Cement raw material grinding system

Abstract

The utility model discloses a cement raw material grinding system which comprises a rack, a batching bin used for pre-grinding and discharging cement raw materials is arranged at the end of the rack, and a recycling and feeding box used for recycling and conveying sorted raw materials into a grinding box is arranged on one side of a conveying line A and located on one side of the interior of the rack. According to the utility model, particle cement raw materials are absorbed and conveyed into the recovery feeding box by the material suction pump through the material pipe, and meanwhile, the particle cement raw materials rise to the top end through the rotating spiral feeding shaft and fall into the grinding box from the vertical upper end of the grinding box through the recovery pipe fitting, so that the grinding operation is carried out again by utilizing the grinding roller; therefore, in the whole process, the particle cement raw materials can be automatically recycled and returned to the grinding box to be ground again without manual recycling and feeding of workers, then the use consumption of labor and time is reduced, and the cement raw material grinding progress and efficiency are further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cement production technical field, concretely relates to a cement raw material grinding system. BACKGROUND

[0002] Cement is the powdered inorganic cementitious material, forms the pulp after stirring, can harden in air or harden better in water, and can firmly cement sand, stone and other materials together. Cement is the meaning of broken stone and stone. The mixture of lime and volcanic ash in early times is very similar to modern cement, and the concrete made of cemented broken stone has high strength after hardening, and can resist the erosion of fresh water or salt water. For a long time, it is widely used as an important cementitious material in civil construction, water conservancy, national defense and other engineering. The traditional cement production process is to put raw materials into the cement grinding machine according to a certain proportion for grinding, and directly conveyed to the finished product warehouse for standby by the conveyor. Because the ground cement powder is not stirred and homogenized before being conveyed to the finished product warehouse, the composition of the produced cement is not uniform, the quality is low, and it is difficult to meet the construction requirements. At the same time, some large particle materials may not be crushed and be brought into the finished product warehouse during the grinding process, which has a great influence on the quality of the produced cement

[0003] Therefore, the cement grinding system for cement production with publication number "CN206767946U" includes a batching bin and a first conveyor belt device located below the discharge port of the batching bin. A grinding machine is provided below the conveying end of the first conveyor belt device. A receiving hopper is provided below the discharge port of the grinding machine. The receiving hopper is located at the inlet position of the drum conveyor. The drum surface of the drum conveyor is uniformly distributed with fine mesh and coarse mesh along the conveying direction. A first collecting hopper is provided below the fine mesh. A second collecting hopper is provided below the coarse mesh. A homogenizing mixer is provided below the discharge port of the first collecting hopper. A movable recovery tank is provided below the discharge port of the second collecting hopper. A second conveyor belt device is provided below the discharge port of the homogenizing mixer. A finished product warehouse is provided below the conveying end of the second conveyor belt device. Thus, the uniformity of the cement powder and the production quality of the cement are improved.

[0004] However, for the above cement grinding system used in cement production, although the large particle materials from the second collecting hopper enter the movable recycling tank, the operator can push the movable recycling tank to the front of the grinding mill, and then regrind, which not only improves the subsequent cement quality, but also avoids waste of materials, but there are still the following obvious defects in the use process: the ungrounded raw materials screened by the roller conveyor are only recycled by manually pushing the materials to the grinding mill for reprocessing, and in this process, since no member is arranged to suck the ungrounded raw materials during screening, a long time is needed for manual recycling of the raw materials, and the speed of cement raw material grinding cannot be kept up, thereby reducing the processing progress of cement raw material grinding. Utility model content

[0005] The utility model discloses a cement raw material grinding system to solve the problems in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a cement raw material grinding system, including frame, the end of frame is equipped with the batching bin for the pre -grinding of cement raw material and is equipped with the conveying line A of the material grinding of cooperation powder grinding box of batching bin's discharge port bottom side, one side of conveying line A and located inside one side of frame is equipped with the recycling feeding tank for the recycling of sorting raw materials and conveying to the powder grinding box, the bottom discharge end of powder grinding box is equipped with the screening bin for screening the crushed raw material, the bottom of screening bin is equipped with two for the output of sorting raw material and is equipped with the conveying line B for the conveying of the raw material of the powder of the corresponding bottom side of discharge hopper, one side of screening bin is equipped with the material suction pump of raw material adsorption in one of discharge hopper, and the dust removal cover of dust removal of conveying and the dust generated in the powder of crushing is installed to the end one side of powder grinding box through the vertical board equipped with, and the industrial dust collector is equipped on one side of the end of batching bin in frame.

