Disc dryer for dehydrating natural graphite filter cake and composite rake arm structure thereof
By adopting a composite rake arm structure in the disc dryer, including floating pressing teeth cylinder and limiter, the problem of plate clamping and agglomeration during the drying of natural graphite filter cake is solved, and more thorough and uniform drying is achieved, avoiding the Secondary drying and product agglomeration have been improved.
Patent Information
- Application Number
- CN202421143132.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2024-12-31
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Natural graphite filter cakes are prone to plate bonding and clumping during drying in the disc dryer, resulting in uneven drying and high moisture content, which requires secondary drying, affecting subsequent screening operations.
A composite rake arm structure is designed, including rotating spindle, rake arm one and rake arm two. A floating pressing tooth barrel is installed on the rake arm two, which is connected by a spring and a limiter to ensure that the tooth barrel encounters large pieces of material. Floating to avoid blocking of materials and contact with the drying disc to achieve rolling and crushing of materials.
It effectively solves the problems of material plate clamping and agglomeration, achieves more thorough and even drying, avoids secondary drying, reduces the risk of product clumping, and improves production efficiency.
Smart Images
Figure CN222279158U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drying equipment, in particular to a disc dryer for dehydrating natural graphite filter cakes and a composite rake arm structure thereof. Background Art
[0002] The disc dryer is a drying equipment that has multiple layers of fixed hollow heated circular drying discs, and rotating rakes repeatedly stir the loose materials to achieve continuous drying. The heat-carrying fluid continuously heats each layer of the discs by heat conduction to evaporate the materials on the discs, and the water vapor is discharged through the vents at the top of the drying equipment, and the dehydrated dried materials are continuously and evenly discharged from the bottom of the equipment.
[0003] In natural graphite concentrators, some natural graphite concentrates have adopted more efficient vertical filter presses for foam dehydration of natural graphite powder. The dehydration efficiency is extremely high, and the material is often produced in large dense plate form with low moisture content. When this form of material is dried by a disc dryer, due to the insufficient intensity of traditional rake loosening and stirring, the products dried by the disc dryer still have the phenomenon of compaction and agglomeration, and the comprehensive moisture content is high, so secondary drying is often required. The agglomeration of the product affects the subsequent screening operation, which causes certain problems in actual production and use. Utility Model Content
[0004] The utility model aims to provide a disc dryer for dehydrating natural graphite filter cake and its composite rake arm structure, which solves the problems of material compaction and agglomeration of natural graphite dehydrated filter cake in the drying process of the disc dryer, and makes the drying more thorough and uniform.
[0005] The above purpose is achieved through the following technical solutions:
[0006] The utility model provides a composite rake arm structure, comprising: a rotating main shaft, a rake arm 1 and a rake arm 2 are installed on the rotating main shaft, a connecting rake blade is fixedly connected to the rake arm 1; the rake arm 2 is movably connected to a floating material pressing gear cylinder through a spring 1, the floating material pressing gear cylinder is installed on a bearing on the gear cylinder main shaft, limiters are provided on both sides of the bearing in the axial direction, and a spring 2 is provided between the limiter and the bearing.
[0007] Furthermore, the connecting rake blades and the floating pressing gear cylinder are in contact with the drying disc respectively.
[0008] The utility model also provides a disc dryer for dehydrating natural graphite filter cakes, comprising a composite rake arm structure, wherein the composite rake arm structure is the composite rake arm structure mentioned above.
[0009] Beneficial effects of the utility model:
[0010] The utility model solves the problems of material compaction and agglomeration of natural graphite dehydrated filter cake in the drying process of the disc dryer, making the drying more thorough and uniform. A floating material pressing gear cylinder is installed on the second rake arm to fully crush the material. Springs are arranged on the upper and lower sides of the gear cylinder main shaft bearing. When encountering large and dense materials, the gear cylinder will float upward along the vertical direction of the limiter to avoid blocking the material and even excessive pressure on the fixed disc causing the disc surface to be distorted. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Attached Figure 1 The utility model is a schematic diagram of the installation of the composite rake arm structure on the disc dryer.
