High-pressure fluidizing stirring mechanism and dry-type stirrer

Abstract

The high-pressure fluidization stirring mechanism and the dry-method stirring machine provided by the embodiment of the application relate to the technical field of dry-method stirring machines, and the high-pressure fluidization stirring mechanism comprises: a stirring paddle assembly for dispersing powder in a tank body; a scraper assembly comprising a scraper, the scraper being arranged on one side of the stirring paddle assembly, the scraper having a flow channel and at least one air blowing port, the flow channel being in fluid communication with each air blowing port, and the air blowing port being arranged on the side of the scraper away from the stirring paddle assembly; and a fluidization assembly comprising a gas supply channel, the gas supply channel being in fluid communication with the flow channel, and the gas supply channel being used for conveying compressed gas to the flow channel, so that the compressed gas flows out of the air blowing port and blows up the powder located at a dead angle position between the scraper and the tank body. The embodiment of the application can avoid the accumulation of powder at the dead angle position between the scraper and the tank body, and solve the problem that part of the powder at the dead angle position between the scraper and the tank body cannot be fully contacted with the stirring paddle assembly.

Description

Technical Field

[0001] This application relates to the field of dry mixer technology, and in particular to a high-pressure fluidized mixing mechanism and a dry mixer. Background Technology

[0002] In related technologies, during the high-speed mixing of pure powder in a dry mixer, some powder may enter the dead corner between the scraper and the tank, preventing this part of the powder from making full contact with the dispersing paddle, which can easily lead to some abnormalities in the finished powder product. Utility Model Content

[0003] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a high-pressure fluidized mixing mechanism and a dry mixer, which fluidizes the powder located in the dead corner between the scraper and the tank by blowing it up, that is, making it flow in the tank, so that the powder entering the dead corner between the scraper and the tank can fully contact the mixing paddle assembly.

[0004] An embodiment of the first aspect of this application provides a high-pressure fluidizing stirring mechanism, comprising:

[0005] Agitator assembly for installation into the tank;

[0006] A scraper assembly includes a scraper disposed on one side of the agitator assembly. The scraper has a flow channel and at least one air outlet. The flow channel is in fluid communication with each of the air outlets. The air outlets are located on the side of the scraper facing away from the agitator assembly.

[0007] A fluidizing assembly includes an air supply channel in fluid communication with the flow channel, the air supply channel being used to supply compressed gas to the flow channel so that the compressed gas flows out from the air outlet and blows up the powder.

[0008] Furthermore, the air inlet has multiple outlets, which are spaced apart along the length of the scraper.

[0009] Furthermore, the length direction of the scraper is parallel to the vertical direction, and the distance between two adjacent air outlets gradually decreases along the vertically downward direction.

[0010] Furthermore, each of the air inlets extends along the length of the scraper.

[0011] Furthermore, the fluidization assembly includes a speed control valve, a connecting pipe, and a pressure regulating valve. The output end of the speed control valve is connected to the flow channel. One end of the connecting pipe is connected to the input end of the speed control valve, and the other end of the connecting pipe is connected to the output end of the pressure regulating valve. The input end of the pressure regulating valve is used to connect to a gas supply device. The pressure regulating valve is used to regulate the gas pressure in the connecting pipe, and the speed control valve is used to regulate the gas flow rate in the flow channel.

[0012] Furthermore, it also includes a temperature sensor, which is installed at one end of the scraper and is used to detect the temperature inside the tank.

[0013] Furthermore, it also includes a pressure relief assembly, which includes a pneumatic ball valve and a breather, the breather being connected to the tank body via the pneumatic ball valve.

[0014] Furthermore, the pressure relief assembly includes a vibrator connected to the respirator, the vibrator being used to drive the respirator to vibrate.

[0015] Furthermore, the stirring paddle assembly includes a drive shaft, a fixed paddle, and a movable paddle. The fixed paddle and the movable paddle are installed on the drive shaft at intervals, and the fixed paddle is located below the movable paddle. The movable paddle includes a fastener and a movable paddle body. The movable paddle body is provided with a fastening through hole. The fastener is threadedly connected to the fastening through hole, and one end of the fastener abuts against the drive shaft.

