Flow guide protection device for wear-resistant side body and bowl-type medium-speed coal mill

Abstract

The utility model provides a flow guide protection device for a wear-resistant side body and a bowl-type medium-speed coal mill. The flow guide protection device comprises a flow guide protection main plate, the diversion protection main plate is an integral frame composed of an upper plate body, a middle wear-resisting plate, a lower wear-resisting plate, a left wear-resisting plate and a right wear-resisting plate. A plurality of rib plates which are longitudinally arranged at intervals and wear-resisting rings which are transversely arranged among the rib plates are correspondingly arranged on the outer surface side formed by the upper plate body, the middle wear-resisting plate and the lower wear-resisting plate; the upper plate body and the wear-resisting plates are combined to form an integral frame of the flow guide protection main plate, and the rib plates which are longitudinally arranged at intervals are arranged on the outer surface of the flow guide protection main plate, so that fluid can be effectively guided, impact and abrasion of the fluid to the surface of the device are reduced, the integral strength of the device is further enhanced, and the service life of the device is prolonged. And the wear-resistant rings are connected between the rib plates, so that the transverse structural strength and the overall wear-resistant performance of the main plate can be remarkably enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mills, in particular to a flow guide protection device for a wear-resistant side body and a bowl-type medium-speed coal mill. Background Art

[0002] Existing coal mills usually have a corresponding flow guide protection device installed in the separator body, which is mainly used to protect the inside of the coal mill from being worn by coal powder and airflow during operation, so as to extend the service life of the equipment. However, the current flow guide protection design still has many deficiencies and shortcomings in structure and performance. In particular, the main board of the existing flow guide protection has a relatively complex overall structure and is relatively weak in installation strength and stability, which not only affects the support and stability of the structure, but also is not conducive to disassembly and maintenance. In addition, the main board of the flow guide protection lacks lateral structural support and additional wear-resistant protection, resulting in worse overall strength and wear resistance of the main board, which is difficult to meet the working requirements of the medium-speed coal mill. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a flow guide protection device for a wear-resistant side body and a bowl-type medium-speed coal mill to solve the above problems.

[0004] The utility model adopts the following scheme:

[0005] The present application provides a flow-guiding protection device for a wear-resistant side body, including a flow-guiding protection main board; the flow-guiding protection main board is composed of an upper plate body, a middle wear-resistant plate, a lower wear-resistant plate, and a left wear-resistant plate and a right wear-resistant plate to form an integral frame; a plurality of longitudinally arranged and mutually spaced ribs and wear-resistant rings placed horizontally between the ribs are correspondingly provided on the outer surface side constructed by the upper plate body, the middle wear-resistant plate and the lower wear-resistant plate.

[0006] As a further improvement, the lower wear-resistant plate is relatively vertically arranged, the upper plate body and the middle wear-resistant plate are V-shaped butt-jointed along the inner side, and the middle wear-resistant plate and the lower wear-resistant plate are smoothly connected together through a wear-resistant ring.

[0007] As a further improvement, the ribs extend outwards to be aligned smoothly with the end of the upper plate body, and the protrusions are provided on the end faces of the middle wear-resistant plate, the lower wear-resistant plate, and the wear-resistant ring.

[0008] As a further improvement, the wear-resistant ring has a preset width dimension, which is between 1 / 3 and 1 / 2 of the width dimension of the lower wear-resistant plate.

[0009] As a further improvement, the wear-resistant ring and the rib plate are integrally formed.

[0010] As a further improvement, the upper plate, the middle wear-resistant plate, and the lower wear-resistant plate are extended in an arc shape in the transverse direction.

[0011] As a further improvement, the left wear-resistant plate and the right wear-resistant plate are correspondingly sealed on the side surfaces formed by the upper plate body, the middle wear-resistant plate, and the lower wear-resistant plate.

[0012] As a further improvement, each wear-resistant plate is a metal composite steel plate, and the plates are welded to each other.

[0013] The present application further provides a bowl-type medium-speed coal mill, comprising a machine body provided with wear-resistant side bodies, and the above-mentioned flow guide protection device configured on the machine body and applicable to the wear-resistant side bodies.

