Cement grinding device

Abstract

The invention relates to a cement grinding device, comprising a grinding shell, a grinding assembly, an air blowing shell, an electric push rod, a central frame, a roller grinding assembly, a ball mill assembly, and an output port. The invention can solve the problem that the prior art does not take into account the different particle sizes of cement clinker. In the actual grinding process, it is difficult to uniformly and finely grind cement clinker of different particle sizes through a single grinding roller box, resulting in the powder after grinding failing to reach the required particle size. In addition, during the grinding process in a single grinding roller box, the powder after grinding may agglomerate with each other due to the small particle size, resulting in reduced cement quality.

Description

Technical Field

[0001] The invention relates to cement grinding and processing related fields, and in particular to a cement grinding device. Background Art

[0002] Cement grinding is the last process of cement manufacturing and also the process that consumes the most electricity. Its main function is to grind cement clinker (and retarder, performance adjustment material, etc.) to a suitable particle size (expressed by fineness, specific surface area, etc.), form a certain particle gradation, increase its hydration area, accelerate the hydration rate, and meet the requirements of cement paste coagulation and hardening. The process of using external force to overcome the cohesive force between solid material molecules, split them, and reduce the particle size of material particles is called crushing or grinding, or grinding for short.

[0003] The traditional grinding structure, such as the Chinese patent with announcement number CN105750021A, discloses a vertical mill for cement production, including a powder selector, a material box, a feed port, a machine body, a grinding roller box, an inspection door, a driver, a rotating shaft, a slag discharge port, a speed controller, a finished product outlet, a driving wheel, a driving motor, an operation panel and a fixed base, wherein the powder selector is connected to the machine body, the material box is fixed at the left position of the powder selector, the finished product outlet is at the right position of the powder selector, the driver is installed at the lower position of the grinding roller box, the rotating shaft is installed at the upper position of the speed controller, the driving motor is fixed at the right position of the driving wheel, and the fixed base is connected to the machine body. The grinding roller device of the vertical mill for cement production is not easy to wear and has a long service life. A sound insulation protective layer is set in the machine body, the noise is small, the grinding efficiency is high, the fineness ratio is high, the high-quality powder selector has good powder selection efficiency, saves time, and provides people with finer and better cement materials.

[0004] In the above-mentioned technology, the raw materials are mainly processed by a grinding roller box, and the main considerations are wear, life, noise, etc., but the different particle sizes of cement clinker are not taken into account. In the actual grinding process, it is difficult to uniformly and finely grind cement clinker of different particle sizes through a single grinding roller box, resulting in the powder after grinding failing to reach the required particle size. In addition, during the grinding process in a single grinding roller box, the powder after grinding may agglomerate with each other due to its small particle size, resulting in reduced cement quality.

[0005] Based on this, there is still room for improvement on the existing grinding structure technology. Summary of the invention

[0006] The purpose of the present invention is to provide a cement grinding device to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A cement grinding device comprises a grinding shell, wherein grinding assemblies with adjustable angles are evenly arranged inside the grinding shell, and the incoming cement clinker is subjected to multiple grinding to obtain powder by the cooperation of the grinding shell and the grinding assemblies; an air blowing shell, which is slidably sleeved on the lower end of the grinding shell, and an electric push rod is connected between the grinding shell and the air blowing shell; a concentration frame, which is installed at the lower end of the air blowing shell; a roller mill assembly, which is installed at the lower end of the concentration frame, and the falling powder is subjected to rolling grinding by the roller mill assembly; and a ball mill assembly, which is connected and installed with the lower end of the roller mill assembly, and the lower end discharge port of the ball mill assembly is connected through an output port, and the output port is supported in position by a bracket.

[0009] As a preferred technical solution of the present invention, the grinding shell includes a connecting shell, a feed port, and a grinding layer. The feed port is installed at the upper end of the connecting shell, and an electric turntable is provided at the lower end of the connecting shell. The grinding layer is installed on the electric turntable, and the inner diameter of the grinding layer with a bowl-shaped structure gradually decreases from top to bottom.

