CN209956983U - High-precision negative pressure pneumatic conveying weighing system - Google Patents
High-precision negative pressure pneumatic conveying weighing system Download PDFInfo
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- CN209956983U CN209956983U CN201920838774.XU CN201920838774U CN209956983U CN 209956983 U CN209956983 U CN 209956983U CN 201920838774 U CN201920838774 U CN 201920838774U CN 209956983 U CN209956983 U CN 209956983U
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- 238000005303 weighing Methods 0.000 title claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 59
- 239000000463 material Substances 0.000 claims abstract description 40
- 238000005243 fluidization Methods 0.000 claims abstract description 18
- 239000000428 dust Substances 0.000 claims description 19
- 230000005484 gravity Effects 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 4
- 239000006052 feed supplement Substances 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 239000006229 carbon black Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
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- 238000005272 metallurgy Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
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- 239000013589 supplement Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/54—Large containers characterised by means facilitating filling or emptying
- B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
- B65D88/70—Large containers characterised by means facilitating filling or emptying preventing bridge formation using fluid jets
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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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/24—Gas suction systems
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
- G01G17/06—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes having means for controlling the supply or discharge
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The utility model relates to a machine-building field specifically discloses a high accuracy negative pressure pneumatic conveying weighing system, including feed bin and feeder, the export of feeder is connected through first conveying pipeline and spiral feed mechanism upper end feeder hopper side, and spiral feed mechanism upper end feeder hopper side still is connected with the manifold through second conveying pipeline, and spiral feed mechanism feeder hopper upper end is equipped with the broken mechanism that encircles of pulse fluidization, and the broken mechanism that encircles of pulse fluidization is connected with the gas bag, and the gas bag is connected with the manifold simultaneously, and spiral feed mechanism discharge end passes through pneumatic push-pull valve and flexible coupling pipe and is connected with weighing hopper balance. The utility model discloses an adjust the feeder and carry out the feed and carry out the coarse weighing to the hopper balance in, carry out accurate feed supplement measurement to required weight through the material of storing in the spiral feed mechanism feeder hopper simultaneously, and then realize the transport and the high accuracy of material simultaneously and weigh, solved the problem that current negative pressure pneumatic conveying weighing system can't satisfy the user and weigh the demand fast to the high accuracy.
Description
Technical Field
The utility model relates to the field of machine-building, specifically a high accuracy negative pressure pneumatic conveying weighing system.
Background
At present, a negative pressure pneumatic conveying weighing system is generally adopted in rubber factories, chemical metallurgy, food and other industries. Chinese patent No. CN101464184B discloses a negative pressure pneumatic conveying weighing system, which mainly comprises a rotary feeder connected below a storage bin, an outlet of the rotary feeder is connected with a material acceleration chamber, the material acceleration chamber is connected with one end of a conveying pipeline, the other end of the conveying pipeline is connected with an inlet of a powder scale, and a dust remover is connected above the powder scale through a flange.
However, the existing negative pressure pneumatic conveying weighing system in the market generally has the problem of low weighing precision. This is because the negative pressure pipeline distance is longer, generally at tens meters to hundreds meters, though realize fast feed, slow feed and crawl feed through rotary feeder variable frequency control feeding volume, nevertheless because the material is carried in the pipeline and needs the certain time, the difficult accurate control of material volume in addition carry the material and get into behind the balance not eliminate the influence of vacuum in the balance to weighing, and then lead to weighing the display value and seriously lag, can't satisfy the demand that the user weighed high accuracy fast. Therefore, it is an urgent need to solve the problem of designing a high-precision negative-pressure pneumatic conveying weighing system.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high accuracy negative pressure pneumatic conveying weighing system to solve the problem that the current negative pressure pneumatic conveying weighing system who proposes can't satisfy user's high accuracy and weigh the demand fast among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a high-precision negative-pressure pneumatic conveying weighing system comprises a storage bin and a feeder connected below the storage bin, wherein an outlet of the feeder is connected with the side surface of a feed hopper at the upper end of a spiral feeding mechanism through a first conveying pipeline, and the side surface of the feed hopper at the upper end of the spiral feeding mechanism is also connected with a collecting pipe through a second conveying pipeline; the upper end of the feed hopper of the spiral feeding mechanism is provided with a pulse fluidization arch breaking mechanism used for pulse fluidization of materials, the pulse fluidization arch breaking mechanism is connected with an air bag, the air bag is connected with a collecting pipe, the discharge end of the spiral feeding mechanism is connected with a gravity slide pipeline, and the gravity slide pipeline is connected with a hopper scale used for weighing powder.
