A grate seam structure for cement mill discharge grate plate and use method thereof

Abstract

The present invention relates to the technical field of cement mills, and specifically to a grate structure and a method of use for a grate plate for a cement mill discharge material, comprising a support plate, wherein a plurality of through openings are provided on the support plate. The grate structure and method of use for a grate plate for a cement mill discharge material, wherein a steel sheet is used to push an L-shaped angle plate to rotate upward in the grate, and during the relative deflection of two groups of L-shaped angle plates in a single grate, the hollow openings are used to pass through relative and staggered, and the fragments stuck in the grate are pushed out to the upper side. Compared with ejection by inserting a plate, the structure has the main driving components built into the grate plate, and the L-shaped angle plate can be used to push the fragments obliquely upward from both sides, thereby avoiding direct ejection of the fragments, reducing the recoil force on the L-shaped angle plate, and increasing the overall service life. The gradually intersecting L-shaped angle plates can ensure sufficient contact with the bottom of the fragments, so as to achieve comprehensive support for the fragments, and can effectively reduce the possibility of empty impact from the gap between the fragments.

Description

Technical Field

[0001] The invention relates to the technical field of cement mills, in particular to a grate seam structure for a cement mill discharge grate plate and a use method thereof. Background Art

[0002] The cement mill is a key equipment for crushing materials after they are broken, and the discharge grate is a kind of unloading device of the rotating part of the mill. After long-term grinding, there are many grinding bodies and their fragments that are close to the width of the grate gap, which are very easy to get stuck in the discharge grate gap. Since the grate has a certain thickness, it is difficult for these grinding bodies stuck in the grate gap to fall off. As time goes by, the discharge grate is blocked, which seriously affects the output and production effect of the cement mill. Most of the existing devices use vibration to reduce the blockage of the discharge grate, but because it applies overall vibration, the force transmitted to the grate gap is small, resulting in low anti-blockage effect, and the grate gap or grate hole will still be blocked.

[0003] The existing patent (publication number: CN111495563B) discloses a grate slit structure that reduces wear and resistance and ensures its anti-blocking effect by direct contact between the long-side straight roller, the short-side arc roller and the auxiliary grate plate. The main grate plate is provided with a grate slit, which is a rectangular slit, and the two ends of the grate slit are respectively provided with avoidance grooves, the inner wall of the avoidance groove is arched to form an arc scraping edge, and the arc scraping edge is provided with a clamping tooth, and the two short-side arcs are respectively placed in the two avoidance grooves, and the straightness of the short-side arc roller is The diameter gradually increases from the middle to both ends, the short side arc roller is circumferentially provided with arc sliding grooves, arc sliding teeth are formed between the arc sliding grooves, bristles are arranged on the arc sliding teeth, both sides of the grate gap are provided with clearance grooves, two connecting shafts are respectively placed in the two clearance grooves, the inner walls of the clearance grooves are provided with clamping teeth to form straight scraping edges, and the long side straight roller sleeve is placed on the connecting shaft, but the above-mentioned equipment mainly relies on the plug plate to directly push and block the fragments, which is easy to cause recoil damage, and the ejected fragments are easy to accumulate on the edge of the grate gap and quickly block back.

[0004] In view of this, we propose a grate seam structure and a use method for a cement mill discharge grate plate. Summary of the invention

[0005] The object of the present invention is to provide a grate structure and a method of use for a grate plate for cement mill discharge, so as to solve the problem proposed in the above background technology that the debris is easily blocked by directly pushing the plug plate, which is easy to cause recoil damage, and the ejected debris is easy to accumulate at the edge of the grate and quickly block it. In order to achieve the above purpose, the present invention provides the following technical solutions: A grate structure for a grate plate for cement mill discharge, comprising a support plate, the support plate is provided with a plurality of through openings, and the plurality of through openings are arranged in a ring array along the support plate, the top surface of the support plate is provided with a notch, and a plurality of grate plates corresponding to the through openings are fixedly installed in the notch by screws, the surface of the grate plate is provided with a plurality of grate slits, and the support plate, the grate plate and the grate slits are provided with anti-blocking structures.

[0006] Preferably, the anti-blocking structure includes two fan grooves opened along the long sides on opposite sides of the grate gap, and the side of the fan groove is connected to the grate gap, and the top of the fan groove is connected to the outside.

