CN112249713A - Positive-pressure anti-blocking pipe and low-abrasion pneumatic conveying device for high-hardness materials and working method - Google Patents

Abstract

The invention relates to a high-hardness material positive-pressure anti-blocking and low-abrasion pneumatic conveying device and a working method thereof. The working method of the positive-pressure anti-blocking and low-abrasion pneumatic conveying device for the high-hardness materials is specially designed for the high-hardness materials, the high-hardness materials are subjected to operations such as screening, calcining and mixing in a fully closed state, continuous discharging is guaranteed, discharging accuracy is high, unqualified products can be automatically recycled, and therefore the production requirement of special materials is met.

Description

Positive-pressure anti-blocking pipe and low-abrasion pneumatic conveying device for high-hardness materials and working method

The technical field is as follows:

the invention relates to the technical field of material conveying systems, in particular to a positive-pressure anti-blocking low-abrasion pneumatic conveying device for high-hardness materials and a working method.

Background art:

in the prior art, some high-hardness materials are different in specific gravity and material diameter, so that the pipeline is easily blocked when the high-hardness materials are stored, weighed and conveyed, the blockage needs to be cleared regularly, and the production efficiency is influenced. The current material field of carrying does not adopt totally enclosed, and all equipment adopt the working method of series connection combination, and the material is transmitted for the majority for half open-type, manual type or partial traditional mechanical type, causes that the dust is big, the wearing and tearing are big, intensity of labour is big and can't full line automation, therefore inefficiency relatively. If a fully-closed, low-abrasion and fully-combined linkage automatic pipeline closed pneumatic conveying system is adopted, it becomes more important to link all the devices.

The invention content is as follows:

the invention aims to provide a high-hardness material positive-pressure anti-blocking pipe and low-abrasion pneumatic conveying device capable of continuously discharging, accurately weighing and not easily blocking and a working method aiming at the defects of the prior art.

The invention is realized by the following technical scheme: a high-hardness material positive-pressure anti-blocking and low-abrasion pneumatic conveying device comprises a ton bag opening station, a sending tank, a cache bin, a screening machine, a calcining furnace, a cache hopper, a mixing acceleration chamber, a transfer bin, a coarse material bin, a fine material bin, a mixing machine and a packaging machine, wherein the ton bag opening station is connected with the sending tank, the sending tank is connected with the cache bin through a positive-pressure pipeline, the cache bin is connected with the screening machine through a rotary ventilation valve, the screening machine is connected with the calcining furnace, the calcining furnace is connected with the cache hopper, the cache hopper is connected with the mixing acceleration chamber through a rotary air locking valve, the mixing acceleration chamber is connected with the transfer bin, the transfer bin is respectively connected with the coarse material bin and the fine material bin through a screw conveyor and a rotary air locking valve, the coarse material bin and the fine material bin are respectively connected with the mixing machine through a screw conveyor and a rotary air locking, the mixing machine is connected with a packaging machine.

In order to facilitate the supply of pressure to the positive pressure conduit, the positive pressure conduit is connected to an air compression device.

In order to prevent the abrasion of high-hardness materials to equipment, the mode of lining ceramics is adopted at the friction part of the pipe fitting, so that the equipment is prevented from being worn prematurely; meanwhile, the whole-course conveying of the materials is carried out in a low-speed mode, and the surfaces of related equipment are prevented from being abraded by the materials, so that the materials become thin and the equipment is abraded.

In order to avoid the blockage of the positive pressure pipeline, a plurality of automatic air inlet valves and pressure detectors are uniformly distributed on the positive pressure pipeline.

In order to collect dust, a bin top dust remover is arranged on the cache storage bin.

In order to filter the calcined high-hardness material, a separation and filtration integrated machine is arranged on the transfer bin.

In order to carry out the thickness screening to the high rigidity material, the follow-up mixture of being convenient for to the particle diameter of accurate control certified products, the buffer memory is fought including coarse fodder buffer memory fill and fine material buffer memory fill, the transfer feed bin includes coarse fodder transfer feed bin and fine material transfer feed bin, coarse fodder buffer memory fill is connected with coarse fodder transfer feed bin, fine material buffer memory fill is connected with fine material transfer feed bin.

In order to recover and reuse unqualified products, the invention also comprises an unqualified product recovery bin, an unqualified product bin and an unqualified product transfer bin, wherein the unqualified product recovery bin is respectively connected with the mixing machine and the unqualified product transfer bin, the unqualified product transfer bin is connected with the unqualified product bin, and the unqualified product bin is connected with the mixing machine through a screw conveyor and a rotary air locking valve.

