A roll mill feed arrangement that facilitates maintenance

Abstract

This invention discloses a maintenance-friendly roller mill feeding device, belonging to the field of roller mill feeding devices. It includes a feeding regulating valve, which comprises a wear-resistant plate, a lifting plate, an assembly frame, a positioning plate, and a limiting component. The wear-resistant plate has a positioning plate structure and a hook-type hanging rod. A groove is formed between the positioning plate and the wear-resistant plate, allowing the wear-resistant plate to slide onto the assembly frame from one side via a pin. The hanging rod provides sliding limitation, making the process convenient and quick. Disassembly is also simple; the wear-resistant plate can be removed from the assembly frame by dragging it for replacement. The positioning and limiting structures are concentrated on the wear-resistant plate. Combined with the lifting plate on the wear-resistant plate, the wear-resistant plate can be hoisted from the external inspection port for disassembly and replacement. The centralized positioning and limiting structures on the wear-resistant plate facilitate maintenance and replacement, reduce maintenance of the assembly frame, decrease maintenance time, and lower costs.

Description

Technical Field

[0001] This invention belongs to the field of roller mill feeding devices, and particularly relates to a roller mill feeding device that is easy to maintain. Background Technology

[0002] Mining roller mills, also known as roller presses or extrusion mills, are high-efficiency ultrafine crushing and grinding equipment for ores and rocks designed based on the principle of material layer crushing. They are widely used in industries such as metal mining, metallurgy, building materials, and chemicals. They achieve crushing by applying high pressure to materials through two opposing rotating extrusion rollers. However, in existing technology, the wear-resistant plates of the feed regulating valve of the roller mill are easily worn due to the continuous impact of the ore. Since the wear-resistant plates of the feed regulating valves in existing roller mills are mostly fixed structures welded to the regulating valve frame, they cannot be directly replaced on-site after impact damage. The entire feed valve needs to be disassembled from the high-pressure roller mill, the old wear-resistant plate cut off, a new wear-resistant plate welded, and then reinstalled on the high-pressure roller mill. This disassembly and reassembly not only requires manual entry into the equipment but also involves a long disassembly and reassembly time, resulting in prolonged time spent inside the equipment and high risks. Combined with the time required for cutting and replacement, this leads to long overall maintenance times, prolonged equipment downtime, inconvenient maintenance, and high maintenance costs. Summary of the Invention

[0003] (a) Technical problems to be solved To overcome the shortcomings of existing technologies, a roller mill feeding device that is easy to maintain is proposed to solve one or more of the above-mentioned problems.

[0004] (II) Technical Solution The present invention is achieved through the following technical solution: The present invention proposes a feed device for a roller mill that is easy to maintain, the structure of which includes a feed regulating valve, the feed regulating valve being used for opening and closing control of the feed inlet of the roller mill and for feed guidance; The feed regulating valve includes a wear-resistant plate, a lifting plate, an assembly frame, a positioning plate, and a hanging rod. Two positioning plates are fixed to the wear-resistant plate in a mirror image. A sliding groove is formed between the two positioning plates and the wear-resistant plate on their opposite sides. The wear-resistant plate is slidably sleeved onto the assembly frame through the sliding groove. The wear-resistant plate is located on the side of the assembly frame adjacent to the feed inlet. The positioning plates are located on both sides of the assembly frame. A lifting plate is fixed to the outside of the wear-resistant plate adjacent to the roller mill. The lifting plate is used for lifting and dragging the wear-resistant plate during assembly and disassembly. The hanging rod is provided with an L-shaped or U-shaped hook structure. One end of the hanging rod is fixed to the wear-resistant plate, and the other end of the hanging rod is connected to the assembly frame through the hook structure. The hanging rod is used for sliding limit of the wear-resistant plate slidingly sleeved on the assembly frame.

[0005] Furthermore, the lifting plate is provided with lifting holes or grooves.

[0006] Furthermore, the limiting component is a limiting plate, which is used to limit the maximum sliding distance of the positioning plate when the wear-resistant plate is assembled on the assembly frame.

