Pneumatic conveying equipment with internal cleaning function

Abstract

The invention discloses pneumatic conveying equipment with an internal cleaning function, and relates to the technical field of pneumatic conveying, the pneumatic conveying equipment comprises a bottom frame, a case, a conveying mechanism, a pressurizing mechanism, a liquid discharging mechanism, a feeding mechanism and a discharging pipe, the conveying mechanism comprises a feeding pipe, the pressurizing mechanism comprises an assembling frame and a branch flow mechanism, and the branch flow mechanism comprises a three-branch pipe; the liquid discharging mechanism comprises a side frame and branch pipes, the feeding mechanism comprises a three-way pipe, a machine box, a plurality of sets of feeding pipes, an assembling frame and three-branch pipes, the side frame and the three-way pipe are fixedly connected with the bottom frame, the multiple sets of feeding pipes and the multiple sets of three-branch pipes are linearly and evenly distributed along the bottom frame, the three-way pipe is fixedly connected with the set of feeding pipes away from the discharging pipe, and the assembling frame is fixedly connected with the assembling frame. The discharging pipe is fixedly connected with a set of three-branch pipes away from the three-way pipe, the three-branch pipes are fixedly connected with the feeding pipe and the branch pipes, and the conveying mechanism, the pressurizing mechanism, the liquid discharging mechanism and the feeding mechanism are all connected with the machine box through electric signals. Long-distance feeding and multi-stage pressurization are achieved, and self-cleaning in the pipe is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of pneumatic conveying devices, in particular to pneumatic conveying equipment with an internal cleaning function. Background Art

[0002] Pneumatic conveying equipment is an automated technology system that uses a gas carrier to transport powdered, granular, or fragmented materials within a closed pipeline. With the advancement of industrial automation and rising environmental standards, this technology has become a core material transport method in the chemical, power, building materials, food, and pharmaceutical industries. Traditional pneumatic conveying systems primarily rely on fans or vacuum pumps to create a pressure gradient to drive material movement. These systems can be scientifically categorized into dilute phase conveying and dense phase conveying, depending on the conveying concentration.

[0003] Although this technology system has reached a high level of maturity, its engineering application still faces significant technical challenges. Existing pneumatic conveying equipment consumes high fan power in long-distance transport scenarios, and system efficiency is significantly affected by pipeline layout. Long-term material transportation and residual material can cause wear on the pipeline inner wall, shortening the pipeline lifespan and significantly impacting the system's sealing performance. Summary of the Invention

[0004] The object of the present 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-mentioned purpose, the present invention provides the following technical solutions: a pneumatic conveying equipment with internal cleaning function includes a chassis, a conveying mechanism, a pressurizing mechanism, a drainage mechanism, a loading mechanism and a discharge pipe, the conveying mechanism includes a feed pipe, the pressurizing mechanism includes an assembly frame and a branch flow mechanism, the branch flow mechanism includes a three-way pipe, the drainage mechanism includes a side frame and a branch pipe, the loading mechanism includes a tee, the chassis, the feed pipe, the assembly frame, the three-way pipe, the side frame and the three-way pipe are all fixedly connected to the chassis, the feed pipe and the three-way pipe are each provided with several groups, and the several groups of feed pipes and three-way pipes are all linearly evenly distributed along the chassis, the three-way pipe is fixedly connected to a group of feed pipes away from the discharge pipe, 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 feed pipe and the branch pipe, and the conveying mechanism, the pressurizing mechanism, the drainage mechanism and the feeding mechanism are all connected to the chassis through electrical signals.

[0006] The present invention is a pneumatic conveying device for transporting dilute phase materials. The dilute phase materials are transported to the feed pipe through a feeding mechanism. The dilute phase materials are blown and pressurized at the starting end to promote the long-distance transportation of the materials. The multi-stage feed pipe is connected with the three-way pipe. The boosting mechanism performs multi-stage auxiliary boosting and assistance on the dilute phase materials in the feed pipe through the three-way pipe, and boosts the pressure synchronously in stages, which greatly reduces the energy consumption of the blowing power in the feeding mechanism. After completing the pneumatic conveying of the materials, the feeding mechanism injects water into the feed pipe, and the conveying mechanism self-cleans the inner walls of the feed pipe and the three-way pipe. The chassis controls the branch flow mechanism to switch the working mode, the branch pipe is connected with the three-way pipe, and the drainage mechanism extracts the sewage in the feed 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 ring and a rear ring. The reciprocating mechanism includes a side arc shell, a drive motor and a strong magnetic block. The front ring and the rear ring are in contact with the inner wall of the feed tube. The internal magnetic block is fixedly connected to the front ring and the rear ring. The side arc shell is fixedly connected to the feed tube. The internal magnetic block is connected to the strong magnetic block through magnetic force. The drive motor is connected to the chassis through electrical signals.

