A coal automatic sampling machine

Abstract

The utility model belongs to the field of coking, especially relate to a kind of automatic sampling machine of blending coal, including the installation shell being set from top to bottom through, sampling device and the feeding channel for being used to sample outward conveying are equipped on installation shell. Installation shell is located on conveyor for the transportation of blending coal by support leg, sampling device is located above conveyor, and the bottom end of conveying channel is located outside the rack of conveyor. Sampling device can carry out multipoint sampling to material in conveying process on conveyor, and outward conveying is carried out by conveying channel. The utility model is cooperated by sampling device and conveying channel, and the driving device in sampling device drives material poking assembly to rotate in installation shell, and material poking assembly will contact with material on conveying belt intermittently in rotating process, and will push the contacted material into conveying channel, finally, material is conveyed to sample container by conveying channel, and the sampling purpose of material is completed.

Description

Technical Field

[0001] This utility model belongs to the field of coking, and in particular relates to an automatic sampler for blended coal. Background Technology

[0002] In the coking process, to obtain coke that meets specific quality requirements, it is usually necessary to mix various types of coal with different properties in precise blending ratios to form coking blend coal. The quality of the blend coal affects the quality of the coke. Before being fed into the coke oven for coking, the blend coal must be sampled and tested. Currently, when sampling the blend coal, it is transported to the coal tower via a belt conveyor, and sampling personnel use tools to take samples on the operating belt conveyor. This sampling method is inefficient, and the belt is in operation during manual sampling, which poses a safety risk. In addition, the blend coal generates a lot of dust, and personnel may inhale a large amount of dust, affecting their health. Utility Model Content

[0003] The purpose of this invention is to provide an automatic coal sampling machine to solve the technical problems mentioned in the background section.

[0004] To achieve the above objectives, the specific technical solution of this utility model for an automatic coal sampler is as follows: An automatic coal sampling machine includes a mounting shell extending from top to bottom, on which a sampling device and a feeding channel for conveying samples are mounted. The mounting shell is supported by legs on a conveyor for transporting coal, with the sampling device located above the conveyor and the bottom end of the feeding channel located outside the conveyor frame. The sampling device can sample materials on the conveyor at multiple points during transport and convey them outward through the feeding channel. The sampling device includes a material-feeding assembly rotatably mounted inside the mounting shell for sampling materials passing beneath it on the conveyor, and a drive device located outside the mounting shell to operate the material-feeding assembly.

[0005] Furthermore, the material feeding assembly includes a rotating shaft rotatably disposed within the mounting housing. The rotating shaft is arranged along the width direction of the mounting housing, and a connecting rod is provided radially along the middle of the rotating shaft. The bottom end of the connecting rod is provided with a shovel plate whose width is adapted to the internal width of the mounting housing.

[0006] Furthermore, a mounting plate is provided outside the housing, and the drive unit is located on the mounting plate. The drive unit includes a motor and a reducer mounted on the mounting plate, with the reducer output end connected to the rotating shaft and the reducer input end connected to the motor.

[0007] Furthermore, the conveying channel includes a receiving shovel located inside the mounting housing and on one side thereof. The receiving shovel is inclined, and there is a gap between the lowest end of the receiving shovel and the working surface above the conveyor belt. A discharge channel located outside the conveyor support is connected to the upper part of the receiving shovel.

[0008] Furthermore, a protective cover is installed at the bottom of the material feeding channel.

[0009] The automatic coal sampling machine of this utility model has the following advantages: This invention utilizes the combination of a sampling device and a conveying channel. The driving device in the sampling device drives the material feeding component to rotate within the mounting housing. During the rotation, the material feeding component intermittently contacts the material on the conveyor belt below it and pushes the contacted material into the conveying channel. Finally, the material is conveyed to the sample container through the conveying channel, thus completing the sampling purpose. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of an automatic coal sampling machine according to the present invention; Figure 2 This is a schematic diagram of the sampling device of this utility model; Figure 3 This is a schematic diagram of the conveying channel of this utility model.

[0011] Explanation of markings in the diagram: 1. Mounting housing; 2. Rotating shaft; 3. Connecting rod; 4. Shovel plate; 5. Reducer; 6. Motor; 7. Fixing plate; 8. Receiving shovel; 9. Discharge channel; 10. Protective cover; 11. Conveyor belt. Detailed Implementation

[0012] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of an automatic coal sampling machine according to this utility model.

