A pneumatic conveying device with internal cleaning function

Abstract

This invention discloses a pneumatic conveying device with internal cleaning function, relating to the field of pneumatic conveying technology. The pneumatic conveying device includes a base frame, a chassis, a conveying mechanism, a pressurizing mechanism, a draining mechanism, a feeding mechanism, and a discharge pipe. The conveying mechanism includes a feeding pipe; the pressurizing mechanism includes an assembly frame and a branching mechanism; the branching mechanism includes a three-way pipe; the draining mechanism includes a side frame and branch pipes; and the feeding mechanism includes a three-way pipe. The chassis, feeding pipe, assembly frame, three-way pipe, side frame, and three-way pipe are all fixedly connected to the base frame. Several groups of feeding pipes and three-way pipes are provided, and these groups are linearly and evenly distributed along the base frame. The three-way pipe is fixedly connected to a group of feeding pipes away from the discharge pipe, and the discharge pipe is fixedly connected to a group of three-way pipes away from the three-way pipe. The three-way pipe is fixedly connected to both the feeding pipe and the branch pipe. The conveying mechanism, pressurizing mechanism, draining mechanism, and feeding mechanism are all electrically connected to the chassis. This invention features long-distance feeding, multi-stage pressurization, and internal pipe self-cleaning.

Description

Technical Field

[0001] This invention relates to the field of pneumatic conveying devices, specifically a pneumatic conveying equipment with an internal cleaning function. Background Technology

[0002] Pneumatic conveying equipment is an automated technology system that uses gas as a carrier to transport powdery, granular, or fragmented materials in closed pipelines. With the advancement of industrial automation and the tightening of environmental standards, this technology has become a core material handling method in fields such as chemical, power, building materials, food, and pharmaceuticals. Traditional pneumatic conveying systems mainly rely on fans or vacuum pumps to create a pressure gradient to drive material movement. Based on the conveying concentration, they can be scientifically divided into two main technical types: dilute phase conveying and dense phase conveying.

[0003] Although the technology system has reached a high level of maturity, its engineering application still faces significant technical challenges. In existing pneumatic conveying equipment, in long-distance conveying scenarios, the fan power consumption is high, and the system efficiency is significantly affected by the pipeline layout. Long-term material transportation and the wear and tear on the inner wall of the pipeline caused by material residue not only shorten the pipeline life but also have a continuous impact on the system's sealing performance. Summary of the Invention

[0004] The purpose of this invention is to provide a pneumatic conveying device with an internal cleaning function to solve the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A pneumatic conveying device with internal cleaning function includes a base frame, a chassis, a conveying mechanism, a pressurizing mechanism, a draining mechanism, a feeding mechanism, and a discharge pipe. The conveying mechanism includes a feeding pipe, the pressurizing mechanism includes an assembly frame and a branching mechanism, the branching mechanism includes a three-way pipe, the draining mechanism includes a side frame and a branch pipe, and the feeding mechanism includes a three-way pipe. The chassis, feeding pipe, assembly frame, three-way pipe, side frame, and three-way pipe are all fixedly connected to the base frame. The feeding pipe and three-way pipe are provided in several groups, and the several groups of feeding pipes and three-way pipes are linearly and evenly distributed along the base frame. The three-way pipe is fixedly connected to a group of feeding pipes away from the discharge pipe, and the discharge pipe is fixedly connected to a group of three-way pipes away from the three-way pipe. The three-way pipe is fixedly connected to the feeding pipe and the branch pipe. The conveying mechanism, pressurizing mechanism, draining mechanism, and feeding mechanism are all connected to the chassis via electrical signals.

[0006] This invention relates to a pneumatic conveying device for transporting dilute phase materials. The dilute phase materials are conveyed to the feeding pipe through a feeding mechanism. By blowing air to pressurize the dilute phase materials at the starting point, the materials are propelled forward over long distances. The multi-stage feeding pipe is connected to a three-way pipe. The pressurization mechanism provides multi-stage auxiliary pressurization to the dilute phase materials in the feeding pipe through the three-way pipe, with staged synchronous pressurization, which significantly reduces the energy consumption of the blowing power in the feeding mechanism. After the pneumatic conveying of the materials is completed, the feeding mechanism injects water into the feeding pipe. The conveying mechanism performs self-cleaning on the inner walls of the feeding pipe and the three-way pipe. The chassis controls the branching mechanism to switch working modes. The branch pipe is connected to the three-way pipe. The drainage mechanism extracts the sewage from the feeding pipe and the three-way pipe.

