Cement production ball mill device

Abstract

The utility model provides a cement production ball mill device relates to ball mill device technical field, including humidity transducer, humidity transducer signal connection has microprocessor, microprocessor signal connection has the heating material guide groove that carries out the drying of cement raw material, the top of heating material guide groove is provided with the negative pressure exhaust group that discharges moisture, the utility model has the advantages of: setting up the humidity sensor that carries out humidity detection to cement raw material in the feed bin inside ball mill device, according to the signal feedback control heating material guide groove and work of humidity sensor, can utilize heating material guide groove to the cement raw material of feeding bin inside convey and heat, control negative pressure exhaust group simultaneously and export the steam of heating in the feed bin, can reduce the humidity of cement raw material to a certain extent, avoid sticking in the process of ball mill in the lining or the surface of grinding body, can effectively guarantee the stability of ball mill, improve the convenience of ball mill device use.

Description

Technical Field

[0001] This utility model relates to the field of ball milling equipment technology, and in particular to a ball milling equipment for cement production. Background Technology

[0002] Ball mills are key equipment for further pulverizing materials after they have been crushed. They are widely used in the cement production industry. In the cement production process, a large amount of limestone is required. The crushed limestone particles need to be fed into the ball mill for pulverization. Moreover, due to the large volume of cement production, the ball mill needs to be in operation for a long time to ensure timely processing of limestone raw materials and to ensure the normal operation of cement production.

[0003] However, existing ball milling devices are usually not convenient for detecting the moisture content of the materials being milled. When the moisture content of some raw materials is high, the materials tend to stick to the liner and grinding media, affecting the grinding effect and the subsequent use of the ball milling device. Utility Model Content

[0004] Therefore, the purpose of this utility model is to propose a ball mill device for cement production, so as to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides a cement production ball mill device, including a ball mill cylinder driven by a motor for grinding cement raw materials. The inner wall of the ball mill cylinder is lined with a liner and grinding media is placed inside. A feed hopper for conveying cement raw materials is fixedly installed at one end of the ball mill cylinder. A humidity sensor for detecting the humidity of the cement raw materials is fixedly installed inside the feed hopper. The humidity sensor is signal-connected to a microprocessor for information processing and automated control. The microprocessor is signal-connected to a heated feed trough for drying the cement raw materials. A negative pressure exhaust fan assembly for discharging moisture is provided above the heated feed trough. A protective partition for isolating the cement raw materials is provided at the bottom of the negative pressure exhaust fan assembly. A paddle for moving the cement raw materials is provided below the protective partition. A fastening block for fixing the cement raw materials is fixedly installed inside the paddle.

[0006] Preferably, in any of the above embodiments, the ball mill cylinder is provided with ball mill supports at both ends, a drive motor unit for driving the ball mill cylinder is fixedly installed at one end of the ball mill support, the feed bin is fixedly installed at the top of the ball mill support, and a spiral blade for driving the feeding of cement raw materials is fixedly installed inside the feed bin, and the spiral blade has an installation groove for fixing the baffle plate inside.

[0007] The above technical solution is adopted as follows: The ball mill cylinder (Q355B steel welded and formed, with high-chromium cast iron lining plates on the inner wall) is mounted on the ball mill support (Q235 steel material) at both ends through self-aligning roller bearings. The drive motor set (dual motor drive) is fixed at one end of the support. The feed hopper (stainless steel material) is fixed to the top of the support through a flange. The spiral blades (stainless steel material, connected to the motor) are welded inside. The blades have mounting grooves. The Q355B steel ball mill cylinder is resistant to the impact of the grinding media. The high-chromium cast iron lining plates are wear-resistant, extending the service life of the inner wall of the cylinder. The ball mill support is rigid and can withstand the weight of the ball mill cylinder and grinding media without deformation. The dual motor drive provides sufficient torque to ensure that the ball mill cylinder rotates smoothly when fully loaded. The spiral blades convey cement raw materials (such as limestone particles) to the ball mill cylinder at a uniform speed through rotation, avoiding the accumulation of raw materials. The mounting grooves provide a fixed position for the push plate to adapt to the needs of raw material pushing.

[0008] Preferably, in any of the above embodiments, the humidity sensor is located above the spiral blades, and the humidity sensor is located at the feed end of the feed hopper.

