阅读说明：本技术 一种稀土结晶成型装置 (Tombarthite crystallization forming device ) 是由 杜巍 安翔 贾军伟 聂玉凯 李旭 于 2020-04-26 设计创作，主要内容包括：本发明公开了一种稀土结晶成型装置,包括浓缩装置、除烟除尘系统、冷凝结片机、传输装置、称重包装系统以及电气控制系统,所述浓缩装置包括两组浓缩釜和缓冲釜,且浓缩釜和缓冲釜上设置有相连通的放料管线和伴热管线,所述除烟除尘系统包括除尘系统和除烟系统,所述传输装置为斗式提升机、大倾角皮带输送机以及输送管线其中一种,电气控制系统包括低压配电柜、PLC控制柜、现场操作站。该稀土结晶成型装置,简化人员操作工序,改为自动化控制操作,实现从浓缩工艺、结片成型、破碎、称重包装等过程连续式生产,辅助以除烟和除尘设备,极大的改善了现场工作环境,降低人员接触有毒有害物质的时间和空气中有毒有害气体及粉尘浓度。(The invention discloses a rare earth crystallization forming device, which comprises a concentration device, a smoke and dust removing system, a condensation flaker, a transmission device, a weighing and packaging system and an electrical control system, wherein the concentration device comprises two groups of concentration kettles and a buffer kettle, a discharge pipeline and a heat tracing pipeline which are communicated are arranged on the concentration kettles and the buffer kettle, the smoke and dust removing system comprises a dust removing system and a smoke removing system, the transmission device is one of a bucket elevator, a large-inclination-angle belt conveyor and a transmission pipeline, the electrical control system comprises a low-voltage power distribution cabinet, a P L C control cabinet and an on-site operation station, the rare earth crystallization forming device simplifies the operation procedures of personnel, changes the operation procedures into automatic control operation, realizes continuous production from the processes of concentration process, flaking forming, crushing, weighing and packaging, and the like, assists in removing smoke and dust, greatly improves the on-site working environment, and reduces the time of contacting toxic and harmful substances by personnel and the concentration of toxic and harmful gases and dust in the air.)

1. The utility model provides a tombarthite crystallization forming device, includes enrichment facility (1), smoke abatement dust pelletizing system, condensation flaker (3), transmission device (5), weighing packaging system (6) and electrical control system, its characterized in that: the concentration device (1) comprises two groups of concentration kettles (7) and a buffer kettle (9), wherein a discharge pipeline (8) and a heat tracing pipeline which are communicated are arranged on the concentration kettles (7) and the buffer kettle (9), the heat tracing pipeline comprises a steam return pipeline (11) and a steam inlet pipeline (12), and the lower end of the discharge pipeline (8) is connected with a distributor (10) arranged on the side surface of the condensation flaker (3);

the smoke and dust removing system comprises a dust removing system (2) and a smoke removing system (4), wherein the dust removing system (2) comprises smoke removing induced draft, a smoke removing circulating water pump and a smoke removing absorption tank, and the smoke removing system (4) comprises a dust removing induced draft fan, a cyclone dust collector, a pulse type bag-type dust collector and corresponding connecting pipelines;

the condensation flaker (3) comprises a distributing device (10), a pulverizer (16), a circulating water cooling system (17), a frame (20), a steel belt machine (21) and a steel belt machine automatic deviation correcting device (23), wherein the steel belt machine (21) is fixed on the frame (20), the steel belt machine automatic deviation correcting device (23) is fixed on the left side of the frame (20), the distributing device (10) is fixed at the front end of the steel belt machine (21), and the circulating water cooling system (17) comprises a cooling pipeline, a cooling water return port (19), a cooling water inlet (18) and a water collecting plate (22);

the conveying device (5) is one of a bucket elevator, a large-inclination-angle belt conveyor and a conveying pipeline, a weighing device fixing frame (26) and a weighing belt scale (27) of a weighing and packaging system (6) are correspondingly fixed at the lower end of a conveyor structure (25), the weighing and packaging system (6) is one of a semi-automatic weighing and packaging system and a full-automatic weighing and packaging system, and an electrical control system comprises a low-voltage power distribution cabinet, a P L C control cabinet and a field operation station.

2. The rare earth crystal molding apparatus according to claim 1, wherein: be provided with two sets of concentrated cauldron (7) and buffering cauldron (9) on enrichment facility (1), every group is provided with four concentrated cauldron (7) and a buffering cauldron (9), and blowing pipeline (8) after four concentrated cauldron (7) are parallelly connected in the same group and buffering cauldron (9) intercommunication in the same group, blowing pipeline (8) after two sets of four concentrated cauldron (7) are parallelly connected are linked together, blowing pipeline (8) that two sets of buffering cauldron (9) lower extreme are connected are linked together, cooling fan (13) are two sets of concentrated cauldron (7) simultaneously, buffering cauldron (9) and blowing pipeline (8) heat supply, and contact after steam admission pipeline (12) inside heat transfer is got rid of through steam return air pipe (11) and is formed cyclic utilization.