[0007] Furthermore, the conveying mechanism also includes an internal cleaning mechanism, a reciprocating mechanism, and an internal magnetic block. The internal cleaning mechanism includes a front collar and a rear collar, and the reciprocating mechanism includes a side arc shell, a drive motor, and a strong magnetic block. The front collar and the rear collar are in contact with the inner wall of the feeding pipe. The internal magnetic block is fixedly connected to the front collar and the rear collar. The side arc shell is fixedly connected to the feeding pipe. The internal magnetic block and the strong magnetic block are connected by magnetic force. The drive motor is connected to the chassis by electrical signal.

[0008] After the pneumatic conveying of materials is completed, the feeding mechanism injects water into the feeding pipe. The reciprocating mechanism drives the strong magnetic block to move back and forth along the axis of the feeding pipe. The inner magnetic block and the strong magnetic block are connected by magnetic force. The inner magnetic block drives the front collar and the rear collar to move back and forth along the inner wall of the feeding pipe. The feeding mechanism continuously supplies air to drive the inner cleaning mechanism to clean and scrape off the material adhering to the inner wall of the feeding pipe and the three-way pipe. The drainage mechanism pumps out the sewage through the three-way pipe.

[0009] Furthermore, the internal cleaning mechanism also includes an inner slip ring and a cleaning brush. The inner slip ring is rotatably connected to the front and rear sleeve rings. The inner slip ring is provided with a threaded track and an inner fan blade. The threaded track is located on the outer wall of the inner slip ring. The cleaning brush is fixedly connected to the threaded track. There are several sets of inner fan blades and cleaning brushes. Several sets of inner fan blades are evenly distributed along the circumference of the inner wall of the inner slip ring, and several sets of inner slip rings are arranged along the threaded track.

[0010] The feeding mechanism continuously supplies air, and the high-pressure air conveyed along the axis of the feeding pipe acts on the inner fan blades evenly distributed along the inner circumference of the inner slip ring. The front and rear sleeve rings are fixedly assembled with the inner magnetic block. The front and rear sleeve rings are relatively fixed under the magnetic attraction of the strong magnetic block. The high-pressure air drives the inner slip ring to rotate relative to the front and rear sleeve rings. Several sets of cleaning brushes arranged along the threaded track wash and scrape off the material adhering to the inner wall of the feeding pipe and the three-way pipe. The cleaned impurities are left in the sealed space formed by the front and rear sleeve rings and the inner wall of the feeding pipe. When the strong magnetic block drives the front and rear sleeve rings to move to the fork of the three-way pipe, it stops. The high-pressure air continues to drive the inner slip ring to rotate relative to each other. The branching mechanism switches the working mode, and the branch pipe is connected to the three-way pipe. The drainage mechanism extracts the impurities from the sealed space formed by the front and rear sleeve rings and the inner wall of the feeding pipe.

[0011] Furthermore, the reciprocating mechanism also includes a threaded rod and a pulley seat. The drive motor is fixedly connected to the side arc shell, the output end of the drive motor is fixedly connected to the threaded rod, the pulley seat is provided with a threaded hole, the threaded rod and the threaded hole are connected by threads, the side arc shell is provided with a slide rail, the pulley seat and the slide rail are slidably connected, and the strong magnetic block is fixedly connected to the pulley seat.

[0012] The chassis-controlled drive motor outputs fixed-axis torque to the threaded rod. Through the threaded assembly between the threaded rod and the threaded hole, the torque of the threaded rod is transmitted to the pulley seat. The pulley seat moves back along the slide rail. The strong magnetic block fixedly assembled on the pulley seat drives the front collar and the rear collar to move back along the inner wall of the feeding tube.

[0013] Furthermore, the pressurization mechanism also includes a circulation pump, which has an air inlet and an air outlet. The circulation pump is fixedly connected to the assembly frame. The three-way pipe has an air inlet branch pipe and an air outlet branch pipe. The air inlet is connected to a set of air outlet branch pipes away from the three-way pipe through a pipe. The air outlet is connected to a set of air inlet branch pipes away from the feed pipe through a pipe. The air inlet branch pipe is connected to the adjacent air outlet branch pipe through a pipe.

[0014] The chassis-controlled circulating pump outputs high-pressure airflow through the outlet to a set of inlet branch pipes far from the feed pipe. The high-pressure airflow enters the three-way pipe through the inlet branch pipe and flows into the adjacent inlet branch pipe through the outlet branch pipe. Under the action of the circulating pump, the high-pressure, high-speed airflow circulates at high speed in the linearly distributed multi-stage three-way pipes. Since the branch pipes of the three-way pipe are inclined in the same direction as the gas flow, the high-speed circulating airflow in the branch pipes generates negative pressure, which exerts negative pressure on the main pipe of the three-way pipe. This provides a component force along the direction of the branch pipe to the dilute phase material, and provides a pressurizing boosting effect to the dilute phase material flowing in the three-way pipe.

