Low cost wear resistant ring roller mill roller carrier

Abstract

The utility model relates to a low -cost wear -resisting ring roller mill grinding wheel frame, including the wheel frame main part, the wheel frame main part includes at least two wheel frame boards of axial interval arrangement, and the circumference side between each wheel frame board is connected with a plurality of pin shafts along the circumferential direction interval arrangement, and each pin axle and between the adjacent two wheel frame boards respectively rotate sleeve joint has the grinding wheel, wheel frame board and each grinding wheel axle end contact's part respectively embeds and is provided with wear -resistant insert piece. When wear -resistant insert piece wears, need not to replace whole wheel frame, only need to replace the wearing component, greatly saved the use cost.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to a low-cost, wear-resistant ring roller mill grinding wheel frame. Background Technology

[0002] During operation, the grinding wheels of a ring roller mill rotate at high speed, continuously rubbing and impacting components such as the wheel frame and pins, causing these contact points to gradually wear down. Once the wear reaches a certain level, the entire equipment can no longer function properly and must be replaced. Because traditional grinding wheel frames are mostly integral structures, even if only local wear occurs, the entire frame must be scrapped, resulting in high replacement costs and resource waste.

[0003] One common improvement method is to manufacture the grinding wheel frame entirely from wear-resistant materials to extend its service life. However, this method still has significant drawbacks: first, wear-resistant materials are expensive and difficult to process, leading to increased overall manufacturing costs; second, even if only some parts are worn, the entire structure cannot be used, making local repair or replacement impossible, resulting in poor economic efficiency.

[0004] Therefore, it is necessary to provide a ring roller mill grinding wheel frame with a reasonable structure, easy partial replacement, low overall cost, and excellent wear resistance, in order to solve the problems of high overall replacement cost and low material utilization rate in the existing technology. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a low-cost, wear-resistant ring roller mill grinding wheel frame.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A low-cost, wear-resistant ring roller mill grinding wheel frame includes a wheel frame body, which includes at least two axially spaced wheel frame plates. Multiple pins spaced along the circumferential direction are connected between the periphery of each wheel frame plate. Grinding wheels are rotatably sleeved on each pin and between two adjacent wheel frame plates. Wear-resistant inserts are embedded in the parts of the wheel frame plates that contact the shaft ends of each grinding wheel.

[0007] Furthermore, the pin shaft is fixedly connected to the corresponding pin hole of each wheel frame plate by a wear-resistant positioning sleeve.

[0008] Furthermore, the wear-resistant inserts on the same end face of the wheel frame plate form a ring-shaped integral structure; or each wear-resistant insert is an independent segmented structure.

[0009] Furthermore, the wheel frame plate is made of carbon steel.

[0010] Furthermore, the wear-resistant insert is fixed to the wheel frame plate by bolting or riveting.

[0011] By adopting the above technical solution, the beneficial effects of this utility model are as follows: Localized reinforcement is applied to the most severely worn critical areas (the contact point between the wheel frame plate and the grinding wheel, and the pin holes). Replaceable and wear-resistant inserts and locating sleeves significantly extend the overall service life of the grinding wheel frame. The wheel frame plate itself is made of ordinary carbon steel, replacing expensive integral wear-resistant materials and substantially reducing manufacturing costs. When the wear-resistant inserts or locating sleeves wear out, it is not necessary to replace the entire wheel frame or wheel frame plate; only the wear-resistant inserts or locating sleeves need to be replaced, resulting in low maintenance costs. Attached Figure Description

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1 This is a schematic diagram of the structure of the ring roller mill grinding wheel frame of this utility model; Figure 2 This is a partial cross-sectional schematic diagram of the ring roller mill grinding wheel frame of this utility model; Figure 3 This is a schematic diagram of the intermediate wheel frame plate. Detailed Implementation

[0013] This invention provides a low-cost, wear-resistant ring roller mill grinding wheel frame. Its core design concept is to set replaceable wear-resistant parts in key parts that bear the direct impact and friction of the grinding wheel, thereby significantly improving the service life of the entire grinding wheel frame at extremely low cost and greatly reducing the cost of use.

[0014] Please see Figure 1-3 In a preferred embodiment of this utility model, the grinding wheel frame includes a wheel frame body. The wheel frame body is composed of three wheel frame plates 1 arranged axially spaced apart, namely an upper wheel frame plate, a middle wheel frame plate, and a lower wheel frame plate. The circumferences of each wheel frame plate 1 are connected and fixed by a plurality of pins 2 arranged at equal intervals along the circumferential direction. A grinding wheel 3 is rotatably sleeved on each pin 2 and between two adjacent wheel frame plates 1 (i.e., between the upper wheel frame plate and the middle wheel frame plate, and between the middle wheel frame plate and the lower wheel frame plate). Thus, for the configuration of three wheel frame plates, a total of two grinding wheels 3 are installed on each pin 2.

