Melting tank for chemical fertilizer granulation and granulation device

Abstract

The utility model relates to the technical field of granular fertilizer production, in particular to a melting tank for fertilizer granulation and a granulation device. A melting tank for fertilizer granulation comprises a tank body and a stirring device, and the tank body is used for containing slurry; the stirring device is arranged in the tank body and comprises a driving part, a rod body and at least one blade group, the driving part is used for driving the rod body to rotate, each blade group comprises at least two stirring plates which are arranged at intervals in the circumferential direction of the rod body, and an included angle is formed between the plate surface of each stirring plate and the axis of the rod body; the stirring plate is used for enabling slurry to move in the axial direction of the rod body during rotation. In the process that the driving piece drives the stirring set to rotate, due to the fact that the included angle is formed between the plate face of the stirring plate and the axis of the rod body, the stirring set can stir the slurry and can convey the slurry in the axial direction of the rod body, the slurry on the lower layer and the slurry on the upper layer in the tank body can be fully mixed, and the uniformity and liquidity of the slurry are improved.

Description

Technical Field

[0001] The present application relates to the technical field of granular fertilizer production, and particularly relates to a melting tank and a granulating device for fertilizer granulation. Background Art

[0002] In the process of producing compound fertilizers, various compound fertilizer raw materials need to be heated to a molten state and mixed. The slurry formed by mixing is sent to a granulating device for producing compound fertilizer granules after being processed. The mixing and melting processes of the raw materials are generally carried out in a melting tank.

[0003] The melting tank is generally provided with a stirring device, which is used to stir the mixed materials in the melting tank, so that various raw materials are mixed more evenly and the fluidity of the slurry is improved. The existing melting tanks have poor uniformity and fluidity of the slurry due to insufficient stirring, resulting in a low appearance good granule rate and finished product rate of the compound fertilizers produced after being transported to the granulating device. Utility Model Content

[0004] The present application mainly solves the problem of poor uniformity and fluidity of the slurry in the melting tank.

[0005] According to one aspect of the present application, in one embodiment, a melting tank for fertilizer granulation is provided, including a tank body and a stirring device. The tank body is used to accommodate the slurry; the stirring device is arranged in the tank body, and the stirring device includes a driving member, a rod body and at least one set of blade groups. The driving member is used to drive the rod body to rotate. The blade group includes at least two stirring plates arranged at intervals along the circumferential direction of the rod body. The plate surface of the stirring plate forms an angle with the axis of the rod body, and the stirring plate is used to make the slurry move along the axial direction of the rod body when rotating.

[0006] In some embodiments, the blade group is located in the lower half of the tank body, and the plate surface of the stirring plate is used to make the slurry move upward along the axial direction of the rod body.

[0007] In some embodiments, the blade group is located in the upper half of the tank body, and the plate surface of the stirring plate is used to make the slurry move downward along the axial direction of the rod body.

[0008] In some embodiments, the yaw angle of the plate surface of the stirring plate around the axis of the rod body is α, and 35°≤α≤45°.

[0009] In some embodiments, at least two sets of blade groups are provided, and the stirring plates of one set of blade groups are arranged staggeredly in the circumferential direction of the rod body with the stirring plates of the other set of blade groups.

[0010] In some embodiments, the melting tank for fertilizer granulation includes a feed cylinder, which is used to convey raw materials into the interior of the tank body. A slicing plate is arranged inside the feed cylinder. The slicing plate is arranged along the conveying direction of the feed cylinder and is used to slice the raw materials.

[0011] In some embodiments, the feed cylinder includes a cylinder body and a cover body. A window is arranged on the cylinder body, which is used to dredge the raw materials inside the cylinder body. The cover body is movably connected to the cylinder body and is used to close the window.

[0012] In some embodiments, the melting tank for fertilizer granulation includes a temperature control unit. The temperature control unit includes a heating coil. The heating coil is located inside the tank body. The stirring device is arranged inside the heating coil, and steam is used to be introduced into the heating coil to heat the slurry.

[0013] In some embodiments, the temperature control unit includes a flow regulating valve. The flow regulating valve is arranged at the steam inlet of the heating coil and is used to regulate the steam flow inside the heating coil.

