Grinding machine for coking coal sample preparation

Abstract

The utility model discloses a grinding machine for preparing a coking coal sample, and relates to the technical field of grinding equipment, in particular to the grinding machine for preparing the coking coal sample, which comprises a rack, a feeding mechanism is arranged at a position close to the upper part of the rack, and a grinding mechanism is arranged in the rack close to the middle part; and a discharging mechanism is arranged in the position, close to the bottom, of the interior of the rack, the bottom end of the feeding mechanism is fixedly connected with a feeding pipe assembly, and a discharging pipe assembly is fixedly installed at the bottom end of the grinding mechanism. According to the grinding machine for coking coal sample preparation, through the arrangement of the feeding assembly and the vibration feeding assembly, the feeding speed can be conveniently controlled according to different coal types, uniform and slow discharging can be conducted, a certain gap is reserved between the bottom of the grinding bowl body and the bottom plate, and direct discharging of the granularity meeting the requirement is facilitated; the unmatched particle size can be left in the grinding bowl body to be continuously ground until the particle size meets the requirement, and the sample can be conveniently collected and taken out through the cooperation of the lifting mechanism and the sample barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding equipment, in particular to a grinding machine for coking coal sample preparation. Background Technique

[0002] Coking coal is a kind of bituminous coal. It is customary to collectively refer to the raw coal with certain caking property that can coke under the coking conditions of chamber coke ovens and is used to produce coke of a certain quality as coking coal. According to China's coal classification standard, lean coal, lean coal, coking coal, fat coal, 1 / 3 coking coal, gas fat coal, gas coal, and 1 / 2 medium caking coal in bituminous coal all belong to coking coal. As the name implies, coking coal is mainly used to produce coke and is usually divided into metallurgical coke (including blast furnace coke, foundry coke, ferroalloy coke, etc.), gasification coke, and coke for calcium carbide according to its use. The production of coking coal is directly related to heavy industrial sectors such as metallurgy and coal chemical industry, and some industries such as electric power and city gas.

[0003] The caking index of coal is an index characterizing the caking property of bituminous coal, which reflects the ability of coal to form coke during heating. The measurement method of this index is to mix bituminous coal and standard anthracite and then coke them, and then measure the caking strength of the obtained coke blocks. The measurement of the caking index takes into account various factors, including the degree of coal metamorphism, mineral content, ash content, volatile matter, etc. These factors will affect the caking index of coal. When calculating the caking index, sampling and measurement are usually carried out. The particle size of the sample should meet the international standard requirements (it is required that the particle size of the sample after grinding is less than 0.2 mm, and the proportion of the particle size of 0.1 - 0.2 mm in the sample weight is 20% - 35%). In order to facilitate sample preparation, we propose a grinding machine for coking coal sample preparation. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a grinding machine for coking coal sample preparation, which solves the problems put forward in the above background technique.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: A grinding machine for coking coal sample preparation includes a frame. An inlet mechanism is installed at a position near the upper part of the frame. A grinding mechanism is arranged near the middle inside the frame. An outlet mechanism is arranged near the bottom inside the frame. The bottom end of the inlet mechanism is fixedly connected with an inlet pipe assembly. The bottom end of the grinding mechanism is fixedly installed with an outlet pipe assembly.

[0006] Optionally, the inlet mechanism includes an inlet assembly and a vibrating feeding assembly. The inlet assembly is installed above the top surface of the frame. The vibrating feeding assembly is installed below the inlet assembly. The top end of the inlet pipe assembly is fixedly connected with the bottom end outlet of the vibrating feeding assembly.

[0007] Optionally, the grinding mechanism includes a driving motor, a vibration eccentric component, a grinding cavity component, a grinding block, and a grinding bowl body. A vibration support mechanism is supported at a position near the middle of the frame. The top end of the vibration support mechanism is fixedly connected to the grinding cavity component. The driving motor is installed at the bottom of the middle of the frame. The vibration eccentric component is installed outside the output shaft of the driving motor. The grinding bowl body is installed in the middle of the frame. The grinding block is movably installed inside the grinding bowl body. The discharge port at the bottom end of the grinding bowl body is fixedly connected to the top end of the discharge pipe component. The bottom end of the feed pipe component is connected to the top end of the grinding bowl body.

[0008] Optionally, the discharge mechanism includes a sample bucket and a lifting mechanism. The lifting mechanism is installed at the bottom of the inner cavity of the frame. The sample bucket is installed above the lifting mechanism. The bottom end of the discharge pipe component is located above the sample bucket.

[0009] Optionally, the output shaft of the driving motor extends upward into the inner cavity of the grinding cavity component. The vibration eccentric component is sleeved outside the driving motor. The axis of the vibration eccentric component is located outside the axis of the driving motor.