[0013] like Figures 1 to 3 As shown, this utility model discloses an automatic coal sampling machine, comprising a mounting shell 1 extending from top to bottom. The mounting shell 1 is equipped with a sampling device and a feeding channel for conveying samples outwards. The mounting shell 1 is mounted on a conveyor for transporting coal via support legs. The sampling device is located above the conveyor, and the bottom end of the feeding channel is located outside the conveyor frame. The sampling device can sample materials on the conveyor at multiple points during transport and convey them outwards through the feeding channel. The cooperation between the sampling device and the feeding channel achieves automated sampling of materials on the conveyor, saving time and labor and improving work efficiency. Furthermore, operators do not need to approach the operating conveyor belt 11, thus preventing long-term exposure to dust and potential harm to their health.

[0014] Specifically, the sampling device includes a material-feeding assembly rotatably housed within the mounting housing 1, capable of sampling materials passing beneath the conveyor belt, and a drive unit located outside the mounting housing 1 that drives the material-feeding assembly. When the conveyor starts and transports the blended coal, the drive unit is activated. The drive unit outputs power, causing the material-feeding assembly to rotate uniformly or at a set frequency within the mounting housing 1. The rotating material-feeding assembly periodically cuts into the coal flow moving above the conveyor belt 11, collecting a portion of the sample from the moving material. After sampling, the sample is automatically transported to a designated location via a feeding channel, saving time and effort and reducing the labor intensity of workers. Because the material-feeding assembly rotates continuously, it can achieve continuous, multi-point, and equally spaced sampling of the material on the conveyor belt 11, ensuring the representativeness of the sample. It should be noted that, as existing technology, the conveyor belt 11 is concave, and will not be elaborated upon further here.

[0015] like Figure 2 As shown, the material feeding assembly includes a rotating shaft 2 rotatably mounted inside the mounting housing 1, with the shaft 2 positioned along the width of the housing 1. A connecting rod 3 is located radially along the shaft 2 at its center, and a shovel 4 with a width adapted to the internal width of the housing 1 is located at the bottom of the connecting rod 3. The shovel 4 rotates around the axis of the shaft 2, allowing for sampling at each cross-section of the conveyor belt. The collected sample includes most of the material from the center, upper, and lower layers of the cross-section, ensuring that the sample includes material from various points on the end face of the conveyor belt 11, thus better reflecting the average composition of the entire batch of material during testing. Furthermore, the material feeding assembly, consisting of the shaft 2, connecting rod 3, and shovel 4, has a simple structure, low failure rate, and is suitable for stable operation in harsh working conditions, thereby improving the practicality of this sampling machine. When the conveyor is loaded with material, the external drive device is activated, causing the shaft 2 to rotate uniformly along a set direction and speed. As the shaft 2 rotates, the connecting rod 3 and shovel 4 fixed to it move in a circular motion. When the shovel plate 4 rotates downwards and cuts into the material layer on the surface of the conveyor belt 11, it can push a cross-section of material in the width direction of the conveyor belt 11. After scooping up the material, the shovel plate 4 continues to rotate upwards with the rotation of the shaft 2, separating the sample from the main material flow of the conveyor belt 11 and pushing the material to the entrance of the feeding channel. After entering the feeding channel, the sample smoothly slides to the designated collection point outside the conveyor frame under the action of gravity, completing one sampling. The shaft 2 continues to rotate, and the above process is repeated, thereby realizing continuous and automatic timed or frequency sampling.

[0016] Specifically, a fixed plate 7 is provided outside the mounting shell 1, and the drive device is located on the fixed plate 7. The support legs of the mounting shell 1 near the fixed plate 7 support the fixed plate 7. The drive device specifically includes a motor 6 and a reducer 5 mounted on the fixed plate 7. The output end of the reducer 5 is connected to the rotating shaft 2, and the input end of the reducer 5 is connected to the motor 6. The motor 6 is connected to an external power supply via a controller. When it is necessary to sample the material on the conveyor, the motor 6 can be started via the controller. The rotational power of the motor 6 is transmitted to the reducer 5. After the reducer 5 increases the torque and reduces it to a suitable output speed, the output end of the reducer 5 directly drives the rotating shaft 2 to rotate at a uniform speed. It should be noted that the motor 6 is connected to the rotating shaft 2 via the reducer 5. When the shovel 4 comes into contact with the moving material, the material will generate resistance to the reducer 5 through the shovel 4, connecting rod 3, and rotating shaft 2. This resistance acting on the reducer 5 can reduce damage to the motor 6 and improve the service life of the motor 6.

