All-material airflow shaping equipment

Abstract

A full-material airflow shaping device belongs to the technical field of airflow shaping, and comprises an annular channel formed in a machine body, the annular channel comprises a lower arc section, an ascending section, an upper arc section and a blanking section, and the annular channel is in a vertical state; a plurality of groups of air inlet nozzles are arranged on the side wall of the annular channel; the machine body is provided with a backflow chamber, a backflow channel is formed between the backflow chamber and the inner side wall of the annular channel, and the machine body is provided with a discharging channel communicated with the backflow chamber; an impeller is arranged in the backflow chamber, the discharging end of the impeller communicates with the discharging channel, and a grading motor is arranged on the front end face of the machine body. A feeding pipe is arranged on the side wall of the machine body; the machine body is provided with a separation chamber, the separation chamber is communicated with the discharging channel through a connecting pipe, a longitudinal pipe communicated with the feeding pipe is arranged at the bottom of the separation chamber, the separation chamber is provided with a separation assembly, and a pressurizing nozzle penetrates through the side wall of the longitudinal pipe. According to the scheme, all materials can be reshaped at the same time, the consistency of the material reshaping degree can be improved, and the reshaping quality and efficiency are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of shaping ultrafine materials by utilizing airflow, and in particular relates to a full-material airflow shaping device. Background Art

[0002] The existing ultra-fine material shaping equipment mainly has two types of shaping methods: airflow and mechanical shaping. The airflow shaping method is suitable for materials with high hardness, small fineness, and high shaping strength, while the mechanical shaping method is suitable for materials with low hardness. When the existing airflow shaping equipment shapes the material, in order to meet the gas flow requirements, the equipment must be equipped with an exhaust pipe equivalent to the flow rate of the air nozzle. The exhaust pipe will take away some materials while exhausting. In order to reduce material waste, the existing airflow shaping equipment usually collects the materials discharged from the exhaust pipe and then puts them into the shaping equipment again. The materials that are discharged and put into the shaping equipment again will participate in shaping for a much shorter time than the rest of the materials, which will lead to the inability to unify the degree of material shaping. It can only be compensated by extending the shaping time, but this will greatly reduce production efficiency. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the present invention provides a full-material airflow shaping device, which can simultaneously perform full-material shaping processing, and can improve the consistency of the material shaping degree, and improve the shaping quality and efficiency.

[0004] In order to achieve the purpose of the present invention, the following scheme is proposed: A full-material airflow shaping device, comprising: an annular channel formed inside a body, the annular channel comprising a lower arc section, an ascending section, an upper arc section and a falling section, and the annular channel is in a vertical state; The side wall of the annular channel is provided with a plurality of groups of air intake nozzles along an annular trajectory, and the airflows ejected by the air intake nozzles flow along the same trajectory and direction in the annular channel; A reflux chamber is formed at the position of the machine body corresponding to the upper arc section and adjacent to the blanking section. The reflux chamber is formed on the inner side of the annular channel, and a reflux channel is formed between the reflux chamber and the inner side wall of the annular channel. A discharge channel communicating with the reflux chamber is provided on the rear wall of the machine body. An impeller is arranged inside the reflux chamber, the discharge end of the impeller is connected to the discharge channel, and a grading motor is arranged on the front end of the machine body to drive the impeller to rotate; A feed pipe is provided at the lower arc section of the side wall of the machine body, and its feed direction is consistent with the direction of gas flow inside the annular channel. A control valve is provided at the end of the feed pipe. A separation chamber is provided on one side of the machine body corresponding to the annular channel and above the feed pipe. The interior of the separation chamber is connected with the discharge channel through a connecting pipe. A longitudinal pipe connected with the feed pipe is provided at the bottom of the separation chamber. The separation chamber is provided with a separation component for separating materials and gases. The separation component is provided with an exhaust pump. The separated materials enter the feed pipe through the longitudinal pipe, and a pressurizing nozzle is pierced through the side wall of the longitudinal pipe.