[0007] Preferably, the upper end of the batching bin is provided with a motor A, the rotating shaft of the motor A penetrates into the interior of the batching bin and is drivingly connected with a crushing rotary shaft for pre-crushing the entering cement raw material, and the corresponding discharge port of the batching bin is correspondingly arranged at one end of the upper portion of the conveying line A, so that the cement raw material entering the batching bin can be preliminarily crushed by the crushing rotary shaft, thereby improving the grinding efficiency of the powder grinding box on the cement raw material.

[0008] Preferably, the interior of the powder grinding box is rotatably provided with two grinding rollers for crushing the cement raw material into powder, and the rotating shaft of one end of the grinding roller penetrates to one side of the outside of the powder grinding box and is drivingly connected with a motor B installed on one side of the outside of the powder grinding box, so that the pre-crushed cement raw material is ground by the rotation of the two grinding rollers.

[0009] Preferably, the inside of the screening box is provided with a drum screen for screening the cement raw materials ground into powder, the rotating shaft of one end of the drum screen penetrates to the outside of one side of the screening box and is drivingly connected with a motor C installed on the outside of one side of the screening box, and one side of the screening box is provided with a feeding pipe connected to the discharge end of the grinding box for screening the cement raw materials after grinding through the drum screen in the inside of the screening box.

[0010] Preferably, the inside of the screening box is provided with a drum screen for screening the cement raw materials ground into powder, the rotating shaft of one end of the drum screen penetrates to the outside of one side of the screening box and is drivingly connected with a motor C installed on the outside of one side of the screening box, and one side of the screening box is provided with a feeding pipe connected to the discharge end of the grinding box for screening the cement raw materials after grinding through the drum screen in the inside of the screening box.

[0011] Preferably, one end of the industrial dust collector is connected with a dust collecting pipe, and the other end of the dust collecting pipe penetrates and is connected to the end of the dust removal cover, and the dust removal cover is vertically arranged at the upper end of the grinding box to absorb the dust generated by grinding and feeding, thereby reducing the generation of dust and air pollution.

[0012] Preferably, the end side of the conveying line B is provided with a material blocking plate, and the feeding end of the conveying line B and the side located at the bottom end of the inside of the rack is provided with a movable trolley for receiving the cement powder raw materials, so that the cement powder raw materials can be conveyed to the movable trolley by the conveying line B and moved to the next process link.

[0013] Compared with the prior art, the technical effects and advantages of the cement raw material grinding system are as follows: through the communication of the suction pump and one of the two hoppers at the bottom of the screening box, the communication of the suction pump and the recycling feeding box, and the mutual cooperation of the spiral feeding shaft, the motor D and the recycling pipe in the recycling feeding box, the cement powder raw materials entering the drum screen can be screened into granular cement raw materials and fall into one of the two hoppers, and the suction pump can absorb and convey the granular cement raw materials to the recycling feeding box through the pipe, and the rotating spiral feeding shaft can make the granular cement raw materials rise to the top and fall into the grinding box through the recycling pipe from the vertical upper end of the grinding box for regrinding by the grinding roller, until the cement raw materials reach the standard for use, so that the granular cement raw materials can be automatically recycled and returned to the grinding box for regrinding without manual recycling in the whole process, thereby reducing the consumption of labor and time and further improving the progress and efficiency of the cement raw material grinding.

