Suction pneumatic conveying equipment

Abstract

The present invention discloses a suction pneumatic conveying device, which relates to the technical field of pneumatic conveying devices. It includes a set of adjustable flow guiding devices installed in the conveying pipeline. The adjustable flow guiding device adjusts the cross-sectional area of the fluid in the conveying pipeline by changing its own angle to change the flow trajectory of the gas. By installing adjustable flow guiding devices at the joints of each module of the conveying pipeline, the impact of materials on the inner wall of the pipeline under the action of high-speed airflow is effectively reduced, and the accumulation of materials in the pipeline is avoided, thereby improving the efficiency and stability of the pneumatic conveying device. Through the dynamic angle adjustment of the adjustable flow guiding device, the flow direction and speed of the fluid can be dynamically adjusted, the formation of eddy current areas is reduced, the distribution of the fluid in the pipeline is made more uniform, and the risk of particulate deposition and pipeline erosion is significantly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of pneumatic conveying equipment, especially the suction pneumatic conveying equipment. Background Art

[0002] Suction pneumatic conveying is a system that uses the negative pressure generated by the air flow in the pipeline to move materials. This system is widely used in multiple industries such as food processing, pharmaceuticals, and chemicals, especially suitable for materials that require gentle handling or applications that need to collect materials from multiple points. The pneumatic conveying system transports materials from one location to another through a pipeline, and its core lies in using the kinetic energy of the air flow to push the materials forward. However, traditional pneumatic conveying systems have many problems in practical applications, especially in the process of material transportation, material accumulation, pipeline wear, and cleaning difficulties are prone to occur.

[0003] Chinese Patent with the publication number CN116573421A discloses a pneumatic conveying equipment, including a blanking bucket, a first conveying pipeline, a drying bin, and a second conveying pipeline. The bottom of the blanking bucket is connected to a blanking adjustment bin. An adjustment roller is provided in the blanking adjustment bin. The shaft part of the adjustment roller is rotatably connected to the inner wall of the blanking adjustment bin. A material distribution plate is installed on the adjustment roller. The material distribution plates are arranged in a circumferential array along the center of the adjustment roller. A cross bar is installed at the end of the material distribution plate. End rollers are rollingly connected to the cross bar. The bottom of the blanking adjustment bin is connected to the top of the blanking pipeline. The bottom of the blanking pipeline is connected to the first conveying pipeline. The blanking pipeline is perpendicular to the first conveying pipeline. The silicone rubber elastomer inside the elbow section, after colliding with the material, uses its own elasticity to eject the material, reducing the kinetic energy loss of the material. At the same time, when the elbow section is blocked, after heating the pipeline, the inner diameter of the pipeline expands, increasing the flow space of the material, and the silicone rubber elastomer expands when heated, squeezing the material and destroying the stable structure of the accumulated material, which is beneficial to pipeline dredging.

[0004] Traditional pneumatic conveying equipment has the following problems: First, at the bending part of the conveying pipeline, due to the inertial effect of the material, it is easy to accumulate at the elbow, resulting in pipeline blockage and affecting the conveying efficiency. Second, when the high-speed air flow carries the material through the pipeline, it will erode the inner wall of the pipeline, especially at the elbow part, where the wear is particularly serious, shortening the service life of the pipeline. In the above patent, by using the silicone rubber elastomer to squeeze the material and destroy the stable structure of the accumulated material, the problem of pipeline blockage is solved. However, when the pneumatic conveying equipment is under high or low pressure, the silicone rubber elastomer deforms due to the pressure difference, which may lead to problems such as decreased sealing performance at the connection, increased wear, and increased blockage risk.

[0005] Therefore, the present invention proposes a suction pneumatic conveying equipment to solve the above problems. Summary of the Invention

[0006] In view of the problems existing in the above-mentioned prior art, the present invention is proposed.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: a suction pneumatic conveying device, comprising: a pneumatic conveying device body, which includes a feed hopper, a cyclone separator, and a conveying pipeline, and the materials in the feed hopper flow into the cyclone separator through the conveying pipeline;

[0008] A set of adjustable flow guiding devices are installed in the conveying pipeline, and the adjustable flow guiding devices adjust the cross-sectional area of the fluid in the conveying pipeline by changing their own angles to change the flow trajectory of the gas.