As a further aspect of the present invention: and a filter assembly is arranged on the first conveying pipeline, and an air inlet hand valve is arranged on the filter assembly.
As a further aspect of the present invention: the pulse fluidization arch breaking mechanism comprises a pulse air pipeline connected with the upper end of a feed hopper of the spiral feeding mechanism, and a pulse valve and a manual valve are arranged on the pulse air pipeline.
As a further aspect of the present invention: the spiral feeding mechanism is fixedly provided with a motor reducer through a sealing bearing assembly; the motor reducer plays a role in matching rotating speed and transmitting torque.
As a further aspect of the present invention: and the second conveying pipeline is provided with a conveying automatic control valve, the gravity chute is provided with pneumatic gate valves, and the two pneumatic gate valves are in flexible connection to enable the hopper scale to be in a free state.
As a further aspect of the present invention: the upper end of the hopper scale is connected with a vacuum pipeline through a first dust remover; the vacuum pipeline is sequentially provided with a negative pressure control valve, a vacuum pressure sensor, a negative pressure emptying valve, a second dust remover and vacuum equipment; the hopper scale is characterized in that a vibration motor and an emptying pipeline are arranged on the side face of the hopper scale, an emptying valve is arranged on the emptying pipeline, a discharge pipeline is arranged at the lower end of the emptying pipeline, and an automatic discharge valve is arranged on the discharge pipeline.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses feeder and hopper scale have been set up, powder hopper scale through increasing spiral feed mechanism on negative pressure pneumatic conveying system's basis realizes that powder high accuracy automatic conveying weighs the integration, carry out the feed through adjusting the feeder and carry out the coarse weighing to the hopper scale in, the material of storage in negative pressure transportation process through the feeder hopper among the spiral feed mechanism simultaneously carries out accurate feed supplement measurement to required weight, and then realize the transport and the high accuracy of material simultaneously and weigh, production efficiency has effectively been improved, the equipment cost is reduced, the problem of the unable user of satisfying of current negative pressure pneumatic conveying weighing system to the high accuracy quick weighing demand has been solved.
Drawings
In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is the structure schematic diagram of the high-precision negative pressure pneumatic conveying weighing system of the utility model.
In the figure: 1-a storage bin; 2-a feeder; 3-a first delivery line; 4-a filter assembly; 5-a spiral feeding mechanism; 6-a second delivery line; 7-automatic delivery control valve; 8-motor reducer; 9-a sealed bearing assembly; 10-gravity pipeline; 11-a pneumatic gate valve; 12-hopper scale; 13-a vibration motor; 14-a first dust separator; 15-an evacuation valve; 16-a manifold; 17-vacuum line; 18-negative pressure control valve; 19-a vacuum pressure sensor; 20-a negative pressure evacuation valve; 21-a second dust remover; 22-vacuum equipment; 23-a pulse valve; 24-pulse air line; 25-manual valve; 26-air bag; 27-automatic discharge valve.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, in an embodiment of the present invention, a high-precision negative-pressure pneumatic conveying weighing system includes a bin 1 and a feeder 2 connected below the bin 1.
It is understood that the feeder 2 may be one of a spiral feeder, a rotary feeder, or a jet feeder, and is not limited, but is preferably a rotary feeder, and of course, the above are only some preferred, and the feeder 2 may also be other types such as a vibration feeder, and may be selected according to actual requirements, and is not limited herein, and of course, in order to clearly and specifically embody the present solution, the feeder 2 is mainly embodied in the form of a rotary feeder in the following embodiments, but is mainly for embodying the feasibility of the solution, and is not limited herein.
