall of the discharge port 120. An installation cavity is formed in the valve seat 441, and the installation cavity communicates with the discharge port 120. The sealing plate 442 is rotatably sealed in the installation cavity. An air inlet cavity 4423 is formed in the sealing plate 442. The driving end of the actuator 450 is rotatably connected to the sealing plate 442.

[0044] It is understandable that the valve seat 441 is detachably mounted on the side wall of the discharge port 120, allowing for easy disassembly and replacement by the user, thus facilitating the replacement of damaged valve 440 and effectively saving maintenance costs. Furthermore, the valve seat 441 has an installation cavity that can accommodate the sealing plate 442, enabling communication between the installation cavity and the discharge port 120 for easy material discharge. Since the sealing plate 442 is rotatably sealed within the installation cavity, and the drive end of the actuator 450 is rotatably connected to the sealing plate 442, the actuator 450 can drive the sealing plate 442 to rotate, thereby sealing and closing the installation cavity to complete the sealing or opening of the cavity 130. Furthermore, since the air inlet chamber 4423 is formed within the sealing plate 442, the air inlet pipe 430 can be accommodated within the air inlet chamber 4423. This allows the air inlet pipe 430 to be embedded in the valve 440 in a compact manner. The air inlet pipe 430 can rotate with the rotation of the sealing plate 442, thereby changing the opening direction of the nozzle 432. That is, when mixing, the opening direction of the nozzle 432 is vertically upward to ensure that the gas coming out of the nozzle 432 has good turbulence. When discharging, the opening direction of the nozzle 432 is perpendicular to the discharge direction, effectively preventing the phenomenon of powder clogging the nozzle 432.

[0045] like Figure 2 and Figure 3 As shown, in one embodiment, the valve seat 441 includes a first fixed flange 4411, a second fixed flange 4412, and a valve body 4413. The first fixed flange 4411 is sleeved on the outer peripheral wall of the discharge port 120. The second fixed flange 4412 is threadedly connected to the first fixed flange 4411, and a clamping cavity is formed between the second fixed flange 4412 and the first fixed flange 4411. The valve body 4413 is disposed in the clamping cavity and abuts and seals against the first fixed flange 4411 and the second fixed flange 4412 respectively. The valve body 4413 is provided with the mounting cavity to realize the detachable arrangement of the valve seat 441 and the side wall of the discharge port 120, which facilitates the user to disassemble and replace the damaged valve body 4413, thereby saving maintenance costs.

[0046] like Figure 2 and Figure 3As shown, in one embodiment, the sealing plate 442 includes an air capsule plate 4421 and a rotating shaft 4422. The rotating shaft 4422 is rotatably disposed on the air capsule plate 4421, thereby driving the air capsule plate 4421 to rotate. Since the rotating shaft 4422 forms the air inlet chamber 4423, the side of the air inlet chamber 4423 facing the cavity 130 has an air outlet 4423a. The air inlet pipe 430 includes a connected main air inlet pipe 431 and the nozzle 432. The main air inlet pipe 431 is provided with... Inside the air inlet chamber 4423, the nozzle 432 protrudes from the air outlet 4423a and is connected to the main air inlet pipe 431, so that the gas on the main air inlet pipe 431 can be ejected from the nozzle 432 and enter the cavity 130. The fixed guide pipe 420 is connected to the air capsule plate 4421, so that the fixed guide pipe 420 can be fixed on the air capsule plate 4421, thereby achieving the effect of concentrating the gas at the nozzle 432, so as to ensure that the gas from the nozzle 432 can more quickly and powerfully tumble the powder at the bottom of the cavity 130.

[0047] It is understandable that since the intake pipe 430 is directly embedded in the sealing plate 442, fluctuations in the air pressure of the intake pipe 430 can easily cause the sealing plate 442 to shake, affecting its sealing performance. Therefore, in one embodiment, the rotating shaft 4422 is a metal rotating shaft 4422, and the rotating shaft 4422 is disposed through the sealing plate 442. In this way, the metal rotating shaft 4422 can increase the overall weight of the sealing plate 442, reduce the probability of the sealing plate 442 shaking during air intake, and thus improve the sealing performance and stability of the sealing plate 442 during air intake.