[0009] The above technical solution is adopted: The humidity sensor (capacitive type, connected to the microprocessor signal) is fixed to the feeding end of the feeding hopper by a bracket, located above the spiral blades, with the detection end facing the raw material falling path. The sensor surface is covered with a polytetrafluoroethylene protective film to prevent raw material dust contamination. The capacitive sensor can quickly detect the humidity of cement raw materials, ensuring that the detection is completed before the raw materials enter the heating guide trough. Located at the feeding end, the humidity of the raw materials can be judged in advance, allowing reaction time for the subsequent drying process. The protective film is resistant to cement dust corrosion, preventing the sensor detection end from being covered by dust. The detection data is transmitted to the microprocessor in real time, providing a basis for the start and stop of the heating guide trough and the negative pressure exhaust group.

[0010] Preferably, in any of the above embodiments, the heating guide trough includes a heat-insulating fixing seat for support and fixation, a heating wire connected to a microprocessor signal, and a heating material plate made of thermally conductive metal material. The heat-insulating fixing seat is fixedly installed at the bottom of the middle section of the feed hopper. The heating wire is fixedly installed inside the heat-insulating fixing seat, and the heating material plate fixedly installed with the heat-insulating fixing seat is attached to one side of the heating wire.

[0011] The above technical solution is adopted as follows: the heat-insulating fixing seat (ceramic material) of the heating guide trough is fixed to the bottom of the middle section of the feeding hopper with bolts. The heating wire (nickel-chromium alloy material, connected to the microprocessor signal) is embedded in the fixing seat and distributed in a serpentine pattern. The heating material plate (304 stainless steel material) is attached to one side of the heating wire and the surface is polished. The ceramic heat-insulating fixing seat blocks the heat transfer to the feeding hopper and avoids the deformation of the hopper. The nickel-chromium alloy heating wire has high heating efficiency and can raise the temperature of the heating material plate (adjusted according to the humidity of the raw material) to dry the raw material. The stainless steel heating material plate has uniform heat conduction and the polished surface reduces the adhesion of raw materials. The heating guide trough and the spiral blade work together so that the raw material comes into contact with the heating material plate during the conveying process, realizing the "conveying-drying" synchronization and improving efficiency.

[0012] Preferably, in any of the above embodiments, the negative pressure exhaust system includes a support and protection feed top cover, a powerful fan connected to a microprocessor signal, and a protective baffle for adjusting the air outlet direction. The feed top cover is fixedly installed in the middle of the feed hopper. A powerful fan is fixedly installed inside the feed top cover. A protective baffle fixedly installed on one side of the air outlet end of the powerful fan is provided with a baffle fixedly installed with the feed top cover. An oblique air outlet is opened at the top of the feed top cover on one side of the air outlet end of the powerful fan. The protective baffle is fixedly installed at the bottom of the feed top cover and below the air inlet end of the powerful fan. A plurality of linearly arrayed ventilation slots are opened inside the protective baffle.

[0013] The above technical solution is adopted as follows: the feed top cover (made of stainless steel) of the negative pressure exhaust group is fixed to the top of the middle section of the feed hopper with bolts, and the powerful fan (centrifugal type, connected to the microprocessor signal) is fixed inside the top cover. The feed top cover provides a fixed space for the fan and prevents raw material dust from overflowing from the top of the feed hopper. The powerful fan generates negative pressure, which draws the water vapor evaporated from the heated guide trough into the ventilation slot and discharges it through the oblique air outlet to avoid water vapor condensation in the feed hopper. The protective baffle adjusts the air outlet angle to ensure that the water vapor is discharged away from the feed hopper inlet. The protective partition blocks the raw material from entering the fan (the ventilation slot aperture is smaller than the raw material particle size) while allowing water vapor to pass through.

[0014] Preferably, in any of the above embodiments, the lever includes a lever fixing plate for connection and fixation, a pneumatic telescopic rod connected to a microprocessor signal, and a movable plate for levering the cement raw materials. The lever fixing plate is inserted into the interior of the spiral blades. A pneumatic telescopic rod is fixedly installed at one end of the lever fixing plate, and a movable plate located inside the feed hopper is fixedly installed at one end of the pneumatic telescopic rod.