Further, in the embodiment of the present invention, the outlet of the feeder 2 is connected to the side of the upper end of the feeding hopper of the spiral feeding mechanism 5 through the first conveying pipeline 3, the spiral feeding mechanism 5 is a small-sized spiral feeder with a small feeding hopper, and is concrete, the outlet of the feeder 2 is connected to the side of the feeding hopper of the upper end of the spiral feeding mechanism 5 through the first conveying pipeline 3.
Further, in the embodiment of the utility model provides an in, 5 upper end feeder hoppers sides of spiral feed mechanism still are connected with collection pipe 16 through second conveying pipeline 6, spiral feed mechanism 5 adopts the packing sealed, guarantees steady operation under the negative pressure, be equipped with filter component 4 on the first conveying pipeline 3, be equipped with the hand valve that admits air on filter component 4, carry out material gas ratio through filter component 4 to getting into the conveying pipeline material and adjust and prevent simultaneously that the foreign matter from getting into conveying pipeline.
Further, in the embodiment of the utility model provides an in, 5 feeder hoppers upper ends of screw feed mechanism are equipped with the pulse fluidization that is used for material pulse fluidization and break the mechanism of encircleing, pulse fluidization is broken the mechanism of encircleing and is included being used for the pulse air pipeline 24 of being connected with 5 feeder hoppers upper ends of screw feed mechanism, be equipped with pulse valve 23 and manual valve 25 on the pulse air pipeline 24.
Specifically, by arranging the pulse fluidization arch breaking mechanism above the feeding hopper conveying pipe gap of the spiral feeding mechanism 5, wherein the pulse fluidization arch breaking mechanism comprises a small-specification pulse valve 23 and a manual valve 25, the fluidization air can be supplemented properly when the negative pressure conveying vacuum pressure is abnormal.
Further, in the embodiment of the utility model provides an in, the broken mechanism that encircles of pulse fluidization is connected with collection pipe 16 through gas package 26, the another way pulse gas that is used for carrying out cleaning to collection pipe 16 after a material is carried to the access simultaneously of gas package 26 side, connects through gas package 26 and can prevent that the material from remaining mixing in this collection pipe 16.
Further, in the embodiment of the present invention, a motor reducer 8 is fixedly installed on the screw feeding mechanism 5 through a sealing bearing assembly 9, and the motor reducer 8 plays a role in matching the rotating speed and the transmission torque.
Further, in the embodiment of the present invention, the discharge end of the spiral feeding mechanism 5 is connected to a gravity chute 10, and the gravity chute 10 is connected to a hopper scale 12 for weighing powder.
Referring to fig. 1, in another embodiment provided by the present invention, an automatic conveying control valve 7 is disposed on the second conveying pipeline 6, a pneumatic gate valve 11 is disposed on the gravity slide pipeline 10, the upper end of the hopper scale 12 is connected to a vacuum pipeline 17 through a first dust remover 14, and a negative pressure control valve 18, a vacuum pressure sensor 19, a negative pressure emptying valve 20, a second dust remover 21 and a vacuum device 22 are sequentially disposed on the vacuum pipeline 17.
It is understood that the vacuum device 22 may be a roots blower, or may be other types of vacuum pumps or vacuum jet pumps, which may be selected according to actual requirements, and is not limited herein, and in order to clearly and specifically implement the present solution, the vacuum device 22 is mainly implemented in the form of a roots blower in the following embodiments, but is mainly implemented for the implementability of the solution, and is not limited herein.
Further, in the embodiment of the utility model provides an in, be equipped with vibrating motor 13 and evacuation pipeline (not marked in the figure) on the hopper scale 12 side, be equipped with the exhaust-valve 15 on the evacuation pipeline, through the atmospheric pressure in the 15 balanced hopper scales 12 of exhaust-valve to confirm the true weight in the hopper scale 12, the lower extreme is equipped with discharge conduit (not marked in the figure), be equipped with automatic discharge valve 27 on the discharge conduit, can unload in the hopper scale 12 through automatic discharge valve 27, thereby make the material after weighing in the hopper scale 12 get into subsequent handling.