[0048] In one embodiment, the gas capsule plate 4421 includes a metal frame and a gas capsule sealing ring. The rotating shaft 4422 is disposed through the metal frame. One side of the metal frame has an installation port, which communicates with the air outlet 4423a, so that the nozzle 432 can be embedded in the installation port and the air outlet 4423a, thereby connecting and fixing the main air inlet pipe 431 to the metal frame. The fixed guide pipe 420 is sleeved on the nozzle 432 and connected to the metal frame, so that the fixed guide pipe 420 can be connected to the metal frame and can achieve the air gathering effect, ensuring that the gas from the nozzle 432 can more quickly and powerfully agitate the powder in the cavity 130 to achieve efficient mixing. Furthermore, since the gas capsule sealing ring is sleeved on the metal frame and seals the inner wall of the outlet 120, the gas capsule sealing ring seals the inner wall of the outlet 120. In addition, since the air capsule sealing ring needs to be inflated and sealed every time it is used, the air capsule sealing ring can effectively seal the inner wall of the outlet 120, thus ensuring the sealing performance of the sealing plate 442.

[0049] It is worth mentioning that if the intake pipe 430 is embedded in a plastic seal or a metal seal, the plastic seal is easy to shake during air intake due to its light weight, thus affecting its sealing performance. Metal seals, due to their inherently poor sealing performance, still exhibit poor sealing during air intake. Therefore, in this disclosure, by using the metal rotating shaft 4422, the metal frame, and the air capsule sealing ring in combination, while ensuring that the intake pipe 430 can provide a large airflow to the cavity 130, thereby achieving faster and more powerful turbulence of the powder inside the cavity 130, it also effectively reduces the probability of the sealing plate 442 shaking during air intake, further improving the sealing performance of the sealing plate 442. It also helps to improve the connection strength between the metal frame and the fixed guide pipe 420, effectively preventing the fixed guide pipe 420 from easily falling off during continuous air intake.

[0050] It is understandable that because the gas pressure from the nozzle 432 is relatively high, the fixed guide tube 420 is prone to detachment during prolonged continuous air intake. Therefore, in one embodiment, the fixed guide tube 420 and the metal frame are integrally formed, and the fixed guide tube 420 is also a metal part. This not only improves the weight of the sealing plate 442 and more effectively ensures the reliable stability and sealing of the sealing plate 442 during air intake, but also improves the connection strength between the fixed guide tube 420 and the metal frame, effectively preventing the fixed guide tube 420 from detaching during air intake, thus ensuring the air gathering effect of the fixed guide tube 420.

[0051] like Figure 2 and Figure 3 As shown, in one embodiment, the valve body 4413 has a first connecting portion and a second connecting portion formed at both ends, and a rotating shaft 4422 is respectively disposed through the first connecting portion and the second connecting portion. The rotating shaft 4422 located in the first connecting portion is connected to the driving end of the driver 450 to realize the driving connection of the driver 450 to the rotating shaft 4422. The rotating shaft 4422 located in the second connecting portion has an air inlet chamber 4423, and the air inlet chamber 4423 extends to the rotating shaft 4422 located in the sealing plate 442. The air outlet 4423a of the air inlet chamber 4423 is located in the middle of the sealing plate 442, so that the air inlet pipe 430 can be located in the middle of the sealing plate 442, ensuring bottom air intake.

[0052] In one embodiment, the fixed guide tube 420 extends into the adjustable guide tube 410 to form a preset overlap area 600. It is understood that if the length of the fixed guide tube 420 extending into the adjustable guide tube 410 is too long, it will affect the rotation of the valve 440, causing the valve 440 to easily jam during rotation, making it difficult to control the maximum opening angle of the valve 440, thus affecting the discharge efficiency. Furthermore, it will hinder the return flow of powder at the bottom of the cavity 130, leaving a mixing blind zone. Therefore, by setting the fixed guide tube 420 to extend into the adjustable guide tube 410 to form a preset overlap area 600, while ensuring flexible control of the valve 440's opening angle, it also ensures that the return channel 460 can more quickly and comprehensively return the powder at the bottom of the cavity 130, achieving efficient circulating mixing and convection without dead zones.

[0053] In one embodiment, the preset overlap area 600 is 0.mm to 10cm to ensure that the fixed guide tube 420 extends into the adjustable guide tube 410 to form the preset overlap area 600. In a preferred embodiment, the preset overlap area 600 is 8.5mm.