[0015] Furthermore, the branching mechanism also includes a first electrically controlled valve, a second electrically controlled valve, an electrically controlled iris ring, and a retaining ring. A branch pipe is also provided on the three-way pipe. The electrically controlled iris ring is fixedly connected to the branch pipe, the retaining ring is fixedly connected to the three-way pipe, the first electrically controlled valve is fixedly connected to the intake branch pipe, the second electrically controlled valve is fixedly connected to the exhaust branch pipe, the electrically controlled iris ring is provided with filter screen holes, and there are several groups of filter screen holes. The several groups of filter screen holes are evenly distributed along the circumference of the electrically controlled iris ring. The first electrically controlled valve, the second electrically controlled valve, and the electrically controlled iris ring are all connected to the chassis via electrical signals.

[0016] When the high-speed circulating airflow in the branch pipe generates negative pressure, the chassis sends an electrical signal to close the electronically controlled iris ring. The high-speed circulating airflow in the branch pipe generates negative pressure on the main branch pipe through the evenly distributed filter screen. During self-cleaning, the chassis sends an electrical signal, and the first and second electronically controlled valves isolate the inlet and outlet branch pipes, so that the three-way pipe is only connected to the branch pipe. The electronically controlled iris ring opens, and the drainage mechanism extracts the cleaned impurities from the feed pipe through the branch pipe.

[0017] Furthermore, the drainage mechanism also includes a water pump and a water outlet pipe. The water pump is fixedly connected to the side frame, and the water pump is connected to the branch pipe and the water outlet pipe through pipes. The water pump is connected to the chassis through an electrical signal.

[0018] During the self-cleaning operation, the first and second solenoid valves isolate the air inlet branch pipe and the air outlet branch pipe, so that the three-way pipe is only connected to the branch pipe. The solenoid ring is opened, and the water pump draws the cleaned impurities from the feed pipe through the branch pipe to the outlet pipe for discharge.

[0019] Furthermore, the feeding mechanism also includes a forced draft fan, a feeding machine, and a third electrically controlled valve. The forced draft fan, the feeding machine, and the third electrically controlled valve are all fixedly connected to the three-way pipe, and the forced draft fan, the feeding machine, and the third electrically controlled valve are all connected to the chassis via electrical signals.

[0020] During feeding, the dilute phase material is conveyed to the three-way pipe by the feeding machine. The control box opens the third electric control valve, and the strong blower blows air and pressurizes the dilute phase material at the starting end, propelling the material forward over a long distance. During self-cleaning operation, water is supplied to the three-way pipe through the feeding machine.

[0021] Compared with the prior art, the beneficial effects of this invention are as follows: This invention designs an internal cleaning mechanism. After the pneumatic conveying of materials is completed, the feeder injects water into the feeding pipe. High-pressure air, conveyed along the axis of the feeding pipe, acts on the inner fan blades. The high-pressure air drives the inner slip ring to rotate relative to the front and rear sleeve rings. Several sets of cleaning brushes arranged along the threaded track wash and scrape off the material adhering to the inner wall of the feeding pipe and the three-way pipe. The cleaned impurities are retained in the sealed space formed by the front and rear sleeve rings and the inner wall of the feeding pipe. The strong magnetic block drives the front and rear sleeve rings to move to the fork of the three-way pipe and stops. The high-pressure air continues to drive the inner slip ring to rotate relative to each other. During the self-cleaning operation, the electrically controlled iris ring opens, and the water pump extracts the cleaned impurities from the feeding pipe through the branch pipe. This invention also designs a booster. The high-pressure airflow enters the three-way branch pipe through the inlet branch pipe and flows into the adjacent inlet branch pipe through the outlet branch pipe. Under the action of the circulating pump, the high-pressure, high-speed airflow circulates at high speed in the linearly distributed multi-stage three-way branch pipes. Since the branch pipes of the three-way branch pipes are inclined in the same direction as the gas flow, the high-speed circulating airflow in the branch pipes generates negative pressure, which exerts negative pressure on the main pipe of the three-way branch pipe and provides a force component along the branch pipe direction to the dilute phase material. The multi-stage feeding pipe is connected to the three-way branch pipe, and provides multi-stage auxiliary pressurization to the dilute phase material in the feeding pipe. The staged synchronous pressurization significantly reduces the energy consumption of the blower. This invention enables long-distance positive pressure conveying of dilute phase materials. Through multi-stage synchronous pressurization, the power requirement of the blower is greatly reduced. After the material is conveyed, the pipe is self-cleaned without dead corners. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the conveying mechanism structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal cleaning mechanism of the present invention;

