Long flame coal particle crusher

Abstract

The utility model discloses a long flame coal particle crusher, and relates to the technical field of long flame coal powder crushing devices. The long flame coal particle crusher comprises a crushing box body, a raw coal scattering box is arranged at the top of the crushing box body, a primary crushing unit is arranged in the raw coal scattering box, a secondary crushing unit is arranged at a crushing cavity in the crushing box body and comprises a crushing barrel, crushing shafts are installed at the two ends of the crushing barrel, and gears are arranged on the crushing shafts; and magnetic grids mounted at the bottoms of the two guide discharging seats are arranged below the crushing cylinder. According to the utility model, the blanking openings are formed among the magnetic rods in the magnetic grids in the secondary crushing unit, so that magnetic or metal foreign matters are adsorbed in the blanking process of pulverized coal, coal briquettes which are not completely crushed can be prevented from entering a mechanism at the lower part of the crushing cavity to a great extent, and the crushed long flame coal is preliminarily screened with a certain particle size; and the condition that iron chips are doped in the coal particles is further relieved and prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to long flame coal powder crushing device technical field, concretely is a long flame coal particle crusher. BACKGROUND

[0002] Long flame coal is the appellation of the lowest coalification degree bituminous coal in the national standard of coal classification in China. It has particularly high volatile matter, and the flame is long during combustion, thus being named. The caking property of long flame coal is very weak, and it is generally not coked, is non-coking coal, and is mainly used as power and chemical coal. In the coking blending coal of individual coking plants, a small amount of long flame coal with low ash and low sulfur is sometimes used to reduce the ash content and sulfur content of coke, but the amount of blending should not be too much, otherwise the mechanical strength of coke will be significantly deteriorated. Since long flame coal is difficult to crush, it should be crushed separately before blending.

[0003] The coal powder crushing device disclosed in Chinese patent publication No. CN210646630U sets up a first motor, a second motor, a first crushing rod, a second crushing rod, a spiral rod and a screen plate, so that when solid coal is crushed, the first motor is controlled to rotate, thereby enabling the first crushing rod and the second crushing rod to cooperate with each other to crush the solid coal. After crushing, the solid coal meeting the requirements is collected by the staff, and the larger solid coal is sent into the box again for crushing by the spiral rod, so that the solid coal can be completely crushed, and the crushing effect is good.

[0004] The above device preliminarily crushes the coal during transportation by using a spiral rod, and then crushes it again by using a crushing rod after transportation is completed. However, the device sets up a corresponding closed buffer space to complete the full crushing of the crushing rod, and the carbon material used in lithium-sodium batteries generally requires a small particle size, generally less than 50 μm. Large particles will affect the pyrolysis in the subsequent carbonization process, and simple crushing cannot guarantee the particle size. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a long flame coal particle crusher, which solves the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model realizes the following technical scheme: a long flame coal particle crusher, comprising a crushing box main body, a raw coal scattering box is arranged at the top of the crushing box main body, a preliminary crushing unit is arranged in the raw coal scattering box, a secondary crushing unit is arranged at the crushing cavity in the crushing box main body, and the raw coal scattering box is fixedly connected with the crushing box main body;

[0007] The secondary crushing unit comprises a semi-closed crushing cylinder which is located directly below the primary crushing unit and is welded to the inner wall of the crushing cavity, two crushing shafts are symmetrically and rotatably installed at the two ends of the crushing cylinder, gears are arranged on the two crushing shafts and are connected with each other, and crushing hammers for crushing are respectively and key-connected to the two crushing shafts, and a magnetic grid is arranged below the crushing cylinder and is mounted on the bottom of the two guide discharge seats.

[0008] Further improvement of the technical scheme of the utility model lies in that the two guide discharge seats are respectively welded to the two ends inside the crushing cavity, the magnetic grid is composed of array-arranged magnetic rods and a discharge frame welded with the guide discharge seat, a plurality of groups of the magnetic rods form discharge ports between each other, and the bottom of the crushing cylinder is provided with a discharge channel for discharging.