[0054] In one embodiment, a preset gap 500 is formed between the adjustable guide tube 410 and the valve 440 to ensure that the return channel 460 is located at the bottom of the cavity 130 in a suitable position, thereby achieving a seamless convection of powder at the bottom of the cavity 130 and a highly efficient mixing effect.

[0055] In one embodiment, the preset gap 500 is 1cm to 50cm.

[0056] In one embodiment, the diameter ratio of the fixed guide tube 420 to the adjustable guide tube 410 is 2:3, so that the fixed guide tube 420 and the adjustable guide tube form a return channel 460 in a suitable manner. In particular, with the use of the preset gap 500 between the adjustable guide tube 410 and the valve 440, and the fixed guide tube 420 extending into the adjustable guide tube 410 to form a preset overlap area 600, the return channel 460 can achieve a dead-angle convection of powder at the bottom of the cavity 130 and a highly efficient mixing effect.

[0057] In one embodiment, the air pressure in the air intake pipe 430 is 0.6MPa to 1.0MPa, and the nozzle 432 blows alternately every 0.1 seconds to achieve continuous air supply.

[0058] In one embodiment, the powder occupies 0.6 of the effective volume of the cavity 130 to maximize the amount of powder contained, thereby ensuring the highest amount of powder mixed in a single cycle. In another embodiment, the extension direction of the air intake pipe 431 is perpendicular to the extension direction of the nozzle 432, so that when the sealing plate 442 is sealed, the opening of the nozzle 432 is vertically upward, ensuring that the gas coming out of the nozzle 432 can more quickly and powerfully agitate the powder at the bottom of the cavity 130, and more effectively guarantee the efficient circulation and mixing of the powder in the cavity 130 without dead-angle convection.

[0059] like Figure 2 and Figure 3 As shown, in one embodiment, the air outlet 4423a is located in the middle of the air capsule plate 4421 to ensure that the nozzles 432 can be distributed in the middle of the air capsule plate 4421. This ensures that the gas from the nozzles 432 can be distributed more evenly in the cavity 130, and also ensures the stability of the air capsule plate 4421 during air intake, making it less prone to shaking, thereby ensuring that the air capsule plate 4421 has good sealing performance.

[0060] In one embodiment, the cavity 130 is funnel-shaped, and the outlet 120 is located at the bottom of the funnel shape to ensure that a good flow rate difference can be formed from the top to the bottom of the cavity 130, thereby realizing the rapid circulation and return of powder in the cavity 130.

[0061] like Figure 2 and Figure 3 As shown, in one embodiment, the adjustable guide tube 410 includes a tube body 411, a fixing plate 412, and an adjusting plate 413 connected together. The fixing plate 412 is disposed on the side wall of one side of the cavity 130. The fixing plate 412 is connected to the tube body 411 through the adjusting plate 413, thereby achieving a connection and fixation between the tube body 411 and the fixing plate 412. The adjusting plate 413 is used to adjust the vertical height of the tube body 411 within the cavity 130 to adapt to the mixing requirements of different types of powders, thereby improving airflow. The mixing device 10 is applicable because the pipe body 411 is arranged opposite to the fixed guide pipe 420, so that the inlet end of the pipe body 411 can form a return channel 460 with the fixed guide pipe 420. In this way, a fixed plate 412 and an adjusting plate 413 are added only on one side of the cavity 130. On the one hand, the adjusting guide pipe can be adjusted to meet the mixing requirements of different types of powders. On the other hand, the resistance of the fixed plate 412 and the adjusting plate 413 to the airflow during mixing is effectively reduced, ensuring that the powder in the cavity 130 can be quickly returned and circulated.

[0062] To reduce the airflow resistance of the fixed plate 412 and the adjusting plate 413, in one embodiment, both the fixed plate 412 and the adjusting plate 413 are vertically arranged inside the cavity 130, such that the width of the fixed plate 412 is located on the horizontal plane of the cavity 130, and the length of the fixed plate 412 is located on the vertical plane of the cavity 130. That is, the length of the fixed plate 412 is parallel to the airflow direction, and the width of the fixed plate 412 is perpendicular to the airflow direction. In this way, the area of ​​the fixed plate 412 on the horizontal plane of the cavity 130 is kept small, thereby ensuring that the fixed plate 412 and the adjusting plate 413 resist the airflow during mixing, and ensuring that the powder in the cavity 130 can quickly circulate back.

