Negative pressure suction type pulverized coal sampling device

Abstract

The utility model relates to the technical field of pulverized coal sampling devices, and discloses a negative pressure suction type pulverized coal sampling device which comprises a pneumatic cylinder, a plurality of pistons are fixedly connected to the driving end of the pneumatic cylinder, a first connecting pipe is slidably connected to the outer portions of the pistons, and a second connecting pipe is fixedly connected to one end of the first connecting pipe. Two fixing rings are fixedly connected to the inner wall of the second connecting pipe, a sliding way is formed in the inner wall of each fixing ring, a sliding plate is slidably connected to the inner wall of each sliding way, and a connecting assembly is slidably connected to the bottom of the second connecting pipe. According to the utility model, after pulverized coal enters the connecting pipe II through the feed opening, the pneumatic cylinder is started, the driving end of the pneumatic cylinder drives the plurality of pistons to do reciprocating rectilinear motion in the connecting pipe I, the sliding plate slides along the slideway on the inner wall of the fixing ring under the constraint of negative pressure suction force and a mechanical structure, and the sliding block is driven by the connecting rod to synchronously move, so that the pulverized coal in the feed opening is extracted; and sampling operation is completed.

Description

A negative pressure suction coal powder sampling device Technical Field

[0001] This utility model relates to the technical field of coal powder sampling devices, and in particular to a negative pressure suction coal powder sampling device. Background Technology

[0002] In industries such as coal mining, thermal power generation, and coal chemical industry, coal powder sampling is a key step in monitoring the production process and controlling product quality.

[0003] Existing sampling devices often suffer from poor compatibility and inadequate sealing when connected to pipelines of different specifications, leading to coal dust leakage and the introduction of external impurities, which pollutes the environment and affects the authenticity of the samples.

[0004] Traditional coal powder sampling methods mostly rely on manual sampling, which has many drawbacks. Manual sampling is inefficient, cannot meet the real-time monitoring needs of continuous production, and is easily affected by human factors, resulting in samples lacking representativeness and affecting the accuracy of subsequent quality analysis. Therefore, a negative pressure suction coal powder sampling device is proposed to solve the above problems. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a negative pressure suction coal powder sampling device, which aims to improve the problem of low accuracy of manual sampling in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A negative pressure suction coal powder sampling device includes a pneumatic cylinder. A plurality of pistons are fixedly connected to the driving end of the pneumatic cylinder. A connecting pipe 1 is slidably connected to the outside of the pistons. A connecting pipe 2 is fixedly connected to one end of the connecting pipe 1. Two fixing rings are fixedly connected to the inner wall of the connecting pipe 2. A slide is formed on the inner wall of the fixing rings. A sliding plate is slidably connected to the inner wall of the slide. A connecting component is slidably connected to the bottom of the connecting pipe 2.

[0008] As a further description of the above technical solution:

[0009] The connecting assembly includes a sliding ring, the outer side of which is slidably connected to the outside of the second connecting tube. A spring is fixedly connected to the outside of the second connecting tube, a sealing ring is fixedly connected to the inner wall of the second connecting tube, and a connecting tube is slidably connected to the inner wall of the second connecting tube.

[0010] As a further description of the above technical solution:

[0011] The inner wall of the second connecting pipe is rotatably connected to a ball bearing, and the outer side of the ball bearing is slidably connected to the outside of the connecting pipe.

[0012] As a further description of the above technical solution:

[0013] A limiting ring is fixedly connected to the outside of the second connecting pipe, and the outside of the sliding ring is in contact with the outside of the limiting ring;

[0014] As a further description of the above technical solution:

[0015] The inner wall of the slip ring is slidably connected to the outside of the sealing ring, and the inner wall of the slip ring is slidably connected to the outside of the ball bearing.

[0016] As a further description of the above technical solution:

[0017] A connecting rod is fixedly connected to the bottom of the skateboard, and a slider is fixedly connected to the other end of the connecting rod. The outer side of the slider is slidably connected to the inner wall of the fixed ring, and the outer side of the skateboard is in contact with the inner wall of the slide.

