Grinding system for cement production

Abstract

The invention relates to the technical field of cement production equipment, and provides a grinding system for cement production, the grinding system comprises a drying and feeding mechanism, a grinding machine, a driving mechanism and an ultrasonic transducer, the drying and feeding mechanism comprises a dryer and a conveyor which are arranged adjacently, the dryer is provided with an output port, the output port is aligned with the conveyor, the dryer is used for drying materials, and the conveyor is provided with an ultrasonic transducer. The dried materials are output to the conveyor through the output port; the pulverizer is arranged adjacent to the conveyor, and the pulverizer is used for receiving the materials conveyed by the conveyor and pulverizing the materials; the driving mechanism is in transmission connection with the pulverizer; the ultrasonic transducer is arranged on the inner wall of the pulverizer and used for emitting ultrasonic waves so as to further pulverize materials through the cavitation effect and mechanical vibration of the ultrasonic waves. Through cooperation of the pulverizer and the ultrasonic transducer, materials can be rapidly subjected to superfine grinding under the comprehensive action of multiple kinds of energy, grinding is reliable and efficient, and the quality stability of cement is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of cement production equipment, and in particular to a grinding system for cement production. Background Art

[0002] Cement is a basic material in the construction industry, and the grinding process in its production process is crucial. Traditional cement grinding systems have a series of problems that need to be solved when preparing ultrafine cement. For example, conventional grinding systems have great limitations in product particle size control, uneven product particle size distribution, and low grinding efficiency, which affects the quality stability of cement and thus affects the application of cement in high-end construction fields. In addition, the maintenance cost of traditional grinding equipment is high, and frequent equipment maintenance and parts replacement further reduce production efficiency and increase operating costs. In the cement production industry, the grinding process is a major energy consumer and has a key impact on the quality of cement products. Traditional cement grinding systems expose many problems when preparing ultrafine cement. For example, powder. Summary of the invention

[0003] Based on this, the main purpose of the present invention is to provide a grinding system for cement production, which is used to solve at least one of the above problems.

[0004] To achieve the above object, the present invention provides a grinding system for cement production, which is used to quantitatively absorb and extrude a preset liquid. The grinding system for cement production comprises: The drying and feeding mechanism comprises a dryer and a conveyor arranged adjacent to each other, the dryer having an output port, the output port being aligned with the conveyor, the dryer being used to dry the material, and outputting the dried material to the conveyor through the output port; a grinding mill, arranged adjacent to the conveyor, the grinding mill being used to receive the material transmitted by the conveyor and to grind the material; A driving mechanism, drivingly connected to the grinding mill; The ultrasonic transducer is arranged on the inner wall of the grinding mill, and is used for emitting ultrasonic waves to crush the materials through the cavitation effect and mechanical vibration of the ultrasonic waves.

[0005] Optionally, the grinding mill includes a machine body, a grinding disc and an extrusion roller, the grinding disc and the extrusion roller are arranged in the machine body, and the extrusion roller is arranged on the grinding disc, and the driving mechanism is transmission-connected to the grinding disc.

[0006] Optionally, the number of the squeezing rollers is more than two, and the more than two squeezing rollers are arranged on the grinding disc at intervals.

[0007] Optionally, the surface of the squeezing roller is provided with preset textures.

[0008] Optionally, the driving mechanism includes a motor and a reducer in transmission connection, and the reducer is connected to the grinding disc of the grinding mill.

[0009] Optionally, the number of the ultrasonic transducers is more than two, and the more than two ultrasonic transducers are evenly arranged on the inner wall of the grinding mill.

[0010] Optionally, the frequency of the ultrasonic waves emitted by the ultrasonic transducer is 20-100 kHz.

[0011] Optionally, the cement production grinding system also includes a feeding device, which includes a silo and a quantitative feeder. The silo is used to store the material to be ground, one end of the quantitative feeder is connected to the silo, and the other end of the quantitative feeder is connected to the dryer. The quantitative feeder is used to quantitatively transport the material to the dryer.

[0012] Optionally, the grinding system for cement production further comprises a dynamic powder classifier, which is connected to the grinding mill and is used to screen the material crushed by the grinding mill to obtain the material of the required particle size.

[0013] Optionally, the grinding system for cement production further includes a finished product collection box, which is connected to the dynamic powder classifier and is used to collect the material of the required particle size screened by the dynamic powder classifier.