3. The rare earth crystal molding apparatus according to claim 1, wherein: the materials conveyed on the concentration device (1) pass through the steel belt machine (21) on which the distributing device (10) is uniformly arranged, a large amount of smoke is generated when the materials contact the steel belt from a high-temperature state, smoke is extracted to a smoke removal absorption tank through a smoke removal induced draft fan on the dust removal system (2) to absorb the smoke and then discharge clean air, absorption liquid in the absorption tank is circularly sprayed to a filter element through a smoke removal circulating water pump to absorb and filter pollutants in the smoke and discharge clean air, because the texture of the crystallized material is crisp, a crusher can generate a large amount of dust floating in the air during the production process, dust in the air is extracted to the cyclone through the dust removal draught fan on the smoke removal system (4), the cyclone filters out and carries out secondary dust removal through the pulsed sack cleaner after the dust that large granule and density are high, the clean air of discharging at last, and the dust removal smoke abatement subassembly on dust pelletizing system (2) and smoke removal system (4) can be replaced and used.

4. The rare earth crystal molding apparatus according to claim 1, wherein: frame (20) that dust pelletizing system (2) were last to be set up adopts cordwood system combination concatenation mode, and the material is 304 stainless steel, and dust pelletizing system (2) equipment upper portion installation split type can dismantle totally-enclosed guard shield simultaneously, and the cloth baffle is installed to the frame both sides in the 3 meters scope in distributor rear, is equipped with feed port, steel band machine gas vent (24) and conveyer structure (25) respectively from the head to the tail, and steel band machine driving motor (14) of connecting on water-collecting plate (22) adopts the converter drive, and distributor (10) are connected to the feed port simultaneously, and steel band machine gas vent (24) and dust pelletizing system (2) intercommunication conveyer structure (25) and smoke abatement system (4) intercommunication.

5. A rare earth crystal molding apparatus according to claim 2, characterized in that: the steel band machine (21) below that sets up on condensation flaker (3) sets up water-collecting plate (22) of rectangular shape, and cooling tube intercommunication on water-collecting plate (22) and circulating water cooling system (17), the inlet tube that cooling official said is connected in cooling water inlet (18), and evenly install the cooling shower nozzle on the cooling inlet tube, and the cooling spun water is collected through water-collecting plate (22) and is got rid of through cooling return water mouth (19) after in the cooling outlet pipe, form the circulation of water, condensation flaker (3) middle part top evenly is provided with three cooling fan of group (13) simultaneously.

6. The rare earth crystallization forming device according to claim 1, wherein the weighing and packaging system (6) adopts a full-automatic weighing and packaging system, the full-automatic weighing and packaging system realizes full-automatic control from a storage bin to stacking through control of a P L C control system, weighing is carried out through a weighing belt scale (27), other weighing devices can be adopted for replacement, after the automatic weighing and packaging system hangs a packaging bag or a barrel, a storage bin discharge valve is opened for discharging and weighing, and after the discharging and weighing, the bag is automatically taken off and is transmitted to a packaging machine for packaging.

7. The rare earth crystallization molding device according to claim 1, wherein the electrical control system adopts a P L C control cabinet to form a P L C control system, the P L C control system adopts a controller to realize centralized monitoring and control of units such as driving components, meters and valves in the production process, and realizes the functions of automatic control, interlocking, real-time monitoring, alarm information processing and historical trend analysis of the whole device according to program logic, the temperature, pressure and liquid level in the concentration kettle (7) are locally displayed and remotely transmitted to the P L C control system, the temperature, pressure and liquid level in the concentration kettle (7) are monitored and set to alarm threshold through an operation station panel, the alarm threshold is triggered when the temperature and liquid level in the buffer kettle (9) reach the P L C control system, the alarm threshold is monitored and set through the operation station panel, the alarm threshold is triggered when the temperature and pressure in the circulating water cooling system (17) reach the P L C control system, and the alarm threshold is triggered when the temperature and pressure in the circulating water cooling system reaches the monitoring threshold.

8. The rare earth crystal molding apparatus according to claim 1, wherein: all install vacuum valve, temperature sensor, pressure sensor, level gauge, blowing pipeline and heat tracing pipeline on concentrated cauldron (7) and buffer kettle (9), and install feed valve, baiting valve on blowing pipeline (8), install release valve and steam valve on the heat tracing pipeline.

