CN116832896A

CN116832896A - Energy-saving multi-stage crushing equipment and using method thereof

Info

Publication number: CN116832896A
Application number: CN202310973895.6A
Authority: CN
Inventors: 李东水; 李梦华; 史晓刚; 张丰元
Original assignee: Siziwang Banner Shengxin Mining Co ltd
Current assignee: Siziwang Banner Shengxin Mining Co ltd
Priority date: 2023-08-04
Filing date: 2023-08-04
Publication date: 2023-10-03

Abstract

The invention discloses energy-saving type multistage crushing equipment and a use method thereof, wherein the energy-saving type multistage crushing equipment comprises a main bracket and further comprises: the ore screening mechanism is used for delivering smaller-granularity ore from a first feeding port and delivering larger-granularity ore from a second feeding port, the second feeding port is connected with the secondary crushing mechanism, and the conveying mechanism is arranged at the lower ends of the first feeding port and the discharging port of the secondary crushing mechanism. According to the invention, through the combination of multistage crushing and ore screening, ore particles can be effectively classified, so that energy is more effectively utilized, and ores can be more effectively treated in the crushing of the next stage, thereby reducing energy waste.

Description

Energy-saving multi-stage crushing equipment and using method thereof

Technical Field

The invention relates to the technical field of ore crushing devices, in particular to energy-saving multi-stage crushing equipment and a using method thereof.

Background

The full process flow of fluorite ore production comprises eight steps of ore exploitation and ore crushing, ore mineralization treatment, fluorite floatation, fluorite concentrate treatment, fluorite ore acidification, fluorite ore sintering, fluorite product processing and the like, wherein the ore crushing refers to crushing of massive ores to obtain ores with proper granularity, a crusher is needed to be used in an ore crushing link, a set of efficient crusher can greatly reduce energy waste and consumption, and the crushers used in the industry currently comprise: jaw crushers, cone crushers, impact crushers, hammer crushers, and the like. In general, the ore needs to be crushed for many times to meet the production requirement, and this makes it necessary to use multiple crushing devices to crush in the actual crushing process, so as to obtain the ore with a proper granularity, in the prior art, the ore needs to be put into a primary crusher in turn to crush, and then the crushed ore is transported to a secondary crusher to be crushed into a smaller granularity.

In the prior art, a large amount of energy is required to be consumed when ore is crushed to convey the ore to different crushers, so that a large amount of energy is wasted, the crushing efficiency is relatively low, and when the water content in the ore is relatively high, the crushers are easy to block, so that the production progress is influenced.

Disclosure of Invention

Based on the technical problems that the crushing equipment in the prior art is low in efficiency and consumes a large amount of energy sources when crushing ores, the application provides energy-saving multi-stage crushing equipment and a using method thereof.

The technical scheme adopted by the application is as follows: an energy-saving multistage crushing device, comprising a main support, further comprising: locate primary broken mechanism, secondary broken mechanism, ore screening mechanism and the conveying mechanism of main support, primary broken mechanism locates the top of secondary broken mechanism, pass through between the discharge gate of primary broken mechanism and the feed inlet of secondary broken mechanism ore screening mechanism intercommunication, ore screening mechanism includes first pay-off mouth and second pay-off mouth, ore screening mechanism is used for sending out less granularity's ore from first pay-off mouth and sends out bigger granularity's ore from the second pay-off mouth, the second pay-off mouth with secondary broken mechanism connects, conveying mechanism locates first pay-off mouth with the lower extreme of the discharge gate of secondary broken mechanism.

Further, the energy-saving multistage crushing equipment further comprises a dust removing mechanism arranged on the main support, the ore screening mechanism comprises a communicating main pipe, an air outlet is formed in the pipe wall of the communicating main pipe, and the dust removing mechanism is connected to the air outlet.

Further, the energy-saving multistage crushing equipment further comprises a drying mechanism arranged on the main support, an air inlet is formed in the communicating main pipe, and the drying mechanism is communicated with the air inlet and used for conveying hot air to the air inlet.

Further, the ore screening mechanism further comprises a vibrating folding baffle assembly arranged inside the main communicating pipe, the folding baffle assembly comprises at least one first baffle and at least one second baffle, the first baffle is arranged on one side of the main communicating pipe, the second baffle is arranged on the other side of the main communicating pipe, the first baffle and the second baffle are sequentially arranged at intervals in the height direction of the main communicating pipe, the first baffle and the second baffle incline downwards from the connecting end of the main communicating pipe to the extending end, a first through opening is formed between the extending end of the first baffle and the inner wall of the main communicating pipe, a second through opening is formed between the extending end of the second baffle and the inner wall of the main communicating pipe, and the second baffle completely covers the first through opening and the first baffle completely covers the second through opening.

Further, the first baffle and the second baffle are provided with sieve holes allowing the ore with smaller granularity to pass through, and the first feeding port is arranged right below the communicating main pipe.

Further, the drying mechanism comprises an air supply pipe and a fan, the air supply pipe comprises at least two air collecting ends and an air exhaust end, the air exhaust end is communicated with the air inlet, a motor outer cover is arranged on the air collecting end, and the motor outer cover is arranged on the outer side of a motor of the primary crushing mechanism or a motor of the secondary crushing mechanism and used for collecting hot air exhausted during operation of the motor.

Further, the drying mechanism further comprises a heater, the heater comprises a heating pipeline communicated with the air supply pipe, and a switch valve is arranged on the heating pipeline.

