CN107324081B - Pneumatic conveying device for powdery material - Google Patents
Pneumatic conveying device for powdery material Download PDFInfo
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- CN107324081B CN107324081B CN201710682334.5A CN201710682334A CN107324081B CN 107324081 B CN107324081 B CN 107324081B CN 201710682334 A CN201710682334 A CN 201710682334A CN 107324081 B CN107324081 B CN 107324081B
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- storage bin
- discharging
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- bin
- pneumatic conveying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/32—Filling devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/72—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices
- B01F27/726—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with two helices with opposite pitch on the same shaft; with two helices on the same axis, driven in opposite directions or at different speeds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/46—Devices for emptying otherwise than from the top using screw conveyors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/18—Preventing escape of dust
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention discloses a pneumatic conveying device for powdery materials, which aims to solve the problems that the traditional conveying device is easy to cause dust blockage and blowback. According to the pneumatic conveying device for powdery materials, the continuous conveying path is continuous, so that the feeding efficiency is higher, the stirring of powder materials is more uniform, the dust in a storage bin is reduced while the powder materials are discharged, and dust-free operation can be realized.
Description
Technical Field
The invention relates to the field of powdery material conveying, in particular to a pneumatic conveying device for powdery materials.
Background
The existing powdery material conveying mode comprises four modes of suction conveying mode, pressure conveying mode, mixing mode and flow conveying mode, when the gas pressure in a conveying pipeline is lower than the atmospheric pressure, the pneumatic conveying mode is realized, after a fan is started, when a certain vacuum degree is achieved in the pipeline, air in the atmosphere carries materials to enter the pipeline through a suction nozzle, the materials are conveyed to a separator at a discharging end along the pipeline, in the separator, the materials are separated from the air, the separated materials are discharged from the bottom of the separator, and the air is discharged to the atmosphere through the fan after being dedusted through a deduster, so that the common conveying device has the problems of complex structure, low conveying efficiency, easiness in dust blockage, blowback, unsmooth feeding and leakage.
Aiming at the problems, the powder material conveying device disclosed in the Chinese patent with the publication number of CN105752689 is characterized in that a discharging pipe is arranged in a charging barrel, and a hydraulic device is further arranged in the charging barrel and used for pressing down powder material, so that the conveying efficiency is improved, and the problems of dust blockage, blowback and the like are solved. The present invention provides a new solution to the above-mentioned problems.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a pneumatic conveying device for powdery materials, which has the advantages of smooth blanking and dust pollution reduction.
The technical aim of the invention is realized by the following technical scheme: the utility model provides a pneumatic conveying device of powdery material, includes the storage silo, the storage silo top is provided with feed arrangement, be provided with the agitating unit who is used for preventing the powder caking in the storage silo, the storage silo bottom is provided with discharge mechanism, discharge mechanism including the feed bin of intercommunication in the storage silo bottom and the pneumatic conveying mechanism who communicates with the discharge bin, be provided with the dust exhaust subassembly that is used for taking out the raise dust in the storage silo between storage silo and the discharge bin.
Through adopting above-mentioned technical scheme, the powder is carried by feed arrangement and is got into the storage silo, stir on one side through agitating unit in the storage silo, send the powder of stirring completion downwards to discharge mechanism on one side, discharge mechanism conveys the powder under pneumatic conveying mechanism's effect, form negative pressure in discharge mechanism, thereby inhale the powder downwards and send, simultaneously because form the negative pressure in the unloading mechanism, dust discharging subassembly communicates in the storage silo top, so can together inhale discharge mechanism with the dust of lifting in the storage silo, thereby reduce the raise dust in the storage silo, the technological effect of reducing the raise dust pollution has been reached, guarantee the smooth and easy of unloading simultaneously.
The invention is further provided with: the stirring device comprises a rotating shaft which is arranged in a storage bin in a rotating mode, an outer spiral belt is connected to the side wall of the rotating shaft through a connecting rod, the rotation direction of the outer spiral belt is symmetrically set at the midpoint of the rotating shaft, an inner spiral belt which corresponds to the outer spiral belt in the opposite rotation direction is arranged on the connecting rod, and the inner spiral belt is arranged between the outer spiral belt and the rotating shaft.