9. The rare earth crystal molding apparatus according to claim 1, wherein: concentrated cauldron (7) adopt carbon steel to press from both sides concentrated cauldron of cover inside lining enamel, concentrated cauldron (7) are including jar body (36) and jar heating chamber (28) of body (36) outside seal parcel, the ring arrangement has sight glass observation window (29) on jar body (36), the temperature sensor installing port, the feed inlet, the pressure sensor installing port, the level gauge installing port, the mouth bleeds, the centre is vacuum extraction opening (30), there is companion's heat import (31) of heating chamber (28) intercommunication concentrated cauldron (7) side, the inside heating medium optional steam of heating chamber (28) or conduction oil, and be provided with first nozzle mouth (32) and second nozzle mouth (33) with heating chamber (28) intercommunication, be the drain hole in the middle of concentrated cauldron (7) end simultaneously, drain hole both sides are drain and companion's heat export (35) that third nozzle mouth (34) constitute.

Technical Field

The invention relates to the field of rare earth crystallization molding, in particular to a rare earth crystallization molding device.

Background

The current domestic rare earth chloride crystallization forming process is mainly completed by manual operation, and the process flow is that mother liquor is added into a concentration kettle, the concentration kettle is heated by steam to concentrate materials, and the concentration kettle is vacuumized to accelerate the concentration process; placing the concentrated material into a tray through a manual discharge valve for natural cooling, manually crushing the crystallized material into small blocks or small pieces, and manually bagging and packaging the small blocks or small pieces; the whole process has the disadvantages of high labor intensity, severe production environment, ineffective control of product shape and low productivity and working efficiency.

Disclosure of Invention

The invention solves the technical problem of overcoming the problems in the background art and provides a rare earth crystallization forming device.

In order to achieve the purpose, the invention provides the following technical scheme: a rare earth crystallization forming device comprises a concentration device, a smoke and dust removing system, a condensation flaker, a transmission device, a weighing and packaging system and an electrical control system, wherein the concentration device comprises two groups of concentration kettles and a buffer kettle, discharge pipelines and heat tracing pipelines which are communicated with each other are arranged on the concentration kettles and the buffer kettle, the heat tracing pipelines comprise a steam return pipeline and a steam inlet pipeline, and the lower end of the discharge pipeline is connected with a distributor arranged on the side surface of the condensation flaker;

the system comprises a smoke-removing and dust-removing system and a smoke-removing system, wherein the smoke-removing and dust-removing system comprises smoke-removing induced air, a smoke-removing circulating water pump and a smoke-removing absorption tank, and the smoke-removing system comprises a dust-removing induced draft fan, a cyclone dust collector, a pulse bag-type dust collector and corresponding connecting pipelines;

the condensation flaker comprises a distributing device, a crusher, a circulating water cooling system, a frame, a steel belt machine and an automatic deviation correcting device of the steel belt machine, wherein the steel belt machine is fixed on the frame, the automatic deviation correcting device of the steel belt machine is fixed on the left side of the frame, the distributing device is fixed at the front end of the steel belt machine, and the circulating water cooling system comprises a cooling pipeline, a cooling water return port, a cooling water inlet and a water collecting plate;

the conveying device is one of a bucket elevator, a large-inclination-angle belt conveyor and a conveying pipeline, a weighing device fixing frame and a weighing belt scale which are used for correspondingly fixing a weighing and packaging system are arranged at the lower end of the conveyor structure, the weighing and packaging system is one of a semi-automatic weighing and packaging system and a full-automatic weighing and packaging system, and an electrical control system comprises a low-voltage power distribution cabinet, a P L C control cabinet and a field operation station.

Further, be provided with two sets of concentrated cauldron and buffering cauldron on the enrichment facility, every group is provided with four concentrated kettles and a buffering cauldron, and the blowing pipeline after four concentrated cauldron are parallelly connected in the same group and the buffering cauldron intercommunication in the same group, the blowing pipeline after two sets of four concentrated cauldron are parallelly connected is linked together, the blowing pipeline of two sets of buffering cauldron lower extreme connections is linked together, cooling fan is two sets of concentrated kettles simultaneously, buffering cauldron and blowing pipeline heat supply, and contact after the inside heat transfer of steam admission line is got rid of through steam return-air pipe and is formed cyclic utilization.

Furthermore, the materials conveyed by the concentration device pass through the steel belt machine on which the distributing device is uniformly arranged, a large amount of smoke is generated when the materials contact the steel belt from a high-temperature state, the smoke is pumped to the smoke-removing absorption tank by the smoke-removing draught fan on the dust-removing system to absorb the smoke and then discharge clean air, the absorption liquid in the absorption tank is circularly sprayed on the filter element by the smoke-removing circulating water pump to absorb and filter pollutants in the smoke and discharge clean air, because the texture of the crystallized material is crisp, a crusher can generate a large amount of dust floating in the air during the production process, dust in the draught fan extraction air through the dust removal on the smoke abatement system to cyclone, the secondary dust removal is carried out through the pulsed sack cleaner again after the dust that cyclone filters out large granule and density height, the clean air of final discharge, and the dust removal smoke abatement subassembly on dust pelletizing system and the smoke abatement system can be replaced and used.