Further, the primary crushing mechanism includes: the crushing device comprises a first fixing frame, a second fixing frame and a first crushing device, wherein a first crushing cavity is arranged in the first fixing frame, the upper end of the first crushing cavity is a feed inlet, and the lower end of the first crushing cavity is a discharge outlet; the crushing assembly is arranged in the first crushing cavity and comprises a fixed jaw plate and a movable jaw plate, the fixed jaw plate and the movable jaw plate are oppositely arranged to form a space with wide upper part and narrow lower part, and the opposite surfaces of the fixed jaw plate and the movable jaw plate are wave lines; the driving assembly comprises a first power source, a first output shaft, an eccentric shaft sleeve, a driving part, a driven part and a connecting rod, wherein the driving part is arranged on the upper portion of the movable jaw plate, the driven part is arranged on the lower portion of the movable jaw plate, the first output shaft is connected with the first power source and rotationally arranged in the driving part, the eccentric shaft sleeve is sleeved between the first output shaft and the driving part, one end of the connecting rod is rotationally connected with the driven part, and the other end of the connecting rod is rotationally connected with the inner wall of the first crushing cavity.

Further, the secondary crushing mechanism includes: the second fixing frame is provided with a second crushing cavity, the upper end of the second crushing cavity is a feed inlet, and the lower end of the second crushing cavity is a discharge outlet; the second power source comprises a second output shaft, a plate hammer assembly is arranged on the second output shaft, and the plate hammer assembly is arranged in the second crushing cavity; the impact plate assembly is arranged in the second crushing cavity and is positioned at the steering side of the second output shaft of the feed inlet, the impact plate assembly comprises an impact plate and a pull rod, one end of the impact plate is rotationally connected with the second crushing cavity, the pull rod is abutted against the back of the other end of the impact plate, the pull rod penetrates through the inside and the outside of the second crushing cavity, a spring is sleeved on the part of the pull rod, which is positioned outside the second crushing cavity, a clamping plate is arranged on the pull rod, a sleeve is further connected outside the second crushing cavity, a bottom plate is arranged at one end, which is far away from the second crushing cavity, of the sleeve, the pull rod and the clamping plate are both arranged in the sleeve, and the spring is arranged between the bottom plate and the clamping plate; the cylinder is arranged on the main support, and the telescopic end of the cylinder is in butt joint with the second crushing cavity relative to the outside of the impact plate assembly.

A method of using an energy-efficient multi-stage crushing apparatus, the method comprising:

step S1, conveying ore raw materials to a primary crushing mechanism for crushing operation;

s2, screening the ore crushed by the primary crushing mechanism through an ore screening mechanism, enabling the ore to pass through a folding baffle assembly of the ore screening mechanism from top to bottom, enabling the ore with smaller granularity to pass through a sieve hole on the folding baffle assembly under the vibration effect of the ore passing through the folding baffle assembly and directly enter a first feeding port, enabling the ore with larger granularity to be fed into a second feeding port through the folding baffle assembly for continuous crushing, and extracting dust through a dust removing mechanism when the ore passes through the folding baffle assembly, so that subdivision of the ore is reduced, and recovery rate of the ore is increased;

s3, when the water content in the ore is detected to be higher, starting a drying mechanism to supply hot air into the ore screening mechanism, collecting hot air generated by motors of the primary crushing mechanism and the secondary crushing mechanism by the drying mechanism, conveying the hot air to the ore screening mechanism, dehumidifying the ore passing through the ore screening mechanism while removing dust, and when the temperature of the hot air conveyed by the drying mechanism is detected to be lower than a preset value, conveying the hot air collected by the motors into a heater, heating and conveying the hot air to the ore screening mechanism for drying;

And S4, conveying the crushed ore with smaller granularity through the primary crushing mechanism into the conveying mechanism through the first feeding port after dust removal or drying, and conveying the crushed ore through the secondary crushing mechanism into the conveying mechanism.

Compared with the prior art, the invention adopts the design of the multistage crushing mechanism, the primary crushing mechanism and the secondary crushing mechanism work cooperatively, ores can be crushed more fully and are crushed into smaller particles, so that the crushing efficiency of the ores can be improved, the energy waste in the crushing process is reduced, the traditional crushing equipment usually consumes a large amount of energy in the primary crushing process, the ore particles can be effectively classified by the combination of multistage crushing and ore screening, so that the energy can be more effectively utilized, the ores can be more effectively processed in the crushing of the next stage, the energy waste is reduced, the ores with different particle sizes can be separated by the design of the ore screening mechanism, the ores with smaller particle sizes are discharged from the first feeding port, the ores with larger particle sizes are discharged from the second feeding port, and the fine classification of the ores can be further realized, so that the different technological requirements are met. At the same time, finely divided ore can be better processed and utilized in the next step. The equipment provided by the invention realizes smooth conveying and processing of ores through reasonable structural design, including the arrangement of the main support, the conveying mechanism and the like. The ores are reasonably transmitted and separated in the crushing mechanisms at different levels, so that the problems of blockage, clamping grooves and the like are reduced, and the stability and the reliability of the equipment are improved. The energy-saving type multistage crushing equipment can be flexibly adjusted and expanded according to the characteristics and process requirements of different ores, and the crushing level can be increased or reduced according to specific conditions, so that the setting of an ore screening mechanism is adjusted to achieve the optimal crushing effect and energy utilization rate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic plan view of an energy-saving multistage crushing apparatus according to the present invention;

FIG. 2 is a schematic cross-sectional view of an energy-saving multi-stage crushing apparatus according to the present invention;

FIG. 3 is a schematic cross-sectional view of a primary crushing structure according to the present invention;

FIG. 4 is a schematic cross-sectional view of a secondary crushing structure according to the present invention;

FIG. 5 is a schematic cross-sectional view of the right side view of the ore screening mechanism of the present invention;

FIG. 6 is a schematic view of the internal structure of the ore screening mechanism of the present invention;

fig. 7 is a schematic plan view of an energy-saving type multistage crushing apparatus having a drying mechanism according to the present invention;

fig. 8 is a connection block diagram of an energy-saving type multi-stage crushing apparatus having a drying mechanism in the present invention;

fig. 9 is a flow chart of a method of using the crushing plant of the present invention.

