Composite type externally-covered armor type grinding roller protection device

Abstract

The utility model belongs to the technical field of coal grinding equipment, and particularly relates to a composite externally-covered armored grinding roller protection device which comprises a grinding roller support, a plurality of lining plate assemblies are arranged on the windward side surface of the grinding roller support and used for fixing a protection assembly on the surface, a plurality of wear-resistant ceramic plates cover the surface of the protection assembly, and wear-resistant layers are arranged on the plate surfaces of the wear-resistant ceramic plates. The lining plate assembly comprises a first lining plate and a second lining plate; the two first lining plates are symmetrically arranged on the waist sides, and the two second lining plates are symmetrically arranged at the joints of the top side and the two waist sides; the protection assembly comprises a first protection plate and a second protection plate, first limiting blocks are arranged on the surfaces, facing the windward side, of the first protection plate and the second protection plate, and the first protection plate and the second protection plate are fixed into the limiting grooves corresponding to the first lining plate and the second lining plate through the first limiting blocks correspondingly. The problems that an existing device is complex in installation and poor in protection effect are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal grinding equipment, and in particular relates to a composite armored grinding roller protection device. Background Art

[0002] When the coal mill grinds harder coal, the nozzle ring needs to use hot air to blow the coal powder to the separator. In this process, it is inevitable that the grinding roller assembly will be eroded and worn. Therefore, in order to achieve the best grinding effect of the grinding roller and reduce the possibility of erosion, it is necessary to modify the original grinding roller assembly and install protective devices on the outer wings of the grinding roller assembly.

[0003] At present, the patent with application number 202022521177.X discloses a grinding roller bracket windshield device, including: a working frame, a grinding disc and a static ring plate, the upper surface of the static ring plate is welded to the working frame, and the lower surface of the static ring plate is clamped and connected to the grinding disc, and the working frame and the static ring plate are both rotated with the grinding disc; the working frame includes a fixed frame disc, a connecting frame and a grinding roller frame, the peripheral side of the fixed frame disc is welded to several connecting frames, and the lower surface of the fixed frame disc is welded to several grinding roller frames, and the position and quantity of the grinding roller frame and the connecting frame are adapted to each other.

[0004] Although the current windshield device can provide certain protection for the connecting frame and avoid wear on the connecting frame, this device introduces multiple components to provide outer protection for the grinding roller, and the correct installation position needs to be ensured between the components, which makes the installation complicated. At the same time, due to the simple structure, the protection effect is not good, so there is an urgent need for a composite armored grinding roller protection device. Utility Model Content

[0005] The purpose of the utility model is to provide a composite armored grinding roller protection device which is easy to install and provides multi-layer protection.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A composite armored grinding roller protection device includes: a grinding roller bracket, a plurality of lining plate assemblies provided on the windward side surface of the grinding roller bracket for fixing the protection assembly on the surface, a plurality of wear-resistant ceramic plates covering the surface of the protection assembly, and a wear-resistant layer provided on the surface of the wear-resistant ceramic plates;

[0008] The overall shape of the grinding roller bracket is trapezoidal, with the two waist sides and the top side of the grinding roller bracket forming the windward side;

[0009] The liner assembly includes: two first liner plates and two second liner plates;

[0010] Two first lining panels are symmetrically arranged on the waist sides, and two second lining panels are symmetrically arranged at the seams between the top side and the two waist sides;

[0011] The protective assembly includes a first protective plate and a second protective plate. A first limit block is set on the surface of the first protective plate and the second protective plate facing the windward side, and the first protective plate and the second protective plate are respectively fixed to the limiting grooves corresponding to the first lining plate and the second lining plate through the first limit block.

[0012] Furthermore, a positioning hole is provided in the center of the wear-resistant ceramic plate, and the wear-resistant ceramic plate is welded to the surface of the protective component through the positioning hole through the iron sheet.

[0013] Furthermore, the anti-wear layer is fixed to the plate surface of the wear-resistant ceramic plate through a connector connected at the side.

[0014] Furthermore, a plurality of anti-wear welds are provided on the outer surface of the anti-wear layer.

[0015] Furthermore, a second limiting block is provided on the surface of the second lining plate facing the windward side, and the second limiting block is accommodated in the bracket groove provided in the grinding roller bracket to fix the second lining plate.

[0016] Furthermore, the first protective plate is fixed to the surface of the grinding roller bracket through bolt holes arranged on the surface.

[0017] Furthermore, the number of the first protective plates is 500 pieces, and the number of the second protective plates is 500 pieces.

