Airflow mixing method for simultaneously mixing multiple powders

Abstract

This disclosure provides an airflow mixing method for simultaneously mixing multiple powders. The method uses an airflow mixer to mix multiple powders. The mixing tank of the mixing device has multiple horizontal blowing mounting holes communicating with the mixing chamber. These holes are located near the bottom of the mixing chamber and surround it. The mixing device also includes a horizontal blowing mechanism comprising multiple horizontal blowing components. The air outlets of these components are installed one-to-one within the horizontal blowing mounting holes, ensuring communication between the outlets and the mixing chamber. The air jet direction of the horizontal blowing components is either horizontal or inclined downwards. The method includes: conveying multiple powders into the mixing chamber; alternately blowing air through the inclined blowing mechanism and the horizontal blowing mechanism, while simultaneously using multiple sets of back-blowing components for alternating back-blowing; and driving a conical plug upwards via an upward driving mechanism to discharge material from the lower end of the mixing tank. This avoids the problem of blind spots in the mixing chamber and improves the uniformity of the mixing.

Description

Technical Field

[0001] This disclosure relates to the technical field of airflow mixing, and in particular to an airflow mixing method for simultaneously mixing multiple powders. Background Technology

[0002] Mechanical powder mixing equipment has an internal stirring device. When mixing corrosive materials, the stirring device is easily worn and corroded. Direct contact between the stirring device and the material may result in lubricant contamination of the material. The stirring device has disadvantages such as complex and cumbersome structure, insufficient mixing capacity, high energy consumption, and rapid heating of the mixed material.

[0003] To avoid the drawbacks of mechanical powder mixing equipment, airflow mixing equipment is generally used for mixing multiple powders. Airflow mixing equipment has no mechanical stirring devices, thus eliminating wear and corrosion, frictional heat, and lubricant contamination. Airflow mixing equipment effectively solves many of the shortcomings of mechanical mixing equipment, and is therefore widely used.

[0004] In related technologies, the airflow mixing equipment has a platform plug at the bottom. After the platform plug is lifted and opened, some powder accumulates on the platform plug, resulting in incomplete discharge.

[0005] To solve the problem of incomplete material discharge, the platform plug is usually replaced with a conical plug. When the conical plug is opened, the powder on the surface of the conical plug will fall along the conical surface of the conical plug, so that all the powder on the surface of the conical plug is discharged, such as the airflow mixer disclosed in document number CN107597000A.

[0006] It should be noted that, after diligently performing the inventiveness search of this solution, the following technical documents are also provided for reference:

[0007] 1. CN206715843U - Airflow Mixer;

[0008] 2. CN113559756A - A positive pressure pulse airflow mixer;

[0009] 3. CN212188890U - A pulse-type airflow mixer.

[0010] However, in the technical solutions disclosed in the aforementioned relevant technical documents, the airflow enters from the bottom of the mixing chamber. In order to ensure the sealing effect of the conical plug, a certain distance needs to be maintained between the lower edge of the conical plug and the air inlet. Since the air inlet sprays air upwards, the gas sprayed from the air inlet cannot reach the lower edge of the conical plug, that is, there is a mixing blind zone at the bottom corner, resulting in uneven mixing at the bottom corner of the mixing chamber. Summary of the Invention

[0011] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide an airflow mixing method for simultaneously mixing multiple powders without mixing blind spots and with relatively uniform mixing.

[0012] The purpose of this disclosure is achieved through the following technical solution:

[0013] An airflow mixing method for simultaneously mixing multiple powders, wherein the multiple powders are mixed using an airflow mixer, the airflow mixer comprising:

[0014] A mixing device includes a mixing tank and an inclined blowing mechanism. The mixing tank forms a mixing chamber and has multiple inclined blowing mounting through holes arranged around the bottom of the mixing chamber. The inclined blowing mechanism includes multiple inclined blowing components, and the air outlets of the multiple inclined blowing components are installed one-to-one in the multiple inclined blowing mounting through holes, so that the air outlets of the inclined blowing components are connected to the mixing chamber. The air jet direction of the inclined blowing components is inclined upward.

[0015] A negative pressure conveying device is installed at the upper end of the mixing tank and is connected to the mixing chamber. The negative pressure conveying device contains multiple filter cartridges, each with its opening facing upwards.

[0016] The backflush device has multiple backflush pipes disposed within the negative pressure conveying device. The air outlets of the multiple backflush pipes are respectively arranged to correspond one-to-one with the openings of the multiple filter cartridges. The multiple backflush pipes together form multiple sets of the backflush components.