1. A main support; 2. a primary crushing mechanism; 21. a first fixing frame; 23. a first crushing chamber; 24. a fixed jaw plate; 25. a swing jaw plate; 26. a first power source; 27. a first output shaft; 28. an eccentric shaft sleeve; 29. an active part; 20. a driven part; 22. a connecting rod; 3. a secondary crushing mechanism; 31. the second fixing frame; 311. a second crushing chamber; 32. a second power source; 34. a second output shaft; 35. a plate hammer assembly; 37. a counterattack plate; 38. a pull rod; 39. a spring; 381. a clamping plate; 36. a sleeve; 4. a cylinder; 5. an ore screening mechanism; 51. a communicating main pipe; 52. an air outlet; 53. a discharge branch pipe; 54. folding the baffle assembly; 541. a first baffle; 542. a second baffle; 55. a sieve pore; 56. an air inlet; 57. a first feed port; 58. a second feeding port; 6. a conveying mechanism; 7. a dust removing mechanism; 8. a drying mechanism; 81. an air supply pipe; 83. a motor housing; 84. an exhaust end; 85. a heater; 86. and heating the pipeline.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1 and 2, the application provides an energy-saving multistage crushing device, which comprises a main bracket 1, a primary crushing mechanism 2, a secondary crushing mechanism 3, an ore screening mechanism 5 and a conveying mechanism 6, wherein the primary crushing mechanism 2 is arranged above the secondary crushing mechanism 3, a discharge hole of the primary crushing mechanism 2 is communicated with a feed hole of the secondary crushing mechanism 3 through the ore screening mechanism 5, the ore screening mechanism 5 comprises a first feed hole 57 and a second feed hole 58, the ore screening mechanism 5 is used for feeding ore with smaller granularity from the first feed hole 57 and ore with larger granularity from the second feed hole 58, the second feed hole 58 is connected with the secondary crushing mechanism 3, the conveying mechanism 6 is arranged at the lower ends of the first feed hole 57 and the discharge hole of the secondary crushing mechanism 3, ore is conveyed into the primary crushing mechanism 2 and is crushed into ore with different particle sizes roughly, a discharge hole of the primary crushing mechanism 2 is communicated with the ore screening mechanism 5, the ore screening mechanism 5 discharges ore with smaller particle size from the first feeding hole 57 according to the particle size, ore with larger particle size is discharged from the second feeding hole 58, the ore with larger particle size enters the secondary crushing mechanism 3 through the ore screening mechanism 5 for further crushing and thinning, the design of the secondary crushing mechanism 3 can be adjusted according to the requirement of ore treatment with different particle sizes, crushed ore is smoothly discharged from the discharge hole of the secondary crushing mechanism 3 to complete the whole crushing process, and the conveying mechanism 6 is arranged below the whole crushing mechanism to collect and convey ore with smaller particle size outwards.

By adopting the design of the multi-stage crushing mechanism, the primary crushing mechanism 2 and the secondary crushing mechanism 3 work cooperatively, ores can be crushed more fully and are crushed into smaller particles, so that the crushing efficiency of the ores can be improved, the energy waste in the crushing process is reduced, a large amount of energy is consumed in the primary crushing process by the traditional crushing equipment, the ore particles can be effectively classified by the combination of multi-stage crushing and ore screening, so that the energy is more effectively utilized, the ores can be more effectively treated in the crushing of the next stage, the energy waste is reduced, the ores with different particle sizes can be separated by the design of the ore screening mechanism 5, the ores with smaller particle sizes are discharged from the first feeding port 57, the ores with larger particle sizes are discharged from the second feeding port 58, and the fine classification of the ores can be further realized, so that different process requirements are met. At the same time, finely divided ore can be better processed and utilized in the next step. The equipment provided by the invention realizes smooth conveying and processing of ores through reasonable structural design and the arrangement of the main support 1, the conveying mechanism 6 and the like. The ores are reasonably transmitted and separated in the crushing mechanisms at different levels, so that the problems of blockage, clamping grooves and the like are reduced, and the stability and the reliability of the equipment are improved. The energy-saving type multi-stage crushing equipment can be flexibly adjusted and expanded according to the characteristics and process requirements of different ores, and the crushing level can be increased or reduced according to specific conditions, so that the setting of the ore screening mechanism 5 is adjusted to achieve the optimal crushing effect and energy utilization rate.

Preferably, referring to fig. 3, the primary crushing mechanism 2 in the present application adopts a jaw crusher, the primary crushing mechanism 2 includes a first fixing frame 21, a crushing assembly, and a driving assembly, the driving assembly includes a first power source 26, a first output shaft 27, an eccentric sleeve 28, a driving portion 29, a driven portion 20, and a connecting rod 22, the driving portion 29 is disposed on an upper portion of the movable jaw 25, the driven portion 20 is disposed on a lower portion of the movable jaw, the first output shaft 27 is connected to the first power source 26 and is rotatably disposed in the driving portion 29, the eccentric sleeve 28 is sleeved between the first output shaft 27 and the driving portion 29, one end of the connecting rod 22 is rotatably connected to the driven portion 20, and the other end is rotatably connected to an inner wall of the first crushing cavity 23.

