Coal pile sampling device

Abstract

The invention relates to the technical field of coal sampling devices, in particular to a coal pile sampling device, comprising: a sleeve part comprising an outer pipe barrel with a packaging cover mounted at the top end, and an inner barrel rotatably mounted in the outer pipe barrel; the anti-blocking part comprises a middle shaft seat detachably mounted at the axis of the inner cylinder, crushing rods are rotatably mounted around the middle shaft seat, an insertion cavity is formed in the axis of the middle shaft seat, and sample introduction openings are formed in the periphery of the middle shaft seat; a sampling cylinder is inserted into the insertion cavity; according to the coal pile sampling device, the inner cylinder rotationally arranged in the sleeve part is matched with the crushing rod in the anti-blocking part, so that hardened coal can be broken, blockage is avoided in the sampling process, deep sampling and sampling inspection are facilitated, and the sampling efficiency and quality are better; the arranged sampling cylinder is rotationally installed, the sampling time can be adjusted, sampling can be conducted after a proper depth is reached, sampling can be rapidly completed in the rotating process through the middle shaft seat structure, and the single-time sampling amount can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of coal sampling devices, and particularly relates to a coal pile sampling device. Background Art

[0002] During the production operation of thermal power plants, the accurate detection of coal quality is of great significance for combustion efficiency, pollutant emission control, and the safe and stable operation of units. The coal quality sampling probe is a key device for obtaining representative coal samples. During the sampling process, based on the multi-point principle, coal samples at multiple points inside the coal pile need to be taken to judge the overall coal condition of key indicators such as calorific value and ash content of the coal quality.

[0003] Existing sampling probes mostly rely on manual experience or simple mechanical structures, lacking efficient sampling effects, and are very prone to blockage problems during the sampling process, severely restricting the sampling efficiency and accuracy. Because coal will produce particles of different sizes during mining and transportation, and the coal in the coal bunker is in a state of extrusion and accumulation, larger-sized coal blocks or coal masses that are adhered to each other due to moisture are extremely likely to get stuck at the sampling port of the sampling probe, making it inconvenient to take deep samples. Surface samples are not representative. Therefore, once the sampling port is blocked, sampling needs to be interrupted, the sampling port needs to be cleaned, and sampling needs to be restarted.

[0004] The above problems make the sampling process inconvenient and inefficient, which is not conducive to the overall evaluation of coal quality by thermal power plants. Therefore, it is considered necessary to avoid blocking the probe during the sampling process to ensure the sampling efficiency and quality. In view of this, we propose a coal pile sampling device. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies mentioned in the above background art and provide a coal pile sampling device.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A coal pile sampling device includes:

[0008] A sleeve part, including an outer tube with a sealing cover installed at the top, and an inner tube is rotatably installed inside the outer tube.

[0009] An anti-blocking part, including an intermediate shaft seat detachably installed at the center of the inner tube. A crushing rod for crushing the blocked coal material in front is rotatably installed around the intermediate shaft seat. An insertion cavity is provided at the center of the intermediate shaft seat, and a sample inlet opening communicating with the insertion cavity is provided around the intermediate shaft seat.

[0010] A sampling tube for sampling and collecting coal material is inserted into the insertion cavity.

[0011] Preferably, a first edge plate is provided at the upper end of the outer tube, and a first convex plate is fixedly connected to the outside of the first edge plate;

[0012] The encapsulation cover includes a second edge plate and a second convex plate detachably mounted on the first edge plate and the first convex plate, and a sector cover is fixedly connected to the second edge plate. A middle jack for inserting the sampling tube is provided at the axis center of the sector cover.

[0013] Preferably, an external gear edge plate is provided on the outer tube wall at the upper end of the inner tube, and a plurality of evenly distributed inner convex blocks are provided on the inner tube wall at the upper end of the inner tube;

[0014] Saw teeth are provided at the lower end opening of the inner tube.

[0015] Preferably, fitting grooves for rotatably mounting the external gear edge plate and the driving gear are provided at the bottom surfaces of the second edge plate and the second convex plate;

[0016] A first driving motor for coaxially connecting with the driving gear is fixedly installed on the second convex plate.