[0009] In the process of ensuring the discharging of the coal powder, the magnetic rods in the magnetic grid can adsorb the magnetic or metal foreign matters, and correspondingly, the size of the discharge port can greatly avoid the uncrushed coal blocks from entering the mechanism in the lower part of the crushing cavity, so that the crushed long flame coal is preliminarily screened according to the particle size, and when the crushing hammer is damaged on the surface after a long time of operation in the common processing, the iron and magnetic foreign matters enter the discharge channel at the bottom, so that the magnetic rods can further alleviate and prevent the iron filings in the coal particles from being mixed.

[0010] Further improvement of the technical scheme of the utility model lies in that guide blocks are symmetrically welded to the bottom of the crushing cavity, a filter screen plate is slidingly installed between the two guide blocks, the filter screen plate is connected with a return spring through a connecting base fixedly installed at the bottom, and the other end of each return spring is sleeved on a corresponding sleeve column.

[0011] Further improvement of the technical scheme of the utility model lies in that a vibrating shaft is rotatably installed at the bottom of the filter screen plate in the crushing cavity, a cam mechanism is key-connected to the vibrating shaft, the filter screen plate is obliquely placed and provided with a discharge seat communicating with an airflow crushing pipeline at the lower end, and the airflow crushing pipeline is connected with an airflow crushing mechanism.

[0012] After the vibrating shaft drives the cam mechanism to complete the vibration of the filter screen plate, the filter holes in the filter screen plate can be prevented from being blocked to a certain extent, the filtering and screening efficiency is improved, the coal particles are prevented from adhering to the surface of the filter screen plate, the discharging is ensured to be smooth, and in addition, the coal particles finally leaving the crushing box body enter the airflow crushing pipeline and are further adjusted and controlled in particle size by the airflow crushing mechanism.

[0013] The further improvement in the technical scheme of the utility model lies in that: the primary crushing unit comprises a scattering shaft rotatably arranged in the raw coal scattering box, a plurality of scattering rods for scattering the raw coal are arranged in an array on the scattering shaft, the raw coal scattering box as a whole is circular and is provided with an opening communicating with the crushing box body at the bottom, a buffer seat welded to the bottom of the raw coal scattering box is arranged at the bottom of the opening, and a sealing plate limitedly connected to the bottom of the buffer seat through an electric push rod is slidably arranged in the buffer seat.

[0014] The scattering shaft completes the primary crushing of the long flame coal, and in this process, a corresponding buffer space is arranged to facilitate sufficient scattering of the scattering shaft. The electric push rod in the buffer seat is retracted after the primary scattering of the raw coal is completed, so that the sealing plate is lowered to cancel the sealing of the raw coal scattering box, and the scattered raw coal gradually enters the crushing box body through the buffer seat for secondary crushing.

[0015] The further improvement in the technical scheme of the utility model lies in that: the vibration shaft and the scattering shaft are provided with transmission wheels for transmission at the same end, the two transmission wheels are fixedly connected with the vibration shaft and the scattering shaft respectively, and the two transmission wheels are drivingly connected with a transmission belt.

[0016] Advantages

[0017] The utility model provides a kind of long flame coal particle crusher. Compared with prior art, it has the following advantages:

[0018] 1. The long flame coal particle crusher, the magnetic rod in the magnetic grid in the secondary crushing unit forms a discharge opening between each other, which can adsorb magnetic or metal foreign matter and prevent unbroken coal from entering the mechanism in the lower part of the crushing cavity, thereby preliminarily screening the broken long flame coal to a certain particle size and further preventing iron filings from mixing with the coal particles.

