Automatic pulverized coal sampling device

Abstract

The utility model relates to an automatic pulverized coal sampling device, which effectively solves the problem that the existing pulverized coal sampling operation is tedious, time-consuming and labor-consuming. Comprising an up-and-down axial air pipe, a supporting plate is arranged on the air pipe, an up-and-down axial fixing column is arranged at the upper end of the supporting plate, a rotatable rotating disc is coaxially arranged on the fixing column, a plurality of sample grooves evenly distributed in the circumferential direction of the rotating disc are formed in the rotating disc, and sample pipes with upward openings are placed in the sample grooves; a left-right axial storage pipe located above the rotating disc is arranged at the left end of the air pipe, a powder collecting hole located in the air pipe is formed in the upper side wall of the storage pipe, the lower end of the storage pipe communicates with a falling pipe capable of vertically corresponding to the sample pipe, and a powder pushing column capable of moving left and right is slidably connected into the storage pipe; the device is simple in structure, novel in conception, convenient to use and high in practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler power generation technical field, especially a pulverized coal automatic sampling device. BACKGROUND

[0002] Boilers generally adopt the pulverized coal suspension combustion mode, and the fineness of the pulverized coal is an important parameter for the combustion adjustment of the boiler, which directly affects the safety and economy of the operation of the boiler, the finer the pulverized coal, the higher the burnout degree, the smaller the mechanical and chemical incomplete combustion loss, and the lower the fly ash residual carbon content, which is helpful to reduce the slagging (commonly known as coking) of the boiler, therefore, during the operation of the boiler, the fineness of the pulverized coal needs to be measured and controlled accurately and timely according to the change of the coal quality for the combustion of the boiler, so as to maintain the fineness of the pulverized coal within a certain range, so that the boiler can be operated in the best state, and the cost of the pulverized coal can be controlled.

[0003] The fineness of the pulverized coal is generally measured by the power industry standard DL / T567.5-95 fuel test method for thermal power plants, that is, the determination of the fineness of the pulverized coal, that is, a certain amount of pulverized coal is taken and placed in a specified test sieve, after complete sieving, the fineness of the pulverized coal is calculated according to the mass of the residual pulverized coal on the test sieve, and the existing pulverized coal sampling device is usually collected by a rotating screw rod arranged in a discharging pipe, but such a collecting device has the following defects in actual use: since sampling needs to be performed every certain period of time, an operator needs to manually take down a sample box containing the taken pulverized coal from the equipment, and then replace a new sampling box, and the operation needs to be repeated every time the sampling is performed, so the operation is complicated, time-consuming and labor-consuming. SUMMARY

[0004] In view of the above problems, in order to make up for the deficiencies of the prior art, the utility model aims at providing a pulverized coal automatic sampling device, which effectively solves the problems of complicated and time-consuming and labor-consuming sampling operation of the existing pulverized coal.

[0005] The technical solution is that the utility model discloses a wind pipe in the axial direction, a support plate is arranged on the wind pipe, a fixed column in the axial direction is arranged on the upper end of the support plate, a rotatable rotating disc is coaxially arranged on the fixed column, a plurality of sample grooves are arranged on the rotating disc and are uniformly distributed in the circumferential direction, a sample tube with an opening facing upward is arranged in the sample groove, a storage pipe in the axial direction is arranged on the left end of the wind pipe and is located above the rotating disc, a powder collecting hole is arranged on the upper side wall of the storage pipe and is located in the wind pipe, a falling pipe is connected to the lower end of the storage pipe and corresponds to the sample tube, and a powder pushing column is slidably connected to the storage pipe and can move left and right.

[0006] Compared with the prior art, the utility model has the beneficial effects that the pulverized coal in the wind pipe can be automatically collected and stored, and the operation is simple, time-saving and labor-saving compared with the traditional manual sampling. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 This is the main view axonometric drawing of this utility model.

[0008] Figure 2 This is a full-section main view axonometric drawing of this utility model.

[0009] Figure 3 This is a cross-sectional left-side axonometric view of this utility model.

[0010] Figure 4 This is a full-section top-view axonometric drawing of this utility model.

[0011] Figure 5 This is a full-section top-view axonometric drawing of this utility model.