The first fixing frame 21 is a main supporting structure of the crushing mechanism, and is arranged on the main support 1 and used for supporting the primary crushing mechanism 2, a first crushing cavity 23 is arranged in the first fixing frame 21, a feeding hole is formed in the upper end of the first crushing cavity 23 and used for inputting ore to be crushed, and a discharging hole is formed in the lower end of the first crushing cavity 23 and used for discharging crushed materials. This arrangement enables the material to be crushed and crushed gradually within the chamber by the action of the crushing assembly. The crushing assembly is a key part in the crushing mechanism and is arranged in the first crushing cavity 23, the crushing assembly consists of a fixed jaw plate 24 and a movable jaw plate 25, the fixed jaw plate 24 and the movable jaw plate 25 are oppositely arranged, a space with wide upper part and narrow lower part is formed between the fixed jaw plate 24 and the movable jaw plate 25, the surfaces of the fixed jaw plate 24 and the movable jaw plate 25 are designed into wave lines, so that the friction force of materials in the crushing process can be increased, the crushing effect is improved, and after the materials enter the crushing cavity, the materials are clamped in the fixed jaw plate 24 and the movable jaw plate 25 by the movement of the fixed jaw plate 24 and the movable jaw plate 25, and the materials are crushed and crushed by the pressure and the friction force.

The driving assembly is used for driving the crushing mechanism to operate and comprises a first power source 26, a first output shaft 27, an eccentric shaft sleeve 28, a driving part 29, a driven part 20 and a connecting rod 22, wherein the first power source 26 provides power, the power is transmitted to the driving part 29 through being connected with the first output shaft 27, the eccentric shaft sleeve 28 is sleeved between the first output shaft 27 and the driving part 29, the driving part 29 is positioned at the upper part of the movable jaw plate 25, the driven part 20 is positioned at the lower part of the movable jaw plate 25, the connecting rod 22 is connected with the driven part 20 and the inner wall of the first crushing cavity 23, so that the driven part 20 can rotate along with the movement of the driving part 29, and the crushing assembly in the crushing cavity can generate periodical vibration movement through the driving mode, so that the crushing and crushing of materials are realized.

In the whole, the primary crushing mechanism 2 realizes the crushing and crushing of materials through the connection mode and the working principle among the components, after the materials are input from the feed inlet, the materials are clamped between the fixed jaw plate 24 and the movable jaw plate 25, the materials are crushed and crushed under the action of the crushing assembly, the driving assembly provides power, the crushing assembly generates vibration motion through the rotation of the connecting rod 22, the crushing effect of the materials is further promoted, and finally, the crushed materials are discharged from the discharge outlet.

Further, referring to fig. 4, the secondary crushing mechanism 3 of the present application adopts an impact crusher, the secondary crushing mechanism 3 specifically includes a second fixing frame 31, an impact plate 37 assembly, a cylinder 4 and a pull rod 38, wherein the second fixing frame 31 is a main supporting structure of the secondary crushing mechanism 3, the second fixing frame 31 is installed on the main bracket 1 and is used for fixedly supporting the whole machine of the secondary crushing mechanism 3, the second fixing frame 31 is provided with a second crushing cavity 311, the upper end of the second crushing cavity 311 is a feeding hole and is used for inputting materials to be crushed, the lower end is a discharging hole and is used for discharging crushed materials, the layout is that the materials can be crushed again in the cavity through a crushing assembly below, the second power source 32 is a component for driving the secondary crushing mechanism 3 to operate, the impact plate comprises a second output shaft 34 and a plate hammer assembly 35, the plate hammer assembly 35 is arranged in the second output shaft 34, the plate hammer assembly 35 is positioned in the second crushing cavity 311, the plate hammer assembly 35 is formed by a series of plates for impacting and crushing the materials; the reaction plate 37 assembly is located in the second crushing cavity 311, the steering side of the second output shaft 34 near the feed inlet comprises a reaction plate 37 and a pull rod 38, one end of the reaction plate 37 is rotationally connected with the second crushing cavity 311, the pull rod 38 is propped against the back of the other end of the reaction plate 37, the pull rod 38 penetrates through the inside and the outside of the second crushing cavity 311, a spring 39 is sleeved on the part outside the second crushing cavity 311, a clamping plate 381 is arranged on the pull rod 38 and used for fixing the position between the pull rod 38 and the second crushing cavity 311, a sleeve 36 is connected outside the second crushing cavity 311, a bottom plate is arranged at one end of the sleeve 36 far away from the second crushing cavity 311, both the pull rod 38 and the clamping plate 381 are arranged in the sleeve 36, and the spring 39 is arranged between the bottom plate and the clamping plate 381, so that the reaction plate 37 can interact with the pull rod 38 and buffer impact force through the rebound of the spring 39 when materials are impacted.

The cylinder 4 is mounted on the main support 1, the telescopic end of the cylinder is opposite to the second crushing cavity 311, and the cylinder 4 is used for providing pressure, so that the impact plate 37 assembly in the second crushing cavity 311 can perform telescopic movement when required, and adapt to different crushing requirements or adjust the working state of the crusher.

Through the connected mode and the theory of operation of above-mentioned subassembly, secondary breaker 3 can continue to carry out crushing and crushing to the material, and after the material got into the broken chamber 311 of second from the feed inlet, received the striking and the breakage of board hammer subassembly 35, and the while counterattack board 37 subassembly is through the cooperation with pull rod 38 and cylinder 4, can adapt to different crushing demands to provide the reaction force, improve crushing effect. Finally, the crushed material is discharged from the discharge hole.

