Large granular urea granulation equipment

Abstract

The utility model relates to the technical field of urea production, in particular to large granular urea granulation equipment which comprises a bin body, an extrusion mechanism is arranged in the bin body, a discharging mechanism is arranged on the outer side of the bin body, and the discharging mechanism comprises a screening assembly, a spiral feeding mechanism fixedly installed at the lower end of the bin body and a cleaning assembly fixedly installed on the surface of one side of the bin body. The device is fixedly installed on the inner surface of the bin body. According to the device, the first spiral blade rotates in the filter cylinder, formed large-particle urea rolls and rubs with one another, flashes on the formed edge of the large-particle urea fall off, then the second spiral blade rotates, the screened flashes are moved out and redistributed into the stock bin through the spiral feeding mechanism, and the large-particle urea is discharged through the discharging mechanism. And meanwhile, grooves in the surfaces of the extrusion rollers are cleaned through the cleaning assembly, large-particle urea clamped in the grooves is swept off, the situation that the large-particle urea is extruded and damaged again is avoided, and therefore the content of crushed materials and powder in the urea is reduced, and the granulation forming effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of urea production, in particular to large-particle urea granulation equipment. Background Art

[0002] Large-particle urea is suitable for various soils and various crops. It is a nitrogen fertilizer containing high nitrogen nutrients and can be used as base fertilizer and topdressing. The speed of the large-particle urea ammoniation process is related to the moisture, temperature, organic matter content, and pH value in the soil. It is also affected by factors such as soil type and fertilization depth. In the large-particle urea production process, urine is evaporated and separated, and then sent to the large-particle granulation device by a melt pump.

[0003] Existing large-particle granulation is usually carried out through an extrusion granulator. Urea powder is squeezed through the grooves on the surface of two extrusion rollers and then falls freely. A small amount of large-particle urea after extrusion will be stuck in the grooves on the surface of the extrusion rollers. With the next rotation, urea powder is re-stacked for secondary extrusion. Excessive extrusion force will cause the urea granules to break. After this part of urea falls, the powder content in the large-particle urea product will increase. At the same time, after the large-particle urea is extruded, there will be flash on its edge. When it falls and bumps, this part of the flash will fall off, resulting in an increase in the content of broken materials and powder in the urea, and poor granulation effect. Utility Model Content

[0004] The purpose of the present invention is to provide a large-particle urea granulation device to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The large-particle urea granulation equipment includes a silo, an extrusion mechanism is provided inside the silo, and a feeding mechanism is provided outside the silo. The feeding mechanism includes:

[0007] A screening assembly is fixedly mounted on the lower end of the silo, the screening assembly comprising a cylinder fixedly mounted on the lower end of the silo, a filter cartridge fixedly mounted inside the cylinder, a second rotating shaft rotatably connected inside the filter cartridge, a first spiral blade fixedly mounted on the outer surface of the second rotating shaft, and a second spiral blade rotatably connected inside the cylinder;

[0008] The spiral feeding mechanism is fixedly installed on one side of the warehouse;

[0009] The cleaning component is fixedly installed on the inner surface of the warehouse.

[0010] Furthermore, one end of the filter cartridge passes through the cylinder, a discharge port is provided on the surface of one end of the filter cartridge, and one end of the No. 2 spiral blade is fixedly connected to the No. 2 rotating shaft.

[0011] Furthermore, a hopper is fixedly mounted on the upper end surface of the hopper body, a No. 1 rotating shaft is rotatably connected inside the hopper, a plurality of inclined plates are fixedly mounted at equal intervals on the outer surface of the No. 1 rotating shaft, a No. 1 motor is fixedly mounted on one end surface of the hopper, and an output end of the No. 1 motor is fixedly connected to the No. 1 rotating shaft.

[0012] Preferably, a No. 2 motor is fixedly mounted on the other end surface of the cylinder, an output end of the No. 2 motor is fixedly connected to the No. 2 rotating shaft, and a material guide plate is fixedly embedded in the other end surface of the cylinder.

[0013] Preferably, the lower end of the spiral feeding mechanism is fixedly connected to the guide plate, and the upper end of the spiral feeding mechanism is fixedly connected to the silo.

[0014] Further, the cleaning component includes:

[0015] Two brush rollers are symmetrically connected to the brush rollers inside the silo;

[0016] The belt transmission assembly is fixedly connected to the surfaces of one ends of the two brush rollers.

[0017] Preferably, a No. 3 motor is fixedly mounted on the other side surface of the bin body, and an output end of the No. 3 motor is fixedly connected to a brush roller.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The No. 1 motor drives the No. 1 rotating shaft and the inclined plate to rotate, so that the urea powder is evenly discharged from the bottom of the silo, and the powder falls evenly between the two extrusion rollers for extrusion molding, avoiding the loosening of large urea particles caused by insufficient extrusion force due to less powder, and improving the molding effect.