[0010] The present utility model provides a grinding machine for preparing samples of coking coal, which has the following beneficial effects:

[0011] 1. For this grinding machine for preparing samples of coking coal, through the setting of the feeding component, it is convenient to control the feeding speed according to different coal types. Through the cooperation of the vibration feeding component, uniform and slow feeding can be carried out. By leaving a certain gap between the bottom of the grinding bowl body and the bottom plate, it is convenient for the particles that meet the requirements to be directly discharged. Those that do not meet the requirements will continue to stay inside the grinding bowl body for further grinding until the particle size meets the requirements. Through the cooperation of the lifting mechanism and the sample bucket, it is convenient to collect and take out the samples.

[0012] 2. Different grinding speeds and grinding times are set for different coal types, so that the particle size range of the ground samples meets the national standard requirements (it is required that the particle size of the ground samples is less than 0.2 mm, and the proportion of the particle size of 0.1 - 0.2 mm in the sample weight is 20% - 35%). Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a schematic top view structural diagram of the present utility model;

[0015] Figure 3 is the present utility model Figure 2 schematic A - A structural diagram in;

[0016] Figure 4 is a schematic side view structural diagram of the present utility model.

[0017] In the figure: 1. Frame; 2. Feeding assembly; 3. Vibrating feeding assembly; 4. Dust removal assembly; 5. Grinding bowl body; 6. Grinding block; 7. Grinding cavity assembly; 8. Vibration eccentric assembly; 9. Driving motor; 10. Sample bucket; 11. Lifting mechanism; 13. Feed pipe assembly; 14. Discharge pipe assembly; 15. Vibration support mechanism. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] Please refer to Figures 1 to 4 , the present invention provides a technical solution: a grinding machine for preparing coking coal samples, including a frame 1. A feeding mechanism is installed at a position near the upper part of the frame 1, and a grinding mechanism is arranged near the middle inside the frame 1. The feeding mechanism can feed materials slowly and evenly, can feed materials slowly, and at the same time can control the feeding speed. The setting of the grinding mechanism plays a role in grinding, and at the same time can screen the particle size of the ground particles. The particles that do not meet the requirements will continue to be ground. The setting of the discharging mechanism plays an auxiliary discharging role. A discharging mechanism is arranged near the bottom inside the frame 1. The bottom end of the feeding mechanism is fixedly connected to a feed pipe assembly 13, and the bottom end of the grinding mechanism is fixedly installed with a discharge pipe assembly 14. The settings of the feed pipe assembly 13 and the discharge pipe assembly 14 play a role in conveying materials. The setting of the dust removal assembly 4 can assist in dust removal and can perform dust removal during the feeding and discharging processes.

[0020] The feeding mechanism includes a feeding assembly 2 and a vibrating feeding assembly 3. The feeding assembly 2 is installed above the top surface of the frame 1, and the vibrating feeding assembly 3 is installed below the feeding assembly 2. The top end of the feed pipe assembly 13 is fixedly connected to the bottom end discharge port of the vibrating feeding assembly 3. The coal sample to be ground is thrown into the inner cavity of the feeding assembly 2 from above the feeding assembly 2, and then the coal sample will enter the inner cavity of the vibrating feeding assembly 3. Through the vibration of the vibrating feeding assembly 3, the coal sample slowly and evenly enters the inner cavity of the grinding bowl body 5 through the feed pipe assembly 13.

[0021] The grinding mechanism includes a driving motor 9, a vibration eccentric component 8, a grinding cavity component 7, a grinding block 6, and a grinding bowl body 5. A vibration support mechanism 15 is supported at a position near the middle of the frame 1. The top end of the vibration support mechanism 15 is fixedly connected to the grinding cavity component 7. The output shaft of the driving motor 9 extends upward into the inner cavity of the grinding cavity component 7. The vibration eccentric component 8 is sleeved outside the driving motor 9. The axis of the vibration eccentric component 8 is located outside the axis of the driving motor 9. By controlling the rotation of the vibration eccentric component 8 with the driving motor 9, the vibration eccentric component 8 drives the grinding cavity component 7, the grinding bowl body 5, and the grinding block 6 to perform a rotary motion. At the same time, the vibration support mechanism 15 drives the grinding cavity component 7 to vibrate. For different coal types, different speeds and grinding times are set for the driving motor 9 so that the ground sample meets the particle size range required by the national standard (it is required that the particle size of the ground sample is less than 0.2 mm, and the proportion of the particle size of 0.1 - 0.2 mm in the sample weight is 20% - 35%). The sample with qualified particle size after grinding will be discharged downward through the grinding bowl body 5 into the inside of the discharge pipe assembly 14. The driving motor 9 is installed at the bottom in the middle of the frame 1. The vibration eccentric component 8 is installed outside the output shaft of the driving motor 9. The grinding bowl body 5 is installed in the middle of the frame 1. The grinding block 6 is movably installed inside the grinding bowl body 5. The discharge port at the bottom end of the grinding bowl body 5 is fixedly connected to the top end of the discharge pipe assembly 14. The bottom end of the feed pipe assembly 13 is connected to the top end of the grinding bowl body 5. The cooperation of the feed pipe assembly 13 and the discharge pipe assembly 14 can guide the transportation of coking coal, facilitate the use of the equipment, and improve the practicability of the equipment.