[0014] According to one aspect of the present application, in one embodiment, a granulating device is provided, which includes the melting tank for fertilizer granulation according to any one of the above and a granulating unit. The granulating unit is used to form the slurry in the melting tank for fertilizer granulation into particles.

[0015] Based on the melting tank for fertilizer granulation and the granulating device according to the above embodiments, during the process of driving the stirring group to rotate by the driving member, since the plate surface of the stirring plate forms an angle with the axis of the rod body, the stirring group can not only stir the slurry, but also convey the slurry along the axial direction of the rod body, so that the slurry in the lower layer and the upper layer in the tank body can be fully mixed, improving the uniformity and fluidity of the slurry. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of an embodiment of the melting tank for fertilizer granulation in the present utility model;

[0017] Figure 2 is Figure 1 a perspective view of the stirring device in

[0018] Figure 3 is Figure 2 a front view of a stirring group of the stirring device in

[0019] Reference Signs:

[0020] 1. Tank body; 2. Driving member; 3. Rod body; 4. Blade group; 41. Stirring plate; 5. Feed cylinder; 51. Splitting plate; 6. Heating coil; 7. Flow regulating valve. Detailed implementation manners

[0021] The present application will be further described in detail below in conjunction with the accompanying drawings through specific implementation manners. Similar elements in different implementation manners adopt related similar element numbers. In the following implementation manners, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification to avoid the core part of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and the general technical knowledge in the art.

[0022] In addition, the features, operations, or characteristics described in the specification can be combined in any appropriate manner to form various implementation manners, and the operation steps involved in each embodiment can also be reordered or adjusted in an obvious manner for those skilled in the art. Therefore, the specification and the drawings are only for clearly describing a certain embodiment, and do not mean to be the necessary composition and / or order.

[0023] The serial numbers assigned to the components in this article, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, both include direct and indirect connections (couplings).

[0024] In the embodiment of the melting tank for fertilizer granulation of the present utility model, during the process of the driving member 2 driving the stirring group to rotate, since the plate surface of the stirring plate 41 forms an angle with the axis of the rod body 3, the stirring plate 41 can not only make the slurry rotate around the center of the rod body 3, but also make the slurry be conveyed along the axial direction of the rod body 3, so that the slurry in the lower layer and the upper layer inside the tank body 1 can be fully mixed, improving the uniformity and fluidity of the slurry.

[0025] As Figure 1 shown, the melting tank for fertilizer granulation according to the embodiment of the present utility model includes a tank body 1, a stirring device, a feed cylinder 5, and a heating coil 6.

[0026] The trough 1 is used to hold the slurry; a stirring device is arranged inside the trough 1. The stirring device includes a driving member 2, a rod body 3 and at least one set of blade groups 4. The driving member 2 is used to drive the rod body 3 to rotate. The blade group 4 includes at least two stirring plates 41 arranged at intervals in the circumferential direction of the rod body 3. The plate surface of the stirring plate 41 forms an angle with the axis of the rod body 3, and the stirring plate 41 is used to make the slurry move along the axial direction of the rod body 3 when rotating.

[0027] As Figure 1 shown, specifically, the shape of the trough 1 can be cylindrical. A feed cylinder 5 is arranged at the top of the trough 1, and the feed cylinder 5 is used to add the raw materials required for producing chemical fertilizers into the trough 1; a discharge port is arranged at the bottom of the trough 1, and the discharge port is used to discharge the slurry in the trough 1. In the stirring device, the driving member 2 can be a motor, and the upper part of the rod body 3 is in transmission connection with the driving shaft of the motor.

[0028] As Figure 2 shown, three sets of blade groups 4 can be arranged, and the three sets of blade groups 4 are arranged at intervals along the axial direction of the rod body 3; each set of blade groups 4 includes four stirring plates 41, and the included angle between two adjacent stirring plates 41 is 90 degrees.

[0029] In some embodiments, the blade group 4 is located in the lower half of the trough 1, and the plate surface of the stirring plate 41 is used to make the slurry move upward along the axial direction of the rod body 3. When the blade group 4 is located in the lower half of the trough 1, the rotation direction of the rod body 3 can be controlled by the driving member 2, so that the stirring plate 41 conveys the slurry upward along the rod body 3. After the lower-layer slurry is conveyed to the upper layer, it can sink under the action of gravity, so as to form a convection of the upper and lower layer slurries in the trough 1, and the mixing of the slurry is more sufficient and the fluidity is better.