[0014] The blocky cement raw materials entering into the ingredient bin can be pre-pulverized by the rotation of the pulverizing rotating shaft, so that the quality of the cement raw materials pulverized by the grinding mill can be improved, the speed of the pulverized cement raw materials can be improved, the phenomenon that the blocky cement raw materials are blocked in the material pipe and cannot be discharged can be avoided, the grinding efficiency of the grinding mill for the cement raw materials can be further improved, and the dust in the air can be absorbed by the industrial dust collector and the dust hood, so that the problem of environmental pollution caused by the dust can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is a main view structural schematic view of the drum screen of the utility model;

[0017] Figure 3 It is a main view internal structural schematic view of the ingredient bin of the utility model;

[0018] Figure 4 It is a side view external structural schematic view of the grinding box of the utility model.

[0019] In the drawing: 1, rack; 2, ingredient bin; 3, conveying line A; 4, recycling feeding box; 5, grinding box; 6, screening box; 7, discharge hopper; 8, conveying line B; 9, suction pump; 10, dust hood; 11, industrial dust collector; 12, motor A; 13, pulverizing rotating shaft; 14, grinding roller; 15, motor B; 16, drum screen; 17, motor C; 18, feeding pipe fitting; 19, motor D; 20, spiral feeding shaft; 21, recycling pipe fitting; 22, moving trolley. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figures 1-4The utility model provides a technical scheme: a cement raw material grinding system, including frame 1, frame 1's end is equipped with the batching bin 2 for carrying out pre -grinding of cement raw material and discharging, and batching bin 2 is fixedly inserted in the upper end left side of frame 1, and the bottom of one end inside frame 1 is equipped with the discharge pipe spare of batching bin 2 and is transported to the conveying belt on conveying line A 3 to carry out the transmission of pre -grinding cement raw material, and the bottom side of batching bin 2's discharge port is equipped with the conveying line A 3 of cooperation powder grinding box 5 and carries out the material grinding, and conveying line A 3 is fixedly installed in the inside one side of frame 1, and is located the vertical bottom end of batching bin 2, and one side of conveying line A 3 and the inside one side of frame 1 are equipped with the recycling feeding bin 4 for recycling and conveying the selected raw material into powder grinding box 5, and the top end of recycling feeding bin 4 is fixed in the top end of the inside one side of frame 1, and the bottom of recycling feeding bin 4 is fixed through the fixed baffle of being equipped with horizontally in frame 1, and the bottom discharge end of powder grinding box 5 is equipped with the screening bin 6 for screening the crushed raw material, and the bottom of screening bin 6 is equipped with two for the output of selected raw material's discharge hopper 7, and screening bin 6 is fixedly inserted on fixed baffle through discharge hopper 7, and the corresponding bottom side of discharge hopper 7 is equipped with the conveying line B 8 for conveying the raw material of being crushed into powder, and conveying line B 8 is fixed in the bottom end of the inside one side of frame 1 through support, and the surface one end of conveying belt on conveying line B 8 and one of discharge hopper 7 vertically correspond, are used for the output of powder cement raw material, and one side of screening bin 6 is equipped with the material suction pump 9 of adsorbing the raw material in one of discharge hopper 7, and material suction pump 9 is fixed in the end of fixed baffle, and material suction pump 9 is located between recycling feeding bin 4 and screening bin 6 and carries out the adsorption circulation recovery of granular cement raw material and carries out grinding operation, and the end one side of powder grinding box 5 is equipped with the dust hood 10 of dust extraction of conveying and crushing into powder and is generated Dust is adsorbed, and batching bin 2 is located in the one side of the end of frame 1 and is equipped with industrial dust collector 11, and the dust generated is adsorbed using dust hood 10, and the pollution of dust is reduced.