[0007] Furthermore, the top of the roller mill is equipped with a hinge seat, on which a power source is hingedly mounted. A reinforcing plate is fixed on the side of the assembly frame away from the feed inlet. The feed regulating valve is provided with a hinge hole. The reinforcing plate is hinged to the shaft and assembled inside the roller mill through the hinge hole. A control connecting plate is fixed in the middle of the side of the assembly frame away from the feed inlet. A connecting hole is provided through the control connecting plate on the side away from the assembly frame. The top of the roller mill is also provided with a baffle maintenance port. The side of the control connecting plate with the connecting hole passes through the baffle maintenance port and is hinged to one end of the drive component. The other end of the drive component is connected to the power source. A grinding roller is also provided inside the roller mill, and the grinding roller is located below the feed regulating valve.

[0008] Furthermore, the hinge seat, power source, drive component, feed regulating valve, shaft and grinding roller are all provided in two and mirrored configurations, and the feed inlet is located directly above the two feed regulating valves.

[0009] Furthermore, the feed regulating valve also includes a reinforcing plate, which is located on the side of the wear-resistant plate adjacent to the feed inlet.

[0010] Furthermore, the assembly frame is hinged to the inside of the roller mill via a shaft, and the feed inlet and the reinforcing plate are both located on the side of the shaft away from the lifting plate.

[0011] Furthermore, the reinforcing plate covers the entire wear-resistant plate on the side of the shaft away from the lifting plate.

[0012] Furthermore, the reinforcing plate is partially located at the first contact point between the reinforcing plate and the feed inlet during material feeding.

[0013] Furthermore, the feed regulating valve also includes a limiting component, which is fixed to the side end of the assembly frame and is used to limit the sliding of the positioning plate when the wear-resistant plate is slidably sleeved on the assembly frame.

[0014] Furthermore, the feed regulating valve also includes a locking element, which is used to reinforce the locking of the wear-resistant plate in the assembly position on the assembly frame.

[0015] Furthermore, the locking element is a combination of a bolt and a nut.

[0016] Furthermore, the feed regulating valve also includes a pressure sensor and a detection plate, both of which are embedded in the assembly frame. The pressure sensor is used to sense the pressure on the detection plate, and the detection plate is used to sense and detect when the wear-resistant plate is worn through.

[0017] Furthermore, the feed regulating valve also includes a protective component. The side of the detection plate away from the pressure sensor is connected to the protective component, and the side of the protective component away from the detection plate is connected to the wear-resistant plate and is flush with the side of the assembly frame connected to the wear-resistant plate. The protective component is made of a material with elastic deformation capability, and the area of ​​the protective component is larger than that of the detection plate. The protective component is used to protect the detection plate.

[0018] Furthermore, the protective component is made of rubber or thin steel plate.

[0019] Furthermore, the control board is provided with a wire groove, which is used for the wiring protection of the power lines.

[0020] (III) Beneficial Effects One of the above technical solutions has the following advantages or beneficial effects: By incorporating a positioning plate structure and a hook-type hanging rod on the wear-resistant plate, a groove is formed between the positioning plate and the wear-resistant plate. This allows the wear-resistant plate to slide onto the assembly frame from one side via a pin, and is then slidably and quickly positioned using the hanging rod. Disassembly is also quick and easy; simply drag the wear-resistant plate to remove it from the assembly frame for replacement. The positioning and limiting structures are concentrated on the wear-resistant plate. Combined with the lifting plates on the wear-resistant plate, the wear-resistant plate can be hoisted from the external inspection port for easy disassembly and replacement, eliminating the inconvenience of entering the equipment for disassembly and the cumbersome operations of cutting and welding. The centralized positioning and limiting structures on the wear-resistant plate facilitate maintenance and replacement, reducing maintenance of the assembly frame, significantly reducing overall maintenance time, and lowering maintenance costs. Attached Figure Description

[0021] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a three-dimensional cross-sectional structural diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the first feed regulating valve of the present invention; Figure 3 This is a three-dimensional structural schematic diagram of the second type of feed regulating valve of the present invention; Figure 4 This is a three-dimensional structural schematic diagram of the third type of feed regulating valve of the present invention; Figure 5 This is a three-dimensional cross-sectional view of the feed regulating valve according to Embodiment Six of the present invention; Figure 6 For the present invention Figure 5 A magnified structural diagram of A in the middle; Figure 7 This is a three-dimensional structural diagram of the present invention; In the diagram: Roller mill-1, Hinge seat-2, Power source-3, Drive component-4, Feed regulating valve-5, Feed inlet-6, Baffle maintenance port-7, Shaft-8, Grinding roller-9, Wear-resistant plate-501, Lifting plate-502, Assembly frame-503, Connecting hole-504, Control connecting plate-505, Reinforcing plate-506, Hinge hole-507, Positioning plate-508, Limiting component-509, Reinforcing plate-510, Hanging rod-511, Locking component-512, Pressure sensor-513, Protective component-514, Detection plate-515, Cable trough-516. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to embodiments, but the implementation of the present invention is not limited thereto.

