A cement raw material grinding equipment

Abstract

The present application provides a cement raw material grinding equipment, which belongs to the field of grinding technology, including a support plate, a first ball mill, a second ball mill, a third ball mill, steel balls, a screening mechanism and a rotating mechanism; the support plate is rotatably arranged at one end of the placement tube, the first ball mill, the second ball mill and the third ball mill are distributed in the placement tube in a triangular shape and are all rotatably connected to the support plate, and through holes are provided thereon, and a plurality of steel balls are divided into three specifications of minimum, medium and maximum according to the diameter size and are sequentially arranged in the first ball mill, the second ball mill and the third ball mill; the screening mechanism is used to screen the raw materials, and the raw materials of small, medium and large diameters are input into the first ball mill, the second ball mill and the third ball mill correspondingly; the rotating mechanism is used to drive the first ball mill, the second ball mill and the third ball mill to revolve around the center of the support plate and rotate around their own axis. The present application can improve the ball milling efficiency and effect of cement raw materials.

Description

Technical Field

[0001] The present application relates to the field of grinding technology, and in particular to a cement raw material grinding device. Background Art

[0002] Cement raw materials are the basic raw materials for cement production, which mainly include limestone, clay, iron ore and gypsum. In the process of cement production, since raw materials such as limestone are usually large in volume, in order to meet production requirements and improve mixing effects, various raw materials are usually crushed first, and then the crushed raw materials are mixed in a certain proportion and method, and then the mixed raw materials are ground to form raw material powder.

[0003] Referring to the Chinese patent document with announcement number CN118060015B, entitled A Cement Grinding Device and System, in the patent, a rotating frame and a motor are arranged on the frame, a ball mill is arranged on the rotating frame, the ball mill can be turned around the rotating frame, a plurality of ball milling steel balls are placed in the ball mill, during operation, the motor drives the rotating frame to rotate, and the rotation of the rotating frame drives the ball mill to rotate around its own axis, the rotation of the ball mill causes the ball milling steel balls to move inside the ball mill, and the cement raw material is ball milled. After the cement raw material is ball milled, the discharge port at the end of the ball mill is opened, the ball mill is turned around the rotating frame, and the discharge port is downward for discharge, the ball milling steel balls are stopped by the ball blocking column, the ball milled cement raw material passes through the ball blocking column and is screened through the sieve, and the cement raw material meeting the mesh number requirement is discharged from the discharge port.

[0004] Referring to the above technical scheme, when the cement raw material is ball-milled, due to the differences in the sizes of raw materials such as limestone after being crushed, when the ball-milling steel balls are ball-milling the crushed raw materials, if the ball-milling steel balls are too large, the small pieces of raw materials are not easy to contact with the ball-milling steel balls and be ball-milled, and if the ball-milling steel balls are too small, it takes a long time for the ball-milling steel balls to ball-mill the large pieces of raw materials to the appropriate size. Moreover, when the ball-milling steel balls are ball-milling the raw materials, the raw materials that are ball-milled to the appropriate size will accumulate in the ball mill tube, affecting the contact between the ball-milling steel balls and the raw materials, thereby reducing the ball-milling efficiency and effect of the cement raw material. Summary of the invention

[0005] In order to solve the technical problems of low efficiency and poor effect of cement raw meal ball grinding, the present application provides a cement raw meal grinding equipment.

[0006] The present application provides a cement raw material grinding device, which adopts the following technical scheme: a cement raw material grinding device, comprising a frame, a placement cylinder is horizontally arranged on the frame, and further comprising: a support plate, a first ball mill, a second ball mill, a third ball mill, steel balls, a screening mechanism and a rotating mechanism; the support plate is rotatably arranged at one end of the placement cylinder and can seal the end of the placement cylinder, the first ball mill, the second ball mill and the third ball mill are distributed in the placement cylinder in a triangular shape and are all rotatably connected to the support plate, and the side walls of the first ball mill, the second ball mill and the third ball mill are all provided with There are through holes for qualified raw materials to pass through, and multiple steel balls are arranged. The multiple steel balls are divided into three specifications of minimum, medium and maximum according to the diameter size and are arranged in the first ball mill, the second ball mill and the third ball mill in sequence; the screening mechanism is arranged on the support plate, the screening mechanism is used to screen the raw materials, and input the raw materials of small, medium and large diameters into the first ball mill, the second ball mill and the third ball mill accordingly; the rotating mechanism is arranged on the frame, and the rotating mechanism is used to drive the first ball mill, the second ball mill and the third ball mill to revolve around the center of the support plate and rotate around their own axis.

[0007] By adopting the above technical scheme, when the cement raw materials are ball-milled, the screening mechanism first screens the size of the raw materials, and then inputs the small, medium and large-sized cement raw materials into the first ball mill, the second ball mill and the third ball mill respectively. At the same time, the rotating mechanism drives the first ball mill, the second ball mill and the third ball mill to rotate around the center of the support plate and rotate around their own axes respectively, and the steel balls ball-mill the cement raw materials. Qualified raw materials flow out of the first ball mill, the second ball mill and the third ball mill through the through holes. The first ball mill, the second ball mill and the third ball mill revolve around the center of the support plate and rotate around their own axes respectively, which can increase the number of times the steel balls ball-mill the raw materials, which is beneficial to improving the ball milling efficiency.

