Pneumatic circulating impingement mixer

Abstract

The application discloses a pneumatic circulation collision type mixing machine and relates to the field of material mixing, which comprises a feeding device, a first mixing reactor, a first material shunting device, a second mixing reactor and a second material shunting device. The feeding device comprises a feeding pipe, a fan and a stock bin. The first mixing reactor comprises a first material mixing cylinder, a first gas filtering device, a first spraying acceleration pipe and the like. The second mixing reactor comprises a second material mixing cylinder, a second gas filtering device, a second spraying acceleration pipe and the like. The first material shunting device comprises a first Y-shaped shunting pipe and a first material conveying pipe. The second material shunting device comprises a second Y-shaped shunting pipe, a second material conveying pipe, a discharging pipe and a pneumatic ball valve. The application adopts the airflow collision type mixing mode, can effectively eliminate the material mixing and gathering, can self-adaptively control the gas-solid flow collision process, improves the material mixing uniformity, improves the mixing efficiency by using the circulating pneumatic collision effect and reduces the energy consumption.

Description

Technical Field

[0001] This invention relates to the field of material mixing technology, and more specifically, to a pneumatic circulating collision mixer. Background Technology

[0002] Currently, when known mechanical material mixers with motors and agitators as their main structure are used for mixing powdery materials, their mixing effect is greatly affected by the stirring characteristics of the agitation mechanism, resulting in low mixing uniformity. Moreover, in order to achieve ideal mixing uniformity, multiple mixing cycles are required, leading to long mixing time, low mixing efficiency, and high energy consumption of mechanically driven mixing.

[0003] Most pneumatic mixers use pulse pneumatic mixing, which improves mixing efficiency. However, pneumatic blowing and throwing mixing is significantly affected by the density characteristics of the material, which can easily lead to material stratification and affect the quality of the finished product. The gas energy utilization rate is low and the energy consumption is high.

[0004] Therefore, in view of the problems existing in existing mixers, it is very necessary to disclose a pneumatic circulation collision mixer that has fast material mixing speed, high uniformity, high efficiency and energy saving. Summary of the Invention

[0005] In view of this, the present invention proposes a pneumatic circulation collision mixer, the specific technical solution of which is as follows:

[0006] A pneumatic circulating collision mixer includes a feeding device, a first mixing reactor, a first material diversion device, a second mixing reactor, and a second material diversion device.

[0007] The feeding device includes a feeding pipe, a blower, and a hopper; the feeding pipe is arranged horizontally, and its outer opening is an air inlet connected to the blower; the inlet located on the feeding pipe body is connected to the hopper; the end of the feeding pipe away from the air inlet is the discharge port.

[0008] The first mixing reactor includes a first material mixing cylinder, a first gas filtration device, a first jet acceleration pipe, a first material level switch, a first material collecting cylinder, a first discharge valve, and a first T-shaped discharge pipe. The first material mixing cylinder has a gas outlet at its top, and the first gas filtration device is installed at the top of the inner cavity of the first material mixing cylinder. The first material collecting cylinder is connected to the lower part of the first material mixing cylinder, and the first material level switch is installed on the upper part of the inner wall of the first material collecting cylinder. The first discharge valve is installed at the bottom outlet of the first material collecting cylinder, and the first T-shaped discharge pipe is connected below the bottom outlet of the first material collecting cylinder. There are two sets of feeding devices, located on both sides of the outer surface near the lower part of the first material mixing cylinder. The outlet of each set of feeding devices is connected to a vertical first material conveying pipe. The upper part of the first material conveying pipe is connected to the first jet acceleration pipe, and the outlets of the two first jet acceleration pipes communicate with the upper part of the inner cavity of the first material mixing cylinder, with the two outlets facing each other.

[0009] The second mixing reactor includes a second material mixing cylinder, a second gas filtration device, a second jet acceleration pipe, a second material level switch, a second material collecting cylinder, a second discharge valve, and a second T-shaped discharge pipe. The top of the second material mixing cylinder has a gas outlet, and the second gas filtration device is installed at the top of the inner cavity of the second material mixing cylinder. The second material collecting cylinder is connected to the lower part of the second material mixing cylinder, and the second material level switch is installed on the upper part of the inner wall of the second material collecting cylinder. The second discharge valve is installed at the bottom outlet of the second material collecting cylinder, and the second T-shaped discharge pipe is connected below the bottom outlet of the second material collecting cylinder.