[0009] As a preferred solution of the suction pneumatic conveying device of the present invention, wherein: the adjustable flow guiding device includes an angle adjustment module, a linkage module, a cleaning module, and a driving module, the driving module drives the cleaning module to rotate, drives the linkage module to engage with the angle adjustment module, and then adjusts the angle of the angle adjustment module to reduce the cross-sectional area of the fluid flowing through the conveying pipeline.

[0010] As a preferred solution of the suction pneumatic conveying device of the present invention, wherein: the angle adjustment module includes a flange plate, and a plurality of rectangular strip blocks protrude inward from the flange plate. A set of rotating rods are inserted horizontally between every two adjacent rectangular strip blocks, and guide vanes that rotate synchronously with the rotating rods are arranged on the surface of the rotating rods. Annular gears are fixed at both ends of the rotating rods;

[0011] A plurality of rectangular grooves are recessed outward on the inner side of the flange plate, and each rectangular groove is located on the center line of the guide vane.

[0012] As a preferred solution of the suction pneumatic conveying device of the present invention, wherein: the linkage module includes an internally threaded ring, and a plurality of traction columns extend from the end of the internally threaded ring. The internally threaded ring is fixedly connected to a plurality of arc-shaped guide pieces through the plurality of traction columns. Two rows of saw teeth protrude outward from the inner wall of the arc-shaped guide piece, and the saw teeth are arranged in meshing transmission with the annular gear.

[0013] As a preferred solution of the suction pneumatic conveying device of the present invention, wherein: the arc-shaped guide piece includes an arc-shaped piece and a guide post that are integrally connected, and the guide post is clamped inside the rectangular groove so that the arc-shaped guide piece linearly displaces along the axis direction of the rectangular groove.

[0014] As a preferred solution of the suction pneumatic conveying device of the present invention, wherein: the cleaning module includes an externally threaded ring, an annular card slot is opened at the tail end of the externally threaded ring, and an annular cartridge is clamped in the annular card slot, and the externally threaded ring is fixed to the inner wall of the conveying pipeline through the annular cartridge.

[0015] As a preferred embodiment of the suction and delivery pneumatic conveying device of the present invention, the following is provided: Multiple triangular teeth are fixed to the inner wall of the external thread ring. The multiple triangular teeth pass through the annular clamping cylinder and extend outwards. At one end of the external thread ring away from the triangular teeth, multiple uniformly distributed bristles are fixedly inserted. The multiple bristles extend to the surface of the arc-shaped guide piece.

[0016] As a preferred embodiment of the suction and delivery pneumatic conveying device of the present invention, the following is provided: The driving module includes a circular clamping roller that penetrates and engages with the side wall of the conveying pipeline. At both ends of the circular clamping roller, a set of driven gears are fixedly connected. A set of driving motors are installed on the outer wall of the conveying pipeline. At the top of the driving motor, a driving gear for driving the rotation of the driven gear is fixedly connected. The driving gear drives the rotation of the external thread ring through the driven gear and the circular clamping roller.

[0017] As a preferred embodiment of the suction and delivery pneumatic conveying device of the present invention, the following is provided: The angle adjustment module, the linkage module, and the cleaning module form a driven module. The number of the driven modules is multiple. Multiple lead balls are installed inside the conveying pipeline. A traction wire is threaded through the lead balls. The traction wire is wound around multiple driven modules to enable the common displacement of the multiple driven modules. A reset module is installed between the multiple driven modules. The elastic force of the reset module drives the driven module to reset.

[0018] As a preferred embodiment of the suction and delivery pneumatic conveying device of the present invention, the following is provided: The conveying pipeline includes an elbow one, an intermediate material conveying pipe, an elbow two, and a tail material conveying pipe that are sequentially connected. The elbow one, the intermediate material conveying pipe, the elbow two, and the tail material conveying pipe are all connected by flanges.

[0019] The elbow one, the intermediate material conveying pipe, the elbow two, and the tail material conveying pipe are all cut along the axial direction to form a split symmetrical structure.