[0008] In the present application, cement raw materials can be screened into small, medium and large sizes and respectively input into the first ball mill, the second ball mill and the third ball mill for ball milling. In the process of ball milling the cement raw materials with steel balls, qualified raw materials can be discharged, which can facilitate the ball milling of cement raw materials of different sizes by steel balls, reduce the obstruction of qualified raw materials to the ball milling of steel balls, reduce the time for ball milling raw materials, and reduce the risk of some unqualified raw materials gathering in qualified raw materials without being ball milled, which is beneficial to improving the ball milling efficiency and ball milling effect.

[0009] Optionally, the screening mechanism includes a first barrel, a second barrel and a third barrel fixedly connected to the support plate, the first barrel, the second barrel and the third barrel correspond one-to-one to the first ball mill, the second ball mill and the third ball mill and are rotatably connected, the first barrel is connected to a feed pipe, a filter screen for small diameter raw materials to pass through is fixedly connected to the first ball mill opposite to the feed pipe, a first connecting bin is arranged between the first barrel and the second barrel, the first barrel is provided with a first filter hole for medium diameter raw materials to pass through opposite to the first connecting bin, a second connecting bin is connected between the first barrel and the third barrel, a control component is arranged on the second connecting bin, and the control component is used to control the raw materials after small and medium diameter filtration to pass through the second connecting bin.

[0010] By adopting the above technical solution, when the raw materials are screened, under the action of the control component, the raw materials first enter the first barrel through the feed pipe and are filtered by the filter screen, the small-diameter raw materials enter the first ball mill through the filter screen, and the medium- and large-diameter raw materials are blocked by the filter screen. Subsequently, during the rotation of the first ball mill, the second ball mill and the third ball mill around the center of the support plate, the medium-diameter raw materials enter the second ball mill through the first filter hole, and the remaining large-diameter raw materials enter the third ball mill through the second connecting bin.

[0011] Optionally, the control component includes a third connecting bin arranged between the second connecting bin and the first connecting bin, and a second filter hole for allowing medium-diameter raw materials to pass through is opened on the side wall of the first connecting bin facing the third connecting bin, and a baffle is rotatably arranged at one end of the second connecting bin close to the feed pipe, and when the second barrel is not rotated upward, the baffle can isolate the second connecting bin and enable the third connecting bin to be connected with the feed pipe; when the second barrel is rotated upward, the baffle can connect the second connecting bin and the third connecting bin, and can isolate the first barrel from being connected with the second connecting bin and the third connecting bin.

[0012] By adopting the above technical solution, when the first ball mill, the second ball mill and the third ball mill rotate around the center of the support plate, the baffle separates the second connecting bin, and part of the raw materials enter the third connecting bin, wherein the medium-diameter raw materials pass through the second filter hole and enter the second ball mill; when the second ball mill rotates to the upper side, the baffle separates the third connecting bin and the second connecting bin from the first barrel, and connects the second connecting bin with the third connecting bin, and the filtered raw materials in the third connecting bin enter the third ball mill.

[0013] By rotating the third connecting bin and the baffle, the second connecting bin can always be separated from the feed pipe during the rotation of the first barrel, the second barrel and the third barrel to screen the small and medium diameter raw materials, and only the screened raw materials can enter the second connecting bin, thereby reducing the amount of small and medium diameter raw materials entering the third ball mill, which is beneficial to improving the ball milling speed and ball milling effect of the cement raw materials.

[0014] Optionally, the rotating mechanism includes a first gear arranged in the placing cylinder, a second gear is fixedly sleeved on the first ball milling cylinder, the second ball milling cylinder and the third ball milling cylinder, the first gear can mesh with the two second gears, an inner gear ring that can mesh with the second gears is fixedly connected to the inner side wall of the placing cylinder, and a rotating source that can drive the placing cylinder to rotate is installed on the frame.

[0015] By adopting the above technical solution, when the raw materials need to be ball-milled, the rotation source drives the placement barrel to rotate, and the qualified raw materials passing through the through hole can be mixed through the rotation of the placement barrel, thereby reducing the risk of uneven mixing of the raw materials and being beneficial to improving the reaction effect of subsequent raw materials; when the placement barrel rotates, it can drive the inner gear ring to rotate, and the inner gear ring engages with the second gear to drive the first ball mill barrel, the second ball mill barrel and the third ball mill barrel to rotate around the center of the support plate, and at the same time, the second gear engages with the first gear to make the first ball mill barrel, the second ball mill barrel and the third ball mill barrel rotate around their own axes respectively.

