Automatic feeding mechanism

Abstract

The utility model discloses an automatic feeding mechanism which comprises a hopper, a stirring rod, a lifting rotating mechanism, a connecting thin neck and a plugging head, the hopper is provided with a blanking port, a driving end of the lifting rotating mechanism penetrates into the hopper and is connected to the stirring rod, the connecting thin neck penetrates into the blanking port, and the plugging head is connected to the stirring rod. The top of the connecting thin neck penetrates into the hopper and is connected to the stirring rod, and the bottom of the connecting thin neck penetrates out of the discharging opening and is connected to the plugging head. According to the feeding mechanism, the stirring rod is connected to the plugging head outside the hopper through the connecting thin neck, and due to the fact that the connecting thin neck penetrates through the whole discharging port in the structure, coal bridging is not prone to being formed, and blocking of the discharging port is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal quality analysis, in particular to an automatic feeding mechanism. Background Art

[0002] In the field of coal quality analysis, it is necessary to frequently test indexes such as calorific value, moisture, volatile matter, ash content, etc. of coal. The coal samples to be tested are mostly in powder form, and it is necessary to manually place an appropriate amount of coal sample in the crucible before testing. Since the amount of coal sample corresponding to each test index is different, when manually placing the coal sample into the crucible, not only the operation is cumbersome, but also the sample amount is likely to exceed the range.

[0003] Currently, there is already an automatic weighing and feeding mechanism in the industry, which can realize automatic feeding of coal sample amounts for different test indexes, greatly reducing the labor intensity and operation difficulty of experimental personnel. As Figure 1 shown, after the coal sample is added to the hopper 21 in the feeding part of the automatic weighing and feeding mechanism, the stirring rod 22 makes up-and-down and rotating movements under the action of the lifting and rotating mechanism 23, and the coal sample falls from the blanking port 24. This structure has the following problems:

[0004] 1) When the coal sample is sticky (similar to flour), it is easy for the coal sample to accumulate at the upper end of the blanking port 24 after the stirring rod 22 is lifted. When the stirring rod 22 moves downward, it is sometimes difficult to discharge the coal sample in time, resulting in a decrease in the blanking speed;

[0005] 2) This structure is currently only suitable for coal sample particles of 0.2 mm and below. The larger the particle size, the greater the risk of "bridging" of the coal sample at the upper end of the blanking port 24. Summary of the Invention

[0006] In view of the above problems, an automatic feeding mechanism is provided, aiming to avoid the problems existing in the use of the existing mechanism.

[0007] The specific technical solution is as follows:

[0008] An automatic feeding mechanism includes a hopper, a stirring rod and a lifting and rotating mechanism. A blanking port is provided on the hopper. The driving end of the lifting and rotating mechanism penetrates into the hopper and is connected to the stirring rod. It also includes a connecting neck and a plugging head. The connecting neck is disposed in the blanking port. The top of the connecting neck penetrates into the hopper and is connected to the stirring rod. The bottom of the connecting neck penetrates out of the blanking port and is connected to the plugging head.

[0009] Further, the sealing surface between the plugging head and the blanking port is an arc spherical surface or a conical surface.

[0010] Further, the plugging head is spherical.

[0011] Further, the stirring rod includes a guiding rod and fins mounted on the guiding rod. The upper and lower ends of the guiding rod are correspondingly mounted on the lifting and rotating mechanism and the connecting neck.

[0012] Further, the fins are welded to the guiding rod.

[0013] Further, the lifting and rotating mechanism is a lifting and rotating motor.

[0014] Further, the diameter of the connecting neck is smaller than the diameter of the blanking port.

[0015] Further, both ends of the connecting neck are detachably connected to the stirring rod and the plug head.

[0016] Further, both ends of the connecting neck are screwed to the stirring rod and the plug head.

[0017] The beneficial effects of the above solution are:

[0018] In the feeding mechanism provided by the present utility model, the stirring rod is connected to the plug head outside the hopper through the connecting neck. In the above structure, since the connecting neck penetrates the entire blanking port, it is not easy to form a "coal bridge", reducing the blockage of the blanking port. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic cross-sectional view of the feeding part in the existing automatic weighing and feeding mechanism in the background technology;

[0020] Figure 2 It is a schematic cross-sectional view of the feeding mechanism provided in the embodiment of the present utility model;

[0021] Figure 3 It is a schematic structural view of the stirring rod provided in the embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only part, rather than all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0024] Next, the present utility model will be further described in conjunction with specific embodiments, but it is not a limitation of the present utility model.

