Mounting structure for dynamic and static rings of medium-speed coal mill

Abstract

The invention belongs to the technical field of dynamic and static ring installation, and discloses a medium-speed coal mill dynamic and static ring installation structure which comprises a static ring body, a dynamic ring body is installed in the static ring body, and a connecting mechanism is installed at the top end of the dynamic ring body. According to the device, the wear-resisting block can be installed between the static ring body and the movable ring body, when the wear-resisting block is used up due to friction, the poking block is poked to drive the stop block to be separated from the inner wall of the static ring body, due to the fact that no stop block supports, the installation plate and the second connecting rod rotate downwards, the wear-resisting block is separated, and a new wear-resisting block is taken out; after the wear-resistant block is placed in the static ring body, the mounting plate is rotated, the top end of the mounting plate makes contact with the bottom end of the wear-resistant block, the shifting block is shifted to enable the stop block to be located at the bottom end of the mounting plate, the mounting plate is supported and then the position of the stop block is fixed, and therefore the purpose that the device can automatically compensate and replace the wear-resistant block used for a long time conveniently is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of dynamic and static ring installation, in particular to a dynamic and static ring installation structure of a medium-speed coal mill. Background Art

[0002] The official name of the moving and static rings of a coal mill is "movable ring and static ring". The static ring refers to the annular structure fixed on the coal mill housing or grinding disc, while the movable ring is the annular structure that can rotate inside the static ring. These two rings together constitute one of the main structures of the coal mill. The installation of the moving and static rings of a medium-speed coal mill is a key step, and its installation quality directly affects the operating efficiency and performance of the coal mill.

[0003] For example, the utility model with the publication number CN220991083U discloses a medium-speed coal mill moving and stationary ring installation structure, which relates to the field of medium-speed coal mill structure. The medium-speed coal mill moving and stationary ring installation structure includes a transmission shaft, a tray installed on the top of the transmission shaft, a nozzle ring installed on the top of the tray, a grinding ring fixedly installed on the casing, and a wear-resistant plate arranged inside the grinding ring. A mounting plate is slidably connected inside the grinding ring and located on one side of the wear-resistant plate. The wear-resistant plate is connected to the mounting plate. Two moving components are symmetrically arranged inside the grinding ring and located on one side of the mounting plate. The moving components are used to push the mounting plate to move toward the nozzle ring. The medium-speed coal mill moving and stationary ring installation structure controls the movement of the wear-resistant plate by setting a moving component. The wear-resistant plate can move toward the nozzle ring to adjust the distance between the wear-resistant plate and the nozzle ring, thereby reducing the frequency of replacing the wear-resistant plate and the complicated operation caused by the replacement work. It has a simple structure and is easy to use.

[0004] However, the existing moving and static rings of medium-speed coal mills still have disadvantages in actual installation: including but not limited to the following situations: 1. When the moving and static rings are installed on the coal mill, a gap will be generated between the moving ring and the static ring during installation and long-term use. The existence of the gap will affect the performance of the moving and static rings during processing and increase the wear rate between the moving and static rings; 2. The traditional fixing method cannot quickly connect the moving ring to the grinding roller, which is too inconvenient when the model and shape of the moving ring need to be adjusted. The gap between the moving and static rings needs to be filled to reduce wear and extend the service life of the device. The wear-resistant plate used for filling needs to be replaced in time, and the moving ring needs to be firmly installed on the grinding roller. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a moving and stationary ring installation structure of a medium-speed coal mill.

[0006] To achieve the above object, the present invention provides the following technical solutions: a medium-speed coal mill moving and stationary ring installation structure, comprising a stationary ring main body, a moving ring main body is installed inside the stationary ring main body, a stationary ring connecting block is fixed outside the stationary ring main body, a contact seam is arranged inside the stationary ring main body, a limiting mechanism is installed at the top of the stationary ring main body, a disassembly mechanism is installed inside the stationary ring main body, and a connecting mechanism is installed at the top of the moving ring main body; The limiting mechanism includes a first connecting rod, a first supporting spring and an extrusion block, the first connecting rod is slidably connected to the interior of a stationary ring body, the outer wall of the first connecting rod is sleeved with a first supporting spring, the bottom end of the first connecting rod is fixed with an extrusion block, the interior of the stationary ring body is slidably connected with a wear-resistant block, the interior of the stationary ring body is movably connected with a second connecting rod, the outer wall of the second connecting rod is fixed with a mounting plate, a blocking block is arranged inside the stationary ring body, and a shift block is fixed to the bottom end of the blocking block.

