Feeding accelerator for roll crusher
By designing a feed accelerator in the roll crusher, the problem of low yield in the prior art is solved, and the output of the roll crusher is significantly improved when producing small-particle ore is achieved, and the roll wear and energy consumption is reduced. .
Patent Information
- Application Number
- CN202421136160.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The existing counterroll crushers have low yields in producing sand with particle diameters below 2.5 mm, making it difficult to compete with other crushing equipment.
A feed accelerator for roll crusher is designed to accelerate the output of ore particles to be crushed through the accelerator to meet specific speed conditions to improve crushing efficiency.
The yield of crushed finished products is significantly improved when they are small-grained ore. The yield of crushed finished products is fine sand and gravel below 1.0mm can be increased by 10 to 20 times, and the roll is less worn, has a long service life and low energy consumption.
Smart Images
Figure CN222469167U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of double-roll crusher machine sand making, and in particular to a feed accelerator for a double-roll crusher. Background Art
[0002] The double-roll crusher is a commonly used ore crushing machine with the advantages of simple and reliable structure, large crushing ratio, low cost of wearing parts, and simple maintenance. It is a very mature ore crushing machine with a history of more than 100 years. In the double-roll crusher, there are usually two independent rollers with horizontally arranged main shafts and parallel to each other. Each roller rotates under the drive of the motor, and the two rollers rotate in opposite directions. There is usually a gap of about 0 to 20 mm between the two rollers. The size of the gap can be adjusted by adjusting the position of one roller. The gap between the two rollers can determine the size of the ore particles that can be crushed. Before working, the gap between the two rollers should be adjusted according to the size of the finished ore particles required; during working, the large particles of ore to be crushed (usually with a diameter of more than 30 to 50 mm) enter the gap between the two rollers inside the equipment from the feed port, and are squeezed by the two relatively moving rollers to be crushed into smaller particles. Its crushing form belongs to pressure crushing. The size of the gap between the two rollers has a great influence on the ore output and particle diameter. Generally, the size of this gap must be checked and adjusted frequently to ensure the normal operation of the roller crusher.
[0003] Due to the rapid development of the construction industry in recent years, the demand for various sand and gravel is very large. Due to environmental protection requirements, the country has implemented a ban on river sand mining, so various construction sand and gravel are replaced by machine-made sand in large quantities. Machine-made sand is to crush large-sized ore with crushing equipment to form sand and gravel with various particle diameters to meet the various needs of construction and other industries. Among them, various sizes of sand and gravel with a particle diameter of less than 30 mm can be used in various grades of concrete for construction, such as concrete frames of various buildings, various concrete pavements and bridges and dams; various sizes of sand with a particle diameter of less than 2.5 mm can be used in dry-mixed mortar (including masonry mortar, plastering mortar, etc.) and certain special mortars; various sizes of sand with a particle diameter of less than 0.6 mm can be used in various special mortars (including self-leveling mortar, thermal insulation mortar, etc.), foundry sand, chemicals, waterproof membranes, toothpaste and many other industries.
[0004] The double-roll crusher can produce sand and gravel of various sizes mentioned above, but its disadvantage of low output becomes very obvious when producing sand of various sizes with particle diameter below 2.5 mm, making it difficult to compete with other crushing equipment. Utility Model Content
[0005] 1. Technical issues to be solved
[0006] In view of the deficiencies in the prior art, the present application provides a feed accelerator for a double-roll crusher.
[0007] (II) Technical solution
[0008] To solve the above problems, the present application provides the following technical solutions: a feed accelerator, comprising
[0009] The feed accelerator comprises a feed end and a discharge end, the feed end is used to input ore particles to be crushed, and the feed accelerator accelerates the ore particles to be crushed input from the feed end and then outputs them from the discharge end; the movement direction of the ore particles to be crushed output from the discharge end is a first direction;
[0010] The discharging end is used to output the ore particles to be crushed to a double-roll crusher, which is used to crush the ore particles to be crushed. The double-roll crusher includes at least two rollers, which are arranged relatively parallel to each other and can realize synchronous but opposite relative rotation under the action of a driving mechanism, so as to crush the ore particles to be crushed.
[0011] The discharging end is located directly above the center line of the two rollers, and the first direction is vertically downward.
