CN214765268U - Fertilizer centrifugal granulation device and granulation equipment thereof - Google Patents

Abstract

The utility model discloses a fertilizer centrifugation prilling granulator and granulation equipment thereof belongs to fertilizer production facility field, including the upper cover plate and the lower apron of the input port that is equipped with the meltwater, be connected with the output shaft drive that rotates the motor in the middle of the lower apron, the middle part between upper cover plate and the lower apron is equipped with a plurality of water conservancy diversion pieces that are radial distribution around the center pin, outward flange department between upper cover plate and the lower apron is equipped with the graduation round pin of a plurality of even interval distributions, and the clearance between two liang of graduation round pins communicates inside and outside the interval space, the clearance forms to the centrifugation granulation hole. The utility model adopts the centrifugal granulation process to produce the small granular fertilizer with the grain size of 0.5-2.5mm, thereby meeting the requirements of production and irrigation facilities, optimizing the design of granulation holes and avoiding material blockage; different types of guide vanes and index pins are formulated, and matching is carried out according to the characteristics of different types of fertilizer slurry, so that the optimal granulation effect of various fertilizer slurries can be achieved.

Description

Fertilizer centrifugal granulation device and granulation equipment thereof

Technical Field

The utility model relates to a fertilizer production facility field, concretely relates to fertilizer centrifugation prilling granulator and granulation equipment thereof.

Background

The fertilizer provides essential nutrient elements for the crop cultivation nowadays, can be used for improving the soil property and improving the soil fertility degree, and is one of the material bases of modern agricultural production. Most of fertilizer particles in the market at present are 1.00mm-4.75mm or 3.35mm-5.60mm in particle size, and with the development of various fertilization technologies, formula processes and fertilization facilities, in practical application, small granular fertilizers are quickly dissolved and can better meet the requirements of irrigation facilities, so that the market demand for 0.5-2.5mm small granular fertilizers is gradually increased.

In the prior art, if the production is carried out by adopting a method and a system for producing the compound fertilizer by adopting the [ CN ] high tower granulation and a compound fertilizer-CN 108707000A, a method for producing the urea-based compound fertilizer by adopting the [ CN ] high tower granulation-CN 102584395A, a method for producing the granular compound fertilizer by adopting the [ CN ] high tower granulation and equipment-CN 1213001C, small granular materials can be produced by reducing the aperture of a screen in a high tower granulator from 2-4mm to 1-2mm, but the following problems can be caused: after the aperture of the screen mesh is reduced, impurities such as infusible matters and the like exceeding the size of the screen mesh in the raw material can block the screen mesh or gather in the screen mesh to cause frequent cleaning, the infusible matters comprise hard particles in the raw material, rust impurities in equipment and infusible matters generated in the pulping process, and various infusible matters can not be completely removed in the production; (2) the height of the tower required for producing the fertilizer granules of 0.5-2.5mm is far lower than that of the tower required for producing the fertilizer granules of 1.00-4.75 mm or 3.35-5.60 mm, which is about 1/8-1/3, and the production of the product by using the original high tower system is extremely wasteful.

However, as the formulation of fertilizer products is becoming more and more diversified, the difference in viscosity, consistency, density and the like between slurries of different products is large, and a single granulating device cannot ensure that each product can achieve the best granulating effect during production, so different granulating devices need to be designed according to the characteristics of each product to match with the product. Meanwhile, the conventional centrifugal granulating device has the problems of large granulating radius, uneven product granularity and the like. Therefore, a new centrifugal granulating device for small-particle fertilizers needs to be developed to improve the level of the whole production process of the small-particle fertilizers.

In the prior art, chinese patent CN110449089A discloses an atomizing rotary spray disk for fertilizer production, the rotary spray disk of this scheme preliminarily provides an atomizing spray disk that can be used in the field of fertilizer granulation, but because of the primary generation product, its atomizing effect has more deficiencies, such as easy accumulation of material, poor atomizing uniformity in all directions, difficult control of atomizing throw path, etc.