Furthermore, a frame arranged on the dust removal system is made of 304 stainless steel in a building block type combined splicing mode, a split type detachable fully-closed protective cover is arranged on the upper portion of the dust removal system, distributing baffles are arranged on two sides of the frame within 3 m behind the distributing device, a feed hole, a steel belt machine exhaust port and a conveyor structure are arranged from the head to the tail respectively, a steel belt machine driving motor connected to a water collecting plate is driven by a frequency converter, the feed hole is connected with the distributing device, and the steel belt machine exhaust port is communicated with the dust removal system through the conveyor structure and communicated with a smoke removal system.

Further, the last steel band machine below that sets up of condensation flaker sets up the water-collecting plate of rectangular shape, and the cooling tube intercommunication on water-collecting plate and the circulating water cooling system, the inlet tube that the cooling official said is connected to the cooling water inlet to evenly install the cooling shower nozzle on the cooling inlet tube, and the cooling spun water passes through the water-collecting plate and collects later get rid of through cooling return water mouth in the cooling outlet pipe, forms the circulation of water, and condensation flaker middle part top evenly is provided with three cooling fan of group simultaneously.

Further, the full-automatic weighing and packaging system is adopted, and the full-automatic weighing and packaging system realizes full-automatic control from the storage bin to the stacking through the control of the P L C control system, wherein weighs through the weighing belt weigher, and can adopt other weighing devices to replace and use, and after the automatic weighing and packaging system hangs the wrapping bag or the bucket, the storage bin discharge valve is opened to carry out the blowing and weighing, and the automatic bag that takes off and transmit to packagine machine and carry out the packet operation after accomplishing.

Furthermore, the electric control system adopts a P L C control cabinet to form a P L C control system, the P L C control system adopts a controller to realize centralized monitoring and control of units such as various driving components, meters, valves and the like in the production process, and realizes the functions of automatic control, interlocking, real-time monitoring, alarm information processing and historical trend analysis of the whole set of device according to program logic, the temperature, pressure and liquid level in the concentration kettle are locally displayed and remotely transmitted to the P L C control system, the alarm threshold value is monitored and set through an operation station panel, the alarm is triggered when the temperature and the liquid level reach the high limit value, the temperature and the liquid level of the buffer kettle are locally displayed and remotely transmitted to the P L C control system, the alarm threshold value is monitored and set through the operation station panel, the alarm is triggered when the temperature and the pressure of circulating water in the circulating water cooling system reach the P L C control system, and the alarm threshold value is monitored and set through the operation station panel, and the alarm threshold value is triggered when the temperature and the.

Further, all install vacuum valve, temperature sensor, pressure sensor, level gauge, blowing pipeline and heat tracing pipe line on concentrated cauldron and the buffer kettle, and install feed valve, blow-off valve on the blowing pipeline, install release valve and steam valve on the heat tracing pipe line.

Further, concentrated cauldron adopts carbon steel to press from both sides concentrated cauldron of cover inside lining enamel, concentrated cauldron is including jar body and jar heating chamber of external side seal parcel, the ring arrangement has the sight glass observation window on the jar body, the temperature sensor installing port, the feed inlet, the pressure sensor installing port, the level gauge installing port, the mouth loses heart, the centre is vacuum extraction opening, there is the heat tracing import of heating chamber intercommunication concentrated cauldron side, the heating medium optional steam or the conduction oil of heating intracavity portion, and be provided with first nozzle mouth and the second nozzle mouth with the heating chamber intercommunication, be the drain hole in the middle of the concentrated cauldron bottom simultaneously, drain hole both sides are drain and the heat tracing export that third nozzle mouth constitutes.

Compared with the prior art, the invention has the beneficial effects that: the rare earth crystallization forming device is provided with a plurality of crystallization forming grooves,

1. the operation procedures of personnel are simplified, most of the work with high labor intensity is changed into automatic control operation, and continuous production from the processes of concentration process, sheeting forming, crushing, weighing, packaging and the like is realized;

2. the process production flow is managed visually, the production state of each link of the whole set of device can be checked and controlled in real time through the panel of the operation station, operators are helped to master the production condition in time, the probability of production accidents is reduced, and the personal safety of the operators is protected;

3. the auxiliary smoke removing and dust removing device greatly improves the field working environment, and reduces the time for personnel to contact toxic and harmful substances and the concentration of toxic and harmful gas and dust in the air;

4. by using the novel sheeting forming technology, the crystallization thickness and the shape and the size of a finished product can be effectively controlled, and the quality and the capacity of the product are improved.