[0016] Optionally, the second ball mill and the third ball mill are both provided with a first support ring, the two first support rings are connected by a fourth connecting bin, the second ball mill and the third ball mill are provided with a third filter hole for medium-diameter raw materials to pass through corresponding to the first support ring, the first ball mill and the second ball mill are both provided with a second support ring, the two second support rings are connected by a fifth connecting bin, the first ball mill and the second ball mill are provided with a fourth filter hole for small-diameter raw materials to pass through corresponding to the second support ring, a limiting flow component is arranged in the placement barrel, the limiting flow component is used to make the fourth connecting bin and the fifth connecting bin unidirectionally conductive, wherein the first support ring and the second support ring are both located at one end away from the first barrel.

[0017] By adopting the above technical scheme, in the process of ball milling the raw materials with steel balls, the raw materials in the third ball mill can be ball milled into small and medium diameter raw materials, and the medium diameter raw materials in the second ball mill can be ball milled into small diameter raw materials. Under the action of the current limiting component, the small and medium diameter raw materials in the third ball mill enter the second ball mill chamber through the third filter hole during rotation, and the small diameter raw materials in the second ball mill enter the first ball mill through the fourth filter hole.

[0018] By arranging the first support ring, the fourth connecting chamber, the second support ring and the fifth connecting chamber, the raw materials ball-milled into small and medium diameters in the third ball mill can enter the second ball mill, and the raw materials ball-milled into small diameters in the second ball mill can enter the first ball mill, thereby facilitating the ball milling of raw materials of corresponding diameters by steel balls of different diameters, reducing the difficulty of ball milling the raw materials, facilitating the contact between the steel balls and the raw materials, and being beneficial to improving the ball milling effect and efficiency of the raw materials.

[0019] Optionally, the current limiting assembly includes a blocking plate and a torsion spring respectively arranged in the fourth connecting bin and the fifth connecting bin, the blocking plate is connected to the fourth connecting bin and the fifth connecting bin respectively through the torsion spring, and the fourth connecting bin and the fifth connecting bin are both fixedly connected with a block, which is respectively located at one end of the fourth connecting bin close to the third ball mill and one end of the fifth connecting bin close to the second ball mill.

[0020] By adopting the above technical scheme, when the third ball mill rotates to the upper part, the material located in the third ball mill can push the blocking plate located in the fourth connecting bin to rotate; when the second ball mill rotates to the upper part, the material located in the second ball mill can push the blocking plate located in the fifth connecting bin to rotate, and the baffle located in the fourth connecting bin can be blocked by the block to separate the fourth connecting bin; when the first ball mill rotates to the upper part, the baffle located in the fifth connecting bin can be blocked by the block to separate the fifth connecting bin.

[0021] Optionally, the inner hole diameter of the third ball mill gradually increases from one end of the third barrel to the first support ring, and the inner hole diameters of the first ball mill and the second ball mill gradually decrease from the middle to both ends.

[0022] By adopting the above technical scheme, the setting of gradually increasing the diameter of the third ball mill can increase the moving speed of the raw material in the third ball mill, making it convenient for the raw material that has been ball-milled to a small or medium diameter to quickly enter the second ball mill, which is beneficial to increasing the ball milling speed of the raw material; the setting of gradually decreasing the diameter of the first ball mill and the second ball mill from the middle to the two ends can reduce the risk of raw materials accumulating at both ends of the first ball mill and the second ball mill and blocking the feed, and facilitates the rapid dispersion and ball milling of the raw materials.

[0023] Optionally, a support plate is rotatably arranged in the placement cylinder, the first ball mill, the second ball mill and the third ball mill all pass through the support plate in a rotatable connection, and discharge ports are provided on both sides of the placement cylinder located on the support plate.

[0024] By adopting the above technical solution, the setting of the support plate can support the first ball mill, the second ball mill and the third ball mill, which is beneficial to improve the stability of the first ball mill, the second ball mill and the third ball mill, and the setting of the discharge port can facilitate the discharge of qualified raw materials.

[0025] Optionally, the filter screen is conical in shape, and the tip of the filter screen extends into the first ball mill.

[0026] By adopting the above technical solution, the conical setting of the filter can increase the filtration area and improve the filtration speed of the raw materials. At the same time, it can make the raw materials entering from the feed pipe first enter the filter and then be transported out of the filter during the filtration process, thereby reducing the risk of the raw materials directly entering the second ball mill without being filtered by the filter, which is beneficial to improving the filtration effect of the raw materials.

[0027] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0028] 1. In the present application, the cement raw materials can be screened into small, medium and large sizes and respectively input into the first ball mill, the second ball mill and the third ball mill for ball milling. In the process of ball milling the cement raw materials by steel balls, qualified raw materials can be discharged, which can not only facilitate the ball milling of cement raw materials of different sizes by steel balls, but also reduce the obstruction of qualified raw materials to the ball milling of steel balls, reduce the time of ball milling raw materials, and reduce the risk of some unqualified raw materials gathering in qualified raw materials without being ball milled, which is beneficial to improving the ball milling efficiency and ball milling effect.

