Roller type cooling system for fertilizer particles

Abstract

The invention provides a fertilizer particle drum-type cooling system which comprises a rotating drum extending transversely and rotating around the axis and a driving motor driving the rotating drum to rotate, a feeding hopper is further arranged outside one end of the rotating drum, the feeding hopper is fixedly connected with an inner conveying pipe, and the inner conveying pipe fixedly extends into the rotating drum. A plurality of first discharging holes are further formed in the other end wall of the rotating roller; the inner conveying pipe is further fixedly sleeved with an outer conveying pipe, one end of the outer conveying pipe is rotationally matched with the rotating roller, the other end of the outer conveying pipe is connected with an air inlet pipe, the air inlet pipe is connected with an air feeder, the inner conveying pipe is communicated with the outer conveying pipe, the outer conveying pipe is further communicated with the rotating roller, and the upper end of the feeding hopper further extends out of the outer conveying pipe. The problem that fertilizer particles are likely to be extruded and broken in the cooling process in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of fertilizer granule production equipment, and in particular to a fertilizer granule drum type cooling system. Background Art

[0002] During the production process of organic fertilizer, granulation is required to ultimately form fertilizer granules. After granulation, the granules are dried and then typically cooled. In the prior art, air cooling is generally used to accelerate cooling. For example, patent publication number CN221939603U discloses a fertilizer granule cooling and conveying device, which includes a conveying mechanism, at least one air cooler, at least one turning mechanism, and a driving mechanism. The conveying mechanism is used to convey fertilizer granules; each of the air coolers is disposed above the conveying mechanism along the conveying direction of the conveying mechanism to blow air toward the conveying mechanism; each of the turning mechanisms corresponds to each of the air coolers, and the turning mechanism is rotatably disposed between the conveying mechanism and the air cooler to turn the fertilizer granules; and the driving mechanism is connected to each of the turning mechanisms to drive each of the turning mechanisms to rotate. The turning mechanism can turn the fertilizer granules, thereby achieving a better cooling effect. However, during actual operation, the turning plate rotates when the turning mechanism is in operation, which may squeeze the fertilizer particles between the turning plate and the conveyor belt, causing the fertilizer particles to break. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention provides a fertilizer granule drum cooling system, which solves the problem in the prior art that fertilizer granules may be squeezed and broken during the cooling process.

[0004] According to an embodiment of the present invention, a fertilizer particle drum cooling system includes a rotating drum that extends laterally and rotates around an axis, and a driving motor that drives the rotating drum to rotate. A feed hopper is also provided outside one end of the rotating drum, the feed hopper is fixedly connected to an inner conveying pipe, and the inner conveying pipe is fixedly extended into the rotating drum, and a plurality of first discharge holes are also provided on the other end wall of the rotating drum; an outer conveying pipe is also fixedly sleeved outside the inner conveying pipe, and one end of the outer conveying pipe is rotatably matched with the rotating drum, and the other end is connected to an air inlet pipe, the air inlet pipe is connected to a blower, the inner conveying pipe and the outer conveying pipe are connected, and the outer conveying pipe is also connected to the rotating drum, and the upper end of the feed hopper also extends outside the outer conveying pipe.

[0005] In the above embodiment, the fertilizer particles are introduced into the rotating drum through the feed hopper and move from one end to the other end in the rotating drum. During the process, cold air is sent into the rotating drum by the blower, which has a cooling effect while the fertilizer particles move. During cooling, the fertilizer particles are in a continuous tumbling state, so the cooling effect is better and they will not be squeezed and broken, which solves the problem in the prior art that the fertilizer particles may be squeezed and broken during the cooling process.

[0006] Furthermore, the rotating drum is also provided with several second discharge holes with a larger aperture than the first discharge hole. The first discharge hole and the second discharge hole respectively form a first annular discharge belt and a second annular discharge belt on the rotating drum, and the second annular discharge belt is further away from the feed hopper.

[0007] Furthermore, the rotating drum is fixedly connected to a first outer shell and a second outer shell which surround the first annular discharge belt and the second annular discharge belt respectively. The bottoms of the first outer shell and the second outer shell are respectively provided with a first discharge pipe and a second discharge pipe.

[0008] Furthermore, an air duct is fixedly connected to the first outer shell.