[0025] Figure 4 for Figure 2 A magnified view of part A;

[0026] Figure 5 This is a schematic diagram of the pressurization mechanism of the present invention;

[0027] Figure 6 This is a schematic diagram of the branching mechanism structure of the present invention;

[0028] Figure 7 for Figure 6 A magnified view of part B;

[0029] Figure 8 This is a schematic diagram of the feeding mechanism of the present invention.

[0030] In the diagram: 1. Base frame; 2. Chassis; 3. Conveying mechanism; 31. Feeding pipe; 32. Internal cleaning mechanism; 321. Front collar; 322. Inner slip ring; 3221. Threaded rail; 3222. Inner fan blade; 323. Cleaning brush; 324. Rear collar; 33. Reciprocating mechanism; 331. Side arc shell; 3311. Slide rail; 332. Drive motor; 333. Threaded rod; 334. Pulley seat; 3341. Threaded hole; 335. Strong magnet; 34. Inner magnet; 4. Pressurizing mechanism; 41. Assembly frame; 42. Circulating pump; 4 21. Air inlet; 422. Air outlet; 43. Branching mechanism; 431. Three-way pipe; 4311. Inlet branch pipe; 4312. Outlet branch pipe; 4313. Branch pipe; 432. First solenoid valve; 433. Second solenoid valve; 434. Solenoid iris ring; 4341. Filter screen; 435. Retaining ring; 5. Drainage mechanism; 51. Side frame; 52. Branch pipe; 53. Water pump; 54. Water outlet pipe; 6. Feeding mechanism; 61. Powerful fan; 62. Three-way pipe; 63. Discharge machine; 64. Third solenoid valve; 7. Discharge pipe. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figure 1 , Figure 2 , Figure 5As shown, the present invention provides a technical solution for a pneumatic conveying device with internal cleaning function, comprising a base frame 1, a housing 2, a conveying mechanism 3, a pressurizing mechanism 4, a draining mechanism 5, a feeding mechanism 6, and a discharge pipe 7. The conveying mechanism 3 includes a feeding pipe 31, the pressurizing mechanism 4 includes an assembly frame 41 and a branching mechanism 43, the branching mechanism 43 includes a three-way pipe 431, the draining mechanism 5 includes a side frame 51 and a branch pipe 52, and the feeding mechanism 6 includes a three-way pipe 62. The housing 2, feeding pipe 31, assembly frame 41, three-way pipe 431, side frame 5, and discharge pipe 7 are all included in the technical solution. The frame 51 and the three-way pipe 62 are both fixedly connected to the base frame 1. The feeding pipe 31 and the three-way pipe 431 are provided in several groups. The feeding pipe 31 and the three-way pipe 431 are all linearly and evenly distributed along the base frame 1. The three-way pipe 62 is fixedly connected to a group of feeding pipes 31 that are far away from the discharge pipe 7. The discharge pipe 7 is fixedly connected to a group of three-way pipes 431 that are far away from the three-way pipe 62. The three-way pipe 431 is fixedly connected to the feeding pipe 31 and the branch pipe 52. The conveying mechanism 3, the pressurizing mechanism 4, the draining mechanism 5, and the feeding mechanism 6 are all connected to the machine box 2 by electrical signals.

[0033] This invention is a pneumatic conveying device for transporting dilute phase materials. The dilute phase materials are conveyed to the feeding pipe 31 through the feeding mechanism 6. By blowing air and pressurizing the dilute phase materials at the starting end, the materials are propelled forward over a long distance. The multi-stage feeding pipe 31 is connected to the three-way pipe 431. The pressurizing mechanism 4 provides multi-stage auxiliary pressurization to the dilute phase materials in the feeding pipe 31 through the three-way pipe 431, and the pressurization is carried out in stages and synchronously, which greatly reduces the energy consumption of the blowing power in the feeding mechanism 6. After the pneumatic conveying of materials is completed, the feeding mechanism 6 injects water into the feeding pipe 31. The conveying mechanism 3 performs self-cleaning on the inner walls of the feeding pipe 31 and the three-way pipe 431. The chassis 2 controls the branching mechanism 43 to switch the working mode. The branch pipe 52 is connected to the three-way pipe 431. The draining mechanism 5 extracts the sewage from the feeding pipe 31 and the three-way pipe 431.

