CN221245039U

CN221245039U - Granulating device not easy to block

Info

Publication number: CN221245039U
Application number: CN202322427354.1U
Authority: CN
Inventors: 林伟喜; 罗冬贵; 王晓春
Original assignee: Radome Technology Group Co ltd
Current assignee: Radome Technology Group Co ltd
Filing date: 2023-09-06
Publication date: 2024-07-02
Anticipated expiration: 2033-09-06

Abstract

The utility model discloses a granulating device which is not easy to block; the device comprises an outer spray blue structure, an inner shaft driving device, an outer shaft driving device, an inner shaft, an outer spray blue support and a spiral knife; holes for spraying slurry are formed in the side face of the outer spray blue body; the outer shaft driving device, the outer shaft and the outer spray blue structure are sequentially connected in a transmission way; the bottom of the spiral knife is provided with a horizontal cutter; the inner shaft driving device, the inner shaft and the spiral knife are sequentially connected in a transmission way, and the rotary knife is arranged in the outer spray blue structure and is used for stirring, cutting and centrifuging slurry. According to the utility model, the horizontal cutters are arranged to effectively cut and grind the aggregates, so that the holes are prevented from being blocked.

Description

Granulating device not easy to block

Technical Field

The utility model relates to the field of high tower granulation in fertilizer production, in particular to a granulating device which is not easy to block.

Background

In the production process of compound fertilizer, the tower-type spray nozzle granulation technology is a common granulation technology at present, urea or ammonium nitrate phosphorus which can be melted at low temperature is utilized to carry out indirect heating melting, the urea or ammonium nitrate phosphorus is stirred and mixed with phosphorus-potassium fertilizer to prepare flowable slurry, the flowable slurry is naturally overflowed into a granulator, the raw materials are sprayed out through holes on the spray nozzle to form liquid drops under the rotation action of the spray nozzle, and the liquid drops meet upstream air in the descending process and are gradually cooled and crystallized into particles.

The differential granulating spray heads of the high-tower compound fertilizer in the prior art are small-hole granulating spray heads, the aperture of the small-hole granulating spray heads is 2-5mm, melt slurry is sprayed out of thousands of small holes of the spray heads, and as the melt slurry raw material inevitably contains solid insoluble matters, unpacked fibers and powder aggregates which are not fully mixed and are larger than the technological requirements, spray holes are easily blocked, if a certain spray hole is blocked, associated trickles and splash liquid drops are generated, defective products are caused, and the finished product qualification rate and granulating quality are seriously affected.

Disclosure of utility model

In order to overcome the defects in the prior art, the utility model aims to solve the problems that the slurry raw material contains materials which are more than the technological requirement in the granulating process of the compound fertilizer and further grind, so that the influence of agglomerates in the slurry on products is reduced; meanwhile, the aperture and the structure of the outer blue spraying hole are changed, so that the outer blue spraying hole is not blocked, the frequency of replacement and cleaning is reduced, the labor intensity is reduced, and the productivity is improved.

The utility model adopts the following technical scheme:

The granulating device not easy to block comprises an outer spray blue structure, an inner shaft driving device, an outer shaft driving device, an inner shaft, an outer spray blue support and a spiral cutter; holes for spraying slurry are formed in the side face of the outer spray blue body; the outer shaft driving device, the outer shaft and the outer spray blue structure are sequentially connected in a transmission way; the bottom of the spiral knife is provided with a horizontal cutter; the inner shaft driving device, the inner shaft and the spiral knife are sequentially connected in a transmission way, and the spiral knife is arranged in the outer spray blue structure and is used for stirring, cutting and centrifuging slurry.

Preferably, the rotation direction of the inner shaft and the outer shaft are opposite; the outer shaft and the inner shaft are concentrically arranged, and the outer shaft is sleeved outside the inner shaft; the inner shaft and the outer shaft are rotatably fixed on a rack of the granulating device; a spiral cutter seat pivoted with the frame of the granulating device is also arranged between the inner shaft and the spiral cutter; and an outer spray blue support pivoted with the frame of the granulating device is also arranged between the outer shaft and the outer spray blue structure.