[0008] After completing the pneumatic conveying of materials, the feeding mechanism injects water into the feeding pipe, and the reciprocating mechanism drives the strong magnetic block to move back and forth along the axis of the feeding pipe. The inner magnetic block is connected to the strong magnetic block by magnetic force, and the inner magnetic block drives the front ring and the rear ring to move back and forth along the inner wall of the feeding pipe. The feeding mechanism continuously supplies air to drive the internal cleaning mechanism to clean and scrape the materials adhered to the inner walls of the feeding pipe and the three-way pipe, and the drainage mechanism extracts the sewage through the three-way pipe.

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

[0010] The feeding mechanism continuously supplies air, and the high-pressure strong wind transported along the axis of the feed pipe acts on the inner fan blades evenly distributed along the circumference of the inner wall of the inner slip ring. The front ring and the rear ring are fixedly assembled with the inner magnetic block, and the front ring and the rear ring are relatively fixed under the magnetic adsorption of the strong magnetic block. The high-pressure strong wind drives the inner slip ring to rotate relative to the front ring and the rear ring. The materials adhered to the inner walls of the feed pipe and the three-way pipe are washed, cleaned and scraped away by several groups of cleaning brushes arranged along the threaded track. The cleaned impurities are retained in the sealed space formed by the front ring, the rear ring and the inner wall of the feed pipe. The strong magnetic block drives the front ring and the rear ring to move to the fork of the three-way pipe and stops. The high-pressure strong wind continues to drive the inner slip ring to rotate relative to each other, the bifurcation mechanism switches the working mode, the branch pipe is connected to the three-way pipe, and the drainage mechanism extracts impurities in the sealed space formed by the front ring, the rear ring and the inner wall of the feed pipe.

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

[0012] The electronically controlled drive motor of the chassis outputs fixed-axis torque to the threaded rod, and the threaded rod torque is transmitted to the pulley seat through the threaded assembly between the threaded rod and the threaded hole. The pulley seat moves back and forth along the slide rail, and the strong magnetic block fixed to the pulley seat drives the front ring and the rear ring to move back and forth along the inner wall of the feed pipe.

[0013] Furthermore, the boosting mechanism also includes a circulation pump, which is provided with an air inlet and an air outlet. The circulation pump is fixedly connected to the assembly frame, and an air inlet branch and an air outlet branch are provided on the three-way pipe. The air inlet is connected to a group of air outlet branches away from the three-way pipe through a pipe, the air outlet is connected to a group of air inlet branches away from the discharge pipe through a pipe, and the air inlet branch is connected to the adjacent air outlet branch through a pipe.

[0014] The electronically controlled circulation pump of the chassis outputs high-pressure airflow through the air outlet to a group of air intake branches away from the discharge pipe. The high-pressure airflow enters the three-way pipe from the air intake branch and enters the adjacent air intake branch from the air outlet branch. Under the action of the circulation pump, the high-pressure and high-speed airflow circulates at high speed in the linearly evenly distributed multi-stage three-way pipe. 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 pipe generates negative pressure, which exerts a negative pressure effect on the main pipe of the three-way pipe, provides a component of force along the direction of the branch pipe to the dilute phase material, and provides a pressurization assist effect on the dilute phase material flowing in the three-way pipe.

[0015] Furthermore, the flow branch 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 air inlet branch pipe, the second electrically controlled valve is fixedly connected to the air outlet branch pipe, the electrically controlled iris ring is provided with filter holes, and the filter holes are provided in several groups. The several groups of filter 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 through electrical signals.

[0016] When the high-speed circulating airflow in the branch pipe of the circulation pump 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 pipe of the three-way pipe through the filter holes evenly distributed around the circumference. During the self-cleaning operation, the chassis sends an electrical signal, and the first and second electronically controlled valves cut off 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 electronically controlled iris ring opens, and the drainage mechanism extracts the impurities cleaned in 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, the water pump is connected to the branch pipe and the water outlet pipe through pipes, and the water pump is connected to the chassis through electrical signals.

