Suction conveying type pneumatic conveying equipment

Abstract

The invention discloses suction type pneumatic conveying equipment, and relates to the technical field of pneumatic conveying equipment.The suction type pneumatic conveying equipment comprises a set of adjustable flow guiding devices installed in a conveying pipeline, and the adjustable flow guiding devices adjust the sectional area of fluid in the conveying pipeline by changing the angles of the adjustable flow guiding devices so as to change the flowing track of gas; the adjustable flow guide devices are mounted at the joints of the modules of the conveying pipeline, so that impact of materials on the inner wall of the pipeline under the action of high-speed airflow is effectively reduced, accumulation of the materials in the pipeline is avoided, and the efficiency and stability of pneumatic conveying equipment are improved; the flow direction and speed of fluid can be dynamically adjusted through dynamic angle adjustment of the adjustable flow guide device, formation of a vortex area is reduced, the fluid is more evenly distributed in a pipeline, and the risks of particulate matter deposition and pipeline erosion are remarkably reduced.

Description

Technical Field

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

[0002] Suction pneumatic conveying is a system that uses the negative pressure generated by air flow in a pipe to move materials. This system is widely used in many industries such as food processing, pharmaceuticals, and chemicals, and is particularly suitable for applications where materials need to be gently handled or materials need to be collected from multiple points. The pneumatic conveying system transports materials from one location to another through a pipe. Its core is to use the kinetic energy of the airflow to propel the material forward. However, traditional pneumatic conveying systems have many problems in practical applications, especially in the process of material transportation, which is prone to material accumulation, pipe wear and difficulty in cleaning.

[0003] The Chinese patent with publication number CN116573421A discloses a pneumatic conveying device, including a discharge barrel, a first conveying pipeline, a drying bin and a second conveying pipeline. The bottom of the discharge barrel is connected with the discharge adjustment bin, and an adjusting roller is arranged in the discharge adjustment bin. The shaft of the adjusting roller is rotatably connected with the inner wall of the discharge adjustment bin. A dividing plate is installed on the adjusting roller, and the dividing plates are arranged in a circular array along the center of the adjusting roller. A cross bar is installed at the end of the dividing plate, and end balls are rollingly connected on the cross bar. The bottom of the discharge adjustment bin is connected with the top of the discharge pipeline, and the bottom end of the discharge pipeline is connected with the first conveying pipeline. The discharge pipeline is perpendicular to the first conveying pipeline. The silicone rubber elastomer inside the curved pipe section, after colliding with the material, uses its own elasticity to eject the material to reduce the kinetic energy loss of the material. At the same time, when the curved pipe section is blocked, the inner diameter of the pipeline is expanded after the pipeline is heated to increase the flow space of the material, and the silicone rubber elastomer expands due to heat, squeezes the material, destroys the stable structure of the accumulated material, and is conducive to pipeline dredging.

[0004] Traditional pneumatic conveying equipment has the following problems: First, in the curved parts of the conveying pipeline, due to the inertia of the material, it is easy to accumulate at the bend, causing pipeline blockage and affecting the conveying efficiency. Secondly, when the high-speed airflow carries the material through the pipeline, it will cause erosion to the inner wall of the pipeline, especially the bend, where the wear is particularly severe, shortening the service life of the pipeline. In the above patent, the problem of pipeline blockage is solved by using silicone rubber elastomers to extrude the material and destroy the stable structure of the accumulated material. However, when the pneumatic conveying equipment itself is under high or low pressure, the silicone rubber elastomer is deformed by the pressure difference, which may lead to problems such as reduced sealing of the connection, increased wear and increased risk of blockage.

[0005] Therefore, the present invention proposes a suction-type pneumatic conveying device to solve the above-mentioned problems. Summary of the invention

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

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: suction-type pneumatic conveying equipment, comprising: a pneumatic conveying equipment body, which comprises a feed hopper, a cyclone separator and a conveying pipeline, wherein the material in the feed hopper flows into the cyclone separator via the conveying pipeline;

[0008] An adjustable flow guide device is installed in the delivery pipeline, and the adjustable flow guide device adjusts the cross-sectional area of ​​the fluid in the delivery pipeline by changing its own angle to change the flow trajectory of the gas.

[0009] As a preferred solution of the suction-type pneumatic conveying equipment described in the present invention, the adjustable flow guide 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 fluid flow cross-sectional area in the conveying pipeline.