Through adopting above-mentioned technical scheme, when placing the powder in the storage silo, the pivot drives interior spiral shell area and outer spiral shell area and rotates simultaneously, when the pivot drives interior spiral shell area and rotates, interior spiral shell area can be with the powder at storage silo middle part to both sides propelling movement to opposite because the spiral shell area is in the spiral shell area with the spiral shell area in the middle part powder to both sides propelling movement, the powder of outer spiral shell area with both sides is to the middle part propelling movement when the spiral shell area is with the middle part powder to both sides propelling movement, thereby realize the balance of powder in the storage silo, can realize the intensive mixing of powder simultaneously, prevent that the powder from taking place the caking phenomenon, the unloading of being convenient for.
The invention is further provided with: the storage bin is internally provided with a material level detection device for detecting the material level, the material level detection device comprises a material level detection component arranged on the side wall of the storage bin and a material level detection component arranged at the bottom of the storage bin and the connecting rod, the material level detection component is connected with a control module through a circuit, and the control module is connected with an alarm.
Through adopting above-mentioned technical scheme, be provided with the material loading level detection component and the material unloading level detection component that can detect material loading level and material unloading level in the storage silo, when the powder arrived material loading level detection component, material loading level detection component sensed and sent the signal to control module, control module makes judgement back control feed arrangement stop operation to the signal, simultaneously send the signal to the alarm and make the alarm send audible and visual alarm, when the powder in the storage silo reaches low material level, the material unloading level detection component can detect the powder and be located low material level, and send the signal to control module, control module control alarm sends audible and visual alarm for remind the workman in time the feed supplement.
The invention is further provided with: the discharging mechanism comprises a discharging hole formed in the middle of the bottom surface of the storage bin, a discharging screw is rotatably arranged in the discharging bin, a discharging funnel is arranged on the lower surface of one end of the discharging bin, and the discharging funnel is connected to the pneumatic conveying mechanism.
Through adopting above-mentioned technical scheme, the middle part in the storage silo bottom surface is offered to the discharge gate, stirring mechanism stirs the back to middle part propelling movement and makes the powder get into the discharge silo by the discharge gate, the ejection of compact spiral in the discharge silo rotates and pushes powder to discharge hopper one side, because the discharge hopper below is provided with pneumatic conveying mechanism, pneumatic conveying mechanism during operation can form the negative pressure in the discharge hopper below, form decurrent suction to the powder in the discharge hopper, improve the unloading rate, the dust subassembly is drawn into discharge mechanism downwards with the raise dust in the storage silo simultaneously and is discharged together, dust pollution has been reduced.
The invention is further provided with: the discharge bin is close to discharge hopper one end and has seted up the viewing aperture, the viewing aperture rotates and is provided with the observation board.
Through adopting above-mentioned technical scheme, the observation mouth has been seted up to the one end that is close to ejection of compact funnel at ejection of compact storehouse, still articulates on the inner wall of observation mouth has the observation board, and the observation board seals the observation mouth through rotating, opens the observation board and can see the ejection of compact condition of ejection of compact storehouse, and the workman of being convenient for carries out real-time supervision to the unloading condition, guarantees going on smoothly of unloading.
The invention is further provided with: the pneumatic conveying mechanism comprises a Roots blower and an air inlet pipe connected to the Roots blower, the air inlet pipe is connected with a Venturi tube, the discharge end of the discharge hopper is communicated with a feed inlet on the side wall of the Venturi tube, and the air inlet pipe is provided with a detection meter for detecting the pressure in the pipeline.
Through adopting above-mentioned technical scheme, roots's fan produces wind-force and gets into venturi through the intake pipe, venturi lateral wall connection ejection of compact funnel can blow off the powder that gets into venturi by ejection of compact funnel, be provided with the detecting table in the intake pipe, the detecting table is used for detecting the wind pressure in the pneumatic conveying mechanism, if take place to block up in the venturi, the detecting table can detect intake pipe internal pressure too high, can lead to the wind pressure too little when roots's fan breaks down, the detecting table can detect the wind pressure in the intake pipe at this moment too high or too low, and stop and report to the police through control module control feeding, remind the workman in time to overhaul.