[0016] An embodiment of the second aspect of this application provides a dry mixer, including a tank and a high-pressure fluidizing mixing mechanism as described above, wherein the tank has a receiving cavity, the scraper is disposed in the receiving cavity, and one side of the scraper abuts against the cavity wall of the receiving cavity.

[0017] As can be seen from the above technical solutions, the embodiments of this application have at least the following beneficial effects:

[0018] The high-pressure fluidized mixing mechanism and dry mixer provided in this application embodiment can disperse the powder in the tank through the mixing paddle assembly. A scraper is provided inside the tank to remove powder from the tank wall. The scraper has an air nozzle; compressed gas is blown from the air nozzle to lift powder located in the dead corner between the scraper and the tank, allowing the powder to flow within the tank. This ensures sufficient contact between the powder in the tank and the mixing paddle assembly, enabling the assembly to fully disperse the powder and preventing powder accumulation in the dead corner between the scraper and the tank. This solves the problem of some powder not being able to fully contact the mixing paddle assembly in the dead corner, thus helping to ensure powder quality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram showing the dead angle position when the scraper and the tank body are in contact in a dry mixer;

[0021] Figure 2 This is a front view schematic diagram of a high-pressure fluidizing stirring mechanism provided in one embodiment of this application;

[0022] Figure 3 This is a top view schematic diagram of a high-pressure fluidizing stirring mechanism provided in one embodiment of this application;

[0023] Figure 4 This is a schematic diagram showing the arrangement of air holes in the scraper of a high-pressure fluidized mixing mechanism provided in one embodiment of this application.

[0024] Figure label:

[0025] 1. Tank body; 2. Dead corner areas;

[0026] 100. Agitator assembly; 110. Fixed agitator; 120. Movable agitator;

[0027] 210. Scraper; 211. Scraper body; 212. PTFE scraper; 213. Air inlet;

[0028] 310. Speed ​​control valve; 320. Connecting pipe; 330. Pressure regulating valve; 340. On / off solenoid valve;

[0029] 400. Temperature sensor;

[0030] 510. Respirator. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] See Figure 1As shown, powder tends to accumulate in the dead corner 2 between the tank 1 and the scraper 210, preventing the powder from fully contacting and dispersing with the mixing paddle, which can affect the dispersion effect of the powder.

[0033] In view of this, the first aspect of this application discloses a high-pressure fluidized mixing mechanism, which provides an air blowing hole in the scraper 210 to allow compressed gas to flow out from the air blowing hole to blow up the powder located in the dead corner position 2, so that the powder flows in the channel inside the tank 1, which is conducive to the powder in this part coming into full contact with the mixing paddle assembly.

[0034] The following will combine Figures 1 to 4 The high-pressure fluidizing stirring mechanism disclosed in the first aspect of this application will be specifically explained and described.

[0035] like Figures 1 to 4 As shown, an embodiment of the first aspect of this application discloses a high-pressure fluidizing mixing mechanism, including a mixing paddle assembly 100, a scraper assembly, and a fluidizing assembly.

[0036] Specifically, the stirring paddle assembly 100 is installed inside the tank 1 to disperse the powder inside the tank 1; the scraper assembly includes a scraper 210, which is disposed on one side of the stirring paddle assembly 100. The scraper 210 has a flow channel and at least one air outlet 213. The flow channel is in fluid communication with each air outlet 213, and the air outlet 213 is located on the side of the scraper 210 facing away from the stirring paddle assembly 100; the fluidization assembly includes an air supply channel, which is in fluid communication with the flow channel. The air supply channel is used to supply compressed gas to the flow channel so that the compressed gas flows out from the air outlet 213 and blows up the powder around the scraper 210.