[0018] As a further description of the above technical solution:

[0019] The top of the second connecting pipe is fixedly connected to a discharge port, and the outside of the connecting pipe is slidably connected to the inner wall of the sealing ring.

[0020] As a further description of the above technical solution:

[0021] The pneumatic cylinder is externally fixedly connected to a fixing block, and the connecting pipe is externally fixedly connected to the inner wall of the fixing block.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, when the coal powder enters the connecting pipe 2 through the feed port, the pneumatic cylinder is activated. Its drive end drives multiple pistons to perform reciprocating linear motion in the connecting pipe 1. Under the negative pressure suction and mechanical structure constraint, the slide plate slides along the slide rail on the inner wall of the fixed ring. The connecting rod drives the slider to move synchronously, thereby extracting the coal powder in the feed port. Under the action of negative pressure, it falls through the connecting pipe 2 and is transported to the connecting pipe to complete the sampling operation.

[0024] 2. In this utility model, regarding connection stability, the slip ring, in conjunction with the spring's rebound force, can tightly fix the external pipe, ensuring that it will not loosen due to vibration or other factors during sampling; the sealing ring fits tightly with the connecting pipe, forming an effective seal to prevent coal dust leakage and the entry of outside air, ensuring sampling accuracy. Simultaneously, the ball bearing-assisted slip ring allows for flexible adjustment, enabling the device to quickly adapt to pipes of different specifications, enhancing the equipment's versatility and applicability in complex operating environments such as coal mines. Attached Figure Description

[0025] Figure 1 is a three-dimensional schematic diagram of a negative pressure suction coal powder sampling device proposed in this utility model;

[0026] Figure 2 is a schematic diagram of the connecting pipe of a negative pressure suction coal powder sampling device proposed in this utility model.

[0027] Figure 3 is a schematic diagram of the connecting pipe 2 of a negative pressure suction coal powder sampling device proposed in this utility model.

[0028] Figure 4 is an enlarged view of point A in Figure 3.

[0029] Legend:

[0030] 1. Pneumatic cylinder; 2. Piston; 3. Connecting pipe one; 4. Slide rail; 5. Slide plate; 6. Connecting rod; 7. Slider; 8. Connecting pipe two; 9. Sealing ring; 10. Spring; 11. Sliding ring; 12. Rotating ball; 13. Limiting ring; 14. Connecting pipe; 15. Fixing block; 16. Discharge port; 17. Fixing ring. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Referring to Figures 1 and 3, one embodiment of this utility model is provided: a negative pressure suction coal powder sampling device, including a pneumatic cylinder 1. The pneumatic cylinder 1 serves as the power core of the entire sampling device, capable of stably outputting driving force and providing reliable power support for the sampling process. Multiple pistons 2 are fixedly connected to the driving end of the pneumatic cylinder 1. Under the drive of the pneumatic cylinder 1, the pistons 2 can reciprocate within the connecting pipe 1 3, thereby generating negative pressure suction. The connecting pipe 1 3 is slidably connected to the outside of the pistons 2. The connecting pipe 1 3 provides a guide track for the movement of the pistons 2 and also serves as a channel for negative pressure transmission. A connecting pipe 2 8 is fixedly connected to one end of the connecting pipe 1 3, which serves as a connection and transition.

[0033] The negative pressure and coal powder transmitted by connecting pipe 1 3 are transported to the subsequent structure. The inner wall of connecting pipe 2 8 is fixedly connected to two fixing rings 17. The fixing rings 17 provide a foundation for the installation and fixation of components such as slider 7, ensuring their stable operation. The inner wall of the fixing rings 17 is provided with a slide 4. The slide 4 provides a precise path for the sliding of the slide plate 5, ensuring the accuracy of the sampling operation. The slide plate 5 is slidably connected to the inner wall of the slide 4. Under the action of negative pressure and mechanical transmission, the slide plate 5 can move in the slide 4, thereby driving the relevant components to complete the sampling action. The bottom of connecting pipe 2 8 is slidably connected to a connecting component. The connecting component can realize the flexible connection between the device and the external pipeline, while providing sealing and fixing functions.