[0007] A metal rod is rotatably connected inside the fan groove, and an L-shaped angle plate adapted to the fan groove is fixedly sleeved on the surface of the metal rod.

[0008] A hollow opening is provided on the side of the L-shaped angle plate surface opposite to the comb seam, and the hollow openings on the surfaces of the two L-shaped angle plates are arranged in a staggered manner.

[0009] A sub-plate is arranged at the bottom of the grate plate, and a guide column is fixedly connected to the bottom of the support plate. The sub-plate is slidably connected along the guide column for a certain distance, and the sub-plate will not be separated from the guide column.

[0010] A tension spring is movably sleeved on the surface of the guide column, and two ends of the tension spring are respectively fixedly connected to the support plate and the auxiliary plate.

[0011] A servo motor is fixedly embedded in the middle of the sub-plate, and a cam seat is fixedly connected to the rotating shaft of the servo motor and the bottom of the support plate. The two cam seats are arranged opposite to each other, and when the cams on the two cam seats are staggered, the sub-plate can be pushed to move downward against the tension spring.

[0012] The top surface of the sub-plate is provided with a steel sheet corresponding to the metal rod, the bottom of the grate plate is provided with an L-shaped groove corresponding to the steel sheet, and the steel sheet is movably inserted into the L-shaped groove through the through opening, the end of the metal rod extends into the L-shaped groove, and the extended section of the metal rod is fixedly sleeved with a tooth head, the surface of the steel sheet is provided with a tooth groove that meshes with the tooth head, and when the steel sheet moves upward, the metal rod and the L-shaped angle plate are driven to rotate upward in the grate gap through the tooth groove.

[0013] The steel sheet and the auxiliary plate are connected via an adjusting piece.

[0014] Preferably, the adjusting member comprises a card holder fixedly mounted on the bottom of the steel sheet, a tube socket is fixedly connected to the surface of the card holder, a socket corresponding to the tube socket and the card holder is opened on the surface of the sub-plate, and the tube socket and the card holder are movably plugged into the socket.

[0015] A bolt is rotatably connected in the socket so as not to slide up and down. The bolt is threadedly connected in the pipe seat, and the bottom end of the bolt passes through the auxiliary plate and extends to the outside.

[0016] Preferably, a separation rib for separating adjacent grate plates is convexly provided on the inner bottom wall of the notch.

[0017] Preferably, the surface of the sub-plate is provided with an opening corresponding to the through opening, i.e. the grate seam.

[0018] Preferably, a protective cover is fixedly mounted on the bottom of the sub-plate along the servo motor.

[0019] Preferably, bristles that fit the fan grooves are fixedly installed on the edges of the L-shaped angle plate.

[0020] A method for using a grate seam structure for a cement mill discharge grate plate comprises the following steps:

[0021] S1. Install the auxiliary plate on the bottom of the support plate through the guide column, install the grate plate on the top of the support plate through screws, insert the steel sheet into the L-shaped groove to engage with the tooth head, and then install the entire equipment in the cement mill through the support plate.

[0022] S2. Cement mill materials are directly fed into the coarse grinding chamber of the mill by the feeding device and crushed under the impact of the grinding body. The materials crushed to a certain particle size are further screened by the fine screen plate in the combined partition plate. The coarse materials are screened out and returned to the coarse grinding chamber, while the materials smaller than the sieve size of the fine screen plate enter the fine grinding chamber for further grinding. The fine powder that meets the fineness requirement is discharged through the grate plate at the bottom of the fine grinding chamber.

[0023] The L-shaped angle plate is engaged with the tooth groove, and the steel sheet pushes the metal rod to rotate. At this time, the metal rod and the L-shaped angle plate rotate upward in the grate gap. During the relative deflection of the two groups of L-shaped angle plates in a single grate gap, the hollow openings are used to pass through relative staggered positions to push the embedded fragments in the grate gap upward. Compared with the ejection by the plug plate, this structure has the main driving components built into the grate plate, and the L-shaped angle plate can be used to push the fragments obliquely upward from both sides of the fragments, thereby avoiding direct impact on the fragments, reducing the recoil force on the L-shaped angle plate, and increasing the overall service life. The gradually intersecting L-shaped angle plates can ensure sufficient contact with the bottom of the fragments to achieve comprehensive lifting of the fragments, which can effectively reduce the possibility of empty impact from the gap between the fragments.