[0025] Such as Figure 2 、Figure 3 As shown in the figure, the automatic feeding mechanism provided in the embodiment of the present utility model includes a hopper 11, a stirring rod 12, a lifting and rotating mechanism 13, a connecting neck 15 and a plugging head 16. A material dropping port 14 is provided on the hopper 11. The driving end of the lifting and rotating mechanism 13 penetrates into the hopper 11 and is connected to the stirring rod 12. The connecting neck 15 is disposed through the material dropping port 14. The top of the connecting neck 15 penetrates into the hopper 11 and is connected to the stirring rod 12. The bottom of the connecting neck 15 passes out of the material dropping port 14 and is connected to the plugging head 16.

[0026] In the present utility model, the stirring rod 12 includes a guiding rod 121 and fins 122 welded to the guiding rod 121. The upper and lower ends of the guiding rod 121 are correspondingly installed on the lifting and rotating mechanism 13 and the connecting neck 15. The above-mentioned stirring rod 12 can move up and down and rotate synchronously under the drive of the lifting and rotating mechanism 13, such as a lifting and rotating motor, to discharge the coal sample in the hopper 11. In the above structure, since the connecting neck 15 penetrates the entire material dropping port 14, even sticky coal powder of 0.2 mm or less is not likely to form a "coal bridge", thereby reducing the blockage phenomenon of the material dropping port 14.

[0027] In the present utility model, the diameter of the connecting neck 15 is smaller than the diameter of the material dropping port 14, which makes there be a gap between the connecting neck 15 and the material dropping port 14. The above gap can be enlarged as needed. Specifically, the two ends of the connecting neck 15 can be detachably connected to the stirring rod 12 and the plugging head 16 to replace the connecting neck 15 with different thicknesses according to the passing needs of different coal sample particles.

[0028] In the present utility model, when the plugging head 16 moves upward, it plugs the material dropping port 14 from the outside. An arc spherical surface or a conical surface sealing surface is formed between the plugging head 16 and the material dropping port 14. During sealing, since the stirring rod 12 is located above the material dropping port 14, it can avoid squeezing the coal sample at the material dropping port 14, thereby ensuring the smooth flow of the coal flow and making the feeding speed faster.

[0029] The above is only a preferred embodiment of the present utility model, and it does not limit the implementation manner and protection scope of the present utility model. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the content of the specification of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An automatic feeding mechanism, comprising a hopper, a stirring rod and a lifting and rotating mechanism, wherein the hopper is provided with a feeding port, and the driving end of the lifting and rotating mechanism penetrates into the hopper and is connected to the stirring rod, characterized in that: It also includes a connecting neck and a plugging head, wherein the connecting neck is inserted into the material drop port, the top of the connecting neck is inserted into the hopper and connected to the stirring rod, and the bottom of the connecting neck is inserted from the material drop port and connected to the plugging head.

2. The automatic feeding mechanism according to claim 1, characterized in that: The sealing surface between the plugging head and the blanking port is an arc spherical surface or a conical surface.

3. The automatic feeding mechanism according to claim 2, characterized in that: The plugging head is in a spherical shape.

4. The automatic feeding mechanism according to claim 1, characterized in that: The stirring rod comprises a guide rod and a fin mounted on the guide rod. The upper and lower ends of the guide rod are correspondingly mounted on the lifting and rotating mechanism and the connecting neck.

5. The automatic feeding mechanism according to claim 4, characterized in that: The fins are welded to the guide rods.

6. The automatic feeding mechanism according to claim 1, characterized in that: The lifting and rotating mechanism is a lifting and rotating motor.

7. The automatic feeding mechanism according to claim 1, characterized in that: The diameter of the connecting neck is smaller than the diameter of the blanking opening.

8. The automatic feeding mechanism according to claim 1, characterized in that: The two ends of the connecting neck are detachably connected to the stirring rod and the plugging head.

9. The automatic feeding mechanism according to claim 8, characterized in that: The two ends of the narrow neck are spirally connected to the stirring rod and the plugging head.

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