[0010] As a preferred technical solution of the present invention, the grinding assembly includes a driving base, a grinding roller, and a protrusion unit. The driving base is installed on the outer wall of the connecting shell, one end of the driving base is connected to the grinding roller, and the driving base can drive the grinding roller to adjust the angle and rotate axially. The protrusion unit slidably arranged in the hidden groove opened in the grinding roller is used in conjunction with the driving base.

[0011] As a preferred technical solution of the present invention, the driving base includes a rotating roller, a connecting rod, a motor group, a sliding member, a built-in spring and an extrusion block. The rotating roller is arranged on the outer wall of the connecting shell through an ear seat, and a connecting rod is sleeved on the rotating roller. The middle part of the connecting rod is located in an angle groove opened in the connecting shell, and the connecting rod and the angle groove are sealed by a sealing cover. The inner end of the connecting rod is connected to the motor group, and the output shaft of the motor group is connected to one end of a sliding member with a square cross-section. The sliding member is horizontally slidably arranged in an active cavity opened in the grinding roller, and an internal spring is connected between the sliding member and the active cavity. Extrusion blocks are evenly arranged on the outer wall of the sliding member along its circumference.

[0012] As a preferred technical solution of the present invention, the protrusion unit includes a protrusion and an extrusion head. The protrusion is slidably arranged in the hidden groove, and the protrusion and the hidden groove are elastically connected. An extrusion head is arranged at one end of the protrusion close to the extrusion block, and the extrusion head and the extrusion block are used in cooperation for extrusion.

[0013] As a preferred technical solution of the present invention, the air blowing shell includes a sealing shell, a blocking piece, an air pipe, an air blowing pump, a blocking head, a linkage rod and a connecting ring. An electric push rod is connected between the grinding shell and the sealing shell. A linkage cavity is opened in the side wall interlayer of the sealing shell. A corresponding port is opened at the upper end of the side wall of the linkage cavity. The blocking head slidably arranged in the linkage cavity is connected to the lower end of the linkage rod. The upper end of the linkage rod is connected to the connecting ring. The connecting ring is fixedly installed on the outer wall of the grinding shell. A docking port corresponding to the corresponding port position is opened in the connecting shell. An air pipe made of rigid material is installed between the linkage cavity and the diversion cavity opened by the blocking piece. The blocking piece in the initial position is blocked in the discharge port opened in the middle of the grinding layer. The air blowing pump connected to the linkage cavity is installed on the concentrated frame.

[0014] As a preferred technical solution of the present invention, the upper end of the plugging member is a conical head structure, the upper end of the side wall of the plugging member is evenly provided with ejection holes, and the ejection holes are communicated with the diversion cavity.

[0015] As a preferred technical solution of the present invention, the roller grinding assembly includes a collecting frame, an electric roller, an inner core roller, an outer core roller, a pressure component, grinding block one and grinding block two. The collecting frame is installed at the lower end of the concentrating frame, and an electric roller is rotatably arranged in the middle of the collecting frame. The outer part of the electric roller is sleeved with an inner core roller, and the outer part of the inner core roller is arranged with an outer core roller. The outer wall of the outer core roller is evenly provided with inner pressure grooves along its circumference, and a rotatable pressure component is arranged on the inner pressure groove. The outer core roller is located between grinding block one and grinding block two, and grinding block one and grinding block two are arranged on the left and right. Grinding block one is connected to the left inner wall of the collecting frame through electric slider one, and grinding block two is connected to the right inner wall of the collecting frame through electric slider two.

[0016] As a preferred technical solution of the present invention, the outer wall of the inner core roller is evenly provided with arc-shaped grooves along its circumference, the inner diameter wall of the outer core roller is evenly provided with arc-shaped sliders along its circumference, the arc-shaped sliders are slidably set in the arc-shaped grooves, and the arc-shaped sliders and the arc-shaped grooves are elastically connected, the outer wall of the outer core roller is evenly provided with resistance-increasing layers along its circumference, and resistance-increasing pads are evenly provided on the arc-shaped inner wall of grinding block one, and the resistance-increasing pads are used in conjunction with the resistance-increasing layer.