[0005] The beneficial effects of the present invention are: (1) The separated powder is shaped by the airflow ejected from the pressurized nozzle, further shortening the shaping gap between the discharged powder and the powder remaining in the annular channel, so that the powder can not only be circulated and shaped in the annular channel, but also the separated material can continue to be circulated and shaped when it flows back through the longitudinal pipe and the feed pipe.

[0006] (2) In order to balance the internal air pressure of the equipment and reduce material discharge, this solution sets an impeller to block the material and uses a separation component to separate the material and gas, thereby avoiding material discharge. The separated material will automatically enter the annular channel again for shaping through the longitudinal pipe and the feed pipe, which can minimize the difference in shaping time between materials and unify the shaping degree of the materials, thereby ensuring the consistency of the shaping quality of the entire material.

[0007] (3) This solution arranges the separation chamber and the annular channel in the same machine body structure, which not only makes the structure of the device more compact, but also can utilize the separation chamber, the longitudinal tube and the feed tube to form a circulating shaping system in parallel with the annular channel, which is used solely for shaping the separated powder, thereby improving the consistency of the shaping degree of the entire material. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0009] Figure 1 The figure shows the internal structure of a preferred embodiment of the present application.

[0010] Figure 2 A structural view of the exterior front of a preferred embodiment of the present application is shown.

[0011] Figure 3 The figure shows a structural view of the external rear of a preferred embodiment of the present application.

[0012] Figure 4 A cross-sectional view of a preferred embodiment of the present application during shaping is shown.

[0013] Figure 5 Shows Figure 4 A partial enlarged view of point A in the middle.

[0014] Figure 6 A cross-sectional view of a preferred embodiment of the present application during discharge is shown.

[0015] Figure 7 Shows Figure 6 A partial enlarged view of point B in the middle.

[0016] Figure 8 A schematic diagram of the internal structure of the valve body is shown.

[0017] Markings in the figure: machine cover -101, main body -102, lower arc segment -11, rising segment -12, upper arc segment -13, blanking segment -14, reflux chamber -15, reflux channel -151, discharge channel -152, Laval tube -16, guide plate -17, cavity -18, intake nozzle -2, impeller -3, grading motor -31, feed pipe -4, control valve -41, valve body -42, through hole -421, inclined hole -422, separation chamber -5, connecting pipe -51, longitudinal pipe -52, separation assembly -53, confluence chamber -531, filter bag -532, exhaust pump -54, pressurizing nozzle -55. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the implementation modes of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] like Figures 1 to 3 As shown, a full-material airflow shaping device includes: an annular channel formed inside a body, the annular channel includes a lower arc segment 11, an ascending segment 12, an upper arc segment 13 and a blanking segment 14 which are connected in sequence end to end, the annular channel is in a vertical state, specifically, the ascending segment 12 and the blanking segment 14 are vertically arranged, the lower arc segment 11 is connected between the lower ends of the ascending segment 12 and the blanking segment 14, and the arc shape protrudes downward, the upper arc segment 13 is connected between the upper ends of the ascending segment 12 and the blanking segment 14, and the arc shape protrudes upward.

[0020] Specifically, Figures 2 to 4 and Figure 6 As shown, the side wall of the annular channel is provided with multiple groups of intake nozzles 2 along the annular trajectory of the annular channel, and each group of intake nozzles 2 is provided with multiple ones in a circular array along the same cross-section of the annular channel, and the airflow ejected by the intake nozzles 2 flows along the same trajectory and direction in the annular channel.

[0021] As a preferred arrangement structure, the injection trajectories of the multiple air intake nozzles 2 arranged in the same group intersect at the same point on the axis of the annular channel, and the injection trajectories are arranged in an inclined structure with respect to the center line of the annular channel.

[0022] Specifically, Figure 1 , Figure 4and Figure 6 As shown, a reflux chamber 15 is formed at the position adjacent to the upper arc section 13 and the blanking section 14 of the machine body. The reflux chamber 15 is formed on the inner side of the annular channel, and a reflux channel 151 is formed between the reflux chamber 15 and the inner wall of the annular channel. The rear wall of the machine body is provided with a discharge channel 152 connected to the reflux chamber 15.

