A material guiding structure of an extrusion gear granulator

Abstract

The utility model relates to powder raw material granulating mechanical equipment technical field, concretely relates to a kind of material guiding structure of extrusion gear type granulator, including ring mould, press roll and distribution plate, the inner side wall of ring mould is equipped with internal tooth, radial is equipped with die hole, the outer side wall of press roll is equipped with the external tooth matched with internal tooth, multiple press rolls are arranged in the ring mould with circumferential array, and are engaged with ring mould, the space between adjacent two press rolls forms chamber, distribution plate is arranged on the top of chamber by the center of ring mould to inner side wall downwardly inclined, and the outer edge of distribution plate is close to the upper portion of internal tooth setting. When material falls to distribution plate, move to the outer edge of distribution plate close to the upper portion of internal tooth of ring mould under the action of its gravity, and fall into chamber along the upper portion of inner side wall of ring mould, material can be extruded from die hole after being extruded by internal tooth and external tooth during falling, can improve the overall die hole utilization of ring mould, to improve the production efficiency of granulator.

Description

Technical Field

[0001] This utility model belongs to the technical field of powder raw material granulation machinery and equipment, specifically relating to a material guiding structure of an extrusion gear granulator. Background Technology

[0002] A granulator is a device that extrudes powdery materials into granules, and it is widely used in the feed and fertilizer industries. A traditional ring die granulator uses a rotating ring die to drive a driven roller within the die chamber, forcing the material entering the chamber through die holes around the inner circle of the ring die to form granules.

[0003] Patent document CN113244851A discloses a planetary gear equal-volume extrusion gear granulator, relating to the field of granulation machinery and equipment technology. It includes a ring die and a pressure roller. The ring die includes a ring die body with a cylindrical structure, and internal teeth are provided on the inner sidewall of the ring die body. A die hole is radially through the ring die. The pressure roller includes a pressure roller body with a cylindrical structure, and external teeth that match the internal teeth are fixedly provided on the outer circumference of the pressure roller body. The pressure roller meshes with the ring die. The gear meshing is a line contact with a small contact area, resulting in low friction and thus reducing unnecessary frictional losses.

[0004] The aforementioned patent describes a ring die with multiple sets of die holes from top to bottom. Material enters the chamber directly and moves to the inner wall of the ring die under centrifugal force, where it is extruded into granules by the pressure rollers through the die holes on the inner circumference of the ring die. However, in actual use, it has been found that material within the chamber has difficulty entering the die holes in the upper half of the ring die, resulting in a very low overall die hole utilization rate and thus limiting the production efficiency of the granulator. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention proposes a material guiding structure for an extrusion gear granulator, which can improve the overall die hole utilization rate of the ring die, thereby increasing the production efficiency of the granulator.

[0006] To solve the above-mentioned technical problems, this utility model provides a material guiding structure for an extrusion gear granulator, comprising:

[0007] A ring die, wherein the inner sidewall of the ring die is provided with internal teeth and a die hole is provided radially;

[0008] The pressure roller has external teeth on its outer side wall that match the internal teeth. Multiple pressure rollers are arranged in a circumferential array inside the ring mold and mesh with the ring mold. The space between two adjacent pressure rollers forms a cavity.

[0009] The material distribution plate is inclined downward from the center of the ring mold to the upper part of the cavity, and the outer edge of the material distribution plate is located near the upper part of the internal teeth.

[0010] Preferably, the above solution further includes a rotating shaft and a support. The rotating shaft is coaxially arranged with the ring die, and the support is located at the upper end of the rotating shaft and is rotatably connected to the pressure roller.

[0011] Preferably, in the above scheme, the support includes a throwing plate and an upper connecting plate. The throwing plate is located below the ring die and is rotatably connected to the lower end of the pressure roller. The upper connecting plate is located above the ring die and is rotatably connected to the upper end of the pressure roller.

[0012] Preferably, in the above scheme, the bracket further includes a ring die centering plate, which is disposed on the upper surface of the throwing disc and coaxially arranged with the ring die, and the periphery of the ring die centering plate is slidably connected to the inner sidewall of the ring die.