[0022] The middle part of the upper end of the batching bin 2 is provided with a motor A12, and the motor A12 is fixed on the outer upper end of the batching bin 2. A feeding port for allowing the blocky cement raw materials to enter is formed on the left side of the batching bin 2. The rotating shaft of the motor A12 penetrates into the interior of the batching bin 2 and is drivingly connected with a crushing rotating shaft 13 for pre-crushing the entering cement raw materials. The surface of the crushing rotating shaft 13 is provided with cement raw materials for crushing the blocky cement raw materials into small particles. The corresponding discharge port of the batching bin 2 is correspondingly arranged at one end of the upper part of the conveying line A3. The crushed cement raw materials fall through the discharge pipe to the conveying line A3 for conveying. The interior of the grinding box 5 is rotatably provided with two grinding rollers 14 for crushing the cement raw materials into powder. The surface of the grinding roller 14 is provided with grinding blocks. One end of the rotating shaft of the grinding roller 14 penetrates to one side of the exterior of the grinding box 5 and is drivingly connected with a motor B15 mounted on one side of the exterior of the grinding box 5, so as to drive the grinding roller 14 to rotate and perform the grinding work on the cement raw materials.

[0023] The interior of the screening box 6 is rotatably provided with a drum screen 16 for screening the crushed cement raw materials into powder. The surface of the drum screen 16 is provided with two screen holes with different screen hole diameters. The ground cement raw materials are subjected to the screening work. The rotating shaft of one end of the drum screen 16 penetrates to one side of the exterior of the screening box 6 and is drivingly connected with a motor C17 mounted on one side of the exterior of the screening box 6, so as to drive the drum screen 16 to rotate. The interior of the drum screen 16 is provided with support connections at both ends. The connecting rod is connected to the transmission shaft. One side of the screening box 6 penetrates to be provided with a feeding pipe 18 connected to the discharge end of the grinding box 5. One end of the feeding pipe 18 extends to the interior of one end of the drum screen 16 and does not affect the rotation of the drum screen 16. The interior of the upper end of the recycling feeding box 4 is provided with a motor D19 for driving the spiral feeding shaft 20 to rotate. One end of the rotating shaft of the motor D19 is drivingly connected with the spiral feeding shaft 20 for lifting and feeding the recycled particle cement raw materials. The upper discharge port of the recycling feeding box 4 is connected with a recycling pipe 21. The recycling pipe 21 extends to the vertical upper end of the grinding box 5, so as to re-convey the recycled particle cement raw materials to the grinding box 5 for re-grinding work. The bottom end of the recycling feeding box 4 is connected to the output end of the suction pump 9 through the pipe, so as to convey the particle cement raw materials sucked by the suction pump 9 to the recycling feeding box 4.

[0024] The industrial dust collector 11 is connected with a dust suction pipe at one end, and the other end of the dust suction pipe is connected through the end of the dust removal cover 10, so that the dust suction pipe of the industrial dust collector 11 is used to absorb the dust floating in the air by the dust removal cover 10, and the dust removal cover 10 is vertically arranged at the upper end of the grinding box 5, so that the dust generated during grinding is absorbed, and the side of the end of the conveying line B8 is provided with a material blocking plate, and the end of the conveying line B8 is located on one side of the bottom end inside the rack 1. A movable trolley 22 is arranged for receiving the cement powder raw material, which facilitates the collection of the powdered cement raw material into the movable trolley 22 through the conveying line B8.

[0025] Specifically, in use, first, the blocky cement raw material is conveyed to the batching bin 2, so that the motor A12 is started to drive the crushing rotating shaft 13 to pre-crush the blocky cement raw material, so that the grinding box 5 can efficiently grind the cement raw material into powder, and then the pre-crushed cement raw material is conveyed to the conveying line A3 through the feeding pipe and conveyed to the end by the conveying belt, and the cement raw material at the end falls vertically into the grinding box 5, at this time, the motor B15 is started and drives the grinding roller 14 to rotate to perform the grinding operation on the pre-crushed cement raw material, and the ground cement raw material is conveyed to the drum screen 16 in the screening box 6 through the feeding pipe 18, at this time, the motor C17 rotates to drive the drum screen 16 to rotate, and the rotation of the drum screen 16 rolls the powdered cement raw material and screens it through screens of different diameters, and the granular cement raw material is screened through one of the hoppers 7 and is sucked and conveyed to the recycling feeding box 4 by the suction pump 9, at this time, the motor D19 is started to drive the screw feeding shaft 20 to rotate to lift the granular cement raw material, and the granular cement raw material at the top end falls from the vertical upper end of the grinding box 5 through the recycling pipe 21, so that the granular cement raw material is returned to the grinding box 5 for grinding, so that the unqualified cement powder can be automatically sucked and recycled for re-grinding, thereby improving the grinding quality of the cement raw material, and the qualified powdered cement raw material falls from the other hopper 7 to the conveying line B8 and is conveyed to the end to the movable trolley 22 and is moved to other equipment for operation.

