CN112090334B

CN112090334B - High-efficient fluorite powder homogenization device

Info

Publication number: CN112090334B
Application number: CN202010848108.1A
Authority: CN
Inventors: 黄明新; 吴仕显; 黄宗发; 邱秋生; 黄天梁; 雷游生; 林庆鑫
Original assignee: Fujian Longfu New Material Co ltd
Current assignee: Fujian Longfu New Material Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2023-07-04
Anticipated expiration: 2040-08-21
Also published as: CN112090334A

Abstract

The utility model relates to a high-efficiency fluorite powder homogenizing device, which comprises a fluorite powder lifting machine and a homogenizing warehouse which are communicated with each other; the fluorite powder lifter is communicated with a material port at the top of the homogenization warehouse through a side wall connection input device so as to input different fluorite powder; a discharge hole is formed in the center of the conical hopper surface at the bottom of the homogenization warehouse, and a spiral discharge system is arranged on the discharge hole so as to discharge fluorite powder which is uniformly mixed; the inner side wall of the cone bucket surface at the bottom of the homogenization warehouse is provided with inflatable boxes in a distributed manner; the air charging box is communicated with a Roots blower arranged on the outer side of the homogenization warehouse; the top of the homogenizing warehouse is provided with a dust remover and a rotation-resistant level gauge; the Roots blower and the rotation-resistant level gauge are connected through an automatic control interlocking system for automatic control.

Description

High-efficient fluorite powder homogenization device

Technical Field

The utility model relates to a novel efficient fluorite powder homogenizing device which is applied to uniformly mixing fluorite powder with different powder qualities, and belongs to the technical field of large mechanical devices.

Background

At present, in the production process of hydrogen fluoride, a fluorite powder-sulfuric acid method is mainly used, the method has higher requirements on the chemical component content index of fluorite powder, and key quality control means that: the content of calcium fluoride is more than or equal to 97%, the content of silicon dioxide is less than or equal to 1.5%, the content of calcium carbonate is less than or equal to 1%, and generally the purchased fluorite powder is water-containing wet powder, and the fluorite powder is required to be dried firstly during production and use, and is in a powder form after being treated. In the prior art, due to the lack of fluorite resources, a plurality of suppliers and uneven product quality, fluorite powder of each supplier needs to be dried in batches and then piled up in layers in a powder bin.

In the fluorite powder-sulfuric acid method, the proportion of the acid powder is an important link of complete reaction, and the uniform metering and stable conveying of the fluorite powder are key to the stable proportion of the acid powder. The quality of the fluorite powder is uneven due to the factors of a plurality of suppliers, different production places, different production methods, batch drying, layering stacking and the like, the quality difference of the fluorite powder can influence the stability and continuity of the hydrogen fluoride production process, and particularly, the durability and stability of the production process can be seriously influenced if the key indexes such as the indexes of silicon dioxide and calcium carbonate are greatly different. Therefore, in the hydrogen fluoride production, there is a need for a powder-shaped fluorite powder with different production areas and different qualities, which can be uniformly mixed by special equipment, and which can better avoid interruption of the hydrogen fluoride production caused by the difference of the fluorite powder during use, thereby reducing the production efficiency. Meanwhile, in the production of hydrogen fluoride, because different fluorite powders of different suppliers are replaced for a plurality of times, the charging proportion is required to be frequently changed and controlled, the stable production is greatly influenced, the corrosion and wall pasting of a reaction converter are easily caused, even short-time violent reaction is generated, the negative pressure is lost, and the dissipation of hydrogen fluoride at a furnace end causes environmental pollution.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a novel efficient fluorite powder homogenizing device, which is suitable for a fluorite powder mixing homogenizing device in a production process for producing anhydrous hydrogen fluoride by taking fluorite powder and sulfuric acid as raw materials, wherein different fluorite powders are dried and uniformly put into a homogenizing warehouse for storage, and the fluorite powders in a tank are rolled and fully mixed by utilizing air pressure generated by a high-pressure Roots blower, so that the quality of the fluorite powders can be kept consistent well, and the production abnormality caused by the difference of quality of the fluorite powders is solved.