[0017] As a preferred technical solution of the present invention, the pressurizing assembly includes a pressurizing grid plate, a grinding plate, and a fixing rod. One end of the pressurizing grid plate is connected to the inner pressure groove by a pin shaft, the pressurizing grid plate and the inner pressure groove are elastically connected, and a fixing rod is fixedly connected between the grinding plate located in the inner pressure groove and the inner core roller.

[0018] As a preferred technical solution of the present invention, an air blowing unit is arranged inside the grinding block 2, and the air blowing unit includes an air pump and an air blowing pipe. The air blowing pipe is installed on the arc-shaped inner wall of the grinding block 2, and the air pump connected to the air pump is installed in the grinding block 2.

[0019] In summary, this application includes the following beneficial technical effects:

[0020] The cement grinding device described in the present invention performs multiple grinding operations on cement clinker. The cement clinker is ground in two directions through the cooperation of horizontal rotation inside the grinding shell and longitudinal rotation of the grinding assembly, thereby performing the initial grinding on the cement clinker, so that the particle size of the cement clinker is crushed and ground evenly, and then the cement clinker is extruded and crushed in the cavity by the roller mill assembly, and finally it is finally ground by the ball mill assembly. The cement clinker is ground with high intensity through multi-directional adjustment, multi-mode grinding and multi-frequency grinding to obtain cement that meets the requirements, thereby improving the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 is an overall cross-sectional view of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure between the connection shell and the grinding assembly of the present invention;

[0024] Figure 4 The present invention Figure 2 A local enlarged view of point X;

[0025] Figure 5 The present invention Figure 2 A local enlarged view of the Y position;

[0026] Figure 6 The present invention Figure 2 A partial enlarged view of point Z.

[0027] Description of the accompanying drawings: 1. grinding shell; 2. grinding assembly; 3. air blowing shell; 4. electric push rod; 5. central frame; 6. roller grinding assembly; 7. ball mill assembly; 8. output port; 9. linkage chamber; 10. docking port; 11. connecting shell; 12. feed port; 13. grinding layer; 14. internal pressure groove; 15. arc chute; 21. driving base; 22. grinding roller; 23. protruding unit; 31. sealing shell; 32. plugging piece; 33. air pipe; 34. air blowing pump; 35. plugging head; 36. linkage rod; 37. Connecting ring; 61, electric roller; 62, inner core roller; 63, outer core roller; 64, pressurizing assembly; 65, grinding block one; 66, grinding block two; 67, arc-shaped slider; 68, resistance-enhancing layer; 69, resistance-enhancing pad; 211, rotating roller; 212, connecting rod; 213, motor group; 214, sliding part; 215, built-in spring; 216, extrusion block; 231, protrusion; 232, extrusion head; 641, pressurizing grid plate; 642, grinding plate; 643, fixing rod; 691, air pump; 692, air blowpipe. DETAILED DESCRIPTION

[0028] The following is combined with Figures 1 to 6 This application is described in further detail.

[0029] The embodiment of the present application discloses a cement grinding device. The present application performs multiple grinding operations on cement clinker, gradually grinding the volume of the clinker to reduce it and improving its uniformity, thereby greatly improving the grinding efficiency.

[0030] Reference Figures 1 to 3 As shown, a cement grinding device disclosed in this embodiment includes a grinding shell 1, a grinding assembly 2, an air blowing shell 3, an electric push rod 4, a concentrating frame 5, a roller mill assembly 6, a ball mill assembly 7, and an output port 8. The grinding shell 1 is evenly provided with angle-adjustable grinding assemblies 2. The grinding shell 1 and the grinding assembly 2 cooperate to perform multiple grinding on the incoming cement clinker to obtain powder. The air blowing shell 3 is slidably sleeved on the lower end of the grinding shell 1, and the electric push rod 4 is connected between the grinding shell 1 and the air blowing shell 3. The concentrating frame 5 is installed at the lower end of the air blowing shell 3, and the roller mill assembly 6 is installed at the lower end of the concentrating frame 5. The falling powder is rolled by the roller mill assembly 6. The ball mill assembly 7 is connected to the lower end of the roller mill assembly 6 and installed. The lower end discharge port of the ball mill assembly 7 is connected through the output port 8, and the output port 8 is supported by a bracket.