Further, in the embodiment of the utility model provides an, the system realizes the coarse weighing through negative pressure pneumatic transport, it is concrete, can be before reaching preset value, for example than the target value 3.0-4.0kg less, reduce the feed volume of material through automatically regulated feeder 2, then carry through the negative pressure and carry and tentatively clean the pipeline, stop the material feed when less than the target value 0.5-1.0kg, open negative pressure blowoff valve 20, close negative pressure control valve 18, carry automatic control valve 7 and stop the negative pressure system, open pulse valve 23 and clean collecting pipe 16, open blowoff valve 15 on hopper scale 12, confirm the true weight of material in hopper scale 12, open pneumatic push-pull valve 11, material through storing in the spiral feed mechanism 5 feeder hopper that is connected with swift current gravity pipeline 10 carries out accurate feed supplement measurement to required weight.
It can be understood that the feeding precision is improved by feeding materials through the spiral feeding mechanism 5, the spiral diameter is set to phi 80mm for weighing carbon black, the feeding precision can be stabilized within +/-30 g, and the requirements of most users on the precision are completely met.
Further, in the embodiment of the present invention, in order to ensure the metering accuracy, the ash removal action of the first dust remover 14 on the top of the hopper scale 12 is stopped during the supplementary metering process of the spiral feeding mechanism 5, and the first dust remover 14 may be a pulse dust remover.
Further, in the embodiment of the utility model provides an in, the system can be weighed by the single material, also can many materials accumulation weigh, and many materials accumulation weigh can realize through setting up many sets of negative pressure conveying system, a plurality of spiral feed mechanism 5, get into a diameter ratio conveyer pipe slightly bigger little manifold 16 before the material gets into hopper balance 12 earlier, during the tangential gets into hopper balance 12, rely on inertia to carry out the initial segregation with a large amount of dusts and air through the whirlwind principle, and then reduce the work load of the first dust remover 14 in top.
Further, in the embodiment of the present invention, the pipe diameters of the pipes (the first conveying pipe 3, the second conveying pipe 6, the gravity chute pipe 10, the manifold 16, the vacuum pipe 17, and the pulse air pipe 24) in the high-precision negative-pressure pneumatic conveying weighing system and the design of the vacuum device 22 and the feeder 2 should be strictly calculated according to the conveying capacity, for carbon black conveying, the material-to-gas ratio should be controlled at 2-3kg material/1 kg gas, the apparent gas velocity at the conveying inlet should be controlled at 15m/s, the gas velocity at the outlet should be controlled within 35m/s according to the length of the conveying pipe and the number of bends, and if the conveying distance exceeds 50m, the reducing design is proposed; for materials with larger adhesion, such as N660 carbon black, N772 carbon black, N774 carbon black and N990 carbon black, the conveying pipeline is recommended to adopt a steel wire reinforced thin-wall plastic pipe with vacuum pressure resistance to convey, and the pipeline is prevented from being adhered by shaking caused by pressure fluctuation in the conveying process.
Further, in the embodiment of the utility model provides an in, two pneumatic push-pull valves 11 can be installed to 5 discharge ends of screw feed mechanism, and then increase the reliability of system, prevent to cause weighing error because of the malleation appears in vibration or screw feed mechanism 5. The two valves are connected through a flexible connecting pipe. The pneumatic gate valve close to the scale body is used for sealing the scale body, so that the flexible connecting pipe is prevented from being damaged by vacuum.
Furthermore, in the embodiment of the present invention, the gap between the spiral feeding mechanism 5 and the first conveying pipeline 3 and the gap between the spiral feeding mechanism and the second conveying pipeline 6 are designed to be adjustable, and the gap is manually adjusted according to the characteristics of different materials, so that the material in the negative pressure conveying pipeline may not enter the inside of the feeding hopper of the spiral feeding mechanism 5 to supplement the material required for weighing if the gap is too small; too large a gap causes an excessive decrease in the conveying speed and even a blockage in the hopper of the screw feeder 5, resulting in an abnormal conveyance.
Further, in the embodiment of the utility model provides an in order to guarantee that hopper scale 12 does not receive external force to influence, between pneumatic gate valve 11, blowoff valve 15, manifold 16 and vacuum line 17 all adopt the flexible coupling, guarantee that hopper scale 12 does not receive external force to influence.
Further, in the embodiment of the present invention, in order to reduce the cost, the feeder 2 and the spiral feeding mechanism 5 may be controlled by a frequency converter because they do not work at the same time.