[0024] S4. The L-shaped angle plate that changes from a vertical horizontal state to an intersecting horizontal state can form a V-shaped angle, so as to clamp and crush the edges and corners of the fragments to a certain extent, reducing the possibility of subsequent fragments being blocked by the edges. The upward V-shaped clamping combined with the upward flicking of the L-shaped angle plate can clear the fragments in the grate gap while throwing the fragments outward and upward, making it easier for the fragments to contact the fine grinding parts of the cement mill, and also ensuring that the fragments are evenly dispersed to avoid rapid blockage by the cleared fragments.

[0025] S5. To meet the production needs of different particles, the operator can tighten the bolts along the bottom of the sub-plate to control the pipe seat and the bracket to move up along the socket. The bracket drives the steel sheet to be inserted into the L-shaped groove. The engagement of the tooth groove and the tooth head allows the steel sheet to push the metal rod to rotate. The metal rod and the L-shaped angle plate can be manually controlled to rotate upward in the grate gap, and the deflection of the two L-shaped angle plates relative to each other can be finely controlled. In this way, the change in the gap between the two L-shaped angle plates can be used to adjust the particle size that can pass through the grate gap. There is no need to disassemble and replace different grate plates. It is quick to adjust, easy to use, and reduces the number of grate plates of different models as accessories.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] In the present invention, a V-shaped angle is formed by the L-shaped angle plate that changes from a vertical horizontal state to an intersecting horizontal state, so that the edges and corners of the fragments are clamped and crushed to a certain extent, reducing the possibility of subsequent fragments being blocked by the edges. The upward V-shaped clamping combined with the upward flicking of the L-shaped angle plate can simultaneously clear out the fragments in the grate gap and scatter the fragments outward and upward, making it easier for the fragments to contact the fine grinding parts of the cement mill, and ensuring that the fragments are evenly dispersed, avoiding rapid back-blocking of the cleared fragments.

[0028] In the present invention, the steel sheet pushes the metal rod to rotate through the meshing of the tooth grooves and the tooth heads. At this time, the metal rod and the L-shaped angle plate rotate upward in the grate gap. During the relative deflection of the two groups of L-shaped angle plates in a single grate gap, the hollow openings are used to pass through relatively and staggered, so that the fragments stuck in the grate gap are pushed out to the upper side. Compared with the use of plug-in plates to push out, this structure has the main driving components built into the grate plate, and the L-shaped angle plate can be used to push the fragments obliquely upward from both sides, avoiding direct impact on the fragments, reducing the recoil force on the L-shaped angle plate, and increasing the overall service life. The gradually intersecting L-shaped angle plates can ensure sufficient contact with the bottom of the fragments, so as to achieve comprehensive support for the fragments, which can effectively reduce the possibility of empty impact from the gaps between the fragments.

[0029] In the present invention, the bolts are screwed along the bottom of the sub-plate to control the pipe seat and the bracket to move upward along the socket, and the bracket drives the steel sheet to be inserted into the L-shaped groove. The meshing of the tooth groove and the tooth head enables the steel sheet to push the metal rod to rotate, so that the metal rod and the L-shaped angle plate can be manually controlled to rotate upward in the grate gap, and the deflection amount of the two L-shaped angle plates relative to each other can be finely controlled. In this way, the change in the gap between the two L-shaped angle plates can be used to adjust the passable particle size of the grate gap. There is no need to disassemble and replace different grate plates, which can be quickly adjusted and used easily, and reduces the number of grate plates of different models as accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from a bottom-up perspective;

[0032] Figure 3 It is a front view of the present invention;

[0033] Figure 4 It is a partial exploded view of the present invention;

[0034] Figure 5 It is a schematic diagram of the three-dimensional structure of the anti-blocking structure of the present invention;

[0035] Figure 6 For the present invention Figure 5 Exploded diagram of

[0036] Figure 7 For the present invention Figure 6 The enlarged view of point A in the middle;

[0037] Figure 8 It is a structural schematic diagram of the adjusting member of the present invention;

[0038] Fig. 9 It is a structural schematic diagram of the cam seat of the present invention.