[0007] Preferably, the first connecting rods are arranged in several groups, and the first connecting rods are distributed at equal intervals about the central axis of the stationary ring body. The first supporting spring is used to squeeze the first connecting rods and keep them moving downward, and the contact surfaces of the extrusion block and the wear-resistant block have the same bevel angle.

[0008] Preferably, the outer wall of the wear-resistant block is close to the outer wall of the dynamic ring body, the outer wall of the blocking block is close to the inner wall of the static ring body, the blocking block and the static ring body are slidably connected, and the surface of the shift block is provided with several groups of anti-slip grooves, and the anti-slip grooves are evenly spaced about the central axis of the shift block.

[0009] Preferably, the disassembly and assembly mechanism includes a mounting seat, a limiting column and a mounting plate, the mounting seat is fixed to the outside of the blocking block, the limiting column is fixed to the outside of the mounting seat, the mounting plate is fixed to the outside of the limiting column, the limiting plate is sleeved on the outside of the limiting column, a mounting groove is opened inside the static ring body, a second supporting spring is fixed inside the mounting groove, a third connecting rod is provided on the inner wall of the static ring body, a third supporting spring is sleeved on the outer wall of the third connecting rod, and a limiting block is fixed on the outer wall of the third connecting rod.

[0010] Preferably, two groups of mounting seats are provided, the mounting seats are symmetrically distributed about the central axis of the blocking block, the inner wall of the limiting plate is close to the outer wall of the limiting column, the limiting plate and the limiting column are slidably connected, and the diameter of the limiting plate is larger than the diameter of the mounting plate.

[0011] Preferably, two groups of the mounting grooves are provided, and the mounting grooves are symmetrically distributed about the central axis of the blocking block, and the second supporting spring is used to squeeze the mounting disk and keep it moving toward the central axis of the static ring body.

[0012] Preferably, two groups of the third connecting rods are provided, the third connecting rods are symmetrically distributed about the central axis of the installation groove, the outer walls of the third connecting rods are close to the inner wall of the static ring body, and the third connecting rods and the static ring body are slidably connected.

[0013] Preferably, the diameter of the third supporting spring is greater than the diameter of the third connecting rod, and the third supporting spring is used to squeeze the third connecting rod and keep it moving toward the central axis of the installation groove.

[0014] Preferably, the connecting mechanism includes a fourth connecting rod, a connecting seat and a threaded strip, the fourth connecting rod is movably connected to the inside of the moving ring body, a connecting seat is fixed to the top end of the fourth connecting rod, a threaded strip is arranged at one end of the fourth connecting rod, a receiving groove is opened inside the moving ring body, and a limiting screw is arranged inside the receiving groove.

[0015] Preferably, the outer wall of the limiting screw is close to the inner wall of the receiving groove, the limiting screw and the receiving groove are slidably connected, the outer wall of the limiting screw is provided with a plurality of groups of threads, and the limiting screw and the thread strip are meshingly connected.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention cooperates with structures such as the first connecting rod, the first supporting spring, and the extrusion block to enable the device to install the wear-resistant block between the static ring body and the dynamic ring body, and to squeeze the first connecting rod and the extrusion block through the first supporting spring, so that when the extrusion block contacts the wear-resistant block through its own shape, it can drive the wear-resistant block to move toward the central axis position of the dynamic ring body, so that the wear-resistant block contacts the outer wall of the dynamic ring body. Since the wear-resistant block has higher wear resistance, the dynamic ring body will first contact the wear-resistant block when it moves, so that the dynamic ring body can operate normally, and since the wear-resistant block can move in the direction close to the dynamic ring body, the wear-resistant block can automatically fill after friction, thereby preventing the occurrence of The gap affects the operation of the dynamic ring body. Furthermore, when the wear-resistant block is exhausted by friction, the shift block is moved to drive the blocking block to separate from the inner wall of the static ring body. Since there is no support from the blocking block and there are remaining blocks of the wear-resistant block above, the mounting plate and the second connecting rod are rotated downward under the force of gravity, thereby separating the wear-resistant block, taking out the new wear-resistant block, and placing it inside the static ring body. After that, the mounting plate is rotated so that the top of the mounting plate contacts the bottom of the wear-resistant block. Then, the shift block is moved to make the blocking block located at the bottom of the mounting plate to support the mounting plate and then fix its own position, so as to achieve the purpose of facilitating the device to automatically compensate and replace the wear-resistant blocks that have been used for a long time.