The invention is further provided with: the dust exhaust assembly comprises a dust exhaust hole formed in the side wall of the storage bin and a dust inlet hole formed in the upper part of the discharge bin, and a dust exhaust pipe is connected between the dust exhaust hole and the dust inlet hole.
Through adopting above-mentioned technical scheme, with storage silo top and unloading mechanism intercommunication through the dust exhaust pipe, when forming the negative pressure in the unloading mechanism like this, the raise dust in the storage silo can enter into in the unloading mechanism through the dust exhaust pipe, reaches the technological effect of dust fall.
The invention is further provided with: the feeding device comprises a feeding pipe arranged above a storage bin, an iron removing component for removing scrap iron in powder is arranged on the side wall of the feeding pipe, a screw conveyer is connected above the feeding pipe, and a feeding hopper is arranged above the screw conveyer.
Through adopting above-mentioned technical scheme, the powder first gets into the feeder hopper, later gets into screw conveyer, and screw conveyer sends the powder into the inlet pipe, and when the powder was through the inlet pipe, if have metal impurity such as iron fillings in the powder, can adsorb by deironing subassembly to reach the purpose of edulcoration.
The invention is further provided with: the feeding level detection assembly comprises a first reed pipe arranged on the outer side wall of the storage bin and a detection plate arranged on the inner wall of the storage bin in a rotating mode, a magnet is arranged on the detection plate, when the detection plate rotates to be in contact with the inner wall of the storage bin, the magnet is equal to the first reed pipe in height and closest to the first reed pipe, and the first reed pipe is connected with a control module through a circuit.
Through adopting above-mentioned technical scheme, when the powder is enough, under rabbling mechanism's drive, the powder from bottom to top rotates and contacts with the evagination cambered surface of first pick-up plate to can upwards lift up first pick-up plate, make first pick-up plate upwards lift up and make magnet keep away from first tongue tube around the pin joint, indicate the powder height in the storage silo at predetermined highest material level point this moment.
The invention is further provided with: the utility model discloses a vibrating spring, the feeder hopper below is provided with vibrating spring, the feeder hopper is provided with the vibrator.
Through adopting above-mentioned technical scheme, the vibrator starts during the feeding to drive the feeder hopper and shake, owing to set up vibrating spring, increased the vibrations effect of feeder hopper, the feeding of being convenient for.
In summary, the invention has the following beneficial effects:
firstly, through arranging the dust discharging assembly, the dust in the storage bin can be pumped out together during discharging, so that dust pollution is reduced;
secondly, through setting up rabbling mechanism into inside and outside and revolve to opposite structure for powder stirring in the storage silo is more even, prevents the caking.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic top view of the whole of the present invention;
FIG. 3 is a schematic view of a part of the structure of the discharging mechanism;
FIG. 4 is a detailed schematic diagram of the discharging mechanism;
FIG. 5 is a schematic view of the structure of the discharge mechanism and the dust exhaust assembly;
FIG. 6 is a schematic structural view of a stirring device;
fig. 7 is a schematic structural view of the iron removal assembly.