[0039] In the figure: 1. support plate; 2. through opening; 3. notch; 4. grate plate; 5. grate gap; 6. anti-blocking structure; 61. fan groove; 62. metal rod; 63. L-shaped angle plate; 64. hollow opening; 65. sub-plate; 66. guide column; 67. tension spring; 68. servo motor; 69. steel sheet; 610. L-shaped groove; 611. tooth head; 612. tooth groove; 613. cam seat; 614. adjusting piece; 6141. bracket; 6142. pipe seat; 6143. socket; 6144. bolt. DETAILED DESCRIPTION

[0040] 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 technical staff in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figures 1 to 9 The present invention provides a technical solution: a grate seam structure for a cement mill discharge grate plate, comprising a support plate 1, a plurality of through openings 2 being provided on the support plate 1, and the plurality of through openings 2 being arranged in a ring array along the support plate 1, a notch 3 being provided on the top surface of the support plate 1, and a plurality of grate plates 4 corresponding to the through openings 2 being fixedly installed in the notch 3 by screws, a plurality of grate seams 5 being provided on the surface of the grate plate 4, the installation of the whole device in the cement mill is realized through the support plate 1, and an anti-blocking structure 6 is provided on the support plate 1, the grate plate 4 and the grate seam 5.

[0042] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, the anti-blocking structure 6 includes two fan grooves 61 opened along the long sides of the grate gap 5 on opposite sides, and the side of the fan groove 61 is connected to the grate gap 5, and the top of the fan groove 61 is connected to the outside;

[0043] A metal rod 62 is rotatably connected inside the fan groove 61, and an L-shaped angle plate 63 adapted to the fan groove 61 is fixedly sleeved on the surface of the metal rod 62;

[0044] A hollow opening 64 is provided on the surface of the L-shaped angle plate 63 on one side opposite to the comb gap 5, and the hollow openings 64 on the surfaces of the two L-shaped angle plates 63 are arranged in a staggered manner, so that the two groups of L-shaped angle plates 63 in a single comb gap 5 are staggered through the hollow openings 64 during the relative deflection process;

[0045] A sub-plate 65 is provided at the bottom of the grate plate 4, and a guide column 66 is fixedly connected to the bottom of the support plate 1. The sub-plate 65 is slidably connected along the guide column 66 for a certain distance, and the sub-plate 65 will not be separated from the guide column 66;

[0046] A tension spring 67 is movably sleeved on the surface of the guide column 66, and the two ends of the tension spring 67 are respectively fixedly connected to the support plate 1 and the auxiliary plate 65. The tension spring 67 normally pulls the auxiliary plate 65 to move toward the support plate 1, and the servo motor 68 drives the corresponding cam seat 613 to rotate. The two cam seats 613 use the cams to counteract each other and staggered to cooperate with the tension spring 67 to control the reciprocating up and down displacement of the auxiliary plate 65;

[0047] A servo motor 68 is fixedly embedded in the middle of the sub-plate 65, and a cam seat 613 is fixedly connected to the rotating shaft of the servo motor 68 and the bottom of the support plate 1. The two cam seats 613 are arranged opposite to each other, and when the cams on the two cam seats 613 are staggered, the sub-plate 65 can be pushed to move downward against the tension spring 67;

[0048] The top surface of the auxiliary plate 65 is provided with a steel sheet 69 corresponding to the metal rod 62, and the bottom of the grate plate 4 is provided with an L-shaped groove 610 corresponding to the steel sheet 69, and the steel sheet 69 passes through the through opening 2 and is movably inserted in the L-shaped groove 610, the end of the metal rod 62 extends into the L-shaped groove 610, and the extended section of the metal rod 62 is fixedly sleeved with a tooth head 611, and the surface of the steel sheet 69 is provided with a tooth groove 612 that meshes with the tooth head 611, and when the steel sheet 69 moves upward, the metal rod 62 and the L-shaped angle plate 63 are driven to rotate upward in the grate gap 5 through the tooth groove 612, and the steel sheet 69 is inserted into the L-shaped groove 610, and the meshing of the tooth groove 612 and the tooth head 611 makes the steel sheet 69 push the metal rod 62 to rotate, and at this time, the metal rod 62 and the L-shaped angle plate 63 rotate upward in the grate gap 5;

[0049] The steel sheet 69 and the auxiliary plate 65 are connected via an adjusting member 614 .

