Device and method for automatically proportioning grinding agent for cement production and cement raw materials

Abstract

The invention discloses a cement production abrasive and cement raw material automatic proportioning device and method, and relates to the field of cement premixes. The cement production abrasive and cement raw material automatic proportioning device comprises a mixing unit, a first feeding unit, a second feeding unit, a discharging unit and a control unit. According to the cement production abrasive and cement raw material automatic proportioning device and method, an abrasive additive amount relation function is designed based on load current, finished product granularity and water content during grinding, water content, finished product granularity and load current data acquisition is performed through an infrared sensor, a laser sensor and a current sensor, and according to the relation function, cement raw material proportioning is performed according to the water content, finished product granularity and load current data acquisition. An industrial computer is used for analysis and calculation, the grinding agent adding amount proportion is obtained, and a control signal is generated to act on an electromagnetic valve, so that the discharging speed of the grinding agent is controlled, dynamic adjustment of the proportion of cement raw materials and the grinding agent is achieved, and it is guaranteed that the grinding agent adding amount meets the requirement.

Description

Technical Field

[0001] The present invention relates to the technical field of cement premix, and specifically to an automatic proportioning device and method for a grinding agent and cement raw materials in cement production. Background Art

[0002] During cement production, when the added grinding agent is solid powder particles, premixing of the two is required to ensure that when the cement enters the grinding equipment, the raw materials and the grinding agent are fully mixed to ensure the grinding effect.

[0003] Existing premixing devices usually directly add cement raw materials and grinding agents into the premixing equipment according to a fixed ratio, and through sufficient stirring, the two are premixed, and then discharged from the bottom of the mixing equipment and transported to the grinding equipment. By controlling the feeding speeds of the cement raw materials and the grinding agent, the effect of continuous mixing and discharging is achieved;

[0004] However, it is found during the cement grinding process that due to the differences in cement raw materials, there are obvious differences in their hardness and moisture content. Even for the same batch of raw materials, the hardness of the outer layer is lower than that of the inner layer, and at the same time, the moisture content of the outer layer is higher than that of the inner layer. When using a unified addition ratio, if the input amount of the grinding agent is too high, on the one hand, there is over-grinding, and on the other hand, the material cost will increase; if the input amount of the grinding agent is too small, on the one hand, the particle size of the finished product cannot meet the requirements, and on the other hand, it will increase the operating burden of the grinding equipment and reduce its service life. Therefore, an automatic proportioning device and method for a grinding agent and cement raw materials in cement production are provided to solve the above problems. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the present invention provides an automatic proportioning device and method for a grinding agent and cement raw materials in cement production, which solves the problem that the existing cement raw materials and grinding agent cannot be adaptively adjusted according to the changes in the properties of the cement raw materials when mixed through a premixing device.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: An automatic proportioning device for a grinding agent and cement raw materials in cement production, comprising:

[0007] A mixing unit for mixing the materials inside it;

[0008] A first feeding unit installed on one side of the mixing unit for adding cement raw materials to the mixing unit;

[0009] A second feeding unit installed on the top of the mixing unit for adding a grinding agent to the mixing unit;

[0010] A discharging unit installed at the bottom of the mixing unit for outputting the mixed materials in the mixing unit;

[0011] A control unit, which includes a detection module and a control module, and the control module controls the second feeding unit to adjust the feeding rate according to the cement hardness and water content information detected by the detection module.

[0012] Preferably, the mixing unit includes a mixing tank and a dispersion stirring roller rotatably arranged at the inner bottom of the mixing tank. A sealed bin cover is fixedly installed at the top of the mixing tank, and a discharge hopper is fixedly installed at the bottom of the mixing tank.

[0013] Preferably, a stirring motor is fixedly arranged at the bottom of the discharge hopper. The bottom end of the dispersion stirring roller movably penetrates through the discharge hopper. A positioning frame is fixedly arranged inside the mixing tank. The top end of the dispersion stirring roller is rotatably connected in the positioning frame, and the dispersion stirring roller and the output end of the stirring motor are installed by a coupling. The feeding unit includes a discharge screw conveyor fixedly arranged on one side of the discharge hopper and a discharge pipe installed at the bottom of the discharge end of the discharge screw conveyor. The discharge screw conveyor is arranged obliquely upward as a whole.