[0034] like Figure 2 , Figure 3 , Figure 4 As shown, the conveying mechanism 3 also includes an inner cleaning mechanism 32, a reciprocating mechanism 33, and an inner magnetic block 34. The inner cleaning mechanism 32 includes a front collar 321 and a rear collar 324. The reciprocating mechanism 33 includes a side arc shell 331, a drive motor 332, and a strong magnetic block 335. The front collar 321 and the rear collar 324 are both in contact with the inner wall of the feeding pipe 31. The inner magnetic block 34 is fixedly connected to both the front collar 321 and the rear collar 324. The side arc shell 331 is fixedly connected to the feeding pipe 31. The inner magnetic block 34 and the strong magnetic block 335 are connected by magnetic force. The drive motor 332 is connected to the housing 2 by electrical signal.

[0035] After the pneumatic conveying of materials is completed, the feeding mechanism 6 injects water into the feeding pipe 31. The reciprocating mechanism 33 drives the strong magnetic block 335 to move back and forth along the axis of the feeding pipe 31. The inner magnetic block 34 is connected to the strong magnetic block 335 by magnetic force. The inner magnetic block 34 drives the front collar 321 and the rear collar 324 to move back and forth along the inner wall of the feeding pipe 31. The feeding mechanism 6 continuously supplies air to drive the inner cleaning mechanism 32 to clean and scrape off the materials adhering to the inner wall of the feeding pipe 31 and the three-way pipe 431. The draining mechanism 5 extracts the sewage through the three-way pipe 431.

[0036] like Figure 3 As shown, the internal cleaning mechanism 32 also includes an inner slip ring 322 and a cleaning brush 323. The inner slip ring 322 is rotatably connected to the front collar 321 and the rear collar 324. The inner slip ring 322 is provided with a threaded track 3221 and an inner fan blade 3222. The threaded track 3221 is located on the outer wall of the inner slip ring 322. The cleaning brush 323 is fixedly connected to the threaded track 3221. The inner fan blade 3222 and the cleaning brush 323 are provided with several sets. The several sets of inner fan blades 3222 are evenly distributed along the circumference of the inner wall of the inner slip ring 322, and the several sets of inner slip rings 322 are arranged along the threaded track 3221.

[0037] The feeding mechanism 6 continuously supplies air, and the high-pressure air conveyed along the axis of the feeding pipe 31 acts on the inner fan blades 3222, which are evenly distributed along the inner circumference of the inner slip ring 322. The front sleeve ring 321 and the rear sleeve ring 324 are fixedly assembled with the inner magnetic block 34. The front sleeve ring 321 and the rear sleeve ring 324 are relatively fixed under the magnetic attraction of the strong magnetic block 335. The high-pressure air drives the inner slip ring 322 to rotate relative to the front sleeve ring 321 and the rear sleeve ring 324. Several sets of cleaning brushes 323 arranged along the threaded track 3221 clean the inner wall of the feeding pipe 31 and the three-way pipe 431. The material is thoroughly washed, cleaned, and scraped to remove impurities. The cleaned impurities are retained in the sealed space formed by the front collar 321, the rear collar 324, and the inner wall of the feeding pipe 31. The strong magnetic block 335 drives the front collar 321 and the rear collar 324 to move to the fork of the three-way pipe 431 and stops. The high-pressure strong air continuously drives the inner slip ring 322 to rotate relative to each other. The branching mechanism 43 switches the working mode, and the branch pipe 52 is connected to the three-way pipe 431. The draining mechanism 5 extracts the impurities from the sealed space formed by the front collar 321, the rear collar 324, and the inner wall of the feeding pipe 31.

[0038] like Figure 4 As shown, the reciprocating mechanism 33 also includes a threaded rod 333 and a pulley seat 334. The drive motor 332 is fixedly connected to the side arc shell 331. The output end of the drive motor 332 is fixedly connected to the threaded rod 333. The pulley seat 334 is provided with a threaded hole 3341. The threaded rod 333 and the threaded hole 3341 are connected by threads. The side arc shell 331 is provided with a slide rail 3311. The pulley seat 334 is slidably connected to the slide rail 3311. The strong magnetic block 335 is fixedly connected to the pulley seat 334.