In the figure: 1. a storage bin; 2. a feeding device; 3. a stirring device; 4. a discharging mechanism; 5. a dust exhaust assembly; 6. a material level detecting device; 7. a discharge port; 8. discharging the material bin; 9. a discharging screw; 10. a discharging motor; 11. a torque limiting coupling; 12. a discharge hopper; 13. pneumatic conveying mechanism; 14. an observation port; 15. a boss; 16. an observation plate; 17. dust exhaust holes; 18. dust inlet holes; 19. a dust exhaust pipe; 20. roots blower; 21. an air inlet pipe; 22. a venturi tube; 23. a detection table; 24. a rotating shaft; 25. a stirring motor; 26. an end cap; 27. a connecting rod; 28. an outer helical band; 29. an inner ribbon; 30. a loading level detection assembly; 31. a blanking level detection assembly; 32. the first reed switch; 33. a first detection plate; 34. a magnet; 35. the second reed switch; 36. a cross bar; 37. a second detection plate; 38. an alarm; 39. a feed pipe; 40. a screw conveyor; 41. a feed hopper; 42. a bracket; 43. a vibration spring; 44. a vibrator; 45. a sieve plate; 46. an iron removal assembly; 47. an opening; 48. sealing cover; 49. a cover plate; 50. a lamp; 51. an observation hole; 52. and a control module.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
The utility model provides a pneumatic conveying device of powder material, as shown in fig. 1, including storage silo 1, storage silo 1 top is provided with feed arrangement 2, a stirring device 3 (mark in fig. 2) that is used for preventing the powder caking is still provided with in storage silo 1 for in sending the powder material into storage silo 1, when stirring the powder material, the powder can be at the middle part of storage silo 1 ejection of compact downwards, be provided with discharge mechanism 4 in storage silo 1 below, be provided with dust discharging assembly 5 between storage silo 1 lateral wall and discharge mechanism 4, the powder after the stirring is directly got into discharge mechanism 4 in storage silo 1 bottom and is discharged, the raise dust that is raised in storage silo 1 is drawn into discharge mechanism 4 through dust discharging assembly 5 and is discharged in the lump, still be provided with the material level detection device 6 that is used for detecting the material that goes up of powder material and discharges down in storage silo 1.
As shown in fig. 4, the discharging mechanism 4 comprises a discharging hole 7 arranged at the bottom of the storage bin 1, a discharging bin 8 is arranged below the discharging hole 7, a discharging screw 9 is rotationally arranged in the discharging bin 8, and powder stirred by the storage bin 1 enters the discharging bin 8 and is conveyed to one end of the discharging bin 8 by the discharging screw 9; the end part of the discharging screw 9 is connected with a discharging motor 10, the discharging motor 10 drives the discharging screw 9 to rotate and forward convey powder, a limited torque coupler 11 is arranged on an output shaft of the discharging motor 10, the limited torque coupler 11 is connected to the discharging screw 9 through a chain mechanism and drives the discharging screw 9 to rotate, and when the torque born by the discharging screw 9 is overlarge due to blockage in the discharging bin 8, the limited torque coupler 11 can slip so as to play a role in protecting the discharging motor 10; the discharge hopper 12 is connected with the discharge end of the discharge bin 8, the pneumatic conveying mechanism 13 is connected with the lower side of the discharge hopper 12, the pneumatic conveying mechanism 13 can blow the powder falling from the discharge hopper 12 forward, as shown in fig. 5, an observation port 14 is formed in one end, close to the discharge hopper 12, of the discharge bin 8, a boss 15 is arranged on the inner wall of the observation port 14, an observation plate 16 (marked in fig. 3) is hinged to the inner wall of the observation port 14, the observation plate 16 can abut against the boss 15 through rotation and seal the observation port 14, and the discharge condition of the discharge bin 8 can be seen by opening the observation plate 16.
As shown in fig. 3 and 4, the dust discharging assembly 5 comprises a dust discharging hole 17 arranged on the upper side wall of the storage bin 1, and further comprises a dust inlet hole 18 arranged at the discharge end of the discharge bin 8, a dust discharging pipe 19 is connected between the dust discharging hole 17 and the dust inlet hole 18, the dust discharging pipe 19 can be a steel wire hose, when the pneumatic conveying mechanism 13 blows away the powder leaked from the discharge hopper 12, negative pressure is formed below the dust inlet hole 18, so that the dust in the storage bin 1 is sucked into the discharge bin 8 and is discharged by the pneumatic conveying mechanism 13, and therefore dust in the storage bin 1 is reduced, and dust pollution is reduced.