[0015] The above technical solution is adopted as follows: the toggle plate (made of stainless steel) is fixed to the mounting groove of the spiral blade by plugging it in; the pneumatic telescopic rod (a miniature cylinder connected to the microprocessor signal) is welded to one end of the fixed plate; the movable plate (made of ABS with a wear-resistant rubber layer on the surface) is fixed to the output end of the telescopic rod and can extend and retract inside the feeding hopper; the toggle plate provides fixed support for the pneumatic telescopic rod; the plug-in installation facilitates disassembly and maintenance; the pneumatic telescopic rod pushes the movable plate to extend and retract; when extended, it can disperse the raw materials accumulated in the feeding hopper, increase the contact area between the raw materials and the heating guide trough, and improve drying efficiency; the ABS movable plate is lightweight, avoiding increasing the load on the spiral blade; the wear-resistant rubber layer reduces friction with the raw materials and extends the life of the movable plate.

[0016] Preferably, in any of the above embodiments, the fastening block includes a compression spring that provides a fastening force and a locking block that engages and fastens the actuating fixed plate. The compression spring is fixedly installed inside the actuating fixed plate, and one end of the compression spring is fixedly installed with a locking block that moves inside the actuating fixed plate. The locking block engages inside the spiral blade.

[0017] The above technical solution is adopted as follows: the compression spring (made of piano wire) of the fastening block is fixed to the blind hole inside the toggle plate, and the locking block (made of nylon) is fixed to one end of the spring. It can extend and retract within the blind hole. The locking block pops out under the action of the spring and engages in the slot of the spiral blade mounting groove. The compression spring provides continuous elastic force to push the locking block to engage in the spiral blade slot, preventing the toggle plate from loosening when the spiral blade rotates. The nylon locking block is soft and avoids scratching the spiral blade. The rounded design makes it easy for the fixing plate to be inserted into the mounting groove. The engaging structure enables the toggle plate to be quickly fixed and is easy to disassemble, adapting to maintenance needs.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. A humidity sensor is installed inside the feed hopper of the ball mill to detect the moisture content of the cement raw materials. The heating guide chute is controlled based on the signal feedback from the humidity sensor. The heating guide chute can be used to heat the cement raw materials conveyed inside the feed hopper. At the same time, the negative pressure exhaust group is controlled to remove the heated water vapor from the feed hopper. This can reduce the moisture content of the cement raw materials to a certain extent, preventing them from sticking to the liner or grinding media surface during the ball milling process. This can effectively ensure the stability of the ball mill and improve the ease of use of the ball mill device.

[0019] An adjustable lever is installed inside the feed hopper. The lever is controlled to extend and retract based on the detection signal from the humidity sensor. The extended lever is used to move the cement raw material with high humidity, thereby increasing the heating area of ​​the cement raw material and improving the heating efficiency of the cement raw material.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model; Figure 2 This is a cross-sectional structural diagram of the feed hopper according to an embodiment of the present utility model; Figure 3 According to the embodiments of this utility model Figure 2 Enlarged structural diagram at point A; Figure 4 This is a cross-sectional structural diagram of the heating guide groove according to an embodiment of the present utility model; Figure 5 This is a cross-sectional structural diagram of the lever plate according to an embodiment of the present invention. The components are: 1-ball mill cylinder, 2-feed hopper, 3-humidity sensor, 4-heated guide trough, 41-heat insulation fixing seat, 42-heating wire, 43-heating material plate, 5-negative pressure exhaust group, 51-feed top cover, 52-powerful fan, 53-protective baffle, 6-protective partition, 7-paddle plate, 71-paddle fixing plate, 72-pneumatic telescopic rod, 73-moving plate, 8-fastening block, 81-compression spring, 82-locking block, 9-spiral blade. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0023] like Figure 1-5 As shown in the figure, a cement production ball mill device according to an embodiment of the present invention includes a ball mill cylinder 1 driven by a motor for grinding cement raw materials. The inner wall of the ball mill cylinder 1 is lined with a liner and the grinding medium is placed inside. A feed hopper 2 for conveying cement raw materials is fixedly installed at one end of the ball mill cylinder 1. A humidity sensor 3 for detecting the humidity of cement raw materials is fixedly installed inside the feed hopper 2. The humidity sensor 3 is connected to a microprocessor for information processing and automatic control. The microprocessor is connected to a heating guide trough 4 for drying cement raw materials. A negative pressure exhaust fan group 5 for discharging moisture is provided above the heating guide trough 4. A protective partition 6 for isolating cement raw materials is provided at the bottom of the negative pressure exhaust fan group 5. A paddle 7 for moving cement raw materials is provided below the protective partition 6. A fastening block 8 for fixing the paddle 7 is fixedly installed inside the paddle 7.