[0017] The mixing tank is characterized by having multiple horizontal blowing mounting through holes arranged around the bottom of the mixing chamber; the mixing device further includes a horizontal blowing mechanism, which includes multiple horizontal blowing components, the air outlets of the multiple horizontal blowing components being installed in the multiple horizontal blowing mounting through holes one by one, so that the air outlets of the horizontal blowing components are connected to the mixing chamber, and the air jet direction of the horizontal blowing components is set horizontally or inclined downward.

[0018] The airflow mixing method for simultaneously mixing multiple powders includes the following steps:

[0019] S100: Convey multiple powders into the mixing chamber;

[0020] S300: Air is alternately ejected through the oblique blowing mechanism and the horizontal blowing mechanism, while simultaneously back-blowing is alternately achieved through multiple sets of the back-blowing components.

[0021] In one embodiment, the plurality of filter cartridges include a plurality of oblique-blowing turbulence filter cartridges and a plurality of cross-blowing turbulence filter cartridges, wherein the plurality of oblique-blowing turbulence filter cartridges are arranged vertically in correspondence with the plurality of oblique-blowing components, and the plurality of cross-blowing turbulence filter cartridges are arranged vertically in correspondence with the plurality of cross-blowing components.

[0022] Multiple backflush pipes together form two sets of backflush components: an oblique-blowing turbulence backflush component and a transverse-blowing turbulence backflush component. The oblique-blowing turbulence backflush component includes multiple backflush pipes, and the air outlets of the multiple backflush pipes of the oblique-blowing turbulence backflush component are arranged one-to-one with the openings of the multiple oblique-blowing turbulence filter cartridges. The transverse-blowing turbulence backflush component includes multiple backflush pipes, and the air outlets of the multiple backflush pipes of the transverse-blowing turbulence backflush component are arranged one-to-one with the openings of the multiple transverse-blowing turbulence filter cartridges.

[0023] In one embodiment, S300 includes:

[0024] S301: Air is ejected through multiple oblique blowing components and backflushed through multiple backflush pipes of the oblique blowing turbulence backflush components;

[0025] S303: Air is ejected through multiple of the said cross-blowing components, and back-blowing is performed through multiple back-blowing pipes of the said cross-blowing turbulence back-blowing component;

[0026] S305: S301 and S303 are performed alternately in sequence.

[0027] In one embodiment, in S301, the multiple backflush pipes of the oblique blow turbulence backflush assembly are all intermittent jets.

[0028] In one embodiment, in S301, the multiple backflush pipes of the oblique blow turbulence backflush assembly alternately spray air.

[0029] In one embodiment, in S303, the multiple backflush pipes of the cross-blowing turbulence backflush assembly are all intermittent jets.

[0030] In one embodiment, in S303, the multiple backflush pipes of the cross-blowing turbulence backflush assembly alternately spray air.

[0031] In one embodiment, the cross-blowing assembly and the oblique-blowing assembly are alternately spaced in the circumferential direction of the mixing chamber.

[0032] In one embodiment, the oblique blowing assembly includes:

[0033] An angled blow nozzle, the first end of which is installed in the angled blow mounting through hole, the angled blow nozzle having an angled blow channel and a movable channel, the angled blow channel being connected to the movable channel, and an air inlet being provided on the outer side of the angled blow nozzle, the air inlet being connected to the movable channel;

[0034] A switch driver is mounted on the second end of the oblique blow nozzle. The power output shaft of the switch driver movably passes through the movable channel, and a gap exists between the power output shaft of the switch driver and the inner wall of the movable channel.

[0035] A blocking component is located within the movable channel. The blocking component is also connected to the power output shaft of the switch driver. There is a gap between the blocking component and the inner wall of the movable channel. The switch driver is used to drive the blocking component to block or open the oblique blowing channel. When the blocking component opens the oblique blowing channel, the air inlet, the movable channel, and the oblique blowing channel are connected in sequence.

[0036] In one embodiment, the oblique blowing assembly further includes an air intake pipe connected to the air inlet.

[0037] Compared with the prior art, this disclosure has at least the following advantages:

[0038] The mixing chamber utilizes alternating jetting from both oblique and horizontal blowing mechanisms. The oblique blowing mechanism causes the gas within the mixing chamber to churn, effectively mixing powder outside the bottom corners. The horizontal blowing mechanism, on the other hand, reaches the bottom corners of the mixing chamber, ensuring proper mixing of the powder there and preventing blind spots, thus improving mixing uniformity. Furthermore, the alternating jetting of the oblique and horizontal blowing mechanisms, coupled with multiple sets of back-blowing components, creates turbulence within the mixing chamber, resulting in more diverse airflow directions and further enhancing mixing uniformity. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the structure of an airflow mixer according to one embodiment;

[0041] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the airflow mixer along line AA.

[0042] Figure 3 for Figure 2 The diagram shown is an enlarged view of the airflow mixer at point B.