[0019] 2. The long flame coal particle crusher, the sealing plate controls the discharge of raw coal while the primary crushing unit completes the primary scattering and crushing of raw coal, forming a closed buffer space with the raw coal scattering box to facilitate the scattering and crushing of long flame coal particles. The secondary crushing unit completes the final screening of coal particles, preventing large particles from mixing and affecting the pyrolysis in the subsequent carbonization process. DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model as a whole.

[0021] Figure 2 It is a schematic diagram of the secondary crushing unit of the utility model.

[0022] Figure 3 It is a schematic diagram of the discharge seat of the secondary crushing unit of the utility model.

[0023] Figure 4 It is a structure schematic view of the primary crushing unit of the utility model.

[0024] In the figure: 101, crushing box main body; 102, raw coal scattering box; 201, crushing cylinder; 202, crushing shaft; 203, gear; 204, crushing hammer; 205, guiding discharging seat; 206, magnetic rod; 207, discharging frame; 208, guiding block; 209, filter screen plate; 210, connecting base; 211, return spring; 212, sleeving column; 213, vibrating shaft; 214, cam mechanism; 215, airflow crushing pipeline; 216, discharging seat; 301, scattering shaft; 302, scattering rod; 303, opening; 304, buffer seat; 305, electric push rod; 306, sealing plate; 307, transmission wheel; 308, transmission belt. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] With reference to Figures 1-4 The utility model provides three technical schemes:

[0027] Embodiment one:

[0028] A long flame coal particle crusher, including crushing box main body 101, the top of crushing box main body 101 is provided with raw coal scattering box 102, raw coal scattering box 102 is provided with primary crushing unit in, the crushing cavity in crushing box main body 101 is provided with secondary crushing unit, and raw coal scattering box 102 is fixedly connected with crushing box main body 101.

[0029] The secondary crushing unit includes the half-closed crushing cylinder 201 located directly below the primary crushing unit and welded to the inner wall of the crushing cavity, the crushing shaft 202 is symmetrically rotatably installed at both ends of the crushing cylinder 201, the gear 203 is arranged on the two crushing shafts 202 for mutual engagement, and the crushing hammer 204 is key-connected to the two crushing shafts 202 for crushing, and the through magnetic grid is installed at the bottom of the two guiding discharging seats 205 below the crushing cylinder 201.

[0030] Two guide blanking seats 205 are respectively welded at both ends inside the crushing cavity, and the magnetic grid is composed of arrayed magnetic rods 206 and a blanking frame 207 welded with the guide blanking seats 205, a plurality of groups of magnetic rods 206 form blanking ports between each other, and the bottom of the crushing cylinder 201 is provided with a blanking passage for blanking.

[0031] In the embodiment, the magnetic rods 206 in the magnetic grid form blanking ports between each other to adsorb magnetic or metal impurities in the process of ensuring the blanking of the pulverized coal, and correspondingly, the size of the blanking port can greatly avoid the uncrushed coal blocks from entering the mechanism in the lower part of the crushing cavity, thereby preliminarily screening the crushed long flame coal according to the particle size, and the surface of the crushing hammer 204 is damaged after a long time of operation in common processing, so that iron and magnetic impurities enter the bottom blanking passage, and the magnetic rods 206 can further alleviate and prevent the iron filings mixed in the coal particles.

[0032] Embodiment two:

[0033] On the basis of the first embodiment, guide blocks 208 are symmetrically welded at both ends of the bottom of the crushing cavity, a filter screen plate 209 is slidingly installed between the two guide blocks 208, the filter screen plate 209 is correspondingly connected to a return spring 211 through a fixedly installed connecting base 210 at the bottom, and the other end of each return spring 211 is sleeved on a corresponding sleeve column 212.

[0034] The bottom of the filter screen plate 209 is provided with a vibrating shaft 213 rotatingly installed in the crushing cavity, a cam mechanism 214 is keyed connected to the vibrating shaft 213, the filter screen plate 209 is obliquely placed and provided with a blanking seat 216 communicating with an airflow crushing pipeline 215 at the lower end, and the airflow crushing pipeline 215 is connected to an airflow crushing mechanism.