Preferably, the spiral knife is in a conical structure with a big top and a small bottom; the clearance between the spiral knife and the inner wall of the outer spray blue body is 13-20mm.

Preferably, the spiral cutter comprises a rotating shaft and a spiral cutter spirally fixed on the rotating shaft; the bottom end of the rotating shaft is fixedly provided with the horizontal cutter.

Preferably, the outer spray blue structure comprises an outer spray blue body for containing slurry and an annular plate arranged around the outer spray blue body; and a cutting plate is arranged on the edge, far away from the outer spray blue body, of the annular plate.

Preferably, the cutting plate is provided with a notch; the notch is arranged towards the direction of the outward spraying blue body.

Preferably, the annular plate is spirally arranged; the holes are formed in the outer spray blue body between the adjacent spiral annular plates.

Preferably, the annular plate is arranged in a circular ring shape; the holes are formed in the outer spray blue body between the upper annular plate and the lower annular plate.

Preferably, the annular plate is arranged on the outer spray blue body in an upturned mode; the outer spray blue body is in a frustum shape with a large upper part and a small lower part; the cutting plate is provided with saw teeth; the opening of sawtooth spouts blue body orientation setting outwards.

Preferably, the diameter of the hole is 8-10mm; the center distance of the hole is 11-20mm; the distance between the adjacent annular plates is 15-30mm.

Compared with the prior art, the utility model has the beneficial effects that:

Firstly, the cutter is arranged, so that the material with larger particles can be further ground and cut, the particle size of the material is reduced, and the particles can pass through the holes on the outer spray blue body.

Secondly, the utility model provides a structure completely different from the traditional blue spraying granulation, the holes arranged in the traditional blue spraying granulation are smaller, the spraying speed of the slurry is controlled through the aperture of the holes, and the granulation and the control of the particle size in the granulation are realized; but is easy to block due to smaller pore diameter; according to the utility model, the annular plate and the cutting plate are arranged, and even the saw teeth are further arranged on the cutting plate, so that the size of the particle size is not controlled by the size of the aperture in the granulating process; but the particle size is granulated and controlled by rotary cutting of the ejected liquid; a new granulation apparatus and method is provided. Further, the pore diameter of the utility model can be set larger, and the pore diameter is less prone to blockage.

Drawings

FIG. 1 is a cross-sectional view of a granulating apparatus;

FIG. 2 is a schematic structural view of a helical blade;

FIG. 3 is a schematic diagram of an outer spray blue structure;

FIG. 4 is a schematic view of a saw blade;

In the figure: 1. an inner shaft driving device; 2. an outer shaft driving device; 3. a housing; 4. an inner shaft; 5. an outer shaft; 6. a spiral tool apron; 7. a feed box; 8. an outer spray blue support; 9. a spiral knife; 91. a rotating shaft; 92. a helical cutter; 93. a horizontal cutter; 10. an outer spray blue structure; 101. an outer spray blue body; 102. an annular plate; 103. cutting the plate; 1031. saw teeth; 104. holes.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The use of "vertical," "horizontal," "left," "right," and similar expressions are for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, 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 utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Example 1

As shown in fig. 1-4, an outer blue spray structure 10; comprising the following steps: an outer spray blue body 101 for accommodating slurry and an annular plate 102 disposed around the outer periphery of the outer spray blue body 101; the edge of the annular plate 102 far away from the outer spray blue body 101 is provided with a cutting plate 103; the side surface of the outer spray blue body 101 is provided with a hole 104 for spraying slurry. The annular plate 102 is arranged continuously and uninterruptedly and is used for receiving slurry sprayed from the holes 104 in an acceleration way; the cutting plate 103 is used to cut or break up the slurry strip and form particles as the tower flies down.

As a preferred embodiment, the cutting plate 103 is provided with a notch, preferably a saw tooth 1031; the notches of the saw teeth 1031 are arranged towards the outer spray blue body 101. The setting of this embodiment can make the material strip length after the cutting different, and weight size, flight windage all are different, can disperse the flight in the high tower, and fully cool off to can not lead to the material to pile up same position.