[0031] In the actual grinding process, the cement clinker is transported from the top to the grinding shell 1, and the entering cement clinker is subjected to multiple grinding by the cooperation of the grinding shell 1 and the grinding assembly 2 to obtain powder. After the powder is formed, it falls into the roller mill assembly 6 for further rolling grinding, and then enters the ball mill assembly 7 for ball grinding, and finally is output from the output port 8. The present application grinds the cement clinker (and retarder, performance adjustment material) to a suitable particle size (expressed in fineness, specific surface area, etc.) through multiple grinding operations to form a certain particle gradation to make it more in line with the requirements.

[0032] Reference Figure 2 As shown, in order to reduce the volume and make the cement clinker of different particle sizes uniform, the present application performs multi-directional grinding operations on it through the cooperation of the grinding shell 1 and the grinding assembly 2. The specific structure is as follows: the grinding shell 1 includes a connecting shell 11, a feed port 12, and a grinding layer 13. The feed port 12 is installed at the upper end of the connecting shell 11, and an electric turntable is provided at the lower end of the connecting shell 11. The grinding layer 13 is installed on the electric turntable, and the inner diameter of the grinding layer 13 with a bowl-shaped structure gradually decreases from top to bottom.

[0033] Reference Figure 3 , Figure 4 As shown, the grinding assembly 2 includes a driving base 21, a grinding roller 22, and a protrusion unit 23. The driving base 21 is installed on the outer wall of the connecting shell 11, and one end of the driving base 21 is connected to the grinding roller 22. The driving base 21 can drive the grinding roller 22 to adjust the angle and rotate axially. The protrusion unit 23 slidably arranged in the hidden groove opened in the grinding roller 22 is used in conjunction with the driving base 21.

[0034] In the actual operation process, the driving base 21 drives the grinding roller 22 to rotate at an angle so that the grinding roller 22 after angle adjustment is horizontally matched with the upper surface of the grinding layer 13, and the spacing between the grinding layer 13 and the grinding roller 22 is arranged at an equal spacing. After the cement clinker enters the grinding layer 13 from the feed inlet 12, the grinding layer 13 is driven by the electric turntable to rotate horizontally. At the same time, the driving base 21 drives the grinding roller 22 to rotate longitudinally. The horizontally rotating grinding layer 13 is opposite to the longitudinally rotating grinding roller 22. At the same time, under the action of the air blowing shell 3, the cement clinker is promoted to move inside. The cement clinker with different particle sizes is multi-ground by the cooperation between the annular grinding roller 22, the intermittently raised protrusion unit 23 and the grinding layer 13, so that the volume of the clinker is reduced and homogenized.

[0035] Reference Figure 4As shown, during the longitudinal rotation of the grinding roller 22, in order to increase the grinding effect, the present application provides intermittent raised points on the surface of the grinding roller 22 when the grinding roller 22 rotates, which are used in conjunction with the driving base 21 and the raised unit 23. The specific structure is as follows: the driving base 21 includes a rotating roller 211, a connecting rod 212, a motor group 213, a sliding member 214, a built-in spring 215 and an extrusion block 216. The rotating roller 211 is arranged on the outer wall of the connecting shell 11 through an ear seat. The connecting rod 212 is sleeved on the rotating roller 211. The middle part of the connecting rod 212 is located at the opening of the connecting shell 11. In the angle groove, the connecting rod 212 and the angle groove are sealed by a sealing cover, which has a sealing effect to prevent cement clinker from leaking out of the angle groove. The inner end of the connecting rod 212 is connected to the motor group 213, and the output shaft of the motor group 213 is connected to one end of a sliding member 214 with a square cross-section. The sliding member 214 is horizontally slidably arranged in the active cavity opened by the grinding roller 22. An internal spring 215 is connected between the sliding member 214 and the active cavity. The internal spring 215 plays the role of elastic connection. The outer wall of the sliding member 214 is evenly provided with extrusion blocks 216 along its circumference.

