Adjusting mechanism and coal mill grinding roller dismounting and mounting device

Abstract

The utility model relates to the technical field of coal mills, in particular to an adjusting mechanism and a coal mill grinding roller dismounting device, and the adjusting mechanism comprises an adjusting assembly which comprises a mounting piece, a coal grinding piece arranged on the mounting piece, a guide piece arranged on the coal grinding piece and an adjusting piece arranged on the coal grinding piece; the intermittent assembly comprises a feeding piece arranged on the mounting piece and a shifting piece arranged on the feeding piece, the connecting block drives the grinding roller to rotate along the guide piece through operation of the adjusting piece, the angle of the grinding roller is adjusted, the gap can be automatically adjusted according to coal quality changes and the abrasion condition of the grinding roller, the stability of the fineness of pulverized coal is ensured, and the working efficiency is improved. The coal grinding efficiency is effectively improved, the feeding piece is stirred through the stirring piece, coal can be evenly fed to the coal grinding machine, the uniformity of the fineness of pulverized coal is effectively improved, and the combustion efficiency and stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mills, in particular to an adjusting mechanism and a coal mill roller disassembly and assembly device. Background Art

[0002] In a thermal power plant, the coal mill is one of the key equipment in the thermal power production process. Its function is to grind large pieces of coal into fine coal powder so that it can be burned more efficiently and evenly in the boiler, thereby improving the energy conversion efficiency of the entire thermal power plant. Coal mills are mainly divided into concentrated types such as ball mills, roller mills, hammer mills and air flow mills. Among them, roller mills are suitable for coal blocks with higher hardness.

[0003] In actual use, the working principle of the coal mill is that the hydraulic rod drives the grinding roller group to press down, generate grinding pressure with the grinding disc, grind the coal blocks, and blow the ground coal powder through the hot air system for transportation. However, after long-term operation, grooves and pear grooves gradually appear on the surface of the grinding roller and the lining tile, and the depth and width gradually increase. Due to uneven surface wear and the generation of grooves and pear grooves, the gap between the grinding roller and the grinding disc becomes larger and larger, which may cause instability in the fineness of the coal powder and reduce the grinding efficiency of the coal mill. When feeding coal to the coal mill, too much or too little uneven coal feeding will affect the grinding effect, which may cause uneven coal powder fineness, thereby affecting combustion efficiency. When the grinding roller is severely worn and needs to be replaced, it is difficult to quickly disassemble and assemble the existing coal mill to reduce downtime and the time and difficulty of manual operation. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the fact that the gap between the grinding roller and the grinding disc becomes larger and larger, which may cause the instability of the coal powder fineness and the uneven coal feeding of the coal mill, the present utility model is proposed.

[0006] Therefore, an object of the present invention is to provide an adjustment mechanism.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an adjusting mechanism, including an adjusting assembly, including a mounting part, a coal grinding part arranged on the mounting part, a guide part arranged on the coal grinding part, and an adjusting part arranged on the coal grinding part; and an intermittent assembly, including a feeding part arranged on the mounting part, and a toggle part arranged on the feeding part.

[0008] As a preferred solution of the adjustment mechanism of the utility model, the mounting part includes a base, a shell arranged on the base, a material inlet arranged on the shell, an air inlet arranged on the shell, and a powder discharge port arranged on the shell.

[0009] As a preferred solution of the adjustment mechanism of the utility model, the coal grinding component includes a first motor, a reducer arranged in the base, a grinding disc arranged on the base, a tripod arranged in the shell, a connecting block arranged on the tripod, a grinding roller arranged on the connecting block, and a hydraulic rod arranged on the base.

[0010] As a preferred solution of the adjustment mechanism of the present invention, the guide member includes a fixed block arranged on the tripod, and a worm gear arranged on the fixed block.

[0011] As a preferred solution of the adjustment mechanism of the present invention, the adjustment member includes an opening provided on the connecting block, a motor provided on the connecting block, and a worm provided on the output end of the motor.