[0030] In some embodiments, the blade group 4 is located in the upper half of the trough 1, and the plate surface of the stirring plate 41 is used to make the slurry move downward along the axial direction of the rod body 3. When the blade group 4 is located in the upper half of the trough 1, the rotation direction of the rod body 3 can be controlled by the driving member 2, so that the stirring plate 41 conveys the slurry downward along the rod body 3. The upper-layer slurry being conveyed downward can lift the lower-layer slurry upward, and in this process, the upper and lower layer slurries are fully mixed, and the mixed slurry has better fluidity.

[0031] In some embodiments, as Figure 2 、 Figure 3 shown, the yaw angle of the plate surface of the stirring plate 41 around the axis of the rod body 3 is α, and 35°≤α≤45°. For example, α can be 40 degrees, 35 degrees or 45 degrees.

[0032] In some embodiments, there are at least two sets of blade groups 4 provided, and the stirring plates 41 of one set of blade groups 4 are arranged staggeredly in the circumferential direction of the rod body 3 with respect to the stirring plates 41 of another set of blade groups 4. The staggered arrangement of the stirring plates 41 in the circumferential direction of the rod body 3 can be understood as: the projections of the two stirring plates 41 of the two sets of blade groups 4 along the axial direction of the rod body 3 do not coincide.

[0033] For example, two sets of blade groups 4 are arranged at intervals on the rod body 3, each blade group 4 is provided with two stirring plates 41, and the angle between the two stirring plates 41 is 180 degrees. When the two blade groups 4 are projected along the axial direction of the rod body 3, four stirring plates 41 can be obtained, and the angle between two adjacent stirring plates 41 in the projection can be 90 degrees. The above arrangement makes the stirring of the slurry by the stirring device more sufficient, which is beneficial to improving the fluidity of the slurry.

[0034] In some embodiments, as Figure 1 shown, the melting tank for fertilizer granulation includes a feed cylinder 5, and the feed cylinder 5 is used to convey raw materials into the interior of the tank body 1. A splitting plate 51 is arranged inside the feed cylinder 5, and the splitting plate 51 is arranged along the conveying direction of the feed cylinder 5, and the splitting plate 51 is used to split the raw materials.

[0035] Specifically, the splitting plate 51 can be a long strip-shaped flat plate and is fixedly connected to the inner wall of the feed cylinder 5. Multiple splitting plates 51 can be provided, and the multiple splitting plates 51 can be arranged on one side of the inner wall of the feed cylinder 5.

[0036] As Figure 1 shown, the splitting plate 51 is arranged on one side of the inner wall of the feed cylinder 5, and the splitting plate 51 is provided with two rows along the direction perpendicular to the conveying direction of the feed cylinder 5. The first row includes two splitting plates 51, and the second row includes three splitting plates 51. The two rows of splitting plates 51 are arranged staggeredly. During the process that the raw materials enter the tank body 1 through the feed cylinder 5, the splitting plate 51 can cut the large pieces of raw materials into small pieces, making the flow rate of the raw materials more uniform when entering the tank body 1, which is beneficial to improving the uniformity of the slurry in the tank body 1.

[0037] In other embodiments, the multiple splitting plates can also be arranged at intervals along the circumferential direction of the inner wall of the feed cylinder. The splitting plate can also be spiral-shaped, and the spiral-shaped splitting plate extends spirally along the inner wall of the feed cylinder.

[0038] In some embodiments, the feed cylinder 5 includes a cylinder body and a cover body. A window is provided on the cylinder body, and the window is used to dredge the raw materials inside the cylinder body. The cover body is movably connected to the cylinder body, and the cover body is used to close the window.