[0029] 2. Through the rotation setting of the third connecting bin and the baffle, when the first barrel, the second barrel and the third barrel rotate and screen the small and medium diameter raw materials, the second connecting bin can always be separated from the feed pipe, and only the screened raw materials can enter the second connecting bin, which reduces the amount of small and medium diameter raw materials entering the third ball mill, which is beneficial to improve the ball milling speed and ball milling effect of cement raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0031] Figure 2 This is a schematic diagram of the structure of placing the inside of the cylinder in the embodiment of the present application;

[0032] Figure 3 This is a schematic diagram of the structure of the first filter hole in the embodiment of the present application;

[0033] Figure 4 This is a schematic diagram of the structure of the baffle in the embodiment of the present application;

[0034] Figure 5 This is a schematic diagram of the structure of the first support ring and the second support ring in the embodiment of the present application;

[0035] Figure 6 It is a schematic diagram of the structure of the blocking plate in the embodiment of the present application.

[0036] Description of reference numerals: 1, frame; 2, placement cylinder; 21, support plate; 22, first ball mill; 221, fourth filter hole; 23, second ball mill; 231, third filter hole; 24, third ball mill; 241, through hole; 25, discharge port; 3, screening mechanism; 31, first barrel; 311, feed pipe; 312, first filter hole; 32, second barrel; 33, third barrel; 34, filter screen; 35, first A connecting chamber; 351, a second filter hole; 36, a second connecting chamber; 37, a control component; 371, a third connecting chamber; 372, a baffle; 4, a rotating mechanism; 41, a first gear; 42, a second gear; 43, an inner gear ring; 44, a rotating source; 5, a first supporting ring; 51, a fourth connecting chamber; 6, a second supporting ring; 61, a fifth connecting chamber; 7, a current limiting component; 71, a blocking plate; 72, a block; 8, a supporting plate. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 6 , the technical solutions of the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0038] Reference Figure 1 and Figure 2 A cement raw material grinding device comprises a frame 1, a placing cylinder 2, a support plate 21, a first ball mill 22, a second ball mill 23, a third ball mill 24, steel balls, a screening mechanism 3 and a rotating mechanism 4. The placing cylinder 2 is a hollow cylinder with openings at both ends and an axis extending horizontally. The placing cylinder 2 is rotatably connected to the frame 1. Two support plates 21 are provided, and the two support plates 21 are rotatably arranged at both ends of the placing cylinder 2, respectively, and can seal the ends of the placing cylinder 2.

[0039] Reference Figure 2 and Figure 3 The first ball mill 22, the second ball mill 23 and the third ball mill 24 are all hollow cylinders with horizontally extended axes. The first ball mill 22, the second ball mill 23 and the third ball mill 24 are distributed in the placement tube 2 in a triangular shape, and both ends are rotatably connected to the support plate 21 respectively. The first ball mill 22, the second ball mill 23 and the third ball mill 24 are all provided with through holes 241 on the circumferential side walls, and the diameter of the through holes 241 is the same as the maximum diameter of the raw material that meets the mesh number requirements.

[0040] There are multiple steel balls, and the multiple steel balls are divided into three specifications according to their diameters: minimum, medium and maximum. The smallest diameter steel balls are placed in the first ball mill 22, the medium diameter steel balls are placed in the second ball mill 23, and the largest diameter steel balls are placed in the third ball mill 24. When the first ball mill 22, the second ball mill 23 and the third ball mill 24 rotate, the steel balls can move to ball mill the raw materials.

[0041] Reference Figure 1 The screening mechanism 3 is arranged on the supporting plate 21, and is used for dividing the raw materials into three diameter specifications of small, medium and large, and inputting the raw materials of small diameter into the first ball mill 22, the raw materials of medium diameter into the second ball mill 23 and the raw materials of large diameter into the third ball mill 24; the rotating mechanism 4 is arranged on the frame 1, and is used for driving the first ball mill 22, the second ball mill 23 and the third ball mill 24 to revolve around the center of the supporting plate 21 and to rotate around their own axis. The rotation of the first ball mill 22, the second ball mill 23 and the third ball mill 24 can drive the steel balls to move to ball mill the raw materials. The setting of the rotating mechanism 4 can increase the number of times the steel balls move, which is beneficial to improving the ball milling speed of the raw materials.

[0042] Reference Figures 1 to 3 The screening mechanism 3 includes a first barrel 31, a second barrel 32, a third barrel 33, a feed pipe 311, a filter screen 34, a first connection bin 35, a second connection bin 36 and a control assembly 37. The first barrel 31, the second barrel 32 and the third barrel 33 are hollow cylinders with one end open and the open end is fixedly connected to a support plate 21. The first barrel 31, the second barrel 32 and the third barrel 33 correspond to the first ball mill 22, the second ball mill 23 and the third ball mill 24 respectively. The ends of the first ball mill 22, the second ball mill 23 and the third ball mill 24 all pass through the support plate 21, and the ends close to the first barrel 31 are rotatably connected to the first barrel 31, the second barrel 32 and the third barrel 33 respectively. The ends of the first ball mill 22, the second ball mill 23 and the third ball mill 24 away from the first barrel 31 are abutted against the frame 1 and are closed.