[0012] As a preferred solution of the adjustment mechanism of the utility model, the feeding part includes a placing table arranged in the shell, a cover plate arranged on the feeding port, a movable plate arranged on the placing table, a first spring arranged on the placing table, a second spring arranged on the placing table, and a limiting rod arranged on the placing table.

[0013] As a preferred solution of the adjustment mechanism of the utility model, the toggle member includes a second motor arranged on the placement table, a connecting shaft arranged on the output end of the second motor, a first toggle rod arranged on the connecting shaft, and a second toggle rod arranged on the connecting shaft.

[0014] The beneficial effects of the adjustment mechanism described in the utility model are as follows: the utility model enables the connecting block to rotate along the guide member with the grinding roller through the operation of the adjustment member, thereby realizing the adjustment of the grinding roller angle. The gap can be automatically adjusted according to the change of coal quality and the wear of the grinding roller, thereby ensuring the stability of the coal powder fineness and effectively improving the coal grinding efficiency. The feeding member is moved by the toggle member, so that the coal mill can be fed with coal evenly, effectively improving the uniformity of the coal powder fineness and improving the combustion efficiency and stability.

[0015] In view of the fact that in actual use, there is still the problem that the grinding roller is difficult to be quickly disassembled and assembled.

[0016] In order to solve the above technical problems, the present invention also provides the following technical solutions: a coal mill grinding roller disassembly and assembly device, including the above-mentioned adjustment mechanism, and also including a disassembly and assembly component, including a rotating part arranged on the coal grinding part, and a locking part arranged on the coal grinding part.

[0017] As a preferred solution of the coal mill grinding roller disassembly and assembly device of the utility model, the rotating part includes a circular groove opened on the coal grinding part, a triangular paddle arranged in the circular groove, and a rotating knob arranged on the triangular paddle.

[0018] As a preferred solution of the coal mill roller disassembly and assembly device of the utility model, the locking member includes a locking block arranged in the circular groove and a hole opened on the coal grinding member.

[0019] The beneficial effects of the coal mill grinding roller disassembly and assembly device described in the utility model are as follows: the utility model realizes the rapid disassembly and assembly of the grinding roller by rotating the rotating part so that the locking part can lock or disassemble the grinding roller, effectively reducing the downtime required for replacing the grinding roller, as well as the time and difficulty of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0021] Figure 1 It is an overall schematic diagram of the adjustment mechanism and the coal mill roller disassembly and assembly device of the utility model.

[0022] Figure 2 This is a cross-sectional view of the adjusting mechanism and the coal mill roller disassembly and assembly device of the utility model.

[0023] Figure 3 This is a schematic diagram of the guide member and the adjusting member of the adjusting mechanism of the present invention.

[0024] Figure 4 for Figure 3 A in the enlarged view.

[0025] Figure 5 Schematic diagram of the intermittent component of the adjustment mechanism of the present invention.

[0026] Figure 6 This is a schematic diagram of the disassembly and assembly components of the coal mill grinding roller disassembly and assembly device of the present invention.

[0027] Figure 7 for Figure 6Enlarged view of point B in . DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Example 1

[0032] Reference Figure 1-Figure 7 , which is the first embodiment of the present utility model, provides an adjustment mechanism, including an adjustment component 100, including a mounting part 101, used to receive a coal grinding part 102, the coal grinding part 102 arranged on the mounting part 101, grinding coal blocks, a guide part 103 arranged on the coal grinding part 102, providing a guide for the adjustment part 104, and the adjustment part 104 arranged on the coal grinding part 102, driving the coal grinding part 102 to adjust the angle during operation; and an intermittent component 200, including a feeding part 201 arranged on the mounting part 101, feeding the coal grinding part 102, and a toggle part 202 arranged on the feeding part 201, when the feeding part 201 is toggled, the feeding part 201 can feed intermittently.