[0020] Advantages of the present invention: By installing an adjustable flow guiding device at the connection of each module of the modular conveying pipeline, the present invention effectively reduces the impact of materials on the inner wall of the pipeline under the action of high-speed air flow, avoids the accumulation of materials in the pipeline, thereby improving the efficiency and stability of the pneumatic conveying equipment; through the dynamic angle adjustment of the adjustable flow guiding device, the flow direction and speed of the fluid can be dynamically adjusted, reducing the formation of eddy current areas, making the distribution of the fluid in the pipeline more uniform, and significantly reducing the risk of particulate deposition and pipeline erosion. Among them, the adjustable flow guiding device includes an angle adjustment module, a linkage module, a cleaning module, and a driving module. The introduction of the linkage module and the cleaning module further enhances the self-maintenance ability of the pneumatic conveying equipment. The linkage module realizes the unified adjustment of the angle adjustment module through precise mechanical transmission, ensuring the smooth flow of the fluid during the entire conveying process. The cleaning module can automatically remove the deposits on the inner wall of the pipeline during the operation of the pneumatic conveying equipment, keep the pipeline clean, extend the service life of the equipment, and reduce the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of a suction pneumatic conveying equipment;

[0023] Figure 2 It is a schematic diagram of the overall structure of the adjustable flow guiding device in the present invention;

[0024] Figure 3 It is a detailed structure diagram of the driving module in the present invention;

[0025] Figure 4 It is a detailed structure diagram of the reset module in the present invention;

[0026] Figure 5 It is an exploded view of a partial structure of the adjustable flow guiding device in the present invention;

[0027] Figure 6 It is an axonometric view of a partial structure of the adjustable flow guiding device in the present invention;

[0028] Figure 7 It is a front view of the overall structure of the angle adjustment module in the present invention;

[0029] Figure 8 It is a detailed structure diagram of the linkage module in the present invention.

[0030] Reference numerals: 100, suction nozzle; 200, suction section pipeline; 300, feed hopper; 400, conveying pipeline; 410, first elbow; 420, intermediate material conveying pipe; 430, second elbow; 431, lead ball; 432, arc-shaped half pipe; 440, tail material conveying pipe; 441, semi-circular pipe; 500, cyclone separator; 600, discharger; 700, adjustable flow guiding device; 710, angle adjustment module; 711, flange; 712, rectangular strip; 713, rotating rod; 714, flow guiding vane; 715, annular gear; 716, rectangular groove; 720, linkage module; 721, internal thread ring; 722, traction column; 723, arc-shaped guiding piece; 7231, arc-shaped piece; 7232, guiding column; 724, saw tooth; 730, cleaning module; 731, external thread ring; 732, triangular tooth; 733, brush hair; 734, annular clamping groove; 740, driving module; 741, circular clamping roller; 742, driven gear; 743, driving gear; 744, driving motor; 750, traction line; 760, reset module; 761, positioning ring; 762, elastic telescopic ball rod; 770, annular clamping cylinder; 800, exhaust section pipeline; 900, Roots vacuum pump. Detailed implementation manners

[0031] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given with reference to the accompanying drawings of the specification.

[0032] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0033] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present invention. The "in one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or alternative embodiment that mutually excludes other embodiments.

[0034] Embodiment 1

[0035] Refer to Figure 1 、 Figure 2, which is the first embodiment of the present invention. This embodiment provides a suction pneumatic conveying device, including a suction nozzle 100, a suction section pipeline 200, a feed hopper 300, a conveying pipeline 400, a cyclone separator 500, a discharger 600, an exhaust section pipeline 800, and a Roots vacuum pump 900. The suction nozzle 100 is connected to the intake end of the feed hopper 300 through the suction section pipeline 200. The outlet end of the feed hopper 300 is connected to the cyclone separator 500 through the conveying pipeline 400. The discharger 600 is located at the bottom of the cyclone separator 500 for receiving the materials separated inside the cyclone separator 500. The exhaust section pipeline 800 is installed at the top of the cyclone separator 500. The cyclone separator 500 is connected to the Roots vacuum pump 900 through the exhaust section pipeline 800.

