Lining plate mounting structure and rotary drum granulator

Abstract

The utility model discloses a lining plate installation structure which comprises a cylinder body, a rubber lining plate is arranged on the inner wall of the cylinder body, the rubber lining plate is fixed on the inner wall of the cylinder body through a plurality of long-strip-shaped pressing plates and bolts, and the length extending direction of the long-strip-shaped pressing plates is parallel to the axial direction of the cylinder body. A bulking strip is fixed on one side, facing the inner wall of the barrel, of the rubber lining plate between every two adjacent long-strip pressing plates, and air holes are formed in the corresponding positions of the barrel; the rubber lining plate comprises three layers, the middle layer of the rubber lining plate is a fabric layer, the layer, facing the inner wall of the cylinder body, of the rubber lining plate is a non-working face, and the side, facing the center of the cylinder body, of the rubber lining plate is a working face. The utility model also discloses a rotary drum granulator. The utility model can solve the problems that the lining plate of the conventional rotary drum granulator is adhered to the cylinder wall for a long time and materials are easily adhered to the lining plate.

Description

Technical Field

[0001] The utility model relates to the technical field of fertilizer molding, in particular to a lining plate installation structure and a rotary drum granulator. Background Art

[0002] The drum granulator is a kind of equipment that uses wet granulation, that is, a certain amount of water, steam or slurry is used to make the basic fertilizer fully react chemically after being humidified in the cylinder. Under certain liquid phase conditions, the rotating motion of the cylinder is used to make the material particles agglomerate into balls by extrusion force. However, during the granulation process, the liner in the cylinder is attached to the cylinder wall for a long time, which is easily affected by the corrosion of the cylinder. At the same time, during the granulation process, the material is also easy to stick to the liner, resulting in uneven mixing. If the cylinder is not treated for a long time, it will cause blockage in the drum granulator, which is not conducive to subsequent production and processing operations.

[0003] The Chinese utility model patent with publication number CN206838018U discloses a rotary drum granulator, which drives the liner to be continuously concave and convex through an undulating device to avoid material adhesion, but its structure is complex and the parts are easily damaged, which is not conducive to long-term use. Utility Model Content

[0004] The utility model aims to provide a liner installation structure and a rotary drum granulator, which are used to solve the problems that the liner of the existing rotary drum granulator sticks to the drum wall for a long time and the material is easily adhered to the liner.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] A lining installation structure comprises a cylinder, the inner wall of which is provided with a rubber lining, which is fixed to the inner wall of the cylinder by means of a plurality of long pressure plates and bolts, the length extension direction of the long pressure plates being parallel to the axial direction of the cylinder, a bulging strip is fixed to the rubber lining between two adjacent long pressure plates on the side facing the inner wall of the cylinder, and air holes are provided at corresponding positions of the cylinder; the rubber lining comprises three layers, the middle layer of the rubber lining is a fabric layer, the layer of the rubber lining facing the inner wall of the cylinder is a non-working surface, and the side facing the center of the cylinder is a working surface.

[0007] Optionally, the roughness of the working surface of the rubber lining is higher than the roughness of the non-working surface.

[0008] Optionally, the number of the long pressure plates is six and they are evenly distributed, dividing the rubber lining on the inner wall of the cylinder into six equal pieces.

[0009] Optionally, the cylinder body is divided into a liner installation section and a smooth discharge section, the length of the liner installation section is longer than that of the smooth discharge section, and the rubber liner is installed in the liner installation section.

[0010] The utility model also discloses a rotary drum granulator, comprising a cylinder, a driving device, a front supporting roller device and a rear supporting roller device. The cylinder is horizontally arranged, and the inner wall of the cylinder is provided with a rubber lining, which is installed as the lining mounting structure described above; one end of the cylinder is a feed port, and the other end of the cylinder is provided with a discharge box, a large gear ring, a front wheel belt and a rear wheel belt are fixed to the outer periphery of the cylinder, the cylinder is supported on the front supporting roller device and the rear supporting roller device through the front wheel belt and the rear wheel belt, and the driving device drives the cylinder to rotate by driving the large gear ring.

[0011] Optionally, a spray assembly extending into the inner cavity of the barrel is provided at the feed inlet end of the barrel.

[0012] Optionally, a plurality of annular speed-limiting blocking plates are fixed to the inner wall of the cylinder.

[0013] Optionally, the discharge box is supported by a bracket, the bottom of the discharge box is a discharge port, and the top of the discharge box is provided with an auxiliary port.