[0043] Reference Figure 1 , Figure 3 and Figure 4One end of the feed pipe 311 passes through the first barrel 31 and extends into the first ball mill 22. The filter screen 34 is conical and fixedly connected to the first ball mill 22 opposite to the feed pipe 311. The conical tip of the filter screen 34 extends into the first ball mill 22. The aperture of the filter screen 34 can only allow the raw material with the smallest diameter to pass through; the first connecting bin 35 is fixedly connected between the first barrel 31 and the second barrel 32 and can be communicated with the second barrel 32. A first filter hole 312 is provided on the first barrel 31 opposite to the first connecting bin 35. The first filter hole 312 can allow the medium-diameter raw material to pass through; the second connecting bin 36 is connected and arranged between the first barrel 31 and the third barrel 33. The control component 37 is arranged in the second connecting bin 36. The control component 37 is used to control the raw material after the small and medium diameter filtration to pass through the second connecting bin 36.

[0044] When the raw materials are screened, under the action of the control component 37, the raw materials first enter the first barrel 31 through the feed pipe 311 and are filtered by the filter 34, the small-diameter raw materials enter the first ball mill 22 through the filter 34, and the medium and large-diameter raw materials are blocked by the filter 34. Subsequently, as the first ball mill 22, the second ball mill 23 and the third ball mill 24 rotate around the center of the support plate 21, the medium-diameter raw materials enter the second ball mill 23 through the first filter hole 312, and the remaining large-diameter raw materials enter the third ball mill 24 through the second connecting bin 36.

[0045] Reference Figure 3 and Figure 4 The control assembly 37 includes a third connecting bin 371, a second filter hole 351 and a baffle 372. The third connecting bin 371 is arranged between the second connecting bin 36 and the first connecting bin 35. The side wall of the first connecting bin 35 facing the third connecting bin 371 is provided with a second filter hole 351 for medium-diameter raw materials to pass through. The baffle 372 is arranged in the second connecting bin 36 near one end of the feed pipe 311, and the baffle 372 can rotate under the action of the motor. When the second barrel 32 is not rotated to the upper side, the baffle 372 can block the second connecting bin 36 and enable the third connecting bin 371 to communicate with the feed pipe 311. When the second barrel 32 is rotated to the upper side, the baffle 372 can enable the second connecting bin 36 to communicate with the third connecting bin 371 and block the first barrel 31 from communicating with the second connecting bin 36 and the third connecting bin 371.

[0046] When the first ball mill 22, the second ball mill 23 and the third ball mill 24 rotate around the center of the support plate 21, the baffle 372 blocks the second connecting bin 36, and part of the raw materials enter the third connecting bin 371, among which the medium-diameter raw materials pass through the second filter hole 351 and enter the second ball mill 23. When the second ball mill 23 rotates to the upper side, the baffle 372 blocks the connection between the third connecting bin 371 and the second connecting bin 36 and the first material barrel 31, and connects the second connecting bin 36 with the third connecting bin 371, and the filtered raw materials in the third connecting bin 371 enter the third ball mill 24.

[0047] By the rotation setting of the third connecting bin 371 and the baffle 372, during the rotation of the first barrel 31, the second barrel 32 and the third barrel 33 and the screening of small and medium diameter raw materials, the second connecting bin 36 can always be separated from the feed pipe 311, and only the screened raw materials can enter the second connecting bin 36, thereby reducing the amount of small and medium diameter raw materials entering the third ball mill 24, reducing the difficulty of steel balls in milling the raw materials, and helping to improve the milling speed and milling effect of cement raw materials.

[0048] Reference Figures 1 to 3 The rotating mechanism 4 includes a first gear 41, a second gear 42, an inner gear ring 43 and a rotating source 44. Two first gears 41 are provided, and the two first gears 41 are respectively located at two ends of the placing barrel 2 and connected by a connecting rod, and the end of the connecting rod away from the first barrel 31 passes through the support plate 21 and is fixedly connected to the frame 1.

[0049] Reference Figures 1 to 3 There are six second gears 42, and the six second gears 42 are fixedly sleeved on the two ends of the first ball mill 22, the second ball mill 23 and the third ball mill 24 respectively, the second gear 42 can mesh with the first gear 41, and two inner gear rings 43 are provided corresponding to the first gear 41, and the two inner gear rings 43 are fixedly connected to the inner wall of the placement cylinder 2, and the inner gear rings 43 can mesh with the second gears 42, and the rotation source 44 is installed on the frame 1 and is located on one side of the placement cylinder 2, and a driving wheel is fixedly connected to the driving shaft of the rotation source 44, and a driven wheel is fixedly sleeved on the placement cylinder 2, and a belt is sleeved on the driving wheel and the driven wheel.

[0050] When the raw materials need to be ball-milled, the rotation source 44 drives the placement barrel 2 to rotate. The rotation of the placement barrel 2 can mix the qualified raw materials passing through the through hole 241, thereby reducing the risk of uneven mixing of the raw materials and helping to improve the reaction effect of subsequent raw materials. When the placement barrel 2 rotates, the inner gear ring 43 can be driven to rotate. The inner gear ring 43 engages with the second gear 42 to drive the first ball mill 22, the second ball mill 23 and the third ball mill 24 to rotate around the center of the support plate 21. At the same time, the second gear 42 engages with the first gear 41 to make the first ball mill 22, the second ball mill 23 and the third ball mill 24 rotate around their own axes respectively.

