Spiral granulation cylinder for producing chemical fertilizer

Abstract

The utility model discloses a spiral granulation cylinder for producing chemical fertilizer, which comprises a cylinder body and two circles of riding wheel contact surfaces arranged on the outer side wall of the cylinder body, and a double-spiral channel extending from an inlet of the cylinder body to an outlet of the cylinder body is arranged on the inner wall of the cylinder body. The rotating direction of the double-helix channel is the same as that of the cylinder body; the double-spiral channel is composed of two hollow spiral channels with the same spiral direction, feeding ports of the hollow spiral channels are close to the outlet, and discharging ports of the hollow spiral channels are close to the inlet. Powder materials of the spiral granulation cylinder enter from the inlet, roll over and are stirred in the cylinder body, the powder materials are gathered into particles under the combined action of friction force, centrifugal force and gravity in the cylinder body, the particles meeting the size requirement flow out of the cylinder body from the particle outlet, and the too small particles and the powder materials enter the double-spiral channel from the outlet. And the double-helix channel re-transports over-small particles and powder materials to an inlet in the rotating process, and re-granulation is carried out.

Description

Technical Field

[0001] The utility model relates to the field of granulation equipment, in particular to a spiral granulation cylinder used for producing fertilizers. Background Art

[0002] The granulation drum achieves granulation through a series of process steps. The granulation drum fully mixes and contacts the materials to be granulated (such as powder or liquid materials) through its internal rotation or stirring mechanism. During this process, a binder or other additives may be added to promote the formation of particles. Next, as the granulation drum rotates or stirs, the materials are subjected to the combined effects of friction, centrifugal force and gravity in the drum. These forces cause the materials to tumble, collide and gradually form particles in the drum. When the particles reach the desired size and quality, they are discharged from the discharge port of the granulation drum.

[0003] It is difficult for the existing granulating cylinder to granulate all the powder materials. Some powder materials will be discharged from the discharge port along with the particles. The granular materials mixed with powder need to be screened to separate the powder from the particles. The staff will then send the powder materials back into the granulating cylinder for re-granulation.

[0004] In summary, the technical problem to be solved by the utility model is that the existing granulating cylinder cannot return the ungranulated powder material to the cylinder inlet for re-granulation. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a spiral granulating cylinder for producing fertilizers, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a spiral granulation cylinder used for producing fertilizers, including a cylinder, two circles of roller contact surfaces arranged on the outer wall of the cylinder, and a double helix channel extending from the entrance of the cylinder to the exit of the cylinder on the inner wall of the cylinder, and the rotation direction of the double helix channel is the same as the rotation direction of the cylinder; the double helix channel is composed of two hollow spiral channels with the same rotation direction, the feed port of the hollow spiral channel is close to the outlet, and the discharge port of the hollow spiral channel is close to the entrance.

[0007] Preferably, the feed port is funnel-shaped, and a grid plate is provided on the opening of the feed port.

[0008] Preferably, both side edges of the hollow spiral path are formed by splicing side panels with spiral curvature, and the upper side wall of the hollow spiral path includes: a first top panel fixed to the side panels, and a second top panel detachably filling the gap between the first top panels, and the first top panel and the second top panel have a spiral curvature.

[0009] Preferably, the lower edge of the side plate is welded to the inner wall of the cylinder, the adjacent side plates are fixed by welding, and the two side edges of the first top plate are welded to the upper edge of the side plate.

[0010] Preferably, the front and rear ends of the first top plate are both provided with protruding connecting plates, the connecting plates are provided with a first base block, the first base block is provided with a first through hole, the front and rear ends of the second top plate are both provided with grooves for accommodating the connecting plates, second base blocks are provided on both sides of the groove, the second base block is provided with a second through hole, and the hollow spiral path also includes a bolt rod that passes through the first through hole and the second through hole at the same time.

[0011] Preferably, a plurality of turning plates are provided on the inner wall of the cylinder.