[0014] By adopting the above technical solution, the utility model has the following advantages:

[0015] The utility model provides a drum-forming strip in the lining structure, which can structurally expand the space between the inner wall of the cylinder and the rubber lining, making it easier for outside air to enter and fill the space through the air holes, without causing the rubber lining to cling to the inner wall of the cylinder. It is also easier for the rubber lining located at a high position to arch vertically as the cylinder rotates. The rubber lining rises and falls as the cylinder rotates, reducing the adhesion of the material to the rubber lining. The fabric layer provided on the rubber lining can improve the toughness and avoid breakage due to frequent fluctuations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a main structural schematic diagram of the utility model;

[0018] Figure 3 It is a schematic diagram of the installation structure of the rubber lining in the utility model;

[0019] Figure 4 yes Figure 3 Schematic diagram of the local structure of the middle rubber lining;

[0020] Figure 5 It is a schematic diagram of the relative positions of the liner installation section and the smooth discharge section in the cylinder of the utility model.

[0021] Figure numerals: 1. cylinder, 2. rubber lining, 3. long pressure plate, 4. drum strip, 5. air hole, 6. fabric layer, 7. non-working surface, 8. working surface, 9. smooth discharge section, 10. driving device, 11. front supporting wheel device, 12. rear supporting wheel device, 13. discharge box, 14. large gear ring, 15. front wheel belt, 16. rear wheel belt, 17. spray assembly, 18. speed limiting barrier plate, 19. bracket, 20. discharge port, 21. auxiliary port. DETAILED DESCRIPTION

[0022] In order to make the technical purpose, technical scheme and beneficial effects of the utility model clearer, the following Figure 1-5 The technical solution of the utility model is further illustrated with specific embodiments. Example 1

[0023] A lining installation structure includes a cylinder 1, the inner wall of the cylinder 1 is provided with a rubber lining 2, the rubber lining 2 can be a whole ring-shaped piece fixed to the inner wall of the cylinder 1, or multiple rubber linings 2 can be spread around the inner wall of the cylinder 1, the rubber lining 2 is fixed to the inner wall of the cylinder 1 by multiple long pressing plates 3 and bolts, the length extension direction of the long pressing plates 3 is parallel to the axial direction of the cylinder 1, the rubber lining 2 between two adjacent long pressing plates 3 is fixed with a drum strip 4 on the side facing the inner wall of the cylinder 1, and the corresponding position of the cylinder 1 is opened with an air hole 5; the rubber lining 2 includes three layers, the middle layer of the rubber lining 2 is a fabric layer 6, the layer of the rubber lining 2 facing the inner wall of the cylinder 1 is a non-working surface 7, and the side facing the center of the cylinder 1 is a working surface 8.

[0024] The drum-lifting strips 4 can structurally open up the space between the inner wall of the cylinder 1 and the rubber lining 2, making it easier for outside air to enter and fill the space from the air holes 5, without causing the rubber lining 2 to cling to the inner wall of the cylinder 1. When the cylinder 1 is made of iron material, the rubber lining 2 is not easily corroded by the iron cylinder 1, thereby extending its service life. At the same time, since the drum-lifting strips 4 separate the rubber lining 2 from the inner wall of the cylinder 1, the rubber lining 2 located at a high position as the cylinder 1 rotates is more likely to sag under the action of gravity, and the rubber lining 2 rises and falls as the cylinder 1 rotates, thereby reducing the adhesion of the material to the rubber lining 2. The rubber lining 2 is provided with a fabric layer 6, which can improve the toughness of the rubber lining 2, making it less likely to break, thereby extending its service life.

[0025] Furthermore, the roughness of the working surface 8 of the rubber lining 2 is higher than the roughness of the non-working surface 7, which can also prevent material adhesion.

[0026] Furthermore, the number of the long pressing plates 3 is six and they are evenly distributed, dividing the rubber lining 2 on the inner wall of the cylinder 1 into six equal parts.

[0027] Furthermore, the cylinder 1 is divided into a liner installation section and a smooth discharge section 9, the length of the liner installation section is longer than the length of the smooth discharge section 9, so as to fully granulate, and the rubber liner 2 is installed in the liner installation section. In a specific embodiment, the length ratio of the liner installation section to the smooth discharge section 9 can be 3:1, and the smooth discharge section 9 is coated with polypropylene to improve the smoothness of the section and facilitate granulation and discharge. Example 2

[0028] A rotary drum granulator comprises a cylinder 1, a driving device 10, a front supporting roller device 11 and a rear supporting roller device 12. The cylinder 1 is horizontally arranged, and the inner wall of the cylinder 1 is provided with a rubber lining 2, which is installed as the lining mounting structure described in Example 1; one end of the cylinder 1 is a feed port, and the other end of the cylinder 1 is provided with a discharge box 13. A large gear ring 14, a front wheel belt 15 and a rear wheel belt 16 are fixed to the outer periphery of the cylinder 1. The cylinder 1 is supported on the front supporting roller device 11 and the rear supporting roller device 12 through the front wheel belt 15 and the rear wheel belt 16. The driving device 10 drives the cylinder 1 to rotate by driving the large gear ring 14.

