CN218924810U

CN218924810U - Double-roller crusher

Info

Publication number: CN218924810U
Application number: CN202223215512.9U
Authority: CN
Inventors: 吴学兵; 王建平; 周胜良; 倪寿生
Original assignee: Zhongye Changtian International Engineering Co Ltd
Current assignee: Zhongye Changtian International Engineering Co Ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-04-28
Anticipated expiration: 2032-12-01

Abstract

The utility model provides a twin roll crusher, this breaker includes crushing unit, card resistance detection unit and drive unit. The crushing unit comprises a first roll shaft and a second roll shaft which are arranged in close proximity and side by side. The driving unit is connected with the first roll shaft and the second roll shaft simultaneously and drives the first roll shaft and the second roll shaft to rotate relatively in opposite directions. The blocking detection unit is connected with the first roll shaft and the second roll shaft simultaneously and detects and controls the running states of the first roll shaft and the second roll shaft in real time. The rotating speed or current in the running process of the crushing unit is detected, whether the unbreakable bulk materials exist or not is identified and judged, the bulk materials are reversely rotated to the bulk outlet through a roll shaft reverse rotation mode, manual intervention is not needed, the production continuity is ensured, equipment faults are reduced, and the service life of the equipment is prolonged. Meanwhile, the large materials are separated, so that the quality of broken finished products is guaranteed.

Description

Double-roller crusher

Technical Field

The utility model relates to a crusher, in particular to a double-roller crusher, and belongs to the field of crushing equipment.

Background

The decarbonization device is one of the processes capable of processing gangue minerals in batches, and the gangue after decarbonization can be used for preparing cement building materials in a large quantity after activity is improved. The coal gangue mineral cakes are required to be crushed into a certain granularity (less than or equal to 30 mm) after decarburization is completed, but in the decarburization process, the trolley grate of the decarburization device, the heat insulation piece, the wear-resistant iron of the guide chute and the like are occasionally damaged and fall off in long-time work, and the coal gangue mineral cakes are mixed together to enter crushing equipment.

The grate, the heat insulating piece, the wear-resistant iron and the like are mainly made of high Cr cast iron or high Cr cast steel, the size is large (the common size is more than 250 mm), the hardness is high and the grate, the heat insulating piece and the wear-resistant iron are not broken, and the main chemical components of the gangue mineral cakes are SiO ₂ With Al ₂ O ₃ The strength is not high and the block is easy to break.

The traditional double-toothed roller crusher has no function of classifying massive materials, the size of vulnerable parts such as grate heat insulation parts under the working condition is larger, the maximum size is about 350mm, the granularity of crushed coal gangue is only 20-40 mm, and the gap between the double rollers is too small to pass. The components of the grate heat insulation member are mainly cast iron or cast steel, and the grate heat insulation member is similar to the hardness of the roller teeth (the roller teeth are usually made of cast steel or other wear-resistant materials) and cannot be broken. Without corresponding treatment, overload shutdown accidents of the double-toothed roller are likely to occur.

Patent number CN105498900B, a side toothed plate installs the through type double-toothed roller crusher of the adjusting device and adjusting method, this patent mainly through the mode of turning up, outside establishes the broken tooth of taking the lead screw transmission, adjusts broken granularity through adjusting the broken tooth of lead screw. The main characteristics are that the adjustment of the breaking granularity is convenient, the structure is reliable, etc.

Patent number CN111111842B, novel double-toothed roll crusher provides flexible holding power through the pneumatic cylinder, controls the granularity of broken material, and the adaptability of material is strong. When the large block exists, the flexible support can move backwards properly, and after the large block passes, the hydraulic cylinder returns again, so that the normal operation of the equipment is ensured. When one of the roller motors in the double rollers is damaged, the production can be reduced and the work can be maintained through the set linkage gear, so that the production continuity is ensured.

In the prior art, a movable roller is mainly arranged in the double-tooth roller, when a large block of material appears, the movable roller moves backwards, so that the large block of material passes through a mode of returning again after passing through the movable roller, or the trafficability of the non-crushable material is improved in a hydraulic mode, and the machine is stopped for manual intervention and the like. The defect is that large-particle impurities cannot be classified, or the granularity of the processed products is not uniform, the quality of the finished ore is not uniform, and meanwhile, the movable roller is required to be arranged in a complicated hydraulic or pneumatic mode, so that the structure is complicated and the cost is high.