[0023] Example 1: like Figure 1-2 As shown in Figure 7, the present invention provides a feed device for a roller mill that is easy to maintain: its structure includes a feed regulating valve 5, which is used for the opening and closing control of the feed inlet 6 of the roller mill 1 and for feed guidance; The feed regulating valve 5 includes a wear-resistant plate 501, a lifting plate 502, an assembly frame 503, a positioning plate 508, and a hanging rod 511. Two positioning plates 508 are fixed to the wear-resistant plate 501 in a mirror image. A sliding groove is formed between the opposing sides of the two positioning plates 508 and the wear-resistant plate 501. The wear-resistant plate 501 is slidably fitted onto the assembly frame 503 through the sliding groove. The wear-resistant plate 501 is located on the side of the assembly frame 503 adjacent to the feed inlet 6. The positioning plate 508 is located on the side of the assembly frame 503 adjacent to the feed inlet 6. On both sides of the frame 503, the wear-resistant plate 501 is fixed with a lifting plate 502 near the outside of the roller mill 1. The lifting plate 502 is used for lifting and dragging the wear-resistant plate 501 during assembly and disassembly. The hanging rod 511 is provided with an L-shaped or U-shaped hook structure. One end of the hanging rod 511 is fixed to the wear-resistant plate 501, and the other end of the hanging rod 511 is connected to the assembly frame 503 through the hook structure. The hanging rod 511 is used for sliding limit of the wear-resistant plate 501 slidingly sleeved on the assembly frame 503.

[0024] During use, if the wear-resistant plate 501 is worn, after the equipment is stopped, a lifting device such as a hook can be inserted through the inspection port to connect with the lifting plate 502. Then, the lifting plate 502 can be pulled apart from the assembly frame 503 by the lifting device to complete the removal of the old plate. The new plate can then be lifted in by the lifting device. By aligning the groove between the wear-resistant plate 501 and the assembly frame 503 with the side end of the assembly frame 503, the wear-resistant plate 501 and the assembly frame 503 can be slidably fitted onto the assembly frame 503 for assembly. After assembly, the hanging rod 511 ensures that the wear-resistant plate 501 and the positioning plate 508 are limited in position on the assembly frame 503, preventing excessive sliding and ensuring accurate positioning. The positioning and limiting structure is concentrated on the wear-resistant plate 501, which can be directly replaced after being pulled out. This device reduces maintenance on the assembly frame, allowing for subsequent repairs and reuse of the structure on the old wear-resistant plate 501 without affecting normal equipment operation. It significantly reduces or eliminates the inconvenience of entering the equipment for disassembly and assembly, and avoids the cumbersome operations of cutting and welding to remove the wear-resistant plate 501 from the valve plate. Removing the entire valve plate and cutting and replacing the entire wear-resistant plate requires multiple people and at least several days. However, by directly replacing the wear-resistant plate 501 with this device, only a few hours of downtime are needed, and cutting and replacing the hanging rods on the old plate also takes only a few hours. Therefore, it enables relatively rapid repair and replacement of the wear-resistant plate 501, greatly reducing overall maintenance time and costs. Furthermore, it is more adaptable and facilitates rapid replacement when there is a need for replacement wear-resistant plate materials or structures.

[0025] like Figure 2 As shown, in one embodiment, the lifting plate 502 is provided with lifting holes or grooves.

[0026] In one embodiment, there is one or more lifting plates 502, and multiple lifting plates 502 make it easier to balance the lifting outside the equipment. The lifting plates 502 can also be installed on the positioning plate 508.

[0027] In one embodiment, the positioning plate 508 is fixed to the side of the wear-resistant plate 501 adjacent to the assembly frame 503, ensuring the flatness of the impact surface of the wear-resistant plate 501 and avoiding wear on the fixing point between the positioning plate 508 and the wear-resistant plate 501, further ensuring the safety of the assembly and the smooth flow of the valve plate.