[0017] Preferably, a mounting fitting groove for detachably mounting on the inner convex blocks is provided at the upper end of the middle shaft seat, and external convex blocks for rotatably mounting the crushing rod are provided around the middle shaft seat;

[0018] A second driving motor coaxially connected with the crushing rod is installed on the external convex block.

[0019] Preferably, the middle shaft seat has a triangular prism structure with inwardly concave sides on three sides, and a conical head is provided at the bottom end of the middle shaft seat;

[0020] Both the crushing rod and the sample inlet opening are provided on three sides of the middle shaft seat;

[0021] When the inner tube rotates, the sample inlet opening is located behind the crushing rod.

[0022] Preferably, a limiting unit is provided on the outer tube wall at the upper end of the sampling tube. The limiting unit includes a connecting block fixedly connected to the sampling tube, and a clamping groove is provided on the outside of the connecting block;

[0023] A plug rod is vertically inserted into the connecting block and within the clamping groove, and a reset support ring is fixedly installed on the plug rod within the clamping groove;

[0024] A spring for keeping the plug rod reset downward is sleeved on the plug rod. The spring is located within the clamping groove and above the reset support ring.

[0025] Preferably, a rotation groove is conductively provided at the upper end of the intermediate shaft seat and outside the insertion cavity, and clamping holes for clamping the insertion rod are provided at both ends of the rotation of the rotation groove;

[0026] The sampling cylinder is rotationally limited along the rotation groove through the limiting unit.

[0027] Preferably, a plurality of sampling openings are provided on the sampling cylinder;

[0028] The sampling cylinder rotates along the rotation groove to keep the sampling opening and the sample injection opening aligned and conductively connected or misaligned and closed.

[0029] Preferably, a fixed frame seat is installed on the outer cylinder wall at the upper end of the outer tube cylinder. The fixed frame seat includes a horizontal connecting frame fixedly connected to the outer tube cylinder, and sampling handles are fixedly installed at both ends of the horizontal connecting frame;

[0030] An inclined support frame is provided at the lower end of the horizontal connecting frame.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. For this coal pile sampling device, the inner cylinder rotatably arranged in the sleeve part cooperates with the crushing rod in the anti-blocking part to break up the caked coal material and avoid blockage during the sampling process, which is beneficial for deep sampling and inspection, and the sampling efficiency and quality are better;

[0033] 2. The rotationally installed sampling cylinder can adjust the sampling timing, facilitate sampling after reaching the appropriate depth, and the structure of the intermediate shaft seat facilitates rapid sampling during the rotation process, avoiding the problem that it is inconvenient to sample the shallow layer or caked coal material into the sampling port. Overall, the operation is simple and it is beneficial to ensure the single sampling volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0035] Figure 1 is one of the overall structure schematic diagrams of the present invention;

[0036] Figure 2 is the second overall structure schematic diagram of the present invention;

[0037] Figure 3 is the overall structure sectional decomposition diagram of the present invention;

[0038] Figure 4 is the overall installation schematic diagram of the sleeve part of the present invention;

[0039] Figure 5 is the sectional decomposition diagram of the sleeve part of the present invention;

[0040] Figure 6 Schematic diagram of the installation relationship of the casing part of the present invention;

[0041] Figure 7 Overall installation schematic diagram of the anti-blocking part of the present invention;

[0042] Figure 8 Schematic diagram of the cross-section of the intermediate shaft seat of the present invention;

[0043] Figure 9 Installation schematic diagram of the sampling cylinder and the limiting unit of the present invention;

[0044] Figure 10 Schematic diagram of the limiting unit of the present invention.

[0045] The meanings of the various labels in the figure are as follows:

[0046] 1. Casing part; 11. Outer tube; 111. First edge plate; 112. First convex plate; 12. Inner cylinder; 121. Outer gear edge plate; 122. Inner convex block; 123. Saw teeth; 13. Driving gear; 14. Encapsulation cover; 141. Second edge plate; 142. Sector cover; 143. Second convex plate; 1401. Intermediate jack;

[0047] 2. Anti-blocking part; 21. Intermediate shaft seat; 2101. Insertion cavity; 2102. Sampling opening; 2103. Installation groove; 2104. Rotation groove; 2105. Card hole; 211. Conical head; 212. Outer convex block; 22. Crushing rod; 221. Crushing drill bit; 23. Second driving motor; 24. Sampling cylinder; 241. Sampling opening; 25. Limiting unit; 251. Connecting block; 2511. Card slot; 252. Insertion rod; 253. Spring; 254. Reset retaining ring;