Because the gangue decarburization device at the upstream of the crusher is made by 24 hours of continuous operation, the annual operation time is 330 days, if the impurity problem in the crushing process cannot be solved, the continuous operation rate of the whole system can be influenced, and the crusher capable of processing the uncrushable massive materials without stopping and guaranteeing the quality of the crushed materials is needed.

Disclosure of Invention

Aiming at the problem that an effective classification processing system for large-particle impurities is lacking in the prior art, the utility model provides the double-roller crusher, one or two of the double rollers are controlled to be reversed through identifying and judging the uncrushable massive materials, the uncrushable massive materials are discharged, manual intervention is not needed, the production continuity is ensured, the equipment faults are reduced, and the quality of the crushed materials is ensured.

According to an embodiment of the present utility model, a twin roll crusher is provided.

The utility model provides a twin roll crusher, this breaker includes crushing unit, card resistance detection unit and drive unit. The crushing unit comprises a first roll shaft and a second roll shaft which are arranged in close proximity and side by side. The driving unit is connected with the first roll shaft and the second roll shaft simultaneously and drives the first roll shaft and the second roll shaft to rotate relatively in opposite directions. The blocking detection unit is connected with the first roll shaft and the second roll shaft simultaneously and detects and controls the running states of the first roll shaft and the second roll shaft in real time.

Preferably, the crusher further comprises a hood. The hood is of a rectangular or cylindrical semi-closed structure with cavities penetrating through the upper side and the lower side. The first roll shaft and the second roll shaft are arranged inside the hood, and two ends of the first roll shaft and two ends of the second roll shaft are respectively arranged on two opposite side walls of the hood. The driving unit and the blocking detection unit are arranged outside the hood and are connected with the end parts of the first roll shaft and the second roll shaft.

Preferably, the hood is of a closed rectangular or cylindrical structure, a feed inlet is formed in the upper surface of the hood, and a finished product outlet and a bulk material outlet are formed in the lower bottom surface of the hood. The feed inlet is located directly over first roller and second roller. The finished product outlet is positioned right below the first roll shaft and the second roll shaft. And the two sides of the finished product outlet are provided with the bulk cargo outlets.

Preferably, the crusher further comprises a de-mixing unit. The two bulk material outlets are connected with the feed inlet of the impurity removing unit through the first bulk material conveying device, and the discharge outlet of the impurity removing unit is connected with the feed inlet of the hood through the second bulk material conveying device.

Preferably, the surfaces of the first roll shaft and the second roll shaft are respectively provided with raised roll teeth, and the roll teeth are uniformly distributed on the surfaces of the first roll shaft and the second roll shaft. The roller teeth on the surface of the first roller shaft and the roller teeth on the surface of the second roller shaft are arranged in a staggered mode.

Preferably, the roller teeth are provided with a material hooking part. When the first roll shaft and the second roll shaft normally rotate, one end of the material hooking part is fixed at the top end of the roll teeth and is arranged at one side far away from the rotating direction, and the other end extends towards the direction far away from the roll teeth. The material hooking part is used for removing materials positioned between the first roll shaft and the second roll shaft when the first roll shaft and the second roll shaft rotate outwards.

Preferably, the hooking portions are arranged perpendicular to the teeth.

Preferably, the crusher comprises a plurality of crushing units, wherein the crushing units are arranged side by side, and each crushing unit is connected with an independent blocking detection unit and a driving unit. Each crushing unit is correspondingly provided with a feed inlet, a finished product outlet and two bulk material outlets, and the same bulk material outlet is shared between any two adjacent crushing units.

Preferably, the blocking detection unit is a current detection device or a roller shaft rotation speed detection device.

Preferably, a bin is arranged above the feed inlet, the bin is of a conical structure with a bottom and a top opened, and the bottom opening of the bin corresponds to the feed inlet. A guide chute is arranged above the opening at the top of the storage bin.

Preferably, the bulk outlet and the finished product outlet are provided with guide plates.