[0010] As a preferred solution of the suction-type pneumatic conveying equipment of the present invention, the angle adjustment module includes a flange plate, a plurality of rectangular strips protrude inward from the flange plate, a set of rotating rods are inserted horizontally between each two adjacent rectangular strips, and a guide vane that rotates synchronously with the rotating rod is arranged on the surface of the rotating rod, and an annular gear is fixed at both ends of the rotating rod;

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

[0012] As a preferred solution of the suction-type pneumatic conveying equipment described in the present invention, the linkage module includes an internal threaded ring, and multiple traction columns extend from the end of the internal threaded ring. The internal threaded ring is fixedly connected to multiple arc-shaped guide plates through multiple traction columns. The inner walls of the arc-shaped guide plates protrude outward to form two rows of serrations, and the serrations are meshed with the ring gear for transmission.

[0013] As a preferred solution of the suction-type pneumatic conveying equipment described in the present invention, the arc-shaped guide piece includes an arc-shaped piece and a guide column connected in one piece, and the guide column is engaged in the inside of the rectangular groove so that the arc-shaped guide piece can be linearly displaced along the axial direction of the rectangular groove.

[0014] As a preferred solution of the suction-type pneumatic conveying equipment described in the present invention, the cleaning module includes an external threaded ring, an annular groove is provided at the tail end of the external threaded ring, and an annular cartridge is engaged in the annular groove, and the external threaded ring is fixed to the inner wall of the conveying pipe through the annular cartridge.

[0015] As a preferred solution of the suction-type pneumatic conveying equipment described in the present invention, a plurality of triangular teeth are fixed on the inner wall of the external threaded ring, the plurality of triangular teeth pass through the annular cartridge and extend outward, and a plurality of evenly distributed bristles are fixedly inserted at the end of the external threaded ring away from the triangular teeth, and the plurality of bristles extend to the surface of the arc-shaped guide plate.

[0016] As a preferred solution of the suction-type pneumatic conveying equipment described in the present invention, the driving module includes a circular clamping roller that penetrates and engages with the side wall of the conveying pipe, a group of driven gears are fixedly connected at both ends of the circular clamping roller, and a group of driving motors are installed on the outer wall of the conveying pipe, and a driving gear for driving the driven gear to rotate is fixedly connected to the top of the driving motor, and the driving gear drives the external threaded ring to rotate through the driven gear and the circular clamping roller.

[0017] As a preferred solution of the suction-type pneumatic conveying equipment described in the present invention, wherein: the angle adjustment module, the linkage module and the cleaning module form a driven module, the number of the driven modules is multiple groups, a plurality of lead balls are installed inside the conveying pipeline, a traction line is passed through the inside of the lead ball, the traction line is wound around a plurality of driven modules and makes the plurality of driven modules displace together, and a reset module is installed between the plurality of driven modules, and the driven module is reset by the elastic force of the reset module.

[0018] As a preferred solution of the suction-type pneumatic conveying equipment described in the present invention, the conveying pipeline includes a bend pipe 1, an intermediate material conveying pipe, a bend pipe 2 and a tail material conveying pipe which are connected in sequence, and the bend pipe 1, the intermediate material conveying pipe, the bend pipe 2 and the tail material conveying pipe are all flange-connected.

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

[0020] Beneficial effects of the present invention: The present invention effectively reduces the impact of materials on the inner wall of the pipeline under the action of high-speed airflow by installing an adjustable flow guide device at the connection of each module of the modularly designed conveying pipeline, avoids the accumulation of materials in the pipeline, and thus improves the efficiency and stability of the pneumatic conveying equipment; the dynamic angle adjustment of the adjustable flow guide device can dynamically adjust the flow direction and speed of the fluid, reduce the formation of eddy current areas, make the distribution of the fluid in the pipeline more uniform, and significantly reduce the risk of particle deposition and pipeline erosion. Among them, the adjustable flow guide 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 sediment 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 maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the suction-type 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 structural detail diagram of the driving module in the present invention;

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

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

[0027] Figure 6 It is a partial structural axonometric diagram of the adjustable flow guide device of the present invention;

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

[0029] Figure 8 This is a structural detail diagram of the linkage module of the present invention.