[0012] Preferably, the ore particles to be crushed outputted from the discharging end meet the following conditions when in contact with the roller:
[0013] 0.7V 3 ≤V 1 +V 2 ≤1.3V 3 ;
[0014] Among them, the output speed of the ore particles to be crushed at the discharge end of the feed accelerator is V 1 The velocity change of the ore particles to be crushed from the discharge end of the feed accelerator to the feed port of the roller based on the gravity acceleration is V 2 , the linear speed of the roller is V 3。
[0015] Preferably, a feeding device is arranged directly above the feeding end of the feed accelerator, and the feeding device includes a feeding hopper for temporarily storing the ore particles to be crushed, and a feeding belt conveyor is arranged below the discharge port of the feeding hopper for evenly conveying the ore particles to be crushed in the feeding hopper to the feeding port of the feed accelerator.
[0016] Preferably, the feed accelerator also includes an acceleration housing, and a first motor and a second motor are fixedly installed on both sides of the acceleration housing, respectively, and the first motor and the second motor are connected to a first acceleration wheel axle and a second acceleration wheel axle respectively, and the first motor and the second motor respectively drive the first acceleration wheel axle and the second acceleration wheel axle to rotate inside the acceleration housing, and a first toothed acceleration wheel and a second toothed acceleration wheel are fixedly installed on the first acceleration wheel axle and the second acceleration wheel axle respectively, and the acceleration wheel first and the second toothed acceleration wheel rotate synchronously but in opposite directions relative to each other under the action of the first motor and the second motor.
[0017] Preferably, the first toothed acceleration wheel and the second toothed acceleration wheel are installed in parallel at the center line position inside the acceleration housing, the first toothed acceleration wheel and the second toothed acceleration wheel have the same structure, the outer circumferential surfaces of the two toothed acceleration wheels have teeth that are the same length as the wheel length along the wheel length direction, and a gap is set between the two toothed acceleration wheels.
[0018] Preferably, the feed end is fixedly installed above the accelerator housing, and the feed end is located just above the middle of the first toothed acceleration wheel and the second toothed acceleration wheel, and is used to guide the ore particles input into the feed accelerator through the feed end to fall in the middle position of the two toothed acceleration wheels.
[0019] (III) Beneficial effects
[0020] Compared with the prior art, the present application provides a feed accelerator for a double-roll crusher, which has the following beneficial effects:
[0021] 1. The feed accelerator of the double roller crusher can greatly increase the output when the crushed product is small-particle ore. When the crushed product is fine sand and gravel below 1.0 mm, the output can be increased by 10 to 20 times under the same roller diameter, length and power.
[0022] 2. The double-roll crusher uses a feed accelerator. The double-roll crusher belongs to static pressure crushing. Compared with other sand making equipment, there is no relative sliding between the rollers and the ore particles, so the wearing parts (rollers) have less wear and tear and a long service life. The service life of a pair of rollers can reach 2000 to 4000 hours, and the later use cost is very low.
[0023] 3. The double-roll crusher uses a feed accelerator and crushes the small particles by static pressure. The powder content in the finished small particles produced is low. Compared with other crushing equipment, the powder content in the finished small particles can generally be reduced by about 10%, which can significantly save raw material costs for users.
[0024] 4. This double-roll crusher uses a feed accelerator. Compared with other sand-making equipment, the energy of this crushing device is basically all used for crushing, with low energy consumption. The same output can save 20% to 30% energy, which can significantly save electricity costs for users. The equipment has a simple structure, high reliability, and easy maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a schematic diagram of the structure of the double-roll crusher of this application;
[0026] Figure 2 This is a schematic diagram of the structure of the roll crusher without the cover in this application;
[0027] Figure 3 This is a schematic diagram of the structure of the crushing device with a feed accelerator in the present application;
[0028] Figure 4 This is a schematic diagram of the structure of the crushing device with a feed accelerator from the side view of the present application;
[0029] Figure 5 This is a schematic diagram of the structure of the crushing device with a feed accelerator in the present application from a top view;
[0030] Figure 6 For this application Figure 5 Structural diagram of the middle CC section;
[0031] Figure 7 This is a three-dimensional structural schematic diagram of the crushing device with a feed accelerator in this application;
[0032] Figure 8 This is a schematic diagram of the structure of the feed accelerator facing forward in this application;
[0033] Fig. 9 This is a schematic diagram of the structure of the feed accelerator from the side view of this application;
[0034] Fig.10 This is a schematic diagram of the structure of the feed accelerator from a top view of the present application;
[0035] Fig.11 For this application Fig.10 Schematic diagram of the structure of the AA section;
[0036] Fig.12 For this application Figure 8 Schematic diagram of the structure of the medium BB;
[0037] Fig.13 This is a three-dimensional structural diagram of the feed accelerator of this application;
[0038] Fig.14 This is a schematic diagram of the structure of the rectangular gear acceleration wheel of this application.