[0018] During the self-cleaning operation, the first and second electrically controlled valves cut off the air inlet and outlet branches, so that the three-way pipe is only connected to the branch pipe. The electrically controlled iris ring opens, and the water pump extracts the impurities cleaned in the feed pipe through the branch pipe and discharges them into the water outlet pipe.

[0019] Furthermore, the feeding mechanism also includes a strong blower, a blanking machine and a third electrically controlled valve. The strong blower, the blanking machine and the third electrically controlled valve are all fixedly connected to the three-way pipe, and the strong blower, the blanking machine and the third electrically controlled valve are all connected to the chassis through electrical signals.

[0020] During loading, the dilute phase material is transported to the three-way pipe through the feeder, the chassis controls the third electric control valve to open, and the strong fan blows and pressurizes the dilute phase material at the starting end to push the material forward for long-distance transportation. During self-cleaning operation, water is supplied to the three-way pipe through the feeder.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention designs an internal cleaning mechanism, after completing the pneumatic conveying of materials, the feeder injects water into the feed pipe, and the high-pressure strong wind conveyed along the axis of the feed pipe acts on the inner fan blade, and the high-pressure strong wind drives the inner slip ring to rotate relative to the front ring and the rear ring, and a plurality of cleaning brushes arranged along the threaded track are used to wash, clean and scrape the materials adhered to the inner walls of the feed pipe and the three-way pipe, and the cleaned impurities are retained in the sealed space formed by the front ring, the rear ring and the inner wall of the feed pipe, and the strong magnetic block drives the front ring and the rear ring to move to the fork of the three-way pipe and stops, and the high-pressure strong wind continues to drive the inner slip ring to rotate relative to each other. During the self-cleaning operation, the electric-controlled iris ring opens, and the water pump extracts the cleaned impurities in the feed pipe through the branch pipe; the present invention designs a supercharger The structure is as follows: the high-pressure airflow enters the three-way pipe from the air inlet branch pipe, and enters the adjacent air inlet branch pipe from the air outlet branch pipe. Under the action of the circulation pump, the high-pressure and high-speed airflow circulates at high speed in the linearly evenly distributed multi-stage three-way pipe. Since the branch pipes of the three-way pipe are inclined in the same direction as the direction of 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, and provides a component of force along the direction of the branch pipe for the dilute phase material. The multi-stage feeding pipe is connected to the three-way pipe, and the dilute phase material in the feeding pipe is subjected to multi-stage auxiliary pressurization and synchronous pressurization in stages, which greatly reduces the energy consumption of the fan power. The present invention performs long-distance positive pressure transportation on the dilute phase material, and greatly reduces the fan power demand through multi-stage synchronous pressurization. After the material is completed, the inside of the pipe is self-cleaned without dead angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2It is a schematic structural diagram of the conveying mechanism of the present invention; Figure 3 This is a schematic structural diagram of the internal cleaning mechanism of the present invention; Figure 4 for Figure 2 A magnified schematic diagram of a local area A; Figure 5 It is a structural schematic diagram of the boosting mechanism of the present invention; Figure 6 Schematic diagram of the bifurcated flow mechanism structure of the present invention; Figure 7 for Figure 6 A schematic diagram of a partial B enlargement; Figure 8 It is a schematic structural diagram of the feeding mechanism of the present invention.