[0010] The first material diversion device includes a first Y-shaped diversion pipe and a first material conveying pipe; the second material diversion device includes a second Y-shaped diversion pipe, a second material conveying pipe, a discharge pipe, and a pneumatic ball valve; the outlet of the first T-shaped discharge pipe is connected to the first Y-shaped diversion pipe, and each of the two forked outlets of the first Y-shaped diversion pipe is connected to a vertical second material conveying pipe; the upper part of the second material conveying pipe is connected to the second jet acceleration pipe, and the outlets of the two second jet acceleration pipes are connected to the upper part of the inner cavity of the second material mixing cylinder, and the two outlets are arranged facing each other; the outlet of the second T-shaped discharge pipe is connected to the second Y-shaped diversion pipe, and each of the two forked outlets of the second Y-shaped diversion pipe is connected to a first material conveying pipe; a blower is connected to both the first T-shaped discharge pipe and the second T-shaped discharge pipe; the pneumatic ball valve is installed on the second material conveying pipe, and the discharge pipe is connected to the second material conveying pipe and located below the pneumatic ball valve.

[0011] By adopting the above technical solution, the pneumatic circulating collision mixer of the present invention uses airflow collision mixing method, which can effectively eliminate material mixing and agglomeration; the gas-solid-flow collision process can be adaptively controlled, improving the uniformity of material mixing; and the circulating pneumatic collision effect improves mixing efficiency and reduces energy consumption.

[0012] Preferably, the feeding pipe is a reducing pipe, wherein the diameter of the pipe near the air inlet is larger than the diameter of the pipe near the discharge outlet, the shrinkage ratio of the reducing pipe is 0.2 to 0.8, and the diameter range of the feeding pipe is 10 mm to 150 mm.

[0013] Preferably, the diameters of the first material conveying pipe, the first Y-shaped diverter pipe, the second material conveying pipe, and the second Y-shaped diverter pipe are 15mm to 150mm, and the airflow velocity inside the pipes is 5m / s to 40m / s.

[0014] Preferably, the first jet acceleration pipe and the second jet acceleration pipe are equal-diameter or variable-diameter pipes with a diameter between 8mm and 100mm, and the airflow velocity inside the pipe is 15m / s to 65m / s.

[0015] Preferably, a first anti-segregation device is installed at the lower part of the inner cavity of the first material mixing cylinder.

[0016] Preferably, a second anti-segregation device is installed at the lower position of the inner cavity of the second material mixing cylinder.

[0017] The anti-segregation device of this invention can effectively control the formation of segregation after material mixing and improve the mixing quality.

[0018] Preferably, the first level switch is a first tuning fork level switch, and the second level switch is a second tuning fork level switch.

[0019] Preferably, the first discharge valve is a first discharge cone valve, and the second discharge valve is a second discharge cone valve.

[0020] Preferably, the discharge port of the feeding pipe is a nozzle-type discharge port.

[0021] Preferably, the feeding pipe, the hopper, each material mixing cylinder, each jet acceleration pipe, each material collecting cylinder, each T-shaped discharge pipe, each unloading valve, each material conveying pipe, each Y-shaped diverting pipe, the discharge pipe, and each anti-segregation device are all made of non-metallic materials or have a metal outer layer and a non-metallic inner lining material.

[0022] Preferably, the non-metallic materials include: polytetrafluoroethylene, polycarbonate, polyamide, polyacetal, polypropylene, polyphenylene sulfide, polyaryl ester, unsaturated polyester, phenolic plastics, epoxy plastics, ultra-high molecular weight polyethylene, modified polyphenylene ether, and ceramics.

[0023] Preferably, the non-metallic lining material in the metal outer layer includes: polytetrafluoroethylene, polycarbonate, polyamide, polyacetal, modified polyphenylene ether, polyester, phenolic plastic, epoxy plastic, and ultra-high molecular weight polyethylene, and the lining thickness is 3mm to 25mm.

[0024] Compared with existing technologies, the beneficial effects of this invention are as follows: This pneumatic circulating collision mixer integrates a feeding device, a mixing reactor, and a material diversion device. The jet acceleration pipes in the mixing reactor are arranged in opposite directions, allowing the high-speed gas-solid two-phase flow to collide and compress at the collision center, resulting in material interlocking and uniform mixing. Its anti-segregation device reduces friction and collision between materials, preventing segregation and ensuring the quality of the mixture. The gas-solid two-phase flow also improves gas utilization and fusion efficiency. Furthermore, the components of this mixer that come into contact with the material are made of non-metallic materials or have a metallic outer layer and a non-metallic inner lining, effectively preventing contamination of the material by metal contact. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 This is a front view of a pneumatic collision material mixer disclosed in a preferred embodiment of the present invention.