[0015] The key improvement of this utility model lies in the fact that a wear-resistant insert 4 is embedded at each contact point between the wheel frame plate 1 and the shaft end face of the grinding wheel 3. The wear-resistant insert 4 is made of a material with higher wear resistance than the wheel frame plate 1 itself (such as high-chromium cast iron, wear-resistant alloy steel, etc.). Its specific arrangement varies depending on the position of the wheel frame plate. For the middle wheel frame plate 1, since both its upper and lower end faces need to contact the grinding wheel 3 and bear wear, wear-resistant inserts 4 are embedded on both its upper and lower end faces (i.e., double-sided embedding).

[0016] For the wheel frame plates 1 at the upper and lower ends, since only one inner end face of each plate contacts the grinding wheel 3, wear-resistant inserts 4 are only embedded on the inner end face (i.e., embedded on one side).

[0017] As another important improvement of this utility model, a wear-resistant positioning sleeve 5 is provided between the pin shaft 2 and the corresponding pin hole of the wheel frame plate 1. The wear-resistant positioning sleeve 5 is fixedly sleeved on the pin shaft 2 and press-fitted into the corresponding pin hole of the wheel frame plate 1. When the wear-resistant positioning sleeve 5 is worn, it can be replaced, and the pin shaft 2 and the wheel frame body can continue to be used.

[0018] In one specific implementation, the wheel frame plate 1 is made of ordinary carbon steel, which greatly reduces the cost of raw materials and the difficulty of machining compared to using wear-resistant materials for the whole.

[0019] Regarding the fixing method of the wear-resistant insert 4, riveting is used in this embodiment. Of course, reliable mechanical connection methods such as bolt fastening can also be used. These fixing methods are simple in process, low in cost, and easy to remove and replace after the wear-resistant insert 4 is worn.

[0020] Regarding the structural form of the wear-resistant insert 4, there are two possible implementation methods: one is as shown in the attached diagram. Figure 3 As shown, in this embodiment, the wear-resistant inserts 4 on the same end face of each wheel frame plate 1 form an integral ring-shaped structure. This structure has better overall integrity and a flatter working surface after installation. Secondly, each wear-resistant insert 4 on each wheel frame plate 1 can also be an independent piece structure, which facilitates replacement when a single piece is damaged and reduces manufacturing difficulty.

[0021] It should be noted that the number of wheel frame plates in this utility model is not limited to three as in this embodiment. When there are two wheel frame plates 1, a grinding wheel 3 is installed on each pin 2, and both wheel frame plates are fitted with wear-resistant inserts 4 on one side. When there are more than three wheel frame plates 1, the concept of this embodiment can be extrapolated.

[0022] The working principle of this invention is as follows: When the grinding wheel frame is working, the grinding wheel 3 rotates at high speed. The shaft end face of the grinding wheel 3 experiences intense friction and impact with the wear-resistant insert 4 on the wheel frame plate 1. The gravity and impact force are transmitted to the wheel frame body through the pin 2 and the wear-resistant positioning sleeve 5. Because the wear is concentrated on the replaceable wear-resistant insert 4 and the wear-resistant positioning sleeve 5, the main structural components such as the wheel frame plate 1 and the pin 2 are protected. When the wear-resistant insert 4 or the wear-resistant positioning sleeve 5 wears to its limit, it only needs to be replaced, without scrapping the entire wheel frame.

[0023] The specific embodiments of this utility model have been described above. However, those skilled in the art should understand that this is only an example. Those skilled in the art can make various changes or modifications to this embodiment without departing from the principle and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A low-cost, wear-resistant ring roller mill grinding wheel frame, comprising a wheel frame body, the wheel frame body including at least two axially spaced wheel frame plates, a plurality of pins spaced circumferentially between the periphery of each wheel frame plate, and a grinding wheel rotatably sleeved on each pin between adjacent wheel frame plates; characterized in that: Wear-resistant inserts are embedded in the parts of the wheel frame plate that contact the shaft ends of each grinding wheel.

2. The low-cost, wear-resistant ring roller mill grinding wheel frame according to claim 1, characterized in that: The pin shaft is fixedly connected to the corresponding pin hole of each wheel frame plate by a wear-resistant positioning sleeve.

3. The low-cost, wear-resistant ring roller mill grinding wheel frame according to claim 1, characterized in that: The wear-resistant inserts on the same end face of the wheel frame plate form a ring-shaped integral structure; or each wear-resistant insert is an independent segmented structure.

4. The low-cost, wear-resistant ring roller mill grinding wheel frame according to claim 1, characterized in that: The wheel frame plate is made of carbon steel.

5. The low-cost, wear-resistant ring roller mill grinding wheel frame according to claim 1, characterized in that: The wear-resistant insert is fixed to the wheel frame plate by bolting or riveting.

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