[0014] Preferably, a feed hopper is fixedly welded on one side of the top of the mixing tank. The first feeding unit includes a feed screw conveyor fixedly installed on one side of the feed hopper. A feeding hopper is fixedly installed at the top of the feeding end of the feed screw conveyor, and the top end of the feed screw conveyor is communicated with the inside of the feed hopper.

[0015] Preferably, a feed dispersion member is installed at the inner bottom of the sealed bin cover. The second feeding unit is fixedly installed on the top of the sealed bin cover, and the bottom end of the second feeding unit extends into the inside of the mixing tank. The feed dispersion member is used for dispersing the materials introduced by the feed hopper and the second feeding unit.

[0016] Preferably, the second feeding unit includes a storage tank fixedly installed on the top of the sealed bin cover. A top cover is installed on the top of the storage tank. A discharge pipe penetrating through the sealed bin cover is installed at the bottom end of the storage tank, and a solenoid valve is installed on the discharge pipe.

[0017] Preferably, the feed dispersion member includes:

[0018] A support plate, which is fixedly arranged in the inner wall of the top end of the mixing tank by bolts;

[0019] A material distribution plate, which is rotatably arranged on the outer wall of the bottom end of the discharge pipe, and a plurality of discharge holes are arranged on the outer side of its bottom end;

[0020] A material throwing hopper, which is rotatably arranged at the bottom of the inner end of the feed hopper;

[0021] A driving cylinder, the end of which is fixedly connected to the support plate. The driving cylinder is used to drive the material distribution plate and the material throwing hopper to rotate synchronously for material dispersion feeding.

[0022] Preferably, a rotating shaft is fixedly arranged at the top of the material throwing hopper. Swing arms are fixedly arranged on both the rotating shaft and the outer wall of the material distributing plate. An activity groove is formed in the swing arm. The output end of the driving air cylinder is fixedly provided with a sliding part, and the sliding part is slidably arranged in the activity groove.

[0023] Preferably, the control unit further includes a control cabinet. The detection module includes a current sensor, a laser particle size analyzer and an infrared moisture analyzer installed in the control cabinet. The control module includes an industrial computer installed in the control cabinet. A laser sensor is connected to the laser particle size analyzer, and an infrared sensor is connected to the infrared moisture analyzer.

[0024] Preferably, an automatic proportioning method for a grinding agent and cement raw materials used in cement production includes the following steps;

[0025] S1. Equipment installation: The discharge screw conveyor is installed at the feeding end of the cement ball mill, and at the same time, an infrared sensor is installed at the connection between the two; a laser sensor is installed at the discharging end of the cement ball mill, and a current sensor is installed on the driving motor of the cement ball mill;

[0026] S2. System setting: Based on the cement finished product particle size D50, the ball mill current I, and the raw material moisture W, a grinding agent addition amount relationship function Q is established;

[0027]

[0028] where D50 is the measured hardness, D50 target = 15 - 25μm is the target hardness, I is the measured current, I rated is the rated current, W is the measured moisture, W ref = 1.5% is the reference moisture;

[0029] where α, β, and γ are weight coefficients, and α + β + γ = 1; where α = 0.5, β = 0.3, γ = 0.2;

[0030] where k, m, and n are exponential adjustment factors. Initially, K = 1.5, m = 0.7, n = 1.2. When the equipment is cold-started, the current fluctuates greatly, and the value of m is decreased. When the equipment is operating stably in production, the value of k is increased. When the external environmental humidity is high, the value of n is increased to reduce the external influence fluctuation;

[0031] S2. Premixed material: The cement raw materials and the powder grinding agent are added into the mixing tank in a mass ratio of 10000:8 for mixing;

[0032] S3. Data monitoring: Use a laser particle size analyzer in cooperation with a laser sensor to measure the particle size of the finished cement, and use a current sensor to measure the magnitude of the current output during cement grinding; measure the moisture content of the cement raw materials by cooperating an infrared moisture meter with an infrared sensor.

[0033] S4. Analyze the hardness of the cement raw materials based on the particle size of the finished cement and the magnitude of the current output during cement grinding; then combine the moisture content of the cement raw materials and comprehensively calculate the addition ratio of the grinding agent.