The technical scheme of the utility model is as follows:

a novel efficient fluorite powder homogenizing device comprises a fluorite powder lifting machine and a homogenizing warehouse which are communicated with each other; the fluorite powder lifter is communicated with a material port at the top of the homogenization warehouse through an input device connected with the side wall so as to input different fluorite powder; a discharge hole is formed in the center of the conical hopper surface at the bottom of the homogenization warehouse, and a spiral discharge system is arranged on the discharge hole so as to discharge fluorite powder which is uniformly mixed; the inner side wall of the cone bucket surface at the bottom of the homogenization warehouse is provided with inflatable boxes in a distributed manner; the air charging box is communicated with a Roots blower arranged on the outer side of the homogenization warehouse; the top of the homogenizing warehouse is provided with a dust remover and a rotation-resistant level gauge; the Roots blower and the rotation-resistant level gauge are connected through an automatic control interlocking system for automatic control.

Further, two homogenization warehouses are arranged, and two sets of input devices are connected to the side wall of the fluorite powder lifter and respectively input fluorite powder to the two homogenization warehouses.

Further, the input device comprises an air delivery chute and a pneumatic rotary valve; the fluorite powder lifting machine is communicated with a fluorite powder inlet at the top of the homogenization warehouse through an air conveying chute; a pneumatic rotary valve is arranged on a fluorite powder outlet of the fluorite powder lifting machine.

Further, the spiral discharging system comprises a material bearing box, a discharging device and a discharging screw conveyor; the material bearing box is fixed on a discharge hole at the bottom of the homogenization warehouse so as to receive fluorite powder discharged from the homogenization warehouse; the inlet of the discharging device is communicated with the outlet of the material bearing box, the inlet of the discharging screw conveyor is communicated with the outlet of the discharging device, and the discharging screw conveyor is used for conveying fluorite powder to a workshop bin in a screw manner for storage.

Further, an injection pipe is connected to the side wall of the material bearing box after the side wall of the material bearing box is opened, and air is blown towards the inside of the material bearing box to prevent blockage.

Further, the whole inflation box is provided with a plurality of inflation layers in a circular ring shape from outside to inside, a gas distribution pipe is arranged between two adjacent inflation layers, each inflation layer comprises a plurality of inflation rings arranged at intervals along the circumferential direction, each inflation ring is provided with an inflation joint, and each inflation joint is connected with an adjacent gas distribution pipe; the gas distribution pipe is connected with a ventilation pipeline of the Roots blower arranged outside; the surface of the inflatable ring is provided with a plurality of air holes.

Further, the center of the air charging box is also provided with a rectangular air charging layer formed by encircling an air charging ring, the bottom of the air charging ring is provided with an air charging joint, and the air charging joint is externally connected with an air charging pipeline of the Roots blower; an outlet is reserved in the air charging layer and is overlapped with a discharge hole of the conical bucket surface at the bottom of the homogenization silo for discharging.

Further, the dust remover adopts a cloth bag for dust removal, the dust remover comprises a plurality of cloth bag cages which are arranged at the top of the homogenization warehouse in a plum blossom shape, and a dust remover pulse valve is arranged at the top of each cloth bag cage.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model provides a novel efficient fluorite powder homogenizing device, which is characterized in that fluorite powder of different dried piled materials is uniformly put into a homogenizing warehouse for storage through a fluorite powder lifting machine, air pressure generated by a high-pressure Roots blower is utilized, air pressure introduced into the homogenizing warehouse is controlled through an air charging box, fluorite powder in the homogenizing warehouse is enabled to be rolled and fully mixed, the quality of the fluorite powder can be well kept consistent, and the fluorite powder enters a production system after being fully mixed, so that the regulation and control of reaction process parameters in the production process are greatly facilitated.

2. The utility model arranges the dust remover at the top of the fluorite powder homogenizing warehouse, the dust remover adopts a simple cloth bag as dust removing and filtering, the cloth bag cage is arranged at the top of the homogenizing warehouse in a plum blossom shape, and the smoke window effect is fully utilized to achieve the ventilation effect, thus forming a simple, economical and practical dust remover, thereby replacing the pulse dust remover with complex structure and high cost, arranging the dust remover pulse valve at the top of the cloth bag cage, spraying compressed air into the cloth bag cage at regular time, shaking the fluorite dust absorbed by the compressed air into the homogenizing warehouse, and ensuring the stable operation of the dust remover. In addition, for the material level condition in the real-time supervision homogenization storehouse of being convenient for, set up and hinder and revolve the limitation that the formula charge level indicator replaced traditional charge level indicator only can monitor the material upper and lower limit for the data of measuring is more accurate, hinders simultaneously and revolve the formula charge level indicator anti-interference condition better, and the environmental adaptation ability is better, therefore more durable. In order to reduce the labor intensity of operators, fluorite powder is input into the homogenization warehouse and output from the homogenization warehouse by adopting semi-automatic screw transportation equipment in a closed state, so that the dust is effectively controlled to drift and pollute the working environment.