[0063] In one embodiment, the width-to-length ratio of the fixed plate 412 and / or the adjusting plate 413 is (0.1~0.3)~(1~10). This ensures that the width-to-length ratio of the fixed plate 412 and the adjusting plate 413 is appropriate, effectively avoiding deformation during long-term use while satisfying the supporting function. It also ensures that the fixed plate 412 and the adjusting plate 413 reduce the resistance to airflow during mixing, thus ensuring that the powder in the cavity 130 can quickly circulate back.

[0064] In one embodiment, the adjustable guide tube 410 further includes a locking member. The adjusting plate 413 has an adjusting groove 4131, and the fixing plate 412 has a threaded hole. The locking member passes through the adjusting groove 4131 and the threaded hole in sequence and is screwed into the threaded hole. It can be understood that when adjustment is needed, the user can loosen the locking member, move the adjusting plate 413 to the desired position, and finally tighten the locking member to adjust the vertical height of the guide tube within the cavity 130.

[0065] In one embodiment, there are multiple threaded holes arranged sequentially along the length of the fixing plate 412. These additional threaded holes provide various installation positions for the locking components, allowing users to choose flexibly according to their needs, thus improving the flexibility of the locking component installation. Furthermore, users can increase the number of locking components as needed to enhance the connection strength between the fixing plate 412 and the adjusting plate 413, thereby ensuring that the fixing plate 412 and the adjusting plate 413 are less likely to detach during prolonged use.

[0066] In one embodiment, the adjustment groove 4131 is an oblong groove, which allows the user to move quickly and flexibly, thus enabling rapid adjustment of the adjustment plate 413.

[0067] In one embodiment, the actuator 450 is an electric motor or a rotary cylinder to drive the valve 440.

[0068] Compared with the prior art, the present invention has at least the following advantages:

[0069] Since the valve 440 is rotary sealed within the discharge port 120, and the drive end of the actuator 450 is driven by the valve 440, the actuator 450 can drive the valve 440 to open or close. Furthermore, since the air inlet pipe 430 is located within the air inlet chamber 4423 of the valve 440, and the nozzle 432 of the air inlet pipe 430 at least partially protrudes from the air inlet chamber 4423, the air inlet pipe 430 can be embedded in the valve 440 and located at the bottom of the mixing tank 100. Thus, [the following is achieved / implemented]... The bottom air intake is ensured, and the air intake pipe 430 can rotate with the valve 440, thereby changing the opening direction of the nozzle 432. Because the fixed guide pipe 420 is sleeved on the nozzle 432 and connected to the valve 440, the fixed guide pipe 420 can effectively concentrate the gas at the nozzle 432, effectively increasing the driving force of the bottom gas, achieving faster and more powerful tumbling of the powder at the bottom of the cavity 130, and more effectively ensuring the efficient circulation and mixing of the powder in the cavity 130. Furthermore, there is no dead-angle convection. Since the adjustable guide pipe 410 and the fixed guide pipe 420 are arranged opposite each other, the diameter of the adjustable guide pipe 410 is larger than the diameter of the fixed guide pipe 420, and the fixed guide pipe 420 extends at least partially into the adjustable guide pipe 410. This allows the fixed guide pipe 420 to form a return channel 460 at the inlet end of the adjustable guide pipe 410. The return channel 460 is connected to both the adjustable guide pipe 410 and the fixed guide pipe 420. The connection between the fixed guide pipe 420 and the cavity 130 ensures that all the gas coming out of the fixed guide pipe 420 can be collected at the inlet end of the adjustable guide pipe 410. This allows the gas coming out of the fixed guide pipe 420 to fully drive the powder at the bottom of the mixing tank 100 upwards, forming a fluidized mixing state. Most of the powder will fall to the bottom of the cavity 130 under the action of gravity, and the fallen powder will be sucked into the adjustable guide pipe 410 by the return channel 460 for recirculation. For details, please refer to [link to relevant documentation]. Figure 4 This allows the powder to achieve efficient circulation and mixing within the cavity 130, with no dead zones in the convection, thus ensuring efficient and comprehensive mixing of the powder and effectively avoiding poor mixing results caused by the presence of mixing blind zones at the bottom of the airflow mixing device 10.