[0043] Figure 4 for Figure 1 A partial structural schematic diagram of the airflow mixer shown;

[0044] Figure 5 for Figure 4 The diagram shows an enlarged view of the airflow mixer at point C.

[0045] Figure 6 for Figure 1 The diagram shows the structure of the airflow mixer from another perspective;

[0046] Figure 7 for Figure 6 The diagram shows a cross-sectional view of the airflow mixer along line DD.

[0047] Figure 8 for Figure 7 The diagram shows an enlarged view of the airflow mixer at point E.

[0048] Figure 9 for Figure 1 The airflow diagram of the aforementioned airflow mixer;

[0049] Figure 10 for Figure 1 Another airflow diagram of the airflow mixer shown;

[0050] Figure 11 for Figure 1 This is another partial structural schematic diagram of the airflow mixer shown.

[0051] Reference numerals: airflow mixer 10; mixing device 100; mixing tank 100a; powder mixing tank body 110; mixing chamber 101; feed inlet 111; oblique blowing mounting through hole 112; horizontal blowing mounting through hole 113; conical plug 120; lifting drive mechanism 130; oblique blowing mechanism 100b; oblique blowing assembly 140; oblique blowing nozzle 141; oblique blowing channel 1411; movable channel 1412; air inlet 1413; switch drive component 142; sealing component 143; air inlet pipe 144; horizontal blowing mechanism 100c; horizontal blowing assembly 150; negative pressure conveying device 200; conveying tank 210; mounting plate 220; filter cartridge 230; oblique blowing turbulence filter cartridge 231; horizontal blowing turbulence filter cartridge 232; back-blowing device 300; oblique blowing turbulence back-blowing assembly 310; horizontal blowing turbulence back-blowing assembly 320; back-blowing pipe 301. Detailed Implementation

[0052] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable the reader to gain a more thorough and complete understanding of the contents of this disclosure.

[0053] 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 possible implementation.

[0054] 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 disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0055] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0056] like Figures 1 to 3 As shown, an embodiment of the airflow mixer 10 includes a mixing device 100, a negative pressure conveying device 200, and a backflushing device 300. The mixing device 100 includes a mixing tank 100a and an inclined blowing mechanism 100b. The mixing tank 100a forms a mixing chamber 101 and is also provided with a plurality of feed inlets 111. The feed inlets 111 are connected to the mixing chamber 101. Various powders enter the mixing chamber 101 through the plurality of feed inlets 111. The mixing tank 100a is provided with a plurality of inclined blowing mounting through holes 112 arranged around the bottom of the mixing chamber 101. That is, the mixing tank 100a is provided with a plurality of inclined blowing mounting through holes 112, and the plurality of inclined blowing mounting through holes 112 are all arranged near the bottom of the mixing chamber 101 and are also arranged around the mixing chamber 101. The inclined blowing mechanism 100b includes multiple inclined blowing components 140. The air outlets of the multiple inclined blowing components 140 are installed one-to-one in multiple inclined blowing mounting through holes 112, so that the air outlets of the inclined blowing components 140 are connected to the mixing chamber 101. The air jet direction of the inclined blowing components 140 is inclined upward. When the inclined blowing components 140 spray air, the gas sprayed by the inclined blowing components 140 is inclined upward and directed towards the conical plug 120, causing the powder in the mixing chamber 101 to tumble, so as to achieve the effect of mixing multiple powders. The negative pressure conveying device 200 is installed at the upper end of the mixing tank 100a. The negative pressure conveying device 200 is connected to the mixing chamber 101. Multiple filter cartridges 230 are arranged inside the negative pressure conveying device 200, and the opening of each filter cartridge 230 is oriented upward.

[0057] like Figure 4 and Figure 5As shown, the backflushing device 300 further includes multiple backflushing pipes 301 disposed within the negative pressure conveying device 200. The air outlets of the multiple backflushing pipes 301 are correspondingly disposed to the openings of the multiple filter cartridges 230. The multiple backflushing pipes 301 together form multiple sets of backflushing components. When each backflushing pipe 301 backflushes, the surface of the corresponding filter cartridge 230 will release air, causing the powder on the surface of the corresponding filter cartridge 230 to fall off, thereby preventing the filter cartridge 230 from becoming clogged, and thus ensuring that the mixing chamber 101 can exhaust air through the filter cartridge 230.