SUMMERY OF THE UTILITY MODEL

To the problem among the correlation technique, the utility model provides a fertilizer centrifugation prilling granulator and granulation equipment thereof to overcome the above-mentioned technical problem that current correlation technique exists.

The technical scheme of the utility model is realized like this:

a centrifugal fertilizer granulating device comprises an upper cover plate and a lower cover plate which are arranged at intervals up and down, wherein an input port of fertilizer melt is arranged in the middle of the upper cover plate, and the input port is communicated with an interval space between the upper cover plate and the lower cover plate; the middle of the lower cover plate is in driving connection with an output shaft of a rotating motor and is used for controlling the granulation device to rotate around the central shaft;

a plurality of flow deflectors radially distributed around the central shaft are arranged in the middle between the upper cover plate and the lower cover plate, the inner end of each flow deflector, which is close to the middle, extends close to the central shaft, the outer end of each flow deflector extends in the direction far away from the central shaft, and a centrifugal channel from inside to outside is formed between every two adjacent flow deflectors;

a plurality of indexing pins which are uniformly distributed at intervals are arranged at the outer edge between the upper cover plate and the lower cover plate, gaps between every two indexing pins are communicated with the inside and the outside of the interval space, and the gaps form centrifugal granulation holes; the number of the index pins is more than that of the guide vanes, and any centrifugal channel is communicated with the gaps.

The centrifugal fertilizer granulating device adopts a centrifugal granulating process, when slurry enters the granulating device rotating at a high speed, the slurry gradually moves to the outer side of the granulating device part due to the action of centrifugal force, and when the slurry leaves the granulating part through the centrifugal granulating hole, the slurry is atomized into slurry particles, so that the risk of material blockage is reduced; meanwhile, different types of flow deflectors are designed according to the characteristics of different fertilizer products, and matching is performed according to the characteristics of different types of fertilizer slurry, so that the optimal granulation effect of various fertilizer slurries can be achieved.

Preferably, the flow deflectors linearly extend outwards along the radial direction, and a plurality of flow deflectors are radially distributed among each other; or, the flow deflectors extend outwards along an arc line in the same direction, the flow deflectors are distributed in a spiral radial shape among the flow deflectors, in the centrifugal granulating device rotating at a high speed, the flow deflectors provide an outward centrifugal force for liquid slurry, and the flow deflectors are arranged in such a way that the centrifugal force is in direct proportion to the distance from a stress point to the circle center under the condition of the same rotating speed, so that the optimal granulating effect is better formed.

Preferably, the guide vane has a rectangular or C-shaped cross section along the extending direction, so as to enhance the flow guiding effect.

Preferably, the side surface of the guide vane in front of the granulation device in the rotation direction is a plane, an arc surface or a circular ring surface, so as to enhance the guide effect.

Preferably, the cross section of the index pin perpendicular to the central axis is semicircular, and the arc side of the index pin faces the direction of the central axis; or the section of the index pin, which is vertical to the central shaft, is triangular, and one vertex angle of the index pin faces to the direction of the central shaft.

Preferably, the index pin is a cylindrical body or a conical body with a small upper part and a big lower part.

Preferably, the centrifugal granulation holes are enclosed by the indexing pins and the upper cover plate and the lower cover plate to form long-strip-shaped holes, rhombic holes, round holes, double-side arc-shaped cylindrical holes or single-side arc-shaped cylindrical holes.

Preferably, the slurry granulation equipment further comprises a surrounding wall which is circumferentially arranged along the outer edges of the upper cover plate, the lower cover plate and the indexing pin, a through hole is formed in the surrounding wall, the through hole is communicated with the gap of the indexing pin on the inner side and the outer surface of the indexing pin, the through hole is in the shape of a strip-shaped hole, a rhombic hole, a round hole, a screen hole, a bilateral arc-shaped cylindrical hole or a unilateral arc-shaped cylindrical hole, the liquid column type of the slurry thrown out of the centrifugal granulation device is different according to the difference of viscosity, consistency, density and the like of the slurry, and the optimal granulation effect can be realized for each slurry, so that the through hole type is matched with the through hole type.