[0039] In the figure: 1. electric motor; 2. driving pulley; 3. V-belt; 4. feed port; 5. driven pulley; 6. pressure regulating cylinder; 7. crusher base; 8. first roller; 9. second roller; 10. loading hopper; 11. loading belt conveyor; 12. feeding accelerator; 13. collecting box; 14. collector; 12.1. accelerator housing; 12.2. first electric motor; 12.3. second electric motor; 12.4. feed end; 12.5. first toothed acceleration wheel; 12.6. first acceleration wheel shaft; 12.7. second toothed acceleration wheel; 12.8. second acceleration wheel shaft. DETAILED DESCRIPTION
[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0041] The present application provides a new technical solution: a feed accelerator for a double-roll crusher, comprising the feed accelerator 12 including a feed end 12.4 and a discharge end, the feed end 12.4 being used to input ore particles to be crushed, the feed accelerator 12 accelerating the ore particles to be crushed input from the feed end 12.4 and outputting them from the discharge end; the movement direction of the ore particles to be crushed output from the discharge end is a first direction; the discharge end is used to output the ore particles to be crushed to a double-roll crusher, the double-roll crusher being used to crush the ore particles to be crushed, the double-roll crusher comprising at least two rollers, the two rollers being arranged relatively parallel to each other, and the two rollers being able to realize synchronous but opposite relative rotation under the action of a driving mechanism, for crushing the ore particles to be crushed; the discharge end is located directly above the center line of the two rollers, and the first direction is vertically downward.
[0042] When the ore particles to be crushed outputted from the discharging end come into contact with the roller, the following conditions are met:
[0043] 0.7V 3 ≤V 1 +V 2 ≤1.3V 3 ;
[0044] Among them, the output speed of the ore particles to be crushed at the discharge end of the feed accelerator is V 1 The velocity change of the ore particles to be crushed from the discharge end of the feed accelerator to the feed port of the roller based on the gravity acceleration is V 2 , the linear speed of the roller is V 3 .
[0045] See also Figure 1-Figure 2In some embodiments, more specifically, the double-roll crusher includes a crusher base 7, on which are mounted two first rollers 8 and second rollers 9, which are independent of each other, have horizontally arranged main axes and are parallel to each other, and driven pulleys 5 are respectively mounted on the first roller 8 and the second roller 9, with a total of two driven pulleys 5; an electric motor 1 is respectively mounted on both sides of the first roller 8 and the second roller 9, with a total of two electric motors 1, and a driving pulley 2 is mounted on each motor 1, with a total of two driving pulleys 2, and a V-belt 3 is mounted between the driving pulley 2 and the driven pulley 5 on each side, with a total of two sets of V-belts 3; when in use, the power of the electric motor 1 is transmitted to the first roller 8 and the second roller 9 respectively under the transmission of the V-belt 3, and the first roller 8 and the second roller 9 rotate driven by the two motors 1, and the two rollers rotate in opposite directions.
[0046] To be more specific, the gap between the first roller 8 and the second roller 9 is set, and a gap of about 0 to 20 mm is usually reserved between the first roller 8 and the second roller 9. The size of the gap can be adjusted by adjusting the position of any roller. The size of the gap between the two rollers determines the size of the particle diameter of the ore particles that can be ground out. Two pressure-regulating cylinders 6 are respectively installed on both sides of the first roller 8 and the second roller 9, which can adjust the crushing force of the two rollers on the ore particles to meet the crushing requirements of ores of different sizes.
[0047] To be more specific, the double-roll crusher also includes a feed port 4 and a discharge port; the feed port 4 is located directly below the discharge end of the feed accelerator 12 and is used to input ore particles accelerated by the feed accelerator 12, and the discharge port is used to output crushed ore particles.