[0028] Example 2: like Figure 2 and 7As shown, compared to the previous embodiment, the roller mill 1 in this embodiment is equipped with a hinge seat 2 on its top, and a power source 3 is hingedly mounted on the hinge seat 2. A reinforcing plate 506 is fixed on the side of the assembly frame 503 away from the feed inlet 6. A hinge hole 507 is provided on the feed regulating valve 5. The reinforcing plate 506 is hinged to the shaft 8 and mounted inside the roller mill 1 through the hinge hole 507. A control connecting plate 505 is fixed in the middle of the side of the assembly frame 503 away from the feed inlet 6. A connecting hole 504 is provided through the side of the control connecting plate 505 away from the assembly frame 503. A baffle maintenance port 7 is also provided on the top of the roller mill 1. The side of the control connecting plate 505 with the connecting hole 504 passes through the baffle maintenance port 7 and is hinged to one end of the drive component 4. The other end of the drive component 4 is connected to the power source 5. A grinding roller 9 is also provided inside the roller mill 1. The grinding roller 9 is located below the feed regulating valve 5.

[0029] In use, the power source 3 can drive one end of the control plate 505 to move laterally through the drive component 4, thereby driving one end of the assembly frame 503 to move laterally. During the lateral movement, since the reinforcing plate 506 is hinged to the shaft 8 inside the roller mill 1 through the hinge hole 507, the assembly frame 503 will form a lever structure with the shaft 8 as the fulcrum. This will cause the side of the assembly frame 503 away from the drive component 4 to rotate in the opposite direction to the side adjacent to the drive component 4. By placing the side of the assembly frame 503 away from the drive component 4 below the feed inlet 6, the feed flow rate of the wear-resistant plate 501 driven by the assembly frame 503 can be controlled by the assembly frame 503. Since the power source 3 is hinged to the hinge seat 2, and the power source 3 and the control plate 505 are also hinged, they can rotate relative to each other without interference. The setting of the baffle maintenance port 7 also facilitates the lifting and replacement of the wear-resistant plate 501.

[0030] like Figure 2 and 7 As shown, in one embodiment, the hinge seat 2, power source 3, drive component 4, feed regulating valve 5, shaft 8 and grinding roller 9 are each provided in two and mirrored configurations, and the feed port 6 is located directly above the two feed regulating valves 5.

[0031] Example 3: like Figure 3 and Figure 4 As shown, in one embodiment, the feed regulating valve 5 further includes a reinforcing plate 510, which is disposed on the side of the wear-resistant plate 501 adjacent to the feed inlet 6.

[0032] The reinforcement plate 510 avoids the problem that existing wear-resistant plates 501 often use a uniform thickness. In reality, when the feed valve is tilted, the material enters through the feed inlet 6 and first contacts the part of the wear-resistant plate 501 located below the side wall of the feed inlet 6. This part is the highest contact point. After contacting the wear-resistant plate 501, the material slides along the wear-resistant plate 501 due to guidance, thus reducing the impact on the other lower wear-resistant plates. As a result, the wear-resistant plate 501 below the side wall of the feed inlet 6 has a much higher wear degree than the rest, which can easily lead to local wear and perforation while the rest of the wear is not much worn. However, when the wear-resistant plate 501 is replaced, the entire plate needs to be replaced, which can easily lead to waste. Therefore, the reinforcement plate 510 is set on the side of the wear-resistant plate 501 near the feed inlet 6, which can increase the service life of the wear-resistant plate 501 and reduce the frequency of plate replacement.

[0033] like Figure 3 and Figure 4 As shown, in one embodiment, the mounting frame 503 is hinged to the inside of the roller mill 1 via the shaft 8. The feed port 6 and the reinforcing plate 510 are both located on the side of the shaft 8 away from the lifting plate 502. Because the side of the shaft 8 adjacent to the lifting plate 502 is outside the effective working range of the valve plate and will not be impacted by the feed, the reinforcing plate 510 is not required, which can reduce costs and equipment weight.

[0034] like Figure 3 As shown, in one embodiment, the reinforcing plate 510 covers the wear-resistant plate 501 on the side of the shaft 8 away from the lifting plate 502. The reinforcing plate 510 can be configured to be thinned at an angle from the side adjacent to the feed port 6 to the side away from the feed port 6, adapting to wear conditions and saving costs.