[0058] like Figures 6 to 8 As shown, the mixing tank 100a further includes multiple horizontal blowing mounting through holes 113 arranged around the bottom of the mixing chamber 101. That is, the mixing tank 100a also has multiple horizontal blowing mounting through holes 113 communicating with the mixing chamber 101. These multiple horizontal blowing mounting through holes 113 are all located near the bottom of the mixing chamber 101 and surround the mixing chamber 101. The mixing device 100 also includes a horizontal blowing mechanism 100c, which includes multiple horizontal blowing components 150. The air outlets of the multiple horizontal blowing components 150 are installed one-to-one within the multiple horizontal blowing mounting through holes 113, allowing the air outlets of the horizontal blowing components 150 to communicate with the mixing chamber 101. The air jet direction of the horizontal blowing components 150 is horizontal or inclined downwards, so that the gas ejected by the horizontal blowing components 150 can act on the bottom corner of the mixing chamber 101, causing the powder at the bottom corner of the mixing chamber 101 to tumble and thus be mixed.

[0059] like Figure 9 and Figure 10 As shown, in this embodiment, the powder enters the mixing chamber 101 through the feed inlet 111. After the powder is fed into the mixing chamber 101, multiple oblique blowing components 140 spray air simultaneously, causing the powder outside the bottom corner of the mixing chamber 101 to tumble and mix. After the multiple oblique blowing components 140 spray air for a period of time, the multiple oblique blowing components 140 stop spraying air simultaneously, while multiple horizontal blowing components 150 spray air simultaneously, so that the powder at the bottom corner of the mixing chamber 101 can be mixed. After the multiple horizontal blowing components 150 spray air for a period of time, the multiple horizontal blowing components 150 stop spraying air simultaneously, while multiple oblique blowing components 140 spray air simultaneously. During the spraying process of the multiple oblique blowing components 140 and the multiple horizontal blowing components 150, multiple back-blowing components alternately spray air to form turbulence in the mixing chamber 101, thereby improving the mixing effect of the powder. In this way, by alternately blowing air through the oblique blowing mechanism 100b and the horizontal blowing mechanism 100c, and by alternately back-blowing through multiple sets of back-blowing components, the powder in all areas of the mixing chamber 101 can be mixed, avoiding the presence of a mixing blind zone in the mixing chamber 101 and improving the uniformity of mixing.

[0060] The aforementioned airflow mixer 10 alternately sprays air through an oblique blowing mechanism 100b and a horizontal blowing mechanism 100c. Because the oblique blowing mechanism 100b is angled upwards, the gas it sprays causes the powder outside the bottom corner of the mixing chamber 101 to churn, thus mixing the powder outside the bottom corner. Because the horizontal blowing assembly 150 is horizontally or angled downwards, the gas sprayed by the horizontal blowing mechanism 100c can act on the bottom corner of the mixing chamber 101, mixing the powder there and avoiding blind spots in the mixing chamber 101, thus improving the uniformity of mixing. Furthermore, because multiple sets of back-blowing components alternately back-blow while the oblique blowing mechanism 100b and the horizontal blowing mechanism 100c alternately spray air, the back-blowing components create turbulence within the mixing chamber 101, increasing the airflow direction within the mixing chamber 101 and further improving the uniformity of mixing.

[0061] like Figure 2 and Figure 3 As shown, in one embodiment, the mixing tank 100a includes a mixing tank body 110, a conical plug 120, and a lifting drive mechanism 130. A feed inlet 111 is formed in the mixing tank body 110, and a slanted blowing mounting through hole 112 is formed in the mixing tank body 110. The conical plug 120 is located inside the mixing tank body 110, with its tip pointing upwards. The lower edge of the conical plug 120 abuts against the inner wall of the mixing tank body 110, so that the conical surface of the conical plug 120 and the inner wall of the mixing tank body 110 together limit the formation of a mixing cavity 101. The lifting drive mechanism 130 is installed in the mixing tank body 110, and its power output end is connected to the conical plug 120. After mixing is completed, the lifting drive mechanism 130 lifts the conical plug 120, opening the lower end of the mixing cavity 101 and discharging the material.

[0062] like Figure 2 As shown, in one embodiment, the negative pressure conveying device 200 includes a conveying tank 210, a mounting plate 220, and filter cartridges 230. The conveying tank 210 is installed at the upper end of the mixing tank 100a and is connected to the mixing chamber 101. The mounting plate 220 is fixedly sleeved inside the conveying tank 210. Multiple filter cartridges 230 are fixedly connected to the mounting plate 220, and the opening of each filter cartridge 230 faces the side of the mounting plate 220 away from the mixing chamber 101.

[0063] like Figures 1 to 10 As shown, this disclosure also provides an airflow mixing method for simultaneously mixing multiple powders. The airflow mixer 10 is used to mix multiple powders. The airflow mixing method for simultaneously mixing multiple powders includes the following steps:

[0064] S100: Conveys multiple powder materials into the mixing chamber 101.

[0065] In this embodiment, various powders enter the mixing chamber 101 through multiple feed ports 111.