[0013] Preferably, in the above scheme, the upper connecting plate is configured as a fan-shaped structure so that a fan-shaped opening is formed above the chamber, and the material distribution plate is disposed in the fan-shaped opening and fixedly connected to the upper connecting plate.

[0014] Preferably, in the above scheme, the material distribution plate includes a mounting part and a blade, the mounting part is located at the leading edge of the blade and connected to the trailing edge of the upper connecting plate.

[0015] Preferably, in the above scheme, the blade gradually slopes downward from the leading edge to the trailing edge, and gradually slopes downward from the inner edge to the outer edge. The outer edge of the blade extends to the upper part of the inner teeth, and a gap is left between the blade and the inner teeth.

[0016] Preferably, in the above scheme, the projection of the blade matches the fan-shaped opening, and a space is left between the trailing edge of the blade and the upper connecting plate.

[0017] Preferably, the above solution further includes a feeding hopper, the upper opening of which extends above the pressure roller, and the lower periphery of the feeding hopper is connected to the upper periphery of the ring die.

[0018] Preferably, in the above scheme, the mold hole is located at the top of the inner tooth and the bottom of the tooth groove between two adjacent inner teeth.

[0019] Compared with existing technologies, this utility model has the following beneficial effects:

[0020] 1. The material guiding structure of the extrusion gear granulator of this utility model includes a ring die, a pressure roller and a distribution plate. When the material falls onto the distribution plate, it moves to the outer edge of the distribution plate near the upper part of the inner teeth of the ring die under its own gravity, and falls into the cavity along the inner side wall of the ring die. During the falling process, the material can be squeezed by the inner and outer teeth and squeezed out from the die hole, which can improve the overall die hole utilization rate of the ring die, thereby improving the production efficiency of the granulator.

[0021] 2. The upper connecting plate in this utility model is configured as a fan-shaped structure to form a fan-shaped opening above the chamber. The material distribution plate includes an installation part and blades. The installation part is located at the leading edge of the blades and is connected to the trailing edge of the upper connecting plate. The blades gradually slope downward from the leading edge to the trailing edge and from the inner edge to the outer edge. The outer edge of the blades extends to the upper part of the inner teeth and leaves a gap with the inner teeth. Under the action of gravity and centrifugal force, the material can move towards the trailing edge and outer edge of the blades and fall into the chamber from the upper part near the inner teeth, making the material flow smoother and the distribution more uniform.

[0022] 3. In this utility model, the projection of the blade matches the fan-shaped opening, and there is a space between the trailing edge of the blade and the upper connecting plate. Some material can fall directly into the cavity from the trailing edge of the blade. After being subjected to the centrifugal force when the ring die centering plate rotates, it moves to the inner wall of the ring die and is squeezed by the inner and outer teeth and squeezed out from the die hole at the bottom of the inner wall, thus ensuring feeding efficiency and die hole utilization. Attached Figure Description

[0023] Figure 1 This is a first-view installation structure diagram of the material guiding structure of an extrusion gear granulator according to the present invention.

[0024] Figure 2 This is a second-view installation structure diagram of the material guiding structure of an extrusion gear granulator according to the present invention.

[0025] Figure 3 This is a schematic diagram of the internal structure of the ring mold of this utility model.

[0026] Figure 4 This is a schematic diagram of the installation structure of the material distribution plate and the pressure roller of this utility model.

[0027] Figure 5 This is a schematic diagram of the installation structure of the material distribution plate and the ring die of this utility model.

[0028] Among them, 1-ring die, 11-inner teeth, 12-die hole, 2-pressure roller, 21-outer teeth, 22-cavity, 3-material distribution plate, 31-installation part, 32-blade, 4-rotating shaft, 5-bracket, 51-throwing plate, 52-upper connecting plate, 53-ring die centering plate, 54-fan-shaped opening, 6-feed hopper. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0033] like Figures 1 to 5As shown, this utility model discloses a material guiding structure for an extrusion gear granulator, including a ring die 1, a pressure roller 2, and a distribution plate 3. The inner sidewall of the ring die 1 is provided with internal teeth 11, and a die hole 12 is radially opened. The outer sidewall of the pressure roller 2 is provided with external teeth 21 that match the internal teeth 11. Multiple pressure rollers 2 are arranged in a circumferential array inside the ring die 1 and mesh with the ring die 1. The space between two adjacent pressure rollers 2 forms a cavity 22. The distribution plate 3 is inclined downward from the center of the ring die 1 to the inner sidewall above the cavity 22, and the outer edge of the distribution plate 3 is arranged near the upper part of the internal teeth 11.