According to the utility model, the decarburized and cooled gangue materials enter the double-roller crusher from the feed inlet above the crushing unit, the crusher normally operates, the first roller shaft rotates clockwise, the second roller shaft rotates anticlockwise, when the gangue materials contain uncrushable massive materials, the blocking detection unit detects that the rotating speed of the crushing unit is slow and blocked or the current exceeds a normal value, the driving unit is controlled to stop the roller shaft at the moment, after the movement inertia of the double rollers is eliminated to be completely stopped, the roller shaft is driven to rotate reversely, namely, the first roller shaft rotates anticlockwise, the second roller shaft rotates clockwise, the massive materials are reversely rotated to the bulk material outlets on two sides, the roller shaft is stopped again after a period of time (generally 1-3 min), the inversion is driven again, the massive materials are eliminated at the moment, and the crusher continues to perform normal crushing operation.

In the utility model, the identification and judgment of the unbreakable bulk material is specifically as follows: the driving unit can adjust the rotating speed of the roller shaft of the crushing unit, and the blocking detection unit is a current detection device or a roller shaft rotating speed detection deviceSetting the normal rotation speed of the first roll shaft as n ₁ An operating current less than I ₁ The normal rotation speed of the second roll shaft is n ₂ An operating current less than I ₂ . When the rotation speed of the first roll shaft is detected to be less than or equal to n ₁ Or the running current is greater than or equal to I ₁ The rotation speed of the second roll shaft is less than or equal to n ₂ Or the running current is greater than or equal to I ₂ When the crushing unit is stopped, the roller shaft is driven to reversely rotate.

In the utility model, when the driving unit drives the crushing unit with the same power, the normal rotation speed of the first roller shaft which rotates reversely is n ₁ An operating current less than I ₁ The normal rotation speed of the second roll shaft is n ₂ An operating current less than I ₂ . If reverse starting is abnormal, namely the rotating speed of the first roll shaft is less than n ₁ Or the running current is greater than or equal to I ₁ The rotation speed of the second roll shaft is less than n ₂ Or the running current is greater than or equal to I ₂ And the reverse starting abnormality is indicated, and the machine is stopped for manual investigation.

According to the utility model, a bulk material conveying device is arranged below a bulk material outlet of a hood and is connected with a impurity removing unit, coal gangue and impurities falling from the bulk material outlet are conveyed to the impurity removing unit, the impurities in the coal gangue are taken out, and the rest coal gangue is returned to a crushing unit for crushing.

In the utility model, the roller teeth are arranged on the roller shaft, the material hooking part is arranged on the roller teeth, and the bulk material is removed in time through the material hooking part, so that the situation that the bulk material is clamped between two rollers when the roller shaft is reversed is prevented.

In the utility model, a plurality of crushing units are arranged side by side, and the hood is provided with a corresponding feed inlet, a finished product outlet and a bulk cargo outlet, so that the crushing efficiency is improved. Meanwhile, a guide plate is arranged in the hood to prevent bulk materials from falling into a finished product outlet, a guide groove is arranged above the hood to receive coal gangue conveyed by an upstream decarburization device.

In the present utility model, impurities refer not only to the components of the decarburization device such as grate bars, heat insulators, wear-resistant irons, etc., but also to other impurities with high hardness which may be present.

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

1. according to the double-roller crusher provided by the utility model, whether the unbreakable bulk materials exist or not is identified and judged by detecting the rotating speed or the current in the running process of the crushing unit, and the bulk materials are reversely rotated to the bulk material outlet in a roll shaft reverse rotation mode, so that manual intervention is not needed, the production continuity is ensured, the equipment faults are reduced, and the service life of the equipment is prolonged. Meanwhile, the large materials are separated, so that the quality of broken finished products is guaranteed.

2. According to the double-roller crusher provided by the utility model, the uncrushable massive materials at the bulk outlet and the coal gangue are transported to the impurity removing unit, and the residual coal gangue is transported to the feed inlet of the hood again after the massive materials are removed, so that the yield of crushed finished products is ensured.

Drawings

Fig. 1 is a schematic structural view of a twin roll crusher according to the present utility model.

Fig. 2 is a schematic diagram of an internal structure of a twin roll crusher according to the present utility model.

Fig. 3 is a schematic structural view of a twin roll crusher with a impurity removing device according to the present utility model.

Fig. 4 is a schematic structural view of a roller tooth in a double-roller crusher according to the present utility model.

Fig. 5 is a schematic structural view of a double-roller crusher with a bin and a guide chute.

Fig. 6 is a top view of a roll tooth in a twin roll crusher according to the present utility model.

Fig. 7 is a schematic diagram of a material flow direction of the double-roller crusher in normal operation.