The invention also provides a working method of the positive-pressure anti-blocking and low-abrasion pneumatic conveying device for the high-hardness material, which comprises the following steps of:

(1) high-hardness materials in the ton bag opening station are sent into a sending tank after bag opening dust is collected;

(2) sending the high-hardness material in the sending tank into a cache bin for caching through a positive pressure pipeline;

(3) screening the high-hardness materials in the cache bin by a screening machine, and then feeding the materials into a calcining furnace for calcining;

(4) the calcined high-hardness materials are divided into coarse materials and fine materials which are respectively sent into a buffer hopper for buffer storage, and the coarse materials and the fine materials in the buffer hopper are respectively sent into a coarse material bin and a fine material bin through a transfer bin;

(5) weighing the high-hardness materials in the coarse material bin, the fine material bin and the unqualified product bin, and then feeding the weighed high-hardness materials into a mixer for mixing;

(6) and (4) sending the mixed qualified products into a packaging machine, and sending the unqualified products back to a transit bunker for recycling through an unqualified product recycling bin.

The invention has the beneficial effects that: the working method of the positive-pressure anti-blocking and low-abrasion pneumatic conveying device for the high-hardness materials is specially designed for the high-hardness materials, the high-hardness materials are subjected to operations such as screening, calcining and mixing in a fully closed state, continuous discharging is guaranteed, discharging accuracy is high, unqualified products can be automatically recycled, and therefore the production requirement of special materials is met.

Description of the drawings:

fig. 1 is a schematic structural view of the positive pressure anti-blocking pipe and low abrasion pneumatic conveying device for high-hardness materials.

The specific implementation mode is as follows:

the following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention more readily understood by those skilled in the art, and thus will more clearly and distinctly define the scope of the invention.

As shown in fig. 1, the high-hardness material positive-pressure anti-blocking and low-abrasion pneumatic conveying device comprises a ton bag opening station 1, a sending tank 2, a cache bin 7, a screening machine 8, a calcining furnace 9, a cache hopper 10, a mixing acceleration chamber 20, a transfer bin 11, a coarse material bin 13, a fine material bin 14, a defective product bin 15, a defective product recovery bin 21, a mixing machine 18 and a packing machine 19, wherein the ton bag opening station 1 is connected with the sending tank 2, the sending tank 2 is connected with the cache bin 7 through a positive-pressure pipeline 4, the positive-pressure pipeline 4 is connected with an air compression device 3, a plurality of automatic air inlet valves 5 and pressure detectors 6 are uniformly distributed on the positive-pressure pipeline 4, the cache bin 7 is 4 in sets and is respectively connected with the screening machine 8 through a rotary air exchange valve, a bin top dust remover is arranged on the cache bin 7, each screening machine 8 is respectively connected with a calcining furnace 9, and the calcining furnace 9, the buffer hopper 10 comprises a coarse material buffer hopper and a fine material buffer hopper, the buffer hopper 10 is connected with a mixing acceleration chamber 20 through a rotary air lock valve, the mixing acceleration chamber 20 is connected with a transfer bin 11, a separation and filtration integrated machine 12 is arranged on the transfer bin 11, the transfer bin 11 comprises a coarse material transfer bin, a fine material transfer bin and an unqualified product transfer bin, the coarse material buffer hopper is connected with the coarse material transfer bin, the fine material buffer hopper is connected with the fine material transfer bin, the transfer bins are respectively connected with the coarse material bin 13 and the fine material bin 14 through a screw conveyor and a rotary air lock valve, the coarse material bin 13 and the fine material bin 14 are respectively connected with a mixer 18 through a screw conveyor 16 and a rotary air lock valve 17, the mixer 18 is connected with a packing machine 19, the unqualified product recovery bin 21 is respectively connected with the mixer 18 and the unqualified product transfer bin, the unqualified product transfer bin is connected with the unqualified product bin 15, the unqualified product bin 15 is connected with a mixer 18 through a screw conveyer 16 and a rotary air-lock valve 17.

The working principle of the invention is as follows:

during processing, high-hardness materials in the ton bag opening station 1 are conveyed into the sending tank 2 after bag opening and unpacking, are conveyed to the 4 cache bins 7 through the sending tank 2 in a positive pressure dense-phase mode, generated dust is collected by a bin top dust remover, and is conveyed to the corresponding cache bins 7 through switching of the three-way reversing valve. Sending jar 2 has automatic mediation control system, the pressurization of admitting air of A department, the fluidization of admitting air of B department, the C department is admitted air and is swept, the pressurization of admitting air of D department malleation pipeline 4, malleation pipeline 4 sets up a pressure measurement appearance 6 every 24 meters, check point material when pressure measurement appearance 6 can't be detected and jar internal pressure be greater than more than 0.2KG, then can judge that the putty has taken place, B department begins to admit air this moment, if admit air after the fluidization ineffective then C department admit air and sweep, it is not effective yet, then D1 department pressurizes, no effect, D1 department closes, D2 opens, analogize in proper order, dredge and resume normal transport until Dn department. The high-hardness materials in the buffer storage bin 7 are screened by a screening machine 8 and then are sent into a calcining furnace 9 for calcining, coarse materials coming out of a cyclone after calcining and fine materials coming out of a dust remover are respectively buffered by a buffer storage hopper 10 and are conveyed to the coarse material bin and the fine material bin through negative pressure, the high-hardness materials in the coarse material bin, the fine material bin and an unqualified product bin are weighed and then sent into a mixing machine 18 for mixing, the qualified products after mixing are sent into a packing machine 19, and the unqualified products are sent back to a transfer bin through an unqualified product recovery bin 21 for recycling.