[0012] Figure 6 This is a utility model Figure 2 A magnified view of A in the middle.

[0013] Figure label:

[0014] 1. Air duct; 2. Support plate; 3. Fixed column; 4. Rotating disk; 5. Sample tube; 6. Storage tube; 7. Powder collection hole; 8. Drop tube; 9. Powder pushing column; 10. Drive gear; 11. First incomplete gear; 12. Relief groove; 13. Rack; 14. Second incomplete gear; 15. Motor; 16. Limiting ring; 17. Reset plate; 18. Spring; 19. Slot; 20. Locking column. Detailed Implementation

[0015] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the implementations of the base model disclosed below.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0018] Depend on Figures 1 to 6The device includes an air duct 1 with an upper and lower axial direction, a support plate 2 on the air duct 1, a fixed column 3 with an upper and lower axial direction on the upper end of the support plate 2, a rotatable rotating disk 4 coaxially on the fixed column 3, a plurality of sample slots evenly distributed along its circumference on the rotating disk 4, sample tubes 5 with their openings facing upwards placed in the sample slots, a storage tube 6 located above the rotating disk 4 and with a left and right axial direction on the left end of the air duct 1, a powder collection hole 7 located inside the air duct 1 on the upper side wall of the storage tube 6, a drop tube 8 connected to the lower end of the storage tube 6 that corresponds to the sample tubes 5 vertically, and a powder pushing column 9 that can move left and right slidably connected inside the storage tube 6.

[0019] In order to make the rotating disk 4 rotate, the rotating disk 4 is rotatably connected to the fixed column 3. The fixed column 3 is coaxially provided with a driving gear 10 located above the rotating disk 4. The sample tube 5 is provided with a first incomplete gear 11 that meshes with the driving gear 10 and can rotate.

[0020] In order to move the powder pushing column 9 left and right, the front end of the storage tube 6 is provided with a left and right relief groove 12, the left end of the powder pushing column 9 is provided with a rack 13 located in the relief groove 12, and the front of the storage tube 6 is provided with a second incomplete gear 14 that can mesh with the rack 13 and can rotate.

[0021] In order to make the first incomplete gear 11 and the second incomplete gear 14 rotate, the left end of the air duct 1 is provided with a motor 15, and the output shaft of the motor 15 is coaxially and fixedly connected to the first incomplete gear 11 and the second incomplete gear 14.

[0022] To facilitate the positioning of the sample tube 5, a limiting ring 16 is provided at the upper end of the sample tube 5.

[0023] To facilitate the resetting of the powder pushing column 9, a reset plate 17 is provided inside the sample tube 5, located to the left of the drop tube 8. The left end of the powder pushing column 9 is connected to the reset plate 17 via a spring 18.

[0024] To facilitate the fixing and limiting of the rotating disk 4, the support plate 2 has a plurality of hemispherical slots 19 that correspond one-to-one with the sample slots. The fixing column 3 has a placement hole, and the bottom surface of the placement hole is connected by a compression spring to a locking post 20 that can be inserted into the slot 19.

[0025] In use, this invention first places multiple sample tubes 5 into the sample slot in sequence. Due to the limiting ring 16, the sample tubes 5 are fixed in the sample slot to prevent them from falling. Meanwhile, coal dust flows through the air duct 1 and then falls into the storage tube 6 through the dust collection hole 7, accumulating within the storage tube 6. When the first sample collection is required, the motor 15 is turned on. The output shaft of the motor 15 drives the first incomplete gear 11 and the second incomplete gear 14 to rotate. The second incomplete gear 14 and the rack 1... 3 meshes and drives rack 13 to move to the left. Rack 13 drives the pusher column 9 to move to the left, pushing the coal powder sample accumulated in storage tube 6 to the left. After pushing to the left a certain distance, the accumulated coal powder sample is pushed into drop tube 8 and falls down into one of the sample tubes 5 for collection. At this time, the second incomplete gear 14 disengages from rack 13. Due to the loss of power and the restoring force of spring 18, the pusher column 9 moves to the right. After moving to the right a certain distance, it returns to the initial position.