[0017] It is understood that the power control section consisting of motor 6 and reducer 5 in this embodiment can be protected by a dust explosion-proof control box (not shown in the figure). Furthermore, the dust explosion-proof control box also houses an electrical component consisting of circuit breakers, contactors, and motor protectors, which can protect motor 6 from overcurrent, locked rotor, and phase loss. The controller used to control the power system is a programmable logic controller (PLC). Additionally, a proximity switch (not shown in the figure) can be installed on the feeding assembly, and control buttons and a manual / automatic switch are installed on the dust explosion-proof control box. The manual / automatic switch can work with the proximity switch to switch between manual and automatic operation as needed. The automatic control mode allows for quantitative sampling based on the sampling quantity requirements, with the proximity switch monitoring the number of sampler rotations and the PLC setting the sampling interval.

[0018] like Figure 3 As shown, the conveying channel includes a receiving shovel 8 located inside and on one side of the mounting housing 1. The receiving shovel 8 is inclined, and there is a gap between the lowest point of the receiving shovel 8 and the working surface above the conveyor belt 11. A discharge channel 9 located outside the conveyor support is connected to the upper part of the receiving shovel 8. The receiving shovel 8 is arranged along the traveling direction of the shovel plate 4. The top of the receiving shovel 8 is open to provide rotation space for the shovel plate 4. When the shovel plate 4 picks up material from the conveyor belt 11, it pushes the picked-up material into the inclined receiving shovel 8. With the continuous pushing of the shovel plate 4, the material entering the receiving shovel 8 continues to move until it reaches the entrance of the discharge channel 9 and the receiving shovel 8. The sample is then transported to a designated sample collection point outside the conveyor support under the action of gravity. A container for receiving the sample can be placed at the bottom opening of the discharge channel 9, i.e., at the sample collection point.

[0019] Still Figure 3As shown, a protective cover 10 is provided at the bottom of the feeding channel 9. The protective cover 10 can prevent the material falling from the feeding channel 9 from being scattered outside the container.

[0020] Instructions for use: When it is necessary to sample the material on conveyor belt 11 during material transport, motor 6 can be started. Motor 6 drives shaft 2 to rotate via reducer 5, and shaft 2 drives shovel 4 to rotate via connecting rod 3. When shovel 4 rotates downward and cuts into the material layer on the surface of conveyor belt 11, it can push a cross-section of material in the width direction of conveyor belt 11. After shoveling the material, shovel 4 continues to rotate upward with the rotation of shaft 2, separating the sample from the main material flow of conveyor belt 11 and pushing the material to the entrance of the feeding channel. After entering the feeding channel, the sample slides smoothly to the designated collection point outside the conveyor frame under the action of gravity, completing the sampling. By repeating this process, material on conveyor belt 11 can be sampled in batches and at different locations.

[0021] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An automatic coal sampling machine, characterized in that: It includes a mounting shell (1) that runs through from top to bottom, and the mounting shell (1) is equipped with a sampling device and a feeding channel for conveying the sample outward; The mounting shell (1) is mounted on the conveyor for transporting blended coal via outriggers, the sampling device is located above the conveyor, and the bottom end of the conveying channel is located outside the frame of the conveyor. The sampling device can sample materials on the conveyor during transportation at multiple points and transport them outward through the conveying channel; The sampling device includes a material feeding assembly that is rotatably disposed inside the mounting housing (1) and can sample the material passing under it on the conveyor, and a drive device disposed outside the mounting housing (1) to drive the material feeding assembly to work.

2. The automatic coal sampling machine according to claim 1, characterized in that: The material feeding assembly includes a rotating shaft (2) rotatably disposed inside the mounting shell (1). The rotating shaft (2) is arranged along the width direction of the mounting shell (1). A connecting rod (3) is provided in the middle of the rotating shaft (2) radially. The bottom end of the connecting rod (3) is provided with a shovel plate (4) whose width is adapted to the internal width of the mounting shell (1).

3. The automatic coal sampling machine according to claim 2, characterized in that: The mounting housing (1) is provided with a fixing plate (7), and the driving device is located on the fixing plate (7); The drive unit includes a motor (6) and a reducer (5) mounted on a fixed plate (7). The output end of the reducer (5) is connected to the rotating shaft (2), and the input end of the reducer (5) is connected to the motor (6).

4. The automatic coal sampling machine according to claim 3, characterized in that: The conveying channel includes a receiving shovel (8) located inside the mounting shell (1) and on one side thereof. The receiving shovel (8) is inclined and there is a gap between the lowest end of the receiving shovel (8) and the working surface above the conveyor belt (11). The upper part of the receiving shovel (8) is connected to a discharge channel (9) located outside the conveyor support.

5. The automatic coal sampling machine according to claim 4, characterized in that: The bottom end of the feeding channel (9) is provided with a protective cover (10).

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