[0036] First, after the Roots vacuum pump 900 is started, a negative pressure environment will be established within the entire suction pneumatic conveying device, and this negative pressure is guided outside the pneumatic conveying device by the Roots vacuum pump 900. Subsequently, air enters the suction section pipeline 200 through the suction nozzle 100 and then enters the pneumatic conveying device, while the materials are sucked into the pneumatic conveying device through the feed hopper 300. After the materials enter the pneumatic conveying device, they enter the cyclone separator 500 through the conveying pipeline 400. Under the action of the negative pressure, the materials enter the cyclone separator 500 and generate a swirling motion, separating the materials from the air.

[0037] The cyclone separator 500 separates the materials from the airflow by the action of centrifugal force. The materials fall into the lower discharger 600 due to gravity, while the clean gas continues to be discharged back into the atmosphere through the exhaust section pipeline 800 and the Roots vacuum pump 900. The discharger 600 is responsible for storing and discharging materials to complete the entire conveying process.

[0038] A set of adjustable flow guiding devices 700 is installed inside the conveying pipeline 400. The adjustable flow guiding devices 700 adjust the cross-sectional area of the fluid inside the conveying pipeline 400 by changing their own angles to change the flow trajectory of the gas. Its main function is to reduce the impact on the inner wall of the pipeline caused by the high-speed airflow during the conveying process of the materials, and at the same time, it can effectively prevent the accumulation of materials in the pipeline, thereby improving the conveying efficiency and stability of the pneumatic conveying device.

[0039] The conveying pipeline 400 adopts a "semicircular pipe butt joint" design.

[0040] Specifically, the conveying pipeline 400 includes an elbow one 410, an intermediate material conveying pipe 420, an elbow two 430, and a tail material conveying pipe 440 that are connected in sequence. The elbow one 410, the intermediate material conveying pipe 420, the elbow two 430, and the tail material conveying pipe 440 are all connected by flange connections.

[0041] The first elbow pipe 410, the intermediate material conveying pipe 420, the second elbow pipe 430, and the tail material conveying pipe 440 are all cut along the axial direction to form a split symmetric structure.

[0042] Specifically, referring to Figure 1 and Figure 2 As shown, the tail material conveying pipe 440 includes two semi-circular pipes 441 designed symmetrically, and the second elbow pipe 430 includes two arc-shaped half pipes 432 designed symmetrically. One semi-circular pipe 441 is connected to the two arc-shaped half pipes 432 through a flange, and then another semi-circular pipe 441 is connected according to the surface of the semi-circular pipe 441. Such an installation and connection method can ensure the tightness, sealing property, and self-locking property of the split pipes during connection, without installing fasteners on the outer surfaces of the first elbow pipe 410, the intermediate material conveying pipe 420, the second elbow pipe 430, and the tail material conveying pipe 440 to ensure the tightness of the symmetrically designed conveying pipe 400.

[0043] To ensure the tight connection of the split first elbow pipe 410, intermediate material conveying pipe 420, second elbow pipe 430, and tail material conveying pipe 440 with a symmetric design, the connection between the first elbow pipes 410, the connection between the intermediate material conveying pipes 420, the connection between the second elbow pipes 430, and the connection between the tail material conveying pipes 440 can be modified to plug-in connection, or installing a sealing strip on the connection surface can ensure the tight connection.

[0044] The conveying pipe 400 adopts a "semi-pipe butt joint" design. The semi-pipe butt joint method is convenient for quick assembly, modular disassembly and assembly, and integral disassembly and assembly on-site. Especially when it is necessary to clean or repair the inside of the pipe, the damaged pipe can be opened more conveniently and directly; on the other hand, the flange connection not only ensures the tight connection between each section of the pipe, but also enables quick replacement when the pipe is damaged or worn, reducing the downtime and maintenance cost.

[0045] In addition, by designing the conveying pipe 400 modularly, the configuration and length of the pipe can be flexibly adjusted to meet the conveying requirements under different working conditions; the "semi-pipe butt joint" design not only improves the maintainability of the pneumatic conveying equipment, but also enhances its adaptability in complex application environments.