Further, referring to fig. 1, 2, 5 and 6, the ore screening mechanism 5 includes a communicating main pipe 51 and two discharging branch pipes 53, the upper end of the communicating main pipe 51 is communicated with the discharging port of the primary crushing mechanism 2, and two discharging branch pipes 53 are respectively arranged at the lower end of the communicating main pipe 51, the two discharging branch pipes 53 branch the pipeline of the communicating main pipe 51, the lower end of one discharging branch pipe 53 is a first discharging port, the lower end of the other discharging branch pipe 53 is a second feeding port 58, the conveying mechanism 6 is opposite to the lower end of the first discharging port, the first discharging port is used for conveying ores with smaller granularity, and the ores with smaller granularity fall onto the conveying mechanism 6 for conveying; the second discharging hole is used for conveying ores with larger granularity, the ores with larger granularity are conveyed to the feeding hole of the secondary crushing mechanism 3 for secondary crushing, and the lower end of the discharging hole of the secondary crushing mechanism 3 is also opposite to the conveying mechanism 6, so that the ores crushed by the secondary crushing mechanism 3 are conveyed through the conveying mechanism 6, the multistage crushing, screening and conveying processes of the ores can be completed in one step in such a way, the crushing process of the ores is greatly simplified, equipment is better utilized, resource allocation is optimized, and production efficiency is improved.

The ore screening mechanism 5 is mainly used for screening the ore crushed by the primary crushing mechanism 2, so that the ore with smaller granularity meeting the requirement is conveyed to the next process step, and the ore with larger granularity is continuously crushed into the ore with smaller granularity, the ore screening mechanism 5 integrally adopts a vertically distributed pipeline structure for screening, and a specific screening mechanism is arranged inside the communicating main pipe 51 and the discharging branch pipe 53 and is used for screening the ore, and the specific screening structure is as follows: the inside of the communicating main pipe 51 is provided with a folding baffle assembly 54, the folding baffle assembly 54 itself can vibrate, the folding baffle assembly 54 is composed of at least one first baffle 541 and at least one second baffle 542, the first baffle 541 is located at one side of the communicating main pipe 51, the second baffle 542 is located at the other side of the communicating main pipe 51 and is arranged at intervals in the height direction of the communicating main pipe 51, the first baffle 541 and the second baffle 542 are inclined downwards from the connecting end to the extending end, and form a certain inclination angle with each other, a space called a first through opening is formed between the extending end of the first baffle 541 and the inner wall of the communicating main pipe 51, a space called a second through opening is formed between the extending end of the second baffle 542 and the inner wall of the communicating main pipe 51, the second baffle 542 completely covers the first through opening, the first baffle 541 completely covers the second through opening, the first baffle 541 and the second baffle 542 are provided with the sieve holes 55 allowing the smaller-sized ore to pass through, and the first feed port 57 is arranged under the communicating main pipe 51, so that natural sieving of the ore under vibration can be realized, when the ore passes through the ore sieving mechanism 5, the larger-sized ore is blocked by the first baffle 541 and the second baffle 542 and continuously discharged downwards through the first through-hole and the second through-hole, the downward movement stroke of the ore is enlarged due to the blocking effect of the folding baffle assembly 54 during the downward movement of the ore, the smaller-sized ore and the larger-sized ore can be well sieved due to the vibration effect of the folding baffle assembly 54 during the downward movement of the ore, the smaller-sized ore can directly pass through the sieve holes 55 and directly pass through the folding baffle assembly 54 downwards to the upper part of the discharge branch pipe 53, but the ore of great granularity then needs to roll over on the baffle subassembly 54 to slow motion downwards, through this kind of mode then can be better with different granularity ores screening, less granularity ore obtains abundant screening, improves screening efficiency.

Further, the discharge branch pipe 53 provided with the first discharge port is provided at the right lower end of the communicating main pipe 51, and a screen is provided at the connection end of the discharge branch pipe 53 and the communicating main pipe 51, the screen only allows the ore with smaller granularity to pass through and enter the discharge branch pipe 53, but rejects the ore with larger granularity to pass through, so the ore screened by the folding baffle assembly 54 naturally falls onto the screen first, and screening is performed again, so that the ore with smaller granularity finally falls onto the conveying mechanism 6 through the first discharge port. While ore with larger granularity continues to flow down into the other discharge branch 53 and finally into the secondary crushing mechanism 3 for secondary crushing. This design of the deflector assembly 54 allows for more efficient and accurate ore screening while avoiding mixing of excessively coarse or fine ore and improving the accuracy and effectiveness of the screening.

It is noted that the baffle assembly of the present invention can add more baffles as needed to further control the separation effect of the ore. Meanwhile, the inclination angle and vibration parameters of the baffles can be selected according to specific selection, and as the baffles are communicated with the main communication pipe 51 and generate certain vibration in the running process of the motor of the crushing mechanism, the baffles can be synchronously driven to vibrate, so that a vibration device is not required to be additionally arranged, equipment resources can be fully utilized, the originally useless energy can be recycled, and better screening effect is brought.

Further, the energy-saving multi-stage crushing equipment further comprises a dust removing mechanism 7 arranged on the main support 1, wherein an air outlet 52 and an air inlet 56 are formed in the pipe wall of the main pipe 51 communicated with the ore screening mechanism 5, coarse filter screens are arranged at the air outlet 52 and the air inlet 56, the coarse filter screens only allow fine dust to pass through, the dust removing mechanism 7 is connected to the outer side of the air outlet 52, dust in ore passing through the ore screening mechanism 5 can be removed by arranging the dust removing mechanism 7, and the fact that excessive fine powder possibly affects the follow-up steps or the quality of products is avoided; meanwhile, as the mobility of the materials is increased by excessive fine powder, the materials are more difficult to control and process in the conveying, storing and loading processes, dust pollution and energy waste are easy to generate, and the fluorite flotation process generally needs particles with moderate granularity, the latter flotation effect can be reduced by excessive fine powder, the recovery rate of ores is reduced, and meanwhile, dust is easy to generate in the conveying and processing processes by excessive fine powder, so that the sanitation and safety of the environment and workplace are influenced. The dust removing mechanism 7 in the application can well remove fine dust in the ore screening mechanism 5, effectively improve the occurrence of the problems, and can separate a large amount of fine dust from ore particles under the vibration action of the baffle plate, natural falling and baffling of the ore and other factors in the screening process of the ore screening mechanism 5, so that the dust removing efficiency is improved.