Drawings

FIG. 1 is a schematic diagram of a crystal forming process kit of the present invention;

FIG. 2 is a schematic view of the arrangement of the negative pressure discharge pipe of the structure of the present invention;

FIG. 3 is a schematic view of a heat trace line of the present invention configuration;

FIG. 4 is a schematic view of a rotary steel belt type condensing flaker of the present invention;

FIG. 5 is a schematic view of the left side of a rotary steel belt type cold-flaker of the present invention;

FIG. 6 is a schematic view of the middle part of a rotary steel belt type condensing flaker with the structure of the present invention;

FIG. 7 is a schematic view of the right side of a rotary steel belt type cold-flaker of the present invention;

FIG. 8 is a schematic top view of a rotary steel belt type cold flaker of the present invention;

FIG. 9 is a schematic view of a high inclination belt conveyor of the present invention configuration;

FIG. 10 is a schematic view of the mounting of a weighing belt scale of the present invention configuration;

FIG. 11 is a schematic diagram of a concentrator vessel according to the present invention;

FIG. 12 is a schematic top view of a concentrator vessel constructed in accordance with the teachings of the present invention;

FIG. 13 is a schematic view of the logic of the A set of kettle discharge valve interlock of the structure of the present invention;

FIG. 14 is a schematic view of the logic of the interlocking of the discharge valve of the B set of kettles constructed according to the present invention;

FIG. 15 is a schematic view of the logic for interlocking the feed valve of the tank set A in the configuration of the present invention;

FIG. 16 is a schematic representation of the logic for interlocking the feed valves of a tank set B constructed in accordance with the present invention;

FIG. 17 is a schematic view of the logic for interlocking the A set of kettle steam valves according to the configuration of the present invention;

FIG. 18 is a schematic representation of the logic for interlocking the B set kettle steam valves for the configuration of the present invention;

FIG. 19 is a diagrammatic view of the pellet mill interlock logic of the inventive structure;

FIG. 20 is a schematic diagram of the power circuit wiring of the inventive structure;

FIG. 21 is a schematic diagram of the control power supply wiring of the inventive structure.

In the figure: 1. a concentration device; 2. a dust removal system; 3. condensing and sheeting the mixture; 4. a smoke abatement system; 5. a transmission device; 6. a weighing and packaging system; 7. a concentration kettle; 8. a discharge pipeline; 9. a buffer kettle; 10. a distributing device; 11. a steam return gas pipeline; 12. a steam inlet line; 13. a cooling fan; 14. a steel belt machine driving motor; 15. a dust removal port; 16. a pulverizer; 17. a circulating water cooling system; 18. cooling the water inlet; 19. a cooling water return port; 20. a frame; 21. a steel belt machine; 22. a water collection plate; 23. an automatic deviation rectifying device of the steel belt machine; 24. a steel belt machine exhaust port; 25. a conveyor structure; 26. a weighing device fixing frame; 27. a weighing belt scale; 28. a heating cavity; 29. a sight glass observation window; 30. a vacuum pumping port; 31. a heat tracing inlet; 32. a first nozzle opening; 33. a second nozzle opening; 34. a third nozzle opening; 35. a heat tracing outlet; 36. and (5) a tank body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-21, the rare earth crystallization forming device of the present invention comprises a concentration device 1, a smoke and dust removing system, a condensation flaker 3, a transmission device 5, a weighing and packaging system 6 and an electrical control system, wherein the concentration device 1 comprises two sets of concentration kettles 7 and a buffer kettle 9, the concentration kettles 7 and the buffer kettle 9 are provided with a discharge pipeline 8 and a heat tracing pipeline which are communicated with each other, the heat tracing pipeline comprises a steam return pipeline 11 and a steam inlet pipeline 12, and the lower end of the discharge pipeline 8 is connected with a material distributor 10 arranged on the side surface of the condensation flaker 3; the concentration device 1 is provided with two groups of concentration kettles 7 and buffer kettles 9, each group is provided with four concentration kettles 7 and one buffer kettle 9, discharge pipelines 8 formed by connecting four concentration kettles 7 in parallel in the same group are communicated with the buffer kettles 9 in the same group, discharge pipelines 8 formed by connecting four concentration kettles 7 in parallel in two groups are communicated, discharge pipelines 8 connected with the lower ends of the two groups of buffer kettles 9 are communicated, meanwhile, a cooling fan 13 supplies heat for the two groups of concentration kettles 7, the buffer kettles 9 and the discharge pipelines 8, and contact after heat exchange in a steam inlet pipeline 12 is eliminated through a steam return pipeline 11 to form cyclic utilization;

the concentration kettle 7 adopts a carbon steel jacket lining enamel concentration kettle, the concentration kettle 7 comprises a tank body 36 and a heating cavity 28 hermetically wrapped outside the tank body 36, a sight glass observation window 29, a temperature sensor mounting port, a feed inlet, a pressure sensor mounting port, a liquid level meter mounting port and an air release port are annularly arranged on the tank body 36, a vacuum pumping port 30 is arranged in the middle, a heat tracing inlet 31 communicated with the heating cavity 28 is arranged on the side surface of the concentration kettle 7, steam or heat conducting oil can be selected as a heating medium in the heating cavity 28, a first nozzle port 32 and a second nozzle port communicated with the heating cavity 28 are arranged, a discharge port is arranged in the middle of the bottom of the concentration kettle 7, a drain outlet and a heat tracing outlet 35 are arranged on two sides of the discharge port, a vacuum valve, a temperature sensor, a pressure sensor, a liquid level meter, a discharge pipeline and a heat tracing pipeline are respectively arranged on the concentration kettle 7 and, The material discharging valve and the heat tracing pipeline are provided with an air escape valve and a steam valve;