[0046] Embodiment 2

[0047] Referring to Figures 2 to 8As shown, this is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The difference is that the adjustable flow guiding device 700 includes an angle adjustment module 710, a linkage module 720, a cleaning module 730, and a driving module 740. The driving module 740 drives the cleaning module 730 to rotate, forcing the linkage module 720 to engage with the angle adjustment module 710, and then adjusting the angle of the angle adjustment module 710 to reduce the fluid flow cross-sectional area in the tail material conveying pipe 440.

[0048] The angle adjustment module 710 includes a flange 711 clamped between the second elbow 430 and the tail material conveying pipe 440. A plurality of rectangular strips 712 protrude inward from the flange 711. A set of rotating rods 713 are horizontally inserted between every two adjacent rectangular strips 712. And flow guiding vanes 714 that rotate synchronously with the rotating rods 713 are arranged on the surfaces of the rotating rods 713. Annular gears 715 are fixed at both ends of the rotating rods 713.

[0049] Among them, the plurality of rectangular strips 712 are evenly distributed on the inner side of the flange 711.

[0050] Among them, the design of the flow guiding vanes 714 is to change the direction of the airflow, so as to achieve the purpose of adjusting the inner diameter of the pipeline.

[0051] Among them, annular gears 715 are fixed at both ends of the rotating rods 713, which enables the rotating rods 713 to adjust the angles of the flow guiding vanes 714 by rotating. By externally forcing the annular gears 715 to rotate to make the rotating rods 713 rotate synchronously, the angles of the flow guiding vanes 714 relative to the pipeline center line are changed, thereby changing the flow direction and speed of the airflow.

[0052] Specifically, angle adjustment modules 710 are installed between the first elbow 410 and the intermediate material conveying pipe 420, between the intermediate material conveying pipe 420 and the second elbow 430, and between the second elbow 430 and the tail material conveying pipe 440. When the fluid enters the second elbow 430 from the intermediate material conveying pipe 420 or the suction section pipeline 200 enters the inside of the first elbow 410, due to inertia, it tends to flow along the original straight line direction, resulting in a higher speed on the outer side of the elbow and a lower speed on the inner side of the elbow. As a result, eddy current areas are generated inside the first elbow 410 and the second elbow 430, increasing the risk of solid particle deposition in the fluid. At the same time, the material will impact the first elbow 410 and the second elbow 430, causing erosion of the inner wall of the elbow. The flow guiding vanes 714 guide the fluid to enter the first elbow 410 and the second elbow 430 in a smoother manner, reducing the lateral velocity component of the fluid when entering the elbow, thereby reducing the centrifugal separation effect.

[0053] The change in the angle of the guide plate 714 adjusts the angle at which the fluid enters the elbow, plays a guiding role, controls the flow path of the fluid, reduces the size of the eddy zone, makes the fluid more evenly distributed in the pipe cross section, and reduces the deposition of particulate matter in the fluid; at the same time, the change in the angle of the guide plate 714 adjusts the velocity distribution of the fluid entering the elbow, reduces the formation of local high-pressure areas, and reduces erosion caused by uneven flow velocity.

[0054] A plurality of rectangular grooves 716 are recessed outwardly from the inner side of the flange 711 , and each rectangular groove 716 is located on the center line of the guide plate 714 .

[0055] The linkage module 720 includes an internal threaded ring 721, and a plurality of traction columns 722 extend from the end of the internal threaded ring 721. The internal threaded ring 721 is fixedly connected to a plurality of arc-shaped guide plates 723 through the plurality of traction columns 722. The inner walls of the arc-shaped guide plates 723 protrude outward to form two rows of saw teeth 724, and the saw teeth 724 are meshed with the ring gear 715 for transmission.

[0056] Among them, the arc guide piece 723 includes an arc piece 7231 and a guide column 7232 which are connected in an integral manner. The guide column 7232 is engaged in the rectangular groove 716 so that the arc guide piece 723 can be linearly displaced along the axial direction of the rectangular groove 716. During the linear displacement of the arc guide piece 723, the saw teeth 724 are driven to move to engage with the ring gear 715, and the rotating rod 713 fixedly connected to the ring gear 715 rotates, thereby changing the angle of the guide piece 714 to change the cross-sectional area of ​​the fluid flow in the tail material conveying pipe 440.