[0023] Specifically, Figure 1 , Figure 4 and Figure 6 As shown, an impeller 3 is provided inside the reflux chamber 15 , the discharge end of the impeller 3 is connected to the discharge channel 152 , and a grading motor 31 is provided on the front end surface of the machine body for driving the impeller 3 to rotate.

[0024] Specifically, Figures 1 to 4 and Figure 6 As shown, a feed pipe 4 is provided on the side wall of the machine body corresponding to the lower arc section 11, and its feed direction is consistent with the direction of gas flow inside the annular channel. As a preferred setting angle, the axis of the feed pipe 4 intersects with the axis of the annular channel, and a control valve 41 is provided at the end of the feed pipe 4.

[0025] Specifically, Figures 1 to 4 and Figure 6 As shown, a separation chamber 5 is provided on one side of the body corresponding to the annular channel and located above the feed pipe 4. The interior of the separation chamber 5 is connected to the discharge channel 152 through a connecting pipe 51. A longitudinal pipe 52 connected to the feed pipe 4 is provided at the bottom of the separation chamber 5. The separation chamber 5 is provided with a separation component 53 for separating materials and gases. The separation component 53 is provided with an exhaust pump 54 for exhausting gases. Since the gas is continuously input into the annular channel through the air intake nozzle 2, in order to maintain the balance of the system flow and ensure that the material flows at a predetermined speed and trajectory, it is necessary to continuously discharge the gas. The purpose of providing the exhaust pump 54 is to exhaust the excess airflow inside the annular channel. At the front end of the separation chamber 5, most of the material is isolated in the annular channel through the impeller 3. The separation component 53 separates the material entering the separation chamber 5 from the gas. The separated material enters the feed pipe 4 through the longitudinal pipe 52. The side wall of the longitudinal pipe 52 is pierced with a pressurized nozzle 55 for spraying positive pressure airflow to the bottom of the longitudinal pipe 52.

[0026] Working principle: The feed pipe 4 uses positive pressure filling to feed the material from the end of the feed pipe 4. The shaping work is carried out synchronously during the material filling process. After the material filling is completed, the control valve 41 is closed. The material first passes through the connection between the longitudinal tube 52 and the feed pipe 4, and then is quickly sprayed into the annular channel driven by the airflow ejected by the pressurized nozzle 55. After that, the material is shaped under the impact of the airflow ejected by the airflow nozzle 2, and the material is driven to circulate and move continuously inside the annular channel. During the movement, the material is shaped by collision with the inner wall of the annular channel and with each other. When the gas enters the annular channel through the airflow nozzle 2, in order to ensure the flow balance, the gas will be discharged from the impeller 3 driven by the exhaust pump 54, and the material will be discharged along with the gas when the gas is discharged. In this process, the volume of material entering the impeller 3 can be effectively controlled by controlling the rotation speed of the impeller 3. The faster the impeller 3 rotates, the greater the centrifugal force generated at its edge. When the material contacts the blades of the impeller 3, it is easily thrown out by the centrifugal force of the impeller 3, thereby reducing the volume of material entering the impeller 3 and reducing the workload of the separation component 53. By setting the impeller 3, most of the material remains in the annular channel and the shaping work is continued. The gas mixed with the material entering the separation chamber 5 is separated from the gas and the material under the action of the separation component 53. The gas is discharged through the exhaust pump 54, and the material is collected in the separation chamber 5. Because the pressure nozzle 55 sprays the air flow toward the bottom of the longitudinal tube 52, the upper end of the longitudinal tube 52 will be in a low pressure area, which will drive the gas in the separation chamber 5 that is not pumped away by the exhaust pump 54 to flow to the longitudinal tube 52 and flow toward the bottom of the longitudinal tube 52. During this process, the materials separated inside the separation chamber 5 will also pass through the longitudinal tube 52 and return to the feed pipe 4 again, and quickly enter the annular channel under the action of the airflow ejected by the pressurized nozzle 55, and continue to participate in shaping, thereby achieving the purpose of full-material, uninterrupted, cyclic shaping. Compared with the traditional method of collecting first and then feeding, part of the materials discharged with the airflow can enter the circulation channel 1 again in a shorter time to continue to participate in shaping, which has less impact on the uniformity of the material shaping effect. In addition, this equipment can not only automatically balance the internal airflow, but also make the separated materials automatically enter the annular channel again for continued shaping while balancing the airflow, effectively reducing the manual collection and feeding links, and shortening the time that the separated materials stay outside the annular channel, so that the shaping time of the separated materials and most of the materials in the annular channel is closer, thereby improving the consistency of the shaping effect of the whole material. The impeller 3 has originally retained a large amount of material in the annular channel, so only a very small amount of material can be discharged through the impeller 3 and then re-enter the annular channel. In addition, the particle size of a very small part of the material itself is smaller than the particle size of the material remaining inside the annular channel, so the time required for shaping is relatively less, which can further reduce the impact on the shaping consistency of the entire material.After the shaping is completed, the discharge port of the material can be designed according to the needs. The discharge port can be set at the bottom of the machine body so that the discharge port is connected to the lower arc section 11 of the annular channel, and a plug can be set at the discharge port to facilitate the sealing of the discharge port during the shaping work; a discharge port connected to the side wall of the longitudinal tube 52 can also be set, and the material is sucked into the separation chamber 5 through the exhaust pump 54, and finally the material is discharged from the discharge port set on the longitudinal tube 52; further, the discharge port can also be set at the bottom of the middle section of the feed pipe 4, so that the discharge port is located between the machine body and the longitudinal tube 52, and a plug also needs to be set in the discharge pipe.