[0034] A connecting rod 6 is fixedly connected to the bottom of the slide plate 5. The connecting rod 6 is used to connect the slide plate 5 and the slider 7, and transmit the movement of the slide plate 5 to the slider 7. The other end of the connecting rod 6 is fixedly connected to the slider 7. Under the drive of the slide plate 5, the slider 7 can slide on the inner wall of the fixed ring 17, thereby realizing the extraction of coal powder in the feed port 16. The outside of the slider 7 is slidably connected to the inner wall of the fixed ring 17, and the outside of the slide plate 5 is in contact with the inner wall of the slide rail 4. This structural design ensures the stability and accuracy of the movement of the slider 7 and the slide plate 5.

[0035] Referring to Figures 1, 3, and 4, the connecting assembly includes a sliding ring 11, which can slide outside the connecting pipe 2 8. The sliding operation can adjust the connection state between the device and the external pipeline. The external sliding connection of the sliding ring 11 is to the outside of the connecting pipe 2 8. A spring 10 is fixedly connected to the outside of the connecting pipe 2 8. The spring 10 provides a rebound force for the sliding ring 11. When connecting to the external pipeline, the rebound force of the spring 10 can make the sliding ring 11 tightly fix the pipeline, enhancing the stability of the connection. A sealing ring 9 is fixedly connected to the inner wall of the connecting pipe 2 8. The sealing ring 9 can effectively prevent coal powder leakage and external air entry, ensuring the sealing and accuracy of the sampling process. A connecting pipe 14 is slidably connected to the inner wall of the connecting pipe 2 8. The connecting pipe 14 is used to dock with the external pipeline to realize the transportation and transfer of coal powder.

[0036] The inner wall of the connecting pipe 2 8 is rotatably connected with a ball bearing 12. The ball bearing 12 can rotate flexibly on the inner wall of the connecting pipe 2 8. Driven by the sliding ring 11, the connected pipe can be fixed and adjusted, improving the adaptability of the device. The outer side of the ball bearing 12 is slidably connected to the outside of the connecting pipe 14. The presence of the ball bearing 12 makes the connecting pipe 14 smoother during connection and movement.

[0037] The external of the connecting pipe 2 8 is fixedly connected to a limiting ring 13. The limiting ring 13 is used to limit the sliding range of the sliding ring 11 and prevent it from sliding excessively and leaving the normal working position. The outside of the sliding ring 11 is in contact with the outside of the limiting ring 13 to ensure that the sliding ring 11 slides within the specified range.

[0038] Referring to Figures 1 to 3, the inner wall of the sliding ring 11 is slidably connected to the outside of the sealing ring 9. This design allows the sliding ring 11 to maintain the sealing effect of the sealing ring 9 during the sliding process. The inner wall of the sliding ring 11 is slidably connected to the outside of the rotating ball 12. The sliding ring 11, through its cooperation with the rotating ball 12, achieves the fixation and adjustment of the connecting pipe.

[0039] The top of the connecting pipe 2 8 is fixedly connected to the discharge port 16, which is the inlet for coal powder to enter the device, facilitating the feeding and sampling of coal powder. The outside of the connecting pipe 14 is slidably connected to the inner wall of the sealing ring 9. The sealing ring 9 can seal the connecting pipe 14 to prevent coal powder from leaking during the conveying process.

[0040] The pneumatic cylinder 1 is externally fixedly connected to a fixing block 15, which is used to fix the pneumatic cylinder 1 and keep it stable during operation. The connecting pipe 3 is externally fixedly connected to the inner wall of the fixing block 15. The fixing block 15 also provides stable installation support for the connecting pipe 3, ensuring the stability of the entire device structure.