[0014] The advantages of the technical solution of the present invention are as follows: when it is necessary to grind the cement raw materials, the cement raw materials are added into the dryer, the dryer dries the cement raw materials and outputs them to the conveyor, the conveyor transports the dried materials to the grinder, the grinder crushes the materials under the drive of the driving mechanism, and in addition, the ultrasonic transducer emits ultrasonic waves to further crush the materials through the cavitation effect and mechanical vibration of the ultrasonic waves, thereby further refining the materials and reducing the agglomeration of the materials. The present application uses the coordinated cooperation of the grinder and the ultrasonic transducer to enable the materials to be quickly ultra-finely ground under the combined action of multiple energies, the grinding is reliable and efficient, and the quality stability of the cement is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the devices shown in these drawings without paying creative work.

[0016] Figure 1A schematic structural diagram of a grinding system for cement production according to an embodiment; Among them, 100, drying and feeding mechanism; 110, dryer; 111, output port; 120, conveyor; 200, grinding mill; 210, machine body; 211, gas nozzle; 220, grinding disc; 230, extrusion roller; 300, driving mechanism; 310, motor; 320, reducer; 400, ultrasonic transducer; 500, feeding device; 510, silo; 520, quantitative feeder; 600, dynamic powder selector; 700, finished product collection box.

[0017] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes A technical solution, B technical solution, and A and B technical solutions that meet both requirements. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0020] like Figure 1As shown, a grinding system for cement production includes a drying and feeding mechanism 100, a grinding mill 200, a driving mechanism 300 and an ultrasonic transducer 400. The drying and feeding mechanism 100 includes a drying machine 110 and a conveyor 120 arranged adjacent to each other. The drying machine 110 has an output port 111, which is aligned with the conveyor 120. The drying machine 110 is used to dry the material and output the dried material to the conveyor 120 through the output port 111. The grinding mill 200 is arranged adjacent to the conveyor 120, and the grinding mill 200 is used to receive the material transmitted by the conveyor 120 and crush the material. The driving mechanism 300 is connected to the grinding mill 200 in a transmission manner. The ultrasonic transducer 400 is arranged on the inner wall of the grinding mill 200, and the ultrasonic transducer 400 is used to emit ultrasonic waves to further crush the material through the cavitation effect and mechanical vibration of the ultrasonic wave. In this embodiment, the material is cement raw material.

[0021] When it is necessary to grind the cement raw material, the cement raw material is added into the dryer 110, the dryer 110 dries the cement raw material and outputs it to the conveyor 120, the conveyor 120 conveys the dried material to the grinder 200, the grinder 200 crushes the material under the drive of the driving mechanism 300, and in addition, the ultrasonic transducer 400 emits ultrasonic waves to further crush the material through the cavitation effect and mechanical vibration of the ultrasonic wave, thereby further refining the material and reducing the agglomeration of the material. The present application uses the synergy of the grinder 200 and the ultrasonic transducer 400, so that the material can be quickly ultra-finely ground under the combined action of multiple energies, the grinding is reliable and efficient, and the quality stability of the cement is guaranteed.

[0022] refer to Figure 1 The grinding mill 200 includes a body 210, a grinding disc 220 and a squeezing roller 230. The grinding disc 220 and the squeezing roller 230 are arranged in the body 210, and the squeezing roller 230 is arranged on the grinding disc 220. The driving mechanism 300 is connected to the grinding disc 220 in a transmission manner, and the driving mechanism 300 is used to drive the grinding disc 220 to rotate. Specifically, the conveyor 120 evenly feeds the material to the center of the horizontally rotating grinding disc 220, and the material is subjected to the centrifugal force and moves from the center to the periphery. The material is crushed by the squeezing and grinding action of the squeezing roller 230.

[0023] refer to Figure 1 , the number of the squeezing rollers 230 is more than two, and the more than two squeezing rollers 230 are arranged at intervals on the grinding disc 220. Specifically, the more than two squeezing rollers 230 can more reliably crush the material. In this embodiment, the number of the squeezing rollers 230 is two. It can be understood that in other embodiments, the number of the squeezing rollers 230 can be three or more.

[0024] Furthermore, the surface of the squeezing roller 230 is provided with preset patterns. Specifically, the setting of the preset patterns increases the squeezing force and friction force of the squeezing roller 230 on the material. During the squeezing process, the material is crushed under high pressure to form particles with smaller particle size.

[0025] refer to Figure 1 The driving mechanism 300 includes a motor 310 and a reducer 320 which are transmission-connected, and the reducer 320 is connected to the grinding disc 220 of the grinding mill 200 .