[0026] As the second incomplete gear 14 disengages from the rack 13, the first incomplete gear 11 engages with the driving gear 10, causing the driving gear 10 to rotate. The driving gear 10 then rotates the fixed column 3 by 60 degrees, rotating the empty sample tube 5 directly below the drop tube 8. At this point, the first incomplete gear 11 and the second incomplete gear 14 return to their initial positions. The motor 15 then shuts off. Simultaneously, as the fixed column 3 rotates the rotating disk 4, it also rotates the locking pin 20 on it. The locking pin 20 rotates from one slot 19 to the other, thus fixing and limiting the fixed column 3 to prevent it from being used without sampling. During operation, the rotating disk 4 rotates. When it is necessary to perform air powder sampling again after a period of time, the motor 15 is turned on again. The motor 15 drives the first incomplete gear 11 and the second incomplete gear 14 to rotate again, pushing the air powder accumulated in the storage tube 6 to the left into the drop tube 8 and falling into the empty sample tube 5 for collection. Then, the second incomplete gear 14 disengages from the rack 13 again. At this time, the powder pushing column 9 moves to the right to its initial position. Then, the first incomplete gear 11 drives the gear 10 to rotate, which in turn rotates the empty sample tube 5 to below the drop tube 8. This process is repeated to achieve automatic sampling and collection.

[0027] Compared with the prior art, the beneficial effects of this utility model are: the rotating disk, sample tube, and powder pushing column provided can realize the automatic collection and storage of coal powder in the air duct. Compared with the traditional manual sampling, the operation is simple and saves time and effort. This structure is simple, novel in concept, convenient to use, and highly practical.

[0028] It should be noted that, depending on the implementation needs, the various components described in the embodiments of this utility model can be split into more components, or two or more components or parts of components can be combined into new components to achieve the purpose of the embodiments of this utility model.

[0029] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An automatic coal powder sampling device, comprising an axially extending air duct (1), characterized in that, A support plate (2) is provided on the air duct (1). A fixed column (3) with vertical axis is provided on the upper end of the support plate (2). A rotating disk (4) with a rotatable axis is provided on the fixed column (3). Multiple sample slots are evenly distributed along its circumference on the rotating disk (4). Sample tubes (5) with their openings facing upwards are placed in the sample slots. A storage tube (6) with its left end is provided above the rotating disk (4) and with its left and right axis is provided. A powder collection hole (7) located inside the air duct (1) is provided on the upper side wall of the storage tube (6). A drop tube (8) that corresponds to the sample tube (5) is connected to the lower end of the storage tube (6). A powder pushing column (9) that can move left and right is slidably connected inside the storage tube (6).

2. The automatic coal powder sampling device according to claim 1, characterized in that, The rotating disk (4) is rotatably connected to the fixed column (3). The fixed column (3) is coaxially provided with a driving gear (10) located above the rotating disk (4). The sample tube (5) is provided with a first incomplete gear (11) that meshes with the driving gear (10) and can rotate.

3. The automatic coal powder sampling device according to claim 1, characterized in that, The storage tube (6) has a left-right lateral groove (12) at the front end, and the powder pushing column (9) has a rack (13) located in the lateral groove (12) at the left end. The storage tube (6) has a second incomplete gear (14) that can mesh with the rack (13) and can rotate.

4. The automatic coal powder sampling device according to claim 1, characterized in that, The left end of the air duct (1) is provided with a motor (15), and the output shaft of the motor (15) is coaxially and fixedly connected to the first incomplete gear (11) and the second incomplete gear (14).

5. The automatic coal powder sampling device according to claim 1, characterized in that, The sample tube (5) is provided with a limiting ring (16) at the upper end.

6. The automatic coal powder sampling device according to claim 1, characterized in that, The sample tube (5) is provided with a reset plate (17) located to the left of the drop tube (8), and the left end of the powder pusher (9) is connected to the reset plate (17) via a spring (18).

7. The automatic coal powder sampling device according to claim 1, characterized in that, The support plate (2) has multiple hemispherical slots (19) that correspond one-to-one with the sample slots. The fixing column (3) has a placement hole. The bottom surface of the placement hole is connected by a spring (18) to a card post (20) that can be inserted into the slot (19).

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