[0030] Figure numerals: 100, suction nozzle; 200, suction section pipeline; 300, feed hopper; 400, conveying pipeline; 410, elbow one; 420, intermediate material conveying pipe; 430, elbow two; 431, lead ball; 432, arc-shaped semi-pipe; 440, tail material conveying pipe; 441, semicircular pipeline; 500, cyclone separator; 600, discharger; 700, adjustable guide device; 710, angle adjustment module; 711, flange; 712, rectangular bar; 713, rotating rod; 714, guide plate; 715, ring gear; 716, rectangular groove; 720, linkage module ;721, internal thread ring;722, traction column;723, arc-shaped guide piece;7231, arc-shaped piece;7232, guide column;724, sawtooth;730, brush module;731, external thread ring;732, triangular teeth;733, bristles;734, annular groove;740, drive module;741, circular roller;742, driven gear;743, driving gear;744, drive motor;750, traction line;760, reset module;761, positioning ring;762, elastic telescopic ball rod;770, annular cartridge;800, exhaust section pipe;900, Roots vacuum pump. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0034] Example 1

[0035] Reference Figure 1 , Figure 2, which is the first embodiment of the present invention, and provides a suction-type pneumatic conveying device, including a suction nozzle 100, an air 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, wherein the suction nozzle 100 is connected to the air inlet end of the feed hopper 300 through the air suction section pipeline 200, the air 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 end 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, and 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 is established in the entire suction-type pneumatic conveying equipment, and this negative pressure is guided to the outside of the pneumatic conveying equipment through the Roots vacuum pump 900. Subsequently, the air enters the suction section pipe 200 through the suction nozzle 100 and enters the pneumatic conveying equipment, while the material is sucked into the pneumatic conveying equipment through the feed hopper 300. After the material enters the pneumatic conveying equipment, it enters the cyclone separator 500 through the conveying pipe 400. Under the action of negative pressure, the material enters the cyclone separator 500 to generate a vortex motion, and the material and air are separated.

[0037] The cyclone separator 500 uses centrifugal force to separate the material from the airflow, and the material falls into the discharger 600 below 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 storage and discharge to complete the entire conveying process.

[0038] An adjustable flow guide device 700 is installed in the conveying pipeline 400. The adjustable flow guide device 700 adjusts the cross-sectional area of ​​the fluid in the conveying pipeline 400 by changing its own angle to change the flow trajectory of the gas. Its main function is to reduce the impact of the high-speed airflow on the inner wall of the pipeline during the conveying process of the material, and can also effectively prevent the accumulation of materials in the pipeline, thereby improving the conveying efficiency and stability of the pneumatic conveying equipment.

[0039] The delivery pipeline 400 adopts a "half-pipe docking" design.

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

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

[0042] Specifically, refer to Figure 1 and Figure 2 As shown, the tail material conveying pipe 440 includes two semicircular pipes 441 of symmetrical design, and the second bend 430 includes two arc-shaped semi-pipes 432 of symmetrical design. One semicircular pipe 441 is connected to the two arc-shaped semi-pipes 432 through a flange, and then another semicircular pipe 441 is connected according to the surface of the semicircular pipe 441. Such an installation and connection method can ensure the tightness, sealing and self-locking properties of the split pipes during connection. There is no need to install fasteners on the outer surfaces of the bend 1 410, the middle material conveying pipe 420, the bend 2 430 and the tail material conveying pipe 440 to ensure the tightness of the connection of the symmetrically designed conveying pipe 400.

[0043] In order to ensure the tightness of the connection between the symmetrically designed split elbow pipe 410, the middle material conveying pipe 420, the elbow pipe 430 and the tail material conveying pipe 440, the connection between the elbow pipe 1 410, the connection between the middle material conveying pipes 420, the connection between the elbow pipe 2 430 and the connection between the tail material conveying pipe 440 can be modified to a plug-in connection, or a sealing strip can be installed on the connection surface to ensure the tightness of the connection.

[0044] The conveying pipeline 400 adopts a "half-pipe docking" design. The half-pipe docking method facilitates rapid assembly, modular disassembly and assembly, and overall disassembly and assembly on site. Especially when the inside of the pipeline needs to be cleaned or repaired, the damaged pipeline can be opened more conveniently and directly. On the other hand, the flange connection not only ensures the tight connection between the various sections of the pipeline, but also allows for quick replacement when the pipeline is damaged or worn, reducing downtime and maintenance costs.

[0045] In addition, by designing the conveying pipeline 400 in a modular manner, the configuration and length of the pipeline can be flexibly adjusted to meet the conveying needs under different working conditions; the "half-pipe docking" design not only improves the maintainability of the pneumatic conveying equipment, but also enhances its adaptability in complex application environments.