[0020] 2. The extruded large urea particles fall into the filter cartridge. The No. 2 motor rotates, driving the No. 1 spiral blade to rotate, causing the large urea particles to roll inside the filter cartridge and be discharged from the discharge port. During this process, the flash on the surface of the powder and large urea particles pass through the filter cartridge and fall into the cylinder. At this time, the No. 2 spiral blade rotates, pushing the powder and large urea particles from the guide plate into the spiral feeding mechanism, and then re-input into the hopper for extrusion molding. As a result, the large urea particles after molding roll and rub against each other, causing the flash on the molding edge to fall off and be screened, reducing the content of broken materials and powder in urea and improving the molding effect of granulation.

[0021] 3. The No. 3 motor runs, driving the two brush rollers to rotate, cleaning the grooves on the surface of the extrusion roller and sweeping off the large urea particles stuck inside to prevent them from being squeezed and damaged again, reducing the content of broken materials and powder in the urea and improving the granulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the overall side sectional structure of the utility model;

[0024] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0025] Figure 4 It is a schematic diagram of the overall vertical cross-section structure of the utility model;

[0026] Figure 5 It is a schematic diagram of the cross-sectional split structure of the screening component in the utility model.

[0027] In the figure: 1. Bin body; 101. Extrusion mechanism; 102. Bin; 103. Rotating shaft No. 1; 104. Inclined plate; 105. Motor No. 1; 2. Screening assembly; 201. Cylinder; 202. Filter cartridge; 203. Rotating shaft No. 2; 204. Spiral blade No. 1; 205. Spiral blade No. 2; 206. Discharge port; 207. Guide plate; 208. Motor No. 2; 3. Spiral feeding mechanism; 4. Cleaning assembly; 401. Brush roller; 402. Belt drive assembly; 403. Motor No. 3. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-5 In the embodiment of the present invention, the large-particle urea granulation equipment includes a silo 1, an extrusion mechanism 101 is provided inside the silo 1, and a feeding mechanism is provided outside the silo 1. The feeding mechanism includes: a screening component 2 is fixedly installed at the lower end of the silo 1, and the screening component 2 includes a cylinder 201 fixedly installed at the lower end of the silo 1, a filter cartridge 202 is fixedly installed inside the cylinder 201, and a No. 2 rotating shaft 203 is rotatably connected inside the filter cartridge 202. A No. 1 spiral blade 204 is fixedly installed on the outer surface of the No. 2 rotating shaft 203, and a No. 2 spiral blade 205 is rotatably connected inside the cylinder 201. The spiral feeding mechanism 3 is fixedly installed on the surface of one side of the silo 1, and the cleaning component 4 is fixedly installed on the inner surface of the silo 1.

[0030] Specifically, the extrusion mechanism 101 extrude and granulate the urea powder, and the screening component 2 screens the fallen large urea particles, screens the powder on the outside, and screens the flash on the outside, and re-transports it into the silo 102 through the spiral feeding mechanism 3. Example 1

[0031] like Figure 2 、 Figure 4 and Figure 5 As shown, in this embodiment, one end of the filter cartridge 202 passes through the cylinder 201, and a discharge port 206 is provided on the surface of one end of the filter cartridge 202. One end of the No. 2 spiral blade 205 is fixedly connected to the No. 2 rotating shaft 203; the No. 2 motor 208 is fixedly installed on the surface of the other end of the cylinder 201, and the output end of the No. 2 motor 208 is fixedly connected to the No. 2 rotating shaft 203. A guide plate 207 is fixedly embedded and installed on the surface of the other end of the cylinder 201; the lower end of the spiral feeding mechanism 3 is fixedly connected to the guide plate 207, and the upper end of the spiral feeding mechanism 3 is fixedly connected to the silo 102.

[0032] In this embodiment, the extruded large-particle urea falls from the gaps on the surface of the cylinder 201 and the filter cartridge 202 into the interior of the filter cartridge 202. The No. 2 motor 208 rotates, driving the No. 1 spiral blade 204 to rotate, causing the large-particle urea to roll inside the filter cartridge 202 and be discharged from the discharge port 206. During this process, the flash on the surface of the powder and large-particle urea falls into the interior of the cylinder 201 through the filter cartridge 202. At this time, the No. 2 spiral blade 205 rotates, pushing the powder and large-particle urea from the guide plate 207 into the spiral feeding mechanism 3, and re-inputting them into the hopper 102 for extrusion molding. As a result, the large-particle urea after molding rolls and rubs against each other, causing the flash at the molding edge to fall off and be screened, thereby reducing the content of broken materials and powder in the urea and improving the molding effect of granulation.