[0027] Figure 2 The image shows a right view of a pneumatic collision material mixer according to a preferred embodiment of the present invention.

[0028] Figure 3 This is a bottom view of a pneumatic collision material mixer disclosed in a preferred embodiment of the present invention.

[0029] In the diagram: 10, feeding device; 20, first mixing reactor; 30, first material diversion device; 40, second mixing reactor; 50, second material diversion device; 101, feeding pipe; 102, blower; 103, silo; 201, first material mixing cylinder; 202, first gas filtration device; 203, first jet acceleration pipe; 204, first anti-segregation device; 205, first level switch; 206, first material collection cylinder; 207, first discharge valve. ; 208, First T-shaped discharge pipe; 301, First Y-shaped diverter pipe; 302, First material conveying pipe; 401, Second material mixing cylinder; 402, Second gas filtration device; 403, Second jet acceleration pipe; 404, Second material level switch; 405, Second material collection cylinder; 406, Second discharge valve; 407, Second T-shaped discharge pipe; 501, Second Y-shaped diverter pipe; 502, Second material conveying pipe; 503, Discharge pipe; 504, Pneumatic ball valve. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, it should be understood that the terms "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 invention 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 invention.

[0032] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Example:

[0033] like Figures 1-3 As shown, the present invention provides a pneumatic circulating collision mixer, comprising a feeding device 10, a first mixing reactor 20, a first material diversion device 30, a second mixing reactor 40, and a second material diversion device 50.

[0034] The feeding device 10 includes a feeding pipe 101, a blower 102, and a hopper 103. The feeding pipe 101 is arranged horizontally and has a three-channel structure. Its outer pipe opening is the air inlet connected to the blower 102. The inlet located on the pipe body of the feeding pipe 101 is connected to the hopper 103. The end of the feeding pipe 101 away from the air inlet is the discharge port, which is a nozzle-type discharge port.

[0035] Specifically, in this invention, the feeding pipe 101 is a reducing pipe, with the diameter of the pipe near the air inlet being larger than the diameter of the pipe near the discharge outlet. The shrinkage ratio of the reducing pipe is 0.2 to 0.8, and the diameter range of the feeding pipe 101 is 10 mm to 150 mm.

[0036] The first mixing reactor 20 includes a first material mixing cylinder 201, a first gas filtration device 202, a first jet acceleration pipe 203, a first anti-segregation device 204, a first material level switch 205, a first material collecting cylinder 206, a first discharge valve 207, and a first T-shaped discharge pipe 208. The first material mixing cylinder 201 has a gas outlet at its top, and the first gas filtration device 202 is installed at the top of the inner cavity of the first material mixing cylinder 201. The first anti-segregation device 204 is installed at the lower part of the inner cavity of the first material mixing cylinder 201. The first material collecting cylinder 206 is connected to the lower part of the first material mixing cylinder 201, and the first material level switch 205 is installed at the upper part of the inner wall of the first material collecting cylinder 206. The first discharge valve 207 is installed at the bottom outlet of the first material collecting cylinder 206, and the first T-shaped discharge pipe 208 is connected below the bottom outlet of the first material collecting cylinder 206.

[0037] The second mixing reactor 40 includes a second material mixing cylinder 401, a second gas filtration device 402, a second jet acceleration pipe 403, a second anti-segregation device, a second material level switch 404, a second material collecting cylinder 405, a second discharge valve 406, and a second T-shaped discharge pipe 407. The top of the second material mixing cylinder 401 has a gas outlet, and the second gas filtration device 402 is installed at the top of the inner cavity of the second material mixing cylinder 401. A second anti-segregation device is installed at the lower part of the inner cavity of the second material mixing cylinder 401. The second material collecting cylinder 405 is connected to the lower part of the second material mixing cylinder 401, and a second material level switch 404 is installed at the upper part of the inner wall of the second material collecting cylinder 405. A second discharge valve 406 is installed at the bottom outlet of the second material collecting cylinder 405, and a second T-shaped discharge pipe 407 is connected below the bottom outlet of the second material collecting cylinder 405.

[0038] A gas filtration device, acting as a dust removal mechanism, is installed above the material mixing cylinder to discharge the purified airflow. An anti-segregation device is installed below the material mixing cylinder to reduce friction between the mixed materials, preventing component segregation during the material feeding process and improving the uniformity of material mixing. Both the gas filtration device and the anti-segregation device used in this invention are existing technologies and can be directly purchased.