[0066] S300: It alternates between jetting air through the oblique blowing mechanism 100b and the horizontal blowing mechanism 100c, while simultaneously alternating between back-blowing through multiple sets of back-blowing components.

[0067] In this embodiment, because the jet direction of the oblique blowing mechanism 100b is inclined upward, the gas ejected by the oblique blowing mechanism 100b causes the powder outside the bottom corner of the mixing chamber 101 to churn, thereby mixing the powder outside the bottom corner. Because the jet direction of the horizontal blowing assembly 150 is set horizontally or inclined downward, the gas ejected by the horizontal blowing mechanism 100c can act on the bottom corner of the mixing chamber 101, ensuring that the powder at the bottom corner of the mixing chamber 101 is mixed, avoiding the problem of blind mixing zones in the mixing chamber 101, and improving the uniformity of mixing. Multiple sets of back-blowing assemblies alternately back-blow to create turbulence within the mixing chamber 101, resulting in more airflow directions within the mixing chamber 101, further improving the uniformity of the mixed powder.

[0068] The aforementioned airflow mixing method for simultaneously mixing multiple powders utilizes alternating jets from the inclined blowing mechanism 100b and the horizontal blowing mechanism 100c. Because the inclined blowing mechanism 100b is angled upwards, the gas emitted from it causes the powder outside the bottom corner of the mixing chamber 101 to churn, thus mixing the powder outside the bottom corner. Since the horizontal blowing assembly 150 is positioned horizontally or angled downwards, the gas emitted from the horizontal blowing mechanism 100c can reach the bottom corner of the mixing chamber 101, ensuring that the powder at the bottom corner is mixed, avoiding the problem of blind spots in the mixing chamber 101, and improving the uniformity of the mixture. Furthermore, because multiple sets of back-blowing components alternately back-blow while the inclined blowing mechanism 100b and the horizontal blowing mechanism 100c alternately emit gas, the back-blowing components create turbulence within the mixing chamber 101, resulting in more airflow directions within the mixing chamber 101, further improving the uniformity of the mixture.

[0069] like Figure 11 As shown, in one embodiment, the plurality of filter cartridges 230 include a plurality of oblique-blowing turbulence filter cartridges 231 and a plurality of horizontal-blowing turbulence filter cartridges 232. The plurality of oblique-blowing turbulence filter cartridges 231 are vertically corresponding to the plurality of oblique-blowing components 140, and the plurality of horizontal-blowing turbulence filter cartridges 232 are vertically corresponding to the plurality of horizontal-blowing components 150. In this embodiment, the plurality of oblique-blowing turbulence filter cartridges 231 and the plurality of oblique-blowing components 140 are vertically corresponding to each other, and the plurality of horizontal-blowing turbulence filter cartridges 232 and the plurality of horizontal-blowing components 150 are vertically corresponding to each other.

[0070] like Figure 11As shown, further, multiple backflush pipes 301 together form two sets of backflush components, namely, the oblique-blowing turbulence backflush component 310 and the horizontal-blowing turbulence backflush component 320. The oblique-blowing turbulence backflush component 310 includes multiple backflush pipes 301, and the air outlets of the multiple backflush pipes 301 of the oblique-blowing turbulence backflush component 310 are arranged one-to-one with the openings of the multiple oblique-blowing turbulence filter cartridges 231. The horizontal-blowing turbulence backflush component 320 includes multiple backflush pipes 301, and the air outlets of the multiple backflush pipes 301 of the horizontal-blowing turbulence backflush component 320 are arranged one-to-one with the openings of the multiple horizontal-blowing turbulence filter cartridges 232. In this embodiment, the oblique-blowing turbulence backflush component 310 and the horizontal-blowing turbulence backflush component 320 alternately backflush, which not only allows the mixing chamber 101 to exhaust through the filter cartridges 230, but also creates turbulence within the mixing chamber 101, improving the mixing effect of the powder.

[0071] like Figure 11 As shown, in one embodiment, S300 includes:

[0072] S301: Gas is sprayed through multiple oblique blowing components 140, and backflushing is achieved through multiple backflushing pipes 301 of the oblique blowing turbulence backflushing component 310. In this embodiment, the outlet ends of the multiple backflushing pipes 301 of the oblique blowing turbulence backflushing component 310 are arranged one-to-one with the openings of multiple oblique blowing turbulence filter cartridges 231, and the multiple oblique blowing turbulence filter cartridges 231 are arranged vertically and vertically corresponding to the multiple oblique blowing components 140, so that the outlet ends of the multiple backflushing pipes 301, the openings of the multiple oblique blowing turbulence filter cartridges 231, and the multiple oblique blowing components 140 are arranged one-to-one. When the multiple oblique blowing components 140 spray gas, the multiple backflushing pipes 301 of the oblique blowing turbulence backflushing component 310 backflush, and the multiple oblique blowing turbulence filter cartridges 231 spray gas to turbulent the gas sprayed by the oblique blowing components 140, thereby improving the mixing effect. The air outlets of the multiple backflush pipes 301 of the oblique blowing turbulence backflush assembly 310 are set one-to-one with the multiple oblique blowing assemblies 140. Each backflush pipe 301 of the oblique blowing turbulence backflush assembly 310 mainly turbulents the corresponding oblique blowing assembly 140, thereby improving the turbulence effect of the oblique blowing turbulence backflush assembly 310 and thus improving the uniformity of the mixing.

[0073] S303: Gas is sprayed through multiple cross-blowing components 150, and back-blowing is achieved through multiple back-blowing pipes 301 of the cross-blowing turbulence-back-blowing component 320. In this embodiment, the outlet ends of the multiple back-blowing pipes 301 of the cross-blowing turbulence-back-blowing component 320 are arranged one-to-one with the openings of multiple cross-blowing turbulence filter cartridges 232, and the multiple cross-blowing turbulence filter cartridges 232 are arranged vertically and vertically corresponding to the multiple cross-blowing components 150, so that the outlet ends of the multiple back-blowing pipes 301, the openings of the multiple cross-blowing turbulence filter cartridges 232, and the multiple cross-blowing components 150 are arranged one-to-one. When the multiple cross-blowing components 150 spray gas, the multiple back-blowing pipes 301 of the cross-blowing turbulence-back-blowing component 320 back-blow, and the multiple cross-blowing turbulence filter cartridges 232 spray gas to turbulent the gas of the cross-blowing components 150, thereby improving the mixing effect. The air outlets of the multiple backflush pipes 301 of the cross-blowing turbulence backflush assembly 320 are set one-to-one with the multiple cross-blowing assemblies 150. Each backflush pipe 301 of the cross-blowing turbulence backflush assembly 320 mainly turbulents the corresponding cross-blowing assembly 150, thereby improving the turbulence effect of the cross-blowing turbulence backflush assembly 320 and thus improving the uniformity of the mixing.

[0074] S305: S301 and S303 are performed alternately in sequence. In this embodiment, S301 and S303 are performed alternately in sequence, which makes the mixing process free of blind spots and improves the uniformity of mixing.

[0075] In one embodiment, in S301, the multiple backflush pipes 301 of the oblique blowing turbulence backflush assembly 310 are intermittently jetting, which reduces the jetting time of the backflush pipes 301 of the oblique blowing turbulence backflush assembly 310, thereby reducing the time of airflow impacting the oblique blowing turbulence filter cartridge 231, avoiding damage to the filter material on the oblique blowing turbulence filter cartridge 231, and ensuring the filtration effect of the oblique blowing turbulence filter cartridge 231 during exhaust.

[0076] In one embodiment, in S301, the multiple backflush pipes 301 of the oblique blowing turbulence backflush assembly 310 alternately spray air, which not only enables the oblique blowing turbulence backflush assembly 310 to continuously turbulent the airflow and improve the uniformity of the mixture, but also reduces the time of airflow impacting the oblique blowing turbulence filter cartridge 231, avoiding damage to the filter material on the oblique blowing turbulence filter cartridge 231, thus ensuring the filtration effect of the oblique blowing turbulence filter cartridge 231 during exhaust, and preventing the problem of powder leakage through the oblique blowing turbulence filter cartridge 231.

[0077] In one embodiment, in S303, the multiple backflush pipes 301 of the cross-blowing turbulence backflush assembly 320 are intermittently jetting, which reduces the jetting time of the backflush pipes 301 of the cross-blowing turbulence backflush assembly 320, thereby reducing the time of airflow impacting the cross-blowing turbulence filter cartridge 232, avoiding damage to the filter material on the cross-blowing turbulence filter cartridge 232, and ensuring the filtration effect of the cross-blowing turbulence filter cartridge 232 during exhaust.

[0078] In one embodiment, in S303, the multiple backflush pipes 301 of the cross-blowing turbulence backflush assembly 320 alternately spray air, which not only enables the cross-blowing turbulence backflush assembly 320 to continuously turbulent the airflow and improve the uniformity of the mixture, but also reduces the time for the airflow to impact the cross-blowing turbulence filter cartridge 232, avoiding damage to the filter material on the cross-blowing turbulence filter cartridge 232, thus ensuring the filtration effect of the cross-blowing turbulence filter cartridge 232 during exhaust, and preventing the problem of powder leakage through the cross-blowing turbulence filter cartridge 232.