[0026] refer to Figure 1 , the number of ultrasonic transducers 400 is more than two, and more than two ultrasonic transducers 400 are evenly arranged on the inner wall of the grinding mill 200. Specifically, more than two ultrasonic transducers 400 can more reliably crush the material. In this embodiment, the number of ultrasonic transducers 400 is two. It is understandable that in other embodiments, the number of ultrasonic transducers 400 can be three or more.

[0027] Furthermore, the frequency of the ultrasonic waves emitted by the ultrasonic transducer 400 is 20-100 kHz.

[0028] refer to Figure 1 The grinding system for cement production further includes a feeding device 500, which includes a silo 510 and a quantitative feeder 520. The silo 510 is used to store materials to be ground, one end of the quantitative feeder 520 is connected to the silo 510, and the other end of the quantitative feeder 520 is connected to the dryer 110. The quantitative feeder 520 is used to quantitatively transport the materials to the dryer 110. Specifically, the quantitative feeder 520 can accurately control the feeding amount of the materials to ensure the stability of the grinding process.

[0029] Furthermore, an electromagnetic coil (not shown) is disposed around the outside of the body 210 of the pulverizer 200. Specifically, when an alternating current of a specific frequency is passed through the electromagnetic coil, an alternating magnetic field is generated in the body 210 of the pulverizer 200, so that the magnetic grinding medium and the material produce additional movement and interaction under the action of the magnetic field, further enhancing the grinding effect. The present application uses the synergy of the pulverizer 200, the electromagnetic coil and the ultrasonic transducer 400 to enable the material to be quickly ultra-finely ground under the combined action of multiple energies, and the grinding is reliable. Compared with the traditional grinding system, the grinding efficiency is increased by more than 50%.

[0030] refer to Figure 1 The grinding system for cement production also includes a dynamic powder classifier 600, which is connected to the grinding mill 200. The dynamic powder classifier 600 is used to screen the material crushed by the grinding mill 200 to obtain the material with the required particle size.

[0031] Specifically, a rotating grading rotor and guide vanes are provided inside the dynamic powder classifier 600. By adjusting the speed of the grading rotor and the angle of the guide vanes, the particle size of the material can be accurately controlled to make the particle size distribution of the material more uniform. For materials that do not meet the particle size requirements, they are mixed with the newly fed materials and returned to the grinding disc 220 to be crushed, thereby forming a circular grinding process to improve the efficiency and reliability of the grinding process.

[0032] Furthermore, a gas nozzle 211 is arranged around the machine body 210, and the gas enters the inner cavity of the mill through the nozzle, swirls upward, and brings the crushed material to the dynamic powder classifier 600 above for powder selection. Specifically, the gas nozzle 211 can be fed with air, hot gas or kiln exhaust gas.

[0033] refer to Figure 1 The cement production grinding system also includes a finished product collection box 700, which is connected to the dynamic powder classifier 600 and is used to collect materials of the required particle size screened by the dynamic powder classifier 600.

[0034] Furthermore, the grinding system for cement production also includes a lubrication mechanism (not shown), which includes a temperature sensor, a pressure sensor and a wear monitoring sensor installed on key components of the grinding mill 200, and an oil supply member and a controller, wherein the controller is used to control the supply amount of the oil supply member according to the detection data of each sensor. The oil supply member is used to contain lubricating oil.

[0035] Furthermore, the grinding system for cement production also includes a flexible vibration reduction mechanism, which includes a multi-layer flexible rubber connector and a vibration reduction spring installed between the components of the grinding system.

[0036] Furthermore, the grinding system for cement production also includes a noise reduction mechanism, which is installed on the body 210 of the grinding machine 200. The noise reduction mechanism actively cancels out the equipment noise by emitting reverse phase sound waves. Specifically, the noise reduction mechanism can monitor the frequency and intensity of the grinding system noise in real time, and automatically adjust the emission parameters of the reverse phase sound waves according to the monitoring data.

[0037] The coordination process of each structure of the cement production grinding system of this application is as follows: When the cement raw materials need to be ground, the cement raw materials in the silo 510 are quantitatively transported to the dryer 110 through the quantitative feeder 520. The dryer 110 dries the cement raw materials and outputs them to the conveyor 120. The conveyor 120 transports the dried materials to the middle of the grinding disc 220 of the grinder 200. The motor 310 drives the grinding disc 220 to rotate through the reducer 320. The materials are affected by the centrifugal force and move from the center to the periphery. The material is crushed by the squeezing and grinding action of multiple squeezing rollers 230. At the same time, multiple ultrasonic transducers 400 emit ultrasonic waves to further crush the material in the grinder 200 through the cavitation effect and mechanical vibration of the ultrasonic waves, thereby further refining the material and reducing the agglomeration of the material. In addition, when an alternating current of a specific frequency is passed into the electromagnetic coil as required, an alternating magnetic field will be generated in the body 210 of the grinder 200, so that the magnetic grinding medium and the material will produce additional movement and interaction under the action of the magnetic field, further enhancing the grinding effect, and then gas is introduced into the gas nozzle 211 arranged around the body 210. The gas enters the inner cavity of the mill through the nozzle, swirls and rises, and brings the crushed material to the dynamic powder selector 600 above for powder selection. The dynamic powder selector 600 screens out materials of the required particle size and transmits the materials of the required particle size to the finished product collection box 700.