Drawings

FIG. 1 is a schematic structural diagram of embodiment 1 of the present utility model;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is a schematic structural diagram of embodiment 2 of the present utility model;

FIG. 4 is a schematic view of the structure of the inflator of the present utility model;

FIG. 5 is an enlarged schematic view at B in FIG. 4;

fig. 6 is a schematic structural view of a dust collector according to the present utility model.

The reference numerals in the drawings are as follows:

1. a fluorite powder lifter; 2. a homogenization silo; 21. a cone bucket surface; 22. a discharge port; 3. an input device; 31. an air delivery chute; 32. a pneumatic rotary valve; 4. a spiral discharging system; 41. a material bearing box; 42. a discharging device; 43. a discharge screw conveyor; 44. a blowing pipe; 5. an air charging box; 51. an inflatable layer; 511. a first inflatable layer; 512. a second inflatable layer; 513. a third inflatable layer; 514. a fourth inflatable layer; 52. an air distribution pipe; 53. an air-filling ring; 54. an inflation joint; 55. air holes; 56. an outlet; 6. roots blower; 61. a vent line; 7. a dust remover; 71. a cloth bag cage; 72. a dust remover pulse valve; 8. a rotation-resistant level gauge.

Detailed Description

The utility model will now be described in detail with reference to the drawings and to specific embodiments.

Example 1

Referring to fig. 1 and 2, a novel efficient fluorite powder homogenizing device comprises a fluorite powder lifter 1 and a homogenizing warehouse 2 which are communicated with each other; the fluorite powder lifter 1 is communicated with a material port at the top of the homogenization warehouse 2 through an input device 3 connected with the side wall so as to input different fluorite powder; the input device 3 comprises an air conveying chute 31 and a pneumatic rotary valve 32, and the fluorite powder lifter 1 is communicated with a fluorite powder inlet at the top of the homogenization warehouse 2 through the air conveying chute 31; a pneumatic rotary valve 32 is arranged on a fluorite powder outlet of the fluorite powder lifter 1, and the rotary valve 32 and the air conveying chute 31 are started to control the powder inlet amount of the homogenization warehouse 2; a discharge hole 22 is formed in the center of the conical hopper surface 21 at the bottom of the homogenization warehouse 2, and a spiral discharge system 4 is arranged on the discharge hole 22 to discharge fluorite powder which is uniformly mixed; the spiral discharging system 4 comprises a material bearing box 41, a discharging device 42 and a discharging screw conveyor 43; the material bearing box 41 is fixed on a material outlet 22 at the bottom of the homogenization silo 1 to receive fluorite powder discharged from the homogenization silo 2; the inlet of the discharging device 42 is communicated with the outlet of the material bearing box 41, the inlet of the discharging screw conveyor 43 is communicated with the outlet of the discharging device 42, and the discharging screw conveyor 43 is used for conveying fluorite powder to a workshop bin for storage in a screw manner; the side wall of the material bearing box 41 is opened and then is connected with a blowing pipe 44, and blowing air towards the inside of the material bearing box 41 is carried out to prevent the material bearing box 41 from being blocked during discharging; the inner side wall of the cone bucket surface 21 at the bottom of the homogenization warehouse 2 is provided with an inflation box 5 in a distributed manner; the air charging box 5 is communicated with a Roots blower 6 arranged outside the homogenization warehouse 2; high-pressure air is generated by the Roots blower 6, and the fluorite powder in the homogenization warehouse 2 is rolled and mixed by the air boxes 5 distributed on the cone hopper surface 21 of the homogenization warehouse 2, so that the purpose of uniformly mixing the fluorite powder is achieved; the top of the homogenization silo 2 is provided with a dust remover 7 and a rotation-resistant level gauge 8; the Roots blower 6 is connected with the rotation-resistant material level indicator 8 through an automatic control interlocking system to perform automatic control, and the Roots blower 6 immediately stops blowing after the fluorite powder amount in the homogenization warehouse 2 reaches the set height of the rotation-resistant material level indicator 8 under the control of the automatic interlocking system.