[0034] It should be understood that, during operation, the pressure roller 2 is driven to rotate by a power unit, just like the existing ring die granulator, so that the pressure roller 2 and the ring die 1 mesh with each other and rotate relative to each other. The ring die 1 is set to a fixed state. When the material falls onto the distribution plate 3, it moves to the upper part of the outer edge of the distribution plate 3 near the inner teeth 11 under its own gravity, and falls into the chamber 22 along the inner side wall of the ring die 1. During the falling process, the material can be squeezed by the inner teeth 11 and the outer teeth 21 and squeezed out from the die hole 12, which can improve the overall die hole 12 utilization rate of the ring die 1, thereby improving the production efficiency of the granulator.

[0035] Specifically, this embodiment also includes a rotating shaft 4 and a support 5. The rotating shaft 4 is coaxially arranged with the ring die 1. The support 5 is located at the upper end of the rotating shaft 4 and is rotatably connected to the pressure roller 2. When the power device drives the rotating shaft 4 to rotate, the support 5 drives the pressure roller 2 and the ring die 1 to mesh and rotate relative to each other. Further, the support 5 includes a throwing disc 51 and an upper connecting plate 52. The throwing disc 51 is located below the ring die 1 and is rotatably connected to the lower end of the pressure roller 2. The upper connecting plate 52 is located above the ring die 1 and is rotatably connected to the upper end of the pressure roller 2.

[0036] In this embodiment, the bottom of the ring die 1 is slidably connected to the throwing disk 51, and a gap is left between the top of the ring die 1 and the upper connecting plate 52. Preferably, the bracket 5 also includes a ring die centering plate 53, which is disposed on the upper surface of the throwing disk 51 and coaxially arranged with the ring die 1. The periphery of the ring die centering plate 53 is slidably connected to the inner sidewall of the ring die 1, and the ring die centering plate 53 rotates synchronously with the throwing disk 51.

[0037] Continue to refer to Figure 3 In this embodiment, the upper connecting plate 52 is configured as a fan-shaped structure, so that a fan-shaped opening 54 is formed above the chamber 22. The material distribution plate 3 is disposed in the fan-shaped opening 54 and is fixedly connected to the upper connecting plate 52. Specifically, the material distribution plate 3 includes a mounting part 31 and a blade 32. The mounting part 31 is disposed at the leading edge of the blade 32 and is connected to the trailing edge of the upper connecting plate 52.

[0038] Furthermore, the blade 32 gradually slopes downward from the leading edge to the trailing edge, and also gradually slopes downward from the inner edge to the outer edge. The outer edge of the blade 32 extends to the upper part of the inner teeth 11, and a gap is left between the blade 32 and the inner teeth 11. It should be understood that when the material falls into the upper surface of the blade 32 from above the fan-shaped opening 54, when the rotating shaft 4 in this embodiment rotates clockwise, the material can move towards the trailing edge and outer edge of the blade 32 under the action of gravity and centrifugal force, and fall into the chamber 22 from the upper part near the inner teeth 11. The gradually tilting blade 32 makes the material flow smoother and the distribution more uniform.

[0039] Preferably, the projection of the blade 32 matches the fan-shaped opening 54, and there is a space between the trailing edge of the blade 32 and the upper connecting plate 52. Some material can fall directly into the chamber 22 from the trailing edge of the blade 32, and be further subjected to the centrifugal force when the ring die centering plate 53 rotates. The material temporarily stored in the chamber 22 can move to the inner wall of the ring die 1, and be squeezed by the inner teeth 11 and the outer teeth 21 and squeezed out from the die hole 12 at the lower part of the inner wall, thus ensuring the feeding efficiency and the utilization rate of the die hole 12.