[0034] S5. Dynamically adjust the addition rate of the grinding agent by controlling the solenoid valve through an industrial computer according to the calculation result, so as to realize the automatic proportioning of the grinding agent and the cement raw materials.

[0035] The present invention discloses an automatic proportioning device and method for a grinding agent and cement raw materials used in cement production, and the beneficial effects thereof are as follows:

[0036] 1. For the automatic proportioning device of the grinding agent and cement raw materials used in cement production, the cement raw materials and the grinding agent are continuously added into the mixing tank through the first feeding unit and the second feeding unit. The dispersion stirring rod inside is used to disperse and stir the cement raw materials and the grinding agent inside by the stirring motor. The mixed raw materials fall into the feeding hopper, and then the mixed materials are output through the discharging screw conveyor. At the same time, by starting the driving cylinder, the sliding part drives the two swing arms to swing reciprocally through the movable groove. At this time, one swing arm drives the material throwing hopper to swing through the rotating shaft, and the other swing arm drives the material distributing plate to rotate reciprocally, so as to disperse and sprinkle the cement raw materials and the grinding agent into the mixing tank, thereby reducing the difficulty of material mixing and improving the mixing speed and mixing effect.

[0037] 2. For the automatic proportioning method of the grinding agent and cement raw materials used in cement production, based on the negative factors brought by the hardness and moisture content of the raw materials during the cement grinding process affecting the cement grinding, and the hardness of the raw materials can be analyzed through the actual load condition of the grinder and the particle size condition of the ground cement during the grinding process; the moisture content of the raw materials can be directly measured. Based on this, a relational function of the addition amount of the grinding agent is designed. Then, data collection of the moisture content, finished product particle size and load current is carried out through an infrared sensor, a laser sensor and a current sensor, and then data processing is carried out by an infrared moisture meter and a laser particle size analyzer. According to the above relational function, the collected data is brought in, and real-time analysis and calculation are carried out by an industrial computer, so as to obtain the required addition ratio of the current grinding agent, and then a control signal is generated to act on the solenoid valve to control the feeding rate of the grinding agent, thereby realizing the dynamic adjustment of the ratio of the cement raw materials to the grinding agent and ensuring that the required amount of the grinding agent can meet the current grinding requirements of the cement raw materials. Description of the Drawings

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0039] Figure 1 Schematic diagram of the overall outer surface structure of the present invention;

[0040] Figure 2 Cross-sectional view of the internal structure of the mixing tank of the present invention;

[0041] Figure 3 Schematic diagram of the structure of the feeding and dispersing part of the present invention;

[0042] Figure 4 Schematic diagram of the structure of the control unit of the present invention;

[0043] Figure 5 Flowchart of the automatic proportioning method of the present invention.

[0044] In the figure: 1. Mixing unit; 11. Mixing tank; 12. Sealing bin cover; 13. Feeding hopper; 14. Stirring motor; 15. Dispersing and stirring roller; 16. Positioning frame; 17. Feeding and dispersing part; 171. Support plate; 172. Material dividing plate; 173. Throwing hopper; 174. Rotating shaft; 175. Driving cylinder; 176. Discharge hole; 177. Swing arm; 178. Activity groove; 179. Sliding part; 2. First feeding unit; 22. Feeding hopper; 23. Inlet hopper; 3. Second feeding unit; 31. Storage tank; 32. Solenoid valve; 33. Top cover; 4. Discharging unit; 42. Discharge pipe; 5. Control unit; 51. Control cabinet; 52. Industrial computer; 53. Laser particle size analyzer; 54. Infrared moisture meter; 55. Laser sensor; 56. Infrared sensor; 57. Current sensor. Detailed implementation manners

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0046] By providing an automatic proportioning device and method for a grinding agent and cement raw materials in cement production, the embodiments of the present application solve the problem that the proportion of existing cement raw materials and grinding agent cannot be adaptively adjusted according to the changes in the properties of the cement raw materials when they are mixed through a premixing device.