[0039] The motor 332 of the chassis 2 outputs fixed-axis torque to the threaded rod 333. Through the threaded assembly between the threaded rod 333 and the threaded hole 3341, the torque of the threaded rod 333 is transmitted to the pulley seat 334. The pulley seat 334 moves back along the slide rail 3311. The strong magnetic block 335 fixedly assembled on the pulley seat 334 drives the front collar 321 and the rear collar 324 to move back along the inner wall of the feeding pipe 31.

[0040] like Figure 5 As shown, the pressurization mechanism 4 also includes a circulation pump 42, which has an air inlet 421 and an air outlet 422. The circulation pump 42 is fixedly connected to the assembly frame 41. The three-way pipe 431 has an air inlet branch pipe 4311 and an air outlet branch pipe 4312. The air inlet 421 is connected to a set of air outlet branch pipes 4312 away from the three-way pipe 62 through a pipe. The air outlet 422 is connected to a set of air inlet branch pipes 4311 away from the feed pipe 7 through a pipe. The air inlet branch pipe 4311 is connected to the adjacent air outlet branch pipe 4312 through a pipe.

[0041] The electrically controlled circulating pump 42 of the chassis 2 outputs high-pressure airflow through the air outlet 422 to a set of inlet branch pipes 4311 far away from the feed pipe 7. The high-pressure airflow enters the three-way pipe 431 through the inlet branch pipe 4311 and is introduced into the adjacent inlet branch pipe 4311 through the air outlet branch pipe 4312. Under the action of the circulating pump 42, the high-pressure and high-speed airflow circulates at high speed in the linearly evenly distributed multi-stage three-way pipes 431. Since the branch pipes 4313 of the three-way pipe 431 are inclined in the same direction as the gas flow, the high-speed circulating airflow in the branch pipes 4313 generates negative pressure, which generates negative pressure on the main pipe of the three-way pipe 431. This provides a component force along the direction of the branch pipes 4313 to the dilute phase material, and provides a boosting effect to the dilute phase material flowing in the three-way pipe 431.

[0042] like Figure 6 , Figure 7 As shown, the branching mechanism 43 also includes a first electrically controlled valve 432, a second electrically controlled valve 433, an electrically controlled iris ring 434, and a retaining ring 435. A branch pipe 4313 is also provided on the three-way pipe 431. The electrically controlled iris ring 434 is fixedly connected to the branch pipe 4313, and the retaining ring 435 is fixedly connected to the three-way pipe 431. The first electrically controlled valve 432 is fixedly connected to the intake branch pipe 4311, and the second electrically controlled valve 433 is fixedly connected to the exhaust branch pipe 4312. The electrically controlled iris ring 434 is provided with filter screen holes 4341. Several sets of filter screen holes 4341 are provided, and the several sets of filter screen holes 4341 are evenly distributed along the circumference of the electrically controlled iris ring 434. The first electrically controlled valve 432, the second electrically controlled valve 433, and the electrically controlled iris ring 434 are all connected to the chassis 2 via electrical signals.

[0043] When the high-speed circulating airflow in the branch pipe 4313 generates negative pressure, the chassis 2 sends an electrical signal to close the electronically controlled iris ring 434. The high-speed circulating airflow in the branch pipe 4313 generates negative pressure on the main pipe of the three-way pipe 431 through the circumferentially distributed filter screen holes 4341. During the self-cleaning operation, the chassis 2 sends an electrical signal, and the first electronically controlled valve 432 and the second electronically controlled valve 433 isolate the inlet branch pipe 4311 and the outlet branch pipe 4312, so that the three-way pipe 431 is only connected to the branch pipe 52. The electronically controlled iris ring 434 opens, and the drainage mechanism 5 extracts the cleaned impurities from the feed pipe 31 through the branch pipe 4313.

[0044] like Figure 5 As shown, the drainage mechanism 5 also includes a water pump 53 and a water outlet pipe 54. The water pump 53 is fixedly connected to the side frame 51. The water pump 53 is connected to the branch pipe 52 and the water outlet pipe 54 through pipes. The water pump 53 is connected to the chassis 2 through an electrical signal.

[0045] During the self-cleaning operation, the first solenoid valve 432 and the second solenoid valve 433 isolate the air inlet branch pipe 4311 and the air outlet branch pipe 4312, so that the three-way pipe 431 is only connected to the branch pipe 52. The solenoid valve 434 is opened, and the water pump 53 draws the cleaned impurities from the feed pipe 31 through the branch pipe 52 to the water outlet pipe 54 for discharge.

[0046] like Figure 8 As shown, the feeding mechanism 6 also includes a strong blower 61, a feeding machine 63, and a third electric control valve 64. The strong blower 61, the feeding machine 63, and the third electric control valve 64 are all fixedly connected to the three-way pipe 62. The strong blower 61, the feeding machine 63, and the third electric control valve 64 are all connected to the chassis 2 via electrical signals.