[0036] Reference Figure 4 As shown, the protrusion unit 23 includes a protrusion 231 and an extrusion head 232. The protrusion 231 is slidably set in the hidden groove, and the protrusion 231 and the hidden groove are elastically connected. The elastic connection always keeps the tendency of the protrusion 231 to retract into the hidden groove. An extrusion head 232 is set at one end of the protrusion 231 close to the extrusion block 216, and the extrusion head 232 and the extrusion block 216 are used for extrusion cooperation.

[0037] In the actual operation process, after the angle of the rotating roller 211 changes, elastic sliding will occur between its position and the sliding member 214 and under the action of the built-in spring 215, so that the extrusion head 232 and the extrusion block 216 will undergo irregular intermittent collision and extrusion. At this time, the protrusion 231 will synchronously protrude irregularly and intermittently, and then extrusion collision grinding will occur.

[0038] Reference Figure 1 , Figure 2 , Figure 5As shown, the air blowing shell 3 includes a sealing shell 31, a plugging member 32, an air delivery pipe 33, an air blowing pump 34, a plugging head 35, a linkage rod 36 and a connecting ring 37. An electric push rod 4 is connected between the grinding shell 1 and the sealing shell 31. A linkage cavity 9 is provided in the side wall interlayer of the sealing shell 31. A corresponding port is provided at the upper end of the side wall of the linkage cavity 9. The plugging head 35 slidably arranged in the linkage cavity 9 is connected to the lower end of the linkage rod 36. The upper end of the linkage rod 36 is connected to the connecting ring 37. The connecting ring 37 is fixedly installed at the outer wall position of the grinding shell 1. The docking port 10 corresponding to the corresponding port position is provided at the connecting ring 37. In the connecting shell 11, an air pipe 33 made of rigid material is installed between the linkage chamber 9 and the diversion chamber opened by the blocking piece 32. The rigid material avoids the situation that the air pipe 33 cannot support the blocking piece 32 in position, and the existence of the air pipe 33 does not affect the situation that the powder falls downward. The blocking piece 32 in the initial position is blocked in the discharge port opened in the middle of the grinding layer 13, and the air blowing pump 34 connected to the linkage chamber 9 is installed on the central frame 5; the upper end of the blocking piece 32 is a conical head structure, and the upper end of the side wall of the blocking piece 32 is evenly provided with ejection holes, and the ejection holes are connected with the diversion chamber.

[0039] During the actual operation, the gas is delivered to the linkage chamber 9 through the air pump 34. When the cement clinker is working between the grinding shell 1 and the grinding assembly 2, the gas in the linkage chamber 9 enters the diversion chamber of the plugging piece 32 through the air pipe 33, and then is ejected from the ejection hole, thereby promoting the movement of the cement clinker. After the cement clinker is ground into powder in the grinding shell 1, the connecting shell 11 is driven to rise by the electric push rod 4. At this time, the connecting ring 37 drives the linkage rod 36 and the plugging head 35 to rise, so that the plugging piece 32 no longer blocks the discharge port and the plugging head 35 isolates the connecting position between the air pipe 33 and the linkage chamber 9. At this time, the corresponding port opened in the linkage chamber 9 is aligned with the docking port 10, and the gas in the linkage chamber 9 is ejected from the docking port 10, thereby blowing the connecting shell 11 from all sides to the middle, thereby promoting the powder to be blown to the discharge port position, reducing the difficulty of discharging the powder from the discharge port.

[0040] Reference Figure 2 , Figure 6As shown, in order to improve the degree of grinding, the present application is provided with a roller mill assembly 6, and its specific structure is that the roller mill assembly 6 includes a collecting frame, an electric roller 61, an inner core roller 62, an outer core roller 63, a pressure component 64, a grinding block 1 65, and a grinding block 2 66. The collecting frame is installed at the lower end of the central frame 5, and an electric roller 61 is rotatably arranged in the middle of the collecting frame. The outer part of the electric roller 61 is sleeved with an inner core roller 62, and the outer part of the inner core roller 62 is provided with an outer core roller 63. The outer wall of the outer core roller 63 is uniformly provided with inner pressure grooves 14 along its circumference, and a rotatable pressure component 64 is arranged on the inner pressure groove 14. The outer core roller 63 is located between the grinding block 1 65 and the grinding block 2 66. The grinding block 1 65 and the grinding block 2 66 are arranged on the left and right. The grinding block 1 65 is connected to the left inner wall of the collecting frame through the electric slider 1, and the grinding block 2 66 is connected to the right inner wall of the collecting frame through the electric slider 2.