[0017] The present invention cooperates with structures such as the mounting seat, the limit column, and the mounting plate so that when the device needs to install the wear-resistant block, the stop block is pressed to move to the position of the mounting groove. After the mounting plate contacts the limit block, the limit block and the third connecting rod are retracted inwardly through the shape of the device and the limit block. When the mounting plate completely passes through the limit block, the third supporting spring resets the third connecting rod and the limit block, making them close to the larger end of the mounting plate, and at this time the second supporting spring also contacts the mounting plate, so that the position of the mounting plate can stay there more stably, thereby fixing the position of the stop block. When the wear-resistant block needs to be replaced, the stop block is continued to be pressed to move to the position of the mounting groove. At this time, the limit block will lift the limit plate when it contacts the limit plate, so that the limit plate and the mounting plate contact each other. Since the diameter of the limit plate is larger than the diameter of the mounting plate, the stop block is pulled to move in the opposite direction at this time, and the limit block will be reset to the slope of the mounting plate, thereby not limiting the mounting plate, thereby achieving the purpose of facilitating the device to fix the position of the stop block and quickly disengage and then replace the wear-resistant block.

[0018] The present invention arranges the fourth connecting rod, the connecting seat, the threaded strip and other structures to cooperate, so that when the device is installing the moving ring body and the grinding roller, after the centers of the moving ring body and the grinding roller are aligned, the rotating connecting seat drives the fourth connecting rod and the threaded strip to rotate, so that when the threaded strip rotates, it can drive the limit screw to move through its own shape, so that the limit screw is inserted into the connecting groove of the grinding roller, and then the moving ring body is connected to the grinding roller, so as to achieve the purpose of facilitating the device to be firmly and stably installed on the grinding roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front cross-sectional structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the structure of the limiting mechanism of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of the local section at point A in the middle; Figure 5 It is a schematic diagram of the disassembly and assembly mechanism structure of the present invention; Figure 6 This is a schematic structural diagram of the disassembly and assembly mechanism of the present invention in an installed state; Figure 7 This is a schematic diagram of the structure of the limit mechanism of the present invention in an open state; Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of the local section at point B in the middle.

[0020] In the figure: 1. static ring body; 2. dynamic ring body; 3. static ring connecting block; 4. contact seam; 5. limiting mechanism; 501. first connecting rod; 502. first supporting spring; 503. extrusion block; 504. wear-resistant block; 505. mounting plate; 506. second connecting rod; 507. blocking block; 508. shifting block; 6. disassembly and assembly mechanism; 601. mounting seat; 602. limiting column; 603. mounting plate; 604. limiting plate; 605. mounting groove; 606. second supporting spring; 607. third connecting rod; 608. third supporting spring; 609. limiting block; 7. connecting mechanism; 701. fourth connecting rod; 702. connecting seat; 703. threaded strip; 704. limiting screw; 705. storage groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 creative work are within the scope of protection of the present invention.

[0022] like Figures 1 to 8 As shown, the present invention provides a moving and stationary ring installation structure of a medium-speed coal mill, comprising a stationary ring main body 1, a moving ring main body 2 is installed inside the stationary ring main body 1, a stationary ring connecting block 3 is fixed outside the stationary ring main body 1, a contact seam 4 is arranged inside the stationary ring main body 1, a limiting mechanism 5 is installed at the top of the stationary ring main body 1, a disassembly mechanism 6 is installed inside the stationary ring main body 1, and a connecting mechanism 7 is installed at the top of the moving ring main body 2.