[0057] The two sets of saw teeth 724 are at the same distance from the guide column 7232. When the arc guide piece 723 is pulled, the arc guide piece 723 gives the same driving force to the ring gear 715 through the two sets of saw teeth 724. Under the joint action of the two sets of ring gears 715, the rotating rod 713 rotates smoothly.

[0058] The cleaning module 730 includes an external thread ring 731 , at the rear end of which an annular groove 734 is formed, and an annular cartridge 770 is engaged in the annular groove 734 . The external thread ring 731 is fixed to the inner wall of the rear material conveying pipe 440 through the annular cartridge 770 .

[0059] A plurality of triangular teeth 732 are fixed to the inner wall of the external threaded ring 731 , and the plurality of triangular teeth 732 pass through the annular cartridge 770 and extend outward. A plurality of evenly distributed bristles 733 are fixedly inserted at one end of the external threaded ring 731 away from the triangular teeth 732 , and the plurality of bristles 733 extend forward to the surface of the arc-shaped guide piece 723 .

[0060] The external thread ring 731 is subjected to external force and rotates with the axis center of the annular cartridge 770 as the center line.

[0061] Among them, the external thread ring 731 and the internal thread ring 721 are helically connected. The external thread ring 731 and the internal thread ring 721 rotate relative to each other and displace. Among them, due to the internal thread ring 721 being restricted by the traction column 722 and the arc-shaped guide piece 723, the internal thread ring 721 only undergoes linear displacement, that is, the external thread ring 731 rotates under the action of an external force and rotates but cannot generate displacement under the restriction of the annular cartridge 770.

[0062] The driving module 740 includes a circular roller 741 that penetrates and engages with the side wall of the tail material conveying pipe 440. A set of driven gears 742 are fixedly connected to both ends of the circular roller 741. A set of driving motors 744 are installed on the outer wall of the tail material conveying pipe 440. A driving gear 743 for driving the driven gear 742 to rotate is fixedly connected to the top of the driving motor 744. The driving gear 743 drives the external thread ring 731 to rotate through the driven gear 742 and the circular roller 741.

[0063] Working principle: The driving module 740 is the power source of the entire device. When the driving motor 744 is started, through the meshing action of the driving gear 743 and the driven gear 742, the circular roller 741 starts to rotate. The circular roller 741 is fixed on the side wall of the tail material conveying pipe 440 and drives the rotation of the external thread ring 731 through the rotation of another driven gear 742 located inside the tail material conveying pipe 440.

[0064] The external thread ring 731 is fixed on the inner wall of the tail material conveying pipe 440 through the annular slot 734 and the annular cartridge 770. The rotation of the external thread ring 731 is restricted by the annular cartridge 770 and will not move along the axial direction of the tail material conveying pipe 440. During the rotation of the external thread ring 731, the brush 733 is driven to rotate, and thus the rotating brush 733 cleans the inner wall of the tail material conveying pipe 440, the gap of the linkage module 720, and the angle adjustment module 710.

[0065] The external thread ring 731 and the internal thread ring 721 are arranged in a helical connection. When the external thread ring 731 rotates, due to the interaction of the internal and external threads, the internal thread ring 721 will move along the axial direction of the tail material conveying pipe 440. The axial movement of the internal thread ring 721 is transmitted to the arc-shaped guide piece 723 through multiple traction columns 722. Two rows of saw teeth 724 are provided on the arc-shaped guide piece 723, and these saw teeth 724 mesh with the annular gear 715 in the angle adjustment module 710. When the arc-shaped guide piece 723 moves axially, the saw teeth 724 will also move accordingly, and then mesh with the annular gear 715, causing the annular gear 715 to rotate.