[0014] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0015] The flow-guiding protection device for the wear-resistant side body of the present application forms an overall frame of the flow-guiding protection main board by combining an upper plate body and multiple wear-resistant plates. A plurality of longitudinally arranged and mutually spaced ribs are arranged on the outer surface of the flow-guiding protection main board, which can not only effectively guide the fluid, thereby reducing the impact and wear of the fluid on the surface of the device, but also further enhance the overall strength of the device, improve its durability, and extend the service life of the product. It is particularly suitable for the application scenario of the bowl-type medium-speed coal mill. In particular, wear-resistant rings are connected between each rib plate, which can significantly enhance the lateral structural strength of the main board, ensure that the device can still maintain a stable structure in a complex environment, is not easy to deform, and the wear-resistant rings can further enhance the overall wear resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a flow guide protection device for a wear-resistant side body according to an embodiment of the present utility model;

[0017] Figure 2 2 is a schematic structural diagram of the flow guide protection device for the wear-resistant side body of an embodiment of the utility model from other perspectives;

[0018] Figure 3 It is a partial structural schematic diagram of the flow guide protection device for the wear-resistant side body of an embodiment of the utility model.

[0019] Icons: 1- flow diversion protection main board; 11- upper plate; 12- middle wear-resistant plate; 13- lower wear-resistant plate; 14- left wear-resistant plate; 15- right wear-resistant plate; 16- rib plate; 17- wear-resistant ring. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the present invention.

[0021] Example

[0022] Combine Figures 1 to 3 This embodiment provides a flow diversion and protection device for a wear-resistant side body, comprising a flow diversion and protection main plate 1. The flow diversion and protection main plate 1 is composed of an upper plate 11, a middle wear-resistant plate 12, a lower wear-resistant plate 13, and left and right wear-resistant plates 14 and 15, forming an integral frame. Multiple longitudinally spaced ribs 16 are disposed on the outer surfaces of the upper plate 11, the middle wear-resistant plate 12, and the lower wear-resistant plate 13, as well as wear-resistant rings 17 disposed transversely between the ribs 16.

[0023] The above-mentioned flow diversion protection device forms an overall frame of the flow diversion protection main board 1 by combining the upper plate body 11 and multiple wear-resistant plates. A plurality of longitudinally arranged and mutually spaced ribs 16 are arranged on the outer surface of the flow diversion protection main board 1, which can not only effectively guide the fluid, thereby reducing the impact and wear of the fluid on the surface of the device, but also further enhance the overall strength of the device, improve its durability, and extend the service life of the product. It is particularly suitable for application scenarios of bowl-type medium-speed coal mills.

[0024] In particular, wear-resistant rings 17 are connected between each rib 16, which can significantly enhance the lateral structural strength of the main board, ensuring that the device can maintain a stable structure in a complex environment and is not easily deformed. The wear-resistant rings 17 can further enhance the overall wear resistance.

[0025] It should be noted that the guide guard is used to protect the wear-resistant side body of the coal mill from being worn or even worn through by coal powder. The detachable guide guard is more convenient for separate replacement and maintenance after wear.

[0026] In this embodiment, the lower wear-resistant plate 13 is relatively vertically arranged, the upper plate body 11 and the middle wear-resistant plate 12 are butted together in a V-shape along the inner side, and the middle wear-resistant plate 12 and the lower wear-resistant plate 13 are smoothly connected together through the wear-resistant ring 17. Specifically, the wear-resistant ring 17 is welded and attached to the abutment of the middle wear-resistant plate 12 and the lower wear-resistant plate 13, and the wear-resistant ring 17 is respectively welded and fixed to the two wear-resistant plates. Thus, the upper plate body 11 and the middle wear-resistant plate are butted together in a V-shape along the inner side, ensuring the stability of the internal structure. The middle wear-resistant plate and the lower wear-resistant plate 13 are smoothly connected together through the wear-resistant ring 17, which not only effectively improves the wear resistance of the overall structure, but also reduces the impact of wear on the connection, thereby extending the service life of the equipment and improving the operating efficiency of the equipment.

[0027] Furthermore, the ribs 16 extend outward to align smoothly with the ends of the upper plate 11, and protrusions are provided on the end faces of the intermediate wear-resistant plate 12, the lower wear-resistant plate 13, and the wear-resistant ring 17. The outward extension of the ribs 16 and their smooth alignment with the ends of the upper plate 11 ensure the structural integrity and stability. The protrusions provided on the end faces of the intermediate wear-resistant plate 12, the lower wear-resistant plate 13, and the wear-resistant ring 17 not only enhance the strength of the joints but also effectively improve wear resistance, further reducing the impact of wear on key areas, thereby increasing the service life and reliability of the entire device.

[0028] Preferably, the wear-resistant ring 17 has a preset width, which is between 1 / 3 and 1 / 2 of the width of the lower wear-resistant plate 13. Setting this preset width between 1 / 3 and 1 / 2 of the width of the lower wear-resistant plate 13 ensures the strength of the wear-resistant ring 17 while rationally controlling the amount of material used, thereby enhancing the wear resistance and stability of the overall structure and further improving the service life and performance of the equipment.