[0046] Example 2

[0047] Reference Figure 2 to Figure 8As shown, it is a second embodiment of the present invention, which is based on the previous embodiment, and the difference is that the adjustable guide 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, drives the linkage module 720 to engage with the angle adjustment module 710, and then adjusts 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 bend pipe 430 and the tail material conveying pipe 440, and a plurality of rectangular strips 712 protrude inward from the flange 711. A set of rotating rods 713 is inserted horizontally between each two adjacent rectangular strips 712, and a guide plate 714 that rotates synchronously with the rotating rod 713 is arranged on the surface of the rotating rod 713, and a ring gear 715 is also fixed at both ends of the rotating rod 713.

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

[0050] The guide vane 714 is designed to change the direction of the airflow, thereby achieving the purpose of adjusting the inner diameter of the pipeline.

[0051] Ring gears 715 are fixed at both ends of the rotating rod 713, so that the rotating rod 713 can adjust the angle of the guide vane 714 by rotating. The rotating ring gear 715 is driven by external force to rotate so that the rotating rod 713 rotates synchronously, changing the angle of the guide vane 714 relative to the center line of the pipeline, thereby changing the flow direction and speed of the airflow.

[0052] Specifically, angle adjustment modules 710 are installed between the bend 1 410 and the intermediate material conveying pipe 420, between the intermediate material conveying pipe 420 and the bend 2 430, and between the bend 2 430 and the tail material conveying pipe 440. When the fluid enters the bend 2 430 from the intermediate material conveying pipe 420 or the suction section pipe 200 enters the inside of the bend 1 410, it tends to flow along the original straight line due to inertia, resulting in a higher speed on the outside of the bend and a lower speed on the inside of the bend, thereby generating a vortex zone inside the bend 1 410 and the bend 2 430, increasing the risk of solid particles in the fluid being deposited. At the same time, the material will impact the bend 1 410 and the bend 2 430, causing erosion of the inner wall of the bend. The guide vane 714 guides the fluid to enter the bend 1 410 and the bend 2 430 in a smoother manner, reducing the lateral velocity component of the fluid when entering the bend, 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 threaded ring 731 and the internal threaded ring 721 are spirally connected, and the external threaded ring 731 and the internal threaded ring 721 rotate and displace relative to each other. Among them, since the internal threaded ring 721 is restricted by the traction column 722 and the arc-shaped guide plate 723, the internal threaded ring 721 only undergoes linear displacement, that is, the external threaded ring 731 rotates under the external force, and at the same time rotates under the restriction of the annular cartridge 770 but cannot produce displacement.

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

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

[0064] The external thread ring 731 is fixed to the inner wall of the tail material conveying pipe 440 through the annular groove 734 and the annular cartridge 770. The rotation of the external thread ring 731 is constrained by the annular cartridge 770 and will not move along the axial direction of the tail material conveying pipe 440. The external thread ring 731 drives the bristles 733 to rotate during the rotation process, so that the rotating bristles 733 clean the inner wall of the tail material conveying pipe 440, the linkage module 720 and the gap of the angle adjustment module 710.

[0065] The outer thread ring 731 is connected to the inner thread ring 721 in a spiral connection. When the outer thread ring 731 rotates, due to the interaction between the inner and outer threads, the inner thread ring 721 will move along the axial direction of the tail material conveying pipe 440. The axial movement of the inner thread ring 721 is transmitted to the arc guide piece 723 through the plurality of traction columns 722. The arc guide piece 723 is provided with two rows of saw teeth 724, which mesh with the ring gear 715 in the angle adjustment module 710. When the arc guide piece 723 moves axially, the saw teeth 724 will also move, and then mesh with the ring gear 715, causing the ring gear 715 to rotate.

[0066] The ring gear 715 is fixed at both ends of the rotating rod 713, so when the ring gear 715 rotates, the rotating rod 713 also rotates. The rotation of the rotating rod 713 drives the guide vane 714 fixed thereon to rotate, thereby changing the angle of the guide vane 714 relative to the center line of the pipeline. The rotation angle of the guide vane 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, and makes the fluid more evenly distributed in the pipe cross section, reducing the risk of deposition of particulate matter in the fluid. In addition, the angle adjustment of the guide vane 714 also changes the velocity distribution of the fluid entering the elbow, reduces the formation of local high-pressure areas, and reduces the erosion caused by uneven flow velocity.

[0067] Example 3

[0068] Reference Figure 2 to Figure 8 As shown, it is the third embodiment of the present invention, which is based on the previous embodiment, except that the angle adjustment module 710, the linkage module 720, and the cleaning module 730 form a driven module, and the driven module is located at the connection between the bend pipe 410 and the feed hopper 300, the connection between the bend pipe 410 and the intermediate material conveying pipe 420, the connection between the intermediate material conveying pipe 420 and the bend pipe 430, and the connection between the bend pipe 430 and the tail material conveying pipe 440, and a plurality of lead balls 431 are installed inside the bend pipe 410, the intermediate material conveying pipe 420 and the bend pipe 430, and a traction line 750 is passed through the inside of the lead ball 431, and the traction line 750 is wound around a plurality of driven modules to enable the plurality of driven modules to displace together.