[0018] Furthermore, wear-resistant granular rubber is provided on the outer surface of the wear-resistant ceramic plate.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The utility model protects the grinding roller by covering the windward side of the grinding roller bracket with a protective device. Specifically, first, a lining assembly is set on the windward side surface to serve as a bracket of the protective assembly. Secondly, after the protective assembly is fixed to the lining assembly as the first layer of protection, its outer surface is covered with a wear-resistant ceramic plate as the second layer of protection. Finally, an anti-wear layer is set on the outer surface of the wear-resistant ceramic plate as the third layer of protection. Because these three layers rely on the grinding roller bracket as the installation reference surface, it is only necessary to select the structure corresponding to the bracket for installation, which reduces the complexity of installation. At the same time, because three layers are set as protective layers, the protective effect of the grinding roller assembly is improved and the service life of the protective device is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an exploded perspective view of the utility model;

[0022] Figure 2 This is an exploded top view of the utility model;

[0023] Figure 3 It is a three-dimensional diagram of the combination of the utility model;

[0024] Figure 4 This is a diagram of the liner and bracket of the utility model;

[0025] Figure 5 This is a diagram of the grinding roller bracket and liner of the utility model.

[0026] In the figure: 1. Grinding roller bracket; 10. Bracket slot; 11. Windward side; 110. Top side; 111. Waist side; 2. First lining plate; 20. Bolt hole; 21. Limiting slot; 3. Protective assembly; 30. First limiting block; 31. First protective plate; 32. Second protective plate; 4. Wear-resistant ceramic plate; 40. Positioning hole; 5. Anti-wear layer; 50. Anti-wear weld; 51. Connector; 6. Grinding roller; 7. Second lining plate; 71. Second limiting block. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, purpose and efficacy of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without making creative work are all within the scope of protection of the present invention. The experimental methods in the following embodiments are all conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments are all commercially available unless otherwise specified.

[0028] like Figure 1-Figure 5 In this embodiment, it includes: a grinding roller bracket 1, a lining plate assembly is provided on the windward side of the grinding roller assembly 1;

[0029] It should be noted that the grinding roller support 1 is trapezoidal in shape as a whole, with its two waist sides 111 and top side 110 forming the windward side;

[0030] It should be noted that the lining plate assembly includes two first inner lining plates 2 and two second inner lining plates 7, wherein the first inner lining plate 2 is irregular in shape and has a limiting groove 21 on its surface, and the second inner lining plate 7 has a second limiting block 71 on its surface facing the windward side 11 and also has a limiting groove 21 on its surface;

[0031] Specifically, the two first inner lining plates 2 are symmetrically bolted to the surface of the waist side 111 through the bolt holes 20;

[0032] The protective component 3 covers the surface of the lining component;

[0033] It should be noted that the protection assembly 3 includes a first protection plate 31 and a second protection plate 32 , and a first limit block 30 is provided on the surface of the first protection plate 31 and the second protection plate 32 facing the windward side 11 ;

[0034] Specifically, first, the first limiting block 30 of the first protective plate 31 is placed into the limiting groove 21 of the first inner lining plate 2, and then the first limiting block 30 on the second protective plate 32 is placed into the bracket groove 10 set in the second inner lining plate 7, and the two are then connected together. Then, the whole is accommodated in the bracket groove 10 of the grinding roller bracket 1 through its second limiting block 71, and is fixed at the joint between the top side 110 and the two waist sides 111;

[0035] It should be noted that the first protective plate 31 and the second protective plate 32 are adjacent to each other, and when combined, the entire plate completely covers the windward side.

[0036] A plurality of wear-resistant ceramic plates 4 cover the first protective plate 31 and the second protective plate 32;

[0037] It should be noted that a circular positioning hole (40) is provided at the center of the wear-resistant ceramic plate 4;

[0038] Specifically, the purpose of the positioning hole 40 is to weld the wear-resistant ceramic plate 4 to the inside thereof through the iron sheet to complete the preliminary fixing of the positioning hole 40 to the surface of the first protective plate 31 and the second protective plate 32. Secondly, the surface of the wear-resistant ceramic plate 4 and the gap between the wear-resistant ceramic plate 4 and the windward side surface are filled with wear-resistant granular glue to prevent iron slag, gangue and other particles from filling into the groove and causing the liner to be loosely engaged.

[0039] The surface of the wear-resistant ceramic plate 4 is provided with a wear-resistant layer 5;

[0040] Specifically, the anti-wear layer 5 can cover the other parts due to the connecting piece 51 provided on its side, and the connecting piece 51 is fixed to the grinding roller assembly 1 by welding;

[0041] It should be noted that the outer surface of the anti-wear layer 5 is provided with an anti-wear weld 50 , which improves the anti-wear effect of the outer layer.

[0042] In this embodiment, the number of the first protective plates 31 is 4, and the number of the second protective plates 32 is 2;

[0043] It should be noted that two first protective plates 31 are fixed to the waist side 111;

[0044] In this embodiment, the first inner lining plate 2 and the second inner lining plate 7 are 10 mm thick and are made of carbon steel.