[0037] The air inlet 213 is located on the side of the scraper 210 facing away from the agitator assembly 100, so that the air inlet 213 can face the dead corner position 2 between the scraper 210 and the tank 1, and also avoids the high-pressure gas flowing out from the air inlet 213 from interfering with the movement trajectory of the powder in contact with the agitator assembly 100.

[0038] It is worth understanding that compressed gas can be compressed nitrogen, compressed air, or other stable gases that do not react with powder.

[0039] It is worth mentioning that, in the embodiments of this application, high pressure refers to the gas pressure of the compressed gas being greater than the gas pressure inside the tank 1.

[0040] In the high-pressure fluidized mixing mechanism provided in this application embodiment, the powder in the tank 1 can be dispersed by the mixing paddle assembly 100. Simultaneously, a scraper 210 is provided inside the tank 1 to scrape away the powder from the tank 1 cavity wall. The scraper 210 is also equipped with an air outlet 213. By blowing compressed gas through the air outlet 213, the powder located in the dead corner 2 between the scraper 210 and the tank 1 can be blown away, allowing the powder to flow within the tank 1. This facilitates sufficient contact between the powder in the tank 1 and the mixing paddle assembly 100, enabling the mixing paddle assembly 100 to fully disperse the powder. It avoids the accumulation of powder in the dead corner 2 between the scraper 210 and the tank 1, solving the problem that some powder in the dead corner 2 cannot fully contact the mixing paddle assembly 100, thus helping to ensure the quality of the powder.

[0041] It is worth noting that in this embodiment, the tank 1 is rotated to make the tank 1 move relative to the scraper 210.

[0042] In one embodiment, see Figure 4 The air blowing port 213 is multiplied and distributed at intervals along the length direction of the scraper 210. The length direction of the scraper 210 is parallel to the Z direction.

[0043] In practical applications, by introducing compressed gas into the flow channel, the compressed gas flows along the flow channel to each air blowing port 213 and exits from each air blowing port 213, which can blow up the powder around the scraper 210, reducing the accumulation of powder in the dead corner 2 between the scraper 210 and the canister 1. Multiple air blowing ports 213 are arranged at intervals along the length direction of the scraper 210, that is, along the Z direction, which can expand the blowing range and allow the powder to flow fully.

[0044] Figure 4 A schematic diagram of the arrangement of air inlets 213 on the scraper 210 in one embodiment is shown, where h represents the distance between two adjacent air inlets 213.

[0045] See Figure 4 The length direction of the scraper 210 is parallel to the vertical direction. Along the vertically downward direction, the spacing between two adjacent air nozzles 213 gradually decreases. That is, the air nozzles 213 at the lower end of the scraper 210 are more densely packed than those at the upper end. Since the lower end of the scraper 210 contacts the bottom wall of the tank 1, reducing the spacing of the air nozzles 213 near the bottom wall of the tank 1 makes the air nozzles 213 more densely packed, ensuring that the powder near the bottom of the tank 1 has sufficient gas for fluidization.

[0046] It is worth understanding that in the aforementioned embodiments, fluidization refers to the flow of powder within the tank 1.

[0047] In one embodiment, please continue to see Figure 4 Each air outlet 213 extends along the length of the scraper 210, which increases the air volume of the air outlet 213 and thus ensures the blowing effect of the powder.

[0048] In this embodiment, see Figure 2 The scraper 210 includes a scraper body 211 and a PTFE (Polytetrafluoroethylene) scraper 212, which is used to contact the interior of the tank 1. The PTFE scraper 212 is made of PTFE material. PTFE has an extremely low coefficient of friction and strong anti-adhesion properties, meaning that other substances are difficult to adhere to its surface.