[0047] To better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0048] Example 1

[0049] This embodiment discloses an automatic proportioning device for grinding aids and cement raw materials used in cement production. As shown in the attached Figures 1-5 figures, it includes a mixing unit 1, a first feeding unit 2, a second feeding unit 3, a discharging unit 4, and a control unit 5. The mixing unit 1 is used to mix the materials inside it; the first feeding unit 2 is installed on one side of the mixing unit 1 and is used to add cement raw materials to the mixing unit 1; the second feeding unit 3 is installed on the top of the mixing unit 1 and is used to add grinding aids to the mixing unit 1; the discharging unit 4 is installed at the bottom of the mixing unit 1 and is used to output the mixed materials in the mixing unit 1; the control unit 5 includes a detection module and a control module, and the control module controls the second feeding unit 3 to adjust the feeding rate according to the cement hardness and water content information detected by the detection module.

[0050] The mixing unit 1 includes a mixing tank 11 and a dispersion stirring roller 15 rotatably arranged at the inner bottom of the mixing tank 11. A sealed cover 12 is fixedly installed at the top of the mixing tank 11, and a discharging hopper 13 is fixedly installed at the bottom of the mixing tank 11.

[0051] A stirring motor 14 is fixedly arranged at the bottom of the discharging hopper 13. The bottom end of the dispersion stirring roller 15 movably penetrates through the discharging hopper 13. A positioning frame 16 is fixedly arranged inside the mixing tank 11. The top end of the dispersion stirring roller 15 is rotatably connected to the positioning frame 16, and the dispersion stirring roller 15 is installed with a coupling at the output end of the stirring motor 14. The discharging unit 4 includes a discharging screw conveyor fixedly arranged on one side of the discharging hopper 13 and a discharging pipe 42 installed at the bottom of the discharging end of the discharging screw conveyor. The discharging screw conveyor is arranged obliquely upward as a whole.

[0052] A feeding hopper 23 is fixedly welded on one side of the top of the mixing tank 11. The first feeding unit 2 includes a feeding screw conveyor fixedly installed on one side of the feeding hopper 23. A feeding hopper 22 is fixedly installed at the top of the feeding end of the feeding screw conveyor, and the top end of the feeding screw conveyor is connected to the inside of the feeding hopper 23.

[0053] A feeding dispersing part 17 is installed at the inner bottom of the sealed cover 12. The second feeding unit 3 is fixedly installed on the top of the sealed cover 12, and the bottom end of the second feeding unit 3 extends into the mixing tank 11. The feeding dispersing part 17 is used to disperse the materials introduced from the feeding hopper 23 and the second feeding unit 3.

[0054] The second feeding unit 3 includes a storage tank 31 fixedly installed on the top of the sealed bin cover 12. A top cover 33 is installed on the top of the storage tank 31. A feeding pipe passing through the sealed bin cover 12 is installed at the bottom end of the storage tank 31, and a solenoid valve 32 is installed on the feeding pipe.

[0055] The feeding dispersing part 17 includes a support plate 171, a material distributing plate 172, a material throwing hopper 173, a rotating shaft 174, a driving cylinder 175, discharging holes 176, a swing arm 177, an activity groove 178 and a sliding part 179. The support plate 171 is fixedly arranged in the inner wall of the top end of the mixing tank 11 by bolts; the material distributing plate 172 is rotatably arranged on the outer wall of the bottom end of the feeding pipe, and a plurality of discharging holes 176 are formed in the outer side of its bottom end; the material throwing hopper 173 is rotatably arranged at the bottom of the inner end of the feeding hopper 23; the end of the driving cylinder 175 is fixedly connected with the support plate 171. The driving cylinder 175 is used to drive the material distributing plate 172 and the material throwing hopper 173 to rotate synchronously for material dispersing feeding. A rotating shaft 174 is fixedly arranged at the top of the material throwing hopper 173. Swing arms 177 are fixedly arranged on the outer walls of both the rotating shaft 174 and the material distributing plate 172. Activity grooves 178 are formed in the swing arms 177. A sliding part 179 is fixedly arranged at the output end of the driving cylinder 175, and the sliding part 179 is slidably arranged in the activity grooves 178.

[0056] The control unit 5 further includes a control cabinet 51. The detection module includes a current sensor 57, a laser particle size analyzer 53 and an infrared moisture analyzer 54 installed in the control cabinet 51. The control module includes an industrial computer 52 installed in the control cabinet 51. A laser sensor 55 is connected to the laser particle size analyzer 53, and an infrared sensor 56 is connected to the infrared moisture analyzer 54.