[0033] Specifically, the mounting member 101 includes a base 101a, a shell 101b fixedly connected to the base 101a, a material inlet 101c provided on the shell 101b, an air inlet 101d provided on the shell 101b, and a powder discharge port 101e provided on the shell 101b. The base 101a is used to provide support for the shell 101b. The shell 101b is used to accommodate the coal grinding member 102. The coal blocks enter the coal mill through the material inlet 101c. The air inlet 101d is connected to the fan to deliver hot air to the inside of the coal mill, blow up the ground coal powder and transport it, and discharge it through the powder discharge port 101e.

[0034] Furthermore, the coal grinding element 102 includes a first motor 102a, a reducer 102b fixedly connected to the base 101a, a grinding disc 102c rotatably connected to the base 101a, a tripod 102d disposed in the housing 101b, a connecting block 102e disposed on the tripod 102d, a grinding roller 102f rotatably connected to the connecting block 102e, and a hydraulic rod 102g fixedly connected to the base 101a. The first motor 102a is fixedly connected to the reducer 102b. The first motor 102a is a reducer. The speed machine 102b provides driving force, the reducer 102b is used to reduce the speed of the first motor 102a and increase the output torque so that the speed meets actual needs, the grinding disc 102c is used to hold coal blocks, and the grinding disc 102c is fixedly connected to the output end of the speed reducer 102b. The tripod 102d is used to receive the connecting block 102e and the grinding roller 102f. The end of the hydraulic rod 102g is fixedly connected to the tripod 102d. There are multiple connecting blocks 102e, grinding roller 102f and hydraulic rod 102g, and they are evenly distributed around the circumference.

[0035] Furthermore, the guide member 103 includes a fixed block 103a fixedly connected to the tripod 102d, and a worm gear 103b fixedly connected to the fixed block 103a. The fixed block 103a is used to support the worm gear 103b, and the worm gear 103b is used to guide the adjusting member 104. There are multiple fixed blocks 103a and worm gears 103b and they are evenly distributed around the circumference.

[0036] Furthermore, the adjusting member 104 includes an opening 104a opened on the connecting block 102e, a motor 104b fixedly connected to the connecting block 102e, and a worm 104c fixedly connected to the output end of the motor 104b. The motor 104b is arranged in the opening 104a, and the motor 104b provides driving force for the worm 104c. The worm 104c is engaged with the worm wheel 103b. The opening 104a, the motor 104b and the worm 104c are all provided in plurality and are evenly distributed around the circumference.

[0037] Operation process: When the coal block enters the coal mill through the feed port 101c, the coal block falls on the grinding disc 102c, the first motor 102a is started, and the grinding disc 102c is driven to rotate through the reducer 102b. At this time, the hydraulic rod 102g is pressed down to drive the tripod 102d to press down, and the tripod 102d drives the grinding roller 102f to press down through the connecting block 102e. The grinding roller 102f and the grinding disc 102c generate a crushing force to grind the coal block. When the grinding roller needs to be adjusted, When the angle is 102f, the motor 104b is started, and the motor 104b drives the worm 104c to rotate. Since the worm 104c is engaged with the worm wheel 103b, the worm 104c drives the connecting block 102e to rotate along the fixed block 103a along the guide of the worm wheel 103b, thereby realizing the adjustable angle of the grinding roller 102f. The gap can be automatically adjusted according to the changes in coal quality and the wear of the grinding roller 102f, ensuring the stability of the coal powder fineness and effectively improving the coal grinding efficiency.

[0038] Example 2

[0039] Reference Figure 5 , which is the second embodiment of the present invention, and is different from the previous embodiment in that: the feeding member 201 includes a placing table 201a fixedly connected to the housing 101b, a cover plate 201b rotatably connected to the bottom of the feed port 101c, a moving plate 201c slidably connected to the placing table 201a, a first spring 201d fixedly connected to the placing table 201a, a second spring 201e fixedly connected to the placing table 201a, and a limiting rod 201f rotatably connected to the placing table 201a, and a setting on the placing table 201a. The limiting block and the column, the placing platform 201a is used to receive the feeding piece 201 and the toggle piece 202, the cover plate 201b covers the feeding port 101c, the end of the cover plate 201b is rotatably connected to the movable plate 201c, the movable plate 201c is slidably connected to the limit on the placing platform 201a, and a plurality of protrusions are provided on the movable plate 201c. The first spring 201d provides thrust for the movable plate 201c, and the second spring 201e provides thrust for the limiting rod 201f, and the limiting rod 201f limits the movable plate 201c.