[0012] Preferably, the inlet is provided with an annular baffle, and the outlet is provided with a conical particle outlet.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The powder material of the spiral granulating cylinder used for producing fertilizer enters from the inlet, tumbles and stirs in the cylinder, and the powder material is gathered into particles under the combined action of friction, centrifugal force and gravity in the cylinder. Particles of a certain size flow out of the cylinder from the particle outlet, and particles and powder materials that are too small enter the double spiral channel at the outlet. The double spiral channel transports the particles and powder materials that are too small to the inlet during rotation for re-granulation. As a result, the particle production rate is greatly increased and the labor intensity of the screening stage is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Isometric diagram of a spiral granulator used for fertilizer production;

[0016] Figure 2 A perspective structural diagram of a spiral granulating cylinder used for producing fertilizers;

[0017] Figure 3 It is a schematic diagram of the unfolded structure of the hollow spiral channel;

[0018] Figure 4 is a schematic diagram of the unfolded structure of the first top plate;

[0019] Figure 5 is a schematic diagram of the unfolded structure of the second top plate;

[0020] Figure 6 It is a structural schematic diagram of the turning plate.

[0021] In the figure: cylinder 1, supporting roller contact surface 2, double helix channel 3, feed port 4, inlet 5, outlet 6, grid plate 7, side plate 8, first top plate 9, second top plate 10, connecting plate 11, groove 12, first base block 13, second base block 14, annular baffle 15, particle outlet 16, bolt rod 17, and flipping plate 18. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figures 1 to 5 This embodiment provides a spiral granulation cylinder for producing fertilizers, comprising a cylinder 1, two roller contact surfaces 2 arranged on the outer wall of the cylinder 1, and a double helix channel 3 extending from the inlet 5 of the cylinder 1 to the outlet 6 of the cylinder 1 is arranged on the inner wall of the cylinder 1, and the rotation direction of the double helix channel 3 is the same as the rotation direction of the cylinder 1; the double helix channel 3 is composed of two hollow helical channels with the same rotation direction, and the feed port 4 of the hollow helical channel is close to the outlet 6, and the discharge port of the hollow helical channel is close to the inlet 5. The roller contact surface 2 contacts the roller and supports the mass of the cylinder 1. The powder material enters the cylinder 1 from the inlet 5. During the rotation of the cylinder 1, the powder material gradually flows toward the outlet 6. During this process, the powder material is aggregated into particles under the combined action of friction, centrifugal force and gravity in the cylinder. The particles and powder materials that are too small enter the double helix channel 3 through the feed port 4 at the outlet 6. During the rotation of the double helix channel 3, the particles and powder materials that are too small are transported back to the inlet 5 and enter the cylinder 1 from the discharge port for re-granulation.

[0024] The feed port 4 is funnel-shaped, and a grid plate 7 is provided on the opening of the feed port 4. The funnel-shaped feed port 4 facilitates the powder material to enter the hollow spiral channel, and the grid plate 7 plays a role in screening particles to prevent particles of the same size from entering the hollow spiral channel.

[0025] The two sides of the hollow spiral path are spliced ​​by side plates 8 with spiral curvature, and the upper side wall of the hollow spiral path includes: a first top plate 9 fixed on the side plates 8, and a second top plate 10 that is detachable and fills the gap between the first top plates 9, and the first top plate 9 and the second top plate 10 have spiral curvatures. The second top plate 10 is detachable to facilitate maintenance after the hollow spiral path is blocked.

[0026] The lower edge of the side plate 8 is welded to the inner wall of the cylinder 1 , the adjacent side plates 8 are fixed by welding, and the two side edges of the first top plate 9 are welded to the upper edge of the side plate 8 .

[0027] The front and rear ends of the first top plate 9 are both provided with protruding connecting plates 11, the connecting plates 11 are provided with a first base block 13, the first base block 13 is provided with a first through hole, the front and rear ends of the second top plate 10 are both provided with a groove 12 for accommodating the connecting plates 11, the groove 12 is provided with a second base block 14 on both sides, the second base block 14 is provided with a second through hole, and the hollow spiral track also includes a bolt rod 17 that passes through the first through hole and the second through hole at the same time. By removing the bolt rod 17, the second top plate 10 can be removed from the hollow spiral track.