[0023] like Figures 1 to 8 As shown, the limiting mechanism 5 includes a first connecting rod 501, a first supporting spring 502 and an extrusion block 503. The first connecting rod 501 is slidably connected to the inside of the stationary ring body 1. The outer wall of the first connecting rod 501 is sleeved with the first supporting spring 502. The bottom end of the first connecting rod 501 is fixed with an extrusion block 503. The inside of the stationary ring body 1 is slidably connected with a wear-resistant block 504. The first connecting rod 501 is provided with several groups. The first connecting rods 501 are evenly spaced about the central axis of the stationary ring body 1. The first supporting spring 502 is used to extrude the first connecting rod 501 and keep it moving downward. The contact surfaces of the extrusion block 503 and the wear-resistant block 504 have the same bevel angle.

[0024] like Figures 1 to 8As shown, the interior of the stationary ring body 1 is movably connected with a second connecting rod 506, the outer wall of the second connecting rod 506 is fixed with a mounting plate 505, a blocking block 507 is arranged inside the stationary ring body 1, a shift block 508 is fixed to the bottom end of the blocking block 507, the outer wall of the wear-resistant block 504 is close to the outer wall of the dynamic ring body 2, the outer wall of the blocking block 507 is close to the inner wall of the stationary ring body 1, the blocking block 507 and the stationary ring body 1 are slidably connected, and a plurality of anti-slip grooves are provided on the surface of the shift block 508, and the anti-slip grooves are evenly spaced about the central axis of the shift block 508.

[0025] The above scheme is adopted: by installing the wear-resistant block 504 between the static ring body 1 and the dynamic ring body 2, and squeezing the first connecting rod 501 and the squeezing block 503 through the first supporting spring 502, so that when the squeezing block 503 contacts the wear-resistant block 504 through its own shape, it can drive the wear-resistant block 504 to move toward the central axis position of the dynamic ring body 2, so that the wear-resistant block 504 contacts the outer wall of the dynamic ring body 2, and because the wear-resistant block 504 has higher wear resistance, the dynamic ring body 2 will first contact the wear-resistant block 504 when it moves, so that the dynamic ring body 2 can operate normally, and because the wear-resistant block 504 can move in the direction close to the dynamic ring body 2, the wear-resistant block 504 can automatically fill the gap after friction to prevent the formation of gaps. The operation of the dynamic ring body 2 is affected. Furthermore, when the wear-resistant block 504 is exhausted by friction, the shift block 508 is moved to drive the blocking block 507 to disengage from the inner wall of the static ring body 1. Since there is no support from the blocking block 507 and there is a remaining block of the wear-resistant block 504 above, the mounting plate 505 and the second connecting rod 506 are rotated downward under the force of gravity, thereby disengaging the wear-resistant block 504. After taking out a new wear-resistant block 504 and placing it inside the static ring body 1, the mounting plate 505 is rotated so that the top end of the mounting plate 505 contacts the bottom end of the wear-resistant block 504. Then, the shift block 508 is moved to make the blocking block 507 located at the bottom end of the mounting plate 505 to support the mounting plate 505 and fix its own position.

[0026] like Figures 1 to 8 As shown, the disassembly and assembly mechanism 6 includes a mounting seat 601, a limiting column 602 and a mounting plate 603. The mounting seat 601 is fixed to the outside of the blocking block 507. The limiting column 602 is fixed to the outside of the mounting seat 601. The mounting plate 603 is fixed to the outside of the limiting column 602. The limiting column 602 is sleeved with a limiting plate 604 on the outside. The mounting seat 601 is provided with two groups. The mounting seat 601 is symmetrically distributed about the central axis of the blocking block 507. The inner wall of the limiting plate 604 is close to the outer wall of the limiting column 602. The limiting plate 604 and the limiting column 602 are slidably connected. The diameter of the limiting plate 604 is larger than the diameter of the mounting plate 603.