[0050] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, the adjusting member 614 includes a bracket 6141 fixedly mounted on the bottom of the steel sheet 69, a tube seat 6142 is fixedly connected to the surface of the bracket 6141, a socket 6143 corresponding to the tube seat 6142 and the bracket 6141 is opened on the surface of the sub-plate 65, and the tube seat 6142 and the bracket 6141 are movably plugged into the socket 6143;

[0051] A bolt 6144 is connected in the socket 6143 in a rotatable manner that cannot slide up and down. The bolt 6144 is threadedly connected in the pipe seat 6142, and the bottom end of the bolt 6144 extends to the outside through the sub-plate 65. Twisting the bolt 6144 can control the pipe seat 6142 and the bracket 6141 to move upward along the socket 6143, and the bracket 6141 drives the steel sheet 69 to be inserted into the L-shaped groove 610. Through the engagement of the tooth groove 612 and the tooth head 611, the steel sheet 69 pushes the metal rod 62 to rotate, and the metal rod 62 and the L-shaped angle plate 63 can be manually controlled to rotate upward in the grate seam 5.

[0052] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, a separation rib for separating adjacent grate plates 4 is convexly provided on the inner bottom wall of the notch 3, which facilitates the corresponding installation of the grate plates 4 on the one hand, and prevents the vibration of the grate plates 4 from being transmitted to each other during use, resulting in loose installation on the other hand.

[0053] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, the surface of the sub-plate 65 is provided with an opening corresponding to the through opening 2, i.e., the grate gap 5.

[0054] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, a protective cover is fixedly installed along the servo motor 68 at the bottom of the auxiliary plate 65, which can provide a certain protection effect for the servo motor 68 and reduce the possibility of damage caused by impact of material particles.

[0055] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, bristles that fit the fan groove 61 are fixedly installed on the edge of the L-shaped angle plate 63, which can effectively reduce the situation where material particles are embedded between the fan groove 61 and the L-shaped angle plate 63, thereby reducing operation interference.

[0056] A method for using a grate seam structure for a cement mill discharge grate plate comprises the following steps:

[0057] S1, install the auxiliary plate 65 on the bottom of the support plate 1 through the guide column 66, install the grate plate 4 on the top of the support plate 1 through screws, insert the steel sheet 69 into the L-shaped groove 610 and mesh with the tooth head 611, and then install the whole device in the cement mill through the support plate 1;

[0058] S2, cement mill materials are directly fed into the coarse grinding chamber of the mill by the feeding device, and are crushed under the impact of the grinding body. The materials crushed to a certain particle size are further screened by the fine screen plate in the combined partition plate. The coarse materials are screened out and returned to the coarse grinding chamber, while the materials smaller than the sieve size of the fine screen plate enter the fine grinding chamber for further grinding. The fine powder that meets the fineness requirement is discharged through the grate plate 4 at the bottom of the fine grinding chamber;

[0059] S3. During the discharging process of the above-mentioned grate plate 4, the servo motor 68 drives the corresponding cam seat 613 to rotate. The two cam seats 613 use the cams to counteract each other and the offset tension spring 67 to control the reciprocating up and down displacement of the sub-plate 65. When the sub-plate 65 moves up, it drives the steel sheet 69 to insert into the L-shaped groove 610. The steel sheet 69 pushes the metal rod 62 to rotate through the meshing of the tooth groove 612 and the tooth head 611. At this time, the metal rod 62 and the L-shaped angle plate 63 rotate upward in the grate gap 5. During the relative deflection of the two groups of L-shaped angle plates 63 in a single grate gap 5, The hollow openings 64 are staggered to pass through relatively, and the fragments stuck in the grate gap 5 are pushed out to the upper side. Compared with the ejection by the plug plate, this structure sets the main driving components in the grate plate 4, and can use the L-shaped angle plate 63 to push the fragments obliquely upward from both sides, avoiding direct top impact on the fragments, reducing the recoil force on the L-shaped angle plate 63, and improving the overall service life. The gradually intersecting L-shaped angle plate 63 can ensure full contact with the bottom of the fragments, so as to achieve comprehensive lifting of the fragments, which can effectively reduce the possibility of empty impact from the gap between the fragments;

[0060] S4, the L-shaped angle plate 63 that changes from a vertical horizontal state to an intersecting horizontal state can form a V-shaped angle, so as to clamp and crush the edges and corners of the fragments to a certain extent, reducing the possibility of subsequent fragments being blocked by the edges, and the upward V-shaped clamping and the upward flicking of the L-shaped angle plate 63 can clear the fragments in the grate gap 5 while throwing the fragments outward and upward, making it easier for the fragments to contact the fine grinding parts of the cement mill, and also ensuring that the fragments are evenly dispersed, avoiding the cleared fragments from quickly blocking;