[0051] Reference Figures 4 to 6 A cement raw material grinding device also includes a first support ring 5, a fourth connecting bin 51, a second support ring 6, a fifth connecting bin 61 and a current limiting component 7. Two first support rings 5 ​​are provided, and the two first support rings 5 ​​are located at one end of the placement barrel 2 away from the first barrel 31, and are respectively sleeved on the second ball mill 23 and the third ball mill 24. The fourth connecting bin 51 is arranged between the two first support rings 5 ​​and has first openings at both ends. A plurality of third filter holes 231 are provided on the areas where the second ball mill 23 and the third ball mill 24 are sleeved by the first support ring 5. The plurality of third filter holes 231 can allow medium-diameter raw materials to pass through, and are connected to the fourth connecting bin 51. The inner hole diameter of the third ball mill 24 gradually increases in the direction from the third barrel 33 to the first support ring 5.

[0052] Reference Figures 4 to 6 Two second support rings 6 are provided, and the two second support rings 6 are rotatably sleeved on the first ball mill 22 and the second ball mill 23 respectively. The fifth connecting bin 61 is provided between the two second support rings 6 and has second openings at both ends. A plurality of fourth filter holes 221 are provided on the area where the first ball mill 22 and the second ball mill 23 are sleeved by the second support rings 6. The plurality of fourth filter holes 221 can allow small-diameter raw materials to pass through and can be connected with the fifth connecting bin 61. A flow limiting component 7 is provided in the placing cylinder 2. The flow limiting component 7 is used to make the fourth connecting bin 51 and the fifth connecting bin 61 unidirectionally conductive. The inner hole diameters of the first ball mill 22 and the second ball mill 23 gradually decrease from the middle to the two ends.

[0053] During the process of ball milling the raw materials by steel balls, the cement raw materials in the third ball mill 24 can be ball milled into small and medium diameter raw materials, and the medium diameter raw materials in the second ball mill 23 can be ball milled into small diameter raw materials. Under the action of the current limiting component 7, the small and medium diameter raw materials in the third ball mill 24 enter the second ball mill bin through the third filter hole 231 during rotation, and the small diameter raw materials in the second ball mill 23 enter the first ball mill 22 through the fourth filter hole 221.

[0054] By setting the first support ring 5, the fourth connecting chamber 51, the second support ring 6 and the fifth connecting chamber 61, the raw materials ball-milled into small and medium diameters in the third ball mill 24 can enter the second ball mill 23, and the raw materials ball-milled into small diameters in the second ball mill 23 can enter the first ball mill 22, so that steel balls of different diameters can be conveniently used to ball-mill raw materials of corresponding diameters, reducing the difficulty of ball-milling the raw materials, facilitating the contact between the steel balls and the raw materials, and being beneficial to improving the ball-milling effect and efficiency of the raw materials.

[0055] Reference Figure 6 The current limiting assembly 7 includes a blocking plate 71, a torsion spring and a stopper 72. Two blocking plates 71 are provided, and the two blocking plates 71 are rotatably arranged in the fourth connecting chamber 51 and the fifth connecting chamber 61 respectively. Four torsion springs are provided, and the four torsion springs are grouped in two, and each group of torsion springs is provided corresponding to one blocking plate 71. The blocking plate 71 located in the fourth connecting chamber 51 is connected to the fourth connecting chamber 51 through the torsion spring, and the blocking plate 71 located in the fifth connecting chamber 61 is connected to the fifth connecting chamber 61 through the torsion spring. Two stoppers 72 are provided, and the two stoppers 72 are fixedly connected in the fourth connecting chamber 51 and the fifth connecting chamber 61 respectively. The stopper 72 located in the fourth connecting chamber 51 is arranged at one end close to the third ball mill chamber, and the stopper 72 located in the fifth connecting chamber 61 is arranged at one end close to the second ball mill chamber.

[0056] When the third ball mill 24 rotates upward, the material in the third ball mill 24 can push the blocking plate 71 in the fourth connecting chamber 51 to rotate; when the second ball mill 23 rotates upward, the material in the second ball mill 23 can push the blocking plate 71 in the fifth connecting chamber 61 to rotate, and the baffle 372 in the fourth connecting chamber 51 can be blocked by the block 72 to separate the fourth connecting chamber 51; when the first ball mill 22 rotates upward, the baffle 372 in the fifth connecting chamber 61 can be blocked by the block 72 to separate the fifth connecting chamber 61.

[0057] Reference Figure 2 A cement raw material grinding device also includes a support plate 8 and a discharge port 25. The support plate 8 is rotatably arranged in the placement cylinder 2, and the first ball mill 22, the second ball mill 23 and the third ball mill 24 all rotate through the support plate 8. The setting of the support plate 8 can support the first ball mill 22, the second ball mill 23 and the third ball mill 24, which is conducive to improving the stability of the first ball mill 22, the second ball mill 23 and the third ball mill 24; the discharge port 25 is opened on the placement cylinder 2 and located on both sides of the support plate 8. The setting of the discharge port 25 can facilitate the discharge of qualified raw materials.