[0009] Furthermore, one end of the rotating drum facing away from the feed hopper extends outside the second outer shell and a cover plate is detachably connected to the end surface.

[0010] Furthermore, a continuous spiral push plate extending from one end to the other end is fixedly connected to the inner wall of the rotating drum.

[0011] Furthermore, a fixed ring is fixedly connected to the outside of the inner conveying pipe, and the rotating drum is also fixedly connected to a first rotating ring rotatably mounted outside the fixed ring, wherein the fixed ring is also provided with several first ventilation holes connecting the rotating drum and the inner conveying pipe, and the outer conveying pipe is also fixedly connected to the fixed ring.

[0012] Furthermore, the inner conveying pipe and the outer conveying pipe are both arranged at an angle, and the higher end is arranged away from the rotating drum.

[0013] Furthermore, the higher end of the inner delivery pipe is fixedly connected to an open cover, which has an outward-expanding open structure and an outer edge fixedly connected to the inner wall of the outer delivery pipe. The open cover is also provided with a plurality of second ventilation holes connecting the spaces on both sides thereof.

[0014] Furthermore, a pair of mounting rings located on both sides of the feed hopper are fixedly connected to the inner conveying pipe through a plurality of connecting rods.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The cold air is sent in by the blower through the outer conveying pipe, and then enters the inner conveying pipe and enters the rotating drum together with the fertilizer particles. At the same time, the cold air in the outer conveying pipe also enters the rotating drum. The cold air and the fertilizer particles move together in the rotating drum. The contact efficiency is better during the process, so the fertilizer particles can be cooled more efficiently. At the same time, the fertilizer particles are not squeezed during the process, avoiding squeezing and crushing, and solving the problem that the fertilizer particles may be squeezed and crushed during the cooling process in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A magnified schematic diagram of the local structure at center A;

[0019] Figure 3 for Figure 1 A magnified schematic diagram of the local structure at point B in the middle;

[0020] In the above drawings:

[0021] Rotating drum 1, drive motor 2, feed hopper 3, inner conveying pipe 4, first discharge hole 5, outer conveying pipe 6, air inlet pipe 7, drive gear 8, driven gear ring 9, second discharge hole 10, first outer shell 11, second outer shell 12, first discharge pipe 13, second discharge pipe 14, air duct 15, cover plate 16, fixed ring 17, first rotating ring 18, first ventilation hole 19, support column 20, second rotating ring 21, third rotating ring 22, fourth rotating ring 23, open cover 24, second ventilation hole 25, connecting rod 26, mounting ring 27, spiral push plate 28. DETAILED DESCRIPTION

[0022] The technical solutions of the present invention are further described below with reference to the accompanying drawings and embodiments.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] In an exemplary embodiment, Figure 1As shown, this embodiment provides a fertilizer granule drum cooling system, which includes a rotating drum 1 extending laterally and rotating around an axis, and a driving motor 2 for driving the rotating drum 1 to rotate. A feed hopper 3 is further provided on the outside of one end of the rotating drum 1, and the feed hopper 3 is fixedly connected to an inner conveying pipe 4, and the inner conveying pipe 4 is fixedly extended into the rotating drum 1, and a plurality of first discharge holes 5 are further provided on the other end wall of the rotating drum 1; an outer conveying pipe 6 is further fixedly sleeved on the outside of the inner conveying pipe 4, and one end of the outer conveying pipe 6 is rotatably matched with the rotating drum 1, and the other end is connected to an air inlet pipe 7, and the air inlet pipe 7 is connected to a blower, and the inner conveying pipe 4 and the outer conveying pipe 6 is connected and the outer conveying pipe 6 is also connected to the rotating drum 1. The upper end of the feed hopper 3 is also extended to the outside of the outer conveying pipe 6 to ensure that the fertilizer particles enter the feed hopper 3 smoothly. In this solution, the driving motor 2 is connected to the driving gear 8. The rotating drum 1 is fixedly surrounded by a driven gear ring 9. The driving gear 8 and the driven gear ring 9 are engaged, so that the driving motor 2 can drive the rotating drum 1 to rotate. During operation, the fertilizer particles are first introduced into the inner conveying pipe 4 through the feed hopper 3. At the same time, the blower also introduces cold air into the outer conveying pipe 6. The cold air partially enters the inner conveying pipe 4 and moves into the rotating drum 1 together with the fertilizer particles. In this process, the fertilizer particles are The fertilizer particles are in contact with the cold air first, and can enter the rotating drum 1 more efficiently and be "pre-cooled" in advance. Some of the cold air surrounds the inner conveying pipe 4 in the outer conveying pipe 6 and then enters the rotating drum 1. In the process, the inner conveying pipe 4 is also cooled. The fertilizer particles are in a tumbling state while moving during the rotation and rolling. Therefore, the fertilizer particles are in contact with the cold air more efficiently, so the cooling effect is better, and they will not be squeezed and broken, which solves the problem that the fertilizer particles may be squeezed and broken during the cooling process in the prior art; in more detail, the fertilizer particles are discharged through the first discharge hole 5 set at the other end. In addition, a plurality of second discharge holes 10 with a larger aperture than the first discharge hole 5 are provided on the rotating drum 1. The first discharge hole 5 and the second discharge hole 10 respectively form a first annular discharge belt and a second annular discharge belt on the rotating drum 1. The second annular discharge belt is farther away from the feed hopper 3. Qualified fertilizer particles are discharged through the first annular discharge belt, and some larger particles or larger foreign objects will go to the second annular discharge belt and then be discharged. Furthermore, a continuous spiral push plate 28 extending from one end to the other end is fixedly connected to the inner wall of the rotating drum 1, so that the fertilizer particles are also pushed by the spiral to move more efficiently during the rotation process.