[0029] When the drum granulator is working, the driving device 10 drives the large gear ring 14 to drive the drum 1 to rotate, and the front wheel belt 15 and the rear wheel belt 16 cooperate with the front supporting wheel device 11 and the rear supporting wheel device 12 to assist the rotation of the drum 1. The material enters the drum 1 from the feed port. During the rotation of the drum 1, the extrusion force is generated between the material particles and agglomerates into balls. At the same time, the rubber lining 2 is constantly convex and concave to shake off the bonded material to avoid blockage in the drum granulator. The final granules are discharged from the discharge box 13 through the other end of the drum 1.

[0030] Furthermore, a spray assembly 17 extending into the inner cavity of the cylinder 1 is provided at the feed port end of the cylinder 1, and slurry, steam or water is sprayed into the cylinder 1 through the spray assembly 17. Compared with the method of directly using a pipeline, the nozzle spraying is more uniform and delicate.

[0031] Furthermore, a plurality of annular speed limiting material blocking plates 18 are fixed to the inner wall of the cylinder 1, which can slow down the axial running speed of the material in the cylinder 1, thereby extending the residence time of the material in the cylinder 1, increasing the tumbling times of the material, making the particle size of the material more uniform, and improving the granulation quality of the material.

[0032] Further, the discharge box 13 is supported by a bracket 19, the bottom of the discharge box 13 is a discharge port 20, and the top of the discharge box 13 is provided with an auxiliary port 21. The auxiliary port 21 can be connected to a dust removal device through a flange to improve the cleanliness of the production environment, or can be directly closed by a flange.

[0033] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0035] The above embodiments do not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

[0036] It should be understood that although this specification is described according to 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 lining plate installation structure, comprising a cylinder, the inner wall of which is provided with a rubber lining plate, characterized in that: The rubber lining is fixed to the inner wall of the cylinder by a plurality of long pressure plates and bolts. The length extension direction of the long pressure plates is parallel to the axial direction of the cylinder. A bulging strip is fixed on the rubber lining between two adjacent long pressure plates on the side facing the inner wall of the cylinder, and air holes are opened at the corresponding positions of the cylinder. The rubber lining includes three layers. The middle layer of the rubber lining is a fabric layer. The layer of the rubber lining facing the inner wall of the cylinder is a non-working surface, and the side facing the center of the cylinder is a working surface.

2. A liner installation structure according to claim 1, characterized in that: The roughness of the working surface of the rubber lining is higher than that of the non-working surface.

3. A liner installation structure according to claim 1, characterized in that: The number of the long pressing plates is six and they are evenly distributed, dividing the rubber lining plate on the inner wall of the cylinder into six equal parts.

4. A liner installation structure according to claim 1, characterized in that: The cylinder body is divided into a liner installation section and a smooth discharge section. The length of the liner installation section is longer than that of the smooth discharge section. The rubber liner is installed in the liner installation section.

5. A rotary drum granulator, comprising a drum, a driving device, a front supporting wheel device and a rear supporting wheel device, wherein the drum is arranged horizontally, the inner wall of the drum is provided with a rubber lining, one end of the drum is a feed port, and the other end of the drum is provided with a discharge box, a large gear ring, a front wheel belt and a rear wheel belt are fixed to the outer periphery of the drum, the drum is supported on the front supporting wheel device and the rear supporting wheel device through the front wheel belt and the rear wheel belt, and the driving device drives the drum to rotate by driving the large gear ring, characterized in that: The rubber lining is installed according to the lining installation structure described in any one of claims 1-4.

6. A rotary drum granulator according to claim 5, characterized in that: The feed inlet end of the cylinder is provided with a spray component extending into the inner cavity of the cylinder.

7. A rotary drum granulator according to claim 5, characterized in that: A plurality of annular speed-limiting blocking plates are also fixed on the inner wall of the cylinder.

8. A rotary drum granulator according to claim 5, characterized in that: The discharge box is supported by a bracket, the bottom of the discharge box is a discharge port, and the top of the discharge box is provided with an auxiliary port.

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