[0057] Working principle: When the device is in use, cement raw materials are continuously added to the feeding hopper 22, and then conveyed to the feeding hopper 23 through the feeding screw conveyor, and thus added into the mixing tank 11. Then, by opening the solenoid valve 32, the grinding agent in the storage tank 31 falls downward into the mixing tank 11. At this time, the stirring motor 14 is started, so that the dispersing and stirring rods 15 disperse and stir the internal cement raw materials and grinding agent. The mixed raw materials fall into the discharging hopper 13, and then the mixed materials are output through the discharging screw conveyor. By installing the discharging pipe 42 on the cement ball mill, the materials enter the cement ball mill.

[0058] Meanwhile, during the above process, by starting the driving cylinder 175, the driving cylinder 175 repeatedly contracts. At this time, the driving cylinder 175 drives the sliding part 179 to move back and forth. The sliding part 179 drives the two groups of swing arms 177 to swing reciprocally through the movable groove 178. At this time, one group of swing arms 177 drives the material throwing hopper 173 to swing through the rotating shaft 174, and the other group of swing arms 177 drives the material distributing plate 172 to rotate reciprocally, so as to disperse and sprinkle the cement raw materials and the grinding agent into the mixing tank 11, thereby reducing the difficulty of material mixing and improving the mixing speed and effect.

[0059] Embodiment 2:

[0060] This embodiment discloses an automatic proportioning method for grinding agent and cement raw materials used in cement production. According to the attached Figures 1-5 As shown, an automatic proportioning method for grinding agent and cement raw materials used in cement production includes the following steps;

[0061] S1. Equipment installation: The discharge screw conveyor is installed at the feeding end of the cement ball mill, and at the same time, the infrared sensor 56 is installed at the connection between the two; the laser sensor 55 is installed at the discharging end of the cement ball mill, and the current sensor 57 is installed on the driving motor of the cement ball mill;

[0062] S2. System setting: Based on the particle size D50 of the cement finished product, the current I of the ball mill, and the moisture content W of the raw materials, a relationship function Q for the addition amount of the grinding agent is established;

[0063]

[0064] Where D50 is the measured hardness, D50 target = 15 - 25μm is the target hardness, I is the measured current, I rated is the rated current, W is the measured moisture content, W ref = 1.5% is the reference moisture content;

[0065] Where α, β, and γ are weight coefficients, α + β + γ = 1; where α = 0.5, β = 0.3, γ = 0.2, when the deviation of the particle size (D50) is greater than 5μm, α increases from 0.5 to 0.7; when the current overload is greater than 10% of the rated value, β increases from 0.3 to 0.5; when the moisture fluctuation is greater than 0.05%, γ increases from 0.2 to 0.4;

[0066] Where k, m, and n are exponential adjustment factors. Initially, K = 1.5, m = 0.7, n = 1.2. When the equipment is cold-started, the current fluctuates greatly, and the value of m is reduced. Then, as the production gradually stabilizes, the value of m is slowly increased to 0.7; during stable operation and production, the value of k is increased to improve the particle size consistency. When the external environmental humidity is high, the value of n is increased to reduce the external influence fluctuation;

[0067] S2. Initial mixture: Add cement raw materials and powder abrasive into the mixing tank 11 in a mass ratio of 10,000∶8 for mixing.

[0068] S3. Data monitoring: Use a laser particle size analyzer 53 and a laser sensor 55 to measure the particle size of the finished cement, and use a current sensor 57 to measure the magnitude of the current output during cement grinding; measure the moisture content of the cement raw materials by cooperating an infrared moisture meter 54 and an infrared sensor 56.

[0069] S4. Analyze the hardness of the cement raw materials based on the particle size of the finished cement and the magnitude of the current output during cement grinding; then, combined with the moisture content of the cement raw materials, comprehensively calculate the addition ratio of the abrasive.

[0070] S5. According to the calculation results, control the solenoid valve 32 through an industrial computer 52 to dynamically adjust the addition rate of the abrasive, so as to realize the automatic proportioning of the abrasive and the cement raw materials.