[0024] Preferably, either of the above-mentioned solutions is provided with a ball mill support at both ends of the ball mill cylinder 1, a drive motor unit for driving the ball mill cylinder 1 is fixedly installed at one end of the ball mill support, the feed bin 2 is fixedly installed at the top of the ball mill support, and a spiral blade 9 for driving the cement raw material to be fed is fixedly installed inside the feed bin 2, and the spiral blade 9 has an installation groove for fixing the baffle plate 7 inside.

[0025] The above technical solution is adopted: the ball mill cylinder 1 (Q355B steel welded and formed, with high chromium cast iron lining plate on the inner wall) is installed on the ball mill support (Q235 steel material) at both ends by self-aligning roller bearings. The drive motor set (dual motor drive) is fixed at one end of the support. The feed hopper 2 (stainless steel material) is fixed to the top of the support by flange. The spiral blades 9 (stainless steel material, connected to the motor) are welded inside. The blades have mounting grooves. The Q355B steel ball mill cylinder is resistant to the impact of the grinding media. The high chromium cast iron lining plate is wear-resistant and extends the service life of the inner wall of the cylinder. The ball mill support is rigid and can withstand the weight of the ball mill cylinder and the grinding media without deformation. The dual motor drive provides sufficient torque to ensure that the ball mill cylinder rotates smoothly when fully loaded. The spiral blades 9 convey cement raw materials (such as limestone particles) to the ball mill cylinder at a uniform speed by rotating, avoiding the accumulation of raw materials. The mounting groove provides a fixed position for the push plate 7 to adapt to the raw material pushing requirements.

[0026] Based on the principle of grinding media impact, when the ball mill rotates, the internal grinding steel balls rise with the cylinder wall and then fall, impacting and grinding the raw materials. The drive motor unit reduces the speed and increases the torque through the reducer to meet the low-speed, high-torque requirements of the ball mill. The spiral blades, based on the spiral conveying principle, generate axial thrust by rotating the blades, conveying the raw materials from the feed hopper to the ball mill. The conveying efficiency is positively correlated with the speed. Before starting, check the amount of grinding steel balls in the ball mill 1 to ensure that the drive motor unit and the reducer are properly connected. Start the drive motor, and the ball mill rotates after being reduced in speed by the reducer. At the same time, start the spiral blade 9 motor to feed cement raw materials from the inlet of the feed hopper 2. The rotating blades push the raw materials towards the ball mill. After entering the ball mill, the raw materials are crushed under the impact of the steel balls. During operation, the spiral blade speed is adjusted by the frequency converter to control the feed rate. The wear of the liner is checked regularly, and it is replaced when the wear exceeds the threshold. After shutdown, clean the residual raw materials in the feed hopper.

[0027] Preferably, in any of the above schemes, the humidity sensor 3 is located above the spiral blade 9, and the humidity sensor 3 is located at the feed end of the feed hopper 2.

[0028] The above technical solution is adopted: the humidity sensor 3 (capacitive type, connected to the microprocessor signal) is fixed to the feeding end of the feeding hopper 2 by a bracket, located above the spiral blade 9, with the detection end facing the raw material falling path. The sensor surface is covered with a polytetrafluoroethylene protective film to prevent raw material dust contamination. The capacitive sensor can quickly detect the humidity of cement raw materials, ensuring that the detection is completed before the raw materials enter the heating guide tank 4. Located at the feeding end, the humidity of the raw materials can be judged in advance, allowing reaction time for the subsequent drying process. The protective film is resistant to cement dust corrosion, preventing the sensor detection end from being covered by dust. The detection data is transmitted to the microprocessor in real time, providing a basis for the start and stop of the heating guide tank 4 and the negative pressure exhaust group 5.