[0022] The discharging mechanism includes a sample bucket 10 and a lifting mechanism 11. The lifting mechanism 11 is installed at the bottom inside the frame 1. The sample bucket 10 is installed above the lifting mechanism 11. The bottom end of the discharge pipe assembly 14 is located above the sample bucket 10. The sample with qualified particle size after grinding will be discharged downward through the grinding bowl body 5 into the inside of the discharge pipe assembly 14 and then discharged into the inside of the sample bucket 10 through the discharge pipe assembly 14. Subsequently, the lifting mechanism 11 is controlled to retract, and then the sample bucket 10 is controlled to descend. The dust removal component 4 can suck dust during the feeding and discharging processes.

[0023] In summary, when using the grinding machine for preparing coking coal samples, first, the coal samples to be ground are thrown into the inner cavity of the feeding assembly 2 from above the feeding assembly 2. Subsequently, the coal samples will enter the inner cavity of the vibrating feeding assembly 3. Through the vibration of the vibrating feeding assembly 3, the coal samples are slowly and evenly fed downward through the feeding pipe assembly 13 into the inner cavity of the grinding bowl body 5. Then, the upper part of the feeding assembly 2 is closed. By controlling the rotation of the vibration eccentric assembly 8 with the driving motor 9, the vibration eccentric assembly 8 drives the grinding cavity assembly 7, the grinding bowl body 5, and the grinding block 6 to perform a circular rotation. At the same time, the vibration support mechanism 15 drives the grinding cavity assembly 7 to vibrate. For different coal types, different speeds and grinding times are set for the driving motor 9 to make the ground samples reach the particle size range required by the national standard (it is required that the particle size of the ground samples is less than 0.2 mm, and the proportion of the particle size of 0.1 - 0.2 mm in the sample weight is 20% - 35%). The samples with qualified particle size after grinding will be discharged downward through the grinding bowl body 5 into the inside of the discharge pipe assembly 14 and then discharged into the inside of the sample bucket 10 through the discharge pipe assembly 14. Subsequently, the lifting mechanism 11 is controlled to retract, and then the sample bucket 10 is controlled to descend. The dust removal assembly 4 can suck dust during the feeding and discharging processes, and that's it.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Moreover, the terms "including", "comprising" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0025] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A grinder for preparing samples of coking coal, comprising a frame (1), characterized in that: An inlet mechanism is installed at a position near the upper part of the frame (1). A grinding mechanism is arranged near the middle inside the frame (1). A discharging mechanism is arranged near the bottom inside the frame (1). The bottom end of the inlet mechanism is fixedly connected to a feed pipe assembly (13). The bottom end of the grinding mechanism is fixedly installed with a discharge pipe assembly (14). The inlet mechanism includes an inlet assembly (2) and a vibrating feeding assembly (3). The inlet assembly (2) is installed above the top surface of the frame (1). The vibrating feeding assembly (3) is installed below the inlet assembly (2). The top end of the feed pipe assembly (13) is fixedly connected to the bottom discharging end of the vibrating feeding assembly (3).

2. The grinding machine for coking coal sample preparation according to claim 1, wherein: The grinding mechanism includes a driving motor (9), a vibrating eccentric assembly (8), a grinding cavity assembly (7), grinding blocks (6), and a grinding bowl body (5). A vibrating support mechanism (15) is supported at a position near the middle of the frame (1). The top end of the vibrating support mechanism (15) is fixedly connected to the grinding cavity assembly (7). The driving motor (9) is installed at the bottom of the middle of the frame (1). The vibrating eccentric assembly (8) is installed outside the output shaft of the driving motor (9). The grinding bowl body (5) is installed in the middle of the frame (1). The grinding blocks (6) are movably installed inside the grinding bowl body (5). The discharging port at the bottom end of the grinding bowl body (5) is fixedly connected to the top end of the discharge pipe assembly (14). The bottom end of the feed pipe assembly (13) is connected to the top end of the grinding bowl body (5).

3. A grinder for preparing coking coal samples according to claim 1, characterized in that: The discharging mechanism includes a sample bucket (10) and a lifting mechanism (11). The lifting mechanism (11) is installed at the bottom of the inner cavity of the frame (1). The sample bucket (10) is installed above the lifting mechanism (11). The bottom end of the discharge pipe assembly (14) is located above the sample bucket (10).

4. A grinder for preparing coking coal samples according to claim 2, characterized in that: The output shaft of the driving motor (9) extends upward into the inner cavity of the grinding cavity assembly (7). The vibrating eccentric assembly (8) is sleeved outside the driving motor (9). The axis of the vibrating eccentric assembly (8) is located outside the axis of the driving motor (9).

Images