a feeding valve, namely a jacket heat-preservation pneumatic ball valve made of 316L materials, and a single-action cylinder, a positioner, an air filtering pressure reducer, a DC24V two-position three-way type electromagnetic valve and a hand wheel are assembled, and the hand wheel drive can be replaced and selected to be electrically driven;

the air release valve adopts a full 316L material jacket heat preservation pneumatic ball valve, and is assembled with a single-action cylinder, a positioner, an air filtering pressure reducer, a DC24V two-position three-way type electromagnetic valve and a hand wheel, and the hand wheel drive can be replaced and selected to be electrically driven;

a vacuum valve which is a pneumatic ball valve made of 316L materials and is provided with a single-action cylinder, a positioner, an air filtering pressure reducer, a DC24V two-position three-way type electromagnetic valve and a hand wheel, and the hand wheel drive can be replaced and selected by electric drive;

a steam valve: the pneumatic ball valve made of the whole WCB material is adopted, a single-action cylinder, a positioner, an air filtering pressure reducer, a DC24V two-position three-way type electromagnetic valve and a hand wheel are assembled, and the hand wheel drive can be replaced and selected to be electrically driven;

a discharge valve, namely a full 316L material jacket heat-preservation pneumatic upward-expanding valve, a single-action cylinder, a positioner, an air filtering pressure reducer, a DC24V two-position three-way electromagnetic valve and a hand wheel are assembled;

a temperature sensor: an integral temperature transmitter with a screen display is adopted, the precision is 0.2 grade, and an enamel sleeve is assembled;

a pressure sensor: assembling a radiating O-shaped ring and a needle valve group by adopting a direct-connection type intelligent pressure transmitter;

a liquid level meter: adopting a high-frequency radar type liquid level meter, and performing high-temperature-resistant fluorine lining treatment on a contact part of the liquid level meter and the material;

discharging pipelines: the whole pipeline is designed into a double-layer jacket, the outer layer is welded by a carbon steel seamless steel pipe, the inner layer is welded by a titanium alloy customized pipeline, the front end of the pipeline is provided with a steam purging port through flange connection, the front end of the pipeline is slightly higher than the tail end, so that the material condensation in the pipeline is reduced, and the cleaning and purging work of the pipeline is facilitated;

heat tracing pipeline: the heat tracing pipelines and valves are connected in series through metal corrugated pipes according to the design scheme, a cut-off valve is required to be additionally arranged on the heat tracing inlet pipeline and the heat tracing return pipeline of each path, the temperature of each branch heat tracing pipeline is controlled according to the process requirement, and the later maintenance and repair work is facilitated.

The concentration process flow comprises the following steps: injecting liquid rare earth mother liquor into a concentration kettle 7, opening a steam valve, introducing steam to heat the concentration kettle 7, simultaneously opening a vacuum valve, pumping vacuum in the concentration kettle 7 to form negative pressure, accelerating the concentration process of a product, monitoring the production process in real time through sensors such as temperature, pressure and liquid level on the concentration kettle 7, closing a feed valve in an interlocking manner when the liquid level reaches an upper limit, closing an air escape valve in an interlocking manner when vacuum is pumped, and automatically closing the feed valve when a discharge valve is opened to prevent unconcentrated mother liquor from mixing; after the materials in the concentration kettle 7 are concentrated to a proper concentration, closing the vacuum valve and the steam valve, and opening the air escape valve to keep the pressure in the kettle at a normal pressure state, so as to prepare for discharging the materials to the buffer kettle 9 in the next step;

before the materials are put into the buffer kettle, opening a material feeding pipeline heat tracing valve and a buffer kettle steam valve to keep the temperature of the material feeding pipeline, the buffer kettle and an approach valve above 80 ℃, simultaneously opening a buffer kettle air release valve, and blowing the material feeding pipeline by using steam to ensure that the pipeline is smooth;

when the material is discharged to the buffer kettle 9, the feed valve of the buffer kettle 9 is firstly opened, then the discharge valve of the concentration kettle 9 needing to discharge the material is opened, when the material liquid level of the buffer kettle 9 exceeds the interlocking limit value, the feed valve of the buffer kettle is automatically closed, and the material in the buffer kettle 9 can not be stored for too long time.