[0027] like Figures 1 to 8As shown, a mounting groove 605 is opened inside the static ring body 1, and a second supporting spring 606 is fixed inside the mounting groove 605. Two groups of mounting grooves 605 are arranged, and the mounting grooves 605 are symmetrically distributed about the central axis of the blocking block 507. The second supporting spring 606 is used to squeeze the mounting disk 603 and keep it moving toward the central axis of the static ring body 1.

[0028] like Figures 1 to 8 As shown, the inner wall of the static ring body 1 is provided with a third connecting rod 607, and two groups of the third connecting rod 607 are provided. The third connecting rod 607 is symmetrically distributed about the central axis of the mounting groove 605, and the outer wall of the third connecting rod 607 is close to the inner wall of the static ring body 1. The third connecting rod 607 and the static ring body 1 are slidably connected. The outer wall of the third connecting rod 607 is sleeved with a third supporting spring 608, and a limiting block 609 is fixed on the outer wall of the third connecting rod 607. The diameter of the third supporting spring 608 is larger than the diameter of the third connecting rod 607, and the third supporting spring 608 is used to squeeze the third connecting rod 607 and keep it moving toward the central axis of the mounting groove 605.

[0029] The above scheme is adopted: when the wear-resistant block 504 needs to be installed, the blocking block 507 is pressed to move to the position of the installation groove 605, so that after the installation disk 603 contacts the limit block 609, the limit block 609 and the third connecting rod 607 are retracted inwardly through the shape of the limit block 609. When the installation disk 603 completely passes through the limit block 609, the third supporting spring 608 resets the third connecting rod 607 and the limit block 609 to make it close to the larger end of the installation disk 603, and at this time the second supporting spring 606 will also contact the installation disk 603, so that the installation The position of the disk 603 can stay here more stably, thereby fixing the position of the blocking block 507. When the wear-resistant block 504 needs to be replaced, continue to press the blocking block 507 to move it to the position of the installation groove 605. At this time, the limit block 609 will lift the limit disk 604 when it contacts the limit disk 604, so that the limit disk 604 and the installation disk 603 are in contact. Since the diameter of the limit disk 604 is larger than the diameter of the installation disk 603, at this time, pull the blocking block 507 to move in the opposite direction, and the limit block 609 will reset to the slope of the installation disk 603, and will not limit the installation disk 603.

[0030] like Figures 1 to 8As shown, the connecting mechanism 7 includes a fourth connecting rod 701, a connecting seat 702 and a threaded strip 703. The fourth connecting rod 701 is movably connected to the inside of the moving ring body 2. The connecting seat 702 is fixed to the top of the fourth connecting rod 701. A threaded strip 703 is arranged at one end of the fourth connecting rod 701. A receiving groove 705 is opened inside the moving ring body 2. A limiting screw 704 is arranged inside the receiving groove 705. The outer wall of the limiting screw 704 is close to the inner wall of the receiving groove 705. The limiting screw 704 and the receiving groove 705 are slidably connected. The outer wall of the limiting screw 704 is provided with several groups of threads. The limiting screw 704 and the threaded strip 703 are meshingly connected.

[0031] The above scheme is adopted: when the moving ring body 2 and the grinding roller are installed, the moving ring body 2 and the grinding roller are aligned with each other, and the rotating connecting seat 702 drives the fourth connecting rod 701 and the threaded bar 703 to rotate, so that the threaded bar 703 can drive the limiting screw 704 to move through its own shape when rotating, so that the limiting screw 704 is inserted into the connecting groove of the grinding roller, thereby connecting the moving ring body 2 with the grinding roller.