[0025] In a further solution, Figure 1 、 2As shown, the rotating drum 1 is further fixedly connected to a first outer shell 11 and a second outer shell 12 which surround the outside of the first annular discharge belt and the second annular discharge belt respectively. The bottoms of the first outer shell 11 and the second outer shell 12 are respectively provided with a first discharge pipe 13 and a second discharge pipe 14, that is, the materials of the first annular discharge belt and the second annular discharge belt first enter the corresponding first outer shell 11 and the second outer shell 12, and then are discharged through the first discharge pipe 13 and the second discharge pipe 14 at the bottom, so that the discharged materials are more convenient to collect; furthermore, an induced draft pipe 15 is also fixedly connected to the first outer shell 11, and the induced draft pipe 15 can be connected to an induced draft fan. The air flow in the rotating drum 1 is guided so that the incoming cold air moves toward the induced draft duct 15, passes through the first discharge hole 5 above the first annular discharge belt, and then leaves the rotating drum 1. This can improve the movement efficiency of the cold air and separate it from the fertilizer particles in time, further improving the cooling effect. In particular, the induced draft duct 15 is arranged on the top surface of the first outer shell 11, which can avoid accidental inhalation of fertilizer particles. In a further solution, the end of the rotating drum 1 facing away from the feed hopper 3 extends to the outside of the second outer shell 12 and a cover plate 16 is detachably connected to the end surface, so that the cover plate 16 can be opened to clean the inside of the rotating drum 1.