[0069] A reset module 760 is installed inside the bend pipe 1 410, the intermediate material conveying pipe 420 and the bend pipe 2 430. 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 the annular groove 734 at the tail end of the external threaded ring 731 through the elastic telescopic ball rod 762. The elastic telescopic ball rod 762 includes an elastic telescopic rod connected in an integral manner and a ball head located at the end of the elastic telescopic rod, and the ball head is engaged in the annular groove 734.

[0070] Specifically, a plurality of lead balls 431 are installed inside the first bend pipe 410, the middle material conveying pipe 420 and the second bend pipe 430, and traction wires 750 are passed through the inside of these lead balls 431. The traction wires 750 are wound around a plurality of driven modules, so that when the driven module at the connection between the second bend pipe 430 and the tail material conveying pipe 440 is actuated, the other driven modules are displaced together through the traction wires 750, and then the angles of the guide plates 714 at a plurality of positions are synchronously adjusted, thereby ensuring the balanced adjustment of the fluid flow characteristics in the entire pneumatic conveying equipment.

[0071] In addition, a reset module 760 is also installed inside the first bend 410, the intermediate material conveying pipe 420 and the second bend 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 the annular groove 734 at the tail end of the external thread ring 731 through the elastic telescopic ball rod 762. The elastic telescopic ball rod 762 ensures that the traction line 750 is always in a taut state. When the driving module 740 is not required to drive, the elastic force of the elastic telescopic ball rod 762 causes the driven module to return to the rotation or the initial setting angle, thereby realizing the automatic reset function.

[0072] By introducing the lead ball 431 and the traction line 750, the coordinated action of multiple slave modules is achieved, ensuring that the fluid can obtain a consistent flow diversion effect at each bend. In addition, the design of the reset module 760 ensures that the slave module can automatically return to the preset position in the absence of an external driving force, reducing the need for human intervention and improving the automation level of the pneumatic conveying equipment. This design not only improves the efficiency of the fluid transmission process, but also enhances the reliability and stability of the pneumatic conveying equipment and reduces maintenance costs.

[0073] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in 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 guide device (700) is installed in the delivery pipeline (400), and the adjustable flow guide 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.

2. The suction-type pneumatic conveying equipment according to claim 1, characterized in that: 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 conveying pipeline (400).

3. The suction-type pneumatic conveying device according to claim 2, characterized in that: The angle adjustment module (710) comprises a flange (711), a plurality of rectangular strips (712) protrude inwardly from the flange (711), a group of rotating rods (713) are inserted horizontally between each two adjacent rectangular strips (712), and a guide plate (714) is arranged on the surface of the rotating rod (713) to rotate synchronously with the rotating rod (713), and ring gears (715) are also fixed at both ends of the rotating rod (713); A plurality of rectangular grooves (716) are recessed outwardly from 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).

4. The suction-type pneumatic conveying device according to claim 3, characterized in that: The linkage module (720) comprises 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 pieces (723) through the plurality of traction columns (722). The inner wall of the arc-shaped guide piece (723) protrudes outward to form two rows of saw teeth (724), and the saw teeth (724) are meshed with the ring gear (715) for transmission.

5. The suction-type pneumatic conveying device according to claim 4, characterized in that: 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 in the interior of the rectangular groove (716) so that the arc-shaped guide piece (723) is linearly displaced along the axial direction of the rectangular groove (716).

6. The suction-type pneumatic conveying device according to claim 5, characterized in that: The cleaning module (730) comprises an external threaded ring (731), an annular groove (734) is provided at the rear end of the external threaded ring (731), and an annular cartridge (770) is engaged in the annular groove (734), and the external threaded ring (731) is fixed to the inner wall of the conveying pipe (400) through the annular cartridge (770).

7. The suction-type pneumatic conveying device according to claim 6, characterized in that: 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 outwardly. 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 to the surface of the arc-shaped guide piece (723).

8. The suction-type pneumatic conveying device according to claim 7, characterized in that: 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).

9. The suction-type pneumatic conveying device according to claim 8, 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 elastic force of the reset module (760) drives the driven module to reset.

10. The suction-type pneumatic conveying device according to claim 9, 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 flange-connected. 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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