Fig. 8 is a schematic diagram of a flow direction of a material when a double-roll crusher detects that the material contains uncrushable massive materials.

Fig. 9 is a flow chart of operation of a twin roll crusher provided by the present utility model.

Reference numerals: 1: a crushing unit; 101: a first roller shaft; 102: a second roller shaft; 103: roller teeth; 104: a hooking part; 2: a blocking detection device; 3: a driving device; 4: a hood; 401: a feed inlet; 402: a finished product outlet; 403: a bulk outlet; 404: a material guide plate; 5: a impurity removing device; 6: a storage bin; 7: a guide groove; s1: a first bulk conveying device; s2: and a second bulk conveying device.

Detailed Description

The following examples illustrate the technical aspects of the utility model, and the scope of the utility model claimed includes but is not limited to the following examples.

A twin roll crusher comprises a crushing unit 1, a jam detection unit 2 and a drive unit 3. The crushing unit 1 comprises a first roller shaft 101 and a second roller shaft 102 arranged immediately adjacent and side by side. The driving unit 3 is connected to the first roller shaft 101 and the second roller shaft 102 at the same time, and drives the first roller shaft 101 and the second roller shaft 102 to rotate relatively in opposite directions, respectively. The jam detecting unit 2 is connected to both the first roller shaft 101 and the second roller shaft 102 and detects and controls the operation states of the first roller shaft 101 and the second roller shaft 102 in real time.

Preferably, the crusher further comprises a hood 4. The hood 4 is a rectangular or cylindrical semi-closed structure with a cavity penetrating through the upper side and the lower side. The first roller shaft 101 and the second roller shaft 102 are each provided inside the hood 4, and both ends of the first roller shaft 101 and the second roller shaft 102 are each mounted on opposite side walls of the hood 4. The driving unit 3 and the jam detecting unit 2 are both provided outside the hood 4, and are connected to the ends of the first roller shaft 101 and the second roller shaft 102.

Preferably, the hood 4 has a closed rectangular or cylindrical structure, a feed inlet 401 is formed on the upper surface of the hood 4, and a product outlet 402 and a bulk outlet 403 are formed on the lower bottom surface thereof. The feed port 401 is located directly above the first roller shaft 101 and the second roller shaft 102. The finished product outlet 402 is located directly below the primary roller shaft 101 and the secondary roller shaft 102. The bulk outlet 403 is provided on both sides of the finished product outlet 402.

Preferably, the crusher further comprises a de-mixing unit 5. The two bulk material outlets 403 are connected with the feed inlet of the impurity removing unit 5 through the first bulk material conveying device S1, and the discharge outlet of the impurity removing unit 5 is connected with the feed inlet 401 of the hood 4 through the second bulk material conveying device S2.

Preferably, the surfaces of the first roller shaft 101 and the second roller shaft 102 are provided with raised roller teeth 103, and the roller teeth are uniformly distributed on the surfaces of the first roller shaft 101 and the second roller shaft 102. The teeth 103 on the surface of the first roller shaft 101 are staggered with the teeth 103 on the surface of the second roller shaft 102.

Preferably, the teeth 103 are provided with a hooking portion 104. When the first roller shaft 101 and the second roller shaft 102 normally rotate, one end of the hooking portion 104 is fixed to the tip of the roller tooth 103 and is disposed on one side away from the rotation direction, and the other end extends in a direction away from the roller tooth 103. The hooking portion 104 is used for removing the material between the first roller 101 and the second roller 102 when the first roller 101 and the second roller 102 are rotated to the outside.

Preferably, the hooking portions 104 are disposed perpendicular to the teeth 103.

Preferably, the crusher comprises a plurality of crushing units 1, wherein the crushing units 1 are arranged side by side, and each crushing unit 1 is connected with an independent blockage detection unit 2 and a driving unit 3. Each crushing unit 1 is correspondingly provided with a feed inlet 401, a finished product outlet 402 and two bulk material outlets 403, and the same bulk material outlet 403 is shared between any adjacent crushing units 1.

Preferably, the blocking detecting unit 2 is a current detecting device or a roller shaft rotation speed detecting device.

Preferably, a bin 6 is disposed above the feed inlet 401, the bin 6 is a conical structure with an opening at the bottom and the top, and the opening at the bottom corresponds to the feed inlet 401. A guide chute 7 is arranged above the top opening of the storage bin 6.