[0047] During feeding, the dilute phase material is conveyed to the three-way pipe 62 by the feeder 63. The control box 2 opens the third electric control valve 64, and the strong blower 61 blows air and pressurizes the dilute phase material at the starting end to promote the material to move forward over a long distance. During self-cleaning operation, water is supplied to the three-way pipe 62 by the feeder 63.

[0048] The working principle of this invention: Dilute phase material is conveyed to the three-way pipe 62 via the feeder 63. A strong blower 61 pressurizes the dilute phase material at the starting point, propelling it forward over a long distance. The multi-stage feeding pipe 31 is connected to the three-way pipe 431. The electrically controlled circulating pump 42 of the chassis 2 outputs high-pressure airflow through the outlet 422 to a set of inlet branch pipes 4311 located away from the feeder pipe 7. The high-pressure airflow enters the three-way pipe 431 from the inlet branch pipe 4311 and then flows into the adjacent inlet branch pipe 4311 through the outlet branch pipe 4312. High-pressure, high-speed airflow... Under the action of the circulating pump 42, the gas flows at high speed in the linearly distributed multi-stage three-way pipe 431. Since the branch pipes 4313 of the three-way pipe 431 are inclined in the same direction as the gas flow, the high-speed circulating airflow in the branch pipes 4313 generates negative pressure, providing a force component along the direction of the branch pipes 4313 to the dilute phase material. This provides multi-stage auxiliary pressurization to the dilute phase material in the feeding pipe 31, and the staged synchronous pressurization significantly reduces the energy consumption of the blowing power in the strong blower 61, thus completing the pneumatic conveying. After the material is fed, the feeder 63 injects water into the feeding pipe 31. High-pressure air, conveyed along the axis of the feeding pipe 31, acts on the inner fan blades 3222. The high-pressure air drives the inner slip ring 322 to rotate relative to the front collar 321 and the rear collar 324. Several sets of cleaning brushes 323 arranged along the threaded track 3221 thoroughly clean and scrape away the material adhering to the inner walls of the feeding pipe 31 and the three-way pipe 431. The cleaned impurities are retained in the area formed by the front collar 321, the rear collar 324, and the inner wall of the feeding pipe 31. Within the sealed space, the strong magnetic block 335 drives the front collar 321 and the rear collar 324 to move to the fork of the three-way pipe 431 and stops. The high-pressure strong wind continuously drives the inner slip ring 322 to rotate relative to each other. During the self-cleaning operation, the first electric control valve 432 and the second electric control valve 433 isolate the air inlet branch pipe 4311 and the air outlet branch pipe 4312, so that the three-way pipe 431 is only connected to the branch pipe 52. The electric control iris ring 434 is opened, and the water pump 53 draws the impurities cleaned in the feed pipe 31 through the branch pipe 52 to the water outlet pipe 54 for discharge.

[0049] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pneumatic conveying device with internal cleaning function, characterized in that: The conveying equipment includes a base frame (1), a chassis (2), a conveying mechanism (3), a pressurizing mechanism (4), a draining mechanism (5), a feeding mechanism (6), and a discharge pipe (7). The conveying mechanism (3) includes a feeding pipe (31). The pressurizing mechanism (4) includes an assembly frame (41) and a branching mechanism (43). The branching mechanism (43) includes a three-way pipe (431). The draining mechanism (5) includes a side frame (51) and a branch pipe (52). The feeding mechanism (6) includes a three-way pipe (62). The chassis (2), feeding pipe (31), assembly frame (41), three-way pipe (431), side frame (51), and three-way pipe (62) are all part of the conveying equipment. All are fixedly connected to the base frame (1). The feeding pipe (31) and the three-way pipe (431) are provided in several groups. The feeding pipe (31) and the three-way pipe (431) are all linearly and evenly distributed along the base frame (1). The three-way pipe (62) is fixedly connected to a group of feeding pipes (31) away from the discharge pipe (7). The discharge pipe (7) is fixedly connected to a group of three-way pipes (431) away from the three-way pipe (62). The three-way pipe (431) is fixedly connected to the feeding pipe (31) and the branch pipe (52). The conveying mechanism (3), the pressurizing mechanism (4), the draining mechanism (5), and the feeding mechanism (6) are all connected to the machine box (2) by electrical signal.