[0029] In this embodiment, the wear-resistant ring 17 and the rib plate 16 are integrally formed, thereby reducing the problem of connection point weakening in traditional splicing methods, thereby improving the strength and stability of the overall structure.

[0030] In this embodiment, the upper plate 11, middle wear plate 12, and lower wear plate 13 extend laterally in an arc shape. This effectively optimizes the guidance of airflow and coal dust, reduces local impact and wear, and the arc-shaped structure not only improves the strength and durability of the wear plates, but also enhances the stability and efficiency of the equipment during operation.

[0031] In this embodiment, the left wear-resistant plate 14 and the right wear-resistant plate 15 are respectively sealed on the side surfaces formed by the upper plate 11, the middle wear-resistant plate 12, and the lower wear-resistant plate 13. Thus, a complete closed structure is formed, which not only effectively improves the side protection capability and prevents the erosion and wear of the side structures by coal dust, but also enhances the sealing and durability of the entire device, further improving the stability and service life of the equipment.

[0032] In this embodiment, each wear-resistant plate is a metal-clad steel plate, and the plates are welded together. High-chromium cast iron linings are eliminated in this case, and metal-clad steel plates, preferably bimetallic composite steel plates, are formed by overlaying with wear-resistant welding wire. These plates offer high wear resistance, impact resistance, and excellent oxidation resistance, with a hardness of HRC57-60. They are ideal for use on easily worn parts within coal mills, significantly improving production efficiency and on-site installation efficiency.

[0033] Furthermore, this embodiment provides a bowl-type medium-speed coal mill, comprising a machine body (not shown) provided with wear-resistant side members, and the aforementioned flow guide and protection device disposed on the machine body and adapted for use with the wear-resistant side members. The flow guide and protection device is further installed in the separator body to protect the wear-resistant side members. This is a conventional design, and details of which may be found in the applicant's prior application, and therefore will not be elaborated upon here.

[0034] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention fall within the protection scope of the present invention.

Claims

1. A flow guide protection device for a wear-resistant side body, characterized in that: It includes a guide and protection main board; the guide and protection main board is composed of an upper plate body, a middle wear-resistant plate, a lower wear-resistant plate, a left wear-resistant plate and a right wear-resistant plate to form an integral frame; Wherein, a plurality of longitudinally arranged and mutually spaced ribs and wear-resistant rings horizontally arranged between the ribs are correspondingly provided on the outer surface sides constructed by the upper plate body, the middle wear-resistant plate and the lower wear-resistant plate.

2. The flow guide protection device for the wear-resistant side body according to claim 1, characterized in that: The lower wear-resistant plate is relatively vertically arranged, the upper plate body and the middle wear-resistant plate are butted in a V shape along the inner side, and the middle wear-resistant plate and the lower wear-resistant plate are smoothly connected together through a wear-resistant ring.

3. The flow guide protection device for the wear-resistant side body according to claim 2, characterized in that: The ribs extend outwards to be aligned smoothly with the end of the upper plate body, and the protrusions are arranged on the end faces of the middle wear-resistant plate, the lower wear-resistant plate and the wear-resistant ring.

4. The flow guide protection device for the wear-resistant side body according to claim 3, characterized in that: The wear-resistant ring has a preset width dimension, which is between 1 / 3 and 1 / 2 of the width dimension of the lower wear-resistant plate.

5. The flow guide protection device for the wear-resistant side body according to claim 3, characterized in that: The wear-resistant ring and the rib plate are integrally formed.

6. The flow guide protection device for the wear-resistant side body according to claim 1, characterized in that: The upper plate body, the middle wear-resistant plate and the lower wear-resistant plate are extended in an arc shape in the transverse direction.

7. The flow guide protection device for the wear-resistant side body according to claim 6, characterized in that: The left wear-resistant plate and the right wear-resistant plate are correspondingly sealed on the side surfaces formed by the upper plate body, the middle wear-resistant plate and the lower wear-resistant plate.

8. The flow guide protection device for the wear-resistant side body according to claim 1, characterized in that: Each wear-resistant plate is a metal composite steel plate, and the plates are welded to each other.

9. A bowl-type medium-speed coal mill, characterized in that: The invention comprises a machine body provided with a wear-resistant side body, and a flow guide protection device as claimed in any one of claims 1 to 8, which is arranged on the machine body and is applicable to the wear-resistant side body.

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