[0061] S5. In response to production needs of different particles, the operator can tighten the bolt 6144 along the bottom of the sub-plate 65 to control the pipe seat 6142 and the bracket 6141 to move up along the socket 6143. The bracket 6141 drives the steel sheet 69 to be inserted into the L-shaped groove 610. The engagement of the tooth groove 612 with the tooth head 611 allows the steel sheet 69 to push the metal rod 62 to rotate. The metal rod 62 and the L-shaped angle plate 63 can be manually controlled to rotate upward in the grate gap 5, and the deflection amount of the two L-shaped angle plates 63 relative to each other can be finely controlled. In this way, the change in the gap between the two L-shaped angle plates 63 can be used to adjust the particle size that can pass through the grate gap 5. There is no need to disassemble and replace different grate plates 4. The adjustment is quick and easy to use, and different types of grate plates 4 are reduced as accessories.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A grate slit structure for a grate plate for cement mill discharge, comprising a support plate (1), the support plate (1) being provided with a plurality of through openings (2), and the plurality of through openings (2) being arranged in a ring array along the support plate (1), a top surface of the support plate (1) being provided with a notch (3), and a plurality of grate plates (4) corresponding to the through openings (2) being fixedly mounted in the notch (3) by screws, a plurality of grate slits (5) being provided on the surface of the grate plate (4), characterized in that: The support plate (1), the grate plate (4) and the grate gap (5) are provided with an anti-blocking structure (6); The anti-blocking structure (6) comprises two fan grooves (61) formed along the long sides of the grate slit (5) on opposite sides, and the side portions of the fan grooves (61) are in communication with the grate slit (5), and the top portions of the fan grooves (61) are in communication with the outside; A metal rod (62) is rotatably connected inside the fan groove (61), and an L-shaped angle plate (63) adapted to the fan groove (61) is fixedly sleeved on the surface of the metal rod (62); A hollow opening (64) is provided on a side of the surface of the L-shaped angle plate (63) opposite to the comb seam (5), and the hollow openings (64) on the surfaces of the two L-shaped angle plates (63) are arranged in a staggered manner; A sub-plate (65) is provided at the bottom of the grate plate (4), and a guide column (66) is fixedly connected to the bottom of the support plate (1), the sub-plate (65) is slidably connected along the guide column (66) for a certain distance, and the sub-plate (65) will not detach from the guide column (66); A tension spring (67) is movably sleeved on the surface of the guide column (66), and two ends of the tension spring (67) are respectively fixedly connected to the support plate (1) and the auxiliary plate (65); A servo motor (68) is fixedly embedded in the middle of the auxiliary plate (65), and a cam seat (613) is fixedly connected to the rotating shaft of the servo motor (68) and the bottom of the support plate (1), and the two cam seats (613) are arranged opposite to each other, and when the cams on the two cam seats (613) are staggered, the auxiliary plate (65) can be pushed to move downward against the tension spring (67); The top surface of the auxiliary plate (65) is provided with a steel sheet (69) corresponding to the metal rod (62); the bottom of the grate plate (4) is provided with an L-shaped groove (610) corresponding to the steel sheet (69); the steel sheet (69) passes through the through opening (2) and is movably inserted into the L-shaped groove (610); the end of the metal rod (62) extends into the L-shaped groove (610); the extension section of the metal rod (62) is fixedly sleeved with a tooth head (611); the surface of the steel sheet (69) is provided with a tooth groove (612) that meshes with the tooth head (611); and when the steel sheet (69) moves upward, the tooth groove (612) drives the metal rod (62) and the L-shaped angle plate (63) to rotate upward in the grate gap (5); The steel sheet (69) and the auxiliary plate (65) are connected via an adjusting member (614); The adjusting member (614) comprises a bracket (6141) fixedly mounted on the bottom of the steel sheet (69); a tube seat (6142) is fixedly connected to the surface of the bracket (6141); a socket (6143) corresponding to the tube seat (6142) and the bracket (6141) is formed on the surface of the sub-plate (65); and the tube seat (6142) and the bracket (6141) are movably plugged into the socket (6143); A bolt (6144) is rotatably connected in the socket (6143) so as to not slide up and down. The bolt (6144) is threadedly connected in the pipe seat (6142), and the bottom end of the bolt (6144) passes through the sub-plate (65) and extends to the outside.