[0027] Preferably, Figure 4 , Figure 6 As shown, the separation component 53 includes a confluence chamber 531, the top of which is connected to the air inlet pipe of the exhaust pump 54, and a plurality of filter bags 532 are provided at the bottom of the confluence chamber 531 for separating gas and material. The filter bag 532 can be made of a fiber bag or a cloth bag, and the bag mouth of the filter bag 532 is connected to the confluence chamber 531. The lower end of the filter bag 532 extends to the interior of the separation chamber 5. During operation, the airflow enters the confluence chamber 531 from the filter bag 532 under the suction of the exhaust pump 54, and then is discharged from the exhaust pump 54, while the material is separated outside the filter bag 532, so that the material remains in the separation chamber 5.

[0028] Preferably, Figure 1 , Figure 4 and Figure 6 As shown, a Laval tube 16 is provided at the lower end of the ascending section 12. With the structure of the Laval tube 16, the speed of the airflow and the material when ascending can be increased, and the influence of gravity on the speed of the material when ascending can be reduced, so that the material also has a sufficient speed during the ascending process, thereby improving the shaping effect of the material during the ascending period, and allowing the material to smoothly pass over the upper arc section 13, and also allowing the material to have a predetermined speed when passing through the upper arc section 13, so that most of the material can enter the blanking section 14 along the outer side of the upper arc section 13, thereby reducing the material entering the reflux chamber 15, reducing the workload of the impeller 3, and reducing the amount of material entering the separation chamber 5 through the impeller 3. And after passing through the Laval tube 16, the material will be more concentrated in the area of ​​the annular channel axis, which helps the air intake nozzle 2 at the rear to work on the material and improve the shaping efficiency. The Laval tube 16 is an independently manufactured pipe, which is arranged in the machine body by bonding and assembly.

[0029] Preferably, Figure 4 , Figure 6As shown, the lower arc section 11, the rising section 12, the upper arc section 13 and the blanking section 14 are all provided with an air intake nozzle 2 to ensure the consistency of the speed of the material at various locations in the annular channel. This solution can exist together with the solution of setting a Laval tube 16 or exist alone. The purpose of both is to make the material have a sufficient speed in the annular channel. The Laval tube 16 solution has a clearer position and purpose for accelerating the material. After increasing the rising speed of the material, the material can still have a predetermined speed to flow along the outer wall of the upper arc section 13 to the blanking section 14. Of course, the air intake nozzle 2 set in the upper arc section 13 also has the same function.