[0039] The first material diversion device 30 includes a first Y-shaped diversion pipe 301 and a first material conveying pipe 302; the second material diversion device 50 includes a second Y-shaped diversion pipe 501, a second material conveying pipe 502, a discharge pipe 503, and a pneumatic ball valve 504.

[0040] There are two sets of feeding devices 10, located on the outside of both sides near the lower part of the first material mixing cylinder 201; the outlet of each set of feeding devices 10 is connected to a vertical first material conveying pipe 302; the upper part of the first material conveying pipe 302 is connected to the first jet acceleration pipe 203, the outlets of the two first jet acceleration pipes 203 are connected to the upper part of the inner cavity of the first material mixing cylinder 201, and the two outlets are arranged facing each other.

[0041] The outlet of the first T-shaped discharge pipe 208 is connected to the first Y-shaped diversion pipe 301. The two bifurcated outlets of the first Y-shaped diversion pipe 301 are each connected to a vertical second material conveying pipe 502. The upper part of the second material conveying pipe 502 is connected to the second jet acceleration pipe 403. The outlets of the two second jet acceleration pipes 403 are connected to the upper part of the inner cavity of the second material mixing cylinder 401, and the two outlets are arranged facing each other.

[0042] The outlet of the second T-shaped discharge pipe 407 is connected to the second Y-shaped diversion pipe 501, and each of the two branch outlets of the second Y-shaped diversion pipe 501 is connected to a first material conveying pipe 302; a blower is connected to both the first T-shaped discharge pipe 208 and the second T-shaped discharge pipe 407. Figure 1 (as indicated by point A in the middle); a pneumatic ball valve 504 is installed on the second material conveying pipe 502, and the discharge pipe 503 is connected to the second material conveying pipe 502 and is located below the pneumatic ball valve 504.

[0043] In this invention, the outlets of the two first jet acceleration pipes 203 and the outlets of the two second jet acceleration pipes 403 are arranged facing each other, so that the material reaches a certain speed in the jet acceleration pipes and the gas and solid phases collide violently at the outlet to achieve rapid mixing.

[0044] After multiple collisions and mixing, the material falls into the corresponding material collection cylinder. The material level switch is set at a certain height on the side of the material collection cylinder for material level detection. When the mixed material accumulates to a certain height, the material level switch outputs a signal for material dropping or material collection.

[0045] The mixed materials in the first mixing reactor 20 fall into the first T-shaped discharge pipe 208. The first T-shaped discharge pipe 208 uses pneumatic force to send the mixed materials to the first Y-shaped diversion pipe 301 and the first material conveying pipe 302 of the first material diversion device 30. After the materials are diverted, they enter the two second jet acceleration pipes 403 inserted on the side of the second mixing reactor 40 for the next material collision and mixing.

[0046] In a further specific embodiment, the diameters of the first material conveying pipe 302, the first Y-shaped diversion pipe 301, the second material conveying pipe 502, and the second Y-shaped diversion pipe 501 are 15mm to 150mm, and the airflow velocity inside the pipes is 5m / s to 40m / s.

[0047] Both the first jet acceleration pipe 203 and the second jet acceleration pipe 403 are equal-diameter or variable-diameter pipes with a diameter between 8mm and 100mm, and the airflow velocity inside the pipe is 15m / s to 65m / s.

[0048] In this invention, the first level switch 205 is preferably a first tuning fork level switch, and the second level switch 404 is preferably a second tuning fork level switch. The first discharge valve 207 is preferably a first discharge cone valve, and the second discharge valve 406 is preferably a second discharge cone valve.

[0049] Meanwhile, the feeding pipe 101, the hopper 103, each material mixing cylinder, each jet acceleration pipe, each material collection cylinder, each T-shaped discharge pipe, each discharge valve, each material conveying pipe, each Y-shaped diversion pipe, the discharge pipe 503, and each anti-segregation device are all made of non-metallic materials or have a metal outer layer and a non-metallic inner lining material.

[0050] Specifically, non-metallic materials include, but are not limited to: polytetrafluoroethylene (PTFE), polycarbonate (PC), polyamide (nylon), polyacetal (POM), polypropylene (PP), polyphenylene sulfide (PPS), polyaryl ester, unsaturated polyester, phenolic plastics, epoxy plastics, ultra-high molecular weight polyethylene (UPE), modified polyphenylene ether (modified PPE), ceramics, etc., among which: polytetrafluoroethylene (PTFE), modified polyphenylene ether (modified PPE), epoxy plastics, ultra-high molecular weight polyethylene (UPE), and ceramics are preferred.