[0070] 2. Due to the addition of the negative pressure vacuum component and the filter component 300, when the negative pressure vacuum component is working, the filter component 300 effectively blocks the leakage of powder and only allows the gas inside the cavity 130 to pass through, thereby realizing the exhaust of the cavity 130. This ensures that the air pressure inside the cavity 130 can be maintained within a relatively stable and safe range, effectively avoiding safety problems caused by excessive air pressure during the mixing process of the airflow mixing device 10. The added backflushing component 200 can blow the powder adhering to the filter component 300 down into the bottom of the cavity 130, and then enter the return channel 460 from the bottom of the cavity 130 for circulation mixing, effectively preventing the powder from adhering to the filter component 300 and causing powder loss.

[0071] The embodiments described above are merely illustrative of several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An airflow mixing device, comprising a mixing tank, a backflushing assembly, a filtering assembly, a negative pressure vacuum assembly, and an airflow assembly, wherein the mixing tank has an inlet, an outlet, a cavity, and a negative pressure port respectively formed therein, the inlet, the outlet, and the negative pressure port are respectively connected to the cavity, the negative pressure port is connected to the negative pressure vacuum assembly, the outlet is located at the bottom of the mixing tank, the filtering assembly is disposed in the mixing tank and connected to the cavity, the backflushing assembly is disposed adjacent to the filtering assembly, and the backflushing assembly is used to blow off powder adhering to the filtering assembly, characterized in that... The airflow assembly includes an adjustable guide pipe, a fixed guide pipe, an inlet pipe, a valve, and a driver. The valve is rotatably sealed within the outlet, and the driver's drive end is connected to the valve. The inlet pipe is disposed within the inlet chamber of the valve, and the nozzle of the inlet pipe at least partially protrudes from the inlet chamber. The fixed guide pipe is sleeved on the nozzle and connected to the valve. The adjustable guide pipe is disposed opposite to the fixed guide pipe, and the diameter of the adjustable guide pipe is larger than that of the fixed guide pipe. The fixed guide pipe at least partially extends into the adjustable guide pipe and forms a return channel with the adjustable guide pipe. The return channel communicates with the adjustable guide pipe, the fixed guide pipe, and the cavity, respectively.

2. The airflow mixing device according to claim 1, characterized in that, The valve includes a valve seat and a sealing plate. The valve seat is detachably disposed on the side wall of the discharge port. An installation cavity is formed inside the valve seat and is connected to the discharge port. The sealing plate is rotatably sealed in the installation cavity. An air inlet cavity is formed inside the sealing plate. The driving end of the actuator is rotatably connected to the sealing plate.

3. The airflow mixing device according to claim 2, characterized in that, The sealing plate includes an air capsule plate and a rotating shaft. The rotating shaft is rotatably disposed on the air capsule plate and forms the air inlet chamber. The side of the air inlet chamber facing the chamber has an air outlet. The air inlet pipe includes a main air inlet pipe and the nozzle connected to it. The main air inlet pipe is disposed in the air inlet chamber. The nozzle protrudes from the air outlet and is connected to the main air inlet pipe. The fixed guide pipe is connected to the air capsule plate.

4. The airflow mixing device according to claim 3, characterized in that, The air outlet is located in the middle of the air capsule plate.

5. The airflow mixing device according to claim 1, characterized in that, The cavity is funnel-shaped, and the discharge port is located at the bottom of the funnel shape.

6. The airflow mixing device according to any one of claims 1 to 5, characterized in that, The adjustable guide tube includes a tube body, a fixed plate, and an adjusting plate connected together. The fixed plate is disposed on the side wall of one side of the cavity. The fixed plate is connected to the tube body through the adjusting plate. The adjusting plate is used to adjust the vertical height of the tube body in the cavity. The tube body and the fixed guide tube are disposed opposite to each other.

7. The airflow mixing device according to claim 6, characterized in that, The adjustable guide tube also includes a locking component. The adjusting plate has an adjusting groove, and the fixing plate has a threaded hole. The locking component passes through the adjusting groove and the threaded hole in sequence and is screwed into the threaded hole.

8. The airflow mixing device according to claim 7, characterized in that, The number of threaded holes is multiple, and the multiple threaded holes are arranged sequentially along the length direction of the fixing plate.

9. The airflow mixing device according to claim 7, characterized in that, The adjusting groove is a waist-shaped groove.

10. The airflow mixing device according to claim 1, characterized in that, The driver is a motor or a rotary cylinder.

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