The smoke and dust removing system comprises a dust removing system 2 and a smoke removing system 4, wherein the dust removing system 2 comprises smoke removing induced air, a smoke removing circulating water pump and a smoke removing absorption tank, and the smoke removing system 4 comprises a dust removing induced draft fan, a cyclone dust collector, a pulse type bag dust collector and corresponding connecting pipelines; the materials conveyed by the concentration device 1 pass through the steel belt machine 21 uniformly arranged by the distributing device 10, a large amount of smoke is generated when the materials contact the steel belt from a high temperature state, the smoke is extracted to the smoke removing absorption tank by the smoke removing draught fan on the dust removing system 2 to discharge clean air after the smoke is absorbed by the smoke removing absorption tank, absorption liquid in the absorption tank is circularly sprayed on the filter element by the smoke removing circulating water pump to absorb and filter pollutants in the smoke and discharge clean air, because the texture of the crystallized material is crisp, a crusher can generate a large amount of dust floating in the air during the production process, dust in the draught fan extraction air through removing dust on the smoke system 4 to cyclone, the secondary dust removal is carried out through the pulsed sack cleaner again after cyclone filters off the dust that large granule and density are high, the clean air of discharging at last, and the dust removal smoke abatement subassembly on dust pelletizing system 2 and the smoke system 4 can be replaced and used.

The condensation flaker 3 comprises a distributing device 10, a crusher 16, a circulating water cooling system 17, a frame 20, a steel belt machine 21 and a steel belt machine automatic deviation rectifying device 23, wherein the steel belt machine 21 is fixed on the frame 20, the steel belt machine automatic deviation rectifying device 23 is fixed on the left side of the frame 20, the distributing device 10 is fixed at the front end of the steel belt machine 21, and the circulating water cooling system 17 comprises a cooling pipeline, a cooling water return port 19, a cooling water inlet 18 and a water collecting plate 22; a strip-shaped water collecting plate 22 is arranged below a steel belt machine 21 arranged on a condensation flaker 3, the water collecting plate 22 is communicated with a cooling pipeline on a circulating water cooling system 17, a cooling water inlet 18 is connected with a water inlet pipe of a cooling pipeline, cooling nozzles are uniformly arranged on the cooling water inlet pipe, a cooling sprayed water body is collected into a cooling water outlet pipe through the water collecting plate 22 and then is discharged through a cooling water return port 19 to form water body circulation, and three groups of cooling fans 13 are uniformly arranged above the middle part of the condensation flaker 3; a frame 20 arranged on a dust removal system 2 is spliced in a building block type combination mode, the material is 304 stainless steel, meanwhile, a split type detachable fully-closed protective cover is arranged on the upper portion of the dust removal system 2, material distribution baffle plates are arranged on two sides of the frame within 3 m behind a material distributor, a feed hole, a steel belt machine exhaust port 24 and a conveyor structure 25 are arranged from a machine head to a machine tail respectively, a steel belt machine driving motor 14 connected to a water collection plate 22 is driven by a frequency converter, stepless speed regulation under the frequency of 0-50 Hz can be achieved, a pulverizer 16 and a cooling fan 13 are controlled by direct power frequency start and stop, emergency stop button stations are arranged at two ends of the equipment, a steel belt deviation alarming interlocking device is arranged below the machine head, meanwhile, the feed hole is connected with the material distributor 10, and the steel belt machine exhaust port 24 is communicated with.

The conveying device 5 is one of a bucket elevator, a large-inclination-angle belt conveyor and a conveying pipeline, the lower end of a conveyor structure 25 corresponds to a weighing device fixing frame 26 for fixing a weighing and packaging system 6, the conveying device 5 conveys materials to a buffer bin, the bin is provided with a material level switch for monitoring the working condition of the bin, when the material level reaches a high limit value, a buffer kettle discharge valve is interlocked to be closed, discharging is stopped, and alarm is triggered, the weighing and packaging system 6 is one of a semi-automatic weighing and packaging system and a full-automatic weighing and packaging system, the weighing and packaging system 6 adopts the full-automatic weighing and packaging system, the full-automatic weighing and packaging system realizes full-automatic control from the bin to stacking through control of a P L C control system, weighing is realized through a weighing belt scale, other weighing devices can be adopted for replacement, after a packaging bag or a barrel is hung by the automatic weighing and packaging system, the discharge valve of the bin is opened for discharging and weighing, after the packaging is completed, automatic bag-removing and conveying is carried out.