[0066] The annular gears 715 are fixed at both ends of the rotating rod 713. Therefore, when the annular gears 715 rotate, the rotating rod 713 also rotates accordingly. The rotation of the rotating rod 713 drives the deflector vanes 714 fixed thereon to rotate, thereby changing the angle of the deflector vanes 714 relative to the pipe center line. The rotation angle of the deflector vanes 714 adjusts the angle of the fluid entering the elbow, plays a guiding role, controls the flow path of the fluid, reduces the size of the eddy current area, makes the fluid more evenly distributed within the pipe cross-section, and reduces the deposition risk of particulate matter in the fluid. In addition, the angle adjustment of the deflector vanes 714 also changes the velocity distribution of the fluid entering the elbow, reduces the formation of local high-pressure areas, and reduces the erosion phenomenon caused by uneven flow velocity.

[0067] Embodiment 3

[0068] Refer to Figures 2 to 8 As shown, this is the third embodiment of the present invention. This embodiment is based on the previous embodiment. The difference is that the angle adjustment module 710, the linkage module 720, and the cleaning module 730 form a driven module. The driven module is located at the connection between the first elbow 410 and the feed hopper 300, the connection between the first elbow 410 and the intermediate material conveying pipe 420, the connection between the intermediate material conveying pipe 420 and the second elbow 430, and the connection between the second elbow 430 and the tail material conveying pipe 440. A plurality of lead balls 431 are installed inside the first elbow 410, the intermediate material conveying pipe 420, and the second elbow 430. A traction wire 750 is threaded through the lead balls 431. The traction wire 750 is wound around a plurality of driven modules and causes the plurality of driven modules to move together.

[0069] A reset module 760 is assembled inside the first elbow 410, the intermediate material conveying pipe 420, and the second elbow 430. The reset module 760 includes a positioning ring 761 and a plurality of elastic telescopic ball rods 762 distributed on the surface of the positioning ring 761. The positioning ring 761 is clamped in the annular slot 734 at the tail end of the external thread ring 731 through the elastic telescopic ball rods 762. The elastic telescopic ball rod 762 includes an integrally connected elastic telescopic rod and a ball head located at the end of the elastic telescopic rod. The ball head is clamped in the annular slot 734.

[0070] Specifically, a plurality of lead balls 431 are installed inside the first elbow 410, the intermediate material conveying pipe 420, and the second elbow 430. A traction wire 750 is threaded through these lead balls 431. The traction wire 750 is wound around a plurality of driven modules. When the driven module located at the connection between the second elbow 430 and the tail material conveying pipe 440 acts, the other driven modules move together through the traction wire 750, thereby synchronously adjusting the angles of the deflector vanes 714 at multiple positions, so as to ensure the balanced adjustment of the fluid flow characteristics within the entire pneumatic conveying device.

[0071] In addition, a reset module 760 is also assembled inside the first elbow pipe 410, the intermediate material conveying pipe 420, and the second elbow pipe 430. The reset module 760 includes a positioning ring 761 and a plurality of elastic telescopic ball rods 762 distributed on the surface of the positioning ring 761. The positioning ring 761 is engaged in an annular slot 734 at the tail end of the external thread ring 731 through the elastic telescopic ball rods 762. The elastic telescopic ball rods 762 ensure that the traction wire 750 is always in a taut state. When the driving module 740 is not required to drive, through the elastic force of the elastic telescopic ball rods 762, the driven module returns to rotation or returns to the initially set angle, thereby realizing the automatic reset function.

[0072] By introducing the lead ball 431 and the traction wire 750, the coordinated action of multiple driven modules is realized, ensuring a consistent flow guiding effect of the fluid at each elbow pipe. In addition, the design of the reset module 760 ensures that the driven module can automatically return to the preset position without external driving force, reducing the need for manual intervention and improving the automation level of the pneumatic conveying equipment. This design not only improves the efficiency in the fluid transmission process, but also enhances the reliability and stability of the pneumatic conveying equipment and reduces the maintenance cost.