The multipole crushing device of the application comprises a primary crushing mechanism 2, a secondary crushing mechanism 3, a dust removing mechanism 7, an ore screening mechanism 5 and a conveying mechanism, and also comprises a drying mechanism 8, wherein the drying mechanism 8 is mainly used for drying ores, and referring to figures 7 and 8, wherein: the drying mechanism 8 comprises an air supply pipe 81, a heater 85, a heating pipeline 86, a switch valve and a fan, wherein the air supply pipe 81 comprises at least two air collecting ends and an air exhaust end 84, the air exhaust end 84 is communicated with the air inlet 56, so that hot air is supplied to the air inlet 56, continuously enters the ore screening mechanism 5 from the air inlet 56, dries ore in the ore screening mechanism 5, reduces the water content of the ore, can be the dust removing air of the dust removing mechanism 7, and can effectively reduce the water content entering the secondary crushing mechanism 3 through drying of the hot air.

The heater 85 comprises a heating pipeline 86 which is communicated with the air supply pipe 81, a switch valve is arranged on the heating pipeline 86, and the heater 85 and a heating pipeline are additionally arranged on the air supply pipe 81, so that when the temperature of hot air collected in a motor is insufficient for drying, the hot air can be sent to the heater 85 again for continuous heating and temperature rising, the drying effect of ores is ensured, and when the temperature of the hot air collected in the motor is sufficient for drying, the heating pipeline 86 is not opened, and the hot air is directly sent to the ore screening mechanism 5 for drying.

Further, the motor housing 83 may be designed on the gas collecting end, the motor housing 83 is covered on the outer side of the motor of the primary crushing mechanism 2 and the secondary crushing mechanism 3, the heat emitted by the motors during operation is recovered under the action of the fan, the fan can recover the heat of the motors during operation and introduce the recovered heat into the ore screening mechanism 5 through the exhaust end 84, and the heat emitted by the motors during operation can be effectively reduced.

The application designs the drying mechanism 8, the drying mechanism 8 can dry the ore which is subjected to primary crushing by introducing hot air, the problem that the crushing efficiency of the crushing equipment is reduced by the ore with high water content is avoided, and the beneficial effect is that: the moisture can form a thin water film on the surfaces of the ore particles, so that direct contact and collision between the ore particles and a crushing device are hindered, collision force and crushing capacity are weakened, the crushing effect is poor, longer crushing time and energy consumption are needed, high-water-content ore is easy to adhere to the inside of the crushing device, the device is blocked, in addition, the high-water-content ore can increase the energy consumption of the crushing device, and the viscosity of the ore is increased due to the moisture, so that the crushing device needs to consume more energy to overcome resistance and adhesion force in the crushing process, and the crushing process is more difficult; high moisture ores produce large amounts of fines during the crushing process. The impact force of crushing equipment on ore can be reduced by the water, so that the crushing effect is poor, excessive fine fragments and fine powder are generated, and the particle size distribution of the product is uneven; ores with high water content are easily accumulated and adhered inside crushing equipment, and the maintenance difficulty and frequency of the equipment are increased. The reason of moisture causes the ore to bond in equipment, blocks up discharge gate and feed inlet easily, reduces the throughput and the operating efficiency of equipment. Therefore, the ore crushed by the primary crushing mechanism 2 is dried, the water content of the ore is reduced, and the condition that the crushing efficiency and the damage to the secondary crushing mechanism 3 are affected due to the fact that the water content of the ore entering the secondary crushing mechanism 3 is too high is avoided.

In addition, the drying step is designed after primary crushing, because the primary crushing mechanism 2 adopts a jaw crusher, and the jaw crusher crushes harder materials, the materials are crushed through the relative compression and shearing force of the movable jaw plate 25, the crushed materials are more blocky particles, the method is suitable for preparing middle coarse crushing products or larger-size products, more blocky particles or middle coarse crushing products can be obtained, meanwhile, due to the working mechanism of the jaw crusher, the influence of the excessive water content of the ore on the jaw crusher is small, generally, the blockage cannot occur, the working efficiency of the jaw crusher cannot be greatly influenced, but the ore after primary crushing is crushed into a plurality of small blocks, so that the contact area between the ore and air is increased, and the ore is dried in the time, so that the effect is optimal; in addition, the secondary crushing mechanism 3 adopts an impact crusher, the structure of the impact crusher is relatively complex, and the impact crusher is easier to block due to the too high water content in the ore, so that the secondary crushing mechanism 3 can be effectively reduced in moisture entering the secondary crushing mechanism 3 when the ore screening mechanism 5 screens the ore, and the secondary crushing mechanism 3 is prevented from being blocked and damaged.

The combination of drying and dust removal has the following advantages: the water content in the ore is reduced, so that fine dust is more easily sucked, the coarse filter screen is not blocked by the fine dust, and the fine dust can bring good effects for dedusting, drying, crushing and subsequent processes.