[0032] The working principle and use process of the present invention are as follows: by installing the wear-resistant block 504 between the static ring body 1 and the dynamic ring body 2, and squeezing the first connecting rod 501 and the squeezing block 503 through the first supporting spring 502, when the squeezing block 503 contacts the wear-resistant block 504 through its own shape, it can drive the wear-resistant block 504 to move toward the central axis position of the dynamic ring body 2, so that the wear-resistant block 504 contacts the outer wall of the dynamic ring body 2, and because the wear-resistant block 504 has higher wear resistance, the dynamic ring body 2 will first contact the wear-resistant block 504 when it moves, so that the dynamic ring body 2 can operate normally, and because the wear-resistant block 504 can move in the direction close to the dynamic ring body 2, the wear-resistant block 504 can automatically fill the gap after friction to prevent the dynamic ring body from being damaged. 2, further, when the wear-resistant block 504 is exhausted by friction, the shifting block 508 is moved to drive the blocking block 507 to be separated from the inner wall of the static ring body 1. Due to the lack of support from the blocking block 507 and the presence of the remaining block of the wear-resistant block 504 above, the mounting plate 505 and the second connecting rod 506 are rotated downward by gravity, thereby separating the wear-resistant block 504, taking out a new wear-resistant block 504, placing it inside the static ring body 1, rotating the mounting plate 505 so that the top of the mounting plate 505 contacts the bottom of the wear-resistant block 504, and then shifting the shifting block 508 so that the blocking block 507 is located at the bottom of the mounting plate 505 to support the mounting plate 505 and fix its own position. , pressing the blocking block 507 to move to the position of the installation groove 605, so that the installation plate 603 contacts the limit block 609, and through the shape of itself and the limit block 609, the limit block 609 and the third connecting rod 607 are retracted inwardly. When the installation plate 603 completely passes the limit block 609, the third supporting spring 608 resets the third connecting rod 607 and the limit block 609 to make it close to the larger end of the installation plate 603, and at this time the second supporting spring 606 will also contact the installation plate 603, so that the position of the installation plate 603 can stay here more stably, thereby fixing the position of the blocking block 507. When it is necessary to replace the wear-resistant block 504, continue to press the blocking block 507 to move it to the position of the installation groove 605. At this time, the limit block 60 When 9 contacts the limit plate 604, the limit plate 604 will be lifted, so that the limit plate 604 and the mounting plate 603 are in contact. Since the diameter of the limit plate 604 is larger than the diameter of the mounting plate 603, the blocking block 507 is pulled to move in the opposite direction, and the limit block 609 will be reset to the slope of the mounting plate 603, and the mounting plate 603 will not be limited. Through the device, when the moving ring body 2 and the grinding roller are installed, the moving ring body 2 and the center of the grinding roller are aligned, and the rotating connecting seat 702 drives the fourth connecting rod 701 and the threaded strip 703 to rotate, so that the threaded strip 703 can drive the limit screw 704 to move through its own shape when rotating, so that the limit screw 704 is inserted into the connecting groove of the grinding roller, and then the moving ring body 2 is connected to the grinding roller.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medium-speed coal mill moving and stationary ring mounting structure, comprising a stationary ring body (1), characterized in that: A dynamic ring body (2) is installed inside the static ring body (1), a static ring connecting block (3) is fixed outside the static ring body (1), a contact seam (4) is provided inside the static ring body (1), a limiting mechanism (5) is installed at the top of the static ring body (1), a disassembly mechanism (6) is installed inside the static ring body (1), and a connecting mechanism (7) is installed at the top of the dynamic ring body (2); The limiting mechanism (5) comprises a first connecting rod (501), a first supporting spring (502) and an extrusion block (503); the first connecting rod (501) is slidably connected to the interior of the stationary ring body (1); the outer wall of the first connecting rod (501) is sleeved with the first supporting spring (502); the bottom end of the first connecting rod (501) is fixed with the extrusion block (503); the interior of the stationary ring body (1) is slidably connected with a wear-resistant block (504); the interior of the stationary ring body (1) is movably connected with a second connecting rod (506); the outer wall of the second connecting rod (506) is fixed with a mounting plate (505); the interior of the stationary ring body (1) is provided with a blocking block (507); the bottom end of the blocking block (507) is fixed with a shifting block (508).