[0058] When the cement raw materials are ball-milled, the screening mechanism 3 first screens the size of the raw materials, and then inputs the small, medium and large sized cement raw materials into the first ball mill 22, the second ball mill 23 and the third ball mill 24 respectively. At the same time, the rotating mechanism 4 drives the first ball mill 22, the second ball mill 23 and the third ball mill 24 to rotate around the center of the support plate 21 and rotate around their own axes respectively. The steel balls ball-mill the cement raw materials, and qualified raw materials flow out of the first ball mill 22, the second ball mill 23 and the third ball mill 24 through the through hole 241. The first ball mill 22, the second ball mill 23 and the third ball mill 24 revolve around the center of the support plate 21 and rotate around their own axes respectively. The number of times the steel balls ball-mill the raw materials can be increased is conducive to improving the ball milling efficiency.

[0059] In the present application, the cement raw materials can be screened into small, medium and large sizes and respectively input into the first ball mill 22, the second ball mill 23 and the third ball mill 24 for ball milling. In the process of ball milling the cement raw materials with steel balls, qualified raw materials can be discharged, which can facilitate the ball milling of cement raw materials of different sizes by steel balls, reduce the obstruction of qualified raw materials to the ball milling of steel balls, reduce the time of ball milling raw materials, and reduce the risk of some unqualified raw materials gathering in qualified raw materials without being ball milled, which is beneficial to improving the ball milling efficiency and ball milling effect.

[0060] The implementation principle of a cement raw material grinding device in the embodiment of the present application is:

[0061] When the raw material needs to be ground, the rotation source 44 drives the placement barrel 2 to rotate. The rotation of the placement barrel 2 drives the first ball mill 22, the second ball mill 23, the third ball mill 24 and the support plate 21 to rotate around the center of the support plate 21, and drives the first ball mill 22, the second ball mill 23, and the third ball mill 24 to rotate around their own axes. The rotation of the support plate 21 drives the first barrel 31, the second barrel 32 and the third barrel 33 to rotate synchronously. The raw material is transported to the filter screen 34 through the feed pipe 311 and is filtered during the rotation of the first ball mill 22. The small-diameter raw material enters the first ball mill 22.

[0062] When the second barrel 32 has not rotated upward, the baffle 372 rotates to block the second connecting bin 36, and the medium and large diameter raw materials in the filter screen 34 enter the first barrel 31 and the third connecting bin 371 during the rotation, and the medium diameter raw materials enter the second ball mill 23 through the first filter hole 312 or the second filter hole 351. When the second barrel 32 rotates upward, the baffle 372 rotates to block the connection between the first barrel 31 and the second connecting bin 36, and at the same time connects the third connecting bin 371 with the second connecting bin 36, and the filtered raw materials in the third connecting bin 371 enter the third ball mill 24.

[0063] After the raw materials enter the first ball mill 22, the second ball mill 23 and the third ball mill 24, the steel balls in the first ball mill 22, the second ball mill 23 and the third ball mill 24 ball mill the raw materials. When the third ball mill 24 rotates to the upper side, the raw materials ground into small and medium diameters in the third ball mill 24 enter the second ball mill 23 through the third filter hole 231. When the second ball mill 23 rotates to the upper side, the raw materials ground into small diameters in the second ball mill 23 enter the first ball mill 22 through the fourth filter hole 221. In the process of the steel balls ball milling the raw materials, the raw materials of qualified sizes in the first ball mill 22, the second ball mill 23 and the third ball mill 24 enter the placement tube 2 through the through hole 241. The placement tube 2 rotates to mix the qualified raw materials, and then the mixed raw materials flow out through the discharge port 25.