[0026] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacement for some technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A cement raw material grinding system, comprising a rack (1), an ingredient bin (2) arranged at the end of the rack (1) and used for pre-grinding and discharging cement raw materials, and a conveying line A (3) arranged at the bottom side of the discharge port of the ingredient bin (2) and used for grinding the materials; one side of the conveying line A (3) and the inner side of the rack (1) are provided with a recycling feeding bin (4) used for recycling and conveying the sorted materials into the grinding box (5); the recycling feeding bin (4) is characterized in that: The bottom discharge end of the pulverizing box (5) is provided with a screening box (6) for screening the crushed raw materials, the bottom of the screening box (6) is provided with two discharge hoppers (7) for outputting the sorted raw materials, and the corresponding bottom side of the discharge hopper (7) is provided with a conveying line B (8) for conveying the crushed powder raw materials, one side of the screening box (6) is provided with a material suction pump (9) for suctioning the raw materials in one of the discharge hoppers (7), and one side of the end of the pulverizing box (5) is provided with a dust removal cover (10) for dust removal of the dust generated by conveying and crushing into powder, and the dosing bin (2) is provided with an industrial dust collector (11) on one side of the end of the rack (1). ​ 2. A cement raw meal grinding system according to claim 1, characterized in that: The upper middle part of the dosing bin (2) is provided with a motor A (12), the rotating shaft of the motor A (12) penetrates into the interior of the dosing bin (2) and is drivingly connected with a crushing rotating shaft (13) for pre-crushing the entering cement raw materials, and the corresponding discharge port of the dosing bin (2) is correspondingly arranged at one end of the upper part of the conveying line A (3).

3. A cement raw meal grinding system according to claim 1, characterized in that: The interior of the pulverizing box (5) is rotatably provided with two pulverizing rollers (14) for crushing the cement raw materials into powder, and one end of the rotating shaft of the pulverizing roller (14) penetrates to one side outside the pulverizing box (5) and is drivingly connected with a motor B (15) installed on one side outside the pulverizing box (5).

4. The cement raw meal grinding system according to claim 1, characterized in that: The interior of the screening box (6) is rotatably provided with a drum screen (16) for screening the crushed powder cement raw materials, the rotating shaft of one end of the drum screen (16) penetrates to one side outside the screening box (6) and is drivingly connected with a motor C (17) installed on one side outside the screening box (6), and one side of the screening box (6) is provided with a feeding pipe (18) connected to the discharge end of the pulverizing box (5).

5. The cement raw meal grinding system according to claim 1, characterized in that: The upper end of the interior of the recycling feeding box (4) is provided with a motor D (19), one end of the rotating shaft of the motor D (19) is drivingly connected with a spiral feeding shaft (20), the upper discharge port of the recycling feeding box (4) is connected with a recycling pipe (21), the recycling pipe (21) extends to the vertical upper end of the pulverizing box (5), and the bottom end of the recycling feeding box (4) is connected to the output end of the material suction pump (9) through a pipe.

6. A cement raw meal grinding system according to claim 1, characterized in that: One end of the industrial dust collector (11) is connected with a dust suction pipe, the other end of the dust suction pipe penetrates into the end of the dust removal cover (10), and the dust removal cover (10) is vertically arranged at the upper end of the pulverizing box (5).

7. A cement raw meal grinding system according to claim 1, characterized in that: The conveying line B (8) is provided with a material blocking plate at the end side, and the feeding end of the conveying line B (8) is provided with a mobile trolley (22) for receiving the cement powder raw materials on one side of the interior bottom end of the rack (1).

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