Referring to fig. 4 and 5, the whole of the air box 5 is provided with a plurality of air-filled layers 51 in a circular ring shape from outside to inside, a first air-filled layer 511, a second air-filled layer 512 and a third air-filled layer 513 are sequentially arranged, an air distribution pipe 52 is arranged between two adjacent air-filled layers 51, an air distribution pipe 52 is arranged between the first air-filled layer 511 and the second air-filled layer 512, an air distribution pipe 52 is arranged between the second air-filled layer 512 and the third air-filled layer 513, the air-filled layers 51 comprise a plurality of air-filled rings 53 which are arranged at intervals along the circumferential direction, an air-filled joint 54 is arranged on each air-filled ring 53, the air-filled joints 54 are connected with an adjacent air distribution pipe 52, and the air-filled joints 514 on the air-filled rings 53 of the second air-filled layer 512 and the third air-filled layer 513 are connected with the same air distribution pipe 52; the gas distribution pipe 52 is connected with a gas distribution pipeline 61 of the Roots blower 6 arranged outside; the surface of the inflatable ring 53 is provided with a plurality of air holes 55, and after the Roots blower 6 is started, high-pressure air enters the inflatable box 5 through the air pipe 61 and is ejected from the inflatable ring 53 through the air distribution pipe 52 and the inflatable joint 54; under the dual actions of air stirring and gravity, the fluorite powder generates a funnel effect in the homogenization silo 2, receives high-pressure air for multi-layer cutting when falling, is fully mixed, and generates different fluidization expansion actions on parallel material surfaces in the homogenization silo 2 through fluidization air in different directions sprayed from different air charging layers 51, and is discharged in some areas in the homogenization silo 2, and some areas are fluidized, so that the fluorite powder in the homogenization silo 2 is uniformly mixed.

Further, a rectangular inflation layer 51 formed by encircling the inflation ring 53 is further arranged in the center of the inflation box 5, and is a fourth inflation layer 514, an inflation connector 54 is arranged at the bottom of the inflation ring 53 forming the fourth inflation layer 514, and the ventilation pipeline 61 of the Roots blower 6 is externally connected; an outlet 56 is reserved in the air charging layer 51 and is overlapped with the discharge hole 22 of the cone bucket surface 21 at the bottom of the homogenization silo 2 for discharging.

Referring to fig. 6, the dust remover 7 uses a cloth bag to remove dust, the dust remover 7 includes a plurality of cloth bag cages 71 arranged at the top of the homogenization warehouse 2 in a quincuncial shape, a dust remover pulse valve 72 is disposed at the top of each cloth bag cage 71, dust generated in the mixing homogenization process is absorbed and treated by the cloth bag dust remover 7 at the top, and the compressed air is injected into the cloth bag cages 71 at regular time by the dust remover pulse valve 72 to shake out fluorite dust absorbed by the fluorite dust into the homogenization warehouse 2.

Example 2

Example 2 differs from example 1 in that:

referring to fig. 3, two homogenizing reservoirs 2 are symmetrically disposed on two sides of the fluorite powder lifter 1, and two sets of input devices 3 are connected to the side wall of the fluorite powder lifter 1 to input fluorite powder to the two homogenizing reservoirs 2. Two sets of homogenization warehouses 2 are arranged, and the powder feeding amount of the two homogenization warehouses 2 is controlled by a pneumatic rotary valve 32 and an air conveying chute 31 at the outlet of a fluorite powder lifting machine 1, so that 200T/station of fluorite powder can be stored, and the production requirement is fully met; if two sets of homogenization warehouses 2 are arranged, 2 Roots fans 6 and ventilation pipelines 61 are arranged on the outer sides of the homogenization warehouses 2, the two Roots fans 6 and the ventilation pipelines 61 are connected in parallel, and if one failure occurs, the homogenization warehouses can be switched and used at any time, so that the influence on production is avoided.

The working principle of the utility model is as follows:

wet fluorite powder purchased from different suppliers is subjected to moisture removal through a drying furnace, dry powder is fed into a fluorite powder lifter 1 through a drying furnace feeding screw, the dry powder is fed into a homogenization warehouse 2 through a pneumatic rotary valve 32 and an air conveying chute 31, the warehousing quantity of the fluorite powder is controlled, a Roots blower 6 is started while the fluorite powder enters the homogenization warehouse 2, and high-pressure air generated by the Roots blower 6 is inflated into the homogenization warehouse 2 through an inflation box 5, so that the fluorite powder is continuously increased and is continuously rolled and mixed in the homogenization warehouse 2; after the fluorite powder amount in the homogenization silo 2 reaches the set height of the rotation-resistant level gauge 8, the self-control interlocking system controls the Roots blower 6 to immediately stop blowing air into the homogenization silo 2; the dust generated in the mixing and homogenizing process is absorbed and treated by a dust remover 7 arranged at the top of the homogenizing warehouse 2, and compressed air is sprayed into a simple cloth bag cage 71 at regular time by a dust remover pulse valve 72 to shake off fluorite dust adsorbed by the compressed air into the homogenizing warehouse 2; the fluorite powder which is evenly mixed is discharged through a material bearing box 41 and a material discharging device 42 which are arranged at the bottom of the cone hopper surface 22, and is conveyed to a workshop bin for storage by a material discharging screw conveyor 43 in a screw manner.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. A high-efficient fluorite powder homogenization device which characterized in that: comprises a fluorite powder lifting machine (1) and a homogenization warehouse (2) which are communicated with each other; the fluorite powder lifting machine (1) is communicated with a material port at the top of the homogenization warehouse (2) through an input device (3) connected with the side wall so as to input different fluorite powder; a discharge hole (22) is formed in the center of a cone bucket surface (21) at the bottom of the homogenization warehouse (2), and a spiral discharge system (4) is arranged on the discharge hole (22) to discharge fluorite powder which is uniformly mixed; the inner side wall of the cone bucket surface (21) at the bottom of the homogenization warehouse (2) is provided with an inflation box (5) in a distributed manner; the air charging box (5) is communicated with a Roots blower (6) arranged outside the homogenization warehouse (2); the top of the homogenization warehouse (2) is provided with a dust remover (7) and a rotation-resistant level gauge (8); the Roots blower (6) is connected with the rotation-resistant level gauge (8) through an automatic control interlocking system for automatic control; the inflatable box (5) is integrally provided with a plurality of inflatable layers (51) in a circular ring shape from outside to inside, an air distribution pipe (52) is arranged between two adjacent inflatable layers (51), each inflatable layer (51) comprises a plurality of circumferentially spaced inflatable rings (53), each inflatable ring (53) is provided with an inflatable joint (54), and each inflatable joint (54) is connected with an adjacent air distribution pipe (52); the gas distribution pipe (52) is connected with a ventilation pipeline (61) of the Roots blower (6) arranged outside; a plurality of air holes (55) are formed in the surface of the inflatable ring (53); the spiral discharging system (4) comprises a material bearing box (41), a discharging device (42) and a discharging screw conveyor (43); the material bearing box (41) is fixed on a discharge hole (22) at the bottom of the homogenization warehouse (2) so as to receive the fluorite powder discharged from the homogenization warehouse (2); the inlet of the discharging device (42) is communicated with the outlet of the material bearing box (41), the inlet of the discharging screw conveyor (43) is communicated with the outlet of the discharging device (42), and the discharging screw conveyor (43) is used for conveying fluorite powder to a workshop storage bin in a screw manner.

2. The high efficiency fluorite powder homogenizing apparatus of claim 1 wherein: the two homogenization warehouses (2) are arranged, and two sets of input devices (3) are connected to the side walls of the fluorite powder lifting machine (1) to input fluorite powder to the two homogenization warehouses (2) respectively.

3. A high efficiency fluorite powder homogenizing apparatus as claimed in any one of claims 1 or 2, wherein: the input device (3) comprises an air delivery chute (31) and a pneumatic rotary valve (32); the fluorite powder lifting machine (1) is communicated with a fluorite powder inlet at the top of the homogenization warehouse (2) through an air conveying chute (31); a pneumatic rotary valve (32) is arranged on a fluorite powder outlet of the fluorite powder lifting machine (1).

4. The high efficiency fluorite powder homogenizing apparatus of claim 1 wherein: the side wall of the material bearing box (41) is opened and then is connected with a blowing pipe (44), and blowing air towards the inside of the material bearing box (41) is prevented from being blocked.

5. The high efficiency fluorite powder homogenizing apparatus of claim 1 wherein: the center of the air box (5) is also provided with a rectangular air charging layer (51) formed by encircling an air charging ring (53), the bottom of the air charging ring (53) is provided with an air charging joint (54), and the air charging joint is externally connected with an air charging pipeline (61) of the Roots blower (6); an outlet (56) is reserved in the air charging layer (51), and is overlapped with a discharge hole (22) of the cone bucket surface (21) at the bottom of the homogenization warehouse (2) for discharging.

6. A high efficiency fluorite powder homogenizing apparatus as claimed in any one of claims 1 or 2, wherein: the dust remover (7) adopts the sack to remove dust, dust remover (7) are arranged at homogenization storehouse (2) top with plum blossom form including a plurality of sack cages (71), and every sack cage (71) top all is provided with dust remover pulse valve (72).