Preferably, a baffle 404 is provided at the bulk outlet 403 and the product outlet 402.

Claims

1. A twin roll crusher, characterized in that: the crusher comprises a crushing unit (1), a blocking detection unit (2) and a driving unit (3); the crushing unit (1) comprises a first roll shaft (101) and a second roll shaft (102) which are arranged in close proximity and side by side; the driving unit (3) is simultaneously connected with the first roll shaft (101) and the second roll shaft (102) and drives the first roll shaft (101) and the second roll shaft (102) to rotate relatively in opposite directions respectively; the blocking detection unit (2) is simultaneously connected with the first roll shaft (101) and the second roll shaft (102) and detects and controls the running states of the first roll shaft (101) and the second roll shaft (102) in real time;

the crusher further comprises a hood (4); the hood (4) is of a rectangular or cylindrical semi-closed structure with cavities penetrating through the upper side and the lower side; the first roll shaft (101) and the second roll shaft (102) are arranged inside the hood (4), and two ends of the first roll shaft (101) and the second roll shaft (102) are respectively arranged on two opposite side walls of the hood (4); the driving unit (3) and the blocking detection unit (2) are arranged outside the hood (4) and are connected with the ends of the first roll shaft (101) and the second roll shaft (102).

2. The twin roll crusher of claim 1, wherein: the machine cover (4) is of a closed rectangular or cylindrical structure, a feed inlet (401) is formed in the upper surface of the machine cover (4), and a finished product outlet (402) and a bulk cargo outlet (403) are formed in the lower bottom surface of the machine cover; the feed inlet (401) is positioned right above the first roll shaft (101) and the second roll shaft (102); the finished product outlet (402) is positioned right below the first roll shaft (101) and the second roll shaft (102); the bulk material outlets (403) are arranged on both sides of the finished product outlet (402).

3. The twin roll crusher of claim 2, wherein: the crusher also comprises a impurity removal unit (5); the two bulk cargo outlets (403) are connected with the feed inlet of the impurity removing unit (5) through the first bulk cargo conveying device (S1), and the discharge outlet of the impurity removing unit (5) is connected with the feed inlet (401) of the hood (4) through the second bulk cargo conveying device (S2).

4. A twin roll crusher as defined in claim 3, in which: the surfaces of the first roll shaft (101) and the second roll shaft (102) are respectively provided with raised roll teeth (103), and the roll teeth are uniformly distributed on the surfaces of the first roll shaft (101) and the second roll shaft (102); the roller teeth (103) on the surface of the first roller shaft (101) are staggered with the roller teeth (103) on the surface of the second roller shaft (102).

5. The twin roll crusher of claim 4, wherein: the roller teeth (103) are provided with a material hooking part (104); when the first roll shaft (101) and/or the second roll shaft (102) normally rotate, one end of the hooking part (104) is fixed at the top end of the roll teeth (103) and is arranged at one side far away from the rotating direction, and the other end extends in the direction far away from the roll teeth (103); the material hooking part (104) is used for removing materials between the first roll shaft (101) and the second roll shaft (102) when the first roll shaft (101) and the second roll shaft (102) rotate outwards.

6. The twin roll crusher of claim 5, wherein: the material hooking part (104) is arranged perpendicular to the roller teeth (103).

7. The twin roll crusher of claim 5, wherein: the crusher comprises a plurality of crushing units (1), wherein the crushing units (1) are arranged side by side, and each crushing unit (1) is connected with an independent blocking detection unit (2) and a driving unit (3); each crushing unit (1) is correspondingly provided with a feed inlet (401), a finished product outlet (402) and two bulk material outlets (403), and the same bulk material outlet (403) is shared between any two adjacent crushing units (1).

8. The twin roll crusher of claim 7, wherein: the blocking detection unit (2) is a current detection device or a roll shaft rotating speed detection device.

9. The twin roll crusher of claim 8, wherein: a feed bin (6) is arranged above the feed inlet (401), the feed bin (6) is of a conical structure with an opening at the bottom and the top, and the opening at the bottom corresponds to the feed inlet (401); a guide chute (7) is arranged above the top opening of the storage bin (6).

10. The twin roll crusher according to any one of claims 3-9, characterized in that: and a deflector (404) is arranged at the bulk outlet (403) and the finished product outlet (402).