2. The pneumatic conveying device with internal cleaning function according to claim 1, characterized in that: The conveying mechanism (3) further includes an inner cleaning mechanism (32), a reciprocating mechanism (33) and an inner magnetic block (34). The inner cleaning mechanism (32) includes a front collar (321) and a rear collar (324). The reciprocating mechanism (33) includes a side arc shell (331), a drive motor (332) and a strong magnetic block (335). The front collar (321) and the rear collar (324) are in contact with the inner wall of the feeding pipe (31). The inner magnetic block (34) is fixedly connected to the front collar (321) and the rear collar (324). The side arc shell (331) is fixedly connected to the feeding pipe (31). The inner magnetic block (34) and the strong magnetic block (335) are connected by magnetic force. The drive motor (332) is connected to the chassis (2) by electrical signal.

3. A pneumatic conveying device with internal cleaning function according to claim 2, characterized in that: The internal cleaning mechanism (32) further includes an inner slip ring (322) and a cleaning brush (323). The inner slip ring (322) is rotatably connected to the front collar (321) and the rear collar (324). The inner slip ring (322) is provided with a threaded track (3221) and an inner fan blade (3222). The threaded track (3221) is located on the outer wall of the inner slip ring (322). The cleaning brush (323) is fixedly connected to the threaded track (3221). The inner fan blade (3222) and the cleaning brush (323) are provided with several sets. Several sets of inner fan blades (3222) are evenly distributed along the circumference of the inner wall of the inner slip ring (322). Several sets of inner slip rings (322) are arranged along the threaded track (3221).

4. A pneumatic conveying device with internal cleaning function according to claim 2, characterized in that: The reciprocating mechanism (33) further includes a threaded rod (333) and a pulley seat (334). The drive motor (332) is fixedly connected to the side arc shell (331). The output end of the drive motor (332) is fixedly connected to the threaded rod (333). The pulley seat (334) is provided with a threaded hole (3341). The threaded rod (333) and the threaded hole (3341) are connected by threads. The side arc shell (331) is provided with a slide rail (3311). The pulley seat (334) is slidably connected to the slide rail (3311). The strong magnetic block (335) is fixedly connected to the pulley seat (334).

5. A pneumatic conveying device with internal cleaning function according to claim 1, characterized in that: The pressurization mechanism (4) also includes a circulation pump (42), which is provided with an air inlet (421) and an air outlet (422). The circulation pump (42) is fixedly connected to the assembly frame (41). The three-way pipe (431) is provided with an air inlet branch pipe (4311) and an air outlet branch pipe (4312). The air inlet (421) is connected to a set of air outlet branch pipes (4312) away from the three-way pipe (62) through a pipe. The air outlet (422) is connected to a set of air inlet branch pipes (4311) away from the feed pipe (7) through a pipe. The air inlet branch pipe (4311) is connected to the adjacent air outlet branch pipe (4312) through a pipe.

6. A pneumatic conveying device with internal cleaning function according to claim 5, characterized in that: The branching mechanism (43) further includes a first electrically controlled valve (432), a second electrically controlled valve (433), an electrically controlled iris ring (434), and a retaining ring (435). A branch pipe (4313) is also provided on the three-way pipe (431). The electrically controlled iris ring (434) is fixedly connected to the branch pipe (4313), and the retaining ring (435) is fixedly connected to the three-way pipe (431). The first electrically controlled valve (432) is fixedly connected to the intake branch pipe (4311). The second electrically controlled valve (433) is fixedly connected to the outlet branch pipe (4312). The electrically controlled iris ring (434) is provided with filter holes (4341). The filter holes (4341) are provided in several groups. The filter holes (4341) are evenly distributed around the circumference of the electrically controlled iris ring (434). The first electrically controlled valve (432), the second electrically controlled valve (433), and the electrically controlled iris ring (434) are all connected to the chassis (2) by electrical signals.

7. A pneumatic conveying device with internal cleaning function according to claim 1, characterized in that: The drainage mechanism (5) also includes a water pump (53) and a water outlet pipe (54). The water pump (53) is fixedly connected to the side frame (51). The water pump (53) is connected to the branch pipe (52) and the water outlet pipe (54) through pipes. The water pump (53) is connected to the chassis (2) through an electrical signal.

8. A pneumatic conveying device with internal cleaning function according to claim 1, characterized in that: The feeding mechanism (6) also includes a strong blower (61), a feeding machine (63) and a third electric control valve (64). The strong blower (61), the feeding machine (63) and the third electric control valve (64) are all fixedly connected to the three-way pipe (62). The strong blower (61), the feeding machine (63) and the third electric control valve (64) are all connected to the chassis (2) by electrical signal.

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