2. The installation structure of the moving and stationary rings of the medium-speed coal mill according to claim 1 is characterized in that: The first connecting rods (501) are provided in a plurality of groups. The first connecting rods (501) are distributed at equal intervals about the central axis of the stationary ring body (1). The first supporting springs (502) are used to squeeze the first connecting rods (501) and keep them moving downward. The contact surfaces of the squeezing block (503) and the wear-resistant block (504) have the same chamfer angle.

3. The installation structure of the moving and stationary rings of the medium-speed coal mill according to claim 1 is characterized in that: The outer wall of the wear-resistant block (504) is close to the outer wall of the dynamic ring body (2), the outer wall of the blocking block (507) is close to the inner wall of the static ring body (1), the blocking block (507) and the static ring body (1) are slidably connected, and a plurality of groups of anti-slip grooves are provided on the surface of the shifting block (508), and the anti-slip grooves are distributed at equal intervals about the central axis of the shifting block (508).

4. The installation structure of the moving and stationary rings of the medium-speed coal mill according to claim 1 is characterized in that: The disassembly and assembly mechanism (6) comprises a mounting seat (601), a limiting column (602) and a mounting plate (603); the mounting seat (601) is fixed to the outside of the blocking block (507); the limiting column (602) is fixed to the outside of the mounting seat (601); the mounting plate (603) is fixed to the outside of the limiting column (602); the limiting plate (604) is sleeved on the outside of the limiting column (602); a mounting groove (605) is provided inside the stationary ring body (1); a second supporting spring (606) is fixed inside the mounting groove (605); a third connecting rod (607) is provided on the inner wall of the stationary ring body (1); a third supporting spring (608) is sleeved on the outer wall of the third connecting rod (607); and a limiting block (609) is fixed on the outer wall of the third connecting rod (607).

5. The installation structure of the moving and stationary rings of the medium-speed coal mill according to claim 4 is characterized in that: The mounting seats (601) are provided in two groups. The mounting seats (601) are symmetrically distributed about the central axis of the blocking block (507). The inner wall of the limiting plate (604) is close to the outer wall of the limiting column (602). The limiting plate (604) and the limiting column (602) are slidably connected. The diameter of the limiting plate (604) is larger than the diameter of the mounting plate (603).

6. The installation structure for the moving and stationary rings of a medium-speed coal mill according to claim 4 is characterized in that: Two groups of the mounting grooves (605) are provided, and the mounting grooves (605) are symmetrically distributed about the central axis of the blocking block (507). The second supporting spring (606) is used to squeeze the mounting plate (603) and keep it moving towards the central axis of the stationary ring body (1).

7. The installation structure of the moving and stationary rings of the medium-speed coal mill according to claim 4 is characterized in that: Two groups of the third connecting rods (607) are provided. The third connecting rods (607) are symmetrically distributed about the central axis of the mounting groove (605). The outer walls of the third connecting rods (607) are close to the inner wall of the stationary ring body (1). The third connecting rods (607) and the stationary ring body (1) are slidably connected.

8. The installation structure of the moving and stationary rings of the medium-speed coal mill according to claim 4 is characterized in that: The diameter of the third support spring (608) is greater than the diameter of the third connecting rod (607), and the third support spring (608) is used to squeeze the third connecting rod (607) and keep it moving towards the central axis of the installation groove (605).

9. The installation structure of the moving and stationary rings of the medium-speed coal mill according to claim 1 is characterized in that: The connecting mechanism (7) comprises a fourth connecting rod (701), a connecting seat (702) and a threaded strip (703); the fourth connecting rod (701) is movably connected to the inside of the moving ring body (2); the connecting seat (702) is fixed to the top end of the fourth connecting rod (701); one end of the fourth connecting rod (701) is provided with a threaded strip (703); a receiving groove (705) is provided inside the moving ring body (2); a limiting screw (704) is provided inside the receiving groove (705).

10. The installation structure of the moving and stationary rings of the medium speed coal mill according to claim 9, characterized in that: The outer wall of the limiting screw (704) is close to the inner wall of the receiving groove (705), the limiting screw (704) and the receiving groove (705) are slidably connected, the outer wall of the limiting screw (704) is provided with a plurality of groups of threads, and the limiting screw (704) and the thread strip (703) are meshingly connected.

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