[0073] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. Suction-type pneumatic conveying equipment, characterized in that: include: A pneumatic conveying equipment body, comprising a feed hopper (300), a cyclone separator (500) and a conveying pipeline (400), wherein the material in the feed hopper (300) flows into the cyclone separator (500) via the conveying pipeline (400); An adjustable flow guiding device (700) is installed in the delivery pipeline (400), and the adjustable flow guiding device (700) adjusts the cross-sectional area of ​​the fluid in the delivery pipeline (400) by changing its own angle, thereby changing the flow trajectory of the gas; The adjustable flow guiding device (700) comprises an angle adjustment module (710), a linkage module (720), a cleaning module (730) and a driving module (740); the driving module (740) drives the cleaning module (730) to rotate, driving the linkage module (720) to engage with the angle adjustment module (710), thereby adjusting the angle of the angle adjustment module (710) to reduce the cross-sectional area of ​​the fluid flow in the delivery pipeline (400); The angle adjustment module (710) comprises a flange (711), a plurality of rectangular strips (712) protruding inwardly from the flange (711), a group of rotating rods (713) being inserted horizontally between each two adjacent rectangular strips (712), and guide vanes (714) rotating synchronously with the rotating rods (713) being arranged on the surfaces of the rotating rods (713), and ring gears (715) being fixed at both ends of the rotating rods (713); A plurality of rectangular grooves (716) are recessed outwardly on the inner side of the flange (711), and each of the rectangular grooves (716) is located on the center line of the guide plate (714); The linkage module (720) comprises an internal threaded ring (721), a plurality of traction columns (722) extending from the end of the internal threaded ring (721), the internal threaded ring (721) being fixedly connected to a plurality of arc-shaped guide pieces (723) via the plurality of traction columns (722), the inner walls of the arc-shaped guide pieces (723) protruding outwards form two rows of saw teeth (724), and the saw teeth (724) are arranged in meshing transmission with the ring gear (715); The arc-shaped guide piece (723) comprises an arc-shaped piece (7231) and a guide column (7232) connected in an integral manner, and the guide column (7232) is engaged inside the rectangular groove (716) so that the arc-shaped guide piece (723) is linearly displaced along the axial direction of the rectangular groove (716); The cleaning module (730) comprises an external threaded ring (731), an annular clamping groove (734) is provided at the rear end of the external threaded ring (731), an annular clamping sleeve (770) is clamped in the annular clamping groove (734), and the external threaded ring (731) is fixed to the inner wall of the conveying pipe (400) via the annular clamping sleeve (770); A plurality of triangular teeth (732) are fixed to the inner wall of the external thread ring (731), the plurality of triangular teeth (732) pass through the annular cartridge (770) and extend outward, a plurality of evenly distributed bristles (733) are fixedly inserted at one end of the external thread ring (731) away from the triangular teeth (732), and the plurality of bristles (733) extend to the surface of the arc-shaped guide piece (723); The driving module (740) comprises a circular clamping roller (741) penetrating through and clamped on the side wall of the conveying pipe (400); a group of driven gears (742) are fixedly connected at both ends of the circular clamping roller (741); a group of driving motors (744) are installed on the outer wall of the conveying pipe (400); and a driving gear (743) for driving the driven gear (742) to rotate is fixedly connected to the top end of the driving motor (744); the driving gear (743) drives the external threaded ring (731) to rotate through the driven gear (742) and the circular clamping roller (741).

2. The suction-type pneumatic conveying equipment according to claim 1, characterized in that: The angle adjustment module (710), the linkage module (720) and the cleaning module (730) form a driven module, and the number of the driven modules is multiple. A plurality of lead balls (431) are installed inside the conveying pipe (400), and a traction line (750) is passed through the inside of the lead ball (431). The traction line (750) is wound around the multiple driven modules and enables the multiple driven modules to move together. A reset module (760) is installed between the multiple driven modules, and the driven modules are reset by the elastic force of the reset module (760).

3. The suction-type pneumatic conveying device according to claim 2, characterized in that: The conveying pipeline (400) comprises a first elbow pipe (410), an intermediate material conveying pipe (420), a second elbow pipe (430) and a tail material conveying pipe (440) which are connected in sequence, and the first elbow pipe (410), the intermediate material conveying pipe (420), the second elbow pipe (430) and the tail material conveying pipe (440) are all arranged in flange connection; The first curved pipe (410), the middle material conveying pipe (420), the second curved pipe (430) and the tail material conveying pipe (440) are all cut along the axial direction to form a split symmetrical structure.

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