[0029] Based on the principle of capacitive humidity detection, the capacitance between the sensor detection end and the raw material changes with the humidity of the raw material (the higher the humidity, the greater the capacitance). The capacitance is converted into a current signal. The microprocessor triggers subsequent drying actions by comparing the detected humidity with a preset threshold. When the raw material falls from the inlet of the feed hopper 2, it first passes through the detection area of ​​the humidity sensor 3. The sensor completes humidity detection within 1 second and transmits the data to the microprocessor. If the microprocessor determines that the humidity exceeds the threshold, it immediately sends a start command to the heating guide trough 4 and the negative pressure exhaust group 5. If the detected humidity is lower than the threshold, the microprocessor does not start the drying system, and the raw material is directly conveyed to the ball mill cylinder by the spiral blades. The sensor is calibrated periodically with a standard humidity generator, and the dust on the surface of the protective film is cleaned. The microprocessor uses a digital filtering algorithm to process the sensor data, remove vibration noise, and sets dual humidity thresholds to avoid frequent start-stop.

[0030] Preferably, the heating guide trough 4 includes a heat-insulating fixing seat 41 for support and fixation, a heating wire 42 connected to the microprocessor signal, and a heating material plate 43 made of thermally conductive metal material. The heat-insulating fixing seat 41 is fixedly installed at the bottom of the middle section of the feed hopper 2. The heating wire 42 is fixedly installed inside the heat-insulating fixing seat 41, and the heating material plate 43 fixedly installed with the heat-insulating fixing seat 41 is attached to one side of the heating wire 42.

[0031] The above technical solution is adopted as follows: the heat-insulating fixing seat 41 (ceramic material) of the heating guide trough 4 is fixed to the bottom of the middle section of the feeding hopper 2 by bolts. The heating wire 42 (nickel-chromium alloy material, connected to the microprocessor signal) is embedded in the fixing seat and distributed in a serpentine shape. The heating material plate 43 (304 stainless steel material) is attached to one side of the heating wire and the surface is polished. The ceramic heat-insulating fixing seat blocks the heat transfer to the feeding hopper 2 and avoids the deformation of the hopper. The nickel-chromium alloy heating wire has high heating efficiency and can raise the temperature of the heating material plate (adjusted according to the humidity of the raw material) to dry the raw material. The stainless steel heating material plate conducts heat evenly, and the polished surface reduces the adhesion of raw materials. The heating guide trough and the spiral blade work together so that the raw material comes into contact with the heating material plate during the conveying process, realizing the "conveying-drying" synchronization and improving efficiency.

[0032] Based on the principle of resistance heating, the heating wire 42 generates Joule heat after being energized, which is transferred to the heating plate 43 through heat conduction. When the raw material comes into contact with the heating plate, heat is transferred to the raw material, evaporating the internal moisture. The heat-insulating fixing seat is based on the principle of thermal barrier, and its low thermal conductivity reduces heat loss. The microprocessor monitors the temperature of the heating plate through the temperature sensor to achieve constant temperature control. After receiving a high humidity signal from the humidity sensor 3, the microprocessor energizes the heating wire 42, and the temperature of the heating plate 43 gradually increases. The spiral blades 9 transport the raw material to the top of the heating plate, where it comes into contact with the plate and is heated, causing moisture to evaporate. At the same time, the negative pressure exhaust group 5 is activated to expel water vapor. When the temperature sensor detects that the plate exceeds 120°C, the microprocessor reduces the power of the heating wire. When the raw material humidity drops to 1.5%, the heating wire is de-energized, and the plate cools down naturally. The insulation resistance of the heating wire is checked periodically, and the raw material adhering to the surface of the heating plate is cleaned. The microprocessor uses a PID algorithm to control the power of the heating wire and adjusts it when the temperature deviation exceeds the threshold.

[0033] Preferably, the negative pressure exhaust group 5 includes a feed top cover 51 for support and protection, a powerful fan 52 connected to a microprocessor signal, and a protective baffle 53 for adjusting the air outlet direction. The feed top cover 51 is fixedly installed in the middle of the feed hopper 2. The powerful fan 52 is fixedly installed inside the feed top cover 51. The protective baffle 53, which is fixedly installed on one side of the air outlet end of the powerful fan 52, is provided. The top of the feed top cover 51 has an oblique air outlet located on one side of the air outlet end of the powerful fan 52. The protective baffle 6 is fixedly installed at the bottom of the feed top cover 51 and located below the air inlet end of the powerful fan 52. The interior of the protective baffle 6 has a plurality of linear array ventilation slots.