[0028] The inner wall of the cylinder 1 is provided with a plurality of flipping plates 18. The flipping plates 18 point to the axis of the cylinder 1 and can cut off the longitudinal connection of the accumulation, reduce the accumulation amount of the material flow at the bottom, and reduce the probability of group rolling or sliding. This helps to distribute the material more evenly in the cylinder 1 and improve the granulation efficiency. The flipping plates 18 can throw the material during the rotation of the cylinder 1, so that it is impacted and hit in the air, thereby achieving the purpose of reducing the particle size. This impact and impact effect helps to refine the material particles and improve the product quality.

[0029] The inlet 5 is provided with an annular baffle 15 , and the outlet 6 is provided with a conical cone-shaped particle outlet 16 . The particle outlet 16 allows the material flow to have a certain sedimentation at the outlet 6 , making it convenient for small particles and powder to enter the feed inlet 4 .

[0030] The principle of the spiral granulating cylinder used in the production of fertilizers of the utility model is as follows:

[0031] The cylinder 1 has a certain slope when it is actually arranged. During the rotation of the cylinder 1, the material entering from the inlet 5 will gradually flow to the outlet 6. During this process, the material is gathered into particles under the combined action of the turning plate 18, friction, centrifugal force and gravity, and the particles enter the next production step from the particle outlet 16; the powder that has not been formed into particles and the particles that are too small enter the double helix channel 3 from the feed port 4 during the tumbling process. During the rotation, the hollow spiral channel transports the powder that has not been formed into particles and the particles that are too small to the inlet 5, and the granulation process is repeated.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A spiral granulating drum for producing fertilizers, comprising a drum body (1), two roller contact surfaces (2) arranged on the outer side wall of the drum body (1), characterized in that: A double helical channel (3) is provided on the inner wall of the cylinder (1) and extends from the inlet (5) of the cylinder (1) to the outlet (6) of the cylinder (1); the rotation direction of the double helical channel (3) is the same as the rotation direction of the cylinder (1); the double helical channel (3) is composed of two hollow helical channels with the same rotation direction, the feed port (4) of the hollow helical channel is close to the outlet (6), and the discharge port of the hollow helical channel is close to the inlet (5).

2. The spiral granulating drum for producing fertilizer according to claim 1, characterized in that: The feed inlet (4) is funnel-shaped, and a grid plate (7) is provided on the open opening of the feed inlet (4).

3. The spiral granulating drum for producing fertilizer according to claim 2, characterized in that: The two side edges of the hollow spiral path are formed by splicing side panels (8) with spiral curvatures, and the upper side wall of the hollow spiral path comprises: a first top panel (9) fixed on the side panels (8), and a second top panel (10) detachably filling a gap between the first top panels (9), and both the first top panel (9) and the second top panel (10) have spiral curvatures.

4. The spiral granulating drum for producing fertilizer according to claim 3, characterized in that: The lower edge of the side plate (8) is welded to the inner wall of the cylinder (1), the adjacent side plates (8) are fixed by welding, and the two side edges of the first top plate (9) are welded to the upper edge of the side plate (8).

5. The spiral granulating drum for producing fertilizer according to claim 3, characterized in that: The front and rear ends of the first top plate (9) are both provided with protruding connecting plates (11), the connecting plate (11) is provided with a first base block (13), the first base block (13) is provided with a first through hole, the front and rear ends of the second top plate (10) are both provided with a groove (12) for accommodating the connecting plate (11), second base blocks (14) are provided on both sides of the groove (12), the second base block (14) is provided with a second through hole, and the hollow spiral path also includes a bolt rod (17) that passes through the first through hole and the second through hole at the same time.

6. The spiral granulating drum for producing fertilizer according to claim 1, characterized in that: A plurality of turning plates (18) are provided on the inner wall of the cylinder (1).

7. The spiral granulating drum for producing fertilizer according to claim 1, characterized in that: The inlet (5) is provided with an annular baffle (15), and the outlet (6) is provided with a conical particle outlet (16).

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