[0048] 3. First driving motor; 4. Fixed frame seat; 41. Horizontal connecting frame; 42. Diagonal support frame; 43. Sampling handle. Detailed implementation manners

[0049] The following will describe the technical solutions in the embodiments of the present invention clearly and completely in conjunction with 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. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0050] Please refer to Figures 1-10 , the present invention details the above technical solutions through the following embodiments:

[0051] The coal stockpile sampling device of this embodiment aims to collect the coal material inside the coal stockpile and conduct quality inspection after multi-point sampling. The specific structure of the sampling probe is as follows Figures 1-3 shown in the figure, which includes:

[0052] The sleeve part 1, as shown in Figures 4-6 the figure, includes an outer tube 11 with a sealing cover 14 installed at the top. An inner tube 12 is rotatably installed inside the outer tube 11. Specifically, the lower end of the outer tube 11 is open, and coal material is collected during the process of inserting into the coal stockpile. However, considering that there may be caked coal lumps in the coal stockpile and the insertion process is inconvenient, the inner tube 12 is rotatably installed. Through the sawteeth 123 provided at the lower end of the inner tube 12, the caked coal material can be broken during rotation, enabling the coal material to smoothly enter the inner tube 12.

[0053] To maintain the stable rotation ability of the inner tube 12, in this embodiment, a first edge plate 111 and a fixedly connected first convex plate 112 are provided at the upper end of the outer tube 11. A second edge plate 141 and a second convex plate 143 that can be detachably installed on the first edge plate 111 and the first convex plate 112 are provided on the sealing cover 14. An outer gear edge plate 121 with the positional relationship shown in Figure 6 the figure is provided on the outer wall of the upper end of the inner tube 12, and three equally spaced and evenly distributed inner convex blocks 122 are provided on the inner wall of the upper end of the inner tube 12.

[0054] In this embodiment, in order not to affect the rotation of the outer gear edge plate 121 and maintain the limit, an installation groove for rotatably installing the outer gear edge plate 121 and the driving gear 13 is provided at the bottom surface of the second edge plate 141 and the second convex plate 143. At the same time, a first driving motor 3 that is coaxially connected to the driving gear 13 and used to provide rotational driving force is installed on the second convex plate 143. That is, the first driving motor 3 drives the driving gear 13 to rotate, and the driving gear 13 drives the inner tube 12 to rotate through the meshing outer gear edge plate 121, obtaining the effect of the sawteeth 123 breaking the coal material in front, and enabling labor-saving insertion into the coal stockpile.

[0055] The anti-blocking part 2 includes an intermediate shaft seat 21 that can be detachably installed at the axis of the inner tube 12. An installation groove 2103 that can be detachably installed on the inner convex block 122 is provided at the upper end of the intermediate shaft seat 21, so that the intermediate shaft seat 21 will remain relatively stationary with the inner tube 12 and rotate synchronously with the inner tube 12. However, it should be noted that there may still be small caked pieces in the coal material inserted into the inner tube 12, and this part will still block the sampling port, that is, block the sample inlet opening 2102. Therefore, in this embodiment, a crushing rod 22 for crushing this part of the coal material to avoid blockage is rotatably installed around the intermediate shaft seat 21, and a crushing drill bit 221 is provided at the front end of the crushing rod 22.

[0056] It should be explained that the intermediate shaft seat 21 is in the shape of Figure 8The three sides shown are provided with inwardly recessed triangular prism structures, and a conical head 211 is provided at the bottom end of the middle shaft seat 21, which can make the coal material move toward the recessed side during the insertion process. Moreover, outwardly protruding blocks 212 for rotatably mounting the crushing rods 22 are provided at the three concave surfaces of the middle shaft seat 21, and a second driving motor 23 coaxially connected to the crushing rod 22 is mounted on the outwardly protruding block 212. At the same time, the sample inlet opening 2102 is provided at the three side surfaces of the middle shaft seat 21, and when the inner cylinder 12 rotates, the sample inlet opening 2102 is located behind the crushing rod 22, that is, the crushed coal material will be squeezed into the sample inlet opening 2102 during the rotation process, thus avoiding the problem of material blockage.