[0023] In the figure: 1, chassis; 2, chassis; 3, conveying mechanism; 31, feeding pipe; 32, internal cleaning mechanism; 321, front ring; 322, internal sliding ring; 3221, threaded track; 3222, internal fan blade; 323, cleaning brush; 324, rear ring; 33, reciprocating mechanism; 331, side arc shell; 3311, slide rail; 332, driving motor; 333, threaded rod; 334, pulley seat; 3341, threaded hole; 335, strong magnetic block; 34, internal magnetic block; 4, boosting mechanism; 41, assembly frame; 42, circulation pump; 4 21. Air inlet; 422. Air outlet; 43. Branch flow mechanism; 431. Three-way pipe; 4311. Air inlet branch pipe; 4312. Air outlet branch pipe; 4313. Branch pipe; 432. First electrically controlled valve; 433. Second electrically controlled valve; 434. Electrically controlled iris ring; 4341. Filter mesh hole; 435. Retaining ring; 5. Drain mechanism; 51. Side frame; 52. Branch pipe; 53. Water pump; 54. Water outlet pipe; 6. Feeding mechanism; 61. Strong fan; 62. Tee pipe; 63. Discharge machine; 64. Third electrically controlled valve; 7. Discharge pipe. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1 、 Figure 2 、 Figure 5As shown, the present invention provides a technical solution of a pneumatic conveying device with an internal cleaning function, comprising a chassis 1, a chassis 2, a conveying mechanism 3, a pressurizing mechanism 4, a drainage mechanism 5, a feeding mechanism 6 and a discharge pipe 7, wherein the conveying mechanism 3 includes a feeding pipe 31, the pressurizing mechanism 4 includes an assembly frame 41 and a bifurcated flow mechanism 43, the bifurcated flow mechanism 43 includes a three-way pipe 431, the drainage 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, the feeding pipe 31, the assembly frame 41, the three-way pipe 431, the side The frame 51 and the tee pipe 62 are fixedly connected to the base frame 1. The feed pipe 31 and the three-way pipe 431 are provided in several groups. The several groups of feed pipes 31 and the three-way pipe 431 are linearly evenly distributed along the base frame 1. The three-way pipe 62 is fixedly connected to a group of feed 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 feed pipe 31 and the branch pipe 52. The conveying mechanism 3, the boosting mechanism 4, the discharge mechanism 5, and the loading mechanism 6 are all connected to the chassis 2 through electrical signals.

[0026] The present invention is a pneumatic conveying equipment for transporting dilute phase materials. The dilute phase material is transported to the feed pipe 31 through the feeding mechanism 6. The dilute phase material is blown and pressurized at the starting end to promote long-distance transportation of the material. The multi-stage feed pipe 31 is connected with the three-way pipe 431. The boosting mechanism 4 performs multi-stage auxiliary boosting and assistance on the dilute phase material in the feed pipe 31 through the three-way pipe 431, and boosts the pressure synchronously in stages, which greatly reduces the energy consumption of the blowing power in the feeding mechanism 6. After completing the pneumatic conveying of the material, the feeding mechanism 6 injects water into the feed pipe 31, and the conveying mechanism 3 self-cleans the inner walls of the feed pipe 31 and the three-way pipe 431. The chassis 2 controls the bifurcation mechanism 43 to switch the working mode, the branch pipe 52 is connected with the three-way pipe 431, and the drainage mechanism 5 extracts the sewage in the feed pipe 31 and the three-way pipe 431.

[0027] like Figure 2 、 Figure 3 、 Figure 4 As shown, the conveying mechanism 3 also includes an internal cleaning mechanism 32, a reciprocating mechanism 33 and an internal magnetic block 34. The internal cleaning mechanism 32 includes a front ring 321 and a rear ring 324. The reciprocating mechanism 33 includes a side arc shell 331, a drive motor 332 and a strong magnetic block 335. The front ring 321 and the rear ring 324 are in contact with the inner wall of the feeding tube 31. The internal magnetic block 34 is fixedly connected to the front ring 321 and the rear ring 324. The side arc shell 331 is fixedly connected to the feeding tube 31. The internal magnetic block 34 is connected to the strong magnetic block 335 through magnetic force. The drive motor 332 is connected to the chassis 2 through electrical signals.

[0028] After completing the pneumatic conveying of materials, the feeding mechanism 6 injects water into the feeding pipe 31, and 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, and the inner magnetic block 34 drives the front ring 321 and the rear ring 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 internal cleaning mechanism 32 to clean and scrape the materials adhered to the inner walls of the feeding pipe 31 and the three-way pipe 431, and the drainage mechanism 5 extracts the sewage through the three-way pipe 431.

[0029] like Figure 3 As shown, the internal cleaning mechanism 32 also includes an inner sliding ring 322 and a cleaning brush 323. The inner sliding ring 322 is rotatably connected to the front ring 321 and the rear ring 324. A threaded track 3221 and inner blades 3222 are provided on the inner sliding ring 322. The threaded track 3221 is provided on the outer wall of the inner sliding ring 322. The cleaning brush 323 is fixedly connected to the threaded track 3221. The inner blades 3222 and the cleaning brush 323 are provided in several groups. Several groups of inner blades 3222 are evenly distributed along the circumference of the inner wall of the inner sliding ring 322, and several groups of inner sliding rings 322 are arranged along the threaded track 3221.