[0039] Specifically, the window can be set in the middle of the cylinder body. The cover body and the cylinder body are rotatably connected by a hinge. During the rotation of the cover body, the window can be opened or closed. Threaded holes can also be provided on the cylinder body, and fixing holes are provided on the cover body. When the cover body is in the state of closing the window, the fixing holes are aligned with the threaded holes, and the operator can use screws to pass through the fixing holes and the threaded holes to fix the cover body and the cylinder body. When the inside of the cylinder body is blocked, the operator can remove the screws, rotate the cover body to open the window, and use tools to dredge the raw materials in the cylinder body through the window. After dredging, rotate the cover body to close the window and screw on the screws.

[0040] In some embodiments, as Figure 1 shown, the melting tank for fertilizer granulation includes a temperature control unit. The temperature control unit includes a heating coil 6. The heating coil 6 is located inside the tank body 1. The stirring device is arranged inside the heating coil 6. Steam is used to be introduced into the heating coil 6 to heat the slurry. The heating coil 6 can heat the slurry in the tank body 1, which is beneficial to improving the fluidity of the slurry. Setting the temperature control unit can regulate the temperature of the slurry and avoid generating other impurities at too high a temperature, which affects the quality of the finished fertilizer.

[0041] In some embodiments, as Figure 1 shown, the temperature control unit includes a flow regulating valve 7. The flow regulating valve 7 is arranged at the steam inlet of the heating coil 6. The flow regulating valve 7 is used to regulate the steam flow in the heating coil 6. Setting the flow regulating valve 7 can regulate the steam flow in the heating coil 6, and thus facilitate the control of the temperature of the slurry.

[0042] The embodiments of the granulation device of the present invention will be described below.

[0043] The granulation device of the embodiment of the present invention includes the melting tank for fertilizer granulation and the granulation unit of any one of the above. The granulation unit is used to form the slurry in the melting tank for fertilizer granulation into particles.

[0044] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention belongs, according to the idea of the present invention, several simple deductions, deformations or substitutions can also be made.

Claims

1. A melting tank for fertilizer granulation, characterized in that: include: A tank body, the tank body being used to contain slurry; And a stirring device, which is arranged in the tank body, and includes a driving member, a rod body and at least one group of blade groups, the driving member is used to drive the rod body to rotate, the blade group includes at least two stirring plates arranged at intervals along the circumferential direction of the rod body, the plate surface of the stirring plate has a swing angle of α around the axis of the rod body, and 35°≤α≤45°, and the stirring plate is used to make the slurry move along the axial direction of the rod body when rotating.

2. The melting tank for fertilizer granulation according to claim 1, characterized in that: The blade group is located at the lower half of the tank body, and the plate surface of the stirring plate is used to make the slurry move upward along the axial direction of the rod body.

3. The melting tank for fertilizer granulation according to claim 1, characterized in that: The blade group is located at the upper half of the tank body, and the plate surface of the stirring plate is used to make the slurry move downward along the axial direction of the rod body.

4. The melting tank for fertilizer granulation according to claim 1, characterized in that: At least two blade groups are provided, wherein the stirring plates of one blade group are staggered in the circumferential direction of the rod body with the stirring plates of the other blade group.

5. The melting tank for fertilizer granulation according to any one of claims 1 to 4, characterized in that: It comprises a feeding barrel, which is used to convey raw materials into the interior of the trough body. A cutting plate is arranged inside the feeding barrel, and the cutting plate is arranged along the conveying direction of the feeding barrel. The cutting plate is used to cut the raw materials.

6. The melting tank for fertilizer granulation according to claim 5, characterized in that: The feed barrel comprises a barrel and a cover. The barrel is provided with a window for clearing the raw material inside the barrel. The cover is movably connected to the barrel and is used to close the window.

7. The melting tank for fertilizer granulation according to any one of claims 1 to 4, characterized in that: It comprises a temperature control unit, which comprises a heating coil, the heating coil is located inside the tank body, the stirring device is arranged inside the heating coil, and the heating coil is used to pass steam to heat the slurry.

8. The melting tank for fertilizer granulation according to claim 7, characterized in that: The temperature control unit comprises a flow regulating valve, which is arranged at the steam inlet of the heating coil and is used to regulate the steam flow in the heating coil.

9. A granulation device, characterized in that: include: A melting tank for fertilizer granulation as claimed in any one of claims 1 to 8; The granulation unit is used to shape the slurry in the melting tank for fertilizer granulation into granules.

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