[0079] like Figure 11 As shown, in one embodiment, the horizontal blowing component 150 and the oblique blowing component 140 are alternately arranged in the circumferential direction of the mixing chamber 101, so that the air force distribution in the mixing chamber 101 is more uniform and the uniformity of mixing is improved.

[0080] like Figure 3 As shown, in one embodiment, the oblique blowing assembly 140 includes an oblique blowing nozzle 141, a switch drive 142, and a sealing member 143. The first end of the oblique blowing nozzle 141 is installed within the oblique blowing mounting through hole 112. The oblique blowing nozzle 141 has an oblique blowing channel 1411 and a movable channel 1412, which are connected. An air inlet 1413 is provided on the outer side of the oblique blowing nozzle 141, and the air inlet 1413 is connected to the movable channel 1412. The switch drive 142 is installed at the second end of the oblique blowing nozzle 141. The power output shaft of the switch drive 142 movably passes through the movable channel 1412, and a gap exists between the power output shaft of the switch drive 142 and the inner wall of the movable channel 1412. The blocking component 143 is located inside the movable channel 1412. The blocking component 143 is also connected to the power output shaft of the switch drive component 142. There is a gap between the blocking component 143 and the inner wall of the movable channel 1412. The switch drive component 142 is used to drive the blocking component 143 to block or open the oblique blowing channel 1411. When the blocking component 143 opens the oblique blowing channel 1411, the air inlet 1413, the movable channel 1412 and the oblique blowing channel 1411 are connected in sequence.

[0081] like Figure 3As shown, in this embodiment, the diameter of the oblique blowing channel 1411 is smaller than the diameter of the movable channel 1412. The switch drive member 142 is used to drive the sealing member 143 to abut against the entrance of the oblique blowing channel 1411 to block the entrance of the oblique blowing channel 1411. When the oblique blowing assembly 140 sprays air, the switch drive member 142 drives the sealing member 143 to leave the entrance of the oblique blowing channel 1411, so that the oblique blowing channel 1411 is connected to the movable channel 1412. The external high-pressure gas enters through the air inlet 1413, so that the external high-pressure gas is sprayed into the mixing chamber 101 through the movable channel 1412 and the oblique blowing channel 1411, so that the powder in the mixing chamber 101 tumbles. When the inclined blowing assembly 140 stops spraying gas, the external high-pressure gas stops entering the air inlet 1413. The switch drive unit 142 drives the sealing member 143 to abut against the entrance of the inclined blowing channel 1411, so that the sealing member 143 blocks the inclined blowing channel 1411, avoiding the problem of clogging the inclined blowing assembly 140, ensuring the normal operation of the inclined blowing assembly 140 spraying gas next time, and thus ensuring the uniformity of mixing.

[0082] like Figure 3 As shown, in one embodiment, the switch driver 142 is a cylinder. Of course, in other embodiments, the switch driver 142 can also be a motor, an electric cylinder, or other existing linear drive components.

[0083] like Figure 3 As shown, in one embodiment, the oblique blowing assembly 140 further includes an air inlet pipe 144 connected to the air inlet 1413. In this embodiment, external high-pressure gas enters the air inlet 1413 through the air inlet pipe 144.

[0084] Compared with the prior art, this disclosure has at least the following advantages:

[0085] The mixing chamber 101 is mixed by alternating jetting from the oblique blowing mechanism 100b and the horizontal blowing mechanism 100c. The gas ejected by the oblique blowing mechanism 100b causes the gas in the mixing chamber 101 to churn, mixing the powder outside the bottom corners. The gas ejected by the horizontal blowing mechanism 100c can act on the bottom corners of the mixing chamber 101, mixing the powder there and avoiding the problem of blind spots in the mixing chamber 101, thus improving the uniformity of mixing. Furthermore, while the oblique blowing mechanism 100b and the horizontal blowing mechanism 100c are alternately jetting, multiple sets of back-blowing components are alternately back-blowing, creating turbulence within the mixing chamber 101. This results in more airflow directions within the mixing chamber 101, further improving the uniformity of mixing.