[0048] See also Figure 3-Figure 7 In some embodiments, to be more specific, a feeding device is provided directly above the feeding end of the feed accelerator 12, and a feeding hopper 10 is provided from high to low to temporarily store the ore to be crushed. A feeding belt conveyor 11 is installed below the discharge port of the feeding hopper 10 to uniformly transport the ore particles to be crushed in the feeding hopper 10 to the feeding end above the feed accelerator 12. The ore particles to be crushed fall from the feeding end into the feed accelerator 12, and fall into the teeth on the two relatively rotating toothed acceleration wheels. The ore particles are accelerated by the collision of the teeth to the same maximum linear velocity of the outer circle of the acceleration wheel, and finally thrown out along the tangential direction of the acceleration wheel. Since the ore particles coming out are relatively scattered, a collector 14 is provided below the feed port 4 of the double-roll crusher. The collector 14 is responsible for collecting these scattered ore particles together, concentrating them into a thin and uniform material flow, and shooting them into the middle of the two first rollers 8 and the second rollers 9 of the high-speed double-roll crusher below at high speed for crushing and crushing.
[0049] More specifically, a collection box 13 is provided below the discharge port of the double-roll crusher, and the collection box 13 can temporarily store the crushed small-particle ore.
[0050] See also Figure 8-Figure 14 In some embodiments, more specifically, the feed accelerator 12 also includes an accelerator housing 12.1, on both sides of which are fixedly mounted a first motor 12.2 and a second motor 12.3, the first motor 12.2 and the second motor 12.3 are respectively connected to a first acceleration wheel shaft 12.6 and a second acceleration wheel shaft 12.8, the first motor 12.2 and the second motor 12.3 respectively drive the first acceleration wheel shaft 12.6 and the second acceleration wheel shaft 12.8 to rotate inside the accelerator housing 12.1, and a first toothed acceleration wheel 12.5 and a second toothed acceleration wheel 12.7 are respectively fixedly mounted on the first acceleration wheel shaft 12.6 and the second acceleration wheel shaft 12.8, and the acceleration wheel 12.5 and the second toothed acceleration wheel 12.7 rotate synchronously but in opposite directions relative to each other under the action of the first motor 12.2 and the second motor 12.3.
[0051] Specifically, the first toothed acceleration wheel 12.5 and the second toothed acceleration wheel 12.7 are installed in parallel at the center line position inside the acceleration housing 12.1. The first toothed acceleration wheel 12.5 and the second toothed acceleration wheel 12.7 have the same structure. The outer circumference of the two toothed acceleration wheels has teeth that are as long as the wheel length along the wheel length direction. The two wheels have the same structure. Teeth that are as long as the wheel length are processed along the wheel length direction on their outer circumferences. The teeth can be gear teeth, or square, rectangular, etc. The teeth are evenly distributed on the outer circumference of the acceleration wheel. The more teeth there are, the thinner and more evenly the ore particles coming out of the feed accelerator 12 will be spread. The tooth shape can be made by mechanical processing (milling machine, planer or wire cutting and other processing equipment), can also be directly cast, or cut by laser, flame, etc. In order to protect the teeth and extend their service life, the teeth can be made of various wear-resistant materials, or the tooth surface can be sprayed, covered with a wear-resistant layer, or a wear-resistant plate can be installed on the teeth for easy replacement, etc. The teeth of the two acceleration wheels do not mesh with each other, and the center distance between the two acceleration wheels is slightly larger than the outer diameter of a single acceleration wheel by about 1 to 2 mm, ensuring that the two acceleration wheels do not touch each other when rotating at high speed.
[0052] The feed end 12.4 on the feed accelerator 12 is used to guide the ore particles entering the feed accelerator 12 to basically fall in the middle of the two rollers. The feed end 12.4 is located directly above the middle of the first toothed acceleration wheel 12.5 and the second toothed acceleration wheel 12.7, and is used to guide the ore particles input into the feed accelerator 12 through the feed end to fall in the middle of the two toothed acceleration wheels.
[0053] During operation, the two motors are started first, and the two motors drive the two acceleration wheel shafts to rotate, and then drive the two toothed acceleration wheels to rotate relative to each other. The ore particles to be crushed are input into the interior of the feed accelerator 12 through the feed end 12.4. The ore particles to be crushed passing through the two toothed acceleration wheels can be accelerated by the relative rotation of the two toothed acceleration wheels.