[0026] like Figure 1-3As shown, the inner conveying pipe 4 is fixedly connected to a fixing ring 17 on the outside, and the rotating drum 1 is also fixedly connected to a first rotating ring 18 rotatably sleeved on the outside of the fixing ring 17, wherein the fixing ring 17 is also provided with a plurality of first ventilation holes 19 communicating with the rotating drum 1 and the inner conveying pipe 4, and the outer conveying pipe 6 is also fixedly connected to the fixing ring 17, and the first rotating ring 18 and the fixing ring 17 are rotatably matched, so that the rotating drum 1 and the inner conveying pipe 4 and the outer conveying pipe 6 can be rotated together, and the outer conveying pipe 6 can be stabilized on the ground by the support column 20. Similarly, the first outer shell 11 and the second outer shell 12 can also be stabilized on the ground by the support column 20, and the first outer shell 11, the second outer shell 12 and the rotating drum 1 can be rotatably matched by similar second rotating rings 21, third rotating rings 22 and fourth rotating rings 23, while the rotating drum 1 can be rotatably supported; the first ventilation holes 19 provided on the fixing ring 17 allow the cold air in the outer conveying pipe 6 to pass through and enter the rotating drum 1; in more detail, the inner conveying pipe The delivery pipe 4 and the outer delivery pipe 6 are both inclined and the higher end is away from the rotating drum 1, so that the movement effect of the cold air and the fertilizer particles is better. Furthermore, the higher end of the inner delivery pipe 4 is also fixedly connected to an open cover 24, which has an outward-expanding open structure and the outer edge is fixedly connected to the inner wall of the outer delivery pipe 6. The open cover 24 is also provided with a plurality of second ventilation holes 25 communicating with the space on both sides thereof. The open cover 24 can make the cold air enter the inner delivery pipe 4 more concentratedly, and the second ventilation holes 25 provided at the same time also ensure Some of it enters the rotating drum 1 through the outer conveying pipe 6. Furthermore, the open cover 24 is also fixed to the outer conveying pipe 6, so that together with the fixing ring 17, the inner conveying pipe 4 and the outer conveying pipe 6 are fixed into an integral structure with better stability. In more detail, the inner conveying pipe 4 is also fixedly connected to a pair of mounting rings 27 located on both sides of the feed hopper 3 through a number of connecting rods 26, which further makes the fixation between the inner conveying pipe 4 and the outer conveying pipe 6 more stable, and at the same time does not affect the movement of cold air in the outer conveying pipe 6.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A fertilizer granule drum cooling system, characterized in that: It includes a rotating drum that extends laterally and rotates around an axis, and a driving motor that drives the rotating drum to rotate. A feed hopper is also provided on the outside of one end of the rotating drum. The feed hopper is fixedly connected to an inner conveying pipe and the inner conveying pipe is fixedly extended into the rotating drum. A plurality of first discharge holes are also provided on the other end wall of the rotating drum. An outer conveying pipe is also fixedly sleeved on the outside of the inner conveying pipe, and one end of the outer conveying pipe is rotatably matched with the rotating drum, and the other end is connected to an air inlet pipe, and the air inlet pipe is connected to a blower. The inner conveying pipe and the outer conveying pipe are connected and the outer conveying pipe is also connected to the rotating drum. The upper end of the feed hopper also extends to the outside of the outer conveying pipe.

2. The fertilizer granule drum cooling system according to claim 1, characterized in that: The rotating drum is also provided with a plurality of second discharge holes with a larger aperture than the first discharge hole. The first discharge hole and the second discharge hole respectively form a first annular discharge belt and a second annular discharge belt on the rotating drum, and the second annular discharge belt is further away from the feed hopper.

3. The fertilizer granule drum cooling system according to claim 2, characterized in that: The rotating drum is also fixedly connected to a first outer shell and a second outer shell which surround the first annular discharge belt and the second annular discharge belt respectively. The bottoms of the first outer shell and the second outer shell are respectively provided with a first discharge pipe and a second discharge pipe.

4. The fertilizer granule drum cooling system according to claim 3, characterized in that: The first outer shell is also fixedly connected to an air duct.

5. The fertilizer granule drum cooling system according to claim 3, characterized in that: One end of the rotating drum facing away from the feed hopper extends outside the second outer shell and a cover plate is detachably connected to the end surface of the rotating drum.

6. The fertilizer granule drum cooling system according to claim 1, characterized in that: A continuous spiral push plate extending from one end to the other end is also fixedly connected to the inner wall of the rotating drum.

7. The fertilizer granule drum cooling system according to any one of claims 1 to 6, characterized in that: A fixed ring is fixedly connected to the outside of the inner conveying pipe, and the rotating drum is also fixedly connected to a first rotating ring rotatably sleeved outside the fixed ring, wherein the fixed ring is also provided with a plurality of first ventilation holes connecting the rotating drum and the inner conveying pipe, and the outer conveying pipe is also fixedly connected to the fixed ring.

8. The fertilizer granule drum cooling system according to claim 7, characterized in that: The inner conveying pipe and the outer conveying pipe are both arranged obliquely, and the higher ends thereof are arranged away from the rotating drum.

9. The fertilizer granule drum cooling system according to claim 8, characterized in that: The higher end of the inner delivery pipe is also fixedly connected to an open cover, which has an outward-expanding open structure and an outer edge fixedly connected to the inner wall of the outer delivery pipe. The open cover is also provided with a plurality of second ventilation holes connecting the spaces on both sides thereof.

10. The fertilizer granule drum cooling system according to claim 7, wherein: The inner conveying pipe is also fixedly connected to a pair of mounting rings respectively located on both sides of the feed hopper through a plurality of connecting rods.

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