[0040] Specifically, the toggle member 202 includes a second motor 202a fixedly connected to the placement platform 201a, a connecting shaft 202b fixedly connected to the output end of the second motor 202a, a first toggle rod 202c fixedly connected to the connecting shaft 202b, and a second toggle rod 202d fixedly connected to the connecting shaft 202b. The second motor 202a provides driving force for the connecting shaft 202b, and the connecting shaft 202b drives the first toggle rod 202c and the second toggle rod 202d to rotate. The first toggle rod 202c toggle the protrusion on the top of the movable plate 201c, and the second toggle rod 202d toggle the limit rod 201f.

[0041] The rest of the structure is the same as that of Example 1.

[0042] Operation process: When the coal block passes through the feed port 101c, the second motor 202a is started, and the connecting shaft 202b rotates accordingly, driving the first lever 202c and the second lever 202d to rotate. When the first lever 202c moves the protrusion on the top of the movable plate 201c, the movable plate 201c moves upward, driving the cover plate 201b to rotate and connect to the feed port 101c, and open. The first spring 201d is tightened, and the protrusion at the bottom of the movable plate 201c drives the limit rod 201f to rotate, and the second spring 201e is opened. When the movable plate 201c moves up to a certain extent, the limit rod 201f is reset under the thrust of the second spring 201e. To limit the movable plate 201c, when the second lever 202d moves the limit lever 201f, the second spring 201e is tightened, and the limit lever 201f cancels the limit on the movable plate 201c. The movable plate 201c moves downward under the thrust of the first spring 201d and is slidably connected to the limit block on the placement platform 201a. The movable plate 201c moves downward, driving the cover plate 201b to reset. When it moves down to a certain extent, the protrusion in the middle of the movable plate 201c is limited by the column on the placement platform 201a and no longer moves down. The intermittent opening of the cover plate 201b can feed coal to the coal mill evenly, effectively improving the uniformity of coal powder fineness and improving combustion efficiency and stability.

[0043] Example 3

[0044] Reference Figure 6-Figure 7 , which is the third embodiment of the present utility model. Different from the above embodiments, this embodiment provides a coal mill roller disassembly and assembly device, including the above-mentioned adjustment mechanism, and also includes a disassembly and assembly component 300, including a rotating part 301 provided on the coal grinding part 102, and a locking part 302 provided on the coal grinding part 102.

[0045] Specifically, the rotating member 301 includes a circular groove 301a provided on the coal grinding member 102, a triangular paddle 301b rotatably connected to the circular groove 301a, and a rotating knob 301c fixedly connected to the triangular paddle 301b. The circular groove 301a is used to connect the triangular paddle 301b and the rotating knob 301c. The triangular paddle 301b is rotatably connected to the side of the grinding roller 102f. The triangular paddle 301b drives the locking member 302 to lock, and the rotating knob 301c drives the triangular paddle 301b to rotate.

[0046] Furthermore, the locking member 302 includes a locking block 302a rotatably connected to the circular groove 301a, and a hole 302b opened on the coal grinding member 102. The locking block 302a is rotatably connected to the side of the grinding roller 102f and is set as an eccentric shaft. The hole 302b is used to receive the locking block 302a. There are multiple locking blocks 302a and holes 302b and they are evenly distributed around the circumference.

[0047] The rest of the structure is the same as that of Example 2.