As a preferred embodiment, the annular plate 102 is spirally arranged; the hole 104 is provided on the outer spray blue body 101 between the adjacent spiral annular plates 102. The spiral arrangement can be such that the slurry will be accelerated upwards or downwards, and when it is tangential to the cutting plate 103, it will be bevelled, cut more easily and fly farther.

As a preferred embodiment, the annular plate 102 is arranged in a circular ring shape; the outer spray blue body 101 between the adjacent upper and lower annular plates 102 is provided with the hole 104. The circular ring can horizontally spray out the slurry, so that the spraying is more uniform

As a preferred embodiment, the annular plate 102 is arranged on the outer spray blue body 101 in an upturned manner; the outer spray blue body 101 is in a frustum shape with a large upper part and a small lower part. The body of frustum design can make the pressure when spiral sword 9 is rotatory to push down bigger, more is favorable to bottom particulate matter to spout from hole 104.

Preferably, the diameter of the hole 104 is 8-10mm; the center distance of the hole 104 is 11-20mm; the distance between the adjacent annular plates 102 is 15-30mm. The holes 104 with larger aperture are adopted, so that better particle passing performance is provided, and blocking is prevented more effectively; secondly, by finely setting the gap between the annular plates 102 and the distance between the holes 104, the particle size and speed of granulation can be effectively controlled. While preventing the occurrence of disqualified particle shapes such as stripes.

The invention also provides a granulating device which comprises the outer spray blue structure 10, an inner shaft driving device 1, an outer shaft driving device 2, a shell 3 sleeved on the periphery of the granulating device, an inner shaft 4, an outer shaft 5, a spiral cutter holder 6, an outer spray blue support 8 and a spiral cutter 9; the outer spraying blue structure 10 is arranged on the outer spraying blue support 8, and the outer shaft driving device 2, the outer shaft 5, the outer spraying blue support 8 and the outer spraying blue structure 10 are sequentially connected in a transmission manner; one end of the spiral knife 9 is arranged on the spiral knife holder 6, the other end of the spiral knife 9 extends into the outer blue spraying structure 10, and the inner shaft driving device 2, the inner shaft 5, the spiral knife holder 6 and the spiral knife 9 are sequentially connected in a transmission manner and are used for driving the spiral knife 9 to stir, cut and centrifuge slurry. In this embodiment the inner shaft 4 can be directly connected to the screw blade 9; the screw knife seat 6 can also be connected with the screw knife 9; the outer shaft 5 can be directly connected with the outer blue spraying structure 10 or connected with the outer blue spraying support 8; the outer shaft 5 and the inner shaft 4 may be independently provided in parallel, or the inner shaft 4 may be inserted concentrically into the outer shaft 5. In this embodiment, the inner shaft 4 and the outer shaft 5 are rotatably mounted on a frame or a machine body of the device, and the spiral tool apron 6 and the outer spray blue support 7 are rotatably mounted on the frame machine body. Further specifically, the inner shaft driving device 1 and the outer shaft driving device 2 of the present embodiment may be different motors, or the same power source, and transfer transmission is performed through a transfer device.

As a preferred embodiment, the inner shaft 4 is arranged opposite to the direction of rotation of the outer shaft 5.

As a preferred embodiment, the spiral knife 9 has a conical structure with a big top and a small bottom; the clearance between the spiral knife 9 and the inner wall of the outer spray blue body 101 is 13-20mm. The bottom of the spiral knife 9 is provided with a horizontal cutter 93. The specific spiral cutter 9 comprises a rotating shaft 91 and a spiral cutter 92 spirally encircling the rotating shaft 91; the horizontal cutter 93 is disposed at the bottom end of the rotary shaft 91, and mainly performs the functions of cutting, grinding, and striking the particulate matter.