Further preferably, the through hole penetrates through the inner surface and the outer surface of the surrounding wall along the vertical direction; or the through hole penetrates through the inner surface and the outer surface of the surrounding wall along the inclined direction; or the through hole penetrates through the inner surface and the outer surface of the surrounding wall along the curve direction; the through holes penetrate along the inclined direction or the curve direction, so that the slurry liquid drops can be collided and crushed better, and the granulation is more uniform.

A centrifugal fertilizer granulating device comprises the centrifugal fertilizer granulating device;

the number of the indexing pins is 12-72, and the number of the guide vanes is 2-6.

The utility model has the advantages that:

(1) the small granular fertilizer is fast dissolved, and by utilizing the centrifugal granulation technology, the slurry can be used for producing the small granular fertilizer with the particle size of 0.5-2.5mm in a granulation device rotating at a high speed due to the centrifugal force, so that the requirement of actual production and irrigation facilities can be met; (2) by adopting a centrifugal granulation process, slurry is stretched into a film on a rotating disc under the action of centrifugal force, gradually migrates to the outer side of a granulation part, is atomized into slurry particles, and the outlet of a granulation hole of a centrifugal granulation device is optimized, so that non-molten impurities are more easily thrown out, and material blockage is avoided; (3) different types of guide vanes and index pins are designed, and matching is carried out according to the characteristics of different types of fertilizer slurry, so that the optimal granulation effect of various fertilizer slurries can be achieved.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is an axial view of the index pin and the guide vane according to embodiment 1 of the present invention;

fig. 3 is a top view of the index pin and the guide vane according to embodiment 1 of the present invention;

fig. 4 is an axial view of the index pin and the guide vane according to embodiment 2 of the present invention;

fig. 5 is a top view of the index pin and the guide vane according to embodiment 2 of the present invention;

FIG. 6 is a schematic view of a strip-shaped hole with a narrow top and a wide bottom in a centrifugal granulation hole according to the present invention;

FIG. 7 is a schematic view of a long, narrow, and elongated hole with a wide top and a narrow bottom in a centrifugal granulation hole according to the present invention;

FIG. 8 is a schematic view of diamond-shaped holes in the centrifugal granulation holes of the present invention;

FIG. 9 is a schematic view of a circular hole in a centrifugal pelletizing hole of the present invention;

FIG. 10 is a schematic diagram of a screen-shaped hole in a centrifugal pelletizing hole of the present invention;

fig. 11 is a schematic view of a bilateral arc-shaped cylindrical hole in a centrifugal granulation hole of the present invention;

fig. 12 is a schematic view of a single-side circular arc-shaped cylindrical hole with a narrow top and a wide bottom in a centrifugal granulation hole according to the present invention;

fig. 13 is a schematic view of a single-sided circular arc-shaped cylindrical hole with a wide upper part and a narrow lower part in a centrifugal granulation hole.

Reference numerals:

1f, the upper cover plate of example 1;

101f, the inlet of example 1;

2f, the lower cover plate of example 1; 2g, lower deck of example 2;

3f, the index pin of embodiment 1; 3g, index pin of example 2;

4f, centrifuging and granulating holes; 401a, narrow upper part and wide lower part strip-shaped holes; 401b, a long and narrow hole with a wide upper part and a narrow lower part; 402. rhombic holes; 403. A circular hole; 404. screen mesh holes; 405. bilateral arc-shaped columnar holes; 406a, a single-side arc-shaped columnar hole with a narrow upper part and a wide lower part; 406b, a single-side arc-shaped cylindrical hole with a wide upper part and a narrow lower part.