Further, the present application further provides a method for using the energy-saving multi-stage crushing apparatus, as can be seen from fig. 9, the method for using the energy-saving multi-stage crushing apparatus includes: step S1, conveying ore raw materials to a primary crushing mechanism 2 for crushing operation;

s2, screening the ore crushed by the primary crushing mechanism 2 through the ore screening mechanism 5, enabling the ore to pass through the folding baffle assembly 54 of the ore screening mechanism 5 from top to bottom, enabling the ore passing through the folding baffle assembly 54 to pass through the sieve holes 55 on the folding baffle assembly 54 under the vibration effect and directly enter the first feeding port 57, enabling the ore with larger granularity to pass through the folding baffle assembly 54 and be fed into the second feeding port 58 for continuous crushing, and pumping dust out through the dust removing mechanism 7 when the ore passes through the folding baffle assembly 54, so that the subdivision of the ore is reduced, and the recovery rate of the ore is increased;

Step S3, when the water content in the ore is detected to be higher, starting a drying mechanism 8 to supply hot air into the ore screening mechanism 5, collecting and conveying hot air generated by motors of the primary crushing mechanism 2 and the secondary crushing mechanism 3 to the ore screening mechanism 5 by the drying mechanism 8, dehumidifying the ore passing through the ore screening mechanism 5 while removing dust, and when the temperature of the hot air conveyed by the drying mechanism 8 is detected to be lower than a preset value, conveying the hot air collected by the motors into a heater 85, heating and conveying the hot air to the ore screening mechanism 5 for drying;

and S4, the ore with smaller granularity crushed by the primary crushing mechanism 2 is conveyed into the conveying mechanism 6 through the first feeding port 57 for conveying after dust removal or drying, and the ore crushed by the secondary crushing mechanism 3 is conveyed into the conveying mechanism 6 for conveying.

Dust collection in the ore passing through the ore screening mechanism 5 can be pumped out through the dust collection mechanism 7, so that excessive fine powder is prevented from possibly affecting the follow-up steps or the quality of products; meanwhile, as the mobility of the materials is increased by excessive fine powder, the materials are more difficult to control and process in the conveying, storing and loading processes, dust pollution and energy waste are easy to generate, and the fluorite flotation process generally needs particles with moderate granularity, the latter flotation effect can be reduced by excessive fine powder, the recovery rate of ores is reduced, and meanwhile, dust is easy to generate in the conveying and processing processes by excessive fine powder, so that the sanitation and safety of the environment and workplace are influenced. The dust removing mechanism 7 in the application can well remove fine dust in the ore screening mechanism 5, effectively improve the occurrence of the problems, and can separate a large amount of fine dust from ore particles under the vibration action of the baffle plate, natural falling and baffling of the ore and other factors in the screening process of the ore screening mechanism 5, so that the dust removing efficiency is improved. The drying mechanism 8 can dry the ore subjected to primary crushing by introducing hot air, so that the problem that the crushing efficiency of the crushing equipment is reduced due to the high-water-content ore is avoided. Therefore, the ore crushed by the primary crushing mechanism 2 is dried, the water content of the ore is reduced, and the condition that the crushing efficiency and the damage to the secondary crushing mechanism 3 are affected due to the fact that the water content of the ore entering the secondary crushing mechanism 3 is too high is avoided. The combination of drying and dust removal can also reduce the water content in the ore, so that fine dust is more easily sucked, and the fine dust can not agglomerate to block the coarse filter screen, so that the fine dust can bring good effects for dust removal, drying, crushing and subsequent processes.

The foregoing description of the preferred embodiment of the invention is not intended to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims

1. Energy-saving multistage crushing equipment, including main support (1), characterized by still includes: the ore screening device comprises a primary crushing mechanism (2), a secondary crushing mechanism (3), an ore screening mechanism (5) and a conveying mechanism (6), wherein the primary crushing mechanism (2) is arranged above the secondary crushing mechanism (3), a discharge hole of the primary crushing mechanism (2) is communicated with a feed hole of the secondary crushing mechanism (3) through the ore screening mechanism (5), the ore screening mechanism (5) comprises a first feed hole (57) and a second feed hole (58), the ore screening mechanism (5) is used for feeding ore with smaller granularity out of the first feed hole (57) and ore with larger granularity out of the second feed hole (58), the second feed hole (58) is connected with the secondary crushing mechanism (3), and the conveying mechanism (6) is arranged at the lower ends of the first feed hole (57) and the discharge hole of the secondary crushing mechanism (3).

2. The energy-saving multistage crushing device according to claim 1, further comprising a dust removing mechanism (7) arranged on the main support (1), wherein the ore screening mechanism (5) comprises a communicating main pipe (51), an air outlet (52) is arranged on the pipe wall of the communicating main pipe (51), and the dust removing mechanism (7) is connected to the air outlet (52).

3. The energy-saving multistage crushing device according to claim 2, further comprising a drying mechanism (8) arranged on the main support (1), wherein an air inlet (56) is arranged on the main communication pipe (51), and the drying mechanism (8) is connected with the air inlet (56) and is used for conveying hot air to the air inlet (56).

4. An energy-efficient multistage crushing plant according to claim 3, characterized in that the ore screening mechanism (5) further comprises a vibratable deflector assembly (54) provided inside the main communication pipe (51), the deflector assembly (54) comprising at least one first deflector (541) and at least one second deflector (542), the first deflector (541) being provided on one side of the main communication pipe (51), the second deflector (542) being provided on the other side of the main communication pipe (51), the first deflector (541) and the second deflector (542) being provided at intervals in sequence in the height direction of the main communication pipe (51), the first deflector (541) and the second deflector (542) being inclined downwards in the direction from the connecting end to the extending end of the main communication pipe (51), and the extending end of the first deflector (541) and the inner wall of the main communication pipe (51) forming a first overopening, the second deflector (542) being provided between the extending end of the second deflector (541) and the inner wall of the main communication pipe (51) and completely covering the first deflector (541).