[0034] The above technical solution is adopted: the feed top cover 51 (made of stainless steel) of the negative pressure exhaust group 5 is fixed to the top of the middle section of the feed hopper 2 by bolts, and the powerful fan 52 (centrifugal type, connected to the microprocessor signal) is fixed inside the top cover. The feed top cover 51 provides a fixed space for the fan and prevents raw material dust from overflowing from the top of the feed hopper. The powerful fan generates negative pressure, which draws the water vapor evaporated from the heating guide trough 4 into the ventilation trough and discharges it through the oblique air outlet to avoid water vapor condensation in the feed hopper. The protective baffle 53 adjusts the air outlet angle to ensure that the water vapor is discharged away from the feed hopper inlet. The protective partition 6 blocks the raw material from entering the fan (the ventilation trough aperture is smaller than the raw material particle size) while allowing water vapor to pass through.

[0035] Based on the principle of negative pressure ventilation, the rotation of the powerful fan creates negative pressure at the air inlet, drawing water vapor into the ventilation slots of the protective partition. After being pressurized by the fan, the water vapor is discharged from the air outlet. The angled air outlet prevents dust from being carried out with the airflow. The ventilation slots of the protective partition are based on the principle of sieving, blocking raw material particles while providing a channel for water vapor. When the heating guide trough 4 is started, the microprocessor controls the powerful fan 52 to start, generating negative pressure. The water vapor generated by heating rises and is drawn into the fan through the ventilation slots of the protective partition 6. After being pressurized by the fan, the airflow impacts the protective baffle 53, which guides the airflow to the angled air outlet and discharges it from the feed hopper 2. According to the feedback from the humidity sensor, when the raw material humidity drops to the threshold, the fan is turned off. The ventilation slots are cleaned regularly, and the wear of the fan impeller is checked.

[0036] Preferably, in any of the above embodiments, the lever 7 includes a lever fixing plate 71 for connection and fixation, a pneumatic telescopic rod 72 connected to a microprocessor signal, and a movable plate 73 for levering the cement raw materials. The lever fixing plate 71 is inserted into the interior of the spiral blade 9. The pneumatic telescopic rod 72 is fixedly installed at one end of the lever fixing plate 71, and the movable plate 73 located inside the feed hopper 2 is fixedly installed at one end of the pneumatic telescopic rod 72.

[0037] The above technical solution is adopted as follows: the actuating fixing plate 71 (stainless steel material) of the actuating plate 7 is fixed to the mounting groove of the spiral blade 9 by plugging in; the pneumatic telescopic rod 72 (miniature cylinder, connected to the microprocessor signal) is welded to one end of the fixing plate; the movable plate 73 (ABS material, with a wear-resistant rubber layer on the surface) is fixed to the output end of the telescopic rod and can extend and retract inside the feeding hopper 2. The actuating fixing plate 71 provides fixed support for the pneumatic telescopic rod. The plug-in installation facilitates disassembly and maintenance. The pneumatic telescopic rod pushes the movable plate 73 to extend and retract. When extended, it can disperse the raw materials accumulated in the feeding hopper, increase the contact area between the raw materials and the heating guide trough 4, and improve the drying efficiency. The ABS movable plate is lightweight, avoiding increasing the load on the spiral blades. The wear-resistant rubber layer reduces friction with the raw materials and extends the life of the movable plate.

[0038] Based on the pneumatic drive principle, compressed air drives the piston rod of the pneumatic telescopic rod 72 to extend and retract, which in turn moves the movable plate 73. When the movable plate extends, it rotates synchronously with the spiral blades, which agitates the raw materials and breaks up the clumps. The rubber layer, based on the principle of elastic deformation, undergoes slight deformation when in contact with the raw materials to prevent excessive crushing. After receiving the high humidity signal from the humidity sensor 3, the microprocessor controls the pneumatic telescopic rod 72 to extend, and the movable plate 73 enters the raw material conveying path. When the spiral blades 9 rotate, the movable plate rotates synchronously with the blades, agitating the raw materials and breaking up the clumps. After the raw materials come into full contact with the heated guide trough 4, the moisture evaporates quickly. When the humidity of the raw materials decreases, the telescopic rod retracts, and the movable plate leaves the raw material path. The sealing of the pneumatic telescopic rod should be checked regularly, and the worn rubber layer should be replaced.