As shown in fig. 4, the pneumatic conveying mechanism 13 comprises a Roots blower 20, an air outlet of the Roots blower 20 is connected with an air inlet pipe 21, the air inlet pipe 21 is connected with a venturi tube 22, a discharging opening of a discharging funnel 12 is communicated with the side wall of the venturi tube 22, negative pressure is formed in the venturi tube 22 after the Roots blower 20 is started, powder can directly enter the venturi tube 22 from the discharging funnel 12 and is sent out under the driving of wind force, discharging is realized, meanwhile, as wind in the venturi tube 22 always flows backwards, negative pressure is formed below a dust inlet hole 18, and flying dust in a storage bin 1 is sucked into the venturi tube 22, and flying dust discharging is realized; the side wall of the air inlet pipe 21 is connected with a detection meter 23 for detecting the pressure in the air inlet pipe 21, the detection meter 23 can be an electric contact pressure meter, the venturi pipe 22 needs to work normally under certain pressure, when the venturi pipe 22 is blocked, the electric contact pressure meter detects that the pressure in the air inlet pipe 21 is higher than a specific value, the Roots blower 20 stops working and overhauls at the moment, when the Roots blower 20 breaks down, the electric contact pressure meter can detect that the air pressure in the air inlet pipe 21 is too low, thereby sending a signal to the control module 52, the control module 52 controls the feeding device 2 to stop feeding, meanwhile, the control module is connected with the alarm 38 and generates audible and visual alarm, and before the discharging screw 9 starts discharging, the Roots blower 20 starts to start discharging after keeping certain air pressure in the venturi pipe 22, and blocking can be avoided to a certain extent.
As shown in fig. 6, the stirring device 3 comprises a rotating shaft 24 rotatably arranged in the storage bin 1, one end of the rotating shaft 24 is connected with a stirring motor 25, and an end cover 26 is arranged at one end, far away from the stirring motor 25, of the storage bin 1, as shown in fig. 5, the end cover 26 is connected to the end part of the storage bin 1 through a bolt, and when maintenance is needed, the end cover 26 and the rotating shaft 24 are detached together, so that maintenance is convenient; a plurality of connecting rods 27 are welded on the rotating shaft 24, the connecting rods 27 are arranged perpendicular to the axis of the rotating shaft 24, an outer spiral belt 28 and an inner spiral belt 29 which are formed by twisting metal plates are welded on the connecting rods 27, the outer spiral belt 28 is arranged close to the inner wall of the storage bin 1, and the rotation direction of the outer spiral belt 28 rotates from two sides to the middle by taking the discharge hole 7 as a symmetry point, so that powder close to the inner wall of the storage bin 1 is pushed from two sides to the middle; an inner spiral belt 29 is welded on the connecting rod 27, the inner spiral belt 29 is positioned between the connecting rod 27 and the outer spiral belt 28, and the rotation direction of the inner spiral belt 29 is opposite to that of the outer spiral belt 28, so that powder close to the rotating shaft 24 can be pushed from the middle to two sides, the middle of the powder entering the storage bin 1 is pushed from the middle to two sides, the outer side is pushed from two sides to the middle, the powder in the storage bin 1 can be fully stirred to prevent caking, and the outer spiral belt 28 drives the powder to be pushed to the middle discharge hole 7 while stirring, so that the powder flows out from the discharge hole 7; since the total length of the outer ribbon 28 is greater than that of the inner ribbon 29, the width of the inner ribbon 29 is greater than that of the outer ribbon 28 in order to ensure equal force bearing areas of the inner ribbon 29 and the outer ribbon 28.
The material level detecting device 6 comprises an upper material level detecting component 30 for detecting an upper material level and a lower material level detecting component 31 for detecting a lower material level, as shown in fig. 2 and 3, the upper material level detecting component 30 comprises a first reed pipe 32 fixedly arranged on the outer side wall of the storage bin 1, the first reed pipe 32 is arranged at the highest position allowing powder to enter, a first detecting plate 33 is transversely hinged on the inner wall of the storage bin 1 and at the position corresponding to the first reed pipe 32, the first detecting plate 33 is arranged in an arc shape with a hinging point protruding downwards, a magnet 34 is connected on the first