5. An energy-efficient multistage crushing plant according to claim 4, characterized in that the first baffle (541) and the second baffle (542) are provided with mesh openings (55) allowing the smaller-sized ore to pass through, and the first feed port (57) is provided directly below the communicating main pipe (51).

6. An energy-saving multistage crushing apparatus according to claim 3, wherein the drying mechanism (8) comprises an air supply pipe (81) and a fan, the air supply pipe (81) comprises at least two air collecting ends and an air exhaust end (84), the air exhaust end (84) is communicated with the air inlet (56), a motor housing (83) is arranged on the air collecting end, and the motor housing (83) is arranged outside a motor of the primary crushing mechanism (2) or a motor of the secondary crushing mechanism (3) in a covering manner and is used for collecting hot air exhausted during motor operation.

7. The energy-saving multistage crushing apparatus according to claim 6, wherein the drying mechanism (8) further comprises a heater (85), the heater (85) comprises a heating pipeline (86) communicated with the air supply pipe (81), and an on-off valve is arranged on the heating pipeline (86).

8. Energy-efficient multi-stage crushing plant according to claim 1, characterized in that the primary crushing mechanism (2) comprises: the crushing device comprises a first fixing frame (21), wherein a first crushing cavity (23) is arranged in the first fixing frame (21), the upper end of the first crushing cavity (23) is a feed inlet, and the lower end of the first crushing cavity is a discharge outlet; the crushing assembly is arranged in the first crushing cavity (23), the crushing assembly comprises a fixed jaw plate (24) and a movable jaw plate (25), the fixed jaw plate (24) and the movable jaw plate (25) are oppositely arranged to form a space with wide upper part and narrow lower part, and the opposite surfaces of the fixed jaw plate (24) and the movable jaw plate (25) are wave lines; the driving assembly comprises a first power source (26), a first output shaft (27), an eccentric shaft sleeve (28), a driving part (29), a driven part (20) and a connecting rod (22), wherein the driving part (29) is arranged on the upper portion of the movable jaw plate (25), the driven part (20) is arranged on the lower portion of the movable jaw plate, the first output shaft (27) is connected with the first power source (26) and is rotationally arranged in the driving part (29), the eccentric shaft sleeve (28) is sleeved between the first output shaft (27) and the driving part (29), one end of the connecting rod (22) is rotationally connected with the driven part (20), and the other end of the connecting rod is rotationally connected with the inner wall of the first crushing cavity (23).

9. Energy-efficient multi-stage crushing plant according to claim 1, characterized in that the secondary crushing mechanism (3) comprises: the second fixing frame (31), the second fixing frame (31) is provided with a second crushing cavity (311), the upper end of the second crushing cavity (311) is a feed inlet, and the lower end is a discharge outlet; the second power source (32), the second power source (32) comprises a second output shaft (34), a plate hammer assembly (35) is arranged on the second output shaft (34), and the plate hammer assembly (35) is arranged in the second crushing cavity (311); the impact plate (37) component is arranged in the second crushing cavity (311) and positioned at the steering side of the second output shaft (34) of the feed inlet, the impact plate (37) component comprises an impact plate (37) and a pull rod (38), one end of the impact plate (37) is rotationally connected with the second crushing cavity (311), the pull rod (38) is abutted against the back of the other end of the impact plate (37), the pull rod (38) penetrates through the inside and the outside of the second crushing cavity (311), a spring (39) is sleeved on the part of the pull rod (38) positioned outside the second crushing cavity (311), a clamping plate (381) is arranged on the pull rod (38), a sleeve (36) is further connected outside the second crushing cavity (311), one end of the sleeve (36) away from the second crushing cavity (311) is provided with a bottom plate, the pull rod (38) and the clamping plate (381) are both arranged in the sleeve (36), and the spring (381) is arranged between the spring (381) and the bottom plate (39); the cylinder (4) is arranged on the main support (1), and the telescopic end of the cylinder (4) is in butt joint with the outer part of the second crushing cavity (311) relative to the impact plate (37) assembly.

10. A method of using an energy efficient multi-stage crushing plant according to any one of claims 1 to 9, characterized in that the method comprises:

step S1, conveying ore raw materials to a primary crushing mechanism (2) for crushing operation;

s2, screening the ore crushed by the primary crushing mechanism (2) through an ore screening mechanism (5), enabling the ore to pass through a folding baffle assembly (54) of the ore screening mechanism (5) from top to bottom, enabling the ore with smaller granularity to pass through a sieve hole (55) on the folding baffle assembly (54) under the vibration effect and directly enter a first feeding port (57), enabling the ore with larger granularity to be fed into a second feeding port (58) through the folding baffle assembly (54) for continuous crushing, and extracting dust through a dust removing mechanism (7) when the ore passes through the folding baffle assembly (54), so that subdivision of the ore is reduced, and recovery rate of the ore is increased;

s3, when the water content in the ore is detected to be higher, a drying mechanism (8) is started to supply hot air into the ore screening mechanism (5), the drying mechanism (8) collects hot air generated by motors of the primary crushing mechanism (2) and the secondary crushing mechanism (3) and conveys the hot air to the ore screening mechanism (5), the ore passing through the ore screening mechanism (5) is dehumidified while dust is removed, and when the temperature of the hot air conveyed by the drying mechanism (8) is detected to be lower than a preset value, the hot air collected by the motors is conveyed into a heater (85) to be heated and then conveyed into the ore screening mechanism (5) to be dried;

And S4, conveying the crushed ore with smaller granularity by the primary crushing mechanism (2) into the conveying mechanism (6) through the first feeding port (57) after dust removal or drying, and conveying the crushed ore by the secondary crushing mechanism (3) into the conveying mechanism (6).