5f, the guide vane of embodiment 1; 5g, guide vane of example 2.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

As shown in fig. 1-3 and fig. 6-13, the centrifugal fertilizer granulating apparatus provided by the present invention comprises an upper cover plate 1f and a lower cover plate 2f arranged at an upper and a lower interval, wherein an input port 101f for fertilizer melt is arranged in the middle of the upper cover plate, and the input port is communicated with the space between the upper cover plate and the lower cover plate; the middle of the lower cover plate is in driving connection with an output shaft of a rotating motor and is used for controlling the granulation device to rotate around the central shaft;

a plurality of flow deflectors 5f distributed radially around the central shaft are arranged in the middle between the upper cover plate and the lower cover plate, the inner end of each flow deflector close to the middle extends to be close to the central shaft, the outer end of each flow deflector extends towards the direction far away from the central shaft, and a centrifugal channel from inside to outside is formed between every two adjacent flow deflectors; in a preferred embodiment, the flow deflectors extend outwards along a radial straight line, and a plurality of flow deflectors are radially distributed among each other; in this embodiment, the water conservancy diversion piece outwards extends along the pitch arc of equidirectional, is the radial distribution of screw-tupe between a plurality of water conservancy diversion pieces, the water conservancy diversion piece is the rectangle along extending direction's normal direction cross-sectional shape, the water conservancy diversion piece is the arc surface along the side in prilling granulator direction of rotation the place ahead, and in the rotatory centrifugal prilling granulator of high speed, the water conservancy diversion piece gives an outside centrifugal force of liquid ground paste, because centrifugal force and stress point are directly proportional to the distance to the centre of a circle under the same circumstances of rotational speed, and the water conservancy diversion piece so sets up, more is favorable to forming best granulation effect.

The centrifugal fertilizer granulating device adopts a centrifugal granulating process, when slurry enters the granulating device rotating at a high speed, the slurry gradually moves to the outer side of the granulating device part due to the action of centrifugal force, and when the slurry leaves the granulating part through the centrifugal granulating hole, the slurry is atomized into slurry particles, so that the risk of material blockage is reduced; meanwhile, different types of flow deflectors are designed according to the characteristics of different fertilizer products, and matching is performed according to the characteristics of different types of fertilizer slurry, so that the optimal granulation effect of various fertilizer slurries can be achieved.

A plurality of indexing pins 3f which are uniformly distributed at intervals are arranged at the outer edge between the upper cover plate and the lower cover plate, in the preferred embodiment, the section of each indexing pin, which is vertical to the central shaft, is triangular, and one vertex angle of each indexing pin faces to the direction of the central shaft; in this embodiment, the indexing pin is a cylindrical body or a conical body with a small top and a large bottom, the number of the indexing pins is 24-48, the preferred value of the indexing pin is 36, the number of the guide vanes is 2-6, and the preferred value of the indexing pin is 4, and the indexing pins are uniformly distributed along the central circumference to enhance the flow guiding effect. The gap between every two index pins is communicated with the inside and the outside of the spacing space, and the gap is formed into a centrifugal granulation hole 4 f; the number of the index pins is more than that of the guide vanes, and any centrifugal channel is communicated with the gaps.

In a preferred embodiment, the centrifugal granulation holes are enclosed by the indexing pins and the upper cover plate and the lower cover plate to form long-strip-shaped holes, rhombic holes, round holes, double-side arc-shaped cylindrical holes or single-side arc-shaped cylindrical holes. In a preferred embodiment, the slurry granulation equipment further comprises a surrounding wall which is circumferentially arranged along the outer edges of the upper cover plate, the lower cover plate and the indexing pins, a through hole is formed in the surrounding wall, the through hole is communicated with the gap of the indexing pins on the inner side and the surface of the outer side, the through hole is in the shape of a strip-shaped hole, a rhombic hole, a round hole, a screen hole, a double-side arc-shaped cylindrical hole or a single-side arc-shaped cylindrical hole, the liquid column type thrown out of the slurry from the centrifugal granulation device is different according to different viscosities, consistencies, densities and the like of the slurry, and the through hole type is designed to be matched with the slurry so that the optimal granulation effect can be realized for each slurry. The through hole penetrates through the inner surface and the outer surface of the surrounding wall along the vertical direction; or the through hole penetrates through the inner surface and the outer surface of the surrounding wall along the inclined direction; or the through hole penetrates through the inner surface and the outer surface of the surrounding wall along the curve direction; the through holes penetrate along the inclined direction or the curve direction, so that the slurry liquid drops can be collided and crushed better, and the granulation is more uniform. In this embodiment, the centrifugal granulation orifice can be made in different types:

as shown in fig. 6, which is a schematic view of a long strip-shaped hole 401a with a narrow top and a wide bottom in a centrifugal granulation hole, the vertical side angle of the long strip-shaped hole is 0-15 degrees;

as shown in fig. 7, which is a schematic view of a long, wide-top and narrow-bottom elongated hole 401b in a centrifugal granulation hole, the vertical side angle of the elongated hole is 0-15 °;

as shown in FIG. 8, which is a schematic view of diamond 402 in centrifugal granulation holes, the angle of the optional diamond can be rotated arbitrarily;

FIG. 9 shows a schematic view of a circular hole 403 in a centrifugal pelletizing hole;

as shown in fig. 10, a schematic of the screen-shaped holes 404 in the centrifugal granulation holes;

as shown in fig. 11, it is a schematic view of a bilateral arc-shaped cylindrical hole 405 in a centrifugal granulation hole, with both sides at an angle of 0-15 °;

as shown in fig. 12, it is a schematic view of a single-sided arc-shaped cylindrical hole 406a with a narrow top and a wide bottom in a centrifugal granulation hole, wherein the two sides of the cylinder are at a narrow top and a wide bottom, and the angle of the two sides is 0-15 °;

fig. 13 is a schematic diagram of a single-sided circular arc-shaped cylindrical hole 406b with a wide top and a narrow bottom in a centrifugal granulation hole, wherein two sides of the cylindrical hole are wide top and narrow bottom, and the angle between the two sides is 0-15 °.

Through the above technical scheme of the utility model, in concrete application, the central authorities of upper cover plate are equipped with the melt inlet, and during the thick liquids melt was imported the centrifugal granulation device from the melt inlet, lower cover plate connected motor output shaft, rotation through motor control centrifugal granulation device. Centrifugal granulation device is a high-speed rotatory moving part, fertilizer ground paste gets into the inside back of centrifugal granulation device, when the ground paste is touch to high-speed rotatory water conservancy diversion piece, the water conservancy diversion piece gives the outside centrifugal force of liquid ground paste, because centrifugal force is directly proportional with the distance of stress point to the centre of a circle under the same circumstances of rotational speed, when centrifugal granulation device is inside promptly, the ground paste receives centrifugal force grow gradually, the ground paste extends into the film because centrifugal force grow gradually with the in-process that outwards migrates gradually at centrifugal force effect, the film is more and more thin along with centrifugal force's increase, finally break into individual liquid drop when centrifugal granulation device is outer, accomplish the granulation process.

Example 2

In one embodiment of the present invention, as shown in fig. 4, fig. 5, and fig. 6 to fig. 13, the main technical solution of this embodiment is substantially the same as that of embodiment 1, and the unexplained features in this embodiment are explained by using the explanations in embodiment 1, which are not repeated herein. This example differs from example 1 in that: the guide vanes 5g extend outwards along an arc line in the same direction, a plurality of guide vanes are distributed in a spiral radial shape, the number of the guide vanes is 2-6, the preferred value of the guide vanes is 3, and the guide vanes are uniformly distributed along the central circumference; the section of the indexing pin 3g perpendicular to the central shaft is semicircular, the arc side of the indexing pin faces the direction of the central shaft, the number of the indexing pins is 24-72, and the preferred value is 48; in the centrifugal granulating device rotating at high speed, the guide vanes and the index pins provide an outward centrifugal force for liquid slurry, and the centrifugal force is in direct proportion to the distance from a force point to the circle center under the condition of the same rotating speed, so that the optimal granulating effect is better formed.