[0054] In some embodiments, when a crushing device is crushing fine sand, firstly, the gap between the two rollers is adjusted according to the size of the finished ore, and the crushing force of the rollers on the ore is adjusted by adjusting the pressure regulating cylinders 6 on both sides of the two rollers to meet the crushing requirements of the ore; the ore particles to be crushed are loaded into the hopper 10 by a forklift or other equipment for temporary storage, and the material belt conveyor 11 is assembled below the discharge port of the upper hopper 10, and the ore particles to be crushed in the upper hopper 10 are evenly transported to the feed end 12.4 above the feed accelerator 12, and the ore particles to be crushed are transported from the feed end 12 to the feed end 12.4. .4 It falls into the feed accelerator 12 and into the teeth on the two relatively rotating toothed acceleration wheels. When the ore particles to be crushed are accelerated by the teeth to the discharge end and contact the rollers, at least 90% of the ore particles to be crushed have a speed consistent with the roller linear speed, and are finally thrown out along the tangent direction of the acceleration wheel; since the ore particles coming out are relatively scattered, the collector 14 is responsible for collecting these scattered ore particles together, concentrating them into a thin and uniform material flow, and shooting them into the middle of the two first rollers 8 and the second roller 9 of the high-speed double-roll crusher below at high speed, and crushing them into smaller particles.
Claims
1. A feed accelerator for a double-roll crusher, characterized in that: include The feed accelerator comprises a feed end and a discharge end, the feed end is used to input ore particles to be crushed, and the feed accelerator accelerates the ore particles to be crushed input from the feed end and then outputs them from the discharge end; the movement direction of the ore particles to be crushed output from the discharge end is a first direction; The discharging end is used to output the ore particles to be crushed to a double-roll crusher, which is used to crush the ore particles to be crushed. The double-roll crusher includes at least two rollers, which are arranged relatively parallel to each other and can realize synchronous but opposite relative rotation under the action of a driving mechanism, so as to crush the ore particles to be crushed. The discharging end is located directly above the center line of the two rollers, and the first direction is vertically downward.
2. A feed accelerator for a double-roll crusher according to claim 1, characterized in that: When the ore particles to be crushed outputted from the discharging end come into contact with the roller, the following conditions are met: 0.7V3≤V1+V2≤1.3V3; Among them, the output speed of the ore particles to be crushed through the discharge end of the feed accelerator is V1, the speed change of the ore particles to be crushed from the discharge end of the feed accelerator to the feed port of the roller based on gravity acceleration is V2, and the linear speed of the roller is V3.
3. A feed accelerator for a double-roll crusher according to claim 1, characterized in that: A feeding device is arranged directly above the feeding end of the feed accelerator, and the feeding device includes a feeding hopper for temporarily storing the ore particles to be crushed. A feeding belt conveyor is arranged below the discharge port of the feeding hopper for uniformly conveying the ore particles to be crushed in the feeding hopper to the feeding port of the feed accelerator.
4. A feed accelerator for a double-roll crusher according to claim 1, characterized in that: The feed accelerator also includes an acceleration housing, on both sides of which a first motor and a second motor are fixedly mounted, respectively, the first motor and the second motor are connected to a first acceleration wheel shaft and a second acceleration wheel shaft, respectively, the first motor and the second motor drive the first acceleration wheel shaft and the second acceleration wheel shaft to rotate inside the acceleration housing, respectively, the first acceleration wheel shaft and the second acceleration wheel shaft are fixedly mounted with a first toothed acceleration wheel and a second toothed acceleration wheel, and the first acceleration wheel and the second toothed acceleration wheel rotate synchronously but in opposite directions relative to each other under the action of the first motor and the second motor.
5. A feed accelerator for a double-roll crusher according to claim 4, characterized in that: The first toothed acceleration wheel and the second toothed acceleration wheel are installed in parallel at the center line position inside the acceleration housing. The first toothed acceleration wheel and the second toothed acceleration wheel have the same structure. The outer circumferential surfaces of the two toothed acceleration wheels have teeth that are the same length as the wheel length along the wheel length direction, and a gap is set between the two toothed acceleration wheels.
6. A feed accelerator for a double-roll crusher according to claim 4, characterized in that: The feed end is fixedly installed above the accelerator housing. The feed end is located just above the middle of the first toothed acceleration wheel and the second toothed acceleration wheel, and is used to guide the ore particles input into the feed accelerator through the feed end to fall in the middle of the two toothed acceleration wheels.