[0035] In the embodiment, after the vibrating shaft 213 drives the cam mechanism 214 to complete the vibration of the filter screen plate 209, the clogging of the filter holes in the filter screen plate 209 can be avoided to a certain extent, the filtering and screening efficiency is accelerated, the coal particles are prevented from sticking to the surface of the filter screen plate 209, the blanking is ensured to be smooth, in addition, the coal particles finally leaving the crushing box body 101 enter the airflow crushing pipeline 215 to be further adjusted and controlled in particle size by the airflow crushing mechanism, the large coal particles attached to the filter screen plate 209 are extracted after the filter screen plate 209 is cleaned, and the mesh compartment, grid and mesh hole of the filter screen plate 209 are extracted after the filter screen plate 209 is cleaned.

[0036] For further adjustment and control of the particle size by the airflow breaking mechanism, the embodiment provides a more general and commonly known breaking method by the high-speed rotating rotor and airflow to the material, specifically, when the coal powder enters the pipeline 215 of the airflow breaking mechanism, the particle size is observed, if the particle size is further reduced, the coal powder is gradually broken into small particles through the impact, friction and shearing action between the rotor and the fixed gear, and then different particle sizes of the coal powder are obtained through the classification of the screen, it should be noted that the parameters such as the feeding speed, the air inlet pressure, the gas-solid ratio, the airflow temperature and the rotating speed of the grading wheel are reasonably set, so that the best breaking effect is obtained.

[0037] Embodiment three:

[0038] On the basis of the embodiment one and the embodiment two: the primary crushing unit includes a scattering shaft 301 rotatably arranged in the raw coal scattering box 102, a plurality of scattering rods 302 for scattering the raw coal are arranged on the scattering shaft 301, the raw coal scattering box 102 is circular as a whole and is provided with an opening 303 communicating with the crushing box body 101 at the bottom, the opening 303 is provided with a buffer seat 304 welded to the bottom of the raw coal scattering box 102, and a sealing plate 306 in limiting connection with the bottom of the buffer seat 304 is slidably installed in the buffer seat 304.

[0039] In the embodiment, the scattering shaft 301 completes the primary crushing of the long-flame coal raw coal, and in this process, a corresponding buffer space is arranged to facilitate sufficient scattering of the scattering shaft 301, the electric push rod 305 in the buffer seat 304 is retracted after the primary scattering of the raw coal is completed, so that the sealing plate 306 is lowered to cancel the sealing of the raw coal scattering box 102, and the scattered raw coal gradually enters the crushing box body 101 for secondary crushing through the buffer seat 304.

[0040] Therefore, the primary crushing unit completes the primary scattering and crushing of the raw coal, the sealing plate 306 controls the discharge of the raw coal, and the buffer space closed with the raw coal scattering box 102 facilitates the sufficient scattering and crushing of the raw coal, and the secondary crushing unit completes the final screening of the coal particles, avoids the mixing of large particles, and avoids affecting the pyrolysis in the subsequent carbonization process.

[0041] The vibration shaft 213 and the scattering shaft 301 are provided with a transmission wheel 307 for transmission at the same end, the two transmission wheels 307 are fixedly connected with the vibration shaft 213 and the scattering shaft 301 respectively, and the transmission belt 308 is drivingly connected between the two transmission wheels 307.

[0042] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art, and the model parameters of the electric appliances are not specifically limited, and conventional equipment can be used.