[0040] It is worth noting that the mounting part 31 of the material distribution plate 3 is fixedly connected to the upper connecting plate 52 by bolts. The rear edge of the blade 32 slopes downward from the center of the ring die 1 to the outside. Moreover, the lowest point can be set to extend to the middle and upper part of the inner tooth 11 according to actual needs. For some materials with poor flowability, this setting can further improve the flow efficiency of materials while ensuring the utilization rate of the die hole 12.

[0041] This embodiment also includes a feed hopper 6, the upper opening of which extends above the pressure roller 2. The lower periphery of the feed hopper 6 is connected to the upper periphery of the ring die 1, forming a confined feeding environment above the distribution plate 3 to prevent material overflow. It is worth noting that during the operation of the granulator, the material is continuously and evenly added from above the distribution plate 3. Therefore, the connection between the mounting part 31 of the distribution plate 3 and the upper connecting plate 52 should be kept flat so that the material can fall from the rear edge of the upper connecting plate 52 onto the upper surface of the blade 32 during the rotation of the upper connecting plate 52.

[0042] In addition, the die holes 12 are located at the top of the inner teeth 11 and at the bottom of the tooth groove between two adjacent inner teeth 11, and are evenly distributed along the length of the inner teeth 11.

[0043] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A material guiding structure for an extrusion gear granulator, characterized in that, include: A ring die, wherein the inner sidewall of the ring die is provided with internal teeth and a die hole is provided radially; The pressure roller has external teeth on its outer side wall that match the internal teeth. Multiple pressure rollers are arranged in a circumferential array inside the ring mold and mesh with the ring mold. The space between two adjacent pressure rollers forms a cavity. The material distribution plate is inclined downward from the center of the ring mold to the upper part of the cavity, and the outer edge of the material distribution plate is disposed near the upper part of the internal teeth.

2. The material guiding structure of the extrusion gear granulator according to claim 1, characterized in that, It also includes a rotating shaft and a bracket. The rotating shaft is coaxially arranged with the ring die, and the bracket is located at the upper end of the rotating shaft and is rotatably connected to the pressure roller.

3. The material guiding structure of the extrusion gear granulator according to claim 2, characterized in that, The support includes a throwing plate and an upper connecting plate. The throwing plate is located below the ring die and is rotatably connected to the lower end of the pressure roller. The upper connecting plate is located above the ring die and is rotatably connected to the upper end of the pressure roller.

4. The material guiding structure of the extrusion gear granulator according to claim 3, characterized in that, The support also includes a ring die centering plate, which is disposed on the upper surface of the throwing disc and is coaxially arranged with the ring die. The periphery of the ring die centering plate is slidably connected to the inner sidewall of the ring die.

5. The material guiding structure of the extrusion gear granulator according to claim 3, characterized in that, The upper connecting plate is configured as a fan-shaped structure to form a fan-shaped opening above the chamber. The material distribution plate is located inside the fan-shaped opening and is fixedly connected to the upper connecting plate.

6. The material guiding structure of the extrusion gear granulator according to claim 5, characterized in that, The material distribution plate includes a mounting part and a blade. The mounting part is located at the leading edge of the blade and is connected to the trailing edge of the upper connecting plate.

7. The material guiding structure of the extrusion gear granulator according to claim 6, characterized in that, The blade gradually slopes downward from the leading edge to the trailing edge, and from the inner edge to the outer edge. The outer edge of the blade extends to the upper part of the inner teeth, and there is a gap between the blade and the inner teeth.

8. The material guiding structure of an extrusion gear granulator according to claim 7, characterized in that, The projection of the blade matches the fan-shaped opening, and there is a space between the trailing edge of the blade and the upper connecting plate.

9. The material guiding structure of an extrusion gear granulator according to claim 1, characterized in that, It also includes a feed hopper, the upper opening of which extends above the pressure roller, and the lower periphery of the feed hopper is connected to the upper periphery of the ring die.

10. The material guiding structure of an extrusion gear granulator according to claim 1, characterized in that, The die hole is located at the top of the inner tooth and at the bottom of the tooth groove between two adjacent inner teeth.

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