[0012] Attached Figure 2 It is a structural schematic diagram of a rake arm and its components of the utility model.
[0013] Attached Figure 3 It is a structural schematic diagram of the rake arm 2 and its components of the utility model.
[0014] Attached Figure 4 It is a structural schematic diagram of a floating pressing gear cylinder of the utility model.
[0015] In the attached figure: 1: rake arm 2; 2: floating pressing gear cylinder; 3: gear cylinder main shaft; 4: drying disc; 5: outer cylinder of disc dryer; 6: rotating main shaft; 7: connecting rake leaves; 8: rake arm 1; 9: spring 1; 10: limiter; 11: bearing. DETAILED DESCRIPTION
[0016] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] The utility model provides a composite rake arm structure, as shown in the attached Figure 2-4 As shown, its composition includes: a rake arm 1 8 and a connecting rake blade 7 fixedly mounted thereon; a rake arm 2 1 and a floating press gear cylinder 2 mounted thereon, wherein the floating press gear cylinder 2 is mounted on the shaft of the rake arm 2 1, is movably connected by a spring 1 9, and limits the vertical movement of the bearing 11 within a limited distance by a limiter 10; the rake arm 2 1 is mounted at the front end of the rake arm 1 8 and is installed in the same horizontal direction.
[0018] The rake arm 8 and the connected rake blades installed thereon are used for transporting, stirring and loosening materials;
[0019] The rake arm 21 and the floating pressing gear cylinder installed thereon are used for grinding and crushing the agglomerated materials;
[0020] The rake arm 1 and the rake arm 2 are directly connected to the rotating main shaft of the disk dryer;
[0021] The floating pressing gear cylinder on the rake arm 2 is movably connected to the main shaft of the rake arm 2 through a spring;
[0022] The connecting rake blades and the floating pressing gear cylinder 2 are in contact with the drying disc 4 respectively.
[0023] The utility model also provides a disc dryer for dehydrating natural graphite filter cakes comprising the composite rake arm structure, as shown in the attached Figure 1 As shown, the rake arm 1 8 and the rake arm 2 1 comprised therein have different structures and functions. Both rake arms of different forms are directly connected to the main shaft of the disk dryer and rotate on the fixed disk along with the rotation of the rotating main shaft 6. The rake arm 1 8 is fixedly mounted with a connecting rake blade 7. In the disk dryer actually used, the connecting rake blade 7 includes two forms, namely, material inward pushing and material outward pushing, which are respectively mounted on the large disk layer and the small disk layer.
[0024] A floating pressing gear cylinder 2 is installed on the rake arm 1 to fully crush the material. Springs 2 are arranged on both sides of the bearing 11. When encountering large and dense materials, the floating pressing gear cylinder 2 will float upward along the vertical direction of the limiter to avoid blockage or even excessive pressure on the fixed disc causing the disc surface to twist and deform.
[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. A composite rake arm structure, characterized in that: include: A rotating main shaft (6) is provided with a first rake arm (8) and a second rake arm (1), and the first rake arm (8) is fixedly connected with a connecting rake blade (7); the second rake arm (1) is movably connected to a floating material pressing gear cylinder (2) via a first spring (9); the floating material pressing gear cylinder (2) is installed on a bearing (11) on a gear cylinder main shaft (3); both sides of the bearing (11) in the axial direction are provided with a limiter (10); a second spring is provided between the limiter (10) and the bearing (11).
2. The composite rake arm structure according to claim 1, characterized in that: The connecting rake blades (7) and the floating material pressing gear cylinder (2) are in contact with the drying disc (4) respectively.
3. A disc dryer for dehydrating natural graphite filter cake, comprising a composite rake arm structure, characterized in that: The composite rake arm structure is the composite rake arm structure according to any one of claims 1 to 2.