[0071] Working principle: In this embodiment, a method is designed to be used in conjunction with an automatic proportioning device for the abrasive and cement raw materials in cement production. In this method, based on the negative factors existing in the grinding process of cement raw materials, including the hardness of the raw materials and the moisture content of the raw materials. When the hardness is too high and the moisture content is relatively high, it is necessary to appropriately increase the proportion of the abrasive to help with grinding. However, blindly increasing the proportion of the abrasive will also increase the material cost, and some grades of cement will be over-ground, which does not meet the expected effect. Considering the above analysis from two main variable factors, hardness and water content; the hardness of the raw materials can be analyzed through the actual load condition of the grinder and the particle size of the cement after grinding during the grinding process; the moisture content of the raw materials can be directly measured. Based on the above theory, a relational function Q for the addition amount of the abrasive is comprehensively designed as follows;

[0072]

[0073] And a system for implementing the method is designed accordingly. The system includes a detection module and a control module. An infrared sensor 56 is installed at the connection between the discharge screw conveyor and the cement ball mill; a laser sensor 55 is installed at the feeding end of the cement ball mill, and a current sensor 57 is installed on the drive motor of the cement ball mill, so as to obtain real-time current data, water content data and particle size data of the feed during the operation of the cement ball mill respectively; according to the above relational function, the collected data is brought in, and the industrial computer 52 is used for real-time analysis and calculation, so as to obtain the required addition ratio of the grinding agent at present, and then a control signal is generated to act on the solenoid valve 32, so as to control the feeding rate of the grinding agent, thereby realizing the dynamic adjustment of the ratio of the cement raw material to the grinding agent and ensuring that the required amount of the grinding agent can meet the current grinding requirement of the cement raw material.

[0074] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic proportioning device for grinding agent and cement raw materials used in cement production, characterized in that, Comprising: A mixing unit (1) for mixing the materials inside; A first feeding unit (2) installed on one side of the mixing unit (1) for adding cement raw materials into the mixing unit (1); A second feeding unit (3) installed on the top of the mixing unit (1) for adding grinding agents into the mixing unit (1); A discharging unit (4) installed at the bottom of the mixing unit (1) for outputting the mixed materials in the mixing unit (1); A control unit (5) including a detection module and a control module, and the control module controls the second feeding unit (3) to adjust the feeding rate according to the cement hardness and moisture content information detected by the detection module.

2. The automatic proportioning device for grinding agent and cement raw materials used in cement production according to claim 1, wherein: The mixing unit (1) includes a mixing tank (11) and a dispersion stirring roller (15) rotatably arranged at the inner bottom of the mixing tank (11). A sealing bin cover (12) is fixedly installed at the top of the mixing tank (11), and a discharging hopper (13) is fixedly installed at the bottom of the mixing tank (11).

3. An automatic proportioning device for grinding agent and cement raw materials used in cement production according to claim 2, characterized in that: A stirring motor (14) is fixedly arranged at the bottom of the discharging hopper (13). The bottom end of the dispersion stirring roller (15) movably penetrates through the discharging hopper (13). A positioning frame (16) is fixedly arranged inside the mixing tank (11). The top end of the dispersion stirring roller (15) is rotatably connected in the positioning frame (16), and the dispersion stirring roller (15) is installed with the output end of the stirring motor (14) by a coupling. The discharging unit (4) includes a discharging screw conveyor fixedly arranged on one side of the discharging hopper (13) and a discharging pipe (42) installed at the bottom of the discharging end of the discharging screw conveyor. The discharging screw conveyor is integrally arranged obliquely upward.

4. An automatic proportioning device for a grinding agent and cement raw materials used in cement production according to claim 2, characterized in that: A feeding hopper (23) is fixedly welded on one side of the top of the mixing tank (11). The first feeding unit (2) includes a feeding screw conveyor fixedly installed on one side of the feeding hopper (23), and a feeding hopper (22) is fixedly installed at the top of the feeding end of the feeding screw conveyor. The top end of the feeding screw conveyor is communicated with the inside of the feeding hopper (23).

5. An automatic proportioning device for grinding agent and cement raw materials used in cement production according to claim 4, characterized in that: A feeding dispersion member (17) is installed at the inner bottom of the sealing bin cover (12). The second feeding unit (3) is fixedly installed on the top of the sealing bin cover (12), and the bottom end of the second feeding unit (3) extends into the mixing tank (11). The feeding dispersion member (17) is used for dispersing the materials introduced by the feeding hopper (23) and the second feeding unit (3).