[0057] For the convenience of taking out the coal material, in this embodiment, as Figure 8 shown in the structure, an insertion cavity 2101 for inserting the sampling cylinder 24 is provided at the axis center of the middle shaft seat 21, and sample inlet openings 2102 communicated with the insertion cavity 2101 are provided around the middle shaft seat 21. Three sampling openings 241 are provided on the sampling cylinder 24. In this embodiment, the sampling cylinder 24 can rotate, and by rotating and adjusting, the sampling opening 241 and the sample inlet opening 2102 are aligned and communicated or misaligned and closed, thereby realizing effective sampling.

[0058] It should be noted that in this embodiment, as Figures 4-6 shown, a sector-shaped cover 142 is fixedly connected to the second edge plate 141. A middle insertion hole 1401 for inserting the sampling cylinder 24 is provided at the axis center of the sector-shaped cover 142. In this embodiment, a rubber cushion layer is provided on the inner wall of the middle insertion hole 1401, which can maintain the non-shaking of the sampling cylinder 24 by interference extrusion. At the same time, the sector-shaped cover 142 leaves an open part, and this part is for the convenience of the inserted sampling cylinder 24 to rotate; in order to accurately adjust the alignment and communication or misalignment and closing between the sampling opening 241 and the sample inlet opening 2102, in this embodiment, as Figure 8 shown, a rotating groove 2104 is communicated and provided at the upper end of the middle shaft seat 21 and outside the insertion cavity 2101. Card holes 2105 for clamping the insertion rod 252 are provided at both ends of the rotation of the rotating groove 2104. The sampling cylinder 24 is limited to rotate along the rotating groove 2104 through the limiting unit 25.

[0059] Specifically, as Figure 9 and Figure 10 shown in the structure, the limiting unit 2 includes a connecting block 251 fixedly connected to the outer cylindrical wall at the upper end of the sampling cylinder 24. A vertically arranged card slot 2511 as Figure 10 shown is provided outside the connecting block 251. An insertion rod 252 is vertically inserted into the connecting block 251 and within the card slot 2511. A reset support ring 254 is fixedly mounted on the insertion rod 252. Through a spring 253 sleeved on the insertion rod 252, an outward expansion force is provided, so that the reset support ring 254 drives the insertion rod 252 to press downward, that is, it can be clamped into the card hole 2105 during the rotation along the rotating groove 2104. During the adjustment process, only the insertion rod 252 needs to be pulled upward, and the adjustment is simple.

[0060] In this embodiment, a horizontal connecting frame 41 is installed on the outer wall of the upper end of the outer tube 11. Sampling handles 43 are fixedly installed at both ends of the horizontal connecting frame 41. An inclined support frame 42 welded to the outer tube 1 is provided at the lower end of the horizontal connecting frame 41, that is, a holding site for pressing down for sampling is provided.

[0061] The working principle of the coal stockpile sampling device in this embodiment is as follows: Insert the sampling probe into the coal stockpile. The inner tube 12 drives the anti-blocking part 2 to rotate. The crushing drill bit 221 cooperates with the saw teeth 123 to break the agglomerated coal material, so that the coal material inside the inner tube 12 is broken. At the same time, during the rotation process, the sampling opening 241 is adjusted to be aligned and communicated with the sample inlet opening 2102 to complete sampling. After sampling is completed, it is reset and closed. Take out the device and draw out the sampling cylinder 24 to pour out the coal material. Then test this part of the coal material to detect the coal quality, take samples at multiple points, and conduct an overall evaluation.

[0062] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture. If this specific posture changes, then the directional indications will also change accordingly.

[0063] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A coal stockpile sampling device, characterized in that: include: The sleeve part (1) comprises an outer tube (11) with a packaging cover (14) installed at the top end, and an inner tube (12) is rotatably installed inside the outer tube (11); The anti-blocking part (2) comprises an intermediate shaft seat (21) detachably mounted at the axis center of the inner cylinder (12), a crushing rod (22) for crushing coal material blocking the front side being rotatably mounted around the intermediate shaft seat (21), an insertion cavity (2101) is provided at the axis center of the intermediate shaft seat (21), and a sampling opening (2102) communicating with the insertion cavity (2101) is provided around the intermediate shaft seat (21); A sampling cylinder (24) for sampling and collecting coal is inserted into the insertion cavity (2101).