[0041] During the actual operation, the cement clinker that falls into the collecting frame finally falls into the inner pressure groove 14, and the inner core roller 62 and the outer core roller 63 are driven by the electric roller 61 to rotate coaxially (counterclockwise). When the outer core roller 63 enters the area of ​​grinding block 1 65, the pressure component 64 is squeezed by the inner arc wall of grinding block 1 65, thereby closing and pressurizing, thereby further pressurizing and crushing the powder in the inner pressure groove 14. When the pressure component 64 enters the area of ​​grinding block 2 66, the angle is reset, so that the powder in the inner pressure groove 14 is blown out by gravity and air blowing. The blown powder enters between the lower grinding area of ​​grinding block 1 65 and the lower grinding area of ​​grinding block 2 66, and the powder in this area is further ground by the reverse grinding of grinding block 1 65 and grinding block 2 66.

[0042] Reference Figure 6As shown, in order to further improve the crushing effect, the present application further optimizes the connection method of the inner core roller 62 and the outer core roller 63, and further explains the structure of the pressure component 64, as follows: the outer wall of the inner core roller 62 is uniformly provided with an arc groove 15 along its circumference, the inner diameter wall of the outer core roller 63 is uniformly provided with an arc slider 67 along its circumference, the arc slider 67 is slidably set in the arc groove 15, and the arc slider 67 is elastically connected to the arc groove 15, the outer wall of the outer core roller 63 is uniformly provided with a resistance-increasing layer 68 along its circumference, and the arc inner wall of the grinding block 65 is uniformly provided with a resistance-increasing pad 69, and the resistance-increasing pad 69 and the resistance-increasing pad 69 are uniformly provided. The layers 68 are used in conjunction with each other. When the two are in contact, a large resistance is generated so that the angle of the outer core roller 63 where the resistance increasing layer 68 is located does not move, but the inner core roller 62 continues to rotate. When the inner core roller 62 rotates within a certain range, the arc slider 67 moves to the maximum distance in the arc slide groove 15 and drives the outer core roller 63 to rotate. At this time, the resistance increasing layer 68 moves from the resistance increasing pad 69 with resistance until the two are separated. At this time, the angles of the inner core roller 62 and the outer core roller 63 are elastically reset under the action of elasticity. During the whole process, the grinding plate 642 fixedly connected to the inner core roller 62 moves a short distance in the inner pressure groove 14 of the outer core roller 63, thereby performing extrusion-type crushing.

[0043] Reference Figure 6 As shown, the pressurizing assembly 64 includes a pressurizing grid plate 641, a grinding plate 642, and a fixing rod 643. One end of the pressurizing grid plate 641 is connected to the inner pressure groove 14 by a pin shaft. The pressurizing grid plate 641 and the inner pressure groove 14 are elastically connected. Under the action of the elastic connection, the pressurizing grid plate 641 always maintains a tendency to reset to the outer angle. A fixing rod 643 is fixedly connected between the grinding plate 642 located in the inner pressure groove 14 and the inner core roller 62.

[0044] In actual operation, when the electric roller 61 drives the inner core roller 62 and the outer core roller 63 to rotate coaxially, since the inner core roller 62 and the outer core roller 63 rotate with each other (the arc slider 67 is slidably set in the arc slide groove 15), and the arc slider 67 is elastically connected to the arc slide groove 15, under the intermittent contact between the resistance increasing layer 68 and the resistance increasing pad 69, the inner core roller 62 and the outer core roller 63 rotate with each other in a small range, so that the grinding plate 642 fixedly connected to the inner core roller 62 moves a short distance in the inner pressure groove 14 of the outer core roller 63, thereby squeezing the inside of the inner pressure groove 14 after the cover (the pressure grid plate 641 is squeezed by the inner arc wall of the grinding block 65 to cover the opening position of the inner pressure groove 14), and further squeezing and crushing the powder in the inner pressure groove 14.