[0041] Working principle: When pulverized coal enters the connecting pipe 2 8 through the feed port 16, the pneumatic cylinder 1 is activated. Its drive end drives multiple pistons 2 to reciprocate linearly within the connecting pipe 1 3. The movement of the pistons 2 creates a negative pressure environment within the connecting pipe 1 3, which is then transmitted to the vicinity of the feed port 16 through the connecting pipe 2 8. ， At this time, under the negative pressure suction and mechanical structure constraint, the slide plate 5 slides along the slide rail 4 on the inner wall of the fixed ring 17, and drives the slider 7 to move synchronously through the connecting rod 6, thereby extracting the coal powder in the feed port 16, and under the action of negative pressure, it falls through the connecting pipe 2 8 and is transported to the connecting pipe 14 to complete the sampling operation.

[0042] When facing coal powder sampling needs under different operating conditions, the connection between the device and the external pipeline can be adjusted by sliding the sliding ring 11. During the sliding process of the sliding ring 11, the rotating ball 12 drives the connecting pipe 14 to rotate along the inner wall of the connecting pipe 8, so that the connecting pipe 14 is precisely connected with the external pipeline. During this process, the rebound force provided by the spring 10 makes the sliding ring 11 tightly fix the external pipeline, enhancing the connection stability; while the sealing ring 9 tightly fits the connecting pipe 14, effectively preventing coal powder leakage and the entry of outside air, ensuring the accuracy and sealing of the sampling.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A negative pressure suction type coal powder sampling device, comprising a pneumatic cylinder (1), characterized in that: The driving end of the pneumatic cylinder (1) is fixedly connected to multiple pistons (2). The piston (2) is slidably connected to a connecting pipe (3). One end of the connecting pipe (3) is fixedly connected to a connecting pipe (8). The inner wall of the connecting pipe (8) is fixedly connected to two fixing rings (17). The inner wall of the fixing rings (17) is provided with a slide (4). The inner wall of the slide (4) is slidably connected to a sliding plate (5). The bottom of the connecting pipe (8) is slidably connected to a connecting component.

2. The negative pressure suction type coal powder sampling device according to claim 1, characterized in that: The connecting assembly includes a sliding ring (11), the outside of which is slidably connected to the outside of the connecting tube two (8), a spring (10) is fixedly connected to the outside of the connecting tube two (8), a sealing ring (9) is fixedly connected to the inner wall of the connecting tube two (8), and a connecting tube (14) is slidably connected to the inner wall of the connecting tube two (8).

3. The negative pressure suction type pulverized coal sampling device according to claim 2, characterized in that: The inner wall of the connecting pipe 2 (8) is rotatably connected to a bead (12), and the outer side of the bead (12) is slidably connected to the outside of the connecting pipe (14).

4. The negative pressure suction type pulverized coal sampling device according to claim 2, characterized in that: The outer side of the connecting pipe (8) is fixedly connected to a limiting ring (13), and the outer side of the sliding ring (11) is in contact with the outer side of the limiting ring (13).

5. The negative pressure suction type pulverized coal sampling device according to claim 3, characterized in that: The inner wall of the sliding ring (11) is slidably connected to the outside of the sealing ring (9), and the inner wall of the sliding ring (11) is slidably connected to the outside of the ball bearing (12).

6. The negative pressure suction type pulverized coal sampling device according to claim 1, characterized in that: The bottom of the slide plate (5) is fixedly connected to a connecting rod (6), and the other end of the connecting rod (6) is fixedly connected to a slider (7). The outside of the slider (7) is slidably connected to the inner wall of the fixed ring (17), and the outside of the slide plate (5) is in contact with the inner wall of the slide rail (4).

7. The negative pressure suction type coal powder sampling device according to claim 2, characterized in that: The top of the connecting pipe 2 (8) is fixedly connected to the discharge port (16), and the outside of the connecting pipe (14) is slidably connected to the inner wall of the sealing ring (9).

8. The negative pressure suction type coal powder sampling device according to claim 1, characterized in that: The pneumatic cylinder (1) is externally fixedly connected to a fixing block (15), and the connecting pipe (3) is externally fixedly connected to the inner wall of the fixing block (15).

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