[0051] The metal outer layer of the non-metallic lining material is generally covered with carbon steel or stainless steel. The non-metallic lining material includes, but is not limited to: polytetrafluoroethylene (PTFE), polycarbonate (PC), polyamide (nylon), polyacetal (POM), modified polyphenylene ether (modified PPE), polyester (PETP, PBTP), phenolic plastics, epoxy plastics, ultra-high molecular weight polyethylene (UPE), etc., with polytetrafluoroethylene (PTFE) being preferred. The lining thickness is 3mm to 25mm.

[0052] Working principle:

[0053] After the material falls from the hopper 103 into the feeding pipe 101, the blower 102 provides power to transport the material through the first material conveying pipe 302 to the two first jet acceleration pipes 203 of the first mixing reactor 20 for the first gas-solid two-phase flow collision mixing. The two first jet acceleration pipes 203 are arranged at a certain distance and inserted into the first material mixing cylinder 201. Due to the collision and compression of the material on the collision surface, the material is interlocked and uniformly mixed. The first gas filtration device 202 is fixed to the top of the first material mixing cylinder 201 as a filtration and dust removal device, discharging the purified gas.

[0054] The mixed material falls onto the first anti-segregation device 204, which reduces friction and collision between materials, ensuring the uniformity of the mixture. The mixture then falls into the first material collection cylinder 206. The first tuning fork level switch is set at a certain height on the side of the first material collection cylinder 206 as a material limit switch. When the mixture accumulates to a certain height, the first tuning fork level switch outputs a signal to drop or collect the material, and then opens the first discharge cone valve. The mixture is then sent through the first Y-shaped diversion pipe 301 and the second material conveying pipe 502 to the second jet acceleration pipe 403 installed in the second mixing reactor 40 to achieve secondary mixing of the material.

[0055] After the materials collide and mix in the second mixing reactor 40, the mixture then sequentially enters the first mixing reactor 20 through the second T-shaped discharge pipe 407, the second Y-shaped diversion pipe 501, and the first material conveying pipe 302, which are connected to the second mixing reactor 40, for material circulation and remixing. Multiple mixing improves the material integration, ensures the mixing uniformity, and enhances the mixing efficiency.

[0056] After multiple mixing processes, the material eventually accumulates in the first material collection cylinder 206. At this point, the pneumatic ball valve 504 installed on the second material conveying pipe 502 is closed to prevent the mixed material from re-entering the second mixing reactor 40. Finally, the mixed material passes through the first T-shaped discharge pipe 208, the first Y-shaped diversion pipe 301, and the first material conveying pipe 302 in sequence, and is output through the discharge pipe 503.

[0057] In this invention, the two discharge cone valves are normally open. After the first mixing, the mixture falls directly into the first T-shaped discharge pipe 208 and then enters the next mixing reactor for collision mixing via a material circulation device. After multiple mixing processes, the first discharge cone valve is closed, and the mixture finally accumulates in the first material collection cylinder 206 to await discharge.