[0049] In one embodiment, see Figure 2 and Figure 3 The fluidization assembly includes a speed control valve 310, a connecting pipe 320, and a pressure regulating valve 330. The output end of the speed control valve 310 is connected to the flow channel. One end of the connecting pipe 320 is connected to the input end of the speed control valve 310, and the other end of the connecting pipe 320 is connected to the output end of the pressure regulating valve 330. The input end of the pressure regulating valve 330 is used to connect to the air supply device. The pressure regulating valve 330 is used to regulate the air pressure within the connecting pipe 320, and the speed control valve 310 is used to regulate the gas flow rate within the flow channel. In practical applications, the pressure of the gas at the air outlet 213 is adjusted by regulating the air pressure within the connecting pipe 320 using the pressure regulating valve 330; the gas flow rate at the air outlet 213 is adjusted by regulating the gas flow rate within the flow channel using the speed control valve 310. Thus, by adjusting the pressure regulating valve 330 and the speed regulating valve 310, the air pressure and velocity at the air outlet 213 can be adjusted, ensuring that the fluidizing gas does not affect the original trajectory of the powder.

[0050] In the above embodiments, the gas supply device is used to provide compressed gas to the air outlet 213. The gas supply device can be an external gas source or a device capable of generating compressed gas.

[0051] In this embodiment, see Figure 2 and Figure 3 The fluidization assembly includes an on / off solenoid valve 340, the output of which is connected to the input of a pressure regulating valve 330, and the input of which is connected to a gas supply device. The on / off solenoid valve 340 controls the opening and closing of the gas supply channel.

[0052] In one embodiment, see Figure 2 and Figure 3The high-pressure fluidized mixing mechanism includes a temperature sensor 400, which is installed at one end of the scraper 210. The temperature sensor 400 is used to detect the temperature inside the tank 1. In this embodiment, by installing the temperature sensor 400 at one end of the scraper 210, the functions of the scraper 210, blowing, and temperature measurement can be combined, reducing the number of parts in contact with the powder inside the tank 1 and helping to ensure the direction of rotation and movement trajectory of the powder during the mixing process.

[0053] When compressed gas is blown out of the air inlet 213, the air pressure inside the tank 1 rises, resulting in a positive pressure state. Therefore, it is necessary to depressurize the tank 1.

[0054] In this embodiment, see Figure 2 and Figure 3 The high-pressure fluidized mixing mechanism includes a pressure relief component, which comprises a pneumatic ball valve and a breather 510. The breather 510 is connected to the tank 1 via the pneumatic ball valve. When the air pressure inside the tank 1 rises to the working air pressure threshold of the pneumatic ball valve, the pneumatic ball valve opens under the action of air pressure, allowing the breather 510 to connect with the inside of the tank 1 and with the outside. Therefore, the gas inside the tank 1 can flow out through the breather 510, thereby achieving the function of pressure relief. When the air pressure inside the tank 1 drops back to normal air pressure, the pneumatic ball valve closes.

[0055] It is understandable that during the depressurization process, some powder will adhere to the filter element inside the respirator 510, and this powder will accumulate on the filter element as working time increases. Therefore, it is necessary to clean the powder adhering to the filter element of the respirator 510 regularly.

[0056] In one embodiment, please continue to see Figure 2 and Figure 3 The pressure relief assembly includes a vibrator connected to the respirator 510, which drives the respirator 510 to vibrate. The respirator 510 includes a filter element. By vibrating the respirator 510, powder adhering to the filter element can be shaken off, thus cleaning the filter element of the respirator 510.

[0057] In one embodiment, see Figure 2 The stirring paddle assembly 100 includes a drive shaft, a fixed paddle 110, and a movable paddle 120. The fixed paddle 110 and the movable paddle 120 are spaced apart on the drive shaft, with the fixed paddle 110 located below the movable paddle 120. The movable paddle 120 includes a fastener and a movable paddle body. The movable paddle body has a fastening through hole, and the fastener is threaded into the fastening through hole, with one end of the fastener abutting against the drive shaft. Specifically, the drive shaft can drive the fixed paddle 110 and the movable paddle 120 to rotate. The fixed paddle 110 and the movable paddle 120 disperse the powder by contacting it.