2. The grate seam structure for a cement mill discharge grate plate according to claim 1, characterized in that: Separation ribs for separating adjacent grate plates (4) are convexly provided on the inner bottom wall of the notch (3).

3. The grate seam structure for a cement mill discharge grate plate according to claim 2, characterized in that: An opening corresponding to the through opening (2) is formed on the surface of the sub-plate (65).

4. The grate seam structure for a cement mill discharge grate plate according to claim 3, characterized in that: A protective cover is fixedly mounted on the bottom of the auxiliary plate (65) along the servo motor (68).

5. The grate seam structure for a cement mill discharge grate plate according to claim 4, characterized in that: Brush bristles that fit the fan groove (61) are fixedly mounted on the edge of the L-shaped angle plate (63).

6. A method for using the grate seam structure for a cement mill discharge grate plate according to claim 5, comprising the following steps: S1, installing the auxiliary plate (65) on the bottom of the support plate (1) through the guide column (66), installing the grate plate (4) on the top of the support plate (1) through screws, and inserting the steel sheet (69) into the L-shaped groove (610) to mesh with the tooth head (611), and then installing the entire grate seam structure in the cement mill through the support plate (1); S2, cement grinding materials are directly fed into the coarse grinding chamber of the grinding mill by the feeding device, and are crushed under the impact of the grinding body. The materials crushed to a certain particle size are further screened by the fine screen plate in the combined partition plate. The coarse materials are screened out and returned to the coarse grinding chamber, while the materials smaller than the sieve size of the fine screen plate enter the fine grinding chamber and are further ground. The fine powder that meets the fineness requirement is discharged through the grate plate (4) at the bottom of the fine grinding chamber; S3. During the discharging process of the grate plate (4), the servo motor (68) drives the corresponding cam seat (613) to rotate. The two cam seats (613) use the cams to counteract each other and the offset tension spring (67) to control the reciprocating up and down displacement of the auxiliary plate (65). When the auxiliary plate (65) moves upward, it drives the steel sheet (69) to be inserted into the L-shaped groove (610). Through the meshing of the tooth groove (612) and the tooth head (611), the steel sheet (69) pushes the metal rod (62) to rotate. At this time, the metal rod (62) and the L-shaped angle plate (63) rotate upward in the grate gap (5). The two groups of L-shaped angle plates (63) in the single grate gap (5) are 3) During the relative deflection process, the hollow openings (64) are used to cross each other to push the fragments stuck in the grate gap (5) upward. Compared with the method of ejecting the fragments by using the plug plate, the anti-blocking structure has the main driving components built into the grate plate (4), and the L-shaped angle plates (63) can be used to push the fragments obliquely upward from both sides, thereby avoiding direct impact on the fragments, reducing the recoil force on the L-shaped angle plates (63), and improving the overall service life. The gradually intersecting L-shaped angle plates (63) can ensure sufficient contact with the bottom of the fragments, so as to achieve comprehensive lifting of the fragments, and effectively reduce the possibility of empty impact from the gap between the fragments; S4. The L-shaped angle plate (63) that changes from a vertical horizontal state to an intersecting horizontal state can form a V-shaped angle, thereby clamping and crushing the edges and corners of the fragments to a certain extent, reducing the possibility of subsequent fragments being blocked by the edges, and the upward V-shaped clamping combined with the upward flicking of the L-shaped angle plate (63) can simultaneously clear out the fragments in the grate gap (5) and throw the fragments outward and upward, making it easier for the fragments to contact the fine grinding parts of the cement mill, and also ensuring that the fragments are evenly dispersed, avoiding the cleared fragments from quickly blocking the grate gap; S5. In response to production requirements of different particles, the operator can screw the bolt (6144) along the bottom of the auxiliary plate (65) to control the pipe seat (6142) and the bracket (6141) to move upward along the socket (6143). The bracket (6141) drives the steel sheet (69) to be inserted into the L-shaped groove (610). The meshing of the tooth groove (612) and the tooth head (611) causes the steel sheet (69) to push the metal rod (62) to rotate. The metal rod (62) and the L-shaped angle plate (63) can be manually controlled to rotate upward in the grate gap (5). The deflection amount relative to the two L-shaped angle plates (63) can be finely controlled. In this way, the particle size that can pass through the grate gap (5) can be adjusted by using the gap change between the two L-shaped angle plates (63). There is no need to disassemble and replace different grate plates (4). The adjustment is fast and convenient to use. Different types of grate plates (4) are reduced as accessories.

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