2. The coal pile sampling device according to claim 1, characterized in that: A first edge plate (111) is provided at the upper end of the outer tube (11), and a first convex plate (112) is fixedly connected to the outer side of the first edge plate (111); The packaging cover (14) comprises a second edge plate (141) and a second convex plate (143) which are detachably mounted on the first edge plate (111) and the first convex plate (112), and a fan-shaped cover (142) is fixedly connected to the second edge plate (141), and a middle plug hole (1401) for inserting the sampling tube (24) is provided at the axis center of the fan-shaped cover (142).

3. The coal pile sampling device according to claim 2, characterized in that: An outer gear edge plate (121) is provided at the outer cylinder wall at the upper end of the inner cylinder (12), and a plurality of evenly distributed inner protrusions (122) are provided at the inner cylinder wall at the upper end of the inner cylinder (12); The lower end of the inner tube (12) is provided with saw teeth (123).

4. The coal pile sampling device according to claim 3, characterized in that: The bottom surfaces of the second edge plate (141) and the second convex plate (143) are provided with mounting grooves for rotatably mounting the external gear edge plate (121) and the driving gear (13); A first driving motor (3) for being coaxially connected to the driving gear (13) is fixedly mounted on the second convex plate (143).

5. The coal pile sampling device according to claim 3, characterized in that: The upper end of the intermediate shaft seat (21) is provided with a mounting groove (2103) for detachably mounting on the inner convex block (122), and the periphery of the intermediate shaft seat (21) is provided with outer convex blocks (212) for rotatably mounting the crushing rod (22); A second drive motor (23) coaxially connected to the breaking rod (22) is mounted on the outer protrusion (212).

6. The coal pile sampling device according to claim 5, characterized in that: The intermediate shaft seat (21) is in the form of a triangular column structure with three sides being concave inwards, and a conical head (211) is provided at the bottom end of the intermediate shaft seat (21); The crushing rod (22) and the sample inlet opening (2102) are both arranged on three side surfaces of the intermediate shaft seat (21); When the inner cylinder (12) rotates, the sample inlet opening (2102) is located at the rear side of the crushing rod (22).

7. The coal pile sampling device according to claim 6, characterized in that: A limiting unit (25) is provided on the outer wall of the upper end of the sampling cylinder (24), and the limiting unit (25) comprises a connecting block (251) fixedly connected to the sampling cylinder (24), and a clamping groove (2511) is provided on the outer side of the connecting block (251); An insertion rod (252) is vertically inserted on the connection block (251) and located in the clamping groove (2511), and a reset support ring (254) is fixedly installed on the insertion rod (252) and located in the clamping groove (2511); The insertion rod (252) is sleeved with a spring (253) for keeping the insertion rod (252) resetting downwards; the spring (253) is located in the clamping groove (2511) and above the resetting support ring (254).

8. The coal pile sampling device according to claim 7, characterized in that: A rotation groove (2104) is provided at the upper end of the intermediate shaft seat (21) and located outside the insertion cavity (2101), and holes (2105) for clamping the insertion rod (252) are provided at both rotation ends of the rotation groove (2104); The sampling cylinder (24) is rotated in a limited manner along the rotation groove (2104) by the limiting unit (25).

9. The coal pile sampling device according to claim 8, characterized in that: The sampling cylinder (24) is provided with a plurality of sampling openings (241); The sampling cylinder (24) rotates along the rotating groove (2104) to keep the sampling opening (241) and the injection opening (2102) aligned and connected or staggered and closed.

10. The coal stockpile sampling device according to claim 1, characterized in that: A fixing frame (4) is installed at the outer wall of the upper end of the outer tube (11), and the fixing frame (4) comprises a horizontal connecting frame (41) fixedly connected to the outer tube (11), and sampling handles (43) are fixedly installed at both ends of the horizontal connecting frame (41); An oblique support frame (42) is provided at the lower end of the horizontal connecting frame (41).

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