[0039] Preferably, the fastening block 8 includes a compression spring 81 that provides a fastening force and a locking block 82 that engages and fastens the actuating fixing plate 71. The compression spring 81 is fixedly installed inside the actuating fixing plate 71, and a locking block 82 that moves inside the actuating fixing plate 71 is fixedly installed at one end of the compression spring 81. The locking block 82 engages inside the spiral blade 9.

[0040] The above technical solution is adopted: the compression spring 81 (made of piano wire) of the fastening block 8 is fixed in the blind hole inside the toggle fixing plate 71, and the locking block 82 (made of nylon) is fixed to one end of the spring and can extend and retract in the blind hole. The locking block pops out under the action of the spring and engages in the slot of the spiral blade 9 mounting groove. The compression spring 81 provides continuous elastic force to push the locking block 82 to engage in the spiral blade slot, preventing the toggle plate 7 from loosening when the spiral blade rotates. The nylon locking block is soft and avoids scratching the spiral blade. The rounded design makes it easy for the fixing plate to be inserted into the mounting groove. The engaging structure enables the toggle plate to be quickly fixed and is easy to disassemble, adapting to maintenance needs.

[0041] Based on the principle of spring force, the compression spring pushes the locking block out in its natural state, inserting it into the slot of the spiral blade to form a mechanical lock. During disassembly, external force presses on the locking block, the spring compresses, and the locking block retracts into the fixed plate, allowing the fixed plate to be pulled out from the mounting slot. The low coefficient of friction of the nylon locking block reduces friction with the mounting slot, facilitating insertion and removal. When installing the dial plate 7, the dial plate 71 is aligned with the mounting slot of the spiral blade 9 and pushed into the slot. The locking block 82 is squeezed by the inner wall of the mounting slot, compressing the spring 81 and retracting into the fixed plate. When the fixed plate is fully inserted, the locking block reaches the slot position, the spring resets, and pushes the locking block out, engaging the slot and completing the fixation. During disassembly, a tool is used to press on the locking block, the spring compresses, the locking block retracts, and the fixed plate can be pulled out. Regularly check the elasticity of the compression spring, replace aging springs, and clean the surface of the locking block.

[0042] The working principle of the cement production ball mill device of this utility model is as follows: After startup, the drive motor unit drives the ball mill cylinder to rotate at a set speed via a reducer. Simultaneously, the spiral blade 9 motor starts, and cement raw materials are fed into the feed hopper 2. As the raw materials fall, the humidity is first detected by the humidity sensor 3 at the feed end, and the data is transmitted to the microprocessor in real time. If the humidity exceeds the threshold, the microprocessor immediately activates the heating wire 42 of the heating guide trough 4, raising the temperature of the heating plate 43 to the target temperature. Simultaneously, the powerful fan 52 of the negative pressure exhaust group 5 is activated, generating negative pressure. The spiral blade 9 then conveys the raw materials above the heating plate. The microprocessor controls the toggle plate 7... The pneumatic telescopic rod 72 extends, and the movable plate 73 rotates with the blades to move the raw material, breaking up clumps to increase the heating area. The water vapor evaporated by the heated raw material is drawn into the fan through the ventilation slot of the protective partition 6 and then discharged through the oblique air outlet. If the humidity is below the threshold, the microprocessor does not start the drying system and the movable plate. The raw material is directly transported to the ball mill by the spiral blades. After entering the ball mill, the raw material is crushed under the impact and grinding action of the grinding steel balls. All structures work together throughout the process. Through the process of "humidity detection-drying / direct delivery-grinding", the high-humidity raw material is prevented from sticking together, thus ensuring the ball mill efficiency.

[0043] Compared with the prior art, the present invention has the following advantages: 1. A humidity sensor 3 is installed inside the feed hopper 2 of the ball mill device to detect the humidity of the cement raw materials. The heating guide trough 4 is controlled to work based on the signal feedback from the humidity sensor 3. The heating guide trough 4 can be used to heat the cement raw materials conveyed inside the feed hopper 2. At the same time, the negative pressure exhaust group 5 is controlled to exhaust the heated water vapor out of the feed hopper 2. This can reduce the humidity of the cement raw materials to a certain extent and prevent them from sticking to the liner or grinding surface during the ball milling process. This can effectively ensure the stability of the ball mill and improve the convenience of using the ball mill device.