[0048] Operation process: Replace the grinding roller 102f with a ceramic-metal composite roller. The ceramic-metal composite roller sleeve is made of a special process and is cast from a honeycomb ceramic skeleton and a high-chromium cast iron matrix. At the same time, ductile iron is melt-cast inside to increase the toughness of the grinding roller 102f, absorb vibration performance, improve impact resistance, and prevent cracking. When the grinding roller 102f is severely worn and needs to be replaced, turn the rotating knob 301c, and the rotating knob 301c drives the triangular paddle 301b to rotate. The triangular paddle 301b pokes the locking block 302a. Under the action of the eccentric shaft of the locking block 302a, the locking block 302a rotates and is stuck in the hole 302b, thereby completing the locking of the grinding roller 102f. Conversely, the lock is canceled, so that the grinding roller 102f can be quickly disassembled and assembled on the connecting block 102e, effectively reducing the downtime required for replacing the grinding roller 102f, as well as the time and difficulty of manual operation.

[0049] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0050] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0051] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. An adjustment mechanism, characterized in that: include, An adjusting assembly (100) comprises a mounting member (101), a coal grinding member (102) disposed on the mounting member (101), a guide member (103) disposed on the coal grinding member (102), and an adjusting member (104) disposed on the coal grinding member (102); and The intermittent assembly (200) comprises a feeding member (201) arranged on the mounting member (101), and a shifting member (202) arranged on the feeding member (201).

2. The adjustment mechanism according to claim 1, wherein: The mounting member (101) comprises a base (101a), a shell (101b) arranged on the base (101a), a material inlet (101c) arranged on the shell (101b), an air inlet (101d) arranged on the shell (101b), and a powder discharge port (101e) arranged on the shell (101b).

3. The adjustment mechanism according to claim 2, wherein: The coal grinding component (102) comprises a first motor (102a), a reducer (102b) arranged in the base (101a), a grinding disc (102c) arranged on the base (101a), a tripod (102d) arranged in the housing (101b), a connecting block (102e) arranged on the tripod (102d), a grinding roller (102f) arranged on the connecting block (102e), and a hydraulic rod (102g) arranged on the base (101a).

4. The adjustment mechanism according to claim 3, wherein: The guide member (103) includes a fixed block (103a) arranged on the tripod (102d) and a worm gear (103b) arranged on the fixed block (103a).

5. The adjustment mechanism according to claim 4, wherein: The regulating member (104) includes an opening (104a) opened on the connecting block (102e), a motor (104b) arranged on the connecting block (102e), and a worm (104c) arranged on the output end of the motor (104b).

6. The adjustment mechanism according to claim 5, wherein: The feeding member (201) includes a placement platform (201a) arranged in the shell (101b), a cover plate (201b) arranged on the feeding port (101c), a movable plate (201c) arranged on the placement platform (201a), a first spring (201d) arranged on the placement platform (201a), a second spring (201e) arranged on the placement platform (201a), and a limiting rod (201f) arranged on the placement platform (201a).

7. The adjustment mechanism according to claim 6, wherein: The shifting member (202) comprises a second motor (202a) arranged on the placing platform (201a), a connecting shaft (202b) arranged on the output end of the second motor (202a), a first shifting rod (202c) arranged on the connecting shaft (202b), and a second shifting rod (202d) arranged on the connecting shaft (202b).

8. A coal mill roller disassembly and assembly device, characterized by: The regulating mechanism comprises any one of claims 1 to 7, further comprising: The disassembly assembly (300) comprises a rotating part (301) arranged on the coal grinding part (102), and a locking part (302) arranged on the coal grinding part (102).

9. The coal mill roller disassembly and assembly device according to claim 8, characterized in that: The rotating member (301) comprises a circular groove (301a) provided on the coal grinding member (102), a triangular paddle (301b) provided in the circular groove (301a), and a rotating knob (301c) provided on the triangular paddle (301b).

10. The coal mill roller disassembly and assembly device according to claim 9, characterized in that: The locking member (302) includes a locking block (302a) disposed in the circular groove (301a) and a hole (302b) opened on the coal grinding member (102).

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