[0030] Preferably, Figure 5 , Figure 7 and Figure 8 As shown, a valve body 42 is provided in the middle section of the feed pipe 4. Specifically, the valve body 42 is located between the longitudinal pipe 52 and the body. The valve body 42 is a cylindrical structure, and its axis is perpendicular to the feed pipe 4. The valve body 42 is arranged to rotate around the axis. The valve body 42 is provided with a through hole 421 perpendicular to the axis. The valve body 42 is also provided with an inclined hole 422 spaced from the through hole 421. The inlet end of the inclined hole 422 is located on the side wall of the valve body 42, and the outlet end of the inclined hole 422 is located at the bottom of the valve body 42. Figure 6 , Figure 7 As shown, when the inlet end of the inclined hole 422 faces the end of the feed pipe 4, the inlet end of the inclined hole 422 is connected to the feed pipe 4, and the through hole 421 faces the side wall of the feed pipe 4. The side wall of the feed pipe 4 blocks both ends of the through hole 421. In this state, the material can be discharged through the inclined hole 422, so the inclined hole 422 is used as a discharge hole. Figure 4 , Figure 5 As shown, when either end of the through hole 421 faces the end of the feed pipe 4, both ends of the through hole 421 are connected to the feed pipe 4, and the inlet end of the inclined hole 422 faces the side wall of the feed pipe 4, and the side wall of the feed pipe 4 blocks the inlet end of the inclined hole 422. When the equipment is shaping the material, the valve body 42 is in this state, and the material added through the longitudinal tube 52 and the end of the feed pipe 4 enters the annular channel through the through hole 421; the valve body 42 can be rotated manually or by motor control.

[0031] Further preferably, Figure 5 and Figure 8As shown, the inner diameters at both ends of the through hole 421 are the same as the inner diameter of the feed pipe 4, and the middle section of the inner wall of the through hole 421 is formed with an arc-shaped protrusion in the axial direction, so that the inner diameter of the middle section of the through hole 421 is smaller than the inner diameters of the two ends of the through hole 421 and the feed pipe 4. After adopting this structural design, the material and the airflow ejected from the pressurized nozzle 55 will be compressed on the side of the through hole 421 toward the end of the feed pipe 4, and then the mixed fluid formed by the compressed airflow and the material will enter the middle section of the through hole 421 with a narrow cross-section. After passing through the middle section of the through hole 421, the mixed fluid will be accelerated, and the mixed material will be ejected quickly and accelerated into the annular channel, thereby shortening the retention time of the separated material outside the annular channel, making the shaping time of the material closer, and thus trying to unify the shaping degree of the material.

[0032] Preferably, Figure 1 , Figure 4 and Figure 6 As shown, a guide plate 17 is provided at the connection between the return channel 151 and the blanking section 14. The guide plate 17 is provided with a rotating shaft. The guide plate 17 is arranged to rotate around the rotating shaft. The rotating shaft is parallel to the rotation axis of the impeller 3. Figure 4 As shown, when the material is shaped, the guide plate 17 is in an inclined state, and its upper edge is located below the top surface of the reflux channel 151. The lower end of the guide plate 17 is inclined toward the outer side of the lower end of the blanking section 14. The lower end of the guide plate 17 is lower than the bottom surface of the reflux channel 151, and there is a gap between the guide plate 17 and the bottom surface of the reflux channel 151. In this state, when the material enters the blanking section 14 from the upper arc section 13, the difficulty of the material entering the reflux chamber 15 is increased due to the obstruction of the guide plate 17, thereby reducing the material entering the reflux chamber 15. In addition, the guide plate 17 extends downward to the bottom of the reflux channel 151. The material here is already far away from the reflux channel 151, so the volume of the material entering the reflux chamber 15 can be effectively reduced, thereby reducing the probability of the material being discharged from the annular channel, so as to improve the consistency of material shaping. Figure 6 As shown, when discharging, the guide plate 17 is rotated so that the upper end of the guide plate 17 contacts the bottom surface of the reflux channel 151, and the two sides and the lower end of the guide plate 17 contact the inner wall of the blanking section 14, and there is a gap between the guide plate 17 and the top surface of the reflux channel 151, so that the material can pass through and enter the impeller 3. When discharging, the speed of the impeller 3 can be reduced, or even the impeller 3 can be stopped, so that the material can smoothly enter the separation chamber 5, and then be discharged through the longitudinal pipe 52 and the inclined hole 422. Specifically, the guide plate 17 is manually rotated or controlled by a motor.