[0030] The feeding mechanism 6 continuously supplies air, and the high-pressure strong wind transported along the axis of the feeding pipe 31 acts on the inner fan blades 3222 uniformly distributed along the inner wall of the inner sliding ring 322. The front ring 321 and the rear ring 324 are fixedly assembled with the inner magnetic block 34. The front ring 321 and the rear ring 324 are relatively fixed under the magnetic adsorption of the strong magnetic block 335. The high-pressure strong wind drives the inner sliding ring 322 to rotate relative to the front ring 321 and the rear ring 324. The cleaning brushes 323 arranged along the threaded track 3221 adhere to the inner walls of the feeding pipe 31 and the three-way pipe 431. The materials are cleaned, swept and scraped without dead angles, and the cleaned impurities are retained in the sealed space formed by the front ring 321, the rear ring 324 and the inner wall of the feeding pipe 31. The strong magnetic block 335 drives the front ring 321 and the rear ring 324 to move to the fork of the three-way pipe 431 and stops. The high-pressure strong wind continues to drive the inner slip ring 322 to rotate relative to each other, the bifurcation mechanism 43 switches the working mode, the branch pipe 52 is connected to the three-way pipe 431, and the drainage mechanism 5 extracts the impurities in the sealed space formed by the front ring 321, the rear ring 324 and the inner wall of the feeding pipe 31.

[0031] 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, a threaded hole 3341 is provided on the pulley seat 334, the threaded rod 333 and the threaded hole 3341 are threadedly connected, the side arc shell 331 is provided with a slide rail 3311, the pulley seat 334 is slidably connected to the slide rail 3311, and the strong magnetic block 335 is fixedly connected to the pulley seat 334.

[0032] The electronically controlled drive motor 332 of the chassis 2 outputs a fixed-axis torque to the threaded rod 333, and the torque of the threaded rod 333 is transmitted to the pulley seat 334 through the threaded assembly between the threaded rod 333 and the threaded hole 3341. The pulley seat 334 moves back and forth along the slide rail 3311, and the strong magnetic block 335 fixedly assembled on the pulley seat 334 drives the front ring 321 and the rear ring 324 to move back and forth along the inner wall of the feed tube 31.

[0033] like Figure 5 As shown, the boosting 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, and an air inlet branch pipe 4311 and an air outlet branch pipe 4312 are provided on the three-way pipe 431. The air inlet 421 is connected to a group of air outlet branches 4312 away from the three-way pipe 62 through a pipeline, the air outlet 422 is connected to a group of air inlet branches 4311 away from the discharge pipe 7 through a pipeline, and the air inlet branch pipe 4311 is connected to the adjacent air outlet branch pipe 4312 through a pipeline.

[0034] The electronically controlled circulation pump 42 of the chassis 2 outputs a high-pressure airflow to a group of air intake branches 4311 away from the discharge pipe 7 through the air outlet 422. The high-pressure airflow enters the three-way pipe 431 from the air intake branch pipe 4311 and enters the adjacent air intake branch pipe 4311 from the air outlet branch pipe 4312. Under the action of the circulation pump 42, the high-pressure and high-speed airflow circulates at high speed in the linearly evenly distributed multi-stage three-way pipe 431. Since the branch pipe 4313 of the three-way pipe 431 is inclined in the same direction as the direction of gas flow, the high-speed circulating airflow in the branch pipe 4313 generates a negative pressure, which generates a negative pressure effect on the main pipe of the three-way pipe 431, provides a component of force along the direction of the branch pipe 4313 to the dilute phase material, and provides a pressurization assist effect on the dilute phase material flowing in the three-way pipe 431.

[0035] like Figure 6 、 Figure 7 As shown, the flow branch 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 air inlet branch pipe 4311, and the second electrically controlled valve 433 is fixedly connected to the air outlet branch pipe 4312. The electrically controlled iris ring 434 is provided with filter holes 4341, and the filter holes 4341 are provided in several groups. The several groups of filter 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 through electrical signals.