[0043] When in use, the raw coal is poured into the raw coal scattering box 102, the scattering shaft 301 completes the primary crushing of the long flame coal raw coal, at this time the sealing plate 306 keeps the raw coal scattering box 102 in a sealed state, the electric push rod 305 in the buffer seat 304 is retracted after the primary scattering of the raw coal is completed, so that the sealing plate 306 is lowered to cancel the sealing of the raw coal scattering box 102, the scattered raw coal gradually enters the crushing box main body 101 through the buffer seat 304 for secondary crushing, at this time the crushing shaft 202 rotates, and the two crushing hammers 204 start to crush the coal particles due to the meshing of the gear 203, the coal particles are gradually pulverized and gradually enter the discharge channel, reach the magnetic grid, at this time the vibration shaft 213 drives the cam mechanism 214 to start impacting the filter screen plate 209, the filter screen plate 209 is lifted and vibrated on the guide block 208, due to the inclination of the filter screen plate 209, the coal particles enter the discharge seat 216 connected to the airflow crushing pipeline 215, and the airflow crushing mechanism further adjusts and controls the particle size.

[0044] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0045] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments change, modify, replace, and vary in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A long flame coal particle breaker comprising a breaker box body (101) characterised in that: The raw coal scattering box (102) is internally provided with a primary crushing unit, a secondary crushing unit is arranged at the crushing cavity in the crushing box body (101), and the raw coal scattering box (102) is fixedly connected with the crushing box body (101); The secondary crushing unit comprises a semi-closed crushing cylinder (201) arranged below the primary crushing unit and welded to the inner wall of the crushing cavity, two crushing shafts (202) are symmetrically and rotatably arranged at the two ends of the crushing cylinder (201), gears (203) are arranged on the two crushing shafts (202) and are connected with each other, and crushing hammers (204) for crushing are respectively and key-connected on the two crushing shafts (202), and a magnetic grid is arranged at the bottom of the two guide discharge seats (205).

2. A long flame coal particle disintegrator as claimed in claim 1 wherein: The two guide discharge seats (205) are respectively welded to the two ends of the crushing cavity, the magnetic grid is composed of arrayed magnetic rods (206) and a discharge frame (207) welded with the guide discharge seat (205), a plurality of groups of the magnetic rods (206) form discharge ports therebetween, and the bottom of the crushing cylinder (201) is provided with a discharge channel for discharging.

3. A long flame coal particle disintegrator as claimed in claim 1 wherein: The two ends of the bottom of the crushing cavity are symmetrically welded with guide blocks (208), a filter screen plate (209) is slidingly arranged between the two guide blocks (208), the filter screen plate (209) is correspondingly connected with a return spring (211) through a connecting base (210) fixedly arranged at the bottom, and the other end of each return spring (211) is sleeved on a corresponding sleeve column (212).

4. A long flame coal particle disintegrator as claimed in claim 3 wherein: The bottom of the filter screen plate (209) is provided with a vibrating shaft (213) rotatably arranged in the crushing cavity, the vibrating shaft (213) is key-connected with a cam mechanism (214), the filter screen plate (209) is obliquely placed and provided with a discharge seat (216) communicating with an airflow crushing pipeline (215) at the lower end, and the airflow crushing pipeline (215) is connected with an airflow crushing mechanism.

5. A long flame coal particle disintegrator as claimed in claim 4, wherein: The primary crushing unit comprises a scattering shaft (301) rotatably arranged in the raw coal scattering box (102), a plurality of scattering rods (302) for scattering raw coal are arrayed on the scattering shaft (301), the raw coal scattering box (102) is circular as a whole and is provided with an opening (303) communicating with the crushing box body (101) at the bottom, a buffer seat (304) is welded to the bottom of the raw coal scattering box (102) at the bottom of the opening (303), and a sealing plate (306) is slidingly arranged in the buffer seat (304) and is limitingly connected with an electric push rod (305) at the bottom thereof.

6. A long flame coal particle disintegrator as claimed in claim 5 wherein: The vibrating shaft (213) and the scattering shaft (301) are provided with a transmission wheel (307) for transmission at the same end, the two transmission wheels (307) are respectively fixedly connected with the vibrating shaft (213) and the scattering shaft (301), and a transmission belt (308) is drivingly connected between the two transmission wheels (307).

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