[0058] In the above embodiment, the position of the movable paddle 120 can be adjusted accordingly based on the position of the air outlet 213 to prevent the gas blown from the air outlet 213 from affecting the normal movement trajectory of the powder. Specifically, by loosening the fasteners, the movable paddle body can move relative to the drive shaft. After the position adjustment is completed, the movable paddle body is fixed relative to the drive shaft by the fasteners, thereby achieving the purpose of adjusting the position of the movable paddle 120.

[0059] An embodiment of the second aspect of this application discloses a dry mixer, including a tank 1 and a high-pressure fluidized mixing mechanism as described above, wherein the tank 1 has a receiving cavity, a scraper 210 is disposed in the receiving cavity, and one side of the scraper 210 abuts against the cavity wall of the receiving cavity.

[0060] It is worth understanding that the embodiments of the second aspect of this application have all the technical effects of the aforementioned high-pressure fluidizing stirring mechanism, which will not be repeated here.

[0061] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0062] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0063] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0064] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0065] It should be understood that although the steps in the flowcharts of the accompanying figures are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the accompanying figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

Claims

1. A high-pressure fluidizing stirring mechanism, characterized in that, include: Agitator assembly for installation into the tank; A scraper assembly includes a scraper disposed on one side of the agitator assembly. The scraper has a flow channel and at least one air outlet. The flow channel is in fluid communication with each of the air outlets. The air outlets are located on the side of the scraper facing away from the agitator assembly. A fluidizing assembly includes an air supply channel in fluid communication with the flow channel, the air supply channel being used to supply compressed gas to the flow channel so that the compressed gas flows out from the air outlet and blows up the powder.

2. The high-pressure fluidizing stirring mechanism according to claim 1, characterized in that, The air inlet is multiple, and the multiple air inlets are spaced apart along the length direction of the scraper.

3. The high-pressure fluidizing stirring mechanism according to claim 2, characterized in that, The length direction of the scraper is parallel to the vertical direction, and the distance between two adjacent air outlets gradually decreases along the vertical downward direction.

4. The high-pressure fluidizing stirring mechanism according to any one of claims 1 to 3, characterized in that, Each of the air inlets extends along the length of the scraper.

5. The high-pressure fluidizing stirring mechanism according to claim 1, characterized in that, The fluidization assembly includes a speed control valve, a connecting pipe, and a pressure regulating valve. The output end of the speed control valve is connected to the flow channel. One end of the connecting pipe is connected to the input end of the speed control valve, and the other end of the connecting pipe is connected to the output end of the pressure regulating valve. The input end of the pressure regulating valve is used to connect to a gas supply device. The pressure regulating valve is used to regulate the gas pressure in the connecting pipe, and the speed control valve is used to regulate the gas flow rate in the flow channel.

6. The high-pressure fluidizing stirring mechanism according to claim 5, characterized in that, It also includes a temperature sensor, which is installed at one end of the scraper and is used to detect the temperature inside the tank.

7. The high-pressure fluidizing stirring mechanism according to claim 1, characterized in that, It also includes a pressure relief assembly, which includes a pneumatic ball valve and a breather, the breather being connected to the tank body via the pneumatic ball valve.

8. The high-pressure fluidizing stirring mechanism according to claim 7, characterized in that, The pressure relief assembly includes a vibrator connected to the respirator, which drives the respirator to vibrate.

9. The high-pressure fluidizing stirring mechanism according to claim 1, characterized in that, The stirring paddle assembly includes a drive shaft, a fixed paddle, and a movable paddle. The fixed paddle and the movable paddle are installed on the drive shaft at intervals, and the fixed paddle is located below the movable paddle. The movable paddle includes a fastener and a movable paddle body. The movable paddle body is provided with a fastening through hole. The fastener is threadedly connected to the fastening through hole, and one end of the fastener abuts against the drive shaft.

10. A dry mixer, characterized in that, The device includes a tank and a high-pressure fluidizing agitator as described in any one of claims 1 to 9, wherein the tank has a receiving cavity, the scraper is disposed within the receiving cavity, and one side of the scraper abuts against the cavity wall of the receiving cavity.

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