[0086] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A method for simultaneously mixing multiple powders using an airflow mixer, wherein the multiple powders are mixed using an airflow mixer, the airflow mixer comprising: A mixing device includes a mixing tank and an inclined blowing mechanism. The mixing tank forms a mixing chamber and has multiple inclined blowing mounting through holes arranged around the bottom of the mixing chamber. The inclined blowing mechanism includes multiple inclined blowing components, and the air outlets of the multiple inclined blowing components are installed one-to-one in the multiple inclined blowing mounting through holes, so that the air outlets of the inclined blowing components are connected to the mixing chamber. The air jet direction of the inclined blowing components is inclined upward. A negative pressure conveying device is installed at the upper end of the mixing tank and is connected to the mixing chamber. The negative pressure conveying device contains multiple filter cartridges, each with its opening facing upwards. The backflush device has multiple backflush pipes installed in the negative pressure conveying device. The air outlets of the multiple backflush pipes are arranged one-to-one with the openings of the multiple filter cartridges. The multiple backflush pipes together form multiple sets of backflush components. The mixing tank is characterized by having multiple horizontal blowing mounting through holes arranged around the bottom of the mixing chamber; the mixing device further includes a horizontal blowing mechanism, which comprises multiple horizontal blowing components, the air outlets of which are installed one-to-one in the multiple horizontal blowing mounting through holes, so that the air outlets of the horizontal blowing components are connected to the mixing chamber, and the air jet direction of the horizontal blowing components is arranged horizontally or inclined downwards; the multiple filter cartridges include multiple inclined blowing turbulence filter cartridges and multiple horizontal blowing turbulence filter cartridges, and the multiple inclined blowing turbulence filter cartridges and the multiple inclined blowing components are arranged vertically in correspondence. The system comprises multiple horizontally blowing turbulence filter cartridges and multiple horizontally blowing components arranged vertically in correspondence; multiple backflush pipes together form two sets of backflush components, namely, an obliquely blowing turbulence backflush component and a horizontally blowing turbulence backflush component; the obliquely blowing turbulence backflush component includes multiple backflush pipes, and the air outlets of the multiple backflush pipes of the obliquely blowing turbulence backflush component are arranged vertically in correspondence with the openings of the multiple obliquely blowing turbulence filter cartridges; the horizontally blowing turbulence backflush component includes multiple backflush pipes, and the air outlets of the multiple backflush pipes of the horizontally blowing turbulence backflush component are arranged vertically in correspondence with the openings of the multiple horizontally blowing turbulence filter cartridges. The airflow mixing method for simultaneously mixing multiple powders includes the following steps: S100: Convey multiple powders into the mixing chamber; S300: Air is alternately ejected through the oblique blowing mechanism and the horizontal blowing mechanism, while back-blowing is alternately performed through multiple sets of back-blowing components.

2. The airflow mixing method for simultaneously mixing multiple powders according to claim 1, characterized in that, The S300 includes: S301: Air is ejected through multiple oblique blowing components and backflushed through multiple backflush pipes of the oblique blowing turbulence backflush components; S303: Air is ejected through multiple of the said cross-blowing components, and back-blowing is performed through multiple back-blowing pipes of the said cross-blowing turbulence back-blowing component; S305: S301 and S303 are performed alternately in sequence.

3. The airflow mixing method for simultaneously mixing multiple powders according to claim 2, characterized in that, In S301, the multiple backflush pipes of the oblique blowing turbulence backflush assembly are all intermittent jets.

4. The airflow mixing method for simultaneously mixing multiple powders according to claim 3, characterized in that, In S301, the multiple backflush pipes of the oblique blow turbulence backflush assembly alternately spray air.

5. The airflow mixing method for simultaneously mixing multiple powders according to claim 2, characterized in that, In S303, the multiple backflush pipes of the cross-blowing turbulence backflush assembly are all intermittent jets.

6. The airflow mixing method for simultaneously mixing multiple powders according to claim 5, characterized in that, In S303, the multiple backflush pipes of the cross-blowing turbulence backflush assembly alternately spray air.

7. The airflow mixing method for simultaneously mixing multiple powders according to claim 1, characterized in that, The horizontal blowing assembly and the oblique blowing assembly are alternately spaced in the circumferential direction of the mixing chamber.

8. The airflow mixing method for simultaneously mixing multiple powders according to claim 1, characterized in that, The oblique blowing assembly includes: An angled blow nozzle, the first end of which is installed in the angled blow mounting through hole, the angled blow nozzle having an angled blow channel and a movable channel, the angled blow channel being connected to the movable channel, and an air inlet being provided on the outer side of the angled blow nozzle, the air inlet being connected to the movable channel; A switch driver is mounted on the second end of the oblique blow nozzle. The power output shaft of the switch driver movably passes through the movable channel, and a gap exists between the power output shaft of the switch driver and the inner wall of the movable channel. A blocking component is located within the movable channel. The blocking component is also connected to the power output shaft of the switch driver. There is a gap between the blocking component and the inner wall of the movable channel. The switch driver is used to drive the blocking component to block or open the oblique blowing channel. When the blocking component opens the oblique blowing channel, the air inlet, the movable channel, and the oblique blowing channel are connected in sequence.

9. The airflow mixing method for simultaneously mixing multiple powders according to claim 8, characterized in that, The oblique blowing assembly also includes an air intake pipe, which is connected to the air inlet.

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