[0058] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pneumatic circulating collision mixer, characterized in that, It includes a feeding device, a first mixing reactor, a first material diversion device, a second mixing reactor, and a second material diversion device; The feeding device includes a feeding pipe, a blower, and a hopper; the feeding pipe is arranged horizontally, and its outer opening is an air inlet connected to the blower; the inlet located on the feeding pipe body is connected to the hopper; the end of the feeding pipe away from the air inlet is the discharge port. The first mixing reactor includes a first material mixing cylinder, a first gas filtration device, a first jet acceleration pipe, a first material level switch, a first material collecting cylinder, a first discharge valve, and a first T-shaped discharge pipe. The first material mixing cylinder has a gas outlet at its top, and the first gas filtration device is installed at the top of the inner cavity of the first material mixing cylinder. The first material collecting cylinder is connected to the lower part of the first material mixing cylinder, and the first material level switch is installed on the upper part of the inner wall of the first material collecting cylinder. The first discharge valve is installed at the bottom outlet of the first material collecting cylinder, and the first T-shaped discharge pipe is connected below the bottom outlet of the first material collecting cylinder. There are two sets of feeding devices, located on both sides of the outer surface near the lower part of the first material mixing cylinder. The outlet of each set of feeding devices is connected to a vertical first material conveying pipe. The upper part of the first material conveying pipe is connected to the first jet acceleration pipe, and the outlets of the two first jet acceleration pipes communicate with the upper part of the inner cavity of the first material mixing cylinder, with the two outlets facing each other. The second mixing reactor includes a second material mixing cylinder, a second gas filtration device, a second jet acceleration pipe, a second material level switch, a second material collecting cylinder, a second discharge valve, and a second T-shaped discharge pipe. The top of the second material mixing cylinder has a gas outlet, and the second gas filtration device is installed at the top of the inner cavity of the second material mixing cylinder. The second material collecting cylinder is connected to the lower part of the second material mixing cylinder, and the second material level switch is installed on the upper part of the inner wall of the second material collecting cylinder. The second discharge valve is installed at the bottom outlet of the second material collecting cylinder, and the second T-shaped discharge pipe is connected below the bottom outlet of the second material collecting cylinder. The first material diversion device includes a first Y-shaped diversion pipe and a first material conveying pipe; the second material diversion device includes a second Y-shaped diversion pipe, a second material conveying pipe, a discharge pipe, and a pneumatic ball valve; the outlet of the first T-shaped discharge pipe is connected to the first Y-shaped diversion pipe, and each of the two forked outlets of the first Y-shaped diversion pipe is connected to a vertical second material conveying pipe; the upper part of the second material conveying pipe is connected to the second jet acceleration pipe, and the outlets of the two second jet acceleration pipes are connected to the upper part of the inner cavity of the second material mixing cylinder, and the two outlets are arranged facing each other; the outlet of the second T-shaped discharge pipe is connected to the second Y-shaped diversion pipe, and each of the two forked outlets of the second Y-shaped diversion pipe is connected to a first material conveying pipe; a jet blower is connected to both the first T-shaped discharge pipe and the second T-shaped discharge pipe; the pneumatic ball valve is installed on the second material conveying pipe, and the discharge pipe is connected to the second material conveying pipe and located below the pneumatic ball valve.

2. The pneumatic circulating collision mixer according to claim 1, characterized in that, The feeding pipe is a reducing pipe, with the diameter of the pipe near the air inlet being larger than the diameter of the pipe near the discharge outlet. The shrinkage ratio of the reducing pipe is 0.2 to 0.8, and the diameter range of the feeding pipe is 10 mm to 150 mm.

3. The pneumatic circulating collision mixer according to claim 1, characterized in that, The diameters of the first material conveying pipe, the first Y-shaped diverter pipe, the second material conveying pipe, and the second Y-shaped diverter pipe are 15mm to 150mm, and the airflow velocity inside the pipes is 5m / s to 40m / s.

4. The pneumatic circulating collision mixer according to claim 1, characterized in that, The first jet acceleration pipe and the second jet acceleration pipe are equal-diameter or variable-diameter pipes with a diameter between 8mm and 100mm, and the airflow velocity inside the pipe is 15m / s to 65m / s.

5. A pneumatic circulating collision mixer according to claim 1, characterized in that, A first anti-segregation device is installed at the lower part of the inner cavity of the first material mixing cylinder.

6. A pneumatic circulating collision mixer according to claim 5, characterized in that, A second anti-segregation device is installed at the lower part of the inner cavity of the second material mixing cylinder.

7. A pneumatic circulating collision mixer according to claim 1, characterized in that, The discharge port of the feeding pipe is a nozzle-type discharge port.

8. A pneumatic circulating collision mixer according to claim 6, characterized in that, The feeding pipe, the silo, each material mixing cylinder, each jet acceleration pipe, each material collecting cylinder, each T-shaped discharge pipe, each unloading valve, each material conveying pipe, each Y-shaped diverting pipe, the discharge pipe, and each anti-segregation device are all made of non-metallic materials or have a metal outer layer and a non-metallic inner lining material.

9. A pneumatic circulating collision mixer according to claim 8, characterized in that, The non-metallic materials include: polytetrafluoroethylene, polycarbonate, polyamide, polyacetal, polypropylene, polyphenylene sulfide, polyaryl ester, unsaturated polyester, phenolic plastics, epoxy plastics, ultra-high molecular weight polyethylene, modified polyphenylene ether, and ceramics.

10. A pneumatic circulating collision mixer according to claim 8, characterized in that, The non-metallic lining material in the metal outer layer includes: polytetrafluoroethylene, polycarbonate, polyamide, polyacetal, modified polyphenylene ether, polyester, phenolic plastic, epoxy plastic, and ultra-high molecular weight polyethylene, and the lining thickness is 3mm to 25mm.

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