In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "disposed," "provided," and the like 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. The utility model provides a stifled pipe, low wearing and tearing pneumatic conveyor are prevented to high rigidity material malleation which characterized in that: the system comprises a ton bag opening station, a sending tank, a buffer storage bin, a screening machine, a calcining furnace, a buffer hopper, a mixing acceleration chamber, a transfer bin, a coarse material bin, a fine material bin, a mixing machine and a packaging machine, wherein the ton bag opening station is connected with the sending tank, the sending tank is connected with the buffer storage bin through a positive pressure pipeline, the buffer storage bin is connected with the screening machine through a rotary ventilation valve, the screening machine is connected with the calcining furnace, the calcining furnace is connected with the buffer hopper, the buffer storage bin is connected with the mixing acceleration chamber through a rotary air locking valve, the mixing acceleration chamber is connected with the transfer bin, the transfer bin is connected with the coarse material bin and the fine material bin through a spiral conveyor and a rotary air locking valve respectively, the coarse material bin and the fine material bin are connected with the mixing machine through a spiral conveyor and a rotary air locking valve respectively, and.

2. The positive-pressure anti-blocking low-wear pneumatic conveying device for the high-hardness materials according to claim 1, which is characterized in that: the positive pressure pipeline is connected with an air compression device.

3. The positive-pressure anti-blocking low-wear pneumatic conveying device for the high-hardness materials according to claim 1, which is characterized in that: a plurality of automatic air inlet valves and pressure detectors are uniformly distributed on the positive pressure pipeline.

4. The positive-pressure anti-blocking low-wear pneumatic conveying device for the high-hardness materials according to claim 1, which is characterized in that: and a bin top dust remover is arranged on the cache bin.

5. The positive-pressure anti-blocking low-wear pneumatic conveying device for the high-hardness materials according to claim 1, which is characterized in that: and the transfer material bin is provided with a separation and filtration integrated machine.

6. The positive-pressure anti-blocking low-wear pneumatic conveying device for the high-hardness materials according to claim 1, which is characterized in that: the buffer memory is fought including coarse fodder buffer memory fill and fine material buffer memory fill, the transfer feed bin includes coarse fodder transfer feed bin and fine material transfer feed bin, coarse fodder buffer memory is fought and is connected with coarse fodder transfer feed bin, fine material buffer memory is fought and is connected with fine material transfer feed bin.

7. The positive-pressure anti-blocking low-wear pneumatic conveying device for the high-hardness materials according to claim 6, characterized in that: still include nonconforming article recovery storehouse, nonconforming article feed bin, nonconforming article transfer feed bin, nonconforming article recovery storehouse is connected with mixing machine, nonconforming article transfer feed bin respectively, the nonconforming article transfer feed bin is connected with the nonconforming article feed bin, the nonconforming article feed bin passes through screw conveyer, gyration airlock valve and is connected with mixing the machine.

8. The working method of the high-hardness material positive-pressure anti-blocking low-abrasion pneumatic conveying device according to any one of claims 1 to 7, characterized by comprising the following steps of:

(1) opening the bags of the high-hardness materials in the ton bag opening station and then sending the high-hardness materials into a sending tank;

(2) sending the high-hardness material in the sending tank into a cache bin for caching through a positive pressure pipeline;

(3) screening the high-hardness materials in the cache bin by a screening machine, and then feeding the materials into a calcining furnace for calcining;

(4) the calcined high-hardness materials are divided into coarse materials and fine materials which are respectively sent into a buffer hopper for buffer storage, and the coarse materials and the fine materials in the buffer hopper are respectively sent into a coarse material bin and a fine material bin through a transfer bin;

(5) weighing the high-hardness materials in the coarse material bin, the fine material bin and the unqualified product bin, and then feeding the weighed high-hardness materials into a mixer for mixing;

(6) and (4) sending the mixed qualified products into a packaging machine, and sending the unqualified products back to a transit bunker for recycling through an unqualified product recycling bin.

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