[0044] 2. An adjustable lever 7 is installed inside the feeding hopper. The lever 7 is controlled to extend and retract based on the detection signal from the humidity sensor 3. The extended lever 7 is used to move the cement raw material with high humidity, thereby increasing the heating area of ​​the cement raw material and improving the heating efficiency of the cement raw material.

Claims

1. A ball mill apparatus for cement production, comprising a ball mill cylinder (1) for grinding cement raw materials and driven by a motor, the inner wall of the ball mill cylinder (1) being lined with a liner and containing grinding media, and a feed hopper (2) for conveying cement raw materials being fixedly installed at one end of the ball mill cylinder (1), characterized in that: The feed hopper (2) is equipped with a humidity sensor (3) for detecting the humidity of cement raw materials. The humidity sensor (3) is connected to a microprocessor for information processing and automatic control. The microprocessor is connected to a heating guide trough (4) for drying cement raw materials. A negative pressure exhaust fan group (5) for discharging moisture is provided above the heating guide trough (4). A protective partition (6) for isolating cement raw materials is provided at the bottom of the negative pressure exhaust fan group (5). A lever (7) for moving cement raw materials is provided below the protective partition (6). A fastening block (8) for fixing the cement raw materials is fixedly installed inside the lever (7).

2. The cement production ball mill apparatus as described in claim 1, characterized in that: The ball mill cylinder (1) is provided with ball mill brackets at both ends to support it. A drive motor unit for driving the ball mill cylinder (1) is fixedly installed at one end of the ball mill bracket. The feed bin (2) is fixedly installed at the top of the ball mill bracket. A spiral blade (9) for driving the cement raw material to feed is fixedly installed inside the feed bin (2). The spiral blade (9) has an installation groove for fixing the deflector plate (7) inside.

3. A cement production ball mill apparatus as described in claim 2, characterized in that: The humidity sensor (3) is located above the spiral blade (9) and at the feed end of the feed hopper (2).

4. A cement production ball mill apparatus as described in claim 3, characterized in that: The heating guide trough (4) includes a heat-insulating fixing seat (41) for support and fixation, a heating wire (42) for microprocessor signal connection, and a heating material plate (43) made of thermally conductive metal material. The heat-insulating fixing seat (41) is fixedly installed at the bottom of the middle section of the feed hopper (2). The heating wire (42) is fixedly installed inside the heat-insulating fixing seat (41), and the heating material plate (43) fixedly installed with the heat-insulating fixing seat (41) is attached to one side of the heating wire (42).

5. A cement production ball mill apparatus as described in claim 4, characterized in that: The negative pressure exhaust group (5) includes a feed top cover (51) for support and protection, a powerful fan (52) connected to a microprocessor signal, and a protective baffle (53) for adjusting the air outlet direction. The feed top cover (51) is fixedly installed in the middle of the feed hopper (2). The powerful fan (52) is fixedly installed inside the feed top cover (51). A protective baffle (53) is fixedly installed on one side of the air outlet end of the powerful fan (52) and fixedly installed with the feed top cover (51). An oblique air outlet is opened at the top of the feed top cover (51) on one side of the air outlet end of the powerful fan (52). The protective baffle (6) is fixedly installed at the bottom of the feed top cover (51) and below the air inlet end of the powerful fan (52). Several linear array ventilation slots are opened inside the protective baffle (6).

6. A cement production ball mill apparatus as described in claim 5, characterized in that: The lever (7) includes a lever fixing plate (71) for connection and fixation, a pneumatic telescopic rod (72) for microprocessor signal connection, and a movable plate (73) for levering cement raw materials. The lever fixing plate (71) is inserted into the interior of the spiral blade (9). A pneumatic telescopic rod (72) is fixedly installed at one end of the lever fixing plate (71), and a movable plate (73) located inside the feed hopper (2) is fixedly installed at one end of the pneumatic telescopic rod (72).

7. A cement production ball mill apparatus as described in claim 6, characterized in that: The fastening block (8) includes a compression spring (81) that provides a fastening force and a locking block (82) that engages and fastens the actuating fixing plate (71). The compression spring (81) is fixedly installed inside the actuating fixing plate (71), and one end of the compression spring (81) is fixedly installed with a locking block (82) that moves inside the actuating fixing plate (71). The locking block (82) engages inside the spiral blade (9).

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