[0045] Reference Figure 6As shown, an air blowing unit is provided inside the second grinding block 66, and the air blowing unit includes an air pump 691 and an air blowing pipe 692. The air blowing pipe 692 is installed on the arc-shaped inner wall of the second grinding block 66, and the air pump 691 connected to the air pump 691 is installed in the second grinding block 66.

[0046] In the actual operation process, the gas is delivered to the air blowing pipe 692 by the air delivery pump 691 and then blown out, so as to blow the inside of the open internal pressure groove 14, so as to force the naturally fallen powder and the powder remaining in the internal pressure groove 14 to be blown downward.

[0047] Working principle:

[0048] Step 1: transport cement clinker from above to the grinding shell 1, and grind the cement clinker multiple times through the cooperation of the grinding shell 1 and the grinding assembly 2 to obtain powder;

[0049] Step 2: After the powder is formed, it falls into the roller mill assembly 6 for further rolling grinding;

[0050] Step 3: Then enter the ball mill assembly 7 for ball milling, and finally output from the output port 8.

[0051] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cement grinding device, characterized in that: include: A grinding shell (1) is evenly provided with angle-adjustable grinding components (2) inside thereof, and the grinding shell (1) and the grinding components (2) cooperate to perform multiple grinding on the incoming cement clinker to obtain powder; An air blowing shell (3) is slidably sleeved up and down on the lower end of the grinding shell (1), and an electric push rod (4) is connected between the grinding shell (1) and the air blowing shell (3); A centralizing frame (5) mounted on the lower end of the air blowing shell (3); A roller mill assembly (6) is installed at the lower end of the central frame (5) and performs rolling grinding operation on the fallen powder through the roller mill assembly (6); A ball mill assembly (7) is connected and installed with the lower end of the roller mill assembly (6); the lower end discharge port of the ball mill assembly (7) is connected via an output port (8), and the output port (8) is supported in position by a bracket; The grinding shell (1) comprises a connecting shell (11), a feed port (12), and a grinding layer (13); the upper end of the connecting shell (11) is provided with the feed port (12); the lower end of the connecting shell (11) is provided with an electric turntable, and the electric turntable is provided with the grinding layer (13); the inner diameter of the grinding layer (13) with a bowl-shaped structure gradually decreases from top to bottom; The air blowing shell (3) comprises a sealing shell (31), a plugging member (32), an air delivery pipe (33), an air blowing pump (34), a plugging head (35), a linkage rod (36) and a connecting ring (37); an electric push rod (4) is connected between the grinding shell (1) and the sealing shell (31); a linkage cavity (9) is provided in the side wall interlayer of the sealing shell (31); a corresponding opening is provided at the upper end of the side wall of the linkage cavity (9); a plugging head (35) slidably arranged in the linkage cavity (9) is connected to the lower end of the linkage rod (36); The upper end of the movable rod (36) is connected to the connecting ring (37), and the connecting ring (37) is fixedly installed at the outer wall position of the grinding shell (1). The docking port (10) corresponding to the corresponding port position is opened in the connecting shell (11). The linkage chamber (9) and the diversion chamber opened by the blocking member (32) are connected to each other and an air delivery pipe (33) made of a rigid material is installed. The blocking member (32) at the initial position blocks the discharge port opened in the middle of the grinding layer (13). The air blowing pump (34) connected to the linkage chamber (9) is installed on the central frame (5). The upper end of the plugging member (32) is a conical head structure, and the upper end of the side wall of the plugging member (32) is evenly provided with spray holes, and the spray holes are connected to the diversion cavity; The roller grinding assembly (6) comprises a collecting frame, a motorized roller (61), an inner core roller (62), an outer core roller (63), a pressure assembly (64), a grinding block 1 (65), and a grinding block 2 (66). The collecting frame is mounted at the lower end of the central frame (5). A motorized roller (61) is rotatably arranged in the middle of the collecting frame. An inner core roller (62) is sleeved on the outer side of the motorized roller (61). An outer core roller (63) is arranged on the outer side of the inner core roller (62). An inner pressure groove (14) is evenly formed on the outer wall of the outer core roller (63) along its circumference. A rotatable pressure assembly (64) is arranged on the inner pressure groove (14). The outer core roller (63) is located between the grinding block 1 (65) and the grinding block 2 (66). The grinding block 1 (65) and the grinding block 2 (66) are arranged on the left and right sides. The grinding block 1 (65) is connected to the left inner wall of the collecting frame through the motorized slider 1, and the grinding block 2 (66) is connected to the right inner wall of the collecting frame through the motorized slider 2.