detecting plate 33 through a bolt, when the first detecting plate 33 rotates to be in contact with the inner wall of the storage bin 1, the magnet 34 is nearest to the first reed pipe 32 and enables the first reed pipe 32 to be connected, so as to send a detecting signal to the control module 52, when the powder is enough, the powder rotates upwards under the driving of the stirring mechanism and contacts with the cambered surface of the first detecting plate 33, and the first detecting plate 33 can be lifted upwards, so that the first detecting plate 33 is lifted upwards around the hinging point and enables the first reed pipe 33 to be far from the first reed pipe 32 to be at the preset height position inside the storage bin 1; as shown in fig. 5 and 6, the discharging level detecting assembly 31 comprises a second reed pipe 35 fixed on the outer wall of the bottom of the storage bin 1, a cross rod 36 is transversely welded at the end part of the connecting rod 27, a second detecting plate 37 is rotatably sleeved on the cross rod 36, a magnet 34 is fixed on the second detecting plate 37 through a bolt, when the cross rod 36 rotates to the bottom, if powder exists at the bottom of the storage bin 1, the magnet 34 rises upwards by a certain height and is larger than the minimum distance capable of starting the second reed pipe 35 when the magnet 34 rotates to the bottom, so that the second reed pipe 35 is in a disconnected state, the powder exists in the storage bin 1, when the powder in the storage bin 1 reaches a low level, the second detecting plate 37 rotates to the bottom of the storage bin 1 and then rotates downwards under the gravity of the magnet 34 to be close to a vertical state, at this time, the magnet 34 is close to the second reed pipe 35 and can start the second reed pipe 35, at this time, the second reed pipe 35 sends a signal to the control module 52, and referring to fig. 2, the powder in the storage bin 1 is shown to reach the low level; when the material level detection device 6 detects that the powder is positioned at a high material level or a low material level, the control module 52 is connected with the alarm 38, and sends a signal to the alarm 38 to enable the alarm 38 to alarm, and meanwhile, the feeding device 2 is controlled to stop feeding or timely feeding, wherein the control module 52 is a control circuit which is composed of a single chip microcomputer as a core.
As shown in fig. 1, the feeding device 2 comprises a feeding pipe 39 arranged on the upper surface of the storage bin 1, the feeding pipe 39 is connected with a screw conveyer 40, the discharging end of the screw conveyer 40 is connected to the feeding pipe 39, the other end of the screw conveyer is connected with a feeding hopper 41, the feeding hopper 41 is arranged on a bracket 42, a vibrating spring 43 is arranged between the bracket 42 and the feeding hopper 41, a vibrator 44 is fixedly connected to the side wall of the feeding hopper 41 through bolts, a sieve plate 45 is arranged at the inlet of the feeding hopper 41, powder is poured onto the sieve plate 45 of the feeding hopper 41, and then the vibrator 44 is started, so that the feeding hopper 41 vibrates and realizes feeding by vibrating the powder into the feeding hopper 41, and the vibrator 44 on the feeding hopper 41 can be started after a stirring motor 25 is started, so that the problem that the stirring motor 25 is difficult to start after feeding is avoided; the iron removing assembly 46 is arranged on the side wall of the feeding pipe 39, as shown in fig. 7, the iron removing assembly 46 comprises a magnet arranged on the side wall of the feeding pipe 39, when powder passes through the feeding pipe 39, metal impurities such as scrap iron in the powder can be sucked onto the magnet, so that the effect of removing the iron impurities is achieved, the iron removing assembly 46 further comprises an opening 47 formed in the side wall of the feeding pipe 39, a sealing cover 48 for sealing the opening 47 is hinged to the side wall of the feeding pipe 39, one end of the sealing cover 48, deviating from a hinged point, is locked on the side wall of the feeding pipe 39 through a lock catch, so that the opening 47 is closed, the sealing cover 48 can be opened every time, and scrap iron on the inner wall of the feeding pipe 39 is taken out for cleaning.
The feeding device 2 can also directly put the feeding hopper 41 above the storage bin 1, at the moment, equipment such as a lifter can be used for lifting powder above the feeding hopper 41, and then the powder enters the storage bin 1 through the feeding hopper 41, so that the screw conveyor 40 is omitted, and the feeding device is suitable for the condition of large feeding amount.