Further, in the embodiment of the present invention, in order to prevent the dust from entering the vacuum device 22 due to the filter bag being broken in the first dust collector 14, the second dust collector 21 needs to be disposed, and the two-stage dust collectors of the first dust collector 14 and the second dust collector 21 are both provided with a differential pressure alarm device.
When the pneumatic pulse fluidized bed is used, after the air inlet hand valve and the filter assembly 4 are adjusted, the maximum gap (default set distance is 30mm) between the first conveying pipeline 3 and the second conveying pipeline 6 is manually adjusted, the vacuum equipment 22 is started, the negative pressure emptying valve 20, the emptying valve 15 and the pneumatic gate valve 11 are closed, the negative pressure control valve 18, the conveying automatic control valve 7 and the feeder 2 are opened, materials (shown in the figure) can partially fall into a feed hopper of the spiral feeding mechanism 5 due to the gap between the first conveying pipeline 3 and the second conveying pipeline 6, the pulse air pipeline 24 on the feed hopper of the spiral feeding mechanism 5 is opened by pulses when conveying vacuum pressure is abnormal, and the materials in the gap between the first conveying pipeline 3 and the second conveying pipeline 6 are subjected to pulse fluidization to prevent blockage; meanwhile, conveying materials enter the hopper scale 12 through the second conveying pipeline 6 and the automatic conveying control valve 7; when a preset weighing value A is reached (for example, the value is 3.0-4.0kg less than a target value), reducing the rotating speed of the feeder 2 by frequency conversion, carrying out slow feeding and conveying, when a preset weighing value B is reached (for example, the value is 0.5-1.0kg less than the target value), stopping the feeder 2, opening the negative pressure emptying valve 20, closing the conveying automatic control valve 7 and the negative pressure control valve 18, opening the emptying valve 15 and the pneumatic gate valve 11, and starting the motor reducer 8 of the spiral feeding mechanism 5 to carry out fast and slow feeding so as to ensure the weighing precision; when the weighing precision is reached, the spiral feeding mechanism 5 stops working, and further the weighing of a material is completed.
When the weight in the hopper scale 12 still does not reach the preset value B after the emptying valve 15 is opened, the processing needs to be carried out through proper negative pressure slow feeding and conveying delay; if the preset value B cannot be reached through time delay, the feeder 2 needs to be clicked to feed the materials, and after one material is conveyed, the pulse valve 23 on the collecting pipe 16 needs to be opened to clean the collecting pipe 16, so that different materials in the collecting pipe 16 are prevented from being mixed.
When the pressure value detected by the vacuum pressure sensor 19 is higher than the vacuum alarm pressure P1 in the negative pressure conveying process and the time exceeds 1.5-2.0s, the feeder 2 rotates slowly; when the alarm pressure P2 appears (slightly less than or equal to the vacuum pressure of the vacuum pump) and the duration exceeds 2s, the pipeline is considered to be blocked, the feeder 2 is immediately stopped, meanwhile, the sound and light alarm is carried out, the system stops working, and the parts which are not involved in the system are the same as or can be realized by adopting the prior art.
The utility model has the advantages that: the utility model discloses feeder 2 and hopper scale 12 have been set up, powder hopper scale 12 through increasing spiral feed mechanism 5 on negative pressure pneumatic conveying system's basis realizes that powder high accuracy automatic conveying weighs the integration, carry out the feed through adjusting feeder 2 and carry out the coarse weighing to hopper scale 12 in, the material of storage carries out accurate feed supplement measurement to required weight in the negative pressure transportation process through feeder hopper in spiral feed mechanism 5 simultaneously, and then realize the transport and the high accuracy of material simultaneously and weigh, production efficiency has effectively been improved, the equipment cost is reduced, the problem of the unable user of satisfying of current negative pressure pneumatic conveying weighing system to the high accuracy demand of weighing fast has been solved.