6. An automatic proportioning device for grinding agent and cement raw materials used in cement production according to claim 5, characterized in that: The second feeding unit (3) includes a storage tank (31) fixedly installed on the top of the sealing bin cover (12). A top cover (33) is installed on the top of the storage tank (31). A discharging pipe penetrating through the sealing bin cover (12) is installed at the bottom end of the storage tank (31), and a solenoid valve (32) is installed on the discharging pipe.

7. An automatic proportioning device for a grinding agent and cement raw materials used in cement production according to claim 6, characterized in that: The feeding dispersion member (17) includes: A support plate (171) fixedly arranged in the inner wall of the top end of the mixing tank (11) by bolts; A material distributing plate (172) rotatably arranged on the outer wall of the bottom end of the discharging pipe, and a plurality of discharging holes (176) are opened on the outer side of its bottom end; A material throwing hopper (173) rotatably arranged at the inner bottom of the feeding hopper (23); A driving cylinder (175), the end of which is fixedly connected to a support plate (171), and the driving cylinder (175) is used to drive the material distribution plate (172) and the material throwing hopper (173) to rotate synchronously for material dispersion feeding.

8. An automatic proportioning device for a grinding agent and cement raw materials used in cement production according to claim 7, characterized in that: A rotating shaft (174) is fixedly arranged at the top of the material throwing hopper (173), and swing arms (177) are fixedly arranged on the outer wall of the rotating shaft (174) and the material distribution plate (172). An activity slot (178) is formed in the swing arm (177), and a sliding part (179) is fixedly arranged at the output end of the driving cylinder (175), and the sliding part (179) is slidably arranged in the activity slot (178).

9. An automatic proportioning device for a grinding agent and cement raw materials used in cement production according to claim 1, characterized in that: The control unit (5) further includes a control cabinet (51). The detection module includes a current sensor (57), a laser particle size analyzer (53) and an infrared moisture analyzer (54) installed in the control cabinet (51). The control module includes an industrial computer (52) installed in the control cabinet (51). A laser sensor (55) is connected to the laser particle size analyzer (53), and an infrared sensor (56) is connected to the infrared moisture analyzer (54).

10. An automatic proportioning method for a grinding agent and cement raw materials used in cement production, which is proposed based on the automatic proportioning device for a grinding agent and cement raw materials used in cement production according to any one of claims 1-9, and is characterized in that: Including the following steps; S1. Equipment installation: The discharge screw conveyor is installed at the feeding end of the cement ball mill, and at the same time, the infrared sensor (56) is installed at the connection of the two; the laser sensor (55) is installed at the discharging end of the cement ball mill, and the current sensor (57) is installed on the driving motor of the cement ball mill; S2. System setting: Based on the particle size D50 of the cement finished product, the current I of the ball mill and the moisture content W of the raw material, a relationship function Q of the grinding agent addition amount is established; where D50 is the measured hardness, and D50 target = 15 - 25 μm is the target hardness, I is the measured current, and I rated is the rated current, W is the measured moisture content, and W ref = 1.5% is the reference moisture content; where α, β and γ are weight coefficients, and α + β + γ = 1; where α = 0.5, β = 0.3, γ = 0.2; where k, m and n are exponential adjustment factors. Initially, K = 1.5, m = 0.7, n = 1.

2. When the equipment is cold-started, the current fluctuates greatly, and the value of m is reduced. When the production is running stably, the value of k is increased. When the external environmental humidity is high, the value of n is increased to reduce the external influence fluctuation; S2. Premixed material: The cement raw material and the powder grinding agent are added into the mixing tank (11) according to a mass ratio of 10000:8 for mixing; S3. Data monitoring: The laser particle size analyzer (53) and the laser sensor (55) are used in cooperation to measure the particle size of the finished cement, and the current sensor (57) is used to measure the current output size during cement grinding; the moisture content of the cement raw material is measured by the infrared moisture analyzer (54) and the infrared sensor (56) in cooperation; S4. Analyze the hardness of the cement raw material according to the particle size of the finished cement and the current output size during cement grinding; then, combined with the moisture content of the cement raw material, comprehensively calculate the addition ratio of the grinding agent; S5. According to the calculation result, the industrial computer (52) controls the solenoid valve (32) to dynamically adjust the addition rate of the grinding agent, so as to realize the automatic ratio of the grinding agent and the cement raw material.

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