[0036] When the high-speed circulating airflow of the circulation pump 42 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 filter holes 4341 evenly distributed on the circumference. 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 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 electronically controlled iris ring 434 opens, and the drainage mechanism 5 extracts the impurities cleaned in the feeding pipe 31 through the branch pipe 4313.

[0037] 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 electrical signals.

[0038] During the self-cleaning operation, the first electrically controlled valve 432 and the second electrically controlled valve 433 isolate the air inlet branch pipe 4311 and the air outlet branch pipe 4312, so that the three-way pipe 431 is connected only to the branch pipe 52, the electrically controlled iris ring 434 is opened, and the water pump 53 extracts the impurities cleaned in the feed pipe 31 through the branch pipe 52 to the water outlet pipe 54 for discharge.

[0039] like Figure 8 As shown, the feeding mechanism 6 also includes a strong blower 61, a discharge machine 63 and a third electrically controlled valve 64. The strong blower 61, the discharge machine 63 and the third electrically controlled valve 64 are all fixedly connected to the three-way pipe 62. The strong blower 61, the discharge machine 63 and the third electrically controlled valve 64 are all connected to the chassis 2 through electrical signals.

[0040] During loading, the dilute phase material is transported to the three-way pipe 62 through the discharger 63, the chassis 2 controls the third electric control valve 64 to open, and the strong fan 61 blows and pressurizes the dilute phase material at the starting end to push the material forward for long-distance transportation. During self-cleaning operation, water is supplied to the three-way pipe 62 through the discharger 63.

[0041] The working principle of the present invention is as follows: the dilute phase material is transported to the three-way pipe 62 through the feeder 63, the strong fan 61 blows and pressurizes the dilute phase material at the starting end, and pushes the material forward for long-distance transportation, the multi-stage feed pipe 31 is connected with the three-way pipe 431, the electronically controlled circulation pump 42 of the chassis 2 outputs high-pressure airflow through the air outlet 422 to a group of air inlet branches 4311 away from the feeder 7, the high-pressure airflow enters the three-way pipe 431 from the air inlet branch 4311, and enters the adjacent air inlet branch 4311 from the air outlet branch 4312, and the high-pressure and high-speed air flows into the three-way pipe 4312. Under the action of the circulation pump 42, the flow circulates at high speed in the linearly evenly distributed multi-stage three-way pipe 431. Since the branch pipe 4313 of the three-way pipe 431 is inclined in the same direction as the gas flow, the high-speed circulating airflow in the branch pipe 4313 generates negative pressure, providing a force component along the direction of the branch pipe 4313 for the dilute phase material, performing multi-stage auxiliary pressurization on the dilute phase material in the feeding pipe 31, and synchronously pressurizing in stages, greatly reducing the energy consumption of the blowing power in the strong fan 61, and completing pneumatic conveying. After the material is fed, the unloader 63 injects water into the feed pipe 31, and the high-pressure strong wind transported along the axis of the feed pipe 31 acts on the inner fan blade 3222. The high-pressure strong wind drives the inner sliding ring 322 to rotate relative to the front ring 321 and the rear ring 324. The materials adhered to the inner wall of the feed pipe 31 and the three-way pipe 431 are cleaned and scraped away without dead angles by a plurality of cleaning brushes 323 arranged along the threaded track 3221. The cleaned impurities are retained in the space formed by the front ring 321, the rear ring 324 and the inner wall of the feed pipe 31. In the sealed space, the strong magnetic block 335 drives the front ring 321 and the rear ring 324 to move to the fork of the three-way pipe 431 and stops. The high-pressure strong wind continues to drive the inner slip ring 322 to rotate relative to each other. During the self-cleaning operation, the first electrically controlled valve 432 and the second electrically controlled 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 electrically controlled iris ring 434 is opened, and the water pump 53 extracts the impurities cleaned in the feed pipe 31 through the branch pipe 52 and discharges them into the water outlet pipe 54.