The electric appliances presented in the article can be electrically connected with an external master controller and 220/380V mains supply, and the master controller can be a conventional known device which is controlled by a computer and the like.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete joining mode of each part all can adopt conventional means such as ripe bolt, rivet, welding among the prior art, does not detailed here again.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A high-precision negative-pressure pneumatic conveying weighing system comprises a storage bin (1) and a feeder (2) connected below the storage bin (1), and is characterized in that an outlet of the feeder (2) is connected with the side surface of a feed hopper at the upper end of a spiral feeding mechanism (5) through a first conveying pipeline (3), and the side surface of the feed hopper at the upper end of the spiral feeding mechanism (5) is also connected with a collecting pipe (16) through a second conveying pipeline (6);
the upper end of a feed hopper of the spiral feeding mechanism (5) is provided with a pulse fluidization arch breaking mechanism for pulse fluidization of materials, the pulse fluidization arch breaking mechanism is connected with an air bag (26), the air bag (26) is simultaneously connected with a collecting pipe (16), the discharge end of the spiral feeding mechanism (5) is connected with a gravity sliding pipeline (10), and the gravity sliding pipeline (10) is connected with a hopper scale (12) for weighing powder.
2. The high-precision negative-pressure pneumatic conveying weighing system according to claim 1, wherein the first conveying pipeline (3) is provided with a filter assembly (4), and the filter assembly (4) is provided with an air inlet hand valve.
3. The high-precision negative-pressure pneumatic conveying weighing system according to claim 1, wherein the pulse fluidization arch breaking mechanism comprises a pulse air pipeline (24) connected with the upper end of a feed hopper of the spiral feeding mechanism (5), and a pulse valve (23) and a manual valve (25) are arranged on the pulse air pipeline (24).
4. The high-precision negative-pressure pneumatic conveying weighing system according to claim 3, wherein the spiral feeding mechanism (5) is fixedly provided with a motor reducer (8) through a sealing bearing assembly (9).
5. The high-precision negative-pressure pneumatic conveying weighing system according to claim 4, wherein the second conveying pipeline (6) is provided with an automatic conveying control valve (7), and the gravity slide pipeline (10) is provided with a pneumatic gate valve (11).
6. The high-precision negative-pressure pneumatic conveying weighing system according to any one of claims 1 to 5, wherein the upper end of the hopper scale (12) is connected with a vacuum pipeline (17) through a first dust remover (14);
the vacuum pipeline (17) is sequentially provided with a negative pressure control valve (18), a vacuum pressure sensor (19), a negative pressure emptying valve (20), a second dust remover (21) and a vacuum device (22);
the hopper scale is characterized in that a vibration motor (13) and an emptying pipeline are arranged on the side face of the hopper scale (12), an emptying valve (15) is arranged on the emptying pipeline, a discharge pipeline is arranged at the lower end of the emptying pipeline, and an automatic discharge valve (27) is arranged on the discharge pipeline.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019103734565 | 2019-05-07 | ||
| CN201910373456 | 2019-05-07 |
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| CN209956983U true CN209956983U (en) | 2020-01-17 |
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| CN201910482319.5A Withdrawn CN110104452A (en) | 2019-05-07 | 2019-06-04 | High-precision negative-pressure pneumatic conveying and measuring system |
| CN201920838774.XU Expired - Fee Related CN209956983U (en) | 2019-05-07 | 2019-06-04 | High-precision negative pressure pneumatic conveying weighing system |
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| CN201910482319.5A Withdrawn CN110104452A (en) | 2019-05-07 | 2019-06-04 | High-precision negative-pressure pneumatic conveying and measuring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111701486A (en) * | 2020-07-24 | 2020-09-25 | 上海彩生色料化学股份有限公司 | Ultrafine powder anti-blocking conveying system and application thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295246A (en) * | 2021-07-27 | 2021-08-24 | 深圳市同富信息技术有限公司 | Powder ash material weighing device |
-
2019
- 2019-06-04 CN CN201910482319.5A patent/CN110104452A/en not_active Withdrawn
- 2019-06-04 CN CN201920838774.XU patent/CN209956983U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111701486A (en) * | 2020-07-24 | 2020-09-25 | 上海彩生色料化学股份有限公司 | Ultrafine powder anti-blocking conveying system and application thereof |
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| Publication number | Publication date |
|---|---|
| CN110104452A (en) | 2019-08-09 |
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