The working principle of the invention is that slurry enters the outer spray blue body 101 through the feed box 7 which is communicated with the outside and the outer spray blue structure 10; at this time, the spiral knife 9 and the outer blue spraying structure 10 rotate in opposite directions; and the rotation speed of the inner shaft 4 is far higher than that of the outer shaft 5, and the rotation speed of the inner shaft 4 per minute is 1000-3000 revolutions. The rotation direction of the inner shaft 4 is determined by the spiral direction of the spiral blade 9, opposite to the rotation direction of the spiral cutter 92 in the spiral blade 9; at this time, the agglomerate grains are cut by the spiral cutter 92 rotating at a high speed; under the downward pressure provided by the spiral knife 9, the particles move to the bottom, are chopped by the horizontal cutter 93, and simultaneously provide downward pressure for the slurry, so that the slurry is sprayed into the annular plate 102 from the holes 104, further enters the annular plate 102 for acceleration and separation, collides into the cutting plate 103 to form fine line liquid drops, is thrown into the granulating tower, performs heat exchange with countercurrent cold air, and finally contracts into spherical particles under the action of molecular tension.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims

1. A difficult pelleting device that blocks up, its characterized in that: the device comprises an outer spray blue structure, an inner shaft driving device, an outer shaft driving device, an inner shaft, an outer spray blue support and a spiral knife; the outer blue spraying structure comprises an outer blue spraying body, and holes for spraying slurry are formed in the side face of the outer blue spraying body; the outer shaft driving device, the outer shaft and the outer spray blue structure are sequentially connected in a transmission way; the inner shaft driving device, the inner shaft and the spiral knife are sequentially connected in a transmission way, the spiral knife is arranged in the outer spray blue structure, and the bottom of the spiral knife is provided with a horizontal cutter; the spiral knife is used for stirring, cutting and centrifuging the slurry.

2. A non-plugging prilling apparatus according to claim 1, wherein: the rotation direction of the inner shaft and the rotation direction of the outer shaft are opposite; the outer shaft and the inner shaft are concentrically arranged, and the outer shaft is sleeved outside the inner shaft; the inner shaft and the outer shaft are rotatably fixed on a rack of the granulating device; a spiral cutter seat pivoted with the frame of the granulating device is also arranged between the inner shaft and the spiral cutter; and an outer spray blue support pivoted with the frame of the granulating device is also arranged between the outer shaft and the outer spray blue structure.

3. A non-plugging prilling apparatus according to claim 1, wherein: the spiral knife is in a conical structure with a large upper part and a small lower part; the clearance between the spiral knife and the inner wall of the outer spray blue body is 13-20mm.

4. A non-plugging prilling apparatus according to claim 1, wherein: the spiral cutter comprises a rotating shaft and a spiral cutter which is spirally fixed on the rotating shaft; the bottom end of the rotating shaft is fixedly provided with the horizontal cutter.

5. A non-plugging prilling apparatus according to claim 1, wherein: the outer blue spraying structure comprises an outer blue spraying body for containing slurry and an annular plate which is arranged around the outer blue spraying body; and a cutting plate is arranged on the edge, far away from the outer spray blue body, of the annular plate.

6. The non-plugging prilling apparatus of claim 5, wherein: the cutting plate is provided with a notch; the notch is arranged towards the direction of the outward spraying blue body.

7. The non-plugging prilling apparatus of claim 5, wherein: the annular plate is spirally arranged; the holes are arranged on the outer spray blue body between the adjacent spiral annular plates.

8. The non-plugging prilling apparatus of claim 5, wherein: the annular plate is arranged in a circular shape; the holes are arranged on the outer spray blue body between the upper and lower annular plates.

9. The non-plugging prilling apparatus of claim 5, wherein: the annular plate is arranged on the outer spray blue body in an upturned mode; the outer spray blue body is in a frustum shape with a large upper part and a small lower part; the cutting plate is provided with saw teeth; the opening of sawtooth spouts blue body orientation setting outwards.

10. The non-plugging prilling apparatus of claim 5, wherein: the diameter of the hole is 8-10mm; the center distance of the hole is 11-20mm; the distance between adjacent annular plates is 15-30mm.