As shown in fig. 1, a cover plate 49 for covering an opening 47 at the upper end is arranged above the storage bin 1, the cover plate 49 can be fixed on the storage bin 1 through bolts, a lamp 50 is arranged on the cover plate 49, light emitted by the lamp 50 can directly irradiate into the storage bin 1, an observation hole 51 is further formed in the cover plate 49, the observation hole 51 is sealed by a transparent material, and thus when people are required to intuitively observe the working condition in the storage bin 1, the lamp 50 is opened and can be observed through the observation hole 51, and the working condition in the storage bin 1 is conveniently and intuitively monitored.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (9)
1. The utility model provides a pneumatic conveying device of powdery material, includes storage silo (1), its characterized in that: the automatic dust removing device is characterized in that a feeding device (2) is arranged above the storage bin (1), a stirring device (3) for preventing powder from caking is arranged in the storage bin (1), a discharging mechanism (4) is arranged at the bottom of the storage bin (1), the discharging mechanism (4) comprises a discharging bin (8) communicated with the bottom end of the storage bin (1) and a pneumatic conveying mechanism (13) communicated with the discharging bin (8), and a dust removing component (5) for removing dust in the storage bin (1) is arranged between the storage bin (1) and the discharging bin (8);
a material level detection device (6) for detecting the material level is arranged in the storage bin (1), the material level detection device (6) comprises a connecting rod (27) and a discharging material level detection component (31) arranged at the bottom of the storage bin (1), the material level detection device (6) is connected with a control module (52) through a circuit, and the control module (52) is connected with an alarm (38); the discharging level detection assembly (31) comprises a second reed pipe (35) fixed on the outer wall of the bottom of the storage bin (1), a cross rod (36) is transversely welded at the end part of the connecting rod (27), a second detection plate (37) is rotatably sleeved on the cross rod (36), and a magnet (34) is fixed on the second detection plate (37);
when the cross rod (36) rotates to the bottom of the storage bin (1), if powder exists at the bottom of the storage bin (1), the magnet (34) can be lifted upwards to a certain height when rotating to the bottom of the storage bin (1), and the distance is larger than the minimum distance capable of starting the second reed pipe (35), so that the second reed pipe (35) is in a disconnected state, and the fact that powder exists in the storage bin (1) is indicated; if powder in storage silo (1) reaches low material level, second pick-up plate (37) rotates behind storage silo (1) bottom and can rotate downwards under magnet (34) self gravity and be close to vertical state, and magnet (34) are close to second tongue tube (35) and can start second tongue tube (35) this moment, and second tongue tube (35) sends the signal to control module (52) this moment, shows that powder in storage silo (1) has reached low material level.
2. A pneumatic conveying apparatus for powdery materials according to claim 1, wherein: the stirring device (3) comprises a rotating shaft (24) which is arranged on the storage bin (1) in a rotating mode, an outer spiral belt (28) is connected to the side wall of the rotating shaft (24) through a connecting rod (27), the rotation direction of the outer spiral belt (28) is symmetrically set at the midpoint of the rotating shaft (24), an inner spiral belt (29) which is opposite to the outer spiral belt (28) in rotation direction is arranged on the connecting rod (27), and the inner spiral belt (29) is arranged between the outer spiral belt (28) and the rotating shaft (24).
3. A pneumatic conveying apparatus for powdery materials according to claim 2, wherein: the material level detection device (6) further comprises a material level detection assembly (30) arranged on the side wall of the storage bin (1).
4. A pneumatic conveying apparatus for powdery materials according to claim 1, wherein: the discharging mechanism (4) comprises a discharging hole (7) formed in the middle of the bottom surface of the storage bin (1), a discharging spiral (9) is rotationally arranged in the discharging bin (8), a discharging funnel (12) is arranged on the lower surface of one end of the discharging bin (8), and the discharging funnel (12) is connected to the pneumatic conveying mechanism (13).
5. A pneumatic conveying apparatus for powder materials as claimed in claim 4, wherein: an observation port (14) is formed in one end, close to the discharging hopper (12), of the discharging bin (8), and an observation plate (16) is rotatably arranged at the observation port (14).
6. A pneumatic conveying apparatus for powder materials as claimed in claim 4, wherein: the pneumatic conveying mechanism (13) comprises a Roots blower (20) and an air inlet pipe (21) connected to the Roots blower (20), the air inlet pipe (21) is connected with a venturi tube (22), the discharge end of the discharge hopper (12) is communicated with a feed inlet on the side wall of the venturi tube (22), and the air inlet pipe (21) is provided with a detection meter (23) for detecting the pressure in a pipeline; the dust exhaust assembly (5) comprises a dust exhaust hole (17) formed in the side wall of the storage bin (1) and a dust inlet hole (18) formed above the discharge bin (8), and a dust exhaust pipe (19) is connected between the dust exhaust hole (17) and the dust inlet hole (18).