[0035] like Figure 4 As shown, in one embodiment, the reinforcing plate 510 is partially disposed below the side wall of the feed inlet 6 to specifically reinforce wear points and further reduce costs.

[0036] Example 4: like Figure 3 As shown, compared with the previous embodiment, the feed regulating valve 5 in this embodiment also includes a limiting member 509. The limiting member 509 is fixed to the side end of the assembly frame 503. The limiting member 509 is used to limit the sliding of the positioning plate 508 when the wear-resistant plate 501 is slidably sleeved on the assembly frame 503.

[0037] like Figure 3 As shown, in one embodiment, the limiting member 509 is a limiting plate, which is used to limit the maximum sliding distance of the positioning plate 508 when the wear-resistant plate 501 is assembled on the assembly frame 503.

[0038] In use, after the wear-resistant plate 501 is slidably assembled, when the wear-resistant plate 501 is slidably limited by the hanging rod 511, the limiting part 509 on the assembly frame 503 will also slide and limit the positioning plate 508, reducing the force on the hanging rod 511 and enhancing the limiting stability.

[0039] Example 5: like Figure 4 As shown, compared with the previous embodiment, the feed regulating valve 5 in this embodiment also includes a locking member 512, which is used to reinforce the locking of the wear-resistant plate 501 on the assembly frame 503.

[0040] During use, disassembly and assembly require a brief manual entry into the equipment to lock and unlock the wear plate 501, but this can greatly enhance the stability of the wear plate 501 on the assembly frame 503. During assembly, the locking piece 512 is placed on the side of the shaft 8 adjacent to the lifting plate 502.

[0041] In one embodiment, the locking element 512 is a combination of a bolt and a nut.

[0042] Example 6: like Figure 5 and 6 As shown, compared with the previous embodiment, the feed regulating valve 5 in this embodiment also includes a pressure sensor 513 and a detection plate 515. The pressure sensor 513 and the detection plate 515 are both embedded in the mounting frame 503. The pressure sensor 513 is used to sense the pressure on the detection plate 515, and the detection plate 515 is used to sense and detect when the wear-resistant plate 501 is worn through.

[0043] When the wear plate 501 wears, the detection plate 515 will be impacted and press against the pressure sensor 513, so that the user can know the wear condition of the wear plate 501 in time through pressure changes, and facilitate the timely replacement of the wear plate 501.

[0044] like Figure 6 As shown, in one embodiment, the feed regulating valve 5 further includes a protective member 514. The side of the detection plate 515 away from the pressure sensor 513 is connected to the protective member 514. The side of the protective member 514 away from the detection plate 515 is connected to the wear-resistant plate 501 and is flush with the side of the mounting bracket 503 connected to the wear-resistant plate 501. The protective member 514 is made of a material with elastic deformation capability. The area of ​​the protective member 514 is larger than that of the detection plate 515. The protective member 514 is used to protect the detection plate 515.

[0045] During use, after the wear plate 501 is worn, the material will not directly impact the wear detection plate 515, but will first impact the wear protection part 514 to avoid damage to the detection plate 515 and the pressure sensor 513.

[0046] In one embodiment, the protective element 514 is made of rubber or thin steel sheet.

[0047] like Figure 6 As shown, in one embodiment, the control board 505 is provided with a wire groove 516, which is used for the wiring protection of the power line, so as to facilitate the wiring protection of the pressure sensor 513.

[0048] In the description of this invention, it should be noted that the terms "upper", "lower", "left", "right", etc., 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 invention 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 limiting this invention.

[0049] The control method of this invention is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this invention is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A feed device for a roller mill that is easy to maintain, the structure of which includes a feed regulating valve (5), the feed regulating valve (5) being used for the opening and closing control of the feed inlet (6) of the roller mill (1) and for feed guidance; Its features are: The feed regulating valve (5) includes a wear-resistant plate (501), a lifting plate (502), an assembly frame (503), a positioning plate (508), and a hanging rod (511). Two positioning plates (508) are fixed to the wear-resistant plate (501) in a mirror image. A sliding groove is formed between the two positioning plates (508) and the wear-resistant plate (501) on their opposite sides. The wear-resistant plate (501) is slidably sleeved onto the assembly frame (503) through the sliding groove. The wear-resistant plate (501) is located on the side of the assembly frame (503) adjacent to the feed inlet (6). The positioning plate (508) is located on the side of the feed inlet (6). On both sides of the assembly frame (503), the wear-resistant plate (501) is fixed with a lifting plate (502) near the outside of the roller mill (1). The lifting plate (502) is used for lifting and dragging the wear-resistant plate (501) during disassembly and assembly. The hanging rod (511) is provided with an L-shaped or U-shaped hook structure. One end of the hanging rod (511) is fixed on the wear-resistant plate (501), and the other end of the hanging rod (511) is connected to the assembly frame (503) through the hook structure. The hanging rod (511) is used for sliding limit of the wear-resistant plate (501) slidingly sleeved on the assembly frame (503).