[0045] In this embodiment, the first protective plate 31 and the second protective plate 32 are made of chromium-manganese alloy, which has excellent wear resistance and corrosion resistance.

[0046] In this embodiment, the anti-wear weld 50 is a high-Cr tungsten carbide wear-resistant welding rod.

[0047] In this embodiment, the overall thickness of the device is not less than 70 mm.

[0048] Working principle:

[0049] The working principle of the protective device is based on its multi-layer structure design, which is mainly to effectively prevent the hot air blown out of the nozzle ring from directly damaging the grinding roller.

[0050] First, the liner assembly plays a supporting and positioning role. It consists of a first inner liner and a second inner liner, which are fixed to the waist of the grinding roller support through bolt holes and limit slots. These liner plates provide the basic structure of the protective assembly, ensuring that it is firmly fixed to the grinding roller support.

[0051] The guard assembly is a key component of the system, consisting of a first guard plate and a second guard plate, the surfaces of which face toward the nozzle ring. They mate with retaining grooves in the liner assembly and are secured in place by fixing bolts. This design not only protects the roller support but also leaves space between the guard plates to accommodate subsequent protective layers.

[0052] Wear-resistant ceramic plates form the third layer of protection, covering the surfaces of the first and second protective plates. These wear-resistant ceramic plates effectively prevent erosion and abrasion from the hot airflow and solid particles from the nozzle ring. To enhance their stability and durability, the edges of the wear-resistant ceramic plates are welded to the grinding roller bracket, ensuring a secure fit and preventing them from falling off.

[0053] The surface of the wear-resistant ceramic plate is designed with an anti-wear layer. This specially designed surface structure can further reduce friction and wear, extending the service life of the entire protective device. The anti-wear layer structure also includes anti-wear welds, which are designed to further reduce contact with the grinding roller surface, thereby maximizing protection of the grinding roller from external factors.

[0054] In summary, this multi-layer protective device not only covers and protects the grinding roller 6, but also effectively protects the grinding roller bracket and the grinding roller 6 from damage by the external environment through carefully designed layers of protection, thereby extending the service life of the equipment and reducing maintenance costs. It is particularly suitable for industrial production environments that require long-term and efficient operation.

[0055] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite armored grinding roller protection device, comprising: A grinding roller support (1) is characterized in that: a plurality of lining plate assemblies are provided on the surface of the windward side (11) of the grinding roller support (1) for fixing a protective assembly (3) on the surface; the surface of the protective assembly (3) is covered with a plurality of wear-resistant ceramic plates (4); and the plate surface of the wear-resistant ceramic plates (4) is provided with a wear-resistant layer (5); The grinding roller support (1) is in a trapezoidal shape as a whole, and the two waist sides (111) and the top side (110) of the grinding roller support (1) form a windward side (11); The lining plate assembly comprises: two first lining plates (2) and two second lining plates (7); Two of the first lining panels (2) are symmetrically arranged on the waist side (111), and two of the second lining panels (7) are symmetrically arranged at the seams between the top side (110) and the two waist sides (111); The protective assembly (3) comprises a first protective plate (31) and a second protective plate (32); a first limiting block (30) is provided on the surface of the first protective plate (31) and the second protective plate (32) facing the windward side (11); and the first limiting block (30) fixes the first protective plate (31) and the second protective plate (32) to the inside of the limiting grooves (21) corresponding to the first lining plate (2) and the second lining plate (7), respectively.

2. The composite armored grinding roller protection device according to claim 1 is characterized in that: A positioning hole (40) is provided at the center of the wear-resistant ceramic plate (4), and the positioning hole (40) is used to weld the wear-resistant ceramic plate (4) to the surface of the protective component (3) through an iron sheet.

3. The composite armored grinding roller protection device according to claim 1 is characterized in that: The anti-wear layer (5) is fixed to the plate surface of the wear-resistant ceramic plate (4) via a connector (51) connected at the side.

4. The composite armored grinding roller protection device according to claim 3 is characterized in that: A plurality of anti-wear welds (50) are provided on the outer surface of the anti-wear layer (5).

5. The composite armored grinding roller protection device according to claim 1 is characterized in that: A second limiting block (71) is provided on the surface of the second lining plate (7) facing the windward side (11), and the second limiting block (71) is accommodated in a bracket groove (10) provided on the grinding roller bracket (1) to fix the second lining plate (7).

6. The composite armored grinding roller protection device according to claim 1, characterized in that: The first protection plate (31) is fixed to the surface of the grinding roller bracket (1) through bolt holes (20) provided on the surface.

7. The composite armored grinding roller protection device according to claim 6, characterized in that: The number of the first protective plates (31) is four, and the number of the second protective plates (32) is two.

8. The composite armored grinding roller protection device according to claim 3 is characterized in that: The outer surface of the wear-resistant ceramic plate (4) is provided with wear-resistant granular rubber.

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