Example 3

The embodiment provides a granulation equipment for fertilizer production, includes as above centrifugal granulation device, centrifugal granulation device lower cover plate passes through the output shaft coupling, is connected with the motor through the coupling, by motor control centrifugal granulation device's motion.

Specifically, the center of the lower cover plate of the centrifugal granulating device sequentially passes through an output shaft, a coupler is connected with a motor, the rotation of the motor is output to the output shaft through the coupler, the output shaft drives the centrifugal granulating device to rotate at a high speed, so that molten liquid is sprayed out under the action of centrifugal force, and the motor is fixed through a motor base.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. In addition, although specific terms are used in the specification, the terms are used for convenience of description and do not limit the utility model in any way.

Claims (10)

1. A centrifugal fertilizer granulating device comprises an upper cover plate and a lower cover plate which are arranged at intervals up and down, wherein an input port of fertilizer melt is arranged in the middle of the upper cover plate, and the input port is communicated with an interval space between the upper cover plate and the lower cover plate; the middle of the lower cover plate is in driving connection with an output shaft of a rotating motor and is used for controlling the granulation device to rotate around the central shaft; it is characterized in that the preparation method is characterized in that,

a plurality of flow deflectors radially distributed around the central shaft are arranged in the middle between the upper cover plate and the lower cover plate, the inner end of each flow deflector, which is close to the middle, extends close to the central shaft, the outer end of each flow deflector extends in the direction far away from the central shaft, and a centrifugal channel from inside to outside is formed between every two adjacent flow deflectors;

a plurality of indexing pins which are uniformly distributed at intervals are arranged at the outer edge between the upper cover plate and the lower cover plate, gaps between every two indexing pins are communicated with the inside and the outside of the interval space, and the gaps form centrifugal granulation holes; the number of the index pins is more than that of the guide vanes, and any centrifugal channel is communicated with the gaps.

2. The centrifugal fertilizer granulator of claim 1 wherein the baffles extend radially outwardly in a straight line, and the baffles are radially spaced from one another; or the guide vanes extend outwards along an arc line in the same direction, and the plurality of guide vanes are distributed in a spiral radial shape.

3. The centrifugal fertilizer granulator of claim 1 wherein the flow deflector has a rectangular or C-shaped cross-section normal to the direction of elongation.

4. A centrifugal granulator for fertilizer according to claim 1 wherein the front side of the deflector in the direction of rotation of the granulator is a flat surface, a circular arc surface or a torus.

5. A centrifugal fertilizer granulator according to claim 1 wherein the cross-section of the index pin perpendicular to the central axis is semicircular with the arc side thereof facing the central axis; or the like, or, alternatively,

the cross section of the index pin, which is vertical to the central shaft, is triangular, and one vertex angle of the index pin faces to the direction of the central shaft.

6. The centrifugal fertilizer granulator of claim 1 wherein the index pin is a cylindrical body or a conical body with a small top and a large bottom.

7. The centrifugal fertilizer granulator of claim 1 wherein the centrifugal granulation holes are elongated, diamond-shaped, circular, double circular arc cylindrical or single circular arc cylindrical holes enclosed between the indexing pins and between the upper and lower cover plates.

8. The centrifugal fertilizer granulator of claim 1 further comprising a peripheral wall circumferentially disposed along the outer edges of the upper and lower cover plates and the index pin, wherein the peripheral wall is provided with a through hole therethrough, the through hole communicates with the inner index pin gap and the outer surface, and the through hole is in the shape of a strip, diamond, circular, mesh, double circular arc, or single circular arc.

9. A centrifugal fertilizer granulator according to claim 8 wherein the through holes extend vertically through the inner and outer surfaces of the enclosure wall; or the through hole penetrates through the inner surface and the outer surface of the surrounding wall along the inclined direction; or the through hole penetrates through the inner surface and the outer surface of the surrounding wall along the curve direction.

10. A centrifugal fertilizer granulating apparatus, comprising a centrifugal fertilizer granulating device as claimed in any one of claims 1 to 9;

the number of the indexing pins is 12-72, and the number of the guide vanes is 2-6.

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