[0033] Preferably, Figures 1 to 3 As shown, a cavity 18 penetrating the front and rear end surfaces is provided in the inner circle of the machine body corresponding to the annular channel, so as to improve the heat dissipation effect of the whole machine body and reduce the overall mass and raw material consumption of the machine body.

[0034] As a preferred solution, Figures 1 to 3 As shown, for the convenience of manufacturing, the part of the body corresponding to the annular channel is set as a split structure, the part located at the front end of the body is set as the cover 101, and the part located at the rear end of the body is used as the main body 102. The separation chamber 5 and the main body 102 are an integrated structure, and the cover 101 and the main body 102 are connected by a hinge structure and locked with screws, so that the annular channel, the reflux chamber 15, and the reflux channel 151 are each half formed on the cover 101 and the main body 102 respectively.

[0035] As a further preferred structure, Figure 1 As shown, the impeller 3 and the guide plate 17 are both arranged on the machine cover.

[0036] As a further preference, the main body 102 and the cover 101 are both formed by casting.

[0037] Preferably, Figure 5 , Figure 7 As shown, at least two pressurizing nozzles 55 are provided along the circumference of the side wall of the longitudinal tube 52, and the axis of the airflow sprayed by the pressurizing nozzle 55 intersects at a point on the axis of the longitudinal tube 52. The airflow sprayed by the pressurizing nozzle 55 is used to shape the separated powder to shorten the shaping gap between the discharged powder and the powder remaining in the annular channel, so that the powder can not only be circulated and shaped in the annular channel, but also the separated material can continue to be circulated and shaped when it flows back through the longitudinal tube 52 and the feed pipe 4.

[0038] The above description is only a preferred embodiment of the present invention, and is not intended to be the only one or to limit the present invention. Those skilled in the art should understand that various changes or equivalent substitutions made to the present invention without departing from the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A full-material airflow shaping device, characterized in that: include: An annular channel formed inside the body, the annular channel comprising a lower arc section (11), an ascending section (12), an upper arc section (13) and a blanking section (14), the annular channel being in a vertical state; A plurality of groups of air intake nozzles (2) are provided along an annular trajectory on the side wall of the annular channel, and each group of air intake nozzles (2) is provided with a plurality of air intake nozzles (2) in a circumferential array along the same cross section of the annular channel, and airflows ejected by the air intake nozzles (2) flow along the same trajectory and direction in the annular channel; A reflux chamber (15) is formed at a position adjacent to the upper arc section (13) and the blanking section (14) of the machine body. The reflux chamber (15) is formed on the inner side of the annular channel, and a reflux channel (151) is formed between the reflux chamber (15) and the inner side wall of the annular channel. A discharge channel (152) communicating with the reflux chamber (15) is provided on the rear wall of the machine body. An impeller (3) is provided inside the reflux chamber (15); a discharge end of the impeller (3) is in communication with a discharge channel (152); and a grading motor (31) is provided on the front end surface of the machine body for driving the impeller (3) to rotate; A feed pipe (4) is provided through the side wall of the machine body corresponding to the lower arc section (11), and the feed direction thereof is consistent with the direction of gas flow inside the annular channel. A control valve (41) is provided at the end of the feed pipe (4); A separation chamber (5) is provided on one side of the machine body corresponding to the annular channel and located above the feed pipe (4). The interior of the separation chamber (5) is communicated with the discharge channel (152) via a connecting pipe (51). A longitudinal pipe (52) communicating with the feed pipe (4) is provided at the bottom of the separation chamber (5). The separation chamber (5) is provided with a separation assembly (53) for separating material and gas. The separation assembly (53) is provided with an exhaust pump (54). The separated material enters the feed pipe (4) via the longitudinal pipe (52). A pressurizing nozzle (55) is provided on the side wall of the longitudinal pipe (52).