2. A cement grinding device according to claim 1, characterized in that: The grinding assembly (2) comprises a driving base (21), a grinding roller (22), and a protruding unit (23); the driving base (21) is mounted on the outer wall of the connecting shell (11); one end of the driving base (21) is connected to the grinding roller (22); the driving base (21) can drive the grinding roller (22) to adjust the angle and rotate axially; the protruding unit (23) is slidably arranged in a hidden groove provided in the grinding roller (22) and is used in conjunction with the driving base (21).

3. A cement grinding device according to claim 2, characterized in that: The driving base (21) comprises a rotating roller (211), a connecting rod (212), a motor group (213), a sliding member (214), an internal spring (215) and an extrusion block (216); the rotating roller (211) is arranged on the outer wall of the connecting shell (11) through an ear seat; the rotating roller (211) is sleeved with a connecting rod (212); the middle part of the connecting rod (212) is located in an angle groove opened in the connecting shell (11); the connecting rod (212) and the angle groove are sealed by a sealing cover; the inner end of the connecting rod (212) is connected to the motor group (213); the output shaft of the motor group (213) is connected to one end of a sliding member (214) having a square cross-section; the sliding member (214) is horizontally slidably arranged in an active cavity opened in the grinding roller (22); an internal spring (215) is connected between the sliding member (214) and the active cavity; and extrusion blocks (216) are evenly arranged on the outer wall of the sliding member (214) along its circumference.

4. A cement grinding device according to claim 3, characterized in that: The protrusion unit (23) comprises a protrusion (231) and an extrusion head (232); the protrusion (231) is slidably arranged in the hidden groove, and the protrusion (231) and the hidden groove are elastically connected; an extrusion head (232) is arranged at one end of the protrusion (231) close to the extrusion block (216); the extrusion head (232) and the extrusion block (216) are used in an extrusion-coordinated manner.

5. A cement grinding device according to claim 1, characterized in that: The outer wall of the inner core roller (62) is uniformly provided with an arc-shaped groove (15) along its circumference, the inner diameter wall of the outer core roller (63) is uniformly provided with an arc-shaped slider (67) along its circumference, the arc-shaped slider (67) is slidably set in the arc-shaped groove (15), and the arc-shaped slider (67) and the arc-shaped groove (15) are elastically connected, the outer wall of the outer core roller (63) is uniformly provided with a resistance-enhancing layer (68) along its circumference, and the arc-shaped inner wall of the grinding block (65) is uniformly provided with a resistance-enhancing pad (69), and the resistance-enhancing pad (69) and the resistance-enhancing layer (68) are used in conjunction with each other.

6. A cement grinding device according to claim 1, characterized in that: The pressurizing component (64) comprises a pressurizing grid plate (641), a grinding plate (642), and a fixing rod (643); one end of the pressurizing grid plate (641) is connected to the inner pressure groove (14) by a pin shaft; the pressurizing grid plate (641) and the inner pressure groove (14) are elastically connected; and the fixing rod (643) is fixedly connected between the grinding plate (642) located in the inner pressure groove (14) and the inner core roller (62).

7. A cement grinding device according to claim 1, characterized in that: An air blowing unit is arranged inside the second grinding block (66), and the air blowing unit comprises an air pump (691) and an air blowing pipe (692). The air blowing pipe (692) is installed at the arc-shaped inner wall position of the second grinding block (66), and the air pump (691) connected to the air pump (691) is installed in the second grinding block (66).

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