[0064] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0065] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A cement raw material grinding device, comprising a frame (1), wherein a placing cylinder (2) is horizontally arranged on the frame (1), characterized in that: Also includes: A support plate (21), a first ball mill (22), a second ball mill (23), a third ball mill (24), steel balls, a screening mechanism (3), and a rotating mechanism (4); The support plate (21) is rotatably arranged at one end of the placement cylinder (2) and can seal the end of the placement cylinder (2); the first ball mill cylinder (22), the second ball mill cylinder (23) and the third ball mill cylinder (24) are distributed in the placement cylinder (2) in a triangular shape and are all rotatably connected to the support plate (21); the side walls of the first ball mill cylinder (22), the second ball mill cylinder (23) and the third ball mill cylinder (24) are all provided with through holes (241) capable of allowing qualified raw materials to pass through; a plurality of steel balls are provided, and the plurality of steel balls are divided into three specifications of minimum, medium and maximum according to diameter size and are sequentially arranged in the first ball mill cylinder (22), the second ball mill cylinder (23) and the third ball mill cylinder (24); The screening mechanism (3) is arranged on the support plate (21), and is used to screen the raw materials, and input the raw materials with small, medium and large diameters into the first ball mill (22), the second ball mill (23) and the third ball mill (24) respectively; the rotating mechanism (4) is arranged on the frame (1), and is used to drive the first ball mill (22), the second ball mill (23) and the third ball mill (24) to revolve around the center of the support plate (21) and to rotate around their own axis; The screening mechanism (3) comprises a first barrel (31), a second barrel (32) and a third barrel (33) which are fixedly connected to the support plate (21); the first barrel (31), the second barrel (32) and the third barrel (33) correspond to the first ball mill (22), the second ball mill (23) and the third ball mill (24) in a one-to-one manner and are rotatably connected; the first barrel (31) is connected to a feed pipe (311); a filter for passing small-diameter raw materials is fixedly connected to the first ball mill (22) opposite to the feed pipe (311). The net (34) comprises a first connecting bin (35) disposed between the first barrel (31) and the second barrel (32); the first barrel (31) is provided with a first filtering hole (312) for medium-diameter raw materials to pass through, and the first barrel (31) is directly opposite to the first connecting bin (35); a second connecting bin (36) is connected between the first barrel (31) and the third barrel (33); a control component (37) is disposed on the second connecting bin (36); the control component (37) is used to control the raw materials after small-medium-diameter filtration to pass through the second connecting bin (36); The control component (37) comprises a third connecting chamber (371) arranged between the second connecting chamber (36) and the first connecting chamber (35); a second filter hole (351) capable of allowing the medium-diameter raw material to pass through is provided on a side wall of the first connecting chamber (35) facing the third connecting chamber (371); a baffle (372) is rotatably provided at one end of the second connecting chamber (36) close to the feed pipe (311); when the second barrel (32) is not rotated upward, the baffle (372) can block the second connecting chamber (36) and enable the third connecting chamber (371) to communicate with the feed pipe (311); when the second barrel (32) is rotated upward, the baffle (372) can enable the second connecting chamber (36) and the third connecting chamber (371) to communicate with each other and block the first barrel (31) from communicating with the second connecting chamber (36) and the third connecting chamber (371).

2. A cement raw material grinding equipment according to claim 1, characterized in that: The rotating mechanism (4) comprises a first gear (41) arranged in the placement cylinder (2); a second gear (42) is fixedly sleeved on each of the first ball milling cylinder (22), the second ball milling cylinder (23) and the third ball milling cylinder (24); the first gear (41) can mesh with the two second gears (42); an inner gear ring (43) that can mesh with the second gears (42) is fixedly connected to the inner side wall of the placement cylinder (2); and a rotating source (44) that can drive the placement cylinder (2) to rotate is installed on the frame (1).

3. A cement raw material grinding equipment according to claim 2, characterized in that: The second ball mill (23) and the third ball mill (24) are both sleeved with a first support ring (5), the two first support rings (5) are connected via a fourth connecting chamber (51), the second ball mill (23) and the third ball mill (24) are provided with a third filter hole (231) corresponding to the first support ring (5) for medium-diameter raw materials to pass through, the first ball mill (22) and the second ball mill (23) are both sleeved with a second support ring (6), the two second support rings (6) are connected via a fifth connecting chamber (61), the first ball mill (22) and the second ball mill (23) are provided with a fourth filter hole (221) corresponding to the second support ring (6) for small-diameter raw materials to pass through, a limiting flow component (7) is arranged in the placement cylinder (2), the limiting flow component (7) is used to make the fourth connecting chamber (51) and the fifth connecting chamber (61) unidirectionally conductive, wherein the first support ring (5) and the second support ring (6) are both located at an end away from the first barrel (31).

4. A cement raw material grinding equipment according to claim 3, characterized in that: The current limiting assembly (7) comprises a blocking plate (71) and a torsion spring respectively arranged in the fourth connecting bin (51) and the fifth connecting bin (61); the blocking plate (71) is respectively connected to the fourth connecting bin (51) and the fifth connecting bin (61) via the torsion spring; a block (72) is fixedly connected to each of the fourth connecting bin (51) and the fifth connecting bin (61); the block (72) is respectively located at one end of the fourth connecting bin (51) close to the third ball mill (24) and at one end of the fifth connecting bin (61) close to the second ball mill (23).

5. A cement raw material grinding equipment according to claim 4, characterized in that: The inner diameter of the third ball mill (24) gradually increases in a direction from one end of the third material barrel (33) to the first support ring (5), and the inner diameters of the first ball mill (22) and the second ball mill (23) gradually decrease in a direction from the middle to both ends.

6. A cement raw material grinding equipment according to claim 5, characterized in that: A support plate (8) is rotatably arranged in the placement cylinder (2); the first ball milling cylinder (22), the second ball milling cylinder (23) and the third ball milling cylinder (24) all pass through the support plate (8) in a rotatably connected manner; and discharge ports (25) are provided on both sides of the placement cylinder (2) located on the support plate (8).

7. The cement raw material grinding equipment according to claim 1, characterized in that: The filter screen (34) is arranged in a conical shape, and the tip of the cone of the filter screen (34) extends into the first ball mill cylinder (22).

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