2. The full-material airflow shaping device according to claim 1, characterized in that: The separation assembly (53) comprises a confluence chamber (531), the top of which is connected to the air inlet pipe of the exhaust pump (54); a plurality of filter bags (532) are provided at the bottom of the confluence chamber (531) for separating gas and material; the bag openings of the filter bags (532) are connected to the confluence chamber (531); and the lower ends of the filter bags (532) extend into the interior of the separation chamber (5).

3. The full-material airflow shaping device according to claim 1, characterized in that: A Laval tube (16) is provided at the lower end of the ascending section (12).

4. The full-material airflow shaping device according to claim 1, characterized in that: The lower arc section (11), the ascending section (12), the upper arc section (13) and the blanking section (14) are all provided with air intake nozzles (2).

5. The full-material airflow shaping device according to claim 1, characterized in that: A valve body (42) is provided in the middle section of the feed pipe (4). The valve body (42) is a cylindrical structure, the axis of which is perpendicular to the feed pipe (4), and the valve body (42) is arranged to rotate around the axis. The valve body (42) is provided with a through hole (421) perpendicular to the axis, and the valve body (42) is further provided with an inclined hole (422) spaced from the through hole (421). The inlet end of the inclined hole (422) is located on the side wall of the valve body (42), and the outlet end of the inclined hole (422) is located at the bottom of the valve body (42); when the inlet of the inclined hole (422) is When the end of the through hole (421) faces the end of the feed pipe (4), the inlet end of the inclined hole (422) is in communication with the feed pipe (4), the through hole (421) faces the side wall of the feed pipe (4), and the side wall of the feed pipe (4) blocks the two ends of the through hole (421); when any one end of the through hole (421) faces the end of the feed pipe (4), the two ends of the through hole (421) are in communication with the feed pipe (4), the inlet end of the inclined hole (422) faces the side wall of the feed pipe (4), and the side wall of the feed pipe (4) blocks the inlet end of the inclined hole (422).

6. The full-material airflow shaping device according to claim 5, characterized in that: The inner diameters of the two ends of the through hole (421) are the same as the inner diameter of the feed pipe (4), and the middle section of the inner wall of the through hole (421) is formed with an arc-shaped protrusion in the axial direction, so as to make the inner diameter of the middle section of the through hole (421) smaller than the inner diameters of the two ends of the through hole (421) and the feed pipe (4).

7. The full-material airflow shaping device according to claim 5, characterized in that: A guide plate (17) is provided at the connection point between the reflux channel (151) and the blanking section (14), the guide plate (17) being provided with a rotating shaft, the guide plate (17) being rotatably arranged around the rotating shaft, and the rotating shaft being parallel to the rotation axis of the impeller (3); when the material is shaped, the guide plate (17) is in an inclined state, and its upper edge is located below the top surface of the reflux channel (151), the lower end of the guide plate (17) is inclined toward the outer side of the lower end of the blanking section (14), the lower end of the guide plate (17) is lower than the bottom surface of the reflux channel (151), and there is a gap between the guide plate (17) and the bottom surface of the reflux channel (151); when the material is discharged, the upper end of the guide plate (17) contacts the bottom surface of the reflux channel (151), the two sides and the lower end of the guide plate (17) contact the inner wall of the blanking section (14), and there is a gap between the guide plate (17) and the top surface of the reflux channel (151).

8. The full-material airflow shaping device according to claim 1, characterized in that: The inner circle of the machine body corresponding to the annular channel is provided with a cavity (18) penetrating the front and rear end surfaces.

9. The full-material airflow shaping device according to claim 1, characterized in that: The portion of the machine body corresponding to the annular channel is configured as a bisected structure, the portion located at the front end of the machine body is configured as a machine cover (101), the portion located at the rear end of the machine body is configured as a main body (102), the separation chamber (5) and the main body (102) are an integrated structure, and the machine cover (101) and the main body (102) are connected by a hinged structure and are locked by screws.

10. The full-material airflow shaping device according to claim 1, characterized in that: At least two pressurizing nozzles (55) are provided along the circumference of the side wall of the longitudinal tube (52), and the axes of the airflows sprayed by the pressurizing nozzles (55) intersect at a point on the axis of the longitudinal tube (52).

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