[0038] During the operation of the grinding system for cement production, temperature sensors, pressure sensors and wear monitoring sensors monitor the status of key components of the grinding mill 200 in real time, and the controller is used to adjust the supply amount of the oil supply parts according to the detection data of each sensor.

[0039] refer to Figure 1 The cement production grinding system of the present application has the following beneficial effects: The present application uses the coordinated cooperation of the grinding mill 200, the electromagnetic coil and the ultrasonic transducer 400 to enable the material to be quickly ultra-finely ground under the combined action of multiple energies. The grinding is reliable and the grinding efficiency is increased by more than 50% compared with the traditional grinding system.

[0040] The present application uses a dynamic powder selector 600 to mix materials that do not meet the particle size requirements with newly fed materials and return them to the grinding disc 220, thereby achieving secondary grinding, making the particle size distribution of the cement powder more uniform and meeting the strict requirements of high-end buildings on cement quality.

[0041] The provision of the lubrication mechanism, flexible connection and flexible vibration reduction mechanism of the present application effectively reduces the wear and failure frequency of the equipment, reduces the maintenance cost and downtime of the equipment, and improves the continuity and stability of production.

[0042] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent device transformations made using the contents of the present invention's specification and drawings, or direct / indirect applications in other related technical fields, under the inventive concept of the present invention are included in the patent protection scope of the present invention.

Claims

1. A grinding system for cement production, characterized in that: include: The drying and feeding mechanism comprises a dryer and a conveyor arranged adjacent to each other, the dryer having an output port, the output port being aligned with the conveyor, the dryer being used to dry the material, and outputting the dried material to the conveyor through the output port; a grinding mill, arranged adjacent to the conveyor, the grinding mill being used to receive the material transmitted by the conveyor and to grind the material; A driving mechanism, drivingly connected to the grinding mill; The ultrasonic transducer is arranged on the inner wall of the grinding mill, and is used for emitting ultrasonic waves to crush the materials through the cavitation effect and mechanical vibration of the ultrasonic waves.

2. The grinding system for cement production according to claim 1, characterized in that: The grinding mill comprises a machine body, a grinding disc and an extrusion roller. The grinding disc and the extrusion roller are arranged in the machine body, and the extrusion roller is arranged on the grinding disc. The driving mechanism is transmission-connected with the grinding disc.

3. The grinding system for cement production according to claim 2, characterized in that: The number of the squeezing rollers is more than two, and the more than two squeezing rollers are arranged at intervals on the grinding disc.

4. The grinding system for cement production according to claim 2, characterized in that: The surface of the squeezing roller is provided with preset textures.

5. The grinding system for cement production according to claim 1, characterized in that: The driving mechanism comprises a motor and a reducer which are transmission-connected, and the reducer is connected to the grinding disc of the pulverizer.

6. The grinding system for cement production according to claim 1, characterized in that: The number of the ultrasonic transducers is more than two, and the more than two ultrasonic transducers are evenly arranged on the inner wall of the grinding mill.

7. The grinding system for cement production according to claim 1, characterized in that: The frequency of the ultrasonic waves emitted by the ultrasonic transducer is 20-100 kHz.

8. The grinding system for cement production according to claim 1, characterized in that: The grinding system for cement production also includes a feeding device, which includes a silo and a quantitative feeder. The silo is used to store the material to be ground, one end of the quantitative feeder is connected to the silo, and the other end of the quantitative feeder is connected to the dryer. The quantitative feeder is used to quantitatively transport the material to the dryer.

9. The grinding system for cement production according to claim 1, characterized in that: The grinding system for cement production also includes a dynamic powder classifier, which is connected to the grinding mill and is used to screen the material crushed by the grinding mill to obtain the material with a required particle size.

10. The grinding system for cement production according to claim 9, characterized in that: The grinding system for cement production also includes a finished product collection box, which is connected to the dynamic powder classifier and is used to collect the material of the required particle size screened by the dynamic powder classifier.

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