The electric control system comprises a low-voltage power distribution cabinet, a P L C control cabinet and a field operation station, the electric control system adopts a P L C control cabinet to form a P L C control system, the P L C control system adopts a controller to realize centralized monitoring and control of units such as driving parts, instruments and valves in the production process, and realizes the functions of automatic control, interlocking, real-time monitoring, alarm information processing and historical trend analysis of the whole set of device according to program logic, the electric control system has two modes, and the overhaul mode and the working mode can be selected through a knob on the operation station:

in the maintenance mode state:

the temperature, the pressure and the liquid level in the concentration kettle 7 are displayed on site and remotely transmitted to a P L C control system, an alarm threshold value is monitored and set through an operation station panel, and an alarm is triggered when the alarm threshold value reaches a high limit value;

the temperature and the liquid level of the buffer kettle 9 are displayed on site and signals are transmitted to a P L C control system remotely, an alarm threshold value is monitored and set through an operation station panel, and an alarm is triggered when the alarm threshold value reaches a high limit value;

the temperature and the pressure of the circulating water in the circulating water cooling system 17 are displayed on site and signals are transmitted to a P L C control system remotely, an alarm threshold value is monitored and set through an operation station panel, and an alarm is triggered when the alarm threshold value reaches a high limit value;

the air escape valve, the feeding valve, the discharging valve and the steam valve on the concentration kettle 7 can be controlled to be opened and closed through the display buttons on the panel of the operation station;

the steel belt machine 21 can be controlled to start and stop by a display button of a panel of the operation station, the rotating speed is regulated by a speed regulator on the operation station, and the steel belt machine automatically stops and cannot be started again when an emergency stop signal, a steel belt machine deviation alarm signal or a steel belt machine frequency converter fault signal is triggered until the alarm signal is removed; when the frequency converter triggers a fault signal, the panel of the operation station displays a fault reset button, and the corresponding fault frequency converter can be reset by clicking the button;

the crusher 16, the cooling fan 13, the smoke-removing induced draft fan, the smoke-removing water pump and the dust-removing induced draft fan can be controlled to start and stop by a panel display button of the operation station, and stop when an emergency stop signal or a corresponding motor fault signal is triggered;

when the alarm signal is triggered, the panel of the operation station can display the button for silencing and confirming the alarm.

In the working mode state:

the temperature, the pressure and the liquid level of the concentration kettle 7 are displayed on site and remotely transmitted to a P L C control system, an alarm threshold value is monitored and set through an operation station panel, and an alarm is triggered when the alarm threshold value reaches a high limit value;

the temperature and the liquid level of the buffer kettle 9 are displayed on site and signals are transmitted to a P L C control system remotely, an alarm threshold value is monitored and set through an operation station panel, and an alarm is triggered when the alarm threshold value reaches a high limit value;

the temperature and the pressure of the circulating water in the circulating water cooling system 17 are displayed on site and signals are transmitted to a P L C control system remotely, an alarm threshold value is monitored and set through an operation station panel, and an alarm is triggered when the alarm threshold value reaches a high limit value;

the air escape valve of the concentration kettle 7 can be controlled to be opened and closed through a panel display button of the operation station;

the steam valve of the concentration kettle 7 can be controlled to be opened and closed through a display button of an operation station panel, and the valve is automatically closed and cannot be opened again when an alarm signal corresponding to the kettle temperature high limit is triggered until the alarm signal is released;

the feeding valve of the concentration kettle 7 can be controlled to be opened and closed through a display button of an operation station panel, when the corresponding kettle discharge valve is opened, the feeding valve cannot be opened at the same time, and when the corresponding kettle liquid level high limit alarm signal is triggered, the valve is automatically closed and cannot be opened again until the alarm signal is removed;

the feed valve of the buffer kettle 9 can be controlled to be opened and closed through a display button of an operation station panel, and the valve is automatically closed and cannot be opened again when an alarm signal corresponding to the kettle liquid level upper limit is triggered until the alarm signal is released;

the discharge valve of the concentration kettle 7 can be controlled to be opened and closed through a display button of an operation station panel, and the discharge valve cannot be opened simultaneously when the corresponding kettle feed valve is opened;

the discharge valve of the buffer kettle 9 can be controlled to be opened and closed by a display button of an operation station panel, and the discharge valve of the buffer kettle cannot be opened when the steel belt machine, the crusher or the elevator is not started;

the steel belt machine 21 can be controlled to start and stop by a display button of an operation station panel, the rotating speed is regulated by a speed regulator on a box body of the operation station, the steel belt machine automatically stops and cannot be started again when an emergency stop signal, a steel belt machine deviation alarm signal or a steel belt machine frequency converter fault signal is triggered until the alarm signal is relieved, when the frequency converter triggers the fault signal, the operation station panel displays a fault reset button, and the corresponding fault frequency converter can be reset by clicking the button;

the crusher 16, the cooling fan 13, the smoke-removing induced draft fan, the smoke-removing water pump and the dust-removing induced draft fan can be controlled to start and stop by a panel display button of the operation station, and stop when an emergency stop signal or a corresponding motor fault signal is triggered;

when the alarm signal is triggered, the sound can be reduced through the display button of the panel of the operation station, and the alarm is confirmed;

when the alarm signal is triggered and the operation violating the control logic is carried out, the panel of the operation station can prompt relevant error information.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.