2. The easy-to-maintain roller mill feeding device according to claim 1, characterized in that: The roller mill (1) is equipped with a hinge seat (2) on its top. A power source (3) is hinged to the hinge seat (2). A reinforcing plate (506) is fixed to the side of the assembly frame (503) away from the feed inlet (6). A hinge hole (507) is provided on the feed regulating valve (5). The reinforcing plate (506) is hinged to the shaft (8) inside the roller mill (1) through the hinge hole (507). A control connecting plate (5) is fixed to the middle of the side of the assembly frame (503) away from the feed inlet (6). 05), the control plate (505) is provided with a connecting hole (504) on the side away from the assembly frame (503), the top of the roller mill (1) is also provided with a baffle maintenance port (7), the side of the control plate (505) with the connecting hole (504) passes through the baffle maintenance port (7) and is hinged to one end of the drive component (4), the other end of the drive component (4) is connected to the power source (5), the inside of the roller mill (1) is also provided with a grinding roller (9), the grinding roller (9) is located below the feed regulating valve (5).

3. The easy-to-maintain roller mill feeding device according to claim 2, characterized in that: The hinge seat (2), power source (3), drive component (4), feed regulating valve (5), shaft (8) and grinding roller (9) are all provided in two and mirrored configurations, and the feed port (6) is located directly above the two feed regulating valves (5).

4. The easy-to-maintain roller mill feeding device according to claim 1, characterized in that: The feed regulating valve (5) also includes a reinforcing plate (510), which is located on the side of the wear-resistant plate (501) adjacent to the feed inlet (6).

5. The easy-to-maintain roller mill feeding device according to claim 4, characterized in that: The assembly frame (503) is hinged to the inside of the roller mill (1) via the shaft (8), and the feed port (6) and the reinforcing plate (510) are both located on the side of the shaft (8) away from the lifting plate (502).

6. A maintenance-friendly roller mill feeding device according to claim 4 or 5, characterized in that: The reinforcing plate (510) is partially located at the first contact point between the feed inlet (6) and the wear-resistant plate (501) when the material is fed out.

7. The easy-to-maintain roller mill feeding device according to claim 1, characterized in that: The feed regulating valve (5) also includes a limiting member (509), which is fixed to the side of the assembly frame (503). The limiting member (509) is used to limit the sliding of the positioning plate (508) when the wear-resistant plate (501) is slidably sleeved on the assembly frame (503).

8. A roller mill feeding device that is easy to maintain according to claim 1, characterized in that: The feed regulating valve (5) also includes a locking element (512), which is used to reinforce the locking position of the wear-resistant plate (501) on the assembly frame (503).

9. A maintenance-friendly roller mill feeding device according to any one of claims 1-5 or 7-8, characterized in that: The feed regulating valve (5) also includes a pressure sensor (513) and a detection plate (515). The pressure sensor (513) and the detection plate (515) are both embedded in the mounting frame (503). The pressure sensor (513) is used to sense the pressure on the detection plate (515), and the detection plate (515) is used to sense and detect when the wear-resistant plate (501) is worn through.

10. A roller mill feeding device for easy maintenance according to claim 9, characterized in that: The feed regulating valve (5) also includes a protective component (514). The side of the detection plate (515) away from the pressure sensor (513) is connected to the protective component (514). The side of the protective component (514) away from the detection plate (515) is connected to the wear-resistant plate (501) and is flush with the side of the assembly frame (503) connected to the wear-resistant plate (501). The protective component (514) is made of a material with elastic deformation capability. The area of ​​the protective component (514) is larger than that of the detection plate (515). The protective component (514) is used to protect the detection plate (515).

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