[0033] like Figure 2 and Figure 3 As shown, in this embodiment, the cleaning component 4 includes: two brush rollers 401 symmetrically rotated and connected to the brush rollers 401 inside the silo 102, and the belt transmission component 402 is fixedly connected to the surface of one end of the two brush rollers 401; a No. 3 motor 403 is fixedly installed on the other side surface of the silo body 1, and the output end of the No. 3 motor 403 is fixedly connected to a brush roller 401.

[0034] During specific implementation, the No. 3 motor 403 runs, driving the two brush rollers 401 to rotate, so that the brush rollers 401 brush the large urea particles stuck on the surface of the extrusion roller of the extrusion mechanism 101, clean the grooves on the surface of the extrusion roller, and sweep away the large urea particles stuck inside it to prevent these large urea particles from being squeezed and damaged again, reduce the content of broken materials and powder in the urea, and improve the granulation molding effect. Example 2

[0035] On the basis of the first embodiment, in order to make up for the problem that urea powder is not easy to load uniformly.

[0036] like Figure 2 and Figure 4 As shown, in this embodiment, a silo 102 is fixedly mounted on the upper end surface of the silo body 1, a rotating shaft 103 is rotatably connected inside the silo 102, a plurality of inclined plates 104 are fixedly mounted at equal intervals on the outer surface of the rotating shaft 103, a motor 105 is fixedly mounted on one end surface of the silo 102, and an output end of the motor 105 is fixedly connected to the rotating shaft 103.

[0037] During specific implementation, the No. 1 motor 105 runs, driving the No. 1 rotating shaft 103 and the inclined plate 104 to rotate. The multiple inclined plates 104 on one side push the urea powder to one side, and the multiple inclined plates 104 on the other side push the urea powder to the other side, so that the urea powder is evenly discharged from the bottom of the silo 102, and the powder falls evenly between the two extrusion rollers for extrusion molding, avoiding the looseness caused by insufficient extrusion force of large-particle urea due to less powder, thereby improving the molding effect.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0039] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A large-particle urea granulation device, comprising a silo (1), wherein an extrusion mechanism (101) is provided inside the silo (1), characterized in that: A material discharge mechanism is provided on the outside of the bin body (1), and the material discharge mechanism comprises: A screening assembly (2) is fixedly mounted on the lower end of the silo (1), the screening assembly (2) comprising a cylinder (201) fixedly mounted on the lower end of the silo (1), a filter cartridge (202) fixedly mounted inside the cylinder (201), a second rotating shaft (203) rotatably connected inside the filter cartridge (202), a first spiral blade (204) fixedly mounted on the outer surface of the second rotating shaft (203), and a second spiral blade (205) rotatably connected inside the cylinder (201); A spiral feeding mechanism (3) is fixedly mounted on a side surface of the bin body (1); The cleaning component (4) is fixedly mounted on the inner surface of the bin body (1).

2. The large-particle urea granulation equipment according to claim 1, characterized in that: One end of the filter cartridge (202) passes through the cylinder (201), a discharge port (206) is provided on the surface of one end of the filter cartridge (202), and one end of the second spiral blade (205) is fixedly connected to the second rotating shaft (203).

3. The large-particle urea granulation equipment according to claim 1, characterized in that: A material bin (102) is fixedly mounted on the upper end surface of the bin body (1), a first rotating shaft (103) is rotatably connected to the interior of the material bin (102), a plurality of inclined plates (104) are fixedly mounted at equal intervals on the outer surface of the first rotating shaft (103), a first motor (105) is fixedly mounted on one end surface of the material bin (102), and an output end of the first motor (105) is fixedly connected to the first rotating shaft (103).

4. The large-particle urea granulation equipment according to claim 2, characterized in that: A second motor (208) is fixedly mounted on the other end surface of the cylinder (201), and an output end of the second motor (208) is fixedly connected to the second rotating shaft (203). A material guide plate (207) is fixedly embedded and mounted on the other end surface of the cylinder (201).

5. The large-particle urea granulation equipment according to claim 4, characterized in that: The lower end of the spiral feeding mechanism (3) is fixedly connected to the material guide plate (207), and the upper end of the spiral feeding mechanism (3) is fixedly connected to the material bin (102).

6. The large-particle urea granulation equipment according to claim 1, characterized in that: The cleaning component (4) comprises: Two brush rollers (401) are symmetrically rotated and connected to the brush rollers (401) inside the silo (102); The belt transmission assembly (402) is fixedly connected to one end surface of the two brush rollers (401).

7. The large-particle urea granulation equipment according to claim 6, characterized in that: A third motor (403) is fixedly mounted on the other side surface of the bin body (1), and an output end of the third motor (403) is fixedly connected to a brush roller (401).

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