[0042] 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 embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A pneumatic conveying device with internal cleaning function, characterized in that: The conveying device comprises a chassis (1), a chassis (2), a conveying mechanism (3), a pressurizing mechanism (4), a drainage mechanism (5), a feeding mechanism (6) and a discharge pipe (7), wherein the conveying mechanism (3) comprises a feeding pipe (31), the pressurizing mechanism (4) comprises an assembly frame (41) and a bifurcated flow mechanism (43), the bifurcated flow mechanism (43) comprises a three-way pipe (431), the drainage mechanism (5) comprises a side frame (51) and a branch pipe (52), the feeding mechanism (6) comprises a three-way pipe (62), the chassis (2), the feeding pipe (31), the assembly frame (41), the three-way pipe (431), the side frame (51), the three-way pipe (6 2) are fixedly connected to the base frame (1), the feed pipe (31) and the three-way pipe (431) are provided with a plurality of groups, and the plurality of groups of the feed pipe (31) and the three-way pipe (431) are linearly evenly distributed along the base frame (1), the three-way pipe (62) is fixedly connected to a group of feed 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 feed pipe (31) and the branch pipe (52), and the conveying mechanism (3), the boosting mechanism (4), the discharge mechanism (5), and the loading mechanism (6) are all connected to the chassis (2) through electrical signals.

2. The pneumatic conveying equipment with internal cleaning function according to claim 1, characterized in that: The conveying mechanism (3) further comprises an inner cleaning mechanism (32), a reciprocating mechanism (33) and an inner magnetic block (34); the inner cleaning mechanism (32) comprises a front collar (321) and a rear collar (324); the reciprocating mechanism (33) comprises a side arc shell (331), a driving 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 tube (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 tube (31); the inner magnetic block (34) is connected to the strong magnetic block (335) by magnetic force; and the driving motor (332) is connected to the chassis (2) by electrical signals.

3. The pneumatic conveying equipment with internal cleaning function according to claim 2, characterized in that: The inner cleaning mechanism (32) further comprises an inner sliding ring (322) and a cleaning brush (323), wherein the inner sliding ring (322) is rotatably connected to the front sleeve ring (321) and the rear sleeve ring (324), and the inner sliding ring (322) is provided with a threaded track (3221) and inner blades (3222), wherein the threaded track (3221) is provided on the outer wall of the inner sliding ring (322), and the cleaning brush (323) is fixedly connected to the threaded track (3221), and the inner blades (3222) and the cleaning brush (323) are provided in a plurality of groups, wherein the plurality of groups of the inner blades (3222) are evenly distributed along the circumference of the inner wall of the inner sliding ring (322), and the plurality of groups of the inner sliding ring (322) are arranged along the threaded track (3221).

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

5. The pneumatic conveying equipment with internal cleaning function according to claim 1, characterized in that: The boosting mechanism (4) further comprises a circulation pump (42), the circulation pump (42) being provided with an air inlet (421) and an air outlet (422), the circulation pump (42) being fixedly connected to the assembly frame (41), the three-way pipe (431) being provided with an air inlet branch pipe (4311) and an air outlet branch pipe (4312), the air inlet (421) being connected to a group of air outlet branch pipes (4312) away from the three-way pipe (62) via a pipe, the air outlet (422) being connected to a group of air inlet branch pipes (4311) away from the discharge pipe (7) via a pipe, and the air inlet branch pipe (4311) being connected to an adjacent air outlet branch pipe (4312) via a pipe.

6. The pneumatic conveying equipment with internal cleaning function according to claim 5, characterized in that: The bifurcated flow mechanism (43) further comprises 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 further provided on the three-way pipe (431); the electrically controlled iris ring (434) is fixedly connected to the branch pipe (4313); 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 first electrically controlled valve (432), the second electrically controlled valve (433) and the air outlet branch pipe (4312) are fixedly connected, the electrically controlled iris ring (434) is provided with filter holes (4341), the filter holes (4341) are provided in a plurality of groups, and the plurality of groups of filter holes (4341) are evenly distributed along the circumference of the electrically controlled iris ring (434), and 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.

7. The pneumatic conveying equipment with internal cleaning function according to claim 1, characterized in that: The drainage mechanism (5) further comprises 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) via pipes; and the water pump (53) is connected to the chassis (2) via electrical signals.

8. The pneumatic conveying equipment with internal cleaning function according to claim 1, characterized in that: The feeding mechanism (6) further comprises a strong blower (61), a blanking machine (63) and a third electrically controlled valve (64); the strong blower (61), the blanking machine (63) and the third electrically controlled valve (64) are all fixedly connected to the three-way pipe (62); and the strong blower (61), the blanking machine (63) and the third electrically controlled valve (64) are all connected to the chassis (2) via electrical signals.

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