7. A pneumatic conveying apparatus for powdery materials according to claim 1, wherein: the feeding device (2) comprises a feeding pipe (39) arranged above the storage bin (1), an iron removing component (46) for removing scrap iron in powder is arranged on the side wall of the feeding pipe (39), a screw conveyer (40) is connected above the feeding pipe (39), and a feeding hopper (41) is arranged above the screw conveyer (40).
8. A pneumatic conveying apparatus for powdery materials as claimed in claim 3, wherein: the feeding level detection assembly (30) comprises a first reed pipe (32) arranged on the outer side wall of the storage bin (1), and a detection plate arranged on the inner wall of the storage bin (1) in a rotating mode, wherein the detection plate is provided with a magnet (34), when the detection plate rotates to be in contact with the inner wall of the storage bin (1), the magnet (34) is equal in height and closest to the first reed pipe (32), and the first reed pipe (32) is connected with a control module (52) through a circuit.
9. A pneumatic conveying apparatus for powder materials as claimed in claim 7, wherein: a vibrating spring (43) is arranged below the feeding hopper (41), and a vibrator (44) is arranged on the feeding hopper (41).
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| CN201710682334.5A CN107324081B (en) | 2017-08-10 | 2017-08-10 | Pneumatic conveying device for powdery material |
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| GB2569941A (en) * | 2017-11-17 | 2019-07-10 | Xaar 3D Ltd | Apparatus for the manufacture of three-dimensional objects |
| CN110654872B (en) * | 2019-10-23 | 2024-09-13 | 潍坊新希望六和饲料科技有限公司 | Uniform-speed discharging mechanism of pneumatic conveying pipeline for feed discharging |
| CN112045855B (en) * | 2020-09-16 | 2021-12-03 | 山东儒新新型建材科技有限公司 | Intelligent mobile dry-mixed mortar instant mixing equipment |
| CN113996784B (en) * | 2020-11-27 | 2023-08-22 | 安徽九华富康冶金材料有限公司 | Powder storage device for powder metallurgy |
| CN114873278B (en) * | 2022-05-24 | 2023-12-22 | 中国海洋石油集团有限公司 | Drilling cuttings storage conveyor |
| CN117065924B (en) * | 2023-10-16 | 2023-12-19 | 江苏恒博气力输送设备制造有限公司 | Material dust recycling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2898740Y (en) * | 2005-11-25 | 2007-05-09 | 查晓峰 | Spiral belt rake vacuum drier |
| CN202124617U (en) * | 2011-06-17 | 2012-01-25 | 内蒙古河套酒业集团股份有限公司 | Full-automatic mixer |
| JP2014001070A (en) * | 2012-06-21 | 2014-01-09 | Kawata Mfg Co Ltd | Powder supply device |
| CN202725069U (en) * | 2012-08-27 | 2013-02-13 | 双龙集团有限公司 | Horizontal spiral ribbon mixer |
| CN102935338A (en) * | 2012-09-27 | 2013-02-20 | 广东电网公司佛山供电局 | Laterally-horizontal stirrer for electric cable low thermal resistance protection filling medium |
| CN204490049U (en) * | 2015-01-26 | 2015-07-22 | 张友晶 | From cleaning type coal powder conveyer |
| CN205471741U (en) * | 2016-01-12 | 2016-08-17 | 西安交通大学 | Can accurate regulation give machine supplying powder of powder speed |
| CN205739537U (en) * | 2016-05-19 | 2016-11-30 | 江苏中建材环保研究院有限公司 | A kind of flue gas of glass melting furnace tempering system Calx blanking device |
| CN205980650U (en) * | 2016-08-18 | 2017-02-22 | 江西赛维Ldk光伏硅科技有限公司 | Dry agitator |
| CN205906758U (en) * | 2016-08-18 | 2017-01-25 | 泉州市德化县丰弘机械有限公司 | Portable numerical control ration feeding funnel |
| CN207242988U (en) * | 2017-08-10 | 2018-04-17 | 海宁常青节能科技有限公司 | A kind of Pneumatic conveyer of granular material |
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